CN214466143U

CN214466143U - Adjustable safety valve

Info

Publication number: CN214466143U
Application number: CN202023043839.3U
Authority: CN
Inventors: 伍开贵; 刘杰; 戚付生; 胡凯
Original assignee: Guangdong Shiqi Manufacturing Co ltd
Current assignee: Guangdong Shiqi Manufacturing Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2021-10-22
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses an adjustable relief valve, including the intake pipe, with intake pipe threaded connection's outlet duct, the holding has the valve clack in the intake pipe, the outlet duct is connected with the elastic component, the other end of elastic component with the valve clack butt, the elastic component orders about valve clack extrusion intake pipe is with the shutoff the intake pipe. The threshold value is adjustable, and the structure is compact and simple, thereby reducing the production cost.

Description

Adjustable safety valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to adjustable relief valve.

Background

The safety valve is a protective device for automatic pressure relief, and is a safety device arranged for preventing explosion phenomenon caused by overhigh pressure of equipment or a container under abnormal conditions.

However, the safety threshold of most safety valves at present is a fixed value, cannot be adjusted by self, and has a small application range and certain limitation; meanwhile, the existing safety valve is complex in structure and high in production cost.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide an adjustable safety valve, its threshold value is adjustable, and the structure is comparatively compact, simple to manufacturing cost has been reduced.

The purpose of the utility model is realized by adopting the following technical scheme:

the adjustable safety valve comprises a valve body and a valve clack accommodated in the valve body, wherein the valve body comprises an air inlet pipe and an air outlet pipe in threaded connection with the air inlet pipe, the air outlet pipe is connected with an elastic piece, the other end of the elastic piece is abutted to the valve clack, and the elastic piece drives the valve clack to extrude the air inlet pipe to block the air inlet pipe.

Furthermore, an air inlet cavity and a connecting cavity communicated with the air inlet cavity are arranged in the air inlet pipe, the connecting cavity is closer to the air outlet pipe than the air inlet cavity, the valve clack is contained in the connecting cavity, and a part or all of the elastic piece is contained in the connecting cavity.

Furthermore, the caliber of the air inlet cavity is smaller than that of the connecting cavity, and the outline of the valve flap is larger than that of the air inlet cavity.

Further, the valve clack is of a sphere structure, and the diameter of the sphere is larger than the caliber of the air inlet cavity.

Furthermore, the air outlet pipe is provided with a mounting cavity and an air outlet cavity communicated with the mounting cavity, the mounting cavity is closer to the air inlet pipe than the air outlet cavity, and the air inlet cavity, the connecting cavity, the mounting cavity and the air outlet cavity are communicated in sequence; one of the connecting cavity and the mounting cavity is accommodated in the other, and a part or the whole of the elastic piece is accommodated in the mounting cavity.

Furthermore, the caliber of the installation cavity is larger than that of the air outlet cavity, so that a step is formed at the joint of the installation cavity and the air outlet cavity, and the elastic part is abutted to the step of the air outlet pipe.

Further, a part of the elastic piece is accommodated in the installation cavity, and the part of the elastic piece accommodated in the installation cavity occupies more than one third of the total length of the elastic piece.

Further, one of the air inlet pipe and the air outlet pipe is provided with a scale mark, and the scale mark is used for displaying the current threshold value.

Furthermore, the inside of the end, far away from the air inlet pipe, of the air outlet pipe is filled with a silencing piece.

Furthermore, the noise reduction piece is made of one of a PE sintered body, an acrylic pen point and a fiber pen point.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. when the threshold value of the safety valve needs to be adjusted, the air inlet pipe is in threaded connection with the air outlet pipe, so that the air outlet pipe is rotated, the air inlet pipe and the air outlet pipe are relatively far away or relatively close to each other under the condition of threaded rotation, the elastic force of the elastic part is changed, and the threshold value of the safety valve is changed.

2. And, realized under the prerequisite that the threshold value is adjustable, only increased the helicitic texture, and spare part mainly includes valve clack and elastic component in the valve body, namely make this relief valve structure comparatively compact, simple to manufacturing cost has been reduced.

Drawings

Fig. 1 is a schematic structural view of an adjustable safety valve of the present invention;

fig. 2 is a diagram illustrating the effect of the adjustable safety valve shown in fig. 1 connected to an airbag, wherein arrows indicate the flow direction of gas when the safety valve is deflated.

