CN217003104U

CN217003104U - Cage type regulating valve with buffering function

Info

Publication number: CN217003104U
Application number: CN202220554279.8U
Authority: CN
Inventors: 杨余奔; 葛亚均; 余文豪
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-07-19
Anticipated expiration: 2032-03-14

Abstract

The utility model relates to a cage type regulating valve with a buffering function, which comprises a valve body, a valve cover, a valve rod and a valve core assembly, wherein the valve cover is arranged at the opening part of the valve body, one end of the valve rod penetrates through the valve cover to extend into the valve body and is connected with the valve core assembly, an S-shaped flow passage is arranged in the valve body, a cylindrical valve seat is arranged in the S-shaped flow passage, a plurality of fluid through holes are arranged on the cylindrical valve seat, the valve core assembly comprises a valve core sleeve, a valve core cover covering the opening part of the valve core sleeve, a throttling cylinder and a spring buffering mechanism, and the cage type regulating valve is characterized in that: the valve core sleeve is characterized in that an annular yielding hole is formed in the bottom of the valve core sleeve, the part with the throttling hole on the throttling cylinder penetrates out of the valve core sleeve along the annular yielding hole, the upper part of the throttling cylinder is fixedly connected to the valve core sleeve, and the spring buffer mechanism is arranged between the throttling cylinder and the valve rod. The throttling cylinder and the valve core are processed and assembled in a split mode, and the throttling cylinder and the valve core have the advantage of being compact in structure.

Description

Cage type regulating valve with buffering function

Technical Field

The utility model relates to the technical field of valves, in particular to a cage type regulating valve.

Background

The cage type regulating valve is a pressure balance type regulating valve, the valve inner part adopts a sleeve-guided pilot-operated valve core, the quick action of the valve core is realized by mainly utilizing the pressure of fluid, and the operating force is small. The valve core of cage type regulating valve slides axially in the cylindrical valve seat, the cylindrical valve seat is provided with a fluid through hole, the valve core is in sealing fit with the valve seat, and the rapid abrasion of the contact surface of the cylindrical valve seat and the valve core is caused in order to avoid the valve core from being propped against the cylindrical valve seat under the action of overlarge external force, thereby leading to the reduction of the sealing property. At present, the valve core is connected with the valve rod by adopting a buffer structure, so that when the valve seat is subjected to overlarge contact force, the valve rod can compress the buffer structure to buffer, thereby reducing the impact force on a sealing contact surface and protecting the sealing performance. However, the pressure reduction adjustment of the cage type adjusting valve only adopts single-pole throttling adjustment of a cylindrical valve seat, so that the throttling and pressure reducing effects are insufficient; therefore, in the 'cage type pressure reducing valve' disclosed in chinese patent No. CN202120323896.2, a throttle cylinder is axially formed on a valve core in an extending manner, when the valve is in an open position, the throttle cylinder corresponds to a cylindrical valve seat, and a medium is subjected to two throttling pressure reduction processes, so as to reduce fluid noise; however, the throttle cylinder and the valve core are integrally formed, and the valve core is a component with a sealing contact surface, which is a component easy to damage, and the integral forming causes inconvenience for later maintenance and replacement.

Disclosure of Invention

The utility model aims to: in order to overcome the defects in the prior art, the utility model provides the cage type regulating valve which is provided with the throttling cylinder and the valve core which are processed and assembled in a split mode, has a compact structure and has a valve core buffering function.

In order to realize the purpose, the utility model provides the following technical scheme:

the utility model provides a cage type adjusting valve with buffer function, includes valve body, valve gap, valve rod and case subassembly, and the valve body oral area is located to the valve gap lid, and valve rod one end is passed the valve gap and is stretched into in the valve body and connect in the case subassembly, is equipped with S type runner in the valve body, is equipped with the tube-shape disk seat in the S type runner, is equipped with a plurality of fluid through-holes on the tube-shape disk seat, the case subassembly is including case sleeve, lid in case sleeve oral area' S case lid, throttle cylinder and spring buffer gear, its characterized in that: the valve core sleeve is characterized in that an annular yielding hole is formed in the bottom of the valve core sleeve, the part with the throttling hole on the throttling cylinder penetrates out of the valve core sleeve along the annular yielding hole, the upper part of the throttling cylinder is fixedly connected to the valve core sleeve, and the spring buffer mechanism is arranged between the throttling cylinder and the valve rod.

