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Which vacuum pump can I use in a short-path distillation system?

There are many types of vacuuming equipment in the short-path distillation kit. When you choose, you can choose according to your actual needs and the price budget.
 
The vacuum pumps produced by our company include rotary vane vacuum pumps, circulating water vacuum pumps, diaphragm pumps, and three types of vacuum pumps. Next we introduce the three vacuum pumps.

Rotary vane vacuum pump:

Rotary vane vacuum pump

Rotary vane vacuum pump features:

♦ The 2XZ series Rotary Vane Vacuum Pump belongs to two stage direct connection structure rotary vane vacuum pump, which can be used for drying, sealing the container and other ancillary pumping air or net vacuum equipments.
♦ It has the advantages of small size, light weight, low noise, convenient for using and more.
♦ The 2XZ series Rotary Vane Vacuum Pump can not be used as the compression type delivery pump.

Parameter:


Model

2XZ-0.5

2XZ-15

Pumping speed (L/S)

0.5

15

Ult. vacuum (Pa)

Without gas ballast

≤6*10-2

With gas ballast

≤6.5

≤1.33

Rotary speed (r/min)

1400

1410

Working Voltage (V)

220

220/380

Motor power (Kw)

0.18

1.5

Inlet diameter (mm)

Φ16

Φ40

Temp. rise of pump oil (℃)

40

≥70

Oil capacity (L)

0.5

4.0

Size

L (mm)

445

703

W (mm)

130

338

H (mm)

254

453

Weight (kg)

(with 3-phase motor)

13.5

77.5

Noise (db)

≥60

Vibration reference number (u)

≥80


Circulating water vacuum pump:

Multi-purpose circulating water vacuum pumps can be divided into bench-top circulating water vacuum pumps and vertical circulating water vacuum pumps.

vertical circulating water vacuum pump Desktop Circulating Water Vacuum Pump
vertical circulating water vacuum pump Desktop Circulating Water Vacuum Pump
 

Desktop circulating water vacuum pump features:

♦ Water-saving and recycling use. After testing in one working day, continuous use may save water more than 8 tons. It is particularly suitable for tall building laboratory which is lack of water or insufficient water pressure.
♦ Multi-function application. Provide vacuum conditions, as well as circulating cooling water to the reaction device. Suction air hole can work alone or in parallel operation.
♦ Corrosion resistant, free-pollution, stable performance, low noise and durable.

Parameter:

Model

SHZ-D

Double gauge/Double-tap

SHZ-D

Four gauge/four tap

Power(W)

180

370

Voltage(V/HZ)

220/50

Flow(L/min)

60

Lift(M)

8

Body material

Anti-corrosive

Max. vacuup(Mpa)

0.098

Sucking rate for one tap(L/min)

10

Quality of sucking air hole

2

4

Capacity(L)

15

Dimension(Mm)

400*280*420

Weight(Kg)

15

Remark

Can equipped with 2L, 5L glass reactor and rotary evaporator. The vacuum is better when the water temperature is between 4 ºC and 10 ºC.


Vertical circulating water vacuum pump features:

♦ One machine with multi-pipe operation, where three sets (five sets )of air exhauster are fixed and can be used independently or parallelly, compared with desktop pump, swept volume is bigger, applied to large swept volume vacuum needs.
♦ Corrosion resistance, free-pollution, stable performance, low noise and durable.
♦ The tank is made from Polyvinyl chloride plastics, free-pollution; The shell adopts stainless steel material or static spring plastic.
♦ Host stainless steel movement and anti-corrosive movement models.
♦ The water-line target, light shows high, medium and low.
♦ 4 trundles make the movement easily
♦ The air exhaustor, three links, check valve, suction nozzle are made of PTFE, anti-acid and alkali.
♦ Pump body and impeller are made of corrosion protection polypropylene.
♦ Special customized motor by well-known manufacturers, fluorine rubber mechanical seal to keep no corrosive gas into the motor.
♦ There are several sets pumping system inside the pump. Three or five sets taps are installed in this model, alone or in parallel. 
Compared with desktop pump, it has larger amount of exhaust, in particular suitable for big device’s demands.

