Vacuum pump cooling water filtering device facilitating pollution discharge

Abstract

The utility model discloses a vacuum pump cooling water filtering device convenient for pollution discharge. The vacuum pump cooling water filtering device comprises an upper end cover and a lower end conical base which are in threaded connection, a cross-shaped water flow pipeline is arranged in the upper end cover, the two ends of a transverse pipeline of the water flow pipeline are connected with a water inlet and a water outlet correspondingly, and the end connected with the water inlet communicates with a first pipeline. The central part of the bottom of the upper end cover is concave inwards to form a cylindrical groove; the lower end of the longitudinal pipeline is clamped into an opening in the top of the cylindrical groove and extends out; a rotatable cylindrical rotating shaft is arranged in the longitudinal pipeline, and the bottom and the side face of the rotating shaft are opened and communicated; the lower-end conical base is hollow, an annular transparent net and a filter part are arranged at an upper opening in the lower-end conical base, the filter part comprises a vertical pipe, an upper opening of the vertical pipe is opposite to an opening in the top of the cylindrical groove, a connecting piece and a valve element connected with the bottom of the cylindrical rotating shaft extend into the vertical pipe, and a filter net inserting groove is formed in the bottom of the vertical pipe; and the stainless steel cylindrical filter screen is inserted into the filter screen slot, so that non-stop back-flushing cleaning and pollution discharge are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum system machinery, in particular to a vacuum pump cooling water filtering device which is convenient for sewage discharge. Background Art

[0002] The common vacuum system cooling water circulation system is an open circulation system. The cooling water is cooled by convection with the outdoor air in the cooling tower. Since the cooling water contacts with dust particles and other impurities in the air during the circulation process, the impurity content in the cooling water is high; at the same time, as the cooling water pipeline has been in operation for a long time, the pipeline is corroded, resulting in more rust residue, so the cooling water contains some large particles of impurities. At present, the Y-type cast copper filter occupies the leading position of industrial cooling water filters with its mature manufacturing process, unified size standards, strong quality and low cost. Usually, the Y-type cast copper filter is used in the cooling water inlet pipeline of the vacuum pump group to filter the cooling water. However, with the circulation of cooling water, large particles of impurities will accumulate in the Y-type cast copper filter of the vacuum pump inlet pipeline, the water flow rate will decrease, resulting in a decrease in the heat exchange effect of the vacuum pump, an increase in the operating temperature, and in severe cases, it will cause the equipment to shut down, affecting the stable production of the factory. Therefore, it is necessary to clean or replace the Y-type cast copper filter in time.

[0003] However, due to the limitations of size and cleaning methods, traditional Y-type cast copper filters can only be manually disassembled, cleaned or replaced frequently and for a long time after shutdown to avoid the accumulation of impurities in the Y-type cast copper filter. On the one hand, frequent shutdowns will affect the stable production and production efficiency of the factory. On the other hand, long-term disassembly will cause the disassembly port of the Y-type cast copper filter to wear and deform, further increasing the difficulty of cleaning or replacing the filter. In addition, at present, electric filtering devices are rarely used for filtering vacuum pump cooling water, which are more expensive, difficult to spare parts, and more complicated to maintain and repair. Utility Model Content

[0004] In view of the above-mentioned problems and defects existing in the prior art, the utility model provides a vacuum pump cooling water filter device which is convenient for sewage discharge, and replaces the Y-shaped cast copper filter used in the cooling water inlet pipeline of the vacuum pump group. While achieving the same filtering effect by using the proposed filter device, it can realize cleaning and sewage discharge without stopping the vacuum pump group, thereby greatly reducing the workload and working time of equipment maintenance and improving production efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A vacuum pump cooling water filter device convenient for sewage discharge comprises an upper end cover connected by threads and a lower conical base;

[0007] Symmetrical water inlets and water outlets are provided on both sides of the upper end cover, a cross-shaped water flow pipeline is provided inside the upper end cover, the two ends of the transverse pipeline of the water flow pipeline are respectively connected to the water inlet and the water outlet, and one end of the transverse pipeline connected to the water inlet is connected to the first pipeline; the bottom center part of the upper end cover is concave to form a cylindrical groove, the top of the cylindrical groove is open, and the lower end of the longitudinal pipeline is inserted into the opening at the top of the cylindrical groove and extends out; a rotatable cylindrical rotating shaft is provided in the longitudinal pipeline, the bottom and side of the rotating shaft are opened and penetrated, and the rotating shaft is in close contact with the inner wall of the longitudinal pipeline;