By adopting the technical scheme, the valve core sleeve with the sealing function and the throttling cylinder are assembled after being processed in a split mode, the valve core sleeve with the sealing function and the throttling cylinder are convenient to process, the processing precision control and the later maintenance replacement are convenient, and the spring buffer mechanism is arranged between the throttling cylinder and the valve rod, so that the structure is more compact.

Preferably, a throttle section of thick bamboo is connected with the assembly neck including the tubbiness main part of taking the orifice, tubbiness main part upper portion, and integrated into one piece has on the assembly neck valve core lid, assembly neck center are equipped with the buffering assembly chamber, and buffering assembly chamber oral area has spacing clamp plate, have on the spacing clamp plate with the shaft hole of stepping down of buffering dabber upper portion location, spacing clamp plate will cushion the dabber restriction in the buffering assembly intracavity, spring buffer gear includes buffer spring and buffering dabber, and buffering dabber axial middle part is equipped with the spring support flange, and buffering dabber location sliding fit is in the buffering assembly intracavity, and buffer spring supports on the diapire in spring support flange and buffering assembly chamber. Under this structural design, a throttle cylinder and a valve core are connected into a whole, a buffer component is assembled on the throttle cylinder, and when a later-stage sealing part is maintained, a valve core cover is unscrewed, so that a valve core sleeve with a seal can be detached independently, and the maintenance is convenient.

Preferably, the buffer spring is a plurality of stacked disc springs. Under this structural design, the dish spring has the advantage that occupies smallly, compact structure.

Preferably, a buffer cavity is arranged between the assembling neck and the valve core sleeve, a lower flow guide hole leading to the buffer cavity is formed in the top of the barrel-shaped main body, and an upper flow guide hole communicated with the buffer cavity is formed in the valve core cover. The axial acting force of the fluid on the valve core is balanced.

The utility model is further described below with reference to the accompanying drawings.

Drawings

FIG. 1 is a schematic diagram of a cage-type regulating valve with a buffering function according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a valve core assembly according to an embodiment of the present invention.

Detailed Description

Referring to the attached drawings 1 and 2, the utility model discloses a cage type regulating valve with a buffering function, which comprises a valve body 1, a valve cover 2, a valve rod 3 and a valve core assembly 4, wherein the valve cover 2 is arranged at the opening part of the valve body 1 in a covering manner, one end of the valve rod 3 penetrates through the valve cover 2 to extend into the valve body 1 and is connected with the valve core assembly 4, an S-shaped flow passage 11 is arranged in the valve body 1, a cylindrical valve seat 5 is arranged in the S-shaped flow passage 11, a plurality of fluid through holes 51 are arranged on the cylindrical valve seat 5, the valve core assembly 4 comprises a valve core sleeve 41, a valve core cover 42 covering the opening part of the valve core sleeve 41, a throttle cylinder 43 and a spring buffer mechanism 44, the bottom of the valve core sleeve 41 is provided with an annular abdicating hole 411, the part of the throttle cylinder 43 with the throttle hole 4311 penetrates out of the valve core sleeve 41 along the annular abdicating hole 411, the upper part of the throttle cylinder 43 is fixedly connected to the spool sleeve 41, and the spring buffer mechanism 44 is arranged between the throttle cylinder 43 and the valve rod 3. The valve core sleeve 41 and the throttling cylinder 43 with sealing functions are assembled after being processed in a split mode, the valve core sleeve is convenient to process, processing precision control and later maintenance and replacement are facilitated, and the spring buffer mechanism 44 is installed between the throttling cylinder 43 and the valve rod 3, so that the structure is more compact.

