A table type dangerous liquid measuring instrument

Abstract

The application belongs to the technical field of dangerous liquid detection, and specifically relates to a table type dangerous liquid measuring instrument, which comprises a double-layer chain plate conveying device, an automatic pressure adjusting box one, an automatic pressure adjusting box two, an infrared induction push plate group, a push plate group, a fine measurement glass cover and a coarse measurement glass cover. The automatic pressure adjusting box one is arranged on one side of the double-layer chain plate conveying device, the automatic pressure adjusting box two is arranged on the other side of the double-layer chain plate conveying device, the infrared induction push plate group is arranged on the automatic pressure adjusting box one, the push plate group is arranged on the automatic pressure adjusting box two, the fine measurement glass cover is arranged on the automatic pressure adjusting box one, and the coarse measurement glass cover is arranged on the automatic pressure adjusting box two. The application is based on the positive correlation between the boiling point of a liquid and air pressure, and the different dielectric coefficients of liquids result in different induction electric fields. The application has the advantages of fast detection speed, convenient operation and reliable principle.

Description

Technical Field

[0001] This invention belongs to the field of hazardous liquid detection technology, specifically referring to a benchtop hazardous liquid measuring instrument. Background Technology

[0002] To prevent terrorist attacks on high-traffic areas such as airports, train stations, and squares, governments worldwide are continuously strengthening security checks in various public places. Most baggage checks utilize X-ray security technology; however, X-rays are harmful to the human body, especially to security personnel who are often exposed to them all day. Furthermore, when there are large crowds, traditional desktop scanners require checking each cup individually, which is inefficient and prone to errors. Summary of the Invention

[0003] This invention discloses a benchtop hazardous liquid measuring instrument. To address the radioactive hazards of X-ray security checks and the low detection efficiency during high-traffic periods, this invention creatively combines the principle of the positive correlation between liquid boiling point and air pressure with the characteristic that liquid boiling point decreases under low pressure. This invention proposes an automatically adjusting pressure chamber equipped with an automatic pressure regulating mechanism. At room temperature, the pressure within a closed space can be adjusted to the boiling pressure of water at that temperature. This mechanism allows for comparative testing of large batches of liquids. Furthermore, since the boiling points of many hazardous liquids differ significantly from water, most types of hazardous liquids can be screened out. Simultaneously, for some questionable liquids, this invention utilizes the characteristic that liquids with different dielectric constants will induce electric fields of varying intensities to establish a precision measuring mechanism for accurate measurement.

[0004] The technical solution adopted by this invention is as follows: This invention provides a benchtop hazardous liquid measuring instrument, comprising a double-layer chain conveyor, an automatic pressure regulating chamber one, an automatic pressure regulating chamber two, an infrared sensing push plate assembly, a push plate assembly, a precision measuring glass cover, and a coarse measuring glass cover. The automatic pressure regulating chamber one is located on one side of the double-layer chain conveyor, and the automatic pressure regulating chamber two is located on the other side of the double-layer chain conveyor. The infrared sensing push plate assembly is located on the automatic pressure regulating chamber one, the push plate assembly is located on the automatic pressure regulating chamber two, the precision measuring glass cover is located on the automatic pressure regulating chamber one, and the coarse measuring glass cover is located on the automatic pressure regulating chamber two.

[0005] As a further embodiment of the present invention, the automatically regulating air pressure box includes a box body, a rectangular groove, a pressure sensor, a slide rail, a slide rail, a cubic accommodating space, a rectangular groove, a circuit connector, a circuit connector, a pause-type lifting mechanism, a perforated baffle, an air pump, and an automatically regulating air pressure mechanism. The box body is located on one side of the double-layer chain conveyor device. The rectangular groove is located on the top of the box body. The pressure sensor is located inside the rectangular groove. The slide rail is located on the top of the box body. The slide rail is located on one side of the box body. The cubic accommodating space... The rectangular groove 2 is located inside the box body and is located at the top of the box body. The rectangular groove 2 surrounds the top edge of the cubic receiving space. The circuit connector 1 is located on one side wall of the rectangular groove 2 and the circuit connector 2 is located on the other side wall of the rectangular groove 2. The pause-type lifting mechanism is located on the box body. The perforated baffle is fixedly located in the cubic receiving space. The air pump is located in the cubic receiving space. The automatic pressure regulating mechanism is located in the cubic receiving space. The automatic pressure regulating box 1 and the automatic pressure regulating box 2 have the same structure.

