CN217463282U

CN217463282U - Steadiness support knife gate valve

Info

Publication number: CN217463282U
Application number: CN202221143521.9U
Authority: CN
Inventors: 金锦祥; 杨仁勇
Original assignee: Zhejiang Yongguan Valve Co ltd
Current assignee: Zhejiang Yongguan Valve Co ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-09-20
Anticipated expiration: 2032-05-11

Abstract

The utility model discloses a steadiness support knife gate valve, including valve body, valve rod, flashboard, pneumatic actuator and be used for connecting valve body and pneumatic actuator's linking bridge, valve rod one end is connected with the flashboard that is located the valve body runner, and the other end passes the valve body to be connected with pneumatic actuator, the valve body top is provided with the packing box that is used for placing the packing, its characterized in that: the connecting support comprises a first mounting seat, a second mounting seat and a plurality of supporting rods for connecting the first mounting seat and the second mounting seat, external threads are arranged at the end parts of two sides of the valve rod, two ends of the valve rod are respectively in threaded connection with the first mounting seat and the second mounting seat, the first mounting seat and the second mounting seat are respectively connected with the pneumatic actuator and the valve seat, a detachable packing gland is arranged in the middle of the second mounting seat, and a through hole for the flashboard to pass through is formed in the packing gland; the utility model discloses knife gate valve light in weight, structure are light and handy, practice thrift manufacturing cost and equipment convenience.

Description

Steadiness support knife gate valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a steadiness support knife gate valve.

Background

The knife gate valve is also called knife gate valve or knife type slurry valve, its opening and closing member is a flashboard, the movement direction of the flashboard is perpendicular to the fluid direction, the medium is cut off by the blade-shaped flashboard which can cut the fiber material, the flashboard has two sealing surfaces, the two sealing surfaces of the most commonly used mode flashboard valve form a wedge shape, the wedge angle is different with the valve parameter, usually 50, the flashboard of the wedge type knife gate valve can be made into a whole, called rigid flashboard; the gate plate can also be made into a gate plate capable of generating micro deformation so as to improve the manufacturability of the gate plate and compensate the deviation of the angle of the sealing surface in the machining process, and the gate plate is called an elastic gate plate.

The existing knife gate valve comprises a valve body, a pneumatic or manual actuating mechanism and a connecting bracket for connecting the valve body and the pneumatic or manual actuating mechanism, but the existing connecting bracket is usually formed by forging, has large integral volume and high cost, and can increase the weight of the knife gate valve, so that the knife gate valve has room for improvement.

Disclosure of Invention

The utility model aims at overcoming the shortcoming and not enough that prior art exists, and provide a steadiness support knife gate valve.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a steadiness support knife gate valve, includes valve body, valve rod, flashboard, pneumatic actuator and is used for connecting valve body and pneumatic actuator's linking bridge, valve rod one end is connected with the flashboard that is located the valve body runner, and the other end passes the valve body to be connected with pneumatic actuator, the valve body top is provided with the packing box that is used for placing the packing, linking bridge includes first mount pad, second mount pad and is used for connecting a plurality of bracing pieces between them, the both sides tip part of valve rod be provided with the both ends of external screw thread and valve rod respectively with first mount pad and second mount pad threaded connection, first mount pad and second mount pad are connected with pneumatic actuator and disk seat respectively, second mount pad middle part is provided with detachable gland, the last through-hole that supplies the flashboard to pass of offering of gland.

As a preferred technical scheme of the utility model, first mount pad and second mount pad are the rectangle, a side is seted up respectively and is the mounting groove of rectangle to first mount pad and second mount pad are kept away from each other, the lateral part is located the mounting groove of first mount pad under the pneumatic actuator, the upside part of valve body is located the mounting groove of second mount pad.

As a preferred technical scheme of the utility model, the both sides of first mount pad and second mount pad are provided with the screw hole respectively and are used for the locking bolt with screw hole threaded connection.

As an optimized technical scheme of the utility model, the bracing piece is provided with four and four the connecting rod is the rectangle and arranges.

As an optimized technical proposal of the utility model, the supporting rod is in the shape of a long rod.

As a preferred technical scheme of the utility model, gland's outer wall is provided with the external screw thread, second mount pad and gland threaded connection.

As a preferred technical scheme of the utility model, the diameter that gland bottom was provided with ring channel and ring channel is greater than the diameter of through-hole, be provided with compression spring in the ring channel, roof looks butt in compression spring's one end and the ring channel, the other end and the filler looks butt that is located the packing box.

