Gas safety self-closing valve limiting cover

Abstract

The utility model relates to gas technical field discloses a kind of gas safety self-closing valve limit cap, including yellow pull button, the inner wall of yellow pull button is provided with red center button, the upper inner wall of yellow pull button is provided with supporting mechanism;The supporting mechanism includes the accommodating block of fixed connection in the upper inner wall of yellow pull button, the inner wall of accommodating block is elastically connected with reset plate by elastic member, the upper fixed connection of reset plate has movable plate, the bottom fixed connection of support rod has support column, the upper inner wall of red center button is provided with positioning assembly.In the utility model, when needing to clean self-closing valve, rotate the support rod on red center button, support column extrude movable plate bevel and make reset plate slide down and compress connecting spring, until support column enters accommodating block accommodating groove, let yellow pull button and red center button keep stable and do not move, avoid limit cap accidental sliding when cleaning triggers self-closing valve malfunction.

Description

Technical Field

[0001] This utility model relates to the field of gas technology, and in particular to a gas safety self-closing valve limit cover. Background Technology

[0002] A gas safety self-closing valve is a safety protection device installed in a household or industrial gas pipeline system and connected to gas appliances such as gas stoves and water heaters. It can automatically open and close the valve based on changes in gas pressure to prevent gas leakage. Its core function revolves around safety protection after abnormal gas pressure (overpressure, underpressure) and accidental gas interruption. It usually uses a mechanical structure to drive the valve core, without the need for external power supply or manual intervention, and can monitor the pressure status in the gas pipeline in real time.

[0003] When the gas pressure in the pipeline exceeds the safety threshold (e.g., due to overpressure caused by a pressure regulating valve malfunction) or falls below the normal operating pressure (e.g., due to underpressure caused by pipeline leakage), the self-closing valve can quickly and automatically close the valve core, cutting off the gas supply. Once the gas pressure returns to normal and there is no risk of leakage, the user can manually lift or rotate the self-closing valve limit cover to reset the valve core and restore normal gas delivery.

[0004] Currently, most gas safety self-closing valve limit covers on the market adopt an integrated fixed structure. When the valve body needs to be cleaned, the lifting knob and central component of the traditional limit cover lack a stable positioning support structure. It is easy to move with the slightest touch, which requires additional manual fixing of the limit cover during the cleaning process. This not only increases the cumbersomeness of the operation, but also causes the self-closing valve to malfunction due to accidental sliding of the limit cover, affecting the cleaning efficiency. Therefore, a gas safety self-closing valve limit cover is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a gas safety self-closing valve limit cover, which aims to improve the problem that in the prior art, when cleaning the self-closing valve, additional manual fixing is required, which not only increases the cumbersomeness of operation, but also triggers the self-closing valve to malfunction and affects the cleaning efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a gas safety self-closing valve limit cover, including a yellow lifting button, a red center button provided on the inner wall of the yellow lifting button, and a support mechanism provided on the upper inner wall of the yellow lifting button;

[0007] The support mechanism includes a receiving block fixedly connected to the inner wall of the upper part of the yellow lifting button. A reset plate is elastically connected to the inner wall of the receiving block through an elastic element. A movable plate is fixedly connected to the upper part of the reset plate. A rotating column is rotatably connected to the inner wall of the upper part of the red center button. A support rod is fixedly connected to the side of the rotating column near the receiving block. A support column is fixedly connected to the bottom of the support rod. A positioning component is provided on the inner wall of the upper part of the red center button.

[0008] As a further description of the above technical solution:

[0009] The elastic element includes a connecting spring, one end of which is fixedly connected to the bottom of the reset plate, and the other end of which is fixedly connected to the bottom inner wall of the receiving block.

[0010] As a further description of the above technical solution:

[0011] The outer wall of the reset plate is slidably connected to the inner wall of the receiving block, and the outer wall of the movable plate is slidably connected to the lower inner wall of the receiving block.

[0012] As a further description of the above technical solution:

[0013] The movable plate has an inclined surface on the side near the support rod.

[0014] As a further description of the above technical solution:

[0015] The receiving block has a receiving groove on the side facing the support rod, and the inner wall of the receiving groove is larger than the outer arc surface of the support column.

[0016] As a further description of the above technical solution:

[0017] The rotational position of the support rod and the position of the receiving block are offset in the vertical direction.

[0018] As a further description of the above technical solution:

[0019] The positioning component includes a positioning ring fixedly connected to the upper inner wall of the red center button. A rubber ball is fixedly connected to the inner arc surface of the positioning ring. The inner arc surface of the positioning ring matches the outer arc surface of the rotating column, and the outer surface of the rubber ball is in contact with the outer arc surface of the rotating column.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, through the cooperation between the yellow lifting button, the red center button and their supporting mechanism, when the self-closing valve needs to be cleaned, the support rod on the red center button is rotated. The support column presses against the inclined surface of the movable plate, causing the reset plate to slide down and compress the connecting spring until the support column enters the receiving groove of the receiving block. This keeps the yellow lifting button and the red center button stable and does not move, avoiding the risk of the limit cover accidentally sliding and triggering the self-closing valve to malfunction, and significantly improving cleaning efficiency and operational safety.

