Object surface impurity removing device

Abstract

The utility model provides an object surface impurity removing device, relates to the technical field of cleaning equipment, and solves the technical problems of low efficiency and time and labor waste when the surface of a product is cleaned manually. The object surface impurity removing device comprises a rack; the conveying assembly is mounted on the rack and used for conveying the to-be-treated products; the dust removal assembly is installed on the rack, located above the conveying assembly and used for removing impurities on the surfaces of the passing products to be treated; the protective cover assembly is installed on the machine frame, and at least part of the dust removal assembly and at least part of the conveying assembly are covered with the protective cover assembly. The cleaning device can be installed at the rear section and the front section of a production assembly equipment line body and used for cleaning the surfaces of objects before packaging, and cleaning is simpler and more thorough through the design of polygon and automatic blowing; and for some dust conditions, manual work can be replaced, so that occupational diseases are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a device for removing impurities from the surface of an object. Background Art

[0002] With the rapid advancement of modern automation, all links of industrial product manufacturing, production, packaging, etc. are gradually moving towards automation. For example, the degree of automation in the production process of loading, unloading, packaging and testing has been greatly improved. When the degree of automation is improved, it also effectively reduces human resources and saves production costs.

[0003] The applicant has found that the prior art has at least the following technical problems: in some production environments or production processes, dust or powdery materials may appear. In order to prevent the dust or powdery materials from sticking to the products, the surface of the processed or produced products needs to be cleaned.

[0004] When removing impurities from existing products that require surface cleanliness, the surface is cleaned manually using auxiliary materials, which is not only time-consuming and labor-intensive, but also wastes auxiliary materials and is inefficient, resulting in unsatisfactory cleaning effects. Utility Model Content

[0005] The utility model aims to provide a device for removing impurities from the surface of an object, so as to solve the technical problems existing in the prior art of manually cleaning the surface of a product, which is low in efficiency, time-consuming and labor-intensive.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a device for removing impurities from the surface of an object, comprising:

[0008] frame;

[0009] A conveying assembly, mounted on the frame, for conveying the product to be processed;

[0010] The dust removal assembly is installed on the frame and located above the conveying assembly, and is used to remove surface impurities of the passing products to be processed.

[0011] Furthermore, it also includes a shield assembly, which is installed on the frame and covers at least part of the dust removal assembly and the transmission assembly.

[0012] Furthermore, the rack includes:

[0013] The frame is a cubic frame structure;

[0014] An upper platform, fixed to the upper part of the frame;

[0015] A lower platform fixed to the bottom of the frame;

[0016] A panel is arranged around the frame;

[0017] The casters and supporting feet are all fixed on the bottom of the frame.

[0018] Furthermore, the height of the enclosure is equal to the distance between the top of the frame and the upper platform.

[0019] Furthermore, the transmission component includes:

[0020] Conveying support plates are arranged relatively on both sides of the top of the frame;

[0021] The conveying rollers are evenly arranged side by side, and both ends are rotatably connected to the conveying support plates on both sides.

[0022] Furthermore, the dust removal component comprises:

[0023] An air intake device, installed between the upper platform and the lower platform, for providing purge air;

[0024] A polygonal blowing device is installed on the upper platform and connected to the air inlet device to use the purge gas to blow the passing product to be processed to remove impurities.

[0025] Furthermore, the air intake device comprises:

[0026] A blower, mounted on the lower platform;

[0027] An air outlet channel is provided on the upper platform and connected to the polygonal air blowing device;

[0028] An air supply pipeline has one end connected to the air outlet of the blower and the other end connected to the air outlet channel.

[0029] Furthermore, the polygonal blowing device comprises:

[0030] The polygonal air blowing duct is a polygonal ring structure with a channel for air flow inside;

[0031] There are several air nozzles, which are arranged in a ring shape along the inner wall of the polygonal air blowing pipe;

[0032] A switch knob is installed between the air nozzle and the polygonal air blowing pipe to control the switch of the air nozzle;

[0033] An inlet is arranged at the bottom of the polygonal air blowing duct and is used for communication with the air intake device.

[0034] Furthermore, there is at least one polygonal blowing device, which is arranged side by side along the conveying direction of the conveying assembly.

[0035] Furthermore, the shield assembly comprises:

[0036] There are two shield mounting plates, which are symmetrically mounted on the top of the rack;

[0037] A ventilation inlet hole is provided on one of the shield mounting plates and is connected to an air source for blowing air into the shield assembly;

[0038] A vent hole is provided on another shield mounting plate and is used to discharge the gas inside the shield assembly;

[0039] The number of the lower shields is four, which are symmetrically arranged on the inner side of the two shield mounting plates, and a gap is left in the middle for the product to be processed to pass through;

[0040] The upper shield is a cover structure, fixed to the shield mounting plate and the top of the lower shield, and is provided with a notch corresponding to the notch position for the product to be processed to pass through.

