WO2018085979A1 - Structure de soupape destinée à une serrure à combinaison - Google Patents

Structure de soupape destinée à une serrure à combinaison Download PDF

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Publication number
WO2018085979A1
WO2018085979A1 PCT/CN2016/105040 CN2016105040W WO2018085979A1 WO 2018085979 A1 WO2018085979 A1 WO 2018085979A1 CN 2016105040 W CN2016105040 W CN 2016105040W WO 2018085979 A1 WO2018085979 A1 WO 2018085979A1
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WO
WIPO (PCT)
Prior art keywords
lock
locking piece
piece
valve structure
driven
Prior art date
Application number
PCT/CN2016/105040
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English (en)
Chinese (zh)
Inventor
李斌
Original Assignee
深圳市兰洋科技有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 深圳市兰洋科技有限公司 filed Critical 深圳市兰洋科技有限公司
Priority to PCT/CN2016/105040 priority Critical patent/WO2018085979A1/fr
Publication of WO2018085979A1 publication Critical patent/WO2018085979A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K35/00—Means to prevent accidental or unauthorised actuation

Definitions

  • the present invention relates to the field of valve structure technology, and in particular, to a code lock valve structure.
  • Gases such as liquefied gas, oxygen, hydrogen, and carbon dioxide are commonly used in daily production and life, and these gases are generally flammable, high-pressure, and highly dangerous. Some gases cannot be mixed with other gases, otherwise they can cause serious safety accidents. For example, if the oxygen cylinder is filled with hydrogen, it will cause an explosion when used. Liquefied gas has a large market share in China due to its cleanliness and environmental protection. However, due to its high risk, the accident rate is still high, and in public, in the event of an accident, the hazard will be great.
  • the limit filling mechanism in all angle valves is the same. Only high-frequency electronic tags can be used to identify whether there is permission to fill. If a large number of cylinders are copied or cracked, then one can ⁇ Open all the angle valve charging mechanism; 2)
  • the electromagnetic coil is also easy to control, do not need to read the high frequency electronic tag to identify the angle valve identity, directly supply power to the electromagnetic coil, and its magnetic field can also be used in the angle valve
  • the filling mechanism is restricted to charge the cylinder with liquefied gas.
  • the other type of valve is controlled by a password. It uses the password lock principle to lock the valve stem. The valve stem cannot be rotated without opening the password. After the password is correctly turned on, the valve stem can be turned to reach the valve.
  • the advantage of this technology is that each valve has a different password, which is very difficult to crack, so the security is very high; the disadvantage is that the password needs to be remembered by the person, and the password is turned according to the dial on the valve. Once the password leaks the valve, it can be snored. This reduces safety and remembers the different passwords for each valve each time, which also causes a lot of trouble for the operation.
  • An object of the present invention is to provide a code lock valve structure, which aims to solve the problems in the prior art that the existing liquefied gas cylinder valve has poor safety of charging and troublesome operation.
  • Embodiments of the present invention provide a password lock valve structure, including a valve assembly, the valve assembly includes a valve body having an air passage, and the valve body is provided with a code lock assembly along the axial direction thereof, and the code lock The assembly includes a set of locks that are axially rotatable within the valve body to control the passage of the air passage.
  • the combination lock assembly further includes a lock shaft connected to the lock piece group for driving the lock piece group to rotate axially to control the air passage opening and closing.
  • the bottom end of the valve body has an extension portion connected to the air passage and connectable to the air cylinder, and the lock piece group and the lock shaft are disposed in the extension portion.
  • an outer edge of the locking piece group is sealed with an inner wall of the extending portion.
  • the locking piece set includes a first locking piece and a second locking piece which are axially rotatably sleeved on the locking shaft, and the first locking piece and the second locking piece respectively respectively a first venting hole and a second venting hole are provided; the first locking piece is tightly sealed with the second locking piece, and an outer edge of the first locking piece and/or the second locking piece is The inner wall of the extension is sealed.
  • the locking piece set further includes a driving locking piece for driving the first locking piece and the second locking piece to rotate axially around the locking shaft, and the driving locking piece is sleeved And on the lock shaft and its axial rotation positioning connection.
  • the driving lock piece upper sleeve is provided with a third vent hole for engaging the first vent hole and the second vent hole through the air passage; the driving lock piece and the first The locking tab is snugly sealed.
