CN217874286U

CN217874286U - Track ball valve with replaceable valve seat

Info

Publication number: CN217874286U
Application number: CN202220782131.XU
Authority: CN
Inventors: 陈林; 李敏; 黄晓芳; 吴晓华; 邹利明
Original assignee: Suzhou Douson Valve Co ltd
Current assignee: Harbin Electric Suzhou Dauson Valve Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-11-22
Anticipated expiration: 2032-04-02

Abstract

The utility model belongs to the technical field of the technique of track ball valve and specifically relates to a track ball valve of removable disk seat is related to, and it includes the valve body, sets up the spheroid in the valve body and is used for the spheroidal valve gap of sealed, the internal thread hole has been seted up on the valve body, the threaded connection has the disk seat in the internal thread hole, be provided with combination formula seal assembly on the disk seat. This application has convenient to detach and changes the disk seat to reach the effect of online change disk seat.

Description

Track ball valve with replaceable valve seat

Technical Field

The utility model belongs to the technical field of the technique of track ball valve and specifically relates to a track ball valve of removable disk seat is related to.

Background

The track ball valve is widely applied to key positions of process pipelines such as natural gas, molecular sieves, outlets of hydrogenation compressors and the like, and plays a role in safe cutoff through forced sealing.

The current track ball valve comprises a valve body, a valve cover, a ball body arranged in the valve body and used for opening and closing a channel in the valve body, a valve rod driving the ball body to rotate and a stroke track. The valve body is fixed with a valve seat matched with the ball body, so that the ball body is in a sealing state when being attached to the valve seat. At present, most application occasions have online replacement requirements, and the valve seat of the track ball valve in the market is difficult to replace online through welding or interference assembly.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a track ball valve of removable disk seat, and it has convenient to detach and changes the disk seat to reach the online advantage of changing the disk seat.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a track ball valve of removable disk seat, includes the valve body, sets up spheroid in the valve body and is used for the spheroidal valve gap of sealed, the internal thread hole has been seted up on the valve body, the spiro union has the disk seat in the internal thread hole, be provided with combination formula seal assembly on the disk seat.

According to the technical scheme, the valve seat is screwed in the internal threaded hole, so that when the valve seat is seriously abraded, the valve seat can be directly screwed and disassembled from the valve body for replacement, and the effect of online replacement can be achieved without using a special tool.

As a preferred scheme of this application, be provided with on the disk seat and revolve wrong ring platform, revolve to revolve and to have seted up a plurality of dismantlement holes on the ring platform.

According to the technical scheme, the screw can be screwed into the screwing hole or the square rod can be inserted into the screwing hole when the valve seat is detached, and then the valve seat can be driven to rotate by rotating the square rod or the screw, so that the valve seat can be detached conveniently.

As an optimal selection scheme of this application, combined seal subassembly includes the sealing, the sealing is including setting up one end in the disk seat spiro union valve body, the annular seal groove has been seted up on the lateral wall of sealing, the annular seal groove endotheca is equipped with O type sealing washer.

By the technical scheme, the situation that liquid enters the valve seat and corrodes threads of the screwed part of the valve seat is reduced, and accordingly normality of replaceability of the valve seat is guaranteed.

As an optimal scheme of this application, combination formula seal assembly is still including setting up the U type sealing washer of keeping away from disk seat one end in the sealing, set up the groove of putting of inlaying that supplies U type sealing washer to place on the disk seat.

Realize above-mentioned technical scheme, the cross section setting of U type sealing washer for the sunken portion the inside of the liquid U type sealing washer in the valve body, and then make U type sealing washer by strut under fluid pressure and compress tightly between sealing and valve body, thereby it is big more to reach the fluid pressure in the valve body, and sealed effect is better effect. Meanwhile, the U-shaped sealing ring can be made of metal or rubber so as to meet different fluid transportation requirements.

As a preferred scheme of this application, seted up the standing groove on the binding face of valve body and revolving ring platform, be provided with the graphite sealing washer in the standing groove.

According to the technical scheme, the graphite sealing ring plays a sealing role, so that the two ends of the valve seat and the screwed part of the valve body are protected in a sealing mode, and the valve seat is effectively prevented from being corroded and cannot be detached.

