CN217234415U

CN217234415U - High-efficient balanced pressure stop valve

Info

Publication number: CN217234415U
Application number: CN202221087002.5U
Authority: CN
Inventors: 林理泽; 林展; 张波; 林圣远; 程友根
Original assignee: Zhengmao Valve Co ltd
Current assignee: Zhengmao Valve Co ltd
Priority date: 2022-05-05
Filing date: 2022-05-05
Publication date: 2022-08-19
Anticipated expiration: 2032-05-05

Abstract

The utility model belongs to the stop valve field, in particular to a high-efficiency pressure-balancing stop valve, which comprises a valve body, a communicating pipe, a valve cover and a low-friction switch unit; communicating pipes are symmetrically communicated and fixedly connected with the two sides of the valve body; the upper end opening of the valve body is detachably, hermetically and fixedly connected with a valve cover; a low-friction switch unit is arranged on the valve cover; the low-friction switch unit comprises a packing gland and a coaxial limiting cover; a valve rod is inserted in the inner thread of the valve cover; the low-resistance rotation of the half limiting ring is connected in the limiting rotation groove, so that the valve core and the valve rod are kept in low-resistance operation, the valve core cannot rotate along with the valve rod and only rises in the rotating and rising process of the valve rod due to the fact that the contact area and the friction force of the valve core and the switch groove are larger than the friction force of the half limiting ring and the limiting rotation groove, and the friction between the valve core and the switch groove is reduced, and the service life of the valve core is prolonged.

Description

High-efficient balanced pressure stop valve

Technical Field

The utility model relates to a stop valve field specifically is a high-efficient balanced pressure stop valve.

Background

The stop valve is one of valves, belongs to a forced sealing valve, can interrupt a pipeline in a pipeline system, and has a medium valve in a full-open state and a full-closed state, so that the flow rate of a medium flowing through the medium valve cannot be regulated; the closing resistance of the stop valve is greater than the opening resistance, resulting in a large frictional force when closing and a small frictional force when opening.

The valve core of the existing stop valve is fixed on the valve rod, and the valve body is blocked by ascending and descending along with the rotation of the valve rod, so that the function of opening and closing is realized, and therefore, the friction between the valve core and the valve body is generated in each opening and closing process, so that the clearance between the valve core and the valve body is increased in the long-term use process, and the sealing performance is reduced; therefore, an efficient balanced pressure shut-off valve is proposed to address the above problems.

SUMMERY OF THE UTILITY MODEL

In order to compensate prior art's not enough, the friction of solving case and valve body all produces at the switch in-process each time, leads to at the in-process of long-term use, and case and valve body and clearance increase lead to the problem that the leakproofness descends, the utility model provides a high-efficient balanced pressure stop valve.

The utility model provides a technical scheme that its technical problem adopted is: the utility model relates to a high-efficiency pressure-balancing stop valve, which comprises a valve body, a communicating pipe, a valve cover and a low-friction switch unit; communicating pipes are symmetrically communicated and fixedly connected with the two sides of the valve body; the upper end opening of the valve body is detachably, hermetically and fixedly connected with a valve cover; a low-friction switch unit is arranged on the valve cover; the low-friction switch unit comprises a packing gland and a coaxial limiting cover; a valve rod is inserted in the inner thread of the valve cover; a plurality of sealing fillers are sleeved in the valve cover corresponding to the valve rod; a packing gland is fixedly connected to the valve cover corresponding to the sealing packing thread; a coaxial limiting cover is sleeved on the valve cover corresponding to the packing gland and the valve rod in a threaded manner; the upper end of the valve rod is sleeved with a switch rotating handle; the upper end of the valve rod is sleeved with an anti-falling limit cover corresponding to the switch rotating handle thread; a limiting rotation groove is formed in the circumference of the lower end of the valve rod; a half-and-half limiting ring is rotatably sleeved on the limiting rotating groove; the half-and-half limiting rings are fixedly connected in the limiting fixing groove through a first fastening piece; the limiting fixing groove is formed in the valve core; the valve core is inserted in the switch groove; the switch groove is formed in the valve body; during operation, the valve core is connected in the limiting rotation groove in a rotating mode through the half limiting ring and the half limiting ring in a low-resistance rotating mode, so that low-resistance operation is kept between the valve core and the valve rod, the valve core cannot rotate along with the valve rod and only rises in the rotating and rising process of the valve rod due to the fact that the contact area and the friction force of the valve core and the switch groove are larger than the friction force of the half limiting ring and the limiting rotation groove, and therefore friction between the valve core and the switch groove is reduced, and the service life of the valve core is prolonged.

