CN216158293U

CN216158293U - High-pressure stop valve of stability

Info

Publication number: CN216158293U
Application number: CN202122140760.0U
Authority: CN
Inventors: 吴磊; 张国明
Original assignee: Suzhou Tesco Fluid Control Equipment Co ltd
Current assignee: Suzhou Tesco Fluid Control Equipment Co ltd
Priority date: 2021-09-06
Filing date: 2021-09-06
Publication date: 2022-04-01
Anticipated expiration: 2031-09-06

Abstract

The utility model discloses a high-pressure stop valve with high stability, which comprises a valve body, wherein a stop cavity is formed in the middle of the valve body, a conveying cavity communicated with the stop cavity is formed in the lower part of the valve body, a liquid outlet cavity communicated with the conveying cavity is formed in the left side of the interior of the valve body, a liquid inlet cavity communicated with the stop cavity is formed in the right side of the interior of the valve body, a valve core is arranged in the stop cavity, when the flow needs to be stopped, a hand wheel is rotated to drive a threaded rod to rotate, the threaded rod is in threaded connection with the inner wall of a sleeve, so that the sleeve and the valve core are driven to move downwards, the bottom of the stop cavity is blocked, the flow stopping effect is realized, when the sleeve moves downwards, a sliding sleeve moves downwards along the inner wall of a fixed pipe, and simultaneously teeth of the sleeve slide upwards and downwards in a limiting tooth groove, so that the sleeve can be prevented from rotating when the threaded rod rotates, and the valve core of the stop valve can not move upwards and downwards, the stability is high.

Description

High-pressure stop valve of stability

Technical Field

The utility model relates to the technical field of stop valves, in particular to a high-pressure stop valve with high stability.

Background

The valve is widely used in daily life and in work of people, the stop valve plays an important role in cutting off and throttling media in a pipeline where the stop valve is located, and the closing principle of the stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of a valve port in the valve body by means of the pressure of the valve rod to prevent the media from flowing.

The motion form of the valve rod (the general name is a hidden rod) and a lifting rotary rod type can be used for controlling the flow of various types of fluids such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a high-pressure stop valve with high stability so as to solve the problems in the prior art.

In order to achieve the purpose, the utility model provides the following technical scheme:

a high-pressure stop valve with high stability comprises a valve body, wherein a stop cavity is formed in the middle of the valve body, a communicating conveying cavity which is arranged at the inner lower part of the valve body and is positioned in the stop cavity is formed in the left side of the inner part of the valve body, a liquid outlet cavity which is communicated with the conveying cavity is formed in the left side of the inner part of the valve body, a liquid inlet cavity which is communicated with the stop cavity is formed in the right side of the inner part of the valve body, a valve core is arranged in the stop cavity, a packing cover plate is connected to the upper end face of the valve body through a bolt, a fixing pipe is fixedly connected to the upper end face of the packing cover plate, a fixing seat is fixedly connected to the top end of the fixing pipe, a threaded rod is penetrated through the upper end face of the fixing seat in a rotating manner, a hand wheel is fixedly connected to the top end of the threaded rod, a sleeve is penetrated through the upper end face of the packing cover plate in a rotating manner, the bottom end of the sleeve extends into the stop cavity, the bottom end of the sleeve is fixedly connected with the valve core, and the lower end of the threaded rod extends into the sleeve, the threaded rod is in threaded connection with the inner wall of the sleeve, the sliding sleeve is fixedly sleeved on the outer surface of the upper portion of the sleeve and is in sliding connection with the inner wall of the fixed pipe, the gear is fixedly sleeved on the outer surface of the lower portion of the sleeve, the limiting sleeve is fixedly connected to the inner wall of the stop cavity, a plurality of limiting tooth grooves corresponding to gear teeth are formed in the annular inner wall of the limiting sleeve, and the gear teeth are inserted into the corresponding limiting tooth grooves in a sliding mode.

Preferably, a packing groove is formed in the upper end face of the valve body, and a sleeve packing is arranged inside the packing groove.

Preferably, the upper end face of the fixing seat is provided with an annular through groove, a bearing is fixedly connected inside the annular through groove, and the bearing is rotatably sleeved on the outer surface of the threaded rod.

Preferably, a non-return cavity is formed in the liquid outlet cavity, a sealing block is connected to the non-return cavity in a sliding mode, and a spring is fixedly connected between the sealing block and the inner left side wall of the non-return cavity.

Preferably, the outer surface of the hand wheel is provided with a plurality of anti-skid threads, and the left end surface and the right end surface of the valve body are provided with a plurality of thread grooves distributed in an annular manner.

Preferably, the outer surface of the valve core is wrapped with a microcrystalline glass wear-resistant layer, and a sealing ring is arranged at the inner bottom end of the cut-off cavity.

