CN218718907U

CN218718907U - Extrusion type automatic sealing gate valve

Info

Publication number: CN218718907U
Application number: CN202222623749.4U
Authority: CN
Inventors: 余金贤; 叶云; 李璋喜
Original assignee: Yonglong Valve Co ltd
Current assignee: Yonglong Valve Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-03-24
Anticipated expiration: 2032-09-30

Abstract

The utility model discloses an extrusion type automatic sealing gate valve, which comprises a valve body, a valve cover, a valve rod and a flashboard, wherein the valve cover is arranged at the upper end of the valve body; the flashboard includes the installation piece, compression spring and two closing plates, the installation piece is connected with the inner linkage of valve rod, the middle part of installation piece runs through along the axial and is provided with the spring chamber, two closing plates set up respectively in installation piece both sides, and one side that the closing plate is close to the installation piece is provided with the uide bushing that stretches into the spring intracavity, the outer wall of uide bushing closely laminates with the inner wall in spring chamber, compression spring's tip embedding corresponds in the uide bushing of closing plate and compression spring's tip supports tightly on the closing plate, make two closing plates compressed tightly respectively on the disk seat that corresponds. The utility model discloses the flashboard can support throughout tightly on the disk seat when closing, still can keep good sealing performance at low temperature environment, has avoided the emergence of incident.

Description

Extrusion type automatic sealing gate valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to an extrusion formula self sealing gate valve.

Background

The gate valve is a valve which can control the inside liquid to be fully opened and fully closed through the flashboard, the movement direction of the flashboard is vertical to the fluid direction, the flashboard can be divided into a rigid gate valve and an elastic gate valve according to the difference of the flashboard, and the rigid gate valve and the elastic gate valve can be divided into a lifting rod gate valve and a rotary rod gate valve according to the difference of the opening and closing modes. In low temperature environment, traditional gate valve often can be because microthermal reason, and the phenomenon of shrinkage can take place for the flashboard, leads to the clearance increase of flashboard and disk seat to make the valve take place to leak, the potential safety hazard appears easily.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an extrusion formula self sealing gate valve, the utility model discloses flashboard can support tightly on the disk seat all the time when closing, still can keep good sealing performance in low temperature environment, has avoided the emergence of incident.

In order to achieve the above purpose, the utility model provides a following technical scheme: the extrusion type automatic sealing gate valve comprises a valve body, a valve cover, a valve rod and a gate plate, wherein the valve cover is arranged at the upper end of the valve body, the valve rod penetrates through the valve cover and extends into the valve body, the inner end of the valve rod is in linkage connection with the gate plate, and valve seats which are used for forming sealing fit with the gate plate are integrally arranged on the inner wall of the valve body and correspond to the two sides of the gate plate respectively; the flashboard includes installation piece, compression spring and two closing plates, the installation piece is connected with the inner linkage of valve rod, the middle part of installation piece is provided with the spring chamber along the axial run-through, and two closing plates set up respectively in installation piece both sides, and one side that the closing plate is close to the installation piece is provided with the uide bushing that stretches into the spring intracavity, the outer wall of uide bushing closely laminates with the inner wall in spring chamber, compression spring's tip embedding corresponds in the uide bushing of closing plate and compression spring's tip supports tightly on the closing plate for two closing plates are compressed tightly respectively on the disk seat that corresponds.

Through adopting the above technical scheme, the flashboard adopts split type floating structure, utilize compression spring's elasticity to exert thrust to two closing plates, when the flashboard was closed, two closing plates can be tightly pressed and form sealedly on the disk seat that corresponds, consequently in low temperature environment, even the phenomenon of shrinkage takes place for the closing plate, also can compress tightly the closing plate on the disk seat through compression spring, eliminated originally because of the closing plate shrinkage makes the clearance that produces between closing plate and the disk seat, make it still can keep good sealing performance at low temperature environment, avoided because of revealing the emergence of the incident that leads to.

The utility model discloses further set up to, first spacing guide slot has been seted up along transversely to the upper end of closing plate, the upper end symmetry of installation piece is provided with two first spacing cardboards, first spacing cardboard cooperatees with the first spacing guide slot that corresponds, the spacing guide slot of second has been seted up along transversely to the lower extreme of closing plate, the lower extreme symmetry of installation piece is provided with the spacing cardboard of two seconds, the spacing cardboard of second cooperatees with the spacing guide slot of the second that corresponds.

Through adopting above-mentioned technical scheme for the closing plate can only transversely round trip movement, moves towards the direction that is close to or keeps away from the disk seat promptly, thereby accurately closes or opens the valve.

