CN108758069B - Purely mechanical coded lock valve device with self-closing mechanism - Google Patents
Purely mechanical coded lock valve device with self-closing mechanism Download PDFInfo
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- CN108758069B CN108758069B CN201810730519.3A CN201810730519A CN108758069B CN 108758069 B CN108758069 B CN 108758069B CN 201810730519 A CN201810730519 A CN 201810730519A CN 108758069 B CN108758069 B CN 108758069B
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- 230000007246 mechanism Effects 0.000 title claims abstract description 56
- 238000009423 ventilation Methods 0.000 claims description 42
- 230000000903 blocking effect Effects 0.000 claims description 39
- 238000007789 sealing Methods 0.000 claims description 27
- 230000009471 action Effects 0.000 claims description 11
- 210000001503 joint Anatomy 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000013461 design Methods 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 29
- 230000006872 improvement Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
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- 230000004075 alteration Effects 0.000 description 1
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- 230000006399 behavior Effects 0.000 description 1
- UBAZGMLMVVQSCD-UHFFFAOYSA-N carbon dioxide;molecular oxygen Chemical compound O=O.O=C=O UBAZGMLMVVQSCD-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- 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
- F16K35/08—Means to prevent accidental or unauthorised actuation requiring setting according to a code, e.g. permutation locks
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- 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
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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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
The invention discloses a purely mechanical coded lock valve device with a self-closing mechanism, which comprises the self-closing mechanism, a mechanical coded lock and a pressure reducing valve interface assembly, wherein the self-closing mechanism and the coded lock can move backwards under the pushing of an external unlocking mechanism, so that the self-closing mechanism is opened, the coded lock can rotate axially, the unlocking mechanism is utilized to directly drive the coded lock to rotate axially, and the coded lock can realize the control of the on-off of an inflation channel after rotating a preset angle code. Through the ingenious design layout of the self-closing mechanism and the mechanical coded lock, the self-closing mechanism and the mechanical coded lock can be arranged in a limited transverse space at the same time, so that the requirements of national standards on safety are met, and the reliability and safety usability of illegal filling prevention are improved.
Description
Technical Field
The invention relates to gas filling auxiliary equipment, in particular to a purely mechanical coded lock valve device with a self-closing mechanism.
Background
Gases commonly used in daily life and production of people include liquefied gas, hydrogen, oxygen, carbon dioxide and the like, and some of the gases have inflammable and explosive properties, and the gases also have high-pressure properties during storage and filling, so that related properties of the related gases represent great danger. Among them, liquefied gas is used as the most frequently involved gas in the life of residents, and because of the characteristic of frequent filling, a very strict filling operation guidance program is formulated by the country in order to ensure safety. However, due to the driving of economic benefits, there are some illegal filling behaviors, such as cross filling of non-liquefied gas cylinders, illegal filling of gas cylinders by using unqualified equipment, and no strict development and guidance program operation in the filling process.
In order to further effectively suppress the above-mentioned illegal filling activity, it is technically necessary to design and manufacture the gas cylinder so as to effectively prevent illegal filling. Currently, valves or devices for controlling filling in the market are mainly electromagnetic valve limiting filling devices: the device is characterized in that a limiting filling mechanism is arranged in the angle valve, when the air bottle returns to a normal filling point, an operator supplies power to an electromagnetic coil on the air gun, and the electromagnetic coil generates magnetic force to open the limiting filling mechanism in the angle valve so as to complete the filling operation. In addition, the new national gas valve standard requirement, in order to ensure the use safety of users, the new gas valve design must be provided with a self-closing mechanism, and the 'illegal filling prevention mechanism' and the self-closing mechanism are arranged in the valve with small space, so that great challenges are brought to the design and research and development of the gas valve, and many manufacturers often cannot consider the requirements of both, and only can select and reduce the reliability requirement of the 'illegal filling prevention' mechanism to vacate the space to meet the self-closing mechanism required by the national standard as much as possible.
Disclosure of Invention
The invention aims at overcoming the defects of the prior art and providing a purely mechanical coded lock valve device with a self-closing mechanism.
In order to solve the defects in the prior art, the technical scheme provided by the invention is as follows: the valve device of the purely mechanical coded lock with the self-closing mechanism comprises a valve body, wherein one side of the valve body is provided with a transverse channel communicated with a valve body lower shell of the valve body, and the transverse channel is internally provided with the mechanical coded lock and the self-closing mechanism which can realize an opening state under the pushing of an external unlocking tool; the self-closing mechanism forms an automatic closing state under the action of the air pressure of the air bottle.