  • the driving locking piece has an active blocking post on a side surface of the first locking piece, and a first driven blocking column protrudes outwardly from opposite sides of the first locking piece.
  • a second driven baffle protrudes from a side of the second locking piece facing the first locking piece, and the active blocking post, the first driven blocking post and the second driven blocking post are resistively engaged.
  • the first driven baffle includes a first main driven baffle and a first sub-driven baffle respectively on opposite sides of the first locking piece, and the active baffle And the first primary driven brace is resistively engaged with the second driven brace.
  • a positioning block is fixedly disposed on the lock shaft, and the positioning block of the driving lock piece is provided with a positioning groove adapted to the positioning block, and the positioning block is received in the positioning groove to form an axis. Position to the rotation.
  • the locking shaft is detachably sleeved with one end of the second locking piece, and the limiting member cooperates with the positioning block to clamp the driving locking piece, the first a locking piece and the second locking piece.
  • the outer wall of the lock shaft is provided with an air outlet slit for exhausting gas in the gas cylinder, and the air outlet slit extends from one end to the other end along the longitudinal direction of the lock shaft.
  • the password lock valve structure proposed by the embodiment of the present invention is provided with an axially rotatable locking piece group along the axial direction of the valve body, and the yoke mechanism is directly or Indirectly driving the locking piece group to rotate the corresponding password angle, so that the locking piece group controls the opening and closing of the air passage after rotating the corresponding password angle, so that the purpose of limiting the filling of the filling fluid or allowing the filling of the filling fluid can be achieved. It limits the safety of filling and is easy to operate.
  • FIG. 1 is a schematic cross-sectional view showing a structure of a code lock valve according to an embodiment of the present invention
  • FIG. 2 is a partial cross-sectional view showing the structure of a PIN lock valve in a shackle state according to an embodiment of the present invention
  • FIG. 3 is a schematic perspective structural view of a lock shaft according to an embodiment of the present invention.
  • FIG. 4 is a perspective view of a side of the driving lock piece facing upwards according to an embodiment of the present invention
  • FIG. 5 is a perspective view of the other side of the driving lock piece facing upwards according to an embodiment of the present invention.
  • FIG. 6 is a perspective view of a first side of the first locking piece facing upwards according to an embodiment of the present invention
  • FIG. 7 is a perspective view showing the other side of the first locking piece facing upward in the embodiment of the present invention.
  • FIG. 8 is a perspective view of a second lock piece according to an embodiment of the present invention.
  • an embodiment of the present invention provides a password lock valve structure.
  • the code lock valve structure may include a valve assembly 1 , and the valve assembly 1 may include a valve body 11 and a valve plug 12 .
  • the upper end of the upper end of the 11 is connected with the valve plug 12, and the valve wheel 13 is driven by the smooth needle or the reverse needle.
  • the valve plug 12 is driven to realize the on-off control of the upper and lower sections of the air passage M.
  • the valve body 11 is provided with a combination lock assembly 2 for controlling the air passage M to be opened and closed.
  • the automatic shackle mechanism is adopted. It is not shown)
  • the rotation of the hand wheel 14 is continued, and then the code lock assembly 2 is controlled to control the opening and closing of the air passage M, so that the entire lock valve structure can be turned on and off.
  • the combination lock assembly 2 can include a locking piece set 21 disposed along the axial direction of the valve body 11, wherein the locking piece set 21 can control the gas after axially rotating the corresponding code angle in the valve body 11. The continuity of the road M.
  • the PIN lock valve structure of the embodiment of the present invention drives the lock group 21 directly or indirectly by the yoke mechanism by rotating the lock group 21 that is axially rotatable in the axial direction of the valve body 11.
  • the password angle allows the lock group 21 to rotate the corresponding password angle to control the opening and closing of the air passage M, thereby limiting the filling of the filling fluid or allowing the filling of the filling fluid, which limits the filling safety and operation.
  • the combination lock assembly 2 may further include a lock shaft 22, wherein the lock shaft 22 is disposed in the axial direction of the valve body 11, and the lock shaft 22 passes through the lock piece group 21 and Connected, and the lock shaft 22 is axially rotationally coupled to the valve plug 12, where the lock shaft 22 is used to drive the lock group 21 to rotate axially to control the gas.
