Product Description
Product Parameters
| Model | VRD-4 | VRD-8 | VRD-16 | VRD-24 | VRD-30 | VRD-48 | VRD-65 | VRD-90 | |
| Pumping Speed | 50HZ m3/h(L/S) | 4(1.1) | 8(2.2) | 16(4.4) | 24(6.6) | 30(8.3) | 48(13.3) | 65(18) | 85(23.6) |
| 60HZ m3/h(L/S) | 4.8(1.3 | 9.6(2.6) | 19.2(5.2) | 28.8(7.9) | 36(9.9) | 57.6(16) | 78(21.6) | 102(28.3) | |
| Ultimate Partial Pressure Gas Ballast Close(Pa) | 5x10-2 | 5x10-2 | 4x10-2 | 4x10-2 | 4x10-2 | 4x10-2 | 4x10-2 | 4x10-2 | |
| Ultimate Total Pressure Gas Ballast Close(Pa) | 5x10-1 | 5x10-1 | 4x10-1 | 4x10-1 | 4x10-1 | 4x10-1 | 4x10-1 | 4x10-1 | |
| Ultimate Total Pressure Gas Ballast Open(Pa) | 10 | 10 | 8x10-1 | 8x10-1 | 8x10-1 | 1.5 | 1.5 | 1.5 | |
| Power Supply | Single/3 phase | 3 phase | |||||||
| Power(kw) | 0.4/0.37 | 0.4/0.37 | 0.55 | 0.75 | 1.1 | 1.5 | 2.2 | 3 | |
| Level of Protection | IP44 | IP44 | IP44 | IP44 | IP44 | IP44 | IP44 | IP44 | |
| Air Intake/Exhaust Port | KF16/25 | KF16/25 | KF25 | KF25/40 | KF25/40 | KF40 | KF40 | KF40 | |
| Oil Mass(L) | 0.6-1.0 | 0.6-1.0 | 0.9-1.5 | 1.3-2.0 | 1.3-2.0 | 3.3-4.5 | 3.3-4.5 | 3.3-4.5 | |
| Motor Speed 50/60Hz(rpm) | 1440/1720 | 1440/1720 | 1440/1720 | 1440/1720 | 1440/1720 | 1440/1720 | 1440/1720 | 1440/1720 | |
| Ambient Temperature(ºC) | 10-40 | 10-40 | 10-40 | 10-40 | 10-40 | 10-40 | 10-40 | 10-40 | |
| Noise Level(dB) | ≤52 | ≤52 | ≤58 | ≤58 | ≤58 | ≤62 | ≤62 | ≤65 | |
| Weight(kg) | 19 | 21 | 30 | 35 | 43 | 62 | 65 | 65 | |
| Size(L*W*H mm) | 440*144*217 | 440*144*217 | 530*188*272 | 567*188*272 | 567*188*272 | 730*234*358 | 730*234*358 | 730*234*358 | |
Product Description
"BOTH" VRD series pumps are designed for reliable long time continuous operation, they will take your equipment's vacuum down to 0.3 CHINAMFG in minutes. Comes standard with all necessary fittings and a high capacity exhaust oil mist filter which also returns trapped pump oil back to the pump and makes the pump quieter to run. Multi-level gas ballast is designed to allow purposefully pull a less deep and slower vacuum by opening the gas ballast, allowing dry air to go directly into the pump and diluting the vacuum pull, and it also helps keep moisture, solvent, and other contaminants from getting stuck in the pump, and instead passing through to the exhaust. It is important to note that pumps should always be ran in a well ventilated area
· Tow-Shift adjustable gas ballast valve satisfies different requirements of condensable vapor(such as water vapor) to be exhausted
· Out of pump in different processes. Dual protection of oil anti-sucking back ensures vacuum system from oil pollution when pump
· Stops running and needs to be easily restarted. Forced oil circulation system consisted of oil pump and constant pressure oil supply mechanism ensures stable running of the pump.
· Less components are used, easy to maintain and repair
Application
· Rotary Vane Vacuum Pump corollary use with freezer dryer to reach vacuum state, it's an essential corollary equipment in medicine CHINAMFG drying, biology, food industry and agricultural products deep processing
· Rotary Vane Vacuum Pump corollary use with vacuum drying oven for maintaining vacuum state inside the oven, they mainly applies in powder drying and baking in vacuum condition
Company Profile
Packaging & Shipping
FAQ
Q1. What is your products range?
• Industry water chiller, recirculating cooling chiller, rotary evaporator, alcohol recovery equipment, short path distillation kit, glass molecular distillation equipment, falling film evaporator, jacketed glass reactor and other lab equipment.
Q2. Are you trading company or manufacturer?
• We are professional manufacture of lab equipment and we have our own factory.
Q3. Do you provide samples? Is it free?
