CN218992399U

CN218992399U - Gate valve with novel structure

Info

Publication number: CN218992399U
Application number: CN202223498885.1U
Authority: CN
Inventors: 贾超; 于庆贵; 范磊; 杨家兴
Original assignee: China Renewable Energy Engineering Institute
Current assignee: China Renewable Energy Engineering Institute
Priority date: 2022-12-27
Filing date: 2022-12-27
Publication date: 2023-05-09
Anticipated expiration: 2032-12-27

Abstract

The utility model discloses a gate valve with a novel structure, which relates to the technical field of gate valves and comprises a control mechanism and a valve body, wherein the control mechanism comprises a supporting frame, a fixed sleeve is fixedly arranged in the supporting frame, a bearing is fixedly arranged on the inner wall of the fixed sleeve, a threaded sleeve is fixedly arranged on the inner wall of the bearing, a rotating block is fixedly arranged at the top end of the threaded sleeve, a limiting sleeve is slidably connected with the outer wall of the rotating block, and a threaded rod is connected with the inner wall of the threaded sleeve in a threaded manner. According to the utility model, the stop collar is pulled up, the safety pin is pulled out from the inside of the stop groove when the stop collar is pulled up, so that the stop collar is separated from the rotating block, the rotating block is required to be rotated by adopting the operation wrench, the threaded sleeve is rotated, the threaded rod is lifted by the rotation of the threaded sleeve, the gate valve is operated to open or close, and fool-proof measures are adopted in design, so that the possibility of misoperation during overhaul can be avoided, and the accident of a flooded factory building can be effectively avoided.

Description

Gate valve with novel structure

Technical Field

The utility model relates to the technical field of gate valves, in particular to a gate valve with a novel structure.

Background

The gate valve, also called hand knife gate valve, is a valve with gate plate and valve seat being tightly contacted and sealed all the time, and its principle is that the gate plate is opened with a circular opening with a certain diameter, and the circular opening on the gate plate is completely separated from and matched with the diameter by opening and closing the gate plate. The valve has the advantages that the valve body has no groove in the drift diameter, the medium can not be blocked, the valve has full-flux radial flow characteristic, and the sealing structure can be divided into a soft sealing structure and a hard sealing structure. The penetrating knife gate valve has the characteristics of precise structure, good manufacturability, compact structure and the like, and the sealing valve seat is of a movable structure design and has the functions of wear resistance and automatic compensation, so that the service life is longer.

The water conservancy and hydropower engineering floods the factory building incident and happens sometimes, has caused great economic loss, seriously threatens power station operation safety and personal safety. There are many causes of flooding plants, in which valve leakage, unsmooth opening and closing, or misoperation in maintenance are the main causes of many accidents.

The following problems exist in the prior art:

1. the prior art has the defects that the foolproof measures considered in the design process of the gate valve are not in place, and misoperation is easy to cause, which is also an important cause of accidents;

2. the gate valve in the prior art is lengthened along with the service time, and the valve body is not smooth due to ageing and closing, so that the sealing performance is reduced to cause leakage.

Disclosure of Invention

The utility model provides a gate valve with a novel structure, which solves the problems in the prior art.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a push-pull valve of novel structure, includes control mechanism and valve body, control mechanism includes braced frame, braced frame's inside fixed mounting has fixed cover, fixed cover's inner wall fixed mounting has the bearing, the inner wall fixed mounting of bearing has the screw sleeve, the top fixed mounting of screw sleeve has the rotatory piece.

The outer wall sliding connection of rotatory piece has the stop collar, the inner wall threaded connection of thread bush has the threaded rod, the outer wall fixed mounting of stop collar has the shear pin, the spacing groove has been seted up to braced frame's inside.

The technical scheme of the utility model is further improved as follows: the inner wall of the limit groove is in sliding connection with the outer wall of the safety pin, and the inner wall size of the limit sleeve is matched with the outer wall size of the rotating block.

By adopting the technical scheme, the limiting groove in the scheme can limit the position of the safety pin, so that the rotating block is prevented from rotating, and the gate valve is effectively prevented from being opened due to misoperation.

The technical scheme of the utility model is further improved as follows: the valve body comprises an inserting frame, the inner wall of the inserting frame is slidably connected with an inserting plate, a connecting pipe is fixedly arranged at the bottom end of the inserting frame, connecting flanges are fixedly arranged at two ends of the connecting pipe, and a plurality of fixing holes which are distributed at equal intervals in circumference are formed in the connecting flanges.

By adopting the technical scheme, the plugboard in the scheme is used for sealing the inside of the connecting pipe, and the movement of the plugboard is limited through the plugframe.

The technical scheme of the utility model is further improved as follows: the inside of flange has seted up the seal groove, the seal groove is used for placing the sealing washer.

