CN213393631U

CN213393631U - Double-gate valve

Info

Publication number: CN213393631U
Application number: CN202022215547.7U
Authority: CN
Inventors: 王利华; 符建县
Original assignee: Zhejiang Dongchen Valve Technology Co ltd
Current assignee: Dongchen Intelligent Technology Co ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2021-06-08
Anticipated expiration: 2030-09-30

Abstract

The utility model discloses a double-gate board gate valve belongs to valve technical field, and the piece that rises in aim at overcoming current gate valve rocks easily and leads to the not smooth defect of switch. The double-gate-plate gate valve comprises a valve body and a first gate plate arranged in the valve body, a second gate plate, a first expansion block, a second expansion block and a wedge-shaped block, wherein a limit column is arranged on the first gate plate and the second gate plate, a fixing hole is formed in the first expansion block and the second expansion block, a limit sliding hole is formed in the wedge-shaped block, a shaft sleeve is further arranged in the valve body, the limit columns of the first gate plate and the second gate plate are respectively inserted into two ends of the shaft sleeve, two ends of the shaft sleeve are respectively inserted into the fixing holes of the first expansion block and the second expansion block, the shaft sleeve is matched with the fixing hole, and the shaft sleeve penetrates through the limit sliding hole and can move up and down in. First rising piece links together with the second rising piece through setting up the axle sleeve, improves gate valve stability, improves the smooth and easy nature of gate valve switching.

Description

Double-gate valve

Technical Field

The utility model belongs to the technical field of the valve, a double-gate board gate valve is related to.

Background

The existing double-gate-plate gate valve comprises two gate plates, two expansion blocks, a wedge block, a limit post is arranged on the two gate plates, a limit hole is formed in the wedge block, the limit post is matched in the limit hole and cannot move up and down, the gate plates move up and down along with the wedge block, a limit sliding groove is formed in the two expansion blocks, the two sides of the wedge block are provided with convex parts embedded in the limit sliding groove and can slide in the limit sliding groove, the two expansion blocks are relatively independently arranged, the integrity is poor, the gate valve is easy to shake, and the phenomenon that the gate valve is not smooth is easy to occur.

Disclosure of Invention

The utility model discloses problem to prior art existence provides a double-disc gate valve, and the piece that rises in the current gate valve is overcome to aim at rocks easily and leads to the not smooth defect of switch.

The utility model discloses a realize like this:

a double-gate-plate gate valve comprises a valve body, a first gate plate, a second gate plate, a first expansion block, a second expansion block and a wedge-shaped block, wherein the first gate plate, the second gate plate, the first expansion block and the second expansion block are arranged in the valve body, the first gate plate and the second gate plate are provided with limit columns, it is characterized in that the first expansion block and the second expansion block are provided with fixing holes, the wedge block is provided with a limiting sliding hole, the valve body is also internally provided with a shaft sleeve, the limiting posts of the first flashboard and the second flashboard are respectively inserted into two ends of the shaft sleeve, the two ends of the shaft sleeve are respectively inserted into the fixing holes of the first expansion block and the second expansion block, the shaft sleeve is matched with the fixing holes, the shaft sleeve passes spacing slide opening and can reciprocate in spacing slide opening, first rising piece with all have the inclined plane of top-down inside side slope on the second rising piece, wedge have with the wedge portion that the inclined plane corresponds the setting. Link together first piece and the second piece that rises through setting up the axle sleeve, guarantee that first piece and the second piece that rises can retrain each other and go up and down jointly, improve the wholeness of gate valve inner structure, reduce the possibility that first piece and the second piece that rises rocked, improve the gate valve stability, improve the smooth and easy nature of gate valve switching.

Preferably, the first expansion block and the second expansion block are provided with limiting parts protruding inwards, and the limiting parts are embedded into the limiting sliding holes and can move up and down in the limiting sliding holes. Can avoid the direct and wedge collision of axle sleeve like this, improve the stability of assembly, simultaneously because the fixed orifices runs through in spacing portion, can improve the area of contact between axle sleeve and two blooms like this, reduce the pressure that the axle sleeve receives, reduce the deformation risk.

Preferably, the inclined surfaces are located on both side portions of the first and second blocks. Therefore, the extrusion force of the wedge-shaped block to the two expansion blocks is more uniform, and the expansion blocks are prevented from deviating laterally.

Preferably, the upper end of the wedge-shaped block is provided with a T-shaped groove, and the T-shaped groove is detachably connected with the valve rod. Thus, the wedge-shaped block is convenient to process, disassemble and assemble.