As an improvement of the purely mechanical coded lock valve device with the self-closing mechanism, the mechanical coded lock comprises a coded lock sleeve accommodated in the transverse channel, a gas blocking sliding block, a sealing ring, a first reset spring, a spring mounting cylinder, a first spring, a spring pressing block and a gas blocking piece are arranged in the coded lock sleeve, one end of the gas blocking sliding block is provided with a convex column, the outer side surface of the convex column is provided with a first layer of blocking ring and a second layer of blocking ring, the first coded piece component and the second coded piece component are sleeved on the convex column, the spring mounting cylinder and the first spring are arranged in the convex column, the gas blocking piece covers the gas blocking sliding block, the spring pressing block is pressed on the first spring, the gas blocking piece is contacted with the second coded piece component, and the second coded piece component drives the first coded piece component to rotate by a certain angle.
As an improvement of the purely mechanical coded lock valve device with the self-closing mechanism, when the mechanical coded lock is unlocked, the ventilation lock head rotates three times, the direction of rotating the ventilation lock head for the first time is opposite to the direction of rotating the ventilation lock head for the second time, and the direction of rotating the ventilation lock head for the second time is opposite to the direction of rotating the ventilation lock head for the third time;
when the ventilation lock head is rotated for the first time, the first cipher piece component and the second cipher piece component are simultaneously rotated and the rotating directions are the same, when the ventilation lock head is rotated for the second time, the ventilation lock head drives the second cipher piece component to rotate, after the second cipher piece component drives the first cipher piece component to rotate for a certain angle, the first cipher piece component is in an unlocking state, and when the ventilation lock head is rotated for the third time, the ventilation lock head drives the second cipher piece component to rotate for a certain angle, so that the second cipher piece component is in an unlocking state, and the whole mechanical cipher lock is in an unlocking state.
As an improvement of the purely mechanical coded lock valve device with the self-closing mechanism, the first coded sheet assembly comprises a first coded sheet mounting cylinder and a first coded sheet, a baffle ring is arranged at the bottom edge of the inner side wall of the first coded sheet mounting cylinder, a first end surface stop block is arranged on the baffle ring, a plurality of first arc-shaped grooves with the same radian are arranged at intervals on the inner side wall of the first coded sheet mounting cylinder, and a first group of convex teeth are arranged at intervals on the outer side edge of the first coded sheet mounting cylinder; the first cipher piece mounting cylinder is tightly attached to the air baffle piece;
one end face of the first cipher piece is provided with a second end face stop block, the other end face of the first cipher piece is provided with an annular end face groove, a convex blocking position is arranged in the annular end face groove, two first inner circumference stop blocks which are correspondingly arranged are arranged on the inner side wall of the first cipher piece, and the first end face stop blocks are clamped into the annular end face groove to be connected; the outer side of the first cipher piece is provided with a first positioning spring and a first positioning ball, the first positioning ball is connected with the end part of the first spring, and the first positioning ball is propped against the first arc-shaped groove; the first positioning spring and the first positioning ball are positioned in a gap between the first cipher piece and the inner side wall of the first cipher piece mounting cylinder;
as an improvement of the purely mechanical coded lock valve device with the self-closing mechanism, the second coded sheet assembly comprises a second coded sheet mounting cylinder and a second coded sheet, a plurality of second arc-shaped grooves with the same radian are formed in the inner side wall of the second coded sheet mounting cylinder at intervals, and a second group of convex teeth are formed in the outer side edge of the second coded sheet mounting cylinder at intervals; the second cipher chip mounting cylinder is positioned between the first layer baffle ring and the second layer baffle ring;
one end face interval of second cipher piece is equipped with a plurality of bumping posts, another end face of second cipher piece is equipped with annular boss, be equipped with two second in the interior circle Zhou Dangkuai that correspond the setting on the inside wall of annular boss, the interval is equipped with a plurality of square grooves that are used for grafting third terminal surface dog on the annular boss, and one of them square groove can be pegged graft wantonly to the third terminal dog, annular boss lateral surface is located one of them the position of second in the interior circle Zhou Dangkuai is equipped with second positioning spring and second locating ball, the second locating ball with the end connection of second positioning spring, the second locating ball supports to be propped in the second arc recess.
As an improvement of the purely mechanical coded lock valve device with the self-closing mechanism, the first layer of baffle ring is provided with two symmetrical first notches, and the second layer of baffle ring is provided with two symmetrical second notches; when the first cipher piece rotates to an unlocking state, the two first inner circumference check blocks are in one-to-one correspondence with the two first gaps, and when the second cipher piece rotates to the unlocking state, the two second inner circles Zhou Dangkuai are in one-to-one correspondence with the two second gaps.
As an improvement of the purely mechanical coded lock valve device with the self-closing mechanism, a plurality of first vent holes are formed at the joint of the air blocking sliding block and the convex column, and a plurality of second vent holes are formed at the lower end of the convex column; the edge of the air blocking sliding block is provided with a plurality of third groups of convex teeth at intervals;
when the mechanical coded lock is limited to be inflated: the second vent hole is sealed by the spring mounting cylinder, the first vent hole is sealed by the air baffle, and the vent hole on the air baffle is blocked and sealed by the third group of convex teeth.
