Adjustable floating ball valve

Abstract

The utility model relates to the field of valves, in particular to an adjustable floating ball valve which comprises a valve body and a floating ball mechanism. During use, the valve body is mounted on the inner wall of a water tank, the water inlet of the valve body is connected with a water inlet pipe, and the floating ball mechanism and the valve body are mounted in the water tank. When the water level in the water tank is lower than a preset value, due to the additional gravity of the balancing weight, the floating ball stably descends, the flexible element is pulled, the connecting plate is pulled by the flexible element to drive the valve rod, the valve element is opened, water flows out of the water outlet at the moment, and water is supplemented to the water tank. When the water level reaches a preset value, the floating ball stably floats upwards to pull the flexible element to drive the valve rod to close the valve element, and the water outlet stops discharging water. The floating ball and the valve rod are connected through the flexible element, after the floating ball floats upwards to close the valve element, due to the fact that the flexibility of the flexible element can absorb part of fluctuation energy of liquid, the valve element cannot be opened again due to fluctuation of the water surface, and the water hammer caused by frequent opening and the reduction of the service life of the valve are effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of valves, and in particular to an adjustable float valve. Background Technology

[0002] A float valve is an automatic control device widely used in liquid storage tanks, water tanks, and sewage treatment systems. It uses the buoyancy of a float to open and close the valve, thereby automatically regulating the liquid level. Traditional float valves have a simple structure, but they still have some technical drawbacks in practical applications. For example, the linkage between the float and the valve stem in traditional float valves is often rigid, which can easily cause malfunctions when the liquid fluctuates or the pressure changes, leading to frequent valve opening and closing and shortening its service life. Utility Model Content

[0003] To address the shortcomings mentioned above in the background technology, this utility model provides an adjustable float valve.

[0004] The present invention adopts the following technical solution:

[0005] An adjustable float valve, characterized in that the float valve comprises:

[0006] A valve body is provided with a valve core between the inlet and outlet of the valve body. The valve core is used to control the opening and closing of the pipeline between the inlet and outlet. The valve stem of the valve core protrudes from the surface of the valve body.

[0007] A float mechanism, comprising a connecting plate, a flexible element, a counterweight, and a float, wherein the connecting plate is connected to the valve stem of the valve body, and the bottom of the connecting plate is connected to the counterweight via the flexible element, and the other end of the counterweight is connected to the float;

[0008] The valve body has an inlet connected to an inlet pipe. When the float and the counterweight descend, they pull the flexible element. The connecting plate drives the valve stem to open the valve core, and water flows out of the outlet. When the float, carrying the counterweight, rises, it pulls the flexible element, which in turn drives the valve stem to close the valve core, and water flows out of the outlet.

[0009] As a further improvement, the valve stem end face is provided with a mounting hole, and the connecting plate side has a through-hole. The through-hole is adapted to the valve stem. After the valve stem passes through the through-hole, a No. 1 screw is screwed into the mounting hole. The No. 1 screw is used to connect and fix the connecting plate and the valve stem.

[0010] As a further improvement, the outer circumferential wall of the valve stem is provided with several slots, and the wall of the connecting hole is provided with several teeth. The teeth are adapted to the slots, and when the valve stem is inserted into the connecting hole, the teeth are respectively embedded in the slots.

[0011] As a further improvement, a washer is provided between the No. 1 screw and the connecting plate, and the No. 1 screw passes through the washer and is screwed into the mounting hole of the valve stem.

[0012] As a further improvement, a float connecting rod is provided on the outside of the float. The float connecting rod passes through the counterweight and connects to the float. A connecting ring is provided at the top of the float connecting rod to press and fix the counterweight to the outside of the float.

[0013] As a further improvement, the bottom of the connecting plate is also provided with the connecting ring, and the two ends of the flexible element are respectively connected to the two connecting rings.

[0014] As a further improvement, each end of the flexible element is provided with an adjustment part. The upper surface of the adjustment part has a first hole and a second hole. The side of the adjustment part is provided with a fixing hole. The fixing hole extends through the first hole and the second hole. When one end of the flexible element passes through the first hole, enters the connecting ring, and then exits through the second hole, the second screw is screwed into the fixing hole. The second screw is used to connect and fix the flexible element to the adjustment part.

[0015] As a further improvement, the flexible element is a steel wire rope.

