Hand dust collecting device

Abstract

The invention discloses a hand dust collection device, and relates to the technical field of sample collection, the device comprises an electrostatic collection module and a dust sweeping module, the shells of the electrostatic collection module and the dust sweeping module are connected through an embedding structure, the joint is provided with a ventilation opening, and the other side of the dust sweeping module is provided with a hand inlet; an electrode used for forming an electrostatic field is arranged in the electrostatic collection module, a dust collection film is arranged on the electrode, a rotating shaft with an antistatic banister brush and a driving assembly are arranged in the dust sweeping module, the rotating shaft rotates under the action of the driving assembly and sweeps dust, an air exhaust nozzle is arranged on the outer side of the electrostatic collection module, and air is exhausted in the device through the air exhaust nozzle. The swept dust enters the electrostatic collection module along with the airflow and is deposited on the dust collection film under the action of the electric field force; according to the technical scheme, module separation is conducted on dust sweeping and dust collecting, the collecting steps are simplified, continuous sampling of multiple persons can be achieved, and dust sweeping can be conducted on the whole hand by arranging the upper anti-static soft brushes and the lower anti-static soft brushes in the dust sweeping module.

Description

Technical Field

[0001] The present invention relates to the technical field of sample collection, and more particularly, to a hand dust collection device. Background Art

[0002] Under the current trend of increasingly serious environmental pollution problems, pollutant hand-to-mouth contact has received extensive attention. Pollutants that can be contacted in the living environment usually include flame retardants, heavy metals, etc. Among them, brominated flame retardants are widely used in various products, such as textiles, children's toys, televisions, plastic products, and interior decoration. These pollutants usually adhere to dust and enter the human body through skin absorption, respiration, food intake, hand-to-mouth contact, etc., endangering human health. Especially in a specific polluted environment (such as an environment with emission sources such as factories set up nearby), the probability of ingesting pollutants (such as lead Pb, arsenic As, etc.) through hand-to-mouth contact with dust increases significantly. For high molecular weight flame retardants, tributoxyethyl phosphate (TBOEP) and phenyl phosphate flame retardants, dust ingestion (hand-to-mouth contact is one of the main ways) is the main exposure route, accounting for 73-99%; for As, in addition to food intake, dust ingestion is also an important exposure route, accounting for 21.90% of the total exposure. It can be seen that through the method of hand dust sampling, the actual situation of pollutants entering the human body through hand-to-mouth contact can be accurately reflected, and the final sampling result can also be used as an index to characterize human contact with pollutants, for evaluating the potential health risks brought by hand-to-mouth contact, and providing guidance for formulating effective prevention and control measures in the future.

[0003] The existing hand dust sample collection device is mainly a structure with rubber on the outer layer and non-woven fabric on the inner layer, which is a glove structure used for dermal exposure assessment. Its disadvantages are: 1) The non-woven fabric in the glove cannot be used continuously, and the non-woven fabric needs to be replaced after each sampling, making the entire collection process cumbersome; 2) The dust collected by rubbing the non-woven fabric with the palm will fall off slightly during the subsequent process of removing and replacing the non-woven fabric or removing the glove after the collection, affecting the subsequent test results; 3) The number of gloves required for different experiments cannot be determined. When facing a collection experiment with a large number of people, it will lead to an increase in experimental costs; 4) The existing device only collects dust on the palm and cannot sample the back of the hand, resulting in an incomplete result. Summary of the Invention

[0004] The purpose of the present invention is to provide a device for collecting hand dust using an electrostatic field to achieve the purpose of continuous sampling for multiple people and simultaneous sampling of the palm and the back of the hand, without the need to frequently replace the dust collection membrane during the collection process, and improve the sampling efficiency, aiming at the problems of cumbersome non-woven fabric replacement process, easy dust shedding, cost waste, and inability to sample the back of the hand existing in the existing hand dust collection device.

