CN218971864U

CN218971864U - Gate valve

Info

Publication number: CN218971864U
Application number: CN202320166834.4U
Authority: CN
Inventors: 周林业
Original assignee: Shanghai Zhonghu Valve Group Intelligent Equipment Co ltd
Current assignee: Shanghai Zhonghu Valve Group Intelligent Equipment Co ltd
Priority date: 2023-02-09
Filing date: 2023-02-09
Publication date: 2023-05-05
Anticipated expiration: 2033-02-09

Abstract

The application belongs to the technical field of gate valves, and discloses a gate valve which comprises a valve seat formed by a front valve body and a rear valve body, wherein the rear valve body is arranged on the back surface of the front valve body, threaded holes are symmetrically formed in the front and back four corners of the front valve body, bolts are connected with the internal threads of the threaded holes, and valve plates are symmetrically arranged between the front valve body and the rear valve body; an unfolding assembly is arranged between the front valve body and the rear valve body and comprises a first rack, a second rack, a gear, a first guide plate and a first sliding sleeve, and a circular hole is formed in the gear; the drive shaft drives the gear to rotate, then drives first rack and second rack to expand, then drives first slip cap and valve plate through fixed block and connecting plate and expands, after opening, the valve plate symmetry is located the both sides of valve body, guarantees that whole device focus can not take place the skew to avoid one side of valve plate to produce the extrusion with the inner wall of valve body, cause the valve plate to warp, the condition emergence of damage.

Description

Gate valve

Technical Field

The application relates to the technical field of gate valves, and more particularly, to a gate valve.

Background

The gate valve has the purposes of opening and isolating the medium in the industrial pipeline, and the phenomenon that the medium is not leaked in the pipeline and outside the pipeline after the medium is isolated, especially when the medium in the pipeline is toxic and harmful, is more important. In the opening process of the existing gate valve, the moving pair is firstly far away from the solid valve plate, and simultaneously the valve plate and the outer frame are pulled to be far away from the front fixed pair; then the valve plate and the outer frame move horizontally along the radial direction, the solid valve plate leaves, the hollow valve plate is stopped after being aligned with the sealing flange on the front fixing pair, the moving pair starts to move towards the hollow valve plate, contacts and pushes the hollow valve plate to generate axial displacement, and the valve plate and the outer frame move together with the front fixing pair until the hollow valve plate is completely clamped and then stopped.

Via search disclosure (bulletin) number: CN217762125U discloses a translational gate valve, comprising a front fixed pair, a movable valve plate and a driving mechanism thereof, a movable pair and a rear fixed pair, wherein the movable valve plate comprises a hollow valve plate and a solid valve plate which are connected with each other, and a valve plate outer frame, and a chain for driving is arranged in an outer frame groove formed by channel steel. The utility model adopts a chain wheel chain as a driving mechanism, reduces the cost, adopts the rolling fit of a frame and the guide wheel, simplifies the valve structure, reduces the weight, facilitates transportation and installation, reduces the cost and facilitates popularization. However, in the use process of the device, after the valve is opened, the valve plate is positioned on one side of the valve body, the gravity center of the whole device is offset, and extrusion can be generated between one side of the valve and the inner wall of the valve body, so that one side of the valve is deformed, and the gate valve is damaged.

In order to solve the above problems, the present application provides a gate valve.

Disclosure of Invention

The gate valve adopts the following technical scheme:

the gate valve comprises a valve seat formed by a front valve body and a rear valve body, wherein the rear valve body is arranged on the back surface of the front valve body, threaded holes are symmetrically formed in the front and back four corners of the front valve body, bolts are connected with the inner threads of the threaded holes, and valve plates are symmetrically arranged between the front valve body and the rear valve body;

be provided with between preceding valve body and the back valve body and expand the subassembly, it includes first rack, second rack, gear, first deflector and first slip cap to expand the subassembly, the circular hole has been seted up to the inside of gear, the inside in circular hole is fixed to be cup jointed the drive shaft, the one end of drive shaft rotates with the back top of preceding valve body and is connected, the other end of drive shaft extends to the back of back valve body, and rotates and be connected with drive power supply.

Further, the first guide plates are fixedly connected to the top of the back of the front valve body, the two first sliding sleeves are symmetrically and slidably connected to the two ends of the first guide plates, and the bottom ends of the first sliding sleeves are fixedly connected to the top ends of the valve plates.

Through the technical scheme, the first sliding sleeve can drive the valve plate to synchronously move and spread in the process of moving to two sides along the first guide plate, so that the valve is opened.

Further, a fixing block is fixedly connected to the top end of one of the valve plates, and the front face of the fixing block is fixedly connected with the back face of one end of the first rack.

Through above-mentioned technical scheme, be connected through the fixed block between first rack and the one of them first slip cap, when first rack removes, can drive first slip cap synchronous motion through the fixed block.

Further, the top of the first rack is meshed with the outer wall of the gear, the bottom of the second rack is meshed with the outer wall of the gear, and the top of the second rack is connected with the inner wall of the top of the front valve body in a sliding mode.

