CN220816669U - Pressure regulating type reflux valve - Google Patents

Abstract

The application belongs to the technical field of backflow valves, and discloses a pressure regulating type backflow valve which comprises a release pipe and a constant pressure pipe, wherein a fixing mechanism is arranged on the outer side of the upper part of the release pipe, the fixing mechanism comprises a threaded rod which is rotatably connected to the outer upper side of the release pipe, a movable plate is sleeved on the outer thread of the threaded rod, a fastening plate is fixedly connected to the upper side of the inner surface of the movable plate, a sliding circular groove is formed in the outer upper side of the release pipe, a matched sliding rod is connected in the sliding circular groove in a sliding manner, one end, far away from the bottom wall of the sliding circular groove, of the sliding rod is fixedly connected with the movable plate, a rubber sealing ring is arranged between the release pipe and the constant pressure pipe, and the release pipe and the constant pressure pipe are connected through a limiting mechanism; the application solves the problems that in the prior art, when the springs are replaced, a plurality of nuts are required to be detached one by means of tools, time and labor are wasted, and the assembly and the disassembly are inconvenient.

Description

Pressure regulating type reflux valve

Technical Field

The application relates to the technical field of backflow valves, in particular to a pressure regulating type backflow valve.

Background

The safety reflux valve is a valve for protecting a system from being damaged due to overhigh pressure, and can automatically release pressure once the pressure of medium in a system pipeline or device exceeds a set value, so that the aim of safety protection is achieved; the spring type safety valve mainly works by means of the acting force of a spring, the spring type safety valve is sealed and unsealed, a medium which is generally inflammable, explosive or toxic is selected to be sealed, steam or inert gas and the like can be selected to be unsealed, a spanner is arranged in the spring type safety valve, the spanner does not need to be arranged, the function of the spanner is mainly to check the flexibility degree of a valve clack, and the spring type safety valve can be used for manual emergency pressure relief in some cases; the lever type safety valve mainly depends on the acting force of the lever weight, but the lever type safety valve is huge and often limits the selection range, and the safety valve with a radiator is selected when the temperature is higher.

Via search disclosure (bulletin) number: CN212899944U discloses a backflow valve that the leakproofness is better, this application possesses better leakproofness including pressure release fixed disk … …, and the backward flow effect is good, is applicable to different scenes, and effectual saving cost simultaneously, but this application need dismantle a plurality of nuts with the help of the instrument one by one when changing the spring, wastes time and energy, has the inconvenient problem of installing and removing.

In order to solve the problems, the application provides a pressure regulating type reflux valve.

Disclosure of utility model

The application provides the following technical scheme: the utility model provides a pressure regulating formula return valve, includes release pipe and constant pressure pipe, the upper portion outside of release pipe is provided with fixed establishment, fixed establishment is including rotating the threaded rod of connecting in the outside upside of release pipe, and the outside screw thread of threaded rod has cup jointed the movable plate, the internal surface upside fixedly connected with fastening plate of movable plate, the slip circular slot has been seted up to the outside upside of release pipe, the inside sliding connection of slip circular slot has the slide bar of looks adaptation, and the slide bar is kept away from the one end and the movable plate fixed connection of slip circular slot diapire, be provided with rubber seal between release pipe and the constant pressure pipe, be connected through stop gear between release pipe and the constant pressure pipe.

Through above-mentioned technical scheme, solved prior art when changing the spring, need lift a plurality of nuts with the help of the instrument one by one, waste time and energy, there is the inconvenient problem of installing and removing.

Further, the limiting mechanism comprises a limiting hole and a limiting column, the lower part of the constant pressure pipe is provided with the limiting hole, and the top of the release pipe is fixedly connected with the limiting column which is matched with the limiting hole.

Through the technical scheme, the displacement of the constant pressure pipe is avoided.

Further, the limiting columns and the limiting holes are all arranged in a plurality of annular arrays, and the depth of the limiting holes is equal to the height of the limiting columns.

Furthermore, the fixing mechanisms are provided with a plurality of groups in total and are distributed in an annular array.

Further, one end of the threaded rod is rotatably connected with the upper side of the outside of the release pipe through a bearing, and the other end of the threaded rod is fixedly connected with a rotary handle.

Through above-mentioned technical scheme, utilize the rotation handle convenient rotatory threaded rod.

Further, the rotary handle is arranged in a disc-shaped structure, and anti-skidding lines are formed in the outer side of the rotary handle.

