Straight-through type sealing stop valve

Abstract

The utility model relates to the technical field of stop valves, and discloses a straight-through type sealing stop valve which comprises a stop valve body, a sealing seat installed on the stop valve body and an adjusting valve rod installed on the sealing seat, one end of the adjusting valve rod is provided with a valve clack used for blocking the stop valve body, and the other end of the adjusting valve rod is provided with a valve rod. A blocking assembly is installed on the stop valve body and comprises a pressing air pump fixedly installed on one side of the outer portion of the stop valve body, a three-way pipe fixed to the output end of the pressing air pump and connecting pipes fixed to the two ends of the three-way pipe. When leakage occurs at the joint of the sealing seat and the regulating valve rod, various emergency and temporary plugging requirements can be met, operation is flexible and convenient, a large amount of medium gas leaked into the environment is effectively reduced, environment protection is facilitated, pollution to the environment is reduced, and the using effect of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealed stop valves, in particular to a straight-through sealed stop valve. Background Art

[0002] The stop valve is the most widely used valve. The friction between the sealing surfaces is small during the opening and closing process. It is relatively durable, has a small opening height, is easy to manufacture, and is convenient to maintain. It is suitable not only for medium and low pressures, but also for high pressures. At present, when the stop valve is in use, the air flow rate is controlled by the degree of opening of the stop valve.

[0003] At present, during long-term use, the regulating valve stem will rub against the seal due to frequent switching operations, causing wear of the sealing surface, thereby causing leakage. It is impossible to achieve timely emergency sealing, resulting in gas leakage and air pollution. Therefore, we propose a straight-through sealed stop valve to solve the above problems. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the utility model provides a straight-through sealed stop valve, which solves the problem that the current regulating valve stem will rub against the seal due to frequent switching operations during long-term use, causing wear of the sealing surface, thereby causing leakage, and unable to achieve timely emergency sealing, resulting in gas leakage and air pollution.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a straight-through sealed stop valve, comprising a stop valve body, a sealing seat mounted on the stop valve body, and a regulating valve stem mounted on the sealing seat, one end of the regulating valve stem being mounted with a valve disc for sealing the stop valve body, and a sealing assembly being mounted on the stop valve body;

[0006] The blocking assembly includes a pressing air pump fixedly mounted on one side of the outer portion of the stop valve body, a three-way pipe fixed at the output end of the pressing air pump, and connecting pipes fixed at both ends of the three-way pipe;

[0007] A fixing pipe is fixedly installed at one end of the connecting pipe away from the tee pipe, and the fixing pipe is fixedly connected to the stop valve body. One end of the fixing pipe passes through the outside of the stop valve body and extends into the inside of the stop valve body, and is fixedly connected to the airbag ball arranged inside the stop valve body through the pipe body.

[0008] A control valve is fixedly installed inside the fixed pipe, and the control valve is used to seal the fixed pipe.

[0009] Preferably, a pressing plate is fixedly installed on one side of the pressing air pump, and springs 1 are fixedly installed at the four corners between the pressing plate and the stop valve body.

[0010] Preferably, a telescopic rod is fixed between the pressing plate and the stop valve body on a side close to the spring 1, and the spring 1 is wound around the surface of the telescopic rod.

[0011] Preferably, a sleeve is fixedly mounted on the upper surface of the sealing seat, a shell sleeve is slidably connected to the inside of the sleeve, a fixing ring is fixed to the inner side wall of the sleeve, a spring 2 is fixedly mounted between the shell sleeve and the fixing ring, a chuck is fixedly mounted on the inner side wall of the shell sleeve, and a locking disk is fixedly mounted on the surface of the regulating valve stem.

[0012] Preferably, a plurality of groups of locking teeth arranged in an annular shape and at equal intervals are fixed to the outer surface of the locking disk, and a locking groove adapted to the locking teeth is provided on the inner side wall of the chuck.

[0013] Preferably, the outer surface of the shell sleeve is fixed with symmetrically arranged limiting strips, the inner side wall of the sleeve is provided with limiting grooves adapted to the limiting strips, and the limiting strips and the sleeve are slidably connected through the limiting grooves.

