CN213393616U

CN213393616U - High-strength gate valve

Info

Publication number: CN213393616U
Application number: CN202022116165.9U
Authority: CN
Inventors: 吕紫荣; 华馨; 李小凤; 吕晓斌; 石家添
Original assignee: Shanghai Hugong Valve Manufacturing Co ltd
Current assignee: Shanghai Hugong Valve Manufacturing Co ltd
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-06-08
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a high strength gate valve, including valve body, valve gap and valve rod, the upper end of valve body is equipped with the valve gap, and the mid-mounting of valve gap has the valve rod, and the valve rod is located the upper end department of valve gap and installs the handle, the lower extreme department of valve rod is equipped with the flashboard, the both sides department that the valve body is located the flashboard is equipped with the spacing ring, the both ends department of valve body is equipped with the flange, and the outer wall welding of flange has solid fixed ring, and gu fixed ring longitudinal symmetry sets up threaded hole, upper end the threaded hole is installed the bolt, and the bolt is equipped with the fixed plate with the junction of flange, and in this high strength gate valve, the spacing ring is spacing to the flashboard, prevents that the flashboard from producing and rocking, improves the intensity of this gate valve, and it is.

Description

High-strength gate valve

Technical Field

The utility model relates to a gate valve technical field specifically is a high strength gate valve.

Background

The gate valve is a shutter, the movement direction of the shutter is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled. The gate valve is sealed by the contact of a valve seat and a gate plate, the opening and closing part of the gate valve is the gate plate, the moving direction of the gate plate is vertical to the fluid direction, and the gate valve can only be fully opened and fully closed and cannot be adjusted and throttled.

When the gate valve is closed, the sealing surface can be sealed only by medium pressure, namely, the sealing surface of the gate plate is pressed to the valve seat on the other side by the medium pressure to ensure the sealing of the sealing surface, namely, the gate valve is self-sealed. Most gate valves are forcedly sealed, namely, when the valves are closed, the gate plates are forced to press the valve seats by external force so as to ensure the sealing performance of the sealing surfaces.

The motion mode is as follows: the gate plate of the gate valve moves linearly along with the valve rod, which is also called a rising stem gate valve. Usually, the lifting rod is provided with trapezoidal threads, and the rotating motion is changed into the linear motion, namely the operation torque is changed into the operation thrust force through a nut at the top end of the valve and a guide groove on the valve body. When the valve is opened, when the lifting height of the gate plate is equal to 1 of the drift diameter of the valve: at 1 time, the passage of fluid is completely clear, but in operation, this position is not monitored. In actual use, the vertex of the valve rod is used as a mark, namely, the opening and closing position is used as the full opening position. To account for the occurrence of lock-up due to temperature changes, the valve was opened to the top position and then reversed 1/2-1 cycles to assume the fully open valve position. Thus, the fully open position of the valve is determined by the position (i.e., stroke) of the gate plate, and a gate valve stem nut is provided on the gate plate, and rotation of the hand wheel rotates the valve stem to lift the gate plate.

The existing gate valve is low in strength, and the connection part of the upper flange of the gate valve is easy to loosen. Therefore, the utility model provides a high strength gate valve to solve the problem that proposes in the above-mentioned background art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high strength gate valve to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides a high strength gate valve, includes valve body, valve gap and valve rod, the upper end of valve body is equipped with the valve gap, and the mid-mounting of valve gap has the valve rod, and the valve rod is located the upper end department of valve gap and installs the handle, the lower extreme department of valve rod is equipped with the flashboard, the both sides department that the valve body is located the flashboard is equipped with the spacing ring, the both ends department of valve body is equipped with the flange, and the outer wall welding of flange has solid fixed ring, gu fixed ring longitudinal symmetry set up threaded hole, upper end the threaded hole is installed the.

As a further aspect of the present invention, the inside of the valve cover is provided with a sealing packing.

As the utility model discloses scheme further again, the upper end inner wall of valve body corresponds the spacing ring and is equipped with the draw-in groove, and the lower extreme inner wall of valve body corresponds the spacing ring and is equipped with down the draw-in groove.

As a further proposal of the utility model, the through hole is opened to the corresponding bolt of fixed plate.

As the utility model discloses scheme further again, the upper portion outer wall of valve body corresponds the bolt welding and has the thread bush, and bolt threaded connection thread bush.

As a further proposal of the utility model, the lower end is provided with an extension bolt in the threaded hole.

