CN218408541U - Sealing structure of control valve core - Google Patents

Abstract

The utility model discloses a seal structure of control valve core, which comprises a valve body, the vertical control lever that is equipped with in inside of valve body, the fixed case that has cup jointed in outer wall below of control lever, the fixed rubber cylinder that has cup jointed of outer wall of case, the rubber cylinder offsets tightly with the contact surface of valve body. This seal structure of control valve core, through the valve body, the control lever, a valve core, the cooperation between packing element and the sealed compensation subassembly, because of the tight relation of supporting of first rubber ring and cavity inner wall, can with inside air of cavity through erect hole and cross bore extrusion income annular inside, the inside atmospheric pressure of annular increases can support out the packing element to the outside part, can strengthen the tight effort of supporting between the opening inner wall in packing element and the valve body, compensate the operation to the lack compactness of packing element, need not to dismantle the whole change packing element of valve body, and the operation is comparatively simple convenient, make the duration performance of seal structure in the valve body promote.

Description

Sealing structure of control valve core

Technical Field

The utility model relates to a valve body technical field specifically is a seal structure of control valve core.

Background

The Control valve (Control valve) is made up of two main components: valve body assemblies and actuator assemblies (or actuator systems) fall into four major families: the variety of four types of valves can lead to a plurality of different applicable structures, each structure has special application, characteristics, advantages and disadvantages, although some control valves have wider application working conditions than other valves, the control valves cannot be suitable for all working conditions, and an optimal solution scheme for enhancing performance and reducing cost is constructed together.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a seal structure of control valve core, the seal structure of case and opening department is the rubber construction mostly in the present control valve who proposes in solving above-mentioned background art, it is frequent because of the friction between rubber tube and the opening inner wall after using for a long time, can lead to the local performance of tightening of rubber tube to reduce, then can appear the reduction of sealed effect, still can lead to leaking when serious and influence normal use, at this moment all be the rubber tube in the change case outside basically, need dismantle the maintenance with the valve body is whole, it is comparatively troublesome time-consuming, valve body seal structure's continuation of journey performance remains the promotion problem promptly.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing structure of a control valve core comprises a valve body, wherein a control rod is vertically arranged in the valve body, a valve core is fixedly sleeved below the outer wall of the control rod, a rubber cylinder is fixedly sleeved on the outer wall of the valve core, the rubber cylinder is tightly abutted to the contact surface of the valve body, and a sealing compensation assembly is arranged in the control rod;

the sealing compensation assembly comprises a groove, a screw rod, a groove block, a cavity, a supporting plate, a first rubber ring, a vertical hole, a transverse hole and a ring groove;

the recess is seted up on the top of control lever, the inside top threaded connection of recess has the lead screw, the top rigid coupling of lead screw has the groove piece, the below of lead screw is equipped with the cavity, the inside top at the control lever is seted up to the cavity, the outer wall bottom from the bottom up of lead screw is fixed has cup jointed two butts board in proper order, the fixed cup joint of outer wall of butts board has first rubber ring, the outer wall of first rubber ring offsets tightly with the inner wall of cavity, perpendicular hole has been seted up to the inside bottom of cavity, the cross bore has all been seted up to the inner wall bottom left and right sides of erecting the hole, the cross bore runs through the case, the outside of cross bore is equipped with the annular, the annular is the outer wall of annular seting up at the case.

Preferably, an auxiliary component is arranged inside the groove;

the auxiliary assembly comprises a cover plate, a second rubber ring, a convex block, a pull ring and a handle;

the apron is located the inside top of recess, the outer wall of apron is fixed to be cup jointed the second rubber ring, the outer wall of second rubber ring offsets tightly with the inner wall of recess, the upper surface center rigid coupling of apron has the lug, the equal rigid coupling in upper surface left and right sides of apron has the pull ring, the equal rigid coupling in lower surface left and right sides of apron has the handle.

Preferably, the handle is provided with grooves below the outer wall.

