A bamboo powder screening device for processing bamboo powder products

Abstract

The application relates to a bamboo powder screening device for processing bamboo powder products, which comprises a screening box body with a feeding port at the top and a feeding auger, a first screen is arranged at the bottom of the feeding port in the interior of the screening box body, first blowing fans and permanent magnets are arranged above the first screen and are oppositely distributed left and right, the first blowing fans blow air to the right, and the permanent magnets are in an inclined state with the left end being low and the right end being high; a vertical partition is arranged below the first screen to divide the first screen into a left screening cavity and a right screening cavity, a second screen is arranged at the bottom of the first screen in the interior of the left screening cavity, and the second screen is in an inclined state with the left end being high and the right end being low; a third screen is horizontally arranged in the interior of the right screening cavity, and the left end of the third screen is connected with the right end of the second screen through a communication hole in the middle of the vertical partition. The device is rationally designed, iron can be effectively removed, and the bamboo powder is screened through the first screen, the second screen and the third screen in sequence, the three screens are combined, and the screening quality is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of bamboo powder screening device based on bamboo powder product processing. BACKGROUND

[0002] Takes a kind of natural, green environmental protection renewable resource as bamboo, more and more attention is paid, and the application field of bamboo product is also more and more extensive. Among them, bamboo powder processed by bamboo can not only be used as the raw material of welding rod, electrical device, but also can be used as adsorbent, reducing agent in metallurgical industry, is the raw material of manufacturing leather clothing, environmental protection tableware, even occupies a place in food field.

[0003] Due to the characteristics of thick and hard of bamboo fiber, bamboo powder is also widely used in the pressing forming of bamboo plastic board at present. Before bamboo powder is pressed into shape, bamboo powder needs to be screened to obtain bamboo powder of appropriate size. However, traditional bamboo powder screening is mostly done manually by hand, which causes large amount of work and low screening efficiency. Currently, there are also screening equipment for automatic screening of bamboo powder, which can improve the screening efficiency, but most of them are single-stage screening, which cannot grade the size of bamboo powder (for example, a raw material bamboo powder screening and drying device disclosed in China CN 205380051U), resulting in unsatisfactory screening quality. Moreover, bamboo powder will carry some iron filings after output from the crushing equipment. Currently, the crushed bamboo powder is manually turned before bamboo powder screening, and a magnet rod is used to remove iron from the crushed bamboo powder. The labor intensity of workers is high, the work efficiency is low, and the iron removal effect is poor. If iron removal can be carried out at the same time as bamboo powder screening, the work efficiency and iron removal effect will be effectively improved. In view of this, the present application is born. SUMMARY

[0004] The present application improves the existing problems in the prior art, i.e. the technical problem to be solved by the present application is to provide a bamboo powder screening device for bamboo powder product processing, which is reasonably designed, integrates multi-stage screening and iron removal, and effectively improves the screening quality and work efficiency.

[0005] In order to achieve the above object, the technical scheme adopted by the present application is: a bamboo powder screening device for processing bamboo powder products, comprising a screening box body provided with a feeding port at the top, a feeding auger arranged above the screening box body and used for conveying bamboo powder towards the feeding port, a first grade screen horizontally arranged inside the screening box body directly below the feeding port, the first grade screen being driven to move left and right by a first push-pull assembly, a first material blowing fan and a permanent magnet plate being arranged above the first grade screen and distributed left and right opposite to each other, the first material blowing fan being located below the left side of the feeding port and blowing air to the right, the permanent magnet plate being inclined with the left end being lower and the right end being higher, the left end of the permanent magnet plate being located above the right end of the first grade screen, a left screening cavity and a right screening cavity being separated by a vertical partition below the first grade screen, a second grade screen being arranged inside the left screening cavity directly below the first grade screen, the second grade screen being inclined with the left end being higher and the right end being lower, the second grade screen being connected with a vibration assembly, a third grade screen being horizontally arranged inside the right screening cavity, the left end of the third grade screen being connected with the right end of the second grade screen through a communication hole in the middle of the vertical partition, the third grade screen being driven to move left and right by a second push-pull assembly.

