Novel convenient and efficient anti-vacuum detection machine

By designing a convenient and efficient anti-vacuum testing machine, automated batch testing has been achieved, solving the problems of low testing efficiency and complex operation of existing devices. This has improved testing efficiency and accuracy, reduced costs, and met ergonomic maintenance requirements.

CN224535339UActive Publication Date: 2026-07-21SUZHOU YONGKE ELECTRONIC EQUIPMENT CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU YONGKE ELECTRONIC EQUIPMENT CO LTD
Filing Date
2025-12-14
Publication Date
2026-07-21

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    Figure CN224535339U_ABST
Patent Text Reader

Abstract

The utility model discloses a novel convenient and efficient anti-vacuum detection machine. The anti-vacuum detection machine includes machine table, water pump, vacuum pump, PLC control unit, detection box, water tank and operation box, the horizontal panel of the stereoscopic frame of machine table is fixed, and the upper support, middle support and lower support of the side wall of frame are fixedly connected with PLC control unit, vacuum pump and water pump respectively, and the water pump is connected with detection box through upper union pipe and is connected with water tank through lower union pipe, the vacuum pump is connected with vacuum joint through air pipe, and the vacuum joint and vacuum gauge are fixed on the upper cover, the PLC control unit is electrically connected with water pump, vacuum pump, operation box and vacuum gauge, the detection box and operation box are connected on both ends of panel, the water tank is connected in the frame and is connected with detection box through vertical water pipe, the batch packaging product is placed on the carrier, then is put into detection cavity as a whole, the upper cover is closed, the start button is started, and the anti-vacuum detection is automatically completed. The utility model has the effect that the degree of automation is high, the operation is convenient and the detection efficiency is high.
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Description

Technical Field

[0001] This utility model relates to the field of packaging inspection, and in particular to a novel, convenient and efficient anti-vacuum inspection machine. Background Technology

[0002] In fields such as 3C components and valuable pharmaceuticals, products are sealed in packaging bags to prevent contamination. These packaged products require random sampling for vacuum resistance testing. Current vacuum resistance testing devices test each packaged product individually, activating the water supply module, vacuum module, and other control modules one by one. The drawbacks are: firstly, the operation of current vacuum resistance testing devices is complex, with long testing cycles and low efficiency. Testing a single batch of products requires significant time, leading to high testing costs; secondly, the complex operating procedures are inconvenient, requiring highly skilled operators, and batch testing can easily cause operator fatigue, resulting in errors, missed detections, and poor testing accuracy. Utility Model Content

[0003] To address one or more of the aforementioned problems, this utility model provides a novel, convenient, and efficient anti-vacuum testing machine.

[0004] According to one aspect of the present invention, the novel convenient and efficient anti-vacuum testing machine includes a machine base, a water pump, a vacuum pump, a PLC control unit, a testing box, a water tank, and an operation box. A horizontal panel is fixed on the three-dimensional frame of the machine. The upper support, middle support and lower support are connected in an adjustable manner from top to bottom on one side wall of the frame. The water pump is connected to the lower bracket, and the water pump is connected to the inlet of the test box through the upper connecting pipe and to the lower port of the water tank through the lower connecting pipe; The vacuum pump is connected to the bracket, and the vacuum pump is connected to the vacuum connector through the air pipe. The vacuum connector and vacuum gauge are fixed on the top cover. The PLC control unit is connected to the upper bracket and is electrically connected to the water pump, vacuum pump, control box and vacuum gauge through multiple cables; The test chamber has a connecting panel at one end, which includes a transparent test chamber, a cover that seals the test chamber, and a multi-chamber carrier that can be detached and inserted into the test chamber. The water tank is connected to the lower crossbeam of the frame, and the water tank is connected to the lower wall of the inner cavity of the detection tank through a vertical water pipe; The control box is connected to the other end of the panel and has multiple buttons; Place the batch packaged products on the carrier, then put the whole package into the testing chamber, close the top cover, press the start button, and the testing machine will automatically complete the vacuum resistance test of the batch packaged products.

[0005] In some embodiments, the upper support, middle support, and lower support all include a right-angle frame with the same structure. The two right-angle bent plates of the right-angle frame are horizontally adjustable to the mounting plate via threaded parts and vertically adjustable to the side legs of the frame via threaded parts. Triangular reinforcing ribs are welded to the outside of the right-angle bent plates. The right-angle bent plates are bent parts, and the mounting plate is a C-shaped reinforcing beam.

