阅读说明：本技术 一种定量使用的节能型燃气设备 (Energy-saving gas equipment of ration use ) 是由 刘俊坡 于 2020-07-16 设计创作，主要内容包括：本发明公开了一种定量使用的节能型燃气设备,包括箱体,箱体内设置有燃气储存罐腔,燃气储存罐腔内放置有燃气储存罐,燃气储存罐顶端设置有自动旋转通断燃气机构,自动旋转通断燃气机构能够手动选择是否持续输送燃气且能够自动控制输送定量的燃气,燃气储存罐上端固定连接有输气管,输气管右端与输气总管密封连接,输气总管左端前后对称设置有五个收缩软管腔,收缩软管腔处设置有定量选择机构,定量选择机构能够选择所需固定使用的燃气量,收缩软管腔内设置有收缩软管,收缩软管腔左端固定设置有气管,中间气管与输气总管之间通过中间收缩软管连接,能够定量使用,且能够实时记录燃气的使用量,而且能够仅使用定量燃气,不会启动燃气输入。(The invention discloses energy-saving gas equipment for quantitative use, which comprises a box body, wherein a gas storage tank cavity is arranged in the box body, a gas storage tank is arranged in the gas storage tank cavity, an automatic rotating gas on-off mechanism is arranged at the top end of the gas storage tank, the automatic rotating gas on-off mechanism can manually select whether to continuously convey gas or not and can automatically control to convey quantitative gas, a gas conveying pipe is fixedly connected to the upper end of the gas storage tank, the right end of the gas conveying pipe is hermetically connected with a gas conveying main pipe, five contracting hose cavities are symmetrically arranged at the front and back of the left end of the gas conveying main pipe, a quantitative selection mechanism is arranged at the contracting hose cavity and can select the gas quantity required to be fixedly used, a contracting hose is arranged in each contracting hose cavity, a gas pipe is fixedly arranged at the left end of each contracting hose cavity, and, and the use amount of the fuel gas can be recorded in real time, and only quantitative fuel gas can be used without starting fuel gas input.)

1. The utility model provides an energy-saving gas equipment that ration was used, includes the box, its characterized in that: a gas storage tank cavity is arranged in the box body, a gas storage tank is arranged in the gas storage tank cavity, an automatic rotary gas on-off mechanism is arranged at the top end of the gas storage tank, the automatic rotary gas on-off mechanism can manually select whether to continuously convey gas or not and can automatically control to convey quantitative gas, a gas pipe is fixedly connected to the upper end of the gas storage tank, the right end of the gas pipe is hermetically connected with a gas main pipe, five contracting hose cavities are symmetrically arranged at the front and back of the left end of the gas main pipe, a quantitative selection mechanism is arranged at the contracting hose cavity and can select the gas quantity required to be fixedly used, a contracting hose is arranged in the contracting hose cavity, a gas pipe is fixedly arranged at the left end of the contracting hose cavity, and the gas pipe is connected with the gas main pipe through the contracting hose in the middle, all the other the trachea with the gas transmission is in charge of through all the other shrink hose fixed connection, and is adjacent the gas transmission house steward with the gas transmission is in charge of between the first connecting pipe of fixedly connected with, and is adjacent fixedly connected with second connecting pipe between the gas transmission is in charge of, the trachea left end is fixed and is provided with the gas jar, sliding connection has the gas jar piston in the gas jar, gas jar piston left end face with through first spring coupling between the gas jar, gas jar rear end right-hand member face is provided with the left slide bar spout of opening, sliding connection has the slide bar in the slide bar spout, the slide bar right-hand member with through second spring coupling between the slide bar spout, the slide bar right-hand member is fixed and is provided with the metal block, the circuit between right side electro-magnet and its power and between left electro-magnet and its power can be connected.

2. The energy-saving gas equipment for quantitative use according to claim 1, wherein: middle gas cylinder piston and air feed house steward right-hand member fixed connection, all the other gas cylinder piston and air feed branch pipe right-hand member fixed connection, adjacent air feed house steward with fixedly connected with third connecting pipe between the branch pipe of air feed is adjacent fixedly connected with fourth connecting pipe between the branch pipe of air feed, air feed house steward left end sets up outside the device and is connected with the gas apparatus of using, the fixed ascending air vent of opening that is provided with of gas cylinder left end top wall, the gas cylinder left side is provided with gas quantity record mechanism.

