A device for collecting particles on the inner wall of a container based on the principle of electrostatic adsorption

Abstract

The present invention relates to the technical field of biochemical experiment auxiliary equipment, and specifically discloses a container inner wall particle collection device based on the electrostatic adsorption principle, comprising: a base, one end of the base is fixedly connected to two support rods, and one end of the two support rods is commonly fixedly connected to a controller, a fixing seat is installed in the middle of the top of the controller, and an electrostatic pen is movably connected and inserted in the fixing seat, the electrostatic pen comprises a pen body, a display screen, a pen holder and a mounting structure, the display screen is arranged at the upper part of one end of the pen body, the pen holder is fixedly connected to the bottom end of the pen body, and the base comprises a bottom plate, a placement slot, a slot cover and a first groove; the present invention quickly conducts away the charge in the experimental instrument by arranging the electrostatic pen and a thin film conductive sheet, avoids part of the powder adhering to the inner wall of the experimental instrument and the operator's hand during the weighing process, thereby avoiding experimental operation difficulties and pollution risks, and realizes convenient transfer of powder or collection of trace powder through the electrostatic pen.

Description

Technical Field

[0001] The invention belongs to the technical field of biochemical experiment auxiliary equipment, and in particular relates to a device for collecting particles on the inner wall of a container based on the principle of electrostatic adsorption. Background Art

[0002] In laboratory research and industrial production, it is often necessary to handle trace amounts of powder samples, such as chemical reagents, pharmaceutical powders, nanomaterials, etc. However, since powder samples are easily affected by static electricity, powder often adheres to experimental instruments or the hands of operators, causing operational difficulties and contamination risks. In order to solve this problem, a variety of electrostatic treatment equipment and methods have been proposed. For example, some static elimination rods or static eliminators can be used to neutralize static electricity to reduce the electrostatic adsorption of powders. However, these devices often cannot achieve precise powder adsorption and movement, the operation process is cumbersome, and may have a negative impact on experimental samples. In addition, although traditional vacuum cleaners and vacuum pens can be used to clean powder, they lack electrostatic adsorption function and cannot meet the precise processing requirements of powder samples.

[0003] Therefore, a new type of container inner wall particle collection device based on the principle of electrostatic adsorption is needed, which can effectively neutralize the static electricity of powder samples and has the functions of powder adsorption and movement to improve the convenience and accuracy of experimental operations while reducing the risk of contamination. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for collecting particles on the inner wall of a container based on the principle of electrostatic adsorption, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A device for collecting particles on the inner wall of a container based on the principle of electrostatic adsorption, comprising:

[0007] base;

[0008] One end of the base is fixedly connected to two support rods, and one end of the two support rods is commonly fixedly connected to a controller, a fixing seat is installed in the middle of the top of the controller, and an electrostatic pen is movably inserted in the fixing seat;

[0009] The electrostatic pen includes a pen body, a display screen, a pen holder, and a mounting structure. The display screen is provided at the upper portion of one end of the pen body. Four buttons are provided at equal distances at one end of the pen body. The pen holder is fixedly connected to the bottom end of the pen body. The mounting structure is fixedly connected to the bottom end of the pen holder. The pen body is movably connected to a fixing base.

[0010] The base includes a bottom plate, a placement groove, a groove cover and a first groove. The placement groove is opened on one side of the top of the bottom plate, and the groove cover is movably connected between the inner walls on both sides of the placement groove. The first groove is opened on the other side of the top of the bottom plate. One side of the inner wall of the first groove is fixedly connected to two groups of first springs in a group, and the two groups of first springs are fixedly connected to a clamping plate on one side away from the inner wall of the first groove. The bottom plate is fixedly connected to the support rod.

