Automatic vegetable and fruit packaging equipment based on visual system

Abstract

The utility model relates to the technical field of vegetable and fruit packaging, and discloses automatic vegetable and fruit packaging equipment based on a visual system, which comprises a bottom plate, the right end of the top side of the bottom plate is fixedly connected with a plurality of collecting tables, the right part of the top side of the bottom plate is provided with a supporting assembly, and the supporting assembly is internally provided with a turnover mechanism I; the device comprises a first turnover mechanism, two large rotating arms are fixedly connected to the exterior of the first turnover mechanism, second turnover mechanisms are arranged at the ends, far away from each other, of the two large rotating arms, small rotating arms are fixedly connected to the top sides of the second turnover mechanisms, and driving assemblies are arranged at the ends, far away from each other, of the two small rotating arms. According to the vegetable and fruit collecting device, by means of mutual cooperation of the first overturning mechanism, the second overturning mechanism and the motor, vegetables and fruits can be stably placed on the collecting box at the top of the collecting table to be stressed, and compared with the prior art, the situation that the vegetables and the fruits directly fall into the collecting box and are rotten and damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vegetable and fruit packaging, and in particular to an automatic vegetable and fruit packaging device based on a vision system. Background Art

[0002] The automatic fruit and vegetable packaging equipment based on the vision system is a kind of equipment that uses computer vision technology to realize automatic packaging and sorting of fruits and vegetables. This kind of equipment can detect, identify and classify fruits and vegetables through the vision system, thereby realizing the automatic packaging and sorting process.

[0003] After searching, the Chinese patent document announcement number: CN220164238U discloses an automatic boxing device for a fruit and vegetable washing line, which includes a fruit and vegetable conveyor belt and a loading mechanism, the loading mechanism is arranged at the end of the fruit and vegetable conveyor belt to receive the material on the fruit and vegetable conveyor belt; the loading mechanism includes a gear, a support seat and a base, and a gear ring is installed on both sides of the support seat, the gear ring includes unconnected upper teeth and lower teeth, the gear includes a wheel and a meshing column, the gear rotates to make the meshing column connect with the upper teeth and the lower teeth respectively, so that the gear is pushed to move back and forth through the gear, so that the support seat moves forward and backward relative to the fruit and vegetable conveyor belt. It has the advantages of simple structure, compact fit, and reasonable design; therefore, it is a product with superior performance in both technical and economic aspects.

[0004] Regarding the above-mentioned related technologies, the inventor believes that the above patent mentioned in the specific implementation mode: "In order to improve the efficiency of vegetable and fruit discharge and packing, this solution proposes an automatic packing equipment for a vegetable and fruit washing line, which includes a vegetable and fruit conveyor belt and a loading mechanism. When in use, the vegetables and fruits to be packed are placed on each fence section of the fence group, and the conveying position of a single section of vegetables and fruits is limited to facilitate arrangement and packing. The transmission belt rotates to transport the vegetables and fruits in the fence section to the loading mechanism. The box body is placed on the supporting seat of the loading mechanism, and the box body moves with the supporting seat; in order to fully fill the space in the box body, the supporting seat is driven by the gear and the gear ring, so that the box body on the supporting seat moves left and right to receive the vegetables and fruits falling from the vegetable and fruit conveyor belt, thereby realizing the arrangement and packing function, and mechanically replacing manual packing, greatly improving production efficiency". Through the cooperation of the conveyor belt and the loading mechanism, this patent can automatically transport vegetables and fruits and finally drop them into the collection box.

[0005] Although the above utility model patent can realize the transportation of fruits and vegetables, at the end of transportation, the conveyor belt and the loading mechanism are at a high distance from the inner wall of the collection box. After the fruits and vegetables fall into the collection box, they are collided, causing the fruits and vegetables to be smashed or scratched. Therefore, in view of the above shortcomings, an automatic fruit and vegetable packaging equipment based on a visual system is proposed. Summary of the invention

[0006] The purpose of the utility model is to solve the shortcomings of the prior art and to propose an automatic fruit and vegetable packaging device based on a visual system, aiming to improve the problem in the prior art that when packaging fruits and vegetables, the fruits and vegetables fall vertically onto the inner wall of the collection box and cause the fruits and vegetables to break.

