Pump inlet filter screen structure

Abstract

The utility model discloses a pump inlet filter screen structure, and relates to the technical field of fluid filtration. The device comprises a filter insertion pipe and a mounting plate, a plurality of light spherical collision components are arranged in the filter insertion pipe, a filter screen is clamped and fixed at one end in the filter insertion pipe, the mounting plate is welded and fixed at one end of the filter insertion pipe, and a water inlet pipe and a slag discharge pipe are respectively welded at two ends of one side of the mounting plate in a penetrating manner. By arranging the filter insertion pipe and the mounting plate, the problems that a pump inlet filter screen structure is often mounted on the outer side of an inlet of a pump, so that the use of the pump is possibly influenced by the environment, the joint of the pump inlet and the filter screen structure is loosened due to long-time rapid flowing of fluid, and the pump is not easy to operate when working are solved. Impurities attached to the surface of the filter screen cannot be cleaned in time generally, and the filtering efficiency is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of fluid filtering, in particular to a pump inlet filter screen structure. Background Art

[0002] A pump is a machine that transports fluids or pressurizes fluids. It transfers the mechanical energy of the prime mover or other external energy to the liquid to increase the energy of the liquid. It is mainly used to transport liquids such as water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals. It can also transport liquid-gas mixtures and liquids containing suspended solids. Before the pump is used, in order to prevent impurities in the fluid from entering the pump, causing wear on the pump and affecting the service life of the pump, it is usually necessary to set a filter structure at the inlet of the pump to filter the fluid and ensure the normal operation of the pump. However, it still has the following disadvantages in actual use:

[0003] The utility model with publication number CN210422990U discloses an industrial pump inlet filter device, wherein the right end of the pump body is provided with a pump outlet, the left end of the pump body is provided with a pump inlet, the left end of the pump inlet is provided with a cylinder, the lower part of the left end of the cylinder is provided with an interface, the lower end of the cylinder is connected with a cylinder cover by threading, the cylinder cover is connected with a support rod by threading, the upper end of the support rod is provided with a support sheet, the upper end of the cylinder is connected with a guide rod by threading, and the filter device is usually arranged outside the pump inlet, which increases the volume of the pump and may be affected by the environment during use, thereby reducing the convenience of use;

[0004] When the pump inlet filter structure filters the fluid, the pump drives the fluid to flow rapidly, which will generate greater pressure between the filter structure and the pump inlet. Long-term use may cause the connection between the filter structure and the pump inlet to loosen. When the pump is working, the fast-flowing fluid will cause impurities to adhere to the filter surface, and it is difficult to clean and collect the impurities when the pump is working, resulting in a decrease in the filtration efficiency of the filter structure. Utility Model Content

[0005] The utility model aims to provide a pump inlet filter structure, which solves the problem that the pump inlet filter structure is often installed on the outside of the pump inlet through a filtering insert tube and a mounting plate, resulting in that the use of the pump may be affected by the environment, and the long-term rapid flow of the fluid may loosen the connection between the pump inlet and the filter structure, and when the pump is working, impurities attached to the filter surface usually cannot be cleaned in time, thereby reducing the filtering efficiency.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a pump inlet filter screen structure, comprising a filter insert and a mounting plate, wherein a plurality of lightweight spherical collision components are arranged in the filter insert, a filter screen is clamped and fixed at one end of the filter insert, a mounting plate is welded and fixed at one end of the filter insert, and a water inlet pipe and a slag discharge pipe are respectively penetrated and welded at both ends of one side of the mounting plate;

[0008] When installing the filter structure and the pump inlet, the filter insert is directly plugged into the pump inlet, and the mounting plate is fitted to the mounting structure of the inlet, without occupying additional space, so as to avoid the use of the pump being affected by the environment. After the fluid enters the inner side of the filter insert, it will drive the lightweight spherical collision component to move with the fluid and collide with the surface of the filter, so that the impurities attached to the surface of the filter fall off under the action of vibration, so as to avoid a large amount of impurities adhering to the surface of the filter and causing the filtration efficiency to decrease. After the pump is used up, opening the slag discharge pipe can enable the residual liquid in the filter insert to drive the filter residue to be discharged under the action of gravity, so as to avoid excessive impurities in the filter insert affecting the next use of the pump.