Compared with the prior art, the beneficial effects of the utility model are that:

in this high strength gate valve, the spacing ring is spacing to the flashboard, prevents that the flashboard from producing and rocking, improves the intensity of this gate valve, utilizes bolt, extension bolt and fixed plate to be fixed with the flange of external pipeline and the flange on the valve body, can improve the intensity of valve body, prevents that the valve body from producing and rocking.

Drawings

Fig. 1 is a schematic structural view of a high-strength gate valve.

Fig. 2 is a schematic view of a connection structure of a fixing ring and a flange in a high-strength gate valve.

Fig. 3 is a schematic structural view of a retainer ring in a high-strength gate valve.

In the figure: 1-valve body, 101-upper clamping groove, 102-lower clamping groove, 2-valve cover, 3-valve rod, 4-handle, 5-flashboard, 6-limiting ring, 7-sealing filling, 8-flange, 9-fixing ring, 10-threaded hole, 11-bolt, 12-fixing plate, 13-threaded sleeve and 14-lengthened bolt.

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

Referring to fig. 1 to 3, in an embodiment of the present invention, a high strength gate valve includes a valve body 1, a valve cap 2 and a valve rod 3, the upper end of the valve body 1 is provided with the valve cap 2, the middle of the valve cap 2 is provided with the valve rod 3, the valve rod 3 is provided with a handle 4 at the upper end of the valve cap 2, the interior of the valve cap 2 is provided with a sealing filler 7, the lower end of the valve rod 3 is provided with a gate plate 5, the valve body 1 is provided with a limit ring 6 at two sides of the gate plate 5, the inner wall of the upper end of the valve body 1 is provided with an upper slot 101 corresponding to the limit ring 6, the inner wall of the lower end of the valve body 1 is provided with a lower slot 102 corresponding to the limit ring 6, two ends of the valve body 1 are provided with flanges 8, the outer wall of the flanges 8 are welded with fixing rings, and the fixed plate 12 is provided with a through hole corresponding to the bolt 11, the outer wall of the upper part of the valve body 1 is welded with a threaded sleeve 13 corresponding to the bolt 11, the bolt 11 is in threaded connection with the threaded sleeve 13, and the lower end is internally provided with an elongated bolt 14 in the threaded hole 10.

The utility model discloses a theory of operation is:

in this high strength gate valve, spacing ring 6 is spacing to flashboard 5, flashboard 5 reciprocates and is fixed, the surface of laminating spacing ring 6, can prevent effectively that the direction from rocking about flashboard 5, improve the stability and the intensity of this gate valve, utilize bolt 11, extension bolt 14 and fixed plate 12 are fixed with flange 8 and the flange 8 on the valve body 1 of external pipeline, make flange 8 inseparabler with external pipeline flange joint, intensity is higher, thereby can improve the intensity of valve body 1, prevent that valve body 1 from producing and rocking, adopt bolt 11, the structure of extension bolt 14 and fixed plate 12, be convenient for the installation of this gate valve, in this high strength gate valve, moreover, the steam generator is simple in structure, when improving gate valve intensity, the production cost is reduced.

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 high strength gate valve, includes valve body (1), valve gap (2) and valve rod (3), its characterized in that, the upper end of valve body (1) is equipped with valve gap (2), and the mid-mounting of valve gap (2) has valve rod (3), and upper end department that valve rod (3) are located valve gap (2) installs handle (4), the lower extreme department of valve rod (3) is equipped with flashboard (5), the both sides department that valve body (1) are located flashboard (5) is equipped with spacing ring (6), the both ends department of valve body (1) is equipped with flange (8), and the outer wall welding of flange (8) has solid fixed ring (9), gu fixed ring (9) longitudinal symmetry set up screw hole (10), upper end install bolt (11) in screw hole (10), bolt (11) are equipped with fixed plate (12) with the junction of flange (.

2. A high strength gate valve according to claim 1, characterized in that the inside of the valve cover (2) is provided with a sealing packing (7).

3. The high-strength gate valve according to claim 1, wherein the inner wall of the upper end of the valve body (1) is provided with an upper clamping groove (101) corresponding to the limiting ring (6), and the inner wall of the lower end of the valve body (1) is provided with a lower clamping groove (102) corresponding to the limiting ring (6).

4. A high-strength gate valve according to claim 1, wherein the fixing plate (12) is provided with a through hole corresponding to the bolt (11).

5. A high-strength gate valve according to claim 1, characterized in that a threaded sleeve (13) is welded on the outer wall of the upper part of the valve body (1) corresponding to the bolt (11), and the bolt (11) is connected with the threaded sleeve (13) in a threaded manner.

6. A high strength gate valve according to claim 1, characterized in that an extension bolt (14) is installed in the threaded hole (10) at the lower end.