CN218094261U

CN218094261U - Long-life rotary cam type self-sealing flow regulating valve

Info

Publication number: CN218094261U
Application number: CN202222629130.4U
Authority: CN
Inventors: 李图东; 邬宗飞; 吕川
Original assignee: Chengdu Kangtuo Xingye Technology Co ltd
Current assignee: Chengdu Kangtuo Xingye Technology Co ltd
Priority date: 2022-10-08
Filing date: 2022-10-08
Publication date: 2022-12-20
Anticipated expiration: 2032-10-08

Abstract

The utility model discloses a rotatory cam-type self sealss flow control valve of high life, including first tubular valve body, the second tubular valve body, the valve seat, the valve pole, the valve lid, sealed the pad, the valve push pedal, the pressure spring resets, eccentric cam and actuating lever, the neighboring of valve seat is located between first tubular valve body and the second tubular valve body and interconnect, the central point of valve seat puts and is equipped with the valve seat sleeve pipe, the valve pole passes the valve seat sleeve pipe, the valve lid is connected with the one end of valve pole, sealed the pad is located the valve lid and can seal with the end of opening and close of valve seat, the valve push pedal is connected with the other end of valve pole, the both ends of pressure spring that resets respectively with valve push pedal and valve seat bushing, eccentric cam is connected with the one end of actuating lever and is located one side of valve push pedal. The sealing gasket and the valve seat of the utility model do not need to rotate relatively, so the abrasion of the sealing element is less, and the service life of the sealing element and the whole valve is long; the valve can be automatically sealed and closed after the external driving piece loses power.

Description

Long-life rotary cam type self-sealing flow regulating valve

Technical Field

The utility model relates to a flow control valve especially relates to a rotatory cam-type self sealss flow control valve of high life.

Background

The flow regulating valve is a valve for regulating the magnitude of fluid flow, and the basic principle is to regulate the magnitude of fluid flow at an outlet of the valve by regulating the magnitude of the opening of a valve core. Typical flow control valves, such as needle valves, ball valves and butterfly valves, may include manual valves and electric valves depending on the driving method, and electric valves are generally used to achieve precise flow control.

The basic principle of the traditional flow regulating valve is that a driving part drives a valve core and other rotating parts to rotate, the switching value is changed, the purpose of flow regulation is realized, and the following defects exist:

firstly, the sealing element is in close contact with the rotating element, the sealing element needs to bear the friction force generated in the rotating process of the rotating element, and after the sealing element is used for many times, the sealing element is easy to wear, so that the sealing performance is reduced, and the service life of a product is shortened; secondly, there is no automatic reset structure, and after the driving part loses power, the valve is in the opening state before losing power, for example, after power failure or driving motor damage, the valve cannot be closed in an automatic sealing manner, which may cause unnecessary fluid loss or cause potential safety hazard after equipment is shut down.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sealing member not with rotating member direct contact and can be in the rotatory cam-type self sealss flow control valve of high life who loses drive power back self-sealing just in order to solve above-mentioned problem.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a long-life rotary cam type self-sealing flow regulating valve comprises a first tubular valve body, a second tubular valve body, a valve seat, a valve rod, a valve cover, a sealing gasket, a valve push plate, a reset pressure spring, an eccentric cam and a driving rod, wherein a first end at two ends of the first tubular valve body is connected with a first end at two ends of the second tubular valve body, a second end at two ends of the first tubular valve body is an inlet end of the long-life rotary cam type self-sealing flow regulating valve, a second end at two ends of the second tubular valve body is an outlet end of the long-life rotary cam type self-sealing flow regulating valve, the peripheral edge of the valve seat is positioned between the first tubular valve body and the second tubular valve body and connected with each other, a valve seat sleeve is arranged at the central position of the valve seat, and a plurality of through holes are arranged between the valve seat sleeve and the peripheral edge of the valve seat, the valve rod passes valve seat sleeve pipe and in close contact with and can be in axial relative slip, the valve lid with the one end of valve rod is connected and is located in the first tubular valve body, the valve lid with leave the clearance between the inner wall of first tubular valve body, sealed the suit of central through-hole through self outside the valve rod and be located in the valve lid and can with the end is sealed open and close of valve seat, the valve push pedal with the other end of valve rod is connected and is located in the second tubular valve body, the pressure spring suit that resets outside the valve rod and its both ends respectively with the valve push pedal with valve seat bushing connects, eccentric cam with the one end of actuating lever is connected and is arranged in the second tubular valve body and be located one side of valve push pedal, eccentric cam can promote in self rotation process the valve push pedal with the valve rod is in the valve rod The central line of the driving rod is perpendicular to the central line of the valve rod, the other end of the driving rod penetrates through the corresponding through hole in the second tubular valve body and is positioned outside the second tubular valve body, and the driving rod is connected with the second tubular valve body in a sealing mode. The valve seat, the valve rod, the valve cover, the sealing gasket, the valve push plate and the reset pressure spring jointly form a valve structure with a self-sealing function.

