A high reliability and low cost float valve

Abstract

The utility model relates to the technical field of float valves, and in particular to a high-reliability, low-cost float valve. Its technical solution includes: an opening and closing component, the opening and closing component includes a supporting sheet metal and a connecting sheet metal, a fluororubber block is clamped and installed on the left side of the supporting sheet metal, through holes are provided on the front and rear sides of the supporting sheet metal and the fluororubber block, a connecting rod is fixedly sleeved in the through holes, a rotating hole is provided on the front and rear sides of the connecting sheet metal, the connecting rod is rotatably connected to the two rotating holes, a welding ring is provided on the left side of the connecting sheet metal, a connecting component is fixedly welded in the welding ring, a clamping ring is provided on the right side of the supporting sheet metal, and a buoyancy component is clamped in the clamping ring. The utility model not only has good sealing performance, can automatically open and close according to the change of liquid height, but also has a simple manufacturing process and low manufacturing cost.

Description

Technical Field

[0001] The utility model relates to the technical field of float valves, in particular to a float valve with high reliability and low cost. Background Art

[0002] In the oil tank of the rotary vane vacuum pump, a float valve device with high temperature resistance and good sealing performance is required.

[0003] However, in the prior art, the float valve used in equipment such as vacuum pumps has poor sealing performance after being used in liquid for a long time, high manufacturing cost and complicated manufacturing process. Utility Model Content

[0004] The utility model aims to provide a high-reliability and low-cost floating ball valve in view of the problems existing in the background technology.

[0005] To achieve this purpose, the utility model adopts the following technical solutions: a high-reliability, low-cost float valve, including an opening and closing component, the opening and closing component includes a supporting sheet metal and a connecting sheet metal, a fluororubber block is clamped and installed on the left side of the supporting sheet metal, through holes are provided on the front and rear sides of the supporting sheet metal and the fluororubber block, a connecting rod is fixedly sleeved in the through holes, a rotating hole is provided on the front and rear sides of the connecting sheet metal, the connecting rod is rotatably connected to the two rotating holes, a welding ring is provided on the left side of the connecting sheet metal, a connecting component is fixedly welded in the welding ring, a clamping ring is provided on the right side of the supporting sheet metal, a buoyancy component is clamped in the clamping ring.

[0006] Preferably, the connecting assembly includes a connecting body welded in a welding ring on the left side of the connecting sheet metal, a throttling hole is opened on the right side of the connecting body, and the throttling hole abuts against the left side of the fluororubber block.

[0007] Preferably, a mounting groove is provided on the periphery of the connector, and an O-ring is sleeved in the mounting groove.

[0008] Preferably, the buoyancy assembly comprises an aluminum metal bottle, a metal bottle cap is threadedly mounted on the left end of the aluminum metal bottle, and the metal bottle cap is snap-fitted into the clamping ring.

[0009] Preferably, a fluororubber gasket is detachably mounted on the left inner wall of the metal bottle cap, and the fluororubber gasket abuts against the left side of the aluminum metal bottle.

[0010] Preferably, the outer fixing sleeve of the aluminum metal bottle is provided with an O-shaped limiting ring, and the left side of the O-shaped limiting ring abuts against the right side of the supporting sheet metal.

[0011] The beneficial effects of the utility model are as follows: when using the device, the device is installed in the oil tank, and the end of the connector away from the aluminum metal bottle is connected to the vacuum pump body. When the liquid level in the oil tank continues to rise, the liquid will provide the aluminum metal bottle with rising buoyancy, and the aluminum metal bottle will drive the supporting sheet metal to rotate upward through the metal bottle cover, so that the fluororubber block clamped on the left side of the supporting sheet metal loosens the seal on the throttle hole, so that a pressure difference is generated between the vacuum pump body and the oil tank, and the liquid enters the vacuum pump body through the throttle hole, and the liquid level in the oil tank will decrease until the liquid level is lower than the bottom side of the aluminum metal bottle. After the aluminum metal bottle loses buoyancy, it drives the supporting sheet metal to rotate downward through its own weight, so that the fluororubber block can firmly abut and seal the throttle hole. The device not only has good sealing performance and automatically opens and closes according to the change of liquid level, but also has a simple manufacturing process and low manufacturing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view schematic diagram of the overall structure of a high-reliability, low-cost floating ball valve embodiment of the utility model in a spliced ​​state;