[0006] Further, the permanent magnet plate is connected with an external power supply through wires; an iron filings collecting tank with an open top is arranged above the right side of the first grade screen, the iron filings collecting tank being located between the permanent magnet plate and the first grade screen, an iron filings collecting cylinder being transversely mounted on the inner wall of the screening box body on the right side of the iron filings collecting tank, the cylinder rod of the iron filings collecting cylinder extending to the left and being connected with the iron filings collecting tank at the tail end to drive the iron filings collecting tank to move to the left below the left end of the permanent magnet plate.

[0007] Further, the mesh hole diameter of the first grade screen, the mesh hole diameter of the second grade screen and the mesh hole diameter of the third grade screen decrease in turn.

[0008] Further, the first push-pull assembly is a first linear push-pull motor transversely mounted on the left side wall of the screening box body, the output shaft of the first linear push-pull motor being connected with the left end of the first grade screen; the second push-pull assembly is a second linear push-pull motor transversely mounted on the right side wall of the screening box body, the output shaft of the second linear push-pull motor being connected with the right end of the third grade screen; the vibration assembly comprises a left exciter and a right exciter, the left exciter and the right exciter being distributed and mounted on the left and right ends of the bottom of the second grade screen.

[0009] Further, a second material blowing fan is arranged on the top of the left end of the second grade screen, the second material blowing fan being inclined with the left end being lower and the right end being higher, the air outlet direction of the second material blowing fan being parallel to the second grade screen and corresponding to the position of the communication hole.

[0010] Further, the first material blowing fan is vertically arranged.

[0011] Further, the left side wall of the screening box is provided with a first material suction assembly at the upper end for sucking the bamboo powder left on the first screen outward, and the left side wall of the screening box is provided with a second material suction assembly at the lower end for sucking the bamboo powder falling from the second screen outward.

[0012] Further, the first material suction assembly, the second material suction assembly, the third material suction assembly and the fourth material suction assembly are the same in structure and each include a material suction pipe penetrating through the side wall of the screening box, and a material suction fan is installed on the material suction pipe, the material suction pipe of the first material suction assembly is connected with the top of the first screen, the material suction pipe of the second material suction assembly and the material suction pipe of the fourth material suction assembly are connected with the inner bottom surface of the screening box, and the material suction pipe of the third material suction assembly is connected with the top of the third screen.

[0013] Further, the electric louver is arranged directly below the first screen.

[0014] Compared with the prior art, the present application has the following effects: the present application is reasonable in design, the bamboo powder is uniformly conveyed into the screening box through the feeding auger, then the bamboo powder is blown and sent to the permanent magnet plate by the first material blowing fan, the bamboo powder slides along the permanent magnet plate to the first screen, the permanent magnet plate adsorbs the iron filings in the bamboo powder by magnetic force, and effective iron removal is realized, then the bamboo powder is screened through the first screen, the second screen and the third screen in sequence, and the three-stage screening is combined, and the screening quality is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a schematic view of the front view of the embodiment of the present application. DETAILED DESCRIPTION

[0016] The present application will be further described in detail below in combination with the drawings and specific embodiments.

