Stop valve

Abstract

According to the technical scheme, the stop valve is characterized by comprising a valve body, a valve rod, a valve clack and a valve seat, the valve rod is connected with the valve clack and used for driving the valve clack to abut against the valve seat in a sealed mode, a spring cavity, a sealing cavity and a valve cavity are sequentially formed in the valve body in the height direction of the valve body, the valve rod can penetrate through the spring cavity, the sealing cavity and the valve cavity, and the outer end of the valve rod is connected with a lever assembly; a spring assembly is arranged in the spring cavity, a driving block is arranged on the valve rod, and the driving block and the spring assembly are arranged in a linkage mode. A sealing block is arranged on the valve rod and slidably connected into the sealing cavity, a first sealing seat and a second sealing seat are arranged in the sealing cavity and arranged at the two ends of the sealing block respectively, and sealing faces are arranged on the upper side and the lower side of the sealing block respectively; the valve clack and the valve seat are both arranged in the valve cavity, and the stop valve is better in sealing effect and more convenient to use.

Description

TECHNICAL FIELD

[0001] The utility model relates to a valve, more specifically, it relates to a stop valve. BACKGROUND

[0002] The stop valve, also called a stop gate, is one of the most widely used valves. The stop valve is a tool that relies on the pressure of the valve lever to make the sealing surface of the valve clapper tightly adhere to the sealing surface of the valve seat to prevent the flow of medium. It belongs to a forced sealing type valve. Some gas valves are stop valves and are widely used in gas medium pipelines to block the flow of gas medium.

[0003] Because the pressure of gas is usually lower than that of liquid, the sealing force can be provided by a spring during the closing process of the valve. For example, a fast-closing stop valve in the prior art, with publication number CN221121076U, can achieve fast opening and closing of the valve through the design of a movable lever and a cylindrical spring. This type of valve has been recognized by the market to some extent, but there are still some problems in use: 1. In the opening and closing state, it cannot be fixed; 2. The sealing life is poor. SUMMARY

[0004] In view of the deficiencies of the prior art, the purpose of the utility model is to provide a stop valve with better sealing effect and more convenient use.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a stop valve, comprising a valve body, a valve rod, a valve clapper and a valve seat, the valve rod is connected with the valve clapper and is used for driving the valve clapper to sealingly abut against the valve seat, a spring cavity, a sealing cavity and a valve cavity are sequentially arranged in the valve body along the height direction of the valve body, the outer end of the valve rod is connected with a lever assembly;

[0006] A spring assembly is arranged in the spring cavity, a driving block is arranged on the valve rod, and the driving block is linked with the spring assembly;

[0007] A sealing block is arranged on the valve rod, the sealing block is slidingly connected in the sealing cavity, a first sealing seat and a second sealing seat are arranged in the sealing cavity, the first sealing seat and the second sealing seat are respectively arranged at both ends of the sealing block, and sealing surfaces are arranged on the upper and lower sides of the sealing block;

[0008] The valve clapper and the valve seat are both arranged in the valve cavity.

[0009] The utility model is further provided with a third sealing seat arranged in the spring cavity and a sealing step arranged at the lower end of the driving block.

[0010] The utility model is further provided with a sealing ring arranged on the third sealing seat, the first sealing seat and the second sealing seat.

[0011] The utility model further sets up: spring subassembly includes mounting seat and drive spring, mounting seat fixed mounting in spring cavity inside upper portion, drive spring one end is connected with mounting seat, other end is connected with drive block.

[0012] The utility model further sets up: lever subassembly includes installation arm and rotary arm, installation arm fixed mounting in valve body's upper end, the middle part of rotary arm is hinged and sets up with installation arm, one end of rotary arm is linked with valve rod setting.

[0013] The utility model further sets up: valve rod is provided with connecting bolt, rotary arm is provided with linkage head, linkage head is assembled with connecting bolt setting, be used for control valve rod's movement.

[0014] The utility model further sets up: the middle part of installation arm is provided with movable slot, installation arm is provided with the limit hole that communicates with movable slot, rotary arm is provided with the positioning hole correspondingly, limit hole and positioning hole are connected through fixed peg.

[0015] Summarized above, the utility model has following beneficial effect: utilize spring subassembly and lever subassembly, when the operating personnel make valve rod move upwards through lever subassembly, the valve flap separates with the valve seat, and drive block moves upwards, and compresses spring subassembly, when loosening lever subassembly, under the action of spring subassembly can fast reset, make the valve automatic closing, do not need manual operation, can be applicable to the working condition that needs to close the valve fast.

