JZJD series roots screw vacuum unit

JZJD series Roots-screw vacuum unit is a dry vacuum unit composed of ZJY type Roots pump as the main shaft pump and VDP series variable pitch screw vacuum pump as the front stage pump. Compared with a single variable pitch vacuum pump, the JZJD series Roots-screw vacuum unit is more energy efficient and the unit can operate at a lower ultimate pressure and can obtain a larger extraction rate.

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JZJD series roots screw vacuum unit

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JZJD series roots screw vacuum unit

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Main Features

1. Higher vacuum performance can be obtained, the ultimate vacuum can reach 0.5Pa, shorten the reaction time and improve the quality of users' products.

2. There is no oil or water in the pump cavity, no pollution to the pumped system, clean vacuum can be obtained, both energy saving and environmental protection.

3. There is no oil or water in the pump cavity, and it is very easy to recover the solvent.

4. There is no discharge of waste oil and wastewater during the working process, and there is no pollution to the environment.

5. The Roots pump is equipped with a relief valve, which avoids the over-compression state of the Roots pump and has been carried out in the best working state, with obvious energy saving effect.

6. The pump cavity of the Roots pump is all treated with nickel plating, and the pump cavity of the screw vacuum pump is coated with Teflon coating or Hastelloy coating, which can remove water vapor, solvent gas and various corrosive media.

7. The requirements for cooling water are low, and ordinary circulating water can meet the requirements, and the amount of cooling water is small.

8. The Roots screw vacuum unit can still maintain high pumping speed performance under high vacuum state, is not affected by cooling water temperature, and has outstanding ability to adapt to working conditions and environment.

9. Roots pump and screw pump can be equipped with mechanical seals, with high sealing reliability, zero medium leakage, low noise, low vibration, and stable and reliable operation.

Technical performance parameters

Specifications and models	Vacuum pump model		Pumping rateL/s	ultimate pressure（Pa）	Cooling water volume (L/min)	Total powerKW
	main pump	Front stage pump
JZJD70-1	ZJY-70	VDP-200	70	0.5	20	5.5
JZJD150-2	ZJY-150	VDP-320	150	0.5	25	8.5
JZJD150-1	ZJY-150	VDP-430	150	0.5	30	10.5
JZJD300-2	ZJY-300	VDP-430	300	0.5	30	11.5
JZJD300-1	ZJY-300	VDP-650	300	0.5	35	15
JZJD600-4	ZJY-600	VDP-650	600	0.5	35	18.5
JZJD600-2	ZJY-600	VDP-900	600	0.5	40	22.5
JZJD1200-4	ZJY-1200	VDP-900	1200	0.5	50	26
JZJD1200-2	ZJY-1200	VDP-1500	1200	0.5	60	41

Description: 1. The above is the recommended standard series. Due to different working conditions in actual production and application, the inhalation gas and pressure will change a lot, so the selection should be based on the actual extraction process, gas release process, and condensable gas condensation., suction pressure time change, etc. for calculation and verification.

2. The unit of the main shaft pumping rate in the table is L/s, and the unit of the front pump pumping rate is m3/h.

3. For the technical indicators of a single pump, please refer to the performance parameter table of each pump.

4. The above parameters are only used as a reference for selection. Please provide detailed technical requirements for working conditions when ordering.

5. The Roots screw vacuum unit can be connected in series with a multi-stage Roots vacuum pump. Please call for specific technical configuration parameters.

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