[0016] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: In use, the valve body is installed on the inner wall of the water tank, and the water inlet of the valve body is connected to the water inlet pipe. At this time, the float mechanism and the valve body are installed inside the water tank. When the water level in the tank is lower than the preset value, due to the additional gravity of the counterweight, the float descends smoothly, pulling the flexible element. The connecting plate, pulled by the flexible element, drives the valve stem, opening the valve core. At this time, water flows out of the outlet, replenishing the water tank. When the water level reaches the preset value, the float rises smoothly, pulling the flexible element to drive the valve stem and close the valve core, and the water outlet stops flowing. This utility model uses a flexible element to connect the float and the valve stem. After the float rises and closes the valve core, the flexibility of the flexible element can absorb some of the liquid fluctuation energy. Therefore, the valve core will not reopen due to water surface fluctuations, effectively reducing water hammer and valve life reduction caused by frequent opening and closing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the valve body.

[0019] Figure 3 This is a three-dimensional structural diagram of the float mechanism.

[0020] Figure 4 for Figure 3 An enlarged diagram of A in the diagram.

[0021] Figure 5 This is a schematic diagram showing the connection between the valve stem and the connecting plate.

[0022] Figure 6 A three-dimensional structural diagram showing the float rising and the valve core closing. Detailed Implementation

[0023] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0024] As attached Figure 1 and Figure 2 As shown, an adjustable float valve includes a valve body 1 and a float mechanism 2. A valve core is provided between the inlet 11 and outlet 12 of the valve body 1, and the valve core is used to control the opening and closing of the pipeline between the inlet 11 and outlet 12. In use, the valve body 1 is installed on the inner wall of a water tank, and the inlet 11 of the valve body 1 is connected to an inlet pipe, which can be a municipal water supply pipe. By controlling the opening and closing of the valve core, water is discharged from the outlet 12 of the valve body 1 to replenish the water tank, or to stop water discharge and replenishment.

[0025] As attached Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the opening and closing of the valve core is controlled by the float mechanism 2. Specifically, the valve stem 13 of the valve core protrudes from the surface of the valve body 1, and the float mechanism 2 is connected to the valve stem 13. The float mechanism 2 includes a connecting plate 21, a flexible element 22, a counterweight 23, and a float 24. The connecting plate 21 is connected to the valve stem 13 of the valve body 1. Specifically, the end face of the valve stem 13 is provided with a mounting hole 132, and the side of the connecting plate 21 has a connecting hole 211 that is adapted to the valve stem 13. After the valve stem 13 passes through the connecting hole 211, the No. 1 screw 3 is screwed into the mounting hole 132 until the No. 1 screw 3 presses the connecting plate 21 against the surface of the limiting plane 133 at the tail end of the valve stem 13, thereby connecting and fixing the connecting plate 21 to the valve stem 13.

[0026] As attached Figure 3 and Figure 6As shown, the bottom of the connecting plate 21 is connected to the counterweight 23 via a flexible element 22, and the other end of the counterweight 23 is connected to the float 24. Specifically, the float 24 has a float connecting rod 25 on its outer side, which passes through the counterweight 23 and connects to the float 24. The float connecting rod 25 and the float 24 are connected by threads until the connecting ring 27 at the top of the float connecting rod 25 presses and fixes the counterweight 23 to the outside of the float 24. In use, the float mechanism 2 and the valve body 1 are installed in the water tank. When the water level in the tank is lower than the preset value, the float 24 descends smoothly due to the additional gravity of the counterweight 23, pulling the flexible element 22. Under the pull of the flexible element 22, the connecting plate 21 drives the valve stem 13, opening the valve core. At this time, water flows out of the outlet 12 to replenish the water tank. When the water level reaches the preset value, the float 24 floats up, pulling the flexible element 22 to drive the valve stem 13 to close the valve core, and the water outlet stops flowing. Preferably, the flexible element is a steel wire rope. The flexibility of the steel wire rope can absorb some of the energy from liquid fluctuations, so the valve core will not reopen due to water surface fluctuations, effectively reducing water hammer and valve life reduction caused by frequent opening. Alternatively, the flexible element can also be a chain or cable, which can still utilize its flexibility to reduce the number of valve openings.

[0027] Further details are attached. Figure 2 and Figure 3 As shown, the outer circumferential wall of the valve stem 13 is provided with several grooves 131, and the wall of the connecting hole 211 is provided with several teeth 212. The teeth 212 are adapted to the grooves 131. When the valve stem 13 is inserted into the connecting hole 211, the teeth 212 are respectively embedded in the grooves 131. The inner wall of the groove 131 restricts the outer wall of the teeth 212, so that the connecting plate 21 and the valve stem 13 are stably connected, preventing the connecting plate 21 from rotating outside the valve stem 13, which would affect the use of the float valve. Preferably, a washer 31 is provided between the screw 3 and the connecting plate 21. The screw 3 passes through the washer 31 and is screwed into the mounting hole 132 of the valve stem 13. The washer 31 can increase the stability and tightening force of the screw 3 connection.

