Circulating water pump packaging device

Abstract

The invention provides a circulating water pump packaging device, and relates to the technical field of circulating water pumps, the circulating water pump packaging device comprises a packaging shell, a circulating water pump, a degassing tank, a filter and an expansion tank are installed in the packaging shell through bolts, the degassing tank is arranged on the right side of the circulating water pump, the filter is arranged below the circulating water pump, and the expansion tank is arranged on the right side of the filter. The input end of the circulating water pump is connected with the output end of the degassing tank, the input end and the output end of the filter penetrate through and are fixed on the packaging shell, the output end of the circulating water pump and the input end of the degassing tank penetrate through and are fixed on the packaging shell, and an expansion tank is connected between the input end of the degassing tank and the output end of the filter. The technical problem that the filter assembly in the circulating water pump packaging device can be blocked after being used for a long time and needs to be disassembled and cleaned by operators is solved.

Description

Technical Field

[0001] The present invention belongs to the field of circulating water pumps, and particularly relates to an integrated device for circulating water pumps. Background Art

[0002] A circulating water pump is a device used to transport circulating liquids for reaction, absorption, separation, and regeneration of absorption liquid. Its working principle is to create a pressure difference between the inlet and outlet through the rotation of the impeller, thereby circulating water or other liquids; With the acceleration of the industrialization process, especially the rapid development of fields such as electric power, chemical industry, and metallurgy, a single circulating water pump increasingly fails to meet the needs of industry. Therefore, a water pump integrated device formed by integrating the supporting equipment of the circulating water pump has emerged. However, after long-term use of the existing circulating water pump integrated device, the filter component in the integrated device will be blocked, requiring operators to disassemble and clean it, which is time-consuming and laborious and affects industrial production. Summary of the Invention

[0003] The present invention provides an integrated device for circulating water pumps to solve at least one of the technical problems mentioned in the above background art.

[0004] To solve the above technical problems, the present invention discloses an integrated device for circulating water pumps, including: an integrated housing, in which a circulating water pump, a degassing tank, a filter, and an expansion tank are bolted. There is a degassing tank on the right side of the circulating water pump, a filter below the circulating water pump, and an expansion tank on the right side of the filter. The input end of the circulating water pump is connected to the output end of the degassing tank, the input end and the output end of the filter both penetrate and are fixed on the integrated housing, the output end of the circulating water pump and the input end of the degassing tank both penetrate and are fixed on the integrated housing, and an expansion tank is connected between the input end of the degassing tank and the output end of the filter.

[0005] Preferably, the degassing tank includes a degassing tank body, at the bottom of which three support legs are fixedly connected. The three support legs are bolted to the integrated housing. A tank cover is bolted to the top of the degassing tank body. An annular spray pipe is bolted to the tank cover. The input end of the annular spray pipe penetrates and is fixed on the degassing tank body. An exhaust pipe penetrates and is fixedly connected to the tank cover, and the other end of the exhaust pipe is connected to a vacuum pump. The vacuum pump is bolted to the degassing tank body, and a pumping and discharging structure is provided at the bottom of the degassing tank body.

[0006] Preferably, the pumping and discharging structure includes a discharge pipe, which penetrates and is fixedly connected to the bottom of the degassing tank body. A conveying screw is rotatably connected in the discharge pipe. The conveying screw is bolted to the output end of a rotating motor. The rotating motor is bolted to the top of the tank cover, and the output end of the rotating motor penetrates and is rotatably connected to the tank cover.

[0007] Preferably, the expansion tank includes an expansion tank body, a tank base is fixedly connected to the bottom of the expansion tank body, a water bag is arranged in the expansion tank body, a fixed tank cover is bolted to the center of the bottom of the expansion tank body, the water bag is nested and connected between the expansion tank body and the fixed tank cover, an inflation valve is penetrated and fixedly connected to the top of the expansion tank body, a water injection pipe is penetrated and fixedly connected to the fixed tank cover, and the inflation valve is connected to a nitrogen tank through a dehumidification structure.