As an improvement of the purely mechanical coded lock valve device with the self-closing mechanism, a plurality of butt joint hole sites are arranged on the ventilation lock head at intervals, the butt joint hole sites are matched with the blocking columns of the second coded sheets, an end face of the ventilation lock head is provided with a middle groove, a plurality of air holes are arranged on the edge of the middle groove at intervals, and a central hole site is arranged in the middle of the middle groove.
As an improvement of the purely mechanical coded lock valve device with the self-closing mechanism, the self-closing mechanism comprises a second reset spring, a self-closing sliding block, a self-closing flexible sealing body, a self-closing top seat and a second spring, wherein the second reset spring props against the self-closing sliding block, a plurality of protruding points are arranged on one end face of the self-closing flexible sealing body at intervals, a plurality of protruding point mounting holes matched with the protruding points are arranged on the self-closing sliding block at intervals, a sliding block top column is arranged at one end of the self-closing sliding block, a plurality of air holes are arranged on the sliding block top column at intervals, a clamping groove is formed in one end face of the self-closing top seat, a circular ring protrusion is arranged in the clamping groove, a connecting groove is formed in the other end face of the self-closing top seat, a connecting piece is arranged at the edge of the connecting groove, the second spring is arranged in the connecting groove, and the connecting piece is connected with the concave position of the bottom face of the coded lock sleeve; the outer side surface of the self-closing top seat is provided with a sealing groove, and a first sealing ring is arranged in the sealing groove;
when the self-closing mechanism is in a self-closing state, under the action of air pressure in the bottle, the self-closing sliding block is tightly attached to the self-closing top seat, the self-closing flexible sealing body is tightly attached to the annular protrusion of the self-closing top seat to form a seal, and meanwhile, the end face of the self-closing sliding block is attached to the bottom face of the coded lock sleeve.
The invention relates to an improvement of a purely mechanical coded lock valve device with a self-closing mechanism, which also comprises a pressure reducing valve interface component, wherein the pressure reducing valve interface component comprises a pressure reducing valve interface piece and a second sealing ring, and the second sealing ring is fixed in a sealing groove at the outer side of the pressure reducing valve interface piece.
As an improvement of the purely mechanical coded lock valve device with the self-closing mechanism, two clamp spring grooves are formed in the inner side wall of the transverse channel at intervals, a clamp spring is fixed in each clamp spring groove, one clamp spring is used for limiting outward movement of the pressure reducing valve connector, and the other clamp spring is used for limiting outward movement of the self-closing top seat.
Compared with the prior art, the invention has the advantages that: the self-closing mechanism is sealed by the conical soft rubber, and the soft rubber is provided with the protruding circular ring on the conical matching surface, so that the sealing performance of the self-closing mechanism is greatly improved; the mechanical coded lock capable of preventing illegal filling and the self-closing mechanism required by national standards are ingeniously arranged in a limited valve space and are in linkage, the coded lock and the self-closing mechanism simultaneously move backwards during unlocking, and the self-closing mechanism is opened and then starts to unlock, so that the use safety of a user is improved, and the reliability of a valve is increased. The first cipher piece mounting cylinder and the second cipher piece mounting cylinder are internally provided with the circular arc grooves, the circumferences of the circular arc grooves are equally divided, and the cipher pieces are provided with the corresponding positioning springs and the corresponding ball bearings, so that each rotation is a fixed angle value, accurate rotation can be realized, and meanwhile, the accident that the cipher pieces cannot be unlocked due to fine dislocation is avoided; the second cipher piece and the end surface stop block are designed in a split mode, a square groove is formed in the end surface of the second cipher piece, different cipher combinations can be combined only by adjusting the position of the end surface stop block in the square groove, and the cipher can be conveniently and quickly adjusted; the first cipher piece back is provided with terminal surface recess and protruding dog, cooperates the terminal surface dog on the first cipher piece installation section of thick bamboo, can accomplish the action of resetting, no matter how the external world interferes with the initial state of trick lock, can not influence the unlocking flow of trick lock: resetting, inputting a first password and a second password, and effectively improving the interference resistance of the coded lock; the mechanical coded lock valve device of the type has the advantages of less parts, low requirement on manufacturing precision, convenient and quick assembly, low production cost, numerous coded combinations, high cracking difficulty, no need of electromagnetic control for opening, and no potential safety hazard, so that the filling operation is convenient and quick and safe.
Drawings
The invention and its advantageous technical effects are described in further detail below with reference to the attached drawings and to the detailed description, wherein:
fig. 1 is a cross-sectional view of the present invention.
Fig. 2 is an exploded view of the present invention.
Fig. 3 is a cross-sectional view of the lower housing of the valve body of the present invention.
