Check valve special for centrifugal water pump

Abstract

The utility model discloses a special check valve for a centrifugal water pump, and aims to solve the problems of large water flow resistance, unstable sealing performance, high maintenance cost and the like of a check valve in a super-power centrifugal water pump in the prior art. The check valve comprises a valve body outer pipe, a filter screen, a valve element assembly, an overturning reset assembly and a moving assembly. The valve element assembly is in sliding connection with the inner wall of the valve body outer pipe through a moving assembly and is connected with the valve body outer pipe and the overturning valve element plate through an overturning reset assembly. According to the check valve, the overturning valve core plate is overturned to a vertical state through water flow suction of the centrifugal water pump, so that the valve core is opened, water flow resistance can be reduced by overturning the vertical state of the valve core plate, and water pump efficiency is improved; when the water pump stops, the valve element plate resets under the action of the spring and makes close contact with the sealing rubber gasket, and effective non-return is achieved. The check valve has the technical effects of reducing the water flow resistance, improving the sealing performance, enhancing the durability and being easy to maintain, and is suitable for various super-power centrifugal water pumps.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump valve technical field especially relates to a centrifugal water pump special check valve. BACKGROUND

[0002] In the water pump valve technical field, especially in the application of centrifugal water pump, the check valve plays a crucial role. The main function of the check valve is to prevent water backflow caused by the gravity of water or other pressure effects when the water pump stops working, thereby protecting the water pump and the pipeline system. Traditional check valve design often has certain limitations, for example, in super-power centrifugal water pumps, the water flow is huge, and the valve core resistance of conventional check valves is large, which not only affects the water pumping efficiency of the water pump, but also may cause wear and damage of the valve.

[0003] To solve this problem, various types of check valves have appeared on the market, such as lift check valves, swing check valves, etc. However, these check valves still have some problems in actual application, such as large opening resistance, unstable sealing performance, high maintenance cost, etc. Therefore, developing a new type of centrifugal water pump special check valve to improve the working efficiency of the water pump and the service life of the valve has become a research hotspot in this field. SUMMARY

[0004] The utility model aims at providing a centrifugal water pump special check valve.

[0005] To achieve the above-mentioned purpose, the utility model is implemented according to the following technical scheme:

[0006] The centrifugal water pump special check valve of the utility model, including valve body outer tube, filter screen, valve core assembly, turnover reset assembly and moving assembly, the filter screen is connected with the water inlet end of valve body outer tube, the valve core assembly is arranged in the water inlet of valve body outer tube, the two sides of valve core assembly are slidably connected with the inner wall of valve body outer tube on both sides through moving assembly, the upper and lower ends of valve core assembly are connected with valve body outer tube and turnover valve core plate through turnover reset assembly.

[0007] Further, the valve core assembly includes a turnover valve core plate, an outer tube inner flange, and a sealing rubber gasket. The outer tube inner flange is fixedly arranged on the inner side of the inlet of the valve body outer tube. The sealing rubber gasket is arranged on the outer tube inner flange and located inside the valve body outer tube. The two sides of the turnover valve core plate are slidably connected with the inner wall of the valve body outer tube on both sides through the moving assembly. The upper and lower end faces of the turnover valve core plate are connected with the turnover reset assembly. The lower end face edge of the turnover valve core plate is located on the sealing rubber gasket.

[0008] Further, the moving assembly is two groups, two groups of the moving assembly is connected with the two sides of the valve core plate, the moving assembly includes valve core sliding rail and valve core linkage slider, the valve core sliding rail is fixedly connected with the inner wall of the valve body outer pipe, the middle of the valve core linkage slider is provided with a waist-shaped through groove, the valve core linkage slider is slidably connected with the valve core sliding rail through the waist-shaped through groove and bolts, the lower end of the valve core linkage slider is rotatably connected with the side edge of the valve core plate.

