Gas cylinder airtightness detection device

Abstract

The utility model discloses a gas cylinder airtightness detection device, comprising a detection pool filled with detection water; the at least two partition plates are vertically arranged in the detection pool in parallel, the two opposite side end faces of each partition plate are seamlessly fixed to the inner wall of the detection pool, and a channel is reserved between the lower end of each partition plate and the bottom of the detection pool; the partition plates divide the detection pool into a water inlet area, a detection area and a water outlet area; the upper end of the partition plate is positioned above the liquid level of the detection water; the detection visual system is arranged above the detection pool and is used for sampling and recording the detection area; the detection conveying belt enters the detection pool through a guide mechanism, penetrates through the channel and then is led out of the detection pool; the plurality of conveying pieces are arranged on the detection conveying belt along the length of the detection conveying belt; and a plurality of cage-type detection accommodating parts which are arranged on the detection conveying belt in a one-to-one correspondence manner with the conveying parts and are used for accommodating gas cylinders to be detected. According to the utility model, continuous detection can be realized, the detection efficiency is improved, and the detection difficulty is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a gas cylinder detection field, concretely relates to a gas cylinder airtightness detection device. BACKGROUND

[0002] The high-pressure cylinder is a kind of common pressure vessel, and the high-pressure cylinder is needed for fire extinguisher, is used to contain high-pressure gas, so the airtightness of the gas cylinder needs to be detected before and after injecting high-pressure gas into the high-pressure cylinder.

[0003] The conventional gas cylinder airtightness detection has bubble method, pressure drop method, differential pressure method, flow method, suction gun method and vacuum chamber method etc.Bubble method is simple and direct, uses most, and bubble method can be divided into immersion method (it is suitable for the airtight test of the whole or local gas cylinder) and coating liquid method (it is suitable for the airtight test of the connecting part of the bottle valve screw thread of the test gas cylinder, the valve rod of bottle valve, the gas outlet of bottle valve, fusible plug or gas cylinder welding joint etc.).Immersion method is more matched for the high requirement of fire extinguishing equipment, so it is most commonly used, and the test flow of immersion method is that the whole test gas cylinder is immersed in water tank (the highest point of gas cylinder is greater than or equal to 5cm from water surface), pressure is maintained for at least 1min, and whether there is bubble escaping is visually inspected, if continuous bubble or fixed position bubble appears after bubble is wiped off, then it is judged as unqualified.

[0004] The current gas cylinder detection all adopts single independent detection, cannot realize large-batch continuous detection, and seriously restricts the production capacity and production efficiency of enterprise. UTILITY MODEL CONTENT

[0005] In view of the above defects of prior art, the purpose of the utility model is to provide a gas cylinder airtightness detection device, which can realize continuous detection, improve detection efficiency and reduce detection difficulty.

[0006] The purpose of the utility model is realized by the following technical scheme:

[0007] A gas cylinder airtightness detection device, comprising:

[0008] A detection pool is filled with detection water inside;

[0009] At least two partitions are vertically arranged in parallel in the detection pool, the two opposite end faces of the partition are seamlessly fixed with the inner wall of the detection pool, and a channel is left between the lower end of the partition and the bottom of the detection pool;The partition divides the detection pool into a water inlet area, a detection area and a water outlet area;The upper end of the partition is above the detection water level;

[0010] A detection vision system is arranged above the detection pool and samples and records the detection area;

[0011] A detection conveyor belt enters the detection pool through a guide mechanism and is guided out of the detection pool after passing through the channel.

[0012] a plurality of conveying members arranged on the detection conveying belt along the length of the detection conveying belt;

[0013] a plurality of cage-shaped detection accommodating members arranged on the detection conveying belt one-to-one corresponding to the conveying members, and accommodating the gas cylinders to be detected inside.

[0014] Further, the detection conveying belt forms a plurality of functional positions through a plurality of guide mechanisms, and the plurality of functional positions along the ring shape of the detection conveying belt are in turn a bottle loading position, a water inlet position, a detection position, a water outlet position, a bottle unloading position, and a recovery position.

[0015] The bottle loading position is located at the head of the detection tank, the water inlet position is located at the water inlet area, the detection position is located at the detection area, the water outlet position is located at the water outlet area, the bottle unloading position is located at the tail of the detection tank, and the recovery position is located below the detection tank.

[0016] Further, the detection conveying belt is a chain plate type detection conveying belt, and the conveying members are arranged one-to-one on the outer surface of each chain plate of the detection conveying belt.

