CN217003344U

CN217003344U - Self-control coaxial stop valve

Info

Publication number: CN217003344U
Application number: CN202122001262.8U
Authority: CN
Inventors: 李金辉; 王燕
Original assignee: Dalian Fenglin Fluid Control Co ltd
Current assignee: Dalian Fenglin Fluid Control Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-07-19
Anticipated expiration: 2031-08-24

Abstract

The utility model provides an automatic control coaxial stop valve, which relates to the technical field of valves and comprises a valve main body, wherein one end of the valve main body is connected with a fluid inlet end cover, the fluid inlet end cover is connected with an inlet sealing connecting sleeve, the other end of the valve main body is connected with a fluid outlet end cover, the fluid outlet end cover is connected with an outlet sealing connecting sleeve, a controller and a pilot actuator are arranged outside the valve main body, and a driving piston, a piston rod, a throttling ring and a sealing support ring are arranged inside the valve main body. The throttling ring is arranged, the flow rate of fluid at the sealing end is limited when the valve is opened and closed, the pressure buffering effect is achieved, the impact force generated when the fluid is opened and closed is reduced, the overall structure is simple and compact, the action is flexible and reliable, the main body part has the characteristic of standard modularization, the normally open state or the normally closed state of the valve can be changed rapidly by increasing the position of the spring, and the throttling ring is suitable for occasions with various fluid forms.

Description

Self-control coaxial stop valve

Technical Field

The utility model relates to the technical field of valves, in particular to a self-control coaxial stop valve.

Background

The shut-off valve is also called a shut-off valve, and belongs to a forced sealing type valve, so when the valve is closed, pressure must be applied to the valve clack to force the sealing surface not to leak. When the medium enters the valve from the lower part of the valve clack, the resistance to be overcome by the operating force is the friction force between the valve rod and the packing and the thrust generated by the pressure of the medium, the force for closing the valve is larger than the force for opening the valve, so the diameter of the valve rod is larger, otherwise the failure of the valve rod buckling can occur.

The valve core of the existing stop valve is very fast in closing speed, the stop valve is directly installed on a connected pipeline under general conditions, and when the stop valve is rapidly opened or closed, elements and pipelines are damaged due to sudden change of local pressure. In summary, a stop valve that does not damage components and pipelines when the valve is opened or closed is desired.

SUMMERY OF THE UTILITY MODEL

The utility model provides an automatic control coaxial stop valve, which solves the problem that the existing stop valve can damage elements and pipelines when the valves are opened and closed.

In order to achieve the above purposes, the technical scheme adopted by the utility model is as follows:

the utility model provides a coaxial stop valve of automatic control which characterized in that: the valve comprises a valve body, wherein one end of the valve body is connected with a fluid inlet end cover, the fluid inlet end cover is connected with an inlet sealing connecting sleeve, the other end of the valve body is connected with a fluid outlet end cover, the fluid outlet end cover is connected with an outlet sealing connecting sleeve, a controller and a pilot actuator are arranged outside the valve body, and a driving piston, a piston rod, a throttling ring and a sealing support ring are arranged inside the valve body.

Preferably, a sealing ring is arranged in a connecting end face of the fluid inlet end cover and the valve main body, sealing rings are arranged on inner and outer end faces of the fluid inlet end cover and the fluid outlet end cover, a sealing ring is arranged on a connecting end face of the inlet sealing connecting sleeve and the fluid inlet end cover, and a sealing ring is arranged on a connecting end face of the outlet sealing connecting sleeve and the fluid outlet end cover.

Preferably, the outer wall of the inlet sealing connecting sleeve and the inner wall of the valve main body are sealed through a sealing ring, the inner wall of the inlet sealing connecting sleeve and the outer wall of one end of the piston rod are connected in a sealing mode through a sealing ring, the outer wall of the middle of the piston rod is connected with the driving piston, the outer wall of the other end of the piston rod and the inner wall of the outlet sealing connecting sleeve are connected in a sealing mode through a sealing ring, and the sealing edge face of the right end of the piston rod is connected with the sealing support ring.

Preferably, the controller and the pilot actuator are connected to the valve body by bolts.

Preferably, a throttle ring is arranged on the sealing support ring.

The utility model has the beneficial effects that:

according to the utility model, through the arrangement of the throttling ring, the pressure buffering effect is realized on the fluid, the throttling ring can block the operation of the fluid to a certain extent so as to reduce the impact force and limit the flow of the fluid to achieve the purpose of throttling, after throttling, the pressure of the sealing edge surface can be reduced, the sealing reliability is increased, and the problem that the existing stop valve can damage elements and pipelines when the valve is opened or closed is solved.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the present invention will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a front view cross-section of the present invention.

FIG. 2 is a top view cross-section of the present invention.

Fig. 3 is a view of the throttle ring opening of the present invention.

Fig. 4 is a closed view of a throttle ring according to the present invention.

The reference numbers indicate:

1. a fluid inlet end cap; 2. a valve body; 3. a fluid outlet end cap; 4. a controller; 5. a pilot actuator; 6. the inlet is sealed and connected with the sleeve; 7. a drive piston; 8. a piston rod; 9. the outlet is sealed and connected with the sleeve; 10. a restrictor ring; 11. and sealing and supporting rings.

