Device having emergency locking function for fuel gas leakage

Abstract

The present invention relates to the technical field of gas storage containers, and specifically relates to a device having an emergency locking function for fuel gas leakage. The device comprises an annular connecting frame, a limiting mounting frame, an electric motor, a connecting sleeve, a transmission sleeve, a one-way transmission assembly and a reset assembly, wherein the annular connecting frame is coaxial with a cylinder body and is fixedly mounted above the cylinder body; an annular groove is formed on an upper end of the annular connecting frame; two barrier sheets are circumferentially arranged at an equal interval in the annular groove, and divide the annular groove into two semi-grooves which are not in communication with each other; and the limiting mounting frame is coaxial with the cylinder body and is mounted above a rotary valve of the cylinder body. In the present invention, by means of transmission cooperation of the connecting sleeve, the transmission sleeve and the one-way transmission assembly, the opening or closing of the rotary valve is directly controlled, such that it is not necessary to disassemble or assemble a pipeline; thus, the safety and reliability are both higher.

Description

Device with gas leakage emergency locking function TECHNICAL FIELD

[0001] The present application relates to the technical field of gas storage containers, in particular to a device with gas leakage emergency locking function. BACKGROUND

[0002] The gas cylinder, also known as gas tank, is a kind of gas storage container, mainly used in outdoor catering field, such as the common snack stalls on the roadside. If the bottle is not operated properly, it may cause fire or explosion and other safety accidents, so the bottle needs to be equipped with a leakage blocking device to close the valve of the bottle in time when an unexpected leakage occurs to prevent further leakage.

[0003] The existing bottle leakage blocking device is mostly an electric valve installed on the gas pipeline. When the gas concentration alarm detects gas leakage, it triggers the electric valve to act and close the gas pipeline. This gas shut-off device needs to disassemble the pipeline, which may become a new gas leakage point if not handled properly. SUMMARY

[0004] Therefore, it is necessary to provide a device with gas leakage emergency locking function to solve the problem of the existing bottle leakage blocking device.

[0005] The above-mentioned purpose is achieved by the following technical scheme:

[0006] A device with gas leakage emergency locking function is installed on the bottle of a gas cylinder, comprising:

[0007] An annular connecting frame is coaxially fixedly installed above the rotating valve of the bottle, an annular groove is formed at the upper end of the annular connecting frame, and two blocking pieces are arranged at equal intervals in the circumferential direction in the annular groove, which separates the annular groove into two half grooves that are not connected to each other;

[0008] A limiting mounting frame is rotatably connected at both ends to the two half grooves;

[0009] A motor is fixedly installed on the limiting mounting frame, and the output shaft of the motor is coaxial with the rotating valve of the bottle;

[0010] A connecting sleeve is coaxially fixedly connected with the rotating valve of the bottle;

[0011] A transmission sleeve is coaxially sleeved with the connecting sleeve, and the transmission sleeve and the connecting sleeve can rotate synchronously and move relative to each other along the axis of the transmission sleeve;

[0012] The transmission sleeve is coaxially sleeved with the output shaft of the motor, and the transmission sleeve and the output shaft of the motor can synchronously rotate and relatively move along the axis of the transmission sleeve.

[0013] The one-way transmission assembly is arranged between the transmission sleeve and the limiting mounting frame, and the one-way transmission assembly is configured to drive the limiting mounting frame to synchronously rotate through the one-way transmission assembly when the transmission sleeve rotates counterclockwise.

[0014] In one of the embodiments, the one-way transmission assembly includes a ratchet wheel, an extension plate and a ratchet tooth, the ratchet wheel is coaxially fixed to the upper portion of the transmission sleeve, the extension plate is arranged at the lower end of the limiting mounting frame, the ratchet tooth is rotationally connected to the extension plate, a connecting spring is arranged between the ratchet tooth and the extension plate, and the ratchet tooth is configured to be blocked by the ratchet wheel when the ratchet wheel rotates counterclockwise.

[0015] In one of the embodiments, two manual handles are circumferentially and equidistantly arranged at the upper end of the ratchet wheel, and the manual handles extend outward along the radial direction of the ratchet wheel.