FIG. 4 is a schematic view of the self-closing slider structure of the present invention.
Fig. 5 is a schematic view of the structure of the self-closing flexible sealing body of the invention.
FIG. 6 is a schematic view of the structure of the self-closing top seat of the present invention.
Fig. 7 is a cross-sectional view of the self-closing top seat of the present invention.
FIG. 8 is a schematic view of the structure of the air baffle slider of the present invention.
FIG. 9 is a schematic view of the structure of the air baffle of the present invention.
Fig. 10 is a front view of the venting lock of the present invention.
Fig. 11 is a rear view of the vented lock head of the present invention.
Fig. 12 is a schematic view of the first combination sheet mounting cylinder of the present invention.
Fig. 13 is a front view of a first cipher slice of the present invention.
Fig. 14 is a rear view of a first code sheet of the present invention.
Fig. 15 is a schematic view of the construction of a second combination sheet mounting cylinder of the present invention.
FIG. 16 is a schematic diagram of a second cipher chip structure according to the present invention.
Fig. 17 is a schematic view of the sleeve structure of the coded lock of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and specific examples, to which embodiments of the invention are not limited.
As shown in fig. 1 to 17, a purely mechanical coded lock valve device with a self-closing mechanism comprises a valve body 10, wherein a transverse channel 109 communicated with a valve body lower shell 108 of the valve body 10 is arranged on one side of the valve body 10, a mechanical coded lock 20 and a self-closing mechanism 22 capable of realizing an opening state under the pushing of an external unlocking tool are arranged in the transverse channel 109; the self-closing mechanism 22 is brought into an automatic closing state by the gas cylinder pressure.
Preferably, the self-closing mechanism 22 comprises a second reset spring 221, a self-closing sliding block 222, a self-closing flexible sealing body 223, a self-closing top seat 225 and a second spring 226, wherein the second reset spring 221 props against the self-closing sliding block 222, a plurality of protruding points 223a are arranged on one end face of the self-closing flexible sealing body 223 at intervals, a plurality of protruding point mounting holes 222b matched with the protruding points 223a are arranged on the self-closing sliding block 222 at intervals, a sliding block top column 222c is arranged at one end of the self-closing sliding block 222, a plurality of air holes 222a are arranged on the sliding block top column 222c at intervals, a clamping groove is formed in one end face of the self-closing top seat 225, a circular ring protrusion 225c is arranged in the clamping groove, a connecting groove is formed in the other end face of the self-closing top seat 225, a connecting piece 225a is arranged at the edge of the connecting groove, the second spring 226 is arranged in the connecting groove, and the connecting piece 225a is connected with a concave position 201c on the bottom face of the coded lock sleeve 201; the outer side surface of the self-closing top seat 225 is provided with a sealing groove, and a first sealing ring 224 is arranged in the sealing groove;
when the self-closing mechanism 22 is in the self-closing state, under the action of air pressure in the bottle, the self-closing slide block 222 is tightly attached to the self-closing top seat 225, the self-closing flexible sealing body 223 is tightly attached to the annular protrusion 225c of the self-closing top seat 225 to form a seal, and meanwhile, the end face of the self-closing slide block 222 is tightly attached to the bottom face of the coded lock sleeve 201.
The mechanical coded lock 20 comprises a coded lock sleeve 201 accommodated in a transverse channel 109, a gas blocking slide block 203, a sealing ring 208, a first reset spring 202, a spring mounting cylinder 205, a first spring 206, a spring pressing block 207 and a gas blocking sheet 204 are arranged in the coded lock sleeve 201, a first coded sheet assembly 23, a second coded sheet assembly 24 and a ventilation lock head 217 are arranged at one end of the gas blocking slide block 203, a convex column 203a is arranged at the outer side surface of the convex column 203a, a first layer of blocking ring 203b and a second layer of blocking ring 203c are arranged at the outer side surface of the convex column 203a, the first coded sheet assembly 23 and the second coded sheet assembly 24 are sleeved on the convex column 203a, the spring mounting cylinder 205 and the first spring 206 are arranged in the convex column 203a, the gas blocking sheet 204 covers the gas blocking slide block 203, the spring pressing block 207 is pressed on the first spring 206, the ventilation lock head 217 is contacted with the second coded sheet assembly 24, and the second coded sheet assembly 24 drives the first coded sheet assembly 23 to rotate by a certain angle.
