Product Description
Product description
Model High-efficiency screw blower special airend.
•Using the world’s advanced molding lines, the rotor has undergone advanced coating technology, Effectively protect the rotor from rust.
• Labyrinth seal and screw seal assembly to ensure oil-free air, up to to class 0 level.
• Unique lubricating and oil draining channels ensure that bearings and gears are Good lubrication and cooling, while improving the efficiency of the airend.
• Direct drive, built-in gear box in the main engine. more than belt drive Increase efficiency and reliability, and no lossy parts.
High-efficiency oil-cooled permanent magnet motor
• Forced oil cooling motor, low temperature rise, low noise, efficiency reaches 96.7% exceeding IE4 level.
• Protection class IP65, no loss of magnetism at 180ºC, suitable for harsher working conditions
• small volume.
High efficiency air intake filter
Adopt Germany MANN original air intake filter, filtration accuracy 2u, ensure the cleanliness of the air intake of the main engine and prolong the life of the main engine.
Low noise
Equipped with a muffler with small pressure loss to reduce exhaust noise, and a specially designed noise reduction and sound insulation cover, which is specially muffled for intake and exhaust.
| 1 | Model | DHH75BS |
| 2 | Type | Fixed permanent magnet series oil-free screw blower |
| 3 | Dimensions(Length*width*height) | 1900*1250*1720mm |
| 4 | Installation method | Fixed installation without foundation |
| 5 | Rated displacement | 24.7m3/min |
| 6 | Pressure adjustment range | 120 kPa |
| 8 | Exhaust gas temperature | 130ºC |
| 9 | Compression level | Single-stage |
| 10 | Transfer method | Direct |
| 11 | Compressed oil consumption | 20 L |
| 12 | Cooling method | Wind cold |
| 13 | Cooling air volume | 4400 m3/h |
| 14 | Ambient temperature | 0 ~ 45 ºC |
| 15 | Noise | ≤85 dB(A) |
| 16 | Power | 22 kW |
| 17 | Voltage | 380/50 V/HZ |
| 18 | Start method | Frequency conversion start |
| 19 | Motor protection level | IP65 |
| 20 | Insulation class | F |
| 21 | Fan power | 0.86 kW |
| 22 | Gas outlet pipe diameter | DN200 PN1.0 |
Technical Parameters
| Model | Exhaust pressure (kpa) | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 | 120 | 130 | 140 | 150 | Dimensions(mm) | Exhaust diameter | ||||||||||
| DHH-XXX-BS | Air Delivery(m3/min) | 8.68 | 7.40 | 6.20 | 5.5.60 | 5.00 | 4.60 | 5.70 | 5.20 | 4.80 | 4.40 | 4.00 | 6.00 | 1266*980*1510 | DN125 PN1.6 | ||||||||||
| Power(kW) | 11 | 11 | 11 | 11 | 11 | 11 | 15 | 15 | 15 | 15 | 15 | 22 | |||||||||||||
| Air Delivery(m3/min) | 11.50 | 10.30 | 8.90 | 8.20 | 7.50 | 6.30 | 9.41 | 8.60 | 8.00 | 7.30 | 6.50 | 8.60 | |||||||||||||
| Power(kW) | 15 | 15 | 15 | 15 | 15 | 15 | 22 | 22 | 22 | 22 | 22 | 30 | |||||||||||||
| Air Delivery(m3/min) | / | / | / | 10.50 | 9.91 | 10.00 | / | / | / | 9.20 | 8.70 | / | |||||||||||||
| Power(kW) | / | / | / | 18.5 | 18.5 | 22 | / | / | / | 30 | 30 | / | |||||||||||||
