Dustproof non-closed safety valve

Abstract

The utility model provides a dust-proof non-closed safety valve which comprises a valve body, a valve rod, a valve rod, a valve rod, a valve rod, a valve rod and a valve rod. The valve clack assembly is arranged in the valve body, and one end of the valve clack assembly abuts against the inlet; the valve bonnet is arranged at the other end of the valve body in a sleeving mode, and a discharging channel is formed between the valve bonnet and the valve body; the discharge channel comprises a discharge port which is arranged on the outer peripheral wall of the other end of the valve body; the first channel is arranged in the valve wall of the valve body, extends from the top of the valve wall at the other end of the valve body to the inlet and is communicated with the discharge port; the second channel is arranged on the inner peripheral wall of the valve bonnet and extends from the inner peripheral wall of the valve bonnet to the outer peripheral wall of the valve bonnet, one end of the second channel is communicated with the outlet, and the other end of the second channel is communicated with the first channel. According to the safety valve, the roundabout discharge channel is arranged between the valve body and the valve bonnet, dust is prevented from entering the valve body through the discharge port while discharge is achieved, and the dustproof performance of the safety valve is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of safety valve, in particular to a dustproof non-closed safety valve. BACKGROUND

[0002] Safety valve is widely used in modern manufacturing engineering technology field, and the main function of safety valve is to prevent the explosion or leakage of equipment container due to excessive pressure.

[0003] As safety valve technology is increasingly applied to various industries, the performance of the original traditional safety valve is continuously improved, and it is urgent to develop new safety valve products to meet market requirements. The current commonly used non-closed safety valve has a problem, that is, the non-closed safety valve must have a medium discharge hole. Generally, the medium discharge hole of the non-closed safety valve is at the upper end or side of the valve body. The workshop environment is dusty, and air guns are often used, which causes dust to enter the valve body. After the safety valve is opened, the dust is stuck on the valve disc, causing the safety valve to leak after closing.

[0004] However, in order to ensure the discharge performance of the safety valve, the outlet of the safety valve cannot be increased with filter cotton. CONTENT OF THE INVENTION

[0005] In view of the defects in the prior art, the purpose of the present application is to provide a dustproof non-closed safety valve, which greatly reduces the possibility of dust entering the valve body through a detour downward discharge mode of the medium discharge channel.

[0006] In one aspect of the present application, a dustproof non-closed safety valve is provided, comprising: a valve body, the valve body having a containing cavity inside, one end of the valve body being provided with an inlet communicating with the containing cavity, and the other end being provided with an outlet communicating with the containing cavity;

[0007] A valve disc assembly is arranged in the valve body and abuts against the inlet at one end;

[0008] A valve cap is sleeved on the other end of the valve body, and the valve cap and the valve body have a discharge channel therebetween;

[0009] The discharge channel comprises a discharge port arranged on the outer peripheral wall of the other end of the valve body;

[0010] A first channel is arranged in the valve wall of the valve body and extends from the valve wall top of the other end of the valve body to the inlet, and communicates with the discharge port;

[0011] A second channel is arranged in the inner peripheral wall of the valve cap and extends from the inner peripheral wall of the valve cap to the outer peripheral wall of the valve cap, one end of the second channel communicates with the outlet, and the other end communicates with the first channel.

[0012] Further, a locking screw is arranged in the valve body and protrudes from the outlet.

[0013] The locking screw is provided with a first through hole penetrating from one end to the other end of the locking screw, and the first through hole is communicated with the outlet.

[0014] The locking screw and the valve cap have a cavity, and the cavity is communicated with the second channel.

[0015] Further, the relief channel has a plurality of channels arranged along the circumference between the valve cap and the valve body.

[0016] Further, the relief channel has 6 channels.

[0017] Further, an adjusting screw is arranged in the accommodating cavity.

[0018] The adjusting screw is arranged in the accommodating cavity and is arranged close to the outlet and is screwed with the inner wall of the valve body.

[0019] One end of the adjusting screw is abutted with one end of the locking screw, and the adjusting screw is provided with a second through hole penetrating therethrough, and the second through hole is communicated with the first through hole.

[0020] Further, a spring is arranged in the accommodating cavity, one end of the spring is abutted with the other end of the adjusting screw, and the other end of the spring is abutted with the valve flap assembly.

[0021] The other end of the adjusting screw is provided with a first recess communicated with the second through hole, and the other end of the spring is abutted with the bottom wall of the first recess.

[0022] Further, the valve flap assembly comprises a valve flap and a sealing gasket.

[0023] The sealing gasket is arranged between the valve flap and the inlet, and one end of the sealing gasket is abutted with the inlet.

[0024] The other end of the spring is abutted with one end of the valve flap.

[0025] One end of the valve flap abutted with the spring is provided with a second recess, and the other end of the spring is abutted with the bottom wall of the second recess.

