CN210240570U

CN210240570U - Throttle stop valve

Info

Publication number: CN210240570U
Application number: CN201921231123.0U
Authority: CN
Inventors: Weiwei Gao; 高伟伟; Lipeng Han; 韩利鹏; Tao Zhang; 张涛
Original assignee: Henan Yongchuang Automation Control Technology Co Ltd
Current assignee: Henan Yongchuang Automation Control Technology Co Ltd
Priority date: 2019-08-01
Filing date: 2019-08-01
Publication date: 2020-04-03
Anticipated expiration: 2029-08-01

Abstract

The utility model relates to a stop valve technical field just discloses a throttle stop valve, including the stop valve body, the bottom fixed mounting of stop valve body has the bottom, it has sealed case cover to peg graft at the top of stop valve body, the bottom of sealed case cover extends to the inside of stop valve body. The utility model discloses a, seal through the bottom opening of bottom to the stop valve body, utilize the sealed valve core cover to seal the kneck of stop valve body and upper cover, avoid the case assembly to rock owing to inside liquid strikes simultaneously, can not cause case assembly and stop valve body inner wall contact production gap owing to rocking, improve the closed effect of stop valve, prevent to rotate the activity about the department of running through of screw rod and upper cover, let its sealed effect better, further improve the sealed effect of rotating screw rod and upper cover department of running through sealing mechanism, let the sealed effect of stop valve better, and its control is simpler, the person's of facilitating the use operation.

Description

Throttle stop valve

Technical Field

The utility model relates to a stop valve technical field specifically is a throttle stop valve.

Background

The stop valve is also called a stop valve, belonging to a forced sealing type valve, so when the valve is closed, pressure must be applied to a valve clack to prevent a sealing surface from leaking, when a medium enters the valve from the lower part of the valve clack, the resistance to be overcome by an operating force is the friction force of a valve rod and a filler and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise, the failure of the valve rod bending can occur, and the stop valve is divided into three types according to the connection mode: flange connection, screw thread connection and welding connection.

Traditional stop valve is when using, because when opening and closing, the pressure that high-pressure liquid suddenly promoted can lead to the fact great impact to the valve clack of stop valve, can influence the closed effect of ending of valve clack, can influence the screw rod rather than being connected simultaneously, causes to produce the gap between screw rod and the stop valve and causes the leakage, and can produce the noise influence during vibrations and use, so proposed a throttle stop valve and solved above-mentioned problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a throttling stop valve possesses and avoids the case to rock advantages such as, has solved traditional stop valve when using, because when opening and closing, the pressure that high-pressure liquid promoted suddenly can cause great impact to the valve clack of stop valve, can influence the valve clack by closed effect, can influence the screw rod rather than being connected simultaneously, causes to produce the gap between screw rod and the stop valve and causes the leakage, and can produce the problem that the noise influences the use during vibrations.

(II) technical scheme

For the above-mentioned purpose of avoiding the case to rock, the utility model provides a following technical scheme: a throttling stop valve comprises a stop valve body, wherein a bottom cover is fixedly installed at the bottom of the stop valve body, a sealing valve core sleeve is inserted at the top of the stop valve body, the bottom of the sealing valve core sleeve extends into the stop valve body, an upper cover is contacted with the top of the sealing valve core sleeve, the top of the upper cover is fixedly connected with the stop valve body, a rotating screw is in threaded connection with the top of the upper cover, the bottom end of the rotating screw sequentially penetrates through the upper cover and the sealing valve core sleeve and extends to the inner side of the sealing valve core sleeve, a sealing mechanism fixedly connected with the rotating screw is sleeved on the rotating screw, the sealing mechanism is located in the upper cover and is contacted with the inner bottom wall of the upper cover, a valve core assembly is rotatably connected with the bottom end of the rotating screw, the valve core assembly is located on the inner side of the sealing valve core sleeve and is in sliding connection with the sealing valve core sleeve, and the, the left side and the right side of the sealing valve core sleeve are both provided with strip-shaped sliding grooves, the left side and the right side of the valve core assembly are both fixedly connected with limiting sliding blocks, and the two limiting sliding blocks are respectively in sliding connection with the two strip-shaped sliding grooves.

Preferably, the sealing valve core sleeve comprises a sealing ring, the sealing ring is located between the stop valve body and the upper cover and is in contact with one side of the stop valve body opposite to the upper cover, a valve sleeve is integrally formed at the bottom of the sealing ring, the valve sleeve is located inside the stop valve body, and the two strip-shaped chutes are respectively arranged on the left side and the right side of the valve sleeve.

