CN203322414U - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN203322414U CN203322414U CN2013203139943U CN201320313994U CN203322414U CN 203322414 U CN203322414 U CN 203322414U CN 2013203139943 U CN2013203139943 U CN 2013203139943U CN 201320313994 U CN201320313994 U CN 201320313994U CN 203322414 U CN203322414 U CN 203322414U
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- closure member
- safety valve
- valve
- valve body
- joint
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Abstract
The utility model discloses a safety valve comprising a valve body, a closing member and a weight. Specifically, the valve body is provided with a passage. The closing member is disposed on the valve body in such manner that the closing member is capable of moving between a position, opening the passage, and another position, closing the passage. The opening position locates above the closing position. The weight is connected with the closing member and allows the closing member to have the force constantly to move toward the closing position. The safety valve is simple in structure, stable in opening pressure, less prone to fatigue in long-term use, convenient to use, and safe and reliable, and is widely applicable to controlling system safety pressure in a gas path system.
Description
Technical field
The utility model relates to pressure facility manufacturing technology field, particularly a kind of safety valve.
Background technique
The most safety valve is all to adopt spring force to withstand spool to seal valve port, when gas pressure during higher than spring force, spring is compressed, safety valve is opened and is realized exhaust, this safety valve is with the movement of spool, and amount of spring compression increases, and the power of spring action on spool is also along with increase, this opens rapidly safety valve is disadvantageous, and the safety pressure value can be subject to flow effect larger.Direct spring loaded safety valve generally all can be subject to the impact of frictional force, and to maintain the stable of safety pressure value, requirement on machining accuracy to the performance requirements such as the material of spring, fatigue and correlated parts is higher, virtually can increase cost, and the stability of general spring formula safety valve is not fine.Current gravity force type safety valve because can there be larger frictional force in spool in the opening and closing process, therefore can affect the stability of valve, want to reduce friction, just must improve the requirement on machining accuracy of part, thereby improve the cost of product.
The model utility content
The utility model one of is intended to solve the problems of the technologies described above at least to a certain extent or at least provides a kind of useful business to select.For this reason, a purpose of the present utility model is to propose the stable and safe and reliable safety valve of a kind of simple in structure, cracking pressure.
According to safety valve of the present utility model, comprising: valve body, closure member and gravity block.Particularly, there is passage in described valve body; Described closure member is at the open position of opening described passage and close between the closed position of described passage and be located at movably on described valve body, and described open position is positioned at the top of described closed position; Described gravity block is connected with described closure member for making described closure member often have the power moved to described closed position.
According to safety valve of the present utility model, adopt gravity to overcome under closure member the active force that gas pressure produces, when under closure member, gas pressure is higher than the gravity of gravity block, the closure member of safety valve is opened and is realized exhaust, and, along with closure member is opened, the pressure of gas remains unchanged substantially.In addition, safety valve is not affected by frictional force basically in the opening and closing process, has improved speed of response and the stability of safety valve.Safety valve of the present utility model has whole technical performances and the index of Direct spring loaded safety valve, and it is simple in structure, cracking pressure is stable, use for a long time indefatigability, easy to use, safe and reliable, can be widely used in the safety pressure of control system in air-channel system.
In addition, the above-mentioned safety valve according to the utility model can also have following additional technical characteristics:
Be formed with stepped part in described passage, be pressed at the described closure member of described closed position on the horizontal stand terrace of described stepped part.Thus, make the simple in structure of passage, facilitate the moulding of valve body, and be convenient to the closure member closing passage, improved the stability of safety valve.In addition, be convenient to the assembling of safety valve, improved the efficiency of assembling of safety valve.
The horizontal stand terrace of described stepped part is provided with annular boss, at the described closure member of described closed position, is pressed on described annular boss.Thus, be convenient to further the closure member closing passage, make safety valve stable, avoid safety valve gas leakage.
Described closure member comprises main body portion and joint, and the first end of described joint is connected with described main body portion, and the second end of described joint is connected with described valve body, and described gravity block is located on the upper surface of described main body portion.In addition, adopting be arranged on valve body on stable by joint of main body portion, make the movement that main body portion can be stable along the vertical direction, can also be stable being located on closure member of gravity block, has improved the stability of safety valve.
The top of described main body portion is provided with for holding the draw-in groove of described gravity block, and described gravity block removably is held in described draw-in groove.Thus, gravity block stably is located on closure member, improved the stability of safety valve, and gravity block is detachable, under different working environments, different gravity blocks can be set, improved the Applicable scope of safety valve.
Described joint is arc, and described joint often has the power of the described main body portion of downward promotion.Thus, improve the stability in the main body portion moving process, made stable the moving of closure member between open position and closed position, improved further the stability of safety valve.And the elastic reaction of the joint of arc can increase the power to the main body portion downward direction, improved the Applicable scope of safety valve.