[0026] The bottom of the second recess is provided with a third through hole penetrating the spring support seat.

[0027] One end of the sealing gasket is provided with a second protrusion, and the second protrusion penetrates the third through hole into the second recess.

[0028] Further, the sealing gasket is provided with a first protrusion at one end abutting the inlet, the first protrusion abutting the inlet for opening or closing the inlet.

[0029] Further, the inner diameter of the valve disc is greater than the inner diameter of the accommodating cavity.

[0030] The inner diameter of the second through hole is smaller than the inner diameter of the first through hole.

[0031] Compared with the prior art, the application has at least one of the following beneficial effects:

[0032] 1. The application sets the valve cap sleeve on the valve body, sets the relief passage between the valve body and the valve cap, and communicates the relief passage with the outlet of the valve body, sets the relief opening of the relief passage on the outer peripheral wall of the valve body, and communicates the first passage arranged in the valve wall of the valve body and the second passage on the valve cap in a meandering manner downward, and communicates the second passage with the outlet of the valve body, when the inlet is opened by the valve disc assembly, the dust directly entering the inside of the valve body through the relief opening is effectively reduced, the dustproof performance and operation reliability of the safety valve are improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Other features, objects and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments with reference to the attached drawings:

[0034] Figure 1 It is a sectional view of a dustproof non-closed safety valve according to an embodiment of the application.

[0035] Figure 2 It is a perspective view of a dustproof non-closed safety valve according to an embodiment of the application.

[0036] In the figure: 1, valve body; 11, accommodating cavity; 12, inlet; 13, outlet; 2, valve disc assembly; 21, valve disc; 211, second groove; 212, third through hole; 22, sealing gasket; 221, first protrusion; 222, second protrusion; 3, spring; 4, adjusting screw; 41, second through hole; 42, first groove; 5, locking screw; 51, first through hole; 6, valve cap; 7, relief passage; 71, relief opening; 72, first passage; 73, second passage; 8, cavity. DETAILED DESCRIPTION

[0037] The application will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the application, but do not limit the application in any form. It should be noted that, for those skilled in the art, without departing from the concept of the application, a number of modifications and improvements can be made. These all belong to the protection scope of the application.

[0038] It should be understood that the terms "first", "second" and the like in the following embodiments are used to distinguish different objects, rather than to describe a particular order. The terms "include" and "contain" used indicate the presence of the described features, whole, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, whole, steps, operations, elements, components and / or sets thereof. In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0039] Referring to Figure 1 As shown in the drawings, the dustproof non-closed safety valve of an embodiment of the present application comprises: a valve body 1, the valve body 1 has a containing cavity 11 inside, one end of the valve body 1 is provided with an inlet 12 communicating with the containing cavity 11, and the other end is provided with an outlet 13 communicating with the containing cavity 11; a valve clack assembly 2 is arranged in the valve body 1 and abuts against the inlet 12 at one end; a valve cap 6 is sleeved on the other end of the valve body 1, and the valve cap 6 and the valve body 1 have a discharge channel 7 therebetween; the discharge channel 7 comprises a discharge port 71 arranged on the outer peripheral wall of the other end of the valve body 1; a first channel 72 arranged in the valve wall of the valve body 1 extends from the top of the valve wall of the other end of the valve body 1 to the inlet 12 and communicates with the discharge port 71; and a second channel 73 arranged on the inner peripheral wall of the valve cap 6 extends from the inner peripheral wall of the valve cap 6 to the outer peripheral wall of the valve cap 6, one end of the second channel 73 communicates with the outlet 13, and the other end communicates with the first channel 72.

[0040] The valve cap 6 is sleeved on the valve body 1, the discharge channel 7 is arranged between the valve body 1 and the valve cap 6, the discharge channel 7 communicates with the outlet 13 of the valve body 1, the discharge port 71 of the discharge channel 7 is arranged on the outer peripheral wall of the valve body 1, and the first channel 72 arranged in the valve wall of the valve body 1 and the second channel 73 on the valve cap 6 are communicated in a meandering downward manner, the discharge channel 7 communicates with the outlet 13 of the valve body 1 through the second channel 73, and when the valve clack assembly 2 opens the inlet 12, the possibility of dust directly entering the inside of the valve body 1 through the discharge port 71 is effectively reduced, the dustproof performance and operation reliability of the safety valve are improved, and the discharge of the medium is realized through the discharge channel 7.

[0041] Specifically, in use, when the inlet 12 of the valve body 1 is pressurized to a set value, the valve disc assembly 2 moves away from the inlet 12, and the medium in the valve body 1 can be discharged through the discharge channel 7 between the bonnet 6 and the valve body 1. The medium first passes through the second channel 73 provided on the inner wall of the bonnet 6, and then enters the first channel 72 provided in the valve wall of the valve body 1. Since the first channel 72 is designed to be winding downward, the medium is discharged from the discharge port 71 provided on the outer wall of the valve body 1, effectively preventing dust from entering.