3. The energy-saving gas equipment for quantitative use according to claim 1, wherein: automatic rotatory break-make gas mechanism including set up in the valve on gas holding vessel top, gas holding vessel chamber roof is provided with the logical groove that the opening is decurrent, lead to the groove can with valve sliding connection, it is provided with the ascending quantitative selection groove of opening to lead to the groove roof, quantitative selection groove top sealing connection has the quantitative selection piece, quantitative selection inslot sliding connection has rotatory piece, rotatory piece set up in quantitative selection piece downside, rotatory piece bottom surface with pass through torsional spring coupling between the quantitative selection groove, rotatory piece bottom surface is provided with the valve draw-in groove that the opening is decurrent, the valve draw-in groove is connected with the valve chucking that is located it.

4. The energy-saving gas-fired appliance for quantitative use according to claim 3, wherein: the side ring wall of the rotating block is uniformly and fixedly provided with four clamping blocks, the side wall of the quantitative selection groove is provided with a gear ring groove with an opening facing the valve, a gear ring is arranged in the gear ring groove, the top wall of the gear ring is uniformly provided with four clamping block clamping grooves with upward openings, the clamping block clamping grooves are in sliding connection with the clamping blocks, the bottom surfaces of the clamping blocks are connected with the clamping block clamping grooves through a third spring, the upper end surface and the lower end surface of the gear ring are symmetrically and fixedly provided with a supporting rotating ring, the upper end wall and the lower end wall of the gear ring groove are symmetrically provided with annular grooves with openings facing the gear ring, the annular grooves are in rotating connection with the supporting rotating ring, the top wall of the gear ring groove is provided with a clamping block sliding groove with a downward opening and positioned at the upper side of, the rack is located in the rack groove and is connected with the rack groove in a sliding mode, the right end face of the rack is connected with the rack groove through a fourth spring, the right electromagnet is arranged on the right end wall of the rack groove, and the left electromagnet is arranged on the left end wall of the rack groove.

5. The energy-saving gas equipment for quantitative use according to claim 1, wherein: the quantitative selection mechanism comprises a pressing block sliding groove arranged at the position of the contracting hose cavity and with an upward opening, a front pressing block sliding connection and a rear pressing block sliding connection are arranged in the pressing block sliding groove and located on the front side and the rear side of the contracting hose, the pressing block is far away from the end face of the contracting hose and connected with the pressing block sliding groove through a fifth spring, a front threaded hole and a rear threaded hole which are communicated are arranged at the top end of the pressing block, the front threaded hole and the rear threaded hole are connected with a screw rod in a threaded mode, a nut is symmetrically and threadedly connected with the front portion and the.

6. The energy-saving gas-fired appliance for quantitative use according to claim 2, wherein: the gas consumption recording mechanism comprises a cylinder cavity arranged on the left side of the gas cylinder, a piston is connected in the cylinder cavity in a sliding manner, the right end face of the piston is connected with the cylinder cavity through a sixth spring, a metering slide bar is fixedly arranged on the right end face of the piston, the right end of the metering slide bar is positioned in the gas cylinder, a vent pipe with an upward opening is fixedly arranged on the top wall of the right end of the cylinder cavity, an air inlet pipe with an upward opening is fixedly arranged on the left end of the cylinder cavity, a one-way valve is arranged in the air inlet pipe, an inflation pipe positioned on the lower side of the air inlet pipe is fixedly arranged on the left end of the cylinder cavity, a one-way valve is arranged in the inflation pipe, the left end of the inflation pipe is fixedly connected with a folding telescopic air bag, the folding telescopic, the foldable telescopic air bag is characterized in that a scalar slide block is connected in the scalar cavity in a sliding mode, an exhaust pipe is fixedly connected to the left end of the foldable telescopic air bag, and an air pipe plug is connected to the left end of the exhaust pipe in a sealing mode.

7. The energy-saving gas-fired appliance for quantitative use according to claim 4, wherein: the volume of the gas cylinder on the front side is larger than that of the gas cylinder on the rear side, five metal blocks can be connected with a series circuit between the right electromagnet and a power supply thereof, the series circuit between the right electromagnet and the power supply thereof is provided with a time delay disconnecting device, so that the right electromagnet is ensured to be always connected within a period of time after being connected, the right electromagnet is ensured to be disconnected after the gas cylinder is completely filled with gas, and the five metal blocks can be connected with a parallel circuit between the left electromagnet and the power supply thereof.

