High-sealing fluorine-lined ball valve

Abstract

The utility model relates to the field of fluorine-lined ball valves, in particular to a high-sealing fluorine-lined ball valve which comprises a valve body, a valve seat is installed above the valve body, a rotating disc is installed on one side of the valve seat and is in shaft connection with the input end of the valve seat, a valve rod is installed at the output end of the lower portion of the valve seat, and the valve rod is rotationally connected with the interior of the valve body. A disc-shaped valve element is installed on one side of the valve rod, and a sealing ring is welded to the inner wall of the valve body. By means of the pressure inside a pipeline, the pressure acts on the push ring, the second conical ring drives the first conical ring to move, and therefore the rubber sealing ring is tightly attached to the outer edge of the disc-shaped valve element, and the sealing performance of matching of the disc-shaped valve element and the sealing ring is guaranteed; therefore, a gap generated between the disc-shaped valve element and the sealing ring can be automatically compensated and sealed, the sealing performance is high in the daily use process, the sealing performance can be achieved without additional power, and the practicability of the fluorine lining ball valve is improved.

Description

Technical Field

[0001] The utility model relates to the field of fluorine-lined ball valves, in particular to a high-sealing fluorine-lined ball valve. Background Art

[0002] The fluorine-lined ball valve uses a sphere with a circular through-hole as the opening and closing element. The sphere rotates around the centerline of the valve body along with the valve stem to open and close the valve. It uses a special molding process to achieve a dense and excellent sealing surface. Combined with the V-shaped PTFE packing, the valve achieves zero leakage.

[0003] A search revealed a utility model patent with publication number CN218863315U, specifically disclosing a corrosion-resistant fluorine-lined ball valve comprising a main pipe, a secondary pipe, a handle, and a replacement device. The main pipe is placed on the surface of the secondary pipe, having a disc-shaped cross-section. The handle is rotatably connected to the upper surface of the main pipe, and has a long, strip-shaped longitudinal section. The replacement device is disposed on the surface of the secondary pipe and includes a receiving groove, which is provided on the surface of the secondary pipe and has a circular cross-section. A leak-proof ring is fixedly connected to the surface of the main pipe, which has a circular cross-section and is plugged into the inner surface of the receiving groove. The inner surface of the secondary pipe is fixedly connected to the main rod. The replacement device effectively replaces the safety ring inside the fluorine-lined ball valve, thereby improving the practicality, auxiliary function, and operating efficiency of the fluorine-lined ball valve, reducing pipeline leakage, and enhancing the corrosion resistance of the fluorine-lined ball valve.

[0004] During use, the existing fluorine-lined ball valve needs to be rotated to disengage the sealing ring connecting the valve core and the valve body, thereby realizing the opening and closing of the valve body. However, during long-term use, a certain amount of wear and tear will occur between the valve core and the sealing ring, resulting in a gap, causing the valve body to not close tightly, thereby affecting the normal use of the fluorine-lined ball valve.

[0005] Therefore, it is necessary to invent a high-sealing fluorine-lined ball valve to solve the above problems. Utility Model Content

[0006] The purpose of the utility model is to provide a high-sealing fluorine-lined ball valve, which drives the cone ring to move by the pressure extrusion inside the pipeline, so as to achieve the fit between the rubber sealing ring and the outer edge of the disc valve core, thereby improving the overall sealing effect of the disc valve core and the sealing ring, so as to solve the problem in the prior art that the sealing of the valve core and the sealing ring of the fluorine-lined ball valve decreases after long-term use.

[0007] In order to achieve the above-mentioned object, the utility model provides the following technical solution: a high-sealing fluorine-lined ball valve, comprising a valve body, a valve seat is installed above the valve body, a turntable is installed on one side of the valve seat, and the turntable is axially connected to the input end of the valve seat, a valve stem is installed at the output end below the valve seat, and the valve stem is rotatably connected to the inside of the valve body, a disc-shaped valve core is installed on one side of the valve stem, a sealing ring is welded on the inner wall of the valve body, and the inner wall of the sealing ring is in contact with the outer edge of the disc-shaped valve core;

[0008] The sealing assembly includes an annular groove, which is provided on the inner wall of the sealing ring. An annular limiting groove is provided on the inner wall of the annular groove. An annular connecting groove is provided on the inner wall of the annular groove. A through hole is provided on the inner wall of the annular connecting groove.

[0009] Preferably, the sealing assembly further comprises a conical ring 1, which is arranged in the annular groove, a limiting ring is fixedly sleeved on the conical ring 1, and the limiting ring is slidably connected to the annular limiting groove.