Through the technical scheme, one sides of the first rack and the second rack, which are opposite, are respectively meshed with the gear, and when the driving shaft drives the gear to rotate clockwise, the first rack and the second rack can be unfolded towards two sides of the valve body.

Further, a connecting plate is fixedly connected to one side of the bottom end of the second rack, and the bottom end of the connecting plate is fixedly connected with the top end of the other first sliding sleeve.

Through the technical scheme, the second rack is connected with the other second sliding sleeve through the connecting plate, and when the second rack moves, the other second sliding sleeve can be driven to synchronously move through the connecting plate.

Further, the back bottom fixedly connected with second deflector of preceding valve body, the both ends symmetry sliding connection of second deflector has the second slip cap, the top fixed connection of second slip cap is in the bottom of valve plate.

Through the technical scheme, the valve plate can drive the second sliding sleeve to slide along the outer wall of the second guide plate in the moving process, and the valve plate can stably move in the valve body under the combined action of the first guide plate and the second guide plate.

Further, the middle parts of the front valve body and the rear valve body are penetrated and provided with through holes, the outside of the driving power supply is sleeved with a shell, and the front surface of the shell is fixedly connected with the top of the back surface of the rear valve body.

Through above-mentioned technical scheme, drive power supply's output is connected with the gear through the drive shaft, starts drive power supply and can drive the coaxial rotation of gear through the drive shaft.

In summary, the present application includes the following beneficial technical effects:

according to the utility model, the unfolding assembly is arranged between the front valve body and the rear valve body, the gear is driven to rotate through the driving shaft, then the first rack and the second rack are driven to unfold to two sides, then the first sliding sleeve and the valve plate are driven to unfold to two sides through the fixing block and the connecting plate, after the unfolding assembly is opened, the valve plate is symmetrically positioned at two sides of the valve body, and the gravity center of the whole device is ensured not to deviate, so that the situation that the valve plate is deformed and damaged due to extrusion of one side of the valve plate and the inner wall of the valve body is avoided.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is a first cross-sectional schematic view of the present application;

FIG. 3 is a second cross-sectional schematic view of the present application;

fig. 4 is an enlarged schematic view of the structure at a in fig. 3 of the present application.

The reference numerals in the figures illustrate:

1. a front valve body; 2. a rear valve body; 3. a bolt; 4. a housing; 5. a driving power supply; 6. a drive shaft; 7. a first guide plate; 8. a first sliding sleeve; 9. a fixed block; 10. a first rack; 11. a connecting plate; 12. a second rack; 13. a valve plate; 14. a second sliding sleeve; 15. a second guide plate; 16. a gear.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application; it is apparent that the described embodiments are only a part of the embodiments of the present application, not all of the embodiments, and all other embodiments obtained by a person having ordinary skill in the art without making creative efforts based on the embodiments in the present application are within the scope of protection of the present application.

In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

Examples:

the embodiment of the application discloses a gate valve, please refer to fig. 1, 2, 3 and 4, comprising a valve seat composed of a front valve body 1 and a rear valve body 2, wherein the rear valve body 2 is arranged on the back surface of the front valve body 1, screw holes are symmetrically arranged at the front and back four corners of the front valve body 1, bolts 3 are connected with the internal threads of the screw holes, and valve plates 13 are symmetrically arranged between the front valve body 1 and the rear valve body 2;

be provided with the expansion subassembly between preceding valve body 1 and the back valve body 2, the expansion subassembly includes first rack 10, second rack 12, gear 16, first deflector 7 and first slip cap 8, and circular hole has been seted up to gear 16's inside, and the inside in circular hole is fixed to be cup jointed drive shaft 6, and the one end of drive shaft 6 is rotated with the back top of preceding valve body 1 and is connected, and the other end of drive shaft 6 extends to the back of back valve body 2, and rotates and be connected with drive power supply 5.

Referring to fig. 3, a first guide plate 7 is fixedly connected to the top of the back of the front valve body 1, two first sliding sleeves 8 are symmetrically and slidably connected to two ends of the first guide plate 7, and the bottom end of the first sliding sleeve 8 is fixedly connected to the top end of the valve plate 13.

In the process that the first sliding sleeve 8 moves to two sides along the first guide plate 7, the valve plate 13 can be driven to synchronously move and spread, so that the valve is opened.

Referring to fig. 3, a fixing block 9 is fixedly connected to a top end of one of the valve plates 13, and a front surface of the fixing block 9 is fixedly connected to a back surface of one end of the first rack 10.

The first racks 10 are connected with one of the first sliding sleeves 8 through the fixed blocks 9, and when the first racks 10 move, the first sliding sleeves 8 can be driven to synchronously move through the fixed blocks 9.

Referring to fig. 3 and 4, the top end of the first rack 10 is engaged with the outer wall of the gear 16, the bottom end of the second rack 12 is engaged with the outer wall of the gear 16, and the top end of the second rack 12 is slidably connected with the top inner wall of the front valve body 1.