[0014] Beneficial effects

[0015] The utility model provides a straight-through sealed stop valve. Compared with the prior art, it has the following beneficial effects:

[0016] This straight-through sealed stop valve, through the sealing component, can meet various emergency and temporary sealing needs when leakage occurs at the connection between the sealing seat and the regulating valve stem. It is flexible and convenient to operate, effectively reduces the leakage of large amounts of medium gas into the environment, helps protect the environment, reduces environmental pollution, and improves the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the main structure of the stop valve of the utility model;

[0019] Figure 3 This is a cross-sectional view of the sleeve, housing sleeve and other connecting parts of the utility model.

[0020] In the figure: 1. Stop valve body; 2. Sealing seat; 3. Adjusting valve stem; 4. Blocking assembly; 401. Pressing air pump; 402. Pressing plate; 403. Telescopic rod; 404. Spring 1; 405. Tee; 406. Connecting pipe; 407. Fixing pipe; 408. Airbag ball; 409. Control valve; 410. Sleeve; 411. Housing sleeve; 412. Spring 2; 413. Locking disk; 414. Chuck; 415. Limiting strip; 416. Limiting groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 As shown:

[0023] A straight-through sealed stop valve comprises a stop valve body 1, a sealing seat 2 mounted on the stop valve body 1 and a regulating valve stem 3 mounted on the sealing seat 2. A valve disc for sealing the stop valve body 1 is mounted on one end of the regulating valve stem 3.

[0024] In this embodiment: In order to solve the technical problems existing in this prior art, as disclosed in the background technology above, "the current regulating valve stem 3 will rub against the seal due to frequent switching operations during long-term use, resulting in wear of the sealing surface, thereby causing leakage, and unable to achieve timely emergency sealing, resulting in gas leakage and air pollution." In terms of combined use, this problem is obviously a real problem that is difficult to solve. In view of this, in order to solve this technical problem, a sealing component 4 is added to this application document.

[0025] More specifically:

[0026] like Figure 1-Figure 3 As shown:

[0027] A plugging assembly 4 is mounted on the stop valve body 1. The plugging assembly 4 includes a pressing air pump 401 fixedly mounted on one side of the outside of the stop valve body 1, a three-way pipe 405 fixed to the output end of the pressing air pump 401, and connecting pipes 406 fixed to both ends of the three-way pipe 405.

[0028] A fixing tube 407 is fixedly installed at one end of the connecting tube 406 away from the tee tube 405. The fixing tube 407 is fixedly connected to the stop valve body 1. One end of the fixing tube 407 passes through the outside of the stop valve body 1 and extends into the inside of the stop valve body 1. It is fixedly connected to the airbag ball 408 provided inside the stop valve body 1 through the tube body.

[0029] A control valve 409 is fixedly installed inside the fixed pipe 407 , and the control valve 409 is used to seal the fixed pipe 407 .

[0030] In this embodiment: when the straight-through sealed stop valve is in use, when the connection between the regulating valve stem 3 and the sealing seat 2 is worn due to long-term twisting, resulting in gas leakage, the air pump 401 is then pressed. The compressed gas is continuously pressed on the air pump 401 and transported to the connecting pipe 406 through the three-way pipe 405 and discharged into the fixed pipe 407. The gas is transported to the airbag ball 408 through the fixed pipe 407. As the gas continues to expand, the two ends of the stop valve body 1 are sealed. When there is no leakage at the connection between the sealing seat 2 and the regulating valve stem 3, the sealing is completed. Then, the control valve 409 is rotated to seal the fixed pipe 407 for gas. Through this operation, when there is leakage at the connection between the sealing seat 2 and the regulating valve stem 3, it can meet various emergency and temporary sealing needs, is flexible and convenient to operate, effectively reduces the leakage of a large amount of medium gas into the environment, helps to protect the environment, reduces environmental pollution, and improves the use effect of the device.