[0007] The present application provides an automatic fruit and vegetable packaging device based on a visual system, which adopts the following technical solutions:

[0008] A fruit and vegetable automatic packaging device based on a visual system comprises a bottom plate, a plurality of collecting tables are fixedly connected to the right end of the top side of the bottom plate, a support assembly is arranged on the right part of the top side of the bottom plate, a turning mechanism 1 is arranged inside the support assembly, two rotating large arms are fixedly connected to the outside of the turning mechanism 1, the far ends of the two rotating large arms are each provided with a turning mechanism 2, a rotating small arm is fixedly connected to the top side of the turning mechanism 2, a driving assembly is arranged at the far ends of the two rotating small arms, a rotating assembly is arranged at the far sides of the two driving assemblies, a vacuum block is rotatably connected to the far sides of the two rotating assemblies, a transfer plate is fixedly connected to the far sides of the two vacuum blocks, an adsorption assembly is arranged on the bottom side of the vacuum block, an adsorption plate is fixedly connected to the inner wall of the bottom end of the adsorption assembly, a connecting pipe is fixedly connected to the right side of the transfer plate, and a transmission assembly is arranged on the left end of the top side of the bottom plate.

[0009] By adopting the above technical solution, the two rotating arms are driven by the flipping mechanism, so that vegetables and fruits in two paths can be picked up at the same time, and the control box, the circular plate and the trapezoidal column cooperate with each other to provide a stable support structure for the flipping mechanism, and then the flipping mechanism 2 will drive the rotating small arm to rotate, and at the same time use the motor to drive the special-shaped plate to rotate, and push the fixed column to push the special-shaped plate to push the vacuum block downward to approach the vegetables and fruits, so that there is no need to manually package the vegetables and fruits.

[0010] Optionally, the transmission assembly includes a transmission mechanism, the left end portion of the top side of the base plate is fixedly connected to the bottom side of the transmission mechanism, the top side of the transmission mechanism is fixedly connected to a support frame, the middle part of the support frame is rotatably connected to a rotating column, the top side of the rotating column is fixedly connected to an arc plate, the outside of the rotating column is fixedly connected to a limiting disk, the bottom side of the rotating column is fixedly connected to a threaded rod, the external thread of the threaded rod is connected to a threaded cylinder, the bottom side of the threaded cylinder is fixedly connected to a sliding plate, the two sliding plates are fixedly connected to a connecting block on the far side, the two connecting blocks are fixedly connected to a connecting block on the far side, the top side of the inner wall of the sliding plate is fixedly connected to a plurality of springs, the bottom sides of the plurality of springs are fixedly connected to a T-shaped plate, the bottom side of the T-shaped plate is fixedly connected to a square plate, and the bottom side of the square plate is fixedly connected to a plurality of brushes.

[0011] By adopting the above technical solution, the sliding plate is restricted by the connecting block fixed to the sliding plate and the connecting block sliding on the front and rear sides of the support frame, so that when the rotating column drives the threaded rod to rotate, the force given to the threaded sleeve is converted into up and down movement, thereby pushing the sliding plate to move up and down to adapt to fruits and vegetables of different sizes.

[0012] Optionally, the support assembly includes a control box, the right portion of the top side of the base plate is fixedly connected to the bottom side of the control box, a circular plate is fixedly connected to the top side of the control box, and a trapezoidal column is fixedly connected to the top side of the circular plate.

[0013] By adopting the above technical solution, the top of the control box is welded to the bottom side of the circular plate, and then the circular plate is welded to the trapezoidal column, so that they cooperate with each other to provide stable supporting force.

[0014] Optionally, the two driving assemblies each include a motor, the exteriors of the two motors are respectively fixedly connected to opposite ends of the two rotating arms, and the driving ends of the motors are fixedly connected to columns.

[0015] By adopting the above technical solution, the driving source motor is fixed inside the rotating arm to provide a stable operating platform, and the column is driven to rotate by starting the motor, so that the fruits and vegetables can be transported to the inside of different collection boxes.

[0016] Optionally, the two rotating components each include a fixed column, the adjacent sides of the two fixed columns are respectively fixedly connected to the distant sides of the two columns, and the distant sides of the two fixed columns are both fixedly connected with a special-shaped plate.

