Backflow stopping structure of water pump

Abstract

The utility model relates to the technical field of water pumps, in particular to a water pump backflow stopping structure which comprises a water pump body, a water inlet pipe and a water outlet pipe. A filtering assembly is installed in the water inlet pipe, and a backflow stopping assembly is installed in the water outlet pipe. The backflow stopping assembly comprises a water outlet and a through hole which are formed in the water outlet pipe, a fixing plate is installed in the water outlet, and the two sides of the fixing plate are welded to the inner wall of the water outlet pipe; and a return spring is installed at the bottom of the fixing plate, a fixing sliding rod is arranged in the return spring in a penetrating mode, one end of the fixing sliding rod penetrates through the interior of the fixing plate, and a check ball is fixed to the other end of the fixing sliding rod. When water flows back, the non-return plates return, the fixing plate and the two non-return plates cut off the water outlet, the pressure of the return spring is larger than the drainage pressure, the return spring acts the pressure on the non-return ball, the non-return ball abuts against the through hole, the through hole is sealed, and water flow drainage is cut off.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, specifically a water pump anti-backflow structure. Background Technology

[0002] Water pumps are used to transport or pressurize liquids. Water pumps vibrate when they are working, so modern water pumps usually have a shock-absorbing base underneath.

[0003] In the prior art, a water pump with publication number CN216199014U, designed to prevent backflow, includes a pump housing, a volute, and an impeller driven by a main shaft. The volute has an outlet pipe on its side, which connects to an anti-backflow port on the pump housing. The anti-backflow port is connected to a float pipe and an outlet inclined pipe, respectively. A float is installed inside the float pipe to control the opening and closing of the outlet inclined pipe. This invention uses a float structure as a one-way control device for the pump's outlet flow channel to prevent water backflow.

[0004] Based on the above applications, the existing water pumps still have the following problems:

[0005] A float is typically used to prevent water backflow in a water pump. However, the float can easily get stuck when it returns to its initial position, which is a problem due to the limited methods of preventing backflow. To address this, we propose a water pump backflow prevention structure. Summary of the Invention

[0006] The purpose of this invention is to provide a backflow prevention structure for a water pump to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A water pump backflow prevention structure includes:

[0009] The main body of the water pump, and the inlet pipe and outlet pipe connected to the main body of the water pump;

[0010] The inlet pipe is equipped with a filter assembly, and the outlet pipe is equipped with a backflow prevention assembly.

[0011] The backflow prevention component includes:

[0012] The outlet and through hole are opened inside the water outlet pipe. A fixing plate is installed inside the outlet, and both sides of the fixing plate are welded to the inner wall of the water outlet pipe.

[0013] A return spring is installed at the bottom of the fixed plate. A fixed slide rod passes through the inside of the return spring. One end of the fixed slide rod passes through the inside of the fixed plate, and the other end is fixed with a check ball.

[0014] Preferably, a check plate is provided on both sides of the fixing plate, one end of the check plate is movably connected to the inner wall of the water outlet pipe via a shaft, and the other end is in contact with the fixing plate.

[0015] Preferably, the fixing plate is elastically connected to the check ball via a return spring.

[0016] Preferably, the check ball contacts the through hole to seal the through hole.

[0017] Preferably, the filtering component includes:

[0018] A filter plate installed inside the water inlet pipe, the inner wall of the filter plate having a number of filter holes.

[0019] Preferably, the water inlet pipe is connected to the filter plate by a plurality of mounting screws.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] When the water flows back, the check plate will return, the fixed plate and the two check plates will cut off the outlet, and the return spring pressure is greater than the drainage pressure. The return spring will apply pressure to the check ball, which will press against the through hole to seal the through hole and cut off the water flow. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the filter assembly of this utility model;

[0024] Figure 3 This is a schematic diagram of the backflow prevention component of this utility model.

[0025] In the picture:

[0026] 1. Water pump body; 2. Inlet pipe;

[0027] 3. Filter assembly; 301. Filter plate; 302. Filter holes; 303. Mounting screw;

[0028] 4. Water outlet pipe;

[0029] 5. Backflow prevention assembly; 501. Through hole; 502. Fixing plate; 503. Check plate; 504. Return spring; 505. Fixing slide bar; 506. Check ball. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0031] Please see Figure 1-3 A water pump backflow prevention structure, comprising:

[0032] The water pump body 1, and the inlet pipe 2 and outlet pipe 4 connected to the water pump body 1;

[0033] The inlet pipe 2 is equipped with a filter assembly 3, and the outlet pipe 4 is equipped with a backflow prevention assembly 5.

