CN215568015U

CN215568015U - Stop valve seal structure that compressive capacity is high

Info

Publication number: CN215568015U
Application number: CN202121391322.5U
Authority: CN
Inventors: 徐魁生
Original assignee: Jiangsu Huashan Valve Co ltd
Current assignee: Jiangsu Huashan Valve Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2022-01-18
Anticipated expiration: 2031-06-22

Abstract

The utility model discloses a stop valve sealing structure with high pressure resistance, relates to the technical field of stop valves, and aims to solve the problems that the sealing structure of a common stop valve in the prior art is not stable enough in operation and weak in pressure resistance. The valve comprises a valve body and is characterized in that a valve liner is arranged inside the valve body, the valve liner and the valve body are arranged into an integral structure, a valve core is arranged on the inner side of the valve liner, the valve core is attached to the valve liner, a screw rod and a stabilizing shaft are respectively arranged on the inner side of the valve core, the screw rod is in threaded connection with the valve core, the stabilizing shaft is in sliding connection with the valve core, a valve cover is installed above the valve body and is fixedly connected with the valve body through bolts, a valve bottom is installed below the valve body and is fixedly connected with the valve body through bolts, and the valve cover and the valve bottom are fixedly connected with the stabilizing shaft through sealing bolts.

Description

Stop valve seal structure that compressive capacity is high

Technical Field

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

Background

The stop valve is also called stop valve, belonging to forced sealing type valve, so when the valve is closed, it must apply pressure to valve clack to force sealing surface not to leak, when the medium is fed into the valve from below the valve clack, the resistance force which must be overcome by operation force is the friction force of valve stem and packing material and the thrust force produced by pressure of medium, the force for closing the valve is greater than the force for opening the valve, so the diameter of valve stem is greater, otherwise the failure of stem top bending can occur.

In the conventional stop valve on the market at present, a valve rod moves along with a valve core, the pressure of the valve core is completely acted on the valve rod, and the valve core is limited by the valve rod, so that the pressure resistance of the integral sealing structure is weakened, and the valve rod is easily damaged when the water pressure is too high; therefore, the market urgently needs to develop a stop valve sealing structure with high pressure resistance to help people solve the existing problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a stop valve sealing structure with high pressure resistance, and aims to solve the problems that the sealing structure of a common stop valve provided in the background art is not stable enough in operation and weak in pressure resistance.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a stop valve seal structure that compressive capacity is high, includes the valve body, the inside of valve body is provided with the valve liner, and the valve liner sets up structure as an organic whole with the valve body, the inboard of valve liner is provided with the case, and case and valve liner laminating, the inboard of case is provided with screw rod and stable axle respectively, screw rod and case threaded connection, stable axle and case sliding connection.

Preferably, the valve gap is installed to the top of valve body, and the valve gap passes through bolt fixed connection with the valve body, at the bottom of the valve is installed to the below of valve body, and at the bottom of the valve pass through bolt fixed connection with the valve body, all through sealing bolt and steady axle fixed connection at the bottom of valve gap and the valve.

Preferably, the top of screw rod is provided with the valve rod, and valve rod and screw rod set up structure as an organic whole, sealed lid is installed to the top of valve gap, and sealed lid passes through sealing screw fixed connection with the valve gap.

Preferably, the protective housing is installed above the sealing cover, the protective housing is fixedly connected with the sealing cover through a fastening screw, the shaft seat is installed above the sealing cover, and the shaft seat is fixedly connected with the sealing cover.

Preferably, the inside mounting of protective housing has the worm, and the worm passes through the bearing rotation with the protective housing and is connected, the outside of protective housing is provided with the hand wheel, hand wheel and worm fixed connection.

