Check valve with flow detection function

Abstract

The utility model provides a check valve with a flow detection function. The check valve solves the problem that in the prior art, cost is high due to the fact that flow detection of a check valve and the function of the check valve are separated. The check valve comprises a valve cover, a valve body and a valve seat, the valve body is fixedly installed between the valve cover and the valve seat, a water inlet pipe and a water outlet pipe are formed on the two sides of the valve body, a check valve device is fixedly installed in the water inlet pipe, a containing cavity is formed in the check valve device, one side of the containing cavity is in a through shape, and a copper floater and magnetic steel are installed in the containing cavity. The magnetic steel is fixed to one end of the copper floater, a groove is formed in the lower end of the valve body, a containing cavity is formed in the valve seat, a switch groove is formed in the top of the containing cavity, a Hall sensor is fixedly installed in the containing cavity and comprises a Hall switch, and the Hall switch is installed in the switch groove. The utility model has the advantages of lower cost, good stability and good sealing performance.

Description

Technical Field

[0001] The utility model belongs to the technical field of check valves and relates to a check valve with a flow detection function. Background Art

[0002] A check valve refers to a valve whose closing member is a circular valve disc and which blocks the reverse flow of the medium by its own weight and the action of the medium pressure. It belongs to the category of automatic valves and is also called a non-return valve, a one-way valve, a reflux valve or an isolation valve.

[0003] Among the existing check valves on the market, the flow detection and the check valve function are designed separately. As Figure 1 shown, the flow detection and the check valve function are installed separately. A copper float 42 is fixed in the water inlet pipe 21. A magnetic steel 43 is fixedly attached to one side of the copper float 42. One end of the copper float 42 is a copper sleeve. The check valve device 4 is installed in the valve body 2. The Hall switch 51 is installed inside the valve seat 3. This structural design has a high cost. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a check valve with a flow detection function for the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: A check valve with a flow detection function includes a valve cover, a valve body and a valve seat. The valve body is fixedly installed between the valve cover and the valve seat. Water inlet pipes and water outlet pipes are formed on both sides of the valve body. A check valve device is fixedly installed inside the water inlet pipe. A receiving cavity is formed inside the check valve device. One side of the receiving cavity is in a through state and a copper float and a magnetic steel are installed in the receiving cavity. The magnetic steel is fixed to one end of the copper float. A groove is formed at the lower end of the valve body. A placement cavity is formed inside the valve seat. A switch groove is opened at the top of the placement cavity. A Hall sensor is fixedly installed in the placement cavity. The Hall sensor includes a Hall switch. The Hall switch is installed in the switch groove.

[0006] In the above check valve with a flow detection function, a bottom plate is installed at the bottom of the valve seat. A sealing groove is integrally formed on the outer periphery of the bottom plate. A rubber sealing ring is placed in the sealing groove.

[0007] In the above check valve with a flow detection function, a middle body liner is installed inside the water inlet pipe. A retaining ring is fixed to the outer end of the middle body liner.

[0008] In the above check valve with a flow detection function, the middle body liner is connected to one end of the check valve device. An O-ring is fixed at the connection between the check valve device and the middle body liner.

[0009] In the above check valve with a flow detection function, a pressure rod is fixed inside the valve body, a spring is wound around the outside of the pressure rod, and a number of pressure rod magnets are arranged at the bottom end of the pressure rod.

[0010] In the above check valve with a flow detection function, a diaphragm is fixed at the top end of the valve body, a long rod is installed below the diaphragm, a short rod is fixed above the long rod by bolts, and the short rod passes through the diaphragm.

[0011] In the above check valve with a flow detection function, the valve cover is in a conical shape, a column compression spring is installed inside the valve cover, and the bottom end of the column compression spring is sleeved on the top of the short rod.