[0006] Further, the pause-type lifting mechanism includes a rotating shaft 1, a cam assembly 1, a rotating shaft 2, a cam assembly 2, a gear 1, a gear 2, a slide frame, a rack 1, a rack 2, a connecting rod 1, a large gear, a connecting rod 2, a sector-shaped turntable, a slide rail, a stop block 1, a stop block 2, a toothed belt, a connecting rod 3, a rocker arm, and a motor 3. The rotating shaft 1 is mounted through the housing, the cam assembly 1 is fixedly mounted on the rotating shaft 1, the rotating shaft 2 is mounted through the housing, the cam assembly 2 is fixedly mounted on the rotating shaft 2, the gear 1 is fixedly mounted at one end of the rotating shaft 1, the gear 2 is fixedly mounted at one end of the rotating shaft 2, the slide frame is mounted on the slide rail 2, the rack 1 is mounted at one lower end inside the slide frame, the rack 2 is mounted at the other upper end inside the slide frame, the rack 1 meshes with the gear 1, the rack 2 meshes with the gear 2, one end of the connecting rod 1 is hinged to the lower side of the slide frame, and the large gear... Located on one side of the housing, the second connecting rod is fixedly mounted on the large gear, with one end of the second connecting rod hinged to the other end of the first connecting rod. The fan-shaped turntable is located on one side of the housing, below the large gear. The slide rail is located on the arc surface of the fan-shaped turntable. The first stop block is fixedly mounted on one end of the slide rail, and the second stop block is fixedly mounted on the other end of the slide rail. The toothed belt is slidably mounted on the slide rail. One end of the third connecting rod is hinged to the fan-shaped turntable, and one end of the rocker arm is hinged to the other end of the third connecting rod. The third motor is located on one side of the housing, with its output end fixedly connected to the other end of the rocker arm. This pause-type lifting mechanism is designed to lift the iron upper plate that is embedded in the rectangular groove two and maintain the lifted state for a certain period of time, creating conditions for the infrared sensing push plate group or the push plate group to push the iron upper plate back to the double-layer chain plate conveyor device.

[0007] Furthermore, the automatic pressure regulating mechanism includes a hollow column, a piston, a limiting baffle, a second pressure sensor, a spring, and a counterweight. The hollow column is located inside the cubic accommodating space, the piston is located inside the hollow column, the limiting baffle is located at the top of the hollow column, the second pressure sensor is located below the limiting baffle, the spring is located at the head of the piston, and the counterweight is located at the bottom of the piston. This automatic pressure regulating mechanism can use the weight of the counterweight and the pressure difference between the inside and outside of the equipment to control the operation of the equipment's air pump, and together with the output signal of the first pressure sensor, control the switching on and off of the air pump.

[0008] As a further embodiment of the present invention, the infrared sensing push plate assembly includes a cylinder and an L-shaped push plate. The cylinder is fixedly mounted on the housing, and the L-shaped push plate is mounted on a slide rail. One side of the L-shaped push plate is fixedly connected to the output end of the cylinder. The infrared sensing push plate assembly and the push plate assembly have the same structure.

[0009] Furthermore, the first automatically adjustable pressure box is equipped with an infrared receiver, and the second automatically adjustable pressure box is equipped with an infrared transmitter.

[0010] As a further embodiment of the present invention, the double-layer chain conveyor includes a base, a first sprocket assembly, a second sprocket assembly, a chain, an L-shaped hinge, a lower plate, an upper iron plate, and a clutch-type drive brake device. The base is located between an automatic regulating air pressure box and an automatic regulating air pressure box. The first sprocket assembly is located on one side of the base, and the second sprocket assembly is located on the other side of the base. One side of the chain engages with the first sprocket assembly, and the other side of the chain engages with the second sprocket assembly. One side of the L-shaped hinge is fixedly mounted on the chain, and the lower plate is located on the other side of the L-shaped hinge. The upper iron plate is slidably mounted on the lower plate. The clutch-type drive brake device is located on one side of the base, and its position corresponds to that of the first sprocket assembly.

[0011] Furthermore, the clutch-type drive braking device includes a housing, a slide rail three, an output shaft, a belt ring rod one, a belt ring rod two, a brake pad, a forward and reverse lead screw, a motor one, a clutch friction plate, a flywheel, a pressure plate, a diaphragm spring, and a motor two. The housing is located on one side of the base, the slide rail three is located on one side wall of the housing, one end of the output shaft is connected to a sprocket assembly one, the belt ring rod is sleeved on the output shaft, the belt ring rod two is sleeved on the output shaft, the belt ring rod two is farther away from the sprocket assembly one than the belt ring rod one, the brake pad is fixedly mounted on the belt ring rod one, and the forward and reverse lead screw passes through the belt ring rod one. A ring rod one, with the forward and reverse lead screws passing through it, is connected to a ring rod two. A motor one is mounted on the outer wall of the housing and is fixedly connected to one end of the forward and reverse lead screws. A clutch friction plate is located at the other end of the output shaft and engages with it. A flywheel is located on one side of the clutch friction plate, and a pressure plate is located on the other side, fixedly connected to the flywheel. A diaphragm spring is located between the clutch friction plate and the pressure plate, with its outer ring connected to the clutch friction plate. A second motor is located on one side of the flywheel, and its output end is fixedly connected to it. The purpose of the clutch-type drive braking device is to remove power to the sprocket and brake it without stopping the second motor. This device is controlled by a signal generated by an infrared receiver.