  • the corresponding password angle of the hand wheel 14 is rotated by the automatic shackle mechanism. During the rotation process, the valve is first smashed to make the upper and lower sections of the air passage M pass through, and the shaft of the hand wheel 14 is rotated.
  • the locking shaft 22 drives the locking piece group 21 to rotate axially to control the opening and closing of the air passage M.
  • the password angle is preset for the production locking piece group 21 ⁇ .
  • the locking piece group 21 can also be directly connected and driven by an automatic shackle mechanism, which is not limited herein.
  • a label is mounted on the password lock valve structure or the gas cylinder, and the label may be a high frequency or ultra high frequency electronic label, a one-dimensional barcode or a two-dimensional code.
  • the label has the password, gas cylinder information, customer and other information of the password lock valve structure.
  • the tag reader reads the information in the tag to determine whether the cylinder is allowed to be filled. If the filling is allowed, the code in the tag is driven by the shackle mechanism to drive the code lock assembly 2 to rotate axially.
  • the road M is integrated. That is to say, the axial rotation of the code lock assembly 2 by the shackle mechanism can control the opening and closing of the air passage M, thereby achieving the purpose of limiting the filling and avoiding the safety hazard caused by the illegal filling.
  • the password lock valve structure proposed by the embodiment of the invention has the following characteristics compared with the prior art:
  • the password lock valve structure proposed by the embodiment of the present invention does not need a digital dial, even if the password is known, it is difficult to open the password lock component 2 because it cannot be located;
  • the password is saved on the label, and the password is obtained by reading the label before starting, so that the password lock component 2 can be activated by the lock mechanism without the operator remembering the password. Get rid of the dependence on people, and the same can be automated. That is to say, since the tag for recording the identity and password is matched with the password lock component 2, the cross-filling is effectively controlled, the illegal filling and the error filling behavior are eliminated, the safety is improved, and the operation is simple.
  • the bottom end of the valve body 11 has an extension portion 112 connectable to a gas cylinder (liquefied gas cylinder, oxygen gas cylinder, etc.) or a pipe, and the extension portion 112 is located at the gas.
  • the bottom end of the track M is connected to the bottom end of the track M, and the above-mentioned combination lock component 2 is disposed in the extension portion 112, of course, according to the actual situation,
  • the combination lock assembly 2 may be disposed in other parts of the valve body 11, such as a side portion, etc., which is not limited herein.
  • the outer edge of the locking piece group 21 of the combination lock assembly 2 is sealed with the inner wall of the extending portion 112, so that when the locking piece group 21 is closed, the air passage M is Blocking, the filling fluid on the upper side of the locking piece group 21 cannot pass through and enters the lower side of the locking piece group 21, that is, the charging limit is achieved; on the contrary, when the locking piece group 21 is in the open state, the air passage M is unblocked, and the locking piece is locked.
  • the filling fluid on the upper side of the group 21 can pass through and enter the lower side of the locking piece group 21, and the filling can be smoothly performed.
  • the upper and lower sides of the locking piece group 21 and the inner wall of the extending portion 112 may be sealed by other means, such as a gasket or the like, which is not limited herein.
  • the locking piece group 21 may include a first locking piece 211 and a second locking piece 212, and the first locking piece 211 and the second locking piece 212 are sleeved on the locking shaft. 22, and the first locking piece 211 and the second locking piece 212 are axially rotatable about the lock shaft 22.
  • the first locking piece 211 is provided with a first ventilation hole 2110
  • the second locking piece 212 is provided with a second ventilation hole 2120 adapted to the first ventilation hole 2110.
  • the second ventilation hole 2120 is
  • the first venting holes 2110 are preferably the same two venting holes.
  • first locking piece 211 and the second locking piece 212 abut against each other to form a seal, and the outer edges of the first locking piece 211 and the second locking piece 212 are sealed with the inner wall of the extending portion 112, or The outer edge of any one of the first locking piece 211 and the second locking piece 212 is sealed with the inner wall of the extending portion 112, such that during the axial rotation of the first locking piece 211 and the second locking piece 212, when the first The vent hole 2110 is vertically aligned with the second vent hole 2120, and a gap is formed between the first locking piece 2 11 and the second locking piece 212, and the filling fluid can pass between the two; otherwise, when the first vent hole 2110 The second vent hole 2120 is completely misaligned, and a gap is formed between the first locking piece 211 and the second locking piece 212, and the filling fluid cannot pass through the two.
