CN212804423U - Safety relief valve that sealing performance is good - Google Patents

Abstract

The utility model relates to a relief valve technical field especially relates to a safety relief valve that sealing performance is good. The to-be-solved technical problem of the utility model is that the inside spring of the partial relief valve that exists is not convenient for replace on the market and leads to the maintenance cost higher. In order to solve the technical problem, the utility model provides a safety relief valve that sealing performance is good, including the valve body, the one end of valve body is provided with the thread groove. The utility model discloses in the use, rotate the screw cap through the user and make it break away from main threaded rod and time threaded rod surface after take off buffer spring and rotate the pressure regulating screw ring and make it break away from the valve body surface with the help of the thread groove, promote main threaded rod this moment and make it remove and drive the rubber buffer equidirectional removal and also break away from the valve body until the rubber buffer in the pressure release opening, only need grip pressure release spring this moment and rotate the rubber buffer and make pressure release spring break away from main spacing chamber and time spacing chamber after take out new pressure release spring and carry out reverse operation in order to accomplish replacement work.

Description

Safety relief valve that sealing performance is good

Technical Field

The utility model relates to a relief valve technical field specifically is a safety relief valve that sealing performance is good.

Background

The pressure relief valve is one kind of valve, the work of relieving pressure usually appears under the higher condition of pressure in pipe-line system, in order to prevent that the too big condition that leads to pressure system impaired and the safety problem of appearing of pipe-line system internal pressure, the pressure relief valve that exists on the market all possesses outstanding leakproofness usually but generally can't convenient and automatic adjustment pressure release speed, the pressure relief valve that possesses automatic adjustment pressure release speed has been proposed in utility model pressure relief valve (application number 2016211103326), but its structure leads to the spring to be convenient for replace when damaging, can only carry out the whole replacement of pressure relief valve, and because of the structure of pressure relief valve makes the spring very easily take place to damage and make the life of pressure relief valve have the reduction to be replaced in the use with the comparatively moist environment in the periphery, nevertheless if lead to the maintenance cost higher to the pressure relief valve whole replacing.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a safety relief valve that sealing performance is good has solved the inside spring of partial relief valve that exists in the market and is not convenient for replace and lead to the higher problem of maintenance cost.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a safety relief valve with good sealing performance comprises a valve body, wherein a thread groove is formed in one end of the valve body, a pressure relief port is formed in one side of the top and the bottom of the valve body, a pressure regulating thread ring is sleeved on the surface thread of the thread groove, an annular sliding groove is formed in the inner wall of the pressure regulating thread ring, an annular sliding block is movably sleeved in the annular sliding groove, a steering wheel is fixedly sleeved in the annular sliding block, a holding block is welded on one side of the steering wheel, a main limiting cavity is formed in the other side of the steering wheel, a rubber plug is movably sleeved in the valve body, a secondary limiting cavity is formed in one side of the rubber plug, the main limiting cavity and the secondary limiting cavity are fixedly connected through a pressure relief spring, a main threaded rod is arranged on the other side of the top and the other side of the bottom of the valve body, a secondary threaded rod is fixedly connected to the top and the bottom of the, and one side of every two switching rings opposite is fixedly connected with the main threaded rod through a buffer spring, and a threaded cap is sleeved on one end of the main threaded rod and one end of the secondary threaded rod in a threaded manner.

Further preferably, the volumes of the main limiting cavity and the secondary limiting cavity are the same, and the inner walls of the main limiting cavity and the secondary limiting cavity are arranged in a threaded mode.

Preferably, the number of the pressure relief through holes is two, and the two pressure relief through holes are symmetrically arranged by taking the axial lead of the valve body as a central line.

Further preferably, the shapes of the inner walls of the depression section of the main threaded rod and the secondary threaded rod and the depression section of the adapter ring are circular, and the diameters of the depression section of the main threaded rod and the secondary threaded rod and the diameter of the depression section of the adapter ring are the same.

Preferably, the secondary threaded rod is perpendicular to the axis of the valve body, and the primary threaded rod is perpendicular to the axis of the valve body.

Further preferably, the rubber buffer all is circular with the side section of valve body inner wall, and the rubber buffer is the same with the area of valve body inner wall side section.