As an optimized technical scheme of the utility model, the outer wall of flashboard is provided with the tetrafluoroethylene coating.

As a preferred technical scheme of the utility model, be provided with a side end face and a flashboard side end face of the sealing washer and the sealing washer that are O shape in the valve body runner and laminate mutually.

As an optimal technical scheme of the utility model, the diapire corresponds the end position and is provided with sunkenly under the flashboard in the valve body runner, the contained angle that forms between the both sides wall of recess is the acute angle, tip shape adaptation under sunken shape and the flashboard.

Compared with the prior art, the beneficial effects of the utility model are that: through setting up the bracing piece and being connected with first mount pad and second mount pad respectively, the equipment is convenient, and the structure is light and handy, stable strong, compares in the linking bridge that current integrative casting formed, reduces the whole weight of knife gate valve, practices thrift manufacturing cost.

Drawings

FIG. 1 is a sectional view of the present embodiment;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is a schematic view showing the structure of the connecting bracket according to the present embodiment;

fig. 4 is an enlarged view of a portion B of fig. 1.

Reference numerals: 1. a valve body; 2. a valve stem; 3. a gate plate; 4. a pneumatic actuator; 5. connecting a bracket; 6. a filler; 7. a stuffing box; 8. a first mounting seat; 9. a second mounting seat; 10. a support bar; 11. a packing gland; 12. a through hole; 13. mounting grooves; 14. a threaded hole; 15. locking the bolt; 16. an annular groove; 17. a compression spring; 18. a seal ring; 19. and (4) sinking.

Detailed Description

In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand, the present invention will be further explained below with reference to the following embodiments and the accompanying drawings, but the following embodiments are only the preferred embodiments of the present invention, and not all embodiments are included. Based on the embodiments in the embodiment, those skilled in the art can obtain other embodiments without making creative efforts, and all of them belong to the protection scope of the present invention.

Specific embodiments of the present invention will be described below with reference to the accompanying drawings.

A firm support knife gate valve as shown in fig. 1 to 4 comprises a valve body 1, a valve rod 2 and a gate plate 3, pneumatic actuator 4 and be used for connecting valve body 1 and pneumatic actuator 4's linking

bridge

5, 2 one end of valve rod is connected with the flashboard 3 that is located 1 runner of valve body, the other end passes valve body 1 and is connected with pneumatic actuator 4, 1 top of valve body is provided with the packing box 7 that is used for placing packing 6, linking bridge 5 includes first mount pad 8, second mount pad 9 and be used for connecting a plurality of bracing pieces 10 between them, the both sides tip part of valve rod 2 is provided with the external screw thread and the both ends of valve rod 2 respectively with first mount pad 8 and second mount pad 9 threaded connection, first mount pad 8 and second mount pad 9 are connected with pneumatic actuator 4 and disk seat respectively, second mount pad 9 middle part is provided with detachable gland 11, gland 11 is last to set up the through-hole 12 that supplies flashboard 3 to pass.

Through setting up bracing piece 10 and being connected with first mount pad 8 and second mount pad 9 respectively, the equipment is convenient, and the structure is light and handy, stable strong, compares in the linking bridge 5 that current integrative casting formed, reduces the whole weight of knife gate valve, practices thrift manufacturing cost.

First mount pad 8 and second mount pad 9 are the rectangle, and first mount pad 8 and second mount pad 9 keep away from a side each other and offer respectively and be the mounting groove 13 of rectangle, and pneumatic actuator 4 downside part is located the mounting groove 13 of first mount pad 8, the upside part of valve body 1 is located the mounting groove 13 of second mount pad 9.

Both sides of the first mounting seat 8 and the second mounting seat 9 are respectively provided with a threaded hole 14 and a locking bolt 15 for being in threaded connection with the threaded hole 14.

The bracing piece 10 is provided with four and four the connecting rod is the rectangle and arranges, and the bracing piece 10 is long rod-shaped, improves linking strength of linking bridge 5, guarantees linking bridge 5's stability.

The outer wall of the packing 6 gland is provided with external threads, the second mounting seat 9 is in threaded connection with the packing 6 gland, the axial position of the packing 6 gland can be finely adjusted, and the sealing performance between the packing 6 and the pressure regulating gland is guaranteed.

