CN203823166U - Safety valve - Google Patents
Safety valve Download PDFInfo
- Publication number
- CN203823166U CN203823166U CN201420161685.3U CN201420161685U CN203823166U CN 203823166 U CN203823166 U CN 203823166U CN 201420161685 U CN201420161685 U CN 201420161685U CN 203823166 U CN203823166 U CN 203823166U
- Authority
- CN
- China
- Prior art keywords
- diaphragm seal
- outer sleeve
- safety valve
- spring
- bonnet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 230000007935 neutral effect Effects 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 description 7
- 230000005484 gravity Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 239000000741 silica gel Substances 0.000 description 3
- 229910002027 silica gel Inorganic materials 0.000 description 3
- 229960001866 silicon dioxide Drugs 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000013013 elastic material Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
Landscapes
- Lift Valve (AREA)
Abstract
The utility model relates to a safety valve, and aims to provide a safety valve which is simple in structure and wide in use range. The safety valve comprises an outer sleeve, a sealing piece, a top rod, a valve bonnet and a spring, wherein the top end of the outer sleeve is open, threads are formed on the outer wall, and the outer sleeve is connected with the valve bonnet through the threads; a through hole is formed in the center of the bottom end of the outer sleeve, and a valve seat is arranged in the outer sleeve in the circumferential direction of the through hole; the edge at the bottom end of the sealing piece is horizontal, a boss is arranged in the center and is connected with the horizontal edge through an inclined plane, a groove is formed in the top end of the sealing piece which is placed at the top of the valve seat, and the horizontal edge of the bottom end of the sealing piece is movably connected with the top of the valve seat; the top rod is mounted in the outer sleeve, one end of the top rod is spherical surface, the size of the spherical surface is matched with the groove in the top end of the sealing piece, and the spherical surface is movably connected with the groove, and the other end of the top rod penetrates out of the top end of the valve bonnet; and the outer wall of the top rod is sleeved with the spring, the top end of the spring is tightly compressed with the inner wall of the valve bonnet, and the bottom end of the spring is tightly compressed with the spherical surface.
Description
Technical field
The utility model relates to valve field, particularly relates to a kind of safety valve that can automatic regulating valve door sealing according to valve placement direction difference.
Background technique
Safety valve is divided into gravity force type safety valve, magnetic type safety valve and Direct spring loaded safety valve substantially at present, and conventional safety valve uses round seal ring, special-shaped seal ring or soft elasticity (as silicagel pad) sealing gasket to seal conventionally.When gas pressure is during higher than the gravity of set gauge block, the magnetic force of magnet or the elastic force of spring, safety valve is opened, and discharges gas, and gas pressure is reduced to after setting value, and safety valve resets and forms sealing.
But existing safety valve has again a lot of deficiencys:
1, the valve installation position such as gravity force type safety valve, magnetic type safety valve is restricted, can only forward at right angle setting, and when side direction is installed or oppositely installs, safety valve can lose efficacy.In the time that the safety valve of this design is installed to portable set, because portable set uses placement direction indefinite, cause not necessarily vertically forward placement of safety valve, so Applicable scope is narrower.
2, the safety valve that uses circular seal ring, special-shaped seal ring or soft elasticity (as silicagel pad) sealing gasket to seal; when safety valve standing time is compared with long and while there is not breakdown action; due to the long-time pressurized of rubber or silica gel and aging; between seal ring and sealing surface, can form bonding; cracking pressure can be much larger than former setting pressure like this; thereby; in the time that equipment pressure arrives the settings that need protection; safety valve cannot normally be opened, and this can cause very large injury to the user of equipment.
3, traditional Direct spring loaded safety valve, its spool needs well location and guiding, otherwise cannot form sealing with sealing surface well.The leakage meeting producing causes a hidden trouble to equipment performance and personal security, so the processing of spool and guiding thereof needs very high machining accuracy, has greatly increased processing cost and man-hour, and has been unfavorable for energy-conserving and environment-protective.
Model utility content
The technical problems to be solved in the utility model is to provide a kind of simple in structure, cost is low, easy and simple to handle, using scope is wide safety valve.