As an optimal selection scheme of this application, the disk seat has seted up sealed annular near spheroid one end, the embedded sealing ring who is used for sealed spheroid and disk seat that has put of sealed annular.

Realize above-mentioned technical scheme, sealing ring and spheroid butt to realize sealed between spheroid and the disk seat sealed, the leakproofness between spheroid and the disk seat can be guaranteed to this kind of design change sealing ring alone, and need not to change whole disk seat, and then is convenient for change maintenance track ball valve on line.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the valve seat is screwed in the internal threaded hole, so that when the valve seat is seriously abraded, the valve seat can be directly screwed and disassembled from the valve body for replacement, and a special tool is not needed to achieve the effect of online replacement;

2.U type sealing ring cross section sets up for the sunken portion the inside of the liquid U type sealing ring in the valve body, and then make U type sealing ring propped open and compress tightly between sealing and valve body under fluid pressure, thereby reach the valve body in the fluid pressure more big, the better effect of sealed effect. Meanwhile, the U-shaped sealing ring can be made of metal materials or rubber materials to meet different fluid transportation requirements.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings 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 these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an orbital ball valve with a replaceable valve seat according to an embodiment of the present application.

Fig. 2 is an enlarged view of a portion a in fig. 1.

Reference numerals: 1. a valve body; 2. a sphere; 3. a valve cover; 4. a valve stem; 5. a valve seat; 51. screwing the ring table; 511. screwing the hole; 52. a sealing part; 6. a U-shaped sealing ring; 7. an O-shaped sealing ring; 8. a graphite seal ring; 9. and (4) a sealing ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses track ball valve of removable disk seat. Referring to fig. 1 and 2, the orbital ball valve with a replaceable valve seat 5 includes a valve body 1, a ball 2 disposed in the valve body 1, and a valve cap 3 for sealing the ball 2, the valve cap 3 having a valve stem 4 penetrating therethrough to be rotatable and offset from the ball 2. In order to ensure the tightness of the seal between the valve body 1 and the ball 2, a valve seat 5 for sealing is arranged between the valve body 1 and the ball 2. Seted up the internal thread hole on the valve body 1, seted up on the lateral wall of disk seat 5 with internal thread hole complex screw thread, and then make 5 spiro couplings of disk seat in the internal thread hole for when 5 wearing and tearing of disk seat are serious, can directly twist the dismantlement with disk seat 5 from valve body 1 and change, and need not to use specialized tool to reach the effect that can change on line.

Referring to fig. 1 and 2, in order to facilitate screwing the valve seat 5 during the replacement process, a screwing ring platform 51 is disposed on the valve seat 5, a plurality of screwing holes 511 are formed in a circumferential side wall of the screwing ring platform 51, and the screwing holes 511 may be threaded holes or square holes, that is, screws may be screwed into the screwing holes 511 or square rods may be inserted into the screwing holes 511 during disassembly, that is, the valve seat 5 is driven to rotate by rotating the square rods or the screws.

Referring to fig. 1 and 2, in order to ensure the sealing between the valve seat 5 and the valve body 1, prevent liquid leakage, and corrode the thread of the valve seat 5, a combined sealing assembly is further provided between the valve seat 5 and the valve body 1.

Referring to fig. 1 and fig. 2, the combined sealing assembly includes a sealing portion 52 integrally formed with a valve seat 5, the sealing portion 52 is disposed at one side end of the valve seat 5, which is far away from a screwing ring table 51, an embedding groove is disposed on a joint surface of the valve body 1 and a sealing surface, and a U-shaped sealing ring 6 is embedded in the embedding groove, so that the U-shaped sealing ring 6 seals a joint between the valve body 1 and the valve seat 5, water flow in the valve body 1 is prevented from entering a corrosion thread portion, meanwhile, a cross section of the U-shaped sealing ring 6 is disposed, so that the U-shaped sealing ring 6 in the valve body 1 is recessed in the liquid U-shaped sealing ring 6, and is further expanded and compressed between the sealing portion 52 and the valve body 1 under fluid pressure, and the effect that the fluid pressure in the valve body 1 is higher and the sealing effect is better is achieved. Meanwhile, the U-shaped sealing ring 6 can be made of metal or rubber so as to meet different fluid transportation requirements.