Preferably, the top and the equal fixedly connected with leak-stopping ring in bottom of sealing washer, the embedding annular has all been seted up to the relative one side of stop valve body and upper cover, two one side that the sealing washer was kept away from to the leak-stopping ring extends to the inside of two embedding annular respectively and contacts with the inner wall of embedding annular.

Preferably, sealing mechanism includes solid fixed ring, gu fixed ring cover is located on the rotation screw rod and is connected with the rotation screw rod rotation, gu fixed ring's bottom fixedly connected with spring, the spring housing is located on the rotation screw rod, the cover is equipped with rather than sliding connection's sealed pad on the rotation screw rod, the bottom of spring and the sealed top fixed connection who fills up, the bottom of sealed pad and the interior diapire contact of upper cover.

Preferably, the rotating screw is sleeved with a piston fixedly connected with the rotating screw, and the piston is located on the inner side of the sealing valve core sleeve and is in sliding connection with the inner wall of the sealing valve core sleeve.

Preferably, the rotating screw is sleeved with an adjusting nut in threaded connection with the rotating screw, and the adjusting nut is located at the top of the upper cover and is in contact with the upper cover.

Preferably, the left side and the right side of the inner part of the upper cover are both fixedly connected with limiting blocks, the two limiting blocks are both positioned at the top of the sealing mechanism, and the two limiting blocks are respectively positioned at the left side and the right side of the rotating screw and are in threaded connection with the rotating screw.

(III) advantageous effects

Compared with the prior art, the utility model provides a throttle stop valve possesses following beneficial effect:

1. the throttling stop valve seals the bottom opening of the stop valve body through the bottom cover, the internal pressure of the stop valve can be instantly increased when the stop valve is closed or opened, the joint between the stop valve body and the upper cover is sealed by the sealing valve core sleeve, meanwhile, the sealing valve core sleeve can limit the valve core assembly, and the limiting slide block is matched with the strip-shaped chute, so that the valve core assembly is prevented from shaking due to the impact of internal liquid, the straight-up and straight-down of the valve core assembly and the rotating screw are ensured, the valve core assembly is prevented from contacting with the inner wall of the stop valve body to generate a gap due to shaking, the closing effect of the stop valve is improved, meanwhile, the valve core assembly can not drive the rotating screw to shake, the left and right movement of the penetrating part of the rotating screw and the upper cover is prevented, the sealing effect of the stop valve is better, the sealing effect of, and the control is simpler, and the operation of a user is convenient.

2. This throttle stop valve will have the sealing washer to press from both sides between the two through stop valve body and upper cover, when fixed stop valve body and upper cover, utilizes the sealing washer to seal the gap between stop valve body and the upper cover, avoids liquid to flow from the gap department of stop valve body and upper cover, through the valve barrel, makes things convenient for the upper and lower slip of case assembly, restricts the slip of case assembly simultaneously.

3. This throttle stop valve through the cooperation of leak-stopping ring and embedding annular, forms annular seal structure, increases the area of contact of stop valve body, upper cover and sealing washer, further seals the gap between the three, improves sealed effect.

4. This throttle stop valve rotates the screw rod through rotating, drives solid fixed ring and descends, and compression spring's length simultaneously makes it have elasticity, and then applys thrust downwards to the sealed pad of spring bottom, lets sealed pad and the interior diapire in close contact with of upper cover, improves the sealed effect of rotating screw rod and upper cover run through the department.

5. This throttle stop valve, through the intercommunication of the sealed case cover of piston and stop valve body, reduce the upper portion of liquid infiltration piston, and then inside getting into the upper cover, improve sealed effect.

6. The throttling stop valve adjusts the position of the throttling stop valve on the rotating screw rod by rotating the adjusting nut, and when the bottom of the adjusting nut is contacted with the top of the upper cover, the rotating screw rod can be forbidden to continue to rotate downwards, so that the effect of limiting the rotation of the rotating screw rod is achieved.

7. This throttle stop valve through the threaded connection of two restriction pieces and rotation screw rod, increases and rotates the screw rod fulcrum, through upper cover, restriction piece and the case assembly of rotating the screw rod bottom, the slip of synchronous restriction rotation screw rod improves the stability of rotating the screw rod, prevents to rotate the screw rod and receives high pressure flow and causes the stop valve to produce the gap for the closed effect and the leak-proof effect of stop valve reduce.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged schematic view of the portion A of FIG. 1 according to the present invention;

FIG. 3 is an enlarged schematic view of a portion B of FIG. 1 according to the present invention;

fig. 4 is a schematic structural view of the sealing valve core sleeve of the present invention.