[0010] Preferably, the inner wall of the conical ring fits the shape of the outer edge of the disc valve core, a rubber sealing ring is installed on the inner wall of the conical ring, and the rubber sealing ring fits the outer edge of the disc valve core, and the through holes are distributed in an annular shape and are opened on the inner wall of the annular connecting groove.

[0011] Preferably, a second conical ring is provided in the annular connecting groove, and the inclined surface inside the second conical ring fits with the inclined surface outside the first conical ring.

[0012] Preferably, a plurality of push rods are installed in a circular distribution on one side of the conical ring 2, and the push rods are connected with the corresponding through holes.

[0013] Preferably, a push ring is installed on one side of the push rod, and the push ring is arranged outside the sealing ring. An annular extrusion groove is opened on the side of the push ring away from the push rod, and the side of the valve body close to the annular extrusion groove is connected to the end of the pipeline with higher pressure.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] Through the pressure inside the pipeline itself, the pressure acts on the push ring, so that the tapered ring 2 drives the tapered ring 1 to move, so that the rubber sealing ring fits tightly against the outer edge of the disc valve core, thereby ensuring the sealing of the disc valve core and the sealing ring. Due to the mobility of the tapered ring 1 in the annular groove, the gap between the disc valve core and the sealing ring can be automatically compensated and sealed, and has a high sealing performance during daily use. It can be achieved without setting additional power, thereby improving the practicality of the fluorine-lined ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the planed structure of the sealing ring of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the valve body of the present utility model;

[0020] Figure 4 For the utility model Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 5 For the utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0022] Description of reference numerals:

[0023] 001, valve body; 101, valve seat; 102, turntable; 103, valve stem; 104, disc-shaped valve core; 105, sealing ring; 002, sealing assembly; 201, annular groove; 202, annular limiting groove; 203, annular connecting groove; 204, through hole; 205, conical ring 1; 206, limiting ring; 207, rubber sealing ring; 208, conical ring 2; 209, push rod; 210, push ring; 211, annular extrusion groove. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides Figure 1-5 The illustrated embodiment shows a high-sealing fluorine-lined ball valve, comprising a valve body 001, a valve seat 101 mounted above the valve body 001, a rotary disk 102 mounted on one side of the valve seat 101, and the rotary disk 102 is axially connected to the input end of the valve seat 101, a valve stem 103 mounted on the output end below the valve seat 101, and the valve stem 103 is rotatably connected to the interior of the valve body 001, a disc-shaped valve core 104 mounted on one side of the valve stem 103, and a sealing ring 105 welded to the inner wall of the valve body 001, the inner wall of the sealing ring 105 being in contact with the outer edge of the disc-shaped valve core 104;

[0026] The turntable 102 can drive the components inside the valve seat 101 to work, so that the valve stem 103 below the valve seat 101 drives the disc-shaped valve core 104 to separate from the sealing ring 105, thereby opening and closing the interior of the valve body 001.

[0027] The sealing assembly 002 includes an annular groove 201, which is provided on the inner wall of the sealing ring 105. An annular limiting groove 202 is provided on the inner wall of the annular groove 201. An annular connecting groove 203 is provided on the inner wall of the annular groove 201. A through hole 204 is provided on the inner wall of the annular connecting groove 203.

[0028] Furthermore, in the above structure, the sealing assembly 002 also includes a conical ring 205, which is arranged in the annular groove 201, and a limiting ring 206 is fixedly sleeved on the conical ring 205, and the limiting ring 206 is slidably connected to the annular limiting groove 202.

[0029] Through the cooperation between the limiting ring 206 and the annular limiting groove 202, the conical ring 1 205 can slide within the annular groove 201.

[0030] Furthermore, in the above structure, the inner wall of the conical ring 205 is in shape with the outer edge of the disc-shaped valve core 104, a rubber sealing ring 207 is installed on the inner wall of the conical ring 205, and the rubber sealing ring 207 is in shape with the outer edge of the disc-shaped valve core 104, and the through hole 204 is distributed in an annular shape and is opened on the inner wall of the annular connecting groove 203.

[0031] The rubber sealing ring 207 on the inner wall of the tapered ring 205 fits against the outer edge of the disc-shaped valve core 104, thereby ensuring the sealing between the disc-shaped valve core 104 and the sealing ring 105. Since the rubber sealing ring 207 fits and seals by moving to one side, the rubber sealing ring 207 can automatically perform sealing compensation according to the wear of the disc-shaped valve core 104.

[0032] Furthermore, in the above structure, a second conical ring 208 is provided in the annular connecting groove 203 , and the inner inclined surface of the second conical ring 208 fits with the outer inclined surface of the first conical ring 205 .

[0033] By moving the conical ring 208, its inclined surface is squeezed against the inclined surface outside the conical ring 1 205, thereby moving the conical ring 1 205.

