Water pump with external filter screen

Abstract

The utility model provides a water pump with an external filter screen, belongs to the technical field of water pumps, and solves the problems that the filter screen is easy to block and inconvenient to clean when being mounted in a water inlet pipe of the conventional water pump. The water pump comprises a motor and a pump body, a filter structure is mounted at a pipe orifice of a water inlet pipe of the pump body and comprises a filter screen and a mounting part, the filter screen is mounted in a mounting groove of the mounting part, a fixing block and a spring are mounted in the mounting groove, a slider is arranged on the fixing block and penetrates out of the mounting part, and a corresponding fixing groove is formed in the filter screen. A limiting rod is arranged on the filter screen, a magnet is arranged in the limiting rod, and the magnet is adsorbed in the mounting groove. The utility model has the advantages that the installation position of the filter screen is transferred from the inside of the water inlet pipe to the water inlet pipe orifice, so that workers can conveniently clean and replace the filter screen, and impurities are not easy to accumulate; meanwhile, the fixing blocks and the fixing grooves are clamped, magnets are used for adsorption, and the filter screen is convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of water pumps and relates to a water pump, in particular to a water pump with an external filter screen. Background Art

[0002] A water pump is a machine that transports liquids or increases the pressure of liquids. 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 including water, oil, acid and alkali liquids, emulsions, suspensions and liquid metals. It can also transport liquids, gas mixtures and liquids containing suspended solids.

[0003] In order to prevent impurities in the water from entering the pump body and causing wear of the impeller, a filter is usually installed in the water inlet pipe of the water pump. However, as the working time of the water pump increases, the impurities attached and accumulated on the filter also increase, resulting in a decrease in the water flow through the filter, which increases the burden on the water pump. The filter needs to be cleaned frequently, but the filter is installed in the water inlet pipe of the water pump, which is not convenient for disassembly and cleaning.

[0004] For example, a water pump with patent number CN201721231373.5 includes a pump body, in which a filter chamber is installed. The filter chamber is provided with a tapered mouth and a filter screen is installed. The tapered mouth makes the filter chamber a regular triangle, and the water flow rate spreads in the filter chamber and slows down the flow rate, which is convenient for filtering.

[0005] The above patent is convenient for filtering impurities and sediment in water, but the filter screen is arranged in the pump body, which is not convenient for cleaning and replacement and is prone to clogging. Utility Model Content

[0006] The utility model aims to solve the above problems existing in the prior art and provides a water pump in which a filter screen is installed at the water inlet of the water pump, which is convenient for disassembly and cleaning.

[0007] The utility model can be implemented through the following technical scheme: a water pump with an external filter screen, comprising a motor and a pump body, a filter structure is installed at the pipe mouth of the water inlet pipe of the pump body, the filter structure is divided into a filter screen and a mounting part, the mounting part is provided with a mounting groove corresponding to the shape of the filter screen, a mounting block is arranged in the mounting groove, a groove of the same shape is arranged on the filter screen, the filter screen is installed in the mounting groove, and a sealing gasket is installed on the outside of the filter screen.

[0008] In the above-mentioned water pump with an external filter screen, a screen frame is installed outside the filter screen, a fixing groove is opened on the screen frame, and a fixing block is installed on the installation groove.

[0009] In the above-mentioned water pump with an external filter, the fixing block is connected to the mounting portion via a spring, and the fixing block is provided with a sliding block, and the sliding block passes through the mounting portion.

[0010] In the above-mentioned water pump with an external filter screen, a positioning block is provided on the fixing block, and a positioning groove is provided on the mounting portion.

[0011] In the above-mentioned water pump with an external filter screen, a limit rod is installed on one side of the screen frame, and a magnet is installed inside the limit rod.

[0012] In the above-mentioned water pump with an external filter screen, the thickness of the filter screen is greater than the depth of the installation groove.

[0013] Compared with the prior art, the utility model has the advantages that a filter screen is arranged at the pipe opening of the water inlet pipe of the water pump, and the filter screen is detachably installed at the water inlet pipe, which is convenient for disassembly and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front view of the water pump with an external filter;

[0015] Figure 2 It is a cross-sectional view of a water pump with an external filter;

[0016] Figure 3 This is a front view of the pump body of the water pump with an external filter;

[0017] Figure 4 yes Figure 2 Enlarged view of circle A.

[0018] Figure 5 It is a three-dimensional diagram of the filter screen of a water pump with an external filter screen;

[0019] Figure 6 It is a three-dimensional diagram of the fixing block of the water pump with an external filter;

[0020] Among them, 1. motor; 2. pump body; 21. water inlet pipe; 3. filter structure; 31. filter screen; 311. screen frame; 311a. fixing groove; 312. limiting rod; 312a. magnet; 313. groove; 32. mounting part; 321. mounting groove; 321a. mounting block; 322. positioning groove; 4. sealing gasket; 5. fixing block; 51. slider; 52. positioning block; 6. spring. DETAILED DESCRIPTION

[0021] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0022] like Figures 1 to 6As shown, the utility model can be implemented through the above embodiments: a water pump with an external filter screen 31 includes a motor 1 and a pump body 2, a filter structure 3 is installed at the pipe mouth of the water inlet pipe 21 of the pump body 2, the filter structure 3 is divided into a filter screen 31 and a mounting portion 32, the mounting portion 32 is provided with a mounting groove 321 corresponding to the shape of the filter screen 31, a mounting block 321a is arranged in the mounting groove 321, a groove 313 of a corresponding shape is arranged on the filter screen 31, the filter screen 31 is installed in the mounting groove 321, and a sealing gasket 4 is installed on the outside of the filter screen 31.