[0012] As a further embodiment of the present invention, the precision measuring glass cover includes an electric telescopic rod, an explosion-proof glass cover, an alternating power supply, an electrode plate, an electrode plate, a wire protection tube, a wire protection tube, a telescopic rod, a chassis, a limiting ring, a coil, a sealing ring, an insulating shaft, a high-precision ammeter, a brush, a brush, and a motor. One end of the electric telescopic rod is mounted on an automatically regulating pressure box, and the explosion-proof glass cover is fixedly mounted on the other end of the electric telescopic rod. The alternating power supply is located on the top of the explosion-proof glass cover. The electrode plate is located inside the explosion-proof glass cover on one side, and the electrode plate is located inside the explosion-proof glass cover on the opposite side. One end of the wire protection tube is fixedly mounted on the alternating power supply, and the other end of the wire protection tube is fixedly mounted on one side of the electrode plate. One end of the wire protection tube is fixedly mounted on the alternating power supply. The other end is fixed to one side of the second electrode plate. One end of the telescopic rod is located on the inner wall of the top of the explosion-proof glass cover. The base is fixed to the other side of the telescopic rod. The limiting ring is located on the telescopic rod. The coil is located on one side of the explosion-proof glass cover. The sealing ring is located on one side of the explosion-proof glass cover. One end of the insulating shaft is fixed to the coil. The insulating shaft passes through the sealing ring. The high-precision galvanometer is fixed to one side of the explosion-proof glass cover. The high-precision galvanometer is located above the coil. One end of the first brush is fixed to the input of the high-precision galvanometer. The other end of the first brush is in line-to-line contact with one end of the coil. One end of the second brush is fixed to the input of the high-precision galvanometer. The other end of the second brush is in line-to-line contact with the other end of the coil. The fourth motor is fixed to the lower surface of the high-precision galvanometer. The output end of the fourth motor is fixedly connected to the insulating shaft. This device uses an alternating power supply to generate an alternating electric field. Since the dielectric constant of the liquids is different, the induced electric field is also different, so the combined magnetic field generated on a certain side is also different. At this time, different liquids can be detected by using a rotating coil and a high-precision galvanometer.

[0013] As a further embodiment of the present invention, the coarse measuring glass cover includes an electric telescopic rod II and an explosion-proof glass cover II. One end of the electric telescopic rod II is mounted on an automatically adjusting air pressure box II, and the explosion-proof glass cover II is fixedly mounted on the other end of the electric telescopic rod II.

[0014] The beneficial effects achieved by the present invention using the above structure are as follows: The present invention provides a benchtop hazardous liquid measuring instrument, achieving the following beneficial effects:

[0015] (1) No need to remove the liquid from the bottle for testing, avoiding contact between security personnel and the liquid, thus improving the security of security checks.

[0016] (2) It can simultaneously detect large batches of liquids, which improves efficiency.

[0017] (3) The mechanism for detecting liquid boiling point in this invention can detect containers of different materials.

[0018] (4) The present invention is based on the positive correlation between the boiling point of a liquid and the gas pressure, and the different dielectric constants of liquids lead to different induced electric fields. It has fast detection speed, convenient operation and reliable principle.

[0019] (5) This invention creatively combines liquid detection and the relationship between liquid boiling point and gas pressure, which is novel and inventive. Attached Figure Description

[0020] Figure 1 This invention provides a schematic diagram of the overall structure of a benchtop hazardous liquid measuring instrument;

[0021] Figure 2 A cross-sectional view of an automatically regulating pressure box;

[0022] Figure 3 This is a schematic diagram of the overall structure of the pause-type lifting mechanism;

[0023] Figure 4 This is a schematic diagram of the overall structure of a clutch-type drive-brake device.

[0024] Figure 5 Exploded view of a clutch-type drive braking device;

[0025] Figure 6 This is a side view of a double-layer chain conveyor.

[0026] Figure 7 This is a partial structural diagram of a double-layer chain conveyor device.

[0027] Figure 8 This is a top view of the iron upper plate assembly;

[0028] Figure 9 This is a schematic diagram of the overall structure of the precision measurement glass cover;

[0029] Figure 10 This is a bottom view of the glass cover for precise measurement;

[0030] Figure 11 For precise measurement of the side view of the glass cover;

[0031] Figure 12 This is a top view of the box.

[0032] The components include: 1. Double-layer chain conveyor; 2. Base; 3. Sprocket assembly one; 4. Sprocket assembly two; 5. Chain; 6. L-shaped hinge; 7. Lower plate; 8. Iron upper plate; 9. Clutch-type drive brake device; 10. Box body; 11. Slide rail three; 12. Output shaft; 13. Ring rod one; 14. Ring rod two; 15. Brake pad; 16. Positive and negative lead screws; 17. Motor one; 18. Clutch friction plate; 19. Flywheel; 20. Pressure plate; 21. Diaphragm spring; 22. Motor two; 23. Automatically regulating air pressure box one; 24. 25. Automatically adjustable air pressure box II; 26. Box body; 27. Rectangular groove I; 28. Pressure sensor I; 29. ​​Slide rail I; 30. Slide rail II; 31. Cubic accommodating space; 32. Rectangular groove II; 33. Circuit connector I; 34. Circuit connector II; 35. Pause-type lifting mechanism; 36. Perforated baffle; 37. Air pump; 38. Automatically adjustable air pressure mechanism; 49. Rotating shaft I; 40. Cam assembly I; 41. Rotating shaft II; 42. Cam assembly II; 43. Gear I; 44. Gear II; 45. Sliding frame; 46. ​​Rack 1, 47. Rack 2, 48. Connecting Rod 1, 49. Large Gear, 50. Connecting Rod 2, 51. Sector Turntable, 52. Slide Rail, 53. Stop Block 1, 54. Stop Block 2, 55. Gear Belt, 56. Connecting Rod 3, 57. Rocker Arm, 58. Motor 3, 59. Hollow Column, 60. Piston, 61. Limiting Plate, 62. Pressure Sensor 2, 63. Spring, 64. Counterweight, 65. Infrared Sensing Push Plate Assembly, 66. Push Plate Assembly, 67. Cylinder, 68. L-shaped Push Plate, 69. Infrared Receiver, 60. Infrared Line transmitter, 70. Precision measuring glass cover, 71. Electric telescopic rod one, 72. Explosion-proof glass cover one, 73. Alternating power supply, 74. Electrode one, 75. Electrode two, 76. Wire protection tube one, 77. Wire protection tube two, 78. Telescopic rod, 79. Chassis, 80. Limiting ring, 81. Coil, 82. Sealing ring, 83. Insulating shaft, 84. High-precision galvanometer, 85. Brush one, 86. Brush two, 87. Motor four, 88. Coarse measuring glass cover, 89. Electric telescopic rod two, 90. Explosion-proof glass cover two.