[0042] Specifically, the discharge channel 7 has multiple, circumferentially spaced between the bonnet 6 and the valve body 1.

[0043] Among them, the discharge channel 7 has 6.

[0044] By circumferentially arranging multiple discharge channels 7 between the bonnet 6 and the valve body 1, the discharge efficiency of the safety valve is improved. In this application, the six winding paths of the discharge channel 7 can reduce the possibility of dust entering. Different discharge efficiencies can be achieved by reducing the diameter of the discharge port 71 or increasing the number of discharge ports 71. At the same time, controlling the diameter of the discharge port 71 during production can reduce the possibility of dust entering the interior of the containing cavity 11 of the valve body 1, thereby improving the service life of the safety valve.

[0045] Among them, the end of the bonnet 6 sleeved on the valve body 1 at least partially covers the discharge port 71, further improving the effect of the safety valve resisting dust entering the containing cavity 11.

[0046] In some specific embodiments, a locking screw 5 is further included, one end of which is threadedly connected to the inner wall of the valve body 1, and the other end protrudes out of the outlet 13 of the valve body 1 and is located inside the bonnet 6. The locking screw 5 is provided with a first through hole 51 penetrating from one end to the other end of the locking screw 5, and the first through hole 51 is in communication with the outlet 13. The locking screw 5 and the bonnet 6 have a cavity 8 therebetween, and the cavity 8 is in communication with the second channel 73.

[0047] By arranging the locking screw 5 and the first through hole 51 therein, the containing cavity 11 is in communication with the cavity 8, and one end of the locking screw 5 protrudes out of the outlet 13 of the valve body 1. When discharging, the medium in the containing cavity 11 enters the cavity 8 from the first through hole 51, then flows downward in the cavity 8, then forms a downward winding path through the first channel 72 and the second channel 73, and finally is discharged from the discharge port 71. Without changing the structure, the complexity of the discharge channel 7 path and the difficulty of dust entering the containing cavity 11 are increased.

[0048] In some specific embodiments, the adjusting screw 4 is further included; the adjusting screw 4 is arranged in the accommodating cavity 11, is arranged close to the outlet 13, is threadedly connected with the inner wall of the valve body 1, one end of the adjusting screw 4 abuts against one end of the locking screw 5, the adjusting screw 4 is provided with a second through hole 41 penetrating through the adjusting screw 4, and the second through hole 41 is communicated with the first through hole 51.

[0049] In the embodiment, the adjusting screw 4 is threadedly connected with the inner wall of the valve body 1, and the position of the adjusting screw 4 can be limited through the thread in the valve body 1.

[0050] In the embodiment, the inner diameter of the valve cap 6 is greater than the inner diameter of the accommodating cavity 11, and the inner diameter of the second through hole 41 is less than the inner diameter of the first through hole 51.

[0051] In some specific embodiments, the spring 3 is further included; the spring 3 is arranged in the accommodating cavity 11, one end of the spring 3 abuts against the other end of the adjusting screw 4, and the other end of the spring 3 abuts against the valve disc assembly 2; the other end of the adjusting screw 4 is provided with a first recess 42 communicated with the second through hole 41, and the other end of the spring 3 abuts against the bottom wall of the first recess 42.

[0052] The spring 3 is arranged in the accommodating cavity 11 and abuts against the adjusting screw 4 and the valve disc assembly 2 respectively, the position of the spring 3 is adjusted through the position of the adjusting screw 4, the tension of the spring 3 is changed, and the set pressure of the inlet 12 of the safety valve is adjusted.

[0053] In some specific embodiments, the valve disc assembly 2 includes the valve disc 21 and the sealing gasket 22; the sealing gasket 22 is arranged between the valve disc 21 and the inlet 12, one end of the sealing gasket 22 abuts against the inlet 12; and the other end of the spring 3 abuts against one end of the valve disc 21.

[0054] Specifically, one end of the valve disc 21 abutting against the spring 3 is provided with a second recess 211, and the other end of the spring 3 abuts against the bottom wall of the second recess 211.

[0055] The second recess 211 is arranged at one end of the valve disc 21 abutting against the spring 3, the position of the other end of the spring 3 is limited, and the position of the spring 3 in the accommodating cavity 11 is limited through the first recess 42 and the second recess 211.

[0056] In some specific embodiments, the bottom of the second groove 211 is provided with a third through hole 212 penetrating the valve disc 21; one end of the sealing gasket 22 is provided with a second protrusion 222 penetrating the third through hole 212 into the second groove 211.

[0057] Through the third through hole 212 and the second protrusion 222 at one end of the sealing gasket 22, the sealing gasket 22 is prevented from falling off the valve disc 21 due to thermal expansion and contraction.