[0016] In one of the embodiments, the extension plate is further provided with a reset assembly, and the reset assembly is used to reset the relative position relationship between the limiting mounting frame and the rotary valve after the output end of the motor rotates and the rotary valve of the combustion bottle is closed.

[0017] In one of the embodiments, the reset assembly includes an inclined block and a side block, the extension plate is provided with a mounting cavity, the extension plate is provided with a first slot opening toward the center of the annular connecting frame, the inclined block is slidingly connected in the first slot, the mounting cavity is provided with a first tension spring, one end of the first tension spring away from the mounting cavity is fixedly connected with the inclined block, the side of the inclined block is provided with a second slot, and the side block is slidingly connected in the second slot, the side block and the inclined block abut, and when the side block moves into the mounting cavity, the side block pushes the inclined block to slide into the mounting cavity.

[0018] The side block can abut the manual handle.

[0019] In one of the embodiments, the annular connecting frame and the bottle body are provided with a connecting assembly, and the connecting assembly is used to coaxially and fixedly install the annular connecting frame above the bottle body.

[0020] In one of the embodiments, the connecting assembly includes a rotating disc, a sliding column, a clamping rod and a limiting frame, the rotating disc is coaxially and rotationally connected in the annular connecting frame, the rotating disc can rotate around its axis, the upper end surface of the rotating disc is circumferentially and equidistantly provided with a plurality of arc-shaped waist grooves, the sliding column is slidingly connected in the arc-shaped waist grooves, the lower end of the sliding column is fixedly connected with the clamping rod, the limiting frame is arranged at the lower end of the annular connecting frame, and the clamping rod is slidingly connected with the limiting frame, so that the clamping rod can move along the radial direction of the rotating disc.

[0021] In one of the embodiments, the inner side of the clamping rod is provided with a side clamping block.

[0022] In one of the embodiments, a connecting hole is formed on the side of the clamping rod below the side clamping block, and a bottom clamping block is arranged in the connecting hole.

[0023] In one of the embodiments, a threaded groove is formed on the annular connecting frame, the threaded groove penetrates through the annular connecting frame, a lead screw is threadedly connected in the threaded groove, a threaded sliding block is threadedly connected with the lead screw, a guide sliding groove is formed on the rotating disc, and a rotating block is rotatably connected to the lower end of the threaded sliding block and is slidingly connected in the guide sliding groove.

[0024] The present application has the following advantages:

[0025] The present application is provided with a limiting mounting frame, a motor, a connecting sleeve, a transmission sleeve, a one-way transmission assembly and a reset assembly, the limiting mounting frame is coaxially mounted above the rotary valve of the bottle body, and through the transmission cooperation of the connecting sleeve, the transmission sleeve and the one-way transmission assembly, the opening or closing of the rotary valve is directly controlled, so that the pipeline does not need to be disassembled, the safety and reliability are higher, and in addition, the motor only works in the case of gas leakage, in the normal use state, the rotary valve can be manually opened or closed by rotating the limiting mounting frame or the transmission sleeve, which is more suitable for the outdoor working environment of the bottle body. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a whole schematic view of the device with the gas leakage emergency locking function;

[0027] Fig. 2 is a structure schematic view of the one-way transmission assembly and the reset assembly of the device with the gas leakage emergency locking function;

[0028] Fig. 3 is a sectional view of the device with the gas leakage emergency locking function;

[0029] Fig. 4 is an enlarged view of the upper structure of Fig. 3;

[0030] Fig. 5 is an exploded view of the device with the gas leakage emergency locking function;

[0031] Fig. 6 is a structure view of the limiting mounting frame in the device with the gas leakage emergency locking function;

[0032] Fig. 7 is a schematic view of the structure enlarged at A in Fig. 6;

[0033] Fig. 8 is a structure view of the inclined block and the side block in the device with the gas leakage emergency locking function;

[0034] Figure 9 is a structural diagram of the limit mounting bracket in a device with emergency interlocking function for gas leakage according to the present invention.

[0035] Figure 10 is a front view of a device with an emergency interlock function for gas leakage according to the present invention;

[0036] Figure 11 is a cross-sectional view along line B in Figure 10;

[0037] Figure 12 is a magnified schematic diagram of the structure at point C in Figure 11.