8. The quantitatively usable energy saving gas burning apparatus according to claim 6, wherein: the gas supply main pipe can not convey gas when the gas appliance is not used, and the transparent scalar column is made of transparent materials and is marked with usage scale.

Technical Field

The invention relates to the related technical field of gas equipment, in particular to energy-saving gas equipment for quantitative use.

Background

The gas equipment and pipe network are important facilities for ensuring reliable gas supply in cities, and the gas equipment and pipe network are used for conveying combustible media and are distributed at multiple points, so that the gas equipment and pipe network relate to gas supply of thousands of households. The gas equipment and the pipe network are distributed in each position of the city, and the coverage is wide.

The existing stage of gas equipment cannot be used quantitatively, is easy to cause waste due to continuous and uninterrupted use, cannot know the use amount of gas, cannot only use quantitative gas, and needs to be noticed by personnel all the time.

Disclosure of Invention

Aiming at the technical defects, the invention provides energy-saving gas equipment for quantitative use, which can overcome the defects.

The invention relates to energy-saving gas equipment for quantitative use, which comprises a box body, wherein a gas storage tank cavity is arranged in the box body, a gas storage tank is arranged in the gas storage tank cavity, an automatic rotating gas on-off mechanism is arranged at the top end of the gas storage tank, the automatic rotating gas on-off mechanism can manually select whether to continuously convey gas or not and can automatically control and convey quantitative gas, a gas conveying pipe is fixedly connected to the upper end of the gas storage tank, the right end of the gas conveying pipe is hermetically connected with a gas conveying main pipe, five contracting hose cavities are symmetrically arranged at the front and back of the left end of the gas conveying main pipe, a quantitative selection mechanism is arranged at the contracting hose cavity and can select the gas quantity required to be fixedly used, a contracting hose is arranged in the contracting hose cavity, a gas pipe is fixedly arranged at the left end of the contracting hose cavity, and the middle gas pipe is connected with the, all the other the trachea with the gas transmission is in charge of through all the other shrink hose fixed connection, and is adjacent the gas transmission house steward with the gas transmission is in charge of between the first connecting pipe of fixedly connected with, and is adjacent fixedly connected with second connecting pipe between the gas transmission is in charge of, the trachea left end is fixed and is provided with the gas jar, sliding connection has the gas jar piston in the gas jar, gas jar piston left end face with through first spring coupling between the gas jar, gas jar rear end right-hand member face is provided with the left slide bar spout of opening, sliding connection has the slide bar in the slide bar spout, the slide bar right-hand member with through second spring coupling between the slide bar spout, the slide bar right-hand member is fixed and is provided with the metal block, the circuit between right side electro-magnet and its power and between left electro-magnet and its power can be connected.

Preferably, in the middle of the gas cylinder piston with supply gas house steward right-hand member fixed connection, all the other the gas cylinder piston with supply gas and be in charge of right-hand member fixed connection, adjacent supply gas house steward with fixedly connected with third connecting pipe between the branch pipe supplies gas, adjacent fixedly connected with fourth connecting pipe between the branch pipe supplies gas, supply gas house steward left end sets up outside the device and is connected with the gas apparatus of using, the fixed ascending air vent of opening that is provided with of gas cylinder left end top wall, the gas cylinder left side is provided with gas quantity record mechanism.

Preferably, autogiration break-make gas mechanism including set up in the valve on gas holding vessel top, gas holding vessel chamber roof is provided with the decurrent logical groove of opening, lead to the groove can with valve sliding connection, it is provided with the ascending quantitative selection groove of opening to lead to the groove roof, quantitative selection groove top sealing connection has the quantitative selection piece, quantitative selection inslot sliding connection has rotatory piece, rotatory piece set up in the quantitative selection piece downside, rotatory piece bottom surface with pass through torsional spring coupling between the quantitative selection groove, rotatory piece bottom surface is provided with the valve clamping groove that opens decurrent, the valve clamping groove is connected with the valve chucking that is located it.

