Stop valve mounting structure and stop valve

Abstract

The utility model provides a stop valve installation structure and a stop valve, and relates to the technical field of valve body structures, the stop valve installation structure comprises a valve rod and a valve clack, the valve clack is located at one end of the valve rod, a sealing disc is arranged on the periphery of the valve clack, and a backing ring is annularly arranged at the position, away from the end face of the valve rod and close to the edge, of the sealing disc. A clamping ring is annularly arranged on the end face of the sealing disc on the inner side of the backing ring, a flow guide column is arranged in the center of the sealing disc on the inner side of the clamping ring, a semi-arc water guide groove is formed in the flow guide column, and a rotating ring is arranged on the periphery, close to the bottom, of the flow guide column; the sealing disc is arranged on the periphery of the valve clack, the backing ring and the clamping ring are arranged on the edge of the sealing disc, the sealing effect of the valve is effectively enhanced, the sealing tightness and durability are further improved through the rubber gaskets arranged on the two sides of the backing ring and the chamfer design of the rubber gaskets, and leakage of a medium under the working condition of high pressure or large temperature change is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of valve body structure technology, and in particular to a gate valve mounting structure and a gate valve. Background Technology

[0002] In gate valve applications, traditional structures often suffer from problems such as poor sealing performance and easy leakage during use;

[0003] Most existing gate valve structures employ simple sealing methods, which are insufficient to effectively prevent media leakage, especially under high pressure or large temperature variations, where sealing performance issues become more pronounced. To improve this situation, existing technologies have proposed various design solutions, such as adding a sealing ring around the valve disc to enhance the sealing effect, or optimizing the fit between the valve stem and valve disc to improve sealing stability. However, while these improvements have enhanced local performance to some extent, they still fall short of achieving an ideal sealing effect overall, especially under long-term operation or frequent opening and closing, where leakage problems persist. Therefore, we propose a gate valve installation structure and a gate valve itself. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, improve the sealing performance of the valve, optimize the working stability and service life of the valve, and reduce fluid resistance.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A shut-off valve mounting structure includes a valve stem and a valve disc. The valve disc is located at one end of the valve stem. A sealing disc is provided around the valve disc. A gasket is provided annularly near the edge of the sealing disc away from the valve stem end face. A snap-fit ​​ring is provided annularly on the inner side of the sealing disc end face of the gasket. A flow guide column is provided at the center of the inner side of the sealing disc of the snap-fit ​​ring. A semi-circular arc water inlet groove is formed on the flow guide column. A rotating ring is provided around the bottom of the flow guide column.

[0007] Furthermore, a handwheel is provided at the top of the valve stem, a pressure ring is provided near the top of the valve stem, packing is fitted at the bottom of the pressure ring, and a threaded ring is provided on the periphery of the valve stem near the valve disc.

[0008] Furthermore, rubber washers are provided on both sides of the washer ring, and the outer ends of the rubber washers on both sides are chamfered.

[0009] This utility model also provides a shut-off valve, wherein valve frames are staggered on both sides of the valve interior corresponding to the flanges at both ends, and the two ends of the shut-off valve are connected to form a bottom-inlet and top-outlet channel through the valve frames. The top of the valve frames is provided with a squeezing groove and a snap-fit ​​groove respectively corresponding to the gasket and the snap-fit ​​ring, and the semi-circular arc water inlet groove is arranged towards the outlet direction of the bottom-inlet and top-outlet channel.

[0010] Furthermore, a snap-fit ​​sleeve is installed inside the shut-off valve corresponding to the flow guide column, and the flow guide column is rotatably connected to the snap-fit ​​sleeve by moving up and down through a rotating ring.

[0011] Furthermore, valve ports are formed between the valve holders, and the valve ports are adapted to the valve discs.

[0012] Furthermore, the guide column and valve port allow the fluid to impact the valve frame towards the outlet flange through the valve port, then bend back and squeeze into the lower semi-circular water inlet groove of the valve port, and then be discharged directly towards the pipeline end through the upper end of the upper semi-circular water inlet groove of the valve port.

[0013] Furthermore, the shut-off valve includes a valve cover and a pressure cap. The valve cover is threadedly connected and sealed at the top of the shut-off valve, the pressure cap is threadedly connected to the top of the valve cover, the packing is built between the valve cover and the pressure cap, the pressure ring is located in the internal cavity of the pressure cap, and the threaded ring is threadedly connected to the valve cover.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. By setting a sealing disc around the valve disc and setting gaskets and snap rings at the edge of the sealing disc, the sealing effect of the valve is effectively enhanced. The rubber gaskets on both sides of the gasket and their chamfer design further improve the tightness and durability of the seal, effectively preventing leakage of the medium under high pressure or large temperature change conditions.