Preferably, the upper end part of the inner cavity of the valve body is provided with a guide plate. Therefore, the phenomenon that the gate plate is difficult to close due to the deviation after the gate valve is opened is avoided.

Preferably, the inner side of the guide plate is flush with the sealing surface in the valve body. Therefore, the accurate position of the flashboard can be ensured, and the stability of the gate valve is improved.

Preferably, the limiting slide hole is rectangular.

The utility model provides a double-gate valve rises the piece through setting up the axle sleeve with first piece and the second that rises and links together, guarantees that first piece and the second that rises and rise the piece and can retrain each other and go up and down jointly, improves the wholeness of gate valve inner structure, reduces the first piece that rises and the second that rises and rises the possibility that the piece rocked, improves gate valve stability, improves the smooth and easy nature of gate valve switching.

Drawings

FIG. 1 is a schematic sectional view of a gate valve;

fig. 2 is an exploded view of a partial structure of the gate valve.

Reference is made to the accompanying drawings in which: 100. a valve body; 200. a valve cover; 300. a valve stem; 400. a wedge block; 410. a limiting slide hole; 420. a wedge portion; 500. a shaft sleeve; 610. a first expansion block; 620. a second expansion block; 630. a limiting part; 640. a fixing hole; 650. a bevel; 710. a first shutter plate; 720. a second shutter plate; 730. a limiting column.

Detailed Description

The following detailed description is made of specific embodiments of the present invention with reference to the accompanying drawings, so as to make the technical solution of the present invention easier to understand and master. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

The embodiment provides a double-gate valve, as shown in fig. 1-2, comprising a valve body 100, and a first gate 710, a second gate 720, a first expansion block 610, a second expansion block 620 and a wedge 400 installed in the valve body 100, wherein the upper end of the valve body 100 is provided with a valve cap 200, the upper end of the wedge 400 is connected with a valve rod 300, the valve rod 300 passes through the valve cap 200, the first gate 710 and the second gate 720 are provided with limit posts 730, the first expansion block 610 and the second expansion block 620 are provided with fixing holes 640, the wedge 400 is provided with limit sliding holes 410, the valve body 100 is further provided with a shaft sleeve 500, the limit posts 730 of the first gate 710 and the second gate 720 are respectively inserted into two ends of the shaft sleeve 500, two ends of the shaft sleeve 500 are respectively inserted into the fixing holes 640 of the first expansion block 610 and the second expansion block 620, the shaft sleeve 500 is adapted to the fixing holes 640, the shaft sleeve 500 cannot move up and down in the fixing holes 640, the shaft sleeve 500 passes through the limit sliding holes 410 and can move up and down, the first and

second expansion blocks

610 and 620 each have a slope 650 inclined inward from top to bottom, and the wedge block 400 has a wedge portion 420 corresponding to the slope 650. The first and

second expansion blocks

610 and 620 have a stopper 630 protruding inward, and the stopper 630 is inserted into the stopper slide hole 410 and can move up and down in the stopper slide hole 410.

As shown in fig. 1, the gate valve is in a closed state, and at this time, the wedge block 400 tightly abuts against the inclined surfaces 650 of the first block 610 and the second block 620 via the wedge portion 420, so that the first block 610 and the second block 620 tightly abut against the first gate 710 and the second gate 720, respectively, and the first gate 710 and the second gate 720 seal the entrance and the exit of the gate valve. When the gate valve needs to be opened, the valve rod 300 is controlled to move upwards, the valve rod 300 drives the wedge block 400 to move upwards, the wedge block 400 moves initially, the limiting sliding hole 410 moves upwards but the first gate plate 710, the second gate plate 720, the first expansion block 610, the second expansion block 620 and the shaft sleeve 500 cannot move upwards, the wedge block 400 does not extrude the first expansion block 610 and the second expansion block 620 any more, the first gate plate 710 and the second gate plate 720 do not tightly abut against the valve body 100 any more, friction between the first gate plate 710 and the second gate plate 720 and the valve body 100 is greatly reduced, and when the lower end of the limiting portion 630 contacts the lower end wall of the limiting sliding hole 410, the wedge block 400 drives the first expansion block 610, the second expansion block 620, the shaft sleeve 500, the first gate plate 710 and the second gate plate 720 to move upwards, so that the gate valve is opened. When the gate valve needs to be closed, the valve rod 300 moves downwards to drive the wedge block 400 to move downwards, the first expansion block 610, the second expansion block 620, the shaft sleeve 500, the first gate 710 and the second gate 720 move downwards under the combined action of gravity and the wedge block 400, when the first gate 710 and the second gate 720 move to the lower limit position, the wedge block 400 can move downwards continuously, so that the wedge part 420 extrudes the inclined plane 650, the first expansion block 610 and the second expansion block 620 move towards two sides respectively, the first expansion block 610 and the second expansion block 620 extrude the first gate 710 and the second gate 720 respectively, and the first gate 710 and the second gate 720 tightly abut against the valve body 100 to realize sealing.