Preferably, four clamping blocks are uniformly and fixedly arranged on the side ring wall of the rotating block, the side wall of the quantitative selection groove is provided with a gear ring groove with an opening facing the valve, a gear ring is arranged in the gear ring groove, the top wall of the gear ring is uniformly provided with four clamping block clamping grooves with upward openings, the clamping block clamping grooves are in sliding connection with the clamping blocks, the bottom surfaces of the clamping blocks are connected with the clamping block clamping grooves through a third spring, the upper end surface and the lower end surface of the gear ring are symmetrically and fixedly provided with a supporting rotating ring, the upper end wall and the lower end wall of the gear ring are symmetrically provided with annular grooves with openings facing the gear ring, the annular grooves are in rotating connection with the supporting rotating ring, the top wall of the gear ring groove is provided with a clamping block sliding groove with downward openings and positioned at the upper side of the clamping block, the rack is located in the rack groove and is connected with the rack groove in a sliding mode, the right end face of the rack is connected with the rack groove through a fourth spring, the right electromagnet is arranged on the right end wall of the rack groove, and the left electromagnet is arranged on the left end wall of the rack groove.

Preferably, the quantitative selection mechanism comprises a pressing block sliding groove which is arranged at the cavity of the contraction hose and has an upward opening, pressing blocks which are located on the front side and the rear side of the contraction hose are symmetrically and slidably connected with each other in the pressing block sliding groove in a front-back mode, the pressing block is far away from the end face of the contraction hose and is connected with the pressing block sliding groove through a fifth spring, a threaded hole which is communicated with the front side and the rear side is formed in the top end of the pressing block, the threaded hole is connected with a threaded rod in a front-back mode, nuts are symmetrically and threadedly connected with the front side and the.

Preferably, the gas usage recording mechanism comprises a cylinder cavity arranged on the left side of the gas cylinder, a piston is connected in the cylinder cavity in a sliding manner, the right end face of the piston is connected with the cylinder cavity through a sixth spring, a metering slide bar is fixedly arranged on the right end face of the piston, the right end of the metering slide bar is positioned in the gas cylinder, a vent pipe with an upward opening is fixedly arranged on the top wall of the right end of the cylinder cavity, an air inlet pipe with an upward opening is fixedly arranged on the left end of the cylinder cavity, a one-way valve is arranged in the air inlet pipe, an inflation pipe positioned on the lower side of the air inlet pipe is fixedly arranged on the left end of the cylinder cavity, a one-way valve is arranged in the inflation pipe, the left end of the inflation pipe is fixedly connected with a folding telescopic airbag, the folding telescopic airbag is, the foldable telescopic air bag is characterized in that a scalar slide block is connected in the scalar cavity in a sliding mode, an exhaust pipe is fixedly connected to the left end of the foldable telescopic air bag, and an air pipe plug is connected to the left end of the exhaust pipe in a sealing mode.

Preferably, the volume of the gas cylinder on the front side is larger than that of the gas cylinder on the rear side, five metal blocks can be connected with a series circuit between the right electromagnet and a power supply thereof, the series circuit between the right electromagnet and the power supply thereof is provided with a time delay disconnection device, so that the right electromagnet is ensured to be always connected within a period of time after being connected, and the right electromagnet is ensured to be disconnected after the gas cylinder is completely filled with gas, and the five metal blocks can be connected with a parallel circuit between the left electromagnet and the power supply thereof.

Preferably, the gas supply main pipe does not supply gas when the gas appliance is not used, and the transparent scalar column is made of transparent materials and is marked with usage scale marks.

The beneficial effects are that: the device can be used quantitatively, reduces the amount of waste gas, can record the amount of used gas in real time, is convenient for a user to control the amount of used gas, can only use the quantitative gas, does not start gas input, does not need to pay attention to the gas constantly, improves the safety of gas use, can automatically select the amount of used gas quantitatively, and is convenient for different use requirements, wherein the automatic rotating gas on-off mechanism can manually select whether to continuously convey the gas and can automatically control to convey the quantitative gas, and the quantitative selection mechanism can select the amount of used gas which needs to be fixedly used.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a quantitative energy-saving gas burning device of the present invention;

FIG. 2 is a partial schematic view of A-A of FIG. 1 according to an embodiment of the present invention;

FIG. 3 is a schematic view of B-B in FIG. 1 according to an embodiment of the present invention;

FIG. 4 is a schematic view of C-C in FIG. 1 according to an embodiment of the present invention.

Detailed Description

All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.

