Gas cylinder airtightness detection device

Abstract

The utility model discloses a gas cylinder airtightness detection device. The device comprises a detection frame, a left side clamping mechanism, a right side clamping mechanism and a gas injection mechanism. Each of the left side clamping mechanism and the right side clamping mechanism comprises two symmetrically arranged stroke holes; the upper end and the lower end of the clamping piece are installed in the two stroke holes in a sliding mode respectively, and a clamping groove is formed in the inner side of the clamping piece; the first spring is located in a stroke hole in the top of the detection frame; the gas injection mechanism comprises a gas injection pipe and a driving assembly, a baffle and a transmission frame are installed on the circumferential outer wall of the gas injection pipe, the baffle is connected with the top of the detection frame through a second spring, two transmission columns are installed on the transmission frame, and each of the two transmission columns can abut against the inner side of the corresponding clamping piece in an up-down sliding mode and stretch the first spring. And each of the two transmission columns is in sliding fit with the corresponding clamping groove. According to the gas cylinder airtightness detection device, gas injection work and gas cylinder clamping work can be realized at the same time.

Description

Technical Field

[0001] The utility model generally relates to the technical field of air tightness detection, and more specifically, relates to an air tightness detection device for a gas cylinder. Background Art

[0002] Gas cylinders are usually used as special equipment (such as fire extinguishers). Since gas cylinders used as special equipment have high requirements for their own air tightness, a detection device is required to detect the air tightness of the gas cylinders during the production process. In order to avoid the impact force generated by the instantaneous gas injection causing the gas cylinder to shake before the gas injection test, the existing gas cylinder air tightness detection device usually uses a clamping structure to fix the gas cylinder. However, since the clamping work and the gas injection work of the gas cylinder are usually carried out in steps, this reduces the convenience and work efficiency of the detection device.

[0003] Therefore, how to provide a gas cylinder air tightness detection device that can realize the gas injection work and the gas cylinder clamping work at the same time is a problem that needs to be solved urgently by those skilled in the art. Utility Model Content

[0004] In view of this, the utility model provides a gas cylinder air tightness detection device, which can automatically clamp the gas cylinder to be inspected during the gas injection process, so that the gas injection work and the gas cylinder clamping work are completed together.

[0005] To achieve the above-mentioned purpose, the utility model provides a gas cylinder air tightness detection device, which includes a detection frame, a left clamping mechanism, a right clamping mechanism and a gas injection mechanism, wherein: the detection frame is provided with an internal space for placing the gas cylinder to be detected; the left clamping mechanism and the right clamping mechanism are symmetrically arranged, and are respectively located on the left and right sides of the internal space, each of the left clamping mechanism and the right clamping mechanism includes: two symmetrically arranged travel holes, the two travel holes are respectively opened at the top and bottom of the detection frame; a clamping member, the upper and lower ends of the clamping member are respectively slidably installed in the two travel holes, and a clamping groove is opened on the inner side of the clamping member; and a first spring, the first spring is located in the travel hole at the top of the detection frame, and one end of the first spring is installed on the inner side of the clamping member, the first spring The other end is installed in the inner wall of the travel hole of the top of the detection frame; the gas injection mechanism includes an injection pipe and a driving assembly for driving the injection pipe to rise and fall, the injection pipe can slidably pass through the top of the detection frame, the upper and lower ends of the injection pipe are respectively used to connect an external gas supply device and the gas cylinder to be inspected. The circumferential outer wall of the injection pipe is equipped with a baffle and a transmission frame, the baffle is connected to the top of the detection frame through a second spring, the transmission frame is located under the baffle and is equipped with two transmission columns, each of the two transmission columns can slide up and down to abut against the inner side of the clamping piece of a corresponding one of the left clamping mechanism and the right clamping mechanism and stretch the first spring, and each of the two transmission columns slidably cooperates with the corresponding clamping groove to slide into the clamping groove during the descent of the injection pipe.

[0006] Optionally, a clamping plate is installed on the inner side of the clamping member.

[0007] Optionally, the clamping groove includes a connected oblique groove and a vertical groove, and during the descending process of the air injection pipe, the transmission column first slides into the corresponding oblique groove, and then slides from the corresponding oblique groove into the corresponding vertical groove.