Preferably, the two sides of the valve body are respectively provided with a first flange and a second flange, the first flange and the second flange are both arranged into an integral structure with the valve body, the inside of the valve body is respectively provided with a first water tank and a second water tank, and the first water tank and the second water tank are both arranged into an integral structure with the valve body.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model discloses a setting through stabilizing axle and screw rod, screw rod and valve rod structure as an organic whole, and whole valve rod is remain motionless, the top and the below of valve rod are fixed through axle bed and valve bottom respectively, and rotate between the two and be connected, and screw rod and case threaded connection, stabilize the removal that the axle is used for restricting the case, make the case more stable when reciprocating, and the transverse force when removing will be undertaken by stabilizing the axle, on the one hand fixed valve rod, make the valve rod need not to follow the case and remove, in addition, increase the steady axle, improve the inside seal structure's of stop valve whole compressive capacity, make the valve shaft be difficult to damage, the life of stop valve is improved.

2. The utility model discloses a through the setting of worm, worm and gear interlock, the gear is fixed with the valve rod, and accessible gear drives the valve rod and rotates when the worm rotates, and when the valve rod rotates, the effect of locking is played with the interlock of worm to increase the locking effect of this valve body case at the during operation, make the case leakproofness stronger, make the sealed effect of seal structure of this stop valve better.

Drawings

FIG. 1 is a schematic view showing the internal structure of a high pressure-resistant seal structure for a stop valve according to the present invention;

FIG. 2 is an enlarged schematic view at A of the present invention;

fig. 3 is an enlarged schematic view at B in the figure of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve bottom; 4. a sealing cover; 5. a protective shell; 6. a screw; 7. a valve stem; 8. a stabilizing shaft; 9. a first flange plate; 10. a second flange plate; 11. a first water compartment; 12. a second water compartment; 13. a valve liner; 14. a shaft seat; 15. a hand wheel; 16. a valve core; 17. a sealing head; 18. a worm; 19. a gear.

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.

Referring to fig. 1-3, an embodiment of the present invention is shown: the utility model provides a stop valve seal structure that compressive capacity is high, includes valve body 1, and the inside of valve body 1 is provided with valve liner 13, and valve liner 13 sets up structure as an organic whole with valve body 1, and the inboard of valve liner 13 is provided with case 16, and case 16 and the laminating of valve liner 13, the inboard of case 16 are provided with screw rod 6 and stable axle 8 respectively,

screw rod

6 and 16 threaded connection of case,

stable axle

8 and 16 sliding connection of case.

Further, valve gap 2 is installed to the top of valve body 1, and valve gap 2 passes through bolt fixed connection with valve body 1, and 3 at the bottom of the valve is installed to the below of valve body 1, and 3 at the bottom of the valve passes through bolt fixed connection with valve body 1, and valve gap 2 and 3 at the bottom of the valve all through sealing bolt and stable axle 8 fixed connection, and stable axle 8 is provided with two.

Further, a valve rod 7 is arranged above the screw rod 6, the valve rod 7 and the screw rod 6 are arranged to be of an integrated structure, a sealing cover 4 is installed above the valve cover 2, the sealing cover 4 is fixedly connected with the valve cover 2 through a sealing screw, the connecting portion of the stabilizing shaft 8 and the valve cover 2 is sealed through the sealing cover 4, and a sealing ring is arranged between the valve rod 7 and the valve cover 2.

Further, a protective shell 5 is installed above the sealing cover 4, the protective shell 5 is fixedly connected with the sealing cover 4 through a fastening screw, a shaft seat 14 is installed above the sealing cover 4, the shaft seat 14 is fixedly connected with the sealing cover 4, sealing heads 17 are installed above and below the valve core 16, the sealing heads 17 are used for sealing the joint of the stabilizing shaft 8 and the valve core 16, and the sealing heads 17 are connected with the stabilizing shaft 8 in a sliding mode.

Further, a worm 18 is installed inside the protective shell 5, the worm 18 is rotatably connected with the protective shell 5 through a bearing, a hand wheel 15 is arranged on the outer side of the protective shell 5, the hand wheel 15 is fixedly connected with the worm 18, a gear 19 is installed above the valve rod 7, the gear 19 is fixedly connected with the valve rod 7, and the gear 19 is connected with the worm 18 in an engaged manner.