Preferably, the switch rotating handle is fixedly connected with an extension shaft through vertical threads; a second fastening piece is inserted on the extension shaft in a threaded manner; the second fastening piece and the extension shaft are rotatably sleeved with a quick rotating ball; during operation, rotate through gripping quick rolling ball, can realize that the laborsaving quick rotation switch of one hand changes the handle to convenience more is quick when opening the stop valve.

Preferably, the quick rotating ball is circumferentially provided with a soft magnetic ring; the soft magnetic ring is magnetically connected with a seamless cover; the seamless cover is sleeved on the quick rotating ball; during operation, make fixing on quick rolling ball that seamless lid can be stable through soft-magnetic ring to make the more level and smooth of gripping quick rolling ball not cut the hand, the change of rotary switch changes more convenience.

Preferably, a plurality of third fasteners are fixedly connected to the valve body through symmetrical threads; a sealing sleeve is sleeved on the third fastener; the sealing sleeve is inserted in the valve body; when the valve core is in work, after the valve core is in contact friction with the valve core through the sealing sleeve, when the sealing performance is reduced, the sealing sleeve can be replaced to keep the best sealing performance.

Preferably, a plurality of sealing grooves are formed in the inner side surface of the sealing sleeve at intervals; a sealing ring is inserted in the sealing groove; during operation, the sealing ring is inserted in the sealing groove, so that the sealing performance is improved by the sealing ring when the valve core rises to be contacted with the sealing sleeve, and a medium cannot overflow through the valve cover.

Preferably, the seal ring is made of wear-resistant rubber; the sealing sleeve is made of stainless steel; the seamless cover is made of magnetic conductive metal; when the magnetic fixing device works, the fixed soft magnetic ring can be magnetically fixed through the seamless cover made of the magnetic conductive metal, and meanwhile, the seamless cover can be conveniently opened to operate the soft magnetic ring; the sealing ring made of wear-resistant rubber ensures that the service life is long after the sealing ring is contacted with the valve core.

The utility model discloses an useful part lies in:

1. the utility model is connected in the limit rotating groove by the low resistance rotation of the half-and-half limiting ring, so that the low resistance operation is kept between the valve core and the valve rod, and in the process of the rotary rising of the valve rod, because the contact area and the friction force of the valve core and the switch groove are larger than the friction force of the half-and-half limiting ring and the limit rotating groove, the valve core can not rotate along with the valve rod and only rises, thereby reducing the friction between the valve core and the switch groove and prolonging the service life of the valve core;

2. the utility model can stably fix the seamless cover on the rapid rotating ball through the soft magnetic ring, thereby ensuring that the rapid rotating ball is held more smoothly without cutting hands and the rotating handle of the switch is rotated more conveniently; and a sealing ring is inserted in the sealing groove, so that the sealing property when the valve core rises to be contacted with the sealing sleeve is improved by the sealing ring, and a medium cannot overflow through the valve cover.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic sectional view of a shut-off valve according to a first embodiment;

FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;

FIG. 3 is an enlarged view of the structure at B in FIG. 1;

FIG. 4 is an enlarged view of the structure at C in FIG. 1;

FIG. 5 is a schematic perspective sectional view of a fast turning ball according to a first embodiment;

fig. 6 is a schematic sectional front view of the shutoff valve according to the second embodiment.

In the figure: 1. a valve body; 2. a communicating pipe; 3. a valve cover; 4. sealing and filling; 5. a packing gland; 6. a coaxial limit cover; 7. a switch rotating handle; 8. an anti-drop limit cover; 9. a valve stem; 10. a limiting rotation groove; 11. a half limiting ring; 12. a first fastener; 13. a limiting fixing groove; 14. a valve core; 15. a switch slot; 16. an extension shaft; 17. a second fastener; 18. rapidly rotating the ball; 19. a soft magnetic ring; 20. a seamless cover; 21. a third fastener; 22. sealing the sleeve; 23. a sealing groove; 24. a seal ring; 25. a half-and-half heat insulation sleeve; 26. and a fourth fastener.

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 efforts belong to the protection scope of the present invention.

