Centrifugal pump filtering device

Abstract

The utility model relates to the technical field of centrifugal pump filtering, and discloses a centrifugal pump filtering device which comprises a pump body, a filtering shell is fixed to the water inlet end of the pump body through a flange, a filtering structure used for filtering fluid is arranged in the filtering shell, and the filtering structure comprises a filtering element rotationally arranged in the filtering shell. And the outer circular wall surface of the filter element is attached to the inner circular wall surface of the filter shell. Due to the arrangement of the filtering structure, after the pump body is started, fluid is extracted through the circulating pipe, the fluid enters the filtering shell, is filtered by the filtering element and then enters the pump body, and the filtering surface of the filtering element is positioned at the joint of the filtering shell and the circulating pipe, so that when the filtering element is blocked, the motor is started to drive the filtering element to rotate; after the non-blocked area of the filter element rotates to the filtering position, the first valve is opened, fluid is discharged through the discharge pipe by utilizing the water pressure in the filter shell, the blocked area of the filter element is backwashed, filter holes are cleaned, and the filtering effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of centrifugal pump filtration technology, and in particular to a centrifugal pump filtration device. Background Technology

[0002] Centrifugal pumps are widely used in many industries such as power, metallurgy, building materials, chemical, and petroleum. They are used to transport various high-temperature, low-temperature, strong acid, strong alkali, strong corrosive, flammable, and explosive substances. For example, thermal power plants use centrifugal pumps for hydraulic ash removal, and metallurgical mines use centrifugal pumps for slurry transportation. In addition, centrifugal pumps can also be used in cooling systems, industrial cleaning systems, aquaculture farms, industrial equipment, and many other fields.

[0003] An existing centrifugal pump filtration device (publication number: CN222615687U) has at least the following drawbacks: Although the above device filters the water flow through a sieve plate and cleans the impurities accumulated on the sieve plate by a rotating scraper, when the scraper scrapes the impurities on the top surface of the sieve plate, it is easy to squeeze the impurities into the sieve holes of the sieve plate, causing the sieve plate to become blocked, resulting in an unsatisfactory cleaning effect of the sieve plate, and consequently, a poor filtration effect of the centrifugal pump. Therefore, we propose this utility model. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a centrifugal pump filtration device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A centrifugal pump filtration device includes a pump body. A filter shell is fixed to the water inlet end of the pump body via a flange. The filter shell has a filtration structure for filtering fluid inside. The filtration structure includes a filter element rotatably disposed inside the filter shell. The outer circular wall surface of the filter element is in contact with the inner circular wall surface of the filter shell. A treatment shell is fixedly connected to the top surface of the filter shell. A discharge pipe is fixedly connected to one side of the treatment shell. A first valve is fixedly connected to the discharge pipe. A flow pipe is fixedly connected to the outer circular wall surface of the treatment shell.

[0007] As a further embodiment of this utility model, a motor is fixed inside the filter shell, and a connecting rod is fixed to the output end of the motor. The connecting rod is fixed to one side of the inner wall of the filter element.

[0008] As a further embodiment of this utility model, a drain pipe is fixed to one side of the flow pipe, and a second valve is fixedly connected to the drain pipe.

[0009] As a further embodiment of this utility model, the bottom ends of both the discharge pipe and the sewage pipe are connected and fixedly threaded to a collection tank.

[0010] As a further embodiment of this utility model, one side of the filter shell is open, and a cover plate is threadedly connected to the open side of the filter shell, with one side of the inner wall of the cover plate abutting against one end of the filter element.