[0011] Preferably, the mounting structure includes a clamping structure, a limiting rod, an arc-shaped plate, a limiting groove, a transparent cover and a limiting plate. Two limiting rods, two arc-shaped plates and two limiting grooves are provided, and the two limiting grooves are respectively opened in the middle of the opposite surfaces of the two arc-shaped plates. The two limiting rods are fixedly connected to the outer surfaces of the two clamping structures, the limiting plates are movably inserted and connected to the outer surfaces of the clamping structures, the transparent cover is fixedly inserted and connected to the outer surfaces of the two arc-shaped plates, the two limiting rods are respectively movably inserted and connected to the two limiting grooves, and the clamping structure is fixedly connected to the pen body.

[0012] Preferably, the clamping structure includes a connecting tube, a connecting hole, a limiting block, a connecting rod, a fixing groove, a pen tip, a positioning structure and a conductive area. There are two connecting holes and two limiting blocks, and the two connecting holes are respectively opened on the outer surfaces on both sides of the connecting tube. The two limiting blocks are respectively fixedly connected to the inner wall of the connecting tube. The connecting rod is movably inserted and connected in the connecting tube. The pen tip is fixedly connected to the bottom end of the connecting rod. The conductive area is arranged at the bottom end of the pen tip. The fixing groove is opened at the top of the connecting rod. Positioning grooves are opened on both sides of the outer surface of the connecting rod. The positioning structure is movably inserted and connected in the two connecting holes. The connecting tube and the two limiting rods are fixedly connected together.

[0013] Preferably, the top end of the limiting plate is fixedly connected to the bottom end of the connecting pipe, and the limiting plate and the connecting rod are movably connected together.

[0014] Preferably, the positioning structure includes a second spring, a movable plate, a pressing rod and a clamping block. The movable plate, the pressing rod and the clamping block are each provided with two, and the two movable plates are respectively fixedly connected to the two ends of the second spring, the two pressing rods are respectively fixedly connected to the end of the two movable plates away from the second spring, the two clamping blocks are respectively fixedly connected to the bottom ends of the two movable plates, and the pressing rods are respectively movably connected to the two connecting holes.

[0015] Preferably, the two movable plates are movably inserted and connected in the fixing groove, and the two clamping blocks are movably inserted and connected in the two positioning grooves respectively.

[0016] Preferably, the fixing seat includes a mounting seat, a mounting groove, a rubber layer, a connecting block, a supporting groove and a second groove, the mounting groove is opened at one end of the mounting seat, the rubber layer is fixedly connected to the inner wall of the mounting groove, the connecting block is fixedly connected to the inner side of the mounting seat, the supporting groove is opened at the top of the connecting block, the second groove is opened at one end of the connecting block, and the mounting seat is installed together with the controller.

[0017] Preferably, the mounting groove is movably connected to the pen body, the supporting groove is movably connected to the bottom end of the pen body, and the second groove is movably connected to the pen holder.

[0018] Preferably, two pads are fixedly connected to both sides of the bottom end of the base, a display and a plurality of control keys are provided at one end of the controller, one end of the controller is fixedly connected to a limit seat, a thin film conductive sheet is movably inserted and connected in the limit seat, a first wire is fixedly connected between the thin film conductive sheet and the controller, a second wire is fixedly connected between the electrostatic pen and the controller, and a humidity detector is provided on one side of the controller.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) By setting the pen body, mounting structure, connecting rod and pen head, when static electricity needs to be eliminated, the thin film conductive sheet is attached to the inner wall of one of the containers for a few seconds to half a minute to guide the static charge to the ground, and then retracted and placed on the limit seat. Then the static pen is inserted into the container and the static pen is switched to static elimination mode by pressing a button. The static pen releases high-voltage ionized air to neutralize the residual static charge, thereby preventing some powder from adhering to the inner wall of the experimental instrument and the operator's hands during the weighing process, thereby simplifying the experimental operation difficulties and avoiding the risk of contamination.

