A fully automatic valve testing line

Abstract

The invention aims to provide a fully automatic valve inspection line that performs one-stop inspection of valve air flow, air tightness and mechanical properties. The invention can effectively improve inspection efficiency, save labor costs and improve inspection accuracy. The invention comprises a machine base (1), on which a conveyor belt group is arranged, and on the machine base (1) along the conveying direction of the conveyor belt group, an automatic valve flow inspection station (3), an automatic valve leak detection station (4) and an automatic valve mechanical property inspection station (5) are arranged in sequence. The invention is applicable to the field of valve inspection.

Description

Technical Field

[0001] The invention relates to a fully automatic valve detection line. Background Art

[0002] When manufacturing and processing gas valves, it is necessary to test the valve air flow, air tightness and mechanical properties. In the past, the air flow, air tightness and mechanical properties of the valves were tested separately, and the valves needed to be manually moved back and forth between the testing stations, which was inefficient. In addition, the separate tests made it easy for the valve test data to be confused, and the test accuracy could not be guaranteed. Summary of the invention

[0003] The technical problem to be solved by the invention is to overcome the deficiencies of the prior art and provide a fully automatic valve testing line that performs one-stop testing of valve air flow, air tightness and mechanical properties. The invention can effectively improve testing efficiency, save labor costs and improve testing accuracy.

[0004] The technical solution adopted by the invention is: the invention includes a machine base, on which a conveyor belt group is arranged, and on the machine base, a valve flow automatic detection station, a valve automatic leakage detection station and a valve mechanical performance automatic detection station are arranged in sequence along the conveying direction of the conveyor belt group.

[0005] The conveyor belt group includes a first conveyor belt and a second conveyor belt which are arranged horizontally and parallel to each other, a distance is left between the first conveyor belt and the second conveyor belt, and the bottoms of both sides of the external valve placement plate are respectively placed on the first conveyor belt and the second conveyor belt.

[0006] The machine base is also provided with several groups of valve placement plate positioning mechanisms corresponding to the valve flow automatic detection platform, the valve automatic leakage detection platform and the valve mechanical property automatic detection platform respectively. The several groups of valve placement plate positioning mechanisms are sequentially placed between the first conveyor belt and the second conveyor belt. The valve placement plate positioning mechanism includes a pneumatic lifting baffle and a placement plate pneumatic lifting column group. The placement plate pneumatic lifting column group is adapted to be arranged between the first conveyor belt and the second conveyor belt. The two pneumatic lifting baffles are respectively arranged at the front and rear of the placement plate pneumatic lifting column group.

[0007] The valve flow automatic detection station includes a pneumatic valve power supply seat, a pneumatic valve inlet and outlet joint seat, a valve twist switch and a flow detection and analysis machine respectively arranged on the machine seat. The pneumatic valve power supply seat is placed on the right side of the first conveyor belt, the pneumatic valve inlet and outlet joint seat is placed on the left side of the second conveyor belt, the valve twist switch is placed above the pneumatic lifting column group of the placement plate, and the flow detection and analysis machine is connected to the pneumatic valve inlet and outlet joint seat.

[0008] The automatic valve leak detection platform includes a pneumatic clamp positioning air supply seat, a pneumatic energized sealing seat, and a valve switch shaft rotator. The pneumatic clamp positioning air supply seat is placed on the left side of the second conveyor belt, the pneumatic energized sealing seat is placed on the right side of the first conveyor belt, and the valve switch shaft rotator is placed above the pneumatic lifting column group of the placement plate.

[0009] The automatic detection platform for valve mechanical properties includes a valve switch shaft pressure detection seat, a valve switch shaft torsion seat, a lifting CCD detection seat and a pneumatic valve nozzle alignment detection seat. The valve switch shaft pressure detection seat, the valve switch shaft torsion seat and the lifting CCD detection seat are all placed on the left side of the second conveyor belt and are all placed above the pneumatic lifting column group of the placement plate. The pneumatic valve nozzle alignment detection seat is respectively placed on the left side of the second conveyor belt and on the right side of the first conveyor belt.