[0005] The technical solution of the present invention is: to provide a hand dust collection device, which is composed of an electrostatic collection module and a dust sweeping module;

[0006] The outside of the electrostatic collection module is set as an insulating semi-circular shell, the outside of the dust sweeping module is set as an insulating rectangular shell, the insulating semi-circular shell is tightly connected to one side of the insulating rectangular shell, a hand inlet is arranged on the other side of the insulating rectangular shell, and the insulating semi-circular shell and the insulating rectangular shell are communicated through an opening arranged at the connection part;

[0007] Electrodes are arranged at the upper and lower ends inside the insulating semi-circular shell, the electrodes are used to form an electrostatic field, a dust collection film is arranged on the electrodes, the dust collection film is used to collect dust, and an air extraction nozzle is arranged on the outer side wall of the insulating semi-circular shell, and the air extraction nozzle is used to extract air from the device;

[0008] A rotating shaft is horizontally arranged in the middle area inside the insulating rectangular shell, the rotating shaft is divided into two groups, the two groups of rotating shafts are symmetrically arranged on the upper and lower sides of the middle area, and a space for placing the palm is left between the two groups of rotating shafts; anti-static soft brushes are arranged on the rotating shaft, and the anti-static soft brushes are used to sweep off the dust on the hand; a driving component is also arranged inside the insulating rectangular shell, and the driving component is used to drive the rotating shaft to rotate.

[0009] Further, an arc-shaped groove is arranged on one side of the insulating semi-circular shell close to the insulating rectangular shell, the arc-shaped groove matches the shape of the arc surface side of the insulating semi-circular shell, and the arc surface side of the insulating semi-circular shell is arranged in the arc-shaped groove and is tightly connected to the insulating rectangular shell.

[0010] Further, the electrodes are divided into a negative electrode plate and a positive electrode plate, the negative electrode plate is arranged at the upper end inside the insulating semi-circular shell, the negative electrode plate matches the shape of the upper surface inside the insulating semi-circular shell, the positive electrode plate is arranged at the lower end inside the insulating semi-circular shell, and the positive electrode plate matches the shape of the lower surface inside the insulating semi-circular shell.

[0011] Further, the dust collection film is arranged on one side of the positive electrode plate close to the negative electrode plate, and the electrodes are electrically connected to an external high-voltage generator.

[0012] Further, the driving component is located on one side inside the insulating rectangular shell, and the driving component includes a rotating device, a gear and a chain;

[0013] The rotating device is in transmission connection with the chain, the chain is in transmission connection with the gear, the rotating shaft is fixedly connected with the gear, and the rotating device is used to drive the rotating shaft to rotate through the transmission of the chain and the gear.

[0014] Further, a fixing frame is also arranged inside the insulating rectangular shell, and the fixing frame is used to limit the rotating shaft;

[0015] The fixing frames are divided into two groups, and the two groups of fixing frames are respectively arranged on both sides of the rotating shaft. The two ends of the rotating shaft are respectively installed on the fixing frames at the corresponding positions on both sides.

[0016] Furthermore, a clamping groove is arranged on the fixing frame, and convex blocks are respectively arranged at both ends of the rotating shaft. The convex blocks are arranged in the clamping groove, and there is a gap between the convex blocks and the clamping groove. The fixing frame on the side close to the driving assembly is located between the gear and the antistatic soft brush.

[0017] Furthermore, a first opening is arranged on the side wall of the arc surface of the insulating semi-cylindrical shell, and a second opening is arranged at the corresponding position on the side wall of the groove end of the insulating rectangular shell. The insulating semi-cylindrical shell and the insulating rectangular shell are communicated through the two butt-jointed openings.

[0018] Furthermore, strip-shaped grooves are respectively arranged on both sides of the groove end of the insulating rectangular shell, and convex strips are respectively arranged at the positions corresponding to the strip-shaped grooves on both sides of the insulating semi-cylindrical shell. The convex strips and the strip-shaped grooves form a fitting structure, and the insulating semi-cylindrical shell is cooperatively connected with the insulating rectangular shell through the fitting structure.