[0009] Specifically, the flip reset assembly includes a spring connecting beam, an upper connecting spring, a lower connecting spring and a limiting plate, the spring connecting beam is detachably fixedly arranged in the upper section of the valve body outer pipe, the limiting plate is fixedly arranged on the lower section of the inner wall of the valve body outer pipe, the valve core plate is located between the limiting plate and the sealing rubber washer, one end of the upper connecting spring is connected with the spring connecting beam, the other end of the upper connecting spring is connected with the upper end surface of the valve core plate, and the connection between the upper connecting spring and the valve core plate is close to the side where the limiting plate is arranged, one end of the lower connecting spring is connected with the lower end surface of the valve core plate, and the connection is located away from the side where the limiting plate is arranged, and the other end of the lower connecting spring is connected with the lower end of the filter screen.

[0010] Preferably, the upper connecting spring is two, and the two upper connecting springs are arranged side by side between the valve core plate and the spring connecting beam.

[0011] As an improvement, an upper spring adjusting bolt is arranged between the upper connecting spring and the spring connecting beam, and a lower spring adjusting bolt is arranged between the lower connecting spring and the filter screen, the upper connecting spring is connected with the spring connecting beam through the upper spring adjusting bolt, and the lower connecting spring is connected with the bottom of the filter screen through the lower spring adjusting bolt.

[0012] The utility model discloses a centrifugal water pump special check valve compares with prior art, the utility model discloses a valve core plate design makes in water flow, the valve core plate can flip to perpendicular state, the water flow resistance is reduced to the maximum limit, thereby improves the centrifugal water pump's water pumping efficiency.

[0013] The utility model discloses a centrifugal water pump special check valve compares with prior art, the utility model discloses a valve core plate design makes in water flow, the valve core plate can flip to perpendicular state, the water flow resistance is reduced to the maximum limit, thereby improves the centrifugal water pump's water pumping efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a cross-sectional structure schematic view of the utility model;

[0015] Figure 2 is a one side structure schematic view of the utility model;

[0016] Figure 3 is another side structure schematic view of the utility model;

[0017] Figure 4 is a cross-sectional structure schematic view of the utility model in the open valve state;

[0018] Figure 5 is a one side structure schematic view of the utility model in the open valve state.

[0019] In the drawing: valve body outer pipe 1, turnover valve core plate 2, valve core sliding track 3, valve core linkage sliding block 4, outer pipe inner flange 5, sealing rubber gasket 6, spring connecting crossbeam 7, upper connecting spring 8, lower connecting spring 9, upper spring adjusting bolt 10, lower spring adjusting bolt 11, limit plate 12, filter screen 13. Specific implementation

[0020] The utility model will be further described below in conjunction with the drawings and specific implementation examples, the illustrative embodiment of the utility model and the description are used to explain the utility model, but do not as the limitation of the utility model.

[0021] As Figures 1-5 Indicated: the utility model special check valve of centrifugal water pump, including valve body outer pipe 1, filter screen 13, valve core assembly, turnover reset component and moving assembly, the filter screen 13 is connected with the water inlet end of valve body outer pipe 1, the valve core assembly is set in the water inlet of valve body outer pipe 1, the two sides of valve core assembly are slidably connected with the inner wall two sides of valve body outer pipe 1 through moving assembly, the upper and lower ends of valve core assembly are connected with valve body outer pipe 1 and turnover valve core plate 2 through turnover reset component.

[0022] Further, the valve core assembly includes turnover valve core plate 2, outer pipe inner flange 5, sealing rubber gasket 6, the outer pipe inner flange 5 is fixedly set in the inner side of the inlet of valve body outer pipe 1, the sealing rubber gasket 6 is set on outer pipe inner flange 5 and is located in valve body outer pipe 1, the two sides of turnover valve core plate 2 are slidably connected with the inner wall two sides of valve body outer pipe 1 through moving assembly, the upper and lower end faces of turnover valve core plate 2 are connected with turnover reset component, the lower end face edge of turnover valve core plate 2 is located on sealing rubber gasket 6.

