An automatic leak detection device for the inner box body of a diaphragm gas meter

Abstract

The present invention belongs to the technical field of leak detection devices, in particular to a fully automatic leak detection device for the inner box body of a diaphragm gas meter. Aiming at the existing fully automatic leak detection device for the inner box body of a diaphragm gas meter, it is unable to detect leaks in multiple box bodies simultaneously, and it is inconvenient to dry the water on the outer surfaces of multiple box bodies after leak detection. The following solution is now proposed. It includes a U-shaped detection frame, and a water tank is slidably connected to the inner wall of the U-shaped detection frame. Guide seats are fixed at both ends of the water tank. Through the drying mechanism of the present invention, when the piston plate moves towards the position of the turntable in the fixed cylinder, the one-way intake valve is opened, and the air heated by the heating wire on the air inlet pipe enters the fixed cylinder. When the piston plate moves towards the nozzle, the one-way exhaust valve is opened, and the heated air is discharged through the nozzle. At the same time, with the reciprocating movement, the drying operation of three box bodies is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of leak detection devices, and particularly to a fully automatic leak detection device for the inner box body of a diaphragm gas meter. Background Art

[0002] The diaphragm gas meter converts the linear reciprocating motion into circular motion through the internal mechanical structure, and then drives the mechanical roller counter to rotate through the circular motion. Each time the diaphragm reciprocates, a certain amount of gas is discharged. Finally, the roller rotates through a counting unit to achieve the effect of roller rotation metering and display.

[0003] The existing fully automatic leak detection device for the inner box body of a diaphragm gas meter cannot simultaneously detect the leaks of multiple box bodies, has low leak detection efficiency, and is inconvenient to dry the water on the outer surfaces of multiple box bodies after leak detection. When the box bodies are manually removed, the water will drip everywhere, which brings inconvenience to manual cleaning. Therefore, we have designed a fully automatic leak detection device for the inner box body of a diaphragm gas meter. Summary of the Invention

[0004] A fully automatic leak detection device for the inner box body of a diaphragm gas meter proposed by the present invention solves the problems that the existing fully automatic leak detection device for the inner box body of a diaphragm gas meter cannot simultaneously detect the leaks of multiple box bodies and is inconvenient to dry the water on the outer surfaces of multiple box bodies after leak detection.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A fully automatic leak detection device for the inner box body of a diaphragm gas meter, including a U-shaped detection frame. A water tank is slidably connected to the inner wall of the U-shaped detection frame. Guide seats are fixed at both ends of the water tank. Guide grooves matching the guide seats are provided on both inner walls of the U-shaped detection frame. A hydraulic rod is fixed on the inner bottom surface of the U-shaped detection frame, and the telescopic end of the hydraulic rod is connected to the bottom of the water tank. Above the water tank, there is a support plate one fixed on the inner wall of the U-shaped detection frame. Three U-shaped support plates are equidistantly installed at the bottom end of the support plate one. Movable covers are slidably connected to the inner walls of the U-shaped support plates. Air outlet pipes penetrate and are fixed on the movable covers. Telescopic bellows are fixed at the top ends of the air outlet pipes. Sliders are fixed at both ends of the movable covers. Slide grooves matching the sliders are provided on both inner walls of the U-shaped support plates. One ends of the two sliders on the middle U-shaped support plate are both fixed with moving rods, and the other ends of the moving rods are connected to the corresponding sliders on the other two U-shaped support plates. Moving channels matching the moving rods are provided on the U-shaped support plates, and the moving channels are all communicated with the corresponding slide grooves. A booster pump is fixed on the top of the support plate one. The output end of the booster pump is fixed with a four-way pipe. The other three ports on the four-way pipe are correspondingly connected with an intake straight pipe and two intake elbow pipes. One ends of the intake straight pipe and the two intake elbow pipes all penetrate the support plate one and are connected to the top ends of the corresponding telescopic bellows. A clamping mechanism is connected between the three U-shaped support plates. Above the booster pump, there is a support plate two fixed on the inner wall of the U-shaped detection frame. A covering mechanism is connected between the support plate two and the support plate one. Two symmetrically arranged support plates three are fixed on the inner wall of the U-shaped detection frame. A drying mechanism is connected between the two support plates three and the U-shaped detection frame.