Example one

Referring to fig. 1-5, an efficient balanced pressure stop valve includes a valve body 1, a communicating pipe 2, a valve cover 3 and a low friction switch unit; two sides of the valve body 1 are symmetrically communicated and fixedly connected with communicating pipes 2; an opening at the upper end of the valve body 1 is detachably, hermetically and fixedly connected with a valve cover 3; a low-friction switch unit is arranged on the valve cover 3; the low-friction switch unit comprises a packing gland 5 and a coaxial limit cover 6; a valve rod 9 is inserted in the internal thread of the valve cover 3; a plurality of sealing fillers 4 are sleeved in the valve cover 3 corresponding to the valve rod 9; a packing gland 5 is fixedly connected to the valve cover 3 corresponding to the sealing packing 4 through threads; a coaxial limiting cover 6 is sleeved on the valve cover 3 corresponding to the packing gland 5 and the valve rod 9 in a threaded manner; the upper end of the valve rod 9 is sleeved with a switch rotating handle 7; the upper end of the valve rod 9 is in threaded sleeve connection with an anti-drop limit cover 8 corresponding to the switch rotating handle 7; a limiting rotation groove 10 is formed in the circumference of the lower end of the valve rod 9; a half-and-half limiting ring 11 is rotatably sleeved on the limiting rotating groove 10; the half-and-half limiting ring 11 is fixedly connected in a limiting fixing groove 13 through a first fastening piece 12; the limiting fixing groove 13 is formed in the valve core 14; the valve core 14 is inserted in the switch groove 15; the switch slot 15 is arranged on the valve body 1; during operation, the half limiting ring 11 is connected in the limiting rotation groove 10 in a low-resistance rotation mode, so that the valve core 14 and the valve rod 9 keep low-resistance operation, and in the rotating and rising process of the valve rod 9, because the contact area and the friction force of the valve core 14 and the switch groove 15 are larger than the friction force of the half limiting ring 11 and the limiting rotation groove 10, the valve core 14 cannot rotate along with the valve rod 9 and only rises, the friction between the valve core 14 and the switch groove 15 is reduced, and the service life of the valve core 14 is prolonged.

An extension shaft 16 is fixedly connected to the switch rotating handle 7 through vertical threads; a second fastening piece 17 is inserted on the extension shaft 16 in a threaded manner; the second fastening piece 17 and the extension shaft 16 are rotatably sleeved with a quick rotating ball 18; during operation, the rotating handle 7 can be rotated by holding the quick rotating ball 18 to rotate, so that the single-hand labor-saving quick rotating switch is realized, and the stop valve is more convenient and quick to open.

The circumference of the rapid rotating ball 18 is provided with a soft magnetic ring 19; the soft magnetic ring 19 is magnetically connected with a seamless cover 20; the seamless cover 20 is sleeved on the quick rotating ball 18; when the quick rotating ball handle is in work, the seamless cover 20 can be stably fixed on the quick rotating ball 18 through the soft magnetic ring 19, so that the quick rotating ball 18 can be held more smoothly without cutting hands, and the rotating handle 7 of the switch can be rotated more conveniently.

A plurality of third fasteners 21 are symmetrically and fixedly connected to the valve body 1 through threads; a sealing sleeve 22 is sleeved on the third fastener 21; the sealing sleeve 22 is inserted in the valve body 1; in the case where the sealing performance is lowered by the contact friction with the valve element 14 by the seal sleeve 22 during operation, the sealing performance can be maintained at an optimum level by replacing the seal sleeve 22.

A plurality of sealing grooves 23 are formed in the inner side surface of the sealing sleeve 22 at intervals; a sealing ring 24 is inserted in the sealing groove 23; in operation, the sealing ring 24 is inserted into the sealing groove 23, so that the sealing property when the valve element 14 is lifted up and contacts the seal sleeve 22 is improved by the sealing ring 24, and the medium does not overflow through the bonnet 3.

The seal ring 24 is made of wear-resistant rubber; the sealing sleeve 22 is made of stainless steel; the seamless cover 20 is made of magnetic conductive metal; when the magnetic ring works, the seamless cover 20 made of magnetic conductive metal can be magnetically fixed by the fixed soft magnetic ring 19, and the seamless cover 20 can be conveniently opened to operate the soft magnetic ring 19; the seal ring 24 made of wear-resistant rubber enables the service life to be long after the seal ring is in contact with the valve core 14.

Example two

Referring to fig. 6, as another embodiment of the present invention, in a first comparative example, two half-and-half insulation sleeves 25 are symmetrically sleeved on the valve body 1 and the communicating pipe 2; the half-and-half heat-insulating sleeves 25 are fixedly connected with each other through a fourth fastener 26; the half-and-half heat-insulating sleeves 25 are made of heat-insulating materials; during operation, the half-and-half insulating sleeves 25 made of insulating materials enable the temperature of media in the valve body 1 and the communication pipe 2 to be higher than that of media in other parts in the communication pipe 2, and therefore the valve core 14 cannot be frozen in the switch slot 15.