In the figure: 1. a stop valve body; 2. a bottom cover; 3. sealing the valve core sleeve; 301. a seal ring; 302. a valve housing; 4. an upper cover; 5. rotating the screw; 6. a sealing mechanism; 601. a fixing ring; 602. a spring; 603. a gasket; 7. a valve core assembly; 8. a strip-shaped chute; 9. a limiting slide block; 10. a leakage-stopping ring; 11. embedding the ring groove; 12. a piston; 13. adjusting the nut; 14. and limiting the block.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a throttling stop valve comprises a stop valve body 1, a bottom cover 2 is fixedly installed at the bottom of the stop valve body 1, a sealing valve core sleeve 3 is inserted into the top of the stop valve body 1, the bottom of the sealing valve core sleeve 3 extends into the stop valve body 1, an upper cover 4 is contacted with the top of the sealing valve core sleeve 3, the top of the upper cover 4 is fixedly connected with the stop valve body 1, a rotating screw 5 is connected with the top of the upper cover 4 in a threaded manner, the bottom end of the rotating screw 5 sequentially penetrates through the upper cover 4 and the sealing valve core sleeve 3 and extends to the inner side of the sealing valve core sleeve 3, a sealing mechanism 6 fixedly connected with the rotating screw 5 is sleeved on the rotating screw 5, the sealing mechanism 6 is located inside the upper cover 4 and is contacted with the inner bottom wall of the upper cover 4, the bottom end of the rotating screw 5 is rotatably connected with a valve core assembly 7, the valve core assembly 7 is, the bottom of the valve core assembly 7 is tightly contacted with the inner wall of the stop valve body 1, the left side and the right side of the sealing valve core sleeve 3 are both provided with strip-shaped chutes 8, the left side and the right side of the valve core assembly 7 are both fixedly connected with limiting slide blocks 9, the two limiting slide blocks 9 are respectively in sliding connection with the two strip-shaped chutes 8, the bottom opening of the stop valve body 1 is sealed through the bottom cover 2, the internal pressure of the stop valve is instantly increased when the stop valve is closed or opened, the interface between the stop valve body 1 and the upper cover 4 is sealed by the sealing valve core sleeve 3, meanwhile, the sealing valve core sleeve 3 limits the valve core assembly 7, and the limiting slide blocks 9 are matched with the strip-shaped chutes 8, so that the valve core assembly 7 is prevented from shaking due to internal liquid impact, the straight-up and straight-down of the valve core assembly 7 and the rotating screw, improve the closed effect of stop valve, case assembly 7 can not drive simultaneously and rotate screw rod 5 and rock, prevents to rotate the department that runs through of screw rod 5 and upper cover 4 and controls the activity, lets its sealed effect better, further improves the sealed effect of rotating screw rod 5 and upper cover 4 department of running through sealing mechanism 6, lets the sealed effect of stop valve better, and its control is simpler, person of facilitating the use's operation.

Further, sealing valve core housing 3 includes sealing washer 301, sealing washer 301 is located between stop valve body 1 and the upper cover 4 and contacts with stop valve body 1 and the opposite one side of upper cover 4, the bottom integrated into one piece of sealing washer 301 has valve housing 302, valve housing 302 is located the inside of stop valve body 1, two bar spouts 8 are seted up respectively in the left and right sides of valve housing 302, will have sealing washer 301 to press from both sides between the two through stop valve body 1 and upper cover 4, when fixed stop valve body 1 and upper cover 4, utilize sealing washer 301 to seal the gap between stop valve body 1 and the upper cover 4, avoid liquid to flow out from the gap of stop valve body 1 and upper cover 4, through valve housing 302, make things convenient for the up-and-down slip of valve core assembly 7, the slip of restriction valve core assembly 7 simultaneously.

Further, the top and the equal fixedly connected with leak-stopping ring 10 in bottom of sealing washer 301, embedding annular 11 has all been seted up to relative one side of stop valve body 1 and upper cover 4, one side that sealing washer 301 was kept away from to two leak-stopping rings 10 extends to the inside of two embedding annular 11 respectively and with the inner wall contact of embedding annular 11, cooperation through leak-stopping ring 10 and embedding annular 11, form annular seal structure, increase stop valve body 1, the area of contact of upper cover 4 and sealing washer 301, further seal the gap between the three, improve sealed effect.