[0058] In some specific embodiments, the end of the sealing gasket 22 abutting against the inlet 12 is provided with a first protrusion 221 abutting against the inlet 12 for opening or closing the inlet 12.

[0059] When the safety valve is working, the first protrusion 221 of the sealing gasket 22 opens the inlet 12 when the pressure of the inlet 12 of the valve body 1 rises to a set value, and moves away from the inlet 12, so that the medium enters the containing cavity 11 of the valve body 1 from the inlet 12, and the medium in the valve body 1 can be discharged through the discharge channel 7 between the bonnet 6 and the valve body 1. The medium first enters the cavity 8 from the containing cavity 11, then flows downward to the second channel 73 of the inner wall of the bonnet 6, then enters the first channel 72 in the valve wall of the valve body 1, forms a downward detour path, and finally is discharged from the discharge port 71 of the outer wall of the valve body 1, which not only realizes safe discharge, but also effectively prevents dust from entering.

[0060] The specific embodiments of the application are described above. It should be understood that the application is not limited to the above specific embodiments, and various modifications or changes can be made by those skilled in the art within the scope of the claims, which does not affect the essential content of the application. The above preferred features can be used in combination as long as they do not conflict with each other.

Claims

1. A dust-proof non-closed safety valve, characterized in that, The utility model provides a valve body, the valve body inside has the accommodation cavity, one end of the valve body is equipped with the import with the accommodation cavity intercommunication, the other end is equipped with the export with the accommodation cavity intercommunication, valve clack subassembly is arranged in the valve body, and one end is in butt joint with the import, the valve cap is set in the other end of the valve body, and the valve cap has the blow -off channel with the valve body between, the blow -off channel includes blow -off mouth, sets up in the other end of the valve body's outer wall, first channel is set up in the valve wall of the valve body, from the valve wall top of the other end of the valve body to the import direction extension setting, with blow -off mouth intercommunication, second channel is set up in the inner wall of the valve cap, from the inner wall of the valve cap to the outer wall of the valve cap extension setting, one end of the second channel is in communication with the export, and the other end is in communication with the first channel. Further including locking screw, one end is located in the valve body and is in threaded connection with the inner wall of the valve body, the other end protrudes the export, is located in the valve cap inside, the locking screw is equipped with first through -hole from one end to the other end of the locking screw, and the first through -hole is in communication with the export, the locking screw has the cavity with the valve cap between, and the cavity is in communication with the second channel. The blow -off channel has a plurality of, and is arranged along the circumference between the valve cap and the valve body. The blow -off channel has 6. Further including adjusting screw, the adjusting screw is set up in the accommodation cavity, is close to the export setting, and is in threaded connection with the inner wall of the valve body, one end of the adjusting screw is in butt joint with one end of the locking screw, and the adjusting screw is equipped with second through -hole, and the second through -hole is in communication with the first through -hole. Further including spring, the spring is set up in the accommodation cavity, one end is in butt joint with the other end of the adjusting screw, and the other end is in butt joint with the valve clack subassembly, the other end of the adjusting screw is equipped with first recess, and the other end of the spring is in butt joint with the bottom wall of the first recess. The valve clack subassembly includes valve clack and sealing pad, the sealing pad is set up between the valve clack and the import, and one end is in butt joint with the import, the other end of the spring is in butt joint with one end of the valve clack.

2. A dust-proof non-closed safety valve according to claim 1, characterized in that, One end of the valve clack and the spring butt joint is equipped with second recess, and the other end of the spring is in butt joint with the bottom wall of the second recess, the bottom of the second recess is equipped with third through -hole penetrating the valve clack, one end of the sealing pad is equipped with second protrusion, and the second protrusion passes through the third through -hole to the second recess. One end of the sealing pad and the import butt joint is equipped with first protrusion, and the first protrusion is in butt joint with the import, is used to open or close the import. The inner diameter of the valve cap is greater than the inner diameter of the accommodation cavity, and the inner diameter of the second through -hole is less than the inner diameter of the first through -hole.

3. A dust-proof non-closed safety valve according to claim 2, characterized in that ​ 4. A dust-proof non-closed safety valve according to claim 3, characterized in that ​ 5. A dust-proof non-closed safety valve according to claim 2, characterized in that, ​ ​ ​ 6. A dust-proof non-closed safety valve according to claim 5, characterized in that ​ ​ 7. A dust-proof non-closed safety valve according to claim 6, characterized in that ​ ​ ​ 8. A dust-proof non-closed safety valve according to claim 7, characterized in that ​ ​ ​ 9. A dust-proof non-closed safety valve according to claim 8, characterized in that ​ 10. A dust-proof non-closed safety valve according to claim 5, characterized in that, ​ ​

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