[0019] Furthermore, the air extraction nozzle is arranged on the side wall of the cut surface of the insulating semi-cylindrical shell, and the air extraction nozzle is connected to an external air extraction pump.

[0020] The beneficial effects of the present invention are as follows:

[0021] First, the technical solution in the present invention can separate the processes of dust sweeping and dust collection into modules. For the dust sweeping process, the hand-held dust sweeping module is used for dust sweeping. For the dust collection process, the air extraction nozzle in the electrostatic collection module is used to extract air inside the device, so that the swept dust enters the electrostatic collection module and is deposited on the dust collection film under the action of the electric field force to achieve dust collection. The dust collection film in the electrostatic collection module of the present invention does not directly contact the hand. During the dust collection process, only the sampling personnel need to actively insert and withdraw their hands. The device itself does not need to be operated. After collecting multiple hand samples, the dust collection film can be replaced. Continuous multi-person sampling can be achieved. However, for the existing glove-structured collection device, the collection of each palm requires the processes of sheathing, removing, and non-woven fabric replacement, and continuous multi-person sampling cannot be achieved. Compared with the existing method of using gloves and non-woven fabric structures for dust collection, the technical solution in the present invention does not need to frequently replace the dust collection film, simplifies the collection steps, improves the collection efficiency, can be applied to collection experiments with a large number of people, and reduces the experimental cost.

[0022] Second, in the technical solution of the present invention, the separately provided electrostatic collection module can not only collect dust, but also isolate the hand from the dust collection film, solving the problem of dust falling off during the process of removing and replacing the non-woven fabric or removing the gloves after the collection is completed, improving the accuracy of the detection results. At the same time, the technical solution in the present invention can quickly assemble and separate the electrostatic collection module and the dust sweeping module through the fitting structure, realizing the rapid replacement of the dust collection film, simplifying the steps of replacing the dust collection film, and further improving the collection efficiency. Compared with the cumbersome dust collection methods in the prior art, the technical solution in the present invention realizes continuous sampling for multiple people, can be applied to collection experiments with a large number of people, and reduces the experimental cost.

[0023] Third, in the technical solution of the present invention, two sets of antistatic soft brushes are arranged up and down in the dust sweeping module, which can sweep the entire hand during collection, and the object of collecting dust is no longer limited to the palm. Compared with the dust collection devices in the prior art, the technical solution in the present invention collects hand dust samples more comprehensively, which is beneficial to improving the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and / or additional advantages of the present invention will become apparent and be readily understood in the description of the embodiments in conjunction with the following drawings, wherein:

[0025] Figure 1 is a schematic right-side structure diagram of a hand dust collection device according to an embodiment of the present invention;

[0026] Figure 2 is a schematic left-side structure diagram of a hand dust collection device according to an embodiment of the present invention;

[0027] Figure 3 is a schematic front-side structure diagram of a hand dust collection device according to an embodiment of the present invention;

[0028] Figure 4 is a schematic cross-sectional structure diagram of a hand dust collection device according to an embodiment of the present invention;

[0029] Figure 5 is a schematic internal structure diagram of the electrostatic collection module of a hand dust collection device according to an embodiment of the present invention.

[0030] Wherein, 100 - electrostatic collection module, 200 - dust sweeping module, 1 - insulating semi-cylindrical shell, 2 - insulating rectangular shell, 3 - rotating shaft, 4 - antistatic soft brush, 5 - rotating device, 6 - gear, 7 - fixing frame, 8 - chain, 9 - electrode, 10 - dust collection film, 11 - air extraction nozzle, 12 - convex strip, 13 - strip-shaped groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0031] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the following description, many specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention may be practiced in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited by the specific embodiments disclosed below.

[0033] As Figures 1 to 5 shown, this embodiment provides a hand dust collection device, which is composed of an electrostatic collection module 100 and a dust sweeping module 200.

