CN212959920U

CN212959920U - Maintenance-free gas gate valve

Info

Publication number: CN212959920U
Application number: CN202021584666.3U
Authority: CN
Inventors: 孙宁; 颜志汉; 颜志伟; 王宝健; 颜志波
Original assignee: Liangzheng Valve Co ltd
Current assignee: Liangzheng Valve Co ltd
Priority date: 2020-08-04
Filing date: 2020-08-04
Publication date: 2021-04-13
Anticipated expiration: 2030-08-04

Abstract

The utility model discloses a maintenance-free gas gate valve, which comprises a valve body, wherein the interior of the valve body is rotationally connected with a valve rod, the bottom of the inner surface of the valve body is rotationally connected with a flashboard, the top of the outer surface of the valve body is provided with a valve cover, the left side and the right side of the outer surface of the valve body are fixedly connected with a support block, the top of the support block is fixedly connected with a vertical rod, and the opposite side of the vertical rod is fixedly connected with a horizontal rod, the bottom of the horizontal rod is fixedly connected with a guide rod, the outer surface of the guide rod is slidably connected with a limit sleeve, the utility model can realize the installation between the valve cover and the valve body through the matching of the guide rod, the limit sleeve, a spring and the limit groove, can be installed and disassembled without using, is convenient to operate, and meanwhile, a self-, the dustproof effect is increased.

Description

Maintenance-free gas gate valve

Technical Field

The utility model relates to a gate valve technical field specifically is a non-maintaining gas gate valve.

Background

A gate valve is one of the most common on-off valves, and a gate plate (i.e., an opening and closing member, in which the opening and closing member is called a gate plate or a gate, and a gate seat is called a gate plate seat) is used to open (fully open) or cut off (fully closed) a medium in a pipeline. It is not allowed to be used for intercepting, and the flashboard is prevented from being opened slightly in use, so that the damage of a sealing surface is accelerated due to the erosion of a high-speed flowing medium. The double-pole gate plate is used for lifting and falling on a plate surface perpendicular to the central line of a gate seat channel, cuts off media in a pipeline like a gate, and is called a gate valve.

Chinese patent (CN 207333760U) discloses a square-cap elastic seat seal gate valve, which comprises a valve body, wherein side flanges are arranged at two sides of the valve body, a middle flange is arranged above the valve body, middle flange sink pads are arranged at two sides of the inner part of the middle flange, a shaft seal pressing flange is arranged above the valve cover, and an O-shaped ring is arranged between the valve cover and the shaft seal pressing flange, the middle flange sink pad is arranged at the connecting position of the middle flange of the utility model, which can effectively increase the sealing effect and reduce the friction between the flanges, but the valve cover disclosed by the patent is fixed by bolts, but is fixed too hard in this way, is inconvenient to disassemble, needs to be disassembled and assembled by using tools when being maintained each time, is inconvenient to use, and the dustproof effect of the dustproof cover arranged between the square cap and the valve cover is not good, and still fine dust enters the valve body from the space between the square cap and the dustproof cover, therefore, the utility model provides a non-maintaining gas gate valve.

Disclosure of Invention

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

In order to solve the technical problem, the utility model provides a following technical scheme:

the utility model provides a non-maintaining gas gate valve, which comprises a valve body, the inside of valve body is rotated and is connected with the valve rod, the bottom of valve body internal surface is rotated and is connected with the flashboard, the valve gap is installed at the top of valve body surface, the equal fixedly connected with of the left and right sides of valve body surface props up a piece, two the equal fixedly connected with montant in top of a piece, two the equal fixedly connected with horizontal pole in one side that the montant is relative, the bottom fixedly connected with guide bar of horizontal pole, the surface sliding connection of guide bar has the stop collar, the surface of guide bar and the top cover that is located the stop collar are equipped with the spring, the spacing groove with stop collar looks adaptation is all seted up to the left and right.

As an optimal technical solution of the utility model: the top fixed mounting of flashboard internal surface has valve-stem nut, valve-stem surface and valve-stem nut's internal surface threaded connection.

As an optimal technical solution of the utility model: the top joint of valve rod has the square cap, through screw fixed connection between square cap and the valve rod.

As an optimal technical solution of the utility model: a dustproof cover is arranged between the top of the inner surface of the valve cover and the outer surface of the valve rod, and a self-sealing ring is arranged between the inner surface of the dustproof cover and the outer surface of the valve rod.

As an optimal technical solution of the utility model: and a split ring is arranged between the inner surface of the valve cover and the outer surface of the valve rod and is positioned right below the dust cover, and a packing gland is arranged right below the split ring.

The utility model discloses the beneficial effect who reaches is: the utility model discloses an installation between valve gap and the valve body can be realized in the cooperation between guide bar, stop collar, spring and the spacing groove, need not use and to install and dismantle it, and convenient operation, and tiny dust entering valve gap can be avoided to the self sealss circle that sets up simultaneously between dust cover and valve rod, has increased dustproof effect.