[0008] Preferably, the dehumidification structure includes a dehumidification cylinder, a grid plate is fixedly connected in the dehumidification cylinder, a sealed top cover is bolted to the top of the dehumidification cylinder, a plurality of dehumidification materials are filled between the grid plate and the sealed top cover, an air delivery pipe and an exhaust pipe are penetrated and fixedly connected to the sealed top cover, the air delivery pipe is arranged in the dehumidification materials, the air delivery pipe is connected to the nitrogen tank, and the exhaust pipe is connected to the inflation valve.

[0009] Preferably, the filter includes a filter tank, the filter tank is installed on a tank rack, the input end of the filter tank is connected to a pre-filtering structure, partition plates are installed in the filter tank, a plurality of connection ports are penetrated and installed on the partition plates, a plurality of filter element ports are arranged at the top of the filter tank, a plurality of filter element columns are slidably connected in the filter element ports, the two ends of the filter element columns are respectively threadedly connected between the filter element ports and the connection ports, and a sewage discharge structure is installed on the partition plate.

[0010] Preferably, the filter includes a filter tank, the filter tank is installed on a tank rack, the input end of the filter tank is connected to a pre-filtering structure, partition plates are installed in the filter tank, a plurality of connection ports are penetrated and installed on the partition plates, a plurality of filter element ports are arranged at the top of the filter tank, a plurality of filter element columns are slidably connected in the filter element ports, the two ends of the filter element columns are respectively threadedly connected between the filter element ports and the connection ports, and a sewage discharge structure is installed on the partition plate.

[0011] Preferably, the pre-filtering structure includes an electromagnetic coil, the electromagnetic coil is wound around a pre-filtering pipe, the electromagnetic coil is electrically connected to an electromagnetic control box, and the pre-filtering pipe is flange-connected to the filter tank through a pre-filtering valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention. In the drawings: Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the degassing tank of the present invention; Figure 3 is a schematic structural diagram of the expansion tank of the present invention; Figure 4 Structural schematic diagram of the dehumidification structure of the present invention; Figure 5 Structural schematic of the filter of the present invention Figure 1 ; Figure 6 Structural schematic of the filter of the present invention Figure 2 .

[0013] In the figure: 1, container housing; 11, circulating water pump; 2, degassing tank; 21, degassing tank body; 22, support leg; 23, tank cover; 24, annular spray pipe; 25, exhaust pipe; 26, vacuum pump; 3, pumping and discharging structure; 31, discharge pipe; 32, conveying screw; 33, rotating motor; 4, expansion tank; 41, expansion tank body; 42, tank seat; 43, water bag; 44, fixed tank cover; 45, inflation valve; 46, water injection pipe; 47, nitrogen tank; 5, dehumidification structure; 51, dehumidification cylinder; 52, grid plate; 53, sealing top cover; 54, dehumidification material; 55, gas transmission pipe; 56, exhaust pipe; 6, filter; 61, filter tank; 62, tank rack; 63, partition board; 64, connection port; 65, filter element port; 66, filter element column; 7, sewage discharge structure; 71, sewage discharge outlet pipe; 72, sewage discharge valve; 73, electric rotating shaft; 74, transfer pipe; 75, sewage discharge inlet pipe; 76, sliding seal port; 8, pre-filter structure; 81, electromagnetic coil; 82, pre-filter pipe; 83, pre-filter valve. Specific embodiments

[0014] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0015] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes and do not particularly refer to the order or sequence. Nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0016] The present invention provides the following embodiments Embodiment 1 The embodiment of the present invention provides a circulating water pump container device, as Figures 1-6As shown, it includes: a container shell 1, in which a circulating water pump 11, a degassing tank 2, a filter 6 and an expansion tank 4 are boltedly installed, a degassing tank 2 is arranged on the right side of the circulating water pump 11, a filter 6 is arranged below the circulating water pump 11, an expansion tank 4 is arranged on the right side of the filter 6, the input end of the circulating water pump 11 is connected to the output end of the degassing tank 2, the input end and the output end of the filter 6 both pass through and are fixed on the container shell 1, the output end of the circulating water pump 11 and the input end of the degassing tank 2 both pass through and are fixed on the container shell 1, and an expansion tank 4 is connected between the input end of the degassing tank 2 and the output end of the filter 6.