Through above-mentioned technical scheme, the design of anti-skidding line has increased the frictional force between rotation handle and the hand.

Further, the movable plate and the fastening plate are integrally formed, and one side, close to the constant pressure pipe, of the bottom end surface of the fastening plate is inclined.

Through above-mentioned technical scheme, be convenient for to the spacing fixed of lower extreme of constant pressure pipe.

In summary, the application has the following beneficial technical effects:

the screw rotating handle drives the threaded rod to rotate, the threaded rod rotates to enable the moving plate to move linearly, the moving plate moves linearly to drive the fastening plate to move in the direction away from the constant pressure pipe, the fastening plates are further enabled to release the downward pressing limit of the lower portion of the constant pressure pipe, the fastening plates are enabled to move to the outer side of the lower portion of the constant pressure pipe, then the constant pressure pipe is driven to move upwards, and the constant pressure pipe is enabled to be separated from the release pipe;

In conclusion, when the spring is replaced, the operation of detaching the plurality of nuts one by means of the tool is omitted, time and labor are saved, and the assembly and the disassembly are convenient.

Drawings

FIG. 1 is a schematic diagram of the structure of the present application;

FIG. 2 is a front view of the present application;

fig. 3 is a top view of a portion of the structure of the present application.

The reference numerals in the figures illustrate:

1. A release tube; 2. a rubber seal ring; 3. a constant pressure pipe; 4. a limiting hole; 5. a slide bar; 6. a threaded rod; 7. rotating the handle; 8. a moving plate; 9. a fastening plate; 10. a limit column; 11. sliding round groove.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application; it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments, and that all other embodiments obtained by persons of ordinary skill in the art without making creative efforts based on the embodiments in the present application are within the protection scope of the present application.

In the description of the present application, it should be noted that the positional or positional relationship indicated by the terms such as "upper", "lower", "inner", "outer", "top/bottom", etc. are based on the positional or positional relationship shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "configured to," "engaged with," "connected to," and the like are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art.

Examples:

The embodiment of the application discloses a pressure-regulating reflux valve, please refer to fig. 1, 2 and 3, comprising a release pipe 1 and a constant pressure pipe 3, wherein the outer side of the upper part of the release pipe 1 is provided with a fixing mechanism, a plurality of groups of fixing mechanisms are arranged in an annular array, the fixing mechanism comprises a threaded rod 6 which is rotationally connected to the upper side outside the release pipe 1, the threaded rod 6 is rotated, the threaded rod 6 rotates to limit the rotating force of a moving plate 8 due to the matching of a sliding rod 5 and a sliding circular groove 11, the moving plate 8 linearly moves, the moving plate 8 moves to drive a fastening plate 9 to move towards the direction close to the constant pressure pipe 3, the lower end top of the constant pressure pipe 3 is pressed down through the fastening plate 9 to limit the lower end of the constant pressure pipe 3, the lower end of the constant pressure pipe 3 is fixed, the rubber sealing ring 2 is pushed to move downwards to squeeze the rubber sealing ring 2, the rubber sealing ring 2 is elastically deformed, the lower end of the constant pressure pipe 3 is limited and fixed by the fastening plate 9, the quick connection between the constant pressure pipe 3 and the release pipe 1 is realized, the threaded rod 8 is conveniently and rapidly connected, the threaded rod 8 is arranged in a threaded structure, and the cross section of the threaded plate 8 is conveniently and movably sleeved outside the threaded plate 8 is arranged;

The inside surface upside fixedly connected with fastening plate 9 of movable plate 8, movable plate 8 and fastening plate 9 integrated into one piece set up, one side that the bottom surface of fastening plate 9 is close to constant pressure pipe 3 is the inclined plane setting, slip circular slot 11 has been seted up to the outside upside of release pipe 1, slip circular slot 11 is provided with eight altogether, the size of slip circular slot 11 and the big or small looks adaptation of slide bar 5, the inside sliding connection of slip circular slot 11 has slide bar 5 of looks adaptation, and slide bar 5 keep away from the one end and the movable plate 8 fixed connection of slip circular slot 11 diapire, be provided with rubber seal 2 between release pipe 1 and the constant pressure pipe 3, be connected through stop gear between release pipe 1 and the constant pressure pipe 3.