[0041] The object surface impurity removal device provided by the utility model is composed of a frame, a transmission component and an air intake device, a shield component and a plurality of polygonal blowing devices, etc. It can be installed at the rear section of a production assembly line and the front section of packaging, and is used for cleaning the surface of objects before packaging. The polygonal and automatic blowing design makes cleaning simpler and more thorough. For some dusty situations, it can also replace manual labor to prevent the occurrence of occupational diseases. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0043] Figure 1 It is a structural schematic diagram of the device for removing impurities from the surface of an object of the utility model;

[0044] Figure 2 It is a structural schematic diagram of the object surface impurity removal device of the utility model with the shield assembly and the polygonal blowing device removed;

[0045] Figure 3 It is a structural schematic diagram of the object surface impurity removal device of the utility model, viewed from the bottom upward after the shield assembly and the polygonal blowing device are removed;

[0046] Figure 4 It is a structural schematic diagram of a shield assembly in the device for removing impurities from the surface of an object of the utility model;

[0047] Figure 5 It is a structural schematic diagram of a polygonal air blowing device in the object surface impurity removal device of the utility model;

[0048] Figure 6 The utility model is a structural schematic diagram of the object surface impurity removal device with the shield assembly removed.

[0049] In the figure, 1, frame; 11, frame; 12, upper platform; 13, lower platform; 14, enclosure; 15, casters; 16, supporting feet; 2, conveying assembly; 21, conveying support plate; 22, conveying roller; 3, dust removal assembly; 31, air intake device; 311, blower; 312, air inlet; 313, air outlet; 314, air outlet channel; 315, air supply duct; 316, connecting flange; 32, polygonal blowing device; 321, polygonal blowing duct; 322, air nozzle; 323, switch knob; 324, inlet; 4, shield assembly; 41, shield mounting plate; 42, ventilation inlet hole; 43, ventilation outlet hole; 44, lower shield; 45, upper shield; 46, notch; 47, recess; 100, product to be processed. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0051] Embodiment 1:

[0052] like Figure 1 As shown, the utility model provides a device for removing impurities from the surface of an object, comprising:

[0053] Frame 1, used for carrying various components of the impurity removal device;

[0054] The conveying assembly 2 is installed on the frame 1 and is used to realize the conveying of the product to be processed. The conveying assembly 2 can continue to convey the product to be processed from the processing line, and can also be used to manually put the product directly into the conveying assembly 2 for conveying. Of course, the conveying distance is limited to the length of the conveying assembly 2 in the utility model, specifically, the maximum length of the frame 1;

[0055] The dust removal assembly 3 is installed on the frame 1 and is located above the conveying assembly 2, and is used to remove surface impurities of the passing product 100 to be processed.

[0056] It should be noted that the shapes of the product to be processed are varied. The following is a specific description taking the product to be processed 100 as a relatively high cylindrical product as an example.

[0057] The structure and layout of the following devices are optimally designed based on the example of processing taller cylindrical products.

[0058] like Figure 2 and Figure 3 As shown, further, in this embodiment, the frame 1 is a three-dimensional frame structure, including:

[0059] like Figure 6 As shown, the frame 11 is a cubic frame 11 structure; it includes four columns arranged in a square or rectangular shape, four lower cross beams are arranged at the bottom of the four columns, connected end to end and arranged around the four columns respectively; four middle cross beams are arranged at the middle and upper parts of the four columns, connected end to end and arranged around the four columns respectively; four upper cross beams are arranged at the tops of the four columns, connected end to end and arranged around the four columns respectively; the cross beams and the columns together form the frame 11;

[0060] The upper platform 12 is fixed to the upper part of the frame 11; specifically, the upper platform 12 is arranged at the position where the four middle beams are located, and the upper platform 12 is respectively connected to the four columns and the four middle beams to achieve the fixation of the upper platform 12; the upper platform 12 is made of a plate;

[0061] The lower platform 13 is fixed at the bottom of the frame 11; specifically, the lower platform 13 is arranged at the location of the four lower beams, and the lower platform 13 is respectively connected to the four columns and the four lower beams to achieve the fixation of the lower platform 13, and the lower platform 13 is also made of plate.

[0062] The enclosure 14 is arranged around the frame 11; specifically, the enclosure 14 is arranged between the middle cross beam and the top of the column, so as to shield the inner area of ​​the middle cross beam. Since the dust removal component 3 needs to be placed at the position of the middle cross beam, the enclosure 14 is used for shielding, which is also for the safety and reliability of the equipment operation and the cleanliness during dust removal.