The utility model discloses further set up to, the position that corresponds the one end that first spacing guide slot is close to the installation piece on the closing plate is equipped with first spacing step, the position that corresponds the one end that the spacing guide slot of second is close to the installation piece on the closing plate is equipped with the spacing step of second.

By adopting the technical scheme, the transverse stroke limitation can be carried out on the two sealing plates, and the two sealing plates are prevented from being separated from the mounting block.

The utility model is further arranged in that the upper and lower ends of the mounting block are respectively provided with a first screw hole and a second screw hole, the inner end of the valve rod is provided with a thread section matched with the first screw hole, and the valve rod is also provided with a first pressing flange used for pressing the first limiting clamping plate on the upper end of the mounting block when the thread section is connected in the first screw hole; and a screw plug is connected to the second screw hole in a threaded manner, and a second pressing flange used for pressing the second limiting clamping plate at the lower end of the mounting block is arranged at the outer end of the screw plug.

Through adopting above-mentioned technical scheme, can realize the installation of first spacing cardboard and the spacing cardboard of second, and mounting structure is simple reliable, and the dismouting is very convenient.

The utility model discloses further set up to, installation piece upper end is equipped with first constant head tank, it is protruding to be equipped with the first location that agrees with first constant head tank mutually on the first spacing cardboard, the lower extreme of installation piece is equipped with the second constant head tank, it is protruding to be equipped with the second location that agrees with the second constant head tank mutually on the spacing cardboard of second.

Through adopting above-mentioned technical scheme, the location installation of the spacing cardboard of first spacing cardboard of being convenient for and second guarantees the accuracy of its installation orientation.

The utility model discloses further set up to, the outer end of plug screw is equipped with the mounting groove, install the buffer block through the fixed pin on the mounting groove, the lower extreme of buffer block is convex calotte shape down.

Through adopting above-mentioned technical scheme, flashboard and valve body inner wall produce the rigidity striking when can avoiding the valve to close, play the effect of protection flashboard and valve body.

The utility model discloses further set up to, the lower extreme of closing plate is equipped with the direction inclined plane.

Through adopting above-mentioned technical scheme, can play the effect of direction to the closing plate, make the closing plate can constitute extrusion fit with the disk seat that corresponds smoothly.

The utility model discloses further set up to, one side that the closing plate is close to the disk seat is equipped with first wear-resistant coating, one side that the disk seat is close to the closing plate is equipped with the wear-resistant coating of second.

Through adopting above-mentioned technical scheme, can promote the sealing surface's of closing plate and disk seat wear resistance to promote the life of valve.

Drawings

Fig. 1 is a schematic overall structure diagram of the present invention;

fig. 2 is a schematic structural diagram of the shutter of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a valve stem; 4. a shutter plate; 5. a valve seat; 6. mounting blocks; 7. a compression spring; 8. a sealing plate; 9. a spring cavity; 10. a guide sleeve; 11. a first limiting guide groove; 12. a first limit clamping plate; 13. a second limiting guide groove; 14. a second limiting clamping plate; 15. a first limit step; 16. a second limit step; 17. a first screw hole; 18. a second screw hole; 19. a threaded segment; 20. a first hold-down flange; 21. a plug screw; 22. a second hold-down flange; 23. a first positioning groove; 24. a first positioning projection; 25. a second positioning groove; 26. a second positioning projection; 27. mounting grooves; 28. a fixing pin; 29. a buffer block; 30. a guide slope; 31. a first wear resistant coating; 32. a second wear resistant coating.

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 efforts all belong to the protection scope of the present invention.