Preferably, in order to achieve a better pushing effect and a larger pushing distance for the shutter push plate, the center line of the driving lever and the center line of the shutter lever intersect with each other.

Preferably, in order to facilitate reliable installation of the valve seat, the first end face of the first tubular valve body and the first end face of the second tubular valve body are respectively provided with an annular sinking groove with an L-shaped section, the peripheral edge of the valve seat is simultaneously arranged in the two annular sinking grooves, and the first end of the first tubular valve body is connected with the first end of the second tubular valve body through a screw.

Preferably, in order to improve the sealing performance between the valve seat and the first and second tubular valve bodies, two annular seal grooves are respectively formed in the bottoms of the annular sunken grooves, and two seal rings are respectively arranged in the two annular seal grooves.

Preferably, in order to facilitate reliable connection of the valve rod and the valve push plate, a blind hole is formed in one side, close to the valve rod, of the valve push plate, an internal thread is formed in the hole wall of the blind hole, an external thread is formed in the corresponding end portion of the valve rod, and the corresponding end portion of the valve rod is connected with the internal thread of the valve push plate through the external thread.

The beneficial effects of the utility model reside in that:

the utility model discloses a regard the valve structure as the case structure, utilize the pressure spring that resets to make the valve structure have self sealss function, and design eccentric cam and valve structure cooperation, it is rotatory through external drive strength (generally motor, also can be manual drive) control actuating lever, it is rotatory to drive eccentric cam in order to promote valve push pedal and valve lever removal, with the start-stop and the aperture of control valve structure, thereby realize fluid flow regulation function, do not need relative rotation between sealed pad and the valve seat, so avoided the sealing member to bear the problem of frictional force in the rotatory process of rotating member, the sealing member wearing and tearing are few, the life-span of sealing member and whole valve is high; after the external driving piece loses power, the valve can be automatically sealed and closed under the action of the reset pressure spring (on the premise that the driving piece does not have a positioning function after losing power), so that unnecessary fluid loss can be avoided, and potential safety hazards after equipment is shut down accidentally can be avoided.

Drawings

Fig. 1 is a schematic view of a sectional structure of a main view of a long-life rotary cam type self-sealing flow control valve.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings:

