Check valve special for centrifugal water pump and implementation method

Abstract

The invention discloses a check valve special for a centrifugal water pump and an implementation method, 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 invention relates to the technical field of water pump valves, and in particular to a special check valve for a centrifugal water pump and a realization method thereof. Background Art

[0002] In the field of water pump valve technology, especially in the application of centrifugal water pumps, the role of check valves is crucial. The main function of a check valve is to prevent water from flowing back due to water gravity or other pressure when the water pump stops working, thereby protecting the water pump and piping system. Traditional check valve designs often have certain limitations. For example, in ultra-high-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 pumping efficiency of the water pump, but may also cause wear and damage to the valve.

[0003] In order 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 practical applications, such as large opening resistance, unstable sealing performance, high maintenance costs, etc. Therefore, developing a new type of check valve for centrifugal water pumps 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 of the invention

[0004] The object of the present invention is to provide a special check valve for a centrifugal water pump and a realization method thereof.

[0005] To achieve the above object, the present invention is implemented according to the following technical solutions:

[0006] The special check valve for centrifugal water pumps of the present invention comprises a valve body outer tube, a filter screen, a valve core assembly, a flip reset assembly and a moving assembly, wherein the filter screen is connected to the water inlet end of the valve body outer tube, the valve core assembly is arranged in the water inlet of the valve body outer tube, the two sides of the valve core assembly are slidably connected to the two sides of the inner wall of the valve body outer tube through the moving assembly, and the upper and lower ends of the valve core assembly are connected to the valve body outer tube and the flip valve core plate through the flip reset assembly.

[0007] Furthermore, the valve core assembly includes a flip valve core plate, an inner flange of an outer tube, and a sealing rubber gasket. The inner flange of the outer tube is fixedly arranged on the inner side of the inlet of the outer tube of the valve body. The sealing rubber gasket is arranged on the inner flange of the outer tube and is located inside the outer tube of the valve body. The two sides of the flip valve core plate are slidingly connected to the two sides of the inner wall of the outer tube of the valve body through a moving assembly. The upper and lower end surfaces of the flip valve core plate are connected to the flip reset assembly, and the edge of the lower end surface of the flip valve core plate is located on the sealing rubber gasket.

[0008] Furthermore, the moving components are divided into two groups, and the two groups of moving components are respectively connected to the two sides of the flip valve core plate. The moving components include a valve core sliding track and a valve core linkage slider. The valve core sliding track is fixedly connected to the inner wall of the outer tube of the valve body. A waist-shaped through groove is provided in the middle of the valve core linkage slider. The valve core linkage slider is slidingly connected to the valve core sliding track through the waist-shaped through groove and bolts. The lower end of the valve core linkage slider is rotatably connected to the side of the flip valve core plate.

[0009] Specifically, the flip reset assembly includes a spring connecting beam, an upper connecting spring, a lower connecting spring, and a limit plate. The spring connecting beam is detachably fixed to the upper section of the outer tube of the valve body, the limit plate is fixed to the lower section of the inner wall of the outer tube of the valve body, the flip valve core plate is located between the limit plate and the sealing rubber gasket, one end of the upper connecting spring is connected to the spring connecting beam, the other end of the upper connecting spring is connected to the upper end surface of the flip valve core plate, and the connection between the upper connecting spring and the flip valve core plate is close to the side where the limit plate is set, one end of the lower connecting spring is connected to the lower end surface of the flip valve core plate, and the connection is located on the side away from the limit plate, and the other end of the lower connecting spring is connected to the lower end of the filter.