The utility model safety valve, wherein, comprise outer sleeve, diaphragm seal, push rod, bonnet and spring, outer sleeve open-topped, on the outer wall of outer sleeve, be provided with screw thread, outer sleeve is connected with bonnet by the screw thread on outer wall, offer the first manhole in the neutral position on bonnet top, outer sleeve bottom end seal, and offer the second manhole in neutral position, outer sleeve bottom, along the circumferential direction be provided with valve seat in the second manhole inner side, diaphragm seal bottom edge level, neutral position is provided with boss, between boss and horizontal edge, be connected by inclined-plane, neutral position, diaphragm seal top offers cone-shaped groove, diaphragm seal is placed on valve seat top, the horizontal edge of diaphragm seal bottom contacts sealing with valve seat top, outer sleeve inside is provided with push rod, push rod one end is set to spherical, the cone-shaped groove on the size of spherical and diaphragm seal top cooperatively interacts, spherical is placed in the cone-shaped groove on diaphragm seal top, and contact with groove inwall, the other end of push rod passes from first manhole on bonnet top, on push rod outer wall, cover has spring, the tight bonnet top inner wall of spring top side pressure, spring bottom compresses the spherical of push rod bottom, the material of diaphragm seal is alloy aluminum or ceramic hard material.
The utility model safety valve, wherein said outer sleeve is the tube-shaped structure of vertically placing.
The utility model safety valve, wherein said valve seat top is in same level.
The utility model safety valve, the boss that wherein said diaphragm seal bottom arranges is circular, and the inclined-plane being connected between boss and horizontal edge is ring, and the angle of ring inclined-plane and horizontal edge joint is obtuse angle.
The utility model safety valve, wherein said diaphragm seal is disc.
The utility model safety valve difference from prior art is: the utility model is simple in structure, using scope is wide, simple to operate, cost is low.By cooperatively interacting of spring, spherical and diaphragm seal, spherical can provide good leading role, can make the diaphragm seal of run-off the straight recover sealing effect under the leading role of spherical and diaphragm seal, and the Applicable scope of safety valve is increased greatly.The design on ring inclined-plane, diaphragm seal bottom can make diaphragm seal under the pressure-acting of push rod after exhaust, returns to sealing station.The size of spring pressure can regulate by the degree of tightening of bonnet.Diaphragm seal adopts alloy aluminum or ceramic hard material, has avoided using circular seal ring or other elastic materials to cause and the adhesion of sealing surface because of pressure-acting for a long time, and safety pressure can not change, and has well ensured patient's safety.
Below in conjunction with accompanying drawing, safety valve of the present utility model is described further.
Brief description of the drawings
Elevational cross-sectional view when Fig. 1 is the utility model safety valve valve closes;
Elevational cross-sectional view when Fig. 2 is the utility model safety valve valve open.
Embodiment
As shown in Figure 1 and Figure 2, be the elevational cross-sectional view of the utility model safety valve, comprise outer sleeve 1, diaphragm seal 2, push rod 3, bonnet 4 and spring 5.Outer sleeve 1 is the tube-shaped structure of vertically placing, and outer sleeve 1 open-topped is provided with screw thread on the outer wall of outer sleeve 1, and outer sleeve 1 is connected with bonnet 4 by the screw thread on outer wall, offers the first manhole 7 in the neutral position on bonnet 4 tops.Outer sleeve 1 bottom end seal, and offer the second manhole 8 in outer sleeve 1 neutral position, bottom, being provided with valve seat 6 in outer sleeve 1 inside along the circumferencial direction of the second manhole 8, valve seat 6 tops, in same level, form sealing surface.Disc diaphragm seal 2 bottom edge levels, neutral position is provided with round boss, between round boss and horizontal edge, be connected by ring inclined-plane, the angle of ring inclined-plane and horizontal edge joint is obtuse angle, diaphragm seal 2 neutral positions, top offer cone-shaped groove, diaphragm seal 2 is placed on valve seat 6 tops, and the horizontal edge of diaphragm seal 2 bottoms contacts sealing with valve seat 6 tops, forms good sealing effect.In outer sleeve 1 inside, push rod 3 is installed, push rod 3 one end are set to spherical 9, the cone-shaped groove on the size of spherical 9 and diaphragm seal 2 tops cooperatively interacts, spherical 9 is placed in cone-shaped groove, and be in contact with one another with cone-shaped groove inwall, the other end of push rod 3 passes from first manhole 7 on bonnet 4 tops.On push rod 3 outer walls, cover has spring 5, and spring 5 tops compress bonnet 4 top inner wall, and spring 5 bottoms compress the spherical 9 of push rod 3 bottoms, make spherical 9 press seal sheets 2, thereby realize the sealing of diaphragm seal 2 and outer sleeve 1 sealing surface.The material of diaphragm seal 2 is alloy aluminum or ceramic hard material.