[0006] In some embodiments, the upper bracket also includes a cable guide plate with cable holes and mounting holes, the cable guide plate being threadedly connected to two right-angled bends; the PLC control unit is fixed on the mounting plate.

[0007] In some embodiments, four shock-absorbing pads are provided at the connection between the mounting plate of the middle support and the vacuum pump; four shock-absorbing pads are also provided at the connection between the mounting plate of the lower support and the water pump.

[0008] In some embodiments, an outer protective box is also included. The outer protective box is fixedly connected to the side legs of the frame by threaded fittings and surrounds the upper support, middle support, and lower support. The outer protective box and the frame are connected by an open wall.

[0009] In some embodiments, the detection box includes a detection chamber made of transparent acrylic material and a top cover. Two first right-angle threaded joints are installed on the outer wall of the detection chamber. A first transparent air tube is installed on the two first right-angle threaded joints. A first photoelectric sensor is also fixedly installed on the detection chamber. The detection slot of the first photoelectric sensor covers the first transparent air tube. The testing box is also equipped with a flow equalization commutator facing the upper connecting pipe.

[0010] In some embodiments, the water tank is an open-topped water trough and a split-structure end cap fixedly connected to the water trough. An overflow port is provided at the upper end of one side wall of the water trough and a drain port is provided at the lower end. Two second right-angle threaded joints are installed on the other side wall of the water trough. A second transparent air tube is installed on the two second right-angle threaded joints. A second photoelectric sensor is fixedly installed on the water trough. The detection slot of the second photoelectric sensor is covered by the second transparent air tube.

[0011] In some embodiments, the frame includes four side legs, four upper crossbeams vertically connected to the upper ends of the four side legs, and four lower crossbeams vertically connected to the lower ends of the four side legs. Each side leg is also connected to a height-adjustable support foot. The side legs, upper crossbeams, and lower crossbeams are rectangular aluminum profiles with multiple connection channels.

[0012] In some embodiments, a step platform is also included, which is located longitudinally in front of the three-dimensional frame; the step platform includes an upper step with anti-slip texture, four short legs vertically connected to the underside of the upper step, and height-adjustable support feet connected to the lower wall of each short leg.

[0013] In some implementations, the control box has two rows of buttons at the bottom and an adjustment knob at the top. The control box has a display screen on one side and a three-color alarm on the other side. An emergency stop switch is located on the upper side wall of the control box.

[0014] This new, convenient, and efficient vacuum testing machine enables batch testing of multiple products through a multi-chamber carrier. The water pump, vacuum pump, control box, and vacuum gauge are all connected to a PLC control unit, which automates the operation. After the products are placed, simply pressing a button on the control box initiates automated testing. Its advantages are: First, the operation is simple, requiring only batch feeding, pressing to start, and pressing to stop, significantly shortening operation time, streamlining the testing cycle, and greatly improving efficiency while reducing labor costs and testing costs. Second, the simplified testing process and convenient operation greatly reduce the professional requirements for operators, making testing easy, fatigue-free during long-term operation, eliminating missed detections, and ensuring high accuracy. Third, the side-mounted arrangement of the water pump, vacuum pump, and PLC control unit, compared to an overhead arrangement, facilitates maintenance. Maintenance personnel do not need to bend under the machine, making operation and maintenance convenient and ergonomic. Attached Figure Description

