CN211550717U

CN211550717U - High temperature resistant gate valve gap foundry goods

Info

Publication number: CN211550717U
Application number: CN201922294699.8U
Authority: CN
Inventors: 孙晋; 陶雷; 张培育; 倪国勇; 郑晓群; 王军
Original assignee: Yancheng Newman Steel Casting Co ltd
Current assignee: Yancheng Newman Steel Casting Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-22
Anticipated expiration: 2029-12-19

Abstract

The utility model discloses a high temperature resistant gate valve gap foundry goods, including the valve gap, the bottom fixed mounting of valve gap has flange, it is equipped with the valve rod to insert on the roof of valve gap, and the bottom of valve rod runs through the valve gap and extends to the downside of valve gap, the annular closing plate who mutually supports with the valve gap is installed in the dismantlement on the lateral wall on valve rod top, the annular closing plate is located the inboard of valve gap, the annular closing plate is including two semi-ring-shaped closing plates of mutually supporting, two semi-ring-shaped closing plates are connected jointly on the valve rod, be equipped with fixing device between two semi-ring-shaped closing plates, the annular limiting plate who mutually supports with the annular. The utility model discloses in with valve rod installation back in the valve gap, from the bottom of valve gap with annular seal plate installation to the valve rod on, just can be with the clearance seal between valve rod and the valve gap after the inboard wall on annular seal plate and valve gap top contacts each other to the leakproofness of gate valve has been improved, reasonable in design, and practical function is good.

Description

High temperature resistant gate valve gap foundry goods

Technical Field

The utility model relates to a gate valve technical field especially relates to a high temperature resistant gate valve gap foundry goods.

Background

The gate valve is an opening and closing piece gate plate, the movement direction of the gate plate is perpendicular to the fluid direction, the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled, the gate valve is sealed through contact of a valve seat and the gate plate, usually, a sealing surface can be subjected to surfacing welding of metal materials to increase abrasion resistance, such as surfacing welding of 1Cr13, STL6, stainless steel and the like, the gate plate is provided with a rigid gate plate and an elastic gate plate, and the gate valve is divided into the rigid gate valve and the elastic gate valve according to different gate plates. A sealing device is not arranged between the valve rod and the valve cover of the existing gate valve, so that the gap between the valve rod and the valve cover is easily enlarged due to expansion caused by heat, contraction caused by cold and the like in the using process, the sealing performance of the gate valve is rapidly reduced, and the improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the unreasonable problem of gate valve gap design among the prior art, and the high temperature resistant gate valve gap foundry goods that proposes.

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

a high-temperature-resistant gate valve cover casting comprises a valve cover, wherein a connecting flange is fixedly installed at the bottom end of the valve cover, a valve rod is inserted into the top wall of the valve cover, the bottom end of the valve rod penetrates through the valve cover and extends to the lower side of the valve cover, an annular sealing plate which is matched with the valve cover is detachably installed on the outer side wall of the top end of the valve rod and is positioned on the inner side of the valve cover, the annular sealing plate comprises two semi-annular sealing plates which are matched with each other, the two semi-annular sealing plates are connected to the valve rod together, a fixing device is arranged between the two semi-annular sealing plates, an annular limiting plate which is matched with the annular sealing plate is detachably installed on the inner side wall of the bottom end of the valve cover, threads are uniformly arranged on the outer side wall of the annular limiting plate, threaded holes which are meshed with the annular limiting, adjacent two all insert jointly on the connecting block and be equipped with connecting screw, two equal threaded connection has fastening nut, two on the connecting screw equal fixed mounting has the semicircular connecting block on the roof of semicircular closing plate, and two semicircular connecting blocks mutually support, set up the annular spread groove of mutually supporting with two semicircular connecting blocks on the inboard roof of valve gap, two equal fixed mounting has seal ring on the roof of semicircular connecting block, and seal ring all contacts with the inside wall of annular spread groove each other.

Preferably, the annular limit plate is in threaded seal with the valve cover.

Preferably, a plurality of handles are fixedly mounted on the bottom wall of the annular limiting plate.

Preferably, a rubber pad is fixedly mounted on the top wall of the annular limiting plate.

Compared with the prior art, the utility model discloses there is following beneficial effect: after the valve rod is arranged in the valve cover, the annular sealing plate is arranged on the valve rod from the bottom end of the valve cover, and when the annular sealing plate is contacted with the inner side wall at the top end of the valve cover, a gap between the valve rod and the valve cover can be sealed, so that the sealing property of the gate valve is improved, the design is reasonable, and the practical effect is good; install the annular limiting plate who mutually supports with annular sealing plate on the inside wall of valve gap bottom, annular sealing plate can be with the mutual in close contact with of annular limiting plate when the gate valve is airtight to can seal the top of valve gap, further improve the leakproofness of gate valve.

Drawings

Fig. 1 is a front structural sectional view of a high temperature resistant gate valve cover casting of the present invention when the gate valve is closed;

fig. 2 is a front sectional view of a valve cover casting of a high temperature resistant gate valve according to the present invention when the gate valve is opened;

fig. 3 is the enlarged view of the part a structure of the high temperature resistant gate valve cover casting of the utility model.