[0033] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0034] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] like Figure 1 , Figure 2 , Figure 3 and Figure 12As shown, the present invention discloses a benchtop hazardous liquid measuring instrument, characterized in that it includes a double-layer chain conveyor device 1, an automatic pressure regulating chamber 1 23, an automatic pressure regulating chamber 24, an infrared sensing push plate assembly 64, a push plate assembly 65, a precision measuring glass cover 70, and a coarse measuring glass cover 88. The automatic pressure regulating chamber 1 23 is located on one side of the double-layer chain conveyor device 1, and the automatic pressure regulating chamber 24 is located on the other side of the double-layer chain conveyor device 1. The infrared sensing push plate assembly 64 is located on the automatic pressure regulating chamber 1 23, the push plate assembly 65 is located on the automatic pressure regulating chamber 24, the precision measuring glass cover 70 is located on the automatic pressure regulating chamber 1 23, and the coarse measuring glass cover 88 is located on the automatic pressure regulating chamber 24. The automatic pressure regulating chamber 23 includes a chamber body 25, a rectangular groove 26, a pressure sensor 27, a slide rail 28, a slide rail 29, a cubic storage space 30, a rectangular groove 21, a circuit connector 32, a circuit connector 23, a pause-type lifting mechanism 34, a perforated baffle 35, an air pump 36, and an automatic pressure regulating mechanism 37. The chamber body 25 is located on one side of the double-layer chain conveyor device 1. The rectangular groove 26 is located on the top of the chamber body 25. The pressure sensor 27 is located inside the rectangular groove 26. The slide rail 28 is located on the top of the chamber body 25. The slide rail 29 is located on one side of the chamber body 25. The cubic storage space 30... The rectangular groove 21 is located inside the housing 25. The rectangular groove 21 surrounds the top edge of the cubic receiving space 30. The circuit connector 1 32 is located on one side wall of the rectangular groove 2 31. The circuit connector 2 33 is located on the other side wall of the rectangular groove 2 31. The pause-type lifting mechanism 34 is located on the housing 25. The perforated baffle 35 is fixedly located inside the cubic receiving space 30. The air pump 36 is located inside the cubic receiving space 30. The automatic pressure regulating mechanism 37 is located inside the cubic receiving space 30. The automatic pressure regulating box 1 23 and the automatic pressure regulating box 2 24 have the same structure.The pause-type lifting mechanism 34 includes a first rotating shaft 38, a first cam assembly 39, a second rotating shaft 40, a second cam assembly 41, a first gear 42, a second gear 43, a sliding frame 44, a first rack 45, a second rack 46, a first connecting rod 47, a large gear 48, a second connecting rod 49, a sector-shaped turntable 50, a slide rail 51, a first stop block 52, a second stop block 53, a toothed belt 54, a third connecting rod 55, a rocker arm 56, and a third motor 57. The first rotating shaft 38 is mounted through the housing 25. Wheel assembly 39 is fixedly mounted on shaft 38. Shaft 40 extends through housing 25. Cam assembly 41 is fixedly mounted on shaft 40. Gear 42 is fixedly mounted on one end of shaft 38. Gear 43 is fixedly mounted on one end of shaft 40. Slide frame 44 is mounted on slide rail 29. Rack 45 is located at one lower end of slide frame 44. Rack 46 is located at the other upper end of slide frame 44. 45 meshes with gear 42, rack 46 meshes with gear 43, one end of connecting rod 47 is hinged to the lower side of slide frame 44, large gear 48 is located on one side of housing 25, connecting rod 49 is fixed to large gear 48, one end of connecting rod 49 is hinged to the other end of connecting rod 47, sector turntable 50 is located on one side of housing 25, below large gear 48, and slide rail 51 is located on sector turntable 47. On the arc-shaped surface of the turntable 50, the first stop block 52 is fixedly mounted on one end of the slide rail 51, the second stop block 53 is fixedly mounted on the other end of the slide rail 51, the toothed belt 54 is slidably mounted on the slide rail 51, one end of the third connecting rod 55 is hinged to the turntable 50, one end of the rocker arm 56 is hinged to the other end of the third connecting rod 55, and the third motor 57 is located on one side of the housing 25, with the output end of the third motor 57 fixedly connected to the other end of the rocker arm 56. The purpose of this pause-type lifting mechanism 34 is to lift the iron upper plate 8 that is embedded in the rectangular groove 31 and maintain the lifted state for a certain period of time, creating conditions for the infrared sensing push plate group 64 or push plate group 65 to push the iron upper plate 8 back to the double-layer chain plate conveyor device 1. The automatic pressure regulating mechanism 37 includes a hollow column 58, a piston 59, a limiting baffle 60, a pressure sensor 61, a spring 62, and a counterweight 63. The hollow column 58 is located inside the cubic accommodating space 30, the piston 59 is located inside the hollow column 58, the limiting baffle 60 is located at the top of the hollow column 58, the pressure sensor 61 is located below the limiting baffle 60, the spring 62 is located at the head of the piston 59, and the counterweight 63 is located at the bottom of the piston 59. This automatic pressure regulating mechanism 37 can use the weight of the counterweight 63 and the pressure difference between the inside and outside of the equipment to control the operation of the equipment's air pump 36, and together with the output signal of the pressure sensor 27, it determines the switching on and off of the air pump 36.