The opposite sides of the first rack 10 and the second rack 12 are respectively engaged with the gear 16, and when the driving shaft 6 drives the gear 16 to rotate clockwise, the first rack 10 and the second rack 12 can be unfolded towards the two sides of the valve body.

Referring to fig. 3, a connecting plate 11 is fixedly connected to one side of the bottom end of the second rack 12, and the bottom end of the connecting plate 11 is fixedly connected to the top end of the other first sliding sleeve 8.

The second rack 12 is connected with the other first sliding sleeve 8 through a connecting plate 11, and when the second rack 12 moves, the other first sliding sleeve 8 can be driven to synchronously move through the connecting plate 11.

Referring to fig. 3, a second guide plate 15 is fixedly connected to the bottom of the back of the front valve body 1, two ends of the second guide plate 15 are symmetrically and slidably connected with a second sliding sleeve 14, and the top end of the second sliding sleeve 14 is fixedly connected to the bottom end of the valve plate 13.

The valve plate 13 can drive the second sliding sleeve 14 to slide along the outer wall of the second guide plate 15 in the moving process, and the valve plate 13 can stably move in the valve body under the combined action of the first guide plate 7 and the second guide plate 15.

Referring to fig. 1 and 2, through holes are formed in the middle portions of the front valve body 1 and the rear valve body 2, a casing 4 is sleeved outside the driving power supply 5, and the front surface of the casing 4 is fixedly connected to the top of the back surface of the rear valve body 2.

The output end of the driving power supply 5 is connected with the gear 16 through the driving shaft 6, and the driving power supply 5 can be started to drive the gear 16 to coaxially rotate through the driving shaft 6.

The implementation principle of the embodiment is as follows: starting the driving power supply 5, driving the gear 16 to coaxially rotate through the driving shaft 6, and enabling the first gear rack 10 and the second gear rack 12 to be unfolded towards two sides of the valve body when the driving shaft 6 drives the gear 16 to rotate clockwise because the opposite sides of the first gear rack 10 and the second gear rack 12 are respectively meshed with the gear 16;

in the moving process of the first rack 10 and the second rack 12, the fixed block 9 and the connecting plate 11 drive the two first sliding sleeves 8 to synchronously move, and then the valve plate 13 is driven to open under the cooperation of the first sliding sleeves and the second sliding sleeves 14 at the bottom end.

The foregoing are all preferred embodiments of the present application, and are not intended to limit the scope of the present application in any way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. The gate valve comprises a valve seat formed by a front valve body (1) and a rear valve body (2), and is characterized in that: the rear valve body (2) is arranged on the back of the front valve body (1), threaded holes are symmetrically formed in the front and back four corners of the front valve body (1), bolts (3) are connected with the inner threads of the threaded holes, and valve plates (13) are symmetrically arranged between the front valve body (1) and the rear valve body (2);

be provided with between preceding valve body (1) and back valve body (2) and expand the subassembly, expand the subassembly and include first rack (10), second rack (12), gear (16), first deflector (7) and first slip cap (8), circular hole has been seted up to the inside of gear (16), the inside in circular hole is fixed to have cup jointed drive shaft (6), the one end of drive shaft (6) is rotated with the back top of preceding valve body (1) and is connected, the other end of drive shaft (6) extends to the back of back valve body (2), and rotates and be connected with drive power supply (5).

2. A gate valve according to claim 1, wherein: the first guide plates (7) are fixedly connected to the top of the back of the front valve body (1), the two first sliding sleeves (8) are symmetrically and slidably connected to the two ends of the first guide plates (7), and the bottom ends of the first sliding sleeves (8) are fixedly connected with the top ends of the valve plates (13).

3. A gate valve according to claim 1, wherein: the top end of one valve plate (13) is fixedly connected with a fixed block (9), and the front surface of the fixed block (9) is fixedly connected with the back surface of one end of the first rack (10).

4. A gate valve according to claim 1, wherein: the top of the first rack (10) is meshed with the outer wall of the gear (16), the bottom of the second rack (12) is meshed with the outer wall of the gear (16), and the top of the second rack (12) is connected with the top inner wall of the front valve body (1) in a sliding mode.

5. A gate valve according to claim 1, wherein: the bottom side of second rack (12) fixedly connected with connecting plate (11), the top fixed connection of bottom and another first slip cap (8) of connecting plate (11).

6. A gate valve according to claim 1, wherein: the back bottom of preceding valve body (1) fixedly connected with second deflector (15), the both ends symmetry sliding connection of second deflector (15) have second slip cap (14), the top fixed connection of second slip cap (14) is in the bottom of valve plate (13).

7. A gate valve according to claim 1, wherein: the middle parts of the front valve body (1) and the rear valve body (2) are provided with through holes in a penetrating mode, a shell (4) is sleeved outside the driving power supply (5), and the front face of the shell (4) is fixedly connected to the top of the back face of the rear valve body (2).