Preferably, when the mechanical coded lock 20 is unlocked, the vent lock head 217 rotates three times, the direction of the first rotation vent lock head 217 is opposite to the direction of the second rotation vent lock head 217, and the direction of the second rotation vent lock head 217 is opposite to the direction of the third rotation vent lock head 217;
when the ventilation lock head 217 rotates for the first time, the first code sheet component 23 and the second code sheet component 24 rotate simultaneously, the rotating directions are the same, when the ventilation lock head 217 rotates for the second time, the ventilation lock head 217 drives the second code sheet component 24 to rotate, after the second code sheet component 24 drives the first code sheet component 23 to rotate for a certain angle, the first code sheet component 23 is in an unlocking state, and when the ventilation lock head 217 rotates for the third time, the ventilation lock head 217 drives the second code sheet component 24 to rotate for a certain angle, so that the second code sheet component 24 is in an unlocking state, and the whole mechanical coded lock is in an unlocking state.
Preferably, the first code sheet assembly 23 comprises a first code sheet mounting cylinder 231 and a first code sheet 232, wherein a baffle ring 233 is arranged at the bottom edge of the inner side wall of the first code sheet mounting cylinder 231, a first end surface stop 234 is arranged on the baffle ring 233, a plurality of first arc-shaped grooves 235 with the same radian are arranged at intervals on the inner side wall of the first code sheet mounting cylinder 231, and a first group of convex teeth 236 are arranged at intervals on the outer side edge of the first code sheet mounting cylinder 231; the first cipher piece mounting cylinder 231 is tightly attached to the air baffle 204;
one end face of the first cipher piece 232 is provided with a second end face stop block 232c, the other end face of the first cipher piece 232 is provided with an annular end face groove 232a, a protruding stop 232b is arranged in the annular end face groove 232a, two first inner circumference stop blocks 232d which are correspondingly arranged are arranged on the inner side wall of the first cipher piece 232, and the first end face stop blocks 234 are clamped into the annular end face groove 232a for connection; the outer side of the first cipher piece 232 is provided with a first positioning spring 211 and a first positioning ball 210, the first positioning ball 210 is connected with the end part of the first positioning spring 211, and the first positioning ball 210 is propped against the first arc-shaped groove 235; the first positioning spring 211 and the first positioning ball 210 are positioned in a gap between the first code sheet 232 and the inner side wall of the first code sheet mounting cylinder 231;
preferably, the second code sheet assembly 24 comprises a second code sheet mounting cylinder 241 and a second code sheet 242, wherein a plurality of second arc-shaped grooves 243 with the same radian are arranged on the inner side wall of the second code sheet mounting cylinder 241 at intervals, and a second group of convex teeth 244 are arranged on the outer side edge of the second code sheet mounting cylinder 241 at intervals; the second code sheet mounting cylinder 241 is positioned between the first layer of retainer ring 203b and the second layer of retainer ring 203 c;
one end face of the second cipher piece 242 is provided with a plurality of blocking posts 242a at intervals, the other end face of the second cipher piece is provided with an annular boss 242d, two second inner circles Zhou Dangkuai e which are correspondingly arranged are arranged on the inner side wall of the annular boss 242d, a plurality of square grooves 242b which are used for being inserted with the third end face check block 213 are arranged on the annular boss 242d at intervals, one square groove 242b can be inserted with the third end face check block 213 at random, the position, located on one second inner circle Zhou Dangkuai e, of the outer side face of the annular boss 242d is provided with a second positioning spring 215 and a second positioning ball 216, the second positioning ball 216 is connected with the end part of the second positioning spring 215, and the second positioning ball 216 abuts against the second arc-shaped groove 243.
Preferably, the first layer of baffle ring 203b is provided with two symmetrical first notches 203d, and the second layer of baffle ring 203c is provided with two symmetrical second notches 203e; when the first combination piece 232 rotates to the unlocking state, the two first inner circumference stoppers 232d are in one-to-one correspondence with the two first notches 203d, and when the second combination piece 242 rotates to the unlocking state, the two second inner circles Zhou Dangkuai 242e are in one-to-one correspondence with the two second notches 203 e.
Preferably, the connection part of the air blocking slider 203 and the convex column 203a is provided with a plurality of first vent holes 203f, and the lower end of the convex column 203a is provided with a plurality of second vent holes 203g at intervals; a plurality of third groups of convex teeth 203h are arranged at intervals on the edge of the air blocking sliding block 203;
when the mechanical coded lock is limited to be inflated: the second vent hole 203g is sealed by a spring mounting cylinder 205, the first vent hole 203f is sealed by a gas barrier 204, and the vent hole 204a on the gas barrier 204 is blocked and sealed by a third set of teeth 203 h.
Preferably, a plurality of butt joint hole sites 217b are arranged on the ventilation lock head 217 at intervals, the butt joint hole sites 217b are matched with the stop posts 242a of the second cipher piece 242, a middle groove 217d is arranged on one end face of the ventilation lock head 217, a plurality of air holes 217a are arranged on the edge of the middle groove 217d at intervals, and a central hole site 217c is arranged in the middle of the middle groove 217 d.
