Screening device and waste smoke treatment equipment

Abstract

The utility model relates to a screening device and waste cigarette treatment equipment, and relates to the technical field of cigarette treatment. The screening device comprises a support, a screening assembly and a driving assembly, the screening assembly comprises a screening frame installed on the support, a plurality of screens arranged in the screening frame and first elastic pieces connected with the screening frame and the support correspondingly, and the screens are distributed in a stacked mode in the gravity direction; a plurality of layers of cleaning holes are formed in the side of the screening frame, and at least part of the side of each screen is exposed to the corresponding cleaning hole. The output end of the driving assembly is connected with one end of the screening frame so as to drive the screening frame and the screens to vibrate. Impurities in tobacco shreds can be reduced, the recovery rate is increased, and cleaning is convenient.

Description

Technical Field

[0001] The present application relates to the technical field of cigarette processing, and in particular to a screening device and waste cigarette processing equipment. Background Art

[0002] In the process of handling waste cigarettes, tobacco is often leaked out of cigarette paper by beating or cutting. In the recycling process, the recovery rate of tobacco is low and the proportion of impurities in tobacco is high, resulting in a large amount of tobacco waste and economic losses.

[0003] There is also a rubbing and screening method, which uses the rotation of the inner and outer rollers to rub the cigarettes, separate the tobacco from the paper tube, form a mixture of tobacco and cigarette paper, and then sort the tobacco through a circular vibration screen. However, the effective area of ​​circular vibration screening is small. After the mixture of tobacco and cigarette paper falls into the center of the circular vibration, it will diffuse to the edge of the screen at a very fast speed. When the screen aperture is set too small, the tobacco and cigarette paper mixture is not screened thoroughly, and the cigarette paper contains a large amount of tobacco; when the screen aperture is set too large, the tobacco contains a large amount of paper scraps. In addition, the circular vibration screen adopts a fully enclosed structure. When cleaning the circular vibration screen, each layer of the screen must be disassembled, which takes a long time to clean and requires high labor intensity. Utility Model Content

[0004] Based on this, it is necessary to provide a screening device and waste smoke treatment equipment to address the problems that the screening devices in related technologies are not thorough and difficult to clean.

[0005] To achieve the above objectives, the technical solutions adopted in this application are as follows:

[0006] In a first aspect, an embodiment of the present application provides a screening device, comprising:

[0007] Bracket;

[0008] A screening assembly, the screening assembly comprising a screening frame mounted on the support, a plurality of screens arranged in the screening frame, and a first elastic member respectively connected to the screening frame and the support, the screens being stacked and distributed along the gravity direction, the side of the screening frame being provided with multiple layers of cleaning holes, and at least a portion of the side of each screen being exposed to each cleaning hole;

[0009] A driving component, wherein the output end of the driving component is connected to one end of the screening frame to drive the screening frame and each of the screens to vibrate.

[0010] In one embodiment of the first aspect, the screening device further includes a paving assembly. The paving assembly includes a vibrating screen disposed on a side of the screening frame away from the support, and a second elastic member connected to the vibrating screen. One end of the second elastic member away from the vibrating screen is connected to the support, and the vibrating screen is connected to the driving assembly to vibrate under the drive of the driving assembly.

[0011] In one embodiment of the first aspect, the driving assembly includes a motor mounted on the support, an eccentric shaft drivingly connected to the motor, a driving block mounted on the eccentric shaft, an input elastic piece connected to an end of the driving block away from the eccentric shaft, a vibration splitting block connected to an end of the input elastic piece away from the driving block, and two output elastic piece groups connected to the vibration splitting block. One end of one of the output elastic piece groups away from the vibration splitting block is connected to the screening frame, and one end of the other output elastic piece group away from the vibration splitting block is connected to the vibrating screen.

[0012] In one embodiment of the first aspect, a threaded rod is provided at an end of the driving block away from the eccentric shaft, a threaded sleeve is provided at an end of the input elastic piece away from the vibration splitting block, and the threaded rod is in threaded engagement with the threaded sleeve.

[0013] In one embodiment of the first aspect, each of the output elastic piece groups includes two output elastic pieces, and the two output elastic pieces in each output elastic piece group are arranged in a crosswise manner.

[0014] In one embodiment of the first aspect, the screening assembly includes a first screen, a second screen, and a third screen. The first screen, the second screen, and the third screen are stacked and installed in the screening frame in sequence from outside to inside, and the pore diameters of the first screen, the second screen, and the third screen decrease in sequence.

[0015] In one embodiment of the first aspect, the pores of the first screen are waist-shaped holes. The waist-shaped holes have a first preset spacing and a second preset spacing. The first preset spacing is the spacing between two opposite ends of the waist-shaped hole provided with arc edges, and the second preset spacing is the spacing between two opposite sides of the waist-shaped hole provided with straight edges. The first preset spacing is 30 mm - 50 mm, and the second preset spacing is 2.8 mm - 5 mm.

