Pump cleaning device of high-temperature purification equipment

Abstract

The utility model discloses a pump cleaning device of high-temperature purification equipment, and relates to the technical field of pump cleaning. Comprising a screw pump and a cleaning liquid barrel, a shaft seal of the screw pump is connected with a shaft seal blowing electromagnetic valve, and the shaft seal blowing electromagnetic valve is connected with a blowing pipeline; the purging pipeline is connected with the screw pump through the purging electromagnetic valve; the cleaning liquid barrel is connected with the pump cleaning electromagnetic valve through a pipeline, the pump cleaning electromagnetic valve is connected with the screw pump through a pipeline, and the screw pump is connected with a silencer. A drain outlet of the silencer is connected with the pneumatic PVC blow-down valve; according to the utility model, various electromagnetic valves and pneumatic valves are combined with a cleaning and purging process, so that the maintenance period of the screw pump is greatly prolonged, and the problems of short service life and high maintenance cost of a vacuum pump of high-temperature purification equipment are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pump cleaning, in particular to a pump cleaning device for high-temperature purification equipment. Background Art

[0002] High-temperature vacuum purification equipment often uses dry screw pumps as the pump group of the vacuum system. The equipment will produce dust, acidic gas, water vapor, etc. during the high-temperature purification process, and the gas and dust are extracted through the vacuum system.

[0003] The vacuum system is composed of vacuum pipes, valves, filters, dry screw pumps, Roots pumps, etc. Since the impurities in the furnace cavity cannot be completely filtered out by the filter, a small amount of dust still enters the dry screw pump. At the same time, the water vapor and acidic gas generated during the high-temperature purification process will still enter the dry screw pump, which will cause the cavity and rotor of the dry screw pump to be blocked and corroded, shortening the service life of the dry screw pump and affecting the stability of the equipment. Utility Model Content

[0004] The utility model overcomes the shortcomings of the prior art, proposes a pump cleaning device for high-temperature purification equipment, and solves the problems of short service life of the vacuum pump of the high-temperature purification equipment and high maintenance cost of the vacuum pump.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions.

[0006] A pump cleaning device for high-temperature purification equipment comprises a screw pump and a cleaning liquid barrel, wherein the shaft seal of the screw pump is connected to a blow shaft seal electromagnetic valve, the blow shaft seal electromagnetic valve is connected to a purge pipeline, and the purge pipeline is connected to the screw pump through the purge electromagnetic valve;

[0007] The cleaning liquid barrel is connected to the pump cleaning solenoid valve through a pipeline, the pump cleaning solenoid valve is connected to the screw pump through a pipeline, and the screw pump is connected to a muffler; the sewage outlet of the muffler is connected to the pneumatic PVC sewage valve.

[0008] Furthermore, the shaft seal blowing solenoid valve is connected to the purge pipeline through a pressure reducing valve.

[0009] Furthermore, the pressure reducing valve, the purge solenoid valve and the shaft seal blowing solenoid valve are connected via a first three-way connection.

[0010] Furthermore, the pump cleaning solenoid valve is connected to a manual ferrule ball valve through a pipeline, and the manual ferrule ball valve is connected to a screw pump through a pipeline.

[0011] Furthermore, the screw pump, the manual sleeve ball valve and the purge solenoid valve are connected through a second three-way connection.

[0012] Furthermore, the sewage outlet of the muffler is connected with a manual PVC ball valve, and the manual PVC ball valve is connected with the pneumatic PVC ball valve through a PVC thread.

[0013] Furthermore, cleaning liquid is stored in the cleaning liquid barrel, one end of the first steel pipe is inserted into the cleaning liquid barrel, and the other end of the first steel pipe is connected to the pump cleaning solenoid valve.

[0014] The beneficial effects of the utility model compared with the prior art are:

[0015] The utility model uses a combination of various solenoid valves and pneumatic valves plus a certain cleaning and purging process, which greatly extends the maintenance cycle of the screw pump, improves the quality of high-temperature purification equipment operation, and reduces the cost of equipment use. The utility model solves the problems of short service life and high maintenance cost of vacuum pumps in high-temperature purification equipment.

[0016] The utility model adopts electromagnetic valve and pneumatic valve as driving elements, which reduces the time of manual switching and can realize remote control and automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Axonometric view of the pump cleaning device of the utility model Figure 1 ;

[0018] Figure 2 Axonometric view of the pump cleaning device of the utility model Figure 2 ;

[0019] Figure 3 It is a side view of the pump cleaning device described in the utility model.