as shown in fig. 1, the high life rotary cam type self-sealing flow control valve of the present invention comprises a first tubular valve body 1, a second tubular valve body 10, a valve seat 5, a valve rod 7, a valve cover 2, a sealing gasket 3, a valve push plate 9, a reset compression spring 8, an eccentric cam 11 and a driving rod 12, wherein a first end (right end in the figure) of two ends of the first tubular valve body 1 is connected to a first end (left end in the figure) of two ends of the second tubular valve body 10, a second end (left end in the figure) of two ends of the first tubular valve body 1 is an inlet end of the high life rotary cam type self-sealing flow control valve, a second end (right end in the figure) of two ends of the second tubular valve body 10 is an outlet end of the high life rotary cam type self-sealing flow control valve, a peripheral edge of the valve seat 5 is located between the first tubular valve body 1 and the second tubular valve body 10 and connected to each other, a valve seat sleeve 6 is arranged at the central position of the valve seat 5, a plurality of through holes are arranged between the valve seat sleeve 6 and the peripheral edge of the valve seat 5, a valve rod 7 penetrates through the valve seat sleeve 6 and is in close contact with the valve seat sleeve 6 and can relatively slide in the axial direction, a valve cover 2 is connected with one end of the valve rod 7 and is integrally formed and is positioned in a first tubular valve body 1, a gap is reserved between the valve cover 2 and the inner wall of the first tubular valve body 1, a sealing gasket 3 is sleeved outside the valve rod 7 through a self central through hole and is positioned in the valve cover 2 and can be sealed with the opening and closing end of the valve seat 5, a valve push plate 9 is connected with the other end of the valve rod 7 and is positioned in a second tubular valve body 10, a reset pressure spring 8 is sleeved outside the valve rod 7 and is respectively connected with the valve push plate 9 and the valve seat sleeve 6 at two ends thereof, an eccentric cam 11 is connected with one end of a driving rod 12 and is positioned in the second tubular valve body 10 and is positioned in the valve 9 Laterally, the eccentric cam 11 can push the valve push plate 9 and the valve rod 7 to move axially on the valve rod 7 in the self-rotation process, the center line of the driving rod 12 is perpendicular to the center line of the valve rod 7, the other end of the driving rod 23 (invisible in the figure, but easy to understand) penetrates through a corresponding through hole in the second tubular valve body 10 and is positioned outside the second tubular valve body 10, and the driving rod 12 is connected with the second tubular valve body 10 in a sealing manner. The valve seat 5, the valve rod 7, the valve cover 2, the sealing gasket 3, the valve push plate 9 and the reset pressure spring 8 jointly form a valve structure with a self-sealing function.

Preferably, the center line of the driving rod 12 and the center line of the shutter lever 7 intersect with each other; the first end face of the first tubular valve body 1 and the first end face of the second tubular valve body 10 are respectively provided with an annular sinking groove with an L-shaped section, the peripheral edge of the valve seat 5 is simultaneously arranged in the two annular sinking grooves, and the first end of the first tubular valve body 1 is connected with the first end of the second tubular valve body 10 through a screw (not visible in the figure); the bottoms of the two annular sinking grooves are respectively provided with an annular sealing groove, and the two sealing rings 4 are respectively arranged in the two annular sealing grooves; one side of the valve push plate 9 close to the valve rod 7 is provided with a blind hole, the hole wall of the blind hole is provided with an internal thread, and the corresponding end part of the valve rod 7 is provided with an external thread and is connected with the internal thread of the valve push plate 9 through the external thread.

As shown in fig. 1, when the valve is in a closed state, the valve cover 2 and the sealing pad 3 are in close contact with the opening and closing end of the valve seat 5 under the dual actions of the elasticity of the reset pressure spring 8 and the fluid pressure, so as to achieve reliable sealing and closing; when the valve needs to be opened, the driving rod 12 and the eccentric cam 11 are controlled to rotate by an external driving piece, the valve push plate 9 and the valve rod 7 are pushed to move in the axial direction of the valve rod 7, so that the valve cover 2 and the sealing gasket 3 are driven to be separated from the opening and closing end of the valve seat 5, fluid in the first tubular valve body 1 enters the second tubular valve body 10 through a gap between the valve cover 2 and the inner wall of the first tubular valve body 1, the opening and closing end of the valve seat 5 and a plurality of through holes of the valve seat 5, and the purpose of opening the valve is achieved; the distance between the sealing gasket 3 and the opening and closing end of the valve seat 5 can be controlled by controlling the rotation angle of the driving piece (the maximum value of the rotation angle is less than 90 degrees), which is equivalent to controlling the opening of a valve, and finally the aim of controlling the flow of the fluid is achieved; when the valve needs to be closed, the driving piece is controlled to rotate reversely and reset, and under the dual actions of the elasticity of the reset pressure spring 8 and the fluid pressure, the valve cover 2, the sealing gasket 3, the valve rod 7 and the valve push plate 9 synchronously move reversely until the sealing gasket 3 is in close contact with the opening and closing end of the valve seat 5, so that reliable sealing and closing are realized. If the driving part loses power due to power failure or faults and the driving part does not have a positioning function, the valve mechanism can be automatically sealed and closed under the dual functions of the elasticity of the reset pressure spring 8 and the fluid pressure, so that unnecessary fluid loss can be avoided, and potential safety hazards caused after the equipment is shut down accidentally can be avoided.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and is not to the limitation of the technical solution of the present invention, as long as the technical solution can be realized on the basis of the above-mentioned embodiment without creative work, all should be regarded as falling into the protection scope of the right of the present invention.

