CN211574344U

CN211574344U - Gas safety relief valve

Info

Publication number: CN211574344U
Application number: CN201921728924.8U
Authority: CN
Inventors: 梁庚寅; 苏龙
Original assignee: Guotaitong Energy Equipment Co ltd
Current assignee: Guotaitong Energy Equipment Group Co.,Ltd.
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2020-09-25
Anticipated expiration: 2029-10-16

Abstract

The utility model discloses a gas safety bleeding valve in the bleeding valve technical field, which comprises an adjusting nut, an adjusting spring, a diaphragm gland nut, a tray, a diaphragm, an upper shell gland screw, a lower shell, a valve port sealing gasket, a valve port, a valve pad and a central shaft, wherein the outer wall of the central shaft is sequentially sleeved with a connecting piece, a valve port sealing gasket, a valve pad, a diaphragm, a tray and a diaphragm gland nut from left to right, the diaphragm gland nut is sleeved on the outer wall of the central shaft by screw threads, the circumferential outer wall of the diaphragm is jointed with the circumferential inner wall of the valve port, the circumferential outer wall of the diaphragm extends to the inner side of the joint of the upper shell and the lower shell, a positioning slider is additionally arranged at the outlet position of the bleeding valve, and the central shaft of the valve pad pressing piece is lengthened, so that the central shaft is positioned at the central position of the positioning slider for a long time, thereby also having solved the gas safety relief valve and closed again after the start-up untight, factors such as the pressure of bleeding is unstable.

Description

Gas safety relief valve

Technical Field

The utility model relates to a diffuse valve technical field specifically is gas safety diffuse valve.

Background

The valve pad location that traditional gas safety bleeding valve adopted only relies on the involucra to guarantee that the valve pad can not deviate from the center, but often reaches the pressure valve mouth pad of bleeding at gas safety bleeding valve and opens when leaning on adjusting spring self-closing with the valve port, can take place the valve port and fill up the skew central point because the atmospheric pressure effect causes the valve port to fill up to put because of the atmospheric pressure to cause gas safety bleeding valve to close not tightly, the pressure of bleeding is unstable, wait the factor for this reason, we propose gas safety bleeding valve.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a gas safety relief valve to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the gas safety relief valve comprises an adjusting nut, an adjusting spring, a diaphragm compression nut, a tray, a diaphragm, upper and lower casing compression screws, an upper casing, a lower casing, a valve port sealing gasket, a valve port, a valve pad and a central shaft, wherein the valve port is arranged on the outer wall of the left side of the lower casing, the right end of the valve port extends to the inner cavity of the lower casing, the periphery of the joint of the upper casing and the lower casing is provided with convex edges, screw holes are arranged on the outer wall of one side opposite to the two groups of convex edges, the upper and lower casing compression screws are positioned in the screw holes, the upper casing is provided with the adjusting nut towards the right end of the inner wall in a ring shape, the adjusting spring is arranged on the left side of the adjusting nut, the left end of the adjusting spring is connected with the outer wall of the right side of the tray, the outer wall of the central shaft is sequentially sleeved with a connecting piece, the valve port sealing gasket, the left outer wall of the valve port sealing gasket is attached to the right end of the valve port, the connecting piece is located in the inner cavity of the valve port and comprises a sleeve pipe fixedly sleeved on the outer wall of a central shaft, three groups of connecting rods are arranged on the annular array of the outer wall of the sleeve pipe, one end, back to the back, of each connecting rod is fixedly connected with a positioning slider, the annular outer wall of each positioning slider is attached to the annular inner wall of the valve port, and the annular outer wall of the diaphragm extends to the inner side of the.

Further, the outer wall of the valve pad is sleeved with a valve pad shell, the outer wall of the right side of the valve pad shell is attached to the left end of the diaphragm, and the diameter of the valve pad shell is equal to the outer diameter of the valve port.

Furthermore, the diaphragm ring extends to the inner side of the joint of the upper shell and the lower shell by two to three centimeters towards the outer wall.

Further, the outer diameter of the adjusting spring is two thirds of the inner diameter of the right end of the upper shell.

Furthermore, an inner hexagonal operation hole is formed in the right end face of the adjusting nut.