[0020] In the figure: 1 is a screw pump, 2 is a pressure reducing valve, 3 is a purge solenoid valve, 4 is a shaft seal blowing solenoid valve, 5 is a first three-way valve, 6 is a pump cleaning solenoid valve, 7 is a cleaning liquid barrel, 9 is a first steel pipe, 10 is a manual ferrule ball valve, 11 is a second steel pipe, 12 is a muffler, 13 is a manual PVC ball valve, 14 is a pneumatic PVC drain valve, 15 is a PVC thread, and 16 is a second three-way valve. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail in combination with the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. The technical solution of the present invention is described in detail below in combination with the embodiments and the accompanying drawings, but the scope of protection is not limited thereto.

[0022] like Figure 1 , Figure 2 and Figure 3As shown, a pump cleaning device for high-temperature purification equipment proposed in this embodiment includes a screw pump 1, a pressure reducing valve 2, a purge solenoid valve 3, a shaft seal blowing solenoid valve 4, a pump cleaning solenoid valve 6, a cleaning liquid barrel 7, and a muffler 12; the pressure reducing valve 2 and the purge solenoid valve 3 and the shaft seal blowing solenoid valve 4 are connected through a first three-way valve 5; the shaft seal blowing solenoid valve 4 is connected to the shaft seal of the screw pump 1; the cleaning liquid barrel 7 contains cleaning liquid, one end of the first steel pipe 9 is inserted into the cleaning liquid barrel 7, and the other end of the first steel pipe 9 is connected to the pump cleaning solenoid valve 6, and the pump cleaning solenoid valve 6 is connected to the manual sleeve ball valve 10 through a second steel pipe 11; the screw pump 1, the manual sleeve ball valve 10 and the purge solenoid valve 3 are connected through a second three-way valve 16.

[0023] The sewage outlet of the muffler 12 connected to the screw pump 1 is connected with a manual PVC ball valve 13 , and the manual PVC ball valve 13 is connected with a pneumatic PVC ball valve 14 through a PVC thread 15 .

[0024] When the high-temperature purification equipment is running, the shaft seal blowing solenoid valve 4 is always open, and the nitrogen pressure drops to 0.5Mpa after passing through the pressure reducing valve 2. The nitrogen with stable air pressure flows through the first three-way valve 5 to the shaft seal of the screw pump 1 connected to the shaft seal blowing solenoid valve 4, so that a stable airflow always passes through the shaft seal of the screw pump 1, thereby achieving the purpose of protecting the shaft seal.

[0025] After the main valve of the high-temperature purification equipment is closed, the pump cleaning solenoid valve 6 and the pneumatic PVC drain valve 14 are opened, and the cleaning liquid is extracted through the first steel pipe 9 inserted into the cleaning liquid barrel 7. The cleaning liquid passes through the second steel pipe 11 and the normally open manual sleeve ball valve 10, and then passes through the second three-way 16. The cleaning liquid enters the screw pump 1 and flows out from the pneumatic PVC drain valve 14 at the same time.

[0026] One minute after the cleaning liquid enters the screw pump 1, the pump cleaning solenoid valve 6 is closed. After the pump cleaning solenoid valve 6 is closed, the screw pump 1 enters the idling mode, and five minutes later, the pneumatic PVC drain valve 14 is automatically closed.

[0027] After the screw pump 1 has been idling for 5 minutes, the purge solenoid valve 3 is opened, and nitrogen with stable air pressure flows from the pressure reducing valve 2 into the purge solenoid valve 3, and passes through the second three-way valve 16, and the nitrogen enters the screw pump 1 to realize the purge function. After purging the pump body of the screw pump 1 for one hour, the purge solenoid valve 3 is closed, and the screw pump 1 is closed at the same time, and the equipment is completely closed.

[0028] When the pump cleaning solenoid valve 6 connected to the manual card sleeve ball valve 10 fails and cannot be closed automatically, the normally open manual card sleeve ball valve 10 should be closed to achieve normal operation of the screw pump 1.