[0007] Preferably, the clamping mechanism includes two symmetrically arranged clamping plates that are both slidably connected to the U-shaped support plates. Sliding seats are fixed at the bottom ends of the clamping plates. Sliding grooves matching the two sliding seats are provided on the inner bottom surfaces of the U-shaped support plates.

[0008] Preferably, the two sliding seats in the same sliding groove are screwed with the same bidirectional lead screw, and the bidirectional lead screws are all rotatably connected in the corresponding sliding grooves.

[0009] Preferably, both ends of the middle bidirectional lead screw extend to the outside of the corresponding U-shaped support plate and are fixedly connected with a connecting shaft. One end of each of the other two bidirectional lead screws extends to the outside of the corresponding U-shaped support plate and is connected to one end of the corresponding connecting shaft. One end of the left bidirectional lead screw extends to the outside of the corresponding U-shaped support plate and is fixedly connected with a turning block.

[0010] Preferably, the covering mechanism includes a square-shaped lifting plate that is slidably connected to the inner wall of the U-shaped detection frame. Two symmetrically arranged one-way lead screws are screwed on the square-shaped lifting plate. The bottom ends of the one-way lead screws are both rotatably connected to the top of the support plate one, and the one-way lead screws are all rotatably connected to the support plate two.

[0011] Preferably, two symmetrically arranged connecting rods are fixed to the bottom of the square-shaped lifting plate. The other ends of the connecting rods penetrate through the support plate and are connected to the tops of the corresponding movable covers. Movable holes matching the connecting rods are formed in the support plates. First bevel gears are fixed to the tops of the one-way lead screws. A dual-shaft motor is fixed to the top of the second support plate. Second bevel gears meshing with the corresponding first bevel gears are fixedly connected to the two output shafts of the dual-shaft motor.

[0012] Preferably, the drying mechanism includes movable bases slidably connected to the top of the third support plate. Moving seats are fixed to the bottom ends of the movable bases. Moving grooves matching the moving seats are formed in the tops of the third support plates. Reciprocating lead screws are helically connected to the moving seats. The reciprocating lead screws are rotatably connected in the corresponding moving grooves. One ends of the reciprocating lead screws extend to the outside of the U-shaped detection frame and are fixedly connected with belt pulleys. A transmission belt is connected in a transmission manner between the two belt pulleys.

[0013] Preferably, a driving motor is fixed to the right side wall of the U-shaped detection frame. One end of one of the reciprocating lead screws extends to the outside of the U-shaped detection frame and is connected to the output shaft of the driving motor. Fixed cylinders are fixed to the tops of the movable bases. Piston plates are slidably and sealingly connected to the inner walls of the fixed cylinders. Piston rods are fixed to one side walls of the piston plates.

[0014] Preferably, rotating shafts are rotatably connected to the movable bases. Turntables are fixed to one ends of the rotating shafts, and gears are fixedly connected to the other ends. Rack bars meshing with the gears are fixed to the third support plates. Push-pull rods are hinged to the edges of the surfaces of the turntables. One ends of the piston rods penetrate through the corresponding fixed cylinders and are hinged to one ends of the corresponding push-pull rods.

[0015] Preferably, spray heads are fixed to the air outlet ports of the fixed cylinders. Air inlet pipes are fixed to the air inlet ports of the fixed cylinders. Heating wires are fixedly connected to the outside of the air inlet pipes. One-way exhaust valves are installed at the air outlet ports of the fixed cylinders. One-way inlet valves are installed at the air inlet ports of the fixed cylinders.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In the clamping mechanism of the present invention, through the cooperation of the clamping plates, sliding seats, bidirectional lead screws, turning blocks, and connecting shafts, and by turning the turning blocks, the three bidirectional lead screws and the two connecting shafts can be rotated simultaneously. Since the bidirectional lead screws are helically connected to the corresponding two sliding seats, the two clamping plates on the U-shaped support plate can move towards each other and clamp the placed boxes tightly. Thus, multiple boxes can be clamped tightly at the same time, saving time and improving efficiency during manual clamping.