Further, the diameter of the tray is larger than the outer diameter of the valve port.

Compared with the prior art, the beneficial effects of the utility model are that: install the location slider additional in diffusion valve exit position to the center pin that the extension valve pad compressed tightly the piece makes the center pin be in location slider central point for a long time and puts, thereby guarantees the valve pad and when automatic re-setting after the diffusion starts, the phenomenon of skew center can not appear, thereby has also solved gas safety diffusion valve and has started the back and close again not tight, factor such as diffusion pressure unstability.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the connection between the central shaft and the sleeve of the present invention.

In the figure: 1. adjusting the nut; 2. adjusting the spring; 3. a diaphragm compression nut; 4. a tray; 5. a membrane; 6. the upper and lower shell compression screws; 7. an upper shell; 8. a lower case; 9. a valve gasket housing; 10. a valve port gasket; 11. a valve port; 12. positioning the sliding block; 13. a connecting member; 14. a valve pad; 15. a central shaft; 16. a sleeve; 17. a connecting rod.

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.

The utility model provides a technical scheme: a gas safety relief valve, please refer to fig. 1-2, comprising an adjusting nut 1, an adjusting spring 2, a diaphragm gland nut 3, a tray 4, a diaphragm 5, upper and lower casing gland screws 6, an upper casing 7, a lower casing 8, a valve port gasket 10, a valve port 11, a valve pad 14 and a central shaft 15, wherein the valve port 11 is arranged on the outer wall of the left side of the lower casing 8, the right end of the valve port 11 extends to the inner cavity of the lower casing 8, the periphery of the joint of the upper casing 7 and the lower casing 8 is provided with a convex edge, the outer walls of the opposite sides of the two groups of convex edges are provided with screw holes, the upper and lower casing gland screws 6 are positioned in the screw holes, the adjusting nut 1 is arranged on the right end of the inner wall of the upper casing 7 ring, the adjusting spring 2 is arranged on the left side of the adjusting nut 1, the left end of the adjusting spring 2 is connected with the outer wall of the right, the diaphragm gland nut 3 is sleeved on the outer wall of a central shaft 15 in a threaded manner, the left end of the diaphragm gland nut 3 is attached to the outer wall of the right side of a tray 4, the outer wall of the left side of a valve port sealing gasket 10 is attached to the right end of a valve port 11, a connecting piece 13 is positioned in the inner cavity of the valve port 11, the left end of the central shaft 15 is positioned on the left side of the connecting piece 13, the central shaft is positioned at the central position of a positioning slide block for a long time by lengthening the central shaft of a valve pad pressing piece, so that the valve pad is ensured not to deviate from the center when automatically resetting after the valve pad is started after being released, the connecting piece 13 comprises a sleeve 16 fixedly sleeved on the outer wall of the central shaft 15, the outer wall of the sleeve 16 is provided with three groups of connecting rods 17 in an annular array manner, gaps are left between the three, the circumferential outer wall of the diaphragm 5 extends to the inner side of the joint of the upper shell 7 and the lower shell 8, and the positioning slide block 12 starts the positioning action, so that the valve pad 14 cannot deviate from the central position, and the tightness of closing and the pressure during secondary opening cannot be changed;

referring to fig. 1, a valve pad shell 9 is sleeved on the outer wall of a valve pad 14, the outer wall of the right side of the valve pad shell 9 is attached to the left end of a diaphragm 5, the diameter of the valve pad shell 9 is equal to the outer diameter of a valve port 11, the contact area between the valve pad 14 and the diaphragm 5 is increased, the acting force of the valve pad 14 on the diaphragm 5 can be dispersed, and the diaphragm 5 is prevented from being broken;

referring to fig. 1, the ring of the diaphragm 5 extends to the inner side of the joint of the upper shell 7 and the lower shell 8 by two to three centimeters, so as to improve the fixing effect of the diaphragm 5;

referring to fig. 1, the outer diameter of the adjusting spring 2 is two thirds of the inner diameter of the right end of the upper shell 7, so that the gap between the adjusting spring 2 and the upper shell 7 is increased, and the adjusting spring does not rub against the inner wall of the upper shell 7 when the adjusting spring 2 is compressed and adjusted;

referring to fig. 1, an inner hexagonal operation hole is formed in the right end face of an adjusting nut 1, so that a wrench can be conveniently inserted for operation;

referring to fig. 1, the diameter of the tray 4 is larger than the outer diameter of the valve port 11, so that the contact area between the tray 4 and the diaphragm 5 is increased, the acting force of the tray 4 on the diaphragm 5 can be dispersed, and the diaphragm 5 can be prevented from being broken.