By adopting the technical scheme, the sealing groove in the scheme is matched with the sealing ring, so that the connection tightness between the connecting flange and the pipeline can be improved.

The technical scheme of the utility model is further improved as follows: the top of the plug frame is fixedly connected with the bottom of the supporting frame, and the top of the plug board is fixedly connected with one end of the threaded rod.

By adopting the technical scheme, the plug frame and the supporting frame in the scheme can connect the valve body with the control mechanism, and the movement of the plug board can be controlled through the threaded rod.

The technical scheme of the utility model is further improved as follows: the control mechanism is used for controlling the opening and closing of the valve body, the lining of the valve body adopts high-strength wear-resistant ceramic, and the inner wall of the connecting pipe is of an arc-shaped design.

By adopting the technical scheme, the valve body lining in the scheme adopts high-strength wear-resistant ceramic, so that the service life of the gate valve can be prolonged, the ageing speed is reduced, and the distribution state of static water pressure can be dispersed by matching with an arc-shaped design.

By adopting the technical scheme, compared with the prior art, the utility model has the following technical progress:

1. the utility model provides a gate valve with a novel structure, which needs a user to pull up a limit sleeve firstly when opening or closing, so that a safety pin is pulled out from the inside of a limit groove, the limit sleeve is separated from a rotating block, the rotating block is required to be rotated by an operation wrench, the threaded sleeve is rotated, a threaded rod is lifted by the rotation of the threaded sleeve, the gate valve is operated to be opened or closed, foolproof measures are adopted in design, the possibility of misoperation during maintenance can be avoided, and the accident of a submerged factory building is effectively avoided.

2. The utility model provides a gate valve with a novel structure, which can disperse the distribution state of static water pressure in the process of strengthening the strength of the valve body, slowing down the aging speed, prolonging the service life of safety and reducing the leakage risk by adopting the valve body lined with high-strength wear-resistant ceramic and the arc-shaped design, and can increase the tightness of a connecting flange and a pipeline after connection by arranging a sealing groove, thereby further increasing the sealing effect of the device.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a front view of the present utility model;

FIG. 3 is a side view of the present utility model;

fig. 4 is a schematic view of the connection structure of the fixing sleeve, the bearing and the threaded sleeve of the present utility model.

In the figure: 1. a support frame; 2. a fixed sleeve; 3. a bearing; 4. a thread sleeve; 5. a rotating block; 6. a threaded rod; 7. a limit sleeve; 8. a safety pin; 9. a limit groove; 10. inserting plate; 11. inserting a frame; 12. a connecting pipe; 13. a connecting flange; 14. a fixing hole; 15. and (5) sealing the groove.

Detailed Description

The utility model is further illustrated by the following examples:

example 1

As shown in fig. 1-4, the utility model provides a gate valve with a novel structure, which comprises a control mechanism and a valve body, wherein the control mechanism comprises a supporting frame 1, a fixed sleeve 2 is fixedly arranged in the supporting frame 1, a bearing 3 is fixedly arranged on the inner wall of the fixed sleeve 2, a threaded sleeve 4 is fixedly arranged on the inner wall of the bearing 3, a rotating block 5 is fixedly arranged at the top end of the threaded sleeve 4, a limit sleeve 7 is slidably connected with the outer wall of the rotating block 5, a threaded rod 6 is in threaded connection with the inner wall of the threaded sleeve 4, a safety pin 8 is fixedly arranged on the outer wall of the limit sleeve 7, and a limit groove 9 is formed in the supporting frame 1.

In this embodiment, when opening or closing, the user needs to pull up the stop collar 7 first, withdraw the safety pin 8 from the inside of spacing groove 9 for stop collar 7 and rotatory piece 5 separation need adopt the operation spanner to rotate rotatory piece 5, just can make screw thread cover 4 rotatory, make threaded rod 6 go up and down through the rotation of screw thread cover 4, operate opening or closing of push-pull valve, adopted foolproof measure in the design, can avoid the possibility of maloperation when overhauling, effectively avoid the emergence of flooding factory building accident.

Example 2

As shown in fig. 1, 2 and 3, on the basis of embodiment 1, the present utility model provides a technical solution: preferably, the inner wall of the limit groove 9 and the outer wall of the safety pin 8 are in sliding connection, the inner wall size of the limit sleeve 7 and the outer wall size of the rotary block 5 are matched with each other, the valve body comprises an inserting frame 11, the inner wall of the inserting frame 11 is in sliding connection with an inserting plate 10, a connecting pipe 12 is fixedly arranged at the bottom end of the inserting frame 11, connecting flanges 13 are fixedly arranged at two ends of the connecting pipe 12, and a plurality of fixing holes 14 which are distributed at equal intervals are formed in the connecting flanges 13.