(III) advantageous effects

The utility model provides a safety relief valve that sealing performance is good possesses following beneficial effect:

(1) rotate the screw cap through the user and make it break away from main threaded rod and secondary threaded rod surface after with buffer spring take off and rotate pressure regulating screw ring and make it break away from the valve body surface with the help of the thread groove, promote main threaded rod this moment and make it remove and drive the rubber buffer and carry out equidirectional removal until the rubber buffer also breaks away from the valve body inside, only need grip pressure release spring this moment and be close the rubber buffer and be close the one end of steering wheel direction, and rotate the rubber buffer respectively and be close to and take out new pressure release spring and carry out reverse operation in order to accomplish pressure release spring's replacement work behind steering wheel messenger pressure release spring break away from main spacing chamber and the secondary spacing chamber.

(2) The same messenger steering wheel and rubber buffer and pressure release spring's connected state through the volume in main spacing chamber and inferior spacing chamber possesses the same stability, and the inner wall in main spacing chamber and inferior spacing chamber all sets up with the form of screw thread and makes its portability that can restrict pressure release spring to the rubber stopper only can carry out lateral compression and can not rotate when removing and lead to its break away from preset position.

Drawings

FIG. 1 is a front sectional view of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the valve body of the present invention;

fig. 3 is a side view of the steering wheel structure of the present invention;

FIG. 4 is a side view of the pressure regulating threaded ring structure of the present invention;

fig. 5 is a side view of the rubber plug structure of the present invention.

In the figure: the hydraulic pressure-relief steering wheel comprises a valve body 1, a thread groove 2, a pressure-relief through hole 3, a pressure-regulating thread ring 4, an annular sliding groove 5, an annular sliding block 6, a steering wheel 7, a holding block 8, a main limiting cavity 9, a rubber plug 10, an auxiliary limiting cavity 11, a pressure-relief spring 12, a main threaded rod 13, an auxiliary threaded rod 14, an adapter ring 15, a buffer spring 16 and a thread cap 17.

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 work belong to the protection scope of the present invention.

Referring to fig. 1-5, the present invention provides a technical solution: a safety relief valve with good sealing performance comprises a valve body 1, wherein one end of the valve body 1 is provided with a thread groove 2, one side of the top and one side of the bottom of the valve body 1 are respectively provided with two pressure relief through ports 3, the two pressure relief through ports 3 are symmetrically arranged by taking the axial lead of the valve body 1 as a central line, so that air pressure can be uniformly discharged from two directions when the valve body 1 discharges pressure, and the situation that the pressure relief through ports 3 are damaged due to over-concentrated pressure discharge is prevented, the surface thread of the thread groove 2 is sleeved with a pressure regulating thread ring 4, the inner wall of the pressure regulating thread ring 4 is provided with an annular sliding groove 5, an annular sliding block 6 is movably sleeved in the annular sliding groove 5, a steering wheel 7 is fixedly sleeved in the annular sliding block 6, one side of the steering wheel 7 is welded with a holding block 8, the other side of the steering wheel 7 is provided with a main limiting cavity 9, a rubber plug 10 is movably sleeved in, the side section of rubber buffer 10 and the inner wall of valve body 1 all is circular, and the area of rubber buffer 10 and the inner wall side section of valve body 1 is the same, set up like this and make the outer wall of rubber buffer 10 and the relative one side of valve body 1 inner wall can not produce extra clearance, prevent that the pressure in the valve body 1 directly passes the clearance between rubber buffer 10 and valve body 1 and lead to rubber buffer 10 can't play the effect of restriction pressure, and one side of rubber buffer 10 is provided with inferior spacing chamber 11, main spacing chamber 9 is the same with inferior spacing chamber 11's volume, and main spacing chamber 9 all sets up with the form of screw thread with inferior spacing chamber 11's inner wall, it makes its portability that can restrict pressure release spring 12 to set up like this and makes steering wheel 7 and rubber buffer 10 and pressure release spring 12's connected state possess the same stability, and main spacing chamber 9 and inferior spacing chamber 11's inner wall all sets up with the form of screw thread and makes it can restrict pressure release spring 12's mobility, so that pressure release spring From predetermineeing the position, main spacing chamber 9 passes through pressure release spring 12 fixed connection with inferior spacing chamber 11, and the opposite side of 1 top of valve body and bottom all is provided with main threaded rod 13, and the top of rubber buffer 10 and the equal fixedly connected with time threaded rod 14 in bottom, main threaded rod 13 has cup jointed switching ring 15 with the equal activity in surface of time threaded rod 14, and 16 fixed connection are passed through buffer spring in per two one side that switching ring 15 is relative, screw cap 17 has been cup jointed with the equal screw thread in one end of time threaded rod 14 to main threaded rod 13.