Further, sealing mechanism 6 includes solid fixed ring 601, gu fixed ring 601 overlaps to be located on rotating screw rod 5 and rotate with rotating screw rod 5 and be connected, gu fixed ring 601's bottom fixedly connected with spring 602, spring 602 overlaps to be located on rotating screw rod 5, the cover is equipped with rather than sliding connection's sealed pad 603 on the rotating screw rod 5, the bottom of spring 602 and the top fixed connection of sealed pad 603, the bottom of sealed pad 603 and the interior diapire contact of upper cover 4, rotate screw rod 5 through rotating, drive solid fixed ring 601 and descend, the length of compression spring 602 simultaneously, make it have elasticity, and then exert thrust downwards to the sealed pad 603 of spring 602 bottom, let sealed pad 603 and the interior diapire in close contact with of upper cover 4, improve the sealed effect of rotating screw rod 5 and upper cover 4 department of running through.

Furthermore, the rotating screw 5 is sleeved with a piston 12 fixedly connected with the rotating screw, the piston 12 is positioned on the inner side of the sealing valve core sleeve 3 and is in sliding connection with the inner wall of the sealing valve core sleeve 3, the piston 12 seals the communication between the sealing valve core sleeve 3 and the stop valve body 1, so that the liquid is prevented from permeating into the upper part of the piston 12 and further enters the upper cover 4, and the sealing effect is improved.

Furthermore, the rotating screw 5 is sleeved with an adjusting nut 13 in threaded connection with the rotating screw, the adjusting nut 13 is positioned at the top of the upper cover 4 and is in contact with the upper cover 4, the position of the adjusting nut 13 on the rotating screw 5 is adjusted by rotating the adjusting nut 13, and when the bottom of the adjusting nut 13 is in contact with the top of the upper cover 4, the rotating screw 5 can be prohibited from continuously rotating downwards, so that the effect of limiting the rotation of the rotating screw 5 is achieved.

Further, the equal fixedly connected with restriction piece 14 in the inside left and right sides of upper cover 4, two restriction pieces 14 all are located sealing mechanism 6's top, two restriction pieces 14 are located the left and right sides of rotating screw rod 5 respectively and with rotate screw rod 5 threaded connection, threaded connection through two restriction pieces 14 and rotating screw rod 5, increase and rotate 5 fulcrums of screw rod, through upper cover 4, restriction piece 14 and the case assembly 7 of rotating screw rod 5 bottom, synchronous restriction rotates the slip of screw rod 5, improve the stability of rotating screw rod 5, prevent to rotate screw rod 5 and receive high pressure flow and cause the stop valve to produce the gap, make the closed effect and the leak-proof effect of stop valve reduce.

