CN216789240U

CN216789240U - Angle type multi-stage regulating valve

Info

Publication number: CN216789240U
Application number: CN202220484178.8U
Authority: CN
Inventors: 郑忠兴; 祁欢; 余孙杰; 池益鹏
Original assignee: Zhejiang Xinou Automatic Control Instrument Co ltd
Current assignee: Zhejiang Xinou Automatic Control Instrument Co ltd
Priority date: 2022-03-07
Filing date: 2022-03-07
Publication date: 2022-06-21
Anticipated expiration: 2032-03-07

Abstract

The utility model discloses an angle type multi-stage regulating valve which comprises a valve body, a valve cover, a valve rod and an executing mechanism for driving the valve rod to lift, wherein a valve cavity, an inlet flow channel and an outlet flow channel which are communicated with the valve cavity are arranged in the valve body; the utility model can realize gradual pressure reduction, reduce the damage to the regulating valve caused by erosion and prolong the service life of the valve.

Description

Angle type multi-stage regulating valve

Technical Field

The utility model relates to the technical field of regulating valves, in particular to an angle type multi-stage regulating valve.

Background

The angle type regulating valve can be divided into a pneumatic angle type regulating valve and an electric angle type regulating valve. The angle type regulating valve is specially used for the positions of large medium viscosity, easy crystallization, suspended particles and 90-degree bent joints, and the angle type regulating valve is convenient to sweep and simple to maintain and is widely applied because the angle type valve body has no dead angle. The valve clack can be arranged on a single seat or a balanced sleeve, and can be suitable for multi-stage adjustment on high pressure difference occasions. A multi-spring pneumatic membrane mechanism or an electric actuator, etc. can be selected.

The existing angle type regulating valve is eroded by fluid in the using process, so that the pressure can not be regulated, and the service life of the valve body is influenced.

Disclosure of Invention

The utility model aims to overcome the defects and shortcomings of the prior art and provide an angle type multi-stage regulating valve.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an angle formula multiple regulation valve, includes valve body, valve gap, valve rod and is used for driving actuating mechanism that the valve rod goes up and down, be provided with the valve pocket in the valve body, with the import runner and the exit runner of valve pocket intercommunication, be provided with the disk seat in the valve pocket and set up the first valve cage on the disk seat, the valve rod passes the valve body and gets into first valve cage inner chamber, the one end that the valve rod is located the inner chamber of first valve cage is equipped with and is used for sealing complex valve clack with the disk seat, first valve cage inner wall is provided with at least one annular bead, the valve clack outer wall is provided with at least one throttle portion, first valve cage lateral wall is provided with first through-flow hole, and the fluid gets into first valve cage inner chamber through the import runner when the disk seat is kept away from to the valve clack, reaches the exit runner through first through-flow hole at last.

In a preferred embodiment of the present invention, the throttle portion has an annular structure.

As a preferable aspect of the present invention, the upper edge and the lower edge of the throttle portion are smoothly and obliquely curved.

As a preferable technical solution of the present invention, at least two throttling parts are provided, and a certain distance exists between the throttling parts.

In a preferred embodiment of the present invention, an outer diameter of the throttle portion is adapted to an inner diameter of the first cage.

As a preferable technical solution of the present invention, a second valve cage is sleeved outside the first valve cage, a second flow through hole is formed in an outer wall of the second valve cage, the second flow through hole corresponds to the first flow through hole in position, a slow flow cavity is formed between the outer wall of the first valve cage and an inner wall of the second valve cage, and the slow flow cavity is used for communicating the first flow through hole and the second flow through hole.

As a preferred technical scheme of the utility model, a packing box is arranged between the valve cover and the valve rod, a packing gland is arranged on the packing box and extrudes packing in the packing box, the packing gland is connected to the valve cover through a locking bolt, and one end of the locking bolt, which is far away from the valve cover, is provided with a disc spring and a locking nut.

As a preferable technical solution of the present invention, the valve seat is provided with a valve port, and the valve port flow passage gradually decreases in width along the axial direction.

Compared with the prior art, the utility model has the beneficial effects that: through be provided with annular bead and the throttle portion of cooperation valve clack in first valve cage, can realize multistage pressure regulating, reduce the damage that fluid erosion brought the valve body, improve life, can effectively cushion when fluid gets into the valve body.

Drawings

FIG. 1 is a schematic structural view of the present embodiment;

FIG. 2 is a schematic illustration of a first cage of the present embodiment.

Reference numerals: 1. a valve body; 2. a valve stem; 3. a valve cover; 4. a valve cavity; 5. an inlet flow channel; 6. an outlet flow passage; 7. a first cage; 8. a valve seat; 9. a valve clack; 10. an annular rib; 11. a throttle section; 12. a first flow through hole; 13. a smooth oblique curved surface; 14. a second cage; 15. a second flow through hole; 16. a slow flow cavity; 17. a stuffing box; 18. a packing gland; 19. a disc spring; 20. locking the bolt; 21. locking the nut; 22. and (4) opening a valve.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the utility model easily understood, the utility model is further described below with reference to the specific embodiments and the attached drawings, but the following embodiments are only the preferred embodiments of the utility model, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative efforts belong to the protection scope of the present invention.