• Yes, we could offer the sample. Considering the high value of our products, the sample is not free, but we will give you our best price including shipping cost.
Q4. Do you have warranty?
• Yes, we offer 1 year warranty for the spare part.
Q5. How long is your delivery time?
• Generally it is within 7 working days after receiving the payment if the goods are in stock. Or it is 15 working days if thegoods are not in stock, depending on order quantity.
Q6. What is your terms of payment?
• Payment≤15,000USD, 100% in advance. Payment≥15,000USD, 70% T/T in advance, balance before shipment.
(If you are concerned about payment security for the first order, we advise you can place Trade Assurance Order via Alibaba. you will get 100% payment refund if we can't meet agreed delivery time.)
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| After-sales Service: | Online Service Support |
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| Warranty: | 2 Year |
| Oil or Not: | Oil |
| Structure: | Multistage Pump |
| Vacuum Degree: | High Vacuum |
| Work Function: | Mainsuction Pump |
| Customization: |
Available
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Can Vacuum Pumps Be Used for Vacuum Furnaces?
Yes, vacuum pumps can be used for vacuum furnaces. Here's a detailed explanation:
Vacuum furnaces are specialized heating systems used in various industries for heat treatment processes that require controlled environments with low or no atmospheric pressure. Vacuum pumps play a crucial role in creating and maintaining the vacuum conditions necessary for the operation of vacuum furnaces.
Here are some key points regarding the use of vacuum pumps in vacuum furnaces:
1. Vacuum Creation: Vacuum pumps are used to evacuate the furnace chamber, creating a low-pressure or near-vacuum environment. This is essential for the heat treatment processes carried out in the furnace, as it helps eliminate oxygen and other reactive gases, preventing oxidation or unwanted chemical reactions with the heated materials.
2. Pressure Control: Vacuum pumps provide the means to control and maintain the desired pressure levels within the furnace chamber during the heat treatment process. Precise pressure control is necessary to achieve the desired metallurgical and material property changes during processes such as annealing, brazing, sintering, and hardening.
3. Contamination Prevention: By removing gases and impurities from the furnace chamber, vacuum pumps help prevent contamination of the heated materials. This is particularly important in applications where cleanliness and purity of the processed materials are critical, such as in the aerospace, automotive, and medical industries.
4. Rapid Cooling: Some vacuum furnace systems incorporate rapid cooling capabilities, known as quenching. Vacuum pumps assist in facilitating the rapid cooling process by removing the heat generated during quenching, ensuring efficient cooling and minimizing distortion or other unwanted effects on the treated materials.
5. Process Flexibility: Vacuum pumps provide flexibility in the type of heat treatment processes that can be performed in vacuum furnaces. Different heat treatment techniques, such as vacuum annealing, vacuum brazing, or vacuum carburizing, require specific pressure levels and atmospheric conditions that can be achieved and maintained with the use of vacuum pumps.
6. Vacuum Pump Types: Different types of vacuum pumps can be used in vacuum furnaces, depending on the specific requirements of the heat treatment process. Commonly used vacuum pump technologies include oil-sealed rotary vane pumps, dry screw pumps, diffusion pumps, and cryogenic pumps. The choice of vacuum pump depends on factors such as required vacuum level, pumping speed, reliability, and compatibility with the process gases.
7. Maintenance and Monitoring: Proper maintenance and monitoring of vacuum pumps are essential to ensure their optimal performance and reliability. Regular inspections, lubrication, and replacement of consumables (such as oil or filters) are necessary to maintain the efficiency and longevity of the vacuum pump system.
8. Safety Considerations: Operating vacuum furnaces with vacuum pumps requires adherence to safety protocols. This includes proper handling of potentially hazardous gases or chemicals used in the heat treatment processes, as well as following safety guidelines for operating and maintaining the vacuum pump system.
Overall, vacuum pumps are integral components of vacuum furnaces, enabling the creation and maintenance of the required vacuum conditions for precise and controlled heat treatment processes. They contribute to the quality, consistency, and efficiency of the heat treatment operations performed in vacuum furnaces across a wide range of industries.
How Do Vacuum Pumps Assist in Freeze-Drying Processes?
Freeze-drying, also known as lyophilization, is a dehydration technique used in various industries, including pharmaceutical manufacturing. Vacuum pumps play a crucial role in facilitating freeze-drying processes. Here's a detailed explanation:
During freeze-drying, vacuum pumps assist in the removal of water or solvents from pharmaceutical products while preserving their structure and integrity. The freeze-drying process involves three main stages: freezing, primary drying (sublimation), and secondary drying (desorption).
1. Freezing: In the first stage, the pharmaceutical product is frozen to a solid state. Freezing is typically achieved by lowering the temperature of the product below its freezing point. The frozen product is then placed in a vacuum chamber.