In the figure: 1. an air inlet pipe; 11. an air inlet cavity; 12. a connecting cavity; 13. an internal thread; 2. an air outlet pipe; 21. a mounting cavity; 22. an air outlet cavity; 23. a step; 24. scale marks; 25. an external thread; 3. a valve flap; 4. an elastic member; 5. a noise reducing member; 6. an air bag; 7. and (5) sealing rings.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used herein, "vertical," "horizontal," "left," "right," and similar expressions are for purposes of illustration only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Fig. 1-2 show the adjustable relief valve of a preferred embodiment of the utility model, including valve body and the valve clack 3 of holding in the valve body, the valve body includes intake pipe 1, with 1 threaded connection's of intake pipe outlet duct 2, outlet duct 2 is connected with elastic component 4, elastic component 4's the other end and 3 butts of valve clack, and elastic component 4 orders about valve clack 3 extrusion intake pipe 1 with shutoff intake pipe 1. The fluid takes gas as an example, see fig. 2, when the air pressure in the airbag 6 is too high and needs to discharge a part of gas in time, under the action of high air pressure, the valve flap 3 overcomes the extrusion force of the elastic part 4 to drive the elastic part 4 to compress, the blocking of the valve flap 3 to the air inlet pipe 1 is removed, namely, the air inlet pipe 1 is communicated with the air outlet pipe 2, so that part of gas in the airbag 6 is discharged along the air inlet pipe 1 and the air outlet pipe 2 in sequence, when the action force of the air pressure in the airbag 6 to the valve flap 3 is smaller than the extrusion force of the elastic part 4 to the valve flap 3, the elastic part 4 drives the valve flap 3 to reset to block the air inlet pipe 1, so that the air inlet pipe 1 is in a normally closed state and needs to be opened passively when the airbag 6 is under high pressure. It should be noted that, when the threshold value of the safety valve needs to be adjusted, because the air inlet pipe 1 is connected with the air outlet pipe 2 in a threaded manner, the air outlet pipe 2 is rotated, so that the air inlet pipe 1 and the air outlet pipe 2 are relatively far away from or relatively close to each other under the condition of threaded rotation, and the elastic force of the elastic member 4 is changed, that is, the threshold value of the safety valve is changed. And, realized under the prerequisite that the threshold value is adjustable, only increased the helicitic texture, and spare part mainly includes valve clack 3 and elastic component 4 in the valve body, namely make this relief valve structure comparatively compact, simple to manufacturing cost has been reduced, and application scope is wide.

The elastic element 4 is preferably a spring, and obviously, the elastic element 4 may also be an elastomer made of rubber, etc.

As a further preferred embodiment: the air inlet pipe 1 is internally provided with an air inlet cavity 11 and a connecting cavity 12 communicated with the air inlet cavity 11, the connecting cavity 12 is closer to the air outlet pipe 2 than the air inlet cavity 11, the valve clack 3 is accommodated in the connecting cavity 12, and part or all of the elastic piece 4 is accommodated in the connecting cavity 12. By means of the arrangement, the valve clack 3 can reliably block the air inlet pipe 1 as far as possible. It is understood that, referring to fig. 1, as the inlet pipe 1 and the outlet pipe 2 are screwed and moved away from each other, a portion of the elastic member 4 may be exposed to the outside of the connection chamber 12 (but inside the outlet pipe 2); on the contrary, as the inlet pipe 1 and the outlet pipe 2 are screwed and brought close to each other, the whole of the elastic member 4 may be accommodated in the connection chamber 12. As an alternative embodiment, if the air inlet pipe 1 is only provided with the air inlet cavity 11 and the connection cavity 12 is abandoned, the valve flap 3 is only abutted to the end of the air inlet pipe 1, at this time, in order to satisfy the threaded connection relationship, the air outlet pipe 2 needs to be sleeved outside the air inlet pipe 1 and in threaded connection with the air inlet pipe 1, and the valve flap 3 and the elastic piece 4 need to be accommodated in the air outlet pipe 2.

As a further preferred embodiment: the caliber of the air inlet cavity 11 is smaller than that of the connecting cavity 12, the outline of the valve flap 3 is larger than that of the air inlet cavity 11, so that the air inlet cavity 11 can be blocked when the valve flap 3 is accommodated in the connecting cavity 12, and the blocking mode is relatively reliable. Preferably, the valve flap 3 is a sphere structure, and the diameter of the sphere is larger than the caliber of the air inlet cavity 11. As an alternative embodiment, the size relationship between the apertures of the intake chamber 11 and the connection chamber 12 may not be limited, but only the chamber wall of the connection chamber 12 is recessed from the inside to the outside along the radial direction to form a limiting groove, the limiting groove extends along the axial direction of the intake pipe 1, and the valve flap 3 is provided with a limiting block slidably fitted with the limiting groove, when the limiting block abuts against the end of the limiting groove (i.e., the valve flap 3 is pressed by the elastic member 4), the valve flap 3 is accommodated in the connection chamber 12 and blocks the connection chamber 12, thereby blocking the communication between the intake chamber 11 and the outlet pipe 2.

As a further preferred embodiment: the air outlet pipe 2 is provided with a mounting cavity 21 and an air outlet cavity 22 communicated with the mounting cavity 21, the mounting cavity 21 is closer to the air inlet pipe 1 than the air outlet cavity 22, and the air inlet cavity 11, the connecting cavity 12, the mounting cavity 21 and the air outlet cavity 22 are communicated in sequence; one of the connecting cavity 12 and the mounting cavity 21 is accommodated in the other, and a part or the whole of the elastic member 4 is accommodated in the mounting cavity 21. It should be noted that the elastic element 4 may be accommodated not only in the mounting cavity 21, but also in the connecting cavity 12, for example: when the mounting cavity 21 is completely accommodated in the connecting cavity 12, and the elastic element 4 is completely accommodated in the mounting cavity 21, the elastic element 4 is also completely accommodated in the connecting cavity 12. However, in the present embodiment, in fig. 1, it is preferable that a portion of the elastic member 4 is accommodated in the mounting chamber 21, and a portion of the elastic member 4 may move out of the connection chamber 12 as the screw between the outlet tube 2 and the inlet tube 1 is adjusted.