Example (b): the extrusion type automatic sealing gate valve shown in the attached figures 1 and 2 comprises a valve body 1, a valve cover 2, a valve rod 3 and a gate plate 4, wherein the valve cover 2 is installed at the upper end of the valve body 1, the valve rod 3 penetrates through the valve cover 2 and extends into the valve body 1, a filler which is in sealing fit with the valve rod 3 is installed on the valve cover 2, the inner end of the valve rod 3 is in linkage connection with the gate plate 4, a support is installed on the valve cover 2, an actuator (an electric actuator or a pneumatic actuator) is arranged on the support, the output end of the actuator is in linkage connection with the outer end of the valve rod 3, and valve seats 5 which are in sealing fit with the gate plate 4 are respectively and integrally arranged at positions, corresponding to two sides of the gate plate 4, on the inner wall of the valve body 1; the gate plate 4 comprises an installation block 6, a compression spring 7 and two sealing plates 8, the installation block 6 is in linkage connection with the inner end of the valve rod 3, a spring cavity 9 is axially arranged in the middle of the installation block 6 in a penetrating mode, the cross section of the spring cavity 9 is in a circular shape, the two sealing plates 8 are respectively arranged on two sides of the installation block 6, a guide sleeve 10 extending into the spring cavity 9 is arranged on one side, close to the installation block 6, of each sealing plate 8, the outer wall of each guide sleeve 10 is tightly attached to the inner wall of the spring cavity 9, the end portion of the compression spring 7 is embedded into the corresponding guide sleeve 10 of the corresponding sealing plate 8, and the end portion of the compression spring 7 is tightly abutted to the corresponding sealing plate 8, so that the two sealing plates 8 are respectively compressed on the corresponding valve seats 5. Flashboard 4 adopts split type floating structure, utilize compression spring 7's elasticity to exert thrust to two closing plate 8, when flashboard 4 closed, two closing plate 8 can be tightly pressed and form sealedly on the disk seat 5 that corresponds, consequently in low temperature environment, even the phenomenon of shrinkage takes place for closing plate 8, also can compress tightly closing plate 8 on disk seat 5 through compression spring 7, eliminated originally because of the clearance that produces between closing plate 8 and the disk seat 5 of closing plate 8 shrinkage, make it still can keep good sealing performance in low temperature environment, avoided because of revealing the emergence of the incident that leads to.

As shown in fig. 2, a first limiting guide groove 11 is transversely formed in the upper end of the sealing plate 8, two first limiting clamping plates 12 are symmetrically arranged on the upper end of the mounting block 6, the first limiting clamping plates 12 are matched with the corresponding first limiting guide grooves 11, a second limiting guide groove 13 is transversely formed in the lower end of the sealing plate 8, two second limiting clamping plates 14 are symmetrically arranged on the lower end of the mounting block 6, the second limiting clamping plates 14 are matched with the corresponding second limiting guide grooves 13, and the first limiting clamping plates 12 and the second limiting clamping plates 14 are both L-shaped. This design allows the sealing plate 8 to move only laterally back and forth, i.e. towards or away from the valve seat 5, to close or open the valve accurately.

As shown in fig. 2, a first limiting step 15 is provided on the sealing plate 8 corresponding to the end of the first limiting guide groove 11 close to the mounting block 6, and a second limiting step 16 is provided on the sealing plate 8 corresponding to the end of the second limiting guide groove 13 close to the mounting block 6. This design can carry out the lateral stroke to two closing plates 8 spacing, avoids it to break away from installation piece 6.

As shown in fig. 2, the upper end and the lower end of the mounting block 6 are respectively provided with a first screw hole 17 and a second screw hole 18, the inner end of the valve rod 3 is provided with a threaded section 19 matched with the first screw hole 17, the valve rod 3 is further provided with a first pressing flange 20 for pressing the first limiting clamping plate 12 on the upper end of the mounting block 6 when the threaded section 19 is connected in the first screw hole 17, and the first pressing flange 20 and the valve rod 3 are of an integrated structure; the second screw hole 18 is connected with a screw plug 21 in a threaded manner, the outer end of the screw plug 21 is provided with a second pressing flange 22 for pressing the second limiting clamping plate 14 at the lower end of the mounting block 6, and the second pressing flange 22 and the screw plug 21 are of an integrated structure. The installation of the spacing cardboard 12 of first spacing cardboard 12 and second 14 can be realized to this design, and mounting structure is simple reliable, and the dismouting is very convenient.

As shown in fig. 2, the upper end of the mounting block 6 is provided with a first positioning groove 23, the first limiting clamping plate 12 is provided with a first positioning protrusion 24 engaged with the first positioning groove 23, the lower end of the mounting block 6 is provided with a second positioning groove 25, and the second limiting clamping plate 14 is provided with a second positioning protrusion 26 engaged with the second positioning groove 25. The design facilitates the positioning and installation of the first limiting clamping plate 12 and the second limiting clamping plate 14, and the accuracy of the installation orientation of the first limiting clamping plate and the second limiting clamping plate is ensured.

As shown in fig. 2, an installation groove 27 is formed in an outer end of the plug screw 21, a buffer block 29 is installed on the installation groove 27 through fixing pins 28, that is, the number of the fixing pins 28 is four, the four fixing pins 28 penetrate through a side portion of the plug screw 21 and are inserted into the buffer block 29, so that the buffer block 29 is installed, the buffer block 29 is made of silica gel, and a lower end of the buffer block 29 is in a downward-convex dome shape. This design can avoid when the valve is closed flashboard 4 and 1 inner wall of valve body to produce the rigidity striking, plays the effect of protection flashboard 4 and valve body 1.