[0021] (2) By setting a second spring, a movable plate, a pressing rod and a clamping block, the connecting rod and the pen tip are both set as disposable tools. Press the pressing rods on both sides to make the movable plate squeeze the second spring, and the connecting rod is inserted through the limit plate into the connecting tube, and the top of the connecting rod is tightly attached to the bottom ends of the two limit blocks. Loosen the pressing rod, use the resilience of the second spring to make the movable plate expand outward, and make the clamping block inserted into the positioning groove, so that the connecting rod is fixed, so that the connecting rod and the pen tip are easy to disassemble and replace.

[0022] (3) When powder adsorption is required, the conductive sheet is retracted and placed on the limit seat, and the electrostatic pen is switched to the electrostatic adsorption mode using a button. The electrostatic pen generates static electricity and adsorbs powder through the pen tip. The electrostatic pen is moved to the top of another container, and the charge polarity of the electrostatic pen is adjusted using a button to release the powder into another container, thereby facilitating the transfer of powder, simplifying the experimental operation, and improving the overall efficiency of chemical experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A perspective view of the present invention;

[0024] Figure 2 A perspective view of the base of the present invention;

[0025] Figure 3 is a three-dimensional diagram of the electrostatic pen of the present invention;

[0026] Figure 4 A perspective view of the mounting structure of the present invention;

[0027] Figure 5 This is one of the cross-sectional views of the clamping structure of the present invention;

[0028] Figure 6 This is the second cross-sectional view of the clamping structure of the present invention;

[0029] Figure 7 This is a schematic diagram of the connection between the connecting rod and the positioning structure of the present invention;

[0030] Figure 8 A three-dimensional diagram of the fixing seat of the present invention;

[0031] In the figure: 1. Base; 2. Pad; 3. Support rod; 4. Controller; 5. Fixing seat; 6. Electrostatic pen; 7. Display; 8. Control key; 9. First wire; 10. Limiting seat; 11. Thin film conductive sheet; 12. Second wire; 13. Humidity detector; 101. Bottom plate; 102. Placement slot; 103. Slot cover; 104. First groove; 105. First spring; 106. Pressing plate; 61. Pen body; 62. Display; 63. Button; 64. Pen holder; 65. Mounting structure; 651. Clamping structure; 65 2. Limit rod; 653. Arc plate; 654. Limit groove; 655. Transparent cover; 656. Limit plate; 111. Connecting tube; 112. Connecting hole; 113. Limit block; 114. Connecting rod; 115. Fixing groove; 116. Positioning groove; 117. Pen tip; 118. Positioning structure; 119. Conductive area; 81. Second spring; 82. Movable plate; 83. Pressing rod; 84. Clamping block; 51. Mounting seat; 52. Mounting groove; 53. Rubber layer; 54. Connecting block; 55. Support groove; 56. Second groove. DETAILED DESCRIPTION

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Example 1:

[0034] See also Figure 1 - Figure 8 As shown, a device for collecting particles on the inner wall of a container based on the principle of electrostatic adsorption comprises:

[0035] Base 1;

[0036] One end of the base 1 is fixedly connected to two support rods 3, and one end of the two support rods 3 is fixedly connected to a controller 4. A fixing seat 5 is installed in the middle of the top of the controller 4, and an electrostatic pen 6 is movably inserted in the fixing seat 5.

[0037] The electrostatic pen 6 includes a pen body 61, a display screen 62, a pen holder 64, and a mounting structure 65. The display screen 62 is provided at the upper portion of one end of the pen body 61. Four buttons 63 are provided at equal intervals at one end of the pen body 61. The pen holder 64 is fixedly connected to the bottom end of the pen body 61. The mounting structure 65 is fixedly connected to the bottom end of the pen holder 64. The pen body 61 is movably connected to the fixing base 5.