[0017] By adopting the above technical solution, the rotation of the upright column drives the fixed column to rotate together, so that the rotation of the fixed column drives the special-shaped plate to rotate, so that it can adapt to fruits and vegetables of different heights.

[0018] Optionally, the exteriors of the two connection blocks are respectively slidably connected to the inner walls at the front and rear ends of the support frame, and the adjacent sides of the two connection blocks are respectively slidably connected to the front and rear sides of the support frame.

[0019] By adopting the above technical solution, the sliding plate drives the connecting block to slide on the front and rear ends of the support frame, so that the sliding plate can slide vertically, and the connecting block is restricted by the connecting block to prevent the sliding plate from deflecting.

[0020] Optionally, the outside of the T-shaped plate is slidably connected to the inner wall of the sliding plate, and the top right end of the support frame is fixedly connected to a visual instrument.

[0021] By adopting the above technical solution, the T-shaped plate slides on the inner wall of the sliding plate after being subjected to force, and a visual instrument is used to observe whether vegetables and fruits pass by.

[0022] Optionally, the adsorption assembly includes an adsorption tube, the top side of the adsorption tube is fixedly connected to the vacuum block, and the bottom side of the adsorption tube is fixedly connected to a square block.

[0023] By adopting the above technical solution, a storage space is reserved for air through the square block, and the air inside the square block is extracted by using the adsorption tube, so as to achieve the adsorption and movement of fruits and vegetables.

[0024] In summary, the present application includes at least one of the following beneficial technical effects of an automatic fruit and vegetable packaging device based on a vision system:

[0025] 1. In the utility model, through the coordinated use of the control box, the circular plate, the trapezoidal column, the first flip mechanism, the rotating big arm, the second flip mechanism, the rotating small arm, the motor, the column and other structures, after the vegetables and fruits are detected, the first flip mechanism, the second flip mechanism and the motor can move the adsorption plate to the top of the vegetables and fruits. Compared with the existing technology, the operation device is more flexible. Then, it only needs to use vacuum adsorption, so that the adsorption plate can evacuate the air inside the square block after contacting the vegetables and fruits, so that the external pressure is greater than the internal pressure, so that the vegetables and fruits are firmly adsorbed on the bottom side of the adsorption plate. Compared with the existing technology, the vegetables and fruits are prevented from colliding with each other during the packaging process. By using the mutual cooperation of the first flip mechanism, the second flip mechanism and the motor, the vegetables and fruits can be stably placed on the collection box on the top of the collection table to bear the force. Compared with the existing technology, the instant vegetables and fruits directly fall into the collection box, causing the vegetables and fruits to rot and be destroyed;

[0026] 2. In the utility model, by using the threaded rod, threaded cylinder, sliding plate, connecting block, connecting block, spring, T-shaped plate, square plate, brush and other structures in coordination, the surface of the fruit with burrs or dust due to the rough surface can be cleaned. Compared with the adsorption in the prior art, it is difficult to ensure the normal operation and lasting adsorption effect due to the dust on the adsorption plate due to long-term use, and the height can be adjusted to adapt to fruits of different heights; BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional diagram of an automatic fruit and vegetable packaging device based on a visual system proposed by the utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the rotating arm of an automatic fruit and vegetable packaging device based on a visual system proposed by the utility model;

[0029] Figure 3 This is a schematic diagram of the structure of a special-shaped plate of an automatic fruit and vegetable packaging device based on a visual system proposed by the utility model;

[0030] Figure 4This is a schematic diagram of the internal structure of a support frame of an automatic fruit and vegetable packaging device based on a visual system proposed by the utility model;

[0031] Figure 5 This is a schematic diagram of the internal structure of a sliding plate of an automatic fruit and vegetable packaging device based on a vision system proposed by the utility model.