[0013] Figure 2 It is a front view schematic diagram of the overall structure of a high-reliability, low-cost floating ball valve embodiment of the utility model in a disassembled state;

[0014] Figure 3 It is a schematic cross-sectional view of the overall structure of a connecting assembly in an embodiment of a high-reliability and low-cost float valve of the utility model.

[0015] Figure numerals: 1. Opening and closing assembly; 11. Supporting sheet metal; 12. Connecting sheet metal; 13. Fluororubber block; 14. Through hole; 15. Connecting rod; 16. Rotating hole; 17. Snap ring; 2. Connecting assembly; 21. Connecting body; 22. Mounting groove; 23. O-ring; 24. Throttle hole; 3. Buoyancy assembly; 31. Aluminum metal bottle; 32. Metal bottle cap; 33. Fluororubber gasket; 34. O-ring limit ring. DETAILED DESCRIPTION

[0016] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0017] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0019] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0020] Embodiment 1

[0021] like Figure 1-3 As shown, the utility model proposes a high reliability, low cost float valve, including an opening and closing component 1, the opening and closing component 1 includes a supporting sheet metal 11 and a connecting sheet metal 12, a fluororubber block 13 is mounted on the left side of the supporting sheet metal 11, through holes 14 are provided on the front and rear sides of the supporting sheet metal 11 and the fluororubber block 13, a connecting rod 15 is fixedly sleeved in the through hole 14, a rotating hole 16 is provided on the front and rear sides of the connecting sheet metal 12, the connecting rod 15 is rotatably connected to the two rotating holes 16, and the connecting sheet metal 12 is connected to the connecting rod 15. A welding ring is provided on the left side of the sheet metal 12, and a connecting component 2 is fixedly welded in the welding ring. A clamping ring 17 is provided on the right side of the supporting sheet metal 11, and a buoyancy component 3 is clamped in the clamping ring 17. The connecting component 2 includes a connecting body 21 welded in the welding ring on the left side of the connecting sheet metal 12, a throttle hole 24 is provided on the right side of the connecting body 21, and the throttle hole 24 abuts against the left side of the fluororubber block 13; an installation groove 22 is provided on the periphery of the connecting body 21, and an O-ring 23 is sleeved in the installation groove 22.

[0022] In this embodiment: the supporting sheet metal 11 and the connecting sheet metal 12 are provided in order to connect the connecting component 2 and the buoyancy component 3 together, the fluororubber block 13 is provided in order to seal the throttle hole 24, and the aperture size of the throttle hole 24 can be adjusted according to the required oil flow effect, the through hole 14, the connecting rod 15 and the rotating hole 16 are provided in order to enable the supporting sheet metal 11 to be rotatably connected to the connecting sheet metal 12 through the connecting rod 15, and the mounting groove 22 and the O-ring 23 are provided in order to increase the sealing performance when the connector 21 is connected to other components.

[0023] Embodiment 2

[0024] like Figure 1-3 As shown, the utility model proposes a high-reliability, low-cost float valve. Compared with the first embodiment, the buoyancy component 3 includes an aluminum metal bottle 31, and the left end of the aluminum metal bottle 31 is threadedly installed with a metal bottle cap 32, and the metal bottle cap 32 is snap-fitted and installed in the clamping ring 17; a fluororubber gasket 33 is detachably installed on the left inner wall of the metal bottle cap 32, and the fluororubber gasket 33 abuts against the left side of the aluminum metal bottle 31; an O-type limit ring 34 is provided on the outer fixing sleeve of the aluminum metal bottle 31, and the left side of the O-type limit ring 34 abuts against the right side of the supporting sheet metal 11.