[0018] 2. In the covering mechanism of the present invention, with the cooperation of the U-shaped lifting plate, the one-way screw rod, the connecting rod, the bevel gear one, the bevel gear two, and the double-axis motor, and started by the double-axis motor, the two bevel gears two are rotated, and the corresponding bevel gear one is transmitted, and then the one-way screw rod connected to the corresponding bevel gear one can be rotated. Since the two one-way screw rods are spirally connected to the U-shaped lifting plate, the U-shaped lifting plate can be moved downward, and the two symmetrical connecting rods at the bottom of the U-shaped lifting plate can be moved downward, and then the three movable cover plates can be moved downward at the same time, and the corresponding box body top is closed, so as to achieve sealing of the inside of the box body and prevent water from entering the box body and affecting the leak detection result when the box body enters water for leak detection.

[0019] 3. In the drying mechanism of the present invention, through the cooperation of the movable base, the movable base, the reciprocating screw rod, the pulley, the transmission belt, the driving motor, the fixed cylinder, the piston plate, the piston rod, the rotating shaft, the rotating disk, the gear, the rack, the push-pull rod, the nozzle, the air inlet pipe, the heating wire, the one-way exhaust valve and the one-way air inlet valve, and through the simultaneous start of the two heating wires and the driving motor, the two reciprocating screw rods are rotated simultaneously under the setting of the two pulleys and the transmission belt. Since the reciprocating screw rods are spirally connected with the corresponding movable base, the movable base corresponding to the movable base is reciprocated, so that the two fixed cylinders can reciprocate, and at the same time the gears are meshed with the corresponding racks, and then When the movable base is reciprocating, the turntable corresponding to the rotating shaft can also be rotated. Since the turntable is hinged to the piston rod through a hinged push-pull rod, the piston plate can reciprocate in the corresponding fixed cylinder. When the piston plate moves in the fixed cylinder toward the position of the turntable, the one-way air inlet valve is opened, and the air heated by the heating wire on the air inlet pipe enters the fixed cylinder. When the piston plate moves toward the nozzle, the one-way exhaust valve is opened, and the heated air is discharged through the nozzle. In conjunction with the reciprocating movement, the drying operation of the three box bodies is realized to avoid water dripping everywhere when the box body is taken down, which causes inconvenience in manual cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a front view of a fully automatic leak detection device for an inner box of a diaphragm gas meter proposed by the present invention;

[0021] Figure 2 This is a schematic structural diagram of a top view of a drying mechanism portion of a fully automatic leak detection device for an inner box of a diaphragm gas meter proposed by the present invention;

[0022] Figure 3 This is a structural schematic diagram of a side view of a drying mechanism of a fully automatic leak detection device for an inner box of a diaphragm gas meter proposed by the present invention;

[0023] Figure 4Schematic diagram of the enlarged structure at location A of a fully automatic leak detection device for the inner box body of a diaphragm gas meter proposed by the present invention;

[0024] Figure 5 Schematic diagram of the enlarged structure at location B of a fully automatic leak detection device for the inner box body of a diaphragm gas meter proposed by the present invention.

[0025] In the figure: 1, U-shaped detection frame; 2, water tank; 21, guide seat; 22, hydraulic rod; 3, first support plate; 4, U-shaped support plate; 41, movable cover plate; 42, air outlet pipe; 43, telescopic bellows; 44, slider; 45, moving rod; 5, booster pump; 51, four-way pipe; 52, intake straight pipe; 53, intake elbow; 6, clamping mechanism; 601, clamping plate; 602, sliding seat; 603, bidirectional lead screw; 604, knob block; 605, connecting shaft; 7, covering mechanism; 701, mouth-shaped lifting plate; 702, unidirectional lead screw; 703, connecting rod; 704, first bevel gear; 705, second bevel gear; 706, double-shaft motor; 8, second support plate; 9, third support plate; 10, drying mechanism; 1001, movable base; 1002, moving seat; 1003, reciprocating lead screw; 1004, pulley; 1005, transmission belt; 1006, drive motor; 1007, fixed cylinder; 1008, piston plate; 1009, piston rod; 1010, rotating shaft; 1011, turntable; 1012, gear; 1013, rack; 1014, push-pull rod; 1015, nozzle; 1016, air inlet pipe; 1017, heating wire; 1018, one-way exhaust valve; 1019, one-way intake valve. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0027] Embodiment 1