  • the other embodiments of the present invention may further include other numbers of locking pieces, such as three, four, or more,
  • the locking piece set 21 further includes a driving locking piece 213 for driving the first locking piece 21 1 and the second locking piece 212 to rotate axially around the lock shaft 22,
  • the driving locking piece 213 is sleeved on the locking shaft 22 and is axially rotatably and locatingly connected thereto, that is, the driving locking piece 213 can rotate synchronously with the axial rotation of the locking shaft 22, wherein the driving locking piece 213 is preferably located at the same position.
  • the locking piece 213 is further driven. It can be located at other positions on the lock shaft 22, which is not limited herein.
  • the driving lock piece 213 is provided with a third vent hole 2130 adapted to the first vent hole 2110 and the second vent hole 2120, where the The three vent holes 2130 and the first vent holes 2110 and the second vent holes 2120 are preferably the same three vent holes.
  • the driving piece 213 is adjacent to the first locking piece 211, and the opposite surfaces of the two are in close contact with each other to form a seal, so that the locking piece 213, the first locking piece 211 and the second locking piece 212 are tightly coupled.
  • the outer locking edge of one or both of the first locking piece 211 and the second locking piece 212 is sealed with the inner wall of the extending portion 112, so that the locking piece 213 is driven to drive the first locking piece 211 and the first portion.
  • the locking piece 213 is driven between the locking piece 213 and the first locking piece 211 and the second locking piece 212.
  • the through hole is formed, and the air passage M is penetrated, and the filling fluid can pass between the three; on the contrary, when the third vent hole 2130, the first vent hole 2110, and the second vent hole 2120 are completely wrong.
  • the ⁇ or the three are completely wrong, and the locking piece formed by the three locking pieces forms a blockage. Therefore, the air passage M is blocked and the filling fluid cannot pass through.
  • the amount of ventilation flow can be adjusted by adjusting the size of the vent hole overlap on each of the locking pieces.
  • the driving locking piece 213 has an active blocking post 2131 facing the side of the first locking piece 211, and the opposite sides of the first locking piece 211 protrude outward.
  • a driven block 21 11 , a second driven block 212 1 protrudes outwardly from a side of the second locking piece 212 facing the first locking piece 211 .
  • the active blocking column 2131, the first driven blocking column 2111 and the second driven blocking column 2121 can be performed. Resist the fit.
  • the first driven baffle 2111 may include a first main driven baffle 211 lh and a first sub-driven baffle 211 lh respectively located on opposite sides of the first locking piece 211, wherein the active buck is The second sub-driven brace 211 lh ' can be resisted and engaged with the second driven brace 2121.
  • the lock piece 213 is driven to rotate synchronously with the lock shaft 22, and when the lock piece 213 is rotated by a certain angle ⁇ , the active block of the lock piece 213 is driven.
  • the column 2131 touches and resists the first main driven stop 211 lh and drives the first locking piece 211 to rotate axially, and continues to rotate a certain angle ⁇ , the first auxiliary driven stop 2111h 'touches and resists the second driven
  • the blocking post 2121 drives the second locking piece 212 to perform axial rotation.
  • the above-mentioned driving locking piece 213, the first locking piece 211 and the second locking piece 212 may pass other parties.
  • the transmission is coordinated, and is not limited here.
  • the lock shaft 22 is fixedly disposed with a positioning block 221, and correspondingly, the driving lock piece 213 is provided with a positioning groove 2132 adapted to the positioning block 221, and the positioning block The 221 is placed in the positioning groove 2132 to form an axial rotation position. That is to say, by the positioning rotation of the positioning block 221 and the axial rotation of the positioning groove 2132, the driving locking piece 213 can be synchronously rotated with the axial rotation of the locking shaft 22.
  • the lock shaft 22 and the driving lock piece 213 can be axially rotated and positioned by other means, which is not limited herein.
  • the end of the lock shaft 22 adjacent to the second locking piece 212 is detachably sleeved with a limiting member 23, and the limiting member 23 is matched with the positioning block 221
  • the locking piece 213, the first locking piece 211 and the second locking piece 212 are driven by the above.