Also comprise valve gap, described valve gap lid is located on described valve body and described valve gap coordinates with described valve body for compressing the second end of described joint.Thus, be convenient to the installation of closure member, improved the installation efficiency of closure member, save time.
The center of described valve gap is provided with through hole.Thus, make gas fast by safety valve, be convenient to quick pressure releasing, improved Safety performance.
Described valve gap and described valve body are connected by screw.Thus, be convenient to being connected of valve gap and valve body, improved the efficiency of assembling of safety valve.
Described closure member is integrally formed.Thus, make the simple in structure of closure member, not only improved the shaping efficiency of closure member, but also reduced the cost of closure member.And integrally formed closure member has higher structural strength, improved the working life of closure member.
Additional aspect of the present utility model and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
The accompanying drawing explanation
Above-mentioned and/or additional aspect of the present utility model and advantage are from obviously and easily understanding becoming embodiment's description in conjunction with following accompanying drawing, wherein:
Fig. 1 is the sectional view of an embodiment's of the present utility model safety valve;
Fig. 2 is the sectional view of an embodiment's of the present utility model safety valve.
Embodiment
Below describe embodiment of the present utility model in detail, described embodiment's example is shown in the drawings, and wherein same or similar label means same or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment who is described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In description of the present utility model, it will be appreciated that, term " " center ", " vertically ", " laterally ", " length ", " width ", " thickness ", " on ", D score, " front ", " afterwards ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", orientation or the position relationship of indications such as " counterclockwise " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as restriction of the present utility model.
In addition, term " first ", " second " be only for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characteristics.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the present utility model, the implication of " a plurality of " is two or more, unless otherwise expressly limited specifically.
In the utility model, unless otherwise clearly defined and limited, broad understanding should be done in the terms such as term " installation ", " being connected ", " connection ", " fixing ", for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also to be electrically connected to; Can be directly to be connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
In the utility model, unless otherwise clearly defined and limited, First Characteristic Second Characteristic it " on " or D score can comprise that the first and second features directly contact, also can comprise that the first and second features are not directly contacts but by the other feature contact between them.And, First Characteristic Second Characteristic " on ", " top " and " above " comprise First Characteristic directly over Second Characteristic and oblique upper, or only mean that the First Characteristic level height is higher than Second Characteristic.First Characteristic Second Characteristic " under ", " below " and " below " comprise First Characteristic under Second Characteristic and tiltedly, or only mean that the First Characteristic level height is less than Second Characteristic.
The most safety valve is all to adopt spring force to withstand spool to seal valve port, when gas pressure during higher than spring force, spring is compressed, safety valve is opened and is realized exhaust, this safety valve is with the movement of spool, and amount of spring compression increases, and the power of spring action on spool is also along with increase, this opens rapidly safety valve is disadvantageous, and the safety pressure value can be subject to flow effect larger.Direct spring loaded safety valve generally all can be subject to the impact of frictional force, and to maintain the stable of safety pressure value, requirement on machining accuracy to the performance requirements such as the material of spring, fatigue and correlated parts is higher, virtually can increase cost, and the stability of general spring formula safety valve is not fine.Current gravity force type safety valve because can there be larger frictional force in spool in the opening and closing process, therefore can affect the stability of valve, want to reduce friction, just must improve the requirement on machining accuracy of part, thereby improve the cost of product.For this reason, the utility model proposes a kind of novel safety valve.
Describe with reference to the accompanying drawings the utility model embodiment's safety valve in detail.
As depicted in figs. 1 and 2, the safety valve according to the utility model embodiment comprises: valve body 10, closure member 20 and gravity block 30.
Particularly, have path 10 1 in valve body 10, closure member 20 is located at movably on valve body 10 between the closed position of the open position of opening path 10 1 and closing passage 101, and described open position is positioned at the top of described closed position.Gravity block 30 is connected with closure member 20 for making closure member 20 often be subject to the power moved to described closed position.In other words, path 10 1 has suction port 102 and air outlet 103, closure member 20 is located at along the vertical direction movably on valve body 10, under the Action of Gravity Field of gravity block 30, closure member 20 is often in described closed position, as shown in Figure 1, closure member 20 closing passages 101, avoid gas 103 discharges from air outlet in inlet passage 101; When the pressure of the gas of inlet passage 101 is greater than predetermined value, air pressure promotes gravity block 30 and closure member 20, makes closure member 20 be positioned at open position, as shown in Figure 2, closure member 20 is opened passage, gas is discharged, to reduce air pressure from the air outlet 103 of path 10 1.