[0017] Further, the conveying member includes at least one clamping and pushing unit, and a plurality of clamping and pushing units are arranged in parallel.

[0018] Further, two lifting mechanisms are arranged directly above the bottle loading position and the bottle unloading position, respectively.

[0019] The limiting connecting piece includes:

[0020] The upper end surface of the push tooth is inclined, and the normal line of the upper end surface of the push tooth and the movement direction of the detection conveying belt form an acute angle.

[0021] The side limiting piece is arranged outside the push tooth.

[0022] The connecting seat includes,

[0023] The seat tooth has an inclined surface on the lower end surface matched with the push tooth and facing the push tooth, and the seat tooth and the push tooth are made of magnetic material and are magnetically attracted together.

[0024] The top limiting piece is located outside the seat tooth and limits the upward displacement of the seat tooth to keep the seat tooth facing the push tooth.

[0025] After the detection accommodating member abuts against the lifting mechanism, the detection accommodating member is lifted along the height direction of the seat tooth, and the seat tooth and the push tooth are separated.

[0026] Further, the side limiting piece includes:

[0027] Two limiting plates are arranged oppositely.

[0028] Two limiting lug plates are oppositely arranged on opposite surfaces of the two limiting plates; a gap is left between the two limiting lug plates; the seat tooth passes through the gap to contact the push tooth;

[0029] The top limiting member comprises two opposite limiting support plates, and upper plate surfaces of the two limiting support plates are opposite to lower plate surfaces of the limiting lug plates; when the detection accommodating member abuts against the lifting mechanism, the detection accommodating member is lifted along the height direction of the seat tooth, the seat tooth is separated from the push tooth, and a gap is left between the limiting support plates and the limiting lug plates.

[0030] Further, opposite two ends of the detection accommodating member are provided with lifting plates 72;

[0031] The lifting mechanism comprises:

[0032] Two side blocking units are oppositely arranged on the outer side of the detection conveying belt; the side blocking unit can block the detection accommodating member to force it to stop moving with the detection conveying belt or release the limitation on the detection accommodating member to make it move with the detection conveying belt;

[0033] Two supporting units are oppositely arranged on the outer side of the detection conveying belt; after the side blocking unit blocks the detection accommodating member, the supporting unit supports the lifting plate 72 of the detection accommodating member or separates from the lifting plate 72 to release the detection accommodating member.

[0034] Further, the side blocking unit comprises:

[0035] A blocking plate is arranged above the side of the detection conveying belt through a torsional spring hinge; a rotation shaft of the blocking plate is perpendicular to a plate surface of the detection conveying belt; the blocking plate interferes with the running detection accommodating member in a natural state;

[0036] A side blocking cylinder is arranged opposite to the blocking plate to control rotation of the blocking plate.

[0037] Further, the supporting unit comprises:

[0038] A supporting plate is arranged above the side of the detection conveying belt through a hinge;

[0039] A gravity block is arranged on a lower surface of the supporting plate; so that the supporting plate is separated from the lifting plate 72 in a natural state;

[0040] A supporting cylinder is arranged vertically downward; when the supporting cylinder is elongated, the supporting plate is rotated so that the supporting plate is located on a lower surface of the lifting plate 72.

[0041] Further, a front end of the lifting plate 72 is provided with an upper guide plate with an upwardly curved lower surface; a front end of the supporting plate is provided with a lower guide plate with a downwardly curved upper surface;

[0042] An inner surface of the detection accommodating member is made of an engineering plastic material.

[0043] Due to the adoption of the above technical solutions, the utility model has the following advantages:

[0044] 1, the detection pool is divided into water inlet area, detection area and water outlet area by the partition, the fluctuation of the water surface caused by the diffusion of the air bubbles when the gas cylinder enters and exits the detection pool is reduced as far as possible, the interference during the detection of the detection visual system is less, and the extremely small air bubbles can be detected and distinguished.

[0045] 2, the gas cylinder conveying adopts the structure of the detection conveying belt, realizes the detection of the continuous production line, and realizes the accommodation and limiting of the gas cylinder and drives the movement of the gas cylinder through the cooperation of the conveying part and the detection accommodating part.

[0046] Other advantages, objects and features of the utility model will be described in the subsequent description to some extent, and to some extent, it will be obvious to those skilled in the art based on the study of the following text or can be taught from the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0047] The drawings of the utility model are as follows:

[0048] Figure 1 It is the arrangement sectional view of the detection pool, the partition and the detection conveying belt in the embodiment.