[0023] A mounting portion 32 is provided at the water inlet pipe 21 of the water pump body 2, a filter screen 31 is installed in the mounting portion 32, and the sealing between the filter screen 31 and the mounting groove 321 is strengthened by the sealing gasket 4, the mounting block 321a and the groove 313 cooperate to locate the installation position of the filter screen 31, so as to facilitate the installation of the filter screen 31.

[0024] like Figure 5 As shown, a screen frame 311 is installed outside the filter screen 31, a fixing groove 311a is provided on the screen frame 311, and a fixing block 5 is installed on the mounting groove 321. The screen frame 311 is used to fix the filter screen 31, and provides a fixing groove 311a for fixing the filter screen 31, and the fixing groove 311a is connected with the fixing block 5 to limit the displacement of the filter screen 31.

[0025] like Figure 1 , Figure 2 and Figure 4 As shown, the fixing block 5 is connected to the mounting portion 32 via a spring 6, and the fixing block 5 is provided with a slider 51, which penetrates the mounting portion 32. The fixing block 5 is connected to the mounting portion 32 via the spring 6, and the spring 6 provides elastic force for the fixing block 5, so that the fixing block 5 can be inserted into the fixing groove 311a, and the slider 51 is used to manually slide the fixing block 5, so as to facilitate the removal and installation of the filter screen 31.

[0026] like Figure 2 and Figure 6 As shown, a positioning block 52 is provided on the fixing block 5, and a positioning groove 322 is provided on the mounting portion 32. The positioning block 52 cooperates with the positioning groove 322, so that the direction of the fixing block 5 remains unchanged when moving, thereby improving the efficiency of disassembling and assembling the filter screen 31.

[0027] like Figure 5 As shown, a limiting rod 312 is installed on one side of the screen frame 311, and a magnet 312a is installed in the limiting rod 312. The limiting rod 312 is used to limit the movement of the filter 31, and the magnet 312a is used to adsorb the limiting rod 312 in the installation groove 321, so that the filter 31 is as close to the installation groove 321 as possible, ensuring the stable installation of the filter 31 and the sealing of the filter 31.

[0028] like Figure 4As shown, the thickness of the filter screen 31 is greater than the depth of the installation groove 321. The thickness of the filter screen 31 is greater than the depth of the installation groove 321, so that when the water inlet pipe 21 is connected to other water pipes, the filter screen 31 can play a filtering role on other water pipes, so that impurities are accumulated on the connected water pipes, which is convenient for disassembly and cleaning of the filter structure 3.

[0029] The working principle of the utility model is as follows: pick up the filter 31, pull the slider 51, compress the spring 6, drive the fixing block 5 to be received in the installation groove 321, then insert the filter 31 into the installation groove 321 according to the limiting rod 312 and the installation block 321a, finally release the slider 51, the fixing block 5 is reset under the release of the spring 6, and the clamping of the filter 31 is completed. Remove the filter 31 and reverse the above steps.

[0030] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0031] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A water pump with an external filter screen (31), comprising a motor (1) and a pump body (2), characterized in that: A filter structure (3) is installed at the pipe mouth of the water inlet pipe (21) of the pump body (2); the filter structure (3) is divided into a filter screen (31) and a mounting portion (32); the mounting portion (32) is provided with a mounting groove (321) corresponding to the shape of the filter screen (31); a mounting block (321a) is provided in the mounting groove (321); a groove (313) of a corresponding shape is provided on the filter screen (31); the filter screen (31) is installed in the mounting groove (321); and a sealing gasket (4) is installed on the outside of the filter screen (31).

2. A water pump with an external filter (31) according to claim 1, characterized in that: A screen frame (311) is installed outside the filter screen (31), a fixing groove (311a) is provided on the screen frame (311), and a fixing block (5) is installed on the installation groove (321).

3. A water pump with an external filter (31) according to claim 2, characterized in that: The fixed block (5) is connected to the mounting portion (32) via a spring (6); the fixed block (5) is provided with a sliding block (51); and the sliding block (51) passes through the mounting portion (32).

4. A water pump with an external filter (31) according to claim 2, characterized in that: A positioning block (52) is provided on the fixing block (5), and a positioning groove (322) is provided on the mounting portion (32).

5. A water pump with an external filter (31) according to claim 2, characterized in that: A limiting rod (312) is installed on one side of the screen frame (311), and a magnet (312a) is installed in the limiting rod (312).

6. A water pump with an external filter (31) according to claim 1, characterized in that: The thickness of the filter screen (31) is greater than the depth of the installation groove (321).

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