[0016] And under the original sealing structure, increase the design of sealing cavity, sealing block, first sealing seat and second sealing seat, under the valve opening state and closed state, sealing block can be respectively with first sealing seat, second sealing seat tightly abut, to enhance the sealing effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is structural schematic diagram of stop valve;

[0018] Figure 2 It is Figure 1 A enlarged schematic view of.

[0019] Fig. 1, valve body;11, spring cavity;111, third sealing seat;12, sealing cavity;121, first sealing seat;122, second sealing seat;13, valve cavity;2, valve stem;21, drive block;22, sealing block;3, valve flap;4, valve seat;5, lever assembly;51, installation arm;511, limit hole;52, rotary arm;521, positioning hole;6, spring assembly;61, mounting seat;62, drive spring. DETAILED DESCRIPTION

[0020] The utility model is further explained in detail below in combination with the drawings and embodiments. Same parts are denoted by same reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" in the following description refer to the directions in the drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from the geometric center of a specific part.

[0021] Referring to Figure 1 and Figure 2 To achieve the above object, the utility model provides the following technical scheme: a stop valve, including valve body 1, valve stem 2, valve clapper 3 and valve seat 4, valve stem 2 is connected with valve clapper 3, is used for driving valve clapper 3 and valve seat 4 sealed abutment, the spring cavity 11 that valve stem 2 passes through is sequentially arranged in valve body 1 along its height direction, sealing cavity 12 and valve chamber 13, the outer end of valve stem 2 is connected with lever assembly 5;

[0022] Spring assembly 6 is arranged in spring cavity 11, driving block 21 is arranged on valve stem 2, and driving block 21 is arranged in linkage with spring assembly 6;

[0023] Sealing block 22 is arranged on valve stem 2, sealing block 22 is slidably connected in sealing cavity 12, first sealing seat 121 and second sealing seat 122 are arranged in sealing cavity 12, first sealing seat 121 and second sealing seat 122 are arranged at the two ends of sealing block 22 respectively, and sealing surface is arranged on the upper and lower sides of sealing block 22;

[0024] Valve clapper 3 and valve seat 4 are arranged in valve chamber 13.

[0025] The design of the utility model utilizes spring assembly 6 and lever assembly 5, when the operator makes valve stem 2 move upwards through lever assembly 5, valve clapper 3 is separated from valve seat 4 at the same time, driving block 21 moves upwards, and spring assembly 6 is compressed, and when lever assembly 5 is released, it can be quickly reset under the action of spring assembly 6, so that the valve is automatically closed, without manual operation, and can be applicable to the working condition that needs to quickly close the valve.

[0026] And under the original sealing structure, the design of sealing cavity 12, sealing block 22, first sealing seat 121 and second sealing seat 122 is increased, sealing block 22 can be tightly abutted with first sealing seat 121 and second sealing seat 122 respectively in the open state and closed state of the valve, so as to enhance the sealing effect.

[0027] The original sealing structure includes a sealing sleeve arranged between valve stem 2 and valve body 1, which ensures that the inside of valve body 1 remains airtight during the movement of valve stem 2.

[0028] The utility model further sets up: spring cavity 11 is provided with third sealing seat 111, and the lower extreme of driving piece 21 is provided with sealing step, the design of this structure can be in the closed state of valve, third sealing seat 111 and sealing step are closely abutted, and the sealing property of strengthening equipment whole is strengthened.

[0029] The utility model further sets up: third sealing seat 111, first sealing seat 121 and second sealing seat 122 all are provided with sealing ring, the design of this sealing ring can strengthen the sealing property of connecting place.

[0030] The utility model further sets up: spring assembly 6 includes mounting seat 61 and drive spring 62, and mounting seat 61 is fixedly installed in the top inside spring cavity 11, and one end of drive spring 62 is connected with mounting seat 61, and the other end is connected with driving piece 21, the design of this structure can drive spring 62 be compressed through drive seat to push drive spring 62 in the movement of valve stem 2, when lever assembly 5 is loosened, drive seat moves down under the elastic force of drive spring 62.