In this embodiment, the limiting groove 9 can limit the position of the safety pin 8, so as to avoid the rotation of the rotating block 5, effectively prevent the gate valve from being opened due to misoperation, and the gate 10 is used for sealing the inside of the connecting pipe 12, so that the movement of the gate 10 is limited through the plug frame 11.

Example 3

As shown in fig. 1, fig. 2 and fig. 3, on the basis of embodiment 1 and embodiment 2, the present utility model provides a technical solution: preferably, the inside of flange 13 has seted up seal groove 15, and seal groove 15 is used for placing the sealing washer, and the top of inserting frame 11 and the bottom fixed connection of braced frame 1, the top of picture peg 10 and the one end fixed connection of threaded rod 6, control mechanism are used for controlling the opening and close of valve body, and the inside lining of valve body adopts high strength wear-resisting ceramic, and the inner wall of connecting pipe 12 is the pitch arc design.

In this embodiment, the sealing groove 15 cooperates with the sealing ring to increase the connection tightness between the connecting flange 13 and the pipeline, the plug frame 11 and the supporting frame 1 can connect the valve body with the control mechanism, the movement of the plug board 10 can be controlled through the threaded rod 6, the service life of the plug board valve can be prolonged by adopting high-strength wear-resistant ceramic as the valve body lining, the aging speed is reduced, and the distribution state of static water pressure can be dispersed by cooperating with the arc design.

The working principle of the gate valve with the novel structure is specifically described below.

As shown in fig. 1-4, a sealing ring is additionally arranged in the sealing groove 15, the connecting flange 13 is matched with the fixing hole 14, a bolt is used for connecting and installing the gate valve and the pipeline, the connection of the gate valve and the pipeline is completed, the sealing between the gate valve and the pipeline is increased through the matching of the sealing ring and the sealing groove 15, when the valve is opened or closed, a user is required to pull up the limit sleeve 7, the safety pin 8 is pulled out of the limit groove 9, the limit sleeve 7 and the rotating block 5 are separated, the rotating block 5 is required to rotate by adopting an operation wrench, the thread sleeve 4 can be rotated, the threaded rod 6 is lifted by the rotation of the thread sleeve 4, the gate 10 is pulled by the lifting of the threaded rod 6, the gate 10 is pulled out or inserted into the interior of the gate frame 11, and accordingly the valve body is opened or closed, and the gate valve is opened or closed by operation.

The foregoing utility model has been generally described in great detail, but it will be apparent to those skilled in the art that modifications and improvements can be made thereto. Accordingly, it is intended to cover modifications or improvements within the spirit of the inventive concepts.

Claims

1. The utility model provides a gate valve of novel structure, includes control mechanism and valve body, its characterized in that: the control mechanism comprises a supporting frame (1), a fixed sleeve (2) is fixedly arranged in the supporting frame (1), a bearing (3) is fixedly arranged on the inner wall of the fixed sleeve (2), a thread bush (4) is fixedly arranged on the inner wall of the bearing (3), and a rotating block (5) is fixedly arranged at the top end of the thread bush (4);

the outer wall sliding connection of rotatory piece (5) has stop collar (7), the inner wall threaded connection of thread bush (4) has threaded rod (6), the outer wall fixed mounting of stop collar (7) has safety pin (8), spacing groove (9) have been seted up to the inside of braced frame (1).

2. The novel structured gate valve according to claim 1, wherein: the inner wall of the limit groove (9) is in sliding connection with the outer wall of the safety pin (8), and the inner wall size of the limit sleeve (7) is matched with the outer wall size of the rotating block (5).

3. The novel structured gate valve according to claim 1, wherein: the valve body comprises an inserting frame (11), an inserting plate (10) is slidably connected to the inner wall of the inserting frame (11), a connecting pipe (12) is fixedly installed at the bottom end of the inserting frame (11), connecting flanges (13) are fixedly installed at two ends of the connecting pipe (12), and a plurality of fixing holes (14) which are distributed at equal intervals are formed in the connecting flanges (13).

4. A novel structured gate valve as claimed in claim 3, wherein: a sealing groove (15) is formed in the connecting flange (13), and the sealing groove (15) is used for placing a sealing ring.

5. A novel structured gate valve as claimed in claim 3, wherein: the top of the inserting frame (11) is fixedly connected with the bottom of the supporting frame (1), and the top of the inserting plate (10) is fixedly connected with one end of the threaded rod (6).

6. A novel structured gate valve as claimed in claim 3, wherein: the control mechanism is used for controlling the opening and closing of the valve body, the lining of the valve body adopts high-strength wear-resistant ceramic, and the inner wall of the connecting pipe (12) is of an arc-shaped design.