[0010] The beneficial effects of the invention are as follows: the invention adopts the valve flow automatic detection platform, valve automatic leakage detection platform and valve mechanical performance automatic detection platform to successively detect the flow rate and air tightness of the valve and the force, reset force and rotation position of the valve switch shaft. The valve is transported by the conveyor belt group during the whole detection process, and the valve is positioned at each detection station by the valve placement plate positioning mechanism. Therefore, the whole detection process is free of manual operation, saving labor costs, and at the same time improving detection efficiency and detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a side schematic diagram of the overall position structure of the invention;

[0012] Figure 2 It is a schematic diagram of the overall structure of the valve flow automatic detection station in the invention from top view;

[0013] Figure 3 It is a side schematic diagram of the overall structure of the valve twist switch of the valve flow automatic detection station in the invention;

[0014] Figure 4 It is a schematic diagram of the overall structure of the automatic valve leak detection platform in the invention;

[0015] Figure 5 It is a schematic top view of the overall structure of the valve switch shaft rotator of the valve automatic leak detection station in the invention;

[0016] Figure 6 It is a schematic top view of the overall position structure of the automatic detection platform for mechanical properties of valves in the invention;

[0017] Figure 7 It is a schematic side view of the overall structure of the valve switch shaft pressure detection seat of the valve mechanical performance automatic detection platform in the invention;

[0018] Figure 8 It is a schematic side view of the overall structure of the valve switch shaft torsion seat of the valve mechanical performance automatic detection platform in the invention;

[0019] Fig. 9 It is a schematic side view of the overall structure of the lifting CCD detection seat of the automatic detection platform for mechanical properties of valves in the invention;

[0020] Fig.10 It is a schematic top view of the overall structure of a pneumatic valve nozzle alignment detection seat of an automatic valve mechanical property detection platform in the invention. DETAILED DESCRIPTION

[0021] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 As shown, the invention comprises a machine base 1, on which a conveyor belt group is arranged, and on the machine base 1, a valve flow automatic detection station 3, a valve automatic leakage detection station 4 and a valve mechanical performance automatic detection station 5 are arranged in sequence along the conveying direction of the conveyor belt group.

[0022] The conveyor belt group includes a first conveyor belt 11 and a second conveyor belt 12 which are arranged horizontally and parallel to each other, a distance is left between the first conveyor belt 11 and the second conveyor belt 12, and the bottoms of both sides of the external valve placement plate are respectively placed on the first conveyor belt 11 and the second conveyor belt 12.

[0023] The machine base 1 is also provided with several groups of valve placement plate positioning mechanisms corresponding to the valve flow automatic detection platform 3, the valve automatic leakage detection platform 4 and the valve mechanical performance automatic detection platform 5. The several groups of valve placement plate positioning mechanisms are sequentially placed between the first conveyor belt 11 and the second conveyor belt 12. The valve placement plate positioning mechanism includes a pneumatic lifting baffle 21 and a placement plate pneumatic lifting column group 22. The placement plate pneumatic lifting column group 22 is adapted to be arranged between the first conveyor belt 11 and the second conveyor belt 12. The two pneumatic lifting baffles 21 are respectively arranged in front and behind the placement plate pneumatic lifting column group 22. In this specific embodiment, the pneumatic lifting baffles 21 are all provided with infrared sensing modules for sensing the valve placement plate and the valve in place. The first pneumatic lifting baffle 21 senses the arrival of the sensing valve placement plate and then descends to allow the valve placement plate to pass. When the valve placement plate reaches above the placement plate pneumatic lifting column group 22, the second pneumatic lifting baffle 21 senses the sensing valve placement plate and rises to block the valve placement plate. At the same time, the first pneumatic lifting baffle 21 rises, and then the placement plate pneumatic lifting column group 22 drives the valve placement plate to rise to a preset height, so that the valve reaches the preset height of the work station.