[0034] like Figure 3 As shown, the backflow prevention component 5 includes:

[0035] The outlet and through hole 501 are opened inside the water outlet pipe 4. A fixing plate 502 is installed inside the water outlet. Both sides of the fixing plate 502 are welded to the inner wall of the water outlet pipe 4.

[0036] A return spring 504 is installed at the bottom of the fixed plate 502. A fixed slide rod 505 passes through the inside of the return spring 504. One end of the fixed slide rod 505 passes through the inside of the fixed plate 502, and a check ball 506 is fixed at the other end. The fixed plate 502 is elastically connected to the check ball 506 through the return spring 504. The check ball 506 contacts the through hole 501 and is used to seal the through hole 501.

[0037] In the above technical solution, during the water drainage process, when the outlet water pressure is greater than the return spring 504, the check ball 506 compresses the return spring 504, and the water flow pushes the check ball 506 open, allowing the water to be discharged through the through hole 501 and the outlet. Conversely, when the water flows back, the pressure of the return spring 504 is greater than the drainage pressure, and the return spring 504 applies pressure to the check ball 506, causing the check ball 506 to press against the through hole 501 to seal the through hole 501 and cut off the water flow.

[0038] like Figure 3 As shown, check plates 503 are provided on both sides of the fixed plate 502. One end of the check plate 503 is movably connected to the inner wall of the water outlet pipe 4 via a shaft, and the other end is in contact with the fixed plate 502.

[0039] In the above technical solution, when water flows out through the outlet, the water flow will open the check plate 503 and the water will flow out through the outlet. Conversely, when the water flows back, the check plate 503 will return, and the fixed plate 502 and the two check plates 503 will cut off the outlet. Example

[0040] Based on the above embodiment 1, a filter component 3 is further disclosed.

[0041] like Figure 2 As shown, filter component 3 includes:

[0042] A filter plate 301 is installed inside the water inlet pipe 2. The inner wall of the filter plate 301 has several filter holes 302. The water inlet pipe 2 is connected to the filter plate 301 by several mounting screws 303.

[0043] In the above technical solution, the filter plate 301 can be pushed into the water inlet pipe 2 and installed inside the water inlet pipe 2 by the mounting screw 303. The filter plate 301 provides filtration treatment for the water flow through a number of filter holes 302, reducing the impurities carried by the water flow.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A water pump check flow structure characterized by, include: The water pump body (1), and the water inlet pipe (2) and water outlet pipe (4) connected to the water pump body (1); The inlet pipe (2) is equipped with a filter assembly (3), and the outlet pipe (4) is equipped with a backflow prevention assembly (5). The backflow prevention component (5) includes: An outlet and a through hole (501) are opened inside the water outlet pipe (4). A fixing plate (502) is installed inside the water outlet. Both sides of the fixing plate (502) are welded to the inner wall of the water outlet pipe (4). A return spring (504) is installed at the bottom of the fixed plate (502). A fixed slide rod (505) is inserted inside the return spring (504). One end of the fixed slide rod (505) passes through the inside of the fixed plate (502), and the other end is fixed with a check ball (506).

2. A water pump non-return flow structure according to claim 1, wherein Check plates (503) are provided on both sides of the fixed plate (502). One end of the check plate (503) is movably connected to the inner wall of the water outlet pipe (4) via a shaft, and the other end is in contact with the fixed plate (502).

3. A water pump non-return flow structure according to claim 2, wherein The fixed plate (502) is elastically connected to the check ball (506) via a return spring (504).

4. A water pump non-return flow structure according to claim 3, wherein The check ball (506) contacts the through hole (501) to seal the through hole (501).

5. The water pump non-return flow structure according to claim 1, characterized by The filter component (3) includes: A filter plate (301) is installed inside the water inlet pipe (2), and the inner wall of the filter plate (301) is provided with a number of filter holes (302).

6. A water pump non-return flow structure according to claim 5, wherein The water inlet pipe (2) is connected to the filter plate (301) by a number of mounting screws (303).

Images