[0028] Refer to Figure 1 、 2And 3, a fully automatic leak detection device for the inner box body of a diaphragm gas meter, including a U-shaped detection frame 1. A water tank 2 is slidably connected to the inner wall of the U-shaped detection frame 1. Guide seats 21 are fixed at both ends of the water tank 2. Guide grooves matching the guide seats 21 are formed on both inner walls of the U-shaped detection frame 1. A hydraulic rod 22 is fixed on the inner bottom surface of the U-shaped detection frame 1. The telescopic end of the hydraulic rod 22 is connected to the bottom of the water tank 2. Above the water tank 2, there is a first support plate 3 fixed to the inner wall of the U-shaped detection frame 1. Three U-shaped support plates 4 are equidistantly installed at the bottom end of the first support plate 3. Movable covers 41 are slidably connected to the inner walls of the U-shaped support plates 4. Air outlet pipes 42 penetrate and are fixed on the movable covers 41. Telescopic bellows 43 are fixed to the tops of the air outlet pipes 42. Sliders 44 are fixed at both ends of the movable covers 41. Slide grooves matching the sliders 44 are formed on both inner walls of the U-shaped support plates 4. One ends of two sliders 44 on the middle U-shaped support plate 4 are both fixed with moving rods 45. The other ends of the moving rods 45 are connected to the corresponding sliders 44 on the other two U-shaped support plates 4. Moving channels matching the moving rods 45 are formed on the U-shaped support plates 4. The moving channels are communicated with the corresponding slide grooves. A booster pump 5 is fixed to the top of the first support plate 3. The output end of the booster pump 5 is fixed with a four-way pipe 51. The other three ports on the four-way pipe 51 are correspondingly connected with an intake straight pipe 52 and two intake elbow pipes 53. One ends of the intake straight pipe 52 and the two intake elbow pipes 53 penetrate the first support plate 3 and are connected to the tops of the corresponding telescopic bellows 43. Above the booster pump 5, there is a second support plate 8 fixed to the inner wall of the U-shaped detection frame 1. Two symmetrically arranged third support plates 9 are fixed to the inner wall of the U-shaped detection frame 1. The setting of the telescopic bellows 43 can perform telescopic movement while the movable cover 41 moves up and down.

[0029] By starting the hydraulic rod 22, the water tank 2 is then pushed to rise through the two guide seats 21, so that the three box bodies can enter the water tank 2. At the same time, by starting the booster pump 5, the air inside the three box bodies is pressurized. When the box body leaks, bubbles will appear at the corresponding position of the box body in the water, so as to facilitate automatic leak detection of multiple box bodies, with high leak detection efficiency. After the leak detection is completed, the hydraulic rod 22 contracts, and the three box bodies leave the water.

[0030] Embodiment 2

[0031] Refer to Figure 4, a clamping mechanism 6 is connected between the three U-shaped supporting plates 4. The clamping mechanism 6 includes two symmetrical clamping plates 601 that are both slidably connected to the U-shaped supporting plate 4. Sliding seats 602 are fixed to the bottom ends of the clamping plates 601. Sliding grooves that cooperate with the two sliding seats 602 are respectively formed on the inner bottom surfaces of the U-shaped supporting plates 4. The same bidirectional lead screw 603 is helically connected to the two sliding seats 602 in the same sliding groove. The bidirectional lead screw 603 is rotatably connected in the corresponding sliding groove. Both ends of the middle bidirectional lead screw 603 extend to the outside of the corresponding U-shaped supporting plate 4 and are fixedly connected with a connecting shaft 605. One ends of the remaining two bidirectional lead screws 603 extend to the outside of the corresponding U-shaped supporting plate 4 and are connected to one end of the corresponding connecting shaft 605. One end of the left bidirectional lead screw 603 extends to the outside of the corresponding U-shaped supporting plate 4 and is fixedly connected with a turning block 604.