  • the limiting member 23 is preferably a nut.
  • the outer wall of the lower end of the locking shaft 22 has an external thread, and the limiting member 23 is sleeved on the outer wall of the lower end of the locking shaft 22 to be detachably fastened.
  • the locking piece 213, the first locking piece 211 and the second locking piece 212 may be clamped by other means.
  • the outer wall of the lock shaft 22 is provided with an air outlet seam 220, and the air outlet slit 220 extends from one end to the other end along the length direction of the lock shaft 22, where the air outlet is exhausted.
  • the slit 220 is used to supply gas to the gas in the gas cylinder or the pipeline, that is, in the gas cylinder, the vent holes on the lock group 21 are blocked by the air passage M, so that the gas in the gas cylinder or the pipeline cannot pass through the lock.
  • the air vents on the group 21 are vented, and the air gap 220 is set on the outer wall of the lock shaft 22, so that the gas in the gas cylinder or the pipeline can be vented through the gas outlet 220 to meet the gas demand.
  • the gap of the air outlet slit 220 is small, when the air vent holes are blocked in the lock piece group 21 and the air passage M is blocked, the gas cylinder is filled, even if a part of the fluid is filled, but the gap is large. Part of the fluid cannot be filled in the short chamber through the air outlet 220, that is, the purpose of limiting the filling is achieved.
  • the normal air consumption of the valve structure can also be realized by other means, which is not limited herein.
  • the outer edge of the driving locking piece 213, the first locking piece 211 and the second locking piece 21 2 and the inner wall of the extending portion 112 may be closely sealed, Can be sealed by a seal, also It can be sealed by other means; in addition, a plurality of vent holes corresponding to each other can be disposed on each of the lock pieces, and it is not limited to only one vent hole.
  • the snoring step of the above-described password lock valve structure is as follows:
  • the first step the driving component of the shackle mechanism rotates counterclockwise, indirectly driving the lock shaft 22 to rotate the first password angle by the reverse rotation of the needle, and the lock shaft 22 drives the lock 213 to rotate the needle to drive the lock.
  • the active stop 2 131 on the piece 213 will touch the first main driven block 2111h on the first locking piece 211 after rotating a certain angle, so that the first locking piece 211 will also be driven to rotate the reverse pin, A locking piece 211 continues to rotate counterclockwise, and the first secondary driven stop 211 lh ' on the second locking piece 212 of the second locking piece 212 will be touched, so that the second locking piece 2 12 will also Being driven by the reverse needle;
  • the second step the driving component of the shackle mechanism rotates the second password angle by the second pin, the angle is relatively small, and the first locking piece 211 is driven to rotate the locking piece 213 to drive the smoothing pin, because the angle is relatively small.
  • the first locking piece 211 does not drive the second locking piece 212 to rotate; after the first locking piece 211 rotates the second password angle, the first venting hole 2110 of the first locking piece 2 11 and the second locking piece 212 are Two vent holes 2120 are aligned;
  • the third step the driving component of the shackle mechanism rotates the third password angle by the reverse stitching, the angle is relatively small, and the driving piece 213 does not drive the first locking piece 211 to rotate, and after rotating the angle, the locking piece is driven
  • the third vent hole 2130 on the 213 is aligned with the first vent hole 2110 of the first locking piece 211 and the second vent hole 2120 of the second locking piece 212. Thereafter, when the fluid is filled into the valve port, the third vent hole is formed. 2130, the first vent hole 2110 and the second vent hole 2120 are aligned, so that the entire air passage M is unblocked, so that the filling fluid can be smoothly filled into the gas cylinder or the pipeline.
  • the shackle of the above-mentioned password lock valve structure can also be used: the first step is to rotate the needle, the second step is to rotate the needle, the second step
  • the first step is to rotate the needle
  • the second step is to rotate the needle
  • the lower locking piece and the upper locking piece are closely attached.
  • the plane frictional force is less than the friction between the outer edge of the lower side locking piece and the inner wall of the extension portion, so that the lower side locking piece does not follow the rotation, and only the upper side locking piece and the lower side locking piece are in contact with each other.
  • the upper locking piece can be rotated together with the lower side locking piece, thus effectively ensuring the accuracy of the password locking.