[0009] Furthermore, a limiting frame is welded and fixed at one end of the filter insert, the limiting frame is attached to one side of the filter screen, and a plurality of silencer grooves are provided at the edge of one end of the filter insert;

[0010] By directly inserting the filter cannula into the inlet of the pump and making the mounting plate fit the mounting structure of the inlet to connect the filter structure and the inlet of the pump, no additional space is needed, and the use of the pump is prevented from being affected by the environment. When the fluid enters the filter cannula, the fluid flows into the pump through the filter cannula, and the filter cannula can be limited by the mounting plate to ensure the stability of the connection between the filter structure and the pump inlet. At the same time, when the bolts used for connection become loose, the movement direction of the fluid is unlikely to affect the filtering of the fluid entering the pump by the filter structure, further ensuring the stability of the use of the filter structure. The filter screen can be limited by the limiting frame to avoid deformation of the filter screen caused by fluid scouring.

[0011] Furthermore, a guide plate is welded and fixed inside the filter insert, the guide plate is attached to one side of the filter screen, and the guide plate is located between the filter screen and the mounting plate;

[0012] When the fluid enters the filter insert, it is filtered through the filter screen, so that the impurities in the fluid are retained in the filter insert, and the movement of the fluid drives the lightweight spherical collision component to move and collide with the surface of the filter screen, so that the impurities attached to the surface of the filter screen fall off under the action of vibration, thereby preventing a large amount of impurities from adhering to the surface of the filter screen and causing a decrease in filtration efficiency. After the pump is used up, the guide plate can guide the remaining fluid and filter residue, so that the filter residue can quickly enter the residue discharge pipe under the action of gravity.

[0013] Furthermore, a sealing gasket is bonded and fixed to one side of the mounting plate, a mounting hole is formed through an edge of one side of the mounting plate, the sealing gasket is located on the other side of the mounting plate relative to the water inlet pipe, and the sealing gasket is sleeved on the outer peripheral surface of the filter insert;

[0014] The sealing gasket can ensure the sealing of the connection between the filter structure and the pump, prevent the fluid from flowing out through the gap between the mounting plate and the pump inlet, and ensure the filtering efficiency.

[0015] Furthermore, a first partition net is fixedly connected to one end of the water inlet pipe, a solenoid valve is connected to the outer peripheral surface of the slag discharge pipe, a second partition net is fixedly connected to one end of the slag discharge pipe, and the second partition net is located between the mounting plate and the solenoid valve;

[0016] The first and second partition nets can ensure that fluid and impurities can smoothly enter and exit the filter insert while preventing the lightweight ball collision component from leaving the filter insert. After the pump is used, opening the solenoid valve can allow the residual liquid in the filter insert to drive the filter residue to be discharged through the residue discharge pipe under the action of gravity, thereby preventing excessive impurities in the filter insert from affecting the next use of the pump.

[0017] The utility model has the following beneficial effects:

[0018] The utility model solves the problem that the filter device is usually arranged outside the inlet of the pump, which increases the volume of the pump and may be affected by the environment when in use, thereby reducing the convenience of use by arranging a filter insert and a mounting plate. When installing and connecting between the pump and the filter structure, the filter insert is inserted into the inlet of the pump, and the mounting plate is made to fit one end of the inlet of the pump. The mounting plate and the inlet of the pump are connected and fixed by bolts, and no additional space is required, thereby preventing the use of the pump from being affected by the environment.

