Continuous dry and wet combined dust collection and conveying device

Abstract

The utility model belongs to the field of dust removal technology, and in particular, relates to a continuous dry-wet combined dust removal and transportation device. The utility model includes a feeding platform, a middle conveying platform and a terminal conveying platform arranged in sequence. The utility model can perform preliminary dry dust removal on the workpiece through a dry anti-dust cyclone dust suction mechanism, and adopts a dry cyclone dust removal combined with a dust suction hood structure to remove dust and impurities on the surface of the workpiece, and can prevent dust from leaking from both sides of the middle conveying platform to cause dust, reduce the dust content of the workshop air, improve the working environment, and reduce harm to the human body. When the workpiece is transported to the terminal conveying platform by the conveyor belt of the middle conveying platform, the workpiece can be subjected to secondary wet dust removal through a wet multi-cylinder dust suction mechanism, and a spray and dust suction structure is adopted to perform secondary dust removal on the workpiece, further improving the dust removal effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of dust removal equipment and relates to a continuous dry-wet combined dust removal and transportation device. Background Art

[0002] After rod and shaft workpieces have been piled up in the warehouse for a long time, a lot of dust and impurities will adhere to the surface. Before leaving the factory, rod and shaft workpieces need to be dusted. The existing dust removal and transportation structure generally adopts a single dry dust removal during dust removal. On the one hand, this method is prone to dust during dust removal, causing pollution to the workshop environment. On the other hand, it is difficult to ensure the effective removal of dust and impurities on the surface of the workpiece. The dust removal effect is relatively general, and after a long period of dust removal, manual sludge treatment is required, which has a high labor intensity. Therefore, it is urgent to design a continuous dry-wet combined dust removal and transportation device that can overcome the above defects.

[0003] In order to overcome the shortcomings of the prior art, people have proposed various solutions through continuous exploration. For example, a Chinese patent discloses a dust removal device for transportation equipment [application number: 201811585986.8], which includes a base assembly and a dust removal assembly. The base assembly includes a base and a shockproof layer. The shockproof layer is located on the lower surface of the base and is fixedly connected to the base. The dust removal assembly includes a shell, an air inlet, an air outlet, a first filter, a fan, a second filter and an activated carbon filter. Summary of the invention

[0004] The purpose of the utility model is to provide a continuous dry-wet combined dust removal and transportation device in view of the above-mentioned problems. The technical problem to be solved by the utility model is how to avoid dust generation when dusting rod and shaft workpieces, effectively and comprehensively remove dust and impurities on the surface of rod and shaft workpieces, and eliminate the need for manual cleaning of sludge, thereby achieving the requirement of reducing manual labor intensity.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A continuous dry-wet combined dust removal and transportation device comprises a feeding platform, a middle conveying platform and a terminal conveying platform arranged in sequence, wherein the feeding platform and the terminal conveying platform are respectively provided with a material picking arm and a loading arm which can reciprocate linearly in the vertical direction, and above the middle conveying platform and the terminal conveying platform are respectively provided with a dry dust-proof cyclone dust suction mechanism and a wet multi-cylinder dust suction mechanism, the dry dust-proof cyclone dust suction mechanism and the wet multi-cylinder dust suction mechanism are connected with each other through a connecting pipe, a chain conveying structure is installed on the terminal conveying platform, and a rake claw structure for scraping sludge between the chain conveying structure and the terminal conveying platform is provided at the outlet of the terminal conveying platform.

[0007] In the above-mentioned continuous dry-wet combined dust removal and transportation device, the dry anti-dust cyclone dust suction mechanism includes a cyclone dust collector and two dust hoods arranged above the middle-end conveying platform. The two dust hoods are respectively located on both sides of the cyclone dust collector and the dust hoods are connected to the cyclone dust collector through a pipeline.

[0008] In the above-mentioned continuous dry-wet combined dust removal and transportation device, one dust hood is located above the entrance of the middle-end conveying platform, and the other dust hood is located above the exit of the middle-end conveying platform.

[0009] In the above-mentioned continuous dry-wet combined dust removal and transportation device, a material limiting pressure frame is provided between the cyclone dust collector and the middle-end conveying platform, and a plurality of rotatable rollers are provided at the bottom of the material limiting pressure frame, forming an intermediate conveying channel between the rollers and the middle-end conveying platform.

