CN219263289U

CN219263289U - Safety valve

Info

Publication number: CN219263289U
Application number: CN202320242957.1U
Authority: CN
Inventors: 蒋干; 赵国忠; 俞淼
Original assignee: Zhejiang Qixin Pipe Industry Co ltd
Current assignee: Zhejiang Qixin Pipe Industry Co ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-06-27
Anticipated expiration: 2033-02-17

Abstract

The utility model discloses a safety valve, which comprises a valve body, wherein the valve body comprises an opening and closing cavity, a pressure regulating cavity, an inflow port and an outflow port, a valve core is arranged in the opening and closing cavity, a pressure regulating part is arranged in the pressure regulating cavity, the outflow port is positioned on the side surface of the opening and closing cavity and is communicated with the opening and closing cavity, the opening and closing cavity is communicated or blocked with the inflow port through the valve core, the opening and closing cavity and the pressure regulating cavity are blocked through the pressure regulating part, the valve core and the pressure regulating part are coaxially arranged, the pressure regulating part comprises a guide rod, and the valve core can push the guide rod to extend out of the outer wall of the valve body. According to the utility model, the balls are arranged on the surface of the electric heating frame and are in contact with the roller ring, so that the heat conduction effect of the roller ring can be improved, and the rotation effect of the roller ring can be improved.

Description

Safety valve

Technical Field

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

Background

In the process of connecting the pipeline, the hose is sometimes connected with the water inlet pipeline, however, when the water pressure in the water inlet pipeline is excessive, the hose and the pipeline can be separated, and the problem is solved by arranging a safety valve between the pipeline and the hose and adjusting the safety valve at present;

the prior authorized bulletin number CN215487865U discloses a novel water purification safety valve, which has the defects that: the safety valve cannot visually observe the strength of water pressure, so that the safety valve cannot be timely adjusted, the risk of falling off of the hose and the water inlet pipe is high, and improvement on the safety valve is urgently needed.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide a safety valve, which can intuitively observe the water pressure by observing the length of the guide rod exposed out of the valve body. The safety valve is convenient to adjust in time.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a relief valve, includes the valve body, the valve body is including opening and shutting chamber, pressure regulating chamber, inflow port and egress opening, the intracavity that opens and shuts is equipped with the case, the pressure regulating intracavity is equipped with the pressure regulating piece, the egress opening is located the chamber side that opens and shuts and communicates with the chamber that opens and shuts, the chamber that opens and shuts passes through the case intercommunication or blocks with the inflow port, the chamber that opens and shuts blocks through the pressure regulating piece with the pressure regulating chamber, the case sets up with the pressure regulating piece is coaxial, the pressure regulating piece includes the guide bar, the case can promote the guide bar and stretch out the valve body outer wall.

The valve core outside cover is equipped with first spring, one end butt case is close to one side of inflow port and the other end butt pressure regulating piece is close to one side of valve core of first spring, the case side is equipped with the extension pole, the extension pole can butt or break away from the pressure regulating piece.

The pressure regulating chamber is kept away from the one end of chamber that opens and shuts and is opened and the opening part lid has closed the pressure regulating lid, the guide bar runs through the pressure regulating lid, the guide bar outside cover is equipped with the second spring, second spring one end butt pressure regulating lid inboard and the other end butt pressure regulating piece is close to one side of pressure regulating lid, the elasticity of second spring is greater than the elasticity of first spring.

The pressure regulating cover can move towards the opening and closing cavity and compress the second spring, an inner thread is arranged on the inner wall of the pressure regulating cavity, and the pressure regulating cover is in threaded connection with the inner thread.

The pressure regulating part comprises a piston, and the piston is in sealing fit with the inner wall of the pressure regulating cavity.

The inner wall of the opening and closing cavity is a conical surface, and the cross section size of the conical surface close to the inflow opening is smaller than that of the conical surface close to the outflow opening.

The inner wall of the conical surface is provided with a plurality of guide ribs, the valve core is located in an area surrounded by the guide ribs, and the valve core can move along the length direction of the guide ribs.