[0036] like Figure 1As shown, the infrared sensing push plate assembly 64 includes a cylinder 66 and an L-shaped push plate 67. The cylinder 66 is fixedly mounted on the housing 25, and the L-shaped push plate 67 is mounted on the slide rail 28. One side of the L-shaped push plate 67 is fixedly connected to the output end of the cylinder 66. The infrared sensing push plate assembly 64 and the push plate assembly 65 have the same structure. An infrared receiver 68 is provided on the automatic pressure regulating box 23, and an infrared transmitter 69 is provided on the automatic pressure regulating box 24.

[0037] like Figure 1 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, the double-layer chain conveyor 1 includes a base 2, a first sprocket assembly 3, a second sprocket assembly 4, a chain 5, an L-shaped hinge 6, a lower plate 7, an upper iron plate 8, and a clutch-type drive brake device 9. The base 2 is located between an automatic regulating air pressure box 1 23 and an automatic regulating air pressure box 24. The first sprocket assembly 3 is located on one side of the base 2, and the second sprocket assembly 4 is located on the other side of the base 2. One side of the chain 5 meshes with the first sprocket assembly 3, and the other side of the chain 5 meshes with the second sprocket assembly 4. One side of the L-shaped hinge 6 is fixedly mounted on the chain, and the lower plate 7 is located on the other side of the L-shaped hinge 6. The upper iron plate 8 is slidably mounted on the lower plate 7. The clutch-type drive brake device 9 is located on one side of the base 2, and its position corresponds to that of the first sprocket assembly 3. The clutch-type drive braking device 9 includes a housing 10, a slide rail 11, an output shaft 12, a first ring rod 13, a second ring rod 14, a brake pad 15, a forward and reverse lead screw 16, a first motor 17, a clutch friction plate 18, a flywheel 19, a pressure plate 20, a diaphragm spring 21, and a second motor 22. The housing 10 is located on one side of the base 2. The slide rail 11 is located on one side wall inside the housing 10. One end of the output shaft 12 is connected to a first sprocket assembly 3. The first ring rod 13 is sleeved on the output shaft 12. The second ring rod 14 is sleeved on the output shaft 12. The second ring rod 14 is farther away from the first sprocket assembly 3 than the first ring rod 13. The brake pad 15 is fixedly mounted on the first ring rod 13. The forward and reverse lead screw 16 passes through the first ring rod 17. A first ring rod 13 is included, with the forward and reverse lead screw 16 passing through a second ring rod 14. A first motor 17 is mounted on the outer wall of the housing 10 and is fixedly connected to one end of the forward and reverse lead screw 16. A clutch friction plate 18 is located at the other end of the output shaft 12 and engages with it. A flywheel 19 is located on one side of the clutch friction plate 18, and a pressure plate 20 is located on the other side of the clutch friction plate 18 and is fixedly connected to the flywheel 19. A diaphragm spring 21 is located between the clutch friction plate 18 and the pressure plate, with its outer ring connected to the clutch friction plate 18. A second motor 22 is located on one side of the flywheel 19, and its output end is fixedly connected to the flywheel 19. The purpose of the clutch-type drive braking device 9 is to remove power to the sprocket and brake it without stopping the second motor 22. This device is controlled by a signal generated by an infrared receiver 68.

[0038] like Figure 1 , Figure 9 , Figure 10 and Figure 11As shown, the precision measuring glass cover 70 includes an electric telescopic rod 71, an explosion-proof glass cover 72, an alternating power supply 73, an electrode plate 74, an electrode plate 75, a wire protection tube 76, a wire protection tube 77, a telescopic rod 78, a chassis 79, a limiting ring 80, a coil 81, a sealing ring 82, an insulating shaft 83, a high-precision ammeter 84, a brush 85, a brush 86, and a motor 87. One end of the electric telescopic rod 71 is mounted on an automatically adjusting air pressure box 23, and the explosion-proof glass cover 72 is fixedly mounted on... At the other end of the electric telescopic rod 71, the alternating power supply 73 is located on the top of the explosion-proof glass cover 72. The first electrode plate 74 is located inside the explosion-proof glass cover 72 on one side. The second electrode plate 75 is located inside the explosion-proof glass cover 72 on the opposite side of the first electrode plate 74. One end of the first wire protection tube 76 is fixed to the alternating power supply 73, and the other end is fixed to one side of the first electrode plate 74. One end of the second wire protection tube 77 is fixed to the alternating power supply 73. The other end is fixed to one side of the electrode plate 75. One end of the telescopic rod 78 is located on the inner wall of the top of the explosion-proof glass cover 72. The base 79 is fixed to the other side of the telescopic rod 78. The limiting ring 80 is located on the telescopic rod 78. The coil 81 is located on one side of the explosion-proof glass cover 72. The sealing ring 82 is located on one side of the explosion-proof glass cover 72. One end of the insulating shaft 83 is fixed to the coil 81. The insulating shaft 83 passes through the sealing ring 82. The high-precision galvanometer 84 is fixed to the explosion-proof glass cover 72. On one side of the glass cover 72, the high-precision galvanometer 84 is positioned above the coil 81. One end of the brush 85 is fixed to the input of the high-precision galvanometer 84, and the other end of the brush 85 is in line-to-line contact with one end of the coil 81. One end of the brush 86 is fixed to the input of the high-precision galvanometer 84, and the other end of the brush 86 is in line-to-line contact with the other end of the coil 81. The motor 87 is fixed to the lower surface of the high-precision galvanometer 84, and the output end of the motor 87 is fixedly connected to the insulating shaft 83. The coarse measurement glass cover 88 includes an electric telescopic rod 89 and an explosion-proof glass cover 90. One end of the electric telescopic rod 89 is mounted on the automatic regulating pressure box 24, and the explosion-proof glass cover 90 is fixed to the other end of the electric telescopic rod 89.