[0049] Figure 2 It is the overhead structure schematic view of the bottle filling position in the embodiment.

[0050] Figure 3 It is Figure 2 The structure schematic view of A-A section in the embodiment.

[0051] Figure 4 It is Figure 3 The structure schematic view of B section in the embodiment.

[0052] Figure 5 It is Figure 4 The structure schematic view of C-C section in the embodiment.

[0053] Figure 6 It is Figure 3 The structure schematic view of D section in the embodiment.

[0054] Figure 7 It is Figure 6 The structure schematic view of E-E section in the embodiment.

[0055] In the figure: 1. detection pool; 11. water inlet area; 12. detection area; 13. water outlet area; 2. partition; 3. detection visual system; 5. detection conveying belt; 51. guide mechanism; 52. bottle loading position; 53. water inlet position; 54. detection position; 55. water outlet position; 56. bottle unloading position; 57. return position; 61. push tooth; 621. limiting plate; 622. limiting lug; 711. seat tooth; 712. limiting support plate; 72. lifting plate 72; 73. upper guide plate; 811. baffle; 812. torsional spring; 813. side baffle cylinder; 821. supporting plate; 822. gravity block; 823. supporting cylinder; 824. lower guide plate. DETAILED DESCRIPTION

[0056] The utility model will be further described below in combination with the drawings and examples.

[0057] Example:

[0058] As shown in the figure, a gas cylinder airtightness detection device comprises: Figures 1 to 7

[0059] A detection pool 1 is internally filled with detection water;

[0060] At least two partitions 2 are vertically arranged in parallel in the detection pool 1, the two opposite end faces of the partition 2 are seamlessly fixed with the inner wall of the detection pool 1, and a passage is left between the lower end of the partition 2 and the bottom of the detection pool 1; the partition 2 divides the detection pool 1 into a water inlet area 11, a detection area 12 and a water outlet area 13; the upper end of the partition 2 is located above the detection water level;

[0061] A detection visual system 3 is arranged above the detection pool 1 and samples and records the detection area 12; this set of systems adopts a very common image recognition system on the market, and only needs to set the corresponding presence or absence of bubbles as the judgment standard for the picture judgment;

[0062] A detection conveying belt 5 enters the detection pool 1 through a guide mechanism 51 and is guided out of the detection pool 1 after passing through the passage;

[0063] A plurality of conveying members are arranged on the detection conveying belt 5 along the length of the detection conveying belt 5;

[0064] A plurality of cage-type detection accommodating members are arranged on the detection conveying belt 5 one by one corresponding to the conveying members, and internally accommodate the gas cylinders to be detected.

[0065] ​The detection tank 1 is divided into the water inlet area 11, the detection area 12 and the water outlet area 13 by the partition 2, so as to reduce the fluctuation of the water surface caused by the air cylinder entering and leaving the detection tank 1, and the visual detection system 3 can detect the extremely small bubbles. The air cylinder is transported by the detection conveying belt 5, so as to realize the continuous production line detection, and the conveying part and the detection containing part are matched to contain and limit the air cylinder and drive the air cylinder to move.

[0066] In the embodiment, the detection conveying belt 5 is provided with a plurality of guide mechanisms 51, and the detection conveying belt 5 is provided with a plurality of functional positions, and the functional positions are sequentially arranged along the ring shape of the detection conveying belt 5, and the functional positions are a bottle loading position 52, a water inlet position 53, a detection position 54, a water outlet position 55, a bottle unloading position 56 and a recovery position 57.

[0067] The bottle loading position 52 is located at the head of the detection tank 1, the water inlet position 53 is located at the water inlet area 11, the detection position 54 is located at the detection area 12, the water outlet position 55 is located at the water outlet area 13, the bottle unloading position 56 is located at the tail of the detection tank 1, and the recovery position 57 is located below the detection tank 1.

[0068] The detection conveying belt 5 is a chain plate type detection conveying belt 5, and the conveying part is arranged on the outer surface of each chain plate of the detection conveying belt 5.

[0069] The guide mechanism 51 is a gear disc matched with the chain plate type conveying belt, and the whole is driven by a motor to move.