[0025] In this embodiment: the aluminum metal bottle 31 and the metal bottle cover 32 are provided to drive the support sheet metal 11 to rotate. After the aluminum metal bottle 31 and the metal bottle cover 32 are assembled, they will float on the surface of the liquid in the oil tank. When the liquid level rises, the aluminum metal bottle 31 is provided with an upward buoyancy, and the aluminum metal bottle 31 drives the support sheet metal 11 to rotate upward through the metal bottle cover 32. When the liquid does not provide an upward buoyancy, the aluminum metal bottle 31 drives the support sheet metal 11 to rotate downward through its own gravity. The fluororubber gasket 33 is provided to increase the sealing when the aluminum metal bottle 31 is connected to the metal bottle cover 32. The O-type limit ring 34 is provided to limit the movement between the aluminum metal bottle 31 and the support sheet metal 11 to avoid displacement between the aluminum metal bottle 31 and the support sheet metal 11, thereby ensuring that the device can accurately detect the oil level.

[0026] Working principle: When using this device, install it in the oil tank, and make the end of the connector 21 away from the aluminum metal bottle 31 connected to the vacuum pump body. When the liquid level in the oil tank continues to rise, the liquid will provide buoyancy to the aluminum metal bottle 31, and the aluminum metal bottle 31 will drive the supporting sheet metal 11 to rotate upward through the metal bottle cover 32, so that the fluororubber block 13 clamped on the left side of the supporting sheet metal 11 releases the seal on the throttle hole 24, so that a pressure difference is generated between the vacuum pump body and the oil tank, and the liquid enters the vacuum pump body through the throttle hole 24. The liquid level in the oil tank will decrease until the liquid level is lower than the bottom side of the aluminum metal bottle 31. After the aluminum metal bottle 31 loses buoyancy, it drives the supporting sheet metal 11 to rotate downward through its own weight, so that the fluororubber block 13 can firmly abut and seal the throttle hole 24.

[0027] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A high reliability, low cost float valve, characterized in that: The invention comprises an opening and closing component (1), wherein the opening and closing component (1) comprises a supporting sheet metal (11) and a connecting sheet metal (12), wherein a fluororubber block (13) is mounted on the left side of the supporting sheet metal (11), through holes (14) are provided on the front and rear sides of the supporting sheet metal (11) and the fluororubber block (13), a connecting rod (15) is fixedly sleeved in the through holes (14), a rotating hole (16) is provided on the front and rear sides of the connecting sheet metal (12), the connecting rod (15) is rotatably connected to the two rotating holes (16), a welding ring is provided on the left side of the connecting sheet metal (12), a connecting component (2) is fixedly welded in the welding ring, and a clamping ring (17) is provided on the right side of the supporting sheet metal (11), a buoyancy component (3) is clamped in the clamping ring (17).

2. A high reliability, low cost float valve according to claim 1, characterized in that: The connecting assembly (2) comprises a connecting body (21) welded in a welding ring on the left side of the connecting sheet metal (12), a throttle hole (24) is provided on the right side of the connecting body (21), and the throttle hole (24) abuts against the left side of the fluororubber block (13).

3. A high reliability, low cost float valve according to claim 2, characterized in that: The outer periphery of the connecting body (21) is provided with a mounting groove (22), and an O-type sealing ring (23) is sleeved in the mounting groove (22).

4. A high reliability, low cost float valve according to claim 1, characterized in that: The buoyancy assembly (3) comprises an aluminum metal bottle (31), the left end of which is threadedly mounted with a metal bottle cap (32), and the metal bottle cap (32) is snap-fitted into a snap ring (17).

5. A high reliability, low cost float valve according to claim 4, characterized in that: A fluororubber gasket (33) is detachably mounted on the left inner wall of the metal bottle cover (32), and the fluororubber gasket (33) abuts against the left side of the aluminum metal bottle (31).

6. A high reliability, low cost float valve according to claim 4, characterized in that: An O-shaped limiting ring (34) is provided on the outer fixing sleeve of the aluminum metal bottle (31), and the left side of the O-shaped limiting ring (34) abuts against the right side of the supporting sheet metal (11).

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