Anti-loosening check ring structure of valve

Abstract

The utility model relates to the technical field of valves, in particular to an anti-loosening check ring structure of a valve. Comprising a valve seat, a valve rod and a sealing check ring mechanism, the sealing check ring mechanism comprises a gasket, an O-shaped sealing ring, a shaft sleeve, a V-shaped sealing ring, a pressing ring, an abutting ring, a plurality of abutting rods and a sealing cover, the gasket, the O-shaped sealing ring, the shaft sleeve, the V-shaped sealing ring and the pressing ring are sequentially stacked in a sealing cavity, the sealing cover is connected to the top end of the valve seat in a threaded mode, and in the rotating process of the sealing cover, the pressing ring is pressed against the abutting rods. And a plurality of abutting rods are driven to rotate in the sealing cavity, and then the abutting ring is driven to rotate and descend in the sealing cavity, so that when the abutting ring rotates on the upper surface of the pressing ring, downward pressure is applied to the pressing ring, and therefore force is applied to the V-shaped sealing ring, the shaft sleeve and the O-shaped sealing ring through the pressing ring; the sealing check ring in the sealing cavity is tightly installed in the sealing cavity, the phenomenon that the sealing check ring is loosened is avoided, and the good sealing performance of the valve rod and the valve seat is kept all the time.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve anti-loosening retaining ring structure. Background Art

[0002] A valve is a pipeline accessory used to open and close pipelines, control the flow direction, and adjust and control the parameters (temperature, pressure, and flow rate) of the transported medium. In order to ensure the seal of the moving valve stem during operation, a sealing retaining ring needs to be provided on the upper part of the valve body. The valve stem is kept sealed during operation through the sealing retaining ring.

[0003] However, the sealing retaining ring structure provided on the existing valves is relatively simple. After long-term use of the valve, there is a risk of loosening of the sealing retaining ring, resulting in an unsatisfactory sealing performance between the valve stem and the valve seat. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a valve anti-loosening retaining ring structure, aiming to solve the technical problem that the sealing retaining ring structure provided on the existing valves is relatively simple, and after long-term use of the valve, there is a risk of loosening of the sealing retaining ring, resulting in an unsatisfactory sealing performance between the valve stem and the valve seat.

[0005] To achieve the above purpose, the utility model provides a valve anti-loosening retaining ring structure, including a valve seat, a valve stem, and a sealing retaining ring mechanism. A sealing cavity is provided between the outer side wall of the valve stem and the inner side wall of the valve seat. The sealing retaining ring mechanism includes a gasket, an O-ring, a bushing, a V-ring, a compression ring, a supporting ring, a plurality of supporting rods, and a sealing cover. The gasket is arranged outside the valve stem and at the bottom of the sealing cavity. The O-ring is arranged at the top of the gasket. The bushing is arranged at the top of the O-ring. The V-ring is arranged at the top of the bushing. The compression ring is arranged at the top of the V-ring. The sealing cover is threadedly connected to the top of the valve seat. A plurality of the supporting rods are arranged on the inner top of the sealing cover. The supporting ring is arranged at one end of the plurality of supporting rods away from the sealing cover. The supporting ring is in contact with the upper part of the compression ring.

[0006] Wherein, first connecting blocks and second connecting blocks are respectively arranged at both ends of each supporting rod. The first connecting block is detachably connected to the inner top of the sealing cover, and the second connecting block is detachably connected to the upper surface of the supporting ring.

[0007] Wherein, internal threads are arranged on the inner side wall of the sealing cover, and external threads are arranged on the outer side wall of the top of the valve seat. The internal threads are adapted to the external threads.

[0008] Among them, the number of the V-shaped sealing rings is multiple, and the multiple V-shaped sealing rings are sequentially overlapped in an inverted structure between the shaft sleeve and the pressing ring.

[0009] Among them, a rotating handwheel is arranged on the outer side wall of the sealing cover, and anti-slip lines are arranged on the outer side wall of the rotating handwheel.

[0010] Among them, fixed wing plates are arranged on both sides of the rotating handwheel, and the fixed wing plates are detachably connected to the outer side wall of the sealing cover.

