CN218408706U

CN218408706U - Forging valve body structure of plug valve

Info

Publication number: CN218408706U
Application number: CN202222922989.4U
Authority: CN
Inventors: 吴晨
Original assignee: Az Armaturen Taicang Co ltd
Current assignee: Az Armaturen Taicang Co ltd
Priority date: 2022-11-03
Filing date: 2022-11-03
Publication date: 2023-01-31
Anticipated expiration: 2032-11-03

Abstract

The utility model discloses a forging valve body structure of plug valve, including body and holding ring, the concave cock chamber of establishing of body upper surface, the both ends of body are extended and are set up the connection neck, connect the neck axial and link up the passageway that sets up and be connected with the cock chamber, and the passageway sets up assembly portion with the cock chamber junction, and the holding ring is installed in assembly portion to the one end salient in assembly portion of holding ring. The utility model has simple structure, abandons the integrated structure of the traditional valve body and the lip edge, adopts the split close fit mode to realize the production of the lip edge, so as to improve the processing precision of the lip edge and the qualification rate of the valve body; in addition, through the setting of holding ring, constant head tank, adopt the mode of mutual location with the bush to guarantee that bush and valve body assembly are stable, avoid the bush to take place the displacement. The end part is provided with a conical surface, so that the flange is convenient to connect with the flange.

Description

Forging valve body structure of plug valve

Technical Field

The utility model relates to a valve field, in particular to forging valve body structure of plug valve.

Background

Because the internal structure of the valve body of the bushing type plug valve is more complex, the valve body is generally cast; but for some special industries; for example, in the hydrogen energy industry, hydrogen energy equipment has high requirements on valves, media are sensitive to defects of materials, accumulation of hydrogen is easily caused if discontinuous defects such as slag inclusion, pores and cracks exist in the materials, hydrogen deformation and even microcrack are induced due to local high pressure formed by the hydrogen deformation at normal temperature, and meanwhile, the brittleness of the materials is deteriorated. Therefore, in the selection of the material for the valve body of the valve, a forging is generally selected for manufacture. A lip edge is convexly arranged on the inner wall of a plug cavity of the conventional valve body structure, and the lip edge is used for positioning the lining sleeve so as to prevent the lining sleeve from rotating and deviating. The lip edge which is qualified in precision and integrated with the valve body cannot be produced through a forging processing method.

SUMMERY OF THE UTILITY MODEL

To the defect that prior art exists above, the utility model discloses a main aim at overcomes prior art's weak point, discloses a forging valve body structure of plug valve, including body and holding ring, the concave cock chamber of establishing of body upper surface, the both ends of body are extended and are set up the connective neck, connective neck axial link up set up with the passageway that the cock chamber is connected, the passageway with cock chamber junction sets up assembly portion, the holding ring is installed in the assembly portion, and the one end salient of holding ring in assembly portion.

Furthermore, the inner wall of the cock cavity is concavely provided with a positioning groove.

Further, the end of the connecting neck is provided with a conical surface.

Further, the positioning ring is tightly fitted with the fitting portion.

Further, the inner diameter of the positioning ring is matched with the inner diameter of the channel.

The utility model discloses the beneficial effect who gains:

the utility model has simple structure, abandons the traditional valve body and lip edge integrated structure, and adopts the split close fit mode to realize the production of the lip edge, so as to improve the processing precision of the lip edge and the qualification rate of the valve body; in addition, through the setting of holding ring, constant head tank, adopt the mode of mutual location with the bush to guarantee that bush and valve body assembly are stable, avoid the bush to take place the displacement. The end part is provided with a conical surface, so that the flange is convenient to connect.

Drawings

FIG. 1 is a schematic perspective view of a forged valve body structure of a plug valve according to the present invention;

FIG. 2 is a top view of a forged valve body structure of a plug valve according to the present invention;

FIG. 3 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a top view of the valve body and bushing after assembly;

FIG. 6 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 5;

FIG. 7 is a cross-sectional view taken along line B-B of FIG. 5;

the reference numbers are as follows:

1. body, 2, holding ring, 3, bush, 11, connecting neck, 12, passageway, 13, assembly portion, 14, constant head tank, 111, the conical surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

A forged valve body structure of a plug valve is shown in figures 1-7 and comprises a body 1 and a positioning ring 2, wherein a plug cavity is concavely arranged on the upper surface of the body 1, two ends of the body 1 extend to form connecting necks 11, the connecting necks 11 axially penetrate through a channel 12 connected with the plug cavity, an assembling portion 13 is arranged at the joint of the channel 12 and the plug cavity, the positioning ring 2 is installed in the assembling portion 13, and one end of the positioning ring 2 protrudes out of the assembling portion 13. The positioning ring 2 and the protruding part of the assembling part 13 form a lip; in the embodiment, on the premise of meeting the strength requirement of the valve body, the lip edge is produced in a split assembly mode, the matching precision of the lip edge and the lining 3 is improved, and the defect that the processing precision of the lip edge does not reach the standard is overcome.

In one embodiment, as shown in FIGS. 1-7, the interior wall of the tap chamber is recessed with a detent 14. Preferably, the positioning groove 14 is provided in the middle of the both end fitting portions 13. The auxiliary positioning of the valve body of the liner 3 is achieved by the positioning slot 14, further avoiding the displacement of the liner 3.

In one embodiment, as shown in FIGS. 1-7, the end of the connecting neck 11 is provided with a tapered surface 111. The end part of the valve body is connected with the pipeline through a flange; in order to simplify the processing steps, the flange and the valve body are fixed in a welding mode; in this embodiment, the flange and the connecting neck 11 are matched by a conical surface, so as to improve the matching degree of the flange and the connecting neck.

In one embodiment, the retaining ring 2 is a close fit with the mounting portion 13, as shown in fig. 1-7. Compared with the lip edge and the valve body integrated structure; the utility model discloses production is simple, and the qualification rate is high. Compared with a welding mode, appearance polishing is not needed.

In one embodiment, the inner diameter of the retaining ring 2 matches the inner diameter of the channel, as shown in FIGS. 1-7.

The above are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; modifications and equivalents of the present invention may be made without departing from the spirit and scope of the invention, which should be construed as broadly as the appended claims.

Claims

1. The utility model provides a forging valve body structure of plug valve, its characterized in that includes body and holding ring, the concave cock chamber of establishing of body upper surface, the both ends of body are extended and are set up the connective neck, connective neck axial link up set up with the passageway that the cock chamber is connected, the passageway with cock chamber junction sets up assembly portion, the holding ring is installed in the assembly portion, and the one end salient of holding ring in assembly portion.

2. The forged valve body structure of plug valve according to claim 1, wherein the inner wall of said plug chamber is recessed with a positioning groove.

3. The forged valve body structure of a plug valve according to claim 1, wherein the end of said connecting neck is provided with a tapered surface.

4. The forged valve body structure of plug valve according to claim 1, wherein said positioning ring is tightly fitted to said fitting portion.

5. The forged valve body structure of a plug valve according to claim 1, wherein said retaining ring has an inner diameter matching an inner diameter of said passage.