[0070] In the embodiment, the conveying part includes at least one clamping and pushing unit, and a plurality of clamping and pushing units are sequentially and parallelly arranged, the clamping and pushing unit includes a limiting connecting part, and the lower surface of the detection containing part is provided with a connecting seat connected with the limiting connecting part.

[0071] The two lifting mechanisms are arranged above the bottle loading position 52 and the bottle unloading position 56 respectively.

[0072] The limiting connecting part includes:

[0073] The push tooth 61 is inclined at the upper end surface, and the normal line of the upper end surface of the push tooth 61 and the movement direction of the detection conveying belt 5 form an acute angle.

[0074] The side limiting part is arranged outside the push tooth 61.

[0075] The connecting seat includes:

[0076] The seat tooth 711 is provided with an inclined surface matched with the push tooth 61 at the lower end surface, and faces the push tooth 61; the seat tooth 711 and the push tooth 61 are magnetic materials, and both are made of rubidium magnet, so as to realize the adsorption of the whole detection containing part without falling; and the seat tooth 711 and the push tooth 61 are magnetically attracted together.

[0077] A top limiting member is located outside the seat tooth 711 to limit the seat tooth 711 to keep facing the push tooth 61 and limit the upward displacement of the seat tooth 711.

[0078] After the detection accommodating member abuts against the lifting mechanism, the detection accommodating member is lifted along the height direction of the seat tooth 711, and the seat tooth 711 is separated from the push tooth 61.

[0079] The side limiting member comprises:

[0080] Two limiting plates 621 are oppositely arranged;

[0081] Two limiting ear plates 622 are oppositely arranged on opposite surfaces of the two limiting plates 621; a gap is left between the two limiting ear plates 622; the seat tooth 711 passes through the gap to contact the push tooth 61;

[0082] The top limiting member comprises two opposite limiting branch plates 712, and the upper plate surfaces of the two limiting branch plates 712 face the lower plate surfaces of the limiting ear plates 622; when the detection accommodating member abuts against the lifting mechanism, the detection accommodating member is lifted along the height direction of the seat tooth 711, and the seat tooth 711 is separated from the push tooth 61; a gap is left between the limiting branch plates 712 and the limiting ear plates 622.

[0083] Through the cooperation of the push tooth 61 and the seat tooth 711, when the detection accommodating member is located directly above the detection conveying belt 5, the push tooth 61 drives the seat tooth 711 to move due to its own gravity, thereby driving the detection accommodating member to move; when the detection accommodating member is located directly below the detection conveying belt 5, the limiting branch plates 712 and the limiting ear plates 622 are in contact with each other due to the gravity of the detection accommodating member, thereby generating a friction force, so that the detection conveying belt moves, and the detection accommodating member moves synchronously; when the detection accommodating member is at the water inlet level 53, the end surface of the seat tooth 711 will interfere with the push tooth 61 on the next chain plate, so that the detection accommodating member will not slide downward along the limiting plate 621; when the detection accommodating member is at the water inlet and outlet level 55, the seat tooth 711 and the push tooth 61 are magnetically attracted together to ensure that they are in line with the inclined surface; at this time, the push tooth 61 moves to drive the seat tooth 711 to move upward.

[0084] In this embodiment, opposite ends of the detection accommodating member are provided with lifting plates 72;

[0085] The lifting mechanism comprises:

[0086] Two side blocking units are oppositely arranged outside the detection conveying belt 5; the side blocking unit can push and block the detection accommodating member to force it to stop moving, or release the limitation on the detection accommodating member to make it move with the detection conveying belt 5;

[0087] Two supporting units are oppositely arranged on the outer side of the detection conveying belt 5. After the side blocking unit pushes and blocks the detection accommodating member, the supporting unit supports the detection accommodating member to separate the detection accommodating member from the detection conveying belt 5.

[0088] When the side blocking unit blocks the detection accommodating member, the detection accommodating member is forced to move upward under the action of the inclined surface of the pushing tooth 61 and the seat tooth 711, and is supported by the supporting unit, so that the detection accommodating member is separated from the detection conveying belt 5, and the gas cylinder is conveniently loaded into or taken out of the detection accommodating member.

[0089] In the embodiment, the side blocking unit comprises:

[0090] A blocking plate 811 is arranged above the side of the detection conveying belt 5 by a torsion spring 812, and the rotating shaft of the blocking plate 811 is perpendicular to the plate surface of the detection conveying belt 5; and the blocking plate 811 interferes with the running detection accommodating member in a natural state.