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

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

[0012] The method for realizing the special check valve for centrifugal water pump of the present invention comprises the following steps:

[0013] S1: Connect one end of the outer tube of the valve body with a flange to the bottom end of the suction pipe of the centrifugal water pump;

[0014] S2: Connect the whole component to the water pipe of the centrifugal pump and put it into water, and start the centrifugal water pump;

[0015] S3: The centrifugal water pump suction forces the flip valve core plate upward, and the flip valve core plate flips upward under the elastic forces of the lower connecting spring and the upper connecting spring, and at the same time moves upward as the valve core linkage slider slides in the valve core sliding track, so that the flip valve core plate is in a vertical state;

[0016] S4: Turn off the centrifugal water pump, and the flip valve core plate flips downward under the action of the lower connecting spring and the upper connecting spring, and moves downward at the same time until one side is blocked by the limit plate. At this time, the upper end surface of the flip valve core plate is in close contact with the sealing rubber gasket under the pressure of water to achieve non-return.

[0017] The beneficial effects of the present invention are:

[0018] The present invention is a special check valve for centrifugal water pumps and an implementation method. Compared with the prior art, the present invention uses a design of a flip valve core plate so that the valve core plate can flip to a vertical state when water flows through, thereby minimizing the resistance of the water flow and improving the pumping efficiency of the centrifugal water pump. A sealing rubber gasket is provided between the valve core plate and the outer tube of the valve body to ensure that the valve core plate can be in close contact with the sealing rubber gasket in the check state, effectively preventing the backflow of water. The design of the flip reset assembly makes the resetting of the valve core plate more stable and reliable. At the same time, the design of the detachable spring connecting crossbeam and the adjusting bolt makes the maintenance and adjustment of the valve more convenient. The check valve design is suitable for various ultra-high-power centrifugal water pumps and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a cross-sectional structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the structure of one side of the present invention;

[0021] Figure 3 It is a structural schematic diagram of another side of the present invention;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the valve opening state of the present invention;

[0023] Figure 5 It is a structural schematic diagram of one side of the valve opening state of the present invention.

[0024] In the figure: valve body outer tube 1, flip valve core plate 2, valve core sliding track 3, valve core linkage slider 4, outer tube inner flange 5, sealing rubber gasket 6, spring connecting beam 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. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0026] like Figure 1-5As shown: The special check valve for centrifugal water pumps of the present invention includes a valve body outer tube 1, a filter screen 13, a valve core assembly, a flip reset assembly and a moving assembly. The filter screen 13 is connected to the water inlet end of the valve body outer tube 1, and the valve core assembly is arranged in the water inlet of the valve body outer tube 1. The two sides of the valve core assembly are slidably connected to the two sides of the inner wall of the valve body outer tube 1 through the moving assembly, and the upper and lower ends of the valve core assembly are connected to the valve body outer tube 1 and the flip valve core plate 2 through the flip reset assembly.

[0027] Furthermore, the valve core assembly includes a flip valve core plate 2, an outer tube inner flange 5, and a sealing rubber gasket 6. The outer tube inner flange 5 is fixedly arranged on the inner side of the inlet of the valve body outer tube 1. The sealing rubber gasket 6 is arranged on the outer tube inner flange 5 and is located inside the valve body outer tube 1. The two sides of the flip valve core plate 2 are slidingly connected to the two sides of the inner wall of the valve body outer tube 1 through a moving assembly. The upper and lower end surfaces of the flip valve core plate 2 are connected to the flip reset assembly. The edge of the lower end surface of the flip valve core plate 2 is located on the sealing rubber gasket 6.

[0028] Furthermore, the movable components are divided into two groups, and the two groups of movable components are respectively connected to the two sides of the flip valve core plate 2. The movable components include a valve core sliding rail 3 and a valve core linkage slider 4. The valve core sliding rail 3 is fixedly connected to the inner wall of the valve body outer tube 1. A waist-shaped through groove is provided in the middle of the valve core linkage slider 4. The valve core linkage slider 4 is slidingly connected to the valve core sliding rail 3 through the waist-shaped through groove and bolts. The lower end of the valve core linkage slider 4 is rotatably connected to the side of the flip valve core plate 2.

