Non-return self-locking stop valve

Abstract

The utility model relates to the technical field of stop valves, in particular to a non-return self-locking stop valve. The exhaust valve comprises a valve body, a communicating assembly and an exhaust assembly, the valve body comprises a stop frame part, communicating pipe parts communicating with the two ends of the stop frame part respectively and a control frame part communicating with the top end of the stop frame part, a control assembly is detachably arranged on the control frame part, the stop frame part is provided with a stop cavity, and two sealing rings and a partition plate are arranged on the stop frame part; the partition plate is located between the two sealing rings, and the two sealing rings abut against the communicating pipe part. The communicating assembly comprises a drainage frame communicating with the communicating pipe part, a control frame arranged on the drainage frame in a sliding mode, and a water supply pipe with the two ends communicating with the drainage frame and the stop frame part correspondingly. The exhaust assembly communicates with the valve body and the communicating assembly. The inner space of the stop cavity is filled with water flow through the communication assembly and the exhaust assembly, so that the situation that the service life of the stop valve is shortened due to the fact that the control assembly reacts with oxygen is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of stop valves, in particular to a non-return self-locking stop valve. Background Art

[0002] Globe valves are the most widely used type of valve due to their low friction between sealing surfaces during opening and closing, durability, low opening height, ease of manufacture, and convenient maintenance. Globe valves are suitable for both low- and medium-pressure environments, as well as high-pressure environments. Their closing principle relies on stem pressure to tightly fit the disc and seat sealing surfaces, preventing the flow of media.

[0003] Chinese patent publication number CN216009745U discloses a self-locking, non-returnable stop valve comprising a valve body with connection ports on either side. A valve cover is fixedly connected to the center of the upper end of the valve body, a packing is fixedly mounted to the upper end of the valve cover, and a valve stem is rotatably connected to the upper end of the packing. The lower end of the valve stem extends into the valve body and is coaxially fixedly connected to the valve disc. The portion of the valve stem within the valve cover is fixedly connected to a sealing gasket, and the upper end of the valve stem extends above the packing and is fixedly connected to a rotating seat. This technical solution provides a locking pin hole, a locking mechanism, and a fixing mechanism. When the operator rotates the valve stem to drive the valve disc and close the valve body, the sliding block can be pushed upward, effectively preventing the rotation of the wrench and the valve stem, ensuring that the sealing of the valve body is not affected.

[0004] However, the above technical solution has the following problems: when the valve body is used, when the valve is closed, some liquid will remain inside the valve body, and the liquid will react with the gas in the valve body through oxidation, etc., resulting in the service life of the valve core being far lower than the theoretical life due to long-term oxidation. Utility Model Content

[0005] The purpose of the utility model is to address the problems existing in the background technology and propose a non-return self-locking stop valve which uses a connecting component and an exhaust component to fill the space inside the stop chamber with water flow, thereby avoiding the reaction between the control component and oxygen and thus reducing the service life of the stop valve.

[0006] The technical solution of the utility model is a non-return self-locking stop valve, comprising: a valve body, which includes a stop frame, a connecting pipe portion connected at each end of the stop frame, and a control frame portion connected to the top end of the stop frame; a control component is detachably provided on the control frame, the stop frame has a stop chamber, two sealing rings and a partition plate are provided on the stop frame, the partition plate is located between the two sealing rings, and the two sealing rings abut against the connecting pipe portion; a connecting component, which includes a drainage frame connected to the connecting pipe portion, a control frame slidably arranged on the drainage frame, and a water supply pipe whose two ends are respectively connected to the drainage frame and the stop frame portion; an exhaust component, which is connected to the valve body and the connecting component.

[0007] Preferably, the control assembly includes an adjustment frame detachably arranged at the top end of the cut-off frame, a driving cylinder rotatably arranged on the adjustment frame, a driving wheel coaxially arranged on the driving cylinder, a threaded rod threadedly connected to the driving cylinder, and a valve core arranged on the threaded rod; the valve core is in sliding contact with the sealing ring and the partition plate.

[0008] Preferably, the adjustment frame includes a flange portion provided on the valve body, and a driving cylinder portion provided on the flange portion, the threaded rod has a guide groove, the flange portion has a guide plate portion, and the guide plate portion is located in the guide groove.

[0009] Preferably, the control frame includes a closed cover portion abutting against the drainage frame, a plurality of connecting rod portions arranged along a ring at the bottom end of the closed cover portion, and a driving ring portion slidingly arranged on the drainage frame; the driving ring portion is connected to the plurality of connecting rod portions.

[0010] Preferably, the exhaust assembly includes a telescopic rod slidably arranged on the valve body and the control assembly, a closing cover rotatably arranged on the telescopic rod, and a blocking column arranged on the end surface of the telescopic rod; the closing cover is threadedly connected to the valve body.