[0024] The valve flow automatic detection station 3 includes a pneumatic valve power supply seat 31, a pneumatic valve inlet and outlet joint seat 32, a valve twist switch 33 and a flow detection and analysis machine 34 respectively arranged on the machine seat 1. The pneumatic valve power supply seat 31 is placed on the right side of the first conveyor belt 11, the pneumatic valve inlet and outlet joint seat 32 is placed on the left side of the second conveyor belt 12, the valve twist switch 33 is placed above the pneumatic lifting column group 22 of the placement plate, and the flow detection and analysis machine 34 is connected to the pneumatic valve inlet and outlet joint seat 32. The pneumatic valve power supply seat 31 includes a first seat plate 311 arranged on the machine base 1, and the first seat plate 311 is placed on the right side of the first conveyor belt 11. The first seat plate 311 is respectively provided with a first sliding rail 313 and a first telescopic cylinder 314. The first sliding rail 313 is adapted to be movably provided with a first sliding block 315, and the first sliding block 315 is connected to the output end of the first telescopic cylinder 314. The first sliding block 315 is provided with a valve electrical connector 316.

[0025] The pneumatic valve inlet and outlet air joint seat 32 includes a second sliding rail 321, a second telescopic cylinder 322 and an inlet and outlet air generator 326 arranged on the machine base 1. The second sliding rail 321 is placed on the left side of the second conveyor belt 12. A second sliding block 323 is adapted to slide on the second sliding rail 321. The second sliding block 323 is connected to the output end of the second telescopic cylinder 322. The second sliding block 323 is respectively provided with an inlet head 324 and an outlet head 325. The inlet head 324 and the outlet head 325 are respectively connected to the inlet and outlet air generator 326. Gas flow sensing modules are respectively provided on the outlet end and the inlet end of the inlet and outlet air generator 326. The gas flow sensing module is connected to the flow detection and analysis machine 34.

[0026] The valve twist switch 33 includes a first support frame 331 vertically arranged on the machine base 1, the first support frame 331 is placed on one side of the second sliding track 321, a transverse plate is arranged on the top of the first support frame 331, a first lifting cylinder 332 is arranged at the bottom of the transverse plate, a first rotating motor 334 is arranged at the bottom of the output end of the first lifting cylinder 332, a valve rotating rod rotating head 333 is arranged on the output end of the first rotating motor 334, the valve rotating rod rotating head 333 is placed above the first conveyor belt 11 and the second conveyor belt 12 and corresponds to the external valve placement plate. A valve rotating rod clamp 327 is also arranged on the second sliding block 323.

[0027] The valve is placed on the valve placement plate, and the valve placement plate reaches the pneumatic lifting column group 22 of the placement plate under the drive of the first conveyor belt 11 and the second conveyor belt 12. When the valve placement plate passes through the first pneumatic lifting baffle 21, it is sensed by the infrared sensing module, and then the second pneumatic lifting baffle 21 rises to stop the valve placement plate, and then the first pneumatic lifting baffle 21 also rises to prevent the next placement plate from entering, and at the same time, the first conveyor belt 11 and the second conveyor belt 12 also stop running. The pneumatic lifting column group 22 of the placement plate lifts the valve placement plate to a preset height, and then the valve electrical connector 316 is driven by the first telescopic cylinder 314 to connect to the power connection of the valve, so that the valve is energized. At the same time, the clamping end of the valve stem clamp 327 clamps the stem laterally under the drive of the second telescopic cylinder 322, thereby playing a secondary positioning role. The air inlet head 324 and the air outlet head 325 are also respectively connected to the air inlet and the air outlet of the valve under the drive of the second telescopic cylinder 322. Finally, the valve stem rotating head 333 descends under the drive of the first lifting cylinder 332 and is adapted to be clamped on the top of the valve stem.

[0028] Then the inlet and outlet gas generator 326 inflates the valve through the inlet head 324. During the process, the valve stem rotating head 333 rotates at a preset speed driven by the first rotating motor 334, thereby twisting the valve stem. As the valve stem rotates, the gas in the valve flows back to the inlet and outlet gas generator 326 through the outlet head 325. During the entire process of the valve stem twisting and switching, the gas flow data of the gas flow sensing module is transmitted to the flow detection and analysis machine 34 for flow analysis, thereby achieving the purpose of gas flow detection.