[0008] Optionally, the gas cylinder air tightness detection device also includes a gas injection control mechanism, which includes a connecting pipe and a hollow docking joint; wherein: the connecting pipe is inserted into the top of the detection frame, the upper end of the connecting pipe is used to connect with the external gas supply equipment, and the internal space of the connecting pipe is divided into a connecting chamber at the upper part and a guide chamber at the lower part by a partition installed therein; the partition forms a sealing cylinder at the upper part of the guide chamber through a sealing plate extending downward, and an air inlet channel is formed between the sealing plate and the inner wall of the connecting pipe, the partition is provided with a connecting hole at a position corresponding to the air inlet channel, and the connecting chamber is connected with the air inlet channel through the connecting hole; the upper part of the docking joint can be slidably sealed in the sealing cylinder in the natural state of the gas cylinder air tightness detection device, and an air inlet is provided, the lower part of the docking joint is sealed and installed in the gas injection pipe, and the docking joint is connected with the gas injection pipe.

[0009] Optionally, the gas injection tube is slidably installed in the guide cavity in the natural state.

[0010] Optionally, the driving assembly includes a follower rack, a support frame, a driving gear shaft, a driving gear and an operating rod; wherein: the follower rack is installed on the front side of the gas injection tube; the support frame is installed on the front side of the detection frame; the driving gear shaft is rotatably installed on the support frame; the driving gear is installed on the driving gear shaft and meshes with the follower rack; the operating rod is connected to the driving gear shaft.

[0011] Optionally, there are two support frames, the outer end of each of the two support frames is mounted on the front side of the detection frame via a fastener, and the inner end of each of the two support frames is rotatably connected to a corresponding end of the driving gear shaft via a bearing.

[0012] Optionally, a flexible grip tube is installed at the free end of the operating rod.

[0013] Optionally, both the first spring and the second spring are tension springs; one end of the first spring is embedded in the inner side of the clamping member, and the other end of the first spring is embedded in the inner wall of the travel hole at the top of the detection frame; the top end of the second spring is embedded in the top of the detection frame, and the bottom end of the second spring is embedded in the top of the baffle.

[0014] Optionally, there are two second springs, and the two second springs are symmetrically arranged relative to the gas injection pipe.

[0015] Compared with the prior art, the gas cylinder air tightness detection device provided by the utility model has the following beneficial effects:

[0016] (1) Compared with the gas cylinder air tightness detection device in the prior art which needs to perform the gas injection work and the gas cylinder clamping work in steps, the gas cylinder air tightness detection device provided by the utility model can automatically drive the clamping parts of the left clamping mechanism and the right clamping mechanism to move inwards to clamp the gas cylinder to be inspected under the action of the contraction force of the first spring during the working process of the gas injection pipe descending and docking with the gas cylinder to be inspected to inject gas into the gas cylinder to be inspected, so that the gas injection work and the gas cylinder clamping work are realized at the same time, thereby ensuring the stability of the gas cylinder to be inspected during the air tightness detection, and not reducing the operating convenience and work efficiency of the detection device due to the step-by-step gas injection work and the gas cylinder clamping work.

[0017] (2) The gas cylinder air tightness detection device provided by the utility model adopts a new type of clamping device different from the prior art, which includes a left clamping mechanism and a right clamping mechanism respectively located on the left and right sides of the gas cylinder to be detected. Under the action of the contraction force (inward movement force) of the first spring (preferably a tension spring), when the gas injection pipe moves downward with the transmission frame and the transmission column, the transmission column will preferentially contact and push the inclined groove in the clamping groove to slide into the inclined groove, and then use the inclined structure of the inclined groove to slide into the vertical groove, thereby transmitting the contraction force of the first spring to the clamping member, so as to drive the clamping members on the left and right sides to move inward and contact and clamp the gas cylinder to be detected. The clamping effect is good, which avoids the impact force generated at the moment of gas release during the gas injection detection, causing the gas cylinder to be detected to shake, thereby causing unnecessary trouble to the gas cylinder air tightness detection.

[0018] (3) The gas cylinder air tightness detection device provided by the utility model is provided with a gas injection control mechanism, which can seal the butt joint in the natural state of the gas cylinder air tightness detection device to prevent gas from flowing into the gas injection pipe through the cooperation of the connecting pipe and the butt joint, and in the process of the gas injection pipe descending to dock with the gas cylinder to be inspected, the butt joint can be automatically driven to descend with the descent of the gas injection pipe to extract the gas inlet of the butt joint from the sealing tube, so that the gas is injected into the butt joint through the gas inlet, and further injected into the gas injection pipe and the gas cylinder to be inspected. Therefore, the gas injection control mechanism can flexibly cut off and conduct the gas according to the needs of gas injection, so that the gas injection process is reasonably controlled, which is convenient for flexible gas tightness detection.

