CN220248358U

CN220248358U - Linkage adjusting device for vacuumizing rotary vane pump

Info

Publication number: CN220248358U
Application number: CN202320601872.8U
Authority: CN
Inventors: 王伟; 刘勇; 王俊; 徐升; 杨真理
Original assignee: Wuhan Changli New Material Technology Co ltd
Current assignee: Wuhan Changli New Material Technology Co ltd
Priority date: 2023-03-24
Filing date: 2023-03-24
Publication date: 2023-12-26
Anticipated expiration: 2033-03-24

Abstract

The utility model relates to the field of linkage transformation of rotary vane pumps, in particular to a linkage adjusting device of a vacuumizing rotary vane pump. The linkage adjusting device for the vacuumizing rotary vane pump comprises a No. 1 pump, the No. 1 pump and the No. 2 pump are connected through the same oil pipeline, the No. 1 pump and the No. 2 pump are connected with a monitoring PLC loop, a normally open point is arranged in the monitoring PLC loop and is connected with the No. 1 pump and the No. 2 pump in parallel, a normally closed point is arranged in the monitoring PLC loop and is connected with the No. 1 pump and the No. 2 pump in series. According to the linkage adjusting device for the vacuumizing rotary vane pump, on the basis of an original PLC control loop of the rotary vane pump, the function of simultaneously starting and stopping two pumps in the same group is added, so that the pumps in the same group can be synchronously started and stopped when working, further, the situation that the pumps in the same group are started and stopped in an asynchronous mode, the rotary vane pump with high pressure sucks oil in the other pump is avoided, abrasion of an oil return valve of the pump group is reduced, and further the fault rate of the pump group is reduced.

Description

Linkage adjusting device for vacuumizing rotary vane pump

Technical Field

The utility model relates to the field of linkage transformation of rotary vane pumps, in particular to a linkage adjusting device of a vacuumizing rotary vane pump.

Background

The inlet and outlet areas of the coating workshop are respectively provided with 8 rotary vane pumps, two of which are in a group, and are connected by the same pipeline for vacuumizing. The operation of the pump unit is carried out for a long time, so that the oil return valve of the pump unit is worn, and when the two pumps are started and stopped, the rotary vane pump with high pressure can suck oil in the other pump unit, so that the pump unit is in fault.

Therefore, it is necessary to provide a new linkage adjusting device for the vacuumizing rotary vane pump to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a linkage adjusting device for a vacuumizing rotary vane pump.

The utility model provides a linkage adjusting device of a vacuumizing rotary vane pump, which comprises the following components: no. 1 pump, no. 1 pump and No. 2 pump are connected through same oil circuit pipeline, no. 1 pump and No. 2 pump are connected with the control PLC return circuit, set up normally open point in the control PLC return circuit, and normally open point and No. 1 pump and No. 2 pump are parallelly connected each other respectively, set up normally closed point in the control PLC return circuit, and normally closed point is established ties each other with No. 1 pump and No. 2 pump respectively.

Preferably, pump No. 1 and pump No. 2 are identical to the series and parallel points in the PLC circuit.

Preferably, the oil passage includes: the pump body, a plurality of pump bodies are the symmetry and set up the distribution, and the equal fixed mounting of output of pump body has the fluid-discharge tube, and the equal fixed mounting of input of pump body has the connecting pipe, and the connecting pipe keeps away from fixed connection between the one end of pump body and the main part pipe, and the pump body passes through electric connection between connecting wire and the control box.

Preferably, the eight pump bodies are divided into four groups.

Preferably, eight pump bodies are respectively arranged in the inlet and outlet areas of the coating workshop.

Compared with the related art, the linkage adjusting device for the vacuumizing rotary vane pump has the following beneficial effects:

on the basis of an original PLC control loop of the rotary vane pump, the function of starting and stopping the same group of two pumps is added, so that the same group of pumps can synchronously start and stop when working, further the situation that the same group of pumps are started and stopped in a non-synchronous way, the rotary vane pump with high pressure sucks oil in the other pump, abrasion of an oil return valve of the pump group is reduced, and the failure rate of the pump group is reduced.

Drawings

FIG. 1 is a schematic diagram of a preferred embodiment of a linkage regulator for a vacuum pump according to the present utility model;

fig. 2 is a schematic structural diagram of a linkage adjusting device of a vacuum-pumping rotary vane pump.

Reference numerals in the drawings: 1. a pump body; 2. a liquid discharge pipe; 3. a connecting pipe; 4. a main body tube; 5. connecting wires; 6. and a control box.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

Specific implementations of the utility model are described in detail below in connection with specific embodiments.

