A zero-resistance bidirectional check valve

Abstract

This utility model relates to the field of check valve technology and discloses a zero-resistance bidirectional check valve, including a valve body with an outlet and an inlet. A valve disc is installed inside the valve body, and the valve disc is adapted to the inner wall of the inlet. There are two inlets, and the valve disc rotates to close different inlets. A shaft is installed on the valve disc. This utility model, by flexibly rotatably arranging the valve disc inside the valve body, allows the valve disc to rotate according to the impact of the water flow when water enters the valve body. Furthermore, due to the low friction between the valve disc and the valve body, the energy loss of the valve disc during the impact process is significantly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of check valve technology, specifically, it relates to a zero-resistance bidirectional check valve. Background Technology

[0002] In the field of water supply and drainage technology, check valves are common pipeline accessories. They are mainly used to prevent backflow of water in the main pipeline when the water pump stops working, or to prevent water from flowing back to the pumping station from parallel pipelines. Common check valves are usually installed on a single pipeline, that is, each pump's corresponding pipeline must have a set of check valves. Common check valves rely on their own weight or spring force to achieve the purpose of stopping water, such as ball check valves and lift check valves. These check valves themselves have a certain resistance, which will produce a large head loss and consume energy.

[0003] In view of this, this utility model is hereby proposed. Utility Model Content

[0004] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0005] A zero-resistance bidirectional check valve includes a valve body, which includes an outlet and an inlet. A valve disc is installed inside the valve body and is adapted to the inner wall of the inlet. There are two inlets. The valve disc rotates to close different inlets. A shaft is installed on the valve disc.

[0006] In a preferred embodiment of this utility model, a reinforcing plate is installed inside the valve disc, and a sealing ring is installed on the outside of the valve disc.

[0007] In a preferred embodiment of this utility model, the area of ​​the water outlet is larger than the area of ​​a single water inlet.

[0008] In a preferred embodiment of this utility model, a fixing sleeve is installed on the valve body, and a braking mechanism is provided on the valve body. The braking mechanism includes a braking element and a braking plate, and the braking element and the braking plate keep the valve disc in a fixed state through friction.

[0009] In a preferred embodiment of this utility model, a fixed sleeve is installed on the valve body, the shaft passes through the fixed sleeve, the shaft and the fixed sleeve are rotatably and sealingly connected, and the braking component is installed on the shaft and rotates coaxially with the shaft.

[0010] In a preferred embodiment of the present invention, the braking mechanism further includes a compression assembly, which includes a fixed frame mounted on the valve body and a support rod mounted on the fixed frame. The brake plate is movably sleeved on the support rod, and a first spring is sleeved on the support rod.

[0011] In a preferred embodiment of this utility model, a telescopic tube is sleeved on the shaft, and push rods are rotatably installed on both sides of the top of the telescopic tube. One end of the push rod is rotatably connected to the brake plate, and a second spring is sleeved on the telescopic tube.

[0012] In a preferred embodiment of this utility model, a bearing is fixedly installed on the top of the telescopic tube, a turntable is installed on the top of the bearing, a synchronous shaft is fixedly installed on the top of the shaft, a synchronous groove is provided on the turntable, and the synchronous groove cooperates with the synchronous shaft.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] This utility model flexibly rotates the valve disc inside the valve body, so that when water enters the valve body, the valve disc can rotate according to the impact of the water flow. Furthermore, due to the low friction between the valve disc and the valve body, the energy loss of the valve disc to the water head is greatly reduced during the impact process.

[0015] This invention can also provide a braking mechanism on the outside of the valve body, which fixes the valve disc by the friction between the brake plate and the brake component, and adjusts the angle of the valve disc by the turntable, thereby controlling the water intake of the two inlets.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the zero-resistance bidirectional check valve structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of a zero-resistance bidirectional check valve according to this utility model;

[0020] Figure 3 This is a schematic diagram of the valve disc structure of a zero-resistance bidirectional check valve according to this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of the zero-resistance bidirectional check valve of this utility model;

[0022] Figure 5 This is a schematic diagram of the braking mechanism in Embodiment 2 of the zero-resistance bidirectional check valve of this utility model;

[0023] Figure 6 This is a schematic diagram of the synchronous shaft structure in Embodiment 2 of the zero-resistance bidirectional check valve of this utility model;

[0024] Figure 7This is an exploded structural diagram of Embodiment 2 of the zero-resistance bidirectional check valve of this utility model.