[0034] The outside of the electrostatic collection module 100 is set as an insulating semi-circular housing 1, and the side of the insulating semi-circular housing 1 close to the dust sweeping module 200 is arc-shaped; the outside of the dust sweeping module 200 is set as an insulating rectangular housing 2, and an arc-shaped groove is provided on the side of the insulating rectangular housing 2 close to the electrostatic collection module 100. The shape of the arc-shaped groove matches the shape of the arc-shaped side of the insulating semi-circular housing 1, and the arc-shaped side of the insulating semi-circular housing 1 is arranged in the arc-shaped groove of the insulating rectangular housing 2 and is tightly connected to the insulating rectangular housing 2.

[0035] The electrostatic collection module 100 and the dust sweeping module 200 are connected through a fitting structure. Specifically, convex strips 12 are respectively provided on both sides of the insulating semi-circular housing 1, and strip-shaped grooves 13 are respectively provided on both sides of the groove end of the insulating rectangular housing 2. The convex strips 12 and the strip-shaped grooves 13 match in shape and are corresponding in position, and the two together form a fitting structure. The insulating semi-circular housing 1 is connected to the insulating rectangular housing 2 through this fitting structure.

[0036] A first opening for ventilation is provided on the side wall of the arc-shaped side of the insulating semi-circular housing 1 (i.e., the side close to the insulating rectangular housing 2). The first opening is located at the central position of this side wall. A second opening for ventilation is provided on the side wall of the groove end of the insulating rectangular housing 2. The second opening is located at the central position of the side wall of the groove end. The first opening and the second opening are the same in size and corresponding in position. After the insulating semi-circular housing 1 and the insulating rectangular housing 2 are connected in cooperation, the first opening and the second opening are docked with each other, and the electrostatic collection module 100 and the dust sweeping module 200 are communicated through their respective openings.

[0037] A third opening is provided on the side of the insulating rectangular housing 2 away from the insulating semi-circular housing 1, and the third opening is used to extend the palm when collecting dust.

[0038] The electrostatic collection module 100 further includes an electrode 9, a dust collection film 10, and an air extraction nozzle 11. Among them, the electrode 9 and the dust collection film 10 are arranged inside the insulating semi-circular housing 1, and the air extraction nozzle 11 is arranged on the side wall outside the insulating semi-circular housing 1.

[0039] The electrode 9 is divided into a negative plate (discharge electrode) and a positive plate (collection electrode). The negative plate is arranged at the upper end inside the insulating semi-circular housing 1, and the positive plate is arranged at the lower end inside the insulating semi-circular housing 1; among them, the negative plate is of a semi-circular structure, which matches the shape of the upper end surface inside the insulating semi-circular housing 1, and the positive plate is of a semi-circular structure, which matches the shape of the lower end surface inside the insulating semi-circular housing 1.

[0040] The electrode 9 is electrically connected to an external high-voltage generator and is used to form an electrostatic field under the action of the external high-voltage generator.

[0041] The dust collection film 10 is arranged on one side of the positive plate close to the negative plate and is used to collect dust; among them, the dust collection film 10 is of a semi-circular structure, which matches the shape of the upper surface of the negative plate.

[0042] It should be noted that when the device is in use, due to the action of the high-voltage generator, an electrostatic field will be formed inside the insulating semi-circular housing 11. The negative plate generates corona discharge, causing the dust in the air to carry negative charges. The dust with negative charges moves towards the positive plate under the action of the electric field force and deposits on the dust collection film 10.

[0043] The air extraction nozzle 11 is arranged on the side wall of one side of the section of the insulating semi-circular housing 1 (i.e., the side far from the dust sweeping module 200), and the air extraction nozzle 11 is located at the central position of this side wall. The air extraction nozzle 11 is connected to an external air extraction pump and is used to extract the gas inside the device, so that the dust in the internal cavity of the dust sweeping module 200 moves to the electrostatic collection module 100 along with the air flow to complete the dust collection.