[0038] in:

[0039] 100. Annular connecting frame; 110. Blocking plate; 120. Half groove; 130. Threaded groove; 140. Lead screw; 150. Threaded slider; 160. Rotating block; 200. Limiting mounting bracket; 300. Motor; 410. Connecting sleeve; 420. Transmission sleeve; 500. One-way transmission assembly; 510. Ratchet; 520. Racket tooth; 530. Extension plate; 531. Mounting cavity; 532. First slot; 533. 534. First tension spring; 545. Second groove; 546. Manual handle; 600. Reset assembly; 610. Inclined stop block; 620. Side stop block; 700. Connecting assembly; 710. Rotating disk; 720. Sliding column; 730. Clamping rod; 731. Connecting hole; 740. Limiting frame; 750. Arc-shaped waist groove; 760. Side clamping block; 770. Bottom clamping block; 780. Guide groove; 1000. Bottle body. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0041] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0042] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or just means that the first feature is higher than the second feature in horizontal height. The first feature is "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or just means that the first feature is lower than the second feature in horizontal height.

[0043] As shown in FIGS. 1-12, a device with a gas leakage emergency locking function is installed on the bottle body of a gas cylinder, which comprises a ring-shaped connecting frame 100, a limiting mounting frame 200, a motor 300, a connecting sleeve 410 and a transmission sleeve 420. The ring-shaped connecting frame 100 is coaxially fixedly installed above the bottle body, and a ring-shaped groove is formed in the upper end of the ring-shaped connecting frame 100. Two blocking pieces 110 are arranged in the ring-shaped groove at equal intervals in the circumferential direction, and the blocking pieces 110 separate the ring-shaped groove into two half grooves 120 that are not connected to each other. The two ends of the limiting mounting frame 200 are rotatably connected in the two half grooves 120, respectively. The motor 300 is fixedly installed on the limiting mounting frame 200, and the output shaft of the motor 300 is coaxial with the rotating valve of the bottle body 1000. The connecting sleeve 410 is fixedly connected with the rotating valve of the bottle body 1000 in a coaxial manner. The transmission sleeve 420 is coaxially sleeved with the connecting sleeve 410, and the transmission sleeve 420 and the connecting sleeve 410 can synchronously rotate and relatively move along the axis of the transmission sleeve 420. The transmission sleeve 420 is also coaxially sleeved with the output shaft of the motor 300, and the transmission sleeve 420 and the output shaft of the motor 300 can synchronously rotate and relatively move along the axis of the transmission sleeve 420. A one-way transmission assembly 500 is arranged between the transmission sleeve 420 and the limiting mounting frame 200, and the one-way transmission assembly 500 is configured such that when the transmission sleeve 420 rotates counterclockwise, the limiting mounting frame 200 can be driven to synchronously rotate counterclockwise through the one-way transmission assembly 500.

[0044] In the normal use state of the combustion bottle, when it is necessary to open the rotating valve of the bottle body 1000, the staff rotates the transmission sleeve 420 counterclockwise, the transmission sleeve 420 drives the connecting sleeve 410 to synchronously rotate, the connecting sleeve 410 drives the rotating valve of the bottle body 1000 to synchronously rotate, and at the same time, the transmission sleeve 420 drives the limiting mounting frame 200 to synchronously rotate counterclockwise through the one-way transmission assembly 500. When the two ends of the limiting mounting frame 200 rotate to abut against the blocking pieces 110, the rotating valve is counterclockwise rotated to an angle of one hundred and eighty degrees, and the rotating valve is completely opened.

[0045] When the valve of the bottle 1000 needs to be closed in the normal use state, the staff rotates the limiting mounting frame 200 clockwise, the limiting mounting frame 200 drives the transmission sleeve 420 to rotate clockwise through the one-way transmission assembly 500, the transmission sleeve 420 drives the connecting sleeve 410 to rotate clockwise, the connecting sleeve 410 drives the rotating valve to rotate clockwise, when the limiting mounting frame 200 rotates clockwise to abut against the blocking piece 110 on the opposite side, it indicates that the rotating valve has rotated one hundred and eighty degrees clockwise at this time, and the rotating valve is completely closed.