[0019] (4) The drive assembly of the gas cylinder air tightness detection device provided by the utility model is reasonably arranged. Only by lifting the operating lever, the active gear and the follower rack can drive the gas injection pipe to descend to dock with the gas cylinder to be inspected for gas injection, thereby automatically clamping the gas cylinder to be inspected during the gas injection process. Therefore, only by using the drive assembly, the gas injection work and the gas cylinder clamping work can be realized at the same time, further improving the convenience of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the implementation methods of the present invention will be further illustrated and described based on the following drawings. These drawings are only used to more conveniently and specifically describe the implementation methods of the present invention rather than to limit the present invention.

[0021] Figure 1 is a structural schematic diagram of the installation state of a gas cylinder to be inspected provided according to an exemplary embodiment of the utility model;

[0022] Figure 2 is a structural schematic diagram of a gas cylinder to be inspected in an uninstalled state according to an exemplary embodiment of the utility model;

[0023] Figure 3 is a schematic diagram of a half-section structure of a detection frame and a connecting pipe provided according to an exemplary embodiment of the utility model;

[0024] Figure 4 yes Figure 3 A magnified view of part A;

[0025] Figure 5 is a schematic diagram of the disassembled state of the clamping mechanism, the gas injection mechanism and the gas injection control mechanism and the half-section structure of the connecting pipe provided according to an exemplary embodiment of the utility model; and

[0026] Figure 6 It is a schematic structural diagram of an air injection pipe and a transmission frame provided according to an exemplary embodiment of the utility model.

[0027] In the figure: 1. detection frame; 2. travel hole; 3. clamping piece; 4. clamping plate; 5. clamping groove; 6. first spring; 7. connecting pipe; 8. connecting chamber; 9. guide chamber; 10. sealing cylinder; 11. connecting hole; 12. gas injection pipe; 13. docking joint; 14. air inlet; 15. follower rack; 16. baffle; 17. second spring; 18. transmission frame; 19. transmission column; 20. support frame; 21. driving gear; 22. operating lever; 23. gas cylinder to be inspected. DETAILED DESCRIPTION

[0028] The utility model provides a gas cylinder air tightness detection device, which can automatically realize the clamping of the gas cylinder to be inspected during the gas injection work, so that the gas injection work and the gas cylinder clamping work are realized together.

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the specific embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. These embodiments are provided by way of example only. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by those skilled in the art without making creative work are also within the scope of protection claimed by the utility model.

[0030] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0031] In the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0032] refer to Figures 1 to 6 The embodiment of the utility model provides a gas cylinder air tightness detection device. Figures 1 to 6As shown in , the gas cylinder air tightness detection device includes a detection frame 1, a left clamping mechanism, a right clamping mechanism and a gas injection mechanism. The detection frame 1 is provided with an internal space for placing the gas cylinder 23 to be detected. The left clamping mechanism and the right clamping mechanism are symmetrically arranged and are respectively located on the left and right sides of the internal space of the detection frame 1. Each of the left clamping mechanism and the right clamping mechanism includes: two symmetrically arranged travel holes 2, and the two travel holes 2 are respectively opened at the top and bottom of the detection frame 1; a clamping member 3, the upper end and the lower end of the clamping member 3 are respectively slidably installed in the two travel holes 2, and a clamping groove 5 is opened on the inner side of the clamping member 3; and a first spring 6, the first spring 6 is located in the travel hole 2 at the top of the detection frame 1, and one end of the first spring 6 is installed on the inner side of the clamping member 3, and the other end of the first spring 6 is installed on the inner wall of the travel hole 2 at the top of the detection frame 1. The gas injection mechanism includes a gas injection pipe 12 and a driving component for driving the gas injection pipe 12 to rise and fall. The gas injection pipe 12 can slide through the top of the detection frame 1. The upper end and the lower end of the gas injection pipe 12 are respectively used to connect the external gas supply equipment and the gas cylinder 23 to be inspected. The circumferential outer wall of the gas injection pipe 12 is installed (for example, fixedly installed) with a baffle 16 (for example, a rectangular baffle 16) and a transmission frame 18. The baffle 16 is connected to the top of the detection frame 1 through a second spring 17. The transmission frame 18 is located below the baffle 16 and is installed with two transmission columns 19. For example, a transmission column 19 is fixedly installed on each of the left and right sides of the transmission frame 18. The transmission column 19 can be a cylindrical structure. Each of the two transmission columns 19 can slide up and down against the inner side of the clamping member 3 of the corresponding one of the left clamping mechanism and the right clamping mechanism and stretch the first spring 6, and each of the two transmission columns 19 is slidably matched with the corresponding clamping groove 5 to slide into the clamping groove 5 during the descent of the gas injection pipe 12. The gas cylinder air tightness detection device can automatically drive the clamping members 3 of the left clamping mechanism and the right clamping mechanism to move inward to clamp the gas cylinder 23 to be inspected under the action of the contraction force of the first spring 6 during the working process of the gas injection pipe 12 descending and docking with the gas cylinder 23 to be inspected to inject gas into the gas cylinder 23 to be inspected, so that the gas injection work and the gas cylinder clamping work are realized together, thereby ensuring the stability of the gas cylinder 23 to be inspected during the air tightness detection, and not reducing the operating convenience and work efficiency of the detection device due to the step-by-step gas injection work and the gas cylinder clamping work.