[0038] The base 1 includes a bottom plate 101, a placement groove 102, a groove cover 103 and a first groove 104. The placement groove 102 is opened on one side of the top of the bottom plate 101, and the groove cover 103 is movably connected between the inner walls of the two sides of the placement groove 102. The first groove 104 is opened on the other side of the top of the bottom plate 101. One side of the inner wall of the first groove 104 is fixedly connected to two groups of first springs 105 in a group, and the two groups of first springs 105 are fixedly connected to a pressing plate 106 on the side away from the inner wall of the first groove 104. The bottom plate 101 is fixedly connected to the support rod 3;

[0039] Two pads 2 are fixedly connected to both sides of the bottom of the base 1, a display 7 and several control keys 8 are provided at one end of the controller 4, one end of the controller 4 is fixedly connected to a limit seat 10, and a thin film conductive sheet 11 is movably inserted in the limit seat 10, a first wire 9 is fixedly connected between the thin film conductive sheet 11 and the controller 4, a second wire 12 is fixedly connected between the electrostatic pen 6 and the controller 4, and the second wire 12 is set to be a power line for generating high voltage electricity in the adsorption mode and the repulsion mode. A humidity detector 13 is provided on one side of the controller 4. The electrostatic adsorption effect is significantly affected by the air humidity. By setting the humidity detector 13, it can be used to adjust the electrostatic adsorption power.

[0040] Depend on Figure 1 and Figure 3 - Figure 7It can be seen that the mounting structure 65 includes a clamping structure 651, a limiting rod 652, a curved plate 653, a limiting groove 654, a transparent cover 655 and a limiting plate 656. There are two limiting rods 652, two curved plates 653 and two limiting grooves 654, and the two limiting grooves 654 are respectively opened in the middle of the opposite surfaces of the two curved plates 653. The two limiting rods 652 are fixedly connected to the outer surfaces of the two clamping structures 651. The limiting plate 656 is movably connected to the outer surfaces of the clamping structures 651. The transparent cover 655 is fixedly connected to the outer surfaces of the two curved plates 653. The two limiting rods 652 are movably connected to the two limiting grooves 654 respectively. The clamping structure 651 is fixedly connected to the pen holder 64.

[0041] The clamping structure 651 includes a connecting tube 111, a connecting hole 112, a limiting block 113, a connecting rod 114, a fixing groove 115, a pen tip 117, a positioning structure 118 and a conductive area 119. There are two connecting holes 112 and two limiting blocks 113, and the two connecting holes 112 are respectively opened on the outer surfaces of both sides of the connecting tube 111. The two limiting blocks 113 are respectively fixedly connected to the inner wall of the connecting tube 111. The connecting rod 114 is movably inserted and connected in the connecting tube 111. The pen tip 117 is fixedly connected to the bottom end of the connecting rod 114. The conductive area 119 is provided at the bottom end of the pen tip 117. The fixing groove 115 is opened at the top of the connecting rod 114. Positioning grooves 116 are opened on both sides of the outer surface of the connecting rod 114. The positioning structure 118 is movably inserted and connected in the two connecting holes 112. The connecting tube 111 and the two limiting rods 652 are fixedly connected together.

[0042] The positioning structure 118 includes a second spring 81, a movable plate 82, a pressing rod 83 and a clamping block 84. There are two movable plates 82, two pressing rods 83 and two clamping blocks 84, and the two movable plates 82 are respectively fixedly connected to the two ends of the second spring 81, the two pressing rods 83 are respectively fixedly connected to the ends of the two movable plates 82 away from the second spring 81, the two clamping blocks 84 are respectively fixedly connected to the bottom ends of the two movable plates 82, and the pressing rods 83 are respectively movably connected to the two connecting holes 112.