[0023] Further, the moving assembly is two groups, two groups of the moving assembly is connected with the two sides of the valve core plate 2 respectively, the moving assembly includes valve core sliding rail 3 and valve core linkage slider 4, the valve core sliding rail 3 is fixedly connected with the inner wall of valve body outer pipe 1, the middle of valve core linkage slider 4 is provided with a waist-shaped through slot, the valve core linkage slider 4 is slidably connected with the valve core sliding rail 3 through the waist-shaped through slot and bolt, the lower end of valve core linkage slider 4 is rotatably connected with the side edge of the valve core plate 2.

[0024] Specifically, the flip reset assembly includes spring connecting beam 7, upper connecting spring 8, lower connecting spring 9, limit plate 12, the spring connecting beam 7 is detachably fixedly arranged in the upper section in the valve body outer pipe 1, the limit plate 12 is fixedly arranged on the lower section of the inner wall of the valve body outer pipe 1, the valve core plate 2 is located between the limit plate 12 and the sealing rubber gasket 6, one end of the upper connecting spring 8 is connected with the spring connecting beam 7, the other end of the upper connecting spring 8 is connected with the upper end surface of the valve core plate 2, and the connection between the upper connecting spring 8 and the valve core plate 2 is close to the side where the limit plate 12 is arranged, one end of the lower connecting spring 9 is connected with the lower end surface of the valve core plate 2, and the connection is located away from the side where the limit plate 12 is arranged, and the other end of the lower connecting spring 9 is connected with the lower end of the filter screen 13.

[0025] Preferably, the upper connecting spring 8 is two, and the two upper connecting springs 8 are arranged side by side between the valve core plate 2 and the spring connecting beam 7.

[0026] As an improvement, the upper spring adjusting bolt 10 is arranged between the upper connecting spring 8 and the spring connecting beam 7, the lower spring adjusting bolt 11 is arranged between the lower connecting spring 9 and the filter screen 13, the upper connecting spring 8 is connected with the spring connecting beam 7 through the upper spring adjusting bolt 10, and the lower connecting spring 9 is connected with the bottom of the filter screen 13 through the lower spring adjusting bolt 11.

[0027] The implementation method of the utility model centrifugal water pump special check valve includes the following steps:

[0028] S1: the one end of valve body outer pipe 1 provided with flange is connected with the bottom end of centrifugal water pump suction pipe;

[0029] S2: after the integral component is connected with the water pipe of centrifugal pump, it is put into water, and centrifugal water pump is started;

[0030] S3: the flip valve core plate 2 is subjected to upward force by the suction force of centrifugal water pump, the flip valve core plate 2 is flipped upward under the elastic force of lower connecting spring 9 and upper connecting spring 8, and simultaneously moves upward along with the sliding of valve core linkage slider 4 in valve core sliding rail 3, so that the flip valve core plate 2 is in vertical state.

[0031] S4: the centrifugal water pump is closed, the valve core plate 2 is turned over and moves downward under the action force of the lower connecting spring 9 and the upper connecting spring 8, and is stopped by the limiting plate 12 on one side, at this time, the upper end surface of the valve core plate 2 is in close contact with the sealing rubber ring 6 under the action force of water pressure, and check is realized.

[0032] The working principle of the utility model is as follows:

[0033] The utility model discloses a valve body outer pipe 1 is connected on the water inlet pipe of centrifugal water pump, and the centrifugal water pump is usually superpower water pump, and water flow is big, and the resistance of conventional check valve core is too big, therefore, the water flow suction of centrifugal water pump makes it turn over valve core plate 2 to turn over to perpendicular state, thereby opening the valve core, and the turn over valve core plate 2 is under the action force of upper connecting spring 8 and lower connecting spring 9 and the cooperation of water flow, and the turn over valve core plate 2 slides through valve core sliding track 3 and valve core linkage sliding block 4, and the turn over valve core plate 2 is in perpendicular state in valve body outer pipe 1, and the resistance of water flow is reduced to the maximum, improves the water pumping efficiency of centrifugal water pump, reduces the energy consumption of centrifugal water pump, when check, the turn over valve core plate 2 turns over and resets under the action force of upper connecting spring 8 and lower connecting spring 9, and can slide downward through valve core linkage sliding block 4, and is in close contact with sealing rubber ring 6 under the action of water pressure, thereby preventing water flow backflow.