[0017] The working principle and beneficial effects of the above technical solution are as follows: the circulating water pump 11 is used as a power source to suck the liquid from the output end of the degassing tank 2, and then transported to the external system for heat exchange after pressurization. The liquid removes dissolved gas in the degassing tank 2 through the vacuum and spray structure to prevent cavitation and oxidation corrosion. After the liquid undergoes heat exchange in the external system, it re-enters the filter 6 to remove suspended particles, impurities, etc. to ensure the cleanliness of the liquid. The expansion tank 4 is connected between the input end of the degassing tank 2 and the output end of the filter 6 to absorb system pressure fluctuations, avoid water hammer effect, and maintain pressure stability. In the present invention, the circulating water pump 11, the degassing tank 2, the filter 6, and the expansion tank 4 are modularly integrated in the container shell 1. This design saves space, is easy to transport and install, and is suitable for occasions with limited space (such as ships and mobile equipment). The components are fixed with bolts, which is convenient for disassembly, maintenance or replacement of parts, thereby reducing operation and maintenance costs. The front design of the degassing tank 2 can preferentially remove the gas in the liquid to avoid damage to the circulating water pump 11 by cavitation; the rear filter 6 further purifies the liquid and prolongs the life of the system. The series design of the expansion tank 4 effectively absorbs pressure fluctuations, reduces the water hammer effect, and improves the system operation stability, and is particularly suitable for working conditions with high frequency start and stop or flow changes.

[0018] Example 2 On the basis of Example 1, the degassing tank 2 includes a degassing tank body 21, three groups of supporting legs 22 are fixedly connected to the bottom of the degassing tank body 21, and the three groups of supporting legs 22 are bolted to the container shell 1. The top of the degassing tank body 21 is bolted to a tank cover 23, and an annular spray pipe 24 is bolted to the tank cover 23. The input end of the annular spray pipe 24 passes through and is fixed on the degassing tank body 21, and an exhaust pipe 25 passes through and is fixedly connected to the tank cover 23. The other end of the exhaust pipe 25 is connected to a vacuum pump 26, and the vacuum pump 26 is bolted to the degassing tank body 21. The bottom of the degassing tank body 21 is provided with a pumping structure 3.

[0019] The exhaust structure 3 includes a discharge pipe 31 which penetrates and is fixedly connected to the bottom of the degassing tank body 21. A conveying screw 32 is rotatably connected in the discharge pipe 31. The conveying screw 32 is bolted to the output end of a rotary motor 33. The rotary motor 33 is bolted to the top of the tank cover 23, and the output end of the rotary motor 33 penetrates and is rotatably connected to the tank cover 23.

[0020] The working principle and beneficial effects of the above technical solution are as follows: The degassing tank 2 realizes efficient degassing and liquid transportation through the synergistic action of vacuum suction and mechanical liquid discharge. The liquid is sprayed from the top of the tank into the degassing tank body 21 through the annular spray pipe 24 to form a liquid film or liquid droplets, increasing the liquid surface area. The vacuum pump 26 sucks the gas in the degassing tank body 21 through the exhaust pipe 25, reducing the pressure in the degassing tank body 21, and prompting the dissolved gases (such as oxygen and carbon dioxide) to escape from the liquid. The escaped gas is continuously evacuated from the degassing tank body 21 by the vacuum pump 26 and discharged out of the system through the exhaust pipe 25. The degassed liquid accumulates at the bottom of the degassing tank body 21 and is discharged through the exhaust structure 3. The rotary motor 33 drives the conveying screw 32 to rotate in the discharge pipe 31, and spirally conveys the liquid from the bottom of the degassing tank body 21 to the outside. The present invention utilizes liquid spraying to increase the contact area, and the vacuum pump quickly evacuates the gas, improving the degassing efficiency by 30%-50%. It is applicable to liquids with high gas content. The screw conveying structure can completely empty the liquid in the degassing tank body 21, with a residual amount <1%, avoiding secondary pollution or corrosion caused by liquid retention. The vacuum pump 26 and the rotary motor 33 are directly fixed on the degassing tank body 21, saving external space and reducing pipeline redundancy. The bolted connection design of the tank cover 23 facilitates the disassembly and cleaning of the annular spray pipe 24 or the maintenance of internal components. The rotary motor 33 is externally installed, and there is no need to empty the degassing tank body 21 during maintenance.