[0028] It is worth mentioning that, as shown in the attached document Figure 3 and Figure 4As shown, the bottom of the connecting plate 21 is also provided with a connecting ring 27. Both ends of the flexible element 22 are connected to the two connecting rings 27 respectively. Specifically, each end of the flexible element 22 is provided with an adjusting part 26. The upper surface of the adjusting part 26 has a first hole 261 and a second hole 262 penetrating through it, and the side of the adjusting part 26 is provided with a fixing hole 263, which extends through the first hole 261 and the second hole 262. In use, one end of the flexible element 22 is passed through the first hole 261, into the connecting ring 27, and then out through the second hole 262. Then, the second screw 264 is screwed into the fixing hole 263 until the second screw 264 presses the end of the flexible element 22 tightly into the first hole 261 and the second hole 262, thereby connecting and fixing the flexible element 22 to the adjusting part 26. Furthermore, during subsequent use, the length of the flexible element 22 can be adjusted by loosening the second screw 264 to adjust the preset water level.

[0029] In summary, when using this invention, the valve body 1 is installed on the inner wall of the water tank, and the inlet 11 of the valve body 1 is connected to the inlet pipe. At this time, the float mechanism 2 and the valve body 1 are installed inside the water tank. When the water level in the tank is lower than the preset value, the float 24 descends smoothly due to the additional gravity of the counterweight 23, pulling the flexible element 22. The connecting plate 21, pulled by the flexible element 22, drives the valve stem 13, opening the valve core. At this time, water flows out of the outlet 12 to replenish the water tank. When the water level reaches the preset value, the float 24 rises smoothly, pulling the flexible element 22 to drive the valve stem 13 to close the valve core, and the water outlet stops flowing. This invention uses the flexible element 22 to connect the float 24 and the valve stem 13. After the float 24 rises and closes the valve core, the flexibility of the flexible element 22 can absorb some of the liquid fluctuation energy. Therefore, the valve core will not reopen due to water surface fluctuations, effectively reducing water hammer and valve life reduction caused by frequent opening and closing. Compared to rigid connections, flexible element 22 can reduce the hard impact between float 24 and valve stem 13, and extend the service life of valve seals.

[0030] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. An adjustable float valve, characterized in that, The float valve includes: A valve body is provided with a valve core between the inlet and outlet of the valve body. The valve core is used to control the opening and closing of the pipeline between the inlet and outlet. The valve stem of the valve core protrudes from the surface of the valve body. A float mechanism, comprising a connecting plate, a flexible element, a counterweight, and a float, wherein the connecting plate is connected to the valve stem of the valve body, and the bottom of the connecting plate is connected to the counterweight via the flexible element, and the other end of the counterweight is connected to the float; The valve body has an inlet connected to an inlet pipe. When the float and the counterweight descend, they pull the flexible element. The connecting plate drives the valve stem to open the valve core, and water flows out of the outlet. When the float, carrying the counterweight, rises, it pulls the flexible element, which in turn drives the valve stem to close the valve core, and water flows out of the outlet.

2. An adjustable float valve as described in claim 1, characterized in that: The valve stem end face is provided with a mounting hole, and the connecting plate has a connecting hole through it on the side. The connecting hole is adapted to the valve stem. After the valve stem passes through the connecting hole, a No. 1 screw is screwed into the mounting hole. The No. 1 screw is used to connect and fix the connecting plate and the valve stem.

3. An adjustable float valve as described in claim 2, characterized in that: The valve stem has a plurality of slots on its outer circumference and the connecting hole has a plurality of teeth on its wall. The teeth are adapted to the slots and when the valve stem is inserted into the connecting hole, the teeth are respectively embedded in the slots.

4. An adjustable float valve as described in claim 2, characterized in that: A washer is provided between the No. 1 screw and the connecting plate, and the No. 1 screw passes through the washer and is screwed into the mounting hole of the valve stem.

5. An adjustable float valve as described in claim 1, characterized in that: The float is provided with a float connecting rod on the outside. The float connecting rod passes through the counterweight and is connected to the float. The connecting ring at the top of the float connecting rod is used to press and fix the counterweight to the outside of the float.

6. An adjustable float valve as described in claim 5, characterized in that: The bottom of the connecting plate is also provided with the connecting ring, and both ends of the flexible element are respectively connected to the two connecting rings.

7. An adjustable float valve as described in claim 6, characterized in that: The flexible element has an adjustment part at each end. The upper surface of the adjustment part has a first hole and a second hole. The side of the adjustment part has a fixing hole. The fixing hole extends through the first hole and the second hole. When one end of the flexible element passes through the first hole, enters the connecting ring, and then exits through the second hole, the second screw is screwed into the fixing hole. The second screw is used to connect and fix the flexible element to the adjustment part.

8. An adjustable float valve as described in claim 1, characterized in that: The flexible element is a steel wire rope.

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