[0008] The interior of the conical base at the lower end is hollow and an annular transparent net and a filter are provided at the upper opening inside. The filter includes a standpipe. The upper opening of the standpipe is opposite to the opening at the top of the cylindrical groove. The connecting piece and the valve core connected to the bottom of the cylindrical rotating shaft extend into the standpipe. A filter slot is provided at the bottom of the standpipe, and a stainless steel cylindrical filter is inserted into the filter slot.

[0009] According to a further technical solution, the bottom surface of the rotating shaft is flush with the bottom surface of the longitudinal pipe, and the bottom of the rotating shaft is connected to the valve core outside the water pipe through a connecting piece.

[0010] According to a further technical solution, a first opening is provided at the bottom of the upper end cover, and an outlet of the first pipe matches the first opening.

[0011] According to a further technical solution, a clip bent upward and inward is provided at the bottom of the side of the riser, and the clip and the side of the riser form a filter slot.

[0012] In a further technical solution, a first internal thread is provided on the top inner wall of the lower conical base, and a first external thread is provided on the bottom outer wall of the upper end cover, and the first internal thread matches the first external thread;

[0013] A second external thread is provided on the outer wall of the upper middle portion of the vertical pipe, and a second internal thread is provided on the inner wall of the cylindrical groove, and the second external thread matches the second internal thread.

[0014] A further technical solution is that the outer side of the annular transparent net is fixedly connected to the inner wall of the lower conical base, and the inner side of the annular transparent net is fixedly connected to the outer wall of the standpipe, and the fixed connection position is below the second external thread of the outer wall of the standpipe; the connecting piece and the valve core connected to the bottom of the rotating shaft extend into the standpipe, and the lower part of the connection between the standpipe and the annular transparent net is hollowed out.

[0015] According to a further technical solution, a sealing ring is provided at the contact surface between the upper end cover and the lower conical base; and a sealing ring is provided at the contact surface between the cylindrical groove and the vertical pipe.

[0016] A further technical solution is that a cylindrical valve fixing column protrudes from the top surface of the upper end cover, a through hole is provided inside the valve fixing column, a cylindrical valve passes through the through hole, the top end of the cylindrical valve extends out of the valve fixing column, the top surface of the rotating shaft is flush with the top surface of the longitudinal pipe, the bottom end of the cylindrical valve extends out of the through hole and is fixedly connected to the top of the rotating shaft; a valve rotating shaft is fixedly provided on the top of the cylindrical valve.

[0017] According to a further technical solution, the valve fixing column is also covered with a hexagonal end cover, the hexagonal end cover is a hexagonal prism shell structure with an opening on one side and a hole on the other side, and the valve shaft passes through the opening on the hexagonal end cover;

[0018] A third external thread is provided on the outer wall of the valve fixing column, and a third internal thread is provided on the inner wall of the hexagonal end cover, and the third external thread matches the third internal thread.

[0019] According to a further technical solution, a sewage outlet is provided at the lower end of the lower conical base, and a sewage valve is provided at the sewage outlet.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. The vacuum pump cooling water filter device for easy sewage discharge proposed by the utility model further optimizes the sewage discharge method compared with the traditional Y-type cast copper filter, improves the traditional disassembly and assembly of the filter screen to use water flow backwashing to clean the filter screen, and has higher cleaning efficiency; optimizes the slag storage space, and the slag storage space is larger; at the same time, a sewage discharge channel is set, and the sewage discharge efficiency is higher, which can realize the sewage discharge operation of the vacuum pump of the filter device online without stopping;

[0022] 2. The vacuum pump cooling water filter device that is easy to discharge sewage proposed by the utility model, after being installed on the cooling water inlet pipeline of the vacuum pump, avoids the difficulty of removing the filter after the filter device is blocked and the equipment downtime caused by the disassembly operation. The filter can be cleaned with only convenient operations, thereby greatly reducing the maintenance workload and working time of the vacuum equipment.