As a further preferred embodiment: the bore of installation cavity 21 is greater than the bore of play gas cavity 22 to make the junction of installation cavity 21 and play gas cavity 22 form step 23, elastic component 4 and the step 23 butt of outlet duct 2, in order to guarantee that elastic component 4 is installed reliably on outlet duct 2. In order to further improve the reliable limit of the outlet pipe 2 to the elastic element 4, a part of the elastic element 4 is accommodated in the installation cavity 21, a part of the elastic element 4 is positioned outside the installation cavity 21 so as to be capable of reliably pressing the valve flap 3, and the part of the elastic element 4 accommodated in the installation cavity 21 occupies more than one third of the total length of the elastic element 4.

As a further preferred embodiment: one of the air inlet pipe 1 and the air outlet pipe 2 is provided with a scale mark 24, and the scale mark 24 is used for displaying the current threshold value. Obviously, when the air outlet pipe 2 is sleeved outside the air inlet pipe 1, the scale mark 24 should be arranged on the outer wall of the air inlet pipe 1; in this embodiment, referring to fig. 1, the air inlet pipe 1 is sleeved outside the air outlet pipe 2 (i.e. the air inlet pipe 1 is provided with an internal thread 13, the air outlet pipe 2 is provided with an external thread 25, and the internal thread 13 is in threaded connection with the external thread 25), so that the scale mark 24 is arranged on the outer wall of the air outlet pipe 2, and when the corresponding scale mark 24 is level with the end surface of the air inlet pipe 1, it represents the threshold value of the safety valve at this time.

As a further preferred embodiment: the inside of the one end of outlet duct 2, far away from inlet duct 1, is filled with amortization piece 5 to carry out the amortization to the combustion gas, prevent that the noise is too big. Furthermore, the noise reduction piece 5 is made of one of a PE sintered body, an acrylic pen point and a fiber pen point.

As a further preferred embodiment: the outer wall of the air inlet pipe 1 is sleeved with a sealing ring 7 and is connected with the air bag 6 in a sealing mode through the sealing ring 7.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. Adjustable relief valve, its characterized in that: including valve body and the valve clack of holding in the valve body, the valve body include the intake pipe, with intake pipe threaded connection's outlet duct, the outlet duct is connected with the elastic component, the other end of elastic component with the valve clack butt, the elastic component orders about valve clack extrusion intake pipe is with the shutoff the intake pipe.

2. The adjustable safety valve of claim 1, wherein: the valve is characterized in that an air inlet cavity and a connecting cavity communicated with the air inlet cavity are arranged in the air inlet pipe, the connecting cavity is closer to the air outlet pipe than the air inlet cavity, the valve clack is contained in the connecting cavity, and a part or all of the elastic piece is contained in the connecting cavity.

3. The adjustable safety valve of claim 2, wherein: the caliber of the air inlet cavity is smaller than that of the connecting cavity, and the outline of the valve clack is larger than that of the air inlet cavity.

4. The adjustable safety valve of claim 3, wherein: the valve clack is of a sphere structure, and the diameter of the sphere is larger than the caliber of the air inlet cavity.

5. The adjustable safety valve of claim 2, wherein: the air outlet pipe is provided with an installation cavity and an air outlet cavity communicated with the installation cavity, the installation cavity is closer to the air inlet pipe than the air outlet cavity, and the air inlet cavity, the connection cavity, the installation cavity and the air outlet cavity are communicated in sequence; one of the connecting cavity and the mounting cavity is accommodated in the other, and a part or the whole of the elastic piece is accommodated in the mounting cavity.

6. The adjustable safety valve of claim 5, wherein: the caliber of the mounting cavity is larger than that of the air outlet cavity, so that a step is formed at the joint of the mounting cavity and the air outlet cavity, and the elastic part is abutted to the step of the air outlet pipe.

7. The adjustable safety valve of claim 5, wherein: a part of the elastic piece is accommodated in the installation cavity, and the part of the elastic piece accommodated in the installation cavity occupies more than one third of the total length of the elastic piece.

8. The adjustable safety valve of claim 1, wherein: one of the air inlet pipe and the air outlet pipe is provided with a scale mark, and the scale mark is used for displaying the current threshold value.

9. The adjustable safety valve of claim 1, wherein: the inside of the one end of outlet duct far away from the intake pipe is filled with amortization piece.

10. The adjustable safety valve of claim 9, wherein: the noise reduction piece is made of one of a PE sintered body, an acrylic pen point and a fiber pen point.