[0063] The casters 15 and the support legs 16 are both fixed to the bottom of the frame 11. It should be noted that the casters 15 and the support legs 16 are both realized by using existing technical products and are purchased from the market.

[0064] In this embodiment, the upper and lower platforms and the profile frame support the entire device, and the bottom is equipped with supporting feet and casters, which can be flexibly installed and adjusted according to on-site needs.

[0065] In order to achieve good wrapping and dust prevention effects, in the present embodiment, the height of the enclosure 14 is equal to the distance between the top of the frame 11 and the upper platform 12 .

[0066] like Figure 2 As shown, further, in this embodiment, the transmission component 2 includes:

[0067] The transmission support plates 21 are relatively arranged on both sides of the top of the frame 1; specifically, the transmission support plates 21 are made of I-shaped profiles, and the free arms at the bottom are used to connect with the tops of the four columns and the four upper beams;

[0068] The conveying rollers 22 are evenly arranged side by side, and both ends are rotatably connected to the conveying support plates 21 on both sides. Figure 2 As shown, in this embodiment, there are six conveying rollers 22, which are evenly spaced, and the product 100 to be processed is conveyed from one side of the frame 1 to the other side when the conveying rollers 22 rotate. Of course, in order to make the conveying rollers 22 rotate, a driving source such as a motor connected to the conveying rollers 22 is also included.

[0069] Further, such as Figure 1 , Figure 3 and Figure 6 As shown, in this embodiment, the dust removal component 3 includes:

[0070] An air inlet device 31, installed between the upper platform 12 and the lower platform 13, for providing purge gas;

[0071] The polygonal blowing device 32 is installed on the upper platform 12 and connected to the air inlet device 31 to use the purge gas to blow air to remove impurities from the product to be processed. Since the product processed by the utility model has a certain height, the polygonal blowing device 32 is vertically erected and its height is greater than the product height.

[0072] like Figure 3 As shown, in this embodiment, the air intake device 31 includes:

[0073] The blower 311 is installed on the lower platform 13 to provide a stable air source for the multiple polygonal blowing devices 32; the blower 311 is a product purchased from the market; Figure 2 As shown, the blower 311 has an air inlet 312 and an air outlet 313, the air inlet 312 is used to provide air to the blower 311, and the air outlet 313 is used to blow out the air from the blower 311;

[0074] The air outlet channel 314 is provided on the upper platform 12 and connected to the polygonal air blowing device 32; the air outlet channel 314 is used to convey the air blown by the blower 311 to the polygonal air blowing device 32 to remove dust from the surface of the product;

[0075] The air supply pipe 315 has one end connected to the air outlet 313 of the blower 311 , and the other end connected to the air outlet channel 314 .

[0076] In this embodiment, the air outlet channel 314 is rectangular, and the air supply pipe 315 is a circular tube. Figure 3 As shown, a connecting flange 316 is provided at the bottom of the air outlet channel 314 , and one end of the connecting flange 316 is a square opening and the other end is a round opening, so as to facilitate the perfect connection between the air supply pipe 315 and the air outlet channel 314 .

[0077] like Figure 5 As shown, further, the polygonal blowing device 32 includes:

[0078] The polygonal blowing pipe 321 is a polygonal ring structure, and has a channel for air flow inside; specifically, Figure 5 As shown, in this embodiment, the polygonal blowing pipe 321 is an octagonal structure and is made of a square tube; the internal channels of the polygonal blowing pipe 321 are connected; a widened portion is provided at the bottom of the polygonal blowing pipe 321 to facilitate the vertical arrangement of the polygonal blowing pipe 321. The reason why an octagonal ring-shaped blowing pipe is used is that the processed product can pass through the middle of the polygonal blowing pipe 321, and during the passing process, the air nozzles 322 around the polygonal blowing pipe 321 can be used to blow air around the product;

[0079] There are several air nozzles 322, which are arranged in a ring shape along the inner wall of the polygonal air blowing pipe 321, and can be installed in multiple groups in parallel according to actual needs; specifically, in this embodiment, Figure 5 As shown, there are 12 air nozzles 322, four on each side, three on the bottom, and one on the top. This structural setting is also to take into account the different areas required for cleaning and blowing at different positions of the product. The circumferential area of ​​the left and right sides is the largest, so the largest number of air nozzles 322 are arranged; while the top area is the smallest, so only one air nozzle 322 is arranged. Moreover, the distances between the air nozzles 322 on each side are not equal, which is also to take into account the maximum efficiency of cleaning and blowing the product. For areas that are difficult to clean, the air nozzles 322 are arranged with a large density and a large number, so as to achieve the best cleaning effect.