[0011] Among them, the valve anti-loosening retaining ring structure further includes a pressure sensor, and the pressure sensor is arranged on the inner top of the sealing cover.

[0012] Among them, a mounting seat is arranged on the inner top of the sealing cover, and the pressure sensor is installed inside the sealing cover.

[0013] For a valve anti-loosening retaining ring structure of the present utility model, the gasket, the O-shaped sealing ring, the shaft sleeve, the V-shaped sealing ring and the pressing ring are sequentially stacked in the sealing cavity, and the sealing cover is screwed to the top end of the valve seat. During the rotation of the sealing cover, a plurality of the abutting rods are driven to rotate inside the sealing cavity, and during the rotation process, the abutting ring is driven to rotate and descend inside the sealing cavity, so that when the abutting ring rotates on the upper surface of the pressing ring, a downward pressure is applied to the pressing ring, thereby applying force to the V-shaped sealing ring, the shaft sleeve and the O-shaped sealing ring through the pressing ring, so that the sealing retaining ring in the sealing cavity is tightly installed in the sealing cavity, avoiding the phenomenon of loosening of the sealing retaining ring, and enabling the valve stem and the valve seat to always maintain good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 is a schematic structural diagram of the valve anti-loosening retaining ring structure according to the first embodiment of the present utility model.

[0016] Figure 2 is provided by the present utility model Figure 1 partial enlarged structural view of part A.

[0017] Figure 3 is a schematic exploded structural diagram of the sealing cover and the valve seat according to the first embodiment of the present utility model.

[0018] Figure 4 It is a schematic structural diagram of the sealing cover in the second embodiment of the present utility model.

[0019] 101 - valve seat, 102 - valve stem, 103 - gasket, 104 - O-ring, 105 - bushing, 106 - V-ring, 107 - retaining ring, 108 - abutting ring, 109 - abutting rod, 110 - sealing cover, 111 - sealing cavity, 112 - first connecting block, 113 - second connecting block, 114 - internal thread, 115 - external thread, 116 - rotating handwheel, 117 - anti-slip pattern, 118 - fixed wing plate, 201 - pressure sensor, 202 - mounting seat. Specific embodiments

[0020] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0021] First embodiment:

[0022] Please refer to Figures 1 to 3 , wherein Figure 1 is a schematic structural diagram of the anti-loosening retaining ring structure of the valve in the first embodiment, Figure 2 is Figure 1 a partial enlarged structural view of the A position of Figure 3 is a schematic exploded view of the sealing cover and the valve seat in the first embodiment.

[0023] The present utility model provides an anti-loosening retaining ring structure for a valve: including a valve seat 101, a valve stem 102 and a sealing retaining ring mechanism. The sealing retaining ring mechanism includes a gasket 103, an O-ring 104, a bushing 105, a V-ring 106, a retaining ring 107, an abutting ring 108, a plurality of abutting rods 109 and a sealing cover 110. Through the foregoing solution, the problem that the sealing retaining ring structure provided on the existing valve is relatively simple, and there is a risk of loosening of the sealing retaining ring after the valve is used for a long time, resulting in unsatisfactory sealing performance between the valve stem 102 and the valve seat 101 is solved. It can be understood that the foregoing solution can be used in the structure of the anti-loosening sealing retaining ring for a valve.