[0019] The utility model solves the problem that when the filter screen structure at the pump inlet filters the fluid, the pump drives the fluid to flow rapidly, which generates a large pressure between the filter screen structure and the pump inlet. Long-term use may cause the connection between the filter screen structure and the pump inlet to loosen. When the pump is working, the fluid with a faster flow rate will cause impurities to adhere to the surface of the filter screen, and it is difficult to clean and collect the impurities when the pump is working, resulting in a decrease in the filtering efficiency of the filter screen structure. When the fluid enters the filter tube, the fluid flows into the pump through the filter tube. The filter tube can be limited by the mounting plate to ensure the stability of the connection between the filter screen structure and the pump inlet. At the same time, when the bolts used for connection are loose, the moving direction of the fluid is also difficult to affect the filtering of the fluid entering the pump by the filter structure, further ensuring the stability of the use of the filter structure. The movement of the fluid drives the lightweight spherical collision component to move and collide with the surface of the filter screen, so that the impurities attached to the surface of the filter screen fall off under the action of vibration, thereby avoiding a large amount of impurities attached to the surface of the filter screen and causing a decrease in the filtering efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural effect diagram of the utility model;

[0021] Figure 2 This is a structural diagram of the filter cannula of the utility model;

[0022] Figure 3 It is a side view of the filter cannula of the utility model;

[0023] Figure 4 This is a structural diagram of the mounting plate of the utility model;

[0024] Figure 5 It is a side view of the mounting plate of the utility model.

[0025] Reference numerals:

[0026] 1. Filter insert; 101. Lightweight spherical collision assembly; 102. Silencer groove; 103. Guide plate; 104. Limiting frame; 105. Filter net; 2. Mounting plate; 201. Water inlet pipe; 202. Slag discharge pipe; 203. Solenoid valve; 204. Mounting hole; 205. Sealing pad; 206. First partition net; 207. Second partition net. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0028] See also Figure 1-5 As shown, the utility model is a pump inlet filter structure, comprising a filter insert 1 and a mounting plate 2, wherein a plurality of lightweight spherical collision components 101 are arranged in the filter insert 1, a filter screen 105 is clamped and fixed at one end of the filter insert 1, a mounting plate 2 is welded and fixed at one end of the filter insert 1, and a water inlet pipe 201 and a slag discharge pipe 202 are respectively penetrated and welded at both ends of one side of the mounting plate 2;

[0029] When installing between the filter screen structure and the pump, the filter insert 1 is inserted into the inlet of the pump, and the mounting plate 2 is fitted to one end of the inlet, and is fixed by screwing with bolts, etc., and the connecting pipe and the water inlet pipe 201 are connected, and the pump is controlled to start to suck the fluid. The fluid enters the filter insert 1 through the water inlet pipe 201 and is filtered through the filter screen 105, so that impurities are retained in the filter insert 1. The fluid enters the pump through the filter screen 105. The flow of the fluid simultaneously drives the lightweight spherical collision component 101 to move, so that the lightweight spherical collision component 101 hits the surface of the filter screen 105, and further causes the impurities attached to the surface of the filter screen 105 to fall off under the action of vibration. After the pump is used and shut down, the solenoid valve 203 is opened to allow the residual liquid in the filter insert 1 to drive the filter residue to be discharged through the residue discharge pipe 202 under the action of gravity.

[0030] Among them Figure 1-3 As shown, a limiting frame 104 is welded and fixed at one end of the filter cannula 1, and the limiting frame 104 is attached to one side of the filter screen 105. A plurality of silencer grooves 102 are provided at the edge of one end of the filter cannula 1. A guide plate 103 is welded and fixed inside the filter cannula 1, and the guide plate 103 is attached to one side of the filter screen 105. The guide plate 103 is located between the filter screen 105 and the mounting plate 2.

[0031] When installing between the filter structure and the pump, the filter insert 1 is directly inserted into the inlet of the pump, and the mounting plate 2 is fitted to one end of the inlet. The bolts are screwed through the mounting hole 204 and the mounting position of the pump inlet to connect and fix the pump inlet and the filter structure. When the fluid enters the filter insert 1, it is filtered through the filter 105, so that impurities are retained in the filter insert 1. The flow of the fluid simultaneously drives the lightweight spherical collision component 101 to move, so that the lightweight spherical collision component 101 hits the surface of the filter 105, and further the impurities attached to the surface of the filter 105 fall off under the action of vibration.