Claims

1. The utility model provides a rotatory cam type of high life self seals flow control valve which characterized in that: including first tubular valve body, second tubular valve body, valve seat, valve rod, valve lid, sealed pad, valve push pedal, pressure spring, eccentric cam and actuating lever reset, first end in first tubular valve body both ends with first end interconnect in the second tubular valve body both ends, second end in first tubular valve body both ends is the entrance point of the rotatory cam-type self-sealing flow control valve of high life, second end in the second tubular valve body both ends is the exit end of the rotatory cam-type self-sealing flow control valve of high life, the peripheral edge of valve seat is located between first tubular valve body and the second tubular valve body and interconnect, the central point of valve seat puts and is equipped with the valve seat sleeve pipe, valve seat sleeve pipe with be equipped with a plurality of through-holes between the peripheral edge of valve seat, the valve rod passes valve seat sleeve pipe and in close contact and can be in the axial relative slip, the valve cover is connected with one end of the valve rod and is positioned in the first tubular valve body, a gap is reserved between the valve cover and the inner wall of the first tubular valve body, the sealing gasket is sleeved outside the valve rod through a self central through hole and is positioned in the valve cover and can be sealed with the opening and closing end of the valve seat, the valve push plate is connected with the other end of the valve rod and is positioned in the second tubular valve body, the reset pressure spring is sleeved outside the valve rod and is respectively connected with the valve push plate and the valve seat sleeve at two ends, the eccentric cam is connected with one end of the driving rod and is positioned in the second tubular valve body and on one side of the valve push plate, and the eccentric cam can push the valve push plate and the valve rod to move axially in the rotating process of the eccentric cam, the center line of the driving rod is perpendicular to the center line of the valve rod, the other end of the driving rod penetrates through the corresponding through hole in the second tubular valve body and is located outside the second tubular valve body, and the driving rod is connected with the second tubular valve body in a sealing mode.

2. The high life rotary cam self-sealing flow regulator valve of claim 1, wherein: the central line of the driving rod and the central line of the valve rod are crossed with each other.

3. The high life rotary cam self-sealing flow regulator valve of claim 1, wherein: the first end terminal surface of first tubular valve body with the first end terminal surface of second tubular valve body is equipped with the annular heavy groove just that the cross-section is "L" shape respectively the neighboring of valve seat arranges two simultaneously in the annular heavy inslot, the first end of first tubular valve body with pass through screwed connection between the first end of second tubular valve body.

4. The high life rotary cam self-sealing flow control valve of claim 3, wherein: the bottom of each annular sinking groove is provided with an annular sealing groove, and the two sealing rings are arranged in the annular sealing grooves respectively.

5. The high life rotary cam self-sealing flow control valve of any one of claims 1-4, wherein: the valve push plate is close to a blind hole formed in one side of the valve rod, an inner thread is formed in the hole wall of the blind hole, an outer thread is formed in the corresponding end portion of the valve rod, and the valve push plate is connected with the inner thread of the valve push plate through the outer thread.