[0043] As can be seen from the above, by pressing the pressing rods 83 on both sides, the pressing rods 83 slide in the two connecting holes 112 and push the movable plate 82 fixedly connected thereto to move, so that the movable plate 82 squeezes the second spring 81 fixedly connected thereto, causing the second spring 81 to contract, and the connecting rod 114 passes through the limit plate 656 and is inserted into the connecting tube 111, and the top end of the connecting rod 114 is tightly attached to the bottom ends of the two limit blocks 113, and the pressing rod 83 is released, and the elasticity of the second spring 81 is used to make the movable plate 82 move to When the movable plate 82 expands outward, it will drive the clamping block 84 fixedly connected to it to move, and the clamping block 84 will be inserted into the positioning groove 116, so that the connecting rod 114 is fixed in the connecting tube 111, pulling the transparent cover 655, the transparent cover 655 moves downward, and drives the arc-shaped plate 653 fixedly connected to it to move, so that the transparent cover 655 moves to the pen tip 117. By setting the transparent cover 655, the area where the pen tip 117 and the powder are not in contact is shielded, preventing the electrostatic field from spreading to non-target areas.

[0044] For details about the above, refer to Figures 4 to 6 As shown, the top end of the limiting plate 656 is fixedly connected to the bottom end of the connecting tube 111, and the limiting plate 656 is movably connected with the connecting rod 114;

[0045] The two movable plates 82 are movably inserted into the fixing groove 115 , and the two clamping blocks 84 are movably inserted into the two positioning grooves 116 .

[0046] As can be seen from the above, the snap-fit ​​block 84 and the positioning groove 116 are inserted together to limit the connecting rod 114, thereby installing the connecting rod 114. The outer shell of the pen body 61 is set to an insulating material, and the pen tip 117 is set to a metal conductive material. The pen tip 117 can be wiped or replaced with a replacement head for the next reagent adsorption.

[0047] Example 2:

[0048] refer to Figure 8 As shown, the fixing base 5 includes a mounting base 51, a mounting groove 52, a rubber layer 53, a connecting block 54, a supporting groove 55 and a second groove 56. The mounting groove 52 is opened at one end of the mounting base 51, the rubber layer 53 is fixedly connected to the inner wall of the mounting groove 52, the connecting block 54 is fixedly connected to the inner side of the mounting base 51, the supporting groove 55 is opened at the top of the connecting block 54, and the second groove 56 is opened at one end of the connecting block 54. The mounting base 51 is installed together with the controller 4.

[0049] As can be seen from the above, the mounting base 51 is installed on the top of the controller 4 by screws, and then the pen body 61 is inserted into the mounting groove 52. Since the surface of the rubber layer 53 has a certain roughness and viscosity, the pen body 61 generates resistance when it contacts its surface. Then the bottom end of the pen body 61 is inserted into the supporting groove 55, and the pen shaft 64 is inserted into the second groove 56, thereby completing the placement of the electrostatic pen 6, so that the fixing base 5 supports the electrostatic pen 6.

[0050] Preferably, the mounting groove 52 is movably connected to the pen body 61 , the supporting groove 55 is movably connected to the bottom end of the pen body 61 , and the second groove 56 is movably connected to the pen shaft 64 .

[0051] As can be seen from the above, the electrostatic pen 6 can be limited by providing the mounting groove 52 , the supporting groove 55 and the second groove 56 .