| Air Delivery(m3/min) | 21.60 | 21.40 | 18.10 | / | / | / | 20.10 | 15.50 | 18.10 | / | / | 14.50 | 1900*1250*1720 | DN200 PN1.0 | |||||||||||
| Power(kW) | 18.5 | 22 | 22 | / | / | / | 37 | 30 | 37 | / | / | 45 | |||||||||||||
| Air Delivery(m3/min) | 24.20 | 28.70 | 25.92 | 16.50 | 14.60 | 18.10 | 25.30 | 19.10 | 20.20 | 14.70 | 17.20 | 16.90 | |||||||||||||
| Power(kW) | 22 | 30 | 30 | 22 | 22 | 30 | 45 | 37 | 45 | 37 | 45 | 55 | |||||||||||||
| Air Delivery(m3/min) | 33.10 | 34.40 | 31.60 | 23.10 | 20.50 | 23.70 | 30.80 | 23.50 | 25.10 | 18.00 | 19.50 | 24.70 | |||||||||||||
| Power(kW) | 30 | 37 | 37 | 30 | 30 | 37 | 55 | 45 | 55 | 45 | 55 | 75 | |||||||||||||
| Air Delivery(m3/min) | 40.50 | 40.60 | 38.30 | 28.22 | 25.74 | 28.22 | 28.10 | 33.10 | 22.80 | 28.10 | / | ||||||||||||||
| Power(kW) | 37 | 45 | 45 | 37 | 37 | 45 | / | 55 | 75 | 55 | 75 | / | |||||||||||||
| Air Delivery(m3/min) | / | / | / | 31.10 | 30.00 | 34.60 | / | 37.60 | / | 30.00 | / | / | |||||||||||||
| Power(kW) | / | / | / | 45 | 45 | 55 | / | 75 | / | 75 | / | / | |||||||||||||
| Air Delivery(m3/min) | / | / | / | 43.00 | 38.00 | / | / | / | / | / | / | / | |||||||||||||
| Power(kW) | / | / | / | 55 | 55 | / | / | / | / | / | / | / | |||||||||||||
| Air Delivery(m3/min) | 50.50 | 53.00 | 46.80 | 59.50 | 55.00 | 50.00 | 44.40 | 50.00 | 43.10 | 41.10 | 34.30 | 30.00 | 2352*1500*2140 | DN300 PN0.6 | |||||||||||
| Power(kW) | 45 | 55 | 55 | 75 | 75 | 75 | 75 | 90 | 90 | 90 | 90 | 90 | |||||||||||||
| Air Delivery(m3/min) | 65.2 | / | 60.00 | / | 65.50 | 56.00 | 55.00 | / | 51.50 | 48.20 | 40.80 | 41.00 | |||||||||||||
| Power(kW) | 55 | / | 75 | / | 90 | 90 | 90 | / | 110 | 110 | 110 | 110 | |||||||||||||
| Air Delivery(m3/min) | / | / | / | / | / | / | / | / | / | 59.60 | 55.00 | 48.60 | |||||||||||||
| Power(kW) | / | / | / | / | / | / | / | / | / | 132 | 132 | 132 | |||||||||||||
| Air Delivery(m3/min) | / | 73.50 | 79.00 | 75.30 | / | 77.20 | 73.50 | 64.20 | 64.00 | 71.00 | 75.00 | 62.10 | 2352*1600*2641 | DN300 PN0.6 | |||||||||||
| Power(kW) | / | 75 | 90 | 90 | / | 110 | 110 | 110 | 132 | 160 | 160 | 160 | |||||||||||||
| Air Delivery(m3/min) | 82.10 | 83.50 | 90.40 | 88.00 | 80.50 | 83.30 | 80.00 | 75.20 | 75.50 | 89.1 | 81.5 | 76.90 | |||||||||||||
| Power(kW) | 75 | 90 | 110.00 | 110 | 110 | 132 | 132 | 132 | 160 | 185 | 185 | 185 | |||||||||||||
| Air Delivery(m3/min) | 92.10 | 100.00 | 101.00 | 97.10 | 97.60 | 92.00 | 80.20 | 96.5 | 96.4 | 90.5 | 81.30 | ||||||||||||||
| Power(kW) | 90 | 110 | 132 | 132 | 160 | 160 | 160 | 185 | 200 | 200 | 200 | ||||||||||||||
| Air Delivery(m3/min) | 129.70 | 129.50 | 109.10 | 118.70 | 108.50 | 118.10 | 107.90 | 107.60 | 107.30 | 107.00 | 106.70 | 106.40 | 3500*2255*2370 | DN350 PN1.0 | |||||||||||
| Power(kW) | 110 | 132 | 132 | 160 | 160 | 185 | 185 | 185 | 200 | 220 | 250 | 250 | |||||||||||||
| Air Delivery(m3/min) | 150.00 | 162.70 | 139.40 | 139.10 | 128.50 | 128.20 | 117.80 | 117.50 | 117.20 | 116.90 | 126.70 | 126.40 | |||||||||||||
| Power(kW) | 132 | 160 | 160 | 185 | 185 | 200 | 200 | 220 | 220 | 250 | 280 | 280 | |||||||||||||