[0031] It should be noted that the flanges at both ends of the stop valve body 1 are provided with sealing features to enhance the sealing effect of its pipeline connection.

[0032] Going further;

[0033] In an optional embodiment, a pressing plate 402 is fixedly installed on one side of the pressing air pump 401, and springs 404 are fixedly installed at the four corners between the pressing plate 402 and the stop valve body 1;

[0034] A telescopic rod 403 is fixed between the pressing plate 402 and the stop valve body 1 on a side close to the spring 1 404 , and the spring 1 404 is wound around the surface of the telescopic rod 403 .

[0035] In this embodiment: by pressing the pressing plate 402, the pressing air pump 401 is compressed, and at the same time, the spring 1 404 and the telescopic rod 403 are compressed. By setting the telescopic rod 403, the stability of the pressing plate 402 in pressing the pressing air pump 401 is improved, and at the same time, the spring 1 404 rebounds after compression and drives the pressing air pump 401 to quickly reset.

[0036] Going further;

[0037] In an optional embodiment, a sleeve 410 is fixedly mounted on the upper surface of the sealing seat 2, a housing sleeve 411 is slidably connected to the interior of the sleeve 410 up and down, a fixing ring is fixed to the inner side wall of the sleeve 410, a spring 2 412 is fixedly mounted between the housing sleeve 411 and the fixing ring, a chuck 414 is fixedly mounted on the inner side wall of the housing sleeve 411, a locking disk 413 is fixedly mounted on the surface of the regulating valve stem 3, a plurality of groups of locking teeth arranged equidistantly in an annular shape are fixed to the outer surface of the locking disk 413, and a locking groove adapted to the locking teeth is provided on the inner side wall of the chuck 414;

[0038] The outer surface of the housing sleeve 411 is fixed with symmetrically arranged limiting strips 415, and the inner side wall of the sleeve 410 is provided with limiting grooves 416 adapted to the limiting strips 415. The limiting strips 415 and the sleeve 410 are slidably connected through the limiting grooves 416.

[0039] When the regulating valve stem 3 is rotated and the valve disc is driven to seal the stop valve body 1, the housing sleeve 411 is pressed, so that the housing sleeve 411 compresses the spring 2 412. At the same time, the housing sleeve 411 drives the limiting bar 415 to slide in the limiting groove 416 provided in the sleeve 410. The setting of the limiting bar 415 and the limiting groove 416 can limit the housing sleeve 411, so that the housing sleeve 411 is more stable during the movement process. The housing sleeve 411 drives the chuck 414 to disengage from the lock disk 413, thereby releasing the lock of the regulating valve stem 3 and facilitating the rotation of the regulating valve stem 3. When the rotation is completed, the housing sleeve 411 is then released, so that the locking groove provided by the chuck 414 on the housing sleeve 411 is stuck on the corresponding locking tooth of the lock disk 413, thereby completing the locking of the regulating valve stem 3, thereby effectively preventing the regulating valve stem 3 from shifting and driving the valve disc angle to change, thereby better achieving a sealing effect on the gas.

[0040] The working principle and use process of the present invention are as follows: when the straight-through sealing stop valve is in use, when the connection between the regulating valve stem 3 and the sealing seat 2 is worn due to long-term rotation, resulting in gas leakage, the pressing plate 402 is then pressed to compress the pressing air pump 401. The gas compressed by continuously pressing the pressing air pump 401 is transported to the connecting pipe 406 through the three-way pipe 405 and discharged into the fixed pipe 407. The gas is transported to the airbag ball 408 through the fixed pipe 407. As the gas continues to expand, the two ends of the stop valve body 1 are blocked. When there is no leakage at the connection between the sealing seat 2 and the regulating valve stem 3, the blocking is completed. Then, the control valve 409 is rotated to block the gas in the fixed pipe 407. Through this operation, when there is leakage at the connection between the sealing seat 2 and the regulating valve stem 3, it can meet various emergency and temporary blocking needs, is flexible and convenient to operate, effectively reduces the leakage of a large amount of medium gas into the environment, helps to protect the environment, reduces environmental pollution, and improves the use effect of the device.

