CN214699234U

CN214699234U - Threaded quick-assembling stop valve

Info

Publication number: CN214699234U
Application number: CN202121031255.6U
Authority: CN
Inventors: 高张豪
Original assignee: Zhejiang Lufalai Technology Co ltd
Current assignee: Zhejiang Lufalai Technology Co ltd
Priority date: 2021-05-14
Filing date: 2021-05-14
Publication date: 2021-11-12
Anticipated expiration: 2031-05-14

Abstract

The utility model discloses a screw thread fast-assembling stop valve, inside left valve pocket and the right valve pocket of being equipped with of valve body are equipped with the opening between left valve pocket and the right valve pocket, and the valve body upper end is equipped with the valve gap through threaded connection, is equipped with the valve rod of passing through screw thread swing joint in the valve gap behind the valve gap in the top in the valve gap, and valve rod low side fixedly connected with case is provided with the filler between valve rod upper end and the valve gap, is equipped with the valve cap through threaded connection on the valve gap, and the valve rod upper end is connected with the hand wheel. The utility model discloses in, wholly adopt threaded connection, have quick assembly disassembly's function. The valve core is in a conical structure and is matched with the circulation hole of the inclined plane structure, so that the service life is prolonged, and the sealing performance is improved. Establish the internal thread in the valve pocket, the external screw thread is established to the valve body surface, and interior, external screw thread all can be used for connecting external pipe, also can be connected to the internal thread with external pipe simultaneously, and the external screw thread is used for connecting external pipe's fixing bolt, and dual thread tightening makes external pipe connection more stable, prevents to drop to easy dismounting.

Description

Threaded quick-assembling stop valve

Technical Field

The utility model relates to a pipeline valve technical field especially relates to a screw thread fast-assembling stop valve.

Background

The stop valve is also called a stop valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to a valve core by a valve rod to prevent a sealing surface from leaking. The connection modes are divided into three types, namely flange connection, screw thread connection and welding connection. When a medium enters the valve from the lower part of the valve core, the medium can apply an upward thrust to the valve core, in order to achieve the sealing effect, the valve rod needs to apply a large downward thrust to the valve core, the valve rod overcomes the upward thrust of the medium and applies an additional thrust to the seal to achieve the sealing effect, the valve rod of the stop valve is long, two ends of the valve rod bear large force, so that the phenomena of bending, breaking and the like are easy to occur, and the long-time friction between the valve core and the valve body of the chamber valve is easy to reduce the sealing performance. Meanwhile, the valve cover of a common stop valve is connected with the valve body through bolts and nuts, and the disassembly and the assembly are troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: in order to solve the problems, the threaded quick-assembly stop valve is provided.

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

the utility model provides a screw thread fast-assembling stop valve, includes the valve body, inside left valve pocket and the right valve pocket of being equipped with of valve body, be equipped with the opening between left valve pocket and the right valve pocket, the valve body upper end is equipped with the valve gap through threaded connection, be equipped with the valve rod of passing through screw thread swing joint in the valve gap behind the valve gap on the top in the valve gap, valve rod low side fixedly connected with case, be provided with the filler between valve rod upper end and the valve gap, be equipped with the valve cap through threaded connection on the valve gap, the valve rod upper end is connected with the hand wheel.

As a further description of the above technical solution:

internal threads are arranged in the left valve cavity and the right valve cavity, and external threads are arranged on the outer surfaces of the two ends of the valve body.

As a further description of the above technical solution:

the upper end of the threaded connection part of the valve rod and the valve cover is provided with a separating ring, and the separating ring is made of polytetrafluoroethylene materials.

As a further description of the above technical solution:

the packing is of a hierarchical structure, a belleville spring is arranged between the packing, a packing compression ring is further arranged on the packing at the uppermost end, and the packing compression ring is made of a rubber material.

As a further description of the above technical solution:

the sealing surface of the valve core is of a conical structure, and the circulation hole is of an inclined surface structure corresponding to the conical structure angle of the valve core.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses the valve rod passes through threaded connection at the valve gap lower extreme, because the threaded connection position of valve rod is nearer apart from the case, for general stop valve, thereby reduced the moment of valve rod lower extreme and reduced the pressure that comes from the medium that the valve rod received, the effectual valve rod that prevents takes place crooked, cracked phenomenon.

2. The utility model discloses establish the sealed face of case into the toper structure, the opening is the inclined plane structure corresponding with case toper structure angle, and the toper structure of case can make the valve under the closure state, and the case is closed with the whole sealed face of opening, possess better sealed effect. Meanwhile, the valve core is screwed into the inflow through hole, abrasion is certainly caused after long-time use, but due to the valve core with the conical structure, even if the front end of the valve core is abraded, the part which is not abraded at the rear end can be sealed, the service life of the valve is greatly prolonged, and meanwhile, the sealing performance inside the valve is ensured.