[0016] 2. The semi-circular water inlet groove design on the guide column reduces fluid resistance, allowing the fluid to flow more smoothly through the valve port, reducing the number of bends the medium has to pass through, and thus avoiding seal wear and damage caused by fluid impact. Attached Figure Description

[0017] Figure 1 This utility model provides a gate valve installation structure and a schematic diagram of the overall structure of the gate valve;

[0018] Figure 2 A gate valve mounting structure and an overall structural anatomical diagram of the gate valve provided by this utility model;

[0019] Figure 3 A schematic diagram of the installation structure of a shut-off valve and the overall anatomical structure of the shut-off valve provided by this utility model;

[0020] Figure 4 This utility model provides a gate valve installation structure and a schematic diagram of the gate valve disc structure.

[0021] Legend: 1. Valve stem; 11. Handwheel;

[0022] 2. Valve disc; 21. Sealing disc; 22. Gasket; 221. Rubber gasket; 23. Snap-fit ​​ring; 24. Guide column; 241. Rotating ring; 25. Semi-circular arc water inlet groove;

[0023] 3. Pressing ring;

[0024] 4. Packing material;

[0025] 5. Threaded ring;

[0026] 6. Gate valve; 61. Valve cover; 62. Pressure cap;

[0027] 7. Valve frame; 71. Extrusion groove; 72. Snap-fit ​​groove; 73. Valve port;

[0028] 8. Lower entry, upper exit passage;

[0029] 9. Snap-fit ​​sleeve. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0031] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be provided below with reference to relevant embodiments, and several embodiments of this utility model will be given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this utility model more thorough and complete.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] Example

[0035] like Figure 1-4 As shown, this embodiment provides a shut-off valve installation structure, including a valve stem 1 and a valve disc 2. The valve disc 2 is located at one end of the valve stem 1 and is used to control the flow of fluid. A sealing disc 21 is provided around the valve disc 2 to ensure that the fluid does not leak when the valve disc 2 is closed. A gasket 22 is provided in annularly at the edge of the end face away from the valve stem 1 to enhance the sealing effect. A snap-fit ​​ring 23 is provided in annularly on the end face of the sealing disc 21 on the inner side of the gasket 22 to facilitate snap-fit ​​and fixation with the corresponding structure inside the shut-off valve 6.

[0036] The guide column 24 is located at the center of the sealing disc 21, and a semi-circular water inlet groove 25 is opened on it to guide the fluid flow, reduce the impact of the fluid on the valve disc 2, and improve the durability of the valve. The guide column 24 is also provided with a rotating ring 241 near the bottom of its outer periphery, which allows the guide column 24 to move up and down and rotate with the valve stem 1 within a certain range.

[0037] A handwheel 11 is provided at the top of the valve stem 1, which allows the operator to manually rotate the valve stem 1 to control the opening and closing of the valve disc 2. A pressure ring 3 is provided near the top of the valve stem 1, and a packing 4 is fitted at the bottom of the pressure ring 3 to prevent fluid leakage from the gap between the valve stem 1 and the valve cover 61. A threaded ring 5 is provided on the outer periphery of the valve stem 1 near the valve disc 2 for threaded connection with other parts of the shut-off valve 6.

[0038] Rubber washers 221 are provided on both sides of the washer ring 22, and the outer ends of the rubber washers 221 on both sides are chamfered.

[0039] This embodiment also provides a shut-off valve. The shut-off valve 6 has valve frames 7 arranged vertically on both sides corresponding to the flanges at both ends, forming a bottom-inlet and top-outlet channel 8 to ensure that the fluid can pass through the valve smoothly. The top of the valve frame 7 has a squeezing groove 71 and a snap-fit ​​groove 72 respectively corresponding to the gasket ring 22 and the snap-fit ​​ring 23, so as to cooperate with the corresponding structure on the sealing disc 21. The semi-circular water inlet groove 25 is set towards the outlet direction of the bottom-inlet and top-outlet channel 8.

[0040] Specifically, a snap-fit ​​sleeve 9 is installed inside the shut-off valve 6 corresponding to the flow guide column 24. The flow guide column 24 is connected to the snap-fit ​​sleeve 9 by the rotating ring 241 to move up and down and rotate, so as to avoid the flow guide column 24 being affected by water pressure and ensure the stability of the valve disc 2 during the opening and closing process.

[0041] A valve port 73 is formed between the valve holders 7 to control the flow of fluid. The valve port 73 is adapted to the valve disc 2.