Parameter:

Model

SHZ-C

SHZ-C

SHZ-95B

Power (W)

370

 Voltage (V/Hz)

220/50

Flow (L/min)

80

 Body Material

1cr18

polypropylene

Anti-corrosive

Lift (m)

12

Max. Vacuum (Mpa)

0.098

 Sucking rate for single tap (L/min)

10

Quantity of tap (Pcs)

5

3

5

Tank capacity (L)

50

Dimension(mm)

450*340*870

450*340*840

Weight (kg)

37

Security performance

check-valve

 

Diaphragm pump:

There are three series of diaphragm pumps produced by our company: P20 diaphragm pump, MPC diaphragm pump, DP-401 diaphragm pump.

P20 vacuum diaphragm pump MPC series diaphragm pump DP-401 diaphragm pump
P20 vacuum diaphragm pump MPC series diaphragm pump DP-401 diaphragm pump
 

P20 diaphragm pump features:

♦ Chemical resistance: Corrosion-resistant vacuum pump adopts special diaphragm (PTFE coating on membrane surface) and pump head design, including all joints and pipes. Gas contact parts are made of imported PTFE material, so they are resistant to most corrosive gases. At the same time, electrical The switch and the outer casing are also treated with anti-corrosion treatment. In particular, the transmission mechanism and the circuit part are made of corrosion-resistant materials to form a closed space, completely isolated from the external environment, so that the vacuum pump is not only resistant to corrosive media, but also suitable for corrosive environments, completely solving the vacuum pump. Chemical resistance issues.
♦ Non-polluting, maintenance-free: The diaphragm vacuum pump can completely recover the solvent, eliminate the environmental pollution caused by toxic and harmful organic solvents, and the health hazard to the operators and nearby people, even if the mixed solvent can be highly recovered; the diaphragm pump is a kind of dry, The dry, oil-free pump keeps the lab clean and quiet, eliminating the need for regular cleaning, changing tubes and changing water. The diaphragm vacuum pump is 100% maintenance free.
♦ Low noise, low vibration: Corrosion-resistant vacuum pump motor directly drives the power transmission, without intermediate transmission parts, plus the low stroke of the diaphragm and low noise characteristics, so that the product noise can be kept below 70dB.
♦ Overheat protection: Each product is equipped with a temperature protection switch. When the temperature in the body is too high, it will automatically shut down, wait for the temperature to cool and then start it by itself to ensure the stability and safety of the system.

Parameter:

P20 vacuum diaphragm pump parameters

MPC diaphragm pump features:

♦ Completely resistant to chemical corrosion
♦ Dry operation, no water and oil consumption
♦ Long service life and low repair rate
♦ Good environmental performance
♦ Small size and compact structure
♦ Especially suitable for long-term uninterrupted operation

Parameter:

Product

Motor Power

Ultimate Pressure

Dimensions

Model /German ILMVAC

W

Mbar

W/D/H

MPC 301 Z  230V

50Hz

1800

< 8

230*265*169

MPC201 T 230V

50Hz

90

< 2

200*260*150

MPC601 T 230V

50Hz

180

< 2

230*380*169

 MPC1201 T 230V

50Hz

440

< 2

540*300*240

DP-401 diaphragm pump features:

♦ Replace the circulating water vacuum pump and the rotary vane vacuum pump.
♦ No working medium is required, and there is no friction in the working part.
♦ The vacuum is stable, easy to control the degree of vacuum, and can be adjusted according to the needs of the experiment.
♦ All parts in contact with the gas are treated with Teflon (PTFE) surface and have complete chemical resistance.
♦ The valve plate is made of imported materials.
♦ Special motor is run by well-known motor manufacturer ODM, reasonable transmission design and self-cooling exhaust system for long-term continuous operation.
♦ Small size, light weight, easy to move, saving lab space.
♦ Convenient for repair and maintenance.

Parameter:

DP-401 diaphragm pump parameters
Rotary vane vacuum pumps and circulating water vacuum pumps are relatively inexpensive. Rotary vane vacuum pumps are used in short-path distillation systems to add cold well components to prevent the water vapor from damaging the vacuum pump.
 
The price of the diaphragm pump is higher, but its advantages are also outstanding. When purchasing a vacuum pump, it can be purchased according to your actual needs.


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