[0023] 3. The vacuum pump cooling water filter device that is convenient for sewage discharge proposed in the utility model has a simple structure, is easy to manufacture and install, and can be equivalently scaled in size according to the actual space requirements of the equipment. It can be manufactured using 3D printing technology, providing many equipment with a cooling water filter device with faster cleaning efficiency, larger slag storage space, and higher sewage discharge efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0025] Figure 1 It is a schematic diagram of the overall structure of the vacuum pump cooling water filter device which is convenient for sewage discharge according to the utility model;

[0026] Figure 2 It is a schematic diagram of the specific structure of the vacuum pump cooling water filter device for easy sewage discharge described in the utility model;

[0027] Figure 3 It is a schematic diagram of water flow when the vacuum pump cooling water filter device for easy sewage discharge of the utility model works in the filtering mode;

[0028] Figure 4 It is a schematic diagram of water flow when the vacuum pump cooling water filter device for easy sewage discharge of the utility model works in a backwash mode.

[0029] Among them, 1. upper end cover; 2. lower end conical base; 3. water inlet; 4. water outlet; 5. water flow pipe; 6. cylindrical groove; 7. rotating shaft; 8. first pipe; 9. first opening; 10. annular mesh; 11. vertical pipe; 12. connecting piece; 13. valve core; 14. filter slot; 15. valve fixing column; 16. cylindrical valve; 17. valve shaft; 18. hexagonal end cover; 19. sewage outlet. DETAILED DESCRIPTION

[0030] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] like Figure 1As shown, the utility model discloses a vacuum pump cooling water filter device which is convenient for sewage discharge, which realizes faster cleaning efficiency, larger slag storage space and higher sewage discharge efficiency. The filter device comprises an upper end cover 1 and a lower conical base 2. Industrial circulating water is filtered by adopting a method of water inlet outside the filter screen and water outlet inside the filter screen. The filtered impurities are temporarily stored in the cavity area of ​​the lower conical base. The sewage discharge valve of the lower conical base can be opened to realize effective sewage discharge. In addition, the valve angle is changed by rotating the valve shaft on the upper end cover, thereby driving the cylindrical valve to rotate, and then driving the cylindrical rotating shaft to rotate, which can change the size and direction of the water flow and realize reverse flushing of the filter screen.

[0033] like Figure 2 As shown, the filtering device is arranged in the cooling water inlet pipeline, and comprises an upper end cover 1 and a lower conical base 2, and the upper end cover 1 and the lower conical base 2 are connected by threads. Among them, the upper end cover 1 is a cylindrical structure, and symmetrical water inlets 3 and water outlets 4 are arranged on both sides of the upper end cover 1. Cooling water enters through the water inlet 3, and filtered cooling water flows out through the water outlet 4. A water flow pipe 5 is arranged inside the upper end cover 1, and the water flow pipe 5 is a cross-shaped pipe, the transverse pipe of the cross-shaped pipe is a long pipe, and the longitudinal pipe of the cross-shaped pipe is a short pipe, and the two ends of the transverse pipe are respectively connected to the water inlet and the water outlet. The bottom center of the upper end cover 1 is concave to form a cylindrical groove 6, the top of the cylindrical groove 6 is open, and the lower end of the longitudinal pipe inside the upper end cover 1 is inserted into the opening at the top of the cylindrical groove 6 and extends out; a rotatable cylindrical rotating shaft 7 is provided in the longitudinal pipe, the bottom and side of the rotating shaft 7 are open and pass through, and the rotating shaft 7 is in close contact with the inner wall of the longitudinal pipe to form a sealing structure to prevent water from entering between the rotating shaft and the longitudinal pipe. In addition, in this embodiment, the water flow pipe is a cooling water flow channel, and the inner diameter size of the water flow pipe is the same as the inner diameter size of the external cooling water pipe.

[0034] Furthermore, the bottom surface of the cylindrical rotating shaft 7 is flush with the bottom surface of the longitudinal pipe, and the bottom of the cylindrical rotating shaft 7 is connected to the valve core 13 outside the water flow pipe through the connecting piece 12.