[0011] As a further embodiment of this utility model, a support is fixed to the bottom surface of the pump body.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] This air collection device, through its filtration structure, draws fluid through a flow pipe after the pump is started. The fluid enters the filter housing, is filtered by the filter element, and then enters the pump body. The filter surface of the filter element is located at the junction of the filter housing and the flow pipe. When the filter element becomes clogged, the motor is started to rotate the filter element, causing impurities on the filter surface to be initially scraped off at the interface between the filter housing and the flow pipe. After the unclogged area of ​​the filter element rotates to the filtration position, the first valve is opened, and the fluid is discharged through the discharge pipe using the water pressure inside the filter housing. This backflushing of the clogged area of ​​the filter element cleans the filter holes and improves the filtration effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a centrifugal pump filtration device proposed in this utility model;

[0015] Figure 2 This is a schematic diagram showing the disassembled structure of a centrifugal pump filtration device proposed in this utility model;

[0016] Figure 3 This is a schematic diagram of the disassembled structure of the filter shell of a centrifugal pump filtration device proposed in this utility model;

[0017] Figure 4 This is a schematic diagram of the disassembled structure of the processing shell of a centrifugal pump filtration device proposed in this utility model.

[0018] In the diagram: 1. Pump body; 2. Filter housing; 201. Filter element; 202. Processing housing; 203. Discharge pipe; 204. Flow pipe; 205. First valve; 206. Connecting rod; 207. Sewage pipe; 208. Second valve; 3. Collection tank; 4. Cover plate; 5. Support. Detailed Implementation

[0019] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] Reference Figures 1-4 A centrifugal pump filtration device includes a pump body 1. A filter shell 2 is fixed to the water inlet end of the pump body 1 via a flange. The filter shell 2 has a filtration structure for filtering fluid inside. The filtration structure includes a filter element 201 rotatably disposed inside the filter shell 2. The outer circular wall surface of the filter element 201 is in contact with the inner circular wall surface of the filter shell 2. A processing shell 202 is fixedly connected to the top surface of the filter shell 2. A discharge pipe 203 is fixedly connected to one side of the processing shell 202. A first valve 205 is fixedly connected to the discharge pipe 203. A flow pipe 204 is fixedly connected to the outer circular wall surface of the processing shell 202. The pump body 1 is a centrifugal pump.

[0023] In this embodiment, a motor is fixed inside the filter housing 2, and a connecting rod 206 is fixed to the output end of the motor. The connecting rod 206 is fixed to one side of the inner wall of the filter element 201. The motor is a waterproof motor. Through the filter structure, the pump body 1 starts to draw fluid through the flow pipe 204. The fluid enters the filter housing 2 and is filtered by the filter element 201 before entering the pump body 1. The outer wall area of ​​the filter element 201 at the junction of the filter housing 2 and the flow pipe 204 is the filter surface. When impurities accumulate on the filter surface of the filter element 201 and become blocked, the user starts the motor to drive the filter element 201 to rotate through the connecting rod 206. When the filter element 201 rotates, the impurities on its filter surface are removed by the filter housing 2 and the flow pipe 204. 4. Initial scraping of the inner wall at the interface. When the filter surface of filter element 201 rotates to the position where the processing shell 202 and filter shell 2 are connected, the non-clogged area of ​​filter element 201 rotates to the filtration position for filtration. Then, the user opens the first valve 205. Since the filter shell 2 is filled with fluid during filtration and has a certain water pressure, when the first valve 205 is opened, the fluid in the filter shell 2 and filter element 201 flows out to the discharge pipe 203. During the outflow process, under the action of water pressure, the fluid backflushes the clogged area from inside the filter element 201, thereby fully cleaning the clogged area of ​​filter element 201, preventing impurities from clogging the filter holes of filter element 201, and improving the filtration effect of the device on pump body 1.

[0024] In this embodiment, a drain pipe 207 is fixed on one side of the flow pipe 204. The drain pipe 207 is connected to a second valve 208. When the filter shell 2 and the flow pipe 204 initially scrape off the impurities on the filter surface of the filter element 201, the user can open the second valve 208 to discharge the scraped impurities through the drain pipe 207.

[0025] In this embodiment, the bottom ends of the discharge pipe 203 and the sewage pipe 207 are both connected to a collection tank 3 by a thread. When impurities are discharged through the discharge pipe 203 and the sewage pipe 207, the collection tank 3 collects the impurities to avoid environmental pollution.