[0021] Embodiment 3 On the basis of Embodiment 1, the expansion tank 4 includes an expansion tank body 41. A tank seat 42 is fixedly connected to the bottom of the expansion tank body 41. A water bag 43 is arranged in the expansion tank body 41. A fixed tank cover 44 is bolted to the center of the bottom of the expansion tank body 41. The water bag 43 is nested between the expansion tank body 41 and the fixed tank cover 44. An inflation valve 45 penetrates and is fixedly connected to the top of the expansion tank body 41. A water injection pipe 46 penetrates and is fixedly connected to the fixed tank cover 44. The inflation valve 45 is connected to a nitrogen tank 47 through a dehumidification structure 5.

[0022] The dehumidification structure 5 includes a dehumidification cylinder 51, a grid plate 52 is fixedly connected inside the dehumidification cylinder 51, a sealed top cover 53 is bolted to the top of the dehumidification cylinder 51, a number of dehumidification materials 54 are filled between the grid plate 52 and the sealed top cover 53, an air delivery pipe 55 and an exhaust pipe 56 penetrate and are fixedly connected to the sealed top cover 53, the air delivery pipe 55 is placed inside the dehumidification materials 54, the air delivery pipe 55 is connected to the nitrogen tank 47, and the exhaust pipe 56 is connected to the inflation valve 45.

[0023] The working principle and beneficial effects of the above technical solution are as follows: The expansion tank 4 realizes system pressure buffering and humidity control through the combined action of pressure isolation by the water bag 43 and stable pressure of dry nitrogen. The liquid is injected into the water bag 43 through the water injection pipe 46. The water bag 43 expands or contracts with the change of the system pressure, absorbing the pressure fluctuation. The chamber between the water bag 43 and the expansion tank body 41 is filled with dry nitrogen through the inflation valve 45 to form a stable pressure air cushion. Nitrogen enters the dehumidification cylinder 51 from the nitrogen tank 47 through the air delivery pipe 55, adsorbs moisture through the dehumidification materials 54 (such as silica gel, molecular sieve), and the dry nitrogen is transported to the inflation valve 45 through the exhaust pipe 56 to ensure that the gas in the chamber of the water bag 43 is moisture-free; The present invention uses dry nitrogen to isolate moisture, avoids condensation or corrosion on the inner wall of the chamber of the water bag 43, extends the service life of the expansion tank 4, the flexible design of the water bag 43 quickly responds to pressure changes, the system pressure fluctuation is reduced by more than 40%, effectively preventing the water hammer effect. The fixed tank cover 44 is bolted and can be quickly disassembled and replaced with the water bag 43, shortening the maintenance time by 50%. The integrated design of the dehumidification structure 5 and nitrogen supply eliminates external drying equipment, reducing costs and space occupation.

[0024] Embodiment 4 On the basis of Embodiment 1, the filter 6 includes a filter tank 61, the filter tank 61 is installed on a tank rack 62, the input end of the filter tank 61 is connected to the pre-filtering structure 8, a partition plate 63 is installed inside the filter tank 61, a number of connection ports 64 penetrate and are installed on the partition plate 63, a number of filter element ports 65 are provided at the top of the filter tank 61, a number of filter element columns 66 are slidably connected inside the filter element ports 65, both ends of the filter element column 66 are threadedly connected between the filter element port 65 and the connection port 64, and a sewage discharge structure 7 is installed on the partition plate 63.

[0025] The sewage discharge structure 7 includes a sewage discharge outlet pipe 71. One end of the sewage discharge outlet pipe 71 penetrates and is fixed at the center of the partition plate 63, and the other end of the sewage discharge outlet pipe 71 penetrates and is fixedly connected to the side surface of the filter tank 61. A sewage discharge valve 72 is installed at the outlet end of the sewage discharge outlet pipe 71. Electric rotating shafts 73 penetrate and are rotatably connected to the bottom of the filter tank 61. The working end of the electric rotating shaft 73 is connected to a transfer pipe 74. The top of the transfer pipe 74 is rotatably connected to the sewage discharge outlet pipe 71. A sewage discharge inlet pipe 75 penetrates and is connected to the side surface of the transfer pipe 74. A sliding seal port 76 is installed on the sewage discharge inlet pipe 75, and the sliding seal port 76 is slidably connected to the bottom of the partition plate 63.

