Floating ball valve

Abstract

The utility model discloses a floating ball valve, which relates to the technical field of ball valves, and comprises a valve body and a valve seat arranged in the valve body, and further comprises a valve core, a valve clack, a rocker and a floating ball, the valve core and the valve clack are arranged in the valve body, one end of the valve clack is connected with the valve core, the surface of the other end of the valve clack is a spherical surface, one end of the rocker is hinged with the valve core and the valve body, and the other end of the rocker is hinged with the valve body. A floating ball is arranged at the other end of the rocker. The surface of the other end of the valve element is arranged to be the spherical surface, linear sealing is achieved between the valve element and the valve seat, and the good sealing effect is achieved. Compared with a plane sealing structure, the spherical surface design has the advantages that the resistance of water is reduced, the opening stroke is the same, the circulation amount is increased by more than 50%, one end of the rocker is arranged to be in a bent shape, the cylindrical pin and the pin shaft are arranged in a matched mode, and the valve element is opened with the pin shaft as a rotating point through the gravity of the floating ball and the rocker. And when the valve is closed, the floating ball is positioned at a higher position.

Description

Technical Field

[0001] This utility model relates to the field of automatic valve technology, and in particular to a float valve. Background Technology

[0002] Due to their excellent sealing performance, float valves are widely used and play an important role in many water level control structures.

[0003] The float valve in the prior art includes a valve body, a valve core and a valve seat disposed in the valve body, a straight rocker arm connected to the valve core and a float connected to the straight rocker arm. The float drives the straight rocker arm to rotate, so that the straight rocker arm drives the valve core to contact or separate from the valve seat, thereby realizing the closing or opening of the float valve.

[0004] However, existing float valves have the following technical defects: 1. The valve core sealing structure is a planar seal, and the small opening stroke results in large water resistance and small flow; 2. The existing rocker uses a straight rocker, and when the float valve is closed, the float will be in a low position, resulting in a low liquid level. Utility Model Content

[0005] The purpose of this invention is to provide a float valve to solve the above-mentioned technical problems.

[0006] The technical solution adopted in this utility model is as follows:

[0007] A float valve includes a valve body and a valve seat disposed within the valve body, and further includes a valve core, a valve disc, a rocker arm, and a float. The valve core and the valve disc are disposed within the valve body, one end of the valve disc is connected to the valve core, and the other end of the valve disc has a spherical surface. One end of the rocker arm is hinged to the valve core and the valve body, and the other end of the rocker arm is provided with the float.

[0008] Preferably, a line seal is formed between the sealing surface of the valve seat and the valve disc, and the valve seat is threadedly connected to the valve body.

[0009] Preferably, one end of the valve disc has an inclined outer surface that forms an inverted structure, and one end of the valve disc is installed inside the valve core through the inverted structure.

[0010] Preferably, the valve disc is hollow inside.

[0011] Preferably, the device also includes a connector, wherein one end of the rocker arm is bent and the other end of the rocker arm is connected to the float via the connector.

[0012] As a further preferred embodiment, the rocker arm also includes a pin and a cylindrical pin. One end of the rocker arm is connected to the valve body via the pin. One end of the rocker arm has an oblong hole, and the cylindrical pin is disposed in the oblong hole. The rocker arm is connected to the valve core via the cylindrical pin.

[0013] Preferably, a sealing ring is also included. An installation groove is provided on the inner wall of the valve body, and the sealing ring is disposed in the installation groove. The sealing ring is located between the valve body and the valve core.

[0014] Preferably, an external thread is provided on the outer wall of one end of the valve body, and an internal thread is provided on the inner wall of one end of the valve body.

[0015] Preferably, the valve body also includes an external connector, which is provided at the lower end of the valve body and communicates with the interior of the valve body. The external connector has threads on its outer wall and / or inner wall.

[0016] As a further preferred embodiment, the other end of the rocker arm is provided with a plurality of slots along its length, and the connector is detachably installed in one of the slots.

[0017] The above technical solution has the following advantages or beneficial effects:

[0018] (1) In this utility model, the other end surface of the valve core is set as a spherical surface to achieve a line seal with the valve seat, thus achieving a good sealing effect; and the spherical surface design reduces water resistance compared with the planar sealing structure, and the flow rate increases by more than 50% for the same opening stroke.

[0019] (2) In this utility model, one end of the rocker arm is set to be bent, and with the setting of cylindrical pin and pin shaft, the valve body and valve core are connected together to form a transmission mechanism. The valve core is opened by using the gravity of the float and the rocker arm with the pin shaft as the rotation point. The rocker arm is designed by combining parameters such as torque, gravity, and float buoyancy. Compared with the existing straight rocker arm, the rocker arm opening angle is small and the valve opening is large. When closed, the float is in a higher position.