[0010] In the above-mentioned continuous dry-wet combined dust removal and transportation device, the wet multi-drum dust suction mechanism includes a spray pipeline and a double-drum cyclone dust collector arranged above the terminal conveying platform, and a spray port opening downward is provided at the bottom of the spray pipeline, and the spray port and the double-drum cyclone dust collector are staggered.

[0011] In the above-mentioned continuous dry-wet combined dust removal and transportation device, an electrically controlled fan module is provided on the left side of the double-drum cyclone dust collector, and the connecting pipe and the double-drum cyclone dust collector are respectively connected to the electrically controlled fan module through a relay multi-way pipe.

[0012] In the above-mentioned continuous dry-wet combined dust removal and transportation device, the electrically controlled fan module includes an induced draft box, a fan, a control panel and an exhaust pipe.

[0013] In the above-mentioned continuous dry-wet combined dust removal and transportation device, the rake claw structure includes a fixed frame arranged at the exit of the terminal conveying platform, and a lifting seat that can reciprocate linearly in the vertical direction is provided in the fixed frame. The right end of the lifting seat is provided with a rake claw that can reciprocate linearly in the horizontal direction, and the lifting seat and the rake claw are driven by linear drives respectively.

[0014] In the above-mentioned continuous dry-wet combined dust removal and transportation device, a bottom gap groove is formed between the chain transportation structure and the terminal conveying platform, and a sludge cylinder is installed between the fixed frame and the terminal conveying platform.

[0015] In the above-mentioned continuous dry-wet combined dust removal and transportation device, the rake claw includes a palm body and a claw body, and the claw body corresponds to the position of the bottom gap groove and is matched in shape.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] 1. Before the rod-type shaft-type workpieces in the warehouse are shipped out, the utility model first places the workpieces on the feeding platform through the material-picking arm, and then feeds the workpieces to the middle-end conveying platform through the conveyor belt of the feeding platform. When the workpieces are located in the passage between the middle-end conveying platform and the dry dust-proof cyclone dust-collecting mechanism, the dry dust-proof cyclone dust-collecting mechanism can perform preliminary dry dust removal on the workpieces. The dry cyclone dust removal is combined with the dust hood structure to remove dust and impurities on the surface of the workpieces, and dust leakage from both sides of the middle-end conveying platform can be avoided, thereby reducing the dust content of the workshop air, improving the working environment, and reducing Harm to the human body. When the workpiece is transported to the terminal conveying platform by the conveyor belt of the middle conveying platform, the workpiece can be subjected to secondary wet dust removal through the wet multi-cylinder dust suction mechanism. The spray and dust suction structure is used to carry out secondary dust removal on the workpiece, which further improves the dust removal effect. After a long period of operation, a sludge layer will be formed between the chain transport structure and the terminal conveying platform. At this time, the sludge layer can be scraped off by the rake claw structure without manual decontamination, which greatly reduces the labor intensity, ensures the normal operation of the conveying, and reduces the failure rate. Finally, the loading arm can be used to load the processed workpiece, with a high degree of automation.

[0018] 2. When the workpiece in the utility model is transported at the middle conveying platform, the roller at the bottom of the material limiting pressure frame can roll with the upper surface of the workpiece to limit the workpiece and avoid shaking of the workpiece, thereby achieving greater transportation stability.

[0019] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the utility model.

[0021] Figure 2 yes Figure 1 A magnified schematic diagram of center A.

[0022] Figure 3 yes Figure 1 A magnified schematic diagram of point B in the middle.

[0023] Figure 4 yes Figure 1 Enlarged schematic diagram of point C in the middle.

[0024] Figure 5 It is a structural diagram of the chain transport structure.

[0025] Figure 6 It is a cross-sectional schematic diagram of the rake claw.