[0044] The dust sweeping module 200 further includes a rotating shaft 3, an antistatic soft brush 4, and a driving component. The rotating shaft 3, the antistatic soft brush 4, and the driving component are arranged inside the insulating rectangular housing 2.

[0045] The rotating shaft 3 is horizontally arranged in the middle area inside the insulating rectangular housing 2. The rotating shaft 3 is divided into two groups, and the two groups of rotating shafts 3 are symmetrically arranged on the upper and lower sides of this middle area. A space for placing the palm is left between the two groups of rotating shafts 3 when collecting dust; among them, each group includes two rotating shafts 3, and these two rotating shafts 3 are at the same height in the vertical direction.

[0046] In this embodiment, the direction in which the hand extends is taken as the longitudinal direction, and the direction perpendicular to this direction is taken as the transverse direction. Therefore, the long axis direction of the above-mentioned rotating shaft 3 is the transverse direction.

[0047] Four sets of antistatic soft brushes 4 are sleeved on the rotating shaft 3, and the antistatic soft brush 4 is fixedly connected to the rotating shaft 3, and there is no relative movement between the two. The antistatic soft brush 4 is used to sweep off the dust on the hand; wherein, the number of the antistatic soft brushes 4 is the same as the number of the rotating shafts 3, and each rotating shaft 3 is sleeved with an antistatic soft brush 4.

[0048] The driving assembly is arranged on one side inside the insulating rectangular housing 2 and is used to drive the overall structure formed by the rotating shaft 3 and the antistatic soft brush 4 to rotate so as to sweep off the dust on the hand.

[0049] The driving assembly includes a rotating device 5, a gear 6 and a chain 8.

[0050] The rotating device 5 is in transmission connection with the chain 8, the chain 8 is in transmission connection with the gear 6, and the rotating shaft 3 is fixedly connected to the gear 6. The rotating device 5 is used to drive the rotating shaft 3 to rotate through the transmission between the chain 8 and the gear 6; wherein, the number of the gears 6 is the same as the number of the rotating shafts 3, the gears 6 are connected to the rotating shafts 3 in a one-to-one correspondence, and each gear 6 is in transmission connection with the chain 8.

[0051] In this embodiment, the rotating device 5 can adopt a motor. During installation, the chain 8 is connected to the output shaft of the motor through a sprocket. After the motor is started, the output shaft of the motor rotates and drives the rotating shaft 3 to rotate through the chain 8 and the gear 6.

[0052] The dust sweeping module 200 further includes a fixing frame 7. The fixing frame 7 is installed inside the insulating rectangular housing 2 and is used to limit the rotating shaft 3.

[0053] The fixing frame 7 is divided into two groups, with four in each group. The two groups of fixing frames 7 are respectively arranged on both sides of the rotating shaft 3, and the position of the fixing frame 7 corresponds to the position of the end of the rotating shaft 3. The two ends of the rotating shaft 3 are respectively installed on the fixing frames 7 on both sides.

[0054] An arc-shaped card slot is arranged on the fixing frame 7, and cylindrical protrusions are respectively arranged at both ends of the rotating shaft 3. The diameter of the cylindrical protrusion is smaller than the width of the arc-shaped card slot. The cylindrical protrusion is arranged in the arc-shaped card slot, and there is a gap between the cylindrical protrusion and the arc-shaped card slot. The cylindrical protrusion can rotate freely in the arc-shaped card slot; wherein, the fixing frame 7 on the side close to the driving assembly is located between the gear 6 and the antistatic soft brush 4.

[0055] The rotating device 5, the gear 6, the fixing frame 7, the rotating device 5, the gear 6, the fixing frame 7 and the chain 8 are all arranged inside the insulating rectangular housing 2.