Safety valve according to the utility model embodiment, adopt gravity to overcome the active force that 20 times gas pressures of closure member produce, when 20 times gas pressures of closure member during higher than the gravity of gravity block 30, the closure member 20 of safety valve is opened and is realized exhaust, and, along with closure member 20 is opened, the pressure of gas remains unchanged substantially.In addition, safety valve is not affected by frictional force basically in the opening and closing process, has improved speed of response and the stability of safety valve.Safety valve of the present utility model has whole technical performances and the index of Direct spring loaded safety valve, and it is simple in structure, cracking pressure is stable, use for a long time indefatigability, easy to use, safe and reliable, can be widely used in the safety pressure of control system in air-channel system.
As depicted in figs. 1 and 2, in embodiments more of the present utility model, be formed with the stepped part (not shown) in path 10 1, be pressed at described closed position closure member 20 on the horizontal stand terrace 104 of described stepped part.In other words, the size on the top of path 10 1 is greater than the size of the bottom of path 10 1, is formed with the horizontal stand terrace between the upper and lower of path 10 1, and closure member 20 can be pressed on the horizontal stand terrace 104 of stepped part, for closing passage 101.Thus, make the simple in structure of path 10 1, facilitate the moulding of valve body 10, and be convenient to closure member 20 closing passages 101, improved the stability of safety valve.In addition, be convenient to the assembling of safety valve, improved the efficiency of assembling of safety valve.
In addition, can also flange be set in passage, in closed position, closure member 20 is pressed on the upper surface of flange.
Further, the horizontal stand terrace 104 of described stepped part is provided with annular boss 11, at described closed position closure member 20, is pressed on annular boss 11.Thus, be convenient to further closure member 20 closing passages 101, make safety valve stable, avoid safety valve gas leakage.
As depicted in figs. 1 and 2, in embodiments more of the present utility model, closure member 20 comprises main body portion 21 and joint 22, the first end of joint 22 (the end of joint 22 outside path 10 1) as shown in Figure 1 is connected with main body portion 21, and the second end of joint 22 (joint 22 to the end in path 10 1) as shown in Figure 1 is connected with valve body 10, and gravity block 30 is located on the upper surface of main body portion 21.Thus, make the simple in structure of closure member 20, be convenient to moulding and the installation of closure member 20, improved the manufacturing efficiency of safety valve and reduced the cost of production of safety valve.In addition, adopting be arranged on valve body 10 on stable by joint 22 of main body portion 21, make the movement that main body portion 20 can be stable along the vertical direction, can also be stable being located on closure member 20 of gravity block 30, has improved the stability of safety valve.
Advantageously, the upper surface of main body portion 21 is provided with for holding the draw-in groove (not shown) of gravity block 30, and gravity block 30 removably is held in described draw-in groove.Thus, gravity block 30 stably is located on closure member 20, improved the stability of safety valve, and gravity block 30 is detachable, under different working environments, different gravity block 30 can be set, improved the Applicable scope of safety valve.
In addition, joint 22 is arc, and joint 22 often has the power of downward promotion main body portion 21.Thus, improve the stability in main body portion 21 moving process, made stable the moving of closure member 20 between open position and closed position, improved further the stability of safety valve.And the elastic reaction of the joint 22 of arc can increase the power to main body portion 21 downward directions, has improved the Applicable scope of safety valve.
According to an embodiment of the present utility model, also comprise valve gap 40, valve gap 40 lids are located on valve body 10, and valve gap 40 coordinates with valve body 10 for compressing the second end of joint 22.Thus, be convenient to the installation of closure member 20, improved the installation efficiency of closure member 20, save time.
Particularly, as shown in Figure 1, path 10 1 connects valve body 10 along the vertical direction, and the top of the wall of path 10 1 is provided with mounting groove, and valve gap 40 is provided with the fin coordinated with described mounting groove, the second end of joint 21 is located in described mounting groove, and described fin is pressed on the second end of joint 21.
As depicted in figs. 1 and 2, the center of valve gap 40 is provided with through hole.Thus, make gas fast by safety valve, be convenient to quick pressure releasing, improved Safety performance.
Advantageously, valve gap 40 is connected by screw with valve body 10.Thus, be convenient to being connected of valve gap 40 and valve body 10, improved the efficiency of assembling of safety valve.
According to an embodiment of the present utility model, closure member 20 is integrally formed.Thus, make the simple in structure of closure member 20, not only improved the shaping efficiency of closure member 20, but also reduced the cost of closure member 20.And integrally formed closure member 20 has higher structural strength, improved the working life of closure member 20.
Structure and the working principle of a concrete example of the present utility model are simply described with reference to the accompanying drawings.