[0029] After the detection is completed, all components are reset, and the valve placement plate is transported away by the first conveyor belt 11 and the second conveyor belt 12 .

[0030] The valve automatic leakage detection platform 4 includes a pneumatic clamp positioning air supply seat 41, a pneumatic energized sealing seat 42, and a valve switch shaft rotator 43. The pneumatic clamp positioning air supply seat 41 is placed on the left side of the second conveyor belt 12, the pneumatic energized sealing seat 42 is placed on the right side of the first conveyor belt 11, and the valve switch shaft rotator 43 is placed above the pneumatic lifting column group 22 of the placement plate.

[0031] The pneumatic clamping positioning air supply seat 41 includes a base plate 411 arranged on the machine base 1, and the base plate 411 is arranged on the left side of the second conveyor belt 12. The base plate 411 is respectively provided with a third pushing cylinder 412 and a third slide rail 413, and the third slide rail 413 is adapted to slide with a third slider 414, and the third slider 414 is connected to the output end of the third pushing cylinder 412. The third slider 414 is provided with a valve shaft clamping head 415 and an air supply head 416, and the air supply head 416 is connected to the air source machine 417 arranged on the machine base 1, and the valve shaft clamping head 415 and the air supply head 416 correspond to the pneumatic lifting column group 22 of the placement plate.

[0032] The pneumatic energized sealing seat 42 includes a seat plate 421 arranged on the machine base 1, and the seat plate 421 is arranged on the right side of the first conveyor belt 11. The fourth pushing cylinder 422, the fifth pushing cylinder 423 and the sixth pushing cylinder 424 are movably arranged side by side in sequence on the seat plate 421. A valve energizing head 4221 is arranged on the output end of the fourth pushing cylinder 422, a first air nozzle plug 425 is arranged on the output end of the fifth pushing cylinder 423, and a second air nozzle plug 426 is arranged on the sixth pushing cylinder 424. The first air nozzle plug 425 and the second air nozzle plug 426 are both provided with airflow sensing modules, and the airflow sensing module is connected to the airflow analyzer 427 arranged on the machine base 1.

[0033] The valve switch shaft rotator 43 includes a second support frame 431 vertically arranged on the machine base 1, the second support frame 431 is placed on one side of the base plate 411, a transverse plate is arranged on the top of the second support frame 431, a second lifting cylinder 432 is arranged at the bottom of the transverse plate, a second rotating motor 434 is arranged at the bottom of the output end of the second lifting cylinder 432, a valve switch shaft rotating head 433 is arranged on the output end of the second rotating motor 434, and the valve switch shaft rotating head 433 is placed above the pneumatic lifting column group 22 of the placement plate.

[0034] The valve is placed on the valve placement plate, and the valve placement plate reaches the pneumatic lifting column group 22 of the placement plate under the drive of the first conveyor belt 11 and the second conveyor belt 12. When the valve placement plate passes through the first pneumatic lifting baffle 21, it is sensed by the infrared sensing module, and then the second pneumatic lifting baffle 21 rises to stop the valve placement plate, and then the first pneumatic lifting baffle 21 also rises to prevent the next placement plate from entering. At the same time, the first conveyor belt 11 and the second conveyor belt 12 also stop running, and the pneumatic lifting column group 22 of the placement plate lifts the valve placement plate to a preset height. Then, the valve shaft clamping head 415 clamps the valve shaft horizontally under the push of the third push cylinder 412, and the air supply head 416 is connected to the air inlet of the valve under the push of the third push cylinder 412. At the same time, the valve power supply head 4221 is also connected to the power supply port of the valve under the push of the fourth push cylinder 422, so that the valve is powered, and the first gas nozzle plug 425 and the second gas nozzle plug 426 are also respectively connected to the two gas nozzles of the valve under the push of their respective push cylinders. The valve switch shaft rotating head 433 is driven by the second lifting cylinder 432 to descend and fit on the top of the valve shaft. The air delivery head 416 delivers air into the valve, and the valve switch shaft rotating head 433 rotates the valve switch shaft at a preset speed under the drive of the second rotating motor 434. During the rotation of the valve switch shaft, the air flow sensing modules in the first air nozzle plug 425 and the second air nozzle plug 426 sense whether there is air flow out of the valve air nozzle, and transmit the data to the air flow analyzer 427. After the detection is completed, each component is reset, and the valve placement plate is transported away by the first conveyor belt 11 and the second conveyor belt 12.