The outside of the valve core is fixedly provided with a sealing sleeve, the side wall of the sealing sleeve is in clearance fit with the guide rib, and the inflow port and the opening and closing cavity are blocked by the sealing sleeve.

The end part of the valve body, which is positioned at the inflow opening, is internally provided with a sealing table in an extending mode, a plurality of annular convex ribs are arranged on the inner side of the sealing table, the end part of the sealing sleeve can be abutted to the annular convex ribs, the end part of the sealing sleeve is provided with a boss, and the boss can be inserted into the inflow opening to be sealed.

And an external thread is arranged on the outer wall of the valve body at the opening and closing cavity.

The beneficial effects of the utility model are as follows:

by setting the elasticity of the second spring to be larger than that of the first spring, when the water flow pressure is not high, only the first spring is compressed, but the valve core is insufficient to push the pressure regulating piece to move; when the water pressure is too high, the valve core moves, the extension rod abuts against and pushes the pressure regulating part to move, so that the second spring is compressed, the guide rod is exposed out of the valve body, the strength of the water pressure can be visually reflected by observing the exposed quantity of the guide rod, the water pressure can be timely regulated, and the hose and the outflow opening are prevented from loosening; the distance between the regulating cover and the regulating piece is regulated by moving the regulating cover, so that the strength of the second spring on the elastic force of the regulating piece can be regulated, the water pressure can be regulated, when the water pressure is overlarge, the regulating cover is close to the regulating piece, and when the water pressure is smaller, the regulating cover is far away from the regulating piece.

Drawings

FIG. 1 is a cross-sectional view of the present utility model;

FIG. 2 is an enlarged view of FIG. 1 at A;

fig. 3 is a cross-sectional view of the pressure regulator.

In the figure: the valve comprises a valve body 1, an opening and closing cavity 11, a conical surface 111, guide ribs 112, a sealing table 113, an annular convex rib 114, a pressure regulating cavity 12, an inflow opening 13, an outflow opening 14, a limiting table 15, an external thread 16, an internal thread 17, a valve core 2, an extension rod 21, a sealing sleeve 3, a boss 31, a first spring 4, a pressure regulating piece 5, a guide rod 51, a piston 6, a pressure regulating cover 7, a guide hole 71 and a second spring 8.

Detailed Description

The utility model is further described with reference to the drawings and detailed description which follow:

in the description of the present specification, the azimuth or positional relationship indicated by the terms "upper", "lower", "left", "right", etc., are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or unit referred to must have a specific direction, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

As shown in fig. 1 to 3, a safety valve comprises a valve body 1, wherein the valve body 1 comprises an opening and closing cavity 11, a pressure regulating cavity 12, an inflow port 13 and an outflow port 14, the inflow port 13 can be communicated with water flow, and the outflow port 14 can be connected with an external hose;

the valve body is characterized in that a valve core 2 is arranged in the opening and closing cavity 11, the opening and closing cavity 11 is communicated with the inflow opening 13 through the valve core 2 or blocked, a sealing sleeve 3 is fixed on the outer side of the valve core 2, the inflow opening 13 is blocked with the opening and closing cavity 11 through the sealing sleeve 3, specifically, the end part of the valve body 1, which is positioned at the inflow opening 13, is inwards extended to be provided with a sealing table 113, a plurality of annular ribs 114 are arranged on the inner side of the sealing table 113, the end part of the sealing sleeve 3 can be abutted against the annular ribs 114, the sealing sleeve 3 is made of rubber, and the sealing effect of the position of the inflow opening 13 can be greatly improved through the cooperation of the sealing sleeve 3 and the annular ribs 114.

Preferably, the end of the sealing sleeve 3 is provided with a boss 31, and the boss 31 can be inserted into the inflow port 13 to seal, specifically, the boss 31 is closely attached to the inner wall of the inflow port 13, and by the above design, the sealing effect of the inflow port 13 can be further improved.