[0017] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0018] As Figure 1As shown, the present application is a bamboo powder screening device for processing bamboo powder products, which comprises a screening box 1, a feeding auger 2 located above the screening box 1, a feeding port 3 provided at the top of the screening box 1, and a bottom discharge port of the feeding auger 2 in communication with the feeding port at the top of the screening box 1, so that the bamboo powder to be screened is uniformly conveyed into the screening box 1 by the feeding auger. A first screen 4 is horizontally provided at the inside of the screening box 1 directly below the feeding port 3. A first material blowing fan 5 and a permanent magnet plate 6 are provided above the first screen 4 and are distributed left and right. The first material blowing fan 5 is located below the left side of the feeding port 3 and blows air to the right. The permanent magnet plate 6 is inclined with the left end lower and the right end higher. The left end of the permanent magnet plate 6 is located above the right end of the first screen 4. The bamboo powder falling from the feeding port is blown away to the right by the first material blowing fan 5 and falls on the permanent magnet plate 6. Then, the bamboo powder on the permanent magnet plate 6 slides down along the permanent magnet plate 6 to the first screen 4 under the action of gravity and wind blowing. The permanent magnet plate 6 uses magnetic force to adsorb the iron filings in the bamboo powder, thereby effectively removing iron. The bottom of the first screen 4 is divided into a left screening chamber 8 and a right screening chamber 9 by a vertical partition 7. A second screen 10 is provided at the inside of the left screening chamber 8 directly below the first screen 4. The second screen 10 is inclined with the left end higher and the right end lower. A third screen 11 is horizontally provided at the inside of the right screening chamber 9. The left end of the third screen 11 is connected to the right end of the second screen 10 through a communication hole 12 in the middle of the vertical partition 7. The mesh size of the first screen 4, the mesh size of the second screen 10, and the mesh size of the third screen 11 decrease in turn. The bamboo powder passing through the first screen falls on the second screen. The second screen performs secondary screening on the bamboo powder. The bamboo powder passing through the second screen falls at the bottom of the left screening chamber. The bamboo powder remaining on the second screen slides to the right, passes through the communication hole, and falls on the third screen. The third screen performs tertiary screening on the bamboo powder. The screened bamboo powder falls at the bottom of the right screening chamber.

[0019] In another embodiment, in order to improve the screening effect of the first screen, the first screen 4 is driven to move left and right by a first push-pull assembly to realize material screening. Further, the first push-pull assembly is a first linear push-pull motor 13 horizontally installed on the left side wall of the screening box 1. The output shaft of the first linear push-pull motor 13 is connected to the left end of the first screen 4.

[0020] In another embodiment, the second screen 10 is connected to a vibration assembly. The vibration assembly applies vibration to the second screen to improve the screening effect of the second screen. The vibration assembly comprises a left vibration exciter 14 and a right vibration exciter 15, which are distributed and installed at the left and right ends of the bottom of the second screen 10.

[0021] In another embodiment, in order to improve the screening effect of the three-stage screen, the three-stage screen 11 is driven to move left and right by the second push-pull assembly to realize screening. Further, the second push-pull assembly is a second linear push-pull motor 16 horizontally installed on the right side wall of the screening box 1, and the output shaft of the second linear push-pull motor 16 is connected with the right end of the three-stage screen 11.

[0022] In another embodiment, the permanent magnet plate 6 is connected with an external power supply via a wire, and the external power supply controls the energization and de-energization of the permanent magnet plate. However, when the permanent magnet plate is energized, the permanent magnet plate uses magnetic force to adsorb the iron filings in the bamboo powder. When the permanent magnet plate is de-energized, the permanent magnet plate loses the magnetic force, and the iron filings on the permanent magnet plate slide downward.

[0023] In another embodiment, in order to facilitate the collection of the iron filings on the permanent magnet plate 6, an iron filings collection groove 17 with an open top is arranged above the right side of the first-stage screen 4, the iron filings collection groove 17 is located between the permanent magnet plate 6 and the first-stage screen 4, and an iron filings collection cylinder 18 is horizontally installed on the inner wall of the screening box 1 on the right side of the iron filings collection groove 17. The cylinder rod of the iron filings collection cylinder 18 extends to the left and is connected with the iron filings collection groove 17 at the tail end to drive the iron filings collection groove 17 to move to the left of the permanent magnet plate 6. In operation, when the first-stage screen 4 finishes screening, the iron filings collection cylinder 18 drives the iron filings collection groove 17 to move to the left of the permanent magnet plate 6, and then the permanent magnet plate 6 is de-energized. The iron filings adsorbed on the permanent magnet plate 6 lose the magnetic force adsorption and slide downward along the permanent magnet plate 6 to the iron filings collection groove 17. After the collection of the iron filings is completed, the iron filings collection cylinder 18 drives the iron filings collection groove 17 to reset to the right to avoid affecting the normal screening operation of the subsequent first-stage screen.