The throttling cylinder 43 comprises a barrel-shaped main body 431 with a throttling hole 4311, an assembly neck 432 is connected to the upper portion of the barrel-shaped main body 431, the valve core cover 42 is integrally formed on the assembly neck 432, a buffering assembly cavity 4321 is arranged at the center of the assembly neck 432, a limiting pressure plate 45 is arranged at the mouth of the buffering assembly cavity 4321, an abdicating shaft hole positioned at the upper portion of the buffering mandrel 442 is formed in the limiting pressure plate 45, the buffering mandrel 442 is limited in the buffering assembly cavity 4321 by the limiting pressure plate 45, the spring buffering mechanism 44 comprises a buffering spring 441 and a buffering mandrel 442, a spring supporting flange 4421 is arranged at the axial middle portion of the buffering mandrel 442, the buffering mandrel 442 is positioned and slidably matched in the buffering assembly cavity 4321, and the buffering spring 441 is supported on the bottom walls of the spring supporting flange 4421 and the buffering assembly cavity 4321. Under the structural design, the throttling cylinder 43 and the valve core are connected into a whole, the buffering component is assembled on the throttling cylinder 43, and when a later sealing part is maintained, the valve core cover 42 is screwed off, so that the valve core sleeve 41 with the seal can be detached independently, and the maintenance is facilitated. The upper portion of the barrel-shaped body 431 is connected with an assembling neck 432, which can be integrally formed or assembled after being processed separately. In this embodiment, the two components are integrally formed.

The buffer spring 441 is a disc spring in which a plurality of discs are stacked. The disc spring has the advantages of small occupied volume and compact structure.

The assembling neck 432 is designed to have a smaller diameter, a buffer cavity a is formed between the assembling neck 432 and the spool sleeve 41, a lower guide hole 4312 leading to the buffer cavity a is formed in the top of the barrel-shaped main body 431, and an upper guide hole 421 communicating with the buffer cavity a is formed in the spool cover 42. The fluid flows axially through the lower diversion hole 4312, the buffer cavity a and the upper diversion hole 421, so as to balance the axial acting force of the fluid on the valve core. An inward flange 52 extending in an inward turning manner is arranged at the lower end of the cylindrical valve seat 5, and the bottom end of the spool sleeve 41 is matched with the inward flange 52 in a stopping manner.

Claims

1. The utility model provides a cage type adjusting valve with buffer function, includes valve body, valve gap, valve rod and case subassembly, and the valve body oral area is located to the valve gap lid, and valve rod one end is passed the valve gap and is stretched into in the valve body and connect in the case subassembly, is equipped with S type runner in the valve body, is equipped with the tube-shape disk seat in the S type runner, is equipped with a plurality of fluid through-holes on the tube-shape disk seat, the case subassembly is including case sleeve, lid in case sleeve oral area' S case lid, throttle cylinder and spring buffer gear, its characterized in that: the valve core sleeve is characterized in that an annular yielding hole is formed in the bottom of the valve core sleeve, the part with the throttling hole on the throttling cylinder penetrates out of the valve core sleeve along the annular yielding hole, the upper part of the throttling cylinder is fixedly connected to the valve core sleeve, and the spring buffer mechanism is arranged between the throttling cylinder and the valve rod.

2. The cage-type adjusting valve with a buffering function as claimed in claim 1, wherein: a throttle section of thick bamboo is connected with the assembly neck including the tubbiness main part of taking the orifice, tubbiness main part upper portion, and integrated into one piece has on the assembly neck valve core lid, assembly neck center are equipped with buffering assembly chamber, and buffering assembly chamber oral area has spacing clamp plate, have on the spacing clamp plate with the shaft hole of stepping down of buffering dabber upper portion location, spacing clamp plate will cushion the dabber restriction at buffering assembly intracavity, spring buffer gear includes buffer spring and buffering dabber, and buffering dabber axial middle part is equipped with the spring support flange, and buffering dabber location sliding fit is at buffering assembly intracavity, and buffer spring supports on the diapire of spring support flange and buffering assembly chamber.

3. The cage-type adjusting valve with a buffering function according to claim 2, wherein: the buffer spring is a plurality of stacked disc springs.

4. The cage type adjusting valve with a buffering function according to claim 2 or 3, wherein: a buffer cavity is arranged between the assembling neck and the valve core sleeve, a lower flow guide hole leading to the buffer cavity is formed in the top of the barrel-shaped main body, and an upper flow guide hole communicated with the buffer cavity is formed in the valve core cover.