The invention will now be described in detail with reference to fig. 1-4, for convenience of description, the following orientations will now be defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to energy-saving gas equipment for quantitative use, which comprises a box body 10, wherein a gas storage tank cavity 17 is arranged in the box body 10, a gas storage tank 16 is arranged in the gas storage tank cavity 17, an automatic rotary gas on-off mechanism is arranged at the top end of the gas storage tank 16, the automatic rotary gas on-off mechanism can manually select whether to continuously convey gas or not and can automatically control and convey quantitative gas, a gas conveying pipe 53 is fixedly connected to the upper end of the gas storage tank 16, the right end of the gas conveying pipe 53 is hermetically connected with a gas conveying main pipe 54, five contracting soft pipe cavities 56 are symmetrically arranged at the front and back of the left end of the gas conveying main pipe 54, a quantitative selection mechanism is arranged at the contracting soft pipe cavities 56, the quantitative selection mechanism can select the gas quantity required to be fixedly used, contracting soft pipes 55 are arranged in the contracting soft pipe cavities 56, gas pipes 62 are fixedly, the middle gas pipe 62 is connected with the gas transmission main pipe 54 through the middle shrinkage hose 55, the rest gas pipes 62 are fixedly connected with the gas transmission branch pipes 63 through the rest shrinkage hoses 55, a first connecting pipe 67 is fixedly connected between the adjacent gas transmission main pipe 54 and the gas transmission branch pipes 63, a second connecting pipe 52 is fixedly connected between the adjacent gas transmission branch pipes 63, a gas cylinder 61 is fixedly arranged at the left end of the gas pipe 62, a gas cylinder piston 57 is connected in the gas cylinder 61 in a sliding manner, the left end surface of the gas cylinder piston 57 is connected with the gas cylinder 61 through a first spring 58, a slide bar chute 50 with a leftward opening is arranged at the right end surface of the rear end of the gas cylinder 61, a slide bar 44 is connected in the slide bar chute 50 in a sliding manner, the right end surface of the slide bar 44 is connected with the slide bar chute 50 through a second spring 43, and a metal block 69 is fixedly arranged at the right end of the, the metal block 69 can connect the circuits between the right electromagnet 48 and its power supply and between the left electromagnet 51 and its power supply.

Beneficially, the gas cylinder piston 57 is fixedly connected with the right end of the gas supply main pipe 60 in the middle, the other gas cylinder pistons 57 are fixedly connected with the right ends of the gas supply branch pipes 64, a third connecting pipe 59 is fixedly connected between the adjacent gas supply main pipe 60 and the gas supply branch pipes 64, a fourth connecting pipe 68 is fixedly connected between the adjacent gas supply branch pipes 64, the left end of the gas supply main pipe 60 is arranged outside the device and connected with a gas using appliance, the top wall of the left end of the gas cylinder 61 is fixedly provided with a vent hole 30 with an upward opening, and the left side of the gas cylinder 61 is provided with a gas usage recording mechanism.

Beneficially, the automatic rotatory break-make gas mechanism includes set up in the valve 19 on gas holding vessel 16 top, gas holding vessel chamber 17 roof is provided with the downward logical groove 65 of opening, logical groove 65 can with valve 19 sliding connection, logical groove 65 roof is provided with the ascending quantitative selection groove 66 of opening, quantitative selection groove 66 top sealing connection has quantitative selection piece 25, sliding connection has rotatory piece 24 in quantitative selection groove 66, rotatory piece 24 set up in quantitative selection piece 25 downside, rotatory piece 24 bottom surface with connect through torsional spring 18 between the quantitative selection groove 66, rotatory piece 24 bottom surface is provided with the downward valve draw-in groove 15 of opening, valve draw-in groove 15 is connected with the valve 19 chucking that is located it.