[0046] In the abnormal state, when the rotating valve is in the open state, if the gas concentration alarm alarms, the gas concentration alarm sends an electrical signal to the motor 300, the output shaft of the motor 300 rotates clockwise, the rotation of the motor 300 makes the limiting mounting frame 200 rotate counterclockwise relative to the output shaft of the motor 300 to abut against the blocking piece 110, and then with the continuous rotation of the motor 300, the output shaft of the motor 300 drives the transmission sleeve 420 to rotate clockwise, the transmission sleeve 420 drives the connecting sleeve 410 to rotate clockwise, the connecting sleeve 410 drives the rotating valve to rotate clockwise, thereby closing the rotating valve. Compared with the existing gas shutoff device, the device does not need to disassemble the pipeline when installing, but directly controls the rotation state of the rotating valve, and has higher safety and reliability.

[0047] It should be noted that the connection between the connecting sleeve 410 and the transmission sleeve 420, and the transmission sleeve 420 and the output shaft of the motor 300 is driven by a spline structure, so that the two can rotate synchronously and move relatively along the axis of the transmission sleeve 420.

[0048] It should be further noted that the thickness of the blocking piece 110 should be as small as possible, so that the angle of clockwise rotation or counterclockwise rotation of the limiting mounting frame 200 is approximately equal to one hundred and eighty degrees.

[0049] It should be further noted that the gas concentration alarm in the device can be arranged on the bottle body 1000 to detect the gas concentration around the bottle 1000, and the gas concentration alarm is signal connected with the motor 300.

[0050] It should be further noted that the lower surface of both ends of the limiting mounting frame 200 is provided with a sliding guide column, which is slidingly connected in the half groove 120, so as to realize the rotation connection of both ends of the limiting mounting frame 200 in the two half grooves 120 respectively.

[0051] In further embodiments, as shown in FIG. 5 and FIG. 6, the one-way transmission assembly 500 includes a ratchet wheel 510, an extension plate 530 and a ratchet tooth 520, the ratchet wheel 510 is coaxially fixed on the upper part of the transmission sleeve 420, the extension plate 530 is arranged at the lower end of the limiting mounting frame 200, the ratchet tooth 520 is rotationally connected to the extension plate 530, and a connecting spring (not shown in the figure) is arranged between the ratchet tooth 520 and the extension plate 530, and the ratchet tooth 520 is configured to be blocked by the ratchet wheel 510 when the ratchet wheel 510 rotates counterclockwise.

[0052] When the rotating valve is normally opened, the transmission sleeve 420 is rotated counterclockwise, the transmission sleeve 420 drives the connecting sleeve 410 to rotate counterclockwise, the connecting sleeve 410 drives the rotating valve to rotate counterclockwise, thereby opening the valve, at the same time, the transmission sleeve 420 drives the ratchet wheel 510 to rotate counterclockwise, the ratchet wheel 510 drives the extension plate 530 to rotate counterclockwise through the ratchet tooth 520, and the extension plate 530 drives the limiting mounting frame 200 to rotate counterclockwise.

[0053] When the rotating valve is normally closed, the staff rotates the limiting mounting frame 200 clockwise, the limiting mounting frame 200 drives the extension plate 530 to rotate clockwise, the extension plate 530 drives the ratchet tooth 520 to rotate clockwise, the ratchet tooth 520 drives the ratchet wheel 510 to rotate clockwise, the ratchet wheel 510 drives the transmission sleeve 420 to rotate clockwise, the transmission sleeve 420 drives the connecting sleeve 410 to rotate clockwise, and the connecting sleeve 410 drives the rotating valve of the bottle body 1000 to rotate clockwise, thereby closing the rotating valve.