[0033] In a preferred embodiment of the present invention, a clamping plate 4 is installed inside the clamping member 3, for example, a clamping plate 4 is fixedly installed inside the clamping member 3. A plurality of clamping plates 4 can be provided to enhance the firmness of clamping the gas cylinder 23 to be inspected.

[0034] In a preferred embodiment of the present invention, the clamping groove 5 includes a connected oblique groove and a vertical groove, and during the descending process of the gas injection pipe 12, the transmission column 19 first slides into the corresponding oblique groove, and then slides from the corresponding oblique groove into the corresponding vertical groove. In this way, under the action of the contraction force (inward movement force) of the first spring (preferably a tension spring) 6, when the gas injection pipe 12 moves downward with the transmission frame 18 and the transmission column 19, the transmission column 19 will preferentially contact and push the inclined groove portion in the clamping groove 5 to slide into the inclined groove, and then use the inclined structure of the inclined groove to slide into the vertical groove, thereby transmitting the contraction force of the first spring 6 to the clamping member 3, so as to drive the clamping members 3 and the clamping plates 4 on the left and right sides to move inward along the stroke hole 2 for a certain distance and contact the gas cylinder 23 to be inspected, and apply a clamping force to the gas cylinder 23 to be inspected to clamp the gas cylinder 23 to be inspected, with good clamping effect, avoiding the impact force generated at the moment of gas release during gas injection detection, causing the gas cylinder 23 to shake, which brings unnecessary trouble to the gas cylinder air tightness detection, and facilitates the subsequent air tightness detection.