[0032] In the figure, 1. bottom plate; 2. collecting table; 3. control box; 4. round plate; 5. trapezoidal column; 6. turning mechanism 1; 7. rotating big arm; 8. turning mechanism 2; 9. rotating small arm; 10. motor; 11. column; 12. fixed column; 13. special-shaped plate; 14. vacuum block; 15. adapter plate; 16. adsorption tube; 17. square block; 18. adsorption plate; 19. connecting pipe; 20. transmission mechanism; 21. support frame; 22. rotating column; 23. arc plate; 24. limit plate; 25. threaded rod; 26. threaded cylinder; 27. sliding plate; 28. connecting block; 29. ​​connecting block; 30. spring; 31. T-shaped plate; 32. square plate; 33. brush; 34. visual instrument. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1 - Attachment Figure 5 , further details of this application are given.

[0034] An automatic fruit and vegetable packaging device based on a visual system, referring to Figure 1 - Figure 3 , including a bottom plate 1, a plurality of collecting tables 2 are fixedly connected to the right end of the top side of the bottom plate 1 to limit the collecting box, a supporting assembly is arranged at the right part of the top side of the bottom plate 1, and the supporting assembly includes a control box 3, the right part of the top side of the bottom plate 1 is fixedly connected to the bottom side of the control box 3, a circular plate 4 is fixedly connected to the top side of the control box 3 for connecting a trapezoidal column 5, a trapezoidal column 5 is fixedly connected to the top side of the circular plate 4, a turning mechanism 6 is arranged inside the supporting assembly, two rotating arms 7 can be rotated by the turning mechanism 6, two rotating arms 7 are fixedly connected to the outside of the turning mechanism 6, and the far ends of the two rotating arms 7 are both arranged with turning mechanisms 2 8, so that the turning mechanisms 2 8 can operate stably, and a rotating small arm 9 is fixedly connected to the top side of the turning mechanism 2 8, which then drives the rotating small arm 9 to rotate;

[0035] A driving assembly is provided at the far end of the two rotating arms 9, and the two driving assemblies include a motor 10, a driving source. The outsides of the two motors 10 are respectively fixedly connected to the far ends of the two rotating arms 9, so that the motor 10 can operate stably. The driving end of the motor 10 is fixedly connected to the column 11, and the column 11 is driven to rotate by the driving motor 10. A rotating assembly is provided on the far side of the two driving assemblies. The two rotating assemblies include a fixed column 12. The proximal sides of the two fixed columns 12 are respectively fixedly connected to the far sides of the two columns 11, and the fixed columns 12 are driven to rotate by the columns 11. The far sides of the two fixed columns 12 are fixedly connected to the special-shaped plates 13, thereby driving the special-shaped plates 13 to rotate. The far sides of the two rotating assemblies are rotatably connected to the vacuum blocks 14.

[0036] An adapter plate 15 is fixedly connected to the far side of the two vacuum blocks 14. The air inside the adapter plate 15 is extracted by connecting the vacuum blocks 14. An adsorption component is arranged on the bottom side of the vacuum block 14. The adsorption component includes an adsorption tube 16. The top side of the adsorption tube 16 is fixedly connected to the vacuum block 14. Air is sent into the interior of the vacuum block 14 through the adsorption tube 16. A square block 17 is fixedly connected to the bottom side of the adsorption tube 16. An adsorption plate 18 is fixedly connected to the inner wall of the bottom end of the adsorption component. After the adsorption plate 18 comes into contact with fruits and vegetables, the internal air is extracted and then passes through the interior of the vacuum block 14 through the adsorption tube 16. A connecting pipe 19 is fixedly connected to the right side of the adapter plate 15. A transmission component is arranged on the left end of the top side of the bottom plate 1. The transmission component includes a transmission mechanism 20 for transporting fruits and vegetables. The left end of the top side of the bottom plate 1 is fixedly connected to the bottom side of the transmission mechanism 20.

[0037] Reference Figure 1 , Figure 4 and Figure 5 The top side of the transmission mechanism 20 is fixedly connected with a support frame 21, and the middle part of the support frame 21 is rotatably connected with a rotating column 22. The rotating column 22 can rotate stably through the restriction of the support frame 21. The top side of the rotating column 22 is fixedly connected with an arc plate 23. The rotating column 22 is driven to rotate by holding the arc plate 23. The outer part of the rotating column 22 is fixedly connected with a limiting disk 24, thereby driving the limiting disk 24 to rotate and limiting the rotating column 22 to prevent the rotating column 22 from slipping. The bottom side of the rotating column 22 is fixedly connected with a threaded rod 25, and the threaded rod 25 is driven to rotate by the rotating column 22. The outer thread of the threaded rod 25 is connected with a threaded cylinder 26, and the threaded cylinder 26 is driven to move up and down by the threaded rod 25. The bottom side of the threaded cylinder 26 is fixedly connected with a sliding plate 27, and the sliding plate 27 is driven to move up and down together by the threaded cylinder 26.