[0015] Figure 1 This is a three-dimensional schematic diagram of a novel, convenient, and efficient anti-vacuum testing machine according to one embodiment of the present invention. Figure 2 for Figure 1 A three-dimensional schematic diagram of the machine tool, water pump, vacuum pump, and PLC control unit shown. Figure 3 for Figure 2 A three-dimensional schematic diagram of the vacuum pump and the lower support shown. Figure 4 for Figure 2 A three-dimensional schematic diagram of the support shown; Figure 5 for Figure 2 A three-dimensional schematic diagram of the lower support shown; Figure 6 for Figure 1 A three-dimensional schematic diagram of the control box shown; Figure 7 for Figure 1 A three-dimensional schematic diagram of the climbing platform shown; Figure 8 for Figure 1 A three-dimensional schematic diagram of the water tank shown. Figure 9 for Figure 1 A three-dimensional schematic diagram of the detection box shown; Machine base 1, frame 10, panel 11, first through hole 110, upper bracket 12, cable guide plate 120, middle bracket 13, lower bracket 14, lower crossbeam 15, side connecting leg 16, upper crossbeam 17, right angle frame 18, right angle bent plate 180, mounting plate 181, triangular reinforcing rib plate 182, horizontal oblong adjustment hole 183, vertical oblong adjustment hole 184, shock absorption pad 19; Water pump 2, upper connecting pipe 21, lower connecting pipe 22, water outlet port 23, water inlet port 24; Vacuum pump 3, air pipe 31, vacuum connector 32, vacuum gauge 33 PLC control unit 4, outer protective box 40; Detection box 5, detection chamber 50, top cover 51, carrier 52, first right-angle threaded joint 53, first transparent air tube 54, first photoelectric sensor 55, card holder 56, flow equalization reversing seat 57; Water tank 6, water trough 60, vertical water pipe 61, end cap 62, overflow port 63, vent port 64, second right-angle threaded joint 65, second transparent air pipe 66, second photoelectric sensor 67, U-shaped through hole 68. Control box 7, button 71, adjustment knob 72, display screen 73, three-color light alarm 74, emergency stop switch 75; 8. Climbing platform 81. Stepping board 82. Short standing leg 82; Height-adjustable support foot 9, foot 90, screw 91, adjusting nut 92. Detailed Implementation

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to the directions in the accompanying drawings, while the terms "inner" and "outer" refer to the directions toward or away from the geometric center of a specific component, respectively.

[0017] Figures 1 to 9 The figure schematically illustrates a novel, convenient, and efficient anti-vacuum testing machine according to one embodiment of the present invention. As shown, the novel, convenient, and efficient anti-vacuum testing machine includes a machine base 1, a water pump 2, a vacuum pump 3, a PLC control unit 4, a testing box 5, a water tank 6, and an operation box 7. A horizontal panel 11 is fixed on the three-dimensional frame 10 of the machine base 1. The upper support 12, the middle support 13, and the lower support 14 are connected in an adjustable manner from top to bottom on one side wall of the frame 10. Water pump 2 is connected to the lower support 14. Water pump 2 is connected to the inlet of the detection box 5 through the upper connecting pipe 21 and to the lower port of the water tank 6 through the lower connecting pipe 22. Water pump 3 is preferably a diaphragm water pump.

[0018] Vacuum pump 3 is connected to bracket 13. Vacuum pump 3 is connected to vacuum connector 32 through air pipe 31. Vacuum connector 32 and vacuum gauge 33 are fixed to upper cover 51. The PLC control unit 4 is connected to the upper bracket 12 and is electrically connected to the water pump 2, vacuum pump 3, control box 7 and vacuum gauge 33 through multiple cables. The test chamber 5 is connected to the panel 11 at one end, which includes a transparent test chamber 50, a cover 51 that seals the test chamber 50, and a multi-chamber carrier 52 that can be disassembled and inserted into the test chamber 50; the vacuum negative pressure makes the cover 51 securely seal the test chamber 50. Water tank 6 is connected to the lower crossbeam 15 of frame 10, and water tank 6 is connected to the lower wall of the inner cavity of detection box 5 through vertical water pipe 61; The control box 7 is connected to the other end of the panel 11 and is equipped with multiple buttons 71; Place the batch packaged products on the carrier 52, then put the whole package into the testing chamber 50, close the top cover 51, press the start button 71, and the testing machine will automatically complete the vacuum resistance test of the batch packaged products.

[0019] This new, convenient, and efficient anti-vacuum testing machine enables batch testing of multiple products through a multi-chamber carrier 52. The water pump 2, vacuum pump 3, control box 7, and vacuum gauge 33 are all connected to a PLC control unit 4, achieving automated operation. After the products are placed, simply pressing button 71 on the control box 7 initiates automated testing. Its advantages are: First, the operation of this testing device is simple, requiring only batch material feeding, pressing to start, and pressing to stop, greatly shortening operation time, streamlining the testing cycle, significantly improving testing efficiency, reducing labor costs, and lowering testing costs. Second, the simplified testing process and convenient operation greatly reduce the professional requirements for operators, making testing easy, fatigue-free during long-term operation, eliminating missed detections, and ensuring high testing accuracy. Third, the side-mounted arrangement of the water pump 2, vacuum pump 3, and PLC control unit 4, compared to an overhead arrangement, facilitates maintenance. Maintenance personnel do not need to bend under the machine, making operation and maintenance convenient and ergonomic.