[0039] In practical use, the user loosens the lid of the water cup to be tested and places it inside. Figure 8The water cup is conveyed by the double-layer chain conveyor 1 to the space between the automatic pressure regulating box 23 and the automatic pressure regulating box 24. The water cup blocks the infrared rays emitted by the infrared transmitter 69 to the infrared receiver 68. The signal emitted by the infrared receiver 68 is transmitted to the motor 17 in the clutch-type drive braking device 9. The motor 17 rotates forward, driving the ring rod 13 and the ring rod 14 connected to the positive and negative lead screws 16 to move away from each other. Then the diaphragm spring 21 pulls up the clutch friction plate 18, so that the clutch friction plate 18 is no longer in contact with the flywheel 19, and the power cannot be transmitted to the output shaft 12. At the same time, the brake plate 15 rubs against the sprocket group 3 for braking. After the double-layer chain conveyor 1 stops, the infrared sensing push plate group 64 operates, pushing the iron upper plate 8 into the rectangular groove 21. The iron upper plate 8 is connected to the circuit connector 12 and the circuit connector 23. The electric telescopic rod 28 9. The coarse measuring glass cover 88 is lowered, causing it to descend into the rectangular groove 26 and exert pressure on the pressure sensor 27. The vacuum pump 36 is activated, and the air pressure inside the equipment decreases. Under the action of atmospheric pressure, the piston 59 inside the hollow column 58 overcomes the counterweight 63 and its own weight and moves upward. With the buffer of the spring 62, it gradually applies pressure to the pressure sensor 61. After reaching the threshold of the pressure sensor 61, the pressure sensor 61 generates a signal, and the vacuum pump 36 stops operating. That is, the switch of the vacuum pump 36 is determined by the combined action of the output signals of the pressure sensor 27 and the pressure sensor 61. Adjusting the counterweight 63 allows for selection of different levels of low air pressure environment. Once the air pressure in the equipment drops to a certain level, the boiling status of the liquid in the cup can be observed. After the inspection is completed, the coarse measuring glass cover 88 is raised, and the push plate group 65 and the pause lifting mechanism 34 operate to push the iron upper plate back to the double-layer chain plate conveyor device 1. For non-metallic containers with lids that are difficult to loosen, a precise measurement can be performed. Place the cup on the base 79, lower the precision measuring glass cover 70 and begin to reduce the air pressure, turn on the alternating power supply 73, causing the first electrode 74 and the second electrode 75 to generate an alternating electric field. This induces an alternating electric field in the liquid in the cup in the opposite direction. According to the Ampere's law, a changing electric field will induce a magnetic field. Due to the different dielectric constants of the liquids, the strength of the induced alternating electric field varies, resulting in different strengths of the induced magnetic field. Simultaneously, the fourth motor 87 operates, and the coil 81 rotates. According to the law of electromagnetic induction, the magnetic flux of the coil 81 changes, generating a current. The magnitude of the current is detected by a high-precision galvanometer 84, and by comparison, the liquid can be distinguished. This is the overall workflow of the invention. Repeat this process for the next use.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

[0042] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A benchtop hazardous liquid measuring instrument, characterized in that: The device includes a double-layer chain conveyor (1), an automatic pressure regulating box one (23), an automatic pressure regulating box two (24), an infrared sensing push plate group (64), a push plate group (65), a precision measuring glass cover (70), and a coarse measuring glass cover (88). The automatic pressure regulating box one (23) is located on one side of the double-layer chain conveyor (1), the automatic pressure regulating box two (24) is located on the other side of the double-layer chain conveyor (1), the infrared sensing push plate group (64) is located on the automatic pressure regulating box one (23), and the push plate group (65) is located on the automatic pressure regulating box two (24). The precision measuring glass cover (70) is installed on the automatic regulating air pressure box (23). The precision measuring glass cover (70) uses an alternating power supply to generate an alternating electric field. Since the dielectric constant of the liquid is different, the induced electric field is also different, so the comprehensive magnetic field generated on a certain side is also different. At this time, different liquids can be detected by using a rotating coil and a high-precision ammeter. The coarse measurement glass cover (88) is mounted on the automatic pressure regulating box two (24), which includes an automatic pressure regulating mechanism (37) and is located in the cubic accommodating space (30). The automatic pressure regulating mechanism (37) uses the weight of the counterweight (63) and the pressure difference between the inside and outside of the equipment to control the operation of the equipment's air pump (36). Together with the output signal of the pressure sensor (27), it determines the switching on and off of the air pump (36). By adjusting the counterweight (63), different levels of low pressure environment can be selected. Once the equipment pressure drops to a certain level, the boiling status of the liquid in the water cup can be observed.

