Parallel type air cooling roots vacuum pump system

Abstract

The utility model belongs to the technical field of air-cooled Roots vacuum pumps, in particular to a parallel air-cooled Roots vacuum pump system, which comprises at least two air-cooled Roots vacuum pumps connected in parallel, an exhaust port of each air-cooled Roots vacuum pump is connected with one end of an exhaust manifold, and the other end of the exhaust manifold is connected with an air inlet of a condenser. An air outlet of the condenser is connected with a reflux header pipe; and the reflux header pipe is connected with a reflux inlet of each air-cooled roots vacuum pump. According to the utility model, the use number of the condensers and the occupied area of the base can be effectively reduced, the production cost is low, the occupied space is small, and the maintenance is simple; and the opening degree of the valve can be adjusted according to working conditions, so that the backflow amount of the gas is adjusted, and the effects of stabilizing the gas temperature and improving the pumping efficiency are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of air-cooled Roots vacuum pumps, in particular to a parallel air-cooled Roots vacuum pump system. Background Art

[0002] The existing air-cooled Roots vacuum pumps are all used in combination with one condenser. The exhaust end of the condenser refluxes gas to the air-cooled Roots vacuum pump through a reflux pipe for purging and cooling. The problem is that each air-cooled Roots vacuum pump needs to have an independent condenser and base, which not only has high production costs but also occupies a large space and is inconvenient for installation and maintenance. Utility Model Content

[0003] In order to overcome the defects of the above-mentioned prior art, the utility model proposes a parallel air-cooled Roots vacuum pump system, which can effectively reduce the number of condensers used and the floor space of the machine base, has low production cost, small floor space and simple maintenance. The technical problem to be solved by the utility model is achieved through the following technical solutions:

[0004] A parallel air-cooled Roots vacuum pump system comprises at least two parallel air-cooled Roots vacuum pumps, the exhaust port of each air-cooled Roots vacuum pump is connected to one end of an exhaust main pipe, the other end of the exhaust main pipe is connected to an air inlet of a condenser, the air outlet of the condenser is connected to a reflux main pipe, and the reflux main pipe is respectively connected to the reflux port of each air-cooled Roots vacuum pump.

[0005] Furthermore, the reflux ports are respectively arranged on the left and right sides of the air-cooled Roots vacuum pump.

[0006] Furthermore, a valve is arranged on the reflux main pipe.

[0007] The utility model can effectively reduce the number of condensers used and the floor space of the machine base, has low production cost, small floor space and simple maintenance; and can adjust the valve opening according to the working conditions, thereby adjusting the gas reflux amount, playing the role of stabilizing the gas temperature and improving the extraction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0009] Figure 1 It is a schematic diagram of the structure of the utility model, such as Figure 1As shown, a parallel air-cooled Roots vacuum pump system includes at least two parallel air-cooled Roots vacuum pumps, the exhaust port of each air-cooled Roots vacuum pump is connected to one end of an exhaust main pipe 1, the other end of the exhaust main pipe 1 is connected to an air inlet 2.1 of a condenser 2, the air outlet 2.2 of the condenser 2 is connected to a reflux main pipe 3, and the reflux main pipe 3 is respectively connected to the reflux port of each air-cooled Roots vacuum pump.

[0010] The reflux ports are respectively arranged on the left and right sides of the air-cooled Roots vacuum pump, and a valve 4 is arranged on the reflux main pipe 3. There are three air-cooled Roots vacuum pumps in this embodiment, namely a first air-cooled Roots vacuum pump 5, a second air-cooled Roots vacuum pump 6 and a third air-cooled Roots vacuum pump 7. The exhaust port 5.1 of the first air-cooled Roots vacuum pump 5, the exhaust port 6.1 of the second air-cooled Roots vacuum pump 6 and the exhaust port 7.1 of the third air-cooled Roots vacuum pump 7 are respectively connected to one end of the exhaust main pipe 1, the reflux port 5.2 of the first air-cooled Roots vacuum pump 5 is connected to the reflux main pipe 3 through a branch pipe 8, the reflux port 6.2 of the second air-cooled Roots vacuum pump 6 is connected to the reflux main pipe 3 through a branch pipe 9, and the reflux port 7.2 of the third air-cooled Roots vacuum pump 7 is connected to the reflux main pipe 3 through a branch pipe 10.

[0011] In short, the utility model can effectively reduce the number of condensers used and the floor space of the machine base, has low production cost, small footprint, and simple maintenance; and can adjust the valve opening according to the working conditions, thereby adjusting the gas reflux volume, thereby stabilizing the gas temperature and improving the extraction efficiency.

Claims

1. A parallel air-cooled Roots vacuum pump system, characterized in that it includes At least two air-cooled Roots vacuum pumps are connected in parallel, the exhaust port of each air-cooled Roots vacuum pump is connected to one end of an exhaust main pipe, the other end of the exhaust main pipe is connected to the air inlet of a condenser, the air outlet of the condenser is connected to a reflux main pipe, and the reflux main pipe is respectively connected to the reflux port of each air-cooled Roots vacuum pump.

2. The parallel air-cooled Roots vacuum pump system according to claim 1 is characterized in that: The reflux ports are respectively arranged on the left and right sides of the air-cooled Roots vacuum pump.

3. The parallel air-cooled Roots vacuum pump system according to claim 1 is characterized in that: A valve is arranged on the reflux main pipe.

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