[0020] Furthermore, the upper bracket 12, middle bracket 13, and lower bracket 14 all include a right-angle bracket 18 with identical structure. The horizontal elongated oval adjustment holes 183 of the two right-angle bent plates 180 of the right-angle bracket 18 are horizontally adjustable to the mounting plate 181 via threaded fittings. The vertical elongated oval adjustment holes 184 of the right-angle bent plates 180 are vertically adjustable to the connecting grooves of the side legs 16 of the frame 10 via threaded fittings. Its advantages are: the bracket has high strength, can withstand large loads during long-term operation, maintains stable performance over long-term operation, is easy to assemble and adjust, and can achieve the optimal installation position.

[0021] Preferably, it also includes an outer protective box 40, which is fixedly connected to the side legs 16 of the frame 10 by threaded fittings and surrounds the upper bracket 12, middle bracket 13, and lower bracket 14. The outer protective box 40 and the frame 10 are connected by an open wall. Its advantages are: the outer protective box 40 can protect valuable components such as the water pump 2, vacuum pump 3, and PLC control unit 4, with high safety performance and long service life.

[0022] Preferably, a triangular reinforcing rib plate 182 is welded to the outer side of the right-angled bent plate 180. The right-angled bent plate 180 is a bent component, and the mounting plate 181 has secondary right-angle bends at both ends to form C-shaped reinforcing beams. The beneficial effects are: this structure further improves the strength of the support, ensures stable equipment operation, and guarantees accurate detection precision.

[0023] Furthermore, the upper bracket 12 also includes a wire guide plate 120 with wire holes and mounting holes, the wire guide plate 120 being threadedly connected to two right-angled bends 180; the PLC control unit 4 is fixed on the mounting plate 181.

[0024] Four rectangular arrays of shock-absorbing pads 19 are attached to the mounting plate 181 of the central bracket 13. The threaded part passes through the support foot through hole of the vacuum pump 3, the shock-absorbing pads 19, and the through hole of the mounting plate 181 to connect the lower nut. The air pipe 31 connected to the vacuum pump 3 passes through multiple openings of the frame 10 and is connected to the vacuum connector 32.

[0025] Four rectangular arrays of shock-absorbing pads 19 are attached to the mounting plate 181 of the lower support 14. Threaded parts pass through the support holes of the water pump 2, the shock-absorbing pads 19, and the through holes of the mounting plate 181, connecting to lower nuts. The lower end of the upper connecting pipe 21 passes through the side opening of the frame 10 to connect to the side outlet port 23 of the water pump 3, and the upper end passes through the first through hole 110 of the panel 11 to connect to the water inlet on the lower wall of the test box 5. The upper end of the lower connecting pipe 22 connects to the water outlet on the lower wall of the water tank 6 and passes through the side opening of the frame 10 to connect to the central water inlet port 24 of the water pump 3. The shock-absorbing pads 19 are preferably made of flexible polyurethane. The beneficial effect is that this arrangement further eliminates equipment vibration problems and ensures a good testing environment.

[0026] Furthermore, the testing box 5 includes a testing cavity 50 made of transparent acrylic material and a top cover 51. Two first right-angle threaded joints 53 are installed on the outer wall of the testing cavity 50. A first transparent air tube 54 is installed on the two first right-angle threaded joints 53. A first photoelectric sensor 55 is also fixedly installed on the testing cavity 50. The detection slot of the first photoelectric sensor 55 covers the first transparent air tube 54. Two handles are symmetrically provided on the top cover 51. The carrier 52 is formed by vertically connecting longitudinal, transverse, and vertical round rods, which enclose and form a rectangular array of multiple product cavities. The lower round rod is laterally connected to the ferrule detection cavity 50 and the ferrule seat 56 at the lower end. The test box 5 is also equipped with a flow equalization commutator 57 facing the upper connecting pipe 21; The flow equalization reversing seat 57 is a rectangular seat with a central water inlet on all four walls and an open lower wall. Its advantage is that this design enables stable testing of batch products.