The working principle is as follows: the bottom opening of the stop valve body 1 is sealed through the bottom cover 2, when the stop valve is closed or opened, the internal pressure of the stop valve body 1 is instantaneously increased, the sealing ring 301 is clamped between the stop valve body 1 and the upper cover 4, when the stop valve body 1 and the upper cover 4 are fixed, the sealing ring 301 is used for sealing a gap between the stop valve body 1 and the upper cover 4, an annular sealing structure is formed through the matching of the leakage stopping ring 10 and the embedding ring groove 11, the contact area of the stop valve body 1, the upper cover 4 and the sealing ring 301 is increased, gaps among the three parts are further sealed, the sealing effect is improved, liquid is prevented from flowing out from the gap between the stop valve body 1 and the upper cover 4, the valve sleeve 302 is convenient to slide up and down of the valve core assembly 7, meanwhile, the sliding of the valve core assembly 7 is limited, the limiting slide block 9 is matched with the strip-shaped sliding groove 8, and the valve core assembly, the straight up and down of the valve core assembly 7 and the rotating screw rod 5 are ensured, no gap is generated when the valve core assembly 7 is contacted with the inner wall of the stop valve body 1 due to shaking, the closing effect of the stop valve is improved, meanwhile, the valve core assembly 7 can not drive the rotating screw rod 5 to shake, the left and right movement of the penetrating part of the rotating screw rod 5 and the upper cover 4 is prevented, the sealing effect is better, the rotating screw rod 5 is rotated to drive the fixing ring 601 to descend, the length of the spring 602 is compressed to have elasticity, further, the downward thrust is applied to the sealing gasket 603 at the bottom of the spring 602, the sealing gasket 603 is tightly contacted with the inner bottom wall of the upper cover 4, the sealing effect of the penetrating part of the rotating screw rod 5 and the upper cover 4 is improved, the sealing effect of the stop valve is better, the position of the sealing gasket on the rotating screw rod 5 is adjusted by rotating the, the rotating screw 5 can be prohibited from rotating downwards continuously, the effect of limiting the rotation of the rotating screw 5 is achieved, the control is simpler, and the operation of a user is facilitated.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A throttle stop valve, includes stop valve body (1), its characterized in that: the bottom of the stop valve body (1) is fixedly provided with a bottom cover (2), the top of the stop valve body (1) is inserted with a sealing valve core sleeve (3), the bottom of the sealing valve core sleeve (3) extends into the stop valve body (1), the top of the sealing valve core sleeve (3) is contacted with an upper cover (4), the top of the upper cover (4) is fixedly connected with the stop valve body (1), the top of the upper cover (4) is in threaded connection with a rotating screw (5), the bottom end of the rotating screw (5) sequentially penetrates through the upper cover (4) and the sealing valve core sleeve (3) and extends to the inner side of the sealing valve core sleeve (3), the rotating screw (5) is sleeved with a sealing mechanism (6) fixedly connected with the rotating screw, the sealing mechanism (6) is positioned in the upper cover (4) and is contacted with the inner bottom wall of the upper cover (4), the bottom end of the rotating screw (5) is rotatably connected with a valve core assembly (7), the stop valve is characterized in that the valve core assembly (7) is located on the inner side of the sealing valve core sleeve (3) and is in sliding connection with the sealing valve core sleeve (3), the bottom of the valve core assembly (7) is in close contact with the inner wall of the stop valve body (1), the strip-shaped sliding grooves (8) are formed in the left side and the right side of the sealing valve core sleeve (3), the limiting sliding blocks (9) are fixedly connected to the left side and the right side of the valve core assembly (7), and the two limiting sliding blocks (9) are in sliding connection with the two strip-shaped sliding grooves (8) respectively.

2. The throttle stop valve according to claim 1, wherein: the sealing valve core sleeve (3) comprises a sealing ring (301), the sealing ring (301) is located between the stop valve body (1) and the upper cover (4) and is in contact with one side, opposite to the stop valve body (1) and the upper cover (4), of the sealing ring (301), a valve sleeve (302) is integrally formed at the bottom of the sealing ring (301), the valve sleeve (302) is located inside the stop valve body (1), and the two strip-shaped sliding grooves (8) are respectively arranged on the left side and the right side of the valve sleeve (302).

3. The throttle stop valve according to claim 2, wherein: the top and the equal fixedly connected with leak-stopping ring (10) in bottom of sealing washer (301), embedding annular (11), two have all been seted up with relative one side of upper cover (4) to stop valve body (1) one side that sealing washer (301) were kept away from in leak-stopping ring (10) extend respectively to the inside of two embedding annular (11) and with the inner wall contact of embedding annular (11).

4. The throttle stop valve according to claim 1, wherein: sealing mechanism (6) includes solid fixed ring (601), gu fixed ring (601) cover is located and is rotated on rotating screw rod (5) and rotate with rotating screw rod (5) and be connected, the bottom fixedly connected with spring (602) of solid fixed ring (601), on rotating screw rod (5) is located to spring (602) cover, it is equipped with rather than sliding connection's sealed pad (603) to rotate to go up the cover in screw rod (5), the bottom of spring (602) and the top fixed connection who seals up pad (603), the bottom of sealed pad (603) and the interior diapire contact of upper cover (4).

5. The throttle stop valve according to claim 1, wherein: the rotary screw (5) is sleeved with a piston (12) fixedly connected with the rotary screw, and the piston (12) is positioned on the inner side of the sealing valve core sleeve (3) and is in sliding connection with the inner wall of the sealing valve core sleeve (3).

6. The throttle stop valve according to claim 1, wherein: the rotary screw rod (5) is sleeved with an adjusting nut (13) in threaded connection with the rotary screw rod, and the adjusting nut (13) is located at the top of the upper cover (4) and is in contact with the upper cover (4).

7. The throttle stop valve according to claim 1, wherein: the left side and the right side of the inner portion of the upper cover (4) are fixedly connected with limiting blocks (14), the limiting blocks (14) are located at the top of the sealing mechanism (6), and the limiting blocks (14) are located on the left side and the right side of the rotating screw rod (5) respectively and are in threaded connection with the rotating screw rod (5).