Adjusting type stop valve

Abstract

The utility model discloses an adjusting type stop valve which comprises a stop valve seat, an installation seat is fixedly arranged at the end of the stop valve seat, an executing mechanism is installed on the surface of the upper side of the stop valve seat and comprises a valve rod outer barrel, the bottom of the valve rod outer barrel is communicated with the stop valve seat, and a connecting seat is installed at the top of the valve rod outer barrel. A mounting barrel is mounted at the end, away from the valve rod outer barrel, of the connecting seat, a knob switch is arranged on the upper side of the mounting barrel, and a driving seat is fixedly connected to the bottom of the knob switch. According to the adjusting type stop valve, when the stop valve seat needs to be opened or closed through the valve rod, the knob switch is directly rotated at the moment, the valve rod cannot be rotated, an operator can be forcibly required to follow a specific process, press firstly, confirm the state or meet preconditions, and safety accidents caused by mistaken touch or misjudgment are reduced; accidental opening and closing caused by accidental touch or mistaken rotation of the hand wheel are avoided; the method is suitable for dangerous media or key processes, and manual operation risks are reduced.

Description

Technical Field

[0001] This utility model relates to the field of gate valves, specifically a regulating gate valve. Background Technology

[0002] Gate valves, also called stop valves, are the most widely used type of valve. Their popularity stems from the low friction between the sealing surfaces during opening and closing, resulting in durability. They also have a small opening height, are easy to manufacture and maintain, and are suitable for both low and medium pressures as well as high pressures. The closing principle of a gate valve relies on the pressure of the valve stem to ensure a tight seal between the valve disc sealing surface and the valve seat sealing surface, preventing the flow of media. Gate valves are classified according to the position of the valve stem thread: external thread type and internal thread type. The positions of the valve stem threads are as follows: 1) External thread gate valve: The valve stem thread is outside the valve body. Its advantage is that the valve stem is not corroded by the media and is easy to lubricate; this structure is commonly used. 2) Internal thread gate valve: The valve stem thread is inside the valve body. In this structure, the valve stem thread is in direct contact with the media, making it susceptible to corrosion and unable to be lubricated. This structure is used in small-diameter and low-temperature applications. Therefore, existing gate valves generally have exposed valve stems, forming open valves, which are inconvenient to use and aesthetically unappealing. Conversely, existing closed valves are susceptible to corrosion, affecting their service life.

[0003] To solve the above problems, after searching, Chinese patent with publication number CN202732995U was found, which discloses a regulating shut-off valve, which includes an internally threaded valve core insert and a PP-R valve body. The internally threaded valve core insert and the PP-R valve body are integrally injection molded. One end of the internally threaded valve core insert is provided with multiple fixing posts embedded in the PP-R valve body, and the other end is connected to the internally threaded handle through a contraction regulator to form a closed valve.

[0004] Although the above-mentioned device is composed of a PP-R valve body and a valve core insert, with the internally threaded valve core insert and the PP-R valve body integrally injection molded, and the internally threaded valve core connected to the internally threaded handle through a shrinkage regulator to form a concealed valve, the structure is compact, with good water tightness and air tightness, easy installation and use, and long service life. However, in actual use, the shut-off valve is not equipped with anti-misoperation components, which can easily lead to accidental opening and closing due to accidental contact or accidental turning of the handwheel. This is especially true when used with hazardous media (such as toxic or flammable substances) or critical processes (such as power plants and chemical plants), increasing the risk of human error. Utility Model Content

[0005] The purpose of this invention is to provide a regulating shut-off valve to solve the defects mentioned in the background art.

[0006] To achieve the above objectives, a regulating gate valve is provided, including a gate valve seat. A mounting seat is fixedly provided at the end of the gate valve seat. An actuator is mounted on the upper surface of the gate valve seat. The actuator includes a valve stem outer cylinder whose bottom communicates with the gate valve seat. A connecting seat is mounted on the top of the valve stem outer cylinder. A mounting cylinder is mounted on the end of the connecting seat away from the valve stem outer cylinder. A rotary switch is provided on the upper side of the mounting cylinder. A drive seat is fixedly connected to the bottom of the rotary switch. A driven column is mounted on the lower side of the drive seat. A valve stem is fixedly connected to the bottom of the driven column.

[0007] Preferably, both ends of the shut-off valve seat are provided with mounting seats, the two sets of mounting seats are symmetrical about the central axis of the shut-off valve seat, and the mounting seats are arranged in the shape of regular hexagonal prisms.

