CN210164928U

CN210164928U - Welding ball valve without middle welding seam

Info

Publication number: CN210164928U
Application number: CN201920991589.4U
Authority: CN
Inventors: 幸龙峰; 叶峰; 蒋邦国; 张晓军
Original assignee: ZHEJIANG DECA CONTROL VALVE METER CO Ltd
Current assignee: ZHEJIANG DECA CONTROL VALVE METER CO Ltd
Priority date: 2019-06-28
Filing date: 2019-06-28
Publication date: 2020-03-20
Anticipated expiration: 2029-06-28

Abstract

The utility model relates to a welding seam type welding ball valve in no, this kind of welding seam type welding ball valve in no includes valve body, spheroid, disk seat, goes up the valve stem, lower valve rod and actuating mechanism, its characterized in that: the valve body integrated into one piece, valve body upper portion has the mounting hole, it has last valve rod overcoat to go up the downthehole welding of mounting, it establishes in last valve rod overcoat to go up the valve rod, the valve body lower part has down the mounting hole, the downthehole welding of mounting has lower valve rod overcoat down, lower valve rod establishes in lower valve rod overcoat. The welding ball valve without the middle welding line has novel and reasonable design, simplifies the manufacturing process, cancels the annular long welding line in the middle of the valve body, avoids the adverse effect of the welding process on the final performance of the valve, and improves the product performance and the service life.

Description

Welding ball valve without middle welding seam

Technical Field

The utility model belongs to the technical field of the valve, specifically relate to a welding seam type welded ball valve in nothing.

Background

In recent years, as a new type of ball valve, a welded ball valve has been widely used in various industrial pipelines such as petroleum, petrochemical, heat supply, city gas, metallurgy, water supply and drainage, and the like. The middle part of the valve body is connected in a welding mode, nondestructive testing is carried out after welding, a bolt gasket is omitted, and the hidden danger of leakage is reduced. The main structure of the valve body is provided with a single welding line in the middle of the valve body, two symmetrical welding lines and four symmetrical welding lines. However, improper heat conduction treatment of the annular long weld joint of the valve body in the welding process may damage the soft sealing material, heat treatment cannot be performed after welding to remove welding stress, and adverse effects are generated on the sealing part along with the release of the welding stress in the use process.

Disclosure of Invention

An object of the utility model is to overcome not enough among the above-mentioned prior art, provide a welding seam type welded ball valve in nothing.

This kind of weld seam type welded ball valve in not having includes valve body, spheroid, disk seat, goes up valve rod, lower valve rod and actuating mechanism, its characterized in that: the valve body integrated into one piece, valve body upper portion has the mounting hole, it has last valve rod overcoat to go up the downthehole welding of mounting, it establishes in last valve rod overcoat to go up the valve rod, the valve body lower part has down the mounting hole, the downthehole welding of mounting has lower valve rod overcoat down, lower valve rod establishes in lower valve rod overcoat.

The valve body comprises intermediate part, inducer and export section, the welding has a spring holder on the cylindrical inner wall of inducer, the disk seat axial slip sets up on the spring holder, be equipped with the spring groove on the spring holder, be equipped with the spring in the spring groove, the spring is used in on the disk seat.

An annular groove is formed in one side, facing the ball body, of the valve seat, a valve seat supporting ring is arranged in the annular groove, and the valve seat supporting ring is in sealing contact with the ball body.

An upper sealing seat is connected to the upper valve rod outer sleeve, and an upper friction reducing pad is arranged between the lower end of the upper sealing seat and the upper valve rod outer sleeve.

An upper sealing ring is arranged between the upper valve rod outer sleeve and the upper sealing seat.

And a lower friction reducing pad is arranged between the upper end of the lower valve rod and the ball body.

An upper sliding bearing is arranged between the upper valve rod and the upper valve rod outer sleeve.

And a lower sliding bearing is arranged between the lower valve rod and the ball body.

According to the utility model provides a pair of welding seam type welded ball valve in nothing, its novel in design is reasonable and simplified manufacturing process, and annular long welding seam in the middle of the cancellation valve body avoids welding process to the final performance's of valve adverse effect, and product property ability and life have obtained the improvement.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is an enlarged view of a portion of FIG. 1 at B;

fig. 4 is a partially enlarged view of C in fig. 1.

Detailed Description

As shown in fig. 1, this kind of welding seam type welded ball valve in nothing includes valve body 1, spheroid 3, disk seat 15, go up valve rod 5, lower valve rod 2 and actuating mechanism 7, the utility model discloses a 1 integrated into one piece of valve body, specific manufacturing process is at spheroid 3, go up valve rod 5 and lower valve rod 2 equipment and accomplish back valve body 1 as a whole in primary and secondary mould hydraulic necking down shaping, do not have butt joint ring welding seam, owing to cancelled the long welding seam of annular in the middle of the original valve body, avoided because of can't weld the back to remove the adverse effect that stress treatment welding stress release brought to the disk seat after removing, also avoided the high temperature that produces among the long welding seam welding process to the damage of soft sealing material, thereby guaranteed product property's performance, improved life.