Preferably, the pressure reducing valve interface assembly 21 is further included, the pressure reducing valve interface assembly 21 includes a pressure reducing valve interface member 218 and a second seal ring 219, and the second seal ring 219 is secured within a seal groove outside the pressure reducing valve interface member 218.
Preferably, two snap spring grooves 109a are formed in the inner side wall of the transverse channel 109 at intervals, and a snap spring 220 is fixed in each of the two snap spring grooves 109a, wherein one of the snap springs 220 is used for limiting the outward movement of the pressure reducing valve connector 218, and the other snap spring 220 is used for limiting the outward movement of the self-closing top seat 225.
Preferably, the valve body 10 includes a valve body upper shell 105 and a valve body lower shell 108, the valve body upper shell 105 is connected to the upper end of the valve body lower shell 108, a rotating main shaft 103 is arranged on the valve body upper shell 105 in a penetrating manner, a connecting nut 104, a hand wheel sealing cover 102 and a rotating hand wheel 101 are arranged at the upper end of the rotating main shaft 103, a valve body stop block 106 is arranged at the lower end of the rotating main shaft 103, a valve core sliding elastic stop block 107 is arranged at the lower end of the valve body stop block 106, the valve body stop block 106 and the valve core sliding elastic stop block 107 extend into the valve body lower shell 108, the rotating main shaft 103 is controlled to rotate clockwise through the rotating hand wheel 101, and the valve core sliding elastic stop block can seal the transverse channel 109. The rotation of the rotation main shaft 103 is controlled by rotating the hand wheel 101 to rotate anticlockwise, and the transverse channel 109 is communicated with the gas cylinder.
Unlocking process of mechanical coded lock:
(1) First rotation vent lock 217: the inflatable harness is inserted into the central hole 217c of the ventilation lock head 217, then under the action of the top of the inflatable harness, as in the normal use mode, the pressure reducing valve interface component and the mechanical coded lock component are simultaneously pushed backwards, at the moment, the bottom surface of the coded lock sleeve 201 is pushed against the end surface of the self-closing slide block 222 to move backwards for a certain stroke, and at the moment, the self-closing mechanism is in an open state; but the coded lock is still in a closed state at the moment; at this time, the harness is rotated anticlockwise until the ventilation lock head 217 cannot rotate, in this process, the ventilation lock head drives the second cipher piece 214 to rotate in the second cipher piece mounting cylinder 241, the end surface stop 213 contacts the second end surface stop 232c of the first cipher piece 232 to drive the first cipher piece 209 to rotate anticlockwise, the inner end surface of the first cipher piece mounting cylinder 231 is provided with a first end surface stop 234, the first end surface stop 234 is positioned in the annular end surface groove 232a of the first cipher piece 232, the annular end surface groove 232a is provided with a protruding stop 232b, when the first cipher piece 232 rotates anticlockwise, the protruding stop 232b contacts the first end surface stop 234 in the first cipher piece mounting cylinder 231, the first cipher piece 232 cannot rotate any more, and therefore the second cipher piece stops rotating, and the ventilation lock head also stops rotating; this process is a reset action prior to unlocking.
(2) Second rotation of the vented lock 217: rotating the vent lock 217 clockwise (here counter-clockwise if the reset action is clockwise) by a first code angle; in this process, the ventilation lock 217 drives the second code piece 214 to rotate in the second code piece mounting cylinder 212, the end surface stop 213 touches the second end surface stop 232c of the first code piece 232, and drives the first code piece 232 to rotate by a certain angle, so that the first inner circumference stop 232d of the first code piece 232 is aligned with the first notch 203d of the air blocking slider 203, and at this time, the first code piece 232 is in an unlocked state;
(3) Third rotation vent lock 217: the vent lock 217 is again rotated counter-clockwise (here clockwise if the above action is counter-clockwise) by a second code angle; in this process, the ventilation lock 217 drives the second code piece 242 to rotate in the second code piece mounting cylinder 212, so that the stop block on the inner hole of the second code piece 242 is aligned with the second notch 203e of the air blocking slider 203, at this time, the second code piece 242 is in an unlocked state, and the whole code lock is in an unlocked state;