Advantageously, four fixture blocks 22 are uniformly and fixedly arranged on the side wall of the rotating block 24, the side wall of the quantitative selection groove 66 is provided with a gear ring groove 23 opening towards the valve 19, a gear ring 20 is arranged in the gear ring groove 23, the top wall of the gear ring 20 is uniformly provided with four fixture block clamping grooves 70 opening upwards, the fixture block clamping grooves 70 are slidably connected with the fixture blocks 22, the bottom surfaces of the fixture blocks 22 are connected with the fixture block clamping grooves 70 through a third spring 21, the upper end surface and the lower end surface of the gear ring 20 are symmetrically and fixedly provided with a supporting rotating ring 28, the upper end wall and the lower end wall of the gear ring 23 are symmetrically provided with annular grooves 27 opening towards the gear ring 20, the annular grooves 27 are rotatably connected with the supporting rotating ring 28, the top wall of the gear ring groove 23 is provided with fixture block sliding grooves 26 opening downwards and located at the upper side of the fixture, the gear ring 20 is engaged with the rack 45 located at the rear side thereof, the rack 45 is located in the rack groove 46 and is slidably connected therewith, the right end surface of the rack 45 is connected with the rack groove 46 through a fourth spring 47, the right electromagnet 48 is arranged at the right end wall of the rack groove 46, and the left electromagnet 51 is arranged at the left end wall of the rack groove 46.

Advantageously, the quantitative selection mechanism comprises a pressing block sliding groove 40 which is arranged at the contracting hose cavity 56 and is opened upwards, pressing blocks 39 which are positioned at the front side and the rear side of the contracting hose 55 are connected in the pressing block sliding groove 40 in a sliding mode in a front-back symmetrical mode, the end face, far away from the contracting hose 55, of each pressing block 39 is connected with the pressing block sliding groove 40 through a fifth spring 41, a threaded hole 42 which is communicated in a front-back mode is formed in the top end of each pressing block 39, the front-back threaded hole 42 is in threaded connection with a screw rod 37, a nut 38 is connected in a front-back symmetrical threaded connection with the screw rod 37, and the nut 38 is positioned.

Beneficially, the gas usage recording mechanism comprises a cylinder cavity 13 arranged on the left side of the gas cylinder 61, a piston 14 is slidably connected in the cylinder cavity 13, the right end face of the piston 14 is connected with the cylinder cavity 13 through a sixth spring 31, a metering slide bar 29 is fixedly arranged on the right end face of the piston 14, the right end of the metering slide bar 29 is positioned in the gas cylinder 61, a vent pipe 32 with an upward opening is fixedly arranged on the top wall of the right end of the cylinder cavity 13, an air inlet pipe 33 with an upward opening is fixedly arranged on the left end of the cylinder cavity 13, a one-way valve is arranged in the air inlet pipe 33, an inflation pipe 12 positioned on the lower side of the air inlet pipe 33 is fixedly arranged on the left end of the cylinder cavity 13, a one-way valve is arranged in the inflation pipe 12, the left end of the inflation pipe 12 is, the folding telescopic air bag comprises a box body 10, a scalar cavity 35, a scalar sliding block 36, an exhaust pipe 72 and an air pipe plug 71, wherein the scalar cavity 35 is arranged in a transparent scalar column 34, the transparent scalar column 34 is fixedly connected with the box body 10, the scalar cavity 35 is connected with the scalar sliding block 36 in a sliding mode, the left end of the folding telescopic air bag 11 is fixedly connected with the exhaust pipe 72, and the left end of the exhaust pipe 72.

Advantageously, the volume of the gas cylinder 61 on the front side is larger than that of the gas cylinder 61 on the rear side, five metal blocks 69 can be connected with a series circuit between the right electromagnet 48 and a power supply thereof, a time-delay disconnection device 49 is arranged on the series circuit between the right electromagnet 48 and the power supply thereof, the right electromagnet 48 is ensured to be always connected within a period of time after the right electromagnet 48 is connected, and therefore the right electromagnet 48 is ensured to be disconnected after the gas cylinder 61 is completely filled, and five metal blocks 69 can be connected with a parallel circuit between the left electromagnet 51 and the power supply thereof.

Advantageously, the gas supply manifold 60 does not supply gas when the gas appliance is not in use, and the transparent scalar column 34 is transparent and is marked with usage scale.

