CN215596514U

CN215596514U - Gate valve opening and closing actuating mechanism and gate valve

Info

Publication number: CN215596514U
Application number: CN202122361032.2U
Authority: CN
Inventors: 王又增; 钟宇; 徐金秋; 苏志学; 张�浩; 周小磊; 李俊志; 詹晨菲; 丁梦俊; 聂恺延; 韩文鹏; 袁浩浩; 张卫卫
Original assignee: China Railway Engineering Equipment Group Co Ltd CREG
Current assignee: China Railway Engineering Equipment Group Co Ltd CREG
Priority date: 2021-09-28
Filing date: 2021-09-28
Publication date: 2022-01-21
Anticipated expiration: 2031-09-28

Abstract

The utility model discloses a gate valve opening and closing actuating mechanism and a gate valve. The gate valve opening and closing actuating mechanism adopts a double-oil-cylinder form arranged on the side edge to replace telescopic driving in the extending direction of a transmission gate plate, has a compact structure, can solve the problem of limited space, and is matched with a protection assembly to protect the gate plate and prevent the gate plate from flying out under special conditions and the like due to surface damage of the gate plate. The gate valve solves the problems that the space is limited, the gate valve can be reasonably and correctly installed, and the problems that the valve cavity is filled with impurities, so that the gate plate is easy to block in the opening and closing process, the gate plate is scratched and the like can be effectively solved.

Description

Gate valve opening and closing actuating mechanism and gate valve

Technical Field

The utility model relates to the technical field of gate valves, in particular to a gate valve opening and closing actuating mechanism and a gate valve.

Background

The main slurry discharge pipeline of the muddy water shield machine is close to the first hydraulic gate valve of the rear partition plate, and the gate valve is an exposed rod valve. In the prior art, the hydraulic gate valve is an exposed rod and the actuator is a hydraulic cylinder, the whole size is long, the hydraulic gate valve is limited by the space of the shield tunneling machine, the hydraulic gate valve cannot be installed strictly according to the use specification of the hydraulic gate valve, and the actuator of the hydraulic gate valve must face downwards. In engineering application, slurry in a pipeline contains impurities, and in the opening and closing process, particularly when an oil cylinder faces downwards, a valve cavity of a gate valve can be filled with the impurities, so that the problems of blockage, scratch of the gate plate and the like easily occur in the opening and closing process of the gate plate, and the service life of the valve is seriously influenced.

In the existing design and manufacturing technology of the valve, the existence of the valve cavity cannot be avoided, and no valve with an actuator installed downwards exists. In order to improve the reliability and stability of the use of the gate valve, the gate valve must be installed in a standard manner and the actuator must be directed upward.

According to the defects and limitations of the prior art, a new gate valve opening and closing actuating mechanism is urgently needed, so that the gate valve can be installed normally, and the problem that the installation space of the gate valve is limited can be solved.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned drawbacks of the prior art, the present invention provides an opening/closing actuator for a gate valve and a gate valve, so as to solve the above-mentioned problems.

The technical scheme of the utility model is realized as follows: the utility model provides a gate valve switching actuating mechanism, is connected with the flashboard including setting up the extensible member in the valve body both sides, extensible member's flexible direction is parallel with the relative motion direction of valve body of flashboard, and the outside of flashboard is equipped with protective assembly.

Further, the protection component comprises a protection seat and a protection plate, the protection seat can be detachably arranged on the upper portion of the valve body, a through hole for the flashboard to pass through is formed in the protection seat, the protection plate can be detachably arranged on the protection seat, and the flashboard is located in the protection plate.

As the preferred scheme, the guard plate is the U-shaped plate, and the bottom open end of U-shaped plate is equipped with L type location portion, and L type location portion cooperatees with the constant head tank that sets up on the protection seat.

Furthermore, the extensible member is flexible hydro-cylinder, and flexible hydro-cylinder passes through the base symmetry and sets up in the both sides of valve body, and flexible hydro-cylinder is connected with the flashboard through pulling the otic placode. The base is detachably arranged on two sides of the valve body through bolts. A piston rod of the telescopic oil cylinder is fixedly connected with a lug plate through a bolt, the lug plate is fixed to the top of the flashboard, and the lug plate extends out of a protection plate of the protection assembly.

A gate valve comprises a valve body, a gate plate and a gate valve opening and closing actuating mechanism.

The gate valve opening and closing actuating mechanism adopts a double-oil-cylinder form arranged on the side edge to replace telescopic driving in the extending direction of a transmission gate plate, is compact in structure, can solve the problem of limited space, and is matched with a protection assembly to protect the gate plate and prevent the problems that the gate plate is easy to block, the gate plate is scratched and the like in the opening and closing process due to the fact that a valve cavity of the gate valve is filled with impurities. Adopt gate valve switching actuating mechanism's gate valve, the gate valve installation is standard, has avoided the gate valve because of the secondary risk that the installation is not standard to lead to, and gate valve switching reliability is high, operates steadily, does benefit to shield structure machine mud circulation system's safe operation.

Drawings

In order to illustrate the embodiments of the utility model more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

Fig. 1 is a schematic view of the overall structure of the gate valve of the present invention.