[0052] Working principle: insert two utensils into the first groove 104 from both ends of the bottom plate 101 respectively, the utensils squeeze the pressing plate 106, the pressing plate 106 pushes the first spring 105, causing the first spring 105 to contract, thereby fixing the utensils between the pressing plate 106 and one side of the inner wall of the first groove 104, and then remove the electrostatic pen 6 from the fixed seat 5, and then remove the corresponding connecting rod 114 from the placement groove 102, press the pressing rods 83 on both sides, so that the movable plate 82 pushes the movable plate 82 to move, so that the movable plate 82 The second spring 81 is squeezed to shrink the second spring 81, and the connecting rod 114 is inserted into the connecting tube 111 through the limiting plate 656, and the top of the connecting rod 114 is tightly attached to the bottom ends of the two limiting blocks 113. The pressing rod 83 is released, and the elasticity of the second spring 81 is used to expand the movable plate 82 outward, and the clamping block 84 is inserted into the positioning groove 116, so that the connecting rod 114 is fixed. Here, the connecting rod 114 and the pen tip 117 are both set as disposable tools, which are convenient for disassembly and replacement. When static electricity needs to be eliminated, The thin film conductive sheet 11 is attached to the inner wall of one of the containers and kept for a few seconds to half a minute to guide the static charge to the ground, then retracted and placed in the limit seat 10, and then the electrostatic pen 6 is inserted into the container. The electrostatic pen 6 is switched to the static elimination mode through the button 63. The electrostatic pen 6 releases high-voltage ionized air to neutralize the residual static charge. The electrostatic pen 6 keeps working for a few seconds to a few minutes to ensure that the static electricity is completely neutralized, so as to avoid some powder adhering to the inner wall of the experimental instrument and the operator's hands during the weighing process, thereby avoiding causing difficulties in experimental operation and pollution risks. When powder adsorption is required, the electrostatic pen 6 is switched to the electrostatic adsorption mode using the button 63. The electrostatic pen 6 generates static electricity and adsorbs the powder through the pen tip 117. The electrostatic pen 6 is moved to the top of another container, and the charge polarity of the electrostatic pen 6 is adjusted using the button 63 to release the powder into the other container. It is noted that the voltage of different gears is selected so that the pen tip 117 generates different amounts of static charge and weighs different weights of pharmaceutical powder. The powder is non-flammable and non-oxidizing powder, so that static discharge will not cause an explosion risk.

[0053] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A device for collecting particles on the inner wall of a container based on the principle of electrostatic adsorption, characterized in that: include: Base (1); One end of the base (1) is fixedly connected to two support rods (3), and one end of the two support rods (3) is commonly fixedly connected to a controller (4); a fixing seat (5) is installed in the middle of the top end of the controller (4), and an electrostatic pen (6) is movably inserted and connected in the fixing seat (5); The electrostatic pen (6) comprises a pen body (61), a display screen (62), a pen holder (64) and a mounting structure (65); the display screen (62) is arranged on the upper part of one end of the pen body (61); four buttons (63) are arranged at equal distances on one end of the pen body (61); the pen holder (64) is fixedly connected to the bottom end of the pen body (61); the mounting structure (65) is fixedly connected to the bottom end of the pen holder (64); and the pen body (61) and the fixing seat (5) are movably connected together; The base (1) includes a bottom plate (101), a placement groove (102), a groove cover (103) and a first groove (104); the placement groove (102) is provided on one side of the top end of the bottom plate (101); the groove cover (103) is movably connected between the inner walls of both sides of the placement groove (102); the first groove (104) is provided on the other side of the top end of the bottom plate (101); two groups of first springs (105) are fixedly connected to one side of the inner wall of the first groove (104); and the two groups of first springs (105) are fixedly connected to a pressing plate (106) on one side of the inner wall away from the first groove (104); the bottom plate (101) is fixedly connected to the support rod (3); Two pads (2) are fixedly connected to both sides of the bottom end of the base (1); a display (7) and a plurality of control keys (8) are provided at one end of the controller (4); one end of the controller (4) is fixedly connected to a limit seat (10); a thin film conductive sheet (11) is movably inserted and connected in the limit seat (10); a first wire (9) is fixedly connected between the thin film conductive sheet (11) and the controller (4); a second wire (12) is fixedly connected between the electrostatic pen (6) and the controller (4); and a humidity detector (13) is provided on one side of the controller (4).