In the initial state, the torsion spring 18, the second spring 43 and the third spring 21 are in a compressed state, the first spring 58, the fourth spring 47 and the sixth spring 31 are in a normal stretched state, and the fifth spring 41 is in a stretched state;

sequence of mechanical actions of the whole device:

1. when gas needs to be used, the nut 38 corresponding to the required capacity is unscrewed, so that the pressing block 39 moves back to the contraction hose 55 under the reset action of the fifth spring 41, the gas transmission main pipe 54 corresponding to the required capacity, the contraction hose 55 and the gas pipe 62 are ventilated, the gas cylinder piston 57 corresponding to the required capacity moves to the rightmost end position, so that the sliding rod 44 corresponding to the required capacity moves to the rightmost end position, so that the metal block 69 corresponding to the required capacity and the rest four metal blocks 69 at the rightmost end position are connected with a series circuit between the right electromagnet 48 and a power supply thereof together, so that the right electromagnet 48 is switched on, the time delay disconnecting device 49 stores electricity, so that the rack 45 moves rightwards under the attraction force of the right electromagnet 48, so that the gear ring 20 rotates, the clamping block 22 and the rotating block 24 rotate, so that the valve 19 rotates, and the gas storage tank 16 conveys the gas outwards through the gas pipe 53, so that the gas cylinder piston 57 corresponding to the required capacity moves leftwards, the right electromagnet 48 is switched on for a period of time under the action of the time delay switching-off device 49 and then is switched off, the gas cylinder piston 57 corresponding to the required capacity moves to the left end position, the slide rod 44 corresponding to the required capacity moves leftwards under the reset action of the second spring 43 corresponding to the required capacity, the metal block 69 corresponding to the required capacity is connected with a parallel circuit between the left electromagnet 51 and a power supply thereof, the left electromagnet 51 is switched on, the rack 45 moves leftwards under the attraction force of the left electromagnet 51, the gear ring 20 is reversed, the fixture block 22 and the rotary block 24 are reversed, the valve 19 is reversed, and the gas storage tank 16 stops delivering gas outwards through the gas pipe 53, starting the gas appliance so that the gas supply main pipe 60 outputs the gas introduced into the gas cylinder 61 with the required volume;

2. the gas cylinder piston 57 moves leftwards to push the metering slide rod 29 corresponding to the required volume to move leftwards, so that the piston 14 corresponding to the required volume moves leftwards, the gas in the cylinder cavity 13 corresponding to the required volume enters the folding telescopic air bag 11 through the inflation pipe 12, the scalar slide block 36 rises, and the scale corresponding to the scalar slide block 36 displays the used gas quantity;

1. when the gas appliance is used, the combustion area in the gas cylinder 61 is discharged out of the device through the gas feeding branch pipe 64, the fourth connecting pipe 68, the third connecting pipe 59, the gas feeding main pipe 60 and other pipelines, so that the gas quantity in the space on the right side of the gas cylinder piston 57 corresponding to the required capacity is reduced, the gas cylinder piston 57 moves rightwards, the left electromagnet 51 is switched off, the gas cylinder piston 57 moves rightwards to the rightmost end, the slide rod 44 moves rightwards to the rightmost end, the metal block 69 corresponding to the required capacity and the rest four metal blocks 69 at the rightmost end positions are connected with a series circuit between the right electromagnet 48 and a power supply thereof together, the right electromagnet 48 is switched on, the time delay switching-off device 49 stores electricity, the rack 45 moves rightwards under the attraction force of the electromagnet 48, the gear ring 20 rotates, the quantitative selection block 25 presses the rotating block 24 and the fixture block 22 down to be connected with the fixture block slot 70 when the gas is continuously used, the clamping block 22 and the rotating block 24 are rotated, the valve 19 is rotated, the gas storage tank 16 is enabled to convey gas outwards through the gas pipe 53, the operation is repeated to continuously provide gas with required volume, and when only single gas with required volume is used, the quantitative selection block 25 is upwards taken out, so that the rotating block 24 and the clamping block 22 move upwards under the reset action of the torsion spring 18, the clamping block 22 is disconnected with the gear ring 20, the rotating block 24 and the clamping block 22 cannot rotate when the gear ring 20 rotates, the valve 19 is kept in a state of closing to convey the gas, the gas usage is fixed, the gas cannot be replenished after use, the redundant use of the gas is avoided, and the danger of gas use when a person leaves is reduced;

2. when the device needs to be reset, the quantitative selection block 25 is pressed downwards, the nuts 38 at the five positions are screwed down, the gas appliance is closed, the gas pipe plug 71 is taken down, gas in the folding and stretching air bag 11 is discharged through the exhaust pipe 72, so that the volume scale indicated by the scalar slide block 36 is reset to zero, the gas pipe plug 71 is screwed up, and the device is reset.

The above description is only an embodiment of the invention, but the scope of the invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the invention. Therefore, the protection scope of the invention should be subject to the protection scope defined by the claims.