Detailed Description

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the utility model. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus that are known by one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the directions or positional relationships indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the directions or positional relationships shown in the drawings for the convenience of description and simplicity of description, and that these directional terms, unless otherwise specified, do not indicate and imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be considered as limiting the scope of the utility model: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The utility model provides a technical scheme that: the self-control coaxial stop valve is structurally shown in figures 1-4 and comprises a valve main body 2, one end of the valve main body 2 is connected with a fluid inlet end cover 1, the fluid inlet end cover 1 is connected with an inlet sealing connecting sleeve 6, the other end of the valve main body 2 is connected with a fluid outlet end cover 3, the fluid outlet end cover 3 is connected with an outlet sealing connecting sleeve 9, a controller 4 and a pilot actuator 5 are arranged outside the valve main body 2, and the controller 4 and the pilot actuator 5 are connected with the valve main body 2 through bolts. The valve body 2 is internally provided with a drive piston 7, a piston rod 8, a throttle ring 10 and a seal support ring 11. The outer wall of the inlet sealing connecting sleeve 6 and the inner wall of the valve main body 2 are sealed through a sealing ring, the inner wall of the inlet sealing connecting sleeve 6 and the outer wall of one end of the piston rod 8 are connected through a sealing ring in a sealing mode, the middle outer wall of the piston rod 8 is connected with the driving piston 7, the outer wall of the other end of the piston rod 8 and the inner wall of the outlet sealing connecting sleeve 9 are connected through a sealing ring in a sealing mode, the sealing edge face of the right end of the piston rod 8 and the sealing support ring 11 are pressed into the V-shaped groove when the valve is closed, and a wedge-shaped sealing structure is formed. The connecting end face of the fluid inlet end cover 1 and the valve body 2 is internally provided with a sealing ring, the inner end face and the outer end face of the fluid inlet end cover 1 and the fluid outlet end cover 3 are respectively provided with a sealing ring, the connecting end face of the inlet sealing connecting sleeve 6 and the fluid inlet end cover 1 is provided with a sealing ring, and the connecting end face of the outlet sealing connecting sleeve 9 and the fluid outlet end cover 3 is provided with a sealing ring. The seal support ring 11 is provided with a throttle ring 10.

The working principle of the utility model is as follows, the controller 4 and the pilot actuator 5 control the electromagnet or fluid to generate driving force to push the driving piston 7, and the driving piston 7 drives the piston rod 8 to carry out axial movement, thus realizing the valve opening and closing actions.

The application process of the utility model is as follows: when the valve is used, the inner wall fluid channel groove of the piston rod 8 is attached to the outer wall of the throttling ring, so that the fluid flow is reduced, the pressure load of the cutting edge surface of the piston rod 8 and the pressure load of the sealing support ring 11 are reduced, and the sealing performance of the valve is improved.

The utility model provides a novel self-control coaxial stop valve, which has the function of pressure buffering on fluid through the arrangement of a throttle ring 10, when the fluid flows in through the throttle ring 10, the throttle ring 10 can block the operation of the fluid to a certain extent so as to reduce the impact force and limit the flow of the fluid to achieve the aim of throttling, the pressure after throttling can be reduced, the sealing reliability is improved, the use amount of parts is reduced, two functions of normally open and normally closed can be realized through increasing the position of a spring, and meanwhile, the main part has the characteristics of standard modularization, and has the advantages of compact structure and convenient and fast installation.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. The utility model provides a coaxial stop valve of automatic control which characterized in that: including valve main part (2), valve main part (2) one end is connected with fluid inlet end cover (1), fluid inlet end cover (1) links to each other with entry seal adapter sleeve (6), valve main part (2) other end is connected with fluid outlet end cover (3), fluid outlet end cover (3) link to each other with export seal adapter sleeve (9), valve main part (2) outside is provided with controller (4) and guide executor (5), inside drive piston (7), piston rod (8), throttle ring (10) and the seal support ring (11) of being provided with of valve main part (2).

2. The self-controlling coaxial shut-off valve according to claim 1, wherein: the sealing ring is arranged in the connecting end face of the fluid inlet end cover (1) and the valve main body (2), the sealing rings are arranged on the inner end face and the outer end face of the fluid inlet end cover (1) and the fluid outlet end cover (3), the sealing rings are arranged on the inlet sealing connecting sleeve (6) and the connecting end face of the fluid inlet end cover (1), and the sealing rings are arranged on the outlet sealing connecting sleeve (9) and the connecting end face of the fluid outlet end cover (3).

3. The self-controlling coaxial shut-off valve according to claim 1, wherein: the outer wall of entry sealing adapter sleeve (6) with it is sealed through the sealing washer between the inner wall of valve main part (2), the inner wall of entry sealing adapter sleeve (6) with through sealing washer sealing connection between the one end outer wall of piston rod (8), the middle wall connection drive piston (7) of piston rod (8), the other end outer wall of piston rod (8) with the inner wall of export sealing adapter sleeve (9) passes through sealing washer sealing connection, the sealed sword face of right-hand member of piston rod (8) is connected with sealed support ring (11).

4. The self-controlling coaxial shut-off valve according to claim 1, wherein: the controller (4) and the pilot actuator (5) are connected with the valve main body (2) through bolts.

5. The self-controlling coaxial shut-off valve of claim 1, wherein: the sealing support ring (11) is provided with a throttling ring (10).