Compared with the prior art, the beneficial effects of the utility model are that: compared with the prior art, the sealing structure of the control valve core has the following advantages:

through the valve body, the control lever, the case, cooperation between rubber cylinder and the seal compensation subassembly, the inside performance of compacting of rubber cylinder reduces after a long time, can't ensure when supporting tight sealing effort between the opening in case and the valve body, operating personnel carries out the application of force to the groove piece and makes the lead screw rotate, because of the threaded connection relation between lead screw and the control lever, can make two to the board and first rubber ring all move down, this in-process is because of the tight relation of supporting of first rubber ring and cavity inner wall, can be inside cavity inside air passes through vertical hole and cross bore extrusion income annular, the inside atmospheric pressure of annular increases and can support out the rubber cylinder to the outside part, can strengthen the tight effort between rubber cylinder and the opening inner wall in the valve body, compensate the operation to the lack compactness of rubber cylinder, need not to dismantle the rubber cylinder with the valve body wholly, and the operation is comparatively simple and convenient, make the duration performance of seal structure in the valve body promote.

Through the cooperation between valve body, control lever, case, rubber cylinder, sealed compensation subassembly and the auxiliary assembly, apron and second rubber ring can prevent that external impurity from entering into the inside of recess, and when subsequent need carry out the application of force to the groove block and rotate, to the upward application of force of draw ring with apron and recess phase separation, can rotate its application of force inserting the inside top of groove block with the lug, can provide convenient for operating personnel.

Drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and features are not necessarily drawn to scale.

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

FIG. 2 is a schematic view of a connection structure of the valve body, the valve core and the rubber cylinder in FIG. 1;

fig. 3 is a schematic view showing a connection structure of the valve body, the control rod and the auxiliary assembly of fig. 1.

In the figure: 1. the valve comprises a valve body, 2, a control rod, 3, a valve core, 4, a rubber cylinder, 5, a sealing compensation component, 501, a groove, 502, a screw rod, 503, a groove block, 504, a cavity, 505, a support plate, 506, a first rubber ring, 507, a vertical hole, 508, a transverse hole, 509, a ring groove, 6, an auxiliary component, 601, a cover plate, 602, a second rubber ring, 603, a bump, 604, a pull ring, 605 and a handle.

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.

Referring to fig. 1-3, the present invention provides a technical solution: a sealing structure of a control valve core comprises a valve body 1, a control rod 2 is vertically arranged in the valve body 1, a valve core 3 is fixedly sleeved below the outer wall of the control rod 2, a rubber cylinder 4 is fixedly sleeved on the outer wall of the valve core 3, the rubber cylinder 4, a first rubber ring 505 and a second rubber ring 602 are all made of rubber and have certain toughness, the rubber cylinder 4 is abutted against the contact surface of the valve body 1, a sealing compensation assembly 5 is arranged in the control rod 2, the sealing compensation assembly 5 comprises a groove 501, a screw rod 502, a groove block 503, a cavity 504, a supporting plate 505, a first rubber ring 506, a vertical hole 507, a horizontal hole 508 and a ring groove 509, the groove 501 is arranged at the top end of the control rod 2, the top end in the groove 501 is connected with the screw rod 502 through threads, the top rigid coupling of lead screw 502 has groove block 503, the below of lead screw 502 is equipped with cavity 504, cavity 504 is seted up in the inside top of control lever 2, the fixed cover in proper order has two to board 505 of having connect to in the bottom of the outer wall bottom of lead screw 502 from the bottom up, the fixed cover of the outer wall of board 505 has connected first rubber ring 506, the outer wall of first rubber ring 506 offsets tightly with the inner wall of cavity 504, perpendicular hole 507 has been seted up to the inside bottom of cavity 504, the cross bore 508 has all been seted up to the inner wall bottom left and right sides of perpendicular hole 507, cross bore 508 all communicates each other with the inside of perpendicular hole 507 and annular groove 509, cross bore 508 runs through case 3, the outside of cross bore 508 is equipped with annular groove 509, annular groove 509 is the annular and sets up the outer wall at case 3.

Recess 501's inside is equipped with auxiliary assembly 6, auxiliary assembly 6 includes apron 601, second rubber ring 602, lug 603, pull ring 604 and handle 605, apron 601 is located recess 501's inside top, the outer wall of apron 601 is fixed to have cup jointed second rubber ring 602, the outer wall of second rubber ring 602 offsets tightly with recess 501's inner wall, the upper surface center rigid coupling of apron 601 has lug 603, lug 603 is square structure, lug 603 can insert the inside top of groove block 503 and carry out the joint, the equal rigid coupling in upper surface left and right sides of apron 601 has pull ring 604, the equal rigid coupling in lower surface left and right sides of apron 601 has handle 605, the outer wall below processing of handle 605 has the flute, the friction of handle 605 outer wall can be strengthened to the flute, be convenient for operating personnel to carry out the application of force to handle 605.