[0032] By twisting the turning block 604, the three bidirectional lead screws 603 and the two connecting shafts 605 are rotated simultaneously. Since the bidirectional lead screws 603 are both helically connected to the corresponding two sliding seats 602, the two clamping plates 601 on the U-shaped supporting plate 4 can move towards each other and clamp and fasten the placed box body.

[0033] Embodiment Three

[0034] Refer to Figure 1 , a covering mechanism 7 is connected between the second support plate 8 and the first support plate 3. The covering mechanism 7 includes a square-shaped lifting plate 701 that is slidably connected to the inner wall of the U-shaped detection frame 1. Two symmetrical unidirectional lead screws 702 are helically connected to the square-shaped lifting plate 701. The bottom ends of the unidirectional lead screws 702 are rotatably connected to the top of the first support plate 3. The unidirectional lead screws 702 are rotatably connected to the second support plate 8. Two symmetrical connecting rods 703 are fixed to the bottom of the square-shaped lifting plate 701. The other ends of the connecting rods 703 penetrate through the first support plate 3 and are connected to the top of the corresponding movable cover plate 41. Moving holes that cooperate with the connecting rods 703 are respectively formed on the first support plates 3. First bevel gears 704 are fixed to the top ends of the unidirectional lead screws 702. A dual-axis motor 706 is fixed to the top of the second support plate 8. Second bevel gears 705 that are meshed with the corresponding first bevel gears 704 are fixedly connected to the two output shafts of the dual-axis motor 706. The cross-section of the square-shaped lifting plate 701 is a square-shaped structure.

[0035] It is started by the biaxial motor 706, causing the two bevel gears II 705 to rotate and driving the corresponding bevel gears I 704. Subsequently, the unidirectional lead screws 702 connected to the bevel gears I 704 can rotate. Since the two unidirectional lead screws 702 are helically connected to the square-shaped lifting plate 701, the square-shaped lifting plate 701 can move downward, and the two symmetrically arranged connecting rods 703 at the bottom of the square-shaped lifting plate 701 can move downward. Subsequently, the three movable covers 41 can move downward simultaneously and cover the top of the corresponding box body, realizing the sealing of the interior of the box body.

[0036] Embodiment 4

[0037] Referring to FIGS. 2, 3 and 5, a drying mechanism 10 is connected between the two support plates III 9 and the U-shaped detection frame 1. The drying mechanism 10 includes movable bases 1001 that are all slidably connected to the top of the support plates III 9. Moving seats 1002 are fixed to the bottom ends of the movable bases 1001. Moving grooves adapted to the moving seats 1002 are formed in the tops of the support plates III 9. Reciprocating lead screws 1003 are helically connected to the moving seats 1002. The reciprocating lead screws 1003 are all rotatably connected in the corresponding moving grooves. One end of each reciprocating lead screw 1003 extends to the outside of the U-shaped detection frame 1 and is fixedly connected to a pulley 1004. A transmission belt 1005 is connected between the two pulleys 1004. A drive motor 1006 is fixed to the right side wall of the U-shaped detection frame 1. One end of one of the reciprocating lead screws 1003 extends to the outside of the U-shaped detection frame 1 and is connected to the output shaft of the drive motor 1006. Fixed cylinders 1007 are fixed to the tops of the movable bases 1001. Piston plates 1008 are slidably and sealingly connected to the inner walls of the fixed cylinders 1007. Pistons rods 1009 are fixed to one side walls of the piston plates 1008. Rotating shafts 1010 are rotatably connected to the movable bases 1001. Turntables 1011 are fixed to one ends of the rotating shafts 1010, and gears 1012 are fixedly connected to the other ends. Rack bars 1013 meshing with the gears 1012 are fixed to the support plates III 9. Push-pull rods 1014 are hinged to the edges of the surfaces of the turntables 1011. One end of each pistons rod 1009 penetrates through the corresponding fixed cylinder 1007 and is hinged to one end of the corresponding push-pull rod 1014. Spray heads 1015 are fixed to the air outlet ports of the fixed cylinders 1007. Air inlet pipes 1016 are fixed to the air inlet ports of the fixed cylinders 1007. Heating wires 1017 are fixedly connected to the outside of the air inlet pipes 1016. One-way exhaust valves 1018 are installed at the air outlet ports of the fixed cylinders 1007. One-way intake valves 1019 are installed at the air inlet ports of the fixed cylinders 1007.