[0008] Preferably, the actuator includes a rotary switch, a mounting cylinder, a connecting seat, and a valve stem outer cylinder, wherein a valve stem is movably mounted inside the valve stem outer cylinder, and the upper outer side of the valve stem is covered with sealing packing.

[0009] Preferably, the top of the valve stem is disposed inside the connecting seat, and the connecting seat and the valve stem are sealed together by sealing packing.

[0010] Preferably, the drive seat has a drive groove inside, which is located directly above the passive column. The passive column and the drive groove are sized to match, and the cross-sections of the passive column and the drive groove are rectangular.

[0011] Preferably, the drive seat moves downward and the drive groove is engaged inside the passive column. An outer sleeve is fixedly provided at the bottom of the drive seat. A limiting plate is fixedly provided on the outer circumferential wall of the outer sleeve. The limiting plate is circular and is slidably disposed in a receiving groove opened inside the mounting cylinder.

[0012] Preferably, a compression spring is installed on the outer side of the outer sleeve, and a support plate is provided at the bottom of the compression spring. The support plate is fixedly connected to the inner wall of the receiving groove, and the compression spring is disposed between the limiting plate and the support plate.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: When it is necessary to open or close the stop valve seat through the valve stem, directly rotating the rotary switch will not rotate the valve stem, thus preventing the stop valve seat from being opened or closed. The design that prevents the valve stem from being directly driven by the rotary switch forces operators to follow a specific procedure, first pressing and confirming the status or meeting the preconditions, reducing safety accidents caused by accidental contact or misjudgment; avoiding accidental opening and closing due to accidental contact or accidental turning of the handwheel; suitable for hazardous media or critical processes, reducing the risk of human operation. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A bottom view;

[0016] Figure 3 for Figure 1 Top view;

[0017] Figure 4 This utility model relates to a rotary switch and its mounting structure.

[0018] Figure 5 for Figure 4 Top view.

[0019] The following are the labeling elements in the diagram: 1. Gate valve seat; 2. Mounting seat; 3. Actuator; 31. Rotary switch; 311. Drive seat; 312. Drive groove; 313. Limit plate; 314. Compression spring; 315. Support plate; 316. Sealing packing; 317. Valve stem; 318. Passive column; 319. Outer sleeve; 32. Mounting sleeve; 33. Connecting seat; 34. Valve stem outer sleeve. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-5 This utility model provides a regulating stop valve, including a stop valve seat 1, an installation seat 2 fixedly provided at the end of the stop valve seat 1, an actuator 3 installed on the upper surface of the stop valve seat 1, the actuator 3 including a valve stem outer cylinder 34 whose bottom communicates with the stop valve seat 1, a connecting seat 33 installed on the top of the valve stem outer cylinder 34, an installation cylinder 32 installed at the end of the connecting seat 33 away from the valve stem outer cylinder 34, a rotary switch 31 provided on the upper side of the installation cylinder 32, a drive seat 311 fixedly connected to the bottom of the rotary switch 31, a passive column 318 installed on the lower side of the drive seat 311, and a valve stem 317 fixedly connected to the bottom of the passive column 318.

[0022] Working Principle: In actual use, when the valve stem 317 needs to be used to open or close the shut-off valve seat 1, directly rotating the rotary switch 31 will not allow the valve stem 317 to be rotated, thus preventing the shut-off valve seat 1 from opening or closing. In systems handling high pressure, high temperature, or conveying hazardous media such as natural gas or chemical raw materials, misoperation may lead to leaks, explosions, or equipment damage. The design of preventing the rotary switch 31 from directly driving the valve stem forces operators to follow a specific procedure: first press, confirm the status, or meet preconditions, reducing safety accidents caused by accidental contact or misjudgment. During operation, the valve must be pressed first and then rotated to operate, avoiding accidental opening or closing due to accidental contact or accidental handwheel rotation. It is suitable for hazardous media or critical processes, reducing the risk of human error.

[0023] The specific operation method of the regulating gate valve is as follows: Press down the rotary switch 31 to make the drive seat 311 move downward. The drive groove 312 is engaged with the outside of the driven column 318. At the same time, the limit plate 313 compresses the pressure spring 314. At this time, rotate the rotary switch 31. The valve stem 317 is driven to rotate through the drive seat 311 and the driven column 318. The bottom of the valve stem 317 is connected to the valve core set inside the gate valve seat 1 to complete the opening and closing of the gate valve seat 1. After the gate valve operation is completed, release the rotary switch 31. The compressed pressure spring 314 returns to its original position and rebounds, causing the drive seat 311 and the driven column 318 to disengage. Rotating the rotary switch 31 will prevent the gate valve from being operated, ensuring the safety of the gate valve during operation.