Through setting up axle sleeve 500 and linking together first piece 610 that rises and second piece 620 that rises, guarantee that first piece 610 that rises and second piece 620 that rises can retrain each other and go up and down jointly, improve the gate valve inner structure's wholeness, reduce the possibility that first piece 610 that rises and second piece 620 that rises and rock, improve the gate valve stability, improve the smooth and easy nature of gate valve switching. The limiting slide hole 410 is rectangular. In other alternative embodiments, the limiting slide hole 410 may be a kidney-shaped hole.

The spacing portion 630 can avoid the direct collision with the wedge 400 of axle sleeve 500, improves the stability of assembly, simultaneously because the fixed orifices 640 runs through in spacing portion 630, can improve the area of contact between axle sleeve 500 and two blooms like this, reduces the pressure that axle sleeve 500 receives, reduces the deformation risk. In other alternative embodiments, the position-limiting part 630 may not be provided, and the position-limiting part is directly contacted and limited by the upper and lower walls of the shaft sleeve 500 and the position-limiting slide hole 410.

The inclined surfaces 650 are located at both side portions of the first and

second blocks

610 and 620, and the corresponding wedge portions 420 are also located at both side portions of the wedge block 400. Thus, the extrusion force of the wedge-shaped block 400 to the two expansion blocks is more uniform, and the expansion blocks are prevented from deviating laterally. In other alternative embodiments, the inclined surface 650 may be provided at a middle position of the first block 610 and the second block 620.

The upper end of the wedge block 400 is provided with an inverted T-shaped groove, and the valve rod 300 is detachably connected to the T-shaped groove. This facilitates the machining and removal of the wedge block 400. A guide plate is provided at the upper end of the inner cavity of the valve body 100. Therefore, the phenomenon that the gate plate is difficult to close due to the deviation after the gate valve is opened is avoided.

The inner side of the guide plate is flush with the sealing surface in the valve body 100 and the first plate 710 and the second plate 720 abut against the sealing surface when the gate valve is closed. Therefore, the accurate position of the flashboard can be ensured, and the stability of the gate valve is improved.

Claims

1. A double-gate-plate gate valve comprises a valve body (100), a first gate plate (710), a second gate plate (720), a first expansion block (610), a second expansion block (620) and a wedge-shaped block (400) which are installed in the valve body (100), wherein a limit column (730) is arranged on the first gate plate (710) and the second gate plate (720), the double-gate-plate gate valve is characterized in that a fixing hole (640) is arranged on the first expansion block (610) and the second expansion block (620), a limit sliding hole (410) is arranged on the wedge-shaped block (400), a shaft sleeve (500) is further arranged in the valve body (100), the limit columns (730) of the first gate plate (710) and the second gate plate (720) are respectively inserted into two ends of the shaft sleeve (500), two ends of the shaft sleeve (500) are respectively inserted into fixing holes (640) of the first expansion block (610) and the second expansion block (620), and the shaft sleeve (500) is adapted to the fixing holes (640), the shaft sleeve (500) penetrates through the limiting sliding hole (410) and can move up and down in the limiting sliding hole (410), the first expansion block (610) and the second expansion block (620) are provided with inclined planes (650) which incline inwards from top to bottom, and the wedge block (400) is provided with a wedge part (420) which corresponds to the inclined planes (650).

2. The double-gate valve according to claim 1, wherein the first boss (610) and the second boss (620) have a stopper portion (630) protruding inward, and the stopper portion (630) is fitted into the stopper slide hole (410) and can move up and down in the stopper slide hole (410).

3. A double gate valve according to claim 1, wherein the ramps (650) are located on both sides of the first block (610) and the second block (620).

4. A double gate valve according to claim 1, wherein the wedge block (400) is provided with a T-shaped slot at its upper end, where the valve stem (300) is removably attached.

5. A double gate valve according to claim 1, wherein a guide plate is provided at an upper end of the inner cavity of the valve body (100).

6. A double gate valve according to claim 5, wherein the inner side of the guide plate is flush with the sealing surface in the valve body (100).

7. A double gate valve according to any one of claims 1 to 6, wherein the limiting slide hole (410) is rectangular.