[0035] The valve mechanical property automatic detection platform 5 includes a valve switch shaft pressure detection seat 51, a valve switch shaft torsion seat 52, a lifting CCD detection seat 53 and a pneumatic valve nozzle alignment detection seat 54. The valve switch shaft pressure detection seat 51, the valve switch shaft torsion seat 52 and the lifting CCD detection seat 53 are all placed on the left side of the second conveyor belt 12 and above the pneumatic lifting column group 22 of the placement plate. The pneumatic valve nozzle alignment detection seat 54 is respectively placed on the left side of the second conveyor belt 12 and on the right side of the first conveyor belt 11. The valve switch shaft pressure detection seat 51 includes a third support frame 511 vertically arranged on the machine base 1, a third lifting cylinder 512 is arranged on the third support frame 511, a valve switch shaft pressure head 513 is arranged at the bottom of the output end of the third lifting cylinder 512, a pressure sensing module is arranged on the valve switch shaft pressure head 513, and the valve switch shaft pressure head 513 is placed above the pneumatic lifting column group 22 of the placement plate. The third lifting cylinder 512 drives the valve switch shaft pressure head 513 to descend, so that the valve switch shaft pressure head 513 contacts and presses the valve switch shaft downward, thereby testing whether the pressure and reset force of the valve switch shaft meet the standards. After the test is completed, the valve switch shaft pressure head 513 is reset, and the valve is transported to the next station.

[0036] The valve switch shaft twisting seat 52 includes a fourth support frame 521 vertically arranged on the machine base 1, a fourth lifting cylinder 522 is arranged on the fourth support frame 521, a third rotating motor 524 is arranged at the bottom of the output end of the fourth lifting cylinder 522, a second valve switch shaft rotating head 525 is arranged on the output end of the third rotating motor 524, and the second valve switch shaft rotating head 525 is placed above the pneumatic lifting column group 22 of the placement plate. The second valve switch shaft rotating head 525 is driven by the fourth lifting cylinder 522 to drop to the top of the valve switch shaft and clamp the valve switch shaft, and then rotates the valve switch shaft driven by the third rotating motor 524. After completion, the valve is reset and transported to the next station.

[0037] The lifting CCD detection seat 53 includes a pneumatic lifting platform 531 and a fifth support frame 532. The pneumatic lifting platform 531 is movably set on the machine base 1 and placed at the bottom of the pneumatic lifting column group 22 of the placement plate. The fifth support frame 532 is provided with a first high-definition industrial camera 533 and a second high-definition industrial camera 534 placed above the pneumatic lifting platform 531. The first high-definition industrial camera 533 and the second high-definition industrial camera 534 are placed at the same horizontal height, and the shooting direction of the first high-definition industrial camera 533 is perpendicular to the shooting direction of the second high-definition industrial camera 534. When the valve placement plate is driven by the conveyor belt to descend and the valve is sent to the pneumatic lifting column group 22 of the placement plate, the pneumatic lifting platform 531 rises and lifts the valve to the same level as the first high-definition industrial camera 533 and the second high-definition industrial camera 534. The first high-definition industrial camera 533 and the second high-definition industrial camera 534 transmit the two-side views of the valve to the proofreader set on the machine base 1. The proofreader analyzes and proofreads the image to detect whether the appearance position of the valve is still in the standard state after pressing the switch shaft and rotating the switch shaft. After completion, the pneumatic lifting platform 531 is reset and the valve is sent to the next station.