[0041] When the regulating valve stem 3 is rotated to drive the valve disc to block the stop valve body 1, the housing sleeve 411 is pressed at this time, so that the housing sleeve 411 compresses the spring 2 412. At the same time, the housing sleeve 411 drives the limiting bar 415 to slide in the limiting groove 416 provided in the sleeve 410. The setting of the limiting bar 415 and the limiting groove 416 can limit the housing sleeve 411, so that the housing sleeve 411 is more stable during the movement process. The housing sleeve 411 drives the chuck 414 to disengage from the lock disk 413, thereby releasing the lock of the regulating valve stem 3 and facilitating the rotation of the regulating valve stem 3. When the rotation is completed, the housing sleeve 411 is then released, so that the locking groove provided by the chuck 414 on the housing sleeve 411 is stuck on the corresponding locking tooth of the lock disk 413, thereby completing the locking of the regulating valve stem 3, thereby effectively preventing the regulating valve stem 3 from shifting and driving the valve disc angle to change, thereby better achieving a sealing effect on the gas.

[0042] At the same time, the contents not described in detail in this specification belong to the existing technology well known to those skilled in the art.

Claims

1. A straight-through sealed stop valve, comprising a stop valve body (1), a sealing seat (2) mounted on the stop valve body (1), and a regulating valve stem (3) mounted on the sealing seat (2), wherein one end of the regulating valve stem (3) is mounted with a valve disc for sealing the stop valve body (1), characterized in that: A blocking component (4) is installed on the stop valve body (1); The blocking assembly (4) comprises a pressing air pump (401) fixedly mounted on one side of the outside of the stop valve body (1), a three-way pipe (405) fixed at the output end of the pressing air pump (401), and connecting pipes (406) fixed at both ends of the three-way pipe (405); A fixing pipe (407) is fixedly installed at one end of the connecting pipe (406) away from the tee pipe (405), and the fixing pipe (407) is fixedly connected to the stop valve body (1). One end of the fixing pipe (407) passes through the outside of the stop valve body (1) and extends to the inside of the stop valve body (1), and is fixedly connected to the airbag ball (408) arranged inside the stop valve body (1) through the pipe body. A control valve (409) is fixedly installed inside the fixed pipe (407), and the control valve (409) is used to seal the fixed pipe (407).

2. A straight-through sealing stop valve according to claim 1, characterized in that: A pressing plate (402) is fixedly installed on one side of the pressing air pump (401), and springs (404) are fixedly installed at the four corners between the pressing plate (402) and the stop valve body (1).

3. A straight-through sealing stop valve according to claim 2, characterized in that: A telescopic rod (403) is fixed between the pressing plate (402) and the stop valve body (1) on one side close to the spring 1 (404), and the spring 1 (404) is wound around the surface of the telescopic rod (403).

4. A straight-through sealing stop valve according to claim 2, characterized in that: A sleeve (410) is fixedly mounted on the upper surface of the sealing seat (2), a housing sleeve (411) is slidably connected to the interior of the sleeve (410) in an upward and downward manner, a fixing ring is fixedly mounted on the inner side wall of the sleeve (410), a spring 2 (412) is fixedly mounted between the housing sleeve (411) and the fixing ring, a chuck (414) is fixedly mounted on the inner side wall of the housing sleeve (411), and a locking disk (413) is fixedly mounted on the surface of the regulating valve stem (3).

5. A straight-through sealing stop valve according to claim 4, characterized in that: The outer surface of the lock disk (413) is fixed with a plurality of groups of locking teeth arranged in an annular shape and at equal intervals, and the inner side wall of the chuck (414) is provided with locking grooves adapted to the locking teeth.

6. A straight-through sealing stop valve according to claim 5, characterized in that: The outer surface of the housing sleeve (411) is fixed with symmetrically arranged limiting strips (415), the inner side wall of the sleeve (410) is provided with limiting grooves (416) adapted to the limiting strips (415), and the limiting strips (415) and the sleeve (410) are slidably connected via the limiting grooves (416).

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