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

As shown in fig. 1 and 2, an angular multi-stage regulating valve includes a valve body 1, a bonnet 3, a valve rod 2, and an actuator for driving the valve rod 2 to lift, a valve cavity 4, an inlet flow passage 5 and an outlet flow passage 6 are disposed in the valve body 1, a valve seat 8 and a first valve cage 7 disposed on the valve seat 8 are disposed in the valve cavity 4, the valve rod 2 passes through the valve body 1 and enters an inner cavity of the first valve cage 7, a valve flap 9 for forming a sealing fit with the valve seat 8 is disposed at one end of the valve rod 2 located in the inner cavity of the first valve cage 7, a valve port 22 is disposed on the valve seat 8, the flow passage of the valve port 22 gradually decreases along an axial width, at least one annular rib 10 is disposed on an inner wall of the first valve cage 7, if a plurality of annular ribs 10 are disposed at certain intervals, at least one throttling portion 11 is disposed on an outer wall of the valve flap 9, a first flow through hole 12 is disposed on a side wall of the first valve cage 7, when the flap 9 is moved away from the valve seat 8, the fluid enters the interior of the first cage 7 via the inlet flow channel 5 and finally via the first flow opening 12 to the outlet flow channel 6.

Through be provided with annular bead 10 in first valve cage 7 and cooperate the throttle portion 11 of valve clack 9, can realize multistage pressure regulating, reduce the damage that fluid erosion brought valve body 1, improve valve life, can effectively cushion when fluid gets into in the valve body 1.

In this embodiment, the throttling portion 11 is an annular structure, the upper edge and the lower edge of the throttling portion 11 are smooth inclined curved surfaces 13, at least two throttling portions 11 are arranged, a certain distance exists between the throttling portions 11, and the arrangement makes a stroke path of fluid after entering the first valve cage 7 zigzag, so that multi-stage pressure regulation is realized, and impact force of the fluid is reduced.

In this embodiment, it is preferable that the outer diameter of the throttling portion 11 is matched with the inner diameters of the annular rib 10 and the first cage 7, so that the valve flap 9 and the first cage 7 do not interfere with each other, and the outer diameter of the first cage 7 can be larger or smaller than the diameter of the annular rib 10, which can be achieved by only ensuring that the bottom of the valve flap 9 can form a sealing fit with the valve seat 8.

A second valve cage 14 is arranged outside the first valve cage 7 in a sleeved mode, a second flow through hole 15 is formed in the outer wall of the second valve cage 14, the position of the second flow through hole 15 corresponds to that of the first flow through hole 12, a flow buffering cavity 16 is formed between the outer wall of the first valve cage 7 and the inner wall of the second valve cage 14, the flow buffering cavity 16 is used for communicating the first flow through hole 12 and the second flow through hole 15, and the first valve cage 7 and the second valve cage 14 can be further reduced in pressure and noise in a matched mode.

A packing gland 17 is arranged between the valve cover 3 and the valve rod 2, a packing gland 18 is arranged on the packing gland 17, the packing gland 18 extrudes packing in the packing gland 17, the packing gland 18 is connected to the valve cover 3 through a locking bolt 20, and a disc spring 19 and a locking nut 21 are arranged at one end, far away from the valve cover 3, of the locking bolt 20.

By arranging the disc spring 19 on the packing gland 18, the disc spring 19 is automatically compensated after being abraded, and maintenance-free is achieved.

While there have been shown and described what are at present considered the fundamental principles of the utility model, the essential features and advantages thereof, it will be understood by those skilled in the art that the present invention is not limited by the foregoing embodiments, but is by no means limited by the preferred embodiments described in the foregoing description, and that various changes and modifications may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.

Claims

1. The utility model provides an angle type multi-stage regulating valve, includes valve body, valve gap, case subassembly and is used for driving the actuating mechanism that case subassembly goes up and down, and the case subassembly includes the valve rod and sets up in the case of valve rod tip, be provided with the valve pocket in the valve body, with the inlet flow way and the exit flow way of valve pocket intercommunication, be provided with the disk seat in the valve pocket and set up the first valve cage on the disk seat, the valve rod passes the inner chamber that the valve body got into first valve cage, the one end that the valve rod is located first valve cage inner chamber is equipped with and is used for sealing complex valve clack with the disk seat, its characterized in that: the valve comprises a first valve cage and a second valve cage, wherein the inner wall of the first valve cage is provided with at least one annular convex edge, the outer wall of the valve clack is provided with at least one throttling part, the side wall of the first valve cage is provided with a first flow through hole, when the valve clack is far away from the valve seat, fluid enters the inner cavity of the first valve cage through an inlet flow passage and finally reaches an outlet flow passage through the first flow through hole.

2. The angular multi-stage regulator valve according to claim 1, wherein: the throttling part is of an annular structure.

3. The angle type multistage regulating valve according to claim 2, wherein: the upper edge and the lower edge of the throttling part are smooth inclined curved surfaces.

4. The angle type multistage regulating valve according to any one of claims 1 to 3, wherein: the throttling parts are at least two, and a certain distance exists between every two throttling parts.

5. The angular multi-stage regulator valve according to claim 1, wherein: the outer diameter of the throttling portion is matched with the inner diameter of the first valve cage.

6. The angular multi-stage regulator valve according to claim 1, wherein: the first valve cage overcoat is equipped with the second valve cage, the second valve cage outer wall is provided with the second flow hole, the second flow hole is corresponding with first flow hole position, form the unhurried current chamber between first valve cage outer wall and the second valve cage inner wall, the unhurried current chamber is used for communicateing first flow hole and second flow hole.

7. The angular multi-stage regulator valve according to claim 1, wherein: the packing gland device is characterized in that a packing box is arranged between the valve cover and the valve rod, a packing gland is arranged on the packing box and extrudes packing in the packing box, the packing gland is connected to the valve cover through a locking bolt, and a disc spring and a locking nut are arranged at one end, far away from the valve cover, of the locking bolt.

8. The angular multi-stage regulator valve according to claim 1, wherein: a valve port is formed in the valve seat, and a valve port flow channel is gradually reduced along the axial width.