[0038] The pneumatic valve air nozzle alignment detection seat 54 includes a first pneumatic telescopic air nozzle plug 541 and a second pneumatic telescopic air nozzle plug 542 arranged on the machine seat 1. The first pneumatic telescopic air nozzle plug 541 is suitable for being arranged on the left side of the second conveyor belt 12, and the second pneumatic telescopic air nozzle plug 542 is suitable for being arranged on the right side of the first conveyor belt 11. In this specific embodiment, the first pneumatic telescopic air nozzle plug 541 and the second pneumatic telescopic air nozzle plug 542 are respectively provided with an angle position sensing module. When the valve is sent to the workstation, the first pneumatic telescopic air nozzle plug 541 and the second pneumatic telescopic air nozzle plug 542 are respectively extended and connected to the air nozzle of the valve to detect whether the position angle of the valve air nozzle is at the standard value.

[0039] The invention is applicable to the field of valve detection.

Claims

1. A fully automatic valve testing line, characterized by: It comprises a machine base (1), on which a conveyor belt group is arranged, and on which a valve flow automatic detection platform (3), a valve automatic leakage detection platform (4) and a valve mechanical property automatic detection platform (5) are arranged in sequence along the conveying direction of the conveyor belt group. The conveyor belt group comprises a first conveyor belt (11) and a second conveyor belt (12) which are arranged horizontally and parallel to each other, a spacing is left between the first conveyor belt (11) and the second conveyor belt (12), and the bottoms of both sides of the external valve placement plate are respectively placed on the first conveyor belt (11) and the second conveyor belt (12); The machine base (1) is also provided with a plurality of groups of valve placement plate positioning mechanisms corresponding to the valve flow automatic detection platform (3), the valve automatic leakage detection platform (4) and the valve mechanical property automatic detection platform (5), respectively. The plurality of groups of valve placement plate positioning mechanisms are sequentially placed between the first conveyor belt (11) and the second conveyor belt (12), and the valve placement plate positioning mechanisms include a pneumatic lifting baffle plate (21) and a placement plate pneumatic lifting column group (22). The placement plate pneumatic lifting column group (22) is adapted to be arranged between the first conveyor belt (11) and the second conveyor belt (12), and the two pneumatic lifting baffle plates (21) are respectively arranged at the front and rear of the placement plate pneumatic lifting column group (22); The valve flow automatic detection platform (3) comprises a pneumatic valve power supply seat (31), a pneumatic valve inlet and outlet joint seat (32), a valve twist switch (33) and a flow detection and analysis machine (34) which are respectively arranged on the machine seat (1), the pneumatic valve power supply seat (31) is placed on the right side of the first conveyor belt (11), the pneumatic valve inlet and outlet joint seat (32) is placed on the left side of the second conveyor belt (12), the valve twist switch (33) is placed above the pneumatic lifting column group (22) of the placement plate, and the flow detection and analysis machine (34) is connected to the pneumatic valve inlet and outlet joint seat (32); The valve automatic leak detection platform (4) comprises a pneumatic clamp positioning air supply seat (41), a pneumatic energized sealing seat (42), and a valve switch shaft rotator (43); the pneumatic clamp positioning air supply seat (41) is placed on the left side of the second conveyor belt (12), the pneumatic energized sealing seat (42) is placed on the right side of the first conveyor belt (11), and the valve switch shaft rotator (43) is placed above the pneumatic lifting column group (22) of the placement plate; The pneumatic valve power supply seat (31) comprises a first seat plate (311) arranged on the machine base (1), the first seat plate (311) being placed on the right side of the first conveyor belt (11), the first seat plate (311) being respectively provided with a first sliding track (313) and a first telescopic cylinder (314), the first sliding track (313) being movably provided with a first sliding block (315), the first sliding block (315) being connected to an output end of the first telescopic cylinder (314), and the first sliding block (315) being provided with a valve electrical connector (316); The pneumatic valve air inlet and outlet joint seat (32) comprises a second sliding track (321), a second telescopic cylinder (322) and an air inlet and outlet generator (326) arranged on the machine seat (1); the second sliding track (321) is placed on the left side of the second conveyor belt (12); a second sliding block (323) is slidably arranged on the second sliding track (321); the second sliding block (323) is connected to the output end of the second telescopic cylinder (322); the second sliding block (323) is respectively provided with an air inlet head (324) and an air outlet head (325); the air inlet head (324) and the air outlet head (325) are respectively connected to the air inlet and outlet generator (326); a gas flow sensing module is respectively arranged on the air outlet end and the air inlet end of the air inlet and outlet generator (326); the gas flow sensing module is connected to the flow detection and analysis machine (34); The valve twist switch (33) comprises a first support frame (331) vertically arranged on the machine base (1), the first support frame (331) being placed on one side of the second sliding track (321), a transverse plate being arranged on the top of the first support frame (331), a first lifting cylinder (332) being arranged on the bottom of the transverse plate, a first rotating motor (334) being arranged on the bottom of the output end of the first lifting cylinder (332), a valve rotating rod rotating head (333) being arranged on the output end of the first rotating motor (334), the valve rotating rod rotating head (333) being placed above the first conveyor belt (11) and the second conveyor belt (12) and corresponding to the external valve placement plate, and a valve rotating rod clamp (327) being arranged on the second sliding block (323); The pneumatic clamping positioning air supply seat (41) comprises a base plate (411) arranged on the machine base (1), the base plate (411) being arranged on the left side of the second conveyor belt (12), the base plate (411) being respectively provided with a third pushing cylinder (412) and a third slide rail (413), the third slide rail (413) being adapted to be slidably provided with a third slider (414), the third slider (414) being connected to the output end of the third pushing cylinder (412), the third slider (414) being provided with a valve shaft clamping head (415) and an air supply head (416), the air supply head (416) being connected to an air source machine (417) arranged on the machine base (1), the valve shaft clamping head (415) and the air supply head (416) corresponding to the placement plate pneumatic lifting column group (22); The pneumatic energized sealing seat (42) comprises a seat plate (421) arranged on the machine base (1), the seat plate (421) being arranged on the right side of the first conveyor belt (11), a fourth pushing cylinder (422), a fifth pushing cylinder (423) and a sixth pushing cylinder (424) being movably arranged side by side in sequence on the seat plate (421), a valve energizing head (4221) being arranged on the output end of the fourth pushing cylinder (422), a first air nozzle plug (425) being arranged on the output end of the fifth pushing cylinder (423), a second air nozzle plug (426) being arranged on the sixth pushing cylinder (424), an air flow sensing module being arranged on the first air nozzle plug (425) and the second air nozzle plug (426), the air flow sensing module being connected to an air flow analyzer (427) arranged on the machine base (1); The valve switch shaft rotator (43) comprises a second support frame (431) vertically arranged on the machine base (1); the second support frame (431) is placed on one side of the base plate (411); a transverse plate is arranged on the top of the second support frame (431); a second lifting cylinder (432) is arranged at the bottom of the transverse plate; a second rotating motor (434) is arranged at the bottom of the output end of the second lifting cylinder (432); a valve switch shaft rotating head (433) is arranged on the output end of the second rotating motor (434); and the valve switch shaft rotating head (433) is placed above the pneumatic lifting column group (22) of the placement plate.

2. The fully automatic valve inspection line according to claim 1 is characterized by: The valve mechanical property automatic detection platform (5) comprises a valve switch shaft pressure detection seat (51), a valve switch shaft torsion seat (52), a lifting type CCD detection seat (53) and a pneumatic valve nozzle alignment detection seat (54); the valve switch shaft pressure detection seat (51), the valve switch shaft torsion seat (52) and the lifting type CCD detection seat (53) are all placed on the left side of the second conveyor belt (12) and are all placed above the pneumatic lifting column group (22) of the placement plate; the pneumatic valve nozzle alignment detection seat (54) is respectively placed on the left side of the second conveyor belt (12) and on the right side of the first conveyor belt (11).

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