[0034] The technical scheme of the utility model is not limited to the limitation of the above specific embodiment, and any technical deformation according to the technical scheme of the utility model falls within the protection scope of the utility model.

Claims

1. A centrifugal water pump dedicated check valve, comprising a valve body outer pipe (1), a filter screen (13) connected with the water inlet end of the valve body outer pipe (1), characterized in that: It also includes a valve core assembly, a turnover reset assembly and a moving assembly, the valve core assembly is arranged in the water inlet of the valve body outer pipe (1), the two sides of the valve core assembly are connected with the inner wall of the valve body outer pipe (1) through the moving assembly, and the upper and lower ends of the valve core assembly are connected with the valve body outer pipe (1) and the valve core assembly through the turnover reset assembly.

2. The centrifugal water pump dedicated check valve according to claim 1, characterized in that: The valve core assembly includes a turnover valve core plate (2), an outer pipe inner flange (5) and a sealing rubber gasket (6), the outer pipe inner flange (5) is fixedly arranged on the inner side of the inlet of the valve body outer pipe (1), the sealing rubber gasket (6) is arranged on the outer pipe inner flange (5) and located in the valve body outer pipe (1), the two sides of the turnover valve core plate (2) are connected with the inner wall of the valve body outer pipe (1) through the moving assembly, the upper and lower end faces of the turnover valve core plate (2) are connected with the turnover reset assembly, and the lower end face edge of the turnover valve core plate (2) is located on the sealing rubber gasket (6).

3. The centrifugal water pump dedicated check valve according to claim 2, characterized in that: The moving assembly is two groups, the two groups of moving assemblies are connected with the two sides of the turnover valve core plate (2) respectively, the moving assembly includes a valve core sliding rail (3) and a valve core linkage sliding block (4), the valve core sliding rail (3) is fixedly connected with the inner wall of the valve body outer pipe (1), the middle of the valve core linkage sliding block (4) is provided with a waist-shaped through groove, the valve core linkage sliding block (4) is connected with the valve core sliding rail (3) through the waist-shaped through groove and bolts, and the lower end of the valve core linkage sliding block (4) is rotatably connected with the side edge of the turnover valve core plate (2).

4. The centrifugal water pump dedicated check valve according to claim 2, characterized in that: The turnover reset assembly includes a spring connecting cross beam (7), an upper connecting spring (8), a lower connecting spring (9) and a limiting plate (12), the spring connecting cross beam (7) is detachably fixedly arranged in the upper section of the valve body outer pipe (1), the limiting plate (12) is fixedly arranged on the lower section of the inner wall of the valve body outer pipe (1), the turnover valve core plate (2) is located between the limiting plate (12) and the sealing rubber gasket (6), one end of the upper connecting spring (8) is connected with the spring connecting cross beam (7), the other end of the upper connecting spring (8) is connected with the upper end face of the turnover valve core plate (2), the connection position of the upper connecting spring (8) and the turnover valve core plate (2) is close to the side where the limiting plate (12) is arranged, one end of the lower connecting spring (9) is connected with the lower end face of the turnover valve core plate (2), and the connection position is away from the side where the limiting plate (12) is arranged, and the other end of the lower connecting spring (9) is connected with the lower end of the filter screen (13).

5. The centrifugal water pump dedicated check valve according to claim 4, characterized in that: The upper connecting spring (8) is two, and the two upper connecting springs (8) are arranged side by side between the turnover valve core plate (2) and the spring connecting cross beam (7).

6. The centrifugal water pump dedicated check valve according to claim 4, characterized in that: Upper spring adjusting bolt (10) is arranged between the upper connecting spring (8) and the spring connecting crossbeam (7), lower spring adjusting bolt (11) is arranged between the lower connecting spring (9) and the filter screen (13), the upper connecting spring (8) is connected with the spring connecting crossbeam (7) through the upper spring adjusting bolt (10), and the lower connecting spring (9) is connected with the bottom of the filter screen (13) through the lower spring adjusting bolt (11).

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