2. The benchtop hazardous liquid measuring instrument according to claim 1, characterized in that: The automatic pressure regulating chamber (23) includes a chamber body (25), a rectangular groove (26), a pressure sensor (27), a slide rail (28), a slide rail (29), a cubic storage space (30), a rectangular groove (21), a circuit connector (32), a circuit connector (33), a pause lifting mechanism (34), a perforated baffle (35), an air pump (36), and an automatic pressure regulating mechanism (37). The chamber body (25) is located on one side of the double-layer chain conveyor (1). The rectangular groove (26) is located on the top of the chamber body (25). The pressure sensor (27) is located inside the rectangular groove (26). The slide rail (28) is located on the top of the chamber body (25). The slide rail (29) is located on one side of the chamber body (25). The cubic storage space (30), rectangular groove (21), and cubic storage space (32) are all located in the chamber body (25). The storage space (30) is located inside the box (25). The rectangular groove two (31) is located on the top of the box (25). The rectangular groove two (31) surrounds the top edge of the cubic storage space (30). The circuit connector one (32) is located on one side wall of the rectangular groove two (31). The circuit connector two (33) is located on the other side wall of the rectangular groove two (31). The pause lifting mechanism (34) is located on the box (25). The perforated baffle (35) is fixedly located in the cubic storage space (30). The air pump (36) is located in the cubic storage space (30). The automatic pressure regulating mechanism (37) is located in the cubic storage space (30). The automatic pressure regulating box one (23) and the automatic pressure regulating box two (24) have the same structure.

3. A benchtop hazardous liquid measuring instrument according to claim 2, characterized in that: The pause-type lifting mechanism (34) includes a rotating shaft one (38), a cam assembly one (39), a rotating shaft two (40), a cam assembly two (41), a gear one (42), a gear two (43), a slide frame (44), a rack one (45), a rack two (46), a connecting rod one (47), a large gear (48), a connecting rod two (49), a fan-shaped turntable (50), a slide rail (51), a stop block one (52), a stop block two (53), a toothed belt (54), a connecting rod three (55), a rocker arm (56), and a motor three (57). The rotating shaft one (38) is installed through the... On the housing (25), the first cam assembly (39) is fixedly mounted on the first rotating shaft (38), the second rotating shaft (40) passes through the housing (25), the second cam assembly (41) is fixedly mounted on the second rotating shaft (40), the first gear (42) is fixedly mounted on one end of the first rotating shaft (38), the second gear (43) is fixedly mounted on one end of the second rotating shaft (40), the slide frame (44) is mounted on the slide rail (29), the first rack (45) is mounted on the lower side of the slide frame (44), and the second rack (46) is mounted on the upper side of the slide frame (44). At the end, rack one (45) meshes with gear one (42), rack two (46) meshes with gear two (43), one end of connecting rod one (47) is hinged to the lower side of slide frame (44), the large gear (48) is located on one side of housing (25), connecting rod two (49) is fixed on the large gear (48), one end of connecting rod two (49) is hinged to the other end of connecting rod one (47), the fan-shaped turntable (50) is located on one side of housing (25), the fan-shaped turntable (50) is located below the large gear (48), the slide rail ( 51) On the arc surface of the fan-shaped turntable (50), the first stop block (52) is fixedly installed at one end of the slide rail (51), the second stop block (53) is fixedly installed at the other end of the slide rail (51), the toothed belt (54) is slidably installed on the slide rail (51), one end of the connecting rod (55) is hinged to the fan-shaped turntable (50), one end of the rocker arm (56) is hinged to the other end of the connecting rod (55), the third motor (57) is installed on one side of the housing (25), and the output end of the third motor (57) is fixedly connected to the other end of the rocker arm (56).

4. A benchtop hazardous liquid measuring instrument according to claim 3, characterized in that: The automatic pressure regulating mechanism (37) includes a hollow column (58), a piston (59), a limiting baffle (60), a pressure sensor (61), a spring (62), and a counterweight (63). The hollow column (58) is located inside the cubic accommodating space (30), the piston (59) is located inside the hollow column (58), the limiting baffle (60) is located at the top of the hollow column (58), the pressure sensor (61) is located below the limiting baffle (60), the spring (62) is located at the head of the piston (59), and the counterweight (63) is located at the bottom of the piston (59).

5. A benchtop hazardous liquid measuring instrument according to claim 4, characterized in that: The infrared sensing push plate assembly (64) includes a cylinder (66) and an L-shaped push plate (67). The cylinder (66) is fixedly mounted on the housing (25), and the L-shaped push plate (67) is mounted on the slide rail (28). One side of the L-shaped push plate (67) is fixedly connected to the output end of the cylinder (66). The infrared sensing push plate assembly (64) and the push plate assembly (65) have the same structure.

6. A benchtop hazardous liquid measuring instrument according to claim 5, characterized in that: The first automatic pressure regulating box (23) is equipped with an infrared receiver (68), and the second automatic pressure regulating box (24) is equipped with an infrared transmitter (69).