[0035] Furthermore, one end of the transverse pipe connected to the water inlet is connected to the first pipe 8, and the bottom of the upper end cover is provided with a first opening 9, and the outlet of the first pipe 8 matches the first opening 9. After the cooling water enters through the water inlet of the transverse pipe, the side opening of the cylindrical rotating shaft in the longitudinal pipe faces the other end of the transverse pipe, thereby blocking the entering cooling water, so that the cooling water enters the first pipe through the transverse pipe and flows out from the outlet of the first pipe. The outflowing cooling water enters the lower conical base, enters from the bottom opening of the cylindrical rotating shaft in the lower conical base, flows out to the other end of the transverse pipe through the side opening of the cylindrical rotating shaft, and flows out from the water outlet.

[0036] The lower conical base 2 is a conical structure that is wide at the top and narrow at the bottom. The lower conical base 2 is hollow inside and an annular permeable net 10 and a filter are provided at the upper opening inside. The filter includes a standpipe 11 that is open at the top and closed at the bottom. The upper opening of the standpipe 11 is opposite to the opening at the top of the cylindrical groove. The connector 12 and the valve core 13 connected to the bottom of the cylindrical rotating shaft 7 extend into the standpipe 11. The bottom of the standpipe 11 is provided with a filter slot 14, and a stainless steel cylindrical filter is inserted into the filter slot 14. In this embodiment, the lower conical base is a conical through-hole thin-walled structure, the outer side of which is a polyhedron, and the inner side of which is a smooth inner surface.

[0037] Specifically, the lower conical base 2 is hollow inside and an annular mesh 10 and a filter are provided at the upper opening inside. The outer side of the annular mesh 10 is fixedly connected to the inner wall of the lower conical base 2, and the inner side of the annular mesh 10 is fixedly connected to the outer wall of the standpipe 11, so as to stabilize the standpipe. The connector 12 and the valve core 13 connected to the bottom of the cylindrical rotating shaft 7 extend into the standpipe 11. The lower part of the connection between the standpipe 11 and the annular mesh 10 is hollowed out. The bottom of the standpipe 11 is provided with a filter slot 14, and a stainless steel column filter is installed in the filter slot by plug-in. Preferably, a clip bent upward and inward is provided at the bottom of the side of the standpipe 11, and the clip and the side of the standpipe form a filter slot 14, so as to fix the stainless steel column filter, and the filter is used to achieve the filtering function.

[0038] The upper end cover 1 and the lower end conical base 2 are connected by threads, specifically, a first internal thread is provided on the top inner wall of the lower end conical base 2, a first external thread is provided on the bottom outer wall of the upper end cover 1, and the first internal thread matches the first external thread; at the same time, a second external thread is provided on the outer wall of the upper middle part of the standpipe 11, and a second internal thread is provided on the inner wall of the cylindrical groove 6, and the second external thread matches the second internal thread. Preferably, the inner side of the annular mesh 10 is fixedly connected to the outer wall of the standpipe 11, and the fixed connection position is below the second external thread of the outer wall of the standpipe 11.

[0039] As another embodiment, the upper end cover 1 and the lower conical base 2 are connected by threads and sealed with a matching tetrafluoroethylene O-ring, that is, a sealing ring is placed on the contact surface between the upper end cover 1 and the lower conical base 2 and the cylindrical groove 6 and the vertical pipe 11, so as to play a sealing role when fixed by threaded connection.

[0040] Furthermore, a cylindrical valve fixing column 15 protrudes from the top surface of the upper end cover 1, and a through hole is provided inside the valve fixing column 15, and a cylindrical valve 16 passes through the through hole, and the top end of the cylindrical valve 16 extends out of the valve fixing column 15, and the top surface of the longitudinal cylindrical rotating shaft 7 is flush with the top surface of the longitudinal pipeline, and the bottom end of the cylindrical valve 16 extends out of the through hole and is fixedly connected to the top of the cylindrical rotating shaft 7. In addition, a valve rotating shaft 17 is fixedly provided at the top of the cylindrical valve 16, and the cylindrical rotating shaft 7 in the longitudinal pipeline is rotated by rotating the valve rotating shaft 17, thereby changing the direction of the side opening of the cylindrical rotating shaft 7. In this embodiment, the valve rotating shaft 17 adopts a straight-line structure, and when it is perpendicular to the arrow mark marked on the upper surface of the upper end cover, the water flows in the forward direction, that is, water enters the filter element from the outside and flows out from the inside, and when it is parallel to the arrow mark marked on the upper surface of the upper end cover, the water flows in the reverse direction, that is, water enters the filter element from the inside and flows out from the outside.