[0020] (3) In this utility model, one end of the valve disc is provided with an inverted structure and an internal hollow structure, which is elastically and tightly connected with the valve core to prevent it from falling off. The internal hollow structure reduces the weight of the valve disc and pushes the valve core to close with the smallest float and buoyancy. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the float valve in this utility model.

[0022] In the diagram: 1. Valve body; 2. Valve core; 3. Valve disc; 4. Rocker arm; 5. Float ball; 6. Inverted structure; 7. Pin; 8. Cylindrical pin; 9. Waist-shaped hole; 10. Sealing ring; 11. External pipe; 12. Connecting rod; 13. Wing bolt; 14. Hex nut; 15. Slot. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Figure 1 This is a structural schematic diagram of the float valve in this utility model. Please refer to it. Figure 1 The diagram illustrates a preferred embodiment of a float valve, comprising a valve body 1 and a valve seat disposed within the valve body 1, and further including a valve core 2, a valve disc 3, a rocker arm 4, and a float 5. The valve core 2 and valve disc 3 are disposed within the valve body 1. One end of the valve disc 3 is connected to the valve core 2, and the other end of the valve disc 3 has a spherical surface. One end of the rocker arm 4 is hinged to the valve core 2 and the valve body 1, and the other end of the rocker arm 4 is provided with the float 5. In this embodiment, see [reference needed]. Figure 1As shown, the valve body 1 has open ends. One end of the valve body 1 has an external thread on its outer wall and an internal thread on its inner wall. The presence of two types of threads at one end of the valve body 1 allows for connection to two different sized pipes, making the product more versatile. The other end of the valve disc 3 has a spherical surface, which forms a line seal with the sealing surface of the valve seat, achieving a good sealing effect. Furthermore, the spherical design of the valve disc 3 reduces water resistance compared to a planar seal structure, increasing the flow rate by more than 50% for the same opening stroke.

[0027] In this embodiment, the valve seat and valve body are connected by threads. This allows for easy replacement of the valve seat if foreign objects cause damage to the valve seat sealing surface during use. Compared to the integrated sealing surface structure of the valve body, this design offers greater versatility.

[0028] In this embodiment, the float valve is a stainless steel float valve.

[0029] Furthermore, as a preferred embodiment, one end of the valve disc 3 has an inclined outer surface forming an inverted snap structure 6, and one end of the valve disc 3 is installed inside the valve core 2 through the inverted snap structure 6. See also Figure 1 As shown, one end of the valve disc 3 forms an inverted buckle structure 6, which allows it to be directly installed inside the valve core 2 and to fit tightly and elastically with the valve core 2 to prevent it from falling off.

[0030] Furthermore, as a preferred embodiment, the valve disc 3 is hollow inside. In this embodiment, the valve disc 3 is made entirely of an elastic material and is hollow inside. See [link to previous embodiment]. Figure 1 As shown, when one end of the valve disc 3 enters the valve core 2, the inner wall of the valve core 2 can squeeze the valve disc 3, causing one end of the valve disc 3 to deform and enter the valve core 2, thus preventing the valve disc 3 from falling off.

[0031] Furthermore, as a preferred embodiment, a connector is also included. One end of the rocker arm 4 is bent, and the other end of the rocker arm 4 is connected to the float 5 via the connector. Several slots 15 are formed along the length of the other end of the rocker arm 4, and the connector is detachably installed in one of the slots 15, thereby adjusting the position of the float 5 relative to the rocker arm 4 and changing the torque of the rocker arm 4. With the same design parameters such as gravity and buoyancy of the float 5, different water supply pressures can be adjusted by regulating the torque of the rocker arm 4, balancing the closing force of the valve core 2 and the elastic deformation of the valve disc 3, thus extending the service life of the valve disc 3. This function cannot be achieved with a straight rocker arm connected to the float structure.

[0032] The connector includes a connecting rod 12, a wing bolt 13, and a hexagonal nut 14. The connecting rod 12 is hollow and has internal threads. The connecting rod 12 is detachably connected to the slot 15 on the rocker arm 4. The connecting rod 12 is locked in the slot 15. The hexagonal nut 14 is mounted on the float 5. The wing bolt 13 passes through the connecting rod 12 and is connected to the hexagonal nut. The wing bolt 13 and the connecting rod 12 are threaded together.

[0033] In this embodiment, a transmission mechanism is formed between the rocker arm 4, the connecting piece, the valve body 1, and the valve core 2. The valve core 2 is opened by utilizing the gravity of the float 5 and the rocker arm 4 with the pin 7 as the rotation point. The structural design of the rocker arm 4 is designed in combination with parameters such as torque, gravity, and buoyancy of the float 5. Compared with the straight rocker arm 4 in the prior art, the rocker arm 4 has a smaller opening angle and a larger valve opening. When closed, the float 5 is in a higher position.