Example (b): the adjusting nut 1 presses the adjusting spring 2 downwards (the left side is lower, the right side is upper), the adjusting spring 2 presses the valve pad 14 downwards, the valve pad 14 is combined with the valve port 11 to be in a closed state, when the pressure under the diaphragm is greater than the downward acting force of the adjusting spring 2, the diaphragm (namely the diaphragm 5) drives the valve pad 14 and the connecting piece 13 to move upwards, the valve pad 14 and the valve port 11 are separated (namely the valve port is opened), gas under the diaphragm is discharged outwards from a gap between the valve pad 14 and the valve port 11, when the downward force of the diaphragm is smaller than the downward acting force of the spring, the valve pad 14 moves downwards to a closed position, and due to the fact that the positioning slide block 12 is arranged behind the valve pad 14, the valve pad 14 is prevented from deviating from a central position, and the tightness of closing and the pressure during secondary opening are.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Gas safety relief valve, including adjusting nut (1), adjusting spring (2), diaphragm gland nut (3), tray (4), diaphragm (5), upper and lower shell gland screw (6), epitheca (7), inferior valve (8), valve port sealed pad (10), valve port (11), valve pad (14) and center axle (15), its characterized in that: the valve port (11) is arranged on the outer wall of the left side of the lower shell (8), the right end of the valve port (11) extends to the inner cavity of the lower shell (8), the periphery of the joint of the upper shell (7) and the lower shell (8) is provided with convex edges, the outer walls of two groups of convex edges on the opposite sides are provided with screw holes, the upper and lower shell compression screws (6) are positioned in the screw holes, the right end of the circumferential inner wall of the upper shell (7) is provided with an adjusting nut (1), the adjusting spring (2) is arranged on the left side of the adjusting nut (1), the left end of the adjusting spring (2) is connected with the outer wall of the right side of the tray (4), the outer wall of the central shaft (15) is sequentially sleeved with a connecting piece (13), a valve port sealing gasket (10), a valve gasket (14), a diaphragm (5), the tray (4) and a diaphragm compression nut (3), threads of the diaphragm compression nut (3) are sleeved on the outer wall of the central, the left outer wall of the valve port sealing gasket (10) is attached to the right end of the valve port (11), the connecting piece (13) is located in the inner cavity of the valve port (11), the connecting piece (13) comprises a sleeve (16) fixedly sleeved on the outer wall of a central shaft (15), three groups of connecting rods (17) are arranged on the outer wall of the sleeve (16) in an annular array mode, one end, back to the other, of each group of connecting rods (17) is fixedly connected with a positioning slider (12), the annular outer wall of each positioning slider (12) is attached to the annular inner wall of the valve port (11), and the annular outer wall of the diaphragm (5) extends to the inner side of the joint of the.

2. The gas safety relief valve according to claim 1, characterized in that: the outer wall of the valve pad (14) is sleeved with a valve pad shell (9), the outer wall of the right side of the valve pad shell (9) is attached to the left end of the diaphragm (5), and the diameter of the valve pad shell (9) is equal to the outer diameter of the valve port (11).

3. The gas safety relief valve according to claim 1, characterized in that: the diaphragm (5) extends to the inner side of the joint of the upper shell (7) and the lower shell (8) by two to three centimeters towards the outer wall.

4. The gas safety relief valve according to claim 1, characterized in that: the outer diameter of the adjusting spring (2) is two thirds of the inner diameter of the right end of the upper shell (7).

5. The gas safety relief valve according to claim 1, characterized in that: the right end face of the adjusting nut (1) is provided with an inner hexagonal operation hole.

6. The gas safety relief valve according to claim 1, characterized in that: the diameter of the tray (4) is larger than the outer diameter of the valve port (11).