| Air Delivery(m3/min) | / | / | 162.40 | 149.60 | 138.80 | 138.50 | 127.90 | 137.90 | 127.30 | 127.00 | 137.00 | 136.70 | |||||||||||||
| Power(kW) | / | / | 185 | 200 | 200 | 220 | 220 | 250 | 250 | 280 | 315 | 315 | |||||||||||||
| Air Delivery(m3/min) | / | / | 162.10 | 149.30 | 161.50 | 148.70 | 148.40 | 137.60 | 147.80 | 147.50 | 147.20 | ||||||||||||||
| Power(kW) | / | / | / | 220 | 220 | 250 | 250 | 280 | 280 | 315 | 355 | 355 | |||||||||||||
| Air Delivery(m3/min) | / | / | / | / | 161.80 | / | 161.20 | 160.90 | 160.60 | 160.20 | / | / | |||||||||||||
| Power(kW) | / | / | / | / | 250 | / | 280 | 315 | 315 | 355 | / | / | |||||||||||||
Oil-injected screw compressor
Advantages: The pressure is stable, and it can be post-installed to remove water, dust and bacteria;
Disadvantages: Exhaust gas contains a lot of oil, causing pollution to the cloth, which does not meet the production requirements of melt-blown cloth.
Roots screw blower
Advantages: The exhaust does not contain oil or water
Disadvantages: The exhaust temperature is too low, contrary to the temperature requirements of the mold spinneret, which originally required heating and constant temperature, but he sent cooling air, which is likely to cause unstable melting temperature. The spinneret contains crystals, dust, and Bacteria, the pressure is unstable, because of its characteristic is that there is no pressure ratio, the outlet pressure is 80kpa, if you want to add sterilization and pre-dust removal, it will cause insufficient pressure, and the spinner does not form or block.
Oil-free screw blower
Advantages: stable pressure (40kpa ~ 150kpa variable frequency adjustable), high exhaust temperature (outlet 120 degrees Celsius), helps to constant melting temperature, can be oil-free, water-free, dust-free, sterile
Disadvantages: the price is more expensive
Comprehensive comparison of the performance of various types of blowers
Certificate
Project Case
As a new environmental protection and energy saving product, oil-free screw blower can be widely used in various industries. The main industries are:
1. Water treatment
Mainly used for aeration to fully mix water and reactants
Industry: Municipal / industrial wastewater treatment, electronics industry, papermaking, metallurgy, leather, printing and dyeing, etc.
2. Transportation
Mainly used for light particle powder and line conveying
Industry: Production of cement, lime powder, titanium dioxide chemical fiber micronets, etc.
3. Biological fermentation and breeding
Mainly used for oxygen supply and stirring
Industry: Food, brewing, breeding oxygen supply, cement / smelting desulfurization and denitrification, etc.
3. Powder conveying
Mainly used for powder transportation of light particles
Industry: Production of cement, lime powder, titanium dioxide, etc.
Customer Feedback
Packaging and Shipping
Our workers pack the tested air compressors in wooden cases. After the packaging is completed, the air compressor will be transported to the port and then shipping to the world.