2. Primary Drying (Sublimation): Once the product is frozen, the vacuum pump creates a low-pressure environment within the chamber. By reducing the pressure, the boiling point of water or solvents present in the frozen product is lowered, allowing them to transition directly from the solid phase to the vapor phase through a process called sublimation. Sublimation bypasses the liquid phase, preventing potential damage to the product's structure.
The vacuum pump maintains a low-pressure environment by continuously removing the water vapor or solvent vapor generated during sublimation. The vapor is drawn out of the chamber, leaving behind the freeze-dried product. This process preserves the product's original form, texture, and biological activity.
3. Secondary Drying (Desorption): After the majority of the water or solvents have been removed through sublimation, the freeze-dried product may still contain residual moisture or solvents. In the secondary drying stage, the vacuum pump continues to apply vacuum to the chamber, but at a higher temperature. The purpose of this stage is to remove the remaining moisture or solvents through evaporation.
The vacuum pump maintains the low-pressure environment, allowing the residual moisture or solvents to evaporate at a lower temperature than under atmospheric pressure. This prevents potential thermal degradation of the product. Secondary drying further enhances the stability and shelf life of the freeze-dried pharmaceutical product.
By creating and maintaining a low-pressure environment, vacuum pumps enable efficient and controlled sublimation and desorption during the freeze-drying process. They facilitate the removal of water or solvents while minimizing the potential damage to the product's structure and preserving its quality. Vacuum pumps also contribute to the overall speed and efficiency of the freeze-drying process by continuously removing the vapor generated during sublimation and evaporation. The precise control provided by vacuum pumps ensures the production of stable and high-quality freeze-dried pharmaceutical products.
Are There Different Types of Vacuum Pumps Available?
Yes, there are various types of vacuum pumps available, each designed to suit specific applications and operating principles. Here's a detailed explanation:
Vacuum pumps are classified based on their operating principles, mechanisms, and the type of vacuum they can generate. Some common types of vacuum pumps include:
1. Rotary Vane Vacuum Pumps:
- Description: Rotary vane pumps are positive displacement pumps that use rotating vanes to create a vacuum. The vanes slide in and out of slots in the pump rotor, trapping and compressing gas to create suction and generate a vacuum.
- Applications: Rotary vane vacuum pumps are widely used in applications requiring moderate vacuum levels, such as laboratory vacuum systems, packaging, refrigeration, and air conditioning.
2. Diaphragm Vacuum Pumps:
- Description: Diaphragm pumps use a flexible diaphragm that moves up and down to create a vacuum. The diaphragm separates the vacuum chamber from the driving mechanism, preventing contamination and oil-free operation.
- Applications: Diaphragm vacuum pumps are commonly used in laboratories, medical equipment, analysis instruments, and applications where oil-free or chemical-resistant vacuum is required.
3. Scroll Vacuum Pumps:
- Description: Scroll pumps have two spiral-shaped scrolls—one fixed and one orbiting—which create a series of moving crescent-shaped gas pockets. As the scrolls move, gas is continuously trapped and compressed, resulting in a vacuum.
- Applications: Scroll vacuum pumps are suitable for applications requiring a clean and dry vacuum, such as analytical instruments, vacuum drying, and vacuum coating.
4. Piston Vacuum Pumps:
- Description: Piston pumps use reciprocating pistons to create a vacuum by compressing gas and then releasing it through valves. They can achieve high vacuum levels but may require lubrication.
- Applications: Piston vacuum pumps are used in applications requiring high vacuum levels, such as vacuum furnaces, freeze drying, and semiconductor manufacturing.
5. Turbo Molecular Vacuum Pumps:
- Description: Turbo pumps use high-speed rotating blades or impellers to create a molecular flow, continuously pumping gas molecules out of the system. They typically require a backing pump to operate.
- Applications: Turbo molecular pumps are used in high vacuum applications, such as semiconductor fabrication, research laboratories, and mass spectrometry.
6. Diffusion Vacuum Pumps:
- Description: Diffusion pumps rely on the diffusion of gas molecules and their subsequent removal by a high-speed jet of vapor. They operate at high vacuum levels and require a backing pump.
- Applications: Diffusion pumps are commonly used in applications requiring high vacuum levels, such as vacuum metallurgy, space simulation chambers, and particle accelerators.
7. Cryogenic Vacuum Pumps:
- Description: Cryogenic pumps use extremely low temperatures to condense and capture gas molecules, creating a vacuum. They rely on cryogenic fluids, such as liquid nitrogen or helium, for operation.
- Applications: Cryogenic vacuum pumps are used in ultra-high vacuum applications, such as particle physics research, material science, and fusion reactors.
These are just a few examples of the different types of vacuum pumps available. Each type has its advantages, limitations, and suitability for specific applications. The choice of vacuum pump depends on factors like required vacuum level, gas compatibility, reliability, cost, and the specific needs of the application.
editor by CX 2024-04-08