[0080] The switch knob 323 is installed between the air nozzle 322 and the polygonal blowing pipe 321 to control the switch of the air nozzle 322; specifically, the switch knob 323 can be an electrically controlled switch knob 323, or a manual switch knob 323. The specific form can be selected and set according to needs, but no matter which form of the switch knob 323 is adopted, it is realized by using existing technology products and purchased from the market.

[0081] The inlet 324 is disposed at the bottom of the polygonal air blowing duct 321 and is used for communication with the air intake device 31 .

[0082] Specifically, in this embodiment, if Figure 5 As shown, a square connecting plate is provided at the widened bottom portion of the polygonal blowing pipe 321, and a square inlet 324 is opened in the middle of the square connecting plate. The square connecting plate is connected to the upper platform 12 by screws, and when the square connecting plate is connected to the upper platform 12, its inlet 324 is opposite to the air outlet channel 314, and the specifications of the inlet 324 can be the same as those of the air outlet channel 314, and the shape is also the same, so as to achieve a good transfer effect.

[0083] Through the above structural setting, automatic blowing is realized, and the polygonal design can make the surface cleaning of product objects simpler and more thorough.

[0084] In order to further improve the impurity removal effect, in this embodiment, Figure 6 As shown, there is at least one polygonal blowing device 32 , which is arranged side by side along the conveying direction of the conveying component 2 .

[0085] Specifically, Figure 6 As shown, in the present embodiment, there are three sets of polygonal blowing devices 32. For a good fit, three air outlet channels 314 are provided on the upper platform 12, and the three air outlet channels 314 are arranged between two adjacent conveying rollers 22. Through this structural setting, when the polygonal blowing device 32 is installed on the upper platform 12 and connected with the air outlet channels 314, it will not interfere with the conveying roller 22. Therefore, the thickness of the polygonal blowing device 32 should be smaller than the distance between two adjacent conveying rollers 22.

[0086] In order to save costs, in this embodiment, Figure 3 As shown, although there are three air outlet channels 314 , there is only one connecting flange 316 , and the square end area of ​​the connecting flange 316 is large enough to cover the three air outlet channels 314 and supply air to the three air outlet channels 314 at the same time.

[0087] Based on the above structure, for the safety of equipment and products, such as Figure 1 As shown, it also includes a shield assembly 4, which is installed on the frame 1 and covers at least part of the dust removal assembly 3 and the conveying assembly 2. Through the above structural setting, the product and the dust removal assembly 3 can be covered inside, which improves the safety of the equipment and the dust removal safety, and also makes the device more beautiful. It should be noted here that Figure 1 A lower shield 44 is removed to facilitate observation of the internal structure, and the complete shield assembly 4 is as follows: Figure 4 shown.

[0088] Further, such as Figure 4 As shown, the shield assembly 4 includes:

[0089] The shield mounting plates 41 are two in number and are symmetrically mounted on the top of the frame 1; specifically, the shield mounting plates 41 are made of flat plates, and an outer edge is provided on the top of the shield mounting plates 41 to facilitate connection with other components; Figure 1 As shown, the shield mounting plate 41 is fixed to the enclosure plate 14 by screws;

[0090] A ventilation inlet hole 42 is provided on one of the shield mounting plates 41 and is connected to an air source for blowing air into the shield assembly 4;

[0091] The vent hole 43 is provided on another shield mounting plate 41 and is used to discharge the gas inside the shield assembly 4; wherein the vent hole 42 and the vent hole 43 are arranged opposite to each other;

[0092] There are four lower guards 44, which are symmetrically arranged on the inner side of the two guard mounting plates 41, with a gap 46 in the middle for the products to be processed to pass through; the top of the lower guard 44 also has an outer edge for connecting with the upper guard 45; the height of the lower guard 44 is less than the height of the guard mounting plate 41, so that when the guard mounting plate 41 is connected to the enclosure 14, the bottom of the lower guard 44 will not interfere with the conveying assembly 2.

[0093] The upper shield 45 is fixed to the shield mounting plate 41 and the top of the lower shield 44 , and is provided with a notch 47 corresponding to the position of the notch 46 for the product to be processed to pass through.

[0094] The object surface impurity removal device provided by the utility model is composed of a frame 1, a conveying component 2 and an air intake device 31, a shield component 4 and a plurality of polygonal blowing devices 32, etc., and can be installed at the rear section and the front section of the packaging of a production assembly equipment line, and is used for cleaning the surface of objects before packaging. The polygonal and automatic blowing design makes cleaning simpler and more thorough; for some dusty situations, it can also replace manual labor to prevent the occurrence of occupational diseases.