If safety valve of the present utility model is oppositely installed in the course of the work, can make the pressure of spring 5 increase by tightening bonnet 4, provide enough pressure to make spherical 9 press seal sheets 2, and ensure to form good sealing between diaphragm seal 2 and outer sleeve 1 sealing surface.If the utility model is oblique installation in the course of the work, diaphragm seal 2 is meeting run-off the straight under the effect of gravity, now tighten bonnet 4, the pressure of spring 5 increases, spherical 9 also can increase the pressure of cone-shaped groove, thereby make spherical 9 play the effect of guiding to diaphragm seal 2, make diaphragm seal 2 be returned to the position of matching with push rod 3 by oblique position.In the time of diaphragm seal 2 run-off the straight, valve seat 6 tops can come in contact with the ring inclined-plane of diaphragm seal 2 bottoms, and in the process of spring 5 superchargings, ring inclined-plane also can play to diaphragm seal 2 effect of guiding.Under the cooperation of spring 5, push rod 3 and diaphragm seal 2, as long as ensure that the direction of push rod is not offset, by the pressure of Regulation spring 5, between total energy guarantee diaphragm seal 2 and sealing surface, reach good sealing effect.
Safety valve of the present utility model can be used in the patient airway system of the medical equipment such as respiratory machine, Anesthesia machine, as shown in Figure 1, when equipment is during to patient's air feed, gas arrives safety valve, gas pressure is less, do not reach the cracking pressure of safety valve, due to the seal action of diaphragm seal 2, gas cannot overflow from here or leak.As shown in Figure 2, when unusual condition appears in equipment, when the gas pressure in air flue increases to suddenly the cracking pressure of safety valve, gas backs down diaphragm seal 2, gas is discharged from exhaust port, and the pressure in air flue is reduced to while being less than safety pressure, and spring 5 is pressed diaphragm seal 2 can form sealing by original position.
Safety valve of the present utility model, by cooperatively interacting of spring 5, spherical 9 and diaphragm seal 2, spherical 9 can provide good leading role, under the leading role of spherical 9 and diaphragm seal 2, can make the diaphragm seal 2 of run-off the straight recover sealing effect, and the Applicable scope of safety valve is increased greatly.The design on diaphragm seal 2 ring inclined-planes, bottom can make diaphragm seal 2 under the pressure-acting of push rod 3 after exhaust, returns to sealing station.The size of spring 5 pressure can regulate by the degree of tightening of bonnet 4.Diaphragm seal 2 adopts alloy aluminum or ceramic hard material, has avoided using circular seal ring or other elastic materials to cause and the adhesion of sealing surface because of pressure-acting for a long time, and safety pressure can not change, well ensured patient's safety.The utility model is simple in structure, using scope is wide, simple to operate, cost is low, compared with prior art has obvious advantage.
Above-described embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; do not departing under the prerequisite of the utility model design spirit; various distortion and improvement that those of ordinary skill in the art make the technical solution of the utility model, all should fall in the definite protection domain of the utility model claims.
Claims (5)
1. a safety valve, it is characterized in that: comprise outer sleeve (1), diaphragm seal (2), push rod (3), bonnet (4) and spring (5), outer sleeve (1) open-topped, on the outer wall of outer sleeve (1), be provided with screw thread, outer sleeve (1) is connected with bonnet (4) by the screw thread on outer wall, neutral position on bonnet (4) top offers the first manhole (7), outer sleeve (1) bottom end seal, and offer the second manhole (8) in outer sleeve (1) neutral position, bottom, along the circumferential direction be provided with valve seat (6) in the second manhole (8) inner side, diaphragm seal (2) bottom edge level, neutral position is provided with boss, between boss and horizontal edge, be connected by inclined-plane, diaphragm seal (2) neutral position, top offers cone-shaped groove, diaphragm seal (2) is placed on valve seat top, the horizontal edge of diaphragm seal (2) bottom contacts sealing with valve seat (6) top, outer sleeve (1) inside is provided with push rod (3), push rod (3) one end is set to spherical (9), the cone-shaped groove on the size of spherical (9) and diaphragm seal (2) top cooperatively interacts, spherical (9) is placed in the cone-shaped groove on diaphragm seal top, and contact with groove inwall, the other end of push rod (3) passes from first manhole (7) on bonnet (4) top, on push rod (3) outer wall, cover has spring (5), spring (5) top compresses bonnet (4) top inner wall, spring (5) bottom compresses the spherical (9) of push rod (3) bottom, the material of diaphragm seal (2) is alloy aluminum or ceramic hard material.
2. safety valve according to claim 1, is characterized in that: the tube-shaped structure of described outer sleeve (1) for vertically placing.
3. safety valve according to claim 1, is characterized in that: described valve seat (6) top is in same level.
