The multi-purpose vacuum pump for circulating water in the laboratory provides vacuum conditions for processes such as evaporation, distillation, crystallization, drying, sublimation, filtration and decompression, and degassing. It is especially suitable for colleges and universities, research institutes, chemical, pharmaceutical, biochemical, food, pesticide, Laboratories and quizzes in agricultural engineering, biological engineering and other industries.
First, the scope of use of laboratory circulating water multi-purpose vacuum pump :
Circulating water type multi-purpose vacuum pump provides vacuum conditions for processes such as evaporation, distillation, crystallization, drying, sublimation, filtration, decompression, and degassing. It is especially suitable for colleges and universities, research institutes, chemical, pharmaceutical, biochemical, food, pesticide, and agricultural Laboratories and pilots in engineering, bioengineering and other industries.
Second, the working principle of the laboratory circulating water multi-purpose vacuum pump :
The circulating water type multi-purpose vacuum pump uses circulating water as the working fluid and uses the principle of negative pressure generated by the jet to operate to provide the vacuum pump conditions for the laboratory and can provide circulating cooling water like the reaction device. The working principle diagram is as follows:
Third, the advantages of Shiding SHB-III circulating water multi-purpose vacuum pump compared to other manufacturers:
循环水式多用真空泵两表两抽头，在实验室抽有机溶剂抽劲儿大，抗腐蚀，真空度可达到0.098MPa ，可与实验室5升以下旋转蒸发仪配用抽真空，组成蒸馏提纯装置，体积小，节省空间，可以放在通风橱或实验台上。 1 SHB-III circulating water type multi-purpose vacuum pump with two tables and two taps, pumping organic solvents in the laboratory is strong, corrosion-resistant, and the vacuum degree can reach 0.098 MPa , which can be used with a laboratory rotary evaporator of less than 5 liters. Composed of distillation purification device, small size, save space, can be placed on a fume hood or laboratory bench. The special motor is made by the well-known motor manufacturer ODM. It is sealed with fluorine rubber, and there is no corrosive gas inside the motor. The main body is made of stainless steel and equipped with an external circulation device, and the vacuum degree is stable.
2 SHB-III circulating water multi-purpose vacuum pump water tank adopts newly developed special plastic material, which is resistant to corrosion and strong in solubility, especially for organic chemicals such as acetone and dichloromethane.
3 SHB-III vacuum pump The pump body and impeller (six flow channels, double seals) are stamped and formed from stainless steel, and the material meets the SUS standard; the housing, water tank, ejector, tee, check valve, and suction nozzle are made of PP. .
◆ SHB-ⅢA: The ejector and exhaust nozzle are made of stainless steel (ANSI standard), others are the same as SHB-Ⅲ.
◆ SHB-ⅢS: The pump body is made of PP material, which is more suitable for acid gas. Others are the same as SHB-Ⅲ.
◆ SHB-ⅢT: transparent water tank, easy to observe the water level and water quality, others are the same as SHB-ⅢA.
4 Adopt special fluid muffler, reduce the gas in water, make the vacuum degree higher and more stable.
5 Resistant to acids and alkalis, solvents.
6 Compared with other types of vacuum pumps, it can save electricity by more than 35%.
7 Circulating water type multi-purpose vacuum pump can circulate water and save precious water resources. Shorten the water change interval, which can be used to pump corrosive gas.
8 Compared with the products of the same industry at home and abroad, the products of Zhengzhou Great Wall Technology Industry and Trade Co., Ltd. have the characteristics of high ultimate vacuum and fast pumping speed. The new vacuum bottle after transformation has increased pumping speed by 30% on the original basis.
SHB-III 型循环水式多用真空泵技术参数 ： Technical parameters of SHB-III circulating water multi-purpose vacuum pump :
Power (V / Hz)
1 ～, 110V, 60Hz or 220V, 50Hz or 220V, 60Hz
Flow (L / min)
Vacuum degree (MPa)
Single-head extraction volume (L / min)
Suction head number
Check valve, overcurrent protection
Water tank volume (L)
Water tank material
Overall dimensions (mm)
385W * 280D * 420H
1. SHB-III type is commonly used in laboratories. It is made of stainless steel. It is resistant to corrosion by organic solvents and organic solvents. It can also pump a small amount of acid gases. It only needs to change water frequently. It is widely used in laboratories and has high cost performance. A product.
2. If there are many strong acid gases pumped in the laboratory, it is recommended that you use SHB-IIIS circulating water multi-purpose vacuum pump. PP material is more suitable for strong acid corrosion resistance.
3. SHB-IIIA suction nozzle and jet are made of high-quality stainless steel, which has significant anti-corrosion effect, higher configuration than SHB-III, and good anti-corrosion performance.
4． Model SHB-IIIG is an export standard. The ejector and the exhaust nozzle are sprayed with Teflon (PTFE), and the fluororubber gas pipeline is known as the universal anticorrosion king in the circulating water multi-purpose vacuum pump. The experimental environment is harsh or corrosive, so SHB-IIIG is recommended.
5.SHB-IV double A type is double-sided, four-meter four-tap, four-tap simultaneous vacuum, four-meter display, for four operators to experiment at the same time, students can also turn on and off on either side, without affecting each other, reducing Laboratory costs.
6. Vacuum performance of circulating water multi-purpose vacuum pump under different temperature conditions:
Vacuum degree MPa
Compared with products of the same industry at home and abroad, Zhengzhou Great Wall Technology Industry and Trade Co., Ltd. has the characteristics of high ultimate vacuum and fast pumping speed.
Seven, circulating water type multi-purpose vacuum pump can be used in conjunction with rotary evaporator, cooling circulator, please see the supporting diagram:
Combined device: DL-400 circulating cooler + R-1001VN rotary steaming + SHB-IIIA circulating water pump
Service guarantee: product three guarantees, one year warranty, lifetime maintenance, free technical service
1.According to the needs of customers, our company will give reasonable suggestions and recommend suitable products to customers
2. 24-hour online technical consultation will be provided
3. Will provide product details and performance methods
4.Supporting equipment to provide customers with required equipment according to customer needs
5. A reasonable offer will be given
1. Ensure that the quality of the product is qualified and the price is reasonable
2. Timely communication and feedback on the delivery status, and timely report the waybill number to the customer after delivery and postal invoice
3. Pack and transport products in strict accordance with long-distance transportation or export standards
4.The pass rate from raw materials to finished products can reach 100%
5. Follow the contract commitment to carry out the entire production process
After sales service
1. Provide targeted product installation videos
2.If the product is damaged during transportation, we will provide assistance service
3.Under normal use and maintenance, the product is guaranteed for one year
当保修期满后,我们销售的产品享有终生维修,并且只对更换标准部件和密封部件收取费用 ，不收取上门费，维修费等其他费用。 4. When the warranty period expires, the products we sell enjoy lifetime maintenance, and only charge for replacement of standard parts and seal parts , and do not charge on-site fees, maintenance fees and other costs.
5.During the installation and commissioning, our after-sales service staff will communicate frequently with customers to understand the product's operating status in time. Install and debug the products for customers until they are satisfied
6.If the product fails during operation, we will respond to you in an hour, provide a solution within 24 hours after receiving the maintenance notice, or send maintenance personnel to the site for repair