[0026] In the figure: feeding platform 1, material taking arm 1a, middle conveying platform 2, dry dust prevention cyclone dust suction mechanism 2a, cyclone dust collector 2a1, dust hood 2a2, material limit pressure frame 2a3, roller 2a4, end conveying platform 3, loading arm 3a, wet multi-cylinder dust suction mechanism 3b, spray pipeline 3b1, double-cylinder cyclone dust collector 3b2, spray port 3b3, electric control fan module 3b4, relay multi-channel pipe 3b5, induced draft box 3b6, fan 3b7, control panel 3b8, exhaust pipe 3b9, chain transport structure 3c, bottom gap groove 30, sludge cylinder 31, connecting pipeline 4, rake claw structure 5, fixed frame 5a, lifting seat 5a1, rake claw 5a2, palm body 5a3, claw body 5a4. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings.

[0028] like Figure 1-6 As shown, a continuous dry-wet combined dust removal and transportation device comprises a feeding platform 1, a middle conveying platform 2 and a terminal conveying platform 3 arranged in sequence, wherein the feeding platform 1 and the terminal conveying platform 3 are respectively provided with a material taking arm 1a and a loading arm 3a which can reciprocate linearly in the vertical direction, and a dry dust-proof cyclone dust suction mechanism 2a and a wet multi-cylinder dust suction mechanism 3b are respectively provided above the middle conveying platform 2 and the terminal conveying platform 3, wherein the dry dust-proof cyclone dust suction mechanism 2a and the wet multi-cylinder dust suction mechanism 3b are connected with each other through a connecting pipe 4, a chain conveying structure 3c is installed on the terminal conveying platform 3, and a rake claw structure 5 for scraping sludge between the chain conveying structure 3c and the terminal conveying platform 3 is provided at the outlet of the terminal conveying platform 3.

[0029] In this embodiment, before the rod-like shaft workpieces in the warehouse are shipped out, the workpieces are first placed on the feeding platform 1 through the picking arm 1a, and the workpieces are sent to the middle-end conveying platform 2 through the conveyor belt of the feeding platform 1. When the workpiece is located in the channel between the middle-end conveying platform 2 and the dry-type anti-dust cyclone dust suction mechanism 2a, the workpiece can be preliminarily dry-dusted by the dry-type anti-dust cyclone dust suction mechanism 2a. The dry cyclone dust removal is combined with the dust hood structure to remove dust and impurities on the surface of the workpiece, and dust leakage from both sides of the middle-end conveying platform 2 can be avoided, thereby reducing the dust content of the workshop air, improving the working environment, and reducing To prevent harm to human body, when the workpiece is transported to the terminal conveying platform 3 by the conveyor belt of the middle conveying platform 2, the workpiece can be subjected to secondary wet dust removal by the wet multi-cylinder dust suction mechanism 3b, and the workpiece can be subjected to secondary dust removal by the spraying and dust suction structure, which further improves the dust removal effect. After a long period of operation, a sludge layer will be formed between the chain transport structure 3c and the terminal conveying platform 3. At this time, the sludge layer can be scraped off by the rake claw structure 5, without manual decontamination, which greatly reduces the labor intensity, ensures the normal operation of the conveying, and reduces the failure rate. Finally, the workpiece after processing can be loaded with the loading arm 3a, and the degree of automation is relatively high.

[0030] Those skilled in the art should understand that the material taking arm 1a and the material loading arm 3a are prior art, and their internal structure and working principle are not the focus of this patent, so they will not be described in detail.

[0031] Combination Figure 1 , Figure 2 As shown, the dry anti-dust cyclone dust suction mechanism 2a includes a cyclone dust collector 2a1 and two dust hoods 2a2 arranged above the middle end conveying platform 2. The two dust hoods 2a2 are respectively located on both sides of the cyclone dust collector 2a1 and the dust hoods 2a2 are connected to the cyclone dust collector 2a1 through pipelines.

[0032] Specifically, when the workpiece is located at the middle-end conveying platform 2, the dust and impurities on the surface of the workpiece are removed by the cyclone dust collector 2a1. In combination with the dust hood 2a2, dust leakage from both sides of the middle-end conveying platform 2 can be avoided to cause dust to be raised, thereby reducing the dust content in the workshop air, improving the working environment, and reducing harm to the human body. The dust hood 2a2 and the cyclone dust collector 2a1 are connected by a pipeline and adopt a connecting structure to achieve mutual communication.