[0056] This application also provides a usage method of a hand dust collection device, which includes:

[0057] Assemble the electrostatic collection module 100 and the dust sweeping module 200 respectively according to the above connection relationship. After completion of the assembly, align the convex strips 12 on both sides of the electrostatic collection module 100 with the strip grooves 13 on both sides of the groove end of the dust sweeping module 200 from above, and install the electrostatic collection module 100 at the groove end of the dust sweeping module 200 along the strip grooves 13 (i.e., connect the assembled electrostatic collection module 100 and the dust sweeping module 200 through the fitting structure); connect the electrode 9 to an external high-voltage generator, and connect the air extraction nozzle 11 to an external air extraction pump.

[0058] Start sampling. Insert the hands of the personnel to be sampled in this batch into the insulating rectangular housing 2 in sequence from the third opening, and place them between the two sets of rotating shafts 3, so that the palm and the back of the hand are respectively in contact with the antistatic soft brush 4. Among them, since the hand dust collection device in this application can realize continuous sampling of multiple people, a batch includes multiple personnel to be sampled. Start the rotating device 5, the high-voltage generator and the air extraction pump. The rotating device 5 drives the gear 6 to rotate through the chain 8, the gear 6 drives the shaft 3 to rotate, the antistatic soft brush 4 sweeps off the dust on the palm and the back of the hand, the air extraction pump extracts air outward through the air extraction nozzle 11 on the dust sweeping module 200, so as to form an air flow in the device, and the air in the insulating rectangular housing 2 enters the insulating semi-circular housing 1 through the butted first opening and second opening. Under the action of the high-voltage generator, the electrode 9 forms an electric field inside the insulating semi-circular housing 1. The dust in the air inside the insulating rectangular housing 2 enters the insulating semi-circular housing 1 along with the air flow. The negative plate of the electrode 9 generates corona discharge, so that the dust in the air is charged negatively. The negatively charged dust moves towards the positive plate under the action of the electric field force and deposits on the dust collection film 10.

[0059] After completing the hand dust collection in a single batch, turn off the rotating device 5, the high-voltage generator and the air extraction pump, separate the electrostatic collection module 100 and the dust sweeping module 200 through the fitting structure, take out the dust collection film 10 from the first opening of the insulating semi-circular housing 1, and replace it with a new dust collection film 10. Connect the electrostatic collection module 100 and the dust sweeping module 200 to conduct the next batch of collection. After all the collections are completed, end the sampling.

[0060] In the present invention, terms such as "installation", "connection", "connection", "fixation" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "connection" can be a direct connection or an indirect connection through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] The shapes of the various components in the drawings are all schematic, and there is no exclusion of a certain difference from their real shapes. The drawings are only used to illustrate the principle of the present invention and are not intended to limit the present invention.

[0062] Although the present invention has been disclosed in detail with reference to the accompanying drawings, it should be understood that these descriptions are merely exemplary and are not intended to limit the application of the present invention. The scope of protection of the present invention is defined by the appended claims and may include various modifications, adaptations, and equivalent solutions made to the invention without departing from the scope and spirit of the present invention.

Claims

1. A hand dust collection device, characterized in that: The hand dust collection device is composed of an electrostatic collection module (100) and a dust sweeping module (200); The exterior of the static electricity collection module (100) is provided as an insulating semicircular shell (1), and the exterior of the dust sweeping module (200) is provided as an insulating rectangular shell (2); the insulating semicircular shell (1) is tightly connected to one side of the insulating rectangular shell (2); a hand entrance is provided on the other side of the insulating rectangular shell (2); and the insulating semicircular shell (1) and the insulating rectangular shell (2) are in communication with each other through an opening provided at the connection; Electrodes (9) are arranged at the upper and lower ends of the interior of the insulating semicircular shell (1), and the electrodes (9) are used to form an electrostatic field. A dust collecting film (10) is arranged on the electrode (9), and the dust collecting film (10) is used to collect dust. An air suction nozzle (11) is arranged on the outer side wall of the insulating semicircular shell (1), and the air suction nozzle (11) is used to evacuate air from the device. A rotating shaft (3) is transversely arranged in the middle area of ​​the insulating rectangular shell (2), and the rotating shaft (3) is divided into two groups. The two groups of rotating shafts (3) are symmetrically arranged on the upper and lower sides of the middle area, and a space for placing a palm is reserved between the two groups of rotating shafts (3); an antistatic soft brush (4) is arranged on the rotating shaft (3), and the antistatic soft brush (4) is used to sweep away dust on the hands; a driving component is also arranged in the insulating rectangular shell (2), and the driving component is used to drive the rotating shaft (3) to rotate.