  • the upper side locking piece and the lower side locking piece are only the distinction between the two adjacent locking pieces, that is, in the embodiment, the upper side locking piece and the lower side locking piece are They are respectively represented as driving the locking piece 213 and the first locking piece 211, or the first locking piece 211 and the second locking piece 212.
  • the embodiments described above are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any equivalents can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention. Modifications, substitutions and improvements, etc., are intended to be included within the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

L'invention concerne une structure de soupape destinée à une serrure à combinaison comprenant un ensemble soupape (1). L'ensemble soupape (1) comprend un corps (11) de soupape comprenant un canal d'air (M). Un ensemble de serrure à combinaison (2) est disposé dans le corps (11) de soupape dans la direction axiale du corps (11) de soupape, et comprend un ensemble (21) de plaques de verrouillage apte à tourner axialement dans le corps (11) de soupape pour commander le déverrouillage et le verrouillage du canal d'air (M). Dans la structure de soupape destinée à une serrure à combinaison, l'ensemble (21) de plaques de verrouillage pouvant tourner axialement dans la direction axiale du corps (11) de soupape est disposé dans le corps (11) de soupape, et un mécanisme de déverrouillage amène directement ou indirectement l'ensemble (21) de plaques de verrouillage à tourner selon des angles de mot de passe correspondants, de sorte que l'ensemble (21) de plaques de verrouillage tourne selon des angles de mot de passe prédéfinis, puis à permettre le déverrouillage ou le verrouillage du canal d'air (M) ; de cette manière, l'objectif de limiter ou de permettre le remplissage d'un fluide de remplissage peut être obtenu, et la sécurité de la limitation de remplissage est élevée, et les opérations sont simples.
PCT/CN2016/105040 2016-11-08 2016-11-08 Structure de soupape destinée à une serrure à combinaison WO2018085979A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/105040 WO2018085979A1 (fr) 2016-11-08 2016-11-08 Structure de soupape destinée à une serrure à combinaison

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/105040 WO2018085979A1 (fr) 2016-11-08 2016-11-08 Structure de soupape destinée à une serrure à combinaison

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WO2018085979A1 true WO2018085979A1 (fr) 2018-05-17

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651831A (en) * 1970-04-29 1972-03-28 Irving Gardner Safety bleeder valve
CN2527820Y (zh) * 2002-02-25 2002-12-25 万伟刚 密码锁阀门
CN2702133Y (zh) * 2004-06-16 2005-05-25 王培望 陶瓷钢瓶气阀
WO2006046238A1 (fr) * 2004-10-25 2006-05-04 E-Lock Technologies Limited Dispositif de recouvrement protecteur
CN1821635A (zh) * 2006-03-20 2006-08-23 杨庆华 一种带密码锁的阀门
CN101865313A (zh) * 2010-06-25 2010-10-20 谭启纯 一种石油气钢瓶控制阀
CN202001620U (zh) * 2010-12-30 2011-10-05 超群钢瓶有限公司 用于高压气体钢瓶的开关阀
CN103672141A (zh) * 2013-12-10 2014-03-26 严灿� 一种新型的防充装燃气阀门
CN105074304A (zh) * 2013-04-03 2015-11-18 锡克拜控股有限公司 一次性使用的阀

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3651831A (en) * 1970-04-29 1972-03-28 Irving Gardner Safety bleeder valve
CN2527820Y (zh) * 2002-02-25 2002-12-25 万伟刚 密码锁阀门
CN2702133Y (zh) * 2004-06-16 2005-05-25 王培望 陶瓷钢瓶气阀
WO2006046238A1 (fr) * 2004-10-25 2006-05-04 E-Lock Technologies Limited Dispositif de recouvrement protecteur
CN1821635A (zh) * 2006-03-20 2006-08-23 杨庆华 一种带密码锁的阀门
CN101865313A (zh) * 2010-06-25 2010-10-20 谭启纯 一种石油气钢瓶控制阀
CN202001620U (zh) * 2010-12-30 2011-10-05 超群钢瓶有限公司 用于高压气体钢瓶的开关阀
CN105074304A (zh) * 2013-04-03 2015-11-18 锡克拜控股有限公司 一次性使用的阀
CN103672141A (zh) * 2013-12-10 2014-03-26 严灿� 一种新型的防充装燃气阀门

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