[0011] Preferably, the blocking column is in the shape of a hollow truncated cone.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects:

[0013] When the utility model is used, the user uses the control component to let the stop valve cut off the water flow, and then the user opens the exhaust component and pushes the drainage rack upwards to let the water flow through the drainage rack and the water supply pipe into the stop chamber. The partition plate divides the stop chamber into two parts, and the water in the two connecting pipe parts flows into different places in the stop chamber respectively without interfering with each other. When the water flow inside the stop chamber is gradually full, the user closes the exhaust component to let the part of the control component located inside the stop chamber be soaked in water, so as to avoid the control component from being in contact with oxygen and moisture at the same time, which may reduce the service life of the control component. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of an embodiment of the present utility model;

[0015] Figure 2 A cross-sectional view of an embodiment of the present utility model;

[0016] Figure 3 This is a structural diagram of the sealing ring and the partition plate in the embodiment of the present utility model;

[0017] Figure 4 This is a schematic structural diagram of the connecting components in an embodiment of the present utility model;

[0018] Figure 5It is a partial schematic diagram of an embodiment of the utility model;

[0019] Figure 6 Schematic diagram of the structure of the valve core and the threaded rod in the embodiment of the present utility model.

[0020] Figure markings: 1. valve body; 11. shut-off frame; 111. shut-off chamber; 12. connecting pipe; 121. connecting chamber; 13. control frame; 2. adjusting frame; 21. flange; 22. driving cylinder; 3. driving wheel; 4. driving cylinder; 5. threaded rod; 51. guide groove; 6. valve core; 7. sealing ring; 8. partition plate; 9. connecting assembly; 91. drain frame; 92. control frame; 921. closing cover; 922. connecting rod; 923. driving ring; 93. water supply pipe; 10. exhaust assembly; 101. closing cover; 102. telescopic rod; 103. blocking column. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figures 1-6 As shown, a non-return self-locking stop valve proposed in this embodiment includes a valve body 1, a connecting component 9 and an exhaust component 10, the valve body 1 includes a stop frame 11, a connecting pipe portion 12 connected at both ends of the stop frame 11, and a control frame portion 13 connected to the top of the stop frame 11; the control frame portion 13 is detachably provided with a control component, the stop frame 11 has a stop chamber 111, and the connecting pipe portion 12 has a connecting chamber 121, two sealing rings 7 and a partition plate 8 are provided on the stop frame 11, the partition plate 8 is located between the two sealing rings 7, and the two sealing rings 7 are in contact with the connecting pipe portion 12; the connecting component 9 includes a drainage frame 91 connected to the connecting pipe portion 12, a control frame 92 slidably arranged on the drainage frame 91, and a water supply pipe 93 whose two ends are respectively connected to the drainage frame 91 and the stop frame 11; the two ends of the exhaust component 10 are respectively connected to the stop chamber 111 and the connecting chamber 121.

[0023] The control frame 92 includes a closed cover portion 921 that abuts against the drain frame 91, a plurality of connecting rod portions 922 arranged along a ring at the bottom end of the closed cover portion 921, and a driving ring portion 923 that is damped and slidably arranged on the drain frame 91; the driving ring portion 923 is connected to the plurality of connecting rod portions 922. When the water pressure inside the connecting pipe portion 12 is large and needs to be discharged, the user can push the driving ring portion 923 to allow the connecting rod portion 922 to drive the closed cover portion 921 away from the drain frame 91, so as to allow part of the water flow to be diverted through the drain frame 91, thereby improving the versatility of the stop valve.

[0024] When using this embodiment, the user uses the control component to let the stop valve cut off the water flow, and then the user opens the exhaust component and pushes the drainage rack 91 upward to allow the water to flow through the drainage rack 91 and the water supply pipe 93 into the stop chamber 111. The partition plate 8 divides the stop chamber 111 into two parts, and the water in the two connecting pipe parts 12 flows into different places in the stop chamber 111 respectively without interfering with each other. When the water flow inside the stop chamber 111 is gradually full, the user closes the exhaust component 10 to let the part of the control component located inside the stop chamber 111 be soaked in water, so as to avoid the control component from being in contact with oxygen and moisture at the same time, which may reduce the service life of the control component.

[0025] Example 2

[0026] like Figure 1 、 Figure 2 、 Figure 3 and Figure 6 As shown, a non-return self-locking stop valve proposed in this embodiment, compared with embodiment 1, in this embodiment, the control component includes an adjusting frame 2 detachably arranged at the top of the stop frame part 11, a driving cylinder 4 rotatably arranged on the adjusting frame 2, a driving wheel 3 coaxially arranged on the driving cylinder 4, a threaded rod 5 threadedly connected to the driving cylinder 4, and a valve core 6 arranged on the threaded rod 5; the valve core 6 is in sliding contact with the sealing ring 7 and the partition plate 8, and the user manually drives the driving wheel 3 to drive the driving cylinder 4 to rotate. During the rotation, the driving cylinder 4 drives the threaded rod 5 to move according to user needs, thereby controlling the start and stop of the stop valve or the flow rate of water.