Compared with the prior art, the utility model has the beneficial effects that: the high-pressure stop valve is convenient to use and simple to operate, when the cut-off is needed, the hand wheel is rotated, the hand wheel rotates to drive the threaded rod to rotate, the threaded rod is in threaded connection with the inner wall of the sleeve, so that the sleeve and the valve core are driven to move downwards, the bottom of the cut-off cavity is blocked, the cut-off effect is realized, when the sleeve moves downwards, the sliding sleeve moves downwards along the inner wall of the fixed pipe, and the teeth of the gear slide up and down in the limiting tooth grooves, so that the phenomenon that the sleeve rotates along with the rotation when the threaded rod rotates can be avoided, the valve core of the stop valve cannot move up and down, and the stability is high; the threaded rod can stably rotate through the bearing, so that the high stability of the stop valve is further improved; when the fluid medium flows normally, the flowing pressure of the fluid medium is greater than the elastic force of the spring, so that the sealing block moves leftwards, the flowing medium flows normally, when the fluid medium flows backwards, the pressure of the spring is greater than the pressure during backflow, the sealing block moves rightwards, the liquid outlet cavity is blocked, and the backflow situation is avoided; can improve the wearability of this case through microcrystalline glass wearing layer, and then improve the life of this stop valve, the sealing performance when stopping up the chamber through the multiplicable case of sealing washer.

Drawings

FIG. 1 is a schematic sectional elevation view of a high-stability high-pressure stop valve;

FIG. 2 is a schematic view of a hand wheel structure of a high-stability high-pressure stop valve;

fig. 3 is a schematic diagram of a stop collar structure of a high-pressure stop valve with high stability.

In the figure: 1-valve body, 2-gear, 3-sleeve, 4-sliding sleeve, 5-fixed seat, 6-bearing, 7-threaded rod, 8-hand wheel, 9-fixed tube, 10-packing cover plate, 11-sleeve, 12-limiting sleeve, 13-valve core, 14-liquid inlet cavity, 15-sealing ring, 16-conveying cavity, 17-sealing block, 18-non-return cavity, 19-spring, 20-liquid outlet cavity, 21-thread groove, 22-stop cavity and 23-limiting tooth groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, the present invention provides a technical solution: a high-pressure stop valve with high stability comprises a valve body 1, wherein a stop cavity 22 is formed in the middle of the valve body 1, a conveying cavity 16 communicated with the stop cavity 22 is formed in the inner lower portion of the valve body 1, a liquid outlet cavity 20 communicated with the conveying cavity 16 is formed in the left side of the inner portion of the valve body 1, a liquid inlet cavity 14 communicated with the stop cavity 22 is formed in the right side of the inner portion of the valve body 1, a valve core 13 is arranged in the stop cavity 22, a packing cover plate 10 is connected to the upper end face of the valve body 1 through a bolt, a fixing pipe 9 is fixedly connected to the upper end face of the packing cover plate 10, a fixing seat 5 is fixedly connected to the top end of the fixing pipe 9, a threaded rod 7 is rotatably penetrated through the upper end face of the fixing seat 5, a hand wheel 8 is fixedly connected to the top end face of the threaded rod 7, a sleeve 11 is rotatably penetrated through the upper end face of the packing cover plate 10, and the bottom end of the sleeve 11 extends into the stop cavity 22, the bottom end of the sleeve 11 is fixedly connected with the valve core 13, the lower end of the threaded rod 7 extends into the sleeve 11, the threaded rod 7 is in threaded connection with the inner wall of the sleeve 11, a sliding sleeve 4 is fixedly sleeved on the outer surface of the upper portion of the sleeve 11, the sliding sleeve 4 is in sliding connection with the inner wall of the fixed pipe 9, the gear 2 is fixedly sleeved on the outer surface of the lower portion of the sleeve 11, a limiting sleeve 12 is fixedly connected to the inner wall of the stop cavity 22, a plurality of limiting tooth grooves 23 corresponding to the teeth of the gear 2 are formed in the annular inner wall of the limiting sleeve 12, and the teeth of the gear 2 are slidably inserted into the corresponding limiting tooth grooves 23.

During the use, fluid medium gets into from getting into the chamber 14, loop through ending the chamber 22, carry the chamber 16 back to flow out from going out the liquid chamber 20, when needs are dammed, rotate hand wheel 8, hand wheel 8 rotates and drives threaded rod 7 and rotate, because threaded rod 7 and the inner wall threaded connection of sleeve pipe 11, thereby drive sleeve pipe 11 and case 13 downstream, and then will end the bottom of chamber 22 and plug up, realize the effect of damming, when sleeve pipe 11 downstream, sliding sleeve 4 will move down along the inner wall of fixed pipe 9, the tooth of gear 2 slides up and down in spacing tooth's socket 23 simultaneously, thereby sleeve pipe 11 follows the rotation when can avoiding threaded rod 7 to rotate, and then avoid the unable up-and-down motion of case 13 of this stop valve, stability is high.