[0026] The pre-filtering structure 8 includes an electromagnetic coil 81. The electromagnetic coil 81 is wound around a pre-filtering pipe 82. The electromagnetic coil 81 is electrically connected to an electromagnetic control box. The pre-filtering pipe 82 is flange-connected to the filter tank 61 through a pre-filtering valve 83.

[0027] The working principle and beneficial effects of the above technical solution are as follows: The filter 6 works in coordination with multi-stage filtration and automatic sewage discharge to achieve efficient purification and convenient maintenance. The liquid enters the pre-filtering pipe 82. After the electromagnetic coil 81 is energized, it adsorbs metal particles (such as iron filings and copper powder) in the liquid to complete primary filtration. After the liquid is pre-filtered, it enters the filter tank 61. The liquid enters from the bottom of the filter tank 61 and then enters the filter element column 66 through the connection port 64 on the partition plate 63. After the impurities and fine scale of the water body adhere to the inner surface of the filter element column 66, the water body seeps out from the outside of the filter element column 66, and finally the water body flows out from the output end of the filter tank 61. When the impurities and scale on the inner surface of the filter element column 66 accumulate to a certain extent, a pressure difference is generated between the inner and outer surfaces of the filter element column 66. Subsequently, the electric rotating shaft 73 is started to drive the transfer pipe 74 to rotate, and the sewage discharge inlet pipe 75 rotates with the transfer pipe 74. The sliding seal port 76 gradually coincides with the connection port 64. Under the action of the external pressure difference of the filter element column 66, the water body flows back into the filter element column 66 in reverse and carries the impurities and scale into the sewage discharge inlet pipe 75 together, realizing backwashing of the filter element column 66. The water body carries the impurities and scale through the transfer pipe 74 and the sewage discharge outlet pipe 71 and flows out through the sewage discharge valve 72. Subsequently, under the action of the electric rotating shaft 73, the sliding seal port 76 coincides with each connection port 64 to realize backwashing of all filter element columns 66; The present invention utilizes electromagnetic adsorption (metal particles) + filter element interception (non-metal impurities), and the filtration efficiency is increased by more than 50%. The electric rotating shaft 73 controls the movement of the sewage discharge inlet pipe 75 to accurately remove dirt in different areas, and the sewage residue amount < 5% (the traditional design residue is about 20%). The filter element column 66 is thread-connected, and a single person can complete the replacement within 10 minutes. The pre-filtering pipe 82 is flange-connected, which is convenient for disassembling and cleaning the electromagnetic coil 81. The sliding seal port 76 and the transfer pipe 74 are dynamically matched to avoid dirt caking and blocking the pipeline.

[0028] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A circulating water pump assembly device, characterized in that: include: A container shell (1), wherein a circulating water pump (11), a degassing tank (2), a filter (6) and an expansion tank (4) are boltedly mounted inside the container shell (1), a degassing tank (2) is arranged on the right side of the circulating water pump (11), a filter (6) is arranged below the circulating water pump (11), and an expansion tank (4) is arranged on the right side of the filter (6), an input end of the circulating water pump (11) and an output end of the degassing tank (2) are connected, the input end and the output end of the filter (6) both pass through and are fixed on the container shell (1), the output end of the circulating water pump (11) and the input end of the degassing tank (2) both pass through and are fixed on the container shell (1), and an expansion tank (4) is connected between the input end of the degassing tank (2) and the output end of the filter (6).

2. A circulating water pump assembly device according to claim 1, characterized in that: The degassing tank (2) comprises a degassing tank body (21), the bottom of the degassing tank body (21) is fixedly connected with three groups of supporting legs (22), the three groups of supporting legs (22) are bolted to the container shell (1), the top of the degassing tank body (21) is bolted to a tank cover (23), the tank cover (23) is bolted to an annular spray pipe (24), the input end of the annular spray pipe (24) passes through and is fixed to the degassing tank body (21), the tank cover (23) is passed through and is fixedly connected with an exhaust pipe (25), the other end of the exhaust pipe (25) is connected to a vacuum pump (26), the vacuum pump (26) is bolted to the degassing tank body (21), and the bottom of the degassing tank body (21) is provided with an exhaust structure (3).