Company Profile
Dehaha Compressor was founded in 1996 with over 150 skilled employees and more than 25 R&D engineers’ teams.We focus on the research & develop, manufacture and energy-saving solutions of screw air compressor to create value for customers and society.
Dehaha opened to the world since 2015, and now we have a foreign trade department with more than dozens people, serving customers around the world 24 hours. We have sales representatives who can speak English, Spanish, Portuguese, French,and Russian which makes it easier for our clients from all over the world to interact and negotiate with us.now our valued customers are over 130 countries. Germany Standard and 13 years exporting experience help us won more than 50 loyal overseas agents.
Dehaha continuously innovates product development and management to meet customers’ demand. The powerful enterprise culture and continuous innovation make CHINAMFG improved rapidly to reach the business principle “Energy Saving First, Mutual Value Shared”. The production line of CHINAMFG is consist of screw air compressor from 5.5KW to 550KW, oil free air compressor, portable air compressor, permanent magnet variable frequency air compressor, high pressure air compressor and compressed air purification equipment,etc.
Dehaha mission is to be a world-renowned high-end brand, with sustainable development, constantly improving its own value and sharing it with our customers and staff. Committed to offer our customers a silent and energy-saving manufactured products.
Our Service
1.24/7 after sales service support in different languages.
2.Follow up the feedback of products in 2 months interval by email or call.
3.Guidance of installation and commissioning on site can be provided by factory-trained technicians or local Authorized Service Center.
4.Technical training for customers in DEHAHA air compressor factory or working site.
5.Plenty of original spare parts with proven quality are all available from our central stocks in ZheJiang and all distributors’depots.
6.All kinds of technical documents in different languages.
Why choose us?
1.Quality Guarantee
With more than 24 years industry experience and our compressor approved by CE, ISO9001, SGS, And TUV test.The raw materials are strictly inspected and Some key parts are imported from overseas.Each compressor must pass at least 5 hours of continuous testing before leaving the factory.
2.Warranty Period
The complete machines are proviede with one-year warranty, and the compressor air end with Two-year warranty and lifetime maintenance(With the exception of wearing parts)
3. Installation and Commissioning
Provied customers with installation and commissioning instructions,and all service-providing personnel are strictly trained technically by our company.
4.After -sales Services
Our company has service network in world, giving prompt replies to customers after notified within 24~48hours for troubleshooting.
5.Spare Parts
Our company always supply spare parts on most favorable terms.
FAQ
Q1. Are you trading company or manufacture ?
A: We are professional manufacture of screw air compressor of HangZhou(Close to ZheJiang ), China, more than 24 years.
Q2. How long is the delivery time ?
A: For standard voltage ,15 working days. Non-standard ,please contact our sales.
Q3. What’s payment term ?
A: T/T, L/C, D/P, Western Union, Paypal, Credit Card, and etc. Also we could accept USD, RMB, Euro and other currency.
Q4. How about your after-sales service ?
A: 1.Provide customers with installation and commissioning online instructions.
2. Well-trained engineers available to overseas service.
3.CHINAMFG agents and after service avaiable.arrange our engineers to help you training and installation.
Q5. How about your warranty?
A: One year for the whole machine and 2 years for screw air end, except consumable spare parts.
Q6. Do you have any certificate ?
A: Yes, per different customer’s market need ,we can offer CE ,ISO etc certificate.
Q7. What about the maintenance ?
A: First maintenance need to be done after 500Hours, and then every 2000-3000 hours to do the normal maintenance, and consider the actual environment.
Q8. How do you control quality ?
A: 1.The raw materials are strictly inspected
2. Some key parts are imported from overseas
3.Each compressor must pass at least 5 hours of continuous testing before leaving the factory.
Q9. Do you offer OEM service ?
A: Yes.Both OEM & ODM service can be accepted.
Q10.How long could your air compressor be used?