[0024] For this specific embodiment, a sealing cavity 111 is provided between the outer side wall of the valve stem 102 and the inner side wall of the valve seat 101. The gasket 103 is arranged outside the valve stem 102 and at the bottom of the sealing cavity 111. The O-ring 104 is arranged at the top end of the gasket 103. The shaft sleeve 105 is arranged at the top end of the O-ring 104. The V-ring 106 is arranged at the top end of the shaft sleeve 105. The pressure ring 107 is arranged at the top end of the V-ring 106. The sealing cover 110 is threadedly connected to the top end of the valve seat 101. A plurality of holding rods 109 are arranged at the inner top of the sealing cover 110. A holding ring 108 is arranged at one end of the plurality of holding rods 109 away from the sealing cover 110. The holding ring 108 is in contact with the upper part of the pressure ring 107. The gasket 103, the O-ring 104, the shaft sleeve 105, the V-ring 106 and the pressure ring 107 are stacked in the sealing cavity 111 in sequence. The sealing cover 110 is screwed onto the top end of the valve seat 101. During the rotation of the sealing cover 110, it drives the plurality of holding rods 109 to rotate inside the sealing cavity 111, and during the rotation, it drives the holding ring 108 to rotate and descend inside the sealing cavity 111, so that when the holding ring 108 rotates on the upper surface of the pressure ring 107, it applies a downward pressure on the pressure ring 107, thereby applying a force on the V-ring 106, the shaft sleeve 105 and the O-ring 104 through the pressure ring 107, so that the sealing ring in the sealing cavity 111 is tightly installed in the sealing cavity 111, avoiding the phenomenon of loosening of the sealing ring, and enabling the valve stem 102 and the valve seat 101 to always maintain good sealing performance.

[0025] Wherein, a first connecting block 112 and a second connecting block 113 are respectively arranged at both ends of each holding rod 109. The first connecting block 112 is detachably connected to the inner top of the sealing cover 110, and the second connecting block 113 is detachably connected to the upper surface of the holding ring 108. The first connecting block 112 is fixed to the inner top of the sealing cover 110 by screws, and the second connecting block 113 is fixed to the upper surface of the holding ring 108 by screws, thereby completing the installation of the holding rod 109.

[0026] Secondly, an internal thread 114 is arranged on the inner side wall of the sealing cover 110, and an external thread 115 is arranged on the outer side wall of the top end of the valve seat 101. The internal thread 114 is adapted to the external thread 115. Through the arrangement of the internal thread 114 and the external thread 115, the sealing cover 110 is screwed onto the top end of the valve seat 101.

[0027] Meanwhile, the number of the V-shaped sealing rings 106 is multiple, and the multiple V-shaped sealing rings 106 are overlapped in an inverted structure in sequence between the shaft sleeve 105 and the pressure ring 107. Since the number of the V-shaped sealing rings 106 is multiple, when the abutting ring 108 applies a force to the pressure ring 107, the multiple V-shaped sealing rings 106 are overlapped in sequence under the force and are tightly installed in the sealing cavity 111, so that the sealing performance in the sealing cavity 111 is better.

[0028] In addition, a rotating handwheel 116 is arranged on the outer side wall of the sealing cover 110, anti-slip lines 117 are arranged on the outer side wall of the rotating handwheel 116, fixed wing plates 118 are arranged on both sides of the rotating handwheel 116, and the fixed wing plates 118 are detachably connected to the outer side wall of the sealing cover 110. The fixed wing plates 118 are installed on the outer side wall of the sealing cover 110 by screws. Through the arrangement of the rotating handwheel 116 and the anti-slip lines 117, it is more convenient to rotate the sealing cover 110.

[0029] When using the anti-loosening retaining ring structure of a valve in this embodiment, the gasket 103, the O-shaped sealing ring 104, the shaft sleeve 105, the V-shaped sealing rings 106 and the pressure ring 107 are stacked in sequence in the sealing cavity 111, and the sealing cover 110 is screwed on the top end of the valve seat 101. During the rotation of the sealing cover 110, it drives the multiple abutting rods 109 to rotate inside the sealing cavity 111, and during the rotation process, it drives the abutting ring 108 to rotate and descend inside the sealing cavity 111, so that when the abutting ring 108 rotates on the upper surface of the pressure ring 107, it applies a downward pressure to the pressure ring 107, thereby applying a force to the V-shaped sealing rings 106, the shaft sleeve 105 and the O-shaped sealing ring 104 through the pressure ring 107, so that the sealing retaining ring in the sealing cavity 111 is tightly installed in the sealing cavity 111, avoiding the phenomenon of loosening of the sealing retaining ring, so that the valve stem 102 and the valve seat 101 always maintain good sealing performance, and since the number of the V-shaped sealing rings 106 is multiple, when the abutting ring 108 applies a force to the pressure ring 107, the multiple V-shaped sealing rings 106 are overlapped in sequence under the force and are tightly installed in the sealing cavity 111, so that the sealing performance in the sealing cavity 111 is better.