[0054] When the gas concentration alarm sends an electric signal to the motor 300, the motor 300 rotates clockwise, the rotation of the motor 300 first drives the limiting mounting frame 200 to rotate clockwise until the limiting mounting frame 200 abuts against the blocking piece 110, and then with the continuous rotation of the motor 300, the motor 300 drives the transmission sleeve 420 to rotate, the transmission sleeve 420 drives the connecting sleeve 410 to rotate clockwise, and the connecting sleeve 410 drives the rotating valve to rotate clockwise, thereby closing the rotating valve, and since the ratchet tooth 520 is configured to be blocked by the ratchet wheel 510 when the ratchet wheel 510 rotates counterclockwise, when the transmission sleeve 420 rotates clockwise, the transmission sleeve 420 drives the ratchet wheel 510 to rotate clockwise, the clockwise rotation of the ratchet wheel 510 drives the ratchet tooth 520 to rotate away from the ratchet wheel 510, thereby compressing the connecting spring, so that the ratchet wheel 510 and the transmission sleeve 420 can rotate clockwise to close the rotating valve.

[0055] The bottle body 1000 in the device can only be automatically started when the gas leaks, and under normal circumstances, the rotating valve can be opened or closed in a manual form, so it is more suitable for outdoor working environment.

[0056] In a further embodiment, as shown in FIG. 6, two manual handles 540 are arranged equidistantly and circumferentially on the upper end of the ratchet 510, and the manual handles 540 extend outwardly along the radial direction of the ratchet 510.

[0057] In order to facilitate the rotation of the transmission sleeve 420 by the staff, the manual handles 540 are arranged, and when it is necessary to rotate the transmission sleeve 420, the staff can hold the manual handles 540 to drive the transmission sleeve 420 to rotate.

[0058] In a further embodiment, as shown in FIG. 6, the extension plate 530 is further provided with a reset assembly 600, which is used to reset the relative position relationship between the limiting mounting frame 200 and the rotary valve of the bottle body 1000 after the rotary valve of the combustion bottle 1000 is closed by the rotation of the motor 300.

[0059] When the rotary valve is closed by the rotation of the motor 300, the position of the limiting mounting frame 200 is at the position when the rotary valve is normally opened, so the position of the limiting mounting frame 200 is not synchronized with the position when the rotary valve is normally closed, and the transmission sleeve 420 is always rotated synchronously with the rotary valve, so it is necessary to reset the relative position relationship between the limiting mounting frame 200 and the rotary valve of the bottle body 1000 by the reset assembly 600.

[0060] In a further embodiment, as shown in FIGS. 7, 8 and 12, the reset assembly 600 includes an inclined block 610 and a side block 620, the extension plate 530 is provided with a mounting cavity 531, the extension plate 530 is provided with a first notch 532 towards the center of the annular connecting frame 100, the inclined block 610 is slidingly connected in the first notch 532, the mounting cavity 531 is provided with a first tension spring 533, one end of the first tension spring 533 away from the mounting cavity 531 is fixedly connected with the inclined block 610, the side surface of the inclined block 610 is provided with a second notch 534, the side block 620 is slidingly connected in the second notch 534, and the side block 620 abuts against the inclined block 610, when the side block 620 moves towards the mounting cavity 531, the side block 620 pushes the inclined block 610 to make the inclined block 610 slide towards the mounting cavity 531, and the side block 620 can abut against the manual handle 540.

[0061] When resetting, the worker pulls the transmission sleeve 420 along the axis of the transmission sleeve 420 upward, so that the transmission sleeve 420 is disengaged from the connection sleeve 410, at the same time, the ratchet wheel 510 and the ratchet tooth 520 are disengaged from the stop cooperation, at this time the ratchet wheel 510 is above the inclined block 610, then rotate the transmission sleeve 420 clockwise, the transmission sleeve 420 drives the limiting mounting frame 200 to rotate clockwise through the manual handle 540 fixedly connected thereon, when the limiting mounting frame 200 rotates clockwise to the position where it abuts against the blocking piece 110, continue to rotate the transmission sleeve 420 clockwise, which will make the manual handle 540 exert pressure on the side block 620, so that the side block 620 moves into the installation cavity 531, the side block 620 pushes the inclined block 610 through the inclined surface, so that the inclined block 610 also moves into the installation cavity 531, the first tension spring 533 is gradually stretched, when the inclined block 610 moves to the position where it no longer blocks the downward movement of the transmission sleeve 420, the transmission sleeve 420 moves downward to the position where the transmission sleeve 420 is connected with the connection sleeve 410, at the same time, the ratchet wheel 510 and the ratchet tooth 520 are also in the position where they can cooperate with the stop, at this time the limiting mounting frame 200 is in the clockwise rotation limit position (i.e. the position where the rotating valve is completely closed), and the rotating valve is also in the closed state, then rotate the limiting mounting frame 200 counterclockwise, which can open the rotating valve of the bottle body 1000.