The packing groove is formed in the upper end face of the valve body 1, the sleeve packing 3 is arranged inside the packing groove, the sealing performance of the stop valve can be improved through the sleeve packing 3, and leakage of fluid media is avoided.

The upper end face of the fixing seat 5 is provided with an annular through groove, a bearing 6 is fixedly connected inside the annular through groove, and the bearing 6 is rotatably sleeved on the outer surface of the threaded rod 7.

Can make threaded rod 7 steady rotation through bearing 6, further improve the high stability of this stop valve.

A non-return cavity 18 is formed in the liquid outlet cavity 20, a sealing block 17 is connected to the non-return cavity 18 in a sliding mode, and a spring 19 is fixedly connected between the sealing block 17 and the inner left side wall of the non-return cavity 18.

When the fluid medium flows normally, the flowing pressure of the fluid medium is greater than the elastic force of the spring 19, so that the sealing block 17 moves leftwards, the flowing medium flows normally, when the fluid medium flows backwards, the pressure of the spring 19 is greater than the pressure during backflow, the sealing block 17 moves rightwards, the liquid outlet cavity 20 is blocked, and the backflow situation is avoided.

A plurality of anti-skidding lines have been seted up to the surface of hand wheel 8, a plurality of annular threaded groove 21 that distribute have all been seted up to the terminal surface about valve body 1, can improve hand wheel 8's frictional force through anti-skidding line, and the personnel of being convenient for rotate hand wheel 8, are convenient for this stop valve through threaded groove 21 and connect external pipeline.

The outer surface of the valve core 13 is wrapped with a microcrystalline glass wear-resistant layer, the inner bottom end of the stop cavity 22 is provided with a sealing ring 15, the wear-resistant capacity of the valve core 13 can be improved through the microcrystalline glass wear-resistant layer, the service life of the stop valve is further prolonged, and the sealing capacity of the valve core 13 when the stop cavity 22 is blocked can be increased through the sealing ring 15.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a high pressure stop valve of stability, includes valve body (1), its characterized in that: a stop cavity (22) is formed in the middle of the valve body (1), a liquid outlet cavity (20) communicated with the conveying cavity (16) is formed in the inner lower portion of the valve body (1) and is located in a communicated conveying cavity (16) of the stop cavity (22), a liquid inlet cavity (14) communicated with the stop cavity (22) is formed in the inner right side of the valve body (1), a valve core (13) is arranged in the stop cavity (22), a packing cover plate (10) is connected to the upper end face of the valve body (1) through a bolt, a fixing pipe (9) is fixedly connected to the upper end face of the packing cover plate (10), a fixing seat (5) is fixedly connected to the top end face of the fixing seat (5), a threaded rod (7) is arranged in a rotating mode, a hand wheel (8) is fixedly connected to the top end face of the packing cover plate (10), a sleeve (11) is arranged in a rotating mode, the bottom of sleeve pipe (11) stretches into the inside of ending chamber (22), and the bottom and case (13) fixed connection of sleeve pipe (11), the lower extreme of threaded rod (7) stretches into the inside of sleeve pipe (11), and the inner wall threaded connection of threaded rod (7) and sleeve pipe (11), the fixed cover of upper portion surface of sleeve pipe (11) is equipped with sliding sleeve (4), the inner wall sliding connection of sliding sleeve (4) and fixed pipe (9), the fixed cover of lower part surface of sleeve pipe (11) is equipped with gear (2), the inner wall fixedly connected with stop collar (12) of ending chamber (22), a plurality of spacing tooth's socket (23) corresponding with gear (2) tooth are seted up to the annular inner wall of stop collar (12), the tooth of gear (2) slides and pegs graft in corresponding spacing tooth's socket (23).

2. A high stability high pressure shut off valve as defined in claim 1, wherein: the upper end face of the valve body (1) is provided with a packing groove, and a sleeve packing (3) is arranged in the packing groove.

3. A high stability high pressure shut off valve as defined in claim 2, wherein: the upper end face of fixing base (5) has been seted up the annular and has been led to the groove, and the inside fixedly connected with bearing (6) that the annular led to the groove, bearing (6) are rotated the cover and are established the surface at threaded rod (7).

4. A high stability high pressure shut off valve as defined in claim 3, wherein: a non-return cavity (18) is formed in the liquid outlet cavity (20), a sealing block (17) is connected to the inner portion of the non-return cavity (18) in a sliding mode, and a spring (19) is fixedly connected between the sealing block (17) and the inner left side wall of the non-return cavity (18).

5. The high-stability high-pressure stop valve according to claim 4, wherein: the outer surface of the hand wheel (8) is provided with a plurality of anti-skid threads, and the left end surface and the right end surface of the valve body (1) are provided with a plurality of thread grooves (21) distributed in an annular shape.

6. The high-stability high-pressure stop valve according to claim 5, wherein: the outer surface of the valve core (13) is wrapped with a microcrystalline glass wear-resistant layer, and a sealing ring (15) is arranged at the inner bottom end of the cut-off cavity (22).