A: Generally, more than 10 years.
| After-sales Service: | Online Support |
|---|---|
| Warranty: | 24months |
| Lubrication Style: | Lubricated |
| Customization: |
Available
|
|
|---|
.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}
|
Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
|---|
| Payment Method: |
|
|---|---|
|
Initial Payment Full Payment |
| Currency: | US$ |
|---|
| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
|---|
.webp)
What Are the Key Components of a Water-Lubrication System in Compressors?
A water-lubrication system in compressors typically consists of several key components that work together to provide lubrication and cooling to the compressor. Here’s a detailed explanation of the key components of a water-lubrication system in compressors:
Water Supply:
- Water Source: The water-lubrication system requires a water source that provides clean and suitable water for lubrication. The water can be sourced from various places such as municipal water supply, well water, or treated water from a dedicated water treatment system.
- Water Inlet: The water inlet is the entry point where water enters the compressor’s lubrication system. It may include valves, filters, or other components to regulate and control the water flow.
Lubrication System:
- Water Jackets: Water jackets are channels or passages built into the compressor’s housing or cylinder walls. These jackets allow water to circulate and come into direct contact with the compressor’s moving parts, providing lubrication and cooling. The water jackets help dissipate heat generated during compression and prevent excessive temperatures that could damage the compressor.
- Water Pump: The water pump is responsible for circulating water through the water jackets and the entire lubrication system. It provides the necessary pressure to ensure adequate water flow and distribution to the compressor’s components.
- Flow Control Devices: Flow control devices, such as valves or flow restrictors, are often included in the water-lubrication system to regulate and control the water flow rate. These devices help maintain optimal water pressure and flow throughout the system, ensuring effective lubrication and cooling.
- Water Filters: Water filters are used to remove impurities, sediment, or debris from the water before it enters the lubrication system. They help prevent blockages, protect the compressor’s components from damage, and maintain the quality of the water used for lubrication.
- Water Separator: A water separator is a component that removes excess water, moisture, or condensate from the compressed air. It ensures that the compressed air leaving the compressor is dry and free from excess water content, preventing potential issues such as corrosion or contamination downstream.
Control and Monitoring:
- Temperature Sensors: Temperature sensors are used to monitor the temperature of the water and the compressor components. They provide feedback to the control system, allowing for adjustments in water flow or cooling measures if required to maintain optimal operating conditions.
- Pressure Sensors: Pressure sensors are employed to monitor the water pressure within the lubrication system. They help ensure that the water flow and pressure are within the desired range, allowing for proper lubrication and cooling of the compressor.
- Control System: A control system, which may include a combination of sensors, valves, and controllers, is responsible for regulating and maintaining the operation of the water-lubrication system. It can monitor various parameters, such as temperature, pressure, and flow, and make adjustments as needed to ensure efficient and safe operation.
Regular maintenance, inspection, and monitoring of the key components of the water-lubrication system are essential to ensure its proper functioning and to prevent any issues that could affect the performance and longevity of the compressor.
.webp)
Are There Any Potential Water-Related Issues with These Compressors?
Yes, there are potential water-related issues that can arise with water-lubricated compressors. Here’s a detailed explanation of some of the common water-related issues associated with these compressors:
Corrosion:
- Internal Corrosion: Water-lubricated compressors are susceptible to internal corrosion due to the presence of water within the system. If the water used is not properly treated or if corrosion prevention measures are insufficient, the internal components of the compressor can corrode over time. Corrosion can lead to reduced performance, component damage, and the potential for leaks or system failures.
- External Corrosion: External components such as piping, valves, and fittings can also be affected by corrosion if exposed to water and moisture. Corrosion on these external surfaces can lead to compromised integrity, leaks, and reduced system efficiency.
Water Quality:
- Water Contaminants: The quality of the water used in water-lubricated compressors is crucial. If the water contains contaminants such as sediment, debris, oil, or chemicals, it can negatively impact the performance and reliability of the compressor. Contaminants can cause blockages, clogging, increased wear on components, reduced lubrication effectiveness, and potential damage to the compressor.