[0091] A side blocking cylinder 813 is arranged opposite to the blocking plate 811 to control the rotation of the blocking plate 811.

[0092] The position of the blocking plate 811 is controlled by the pushing and resetting of the side blocking cylinder 813, so that the blocking plate 811 interferes with or separates from the detection accommodating member.

[0093] In the embodiment, the supporting unit comprises:

[0094] A supporting plate 821 is arranged above the side of the detection conveying belt 5 by a torsion spring 812.

[0095] A gravity block 822 is arranged on the lower surface of the supporting plate 821; so that the supporting plate 821 is separated from the lifting plate 72 in a natural state.

[0096] A supporting cylinder 823 is arranged vertically downward, and is elongated to rotate the supporting plate 821, so that the supporting plate 821 is located on the lower surface of the lifting plate 72.

[0097] Under the action of the gravity of the gravity block 822, the supporting plate 821 rotates downward and is separated from the lifting plate 72; when lifting is needed, the supporting cylinder 823 is controlled to be elongated, so that the supporting plate 821 is in place and can support the lifting plate 72.

[0098] In the embodiment, the front end of the lifting plate 72 is provided with an upper guide plate 73 with an upwardly tilted lower surface; and the front end of the supporting plate 821 is provided with a lower guide plate 824 with a downwardly tilted upper surface.

[0099] The inner surface of the detection accommodating member is made of engineering plastic.

[0100] The upper guide plate 73 and the lower guide plate 824 can ensure that the lifting plate 72 can be smoothly placed on the supporting plate 821; the cage of the detection accommodating part adopts a side opening and closing structure, and is opened or closed by using a quick clamp, and the engineering plastic material can avoid scratching the surface of the gas cylinder.

[0101] The gas cylinder airtightness detection device of the embodiment is used in the following manner: the detection conveying belt 5 is started; at this time, the detection accommodating part moves along with the detection conveying belt 5, when a bottle needs to be loaded, the control side blocking cylinder 813 is elongated, so that the blocking plate 811 interferes with the detection accommodating part, and at the same time, the supporting cylinder 823 is elongated, so that the supporting plate 821 is in place, as shown in Fig. Figure 3 、 6 、7;

[0102] The detection accommodating part interferes with the blocking plate 811 under the driving of the detection conveying belt 5, and is forced to move upward along the guide of the upper guide plate 73 and the lower guide plate 824 under the action of the inclined surface of the seat tooth 711 and the pushing tooth 61, and finally falls on the supporting plate, and is separated from the detection conveying belt 5.

[0103] At this time, the worker opens the detection accommodating part and loads the gas cylinder. Similarly, the same operation can be performed when the gas cylinder is taken out.

[0104] When the gas cylinder is loaded, the control side blocking cylinder 813 is shortened, the blocking plate 811 rotates under the action of the torsion spring 812, the interference with the detection accommodating part is removed, the supporting cylinder 823 is controlled to be shortened, the supporting plate 821 rotates under the action of the gravity of the detection accommodating part and the gravity block 822, finally, the seat tooth 711 of the detection accommodating part is magnetically matched with the pushing tooth 61 on the detection conveying belt 5, and moves along with the detection conveying belt 5.

[0105] When the detection accommodating part in which the gas cylinder is placed reaches the detection area 12, the detection vision system 3 shoots the water surface of the detection area 12 in real time, and delivers the shot photo to the detection system for AI detection, to determine whether there is a bubble in the picture, if there is, the airtightness of the detected gas cylinder is problematic.

[0106] Finally, it should be explained that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A gas cylinder airtightness detection device characterized by comprising: The utility model relates to a kind of gas cylinder detection device, including: Detection pool, filled with detection water inside; At least two partitions, parallel and vertical in detection pool, two opposite side end surfaces of partition are seamlessly fixed with the inner wall of detection pool, and passage is left between the lower end of partition and the bottom of detection pool;The partition divides detection pool into water inlet area, detection area and water outlet area;The upper end of the partition is above the liquid level of detection water; Detection vision system, set above detection pool, sample record detection area; Detection conveying belt, enter detection pool through guide mechanism, guide out detection pool after passing through passage; A plurality of conveying pieces are arranged on the detection conveying belt along the length of the detection conveying belt; A plurality of cage type detection containers are arranged on the detection conveying belt one by one corresponding to the conveying pieces, and the inside contains the gas cylinder to be detected.