The utility model provides a kind of magnetic force diaphragm-type safety valve, and it comprises: valve gap 40, closure member 20, gravity block 300 and valve body 10.Valve gap 40 is connected with valve body 10 and closure member 20 is fixed between them, offers the through hole be communicated with ambient atmosphere on valve gap 40.Closure member 20 use elastic caoutchouc class materials are made, and arch Bao Huan district is arranged in closure member 20, and closure member 20 intermediate portions stud with gravity block 30, and gravity block 30 can move up and down with closure member 20 intermediate portions.Valve body 10 is provided with path 10 1, and passage has suction port 102 and air outlet 103, and is provided with stepped part in path 10 1, and the interior edge of stepped part forms sealed mouth, and closure member 20 can seal the sealing mouth, and suction port 102 connects air-channel systems.Concrete structure as shown in Figure 1.
Working principle: when the gas pressure of suction port 102 input is low, closure member 20 seals valve body 10 sealed mouths because the Action of Gravity Field of gravity block 30 moves downward, and now safety valve is in the closed position, not exhaust (as shown in Figure 1).When the gas pressure of suction port 102 inputs surpasses the elastic force of gravity block 30 and closure member 20, closure member 20 and gravity block 30 move upward, safety valve is opened exhaust (as shown in Figure 2), and along with closure member 20 and gravity block 30 move up, downward gravity remains unchanged, the elastic force of closure member 20 can be ignored basically, so the pressure of safety valve can remain unchanged always substantially.The cracking pressure value of safety valve is set and can be realized by the gravity block 30 of changing Different Weight.Basically there are not frictional force in closure member 20 and gravity block 30 in the process of moving up and down, and therefore can improve the stability of safety valve, reduce requirement on machining accuracy.
In the description of this specification, the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the characteristics of this embodiment or example description.In this manual, the schematic statement of above-mentioned term not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or characteristics can be with suitable mode combinations in any one or more embodiments or example.
Although the above has illustrated and has described embodiment of the present utility model, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art is not in the situation that break away from principle of the present utility model and aim can be changed above-described embodiment in scope of the present utility model, modification, replacement and modification.
Claims (10)
1. a safety valve, is characterized in that, comprising:
Valve body, have passage in described valve body;
Closure member, described closure member is at the open position of opening described passage and close between the closed position of described passage and be located at movably on described valve body, and described open position is positioned at the top of described closed position; With
Gravity block, described gravity block is connected with described closure member for making described closure member often be subject to the power moved to described closed position.
2. safety valve according to claim 1, is characterized in that, in described passage, is formed with stepped part, at the described closure member of described closed position, is pressed on the horizontal stand terrace of described stepped part.
3. safety valve according to claim 2, is characterized in that, the horizontal stand terrace of described stepped part is provided with annular boss, at the described closure member of described closed position, is pressed on described annular boss.
4. safety valve according to claim 1, it is characterized in that, described closure member comprises main body portion and joint, and the first end of described joint is connected with described main body portion, and the second end of described joint is connected with described valve body, and described gravity block is located on the upper surface of described main body portion.
5. safety valve according to claim 4, is characterized in that, the top of described main body portion is provided with for holding the draw-in groove of described gravity block, and described gravity block removably is held in described draw-in groove.
6. safety valve according to claim 4, is characterized in that, described joint is arc, and described joint often has the power of the described main body portion of downward promotion.
7. safety valve according to claim 4, is characterized in that, also comprises valve gap, and described valve gap lid is located on described valve body and described valve gap coordinates with described valve body for compressing the second end of described joint.
8. safety valve according to claim 7, is characterized in that, the center of described valve gap is provided with through hole.
9. safety valve according to claim 7, is characterized in that, described valve gap and described valve body are connected by screw.
10. according to the described safety valve of any one in claim 1-9, it is characterized in that, described closure member is integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203139943U CN203322414U (en) | 2013-05-31 | 2013-05-31 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203139943U CN203322414U (en) | 2013-05-31 | 2013-05-31 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203322414U true CN203322414U (en) | 2013-12-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203139943U Expired - Fee Related CN203322414U (en) | 2013-05-31 | 2013-05-31 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203322414U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214380A (en) * | 2013-05-31 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Safety valve |
| CN106567949A (en) * | 2015-10-12 | 2017-04-19 | 海南广天恒科技发展有限公司 | Current limiting device special for fuel gas valve |
-
2013
- 2013-05-31 CN CN2013203139943U patent/CN203322414U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104214380A (en) * | 2013-05-31 | 2014-12-17 | 北京谊安医疗系统股份有限公司 | Safety valve |
| CN106567949A (en) * | 2015-10-12 | 2017-04-19 | 海南广天恒科技发展有限公司 | Current limiting device special for fuel gas valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20180531 |
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| CF01 | Termination of patent right due to non-payment of annual fee |