A manual stop valve

Abstract

The utility model discloses a kind of manual stop valve, specifically related technical field of manual stop valve, including stop valve body, the stop valve body includes device cover, the device cover is fixedly installed with valve cover, the valve cover top is threadedly connected with valve stem, the valve stem is fixedly connected with handle at one end away from valve cover, the device cover one side is fixedly installed with connecting pipe;It further includes emergency cut-off mechanism for emergency fluid cut-off. Through the elasticity of spring A, baffle and the cooperation of components such as baffle, when baffle enters the inside of connecting pipe, by the elasticity of spring A, make spring A instantaneously push baffle, and then make the arc surface of baffle and the inner wall of pipeline mutually contact, so that the effect of quick response when needing emergency cut-off is achieved, to avoid material leakage.

Description

Technical Field

[0001] This utility model relates to the technical field of manual shut-off valves, and more specifically, to a manual shut-off valve. Background Technology

[0002] A manual shut-off valve is a valve that uses a handwheel to control the valve stem's movement, which in turn drives the valve core to move vertically, opening or closing the fluid passage. Its core function is to reliably cut off or connect the flow of media in the pipeline, ensuring that the system can be effectively shut off when isolation, maintenance, or regulation is required. Because the valve core uses a planar or conical sealing structure, it provides a good seal and low leakage when closed, making it particularly suitable for applications requiring high sealing performance, such as those involving steam, water, and oil. Furthermore, by partially opening the valve, a coarse flow regulation function can also be achieved. This valve has a simple structure, is easy to operate, and has low maintenance costs. It is widely used in pipeline systems in industries such as petroleum, chemical, and power, and is one of the fundamental components for ensuring system safety and control functions. A search revealed that publication number CN219994391U discloses a manual shut-off valve, including a valve seat with a through hole and a valve port, the through hole communicating with the valve port; a valve assembly movably disposed within the through hole, the valve assembly having a blocking end and a driving end positioned opposite each other, the blocking end corresponding to the valve port, and the valve assembly having a blocking position and an open position positioned opposite each other; and a valve cover detachably disposed at the end of the valve seat away from the valve port. When the valve assembly is in the blocking position, the blocking end blocks the valve port, and there is a gap between the driving end and the valve cover. When the valve assembly is in the open position, the blocking end is positioned away from the valve port, and the driving end abuts against the valve cover. The technical solution provided by this application can solve the problem in the prior art where hydrogen in the hydrogen storage cylinder is easily leaked when the manual shut-off valve is in the normally open state.

[0003] In the process of realizing this utility model, the inventors discovered the following problems with the prior art: The aforementioned manual shut-off valve, through the cooperation of parts such as the valve seat and valve assembly, can achieve the effect of sealing and blocking, but it is difficult to achieve a rapid sealing effect. As a result, it cannot respond quickly when an emergency shut-off is required, thus causing material leakage, which needs to be improved.

[0004] Therefore, a manual shut-off valve is proposed to address the above problems. Summary of the Invention

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a manual shut-off valve to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a manual shut-off valve, comprising a shut-off valve body, the shut-off valve body including a device sleeve, a valve cover fixedly mounted on the device sleeve, a valve stem threadedly connected to the top of the valve cover, a handle fixedly connected to the end of the valve stem away from the valve cover, and a connecting pipe fixedly mounted on one side of the device sleeve; further comprising an emergency shut-off mechanism for emergency fluid shut-off; and a limiting mechanism for limiting the emergency shut-off mechanism; the emergency shut-off mechanism including a baffle plate, one end of the baffle plate passing through the connecting pipe and slidably connected to the connecting pipe, and a spring telescopic rod fixedly connected to the top of the baffle plate.

[0007] Preferably, the emergency flow control mechanism further includes a spring A, a cavity is provided on one side of the baffle, the inner wall of the cavity is fixedly connected to the spring A, a partition is fixedly connected to the end of the spring A away from the cavity, a push plate is fixedly connected to the end of the baffle away from the connecting pipe, and a push block is fixedly connected to the side of the baffle close to the partition.