[0016] In one embodiment of the first aspect, the pores of the second screen are round holes with a pore diameter of 6 mm - 8 mm.

[0017] In one embodiment of the first aspect, the pores of the third screen are round holes with a pore diameter of 0.8 mm - 2 mm.

[0018] In a second aspect, an embodiment of the present application further provides a waste smoke treatment device, including the screening device described in any of the above embodiments.

[0019] Compared with the related art, the beneficial effects of the present application are as follows: The present application provides a screening device and a waste smoke treatment device, which can be used for sorting tobacco shreds and cigarette paper during the waste smoke treatment process. The screening device includes a bracket, a screening assembly, and a driving assembly. Among them, the screening assembly includes a screening frame, a plurality of screening meshes, and a first elastic member. One end of the screening frame is connected to the output end of the driving assembly and is installed on the bracket under the support of the first elastic member. The plurality of screening meshes are stacked in the screening frame. In this way, during the screening process of tobacco shreds and cigarette paper, the screening frame and the screening meshes vibrate driven by the driving assembly, and the tobacco shreds and cigarette paper are screened through multiple layers of screening meshes in sequence, reducing impurities in the tobacco shreds and improving the recovery rate. At the same time, a cleaning hole is opened on the side of the screening frame to expose the sides of each screening mesh, facilitating the cleaning of the screening meshes. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0021] Figure 1 It is a front view structural schematic diagram of the screening device in some embodiments of the present application;

[0022] Figure 2 It is a sectional structural schematic diagram of the screening device in some embodiments of the present application;

[0023] Figure 3 It is a structural schematic diagram of the driving assembly in some embodiments of the present application;

[0024] Figure 4 It is a structural schematic diagram of the first screening mesh in some embodiments of the present application;

[0025] Figure 5 It is a structural schematic diagram of the second screening mesh in some embodiments of the present application;

[0026] Figure 6 It is a structural schematic diagram of the third screening mesh in some embodiments of the present application.

[0027] Explanation of the Reference Numerals in the Drawings:

[0028] 100. Screening device; 110. Bracket; 120. Screening assembly; 121. Screening frame; 122. Screen; 1221. First screen; 1222. Second screen; 1223. Third screen; 123. First elastic member; 130. Driving assembly; 131. Motor; 132. Eccentric shaft; 133. Driving block; 134. Input elastic piece; 135. Vibration sharing block; 136. Output elastic piece group; 1361. Output elastic piece; 137. Threaded rod; 138. Threaded sleeve; 140. Paving assembly; 141. Vibrating screen; 142. Second elastic member; 150. Universal wheel. Detailed implementation manners

[0029] To make the above objects, features, and advantages of the present application more obvious and understandable, the following will describe the detailed implementation manners of the present application with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific embodiments disclosed below.

[0030] In the description of the present application, it should be understood that if such terms as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or positional relationship indicated by these terms is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present application.

[0031] In addition, if the term "and / or" appears, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this article generally represents an "or" relationship between the associated objects before and after. If such terms as "first" and "second" appear, these terms are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In this application, unless otherwise clearly specified or limited, if terms such as "installed", "connected", "joined", "fixed", etc. appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In this application, unless otherwise clearly specified or limited, if there is a description such as the first feature being "on" or "under" the second feature, its meaning can be 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, the first feature being "above", "over", and "on top of" the second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath", and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower horizontal height than the second feature.

[0034] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there can also be an intermediate element. If an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. If so, the terms "vertical", "horizontal", "up", "down", "left", "right", and similar expressions used in this application are only for the purpose of illustration and do not represent the only implementation.

[0035] Refer to Figure 1 As shown, the embodiment of this application provides a screening device 100, which can be used for the separation of tobacco shreds and cigarette paper in the waste tobacco treatment process to reduce the recycled impurities in the tobacco shreds and improve the recovery rate. It should be noted that the screening device 100 provided in this application can be applied to various sorting scenarios. For the convenience of understanding, the processing scenario of tobacco shred recycling is used as an example for illustration.

[0036] Specifically, the screening device 100 includes a bracket 110, a screening assembly 120, and a driving assembly 130. Among them, the bracket 110 can be installed on the ground or the working table, and both the screening assembly 120 and the driving assembly 130 can be installed on the bracket 110. At the same time, the screening assembly 120 and the driving assembly 130 are connected so that the driving assembly 130 drives the screening assembly 120 to vibrate, thereby separating the tobacco shreds and cigarette paper in the screening assembly 120 under vibration.

[0037] Combined withFigure 2 As shown, the screening assembly 120 includes a screening frame 121, a plurality of screens 122 and a first elastic member 123. The screening frame 121 is connected to the output end of the driving assembly 130 and is installed on the bracket 110 through the first elastic member 123, so as to provide elastic support to the screening frame 121 through the first elastic member 123. Driven by the driving assembly 130, the screening frame 121 vibrates up and down, and the first elastic member 123 produces elastic deformation following the vibration of the screening frame 