3. The utility model discloses wholly fix through threaded connection, seal for the passing through bolt and nut of general valve, have the effect of easy dismouting to be equipped with the internal thread in left valve pocket and the right valve pocket, valve body both ends surface also is equipped with the external screw thread, can make and take over more convenient, swift connection valve outward.

Drawings

Fig. 1 shows a schematic front sectional structure diagram provided by an embodiment of the present invention.

Illustration of the drawings:

1. a valve body; 2. a left valve cavity; 3. a right valve cavity; 4. a flow-through hole; 5. a valve cover; 6. a valve stem; 7. a valve core; 8. a filler; 9. a bonnet; 10. a hand wheel; 11. an internal thread; 12. an external thread; 13. a spacer ring; 14. a belleville spring; 15. and (5) packing and pressing a ring.

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 of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Referring to fig. 1, the threaded quick-assembly stop valve comprises a valve body 1, a left valve cavity 2 and a right valve cavity 3 are arranged inside the valve body 1, a circulation hole 4 is formed between the left valve cavity 2 and the right valve cavity 3, a valve cover 5 connected through threads is arranged at the upper end of the valve body 1, a valve rod 6 is arranged in the valve cover 5, the top end of the valve rod penetrates through the valve cover 5 and then is movably connected into the valve cover 5 through threads, a valve core 7 is fixedly connected to the lower end of the valve rod 6, a filler 8 is arranged between the upper end of the valve rod 6 and the valve cover 5, a valve cap 9 connected through threads is arranged on the valve cover 5, and a hand wheel 10 is connected to the upper end of the valve rod 6.

Specifically, as shown in fig. 1, internal threads 11 are arranged in the left valve cavity 2 and the right valve cavity 3, external threads 12 are arranged on the outer surfaces of the two ends of the valve body 1, the internal threads 11 and the external threads 12 can be used for connecting an external pipe, the external pipe can be connected to the internal threads 11, the external threads 12 are used for connecting a fixing bolt for the external pipe, and the double-thread fixing enables the external pipe to be connected more stably, prevents falling, and is convenient to assemble and disassemble.

Specifically, as shown in fig. 1, a separating ring 13 is disposed at the upper end of the threaded connection portion of the valve rod 6 and the valve cover 5, the separating ring 13 is made of teflon, the separating ring 13 can prevent the valve rod 6 from colliding and rubbing with the valve cover 5 to cause damage when the valve rod 6 rotates upwards, and the teflon has excellent wear resistance.

Specifically, as shown in fig. 1, the packing 8 is of a hierarchical structure, the belleville springs 14 are arranged between the packing 8, the packing press ring 15 is further arranged on the packing 8 at the uppermost end, the packing press ring 15 is made of rubber materials, the packing 8 can effectively seal the valve, and the self-tightening force of the belleville springs 14 and the matching of the packing press ring 15 can prevent the packing 8 from loosening to cause medium leakage due to long-time use.

Specifically, as shown in fig. 1, the sealing surface of the valve element 7 is a conical structure, the circulation hole 4 is an inclined surface structure corresponding to the angle of the conical structure of the valve element 7, the inclined surface sealing structure can enable the front end of the valve element 7 to be compensated through the rear end even if abrasion is caused, the conical structure can close the sealing surface of the whole circulation hole 4, a better sealing effect is achieved, and the service life of the valve element 7 is also ensured.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a screw thread fast-assembling stop valve, includes valve body (1), its characterized in that, valve body (1) inside is equipped with left valve pocket (2) and right valve pocket (3), be equipped with between left valve pocket (2) and right valve pocket (3) opening (4), valve body (1) upper end is equipped with valve gap (5) through threaded connection, be equipped with in valve gap (5) the top and run through valve rod (6) of passing through screw thread swing joint in valve gap (5) behind valve gap (5), valve rod (6) low side fixedly connected with case (7), be provided with filler (8) between valve rod (6) upper end and valve gap (5), be equipped with valve cap (9) through threaded connection on valve gap (5), valve rod (6) upper end is connected with hand wheel (10).

2. The threaded fast-assembling stop valve as claimed in claim 1, characterized in that internal threads (11) are arranged in the left valve cavity (2) and the right valve cavity (3), and external threads (12) are arranged on the outer surfaces of two ends of the valve body (1).

3. A threaded quick-assembling stop valve according to claim 1, characterized in that a separating ring (13) is arranged at the upper end of the threaded connection part of the valve rod (6) and the valve cover (5), and the separating ring (13) is made of polytetrafluoroethylene material.

4. The threaded fast-assembling stop valve according to claim 1, characterized in that the packing (8) is of a hierarchical structure, a belleville spring (14) is arranged between the packing (8), a packing press ring (15) is further arranged on the packing (8) at the uppermost end, and the packing press ring (15) is made of rubber material.

5. The threaded fast-assembling stop valve according to claim 1, characterized in that the sealing surface of the valve core (7) is of a conical structure, and the flow hole (4) is of a bevel structure corresponding to the angle of the conical structure of the valve core (7).