[0041] As another embodiment, the valve fixing column 15 is also covered with a hexagonal end cap 18, which is a hexagonal prism shell structure with an opening on one side and a hole on the other side. The valve shaft 17 passes through the opening on the hexagonal end cap 18. The outer wall of the valve fixing column 15 is provided with a third external thread, and the inner wall of the hexagonal end cap 18 is provided with a third internal thread. The third external thread and the third internal thread match each other. The hexagonal end cap is fixed with the valve fixing column bolts to stabilize the valve shaft. Preferably, when the hexagonal end cap 18 is bolted to the valve fixing column 15, a matching tetrafluoroethylene O-ring is used for sealing, that is, a sealing ring is placed on the contact surface where the hexagonal end cap and the valve fixing column are bolted, so as to play a sealing role when fixed by threaded connection.

[0042] Furthermore, a sewage outlet 19 is provided at the lower end of the lower conical base 2, and a sewage valve is provided at the sewage outlet 19, and sewage can be effectively discharged by opening the sewage valve. In fact, a slag storage part is formed inside the entire lower conical base, and the slag storage part includes a conical space formed by the inner cavity of the lower conical base shell, the outside of the stainless steel filter screen, and the bottom surface of the upper cover.

[0043] The specific working process of the utility model is as follows:

[0044] like Figure 3As shown, the water inlet 3 and the water outlet 4 on both sides of the upper end cover 1 of the filter device are connected to the cooling water pipeline. In normal use, that is, the filtering mode, the valve shaft 17 is rotated perpendicular to the radial direction of the cooling water pipeline. At this time, after the cooling water enters through the water inlet 3 of the horizontal pipeline, the side opening of the cylindrical rotating shaft 7 in the longitudinal pipeline faces the other end of the horizontal pipeline, thereby blocking the entering cooling water, so that the cooling water enters the first pipeline 8 through the horizontal pipeline and flows out from the outlet of the first pipeline 8. The outflowing cooling water enters the lower end conical base 2, and after filtering impurities through the stainless steel filter screen in the lower end conical base 2, it enters through the valve core 13 and the bottom opening of the cylindrical rotating shaft 7, and flows out to the other end of the horizontal pipeline through the side opening of the cylindrical rotating shaft 7, and flows out from the water outlet. At this time, the cooling water passes through the filter screen from the outside to the inside of the water flow pipeline to filter impurities and then enters the vacuum equipment;

[0045] like Figure 4 As shown, in the filter blockage or backwash mode, the valve shaft 17 is rotated to make it parallel to the radial direction of the cooling water pipe. At this time, after the cooling water enters through the water inlet 3 of the transverse pipe, since the side opening of the cylindrical rotating shaft in the longitudinal pipe faces the water inlet end of the transverse pipe, the cooling water enters the first pipe 8 through the transverse pipe on the one hand, and flows out from the outlet of the first pipe 8. The outflowing cooling water enters the lower conical base 2, and on the other hand, after passing through the side opening of the cylindrical rotating shaft 7, it flows out from its bottom opening to the lower conical base 2. In the process of outflow, the cooling water backwashes impurities, rust residues, etc. through the stainless steel filter screen in the lower conical base 2. At this time, the drain valve of the lower conical base 2 is opened, and the water with impurities and rust residues in the lower conical base is directly discharged through the drain valve. After a short backwash, the filter screen can be kept clean, and the cone slag storage space can ensure a higher sewage discharge efficiency in the backwash mode.

[0046] After the sewage is discharged, adjust to normal use, i.e. filtering mode, and filter the cooling water.

[0047] The vacuum pump cooling water filter device which is convenient for draining sewage proposed by the utility model can avoid the difficulty of removing the filter screen after the filter device is blocked and the equipment downtime caused by the removal operation after being installed on the cooling water inlet pipeline of the vacuum pump. The filter screen can be cleaned only by convenient operation, thereby greatly reducing the maintenance workload and working time of the vacuum equipment.