[0029] Specifically, the flip reset assembly includes a spring connecting beam 7, an upper connecting spring 8, a lower connecting spring 9, and a limit plate 12. The spring connecting beam 7 is detachably fixed to the upper section of the valve body outer tube 1, and the limit plate 12 is fixed to the lower section of the inner wall of the valve body outer tube 1. The flip 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 to the spring connecting beam 7, and the other end of the upper connecting spring 8 is connected to the upper end surface of the flip valve core plate 2, and the connection between the upper connecting spring 8 and the flip valve core plate 2 is close to the side where the limit plate 12 is set. One end of the lower connecting spring 9 is connected to the lower end surface of the flip valve core plate 2, and the connection is located away from the side where the limit plate 12 is set. The other end of the lower connecting spring 9 is connected to the lower end of the filter screen 13.

[0030] Preferably, there are two upper connecting springs 8 , and the two upper connecting springs 8 are arranged side by side between the flip valve core plate 2 and the spring connecting cross beam 7 .

[0031] As an improvement, an upper spring adjusting bolt 10 is arranged between the upper connecting spring 8 and the spring connecting beam 7, and a 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 to the spring connecting beam 7 through the upper spring adjusting bolt 10, and the lower connecting spring 9 is connected to the bottom of the filter screen 13 through the lower spring adjusting bolt 11.

[0032] The method for realizing the special check valve for centrifugal water pump of the present invention comprises the following steps:

[0033] S1: Connect one end of the outer valve body tube 1 provided with a flange to the bottom end of the suction pipe of the centrifugal water pump;

[0034] S2: Connect the whole component to the water pipe of the centrifugal pump and put it into water, and start the centrifugal water pump;

[0035] S3: The centrifugal water pump suction forces the flip valve core plate 2 upwardly, and the flip valve core plate 2 flips upwardly under the elastic forces of the lower connecting spring 9 and the upper connecting spring 8, and at the same time moves upwardly with the valve core linkage slider 4 sliding in the valve core sliding track 3, so that the flip valve core plate 2 is in a vertical state;

[0036] S4: Turn off the centrifugal water pump, and the flip valve core plate 2 flips downward under the action of the lower connecting spring 9 and the upper connecting spring 8, and moves downward at the same time until one side is blocked by the limit plate 12. At this time, the upper end surface of the flip valve core plate 2 is in close contact with the sealing rubber gasket 6 under the pressure of water to achieve non-return.

[0037] The working principle of the present invention is as follows:

[0038] The present invention is connected to the water inlet pipe of the centrifugal water pump through the valve body outer tube 1. The centrifugal water pump is usually an ultra-high-power water pump with a large water flow rate. The resistance of the conventional check valve core is too large. Therefore, the water suction force of the centrifugal water pump causes the flip valve core plate 2 to flip to a vertical state, thereby opening the valve core. The flip valve core plate 2 slides through the valve core sliding track 3 and the valve core linkage slider 4 under the action of the upper connecting spring 8 and the lower connecting spring 9 and the cooperation of the water flow, so that the flip valve core plate 2 is in a vertical state in the valve body outer tube 1, which minimizes the resistance of the water flow, improves the pumping efficiency of the centrifugal water pump, and reduces the energy consumption of the centrifugal water pump. When checking, the flip valve core plate 2 flips and resets under the action of the upper connecting spring 8 and the lower connecting spring 9, and can slide downward through the valve core linkage slider 4, and cooperates with the valve core linkage slider 4 to be in close contact with the sealing rubber gasket 6 under the action of water pressure, thereby preventing water from flowing back.

[0039] The technical solution of the present invention is not limited to the above-mentioned specific embodiments. All technical variations made according to the technical solution of the present invention fall within the protection scope of the present invention.

Claims

1. A check valve for a centrifugal water pump, comprising a valve body outer tube (1) and a filter screen (13), wherein the filter screen (13) is connected to the water inlet end of the valve body outer tube (1), characterized in that: It also includes a valve core assembly, a flip reset assembly and a moving assembly, wherein the valve core assembly is arranged in the water inlet of the valve body outer tube (1), the two sides of the valve core assembly are slidably connected to the two sides of the inner wall of the valve body outer tube (1) through the moving assembly, and the upper and lower ends of the valve core assembly are connected to the valve body outer tube (1) and the flip valve core plate (2) through the flip reset assembly.