[0024] In another embodiment, the left end of the second-stage screen 10 is provided with a second material blowing fan 19, the second material blowing fan 19 is inclined with the left end being lower and the right end being higher, the second material blowing fan 19 is vertically distributed with the second-stage screen 10, the air outlet direction of the second material blowing fan 19 is parallel to the second-stage screen 10 and corresponds to the position of the communication hole. By arranging the inclined second material blowing fan 19 above the second-stage screen 10, the second material blowing fan 19 blows air toward the communication hole 12 to blow the bamboo powder remaining on the second-stage screen 10 after screening to the communication hole 12, so that the bamboo powder can pass through the communication hole more quickly and fall on the three-stage screen 11.

[0025] In another embodiment, the first material blowing fan 5 is vertically arranged, and the air outlet of the first material blowing fan 5 is opposite to the upper part of the permanent magnet plate 6.

[0026] In another embodiment, the upper end of the left side wall of the screening box 1 is provided with a first material suction assembly 20 for sucking the bamboo powder left on the first screen 4; the lower end of the left side wall of the screening box 1 is provided with a second material suction assembly 21 for sucking the bamboo powder falling from the second screen 10; the right side wall of the screening box 1 is sequentially provided with a third material suction assembly 22 and a fourth material suction assembly 23 from top to bottom, the third material suction assembly 22 is used for sucking the bamboo powder flowing on the third screen 11; and the fourth material suction assembly 23 is used for sucking the bamboo powder falling from the third screen 11.

[0027] In another embodiment, the first material suction assembly 20, the second material suction assembly 21, the third material suction assembly 22 and the fourth material suction assembly 23 have the same structure and each include a material suction pipe 24 penetrating through the side wall of the screening box 1, and a material suction fan 25 is installed on the material suction pipe 24, the material suction pipe 24 of the first material suction assembly 20 is connected with the top of the first screen 4, the material suction pipe 24 of the second material suction assembly 21 and the material suction pipe 24 of the fourth material suction assembly 23 are connected with the inner bottom surface of the screening box 1; and the material suction pipe of the third material suction assembly 22 is connected with the top of the third screen 11.

[0028] In another embodiment, an electric louver 26 is arranged below the first screen 4. By arranging the electric louver below the first screen, the electric louver is closed after the feeding and screening of the first screen are completed, so that the bamboo powder is not upwardly flowed and passed through the first screen under the action of the wind of the second material blowing fan, and the screening effect is affected.

[0029] In another embodiment, the feeding auger 2 is used to control the conveying speed of the bamboo powder, so that the bamboo powder is dropped from the feeding port in a relatively scattered state, and at this time, the first material blowing fan can better blow and send the bamboo powder to the permanent magnet plate.

[0030] If the present application discloses or involves mutually fixedly connected parts or structural members, unless otherwise stated, the fixed connection can be understood as: detachably fixed connection (for example, connected by using bolts or screws), and can also be understood as: non-detachable fixed connection (for example, riveting, welding), of course, the mutually fixed connection can also be replaced by an integral structure (for example, manufactured by using casting process integral forming) (obviously, except for the integral forming process).

[0031] In addition, the terms used to represent the position relationship or shape in any technical solution disclosed in the present application include the state or shape similar, similar or close to the above, unless otherwise stated.

[0032] Any component provided by the present application can be assembled from multiple individual components, or can be a single component manufactured by integral forming process.

[0033] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not to limit the present application; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the specific embodiments of the present application can be modified or equivalent replacements can be made to some technical features without departing from the spirit of the technical solutions of the present application, and all of them should be covered in the technical solution range of the present application claimed by the present application.