[0033] Combination Figure 1 , Figure 2 As shown, one dust hood 2a2 is located above the entrance of the middle-end conveying platform 2, and another dust hood 2a2 is located above the exit of the middle-end conveying platform 2.

[0034] In this embodiment, one dust hood 2a2 is located above the entrance of the middle-end conveying platform 2, and another dust hood 2a2 is located above the exit of the middle-end conveying platform 2 to vacuum the entrance and exit of the middle-end conveying platform 2 to prevent dust from spreading at the entrance and exit.

[0035] A material limiting pressure frame 2a3 is provided between the cyclone dust collector 2a1 and the middle-end conveying platform 2 , and a plurality of rotatable rollers 2a4 are provided at the bottom of the material limiting pressure frame 2a3 , and an intermediate conveying channel is formed between the rollers 2a4 and the middle-end conveying platform 2 .

[0036] In this embodiment, when the workpiece is transported at the middle conveying platform 2, the roller 2a4 at the bottom of the material limiting pressure frame 2a3 can roll the upper surface of the workpiece to limit the workpiece and avoid shaking of the workpiece, thereby ensuring greater transportation stability.

[0037] Combination Figure 1 , Figure 3 As shown, the wet multi-drum dust suction mechanism 3b includes a spray pipeline 3b1 and a double-drum cyclone dust collector 3b2 arranged above the terminal conveying platform 3, and a spray port 3b3 opening downward is provided at the bottom of the spray pipeline 3b1, and the spray port 3b3 and the double-drum cyclone dust collector 3b2 are staggered.

[0038] In this embodiment, when the workpiece is located at the end conveying platform 3, the spray pipe 3b1 sprays water in the form of mist onto the surface of the workpiece through the spray port 3b3, and then the workpiece is wet-dusted by the double-cylinder cyclone dust collector 3b2. The secondary dust removal process is used to further improve the dust removal effect.

[0039] An electric-controlled fan module 3b4 is provided on the left side of the double-cylinder cyclone dust collector 3b2, and the connecting pipe 4 and the double-cylinder cyclone dust collector 3b2 are respectively connected to the electric-controlled fan module 3b4 through a relay multi-channel pipe 3b5.

[0040] In this embodiment, the electric-controlled fan module 3b4, the cyclone dust collector 2a1, and the double-drum cyclone dust collector 3b2 are connected in series through the relay multi-channel pipe 3b5 and the connecting pipe 4 to achieve coordinated dust removal.

[0041] The electronically controlled fan module 3b4 includes an air induced draft box 3b6, a fan 3b7, a control panel 3b8 and an exhaust pipe 3b9.

[0042] In this embodiment, the induced draft box 3b6 cooperates with the fan 3b7 to induce air, the control panel 3b8 can control the switch, power indication, operation indication and lighting control of the fan, and the exhaust pipe 3b9 is used for exhaust.

[0043] Combination Figure 1 , Figure 5 , Figure 6As shown, the rake claw structure 5 includes a fixed frame 5a arranged at the exit of the terminal conveying platform 3, and a lifting seat 5a1 capable of reciprocating linear motion in the vertical direction is provided in the fixed frame 5a, and a rake claw 5a2 capable of reciprocating linear motion in the horizontal direction is provided at the right end of the lifting seat 5a1, and the lifting seat 5a1 and the rake claw 5a2 are driven by a linear drive respectively, and a bottom gap groove 30 is formed between the chain transport structure 3c and the terminal conveying platform 3, and a sludge cylinder 31 is installed between the fixed frame 5a and the terminal conveying platform 3.

[0044] In this embodiment, after a long period of operation, a sludge layer is formed in the bottom gap groove 30. At this time, the rake claw 5a2 is extended into the bottom gap groove 30, and the sludge is scraped into the sludge barrel 31 through the rake claw 5a2. The automatic scraping structure is used to scrape the sludge layer without manual decontamination, which greatly reduces the labor intensity, ensures the normal operation of the conveying, and reduces the failure rate. The linear drive can use a cylinder, an oil cylinder or a linear motor.

[0045] Combination Figure 5 , Figure 6 As shown, the claw 5a2 includes a palm body 5a3 and a claw body 5a4, and the claw body 5a4 corresponds to the position of the bottom gap groove 30 and is matched in shape.