[0062] In further embodiments, as shown in Figure 3, a connecting assembly 700 is provided between the annular connecting frame 100 and the bottle body 1000, which is used to coaxially and fixedly install the annular connecting frame 100 above the bottle body 1000.

[0063] In further embodiments, as shown in Figure 5, the connecting assembly 700 includes a rotating disc 710, a sliding column 720, a clamping rod 730 and a limiting frame 740, the rotating disc 710 is coaxially and rotatably connected in the annular connecting frame 100, the rotating disc 710 can rotate around its axis, a plurality of arc-shaped waist grooves 750 are equidistantly arranged on the upper end surface of the rotating disc 710, the sliding column 720 is slidably connected in the arc-shaped waist groove 750, the lower end of the sliding column 720 is fixedly connected with the clamping rod 730, and the limiting frame 740 is arranged at the lower end of the annular connecting frame 100, the clamping rod 730 is slidably connected with the limiting frame 740, so that the clamping rod 730 can move along the radial direction of the rotating disc 710.

[0064] When it is needed to coaxially and fixedly install the annular connecting frame 100 above the bottle body 1000, the worker drives the rotating disc 710 to drive the clamping rod 730 to move towards the axis of the bottle body 1000 through the sliding cooperation of the arc-shaped waist groove 750 and the sliding column 720, so that the annular connecting frame 100 is fixedly connected with the bottle body 1000, thus it can adapt to bottle bodies 1000 of different sizes.

[0065] In a further embodiment, as shown in FIG. 5, the inner side of the clamping rod 730 is provided with a side clamping block 760, which is a rubber block, and the side clamping block 760 is arranged to increase the clamping force between the side clamping block 760 and the bottle body 1000.

[0066] In a further embodiment, as shown in FIG. 5, a connecting hole 731 is formed on the side of the clamping rod 730 below the side clamping block 760, and a bottom clamping block 770 is arranged in the connecting hole 731.

[0067] The bottom clamping block 770 is arranged to increase the clamping force between the bottom clamping block 770 and the bottle body 1000, and further enhance the connection stability between the clamping rod 730 and the bottle body 1000.

[0068] In a further embodiment, as shown in FIG. 5, a threaded groove 130 is formed in the annular connecting frame 100, the threaded groove 130 penetrates the annular connecting frame 100, a lead screw 140 is threadedly connected in the threaded groove 130, a threaded sliding block 150 is threadedly connected with the lead screw 140, a guide sliding groove 780 is formed in the rotating disc 710, a rotating block 160 is rotatably connected at the lower end of the threaded sliding block 150, and the rotating block 160 is slidably connected in the guide sliding groove 780.

[0069] When the rotating disc 710 needs to be rotated, the staff rotates the lead screw 140 to drive the threaded sliding block 150 to move the rotating block 160 along the guide sliding groove 780 towards the center of the rotating disc 710, thereby driving the rotating disc 710 to rotate, and further driving the clamping rod 730 to move towards the center of the bottle body 1000, so that the clamping rod 730 can be fixed on the bottle body 1000.