[0029] When the pneumatic PVC drain valve 14 connected to the drain outlet of the muffler 12 fails and cannot be closed automatically, the manual PVC ball valve 13 between the muffler 12 and the pneumatic PVC drain valve 14 should be closed to prevent the exhaust gas from entering the workshop.

[0030] The working principle of the utility model is:

[0031] During normal operation of the equipment, nitrogen with stable air pressure is delivered through the pressure reducing valve 2 to blow the shaft seal of the screw pump 1 through the frequently opened shaft seal solenoid valve. When the main valve of the equipment is closed, the pump cleaning solenoid valve 6 and the pneumatic PVC drain valve 14 are automatically opened to draw the cleaning liquid into the pump body of the screw pump 1 and discharge it from the pneumatic PVC drain valve 14. After one minute of drawing the cleaning liquid, the pump cleaning solenoid valve 6 is automatically closed. Thereafter, the screw pump 1 continues to idle for 5 minutes to allow the cleaning liquid to fully function. After that, the pneumatic PVC drain valve 14 is automatically closed. At the same time, the purge solenoid valve 3 is automatically opened, and nitrogen with stable air pressure enters the pump body of the screw pump 1 from the pressure reducing valve 2 through the purge solenoid valve 3 to purge the pump body. After purging the pump body of the screw pump 1 for one hour, the purge solenoid valve 3 is automatically closed, and the screw pump 1 is closed at the same time. The equipment is completely closed to complete the pump cleaning function.

[0032] The utility model uses various solenoid valves and pneumatic valves to perform combined cleaning of the pump body and the shaft seal of the screw pump 1 under certain processes, thereby making corresponding improvements and solutions to the problems of short maintenance period and high cost of the screw pump 1 in traditional equipment, extending the life of the screw pump 1 in the high-temperature purification equipment and increasing the stability of the high-temperature purification equipment.

[0033] The above content is a further detailed description of the utility model in combination with a specific preferred implementation method. It cannot be determined that the specific implementation methods of the utility model are limited to this. For ordinary technicians in the technical field to which the utility model belongs, they can make several simple deductions or substitutions without departing from the utility model, which should be regarded as belonging to the utility model and the scope of patent protection determined by the submitted claims.

Claims

1. A pump cleaning device for high temperature purification equipment, characterized in that: It comprises a screw pump (1) and a cleaning liquid barrel (7), wherein the shaft seal of the screw pump (1) is connected to a shaft seal blowing solenoid valve (4), and the shaft seal blowing solenoid valve (4) is connected to a purge pipeline; the purge pipeline is connected to the screw pump (1) via the purge solenoid valve (3); The cleaning liquid barrel (7) is connected to the pump cleaning solenoid valve (6) through a pipeline, the pump cleaning solenoid valve (6) is connected to the screw pump (1) through a pipeline, and the screw pump (1) is connected to a muffler (12); the sewage outlet of the muffler (12) is connected to a pneumatic PVC sewage valve (14).

2. A pump cleaning device for high temperature purification equipment according to claim 1, characterized in that: The shaft seal blowing solenoid valve (4) is connected to the blowing pipeline via a pressure reducing valve (2).

3. A pump cleaning device for high temperature purification equipment according to claim 2, characterized in that: The pressure reducing valve (2), the purge solenoid valve (3) and the shaft seal blowing solenoid valve (4) are connected via a first three-way valve (5).

4. A pump cleaning device for high temperature purification equipment according to claim 1, characterized in that: The pump cleaning solenoid valve (6) is connected to a manual sleeve ball valve (10) via a pipeline, and the manual sleeve ball valve (10) is connected to a screw pump (1) via a pipeline.

5. A pump cleaning device for high temperature purification equipment according to claim 4, characterized in that: The screw pump (1), the manual sleeve ball valve (10) and the purge solenoid valve (3) are connected via a second three-way connection (16).

6. A pump cleaning device for high temperature purification equipment according to claim 1, characterized in that: The sewage outlet of the muffler (12) is connected to a manual PVC ball valve (13), and the manual PVC ball valve (13) is connected to a pneumatic PVC sewage valve (14) via a PVC thread (15).

7. A pump cleaning device for high temperature purification equipment according to claim 1, characterized in that: The cleaning liquid barrel (7) contains cleaning liquid. One end of the first steel pipe (9) is inserted into the cleaning liquid barrel (7). The other end of the first steel pipe (9) is connected to the pump cleaning solenoid valve (6).

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