The bottom of the gland of the packing 6 is provided with an annular groove 16, the diameter of the annular groove 16 is larger than that of the through hole 12, a compression spring 17 is arranged in the annular groove 16, one end of the compression spring 17 is abutted to the inner top wall of the annular groove 16, the other end of the compression spring is abutted to the packing 6 located in the packing 6 box, and the compression spring 17 is in a compressed state after being installed to extrude the packing 6 so as to ensure the sealing performance between the packing 6 and the valve rod 2.

The outer wall of flashboard 3 is provided with the tetrafluoroethylene coating, and acid and alkali corrosion resistance has improved acid and alkali corrosion resistance's performance.

Be provided with in the runner of valve body 1 and be O shape sealing washer 18 and a side end face of sealing washer 18 and flashboard 3 side end face laminating mutually, guarantee the leakproofness between flashboard 3 and the valve body 1, avoid leaking flashboard 3 long-term use edge leakage.

The diapire is provided with sunken 19 corresponding 3 tip positions of flashboard in the valve body 1 runner, the contained angle that forms between the both sides wall of recess is the acute angle, sunken 19 shape and 3 tip shape adaptations of flashboard, and the partial sunken 19 of sinking when flashboard 3 is closed in, just so can guarantee the leakproofness at flashboard 3 edge, and the contained angle between the sunken 19 both sides wall is preferred 30 in this embodiment.

The basic principles, main features and advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and only the preferred embodiments of the present invention have been described in the above embodiments and the description, and the present invention is not limited by the above embodiments, and the present invention can be further modified and improved without departing from the spirit and scope of the present invention, which fall within the scope of the present invention as claimed, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a steadiness support knife gate valve, includes valve body, valve rod, flashboard, pneumatic actuator and is used for connecting valve body and pneumatic actuator's linking bridge, valve rod one end is connected with the flashboard that is located the valve body runner, and the other end passes the valve body to be connected with pneumatic actuator, the valve body top is provided with the packing box that is used for placing the packing, its characterized in that: the connecting support comprises a first mounting seat, a second mounting seat and a plurality of supporting rods for connecting the first mounting seat and the second mounting seat, the end parts of the two sides of the valve rod are provided with external threads, the two ends of the valve rod are in threaded connection with the first mounting seat and the second mounting seat respectively, the first mounting seat and the second mounting seat are connected with the pneumatic actuating mechanism and the valve seat respectively, a detachable packing gland is arranged in the middle of the second mounting seat, and a through hole for the flashboard to pass through is formed in the packing gland.

2. The stability carrier knife gate valve of claim 1, wherein: the pneumatic actuator is characterized in that the first installation seat and the second installation seat are rectangular, one side of the first installation seat, which is far away from the second installation seat, is provided with a rectangular installation groove, the lower side part of the pneumatic actuator is positioned in the installation groove of the first installation seat, and the upper side part of the valve body is positioned in the installation groove of the second installation seat.

3. The stability carrier knife gate valve of claim 2, wherein: and threaded holes and locking bolts used for being in threaded connection with the threaded holes are respectively arranged on two sides of the first mounting seat and the second mounting seat.

4. The stability carrier knife gate valve of claim 1, wherein: the bracing piece is provided with four and four the bracing piece is the rectangle and arranges.

5. A stability support knife gate valve according to claim 4, wherein: the support rod is in a long rod shape.

6. The stability carrier knife gate valve of claim 1, wherein: the outer wall of the packing gland is provided with external threads, and the second mounting seat is in threaded connection with the packing gland.

7. A robust rack knife gate valve as in claim 6 wherein: the packing gland is characterized in that an annular groove is formed in the bottom of the packing gland, the diameter of the annular groove is larger than that of the through hole, a compression spring is arranged in the annular groove, one end of the compression spring is abutted against the inner top wall of the annular groove, and the other end of the compression spring is abutted against packing located in the packing box.

8. The stability carrier knife gate valve of claim 1, wherein: and a tetrafluoroethylene coating layer is arranged on the outer wall of the flashboard.

9. The stability carrier knife gate valve of claim 1, wherein: and an O-shaped sealing ring is arranged in the valve body flow passage, and one side end face of the sealing ring is attached to one side end face of the flashboard.

10. The stability carrier knife gate valve of claim 1, wherein: the diapire corresponds the end position under the flashboard and is provided with sunkenly in the valve body runner, the contained angle that forms between the sunken both sides wall is the acute angle, tip shape adaptation under sunken shape and the flashboard.