7. A benchtop hazardous liquid measuring instrument according to claim 6, characterized in that: The double-layer chain conveyor (1) includes a base (2), a first sprocket assembly (3), a second sprocket assembly (4), a chain (5), an L-shaped hinge (6), a lower plate (7), an iron upper plate (8), and a clutch-type drive brake device (9). The base (2) is located between an automatic regulating air pressure box (1) (23) and an automatic regulating air pressure box (24). The first sprocket assembly (3) is located on one side of the base (2), and the second sprocket assembly (4) is located on the other side of the base (2). One side of the chain (5) meshes with the first sprocket assembly (3), and the other side of the chain (5) meshes with the second sprocket assembly (4). One side of the L-shaped hinge (6) is fixed on the chain, and the lower plate (7) is located on the other side of the L-shaped hinge (6). The upper iron plate (8) is slidably located on the lower plate (7). The clutch-type drive brake device (9) is located on one side of the base (2), and the position of the clutch-type drive brake device (9) corresponds to the first sprocket assembly (3).

8. A benchtop hazardous liquid measuring instrument according to claim 7, characterized in that: The clutch-type drive braking device (9) includes a housing (10), a slide rail three (11), an output shaft (12), a ring rod one (13), a ring rod two (14), a brake pad (15), a forward and reverse lead screw (16), a motor one (17), a clutch friction plate (18), a flywheel (19), a pressure plate (20), a diaphragm spring (21), and a motor two (22). The housing (10) is located on one side of the base (2), and the slide rail three... (11) Located on one side wall inside the housing (10), one end of the output shaft (12) is connected to the first sprocket assembly (3), the first ring rod (13) is sleeved on the output shaft (12), the second ring rod (14) is sleeved on the output shaft (12), the second ring rod (14) is farther away from the first sprocket assembly (3) than the first ring rod (13), the brake pad (15) is fixed on the first ring rod (13), and the positive and negative lead screws (16) The first ring rod (13) is inserted through the second ring rod (14), the first motor (17) is installed on the outer wall of the housing (10), and the first motor (17) is fixedly connected to one end of the first ring rod (16). The clutch friction plate (18) is installed at the other end of the output shaft (12), and the clutch friction plate (18) meshes with the output shaft (12). The flywheel (19) is installed on the clutch friction plate (13). On one side of 8), the pressure plate (20) is located on the other side of the clutch friction plate (18). The pressure plate (20) is fixedly connected to the flywheel (19). The diaphragm spring (21) is located between the clutch friction plate (18) and the pressure plate. The outer ring of the diaphragm spring (21) is connected to the clutch friction plate (18). The second motor (22) is located on one side of the flywheel (19). The output end of the second motor (22) is fixedly connected to the flywheel (19).

9. A benchtop hazardous liquid measuring instrument according to claim 8, characterized in that: The precision measuring glass cover (70) includes an electric telescopic rod (71), an explosion-proof glass cover (72), an alternating power supply (73), an electrode plate (74), an electrode plate (75), a wire protection tube (76), a wire protection tube (77), a telescopic rod (78), a chassis (79), a limiting ring (80), a coil (81), a sealing ring (82), an insulating shaft (83), a high-precision ammeter (84), a brush (85), a brush (86), and a motor (87). One end of the electric telescopic rod (71) is mounted on an automatically adjusting air pressure box (23). The explosion-proof glass cover (78) includes an electric telescopic rod (71), an explosion-proof glass cover (72), an electric telescopic rod (73), an electric telescopic rod (74), a base (79), a limiting ring (80), a coil (81), a sealing ring (82), an insulating shaft (83), a high-precision ammeter (84), a brush (85), a brush (86), and a motor (87). 2) Fixed at the other end of the electric telescopic rod (71), the alternating power supply (73) is located on the top of the explosion-proof glass cover (72), the first electrode plate (74) is located inside the explosion-proof glass cover (72) on one side, the second electrode plate (75) is located inside the explosion-proof glass cover (72) on the other side opposite to the first electrode plate (74), one end of the first wire protection tube (76) is fixed on the alternating power supply (73), the other end of the first wire protection tube (76) is fixed on one side of the first electrode plate (74), one end of the second wire protection tube (77) is fixed on the alternating power supply (73), the second wire protection tube (77) is fixed on the other ... The other end of (77) is fixed to one side of the second electrode plate (75). One end of the telescopic rod (78) is located on the inner wall of the top of the explosion-proof glass cover (72). The base (79) is fixed to the other side of the telescopic rod (78). The limiting ring (80) is located on the telescopic rod (78). The coil (81) is located on one side of the explosion-proof glass cover (72). The sealing ring (82) is located on one side of the explosion-proof glass cover (72). One end of the insulating shaft (83) is fixed to the coil (81). The insulating shaft (83) passes through the sealing ring (82). The high-precision ammeter (84) is fixed to the coil (81). On one side of the explosion-proof glass cover (72), the high-precision ammeter (84) is located above the coil (81). One end of the brush (85) is fixed at the input of the high-precision ammeter (84), and the other end of the brush (85) is in contact with the wire surface of one end of the coil (81). One end of the brush (86) is fixed at the input of the high-precision ammeter (84), and the other end of the brush (86) is in contact with the wire surface of the other end of the coil (81). The motor (87) is fixed on the lower surface of the high-precision ammeter (84), and the output end of the motor (87) is fixedly connected to the insulating shaft (83).

10. A benchtop hazardous liquid measuring instrument according to claim 9, characterized in that: The coarse measurement glass cover (88) includes an electric telescopic rod two (89) and an explosion-proof glass cover two (90). One end of the electric telescopic rod two (89) is mounted on the automatic regulating air pressure box two (24), and the explosion-proof glass cover two (90) is fixedly mounted on the other end of the electric telescopic rod two (89).

Images