[0022] 2. In this utility model, through the cooperation between the positioning components and other structures, after cleaning, the support rod is reset to a horizontal state and fixed by a rubber ball, so as not to affect the normal reset and closure of the self-closing valve. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a gas safety self-closing valve limit cover proposed in this utility model.

[0024] Figure 2 A cross-sectional internal schematic diagram of the yellow lifting button and the red center button of the gas safety self-closing valve limit cover proposed in this utility model.

[0025] Figure 3 This is a cross-sectional internal schematic diagram of the receiving block of the gas safety self-closing valve limit cover proposed in this utility model.

[0026] Figure 4 This is a schematic diagram showing the disassembled rotating column and positioning ring of the limiting cover of a gas safety self-closing valve proposed in this utility model.

[0027] Legend:

[0028] 1. Yellow lifting button; 2. Red center button; 3. Support mechanism; 301. Support rod; 302. Receiving block; 303. Support column; 304. Connecting spring; 305. Reset plate; 306. Movable plate; 307. Rotating column; 4. Positioning assembly; 401. Positioning ring; 402. Rubber ball. Detailed Implementation

[0029] 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.

[0030] Reference Figures 1-2This utility model provides an embodiment of a gas safety self-closing valve limiting cover, including a yellow lifting button 1. The yellow lifting button 1 serves as the external operating component of the limiting cover and is made of high-toughness plastic material, which is convenient for operators to grasp and pull, and can withstand the normal temperature environment around the gas pipeline. A red center button 2 is provided on the inner wall of the yellow lifting button 1. The red center button 2 contrasts with the yellow lifting button 1 in color, which can help users quickly identify the core operating component. At the same time, its size is slightly smaller than the inner wall of the yellow lifting button 1, ensuring that there is a reasonable gap for movement after the two are assembled. A support mechanism 3 is provided on the upper inner wall of the yellow lifting button 1. The setting of the support mechanism 3 ensures that the yellow lifting button 1 and the red center button 2 will not move when the operator cleans the self-closing valve.

[0031] Reference Figures 2-4 The support mechanism 3 includes a receiving block 302 fixedly connected to the upper inner wall of the yellow lifting button 1. The receiving block 302 has a hollow structure, thus providing space for the installation of subsequent components. A reset plate 305 is elastically connected to the inner wall of the receiving block 302 via an elastic element. The elastic element can drive the reset plate 305 to automatically reset within the receiving block 302. A movable plate 306 is fixedly connected to the upper part of the reset plate 305. The reset plate 305 and the movable plate 306 are fixed by welding or integral molding process to ensure synchronous movement of the two, improve structural stability, and the movable plate 306 is provided with two sets, one on the red center button 2. A rotating column 307 is rotatably connected to the inner wall of the part. The rotating setting facilitates connection and fixation. A support rod 301 is fixedly connected to the side of the rotating column 307 near the receiving block 302. The support rod 301 is made of metal and has a strong load-bearing capacity. A support column 303 is fixedly connected to the bottom of the support rod 301. The support column 303 is set perpendicular to the support rod 301, which can reduce wear when in contact with other parts. A positioning component 4 is provided on the upper inner wall of the red center button 2. The positioning component 4 can limit the rotation angle of the rotating column 307 to prevent the rotating column 307 from rotating excessively and causing structural failure.

[0032] Reference Figures 2-4 The elastic element includes a connecting spring 304, which is made of corrosion-resistant stainless steel to prevent rusting caused by long-term contact with air or slight moisture, thus extending its service life. One end of the connecting spring 304 is fixedly connected to the bottom of the reset plate 305, and the other end of the connecting spring 304 is fixedly connected to the bottom inner wall of the receiving block 302. The connecting spring 304 is fixed by spot welding to ensure a firm connection that will not fall off.

[0033] Reference Figures 2-4 The outer wall of the reset plate 305 is slidably connected to the inner wall of the receiving block 302. The sliding arrangement avoids movement interference. The outer wall of the movable plate 306 is through and slidably connected to the lower inner wall of the receiving block 302. The through arrangement makes it convenient for manual downward movement of the movable plate 306, thereby allowing the support column 303 to be removed.

[0034] Reference Figures 2-4 The movable plate 306 has an inclined surface on the side near the support rod 301. The inclined surface makes the contact between the support rod 301 and the movable plate 306 smoother when rotating, avoiding hard collisions that could damage the components. At the same time, the inclined surface also facilitates the contact and compression of the support column 303. The receiving block 302 has a receiving groove on the side facing the support rod 301. The inner wall of the receiving groove is larger than the outer arc surface of the support column 303. The depth of the receiving groove is adapted to the length of the support column 303, ensuring that the support column 303 can fully enter the receiving groove when rotating. The receiving groove provides sufficient rotation space for the support column 303, avoiding friction and jamming between the support column 303 and the inner wall of the receiving groove. The rotation position of the support rod 301 and the position of the receiving block 302 are vertically offset. The offset setting ensures that when the yellow lifting button 1 and the red center button 2 are in the closed state, it does not affect normal closure.