2. The special check valve for centrifugal water pump according to claim 1, characterized in that: The valve core assembly comprises a flip valve core plate (2), an outer tube inner flange (5), and a sealing rubber gasket (6); the outer tube inner flange (5) is fixedly arranged on the inner side of the inlet of the valve body outer tube (1); the sealing rubber gasket (6) is arranged on the outer tube inner flange (5) and is located in the valve body outer tube (1); the two sides of the flip valve core plate (2) are slidably connected to the two sides of the inner wall of the valve body outer tube (1) through a moving assembly; the upper and lower end surfaces of the flip valve core plate (2) are connected to the flip reset assembly; and the lower end surface edge of the flip valve core plate (2) is located on the sealing rubber gasket (6).

3. The special check valve for centrifugal water pump according to claim 2, characterized in that: The movable components are divided into two groups, and the two groups of movable components are respectively connected to the two sides of the flip valve core plate (2). The movable components include a valve core sliding track (3) and a valve core linkage slider (4). The valve core sliding track (3) is fixedly connected to the inner wall of the valve body outer tube (1). A waist-shaped through groove is arranged in the middle of the valve core linkage slider (4). The valve core linkage slider (4) is slidingly connected to the valve core sliding track (3) through the waist-shaped through groove and bolts. The lower end of the valve core linkage slider (4) is rotationally connected to the side of the flip valve core plate (2).

4. The special check valve for centrifugal water pump according to claim 2, characterized in that: The flip reset assembly comprises a spring connecting crossbeam (7), an upper connecting spring (8), a lower connecting spring (9), and a limit plate (12); the spring connecting crossbeam (7) is detachably fixedly arranged at the upper section inside the valve body outer tube (1); the limit plate (12) is fixedly arranged at the lower section of the inner wall of the valve body outer tube (1); the flip 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 to the spring connecting crossbeam (7); the other end of the upper connecting spring (8) is connected to the upper end surface of the flip valve core plate (2); and the connection between the upper connecting spring (8) and the flip valve core plate (2) is close to the side where the limit plate (12) is set; one end of the lower connecting spring (9) is connected to the lower end surface of the flip valve core plate (2); and the connection is located away from the side where the limit plate (12) is set; the other end of the lower connecting spring (9) is connected to the lower end of the filter screen (13).

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

6. The special check valve for centrifugal water pump according to claim 4, characterized in that: An upper spring adjusting bolt (10) is arranged between the upper connecting spring (8) and the spring connecting cross beam (7), and a 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 to the spring connecting cross beam (7) via the upper spring adjusting bolt (10), and the lower connecting spring (9) is connected to the bottom of the filter screen (13) via the lower spring adjusting bolt (11).

7. A method for realizing a special check valve for a centrifugal water pump as claimed in any one of claims 2 to 4, characterized in that: The following steps are involved: S1: Connect one end of the valve body outer tube (1) provided with a flange to the bottom end of the suction pipe of the centrifugal water pump; S2: Connect the whole component to the water pipe of the centrifugal pump and put it into water, and start the centrifugal water pump; S3: The centrifugal water pump's suction force causes the flip valve core plate (2) to be subjected to an upward force, and the flip valve core plate (2) flips upward under the elastic force of the lower connecting spring (9) and the upper connecting spring (8), and at the same time moves upward as the valve core linkage slider (4) slides in the valve core sliding track (3), so that the flip valve core plate (2) is in a vertical state; S4: The centrifugal water pump is turned off, and the flip valve core plate (2) flips downward under the action of the lower connecting spring (9) and the upper connecting spring (8), and moves downward at the same time until one side is blocked by the limit plate (12). At this time, the upper end surface of the flip valve core plate (2) is in close contact with the sealing rubber gasket (6) under the pressure of water, thereby achieving non-return.

Images