[0032] Among them Figure 1 , 4 As shown in Figures 5 and 6, a sealing gasket 205 is bonded and fixed to one side of the mounting plate 2, a mounting hole 204 is formed through the edge of one side of the mounting plate 2, the sealing gasket 205 is located on the other side of the mounting plate 2 relative to the water inlet pipe 201, the sealing gasket 205 is sleeved on the outer circumference of the filter insert 1, a first partition net 206 is fixedly connected to one end of the water inlet pipe 201, a solenoid valve 203 is connected to the outer circumference of the slag discharge pipe 202, a second partition net 207 is fixedly connected to one end of the slag discharge pipe 202, and the second partition net 207 is located between the mounting plate 2 and the solenoid valve 203;

[0033] The fluid enters the filter insert 1 through the water inlet pipe 201 and the first screen 206 for filtration, and the impurities are retained in the filter insert 1. After the pump is used up and shut down, the residual fluid mixed with the filter residue is retained in the filter insert 1. The solenoid valve 203 is opened, so that the residual fluid drives the filter residue to move along the guide plate 103 under the action of gravity and is discharged through the residue discharge pipe 202.

[0034] The specific working principle of the utility model is as follows: when installing between the filter structure and the pump, the filter insert 1 is directly plugged into the inlet of the pump, and the mounting plate 2 is fitted to one end of the inlet, and the bolts are screwed through the mounting hole 204 and the installation position of the pump inlet to connect and fix the pump inlet and the filter structure, connect the connecting pipe and the water inlet pipe 201, and control the pump to start to suck the fluid, the fluid enters the filter insert 1 through the water inlet pipe 201, and is filtered through the filter screen 105, and impurities are retained in the filter insert 1, and at the same time, the lightweight spherical collision component 101 is driven to move, so that the lightweight spherical collision component 101 hits the surface of the filter screen 105, and further the impurities attached to the surface of the filter screen 105 fall off under the action of vibration, and after the pump is used and shut down, the solenoid valve 203 is opened, so that the residual fluid drives the filter residue to move along the guide plate 103 under the action of gravity, and is discharged through the residue discharge pipe 202.

[0035] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, as well as any modification, equivalent replacement and improvement made, are within the protection scope of the present invention.

Claims

1. A pump inlet filter structure, comprising a filter insert (1) and a mounting plate (2), characterized in that: A plurality of lightweight spherical collision components (101) are arranged in the filter insert (1), a filter screen (105) is clamped and fixed at one end of the filter insert (1), a mounting plate (2) is welded and fixed at one end of the filter insert (1), and a water inlet pipe (201) and a slag discharge pipe (202) are respectively penetrated and welded at both ends of one side of the mounting plate (2).

2. A pump inlet filter structure according to claim 1, characterized in that: A limiting frame (104) is welded and fixed at one end of the filter insert (1), the limiting frame (104) is attached to one side of the filter screen (105), and a plurality of silencer grooves (102) are provided at the edge of one end of the filter insert (1).

3. A pump inlet filter structure according to claim 1, characterized in that: A guide plate (103) is welded and fixed inside the filter insert (1), the guide plate (103) is attached to one side of the filter screen (105), and the guide plate (103) is located between the filter screen (105) and the mounting plate (2).

4. A pump inlet filter structure according to claim 1, characterized in that: A sealing gasket (205) is bonded and fixed to one side of the mounting plate (2); a mounting hole (204) is provided through an edge of one side of the mounting plate (2); the sealing gasket (205) is located on the other side of the mounting plate (2) relative to the water inlet pipe (201); and the sealing gasket (205) is sleeved on the outer peripheral surface of the filter insert (1).

5. A pump inlet filter structure according to claim 1, characterized in that: A first partition net (206) is clamped and fixed at one end of the water inlet pipe (201), a solenoid valve (203) is clamped and connected through the outer peripheral surface of the slag discharge pipe (202), and a second partition net (207) is clamped and fixed at one end of the slag discharge pipe (202), and the second partition net (207) is located between the mounting plate (2) and the solenoid valve (203).

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