2. The device for collecting particles from the inner wall of a container based on the principle of electrostatic adsorption according to claim 1, characterized in that: The mounting structure (65) includes a clamping structure (651), a limiting rod (652), an arc-shaped plate (653), a limiting groove (654), a transparent cover (655) and a limiting plate (656). The limiting rod (652), the arc-shaped plate (653) and the limiting groove (654) are each provided with two, and the two limiting grooves (654) are respectively opened in the middle of the opposite surfaces of the two arc-shaped plates (653). The two limiting rods (652) are fixedly connected to the outer surfaces of the two clamping structures (651). The limiting plates (656) are movably connected to the outer surfaces of the clamping structures (651). The transparent cover (655) is fixedly connected to the outer surfaces of the two arc-shaped plates (653). The two limiting rods (652) are movably connected to the two limiting grooves (654) respectively. The clamping structure (651) is fixedly connected to the pen holder (64).

3. The device for collecting particles from the inner wall of a container based on the principle of electrostatic adsorption according to claim 2, characterized in that: The clamping structure (651) includes a connecting tube (111), a connecting hole (112), a limiting block (113), a connecting rod (114), a fixing groove (115), a pen tip (117), a positioning structure (118) and a conductive area (119). The connecting hole (112) and the limiting block (113) are both provided with two, and the two connecting holes (112) are respectively opened on the outer surfaces of both sides of the connecting tube (111). The two limiting blocks (113) are respectively fixedly connected to the inner wall of the connecting tube (111). The connecting rod (114) is fixed to the inner wall of the connecting tube (111). 14) is movably inserted and connected in the connecting tube (111), the pen tip (117) is fixedly connected to the bottom end of the connecting rod (114), the conductive area (119) is arranged at the bottom end of the pen tip (117), the fixing groove (115) is opened at the top end of the connecting rod (114), and positioning grooves (116) are opened on both sides of the outer surface of the connecting rod (114), the positioning structure (118) is movably inserted and connected in the two connecting holes (112), and the connecting tube (111) is fixedly connected to the two limit rods (652).

4. The device for collecting particles from the inner wall of a container based on the principle of electrostatic adsorption according to claim 2, characterized in that: The top end of the limiting plate (656) is fixedly connected to the bottom end of the connecting pipe (111), and the limiting plate (656) and the connecting rod (114) are movably connected together.

5. The device for collecting particles from the inner wall of a container based on the principle of electrostatic adsorption according to claim 3, characterized in that: The positioning structure (118) includes a second spring (81), a movable plate (82), a pressing rod (83) and a clamping block (84). The movable plate (82), the pressing rod (83) and the clamping block (84) are each provided with two, and the two movable plates (82) are respectively fixedly connected to the two ends of the second spring (81), the two pressing rods (83) are respectively fixedly connected to one end of the two movable plates (82) away from the second spring (81), the two clamping blocks (84) are respectively fixedly connected to the bottom ends of the two movable plates (82), and the pressing rods (83) are respectively movably connected to the two connecting holes (112).

6. The device for collecting particles from the inner wall of a container based on the principle of electrostatic adsorption according to claim 5, characterized in that: The two movable plates (82) are both movably inserted and connected in the fixing groove (115), and the two clamping blocks (84) are respectively movably inserted and connected in the two positioning grooves (116).

7. The device for collecting particles from the inner wall of a container based on the principle of electrostatic adsorption according to claim 1, characterized in that: The fixing seat (5) comprises a mounting seat (51), a mounting groove (52), a rubber layer (53), a connecting block (54), a supporting groove (55) and a second groove (56); the mounting groove (52) is provided at one end of the mounting seat (51); the rubber layer (53) is fixedly connected to the inner wall of the mounting groove (52); the connecting block (54) is fixedly connected to the inner side of the mounting seat (51); the supporting groove (55) is provided at the top end of the connecting block (54); the second groove (56) is provided at one end of the connecting block (54); and the mounting seat (51) is installed together with the controller (4).

8. The device for collecting particles from the inner wall of a container based on the principle of electrostatic adsorption according to claim 7, characterized in that: The mounting groove (52) is movably connected to the pen body (61), the supporting groove (55) is movably connected to the bottom end of the pen body (61), and the second groove (56) is movably connected to the pen shaft (64).

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