[0027] Furthermore, the water tank 6 is an open-top water trough 60 and a split end cap 62 fixedly connected to the water trough 60. The upper end of one side wall of the water trough 60 is provided with an overflow port 63 and the lower end is provided with a drain port 64. Two second right-angle threaded joints 65 are installed on the other side wall of the water trough 60. A second transparent air tube 66 is installed on the two second right-angle threaded joints 65. A second photoelectric sensor 67 is also fixedly installed on the water trough 60. The detection slot of the second photoelectric sensor 67 is covered by the second transparent air tube 66. The upper end of the vertical water pipe 61 passes through the first through hole 110 of the panel 11 and connects to the water outlet on the lower wall of the detection box 5, while the lower end passes through the U-shaped through hole 68 of the end cover 62 and enters the water tank 60.

[0028] Preferably, water tank 6 is made of PP copolymer. Its advantage is that this setup can stably supply the water environment required for testing.

[0029] Furthermore, the frame 10 includes four side legs 16, four upper crossbeams 17 vertically connected to the upper ends of the four side legs 16, and four lower crossbeams 15 vertically connected to the lower ends of the four side legs 16. Each side leg 16 is also connected to a height-adjustable support foot 9. The side connecting legs 16, upper crossbeam 17, and lower crossbeam 15 are rectangular aluminum profiles with multiple connection channels; the connections of each aluminum profile are made by threaded fittings, forming a three-dimensional rectangular frame. The advantages are: this design facilitates installation and assembly, greatly reducing the amount of machining and assembly work.

[0030] Furthermore, it also includes a step platform 8, located longitudinally in front of the three-dimensional frame 10, directly facing the operating surface of the control box 7. The step platform 8 includes an upper footboard 81 with anti-slip textured surface, four short legs 82 vertically connected to the upper footboard 81, and height-adjustable support feet 9 connected to the lower wall of each short leg 82. Its beneficial effect is that this setup provides workers with a good and safe working height.

[0031] Preferably, the height-adjustable support foot 9 includes a support foot 90, a screw 91 threaded onto the foot 90, and two adjusting nuts 92 connected to the screw 91; The upper end of the screw 91 is threaded to the vertical threaded hole on the lower end wall of the short upright leg 82 or the vertical threaded hole of the side connecting leg 16. Rotating the adjusting nut 92 can shorten or reduce the relative distance between the foot 90 and the short upright leg 82 or the side connecting leg 16.

[0032] Furthermore, the control box 7 has two rows of buttons 71 at the bottom and an adjustment knob 72 at the top. A display screen 73 is located on one side of the top of the control box 7, and a three-color alarm 74 is located on the other side. An emergency stop switch 75 is located on the upper side wall of the control box 7. The beneficial effect of this design is that it improves the safety of automated operations.

[0033] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A novel, convenient, and efficient anti-vacuum testing machine, characterized in that, It includes a machine base (1), a water pump (2), a vacuum pump (3), a PLC control unit (4), a detection box (5), a water tank (6), and an operation box (7); A horizontal panel (11) is fixed on the three-dimensional frame (10) of the machine (1). The upper support (12), middle support (13) and lower support (14) are connected in an adjustable manner from top to bottom on one side wall of the frame (10). The water pump (2) is connected to the lower bracket (14). The water pump (2) is connected to the inlet of the detection box (5) through the upper connecting pipe (21) and to the lower port of the water tank (6) through the lower connecting pipe (22). The vacuum pump (3) is connected to the bracket (13), and the vacuum pump (3) is connected to the vacuum connector (32) through the air pipe (31). The vacuum connector (32) and the vacuum gauge (33) are fixed on the top cover (51). The PLC control unit (4) is connected to the upper bracket (12) and is electrically connected to the water pump (2), vacuum pump (3), control box (7) and vacuum gauge (33) through multiple cables respectively. The detection box (5) is connected to one end of the panel (11), which includes a transparent detection cavity (50), a top cover (51) that seals the detection cavity (50), and a multi-cavity carrier (52) that can be disassembled and inserted into the detection cavity (50). The water tank (6) is connected to the lower crossbeam (15) of the frame (10), and the water tank (6) is connected to the lower wall of the inner cavity of the detection box (5) through a vertical water pipe (61); The operation box (7) is connected to the other end of the panel (11) and is provided with multiple buttons (71); Place the batch packaged products on the carrier (52), then put the whole product into the testing chamber (50), close the top cover (51), press the start button (71), and the testing machine will automatically complete the vacuum test of the batch packaged products.