Claims

1. A bamboo powder screening device for processing bamboo powder products, characterized by: The application relates to a bamboo powder screening device, which comprises a screening box with a feeding port at the top, a feeding auger arranged above the screening box and used for conveying bamboo powder towards the feeding port, a first-stage screen arranged horizontally below the feeding port in the interior of the screening box, a first blowing fan and a permanent magnet plate arranged above the first-stage screen and distributed leftwards and rightwards, the first blowing fan being arranged below the left side of the feeding port and blowing air rightwards, the permanent magnet plate being inclined and having a left end lower than a right end, and the left end of the permanent magnet plate being arranged above the right end of the first-stage screen, a left screening cavity and a right screening cavity being separated by a vertical partition below the first-stage screen, a second-stage screen being arranged below the first-stage screen in the interior of the left screening cavity and being inclined with a left end higher than a right end, and the second-stage screen being connected with a vibration assembly, a third-stage screen being arranged horizontally in the interior of the right screening cavity, the left end of the third-stage screen being connected with the right end of the second-stage screen through a communication hole in the middle of the vertical partition, and the third-stage screen being driven to move leftwards and rightwards by a second pushing and pulling assembly. The permanent magnet plate is connected with an external power supply through wires, an iron scrap collecting tank with an open top is arranged above the right side of the first-stage screen, the iron scrap collecting tank is arranged between the permanent magnet plate and the first-stage screen, an iron scrap collecting cylinder is transversely arranged on the inner wall of the screening box at the right side of the iron scrap collecting tank, the cylinder rod of the iron scrap collecting cylinder extends leftwards and is connected with the iron scrap collecting tank at the tail end to drive the iron scrap collecting tank to move leftwards below the left end of the permanent magnet plate. The mesh hole diameter of the first-stage screen, the mesh hole diameter of the second-stage screen and the mesh hole diameter of the third-stage screen are gradually reduced. The left end of the second-stage screen is provided with a second blowing fan, the second blowing fan is inclined with a left end lower than a right end, the air outlet direction of the second blowing fan is parallel to the second-stage screen and corresponds to the position of the communication hole. A motorized louver is arranged below the first-stage screen.

2. The bamboo powder screening device for processing bamboo powder products according to claim 1, characterized in that: The first pushing and pulling assembly is a first linear pushing and pulling motor transversely arranged on the left side wall of the screening box, the output shaft of the first linear pushing and pulling motor is connected with the left end of the first-stage screen, the second pushing and pulling assembly is a second linear pushing and pulling motor transversely arranged on the right side wall of the screening box, the output shaft of the second linear pushing and pulling motor is connected with the right end of the third-stage screen, and the vibration assembly comprises a left exciter and a right exciter, the left exciter and the right exciter are arranged at the left end and the right end of the bottom of the second-stage screen.

3. The bamboo powder screening device for processing bamboo powder products according to claim 1, characterized in that: The first blowing fan is arranged vertically.

4. The bamboo powder screening device for processing bamboo powder products according to claim 1, characterized in that: A first material suction assembly is arranged on the left side wall of the screening box at the upper end and used for sucking the bamboo powder left on the first-stage screen, a second material suction assembly is arranged at the lower end of the left side wall of the screening box and used for sucking the bamboo powder falling from the second-stage screen, a third material suction assembly and a fourth material suction assembly are sequentially arranged on the right side wall of the screening box from top to bottom, the third material suction assembly is used for sucking the bamboo powder flowing on the third-stage screen, and the fourth material suction assembly is used for sucking the bamboo powder falling from the third-stage screen.

5. The bamboo powder screening device for processing bamboo powder products according to claim 4, characterized in that: The first, second, third and fourth material extraction assemblies have the same structure and each comprises a material extraction pipe penetrating through the side wall of the screening box, and a material extraction fan is installed on the material extraction pipe; the material extraction pipe of the first material extraction assembly is connected with the top of the first screen, the material extraction pipes of the second and fourth material extraction assemblies are connected with the inner bottom surface of the screening box; and the material extraction pipe of the third material extraction assembly is connected with the top of the third screen.

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