[0042] When the fluid passes through the valve port 73, it will first impact the valve frame 7 in the direction of the outlet flange, then turn back and squeeze into the semi-circular water inlet groove 25 in the lower part of the valve port 73. Subsequently, the fluid will be discharged directly towards the pipeline end through the upper end of the semi-circular water inlet groove 25 in the upper part of the valve port 73. This design effectively reduces the impact and wear of the fluid on the valve, and reduces the number of bends in the medium passage, thus reducing fluid resistance.

[0043] The gate valve 6 also includes a valve cover 61 and a pressure cap 62. The valve cover 61 is threaded and sealed to the top of the gate valve 6, while the pressure cap 62 is threaded to the top of the valve cover 61. The packing 4 is built between the valve cover 61 and the pressure cap 62 to prevent fluid leakage. The pressure ring 3 is located in the internal cavity of the pressure cap 62, while the threaded ring 5 is threaded to the valve cover 61 to fix the valve stem 1 and the entire valve disc 2 assembly.

[0044] The working process of this utility model is as follows: First, when using this shut-off valve 6 installation structure and shut-off valve 6, the operator first rotates the valve stem 1 through the handwheel 11, thereby driving the valve disc 2 to open or close within the valve port 73. When the valve disc 2 is closed, the gasket 22 and the snap ring 23 on the sealing disc 21 cooperate with the compression groove 71 and the snap groove 72 on the valve frame 7, respectively, to form a tight sealing structure and prevent fluid leakage. At the same time, the semi-circular water channel 25 on the guide column 24 can guide the fluid to pass smoothly through the valve port 73 when the valve disc 2 rises and the valve port 73 opens, reducing the impact and wear of the fluid on the valve.

[0045] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A stop valve mounting structure comprising a valve stem (1) and a valve disc (2), said valve disc (2) being located at one end of the valve stem (1), characterised in that: The outer periphery of the valve disc (2) is provided with a sealing disc (21), and the sealing disc (21) is annularly provided with a gasket ring (22) close to the edge away from the end face of the valve stem (1), the inner side of the gasket ring (22) is annularly provided with a clamping ring (23) on the end face of the sealing disc (21), the inner side of the clamping ring (23) is provided with a flow guide column (24) at the center of the sealing disc (21), a semicircular arc water guide groove (25) is formed on the flow guide column (24), and a rotating ring (241) is arranged at the bottom of the outer periphery of the flow guide column (24).

2. The installation structure of a globe valve according to claim 1, wherein: The top end of the valve stem (1) is provided with a hand wheel (11), the valve stem (1) is provided with a pressing ring (3) close to the top end, a packing (4) is sleeved at the bottom of the pressing ring, and a threaded ring (5) is arranged on the outer periphery of the valve stem (1) close to the valve disc (2).

3. The installation structure of a globe valve according to claim 1, wherein: The gasket ring (22) is provided with rubber gaskets (221) on both sides, and the outer ends of the rubber gaskets (221) on both sides are chamfered.

4. A stop valve characterized by: The stop valve (6) comprises the stop valve mounting structure of any one of claims 1-3, the stop valve (6) is internally provided with valve frames (7) staggered up and down on the corresponding two end flanges, the two end ports of the stop valve (6) are connected in communication through the valve frames (7) to form a down-up-out channel (8), the top end of the valve frame (7) is provided with an extrusion groove (71) and a clamping groove (72) corresponding to the gasket ring (22) and the clamping ring (23) respectively, and the semicircular arc water guide groove (25) is arranged towards the outlet direction of the down-up-out channel (8).

5. A stop valve according to claim 4, characterised in that: The clamping sleeve (9) is mounted in the stop valve (6) corresponding to the flow guide column (24), and the flow guide column (24) is movably and rotatably connected in the clamping sleeve (9) through the rotating ring (241).

6. A globe valve according to claim 4, wherein: The valve frames (7) form valve ports (73) therebetween, and the valve ports (73) are adapted to the valve disc (2).

7. A stop valve according to claim 6, characterised in that: The flow guide column (24) and the valve port (73) are hit by fluid through the valve port (73) towards the valve frame (7) of the outlet end flange, and then the fluid is turned back and extruded into the lower part of the semicircular arc water guide groove (25) of the valve port (73), and then directly discharged towards the pipeline end through the upper end of the upper part of the semicircular arc water guide groove (25) of the valve port (73).

8. A globe valve according to claim 4, wherein: The stop valve (6) comprises a valve cover (61) and a pressing cap (62), the valve cover (61) is threadedly connected and sealed at the top end of the stop valve (6), the pressing cap (62) is threadedly connected at the top end of the valve cover (61), the packing (4) is arranged between the valve cover (61) and the pressing cap (62), the pressing ring (3) is located in the inner chamber of the pressing cap (62), and the threaded ring (5) is threadedly connected with the valve cover (61).

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