[0025] Reference numerals in the attached diagram: 1. Valve body; 2. Outlet; 3. Inlet; 4. Valve disc; 5. Reinforcing plate; 6. Sealing ring; 7. Shaft; 8. Fixing sleeve; 9. Synchronous shaft; 10. Turntable; 11. Synchronous groove; 12. Braking component; 13. Fixing frame; 14. Support rod; 15. First spring; 16. Brake plate; 17. Push rod; 18. Telescopic tube; 19. Second spring; 20. Bearing. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0027] Example 1

[0028] like Figures 1 to 3 As shown, a zero-resistance bidirectional check valve includes a valve body 1, which includes an outlet 2 and an inlet 3. A valve disc 4 is installed inside the valve body 1, and the valve disc 4 is adapted to the inner wall of the inlet 3. There are two inlets 3. The valve disc 4 rotates to close different inlets 3. A shaft 7 is installed on the valve disc 4, and the valve disc 4 rotates flexibly inside the valve body 1 through the shaft 7, which greatly reduces the loss of water head and reduces energy loss.

[0029] like Figures 1 to 3 As shown, in a specific embodiment, a reinforcing plate 5 is installed inside the valve disc 4, and a sealing ring 6 is installed on the outside of the valve disc 4. In this configuration, the reinforcing plate 5 can increase the overall strength of the valve disc. The reinforcing plate 5 can be made of a high-strength material such as steel plate, cast iron plate, or hard plastic. The sealing rings 6 on both sides of the valve disc 4 surface can make it easier for the valve disc 4 and the sealing end face of the valve body 1 to fit and seal.

[0030] like Figures 1 to 3 As shown, the area of ​​the outlet 2 is larger than the area of ​​a single inlet 3. In this configuration, the area of ​​the outlet 2 being larger than the area of ​​a single inlet 3 can meet the speed requirement of simultaneous water intake from both the left and right inlets 3. At the same time, the area of ​​the valve disc 4 is smaller than the area of ​​the outlet 2, so that the valve disc 4 can be installed through the outlet 2 without the need to open an additional maintenance and installation port on the valve body 1, reducing the amount of processing and the risk of leakage.

[0031] The implementation principle of a zero-resistance bidirectional check valve in this embodiment is as follows: When working, if only one inlet 3 is filled with water, the water flow impacts the valve disc 4 to make it rotate and block the other inlet 3. If both inlets 3 are filled with water at the same time, the valve disc 4 is kept in the middle position under the impact of the water flow on both sides, and swings according to the magnitude of the water flow impact on both sides. Since the valve disc 4 can rotate flexibly in the valve body 1 through the shaft 7, the energy loss of the valve disc 4 is greatly reduced when it rotates.

[0032] Example 2

[0033] This embodiment provides a technical solution different from that of Embodiment 1.

[0034] like Figures 1 to 7 As shown, the valve body 1 is further provided with a braking mechanism, which includes a braking element 12 and a braking plate 16. The braking element 12 and the braking plate 16 keep the valve disc 4 in a fixed state through friction. In this configuration, the contact surfaces of the braking element 12 and the braking plate 16 are made of frosted material to generate greater friction between them.

[0035] like Figures 1 to 7 As shown, a fixed sleeve 8 is further installed on the valve body 1, and the shaft 7 passes through the fixed sleeve 8. The shaft 7 and the fixed sleeve 8 are rotatably and sealingly connected. The brake element 12 is installed on the shaft 7, and the brake element 12 rotates coaxially with the shaft 7. In this configuration, the shaft 7 is controlled by controlling the rotation of the brake element 12, thereby controlling the valve disc 4.

[0036] like Figures 1 to 7 As shown, the braking mechanism further includes a compression assembly, which includes a fixing frame 13 mounted on the valve body 1, and a support rod 14 mounted on the fixing frame 13. The brake plate 16 is movably sleeved on the support rod 14, and a first spring 15 is sleeved on the support rod 14. In this configuration, the first spring 15 is always in a compressed state, and the elastic force of the first spring 15 acts on the brake plate 16 to make it tightly adhere to the brake element 12, and the brake element 12 is fixed by the friction between the two.

[0037] like Figures 1 to 7 As shown, furthermore, a telescopic tube 18 is sleeved on the shaft 7, and push rods 17 are rotatably mounted on both sides of the top of the telescopic tube 18. One end of the push rod 17 is rotatably connected to the brake plate 16, and a second spring 19 is sleeved on the telescopic tube 18. In this configuration, the second spring 19 is always in a compressed state, and its own elastic force keeps the telescopic tube 18 in an extended state. At the same time, the elastic force of the second spring 19 acts on the brake plate 16 through the push rod 17, increasing the friction between the brake plate 16 and the brake element 12 under the synergistic effect with the first spring 15.