- Water Hardness: Water hardness, characterized by high mineral content, can lead to scaling and deposits within the compressor and associated components. Scaling can restrict flow, impede heat transfer, and reduce the efficiency of the compressor. It can also contribute to fouling and corrosion issues.
Water Treatment and Filtration:
- Inadequate Water Treatment: Insufficient or improper water treatment can lead to various issues. If the water is not adequately treated for contaminants, hardness, or pH levels, it can result in accelerated corrosion, scaling, fouling, and reduced lubrication effectiveness. Inadequate water treatment can also contribute to increased maintenance requirements and decreased overall compressor performance.
- Filtration System Issues: Filtration systems play a crucial role in removing contaminants from the water. However, if the filtration system is not properly maintained, filters become clogged or damaged, or if there are design or installation issues, it can lead to inadequate filtration and compromised water quality. This can result in the accumulation of contaminants, reduced lubrication performance, and potential damage to the compressor.
Water Supply and Availability:
- Insufficient Water Supply: Water-lubricated compressors rely on a consistent and reliable water supply. If the water supply is insufficient in terms of flow rate, pressure, or quality, it can impact the compressor’s operation and performance. Inadequate water supply can lead to inadequate lubrication, reduced cooling capacity, and increased wear on components.
- Water Source Availability: The availability of a suitable water source is essential for water-lubricated compressors. In certain locations or applications, accessing clean water or meeting specific water quality requirements may pose challenges. Lack of a suitable water source can limit the feasibility or effectiveness of using water-lubricated compressors.
It is important to address these potential water-related issues by implementing proper water treatment, corrosion prevention measures, regular maintenance of filtration systems, and monitoring of water quality. Adhering to manufacturer guidelines, performing regular inspections, and taking proactive measures can help mitigate these issues and ensure the reliable and efficient operation of water-lubricated compressors.
.webp)
Are There Any Downsides to Using Water-Lubricated Air Compressors?
While water-lubricated air compressors offer several advantages, there are also some downsides to consider when using this type of compressor. Here are a few potential drawbacks associated with water-lubricated air compressors:
- Water quality requirements: Water-lubricated compressors are highly dependent on the quality of the water used for lubrication. The water should be free from contaminants, minerals, and impurities that can affect the compressor’s performance or cause corrosion. Ensuring the consistent availability of high-quality water may require additional filtration or treatment processes, which can add complexity and cost to the system.
- Increased maintenance: Compared to oil-lubricated compressors, water-lubricated models may require more frequent maintenance. Regular checks, cleaning, and monitoring of the water system are necessary to prevent blockages, maintain proper water flow, and ensure the cleanliness of the compressor. This increased maintenance requirement can result in higher operational costs and more downtime for maintenance activities.
- Potential for corrosion: While water itself is not corrosive, certain water conditions, such as high mineral content or low pH levels, can promote corrosion within the compressor system. Corrosion can lead to component damage, reduced efficiency, and the need for repairs or replacements. Implementing corrosion prevention measures, such as water treatment or the use of corrosion-resistant materials, may be necessary to mitigate this risk.
- Compatibility limitations: Water-lubricated compressors may have limitations when it comes to compatibility with certain materials or gases. For example, in applications where the compressed air comes into contact with sensitive materials or requires specific gas purity, the use of water as a lubricant may not be suitable. In such cases, alternative lubrication methods or compressor types may be more appropriate.
- Environmental considerations: While water is generally considered environmentally friendly, the disposal of used water from the compressor system may require proper wastewater management. Depending on local regulations and requirements, additional steps may be needed to ensure compliant and environmentally responsible disposal of the water used for lubrication.
Despite these potential downsides, water-lubricated air compressors continue to be used in various industries and applications due to their specific advantages and suitability for certain environments. It is important to carefully evaluate the specific requirements, operating conditions, and maintenance considerations of a given application to determine whether a water-lubricated compressor is the most suitable choice.
editor by CX 2023-11-27