According to the working principle, the half limiting ring 11 is connected in the limiting rotation groove 10 in a low-resistance rotation mode, so that the valve core 14 and the valve rod 9 keep low-resistance operation, and in the process that the valve rod 9 rotates and rises, as the contact area and the friction force between the valve core 14 and the switch groove 15 are larger than the friction force between the half limiting ring 11 and the limiting rotation groove 10, the valve core 14 cannot rotate along with the valve rod 9 and only rises, so that the friction between the valve core 14 and the switch groove 15 is reduced, and the service life of the valve core 14 is prolonged; the rotating handle 7 can be rapidly rotated by one hand in a labor-saving way by holding the rapid rotating ball 18 to rotate, so that the stop valve can be opened more conveniently and rapidly; the seamless cover 20 can be stably fixed on the quick rotating ball 18 through the soft magnetic ring 19, so that the quick rotating ball 18 can be held more smoothly without cutting hands, and the rotating handle 7 of the switch is more convenient to rotate; when the sealing performance is lowered after the contact friction with the valve element 14 is caused by the sealing sleeve 22, the sealing performance can be maintained to be optimal by replacing the sealing sleeve 22; by inserting the seal ring 24 into the seal groove 23, the sealing performance when the valve core 14 ascends to contact with the seal sleeve 22 is improved by the seal ring 24, so that the medium does not overflow through the bonnet 3; the seamless cover 20 made of magnetic conductive metal can be magnetically fixed by the fixed soft magnetic ring 19, and the seamless cover 20 can be conveniently opened to operate the soft magnetic ring 19; the seal ring 24 made of wear-resistant rubber enables the service life to be long after the seal ring is in contact with the valve core 14.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing shows and describes the basic principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a high-efficient balanced pressure stop valve which characterized in that: comprises a valve body (1), a communicating pipe (2), a valve cover (3) and a low-friction switch unit; the two sides of the valve body (1) are symmetrically communicated and fixedly connected with communicating pipes (2); an opening at the upper end of the valve body (1) is detachably, hermetically and fixedly connected with a valve cover (3); a low-friction switch unit is arranged on the valve cover (3); the low-friction switch unit comprises a packing gland (5) and a coaxial limiting cover (6); a valve rod (9) is inserted in the internal thread of the valve cover (3); a plurality of sealing fillers (4) are sleeved in the valve cover (3) corresponding to the valve rod (9);

a packing gland (5) is fixedly connected to the valve cover (3) corresponding to the sealing packing (4) through threads; a coaxial limiting cover (6) is sleeved on the valve cover (3) corresponding to the packing gland (5) and the valve rod (9) in a threaded manner; the upper end of the valve rod (9) is sleeved with a switch rotating handle (7); the upper end of the valve rod (9) is in threaded sleeve connection with an anti-falling limiting cover (8) corresponding to the switch rotating handle (7); a limiting rotating groove (10) is formed in the circumference of the lower end of the valve rod (9); a half-and-half limiting ring (11) is rotatably sleeved on the limiting rotating groove (10); the half limiting ring (11) is fixedly connected in the limiting fixing groove (13) through a first fastening piece (12); the limiting fixing groove (13) is formed in the valve core (14); the valve core (14) is inserted in the switch groove (15); the switch groove (15) is arranged on the valve body (1).

2. An efficient balanced pressure shut-off valve as defined in claim 1, wherein: an extension shaft (16) is fixedly connected to the switch rotating handle (7) through vertical threads; a second fastener (17) is inserted into the extension shaft (16) in a threaded manner; the second fastener (17) and the extension shaft (16) are rotatably sleeved with a quick rotating ball (18).

3. An efficient balanced pressure shut-off valve as defined in claim 2, wherein: the circumference of the rapid rotating ball (18) is provided with a soft magnetic ring (19); the soft magnetic ring (19) is magnetically connected with a seamless cover (20); the seamless cover (20) is sleeved on the quick rotating ball (18).

4. A high efficiency balanced pressure shut-off valve as defined in claim 3 wherein: a plurality of third fasteners (21) are symmetrically and fixedly connected to the valve body (1) through threads; a sealing sleeve (22) is sleeved on the third fastener (21); the sealing sleeve (22) is inserted in the valve body (1).

5. An efficient balanced pressure shut-off valve as defined in claim 4 wherein: a plurality of sealing grooves (23) are formed in the inner side surface of the sealing sleeve (22) at intervals; and a sealing ring (24) is inserted in the sealing groove (23).

6. An efficient balanced pressure shut-off valve as defined in claim 5, wherein: the sealing ring (24) is made of wear-resistant rubber; the sealing sleeve (22) is made of stainless steel; the seamless cover (20) is made of magnetically conductive metal.