[0031] The utility model further sets up: lever assembly 5 includes mounting arm 51 and rotating arm 52, and mounting arm 51 is fixedly installed in the upper end of valve body 1, and the middle part of rotating arm 52 is hingedly arranged with mounting arm 51, and one end of rotating arm 52 is linked with valve stem 2.

[0032] The design of this structure, since mounting arm 51 is fixedly connected, operating personnel can place the palm in mounting arm 51 position, then force rotating arm 52, make rotating arm 52 rotate along the hinge point with mounting arm 51, thereby make rotating arm 52 drive valve stem 2 to move.

[0033] The utility model further sets up: valve stem 2 is provided with connecting bolt, and rotating arm 52 is provided with linkage head, and linkage head is assembled with connecting bolt and is used for controlling the movement of valve stem 2.

[0034] The design of this structure, this linkage head is bifurcated rod piece of U-shaped structure and is used for abutting the lower side of connecting bolt, so that in the rotating process of rotating arm 52, valve stem 2 can be driven to move up.

[0035] The utility model further sets up: the middle part of mounting arm 51 is provided with movable slot, and mounting arm 51 is provided with limit hole 511 that communicates with movable slot, and rotating arm 52 is provided with positioning hole 521 correspondingly, and limit hole 511 and positioning hole 521 are connected through fixed bolt.

[0036] The structure is designed, when the rotating arm 52 is rotated to the position, the positioning hole 521 is aligned with the limiting hole 511, at the moment, the rotating arm can be fixed and limited by the fixing bolt, so that the operator does not need to hold the rotating arm all the time.

[0037] The preferred embodiments of the present application are described above, the protection scope of the present application is not limited to the above-mentioned embodiments, any technical scheme falling within the idea of the present application belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, some improvements and decorations without departing from the principle of the present application, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. A stop valve comprising a valve body (1), a valve stem (2), a valve disc (3) and a valve seat (4), the valve stem (2) being connected to the valve disc (3) for driving the valve disc (3) into sealing abutment with the valve seat (4), characterized in that: The valve body (1) is sequentially provided with a spring cavity (11), a sealing cavity (12) and a valve cavity (13) along the height direction, the outer end of the valve rod (2) is connected with a lever assembly (5); The spring cavity (11) is provided with a spring assembly (6), the valve rod (2) is provided with a driving block (21), and the driving block (21) is connected with the spring assembly (6) in linkage; The valve rod (2) is provided with a sealing block (22), the sealing block (22) is slidably connected in the sealing cavity (12), the sealing cavity (12) is provided with a first sealing seat (121) and a second sealing seat (122), the first sealing seat (121) and the second sealing seat (122) are respectively arranged at the two ends of the sealing block (22), and the upper and lower sides of the sealing block (22) are provided with sealing surfaces. The valve disc (3) and the valve seat (4) are arranged in the valve cavity (13).

2. A globe valve according to claim 1, characterized in that: The spring cavity (11) is provided with a third sealing seat (111), and the lower end of the driving block (21) is provided with a sealing step.

3. A globe valve according to claim 2, characterised in that: The third sealing seat (111), the first sealing seat (121) and the second sealing seat (122) are all provided with sealing rings.

4. A globe valve according to claim 1, wherein: The spring assembly (6) comprises a mounting seat (61) and a driving spring (62), the mounting seat (61) is fixedly installed at the upper part inside the spring cavity (11), one end of the driving spring (62) is connected with the mounting seat (61), and the other end is connected with the driving block (21).

5. A globe valve according to claim 1, wherein: The lever assembly (5) comprises a mounting arm (51) and a rotating arm (52), the mounting arm (51) is fixedly installed at the upper end of the valve body (1), the middle part of the rotating arm (52) is hingedly connected with the mounting arm (51), and one end of the rotating arm (52) is connected with the valve rod (2) in linkage.

6. A globe valve according to claim 5, characterized in that: The valve rod (2) is provided with a connecting bolt, the rotating arm (52) is provided with a linkage head, the linkage head is assembled with the connecting bolt, and the linkage head is used for controlling the movement of the valve rod (2).

7. A globe valve according to claim 5, characterized in that: The middle part of the mounting arm (51) is provided with a movable groove, the mounting arm (51) is provided with a limiting hole (511) in communication with the movable groove, the rotating arm (52) is correspondingly provided with a positioning hole (521), and the limiting hole (511) and the positioning hole (521) are connected through a fixing bolt.

Images