The working principle is as follows: when the safety relief valve with good sealing performance is used, a user rotates the screw cap 17 to separate the screw cap from the surfaces of the main threaded rod 13 and the secondary threaded rod 14, the moving capacity of the adapter ring 15 is not limited any more, at the moment, the adapter ring 15 is pulled down to separate the adapter ring from the surfaces of the main threaded rod 13 and the secondary threaded rod 14, the buffer spring 16 is taken down, then the pressure regulating threaded ring 4 is rotated to separate the pressure regulating threaded ring 4 from the surface of the valve body 1 through the threaded groove 2, the holding block 8 is held in the process of rotating the pressure regulating threaded ring 4 to prevent the situation that the steering wheel 7 rotates in the same direction to cause the over-torsion of the pressure relief spring 12, after the pressure regulating threaded ring 4 is taken out, the main threaded rod 13 is pushed to move in the pressure relief port 3 and drive the rubber plug 10 to move in the same direction until the rubber plug 10 is also separated from the interior of the valve body 1, and rotate rubber buffer 10 respectively and be close to steering wheel 7 and make pressure release spring 12 break away from main spacing chamber 9 and secondary spacing chamber 11 after take out new pressure release spring 12 and carry out reverse operation in order to accomplish the replacement work of pressure release spring 12, replacement easy operation is convenient and fast and has guaranteed still to possess outstanding stability to replace back equipment structure when having avoided carrying out a large amount of accessories and having replaced.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention.

Claims (6)

1. The utility model provides a safety relief valve that sealing performance is good, includes valve body (1), its characterized in that: one end of the valve body (1) is provided with a thread groove (2), the top of the valve body (1) and one side of the bottom of the valve body are both provided with a pressure relief port (3), the surface thread of the thread groove (2) is sleeved with a pressure regulating thread ring (4), the inner wall of the pressure regulating thread ring (4) is provided with an annular sliding groove (5), an annular sliding block (6) is sleeved in the annular sliding groove (5) in an inner movement manner, a steering wheel (7) is fixedly sleeved in the annular sliding block (6), one side of the steering wheel (7) is welded with a holding block (8), the other side of the steering wheel (7) is provided with a main limiting cavity (9), a rubber plug (10) is sleeved in the valve body (1) in an inner movement manner, one side of the rubber plug (10) is provided with a secondary limiting cavity (11), the main limiting cavity (9) and the secondary limiting cavity (11) are fixedly connected through a pressure relief spring (12), and the other sides of, and the top and the equal fixedly connected with time threaded rod (14) in bottom of rubber buffer (10), switching ring (15) have been cup jointed in the equal activity in surface of main threaded rod (13) and time threaded rod (14), and per two relative one sides of switching ring (15) are through buffer spring (16) fixed connection, screw cap (17) have been cup jointed with the equal screw thread in one end of time threaded rod (14) in main threaded rod (13).

2. The safety relief valve with good sealing performance according to claim 1, characterized in that: the volume of the main limiting cavity (9) is the same as that of the secondary limiting cavity (11), and the inner walls of the main limiting cavity (9) and the secondary limiting cavity (11) are arranged in a threaded mode.

3. The safety relief valve with good sealing performance according to claim 1, characterized in that: the quantity of pressure release opening (3) is two, and two pressure release openings (3) use the axial lead of valve body (1) as the central line symmetry setting.

4. The safety relief valve with good sealing performance according to claim 1, characterized in that: the shapes of the depression section of the main threaded rod (13) and the secondary threaded rod (14) and the depression section inner wall of the adapter ring (15) are both circular, and the depression section of the main threaded rod (13) and the secondary threaded rod (14) is the same as the diameter of the depression section inner wall of the adapter ring (15).

5. The safety relief valve with good sealing performance according to claim 1, characterized in that: the secondary threaded rod (14) is perpendicular to the axis of the valve body (1), and the main threaded rod (13) is perpendicular to the axis of the valve body (1).

6. The safety relief valve with good sealing performance according to claim 1, characterized in that: rubber buffer (10) all are circular with the side section of valve body (1) inner wall, and rubber buffer (10) are the same with the area of valve body (1) inner wall side section.

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