Drawings

Fig. 1 is a schematic structural diagram of a maintenance-free gas gate valve.

Fig. 2 is a schematic structural view of a limiting device in a maintenance-free gas gate valve.

Fig. 3 is an enlarged view of a portion of the maintenance-free gas gate valve at a in fig. 1.

In the figure: 1. a valve body; 2. a valve stem; 3. a shutter plate; 4. a valve cover; 5. supporting a block; 6. a vertical rod; 7. a cross bar; 8. a guide bar; 9. a limiting sleeve; 10. a spring; 11. a limiting groove; 12. a valve stem nut; 13. a square cap; 14. a screw; 15. a dust cover; 16. a self-sealing ring; 17. opening the ring; 18. and (4) a packing gland.

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.

Example (b): as shown in fig. 1-3, the utility model provides a non-maintaining gas gate valve, including valve body 1, the inside of valve body 1 is rotated and is connected with valve rod 2, the bottom of 1 internal surface of valve body is rotated and is connected with flashboard 3, valve gap 4 is installed at the top of 1 surface of valve body, the equal fixedly connected with of the left and right sides of 1 surface of valve body props up piece 5, the equal fixedly connected with montant 6 in top of two prop up pieces 5, the equal fixedly connected with horizontal pole 7 in one side that two montants 6 are relative, the bottom fixedly connected with guide bar 8 of horizontal pole 7, the surface sliding connection of guide bar 8 has stop collar 9, the surface of guide bar 8 and the top cover that is located stop collar 9 are equipped with spring 10, the spacing groove 11 with 9 looks adaptations is all seted up to the left.

Wherein, the top of the internal surface of flashboard 3 is fixedly installed with stem nut 12, and the external surface of valve rod 2 is connected with the internal surface screw thread of stem nut 12.

Wherein, the top joint of valve rod 2 has square cap 13, passes through screw 14 fixed connection between square cap 13 and the valve rod 2.

Wherein, self-sealing ring 16 has further dustproof effect, is equipped with dust cover 15 between the top of valve gap 4 internal surface and the surface of valve rod 2, is equipped with self-sealing ring 16 between the internal surface of dust cover 15 and the surface of valve rod 2.

Wherein, a double-split ring 17 is arranged between the inner surface of the valve cover 4 and the outer surface of the valve rod 2 and is positioned right below the dustproof cover 15, and a packing gland 18 is arranged right below the double-split ring 17.

Specifically, the utility model discloses during the use: move two stop collars 9 manually upwards, make stop collar 9 extrusion spring 10 upwards remove, install valve gap 4 at the top of 1 surface of valve body, loosen two stop collars 9 again, under the effect of spring 10, make stop collar 9 block into spacing groove 11, alright with the fixed mounting who realizes valve gap 4, also can conveniently dismantle it, be convenient for maintain, be equipped with from sealing washer 16 simultaneously between the internal surface of dust cover 15 and the surface of valve rod 2, the dustproof effect of reinforcing.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The utility model provides a non-maintaining gas gate valve, including valve body (1), its characterized in that, the inside of valve body (1) is rotated and is connected with valve rod (2), the bottom of valve body (1) internal surface is rotated and is connected with flashboard (3), valve gap (4) are installed at the top of valve body (1) surface, the equal fixedly connected with in the left and right sides of valve body (1) surface props up piece (5), two prop up the equal fixedly connected with montant (6) in top of piece (5), two the equal fixedly connected with horizontal pole (7) in one side that montant (6) are relative, the bottom fixedly connected with guide bar (8) of horizontal pole (7), the surface sliding connection of guide bar (8) has stop collar (9), the surface of guide bar (8) and the top cover that is located stop collar (9) are equipped with spring (10), the spacing groove with stop collar (9) looks adaptation is all seted up to the left and right sides of valve gap (4) (11).

2. The maintenance-free gas gate valve as claimed in claim 1, wherein a stem nut (12) is fixedly mounted on the top of the inner surface of the gate plate (3), and the outer surface of the valve stem (2) is in threaded connection with the inner surface of the stem nut (12).

3. The maintenance-free gas gate valve of claim 1, wherein a square cap (13) is clamped at the top end of the valve rod (2), and the square cap (13) is fixedly connected with the valve rod (2) through a screw (14).

4. The maintenance-free gas gate valve according to claim 1, wherein a dust cover (15) is arranged between the top of the inner surface of the valve cover (4) and the outer surface of the valve rod (2), and a self-sealing ring (16) is arranged between the inner surface of the dust cover (15) and the outer surface of the valve rod (2).

5. Maintenance-free gas gate valve according to claim 1, characterized in that a split ring (17) is arranged between the inner surface of the valve cover (4) and the outer surface of the valve stem (2) and directly below the dust cover (15), and a packing gland (18) is arranged directly below the split ring (17).