[0046] In this embodiment, the claw body 5a4 can ensure to extend into the bottom gap groove 30 and effectively scrape the sludge layer in the bottom gap groove 30, with good scraping effect;

[0047] The cyclone dust collector 2a1 and the double-drum cyclone dust collector 3b2 can adopt commercially available single-drum cyclone dust collectors and double-drum cyclone dust collectors, which are existing technologies.

[0048] The working principle of the utility model is:

[0049] Before the rod-like shaft-like workpieces in the warehouse are shipped out of the factory, the workpieces are first placed on the feeding platform 1 through the picking arm 1a, and the workpieces are sent to the middle-end conveying platform 2 through the conveyor belt of the feeding platform 1. When the workpiece is located at the middle-end conveying platform 2, the dust and impurities on the surface of the workpiece are removed by the cyclone dust collector 2a1. In combination with the dust hood 2a2, dust leakage from both sides of the middle-end conveying platform 2 can be avoided to cause dust, thereby reducing the dust content of the workshop air, improving the working environment, and reducing harm to the human body. The dust hood 2a2 is connected to the cyclone dust collector 2a1 through a pipeline, and a connecting structure is adopted to achieve mutual communication. A dust hood 2a2 is located on the middle-end conveying platform 2. Above the entrance of platform 2, another dust hood 2a2 is located above the exit of the middle-end conveying platform 2 to vacuum the entrance and exit of the middle-end conveying platform 2 to prevent the dust from spreading. When the workpiece is transported at the middle-end conveying platform 2, the roller 2a4 at the bottom of the material limiting pressure frame 2a3 can roll and cooperate with the upper surface of the workpiece to limit the workpiece and avoid shaking of the workpiece. The transportation stability is strong. When the workpiece is located at the terminal conveying platform 3, the spray pipeline 3b1 sprays water in the form of mist through the spray port 3b3 to the surface of the workpiece, and then the double-cylinder cyclone dust collector 3b2 performs wet dust removal on the workpiece. The secondary dust removal treatment is adopted to further improve the dust removal effect.

[0050] The electric-controlled fan module 3b4, the cyclone dust collector 2a1, and the double-tube cyclone dust collector 3b2 are connected in series through the relay multi-channel pipe 3b5 and the connecting pipe 4 to realize the linkage dust removal. The induced draft box 3b6 cooperates with the fan 3b7 to play the role of induced wind. The control panel 3b8 can control the switch, power indication, operation indication and lighting control of the fan. The exhaust pipe 3b9 is used for exhaust.

[0051] After a long period of operation, a sludge layer is formed in the bottom gap groove 30. At this time, the rake claw 5a2 is extended into the bottom gap groove 30, and the sludge is scraped into the sludge cylinder 31 by the rake claw 5a2. The automatic scraping structure is used to scrape the sludge layer without manual decontamination, which greatly reduces the labor intensity, ensures the normal operation of the conveying, and reduces the failure rate. The claw body 5a4 can ensure that it is extended into the bottom gap groove 30 and effectively scrapes the sludge layer in the bottom gap groove 30, and the scraping effect is good.

[0052] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0053] Although this article uses the terms such as feeding platform 1, feeding arm 1a, middle conveying platform 2, dry dust prevention cyclone dust suction mechanism 2a, cyclone dust collector 2a1, dust hood 2a2, material limit pressure frame 2a3, roller 2a4, end conveying platform 3, loading arm 3a, wet multi-cylinder dust suction mechanism 3b, spray pipeline 3b1, double-cylinder cyclone dust collector 3b2, spray port 3b3, electric control fan module 3b4, relay multi-channel pipe 3b5, induced draft box 3b6, fan 3b7, control panel 3b8, exhaust pipe 3b9, chain transport structure 3c, bottom gap groove 30, sludge cylinder 31, connecting pipeline 4, rake claw structure 5, fixed frame 5a, lifting seat 5a1, rake claw 5a2, palm body 5a3, claw body 5a4 etc. more frequently, it does not exclude the possibility of using other terms. These terms are used only to more conveniently describe and explain the essence of the present invention. Any additional limitations construed by them are contrary to the spirit of the present invention.