[0048] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A vacuum pump cooling water filter device that is easy to discharge sewage, characterized in that: It includes an upper end cover and a lower conical base connected by a thread; Symmetrical water inlets and water outlets are provided on both sides of the upper end cover, a cross-shaped water flow pipeline is provided inside the upper end cover, the two ends of the transverse pipeline of the water flow pipeline are respectively connected to the water inlet and the water outlet, and one end of the transverse pipeline connected to the water inlet is connected to the first pipeline; the bottom center part of the upper end cover is concave to form a cylindrical groove, the top of the cylindrical groove is open, and the lower end of the longitudinal pipeline is inserted into the opening at the top of the cylindrical groove and extends out; a rotatable cylindrical rotating shaft is provided in the longitudinal pipeline, the bottom and side of the rotating shaft are opened and penetrated, and the rotating shaft is in close contact with the inner wall of the longitudinal pipeline; The interior of the conical base at the lower end is hollow and an annular transparent net and a filter are provided at the upper opening inside. The filter includes a standpipe. The upper opening of the standpipe is opposite to the opening at the top of the cylindrical groove. The connecting piece and the valve core connected to the bottom of the cylindrical rotating shaft extend into the standpipe. A filter slot is provided at the bottom of the standpipe, and a stainless steel cylindrical filter is inserted into the filter slot.

2. A vacuum pump cooling water filter device for easy sewage discharge as claimed in claim 1, characterized in that: The bottom surface of the rotating shaft is flush with the bottom surface of the longitudinal pipeline, and the bottom of the rotating shaft is connected to the valve core outside the water flow pipeline through a connecting piece.

3. A vacuum pump cooling water filter device for easy sewage discharge as claimed in claim 1, characterized in that: A first opening is provided at the bottom of the upper end cover, and the outlet of the first pipeline matches the first opening.

4. A vacuum pump cooling water filter device for easy sewage discharge as claimed in claim 1, characterized in that: A clip bent upward and inward is provided at the bottom of the side surface of the stand pipe, and the clip and the side surface of the stand pipe form a filter slot.

5. A vacuum pump cooling water filter device for easy sewage discharge as claimed in claim 1, characterized in that: A first internal thread is provided on the top inner wall of the lower conical base, and a first external thread is provided on the bottom outer wall of the upper end cover, and the first internal thread matches the first external thread; A second external thread is provided on the outer wall of the upper middle portion of the vertical pipe, and a second internal thread is provided on the inner wall of the cylindrical groove, and the second external thread matches the second internal thread.

6. A vacuum pump cooling water filter device for easy sewage discharge as claimed in claim 5, characterized in that: A sealing ring is provided on the contact surface between the upper end cover and the lower conical base; and a sealing ring is provided on the contact surface between the cylindrical groove and the vertical pipe.

7. A vacuum pump cooling water filter device for easy sewage discharge as claimed in claim 1, characterized in that: The outer side of the annular transparent net is fixedly connected to the inner wall of the conical base at the lower end, and the inner side of the annular transparent net is fixedly connected to the outer wall of the standpipe, and the fixed connection position is below the second external thread of the outer wall of the standpipe; the connecting piece and the valve core connected to the bottom of the rotating shaft extend into the standpipe, and the lower part of the connection between the standpipe and the annular transparent net is hollow.

8. A vacuum pump cooling water filter device for easy sewage discharge as claimed in claim 1, characterized in that: A cylindrical valve fixing column protrudes from the top surface of the upper end cover, a through hole is provided inside the valve fixing column, a cylindrical valve passes through the through hole, the top end of the cylindrical valve extends out of the valve fixing column, the top surface of the rotating shaft is flush with the top surface of the longitudinal pipe, the bottom end of the cylindrical valve extends out of the through hole and is fixedly connected to the top of the rotating shaft; a valve rotating shaft is fixedly provided on the top end of the cylindrical valve.

9. A vacuum pump cooling water filter device for easy sewage discharge as claimed in claim 8, characterized in that: The valve fixing column is also covered with a hexagonal end cover, which is a hexagonal prism shell structure with an opening on one side and a hole on the other side, and the valve shaft passes through the opening on the hexagonal end cover; A third external thread is provided on the outer wall of the valve fixing column, and a third internal thread is provided on the inner wall of the hexagonal end cover, and the third external thread matches the third internal thread.

10. A vacuum pump cooling water filter device for easy sewage discharge as claimed in claim 1, characterized in that: A sewage outlet is arranged at the lower end of the lower conical base, and a sewage valve is arranged at the sewage outlet.

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