at this time, the air charging operation is performed, because of the air pressure relationship, the air pushes the rectangular fluted disc of the air blocking slider 203 through the air vent of the air blocking sheet 204, and because the notch on the air blocking slider is aligned with the stop of the first code sheet 232 and the stop of the second code sheet 242, the air blocking slider 203 is pushed backwards under the action of the air pressure to compress the reset spring, the air vent notch on the air blocking slider 203 is dislocated with the air blocking sheet 204, and the air can enter the air bottle through the air vent notch, thereby completing the air charging operation.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made therein without departing from the principles and structure of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The purely mechanical coded lock valve device with the self-closing mechanism comprises a valve body (10), and is characterized in that a transverse channel (109) communicated with a valve body lower shell (108) of the valve body (10) is arranged on one side of the valve body (10), and a mechanical coded lock (20) and a self-closing mechanism (22) capable of realizing an opening state under the pushing of an external unlocking tool are arranged in the transverse channel (109); the self-closing mechanism (22) forms an automatic closing state under the action of the air pressure of the air bottle;
the mechanical coded lock (20) comprises a coded lock sleeve (201) accommodated in the transverse channel (109), a gas blocking sliding block (203), a sealing ring (208), a first reset spring (202), a spring mounting cylinder (205), a first spring (206), a spring pressing block (207), a gas blocking piece (204), a first coded piece component (23), a second coded piece component (24) and a ventilation lock head (217) are arranged in the coded lock sleeve (201), one end of the gas blocking sliding block (203) is provided with a convex column (203 a), the outer side surface of the convex column (203 a) is provided with a first layer of blocking ring (203 b) and a second layer of blocking ring (203 c), the first coded piece component (23) and the second coded piece component (24) are sleeved on the convex column (203 a), the spring mounting cylinder (205) and the first spring (206) are arranged in the convex column (203 a), the gas blocking piece (204) covers the gas blocking sliding block (203), the spring pressing block (207) presses the first spring (206) to the first coded piece component (24) and the second coded piece component (24) to rotate by a certain angle, and the first coded piece (24) is contacted with the first coded piece component (24);
when the mechanical coded lock (20) is unlocked, the ventilation lock head (217) rotates three times, the direction of rotating the ventilation lock head (217) for the first time is opposite to the direction of rotating the ventilation lock head (217) for the second time, and the direction of rotating the ventilation lock head (217) for the second time is opposite to the direction of rotating the ventilation lock head (217) for the third time;
when the ventilation lock head (217) is rotated for the first time, the first cipher piece assembly (23) and the second cipher piece assembly (24) are simultaneously rotated and the rotation directions are the same, when the ventilation lock head (217) is rotated for the second time, the ventilation lock head (217) drives the second cipher piece assembly (24) to rotate, after the second cipher piece assembly (24) drives the first cipher piece assembly (23) to rotate for a certain angle, the first cipher piece assembly (23) is in an unlocking state, and when the ventilation lock head (217) is rotated for the third time, the ventilation lock head (217) drives the second cipher piece assembly (24) to rotate for a certain angle, so that the second cipher piece assembly (24) is in an unlocking state, and the whole mechanical cipher lock is in an unlocking state;
the self-closing mechanism (22) comprises a second reset spring (221), a self-closing sliding block (222), a self-closing flexible sealing body (223), a self-closing top seat (225) and a second spring (226), wherein the second reset spring (221) props against the self-closing sliding block (222), one end face of the self-closing flexible sealing body (223) is provided with a plurality of protruding points (223 a) at intervals, the self-closing sliding block (222) is provided with a plurality of protruding point mounting holes (222 b) matched with the protruding points (223 a) at intervals, one end of the self-closing sliding block (222) is provided with a sliding block top column (222 c), one end face of the sliding block top seat (225) is provided with a clamping groove, the clamping groove is internally provided with a circular ring protrusion (225 c), the other end face of the self-closing top seat (225) is provided with a connecting groove, the edge of the connecting groove is provided with a connecting piece (225 a), and the second spring (226) is mounted in the connecting groove, and the bottom face of the connecting piece (225 a) is connected with the coded sleeve (201 c); the outer side surface of the self-closing top seat (225) is provided with a sealing groove, and a first sealing ring (224) is arranged in the sealing groove;
when the self-closing mechanism (22) is in a self-closing state, under the action of air pressure in the bottle, the self-closing sliding block (222) is tightly attached to the self-closing top seat (225), the self-closing flexible sealing body (223) is tightly attached to the annular protrusion (225 c) of the self-closing top seat (225) to form a seal, and meanwhile, the end face of the self-closing sliding block (222) is attached to the bottom face of the coded lock sleeve (201).