[0030] Second Embodiment:

[0031] On the basis of the first embodiment, please refer to Figure 4 , Figure 4 which is a schematic structural diagram of the sealing cover in the second embodiment.

[0032] The anti-loosening retaining ring structure of a valve provided by the present utility model further includes a pressure sensor 201.

[0033] For this specific embodiment, a pressure sensor 201 is provided at the inner top of the sealing cover 110. By detecting whether the pressure in the sealing cavity 111 changes through the pressure sensor 201, it is determined whether there is a leak in the sealing cavity 111.

[0034] Among them, a mounting seat 202 is provided at the inner top of the sealing cover 110. The pressure sensor 201 is installed inside the sealing cover 110. Through the arrangement of the mounting seat 202, the installation of the pressure sensor 201 is completed.

[0035] When using the anti-loosening retaining ring structure of a valve in this embodiment, through the arrangement of the mounting seat 202, the installation of the pressure sensor 201 is completed. By detecting whether the pressure in the sealing cavity 111 changes through the pressure sensor 201, it is determined whether there is a leak in the sealing cavity 111.

[0036] The above-disclosed is only a preferred embodiment of the present utility model. Of course, the scope of rights of the present utility model cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A valve anti-loosening retaining ring structure, comprising a valve seat and a valve stem, wherein the valve stem is arranged through the interior of the valve seat, and a sealing cavity is arranged between the outer wall of the valve stem and the inner wall of the valve seat, characterized in that: Also included is a sealing retaining ring mechanism; The sealing retaining ring mechanism includes a gasket, an O-ring, a sleeve, a V-ring, a pressure ring, a supporting ring, a plurality of supporting rods and a sealing cover. The gasket is arranged on the outside of the valve stem and on the bottom of the sealing cavity. The top of the gasket is provided with the O-ring, the top of the O-ring is provided with the sleeve, the top of the sleeve is provided with the V-ring, the top of the V-ring is provided with the pressure ring, the top of the valve seat is threadedly connected with the sealing cover, the inner top of the sealing cover is provided with a plurality of supporting rods, the end of the plurality of supporting rods away from the sealing cover is provided with the supporting ring, and the supporting ring is fitted with the top of the pressure ring.

2. The valve anti-loosening retaining ring structure according to claim 1, characterized in that: Both ends of each of the abutting rods are respectively provided with a first connecting block and a second connecting block, wherein the first connecting block is detachably connected to the inner top of the sealing cover, and the second connecting block is detachably connected to the upper surface of the abutting ring.

3. The valve anti-loosening retaining ring structure according to claim 1, characterized in that: An internal thread is arranged on the inner side wall of the sealing cover, and an external thread is arranged on the outer side wall at the top end of the valve seat, and the internal thread is matched with the external thread.

4. The valve anti-loosening retaining ring structure according to claim 3, characterized in that: There are multiple V-shaped sealing rings, and the multiple V-shaped sealing rings are in an inverted structure and overlap in sequence between the shaft sleeve and the pressure ring.

5. The valve anti-loosening retaining ring structure according to claim 1, characterized in that: A rotating hand wheel is arranged on the outer side wall of the sealing cover, and anti-skid patterns are arranged on the outer side wall of the rotating hand wheel.

6. The valve anti-loosening retaining ring structure according to claim 5, characterized in that: Fixed wing plates are arranged on both sides of the rotating hand wheel, and the fixed wing plates are detachably connected to the outer side wall of the sealing cover.

7. The valve anti-loosening retaining ring structure according to claim 1, characterized in that: The valve anti-loosening retaining ring structure also includes a pressure sensor, and the pressure sensor is arranged on the inner top of the sealing cover.

8. The valve anti-loosening retaining ring structure according to claim 7, characterized in that: A mounting seat is provided at the inner top of the sealing cover, and the pressure sensor is installed inside the sealing cover.

Images