[0026] In this embodiment, one side of the filter housing 2 is open, and a cover plate 4 is threadedly connected to the open side of the filter housing 2. One side of the inner wall of the cover plate 4 abuts against one end of the filter element 201. The connection between the cover plate 4 and the filter housing 2 is made by threaded connection of Teflon tape to improve the sealing performance. When the user needs to repair the filter element 201, he / she can open the cover plate 4 for repair.

[0027] In this embodiment, a support 5 is fixed to the bottom surface of the pump body 1, and the pump body 1 is supported and fixed by the support 5.

[0028] Working Principle: During operation, pump 1 starts and draws fluid through flow pipe 204. The fluid enters filter housing 2 and is filtered by filter element 201 before entering pump 1. The outer wall area of ​​filter element 201 at the junction of filter housing 2 and flow pipe 204 serves as the filter surface. When impurities accumulate and clog the filter surface of filter element 201, the user starts the motor, which drives filter element 201 to rotate via connecting rod 206. As filter element 201 rotates, impurities on its filter surface are initially scraped off by the inner wall at the interface between filter housing 2 and flow pipe 204. When the filter surface of filter element 201 rotates to the position where processing housing 202 and filter housing 2 are connected, the unclogged area of ​​filter element 201 rotates to the filtration position for filtration. Afterward, the user opens the first valve 205. Because filter housing 2 is filled with fluid during filtration, it has a certain water pressure. When the first valve 205 is opened, the fluid in the filter shell 2 and filter element 201 flows out to the discharge pipe 203. During the outflow process, under the action of water pressure, the fluid backwashes the blockage area from inside the filter element 201, thereby fully cleaning the blockage area of ​​the filter element 201 and preventing impurities from clogging the filter holes of the filter element 201. When the filter shell 2 and the flow pipe 204 initially scrape off the impurities on the filter surface of the filter element 201, the user can open the second valve 208 to discharge the scraped impurities through the drain pipe 207. When the impurities are discharged through the discharge pipe 203 and the drain pipe 207, the collection tank 3 collects the impurities to avoid environmental pollution. When the user needs to repair the filter element 201, the cover plate 4 can be opened for repair, and the pump body 1 is supported and fixed by the support 5.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A centrifugal pump filtration device, comprising a pump body (1), characterized in that: The pump body (1) has a filter shell (2) fixed to the water inlet end via a flange. The filter shell (2) has a filter structure for filtering the fluid inside. The filter structure includes a filter element (201) rotatably disposed inside the filter shell (2). The outer circular wall of the filter element (201) is in contact with the inner circular wall of the filter shell (2). The top surface of the filter shell (2) is connected to and fixed with a processing shell (202). One side of the processing shell (202) is connected to and fixed with a discharge pipe (203). The discharge pipe (203) is connected to and fixed with a first valve (205). The outer circular wall of the processing shell (202) is connected to and fixed with a flow pipe (204).

2. The centrifugal pump filtration device according to claim 1, characterized in that, A motor is fixed inside the filter housing (2), and a connecting rod (206) is fixed at the output end of the motor. The connecting rod (206) is fixed to one side of the inner wall of the filter element (201).

3. A centrifugal pump filtration device according to claim 2, characterized in that, A drain pipe (207) is fixed to one side of the flow pipe (204), and a second valve (208) is fixedly connected to the drain pipe (207).

4. A centrifugal pump filtration device according to claim 3, characterized in that, The bottom ends of the discharge pipe (203) and the sewage pipe (207) are both connected to a collection tank (3) by a thread.

5. A centrifugal pump filtration device according to claim 4, characterized in that, One side of the filter shell (2) is open, and a cover plate (4) is threadedly connected to the open side of the filter shell (2). One side of the inner wall of the cover plate (4) abuts against one end of the filter element (201).

6. A centrifugal pump filtration device according to claim 5, characterized in that, The bottom surface of the pump body (1) is fixed with a support (5).

Images