Referring to fig. 1 and 2, an annular sealing groove is formed in the side wall of the sealing portion 52, and an O-shaped sealing ring 7 is sleeved in the annular sealing groove, so that the O-shaped sealing ring 7 forms a second layer of seal, and the situation that liquid enters the valve seat 5 and corrodes threads of the screwed portion of the valve seat 5 is further reduced. Meanwhile, the U-shaped sealing ring 6 and the 0-shaped sealing ring are respectively arranged on the end face and the side wall of the sealing part 52, so that stepped sealing is formed, and the sealing effect is further improved.

Referring to fig. 1 and 2, in order to prevent liquid in the cavity of the valve body 1 from entering the valve seat 5 and the valve body 1 screwed joint part from the contact part of the valve body 1 and the screwing ring table 51, a placing groove is formed in the binding surface of the valve body 1 and the screwing ring table 51, and a graphite sealing ring 8 is arranged in the placing groove, so that the graphite sealing ring 8 plays a role in sealing the third layer, both ends of the valve seat 5 and the valve body 1 screwed joint part are protected in a sealing manner, and the valve seat 5 is effectively prevented from being corroded and cannot be disassembled.

Referring to fig. 1 and 2, valve seat 5 has still seted up the sealing ring 9 groove near 2 one end of spheroid, and the embedded sealing ring 9 that has put in the sealing ring 9 groove is used for sealing ring 9, sealing ring 9 and 2 butts of spheroid to realize the sealed between 2 and the valve seat 5 of sealed spheroid, sealing ring 9 can be changed alone to this kind of design and the leakproofness between spheroid 2 and the valve seat 5 is guaranteed, and need not to change whole valve seat 5, and then is convenient for change maintenance track ball valve on line.

The implementation principle of the track ball valve of this application embodiment a removable disk seat does: 1. the valve seat 5 is screwed in the internal threaded hole, so that when the valve seat 5 is seriously worn, the valve seat 5 can be directly screwed and disassembled from the valve body 1 for replacement, and the online replacement effect can be achieved without using a special tool. Meanwhile, the combined sealing assembly is arranged, so that the sealing performance between the valve seat 5 and the valve body 1 is ensured.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an orbital ball valve of removable disk seat which characterized in that: the ball valve comprises a valve body (1), a ball body (2) arranged in the valve body (1) and a valve cover (3) used for sealing the ball body (2), wherein an internal thread hole is formed in the valve body (1), a valve seat (5) is screwed in the internal thread hole, and a combined sealing assembly is arranged on the valve seat (5).

2. A replaceable seat orbital ball valve as set forth in claim 1 wherein: the valve seat (5) is provided with a screwing ring platform (51), and the screwing ring platform (51) is provided with a plurality of dismounting holes.

3. A replaceable seat orbital ball valve as set forth in claim 1 wherein: the combined sealing assembly comprises a sealing part (52), wherein the sealing part (52) comprises one end arranged in a valve seat (5) screwed into the valve body (1), an annular sealing groove is formed in the side wall of the sealing part (52), and an O-shaped sealing ring (7) is sleeved in the sealing groove.

4. A replaceable seat orbital ball valve as set forth in claim 3 wherein: the combined sealing assembly further comprises a U-shaped sealing ring (6) which is arranged at one end of the sealing portion (52) far away from the valve seat (5), and an embedding groove for placing the U-shaped sealing ring (6) is formed in the valve seat (5).

5. A replaceable seat orbital ball valve as set forth in claim 3 wherein: the ball valve is characterized in that one end, close to the ball body (2), of the valve seat (5) is provided with a sealing ring (9) groove, and a sealing ring (9) used for sealing the ball body (2) and the valve seat (5) is embedded in the sealing ring (9) groove.

6. A replaceable seat orbital ball valve as set forth in claim 3 wherein: a placing groove is formed in the binding surface of the valve body (1) and the screwing ring platform (51), and a graphite sealing ring (8) is arranged in the placing groove.