When the sealing structure of the control valve core is installed and used for a long time, the sealing performance of the rubber cylinder 4 is reduced, and the abutting sealing acting force between the valve core 3 and the through hole in the valve body cannot be guaranteed, an operator applies upward force to the pull ring 604 to separate the cover plate 601 from the groove 501, the lug 603 is inserted into the upper portion inside the groove block 503 to apply force to rotate, the lead screw 502 can rotate along with the groove block 503 in the process, the two abutting plates 505 and the first rubber ring 506 can move downwards due to the threaded connection relationship between the lead screw 502 and the control rod 2, the abutting acting force between the rubber cylinder 4 and the inner wall of the through hole in the cavity 504 can be enhanced due to the abutting relationship between the first rubber ring 506 and the inner wall of the cavity 504, the air inside the cavity 504 can be extruded into the annular groove 509 through the vertical hole 507 and the transverse hole 507, the air pressure inside the annular groove 509 is increased to abut the rubber cylinder 4 to the outer side part, the abutting acting force between the rubber cylinder 4 and the inner wall of the through hole in the valve body 1 can be enhanced, the insufficient tightness of the rubber cylinder 4 can be compensated, the sealing structure, the valve body 1 is not required to be integrally disassembled, and the rubber cylinder 4 is convenient to replace, and the sealing structure is convenient to promote the valve body, and the sealing structure can be popularized.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through an intermediate medium, and may be connected through the inside of two elements or in an interaction relationship between two elements, unless otherwise specifically defined, and the specific meaning of the above terms in the present invention will be understood by those skilled in the art according to specific situations.

It should be noted that, for the convenience of description, only the parts relevant to the related disclosure are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict; it should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units; it is noted that references to "a", "an", and "the" modifications in the present disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that reference to "one or more" unless the context clearly dictates otherwise; the names of messages or information exchanged between devices in the embodiments of the present disclosure are for illustrative purposes only, and are not intended to limit the scope of the messages or information.

In the present invention, the words "element", "component" and "material" are used only for the convenience of the related technical personnel to understand and realize the function, but not to limit and protect the component.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. The utility model provides a seal structure of control valve core, includes valve body (1), its characterized in that: a control rod (2) is vertically arranged in the valve body (1), a valve core (3) is fixedly sleeved below the outer wall of the control rod (2), a rubber cylinder (4) is fixedly sleeved on the outer wall of the valve core (3), the rubber cylinder (4) is abutted against the contact surface of the valve body (1), and a sealing compensation assembly (5) is arranged in the control rod (2);

the sealing compensation assembly (5) comprises a groove (501), a screw rod (502), a groove block (503), a cavity (504), a resisting plate (505), a first rubber ring (506), a vertical hole (507), a transverse hole (508) and a ring groove (509);

the top in control lever (2) is seted up in recess (501), the inside top threaded connection of recess (501) has lead screw (502), the top rigid coupling of lead screw (502) has groove block (503), the below of lead screw (502) is equipped with cavity (504), the inside top in control lever (2) is seted up in cavity (504), two butt plates (505) have been fixedly cup jointed from the bottom up in proper order to the outer wall bottom of lead screw (502), the outer wall rigid coupling of butt plate (505) has first rubber ring (506), the outer wall of first rubber ring (506) offsets tightly with the inner wall of cavity (504), perpendicular hole (507) has been seted up to the inside bottom of cavity (504), cross bore (508) has all been seted up to the inner wall bottom left and right sides of erecting hole (507), cross bore (508) runs through case (3), the outside of cross bore (508) is equipped with annular groove (509), annular groove (509) is the outer wall of annular division case (3).

2. A seal structure of a control valve cartridge according to claim 1, wherein: an auxiliary component (6) is arranged inside the groove (501);

the auxiliary assembly (6) comprises a cover plate (601), a second rubber ring (602), a convex block (603), a pull ring (604) and a handle (605);

apron (601) are located the inside top of recess (501), second rubber ring (602) has been cup jointed to the outer wall of apron (601) fixed, the outer wall of second rubber ring (602) offsets tightly with the inner wall of recess (501), the upper surface center rigid coupling of apron (601) has lug (603), the equal rigid coupling in the upper surface left and right sides of apron (601) has pull ring (604), the equal rigid coupling in the lower surface left and right sides of apron (601) has handle (605).

3. A seal structure of a control valve cartridge according to claim 2, wherein: grooves are processed below the outer wall of the handle (605).

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