In the figure: 1 valve gap, 2 flange, 3 valve rods, 4 semicircular sealing plates, 5 connecting blocks, 6 connecting screws, 7 fastening nuts, 8 semicircular connecting blocks, 9 annular connecting grooves, 10 sealing gaskets, 11 annular limiting plates, 12 handles and 13 rubber base plates.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-3, a high temperature resistant gate valve bonnet casting comprises a valve bonnet 1, a connecting flange 2 is fixedly installed at the bottom end of the valve bonnet 1, a valve rod 3 is inserted on the top wall of the valve bonnet 1, the bottom end of the valve rod 3 penetrates through the valve bonnet 1 and extends to the lower side of the valve bonnet 1, an annular sealing plate which is matched with the valve bonnet 1 is detachably installed on the outer side wall of the top end of the valve rod 3 and is positioned at the inner side of the valve bonnet 1, the annular sealing plate comprises two semi-annular sealing plates 4 which are matched with each other, the two semi-annular sealing plates 4 are connected to the valve rod 3 together, a fixing device is arranged between the two semi-annular sealing plates 4 and comprises two connecting blocks 5 which are symmetrically and fixedly installed at the two ends of the semi-annular sealing plate 4, connecting screws 6 are inserted on the two adjacent, the annular sealing plate can be conveniently and fixedly mounted on the valve rod 3. Equal fixed mounting has semiannular connecting block 8 on the roof of two semiannular closing plates 4, and two semiannular connecting blocks 8 mutually support, set up the annular connecting groove 9 of mutually supporting with two semiannular connecting blocks 8 on the roof of valve gap 1 inboard, equal fixed mounting has seal ring 10 on the roof of two semiannular connecting blocks 8, and seal ring 10 all contacts with the inside wall of annular connecting groove 9 each other, can promote the leakproofness that annular closing plate and 1 top inside wall of valve gap are connected, thereby can prevent that the fluid from flowing out on the top of valve gap 1. Dismantle on the inside wall of valve gap 1 bottom and install the annular limiting plate 11 of mutually supporting with annular sealing plate, evenly be equipped with the screw thread on the lateral wall of annular limiting plate 11, evenly set up on the inside wall of valve gap 1 with the screw hole of 11 intermeshing of annular limiting plate, annular limiting plate 11 and valve gap 1 thread seal have promoted the leakproofness of being connected between annular limiting plate 11 and the valve gap 1.

Fixed mounting has a plurality of handles 12 on ring limiting plate 11's the diapire, is convenient for rotate ring limiting plate 11 from ring limiting plate 11's bottom to be convenient for install ring limiting plate 11, fixed mounting has rubber backing plate 13 on ring limiting plate 11's the roof, has promoted the leakproofness that ring limiting plate 11 and ring sealing plate are connected.

The utility model discloses in, install valve rod 3 to valve gap 1 interior back, install annular sealing plate to valve rod 3 from valve gap 1's bottom, just can be sealed the clearance between valve rod 3 and the valve gap 1 after the inboard wall on annular sealing plate and valve gap 1 top contacts each other, then on 11 threaded connection of annular limiting plate to the inside wall of valve gap 1 bottom from valve gap 1's bottom, annular sealing plate can with 11 mutual in close contact of annular limiting plate when the gate valve is airtight to can be sealed the top of valve gap 1.

Claims

1. The utility model provides a high temperature resistant gate valve gap foundry goods, includes valve gap (1), its characterized in that: the bottom end of the valve cover (1) is fixedly provided with a connecting flange (2), the top wall of the valve cover (1) is inserted with a valve rod (3), the bottom end of the valve rod (3) penetrates through the valve cover (1) and extends to the lower side of the valve cover (1), the outer side wall of the top end of the valve rod (3) is detachably provided with an annular sealing plate which is matched with the valve cover (1), the annular sealing plate is positioned at the inner side of the valve cover (1) and comprises two semi-annular sealing plates (4) which are matched with each other, the two semi-annular sealing plates (4) are connected to the valve rod (3) together, a fixing device is arranged between the two semi-annular sealing plates (4), the inner side wall of the bottom end of the valve cover (1) is detachably provided with an annular limiting plate (11) which is matched with the annular sealing plate, and the, the inner side wall of the valve cover (1) is uniformly provided with threaded holes which are mutually meshed with the annular limiting plate (11), the fixing device comprises two connecting blocks (5) which are symmetrically and fixedly arranged at two ends of a semi-annular sealing plate (4), connecting screw rods (6) are commonly inserted into the two adjacent connecting blocks (5), fastening nuts (7) are in threaded connection with the two connecting screw rods (6), the semi-annular connecting blocks (8) are fixedly arranged on the top walls of the two semi-annular sealing plates (4), the two semi-ring-shaped connecting blocks (8) are matched with each other, the top wall of the inner side of the valve cover (1) is provided with a ring-shaped connecting groove (9) matched with the two semi-ring-shaped connecting blocks (8), the top walls of the two semi-ring-shaped connecting blocks (8) are both fixedly provided with a sealing gasket (10), and the sealing gaskets (10) are in mutual contact with the inner side wall of the annular connecting groove (9).

2. The high temperature resistant gate valve cover casting of claim 1, wherein: the annular limiting plate (11) is in threaded seal with the valve cover (1).

3. The high temperature resistant gate valve cover casting of claim 1, wherein: a plurality of handles (12) are fixedly mounted on the bottom wall of the annular limiting plate (11).

4. The high temperature resistant gate valve cover casting of claim 1, wherein: and a rubber pad (13) is fixedly arranged on the top wall of the annular limiting plate (11).