[0038] The two sliding plates 27 are fixedly connected to the far side with a connecting block 28, and the connecting block 28 is driven to slide up and down by the sliding plate 27. The outer parts of the two connecting blocks 28 are respectively slidably connected to the inner walls of the front and rear ends of the support frame 21. The connecting blocks 28 can slide vertically due to the restriction of the support frame 21. The far side of the two connecting blocks 28 is fixedly connected to the connecting block 29, and the connecting block 29 is driven to rotate by the connecting block 28. The near side of the two connecting blocks 29 is respectively slidably connected to the front and rear sides of the support frame 21. The connecting blocks 29 can slide vertically due to the restriction of the support frame 21.

[0039] A plurality of springs 30 are fixedly connected to the top side of the inner wall of the sliding plate 27, and a T-shaped plate 31 is fixedly connected to the bottom side of the plurality of springs 30. By fixing the two sides of the springs 30, the springs 30 can be evenly stressed. The outer portion of the T-shaped plate 31 is slidably connected to the inner wall of the sliding plate 27. The sliding plate 27 can slide vertically due to the restriction of the sliding plate 27. A square plate 32 is fixedly connected to the bottom side of the T-shaped plate 31, and a plurality of brushes 33 are fixedly connected to the bottom side of the square plate 32 for cleaning fruits and vegetables. A visual instrument 34 is fixedly connected to the right end of the top side of the support frame 21 for detecting whether fruits and vegetables are passing by.

[0040] The implementation principle of the embodiment of the present application is as follows: after the fruits and vegetables are transported to a suitable position by the transmission mechanism 20, the two rotating arms 7 are driven to rotate by the flip mechanism 1 6, and then the rotating small arms 9 are driven to rotate by the flip mechanism 2 8, so that the rotating small arms 9 can rotate to the top of the fruits and vegetables. At this time, the motor 10 drives the column 11 to rotate, thereby driving the fixed column 12 to rotate, and the connection tube 19 is used to limit the adapter plate 15 and fix the adapter plate 15 and the vacuum block 14, so that the special-shaped plate 13 can rotate with the fixed column 12 as the center point, thereby pushing the vacuum block 14 to move downward. After moving to a suitable position, the air inside the adsorption plate 18 after contacting the fruits and vegetables is extracted through vacuum adsorption. At this time, the fruit and vegetable adsorption column can be used in the reverse operation device to stably place the fruits and vegetables in the collection box that is engaged with the inner wall of the collection table 2, thereby avoiding the damage of the fruits and vegetables caused by the fruits and vegetables falling vertically into the collection box in the prior art;

[0041] In addition, during the transportation of fruits and vegetables, different fruits and vegetables will be encountered, and it is difficult to avoid dust attached to the surface of the fruits and vegetables. This is achieved by holding the curved plate 23 and applying a rotational force to drive the rotating column 22 to rotate, and then drive the limit plate 24 to rotate on the inner wall of the support frame 21 to limit it. At the same time, the rotating column 22 will also drive the threaded rod 25 to rotate, and the threaded barrel 26 with threads on the outside of the threaded rod 25 is fixed to the top side of the sliding plate 27, and the connecting blocks 28 fixedly connected on the front and rear sides of the sliding plate 27 slide on the front and rear ends of the support frame 21, and the threaded barrel 26 is rotated by using the fixation of the connecting block 28 and the connecting block 29, so that the threaded barrel 26 can be driven to move up and down after the threaded rod 25 rotates, and then the brush 33 is pushed up and down to clean fruits and vegetables of different sizes.