[0008] Preferably, there are two partitions, which are symmetrical about each other along the vertical central axis of the partition. The partitions are arc-shaped, and the through grooves on the connecting pipes are located on the displacement trajectory of the arc surface of the partitions.

[0009] Preferably, the limiting mechanism includes a gantry frame, which is fixedly installed on the circumferential surface of the connecting pipe. The top inner side of the gantry frame is fixedly connected to the end of the spring telescopic rod away from the guardrail. A sliding groove is provided on the inner side of the gantry frame. A spring B is fixedly connected to the inner wall of the sliding groove. A locking block is fixedly connected to the end of the spring B away from the inner wall of the sliding groove. A pull rod is fixedly connected to the end of the locking block near the spring B.

[0010] Preferably, the end of the pull rod away from the locking block passes through the gantry frame and is slidably connected to the gantry frame, while the end of the pull rod near the locking block passes through the inside of the spring B, and a slope is provided on one side of the locking block.

[0011] Preferably, the inclined surface of the locking block is located on the displacement trajectory of the push block, and there are two locking blocks, which are symmetrical to each other along the vertical central axis of the gantry. The above design is beneficial for limiting the push block by locking blocks.

[0012] Preferably, the end of the baffle away from the push plate is set to be arc-shaped, and the inner wall of the connecting pipe is located on the displacement trajectory of the baffle.

[0013] The technical effects and advantages of this utility model are as follows: Compared with existing technologies, this manual shut-off valve uses the elastic force of spring A, a baffle plate, and a partition plate to work together. When the baffle plate enters the connecting pipe, the elastic force of spring A pushes the partition plate instantly, causing the arc surface of the partition plate to contact the inner wall of the pipe. This achieves a rapid response when an emergency shut-off is needed, preventing material leakage.

[0014] Compared with existing technologies, this manual shut-off valve uses the force of the locking block to cooperate with components such as the gantry and spring telescopic rod. When the shut-off valve body is operating normally, the tension of spring B causes spring B to push the locking block out of the slide groove, thereby limiting the locking block to the push block, and thus keeping the baffle away from the inner wall of the connecting pipe, ensuring the flow of the pipeline when the valve body is operating normally. Attached Figure Description

[0015] Figure 1 This is a three-dimensional appearance structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional cross-sectional structural diagram of the connecting pipe of this utility model.

[0017] Figure 3 This is a cross-sectional three-dimensional structural diagram of the barrier section of this utility model.

[0018] Figure 4 This is a three-dimensional cross-sectional structural diagram of the gantry frame of this utility model.

[0019] Figure 5 In this utility model Figure 4 A 3D magnified view of A in the middle.

[0020] The attached figures are labeled as follows: 1. Shut-off valve body; 101. Device sleeve; 102. Valve cover; 103. Valve stem; 104. Handle; 105. Connecting pipe; 2. Emergency shut-off mechanism; 201. Baffle plate; 202. Cavity; 203. Spring A; 204. Partition plate; 205. Push plate; 206. Push block; 3. Limiting mechanism; 301. Gantry frame; 302. Spring telescopic rod; 303. Slide groove; 304. Spring B; 305. Locking block; 306. Pull rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1 (as attached) Figures 1 to 5The manual shut-off valve shown includes a shut-off valve body 1, which includes a device sleeve 101. A valve cover 102 is fixedly installed on the device sleeve 101. A valve stem 103 is threadedly connected to the top of the valve cover 102. A handle 104 is fixedly connected to the end of the valve stem 103 away from the valve cover 102. A connecting pipe 105 is fixedly installed on one side of the device sleeve 101. The valve also includes an emergency shut-off mechanism 2 for emergency fluid shut-off and a limiting mechanism 3 for limiting the emergency shut-off mechanism 2. The emergency shut-off mechanism 2 includes a baffle 201, one end of which passes through the connecting pipe 105 and is slidably connected to the connecting pipe 105. A spring telescopic rod 302 is fixedly connected to the top of the baffle 201.