[0034] Furthermore, in the above structure, a plurality of push rods 209 are installed in a circular distribution on one side of the conical ring 208 , and the push rods 209 are connected to the corresponding through holes 204 .

[0035] Through the cooperation between the push rod 209 and the through hole 204, the push rod 209 can pass through the inside of the through hole 204 and push the conical ring 208 to move, and the connection between the push rod 209 and the through hole 204 adopts a sealed sliding connection to ensure the overall sealing of the sealing ring 105.

[0036] Furthermore, in the above structure, a push ring 210 is installed on one side of the push rod 209, and the push ring 210 is arranged on the outside of the sealing ring 105. An annular extrusion groove 211 is provided on the side of the push ring 210 away from the push rod 209, and the valve body 001 is connected to the end of the pipeline with higher pressure close to the annular extrusion groove 211.

[0037] The annular extrusion groove 211 is directed toward the end of the pipeline with greater pressure, so that the pressure is concentrated inside the annular extrusion groove 211, so that the push ring 210 can push multiple groups of push rods 209 to move simultaneously, thereby pushing the conical ring 208.

[0038] This utility works as follows:

[0039] Refer to the instruction manual Figure 1-5 By connecting the end of the valve body 001 close to the annular extrusion groove 211 to the flange of the end with higher pressure inside the pipeline, when the disc valve core 104 and the sealing ring 105 are in a closed state, the pressure will squeeze the inside of the annular extrusion groove 211, thereby moving the push ring 210 and the push rod 209, so that the tapered ring 208 squeezes the tapered ring 1 205 to move, so that the tapered ring 1 205 drives the rubber sealing ring 207 to fit onto the outer edge of the disc valve core 104, thereby ensuring the sealing performance of the disc valve core 104 and the sealing ring 105. By utilizing the pressure inside the pipeline itself to drive the rubber sealing ring 207 to move, the gap between the disc valve core 104 and the sealing ring 105 after long-term use is automatically compensated and sealed, and it has high sealing performance in daily use, and can be achieved without setting additional power, thereby improving the practicality of the fluorine-lined ball valve.

[0040] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-sealing fluorine-lined ball valve, comprising a valve body (001), characterized in that: A valve seat (101) is installed above the valve body (001), a rotary disk (102) is installed on one side of the valve seat (101), and the rotary disk (102) is axially connected to the input end of the valve seat (101), a valve stem (103) is installed at the output end below the valve seat (101), and the valve stem (103) is rotatably connected to the inside of the valve body (001), a disc-shaped valve core (104) is installed on one side of the valve stem (103), and a sealing ring (105) is welded on the inner wall of the valve body (001), and the inner wall of the sealing ring (105) is in contact with the outer edge of the disc-shaped valve core (104); The sealing assembly (002) disposed in the valve body (001) comprises an annular groove (201), the annular groove (201) being provided on the inner wall of the sealing ring (105), an annular limiting groove (202) being provided on the inner wall of the annular groove (201), an annular connecting groove (203) being provided on the inner wall of the annular groove (201), and a through hole (204) being provided on the inner wall of the annular connecting groove (203).

2. A high sealing fluorine-lined ball valve according to claim 1, characterized in that: The sealing assembly (002) further comprises a conical ring (205), wherein the conical ring (205) is arranged in the annular groove (201), a limiting ring (206) is sleeved and fixed on the conical ring (205), and the limiting ring (206) is slidably connected to the annular limiting groove (202).

3. A high-sealing fluorine-lined ball valve according to claim 2, characterized in that: The inner wall of the conical ring (205) is in conformity with the outer edge of the disc-shaped valve core (104). A rubber sealing ring (207) is installed on the inner wall of the conical ring (205), and the rubber sealing ring (207) is in conformity with the outer edge of the disc-shaped valve core (104). The through holes (204) are arranged in an annular shape on the inner wall of the annular connecting groove (203).

4. The high-sealing fluorine-lined ball valve according to claim 1, characterized in that: A second conical ring (208) is provided in the annular connecting groove (203), and the inner inclined surface of the second conical ring (208) is fitted with the outer inclined surface of the first conical ring (205).

5. The high-sealing fluorine-lined ball valve according to claim 4, characterized in that: A plurality of push rods (209) are installed in an annular distribution on one side of the conical ring 2 (208), and the push rods (209) are connected to the corresponding through holes (204).

6. The high-sealing fluorine-lined ball valve according to claim 5, characterized in that: A push ring (210) is installed on one side of the push rod (209), and the push ring (210) is arranged outside the sealing ring (105). An annular extrusion groove (211) is provided on the side of the push ring (210) away from the push rod (209), and the side of the valve body (001) close to the annular extrusion groove (211) is connected to the end of the pipeline with higher pressure.

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