[0038] By starting the two heating wires 1017 and the driving motor 1006 at the same time, the two reciprocating screws 1003 are rotated at the same time under the setting of the two pulleys 1004 and the transmission belt 1005. Since the reciprocating screws 1003 are spirally connected with the corresponding moving seats 1002, the movable base 1001 corresponding to the moving seat 1002 can move back and forth, so that the two fixed cylinders 1007 can move back and forth, and at the same time, the gears 1012 are meshed with the corresponding racks 1013, so that the movable base 1001 moves back and forth, and the turntable 1011 corresponding to the rotating shaft 1010 can also rotate. Since the turntable 1011 is connected by the hinged push-pull rod 101 4 is hinged with the piston rod 1009, so that the piston plate 1008 can reciprocate in the corresponding fixed cylinder 1007. When the piston plate 1008 moves to the position of the turntable 1011 in the fixed cylinder 1007, the one-way air inlet valve 1019 is opened, and the air heated by the heating wire 1017 on the air inlet pipe 1016 enters the fixed cylinder 1007. When the piston plate 1008 moves toward the nozzle 1015, the one-way exhaust valve 1018 is opened, and the heated air is discharged through the nozzle 1015. At the same time, the reciprocating movement is coordinated to realize the drying operation of the three box bodies, so as to avoid water dripping everywhere when the box body is taken down, which brings inconvenience to manual cleaning.