FIG. 2 is a schematic structural view of the gate valve with the guard plate removed.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in fig. 1, embodiment 1 is a gate valve opening and closing actuator, which includes telescopic members disposed on both sides of a valve body 6, the telescopic members are connected to a gate plate 5, and the gate plate moves up and down under the action of the telescopic members to open and close the gate valve. The flexible direction of extensible member is parallel with the motion direction of flashboard 5 relative valve body 6 to the design of traditional flashboard motion direction extension line is replaced to parallel arrangement's mode, compact structure solves the limited problem of gate valve installation space. The outside of flashboard 5 is equipped with protective component, prevents that flashboard surface damage and special circumstances flashboard phenomenons such as break away from taking place. The gate valve solves the problems that the space is limited, the gate valve can be reasonably and correctly installed, and the problems that the valve cavity is filled with impurities, so that the gate plate is easy to block in the opening and closing process, the gate plate is scratched and the like can be effectively solved.

Further, the protection component comprises a protection seat 7 and a protection plate 4, the protection seat 7 is detachably arranged on the upper portion of the valve body 6 through bolts, a through hole for the flashboard 5 to pass through is formed in the protection seat 7, the flashboard is convenient to move up and down, and the gate valve is smoothly opened and closed. The protection plate 4 is detachably arranged on the protection seat 7 through bolts, and the flashboard 5 is positioned in the protection plate 4 and protects the flashboard. As an optimal mode, the protection plate 4 is a U-shaped plate, an L-shaped positioning portion is arranged at the opening end of the bottom of the U-shaped plate, and the L-shaped positioning portion is matched with a positioning groove 8 formed in the protection seat 7, so that the U-shaped plate can be accurately positioned and installed conveniently.

As shown in fig. 2, in embodiment 2, a gate valve opening and closing actuator, in this embodiment, telescopic cylinders 2 are symmetrically disposed on two sides of a valve body 6 through a base 1, that is, a dual-cylinder driving manner is adopted, so as to ensure smooth and stable opening and closing of a gate valve. The telescopic oil cylinder 2 is connected with the flashboard 5 through the lug plate 3, namely the lug plate 3 is fixed at the top of the flashboard 5, the two ends of the lug plate 3 extend out of the protection plate 4 of the protection component, the telescopic oil cylinder is convenient to connect, and interference is avoided. The ear pulling plate 3 and the gate plate 5 are both positioned inside the protection plate. Preferably, the base 1 is detachably arranged on two sides of the valve body 6 through bolts to support the telescopic oil cylinder. And a piston rod of the telescopic oil cylinder 2 is fixedly connected with the lug plate 3 through a bolt, so that the telescopic oil cylinder is convenient to disassemble and assemble. After the hydraulic cylinder supplies oil, the cylinder rod can stretch out and draw back, and the stretching of the cylinder rod drives the gate plate to stretch out and draw back through the lug plate so as to achieve the purpose of opening and closing the gate valve. The other structure is the same as embodiment 1.

Embodiment 3 is a gate valve including a valve body 6 and a shutter 5, and further including the gate valve opening/closing actuator described in embodiment 2. The gate valve opening and closing actuating mechanism can solve the problem that the space of a gate valve is limited, enables an actuator of the gate valve to face upwards, and effectively prevents the problems that the gate valve is blocked and the gate valve is forced to open a flashboard to scratch and the like. The gate valve adopting the gate valve opening and closing actuating mechanism has low failure probability, reduces the times of valve replacement due to gate valve failure, reduces the labor intensity of workers, improves the working environment, greatly reduces the economic investment of gate valve maintenance, reduces the risk level caused by valve maintenance, and is beneficial to safe construction.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A gate valve opening and closing actuating mechanism is characterized in that: the telescopic part is connected with the gate plate (5) and comprises telescopic parts arranged on two sides of the valve body (6), the telescopic direction of the telescopic parts is parallel to the movement direction of the gate plate (5) relative to the valve body (6), and the outer side of the gate plate (5) is provided with a protection assembly.

2. The gate valve opening/closing actuator according to claim 1, wherein: the protection assembly comprises a protection seat (7) and a protection plate (4), the protection seat (7) can be detachably arranged on the upper portion of the valve body (6), a through hole for the flashboard (5) to pass through is formed in the protection seat (7), the protection plate (4) can be detachably arranged on the protection seat (7), and the flashboard (5) is located in the protection plate (4).

3. The gate valve opening/closing actuator according to claim 2, wherein: the protection plate (4) is a U-shaped plate, an L-shaped positioning portion is arranged at the opening end of the bottom of the U-shaped plate, and the L-shaped positioning portion is matched with a positioning groove (8) formed in the protection seat (7).

4. The gate valve opening/closing actuator according to any one of claims 1 to 3, wherein: the telescopic piece is a telescopic oil cylinder (2), the telescopic oil cylinder (2) is symmetrically arranged on two sides of the valve body (6) through the base (1), and the telescopic oil cylinder (2) is connected with the flashboard (5) through the pull lug plate (3).

5. The gate valve opening/closing actuator according to claim 4, wherein: the base (1) is detachably arranged on two sides of the valve body (6) through bolts.

6. The gate valve opening/closing actuator according to claim 5, wherein: the piston rod of the telescopic oil cylinder (2) is fixedly connected with the pull lug plate (3) through a bolt, the pull lug plate (3) is fixed at the top of the flashboard (5), and the pull lug plate (3) extends out of a protection plate (4) of the protection component.

7. A gate valve, comprising a valve body (6) and a shutter (5), characterized in that: further comprising the gate valve opening/closing actuator according to any one of claims 1 to 6.