2. The anti-vacuum testing machine according to claim 1, characterized in that, The upper support (12), middle support (13), and lower support (14) all include right-angle brackets (18) with the same structure. The two right-angle plates (180) of the right-angle bracket (18) are horizontally adjustable to the mounting plate (181) and vertically adjustable to the side legs (16) of the frame (10) through threaded parts. The right-angled bent plate (180) is welded with a triangular reinforcing rib plate (182) on the outside. The right-angled bent plate (180) is a bent part, and the mounting plate (181) is a C-shaped reinforcing beam.

3. The anti-vacuum testing machine according to claim 2, characterized in that, The upper bracket (12) also includes a wire guide plate (120) with wire holes and mounting holes, the wire guide plate (120) being threadedly connected to two right-angled bends (180); the PLC control unit (4) is fixed on the mounting plate (181).

4. The anti-vacuum testing machine according to claim 3, characterized in that, Four shock-absorbing pads (19) are provided at the connection between the mounting plate (181) of the middle bracket (13) and the vacuum pump (3); four shock-absorbing pads (19) are also provided at the connection between the mounting plate (181) of the lower bracket (14) and the water pump (2).

5. The anti-vacuum testing machine according to claim 4, characterized in that, It also includes an outer protective box (40), which is fixedly connected to the side legs (16) of the frame (10) by threaded parts and surrounds the upper bracket (12), the middle bracket (13) and the lower bracket (14). The outer protective box (40) and the frame (10) are connected by an open wall.

6. The anti-vacuum testing machine according to claim 1, characterized in that, The detection box (5) includes a detection cavity (50) made of transparent acrylic material and a top cover (51). Two first right-angle threaded joints (53) are installed on the outer wall of the detection cavity (50). A first transparent air tube (54) is installed on the two first right-angle threaded joints (53). A first photoelectric sensor (55) is also fixedly installed on the detection cavity (50). The detection slot of the first photoelectric sensor (55) is covered by the first transparent air tube (54). The detection box (5) is also equipped with a flow equalization commutator (57) facing the upper connecting pipe (21).

7. The anti-vacuum testing machine according to claim 1, characterized in that, The water tank (6) is an open-top water tank (60) and a split end cap (62) fixedly connected to the water tank (60). The upper end of one side wall of the water tank (60) is provided with an overflow port (63) and the lower end is provided with a drain port (64). Two second right-angle threaded joints (65) are installed on the other side wall of the water tank (60). A second transparent air tube (66) is installed on the two second right-angle threaded joints (65). A second photoelectric sensor (67) is fixedly installed on the water tank (60). The detection slot of the second photoelectric sensor (67) is covered by the second transparent air tube (66).

8. The anti-vacuum testing machine according to claim 1, characterized in that, The frame (10) includes four side legs (16), four upper crossbeams (17) vertically connected to the upper ends of the four side legs (16), and four lower crossbeams (15) vertically connected to the lower ends of the four side legs (16). Each side leg (16) is also connected to a height-adjustable support foot (9). The side legs (16), upper crossbeams (17), and lower crossbeams (15) are rectangular aluminum profiles with multiple connection channels.

9. The anti-vacuum testing machine according to claim 1, characterized in that, It also includes a step platform (8), which is located in front of the three-dimensional frame (10) longitudinally; the step platform (8) includes an upper step (81) with anti-slip texture, four short legs (82) vertically connected to the upper step (81), and height-adjustable support feet (9) connected to the lower wall of each short leg (82).

10. The anti-vacuum testing machine according to claim 1, characterized in that, The control box (7) has two rows of buttons (71) at the bottom and an adjustment knob (72) at the top. The control box (7) has a display screen (73) on one side and a three-color light alarm (74) on the other side. The control box (7) has an emergency stop switch (75) on the upper side wall.