[0024] As a preferred embodiment, mounting seats 2 are provided at both ends of the stop valve seat 1. The two sets of mounting seats 2 are symmetrical about the central axis of the stop valve seat 1, and the mounting seats 2 are arranged in the shape of regular hexagonal prisms.

[0025] In a preferred embodiment, the actuator 3 includes a rotary switch 31, a mounting cylinder 32, a connecting seat 33, and a valve stem outer cylinder 34. A valve stem 317 is movably mounted inside the valve stem outer cylinder 34, and a sealing packing 316 covers the outer side of the upper end of the valve stem 317.

[0026] In a preferred embodiment, the top of the valve stem 317 is disposed inside the connecting seat 33, and the connecting seat 33 and the valve stem 317 are sealed together by a sealing packing 316.

[0027] In a preferred embodiment, the drive base 311 has a drive groove 312 inside, which is located directly above the passive column 318. The passive column 318 and the drive groove 312 are matched in size, and the cross-sections of the passive column 318 and the drive groove 312 are rectangular.

[0028] In a preferred embodiment, the drive seat 311 moves downward and the drive groove 312 engages with the inside of the passive column 318. An outer sleeve 319 is fixedly provided at the bottom of the drive seat 311. A limiting disk 313 is fixedly provided on the outer circumferential wall of the outer sleeve 319. The limiting disk 313 is circular and is slidably provided in the receiving groove opened inside the mounting cylinder 32.

[0029] In a preferred embodiment, a compression spring 314 is installed on the outer side of the outer sleeve 319, and a support plate 315 is provided at the bottom of the compression spring 314. The support plate 315 is fixedly connected to the inner wall of the receiving groove, and the compression spring 314 is disposed between the limiting plate 313 and the support plate 315.

[0030] 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 regulating shut-off valve, comprising a shut-off valve seat (1), characterized in that: The end of the shut-off valve seat (1) is fixedly provided with a mounting seat (2). An actuator (3) is installed on the upper surface of the shut-off valve seat (1). The actuator (3) includes a valve stem outer cylinder (34) whose bottom is connected to the shut-off valve seat (1). A connecting seat (33) is installed on the top of the valve stem outer cylinder (34). An mounting cylinder (32) is installed at the end of the connecting seat (33) away from the valve stem outer cylinder (34). A rotary switch (31) is provided on the upper side of the mounting cylinder (32). A drive seat (311) is fixedly connected to the bottom of the rotary switch (31). A passive column (318) is installed on the lower side of the drive seat (311). A valve stem (317) is fixedly connected to the bottom of the passive column (318).

2. The regulating shut-off valve according to claim 1, characterized in that: Both ends of the shut-off valve seat (1) are provided with mounting seats (2). The two sets of mounting seats (2) are symmetrical about the central axis of the shut-off valve seat (1). The mounting seats (2) are set in a regular hexagonal prism shape.

3. The regulating shut-off valve according to claim 1, characterized in that: The actuator (3) includes a rotary switch (31), a mounting cylinder (32), a connecting seat (33), and a valve stem outer cylinder (34). A valve stem (317) is movably installed inside the valve stem outer cylinder (34), and a sealing packing (316) covers the outer side of the upper end of the valve stem (317).

4. A regulating shut-off valve according to claim 3, characterized in that: The top of the valve stem (317) is located inside the connecting seat (33), and the connecting seat (33) and the valve stem (317) are sealed together by sealing packing (316).

5. A regulating shut-off valve according to claim 1, characterized in that: The drive seat (311) has a drive groove (312) inside. The drive groove (312) is located directly above the passive column (318). The passive column (318) and the drive groove (312) are matched in size. The cross-section of the passive column (318) and the drive groove (312) is rectangular.

6. A regulating shut-off valve according to claim 5, characterized in that: The drive seat (311) moves downward and the drive groove (312) is engaged inside the passive column (318). The bottom of the drive seat (311) is fixedly provided with an outer sleeve (319). A limiting plate (313) is fixedly provided on the outer circumferential wall of the outer sleeve (319). The limiting plate (313) is circular and is slidably provided in the receiving groove opened inside the mounting cylinder (32).

7. A regulating shut-off valve according to claim 6, characterized in that: A compression spring (314) is installed on the outer side of the outer sleeve (319). A support plate (315) is provided at the bottom of the compression spring (314). The support plate (315) is fixedly connected to the inner wall of the circumference of the receiving groove. The compression spring (314) is located between the limiting plate (313) and the support plate (315).

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