[0023] In a preferred embodiment, the emergency flow control mechanism 2 further includes a spring A203. A cavity 202 is provided on one side of the baffle 201. The inner wall of the cavity 202 is fixedly connected to the spring A203. A partition 204 is fixedly connected to the end of the spring A203 away from the cavity 202. A push plate 205 is fixedly connected to the end of the baffle 201 away from the connecting pipe 105. A push block 206 is fixedly connected to the side of the baffle 201 close to the partition 204. The above design is conducive to quickly cutting off the fluid and preventing fluid leakage.

[0024] As a preferred embodiment, there are two partitions 204, which are symmetrical to each other along the vertical central axis of the baffle 201. The shape of the partition 204 is arc-shaped, and the through groove on the connecting pipe 105 is located on the displacement trajectory of the arc surface of the partition 204. The above design is beneficial to ensure the sealing of the connecting pipe 105 when it is cut off by the two partitions 204.

[0025] As a preferred embodiment, the end of the baffle 201 away from the push plate 205 is set to be arc-shaped, and the inner wall of the connecting pipe 105 is located on the displacement trajectory of the baffle 201. The above design is beneficial to ensure the sealing of the connecting pipe 105 when it is cut off by passing through the arc surface at the bottom of the baffle 201.

[0026] Specifically, the spring telescopic rod 302 rapidly releases its elastic potential energy, pushing the baffle 201 to quickly insert into the connecting pipe 105 in the horizontal direction. At the same time, the pre-compressed spring A203 in the cavity 202 on the side of the baffle 201 instantly extends, pushing the two arc-shaped partitions 204 to unfold to both sides, so that their arc surfaces tightly fit against the inner wall of the connecting pipe 105. Combined with the multiple sealing structure formed by the arc design at the front end of the baffle 201, the fluid channel is instantly and completely sealed. This linkage design ensures a rapid response in case of emergencies and effectively prevents the leakage of hazardous materials.

[0027] Example 2: Based on Example 1, the solution in Example 1 is further described in detail below with reference to the specific working method, such as... Figures 1 to 5 As shown below, see details: In a preferred embodiment, the limiting mechanism 3 includes a gantry 301, which is fixedly installed on the circumferential surface of the connecting pipe 105. The top inner side of the gantry 301 is fixedly connected to the end of the spring telescopic rod 302 away from the baffle 201. A sliding groove 303 is provided on the inner side of the gantry 301. A spring B304 is fixedly connected to the inner wall of the sliding groove 303. A locking block 305 is fixedly connected to the end of the spring B304 away from the inner wall of the sliding groove 303. A pull rod 306 is fixedly connected to the end of the locking block 305 near the spring B304. The above design is beneficial to limit the emergency shut-off mechanism 2 when the valve body is running normally, thus ensuring the flow of the connecting pipe 105.

[0028] In a preferred embodiment, the end of the pull rod 306 away from the locking block 305 passes through the gantry frame 301 and is slidably connected to the gantry frame 301. The end of the pull rod 306 near the locking block 305 passes through the inside of the spring B304. A slope is provided on one side of the locking block 305. The above design is beneficial to pull the locking block 305 away from the push block 206 by the pull rod 306, thereby releasing the limit on the emergency flow control mechanism 2.

[0029] In a preferred embodiment, the inclined surface of the locking block 305 is located on the displacement trajectory of the push block 206. There are two locking blocks 305, which are symmetrical to each other along the vertical central axis of the gantry frame 301. The above design is beneficial to limit the push block 206 by locking the locking block 305.