[0035] In a preferred embodiment of the utility model, the gas cylinder air tightness detection device also includes a gas injection control mechanism, which includes a connecting pipe 7 and a hollow docking joint 13. The connecting pipe 7 is inserted at the top of the detection frame 1, for example, the connecting pipe 7 is fixedly inserted at the top center of the detection frame 1. The upper end of the connecting pipe 7 is used to connect with an external gas supply device. The internal space of the connecting pipe 7 is divided into a connecting chamber 8 at the upper part and a guide chamber 9 at the lower part by a partition installed therein. The partition forms a sealing cylinder 10 at the upper part of the guide chamber 9 through a sealing plate extending downward. An air intake channel is formed between the sealing plate and the inner wall of the connecting pipe 7, that is, the air intake channel is part of the guide chamber 9. The partition is provided with a connecting hole 11 at a position corresponding to the air intake channel, for example, the partition is provided with a plurality of connecting holes 11 at its circumferential edge; the connecting chamber 8 is connected to the air intake channel through the connecting hole 11. The upper part of the docking joint 13 can be slidably sealed in (for example, inserted in) the sealing tube 10 in the natural state of the gas cylinder air tightness detection device (that is, the state when the gas cylinder air tightness detection device is not performing the gas injection operation and the gas cylinder clamping operation), and is provided with an air inlet 14, for example, two air inlets 14 are symmetrically provided on the circumferential outer wall of the docking joint 13; the lower part of the docking joint 13 is sealed and installed in the gas injection pipe 12, for example, the lower part of the docking joint 13 is fixedly installed on the top end of the gas injection pipe 12; and the docking joint 13 is connected to the gas injection pipe 12. The gas injection control mechanism can seal the docking joint 13 in the natural state of the gas cylinder air tightness detection device through the cooperation of the connecting tube 7 and the docking joint 13 to prevent gas from flowing into the gas injection pipe 12. In the process of the gas injection pipe 12 descending a certain distance to dock with the gas cylinder 23 to be inspected, the docking joint 13 can be automatically driven to descend as the gas injection pipe 12 descends to pull the gas inlet 14 of the docking joint 13 out of the sealing tube 10 (that is, detached from the interior of the sealing tube 10), so that the gas inlet 14 is temporarily connected with the guide cavity 9. At this time, the gas is injected into the docking joint 13 through the gas inlet 14, and is further injected into the gas injection pipe 12 and the gas cylinder 23 to be inspected, so that the gas cylinder 23 to be inspected is filled with gas. If the gas cylinder 23 to be inspected has a crack, the gas will overflow from the crack, so that the air tightness detection of the gas cylinder 23 to be inspected can be achieved. Therefore, the gas injection control mechanism can flexibly cut off and conduct the gas according to the needs of gas injection, so that the gas injection process is reasonably controlled and it is convenient to flexibly perform gas tightness detection.

[0036] In a preferred embodiment of the present invention, the gas injection pipe 12 is slidably installed in the flow guide cavity 9 in the natural state of the gas cylinder air tightness detection device.

[0037] In a preferred embodiment of the utility model, the driving assembly includes a follower rack 15, a support frame 20, a driving gear shaft, a driving gear 21 and an operating rod 22; wherein: the follower rack 15 is installed (for example, fixedly installed) on the front side of the gas injection pipe 12; the support frame 20 is installed on the front side of the detection frame 1; the driving gear shaft is rotatably installed on the support frame 20; the driving gear 21 is installed on the driving gear shaft and meshes with the follower rack 15; the operating rod 22 is connected to the driving gear shaft, for example, the operating rod 22 is fixedly connected to the two ends of the driving gear shaft. The driving assembly is reasonably arranged, and only the operating rod 22 needs to be lifted to drive the gas injection pipe 12 to descend through the meshing of the driving gear 21 and the follower rack 15 to dock with the gas cylinder 23 to be inspected for gas injection, thereby automatically achieving the clamping of the gas cylinder 23 to be inspected during the gas injection process. Therefore, the gas injection work and the gas cylinder clamping work can be realized together by using only the driving assembly, thereby further improving the convenience of operation. By placing the gas cylinder 23 to be inspected at a suitable position in the inspection frame 1, and then manually bending the operating lever 22 upward, the operating lever 22 rotates with the driving gear 21, and then the driving gear 21 rotates in cooperation with the follower rack 15 to drive the gas injection pipe 12 downward, so that the gas injection pipe 12 descends and is inserted into the gas cylinder 23 to be inspected, so as to facilitate the gas injection of the gas cylinder 23 to be inspected for air tightness detection.

[0038] In a preferred embodiment of the present invention, there are two support frames 20, each of which is an L-shaped structure, and the outer end of each of the two support frames 20 is installed on the front side of the detection frame 1 through a fastener (for example, a bolt), and the inner end of each of the two support frames 20 is rotatably connected to the corresponding end of the driving gear shaft through a bearing.

[0039] In a preferred embodiment of the present invention, a flexible grip tube is installed at the free end of the operating rod 22 to facilitate operation.

[0040] In a preferred embodiment of the present invention, the first spring 6 and the second spring 17 are both tension springs, and the contraction force of the tension spring is stronger, thereby further enhancing the clamping force of the clamping member 3 and the clamping plate 4 on the gas cylinder to be inspected 23. One end of the first spring 6 is embedded in the inner side of the clamping member 3, and the other end of the first spring 6 is embedded in the inner wall of the travel hole 2 at the top of the detection frame 1; the top end of the second spring 17 is embedded in the top of the detection frame 1, and the bottom end of the second spring 17 is embedded in the top of the baffle 16.