The valve core 2 can be movably communicated or closed with the inflow opening 13 and the outflow opening 14, the outflow opening 14 is located on the side face of the open-close cavity 11 and is communicated with the open-close cavity 11, a first spring 4 is sleeved outside the valve core 2, one end of the first spring 4 is abutted against one side of the valve core 2, which is close to the inflow opening 13, and the other end of the first spring is abutted against one side, which is close to the valve core 2, of the pressure regulating part 5, water flow in a pipeline can enter from the inflow opening 13, the first spring 4 can be driven to move and be compressed by water pressure generated by the water flow, the inflow opening 13 is communicated with the open-close cavity 11, the water flow passes through the inflow opening 13 and the open-close cavity 11 and finally flows out through the outflow opening 14, specifically, the inner wall of the open-close cavity 11 is a conical surface 111, the cross-section size of the conical surface 111, which is close to the inflow opening 13, is smaller than the cross-section size, which is close to the outflow opening 14, and when the valve core 2 moves towards the pressure regulating part 5, the distance between the side wall of the valve core 2 and the conical surface 111 is gradually increased, so that water flow can be greatly facilitated.

Preferably, a plurality of guide ribs 112 are provided on the inner wall of the conical surface 111, the valve core 2 is located in an area surrounded by the guide ribs 112, the side wall of the sealing sleeve 3 is in clearance fit with the guide ribs 112, the valve core 2 can move along the length direction of the guide ribs 112, and the valve core 2 can be guided in a moving manner by providing the plurality of guide ribs 112.

The pressure regulating chamber 12 is internally provided with the pressure regulating member 5, the opening and closing chamber 11 and the pressure regulating chamber 12 are blocked through the pressure regulating member 5, the valve core 2 and the pressure regulating member 5 are coaxially arranged, the pressure regulating member 5 comprises a guide rod 51, the valve core 2 can push the guide rod 51 to extend out of the outer wall of the valve body 1, specifically, the side surface of the valve core 2 is provided with an extension rod 21, the extension rod 21 can be abutted to or separated from the pressure regulating member 5, one end of the pressure regulating chamber 12, far away from the opening and closing chamber 11, is provided with the opening and closing cover 7 in a covering manner, the guide rod 51 penetrates through the pressure regulating cover 7, the pressure regulating cover 7 comprises a guide hole 71, the guide rod 51 penetrates through the guide hole 71, a second spring 8 is sleeved outside the guide rod 51, one end of the second spring 8 is abutted to the inner side of the pressure regulating cover 7, the other end of the second spring 8 is abutted to one side of the pressure regulating cover 5, which is close to the pressure regulating cover 7, the elastic force of the second spring 8 is larger than that of the first spring 4, and the pressure regulating cover 7 can move towards the opening and closing chamber 11 and compress the second spring 8.

By setting the elasticity of the second spring 8 to be larger than that of the first spring 4, when the water flow pressure is not high, only the first spring 4 is compressed, but the valve core 2 is insufficient to push the pressure regulating piece 5 to move; when the water pressure is too high, the valve core 2 moves, the extension rod 21 abuts against and pushes the pressure regulating piece 5 to move, so that the second spring 8 is compressed, the guide rod 51 is exposed out of the valve body 1, the strength of the water pressure can be visually reflected by observing the exposed quantity of the guide rod 51, the water pressure can be timely regulated, and the hose and the outflow opening 14 are prevented from loosening; the distance between the regulating cover 7 and the regulating piece 5 is regulated by moving the regulating cover 7, so that the strength of the elastic force of the second spring 8 to the regulating piece 5 can be regulated, the regulating cover 7 is close to the regulating piece 5 when the water pressure is overlarge, and the regulating cover 7 is far away from the regulating piece 5 when the water pressure is smaller.

Preferably, the inner wall of the pressure regulating cavity 12 is provided with an internal thread 17, and the pressure regulating cover 7 is in threaded connection with the internal thread 17, so that the pressure regulating cover 7 is conveniently regulated through threaded connection, and the pressure regulating cover 7 is more reliably fixed.

Preferably, a limiting table 15 is arranged between the opening and closing cavity 11 and the pressure regulating cavity 12, the end part of the pressure regulating piece 5 can be abutted against or separated from the limiting table 15, the pressure regulating piece 5 comprises a piston 6, the piston 6 is in sealing fit with the inner wall of the pressure regulating cavity 12, the pressure regulating piece 5 can be limited by arranging the limiting table 15, the pressure regulating piece 5 is prevented from exceeding the outflow opening 14, and the sealing effect of the opening and closing cavity 11 and the pressure regulating cavity 12 can be improved by arranging the piston 6, so that water leakage is prevented.