2. The gas cylinder airtightness detection device according to claim 1, characterized in that, The detection conveying belt forms a plurality of functional positions through a plurality of guide mechanisms, and a plurality of functional areas are sequentially arranged along the ring shape of the detection conveying belt as bottle loading position, water inlet position, detection position, water outlet position, bottle unloading position and recovery position. The bottle loading position is located at the head of the detection pool, the water inlet position is located in the water inlet area, the detection position is located in the detection area, the water outlet position is located in the water outlet area, the bottle unloading position is located at the tail of the detection pool, and the recovery position is located below the detection pool.

3. The gas cylinder airtightness detection device according to claim 2, characterized in that, The detection conveying belt is a chain plate type detection conveying belt, and the conveying pieces are arranged on the outer surface of each chain plate of the detection conveying belt one by one.

4. The gas cylinder airtightness detection device according to claim 2, characterized in that, The conveying piece includes at least one clamping and pushing unit, a plurality of clamping and pushing units are arranged in parallel one by one, the clamping and pushing unit includes a limiting connecting piece, and the lower surface of the detection container is provided with a connecting seat connected with the limiting connecting piece.

5. The gas cylinder airtightness detection device according to claim 4, characterized in that, It also includes two lifting mechanisms, which are respectively arranged directly above the bottle loading position and the bottle unloading position. The limiting connecting piece includes: A push tooth, the upper end surface of which is inclined, and the normal line of the upper end surface of the push tooth and the movement direction of the detection conveying belt form an acute angle. A side limiting piece is arranged outside the push tooth. The connecting seat includes: A seat tooth, the lower end surface of which is provided with an inclined surface matched with the push tooth and facing the push tooth, and the seat tooth and / or the push tooth are made of magnetic material and are attracted together. A top limiting piece is located outside the seat tooth to limit the seat tooth to keep facing the push tooth and limit the upward displacement of the seat tooth. When the detection container abuts against the lifting mechanism, the detection container is lifted along the height direction of the seat tooth, and the seat tooth is separated from the push tooth.

6. The gas cylinder airtightness detection device according to claim 5, characterized in that, The side limiting piece includes: Two limiting plates arranged opposite to each other. Two limiting ear plates are arranged opposite to each other on the opposite surfaces of the two limiting plates, and a gap is left between the two limiting ear plates. The seat tooth passes through the gap to contact the push tooth.

7. The gas cylinder airtightness detection device according to claim 5, characterized in that, The top limiting piece includes two opposite limiting support plates, and the upper plate surface of the two limiting support plates faces the lower plate surface of the limiting ear plate. When the detection container abuts against the lifting mechanism, the detection container is lifted along the height direction of the seat tooth, the seat tooth is separated from the push tooth, and a gap is left between the limiting support plate and the limiting ear plate. The opposite ends of the detection container are provided with lifting plates 72. The lifting mechanism includes: Two side blocking units are arranged opposite to each other outside the detection conveying belt. The side blocking unit can push and block the detection container to force it to stop moving with the detection conveying belt or release the limitation on the detection container to make it move with the detection conveying belt. Two supporting units are oppositely arranged on the outer side of the detection conveying belt. After the side blocking unit pushes and blocks the detection container, the supporting lifting plate 72 detects the detection container or separates from the lifting plate 72 to release the detection container.

8. The gas cylinder airtightness detection device according to claim 7, characterized in that, The side blocking unit comprises: A blocking plate is arranged above the side of the detection conveying belt through a torsional spring hinge. The rotation shaft of the blocking plate is perpendicular to the plate surface of the detection conveying belt. The blocking plate interferes with the running detection container in the natural state. A side blocking cylinder is arranged opposite to the blocking plate to control the rotation of the blocking plate.

9. The gas cylinder airtightness detection device according to claim 7, characterized in that, The supporting unit comprises: A supporting plate is arranged above the side of the detection conveying belt through a hinge. A gravity block is arranged on the lower surface of the supporting plate. The supporting plate is separated from the lifting plate 72 in the natural state. A supporting cylinder is arranged vertically downward. When the supporting cylinder is elongated, the supporting plate is rotated to be located on the lower surface of the lifting plate 72.

10. The gas cylinder airtightness detection device according to claim 9, characterized in that, The front end of the lifting plate 72 is provided with an upper guide plate with the lower surface upwardly tilted. The front end of the supporting plate is provided with a lower guide plate with the upper surface downwardly tilted. The inner surface of the detection container is made of engineering plastic.

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