[0041] In a preferred embodiment of the present invention, there are two second springs 17 , and the two second springs 17 are symmetrically arranged relative to the gas injection pipe 12 , thereby enhancing the stability and firmness of the connection between the baffle 16 and the detection frame 1 .

[0042] In a preferred embodiment of the present invention, the bottom of the detection rack 1 is a platform for placing the gas cylinder 23 to be detected.

[0043] The working principle of the gas cylinder air tightness detection device of a preferred embodiment of the utility model is as follows: when in use, the gas cylinder 23 to be inspected is first placed at a suitable position in the detection frame 1, and then the operating rod 22 is manually bent upward to rotate the operating rod 22 with the driving gear 21, so that the driving gear 21 cooperates with the follower rack 15 by rotating to bring the gas injection pipe 12 down. In the process of the gas injection pipe 12 descending, the gas injection pipe 12 will also descend with the transmission frame 18 and the transmission column 19. During the descent process, under the action of the contraction force of the first spring 6, the transmission column 19 will preferentially contact and push the inclined groove part of the clamping groove 5 to slide into the inclined groove, and then slide into the vertical groove by using the inclined structure of the inclined groove, so as to transmit the contraction force of the first spring 6 to the clamping member 3, so as to drive the clamping members 3 and the clamping plates 4 on the left and right sides to move inward along the stroke hole 2 for a certain distance and contact the gas cylinder 23 to be inspected, and apply a clamping force to the gas cylinder 23 to clamp the gas cylinder 23 to be inspected, so as to facilitate the subsequent air tightness detection. When the gas injection pipe 12 moves downward a certain distance to dock with the gas cylinder 23 to be inspected, the gas inlet 14 of the docking joint 13 will be detached from the interior of the sealing tube 10, so that the gas inlet 14 is temporarily connected with the guide cavity 9. At this time, the gas is injected into the docking joint 13 through the gas inlet 14, and further injected into the gas injection pipe 12 and the gas cylinder 23 to be inspected, so that the gas cylinder 23 to be inspected is filled with gas. If the gas cylinder 23 to be inspected has a crack, the gas will overflow from the crack, so that the airtightness detection of the gas cylinder 23 to be inspected can be realized.

[0044] It should be understood that the drawings in the embodiments of the present invention only relate to structures related to the embodiments of the present invention, and other structures can refer to the usual design. The devices and / or structures in the various embodiments provided in the present invention can be combined, modified and / or changed to form new technical solutions. In the absence of creative work, these technical solutions should also be included in the scope of protection claimed by the present invention.

[0045] A large number of specific examples are provided in the embodiments provided herein, and it should be understood that these examples are only for the purpose of describing the embodiments of the present invention in detail and are not intended to limit the present invention. The embodiments of the present invention can be practiced without these specific examples. In some embodiments, structures and / or technologies known to those skilled in the art are not shown in detail so as not to obscure the understanding of the present invention.

[0046] Although preferred embodiments of the present invention have been shown and described herein, it is readily understood by those skilled in the art that these embodiments are provided by way of example only. A variety of changes, modifications, and substitutions will now occur to those skilled in the art without departing from the present invention. It should be understood that the various alternatives to the embodiments of the present invention described herein are optionally used to implement the present invention. It is intended to define the scope of the present invention with the following claims, and thus cover the devices, structures, and equivalents thereof within the scope of these claims.

Claims

1. A gas cylinder air tightness detection device, characterized in that: It comprises a detection frame (1), a left clamping mechanism, a right clamping mechanism and a gas injection mechanism, wherein: The detection frame (1) is provided with an internal space for placing the gas cylinder (23) to be detected; The left clamping mechanism and the right clamping mechanism are symmetrically arranged and are respectively located on the left and right sides of the internal space, each of the left clamping mechanism and the right clamping mechanism comprises: two symmetrically arranged travel holes (2), the two travel holes (2) are respectively opened at the top and bottom of the detection frame (1); a clamping member (3), the upper end and the lower end of the clamping member (3) are respectively slidably installed in the two travel holes (2), and a clamping groove (5) is opened on the inner side of the clamping member (3); and a first spring (6), the first spring (6) is located in the travel hole (2) at the top of the detection frame (1), and one end of the first spring (6) is installed on the inner side of the clamping member (3), and the other end of the first spring (6) is installed on the inner wall of the travel hole (2) at the top of the detection frame (1); The gas injection mechanism comprises a gas injection pipe (12) and a driving assembly for driving the gas injection pipe (12) to rise and fall. The gas injection pipe (12) can slidably pass through the top of the detection frame (1). The upper end and the lower end of the gas injection pipe (12) are respectively used to connect external gas supply equipment and the gas cylinder (23) to be inspected. A baffle (16) and a transmission frame (18) are installed on the circumferential outer wall of the gas injection pipe (12). The baffle (16) is connected to the top of the detection frame (1) via a second spring (17). The transmission frame (18) is located below the baffle (16) and is installed with two transmission columns (19), each of the two transmission columns (19) can slide up and down to abut against the inner side of the clamping member (3) of a corresponding one of the left clamping mechanism and the right clamping mechanism and stretch the first spring (6), and each of the two transmission columns (19) is slidably matched with the corresponding clamping groove (5) to slide into the clamping groove (5) during the descent of the gas injection pipe (12).