Referring to fig. 1 and 3, the limiting mechanism comprises a limiting hole 4 and a limiting column 10, the lower part of the constant pressure pipe 3 is provided with the limiting hole 4, the top of the release pipe 1 is fixedly connected with the limiting column 10 which is matched with the limiting hole 4, the limiting column 10 and the limiting hole 4 are all provided with a plurality of limiting columns which are distributed in an annular array, the depth of the limiting hole 4 is equal to the height of the limiting column 10, the cooperation of the limiting hole 4 and the limiting column 10 limits the constant pressure pipe 3, the release pipe 1 and the constant pressure pipe 3 are enabled to vertically correspond, the constant pressure pipe 3 is prevented from shifting, and the connection stability between the constant pressure pipe 3 and the release pipe 1 is further improved.

Referring to fig. 1, 2 and 3, one end of the threaded rod 6 is rotatably connected with the upper side of the outside of the release tube 1 through a bearing, the other end of the threaded rod 6 is fixedly connected with a rotating handle 7, the threaded rod 6 is conveniently rotated by the rotating handle 7, the rotating handle 7 is in a disc-shaped structure, anti-skid patterns are formed in the outer side of the rotating handle 7, and friction between the rotating handle 7 and the hands is increased due to the design of the anti-skid patterns.

The implementation principle of the embodiment of the application is as follows: when the spring is required to be replaced, the rotating handle 7 is screwed to drive the threaded rod 6 to rotate, the threaded rod 6 rotates to enable the moving plate 8 to linearly move due to the limitation of the rotating force of the moving plate 8 caused by the matching of the sliding rod 5 and the sliding circular groove 11, the moving plate 8 linearly moves to drive the fastening plate 9 to move in the direction away from the constant pressure pipe 3, the fastening plates 9 are further enabled to release the lower pressing limit of the constant pressure pipe 3, the fastening plates 9 are enabled to move to the outer side of the lower portion of the constant pressure pipe 3, at the moment, the constant pressure pipe 3 can be driven to move upwards, the constant pressure pipe 3 is enabled to be separated from the releasing pipe 1, the operation of detaching the nuts one by means of tools is omitted, time and labor are saved, and the assembly and the disassembly are convenient.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims (7)

1. The utility model provides a pressure regulating formula return valve, includes release pipe (1) and constant pressure pipe (3), its characterized in that: the utility model discloses a release pipe, including release pipe (1), release pipe (1) upper portion outside is provided with fixed establishment, fixed establishment is including rotating threaded rod (6) of connecting in release pipe (1) outside upside, and the outside screw thread of threaded rod (6) has cup jointed movable plate (8), the internal surface upside fixedly connected with fastening plate (9) of movable plate (8), slide circular slot (11) have been seted up to the outside upside of release pipe (1), slide circular slot (11)'s inside sliding connection has slide bar (5) of looks adaptation, and slide bar (5) are kept away from slide circular slot (11) one end and movable plate (8) fixed connection of groove diapire, be provided with rubber seal (2) between release pipe (1) and constant pressure pipe (3), be connected through stop gear between release pipe (1) and the constant pressure pipe (3).

2. A pressure regulating return valve according to claim 1, wherein: the limiting mechanism comprises a limiting hole (4) and a limiting column (10), the lower part of the constant pressure pipe (3) is provided with the limiting hole (4), and the top of the release pipe (1) is fixedly connected with the limiting column (10) which is matched with the limiting hole (4).

3. A pressure regulating return valve according to claim 2, wherein: the limiting columns (10) and the limiting holes (4) are all arranged in a plurality of annular arrays, and the depth of the limiting holes (4) is equal to the height of the limiting columns (10).

4. A pressure regulating return valve according to claim 1, wherein: the fixing mechanisms are arranged in a plurality of groups and are distributed in an annular array.

5. A pressure regulating return valve according to claim 1, wherein: one end of the threaded rod (6) is rotatably connected with the upper side of the outside of the release pipe (1) through a bearing, and the other end of the threaded rod (6) is fixedly connected with a rotary handle (7).

6. A pressure regulating return valve according to claim 5, wherein: the rotary handle (7) is arranged in a disc-shaped structure, and anti-skidding patterns are formed in the outer side of the rotary handle (7).

7. A pressure regulating return valve according to claim 1, wherein: the movable plate (8) and the fastening plate (9) are integrally formed, and one side, close to the constant pressure pipe (3), of the bottom end surface of the fastening plate (9) is in an inclined plane.