2. The purely mechanical coded lock valve device with the self-closing mechanism according to claim 1, wherein the first coded sheet assembly (23) comprises a first coded sheet mounting cylinder (231) and a first coded sheet (232), a baffle ring (233) is arranged at the bottom edge of the inner side wall of the first coded sheet mounting cylinder (231), a first end surface stop block (234) is arranged on the baffle ring (233), a plurality of first arc-shaped grooves (235) with the same radian are arranged at intervals on the inner side wall of the first coded sheet mounting cylinder (231), and a first group of convex teeth (236) are arranged at intervals on the outer side edge of the first coded sheet mounting cylinder (231); the first cipher piece mounting cylinder (231) is tightly attached to the air baffle piece (204);
one end face of the first cipher piece (232) is provided with a second end face stop block (232 c), the other end face of the first cipher piece (232) is provided with an annular end face groove (232 a), a protruding stop (232 b) is arranged in the annular end face groove (232 a), two first inner circumference stop blocks (232 d) which are correspondingly arranged are arranged on the inner side wall of the first cipher piece (232), and the first end face stop blocks (234) are clamped into the annular end face groove (232 a) to be connected; the outer side of the first cipher piece (232) is provided with a first positioning spring (211) and a first positioning ball (210), the first positioning ball (210) is connected with the end part of the first spring (206), and the first positioning ball (210) is propped in the first arc-shaped groove (235); the first positioning spring (211) and the first positioning ball (210) are positioned in a gap between the first cipher piece (232) and the inner side wall of the first cipher piece mounting cylinder (231);
the second cipher sheet assembly (24) comprises a second cipher sheet mounting cylinder (241) and a second cipher sheet (242), a plurality of second arc-shaped grooves (243) with the same radian are arranged on the inner side wall of the second cipher sheet mounting cylinder (241) at intervals, and a second group of convex teeth (244) are arranged on the outer side edge of the second cipher sheet mounting cylinder (241) at intervals; the second cipher chip mounting cylinder (241) is positioned between the first layer baffle ring (203 b) and the second layer baffle ring (203 c);
one end face interval of second cipher piece (242) is equipped with a plurality of backing posts (242 a), another end face of second cipher piece is equipped with annular boss (242 d), be equipped with two second interior circles Zhou Dangkuai (242 e) that correspond the setting on the inside wall of annular boss (242 d), the interval is equipped with square groove (242 b) that a plurality of are used for grafting third end face dog (213) on annular boss (242 d), and one of them square groove (242 b) can be pegged graft wantonly to third end face dog (213), the outside face of annular boss (242 d) is located one of them the position of second interior circle Zhou Dangkuai (242 e) is equipped with second positioning spring (215) and second positioning ball (216), second positioning ball (216) with the end connection of second positioning spring (215), second positioning ball (216) are supported in second arc recess (243).
3. The purely mechanical coded lock valve device with the self-closing mechanism according to claim 2, wherein the first layer baffle ring (203 b) is provided with two symmetrical first notches (203 d), and the second layer baffle ring (203 c) is provided with two symmetrical second notches (203 e); when the first cipher piece (232) rotates to an unlocking state, the two first inner circumference check blocks (232 d) are in one-to-one correspondence with the two first gaps (203 d), and when the second cipher piece (242) rotates to the unlocking state, the two second inner circles Zhou Dangkuai (242 e) are in one-to-one correspondence with the two second gaps (203 e).
4. The purely mechanical coded lock valve device with the self-closing mechanism according to claim 2, wherein a plurality of first vent holes (203 f) are formed at the connection part of the air blocking sliding block (203) and the convex column (203 a), and a plurality of second vent holes (203 g) are formed at the lower end of the convex column (203 a); a plurality of third groups of convex teeth (203 h) are arranged at intervals on the edge of the air blocking sliding block (203);
when the mechanical coded lock is limited to be inflated: the second ventilation holes (203 g) are sealed by the spring mounting cylinder (205), the first ventilation holes (203 f) are sealed by the air baffle plate (204), and the air holes (204 a) on the air baffle plate (204) are blocked and sealed by the third group of convex teeth (203 h).
5. The purely mechanical coded lock valve device with the self-closing mechanism according to claim 2, wherein a plurality of butt joint hole sites (217 b) are arranged on the ventilation lock head (217) at intervals, the butt joint hole sites (217 b) are matched with the baffle posts (242 a) of the second coded sheet (242), one end face of the ventilation lock head (217) is provided with a middle groove (217 d), a plurality of air holes (217 a) are arranged on the edge of the middle groove (217 d) at intervals, and a central hole site (217 c) is arranged in the middle of the middle groove (217 d).
6. The purely mechanical coded lock valve device with self-closing mechanism according to claim 1, further comprising a pressure relief valve interface assembly (21), the pressure relief valve interface assembly (21) comprising a pressure relief valve interface (218) and a second seal ring (219), the second seal ring (219) being secured in a seal groove outside the pressure relief valve interface (218).
7. The purely mechanical coded lock valve device with the self-closing mechanism according to claim 6, wherein two clamp spring grooves (109 a) are formed in the inner side wall of the transverse channel (109) at intervals, a clamp spring (220) is fixed in each clamp spring groove (109 a), one clamp spring (220) is used for limiting outward movement of the pressure reducing valve interface piece (218), and the other clamp spring (220) is used for limiting outward movement of the self-closing top seat (225).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730519.3A CN108758069B (en) | 2018-07-05 | 2018-07-05 | Purely mechanical coded lock valve device with self-closing mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810730519.3A CN108758069B (en) | 2018-07-05 | 2018-07-05 | Purely mechanical coded lock valve device with self-closing mechanism |
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| CN108758069B true CN108758069B (en) | 2023-12-19 |
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