[0012] Compared with the prior art, the check valve with a flow detection function provided by the present utility model has the following beneficial effects: 1. By installing the copper float and the magnet together with the check valve device, the flow detection and the check valve function are simultaneously realized in the water inlet pipe, saving the production cost; 2. Through the design of the O-ring seal, the sealing performance between the check valve device and the water inlet pipe is ensured. Description of the Drawings

[0013] Figure 1 is a partial cross-sectional view of a check valve in the prior art;

[0014] Figure 2 is a partial cross-sectional view of the present utility model.

[0015] In the figure: 1. Valve cover; 2. Valve body; 21. Water inlet pipe; 211. Middle body lining ring; 212. Anti-back-off ring; 22. Water outlet pipe; 23. Groove; 24. Pressure rod; 25. Spring; 26. Pressure rod magnet; 3. Valve seat; 31. Placing cavity; 32. Switch groove; 33. Bottom plate; 34. Sealing groove; 35. Sealing ring; 4. Check valve device; 41. Accommodating cavity; 42. Copper float; 43. Magnet; 5. Hall sensor; 51. Hall switch; 6. O-ring seal; 7. Diaphragm; 8. Long rod; 9. Short rod; 10. Column compression spring. Detailed Embodiments

[0016] The following are specific embodiments of the present utility model in combination with the drawings, and the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0017] Such as Figure 2As shown in the figure, this embodiment includes a valve cover 1, a valve body 2, and a valve seat 3. The valve body 2 is fixedly installed at the upper end of the valve seat 3, and the valve cover 1 is installed at the upper end of the valve body 2. On both sides of the valve body 2, a water inlet pipe 21 and a water outlet pipe 22 are formed outward. The water inlet pipe 21 penetrates inside the valve body 2, and a check valve device 4 is fixedly installed inside the water inlet pipe 21. An accommodation cavity 41 is opened inside the check valve device 4. One side of the accommodation cavity 41 is in a through shape, and a copper float 42 and a magnet 43 are installed in the accommodation cavity 41. The magnet 43 is fixed at one end of the copper float 42, and the end face of the magnet 43 contacts the copper float 43. A groove 23 is formed at the lower end of the valve body 2, and a placement cavity 31 is formed inside the valve seat 3. A switch groove 32 is opened at the top of the placement cavity 31 near the groove 23 of the valve body 2. A Hall sensor 5 is fixedly installed in the placement cavity 31. The Hall sensor 5 includes a Hall switch 51. The Hall switch 51 is installed in the switch groove 32. The Hall switch 51 and the magnet 43 are on the same axial horizontal line, making the distance between the Hall switch 51 and the magnet 43 close, which is convenient for the Hall switch 51 to detect the flow rate.

[0018] As Figure 2 shown, a diaphragm 7 is fixed at the top end of the valve body 2. A long rod 8 is installed below the diaphragm 7. A short rod 9 is fixed above the long rod 8 by a bolt. The short rod 9 penetrates through the diaphragm 7. The long rod 8, the short rod 9, and the diaphragm 7 play a role in controlling the flow or closing. The valve cover 1 is in a conical shape. A column compression spring 10 is installed vertically inside the valve cover 1. The bottom end of the column compression spring 10 is sleeved on the top of the short rod 9 for fixation.

[0019] Further details are as follows. As Figure 2 shown, a pressure rod 24 is fixed inside the valve body 2. A spring 25 is wound around the outside of the pressure rod 24. A number of pressure rod magnets 26 are arranged at the bottom end of the pressure rod 24. The pressure rod 24 plays a role in transmission.

[0020] Further details are as follows. As Figure 2 shown, a middle body lining ring 211 is installed inside the water inlet pipe 21. A retaining ring 212 is fixed at the outer end of the middle body lining ring 211. The middle body lining ring 211 is connected to one end of the check valve device 4. The middle body lining ring plays a role in reducing the wear of the check valve device 4. An O-ring 6 is fixed at the connection between the check valve device 4 and the middle body lining ring 211. The O-ring 6 plays a role in ensuring the sealing between the check valve device 4 and the water inlet pipe 21.