As shown in fig. 2, the lower end of the sealing plate 8 is provided with a guide slope 30. The guide slope 30 can provide a guiding effect for the sealing plate 8, so that the sealing plate 8 can be smoothly press-fitted with the corresponding valve seat 5.

As shown in fig. 2, a first wear-resistant coating 31 is provided on a side of the sealing plate 8 close to the valve seat 5, a second wear-resistant coating 32 is provided on a side of the valve seat 5 close to the sealing plate 8, and the first wear-resistant coating 31 and the second wear-resistant coating 32 are tungsten carbide coatings. The design can improve the wear resistance of the sealing surface of the sealing plate 8 and the valve seat 5, so that the service life of the valve is prolonged.

Claims

1. An extrusion type automatic sealing gate valve comprises a valve body (1), a valve cover (2), a valve rod (3) and a gate plate (4), wherein the valve cover (2) is installed at the upper end of the valve body (1), the valve rod (3) penetrates through the valve cover (2) and extends into the valve body (1), the inner end of the valve rod (3) is in linkage connection with the gate plate (4), and valve seats (5) which are used for forming sealing fit with the gate plate (4) are integrally arranged on the inner wall of the valve body (1) in positions corresponding to two sides of the gate plate (4) respectively; the method is characterized in that: flashboard (4) are including installation piece (6), compression spring (7) and two closing plates (8), installation piece (6) are connected with valve rod (3) inner linkage, the middle part of installation piece (6) is provided with spring chamber (9) along the axial run-through, and two closing plates (8) set up respectively in installation piece (6) both sides, and one side that closing plate (8) are close to installation piece (6) is provided with uide bushing (10) that stretches into in spring chamber (9), the outer wall of uide bushing (10) closely laminates with the inner wall in spring chamber (9), the tip embedding of compression spring (7) corresponds in uide bushing (10) of closing plate (8) and the tip of compression spring (7) supports tightly on closing plate (8) for two closing plate (8) are compressed tightly respectively on corresponding disk seat (5).

2. The extrusion type automatic sealing gate valve of claim 1, wherein: first spacing guide slot (11) have transversely been seted up along the upper end of closing plate (8), the upper end symmetry of installation piece (6) is provided with two first spacing cardboard (12), first spacing cardboard (12) cooperate with first spacing guide slot (11) that correspond, the spacing guide slot of second (13) has transversely been seted up along the lower extreme of closing plate (8), the lower extreme symmetry of installation piece (6) is provided with two spacing cardboard of second (14), the spacing cardboard of second (14) cooperatees with the spacing guide slot of second (13) that correspond.

3. The extrusion type automatic sealing gate valve of claim 1, wherein: the position that corresponds first spacing guide slot (11) and is close to the one end of installation piece (6) on closing plate (8) is equipped with first spacing step (15), the position that corresponds the one end that second spacing guide slot (13) is close to installation piece (6) on closing plate (8) is equipped with second spacing step (16).

4. The extrusion type automatic sealing gate valve of claim 1, wherein: a first screw hole (17) and a second screw hole (18) are respectively formed in the upper end and the lower end of the mounting block (6), a threaded section (19) matched with the first screw hole (17) is formed in the inner end of the valve rod (3), and a first pressing flange (20) used for pressing the first limiting clamping plate (12) to the upper end of the mounting block (6) when the threaded section (19) is connected into the first screw hole (17) is further arranged on the valve rod (3); the second screw hole (18) is connected with a screw plug (21) in a threaded manner, and a second pressing flange (22) used for pressing the second limiting clamping plate (14) at the lower end of the mounting block (6) is arranged at the outer end of the screw plug (21).

5. The extruded automatic sealing gate valve of claim 4, wherein: the mounting block is characterized in that a first positioning groove (23) is formed in the upper end of the mounting block (6), a first positioning protrusion (24) matched with the first positioning groove (23) is formed in the first limiting clamping plate (12), a second positioning groove (25) is formed in the lower end of the mounting block (6), and a second positioning protrusion (26) matched with the second positioning groove (25) is formed in the second limiting clamping plate (14).

6. The extruded automatic sealing gate valve of claim 4, wherein: the outer end of plug screw (21) is equipped with mounting groove (27), install buffer block (29) through fixed pin (28) on mounting groove (27), the lower extreme of buffer block (29) is the dome shape of convexity down.

7. The extrusion type automatic sealing gate valve of claim 1, wherein: the lower end of the sealing plate (8) is provided with a guide inclined plane (30).

8. The extrusion type automatic sealing gate valve of claim 1, wherein: one side of the sealing plate (8) close to the valve seat (5) is provided with a first wear-resistant coating (31), and one side of the valve seat (5) close to the sealing plate (8) is provided with a second wear-resistant coating (32).