4. safety valve according to claim 1, it is characterized in that: the boss that described diaphragm seal (2) bottom arranges is for circular, the inclined-plane being connected between boss and horizontal edge is ring, and the angle of ring inclined-plane and horizontal edge joint is obtuse angle.
5. safety valve according to claim 4, is characterized in that: described diaphragm seal (2) is disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161685.3U CN203823166U (en) | 2014-04-03 | 2014-04-03 | Safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420161685.3U CN203823166U (en) | 2014-04-03 | 2014-04-03 | Safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203823166U true CN203823166U (en) | 2014-09-10 |
Family
ID=51478670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420161685.3U Expired - Lifetime CN203823166U (en) | 2014-04-03 | 2014-04-03 | Safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203823166U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443817A (en) * | 2015-12-31 | 2016-03-30 | 宁波市鄞州华坚阀门有限公司 | Safety valve |
| CN108180311A (en) * | 2018-02-07 | 2018-06-19 | 菲时特集团股份有限公司 | One kind automatically cuts off angle valve |
| CN109000975A (en) * | 2018-06-15 | 2018-12-14 | 深圳市水务规划设计院有限公司 | Device for fetching water |
| CN109296788A (en) * | 2018-11-17 | 2019-02-01 | 大连悦迈科技服务有限公司 | Exhaust apparatus |
| CN109923310A (en) * | 2016-11-09 | 2019-06-21 | 株式会社神户制钢所 | Silencer |
| CN113090791A (en) * | 2021-03-03 | 2021-07-09 | 江苏八方工业装备有限公司 | Novel safety valve capable of preventing premature ejaculation |
| CN113483132A (en) * | 2021-07-20 | 2021-10-08 | 崇仁(厦门)医疗器械有限公司 | Pressure limiting device of breathing pipeline |
-
2014
- 2014-04-03 CN CN201420161685.3U patent/CN203823166U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105443817A (en) * | 2015-12-31 | 2016-03-30 | 宁波市鄞州华坚阀门有限公司 | Safety valve |
| CN109923310A (en) * | 2016-11-09 | 2019-06-21 | 株式会社神户制钢所 | Silencer |
| CN108180311A (en) * | 2018-02-07 | 2018-06-19 | 菲时特集团股份有限公司 | One kind automatically cuts off angle valve |
| CN109000975A (en) * | 2018-06-15 | 2018-12-14 | 深圳市水务规划设计院有限公司 | Device for fetching water |
| CN109296788A (en) * | 2018-11-17 | 2019-02-01 | 大连悦迈科技服务有限公司 | Exhaust apparatus |
| CN113090791A (en) * | 2021-03-03 | 2021-07-09 | 江苏八方工业装备有限公司 | Novel safety valve capable of preventing premature ejaculation |
| CN113483132A (en) * | 2021-07-20 | 2021-10-08 | 崇仁(厦门)医疗器械有限公司 | Pressure limiting device of breathing pipeline |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203823166U (en) | Safety valve | |
| CN204226765U (en) | A kind of spring safety valve and Anesthesia machine | |
| CN205350387U (en) | Novel powder spray device that can be used for spray gun | |
| CN204201202U (en) | A kind of Depressure valve | |
| CN203757108U (en) | Fuel gas cylinder valve | |
| CN204114258U (en) | A kind of pressure relief valve | |
| CN204062045U (en) | A kind of carbon dioxide reduction valve | |
| CN205173609U (en) | Dry -type alarm valve | |
| CN201731131U (en) | Gas cassette type valve | |
| CN209839680U (en) | Air inlet assembly of pressure tank | |
| CN203880152U (en) | Sprayer one-way valve | |
| CN207034300U (en) | Water tap valve | |
| CN206845894U (en) | A kind of sealing device of sewer pipe inspection cover | |
| CN201462124U (en) | Rubber safety valve | |
| CN207080669U (en) | A kind of effective carbon-dioxide pressure reducer | |
| CN205745360U (en) | A kind of hydrogen regulator | |
| CN207186507U (en) | A kind of safety pressure cooker with antiseepage airway dysfunction | |
| CN204664530U (en) | A kind of pressure relief valve | |
| CN202691092U (en) | Pneumatic control stop valve | |
| CN205207802U (en) | Safe universal hot water valve | |
| CN205371650U (en) | Special filler formula right angle valve of hex | |
| CN204289576U (en) | battery anti-explosion valve | |
| CN202144920U (en) | Sealing device adopting hard connection and used for gas pipeline of water heater | |
| CN204512614U (en) | Diffusion valve | |
| CN208682536U (en) | A kind of clamp-in valve with cone seal rubber mat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191210 Granted publication date: 20140910 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140910 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240403 Granted publication date: 20140910 |