Referring to fig. 1, an embodiment of the present utility model provides a linkage adjustment device for a vacuum-pumping rotary vane pump, where the linkage adjustment device for a vacuum-pumping rotary vane pump includes: no. 1 pump, be connected through same oil circuit pipeline between No. 1 pump and the No. 2 pump, no. 1 pump and No. 2 pump are connected with the control PLC return circuit, set up normally open point in the control PLC return circuit, and normally open point and No. 1 pump and No. 2 pump are parallelly connected each other respectively, set up normally closed point in the control PLC return circuit, and normally closed point is established ties each other with No. 1 pump and No. 2 pump respectively.

It should be noted that: 8 rotary vane pumps are arranged in a film plating workshop, the 8 pumps are divided into four groups of A groups, B groups, C groups and D groups, the rotary vane pumps in each pump group can start and stop automatically, and meanwhile, a synchronous start and stop program of the rotary vane pumps in the pump group is additionally arranged, so that the condition that the oil in the other pump is sucked out by the rotary vane pump with high pressure, thereby leading the pump group to malfunction is avoided;

A. the rotary vane pumps in the B, C, D four pump sets are all set as a No. 1 pump and a No. 2 pump, two functions of a simultaneous start button and a stop button are added in an original PLC control loop, so that two pumps with the same type are started and stopped simultaneously, a normally open point (the start of the No. 1 pump and the start of the No. 2 pump) is set as the simultaneous start button, and the normally open point are connected in parallel to the PLC loop of the No. 1 pump; then, a normally closed point (pump No. 1, pump No. 2 is stopped) is set as a simultaneous stop button, which is connected in series to the loop of pump No. 1 PLC. So far, the program of the pump No. 1 is modified. The same points were connected in parallel and in series to the PLC circuit of pump No. 2 in the same manner. Thus, the function setting of starting and stopping the same group of rotary vane pumps is completed;

in the Siemens upper computer WINCC, firstly adding starting and stopping variables added in the PLC, then opening a picture of a pump group, adding button graphics, setting attributes, sizes, colors and the like, and then linking the graphics and the variables. Through debugging, the pumps No. 1 and No. 2 can be started and stopped simultaneously, and the expected effect is achieved.

In the embodiment of the present utility model, referring to fig. 1, the pump No. 1 and the pump No. 2 are identical to the serial connection and parallel connection points in the PLC circuit;

it should be noted that: the same PLC loop of the No. 1 pump and the No. 2 pump can be ensured to be the same by the same arrangement of the serial point and the parallel point.

In an embodiment of the present utility model, referring to fig. 2, the oil path includes: the pump body 1, a plurality of the pump body 1 is the symmetry setting and distributes, the equal fixed mounting of output of the pump body 1 has fluid-discharge tube 2, the equal fixed mounting of input of the pump body 1 has connecting pipe 3, and the connecting pipe 3 keeps away from between the one end of the pump body 1 and the main part pipe 4 fixed connection, electric connection between the pump body 1 through connecting wire 5 and the control box 6.

In the embodiment of the present utility model, referring to fig. 2, eight pump bodies 1 are divided into four groups.

In the embodiment of the present utility model, referring to fig. 2, eight pump bodies 1 are respectively disposed at the inlet and outlet areas of the plating shop.

The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.

Claims

1. The utility model provides a vacuum-pumping rotary vane pump linkage adjusting device which characterized in that includes:

no. 1 pump, be connected through same oil circuit pipeline between No. 1 pump and the No. 2 pump, no. 1 pump and No. 2 pump are connected with the control PLC return circuit, set up normally open point in the control PLC return circuit, and normally open point and No. 1 pump and No. 2 pump are parallelly connected each other respectively, set up normally closed point in the control PLC return circuit, and normally closed point is established ties each other with No. 1 pump and No. 2 pump respectively.

2. The vacuum-pumping rotary-vane pump linkage adjustment device of claim 1 wherein the pump No. 1 and pump No. 2 are identical to the series and parallel points in the PLC circuit.

3. The vacuum-pumping rotary-vane pump linkage adjustment device of claim 1 wherein the oil circuit comprises: pump body (1), a plurality of pump body (1) are the symmetry setting and distribute, the equal fixed mounting of output of pump body (1) has fluid-discharge tube (2), the equal fixed mounting of input of pump body (1) has connecting pipe (3), and fixed connection between one end and main part pipe (4) that pump body (1) were kept away from to connecting pipe (3), electric connection between pump body (1) through connecting wire (5) and control box (6).

4. A vacuum-pumping rotary-vane pump linkage adjustment device according to claim 3, characterized in that eight pump bodies (1) are grouped into four groups.

5. A vacuum-pumping rotary-vane pump linkage adjustment device according to claim 3, characterized in that eight pump bodies (1) are respectively arranged in the inlet and outlet areas of the coating shop.