[0095] Movement principle:

[0096] like Figure 1-Figure 6 As shown, after the object surface impurity removal device is connected to the wire body, the impurity-removed product will enter the conveying roller 22 of the object surface impurity removal device along with the transmission of the wire body. After reaching the designated position, the conveying roller 22 stops rotating. At the same time, the blower 311 starts to supply air to the entire device. At the same time, the ventilation air inlet 42 is connected to an external air source for regular air intake, and the floating waste gas is discharged in a fixed direction until the blowing process is completed, the blower 311 stops moving, and the conveying roller 22 sends the material out of the device.

[0097] The shield assembly 4 can isolate the dust on the surface of the object that is blown up in the device, and the ventilation inlet 42 can be connected to an external air source to intake air and direct the floating dust in the shield assembly to be discharged from the ventilation outlet 43;

[0098] The polygonal blowing device 32 can remove impurities from the object. The switch knob can open and close the air nozzle 322 according to the needs of the material. The inverted cone design of the air nozzle 322 is more conducive to concentrating the gas and removing stubborn impurities.

[0099] First of all, it should be explained here that “inward” refers to the direction toward the center of the accommodating space, and “outward” refers to the direction away from the center of the accommodating space.

[0100] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0101] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0102] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0103] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0104] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0105] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A device for removing impurities from the surface of an object, It is characterized in that include: frame; A conveying assembly, mounted on the frame, for conveying the product to be processed; The dust removal component is installed on the frame and located above the conveying component, and is used to remove surface impurities of the products to be processed passing through.

2. The device for removing impurities from the surface of an object according to claim 1, It is characterized in that It also includes a shield assembly, which is installed on the frame and covers at least part of the dust removal assembly and the transmission assembly.

3. The device for removing impurities from the surface of an object according to claim 1, It is characterized in that The frame comprises: The frame is a cubic frame structure; An upper platform, fixed to the upper part of the frame; A lower platform fixed to the bottom of the frame; A panel is arranged around the frame; The casters and supporting feet are all fixed on the bottom of the frame.

4. The device for removing impurities from the surface of an object according to claim 3, It is characterized in that The height of the enclosure is equal to the distance between the top of the frame and the upper platform.

5. The device for removing impurities from the surface of an object according to claim 1, It is characterized in that The transmission component comprises: Conveying support plates are arranged relatively on both sides of the top of the frame; The conveying rollers are evenly arranged side by side, and both ends are rotatably connected to the conveying support plates on both sides.

6. The device for removing impurities from the surface of an object according to claim 3, It is characterized in that The dust removal component comprises: An air intake device, installed between the upper platform and the lower platform, for providing purge air; A polygonal blowing device is installed on the upper platform and connected to the air inlet device to use the purge gas to blow the passing product to be processed to remove impurities.

7. The device for removing impurities from the surface of an object according to claim 6, It is characterized in that The air intake device comprises: A blower, mounted on the lower platform; An air outlet channel is provided on the upper platform and connected to the polygonal air blowing device; An air supply pipeline has one end connected to the air outlet of the blower and the other end connected to the air outlet channel.

8. The device for removing impurities from the surface of an object according to claim 6, It is characterized in that The polygonal blowing device comprises: The polygonal air blowing duct is a polygonal ring structure with a channel for air flow inside; There are several air nozzles, which are arranged in a ring shape along the inner wall of the polygonal air blowing pipe; A switch knob is installed between the air nozzle and the polygonal air blowing pipe to control the switch of the air nozzle; An inlet is arranged at the bottom of the polygonal air blowing duct and is used for communication with the air intake device.

9. The device for removing impurities from the surface of an object according to claim 6, It is characterized in that The number of the polygonal blowing device is at least one, and they are arranged side by side along the conveying direction of the conveying assembly.

10. The device for removing impurities from the surface of an object according to claim 2, It is characterized in that The shield assembly comprises: There are two shield mounting plates, which are symmetrically mounted on the top of the rack; A ventilation inlet hole is provided on one of the shield mounting plates and is connected to an air source for blowing air into the shield assembly; A vent hole is provided on another shield mounting plate and is used to discharge the gas inside the shield assembly; The number of the lower shields is four, which are symmetrically arranged on the inner side of the two shield mounting plates, and a gap is left in the middle for the product to be processed to pass through; The upper shield is fixed on the shield mounting plate and the top of the lower shield, and is provided with a notch corresponding to the notch position for the product to be processed to pass through.

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