Preferably, the outer wall of the valve body 1 is provided with an external thread 16 at the opening and closing cavity 11, and an external pipeline can be connected with the valve body 1 through the external thread 16.

The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.

Claims

1. A safety valve, characterized in that: including valve body (1), valve body (1) are including opening and shutting chamber (11), pressure regulating chamber (12), inflow port (13) and egress opening (14), be equipped with case (2) in opening and shutting chamber (11), be equipped with pressure regulating piece (5) in pressure regulating chamber (12), egress opening (14) are located opening and shutting chamber (11) side and with opening and shutting chamber (11) intercommunication, opening and shutting chamber (11) and inflow port (13) are through case (2) intercommunication or blocking, opening and shutting chamber (11) and pressure regulating chamber (12) are through pressure regulating piece (5) blocking, case (2) and pressure regulating piece (5) coaxial setting, pressure regulating piece (5) are including guide bar (51), case (2) can promote guide bar (51) and stretch out valve body (1) outer wall.

2. A safety valve as claimed in claim 1, wherein: the valve core (2) outside cover is equipped with first spring (4), one end butt case (2) is close to one side of inflow port (13) and the other end butt pressure regulating piece (5) is close to one side of case (2), case (2) side is equipped with extension rod (21), extension rod (21) can butt or break away from pressure regulating piece (5).

3. A safety valve as claimed in claim 2, wherein: the one end that chamber (11) is opened and shut in pressure regulating chamber (12) is kept away from is opening and opening part lid and has been closed regulating cover (7), guide bar (51) run through regulating cover (7), guide bar (51) outside cover is equipped with second spring (8), one end butt regulating cover (7) inboard and the other end butt regulating piece (5) are close to one side of regulating cover (7), the elasticity of second spring (8) is greater than the elasticity of first spring (4).

4. A safety valve according to claim 3, wherein: the pressure regulating cover (7) can move towards the opening and closing cavity (11) and compress the second spring (8), an inner thread (17) is arranged on the inner wall of the pressure regulating cavity (12), and the pressure regulating cover (7) is in threaded connection with the inner thread (17).

5. A safety valve as claimed in claim 1, wherein: be equipped with spacing platform (15) between chamber (11) and pressure regulating chamber (12) that open and shut, pressure regulating piece (5) tip can butt or break away from spacing platform (15), pressure regulating piece (5) include piston (6), piston (6) and pressure regulating chamber (12) inner wall sealing fit.

6. A safety valve as claimed in claim 1, wherein: the inner wall of the opening and closing cavity (11) is a conical surface (111), and the cross section size of the conical surface (111) close to the inflow opening (13) is smaller than the cross section size close to the outflow opening (14).

7. A safety valve as set forth in claim 6, wherein: the inner wall of the conical surface (111) is provided with a plurality of guide ribs (112), the valve core (2) is positioned in an area surrounded by the guide ribs (112), and the valve core (2) can move along the length direction of the guide ribs (112).

8. A safety valve as set forth in claim 7, wherein: the valve core (2) is fixed with seal cover (3) in the outside, seal cover (3) lateral wall and direction muscle (112) clearance fit, inflow port (13) and open and shut chamber (11) are through seal cover (3) shutoff.

9. A safety valve as set forth in claim 8, wherein: the sealing device is characterized in that a sealing table (113) is arranged at the end part of the inflow opening (13) of the valve body (1) in an inward extending mode, a plurality of annular convex ribs (114) are arranged on the inner side of the sealing table (113), the end part of the sealing sleeve (3) can be abutted to the annular convex ribs (114), a boss (31) is arranged at the end part of the sealing sleeve (3), and the boss (31) can be inserted into the inflow opening (13) for sealing.

10. A safety valve as claimed in claim 1, wherein: an external thread (16) is arranged on the outer wall of the valve body (1) and positioned at the opening and closing cavity (11).