[0038] like Figures 1 to 7 As shown, a bearing 20 is fixedly installed on the top of the telescopic tube 18, a turntable 10 is installed on the top of the bearing 20, and a synchronous shaft 9 is fixedly installed on the top of the shaft 7. A synchronous groove 11 is provided on the turntable 10, and the synchronous groove 11 cooperates with the synchronous shaft 9. In this configuration, the turntable 10 is movably connected to the synchronous shaft 9 through the synchronous groove 11, so that the turntable 10 can slide freely on the synchronous shaft 9. When the turntable 10 rotates, the synchronous shaft 9 rotates together through the synchronous groove 11, which in turn drives the shaft 7 to rotate. When the turntable 10 rotates, the telescopic tube 18 will not rotate with it because the bearing 20 is installed between its bottom and the telescopic tube 18.

[0039] The implementation principle of a zero-resistance bidirectional check valve in this embodiment is as follows: When adjusting the valve disc 4, first press down the turntable 10. During the descent of the turntable 10, it drives the push rod 17 to move, so that the push rod 17 drives the brake plate 16 to move and disengage from the brake component 12. At this time, the brake component 12 is no longer constrained by the friction force with the brake plate 16. Rotate the turntable 10, and the turntable 10 drives the shaft 7 to rotate. The shaft 7 drives the valve disc 4 to rotate, thereby adjusting the direction of the valve disc 4. According to the requirements, the valve disc 4 can be adjusted to a suitable position so that different water inlets 3 can enter water. When the valve disc 4 is in the middle position, water can enter water from both water inlets 3. Furthermore, by adjusting the rotation angle of the valve disc 4, the water inlet volume of both water inlets 3 can be adjusted.

[0040] When the adjustment is complete, release the turntable 10. At this time, the second spring 19 drives the bearing 20 to reset. The bearing 20 pushes the turntable 10 upward. The turntable 10 drives the brake plate 16 to move and reset through the push rod 17. At the same time, the elastic force of the first spring 15 acts on the brake plate 16 to further increase the friction between the brake plate 16 and the brake element 12, so that the valve disc 4 remains fixed.

Claims

1. A zero resistance bidirectional check valve comprising a valve body (1) comprising a water outlet (2) and a water inlet (3), characterized in that, A valve disc (4) is installed inside the valve body (1). The valve disc (4) is adapted to the inner wall of the water inlet (3). There are two water inlets (3). The valve disc (4) rotates to close different water inlets (3). A shaft (7) is installed on the valve disc (4).

2. A zero resistance bidirectional check valve according to claim 1, wherein, A reinforcing plate (5) is installed inside the valve disc (4), and a sealing ring (6) is installed on the outside of the valve disc (4).

3. A zero resistance bidirectional check valve according to claim 1, wherein, The area of ​​the outlet (2) is larger than the area of ​​a single inlet (3).

4. A zero resistance bidirectional check valve according to claim 1, wherein, The valve body (1) is provided with a braking mechanism, which includes a braking element (12) and a braking plate (16). The braking element (12) and the braking plate (16) keep the valve disc (4) in a fixed state by friction.

5. A zero resistance bidirectional check valve according to claim 4, wherein, A fixed sleeve (8) is installed on the valve body (1), the shaft (7) passes through the fixed sleeve (8), the shaft (7) and the fixed sleeve (8) are rotatably sealed, the brake (12) is installed on the shaft (7), and the brake (12) and the shaft (7) rotate coaxially.

6. A zero-resistance bidirectional check valve according to claim 4, characterized in that, The braking mechanism further includes a compression assembly, which includes a fixed frame (13) mounted on the valve body (1) and a support rod (14) mounted on the fixed frame (13). The brake plate (16) is movably sleeved on the support rod (14), and a first spring (15) is sleeved on the support rod (14).

7. A zero-resistance bidirectional check valve according to claim 4, characterized in that, A telescopic tube (18) is sleeved on the shaft (7), and push rods (17) are rotatably installed on both sides of the top of the telescopic tube (18). One end of the push rod (17) is rotatably connected to the brake plate (16), and a second spring (19) is sleeved on the telescopic tube (18).

8. A zero-resistance bidirectional check valve according to claim 7, characterized in that, A bearing (20) is fixedly installed on the top of the telescopic tube (18), a turntable (10) is installed on the top of the bearing (20), a synchronous shaft (9) is fixedly installed on the top of the shaft (7), and a synchronous groove (11) is opened on the turntable (10), and the synchronous groove (11) and the synchronous shaft (9) cooperate with each other.

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