[0035] Reference Figure 4 The positioning component 4 includes a positioning ring 401 fixedly connected to the upper inner wall of the red center button 2. This fixed setting prevents detachment. A rubber ball 402 is fixedly connected to the inner arc surface of the positioning ring 401. The rubber ball 402 is fixed to the inner arc surface of the positioning ring 401 by spot welding. The number of rubber balls 402 can be set to multiple according to actual needs and they are evenly distributed on the inner arc surface of the positioning ring 401. The inner arc surface of the positioning ring 401 matches the outer arc surface of the rotating column 307. This matching setting allows the rotating column 307 to rotate. The outer surface of the rubber ball 402 contacts the outer arc surface of the rotating column 307. The rubber ball 402 forms friction with the surface of the rotating column 307 through its own elasticity, which finely adjusts and limits the rotation angle of the rotating column 307, keeping the rotating column 307 stable at a specific angle position and improving the operational accuracy of the limiting cover.

[0036] Working principle: When the yellow lifting button 1 and the red center button 2 are in normal working condition, the support rod 301 is vertically misaligned with the receiving block 302, which does not affect their normal closure. When the self-closing valve needs to be cleaned, the support rod 301 on the upper inner wall of the red center button 2 is rotated. The rubber ball 402 on the inner arc surface of the positioning ring 401 in the positioning assembly 4 forms friction with the surface of the rotating column 307 through its own elasticity, which finely adjusts and limits the rotation angle of the rotating column 307 to ensure that it rotates stably to the target position. The support rod 301 and the bottom support column 303 rotate synchronously. The support column 303 gradually approaches the receiving block 302 and contacts the inclined surface of the movable plate 306. As the rotation continues, the support column 303 presses against the inclined surface, causing the movable plate 306 to drive the reset plate 305 against the inner wall of the receiving block 302. Slide down while pressing the connecting spring 304 until the support column 303 is fully inserted into the receiving groove of the receiving block 302. At this time, the support column 303 will not contact the movable plate 306. Due to the elasticity of the connecting spring 304, the movable plate 306 is reset, thereby fixing the support column 303 and keeping the yellow lifting button 1 and the red center button 2 fixed and immobile, making it convenient for the staff to clean the self-closing valve. After cleaning, move the movable plate 306 down to open the receiving block 302, and then rotate the rotating column 307 in the opposite direction. The support column 303 will disengage from the receiving groove. At the same time, rotate the support rod 301 to a horizontal state. Then, the friction of the rubber ball 402 will fix the rotating column 307. The rotating column 307 in the horizontal state will not affect the normal operation and reset of the yellow lifting button 1 and the red center button 2.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A gas safety self-closing valve limit cover, comprising a yellow lifting button (1), characterized in that: The inner wall of the yellow lifting button (1) is provided with a red center button (2), and the upper inner wall of the yellow lifting button (1) is provided with a support mechanism (3); The support mechanism (3) includes a receiving block (302) fixedly connected to the upper inner wall of the yellow lifting button (1). The inner wall of the receiving block (302) is elastically connected to a reset plate (305) through an elastic element. The upper part of the reset plate (305) is fixedly connected to a movable plate (306). The upper inner wall of the red center button (2) is rotatably connected to a rotating column (307). The side of the rotating column (307) near the receiving block (302) is fixedly connected to a support rod (301). The bottom of the support rod (301) is fixedly connected to a support column (303). The upper inner wall of the red center button (2) is provided with a positioning component (4).

2. The gas safety self-closing valve limit cover according to claim 1, characterized in that: The elastic element includes a connecting spring (304), one end of which is fixedly connected to the bottom of the reset plate (305), and the other end of which is fixedly connected to the bottom inner wall of the receiving block (302).

3. The gas safety self-closing valve limit cover according to claim 1, characterized in that: The outer wall of the reset plate (305) is slidably connected to the inner wall of the receiving block (302), and the outer wall of the movable plate (306) is slidably connected to the lower inner wall of the receiving block (302).

4. The gas safety self-closing valve limit cover according to claim 1, characterized in that: The movable plate (306) has an inclined surface on the side near the support rod (301).

5. The gas safety self-closing valve limit cover according to claim 1, characterized in that: The receiving block (302) has a receiving groove on the side facing the support rod (301), and the inner wall of the receiving groove is larger than the outer arc surface of the support column (303).

6. The gas safety self-closing valve limit cover according to claim 1, characterized in that: The rotational position of the support rod (301) and the position of the receiving block (302) are vertically offset.

7. The gas safety self-closing valve limit cover according to claim 1, characterized in that: The positioning component (4) includes a positioning ring (401) fixedly connected to the upper inner wall of the red center button (2). A rubber ball (402) is fixedly connected to the inner arc surface of the positioning ring (401). The inner arc surface of the positioning ring (401) matches the outer arc surface of the rotating column (307). The outer surface of the rubber ball (402) is in contact with the outer arc surface of the rotating column (307).

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