[0070] The technical features of the above embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0071] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A device having a gas leakage emergency shut-off function, installed on a bottle body of a gas cylinder, characterized in that, The utility model relates to a bottle body, which comprises: a ring-shaped connecting frame coaxially fixedly installed above a rotary valve of the bottle body, an upper end of the ring-shaped connecting frame being provided with a ring-shaped groove, two blocking pieces being equidistantly arranged in the circumferential direction in the ring-shaped groove, and the blocking pieces separating the ring-shaped groove into two half grooves that are not connected to each other; a limiting mounting frame, two ends of the limiting mounting frame being rotatably connected in the two half grooves, respectively; a motor, the motor being fixedly installed on the limiting mounting frame, and an output shaft of the motor being coaxial with the rotary valve of the bottle body; a connecting sleeve, the connecting sleeve being coaxially fixedly connected with the rotary valve of the bottle body; a transmission sleeve, the transmission sleeve being coaxially sleeved with the connecting sleeve, and the transmission sleeve and the connecting sleeve being capable of synchronous rotation and relative movement along the axis of the transmission sleeve; the transmission sleeve is also coaxially sleeved with the output shaft of the motor, and the transmission sleeve and the output shaft of the motor are capable of synchronous rotation and relative movement along the axis of the transmission sleeve; a one-way transmission assembly is arranged between the transmission sleeve and the limiting mounting frame, the one-way transmission assembly is configured to drive the limiting mounting frame to synchronously rotate through the one-way transmission assembly when the transmission sleeve rotates counterclockwise, the one-way transmission assembly comprises a ratchet wheel, an extension plate and a ratchet tooth, the ratchet wheel is coaxially fixedly connected to the upper portion of the transmission sleeve, the extension plate is arranged at the lower end of the limiting mounting frame, the ratchet tooth is rotatably connected to the extension plate, a connecting spring is arranged between the ratchet tooth and the extension plate, the ratchet tooth is configured to be blocked by the ratchet wheel when the ratchet wheel rotates counterclockwise, two manual handles are equidistantly arranged in the circumferential direction at the upper end of the ratchet wheel, and the manual handles extend outward along the radial direction of the ratchet wheel; 2. The device with gas leakage emergency shut-off function according to claim 1, characterized in that, a reset assembly is further arranged on the extension plate, the reset assembly is used for resetting the relative position relationship between the limiting mounting frame and the rotary valve after the output end of the motor rotates and the rotary valve of the combustion bottle is closed, the reset assembly comprises an inclined block and a side block, an installation cavity is arranged in the extension plate, a first slot is arranged in the direction of the center of the ring-shaped connecting frame, the inclined block is slidably connected in the first slot, a first tension spring is arranged in the installation cavity, one end of the first tension spring away from the installation cavity is fixedly connected with the inclined block, a second slot is arranged in the side surface of the inclined block, the side block is slidably connected in the second slot, the side block abuts against the inclined block, and when the side block moves into the installation cavity, the side block pushes the inclined block to slide into the installation cavity; 3. A device with gas leakage emergency shut-off function according to claim 2, characterized in that, the side block can abut against the manual handle.

4. The device with gas leakage emergency shut-off function according to claim 3, characterized in that, a connecting assembly is arranged between the ring-shaped connecting frame and the bottle body, and the connecting assembly is used for coaxially and fixedly installing the ring-shaped connecting frame above the bottle body.

5. A device with gas leakage emergency shut-off function according to claim 4, characterized in that, the connecting assembly comprises a rotary disc, a sliding column, a clamping rod and a limiting frame, the rotary disc is coaxially and rotatably connected in the ring-shaped connecting frame, the rotary disc can rotate around its axis, a plurality of arc waist grooves are equidistantly arranged in the circumferential direction at the upper end surface of the rotary disc, the sliding column is slidably connected in the arc waist groove, the lower end of the sliding column is fixedly connected with the clamping rod, the limiting frame is arranged at the lower end of the ring-shaped connecting frame, and the clamping rod is slidably connected with the limiting frame, so that the clamping rod can move along the radial direction of the rotary disc. a side clamping block is arranged on the inner side of the clamping rod. a connecting hole is arranged on the side of the clamping rod and below the side clamping block, and a bottom clamping block is arranged in the connecting hole.

6. The device with gas leakage emergency shut-off function according to claim 3, characterized in that, The threaded groove is provided on the annular connecting frame and penetrates the annular connecting frame, a lead screw is threadedly connected in the threaded groove, a threaded sliding block is threadedly connected to the lead screw, a guide sliding groove is provided on the rotating disc, and a rotating block is rotatably connected to the lower end of the threaded sliding block and is slidingly connected in the guide sliding groove.

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