2. The hand dust collecting device according to claim 1, characterized in that: An arc-shaped groove is provided on one side of the insulating semicircular shell (1) close to the insulating rectangular shell (2), the arc-shaped groove matches the shape of one side of the arc surface of the insulating semicircular shell (1), and one side of the arc surface of the insulating semicircular shell (1) is arranged in the arc-shaped groove and is tightly connected to the insulating rectangular shell (2).

3. The hand dust collecting device according to claim 1, characterized in that: The electrode (9) is divided into a negative electrode plate and a positive electrode plate. The negative electrode plate is arranged at the upper end of the interior of the insulating semicircular shell (1), and the negative electrode plate matches the shape of the upper surface of the interior of the insulating semicircular shell (1). The positive electrode plate is arranged at the lower end of the interior of the insulating semicircular shell (1), and the positive electrode plate matches the shape of the lower surface of the interior of the insulating semicircular shell (1).

4. The hand dust collecting device according to claim 3, characterized in that: The dust collecting film (10) is arranged on a side of the positive electrode plate close to the negative electrode plate, and the electrode (9) is electrically connected to an external high voltage generator.

5. The hand dust collecting device according to claim 1, characterized in that: The driving assembly is located on one side of the insulating rectangular housing (2), and comprises a rotating device (5), a gear (6) and a chain (8); The rotating device (5) is transmission-connected to the chain (8), the chain (8) is transmission-connected to the gear (6), the rotating shaft (3) is fixedly connected to the gear (6), and the rotating device (5) is used to drive the rotating shaft (3) to rotate through the transmission of the chain (8) and the gear (6).

6. The hand dust collecting device according to claim 5, characterized in that: A fixing frame (7) is also arranged inside the insulating rectangular shell (2), and the fixing frame (7) is used to limit the position of the rotating shaft (3); The fixing frames (7) are divided into two groups. The two groups of fixing frames (7) are respectively arranged on both sides of the rotating shaft (3). The two ends of the rotating shaft (3) are respectively mounted on the fixing frames (7) at corresponding positions on both sides.

7. The hand dust collecting device according to claim 6, characterized in that: A slot is provided on the fixing frame (7), and protrusions are provided at both ends of the rotating shaft (3), the protrusions are arranged in the slot, and a gap is left between the protrusions and the slot. The fixing frame (7) close to the driving component side is located between the gear (6) and the antistatic soft brush (4).

8. The hand dust collecting device according to claim 2, characterized in that: A first opening is provided on the side wall of the arc surface of the insulating semicircular shell (1), and a second opening is provided at a corresponding position on the side wall of the groove end of the insulating rectangular shell (2). The insulating semicircular shell (1) and the insulating rectangular shell (2) are connected via two butted openings.

9. The hand dust collecting device according to claim 2, characterized in that: Strip grooves (13) are respectively arranged on both sides of the groove end of the insulating rectangular shell (2), and convex strips (12) are respectively arranged at positions corresponding to the strip grooves (13) on both sides of the insulating semicircular shell (1), and the convex strips (12) and the strip grooves (13) form a chimeric structure, and the insulating semicircular shell (1) is connected to the insulating rectangular shell (2) through the chimeric structure.

10. The hand dust collecting device according to claim 1, characterized in that: The air suction nozzle (11) is arranged on a side wall on one side of the cut surface of the insulating semicircular shell (1), and the air suction nozzle (11) is connected to an external air suction pump.

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