[0027] The adjusting frame 2 includes a flange portion 21 arranged on the valve body 1, and a driving cylinder portion 22 arranged on the flange portion 21; the threaded rod 5 has a guide groove 51, and the flange portion 21 has a guide plate portion, which is located in the guide groove 51. When the threaded rod 5 is raised or lowered, the driving cylinder 4 rotates to provide a lifting force for the threaded rod 5. The guide plate portion is in sliding contact with the threaded rod 5 to prevent the threaded rod 5 from rotating, and the friction between the guide plate portion and the threaded rod 5 prevents the valve core 6 from moving easily under the action of water flow.

[0028] Example 3

[0029] like Figure 5 As shown, a non-return self-locking stop valve proposed in this embodiment, compared with embodiment 1, in this embodiment, the exhaust component 10 includes a telescopic rod 102 slidably arranged on the valve body 1 and the control component, a closing cover 101 rotatably arranged on the telescopic rod 102, and a blocking column 103 arranged on the end face of the telescopic rod 102; the closing cover 101 is threadedly connected to the valve body 1, and the blocking column 103 is in the shape of a hollow cone.

[0030] When using this embodiment, the user unscrews the closing cover 101 from the valve body 1, pulls the closing cover 101 to stretch the telescopic rod 102 to its longest length, and then, as the water gradually flows into the cut-off chamber 111, the blocking column 103 rises along with the horizontal plane under the action of buoyancy until the blocking column 103 abuts against the top of the cut-off chamber 111. Then, the user threadably connects the closing cover 101 to the valve body 1 to seal the inside of the cut-off chamber 111, thereby preventing the valve core 6 inside the cut-off chamber 111 from coming into contact with oxygen for oxidation reaction.

[0031] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. A non-return self-locking stop valve, characterized in that: include: The valve body (1) comprises a cut-off frame (11), a connecting pipe (12) connected at each end of the cut-off frame (11), and a control frame (13) connected to the top end of the cut-off frame (11); a control assembly is detachably provided on the control frame (13); the cut-off frame (11) has a cut-off cavity (111); two sealing rings (7) and a partition plate (8) are provided on the cut-off frame (11); the partition plate (8) is located between the two sealing rings (7), and the two sealing rings (7) are in contact with the connecting pipe (12); A connecting assembly (9) comprising a drainage frame (91) connected to the connecting pipe portion (12), a control frame (92) slidably arranged on the drainage frame (91), and a water supply pipe (93) with two ends respectively connected to the drainage frame (91) and the cut-off frame portion (11); The exhaust component (10) is connected to the valve body (1) and the communication component (9).

2. A non-return self-locking stop valve according to claim 1, characterized in that: The control assembly comprises an adjustment frame (2) detachably arranged at the top end of a cut-off frame portion (11), a driving cylinder (4) rotatably arranged on the adjustment frame (2), a driving wheel (3) coaxially arranged on the driving cylinder (4), a threaded rod (5) threadedly connected to the driving cylinder (4), and a valve core (6) arranged on the threaded rod (5); the valve core (6) is in sliding contact with a sealing ring (7) and a partition plate (8).

3. A non-return self-locking stop valve according to claim 2, characterized in that: The regulating frame (2) comprises a flange portion (21) arranged on the valve body (1) and a driving cylinder portion (22) arranged on the flange portion (21); the threaded rod (5) has a guide groove (51), and the flange portion (21) has a guide plate portion, which is located in the guide groove (51).

4. A non-return self-locking stop valve according to claim 3, characterized in that: The control frame (92) comprises a closed cover portion (921) abutting against the drainage frame (91), a plurality of connecting rod portions (922) arranged along a ring at the bottom end of the closed cover portion (921), and a driving ring portion (923) arranged on the drainage frame (91) for damping sliding; the driving ring portion (923) is connected to the plurality of connecting rod portions (922).

5. The non-return self-locking stop valve according to claim 1, characterized in that: The exhaust assembly (10) comprises a telescopic rod (102) slidably arranged on the valve body (1) and the control assembly, a closing cover (101) rotatably arranged on the telescopic rod (102), and a blocking column (103) arranged on the end surface of the telescopic rod (102); the closing cover (101) is threadedly connected to the valve body (1).

6. A non-return self-locking stop valve according to claim 5, characterized in that: The blocking column (103) is in the shape of a hollow truncated cone.

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