Further, a first flange 9 and a second flange 10 are respectively arranged on two sides of the valve body 1, the first flange 9 and the second flange 10 are both integrated with the valve body 1, a first water tank 11 and a second water tank 12 are respectively arranged inside the valve body 1, the first water tank 11 and the second water tank 12 are both integrated with the valve body 1, the valve body 1 is divided into a first water tank 11 and a second water tank 12 by a valve liner 13, and a communicating part between the first water tank 11 and the second water tank 12 is blocked by a valve core 16.

The working principle is as follows: when the water pipe valve is used, the valve body 1 is connected to a water pipe through the first flange 9 and the second flange 10, water in the water pipe is stored in the first water tank 11 or the second water tank 12, when a channel of the water pipe needs to be communicated, the worm 18 is driven to rotate through the hand wheel 15, the worm 18 drives the gear 19 to rotate, the gear 19 drives the valve rod 7 and the screw 6 to rotate, the screw 6 is in threaded connection with the valve core 16, when the screw 6 rotates, the valve core 16 moves upwards, the valve core 16 is extracted from a communication position of the first water tank 11 and the second water tank 12, the first water tank 11 is communicated with the second water tank 12, the whole water pipe is smooth, and when the water pipe needs to be stopped, otherwise, the valve core 16 is blocked at the communication position of the first water tank 11 and the second water tank 12.

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.

Claims

1. The utility model provides a stop valve seal structure that compressive capacity is high, includes valve body (1), its characterized in that: the novel valve is characterized in that a valve liner (13) is arranged inside the valve body (1), the valve liner (13) and the valve body (1) are arranged into an integral structure, a valve core (16) is arranged on the inner side of the valve liner (13), the valve core (16) is attached to the valve liner (13), a screw rod (6) and a stabilizing shaft (8) are respectively arranged on the inner side of the valve core (16), the screw rod (6) is in threaded connection with the valve core (16), and the stabilizing shaft (8) is in sliding connection with the valve core (16).

2. The high pressure resistant stop valve seal structure of claim 1, wherein: valve gap (2) are installed to the top of valve body (1), and valve gap (2) pass through bolt fixed connection with valve body (1), at the bottom of the valve (3) is installed to the below of valve body (1), and at the bottom of the valve (3) pass through bolt fixed connection with valve body (1), all through sealing bolt and stable axle (8) fixed connection at the bottom of valve gap (2) and the valve (3).

3. The high pressure resistant stop valve seal structure of claim 2, wherein: the valve is characterized in that a valve rod (7) is arranged above the screw rod (6), the valve rod (7) and the screw rod (6) are arranged into an integral structure, a sealing cover (4) is arranged above the valve cover (2), and the sealing cover (4) is fixedly connected with the valve cover (2) through sealing screws.

4. The high pressure resistant stop valve seal structure of claim 3, wherein: protective housing (5) is installed to the top of sealed lid (4), and protective housing (5) passes through fastening screw fixed connection with sealed lid (4), axle bed (14) are installed to the top of sealed lid (4), and axle bed (14) and sealed lid (4) fixed connection.

5. The high pressure resistant stop valve seal structure of claim 4, wherein: the worm gear type worm gear mechanism is characterized in that a worm (18) is arranged inside the protective shell (5), the worm (18) is rotatably connected with the protective shell (5) through a bearing, a hand wheel (15) is arranged on the outer side of the protective shell (5), and the hand wheel (15) is fixedly connected with the worm (18).

6. The high pressure resistant stop valve seal structure of claim 1, wherein: the two sides of the valve body (1) are respectively provided with a first flange plate (9) and a second flange plate (10), the first flange plate (9) and the second flange plate (10) are arranged into an integral structure with the valve body (1), the inside of the valve body (1) is respectively provided with a first water tank (11) and a second water tank (12), and the first water tank (11) and the second water tank (12) are arranged into an integral structure with the valve body (1).