Claims

1. A continuous dry-wet combined dust removal and transportation device, comprising a feeding platform (1), a middle conveying platform (2) and a terminal conveying platform (3) arranged in sequence, characterized in that: The feeding platform (1) and the terminal conveying platform (3) are respectively provided with a material taking arm (1a) and a material loading arm (3a) capable of reciprocating linear motion in the vertical direction; a dry dust-proof cyclone dust suction mechanism (2a) and a wet multi-cylinder dust suction mechanism (3b) are respectively provided above the middle conveying platform (2) and the terminal conveying platform (3); the dry dust-proof cyclone dust suction mechanism (2a) and the wet multi-cylinder dust suction mechanism (3b) are connected via a connecting pipe (4); a chain conveying structure (3c) is installed on the terminal conveying platform (3); and a rake claw structure (5) for scraping away sludge between the chain conveying structure (3c) and the terminal conveying platform (3) is provided at the outlet of the terminal conveying platform (3).

2. The continuous dry-wet combined dust removal and transportation device according to claim 1 is characterized in that: The dry dust-proof cyclone dust suction mechanism (2a) comprises a cyclone dust collector (2a1) and two dust suction hoods (2a2) arranged above the middle-end conveying platform (2); the two dust suction hoods (2a2) are respectively located on both sides of the cyclone dust collector (2a1), and the dust suction hoods (2a2) are connected to the cyclone dust collector (2a1) through a pipeline.

3. The continuous dry-wet combined dust removal and transportation device according to claim 2 is characterized in that: One dust hood (2a2) is located above the entrance of the middle-end conveying platform (2), and the other dust hood (2a2) is located above the exit of the middle-end conveying platform (2).

4. The continuous dry-wet combined dust removal and transportation device according to claim 2 or 3, characterized in that: A material limiting pressure frame (2a3) is provided between the cyclone dust collector (2a1) and the middle-end conveying platform (2), and a plurality of rotatable rollers (2a4) are provided at the bottom of the material limiting pressure frame (2a3), and an intermediate conveying channel is formed between the rollers (2a4) and the middle-end conveying platform (2).

5. The continuous dry-wet combined dust removal and transportation device according to claim 4 is characterized in that: The wet multi-drum dust suction mechanism (3b) comprises a spray pipeline (3b1) and a double-drum cyclone dust collector (3b2) arranged above the terminal conveying platform (3); a spray port (3b3) opening downward is provided at the bottom of the spray pipeline (3b1); the spray port (3b3) and the double-drum cyclone dust collector (3b2) are arranged in an alternating manner.

6. The continuous dry-wet combined dust removal and transportation device according to claim 5 is characterized in that: An electrically controlled fan module (3b4) is provided on the left side of the double-cylinder cyclone dust collector (3b2), and the connecting pipe (4) and the double-cylinder cyclone dust collector (3b2) are respectively connected to the electrically controlled fan module (3b4) via a relay multi-way pipe (3b5).

7. The continuous dry-wet combined dust removal and transportation device according to claim 6 is characterized in that: The electrically controlled fan module (3b4) comprises an air induced draft box (3b6), a fan (3b7), a control panel (3b8) and an exhaust pipe (3b9).

8. The continuous dry-wet combined dust removal and transportation device according to claim 1 or 2 or 3 or 5 or 6 or 7, characterized in that: The rake claw structure (5) comprises a fixed frame (5a) arranged at the exit of the terminal conveying platform (3), a lifting seat (5a1) capable of reciprocating linear motion in a vertical direction is arranged in the fixed frame (5a), a rake claw (5a2) capable of reciprocating linear motion in a horizontal direction is arranged at the right end of the lifting seat (5a1), and the lifting seat (5a1) and the rake claw (5a2) are respectively driven by a linear drive.

9. The continuous dry-wet combined dust removal and transportation device according to claim 8, characterized in that: A bottom gap groove (30) is formed between the chain transport structure (3c) and the terminal transport platform (3), and a sludge barrel (31) is installed between the fixed frame (5a) and the terminal transport platform (3).

10. The continuous dry-wet combined dust removal and transportation device according to claim 9, characterized in that: The rake claw (5a2) comprises a palm body (5a3) and a claw body (5a4), and the claw body (5a4) corresponds to the position of the bottom gap groove (30) and matches the shape.

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