[0039] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A fully automatic leak detection device for the inner box body of a diaphragm gas meter, including a U-shaped detection frame (1). It is characterized in that A water tank (2) is slidably connected to the inner wall of the U-shaped detection frame (1). Guide seats (21) are fixed at both ends of the water tank (2). Guide grooves matching the guide seats (21) are provided on both inner walls of the U-shaped detection frame (1). A hydraulic rod (22) is fixed on the inner bottom surface of the U-shaped detection frame (1). The telescopic end of the hydraulic rod (22) is connected to the bottom of the water tank (2). Above the water tank (2), there is a support plate one (3) fixed on the inner wall of the U-shaped detection frame (1). Three U-shaped support plates (4) are equidistantly installed at the bottom end of the support plate one (3). Movable covers (41) are slidably connected to the inner walls of the U-shaped support plates (4). Air outlet pipes (42) penetrate and are fixed on the movable covers (41). Telescopic bellows (43) are fixed at the top ends of the air outlet pipes (42). Sliders (44) are fixed at both ends of the movable covers (41). Sliding grooves matching the sliders (44) are provided on both inner walls of the U-shaped support plates (4). One ends of the two sliders (44) on the middle U-shaped support plate (4) are both fixed with moving rods (45). The other ends of the moving rods (45) are connected to the corresponding sliders (44) on the other two U-shaped support plates (4). Moving channels matching the moving rods (45) are provided on the U-shaped support plates (4). The moving channels are all communicated with the corresponding sliding grooves. A booster pump (5) is fixed on the top of the support plate one (3). The output end of the booster pump (5) is fixed with a four-way pipe (51). The other three ports on the four-way pipe (51) are correspondingly connected with an intake straight pipe (52) and two intake elbow pipes (53). One ends of the intake straight pipe (52) and the two intake elbow pipes (53) all penetrate the support plate one (3) and are connected to the top ends of the corresponding telescopic bellows (43). A clamping mechanism (6) is connected between the three U-shaped support plates (4). Above the booster pump (5), there is a support plate two (8) fixed on the inner wall of the U-shaped detection frame (1). A covering mechanism (7) is connected between the support plate two (8) and the support plate one (3). Two symmetrically arranged support plates three (9) are fixed on the inner wall of the U-shaped detection frame (1). A drying mechanism (10) is connected between the two support plates three (9) and the U-shaped detection frame (1). The covering mechanism (7) includes a square-shaped lifting plate (701) slidably connected to the inner wall of the U-shaped detection frame (1). Two symmetrically arranged one-way lead screws (702) are helically connected to the square-shaped lifting plate (701). The bottom ends of the one-way lead screws (702) are rotatably connected to the top of the support plate one (3). The one-way lead screws (702) are all rotatably connected to the support plate two (8). Two symmetric connecting rods (703) are fixed to the bottom of the rectangular lifting plate (701). The other ends of the connecting rods (703) penetrate through the first support plate (3) and are connected to the tops of the corresponding movable cover plates (41). Movable holes matching the connecting rods (703) are formed in the first support plates (3). First bevel gears (704) are fixed to the tops of the unidirectional lead screws (702). A dual-axis motor (706) is fixed to the top of the second support plate (8). Second bevel gears (705) meshing with the corresponding first bevel gears (704) are fixedly connected to the two output shafts of the dual-axis motor (706); The drying mechanism (10) includes movable bases (1001) slidably connected to the top of the third support plate (9). Moving seats (1002) are fixed to the bottom ends of the movable bases (1001). Moving grooves matching the moving seats (1002) are formed in the tops of the third support plates (9). Reciprocating lead screws (1003) are helically connected to the moving seats (1002). The reciprocating lead screws (1003) are rotatably connected in the corresponding moving grooves. One ends of the reciprocating lead screws (1003) extend to the outside of the U-shaped detection frame (1) and are fixedly connected with belt pulleys (1004). A transmission belt (1005) is connected in a transmission manner between the two belt pulleys (1004); A driving motor (1006) is fixed to the right side wall of the U-shaped detection frame (1). One end of one of the reciprocating lead screws (1003) extends to the outside of the U-shaped detection frame (1) and is connected to the output shaft of the driving motor (1006). Fixed cylinders (1007) are fixed to the tops of the movable bases (1001). Piston plates (1008) are slidably and sealingly connected to the inner walls of the fixed cylinders (1007). Piston rods (1009) are fixed to one side walls of the piston plates (1008); Rotating shafts (1010) are rotatably connected to the movable bases (1001). Turntables (1011) are fixed to one ends of the rotating shafts (1010), and gears (1012) are fixedly connected to the other ends. Rack bars (1013) meshing with the gears (1012) are fixed to the third support plates (9). Push-pull rods (1014) are hinged to the edges of the surfaces of the turntables (1011). One ends of the piston rods (1009) penetrate through the corresponding fixed cylinders (1007) and are hinged to one ends of the corresponding push-pull rods (1014); Sprayers (1015) are fixed to the air outlet ports of the fixed cylinders (1007). Air inlet pipes (1016) are fixed to the air inlet ports of the fixed cylinders (1007). Heating wires (1017) are fixedly connected to the outside of the air inlet pipes (1016). One-way exhaust valves (1018) are installed at the air outlet ports of the fixed cylinders (1007). One-way inlet valves (1019) are installed at the air inlet ports of the fixed cylinders (1007).

2. A full-automatic leak detection device for an inner box body of a diaphragm gas meter according to claim 1, characterized in that The clamping mechanism (6) includes two symmetrical clamping plates (601) which are both slidably connected to the U-shaped support plate (4). Sliding seats (602) are fixed to the bottom ends of the clamping plates (601), and sliding grooves matching with the two sliding seats (602) are formed in the inner bottom surface of the U-shaped support plate (4).

3. The full-automatic leak detection device for the inner box body of a diaphragm gas meter according to claim 2, characterized in that, the two sliding seats (602) in the same sliding groove are spirally connected with the same bidirectional lead screw (603), and the bidirectional lead screw (603) is rotatably connected in the corresponding sliding groove.

4. The full-automatic leak detection device for the inner box body of a diaphragm gas meter according to claim 3, characterized in that, both ends of the middle bidirectional lead screw (603) extend to the outside of the corresponding U-shaped support plate (4) and are fixedly connected with connecting shafts (605). One end of each of the remaining two bidirectional lead screws (603) extends to the outside of the corresponding U-shaped support plate (4) and is connected to one end of the corresponding connecting shaft (605). One end of the left bidirectional lead screw (603) extends to the outside of the corresponding U-shaped support plate (4) and is fixedly connected with a knob block (604).

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