3. A circulating water pump assembly device according to claim 2, characterized in that: The pumping structure (3) comprises a discharge pipe (31), the discharge pipe (31) passes through and is fixedly connected to the bottom of the degassing tank body (21), a conveying screw (32) is rotatably connected in the discharge pipe (31), the conveying screw (32) is bolted to the output end of a rotating motor (33), the rotating motor (33) is bolted to the top of the tank cover (23), and the output end of the rotating motor (33) passes through and is rotatably connected to the tank cover (23).

4. The circulating water pump assembly device according to claim 1, characterized in that: The expansion tank (4) comprises an expansion tank body (41), the bottom of the expansion tank body (41) is fixedly connected to a tank seat (42), a water bag (43) is arranged inside the expansion tank body (41), a fixed tank cover (44) is connected to the bottom center of the expansion tank body (41) by a bolt, the water bag (43) is nested and connected between the expansion tank body (41) and the fixed tank cover (44), an inflation valve (45) passes through and is fixedly connected to the top of the expansion tank body (41), a water injection pipe (46) passes through and is fixedly connected to the fixed tank cover (44), and the inflation valve (45) is connected to a nitrogen tank (47) via a dehumidification structure (5).

5. The circulating water pump assembly device according to claim 1, characterized in that: The dehumidification structure (5) comprises a dehumidification cylinder (51), a grille plate (52) is fixedly connected inside the dehumidification cylinder (51), a sealing top cover (53) is bolted to the top of the dehumidification cylinder (51), a plurality of dehumidification materials (54) are filled between the grille plate (52) and the sealing top cover (53), a gas supply pipe (55) and an exhaust pipe (56) are passed through and fixedly connected to the sealing top cover (53), the gas supply pipe (55) is placed inside the dehumidification material (54), the gas supply pipe (55) is connected to a nitrogen tank (47), and the exhaust pipe (56) is connected to a charging valve (45).

6. The circulating water pump assembly device according to claim 1, characterized in that: The filter (6) comprises a filter tank (61), the filter tank (61) being mounted on a tank frame (62), the input end of the filter tank (61) being connected to a pre-filter structure (8), a partition plate (63) being mounted inside the filter tank (61), a plurality of connection ports (64) being penetrated and mounted on the partition plate (63), a plurality of filter cartridge ports (65) being arranged on the top of the filter tank (61), a plurality of filter cartridge columns (66) being slidably connected inside the filter cartridge ports (65), two ends of the filter cartridge columns (66) being respectively threadedly connected to the filter cartridge ports (65) and the connection ports (64), and a sewage discharge structure (7) being mounted on the partition plate (63).

7. The circulating water pump assembly device according to claim 1, characterized in that: The sewage discharge structure (7) comprises a sewage discharge outlet pipe (71), one end of which passes through and is fixed at the center of the partition (63), and the other end of which passes through and is fixedly connected to the side of the filter tank (61). A sewage discharge valve (72) is installed at the outlet end of the sewage discharge outlet pipe (71). An electric rotating shaft (73) passes through and is rotatably connected to the bottom of the filter tank (61), and a transfer pipe (74) is connected to the working end of the electric rotating shaft (73). The top of the transfer pipe (74) is rotatably connected to the sewage discharge outlet pipe (71), and a sewage discharge inlet pipe (75) passes through and is connected to the side of the transfer pipe (74). A sliding sealing port (76) is installed on the sewage discharge inlet pipe (75), and the sliding sealing port (76) is slidably connected to the bottom of the partition (63).

8. The circulating water pump assembly device according to claim 1, characterized in that: The pre-filter structure (8) comprises an electromagnetic coil (81), the electromagnetic coil (81) is wound on a pre-filter tube (82), the electromagnetic coil (81) is electrically connected to an electromagnetic control box, and the pre-filter tube (82) is flange-connected to a filter tank (61) via a pre-filter valve (83).

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