2. The gas cylinder air tightness detection device according to claim 1, characterized in that: A clamping plate (4) is installed on the inner side of the clamping member (3).

3. The gas cylinder air tightness detection device according to claim 1, characterized in that: The clamping groove (5) comprises a connected oblique groove and a vertical groove, and during the descending process of the gas injection pipe (12), the transmission column (19) first slides into the corresponding oblique groove, and then slides from the corresponding oblique groove into the corresponding vertical groove.

4. The gas cylinder air tightness detection device according to claim 1, characterized in that: It also includes a gas injection control mechanism, which includes a connecting pipe (7) and a hollow butt joint (13); wherein: The connecting pipe (7) is inserted into the top of the detection frame (1), the upper end of the connecting pipe (7) is used to connect with the external gas supply equipment, and the internal space of the connecting pipe (7) is divided into a connecting chamber (8) at the upper part and a guide chamber (9) at the lower part by a partition installed therein; The partition plate forms a sealing cylinder (10) at the upper part of the guide cavity (9) through a sealing plate extending downward, an air intake channel is formed between the sealing plate and the inner wall of the connecting pipe (7), the partition plate is provided with a connecting hole (11) at a position corresponding to the air intake channel, and the connecting cavity (8) is connected to the air intake channel through the connecting hole (11); The upper part of the docking joint (13) can be slidably sealed in the sealing tube (10) in the natural state of the gas cylinder air tightness detection device, and is provided with an air inlet (14); the lower part of the docking joint (13) is sealed and installed in the gas injection pipe (12), and the docking joint (13) is connected to the gas injection pipe (12).

5. The gas cylinder air tightness detection device according to claim 4, characterized in that: The gas injection pipe (12) is slidably installed in the flow guide cavity (9) in the natural state.

6. The gas cylinder air tightness detection device according to claim 1, characterized in that: The driving assembly comprises a follower rack (15), a support frame (20), a driving gear shaft, a driving gear (21) and an operating rod (22); wherein: The follower rack (15) is installed on the front side of the gas injection pipe (12); The support frame (20) is installed on the front side of the detection frame (1); The driving gear shaft is rotatably mounted on the support frame (20); The driving gear (21) is mounted on the driving gear shaft and meshes with the follower rack (15); The operating rod (22) is connected to the driving gear shaft.

7. The gas cylinder air tightness detection device according to claim 6, characterized in that: There are two support frames (20), the outer end of each of the two support frames (20) is mounted on the front side of the detection frame (1) through a fastener, and the inner end of each of the two support frames (20) is rotatably connected to a corresponding end of the driving gear shaft through a bearing.

8. The gas cylinder air tightness detection device according to claim 6, characterized in that: A flexible grip tube is installed at the free end of the operating rod (22).

9. The gas cylinder air tightness detection device according to claim 1, characterized in that: The first spring (6) and the second spring (17) are both tension springs; One end of the first spring (6) is embedded in the inner side of the clamping member (3), and the other end of the first spring (6) is embedded in the inner wall of the travel hole (2) at the top of the detection frame (1); The top end of the second spring (17) is embedded in the top of the detection frame (1), and the bottom end of the second spring (17) is embedded in the top of the baffle (16).

10. The gas cylinder air tightness detection device according to claim 1, characterized in that: There are two second springs (17), and the two second springs (17) are symmetrically arranged relative to the gas injection pipe (12).

Images