[0030] The working process of this utility model is as follows: Under normal working conditions, the spring B304 in the limiting mechanism 3 pushes the locking block 305 out of the slide groove 303, so that its inclined surface locks the push block 206 of the emergency interception mechanism 2, thereby restricting the movement of the baffle 201. At this time, the spring telescopic rod 302 is in a compressed state, and one end of the arc surface of the baffle 201 is away from the inner wall of the connecting pipe 105, ensuring smooth fluid flow. When emergency cutoff is required, the operator pulls the pull rod 306, which causes the locking block 305 to retract against the elastic force of the spring B304, releasing the limitation on the push block 206. Subsequently, the spring telescopic rod 302 quickly releases its elastic potential energy. The baffle 201 is pushed to be quickly inserted into the connecting pipe 105 in a horizontal direction. At the same time, the pre-compressed spring A203 in the cavity 202 on the side of the baffle 201 extends instantly, pushing the two arc-shaped baffles 204 to unfold to both sides, so that their arc surfaces fit tightly against the inner wall of the connecting pipe 105. Combined with the multi-seal structure formed by the arc design at the front end of the baffle 201, the fluid channel is instantly and completely sealed. This linkage design ensures a rapid response in case of emergencies and effectively prevents the leakage of hazardous materials. At the same time, the symmetrically arranged baffles 204 and locking blocks 305 maintain the stability of the action process.

[0031] The above describes the working principle of this type of manual shut-off valve.

Claims

1. A manual shut-off valve, comprising a shut-off valve body (1), characterized in that: The shut-off valve body (1) includes a device sleeve (101), on which a valve cover (102) is fixedly installed. A valve stem (103) is threadedly connected to the top of the valve cover (102). A handle (104) is fixedly connected to one end of the valve stem (103) away from the valve cover (102). A connecting pipe (105) is fixedly installed on one side of the device sleeve (101). It also includes an emergency shut-off mechanism (2) for emergency fluid shut-off; Limiting mechanism (3) is used to limit the emergency flow control mechanism (2); The emergency flow control mechanism (2) includes a baffle (201), one end of which passes through the connecting pipe (105) and is slidably connected to the connecting pipe (105). A spring telescopic rod (302) is fixedly connected to the top of the baffle (201).

2. A manual shut-off valve according to claim 1, characterized in that: The emergency flow control mechanism (2) also includes a spring A (203). A cavity (202) is provided on one side of the baffle (201). The inner wall of the cavity (202) is fixedly connected to the spring A (203). A partition (204) is fixedly connected to the end of the spring A (203) away from the cavity (202). A push plate (205) is fixedly connected to the end of the baffle (201) away from the connecting pipe (105). A push block (206) is fixedly connected to the side of the baffle (201) close to the partition (204).

3. A manual shut-off valve according to claim 2, characterized in that: There are two partitions (204), which are symmetrical to each other along the vertical central axis of the baffle (201). The shape of the partition (204) is arc-shaped, and the through groove on the connecting pipe (105) is located on the displacement trajectory of the arc surface of the partition (204).

4. A manual shut-off valve according to claim 1, characterized in that: The limiting mechanism (3) includes a gantry frame (301), which is fixedly installed on the circumferential surface of the connecting pipe (105). The top inner side of the gantry frame (301) is fixedly connected to the end of the spring telescopic rod (302) away from the baffle (201). A sliding groove (303) is provided on the inner side of the gantry frame (301). A spring B (304) is fixedly connected to the inner wall of the sliding groove (303). A locking block (305) is fixedly connected to the end of the spring B (304) away from the inner wall of the sliding groove (303). A pull rod (306) is fixedly connected to the end of the locking block (305) near the spring B (304).

5. A manual shut-off valve according to claim 4, characterized in that: The end of the pull rod (306) away from the locking block (305) passes through the gantry frame (301) and is slidably connected to the gantry frame (301). The end of the pull rod (306) near the locking block (305) passes through the inside of the spring B (304). A slope is provided on one side of the locking block (305).

6. A manual shut-off valve according to claim 4, characterized in that: The inclined surface of the card block (305) is located on the displacement trajectory of the push block (206). There are two card blocks (305), and they are symmetrical to each other along the vertical central axis of the gantry frame (301).

7. A manual shut-off valve according to claim 1, characterized in that: The end of the baffle (201) away from the push plate (205) is set to be arc-shaped, and the inner wall of the connecting pipe (105) is located on the displacement trajectory of the baffle (201).

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