[0021] Further details are as follows. As Figure 2 shown, a bottom plate 33 is installed at the bottom of the valve seat 3. A sealing groove 34 is integrally formed on the outer periphery of the bottom plate 33. A rubber sealing ring 35 is placed in the sealing groove 34. During installation, the sealing ring 35 can ensure the sealing when the bottom plate 33 is connected to the valve body 2.

[0022] The working principle of the present utility model is as follows: The magnetic steel 43 on the copper float 42 cooperates with the Hall switch 51 on the Hall sensor 5. The Hall switch 51 is fixed, and the copper float 42 moves up and down according to the water flow rate, thereby driving the magnetic steel 43 to move up and down. The on-off signal of the Hall switch 51 is realized by the change in the distance between the magnetic steel 43 and the Hall switch 51. The chip on the Hall sensor 5 detects whether there is water flow according to the on-off signal of the Hall switch 51. The liquid enters the check valve from the water inlet pipe 21. When the liquid flow direction is consistent with the valve flap direction of the diaphragm 7, the diaphragm 7 will be pushed by the medium and opened to achieve the through-flow state. When the liquid flow direction is reversed, the diaphragm 7 will be quickly closed under the action of the column compression spring 10 to prevent the medium from flowing back.

[0023] The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the technical field to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

[0024] Although various terms are used more frequently herein, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present utility model; interpreting them as any additional limitation is contrary to the spirit of the present utility model.

Claims

1. A check valve with a flow detection function, comprising a valve cover (1), a valve body (2) and a valve seat (3), wherein the valve body (2) is fixedly mounted between the valve cover (1) and the valve seat (3), and characterized in that: A water inlet pipe (21) and a water outlet pipe (22) are formed on both sides of the valve body (2); a check valve device (4) is fixedly installed inside the water inlet pipe (21); a receiving chamber (41) is formed inside the check valve device (4); one side of the receiving chamber (41) is through-shaped and a copper float (42) and a magnet (43) are installed in the receiving chamber (41); the magnet (43) is fixed to one end of the copper float (42); a groove (23) is formed at the lower end of the valve body (2); a placement chamber (31) is formed inside the valve seat (3); a switch groove (32) is formed at the top of the placement chamber (31); a Hall sensor (5) is fixedly installed in the placement chamber (31); the Hall sensor (5) comprises a Hall switch (51); and the Hall switch (51) is installed in the switch groove (32).

2. A check valve with flow detection function according to claim 1, characterized in that: A bottom plate (33) is installed at the bottom of the valve seat (3), a sealing groove (34) is integrally formed on the outer circumference of the bottom plate (33), and a rubber sealing ring (35) is placed in the sealing groove (34).

3. A check valve with flow detection function according to claim 1, characterized in that: A middle body liner (211) is installed inside the water inlet pipe (21), and a stop ring (212) is fixed to the outer end of the middle body liner (211).

4. A check valve with flow detection function according to claim 3, characterized in that: The middle body liner (211) is connected to one end of the check valve device (4), and an O-type sealing ring (6) is fixed at the connection between the check valve device (4) and the middle body liner (211).

5. The check valve with flow detection function according to claim 1, characterized in that: A pressure rod (24) is fixed inside the valve body (2), a spring (25) is wound around the outside of the pressure rod (24), and a plurality of pressure rod magnets (26) are arranged at the bottom end of the pressure rod (24).

6. A check valve with flow detection function according to claim 1, characterized in that: A diaphragm (7) is fixed to the top of the valve body (2), a long rod (8) is installed below the diaphragm (7), a short rod (9) is fixed above the long rod (8) by bolts, and the short rod (9) passes through the diaphragm (7).

7. A check valve with flow detection function according to claim 1 or 6, characterized in that: The valve cover (1) is quasi-conical in shape, and a column compression spring (10) is installed inside the valve cover (1), and the bottom end of the column compression spring (10) is sleeved on the top of the short rod (9).

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