[0034] Furthermore, as a preferred embodiment, it also includes a pin 7 and a cylindrical pin 8. One end of the rocker arm 4 is connected to the valve body 1 via the pin 7. One end of the rocker arm 4 has an oblong hole 9, and the cylindrical pin 8 is disposed within the oblong hole 9. The rocker arm 4 is connected to the valve core 2 via the cylindrical pin 8. See also Figure 1 As shown, the rocker arm 4 is connected to the valve body 1 via a pin 7. The rocker arm 4 can rotate around the pin 7 as a fulcrum, while the cylindrical pin 8 is located in the oblong hole 9 and can slide within the oblong hole 9. When the rocker arm 4 is rotated, one end of the rocker arm 4 can drive the valve core 2 to move axially within the valve body 1, thereby causing the valve disc 3 to contact or move away from the valve body 1, thus realizing the closing or opening of the float valve.

[0035] Furthermore, as a preferred embodiment, a sealing ring 10 is also included. An installation groove is provided on the inner wall of the valve body 1, and the sealing ring 10 is disposed within the installation groove, located between the valve body 1 and the valve core 2. The sealing ring 10 guides the valve core 2, corrects the sealing axis of the valve core 2, and provides a sealing function to prevent fluid leakage.

[0036] Furthermore, as a preferred embodiment, it also includes an external connecting pipe 11. The lower end of the valve body 1 is provided with an external connecting pipe 11, which communicates with the interior of the valve body 1. The outer wall and / or inner wall of the external connecting pipe 11 are threaded, allowing for the installation and connection of a drain pipe to the water surface, preventing excessive water splashing during drainage from affecting the oscillation of the float 5. In this embodiment, the inner or outer wall of the external connecting pipe 11 may be threaded, or both the inner and outer walls of the external connecting pipe 11 may be threaded; the specific choice can be made according to needs.

[0037] When in use, float 5 floats on the water surface. When the liquid level rises, float 5 rises, which will cause the rocker lever 4 to press. Figure 1When the rocker arm 4 rotates counterclockwise in the indicated direction, it will rotate around the pin 7 as the fulcrum and push the valve core 2 to move the valve disc 3 closer to the valve seat inside the valve body 1, so that the valve disc 3 contacts the valve seat and closes the float valve. When the liquid level drops, the float 5 will drive the rocker arm 4 to rotate clockwise. At this time, the valve stem will drive the valve core 2 and the valve disc 3 to move away from the valve seat, so that the valve disc 3 separates from the valve seat and opens the float valve.

[0038] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A float valve, comprising a valve body and a valve seat disposed within the valve body, characterized in that, It also includes a valve core, a valve disc, a rocker arm, and a float. The valve core and the valve disc are disposed in the valve body. One end of the valve disc is connected to the valve core, and the other end of the valve disc has a spherical surface. One end of the rocker arm is hinged to the valve core and the valve body, and the other end of the rocker arm is provided with the float.

2. The float valve as described in claim 1, characterized in that, The sealing surface of the valve seat forms a line seal with the valve disc, and the valve seat is threadedly connected to the valve body.

3. The float valve as described in claim 1, characterized in that, The outer surface of one end of the valve disc is inclined and forms an inverted structure. One end of the valve disc is installed in the valve core through the inverted structure.

4. The float valve as described in claim 1, characterized in that, The valve disc is hollow inside.

5. The float valve as described in claim 1, characterized in that, It also includes a connector, one end of which is bent and the other end of which is connected to the float via the connector.

6. The float valve as described in claim 5, characterized in that, It also includes a pin and a cylindrical pin. One end of the rocker arm is connected to the valve body through the pin. One end of the rocker arm has an oblong hole, and the cylindrical pin is located in the oblong hole. The rocker arm is connected to the valve core through the cylindrical pin.

7. The float valve as described in claim 1, characterized in that, It also includes a sealing ring, and an installation groove is provided on the inner wall of the valve body. The sealing ring is located in the installation groove and is located between the valve body and the valve core.

8. The float valve as described in claim 1, characterized in that, The valve body has an external thread on one end of its outer wall and an internal thread on one end of its inner wall.

9. The float valve as described in claim 1, characterized in that, It also includes an external pipe, which is provided at the lower end of the valve body. The external pipe is connected to the interior of the valve body, and the outer wall and / or inner wall of the external pipe are provided with threads.

10. The float valve as described in claim 5, characterized in that, The other end of the rocker arm has several slots along its length, and the connector is detachably installed in one of the slots.

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