In order to support spheroid 3, 1 upper portion of valve body has the mounting hole, it has last valve rod overcoat 6 to go up the downthehole welding of mounting, it establishes in last valve rod overcoat 6 to go up valve rod 5, and 1 lower part of valve body has down the mounting hole, the downthehole welding of lower mounting has lower valve rod overcoat 18, lower valve rod 2 is established in lower valve rod overcoat 18, lower valve rod 2 all is connected with spheroid 3 with last valve rod 5, lower valve rod 2 is as the support and the fixing of spheroid 3, it opens and close the valve to go up the output torque of valve rod 5 through key-type connection conduction actuating mechanism 7.

The valve body 1 of the utility model is composed of a middle part, an inlet section and an outlet section, in order to weld a spring seat 4, the utility model is welded with a spring seat 4 on the cylindrical inner wall of the outlet section, and a spring seat 4 is welded on the cylindrical inner wall of the inlet section; in addition, as shown in fig. 3, the valve seat 15 is axially slidably disposed on the spring seat 4, the spring seat 4 is provided with a spring groove, the spring 13 is disposed in the spring groove, the spring 13 acts on the valve seat 15, and the spring force and the force of the fluid itself provide sufficient specific sealing pressure to seal the ball 3 with the valve seat 15.

The utility model discloses be equipped with the ring channel towards spheroidal one side on disk seat 15, be equipped with disk seat lock ring 14 in the ring channel, this disk seat lock ring 14 realizes sealing contact with spheroid 3.

As shown in fig. 2, an upper seal seat 9 is connected to the upper valve stem housing 6, an upper friction reducing pad 10 is arranged between the lower end of the upper seal seat 9 and the upper valve stem housing 6, the upper friction reducing pad 10 is made of RPTFE material, and the upper friction reducing pad 10 can reduce the friction torque at the relevant position in the opening and closing process.

An upper sealing ring 8 is arranged between the upper valve rod outer sleeve 6 and the upper sealing seat 9, and the upper sealing ring 8 plays a role in sealing between the upper valve rod outer sleeve 6 and the upper sealing seat 9.

Similarly, as shown in fig. 4, a lower friction reducing pad 16 is provided between the upper end of the lower stem 2 and the ball 3, and the lower friction reducing pad 16 is also made of RPTFE material, so that the friction torque at the relevant position during opening and closing can be reduced.

Finally worth mentioning, the utility model discloses be equipped with sliding bearing 11 on last valve rod 5 and last valve rod overcoat 6 between, be equipped with sliding bearing 17 down between lower valve rod 2 and spheroid 3, both can both effectually reduce and open and close moment.

Claims

1. The utility model provides a weld seam type welded ball valve in no, includes valve body (1), spheroid (3), disk seat (15), goes up valve rod (5), lower valve rod (2) and actuating mechanism (7), its characterized in that: valve body (1) integrated into one piece, valve body (1) upper portion has last mounting hole, it has last valve rod overcoat (6) to go up the downthehole welding of mounting hole, it establishes in last valve rod overcoat (6) to go up valve rod (5), valve body (1) lower part has down the mounting hole, the downthehole welding of mounting hole has lower valve rod overcoat (18) down, establish in lower valve rod overcoat (18) down valve rod (2).

2. A weldless ball valve of the center-less type according to claim 1, wherein: the valve body (1) comprises intermediate part, inducer and export section, the welding has a spring holder (4) on the cylindrical inner wall of inducer, disk seat (15) endwise slip sets up on spring holder (4), be equipped with the spring groove on spring holder (4), be equipped with spring (13) in the spring groove, spring (13) are used in disk seat (15).

3. A weldless ball valve of the center-less type according to claim 1, wherein: an annular groove is formed in one side, facing the ball body (3), of the valve seat (15), a valve seat support ring (14) is arranged in the annular groove, and the valve seat support ring (14) is in sealing contact with the ball body (3).

4. A weldless ball valve of the center-less type according to claim 1, wherein: an upper sealing seat (9) is connected to the outer sleeve of the upper valve rod (5), and an upper friction reducing pad (10) is arranged between the lower end of the upper sealing seat (9) and the outer sleeve (6) of the upper valve rod.

5. A weldless ball valve of the center-less type according to claim 4, wherein: an upper sealing ring (8) is arranged between the upper valve stem outer sleeve (6) and the upper sealing seat (9).

6. A weldless ball valve of the center-less type according to claim 1, wherein: a lower friction reducing pad (16) is arranged between the upper end of the lower valve rod (2) and the ball body (3).

7. A weldless ball valve of the center-less type according to claim 1, wherein: an upper sliding bearing (11) is arranged between the upper valve rod (5) and the upper valve rod outer sleeve (6).

8. A weldless ball valve of the center-less type according to claim 1, wherein: a lower sliding bearing (17) is arranged between the lower valve rod (2) and the ball body (3).