[0042] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An automatic fruit and vegetable packaging device based on a vision system, comprising a bottom plate (1), characterized in that: A plurality of collecting tables (2) are fixedly connected to the right end of the top side of the bottom plate (1), a support assembly is provided at the right part of the top side of the bottom plate (1), a turning mechanism (6) is provided inside the support assembly, two rotating arms (7) are fixedly connected to the outside of the turning mechanism (6), the two rotating arms (7) are provided with a turning mechanism (8) at their far ends, the top side of the turning mechanism (8) is fixedly connected to a rotating arm (9), the two rotating arms (9) are provided with a driving mechanism at their far ends. A driving assembly is provided on the opposite sides of the two driving assemblies, and a rotating assembly is provided on the opposite sides of the two rotating assemblies. A vacuum block (14) is rotatably connected to the opposite sides of the two vacuum blocks (14). A transfer plate (15) is fixedly connected to the opposite sides of the two vacuum blocks (14). An adsorption assembly is provided on the bottom side of the vacuum block (14). An adsorption plate (18) is fixedly connected to the inner wall of the bottom end of the adsorption assembly. A connecting pipe (19) is fixedly connected to the right side of the transfer plate (15). A transmission assembly is provided on the left end of the top side of the bottom plate (1).

2. The automatic fruit and vegetable packaging equipment based on a visual system according to claim 1, characterized in that: The transmission assembly comprises a transmission mechanism (20), the left end portion of the top side of the bottom plate (1) is fixedly connected to the bottom side of the transmission mechanism (20), the top side of the transmission mechanism (20) is fixedly connected to a support frame (21), the middle part of the support frame (21) is rotatably connected to a rotating column (22), the top side of the rotating column (22) is fixedly connected to an arc plate (23), the outside of the rotating column (22) is fixedly connected to a limiting disk (24), the bottom side of the rotating column (22) is fixedly connected to a threaded rod (25), and the outside of the threaded rod (25) is threadedly connected to a threaded cylinder (26), a sliding plate (27) is fixedly connected to the bottom side of the threaded cylinder (26), a connecting block (28) is fixedly connected to the far side of the two sliding plates (27), a connecting block (29) is fixedly connected to the far side of the two connecting blocks (28), a plurality of springs (30) are fixedly connected to the top side of the inner wall of the sliding plate (27), a T-shaped plate (31) is fixedly connected to the bottom side of the plurality of springs (30), a square plate (32) is fixedly connected to the bottom side of the T-shaped plate (31), and a plurality of brushes (33) are fixedly connected to the bottom side of the square plate (32).

3. The automatic fruit and vegetable packaging equipment based on a visual system according to claim 1, characterized in that: The support assembly comprises a control box (3), the top right portion of the base plate (1) is fixedly connected to the bottom side of the control box (3), the top side of the control box (3) is fixedly connected to a circular plate (4), and the top side of the circular plate (4) is fixedly connected to a trapezoidal column (5).

4. The automatic fruit and vegetable packaging equipment based on a visual system according to claim 3, characterized in that: The two driving assemblies each comprise a motor (10), the exteriors of the two motors (10) being respectively fixedly connected to the far ends of the two rotating arms (9), and the driving ends of the motors (10) being fixedly connected to a column (11).

5. The automatic fruit and vegetable packaging device based on a visual system according to claim 4, characterized in that: The two rotating assemblies each comprise a fixed column (12), the adjacent sides of the two fixed columns (12) being fixedly connected to the distant sides of the two upright columns (11), respectively, and the distant sides of the two fixed columns (12) being fixedly connected to a special-shaped plate (13).

6. The automatic fruit and vegetable packaging equipment based on a vision system according to claim 2, characterized in that: The exteriors of the two connection blocks (28) are respectively slidably connected to the inner walls of the front and rear ends of the support frame (21), and the adjacent sides of the two connection blocks (29) are respectively slidably connected to the front and rear sides of the support frame (21).

7. The automatic fruit and vegetable packaging equipment based on a vision system according to claim 2, characterized in that: The outside of the T-shaped plate (31) is slidably connected to the inner wall of the sliding plate (27), and the top right end of the support frame (21) is fixedly connected to a visual instrument (34).

8. The automatic fruit and vegetable packaging equipment based on a vision system according to claim 2, characterized in that: The adsorption assembly comprises an adsorption tube (16), the top side of the adsorption tube (16) is fixedly connected to the vacuum block (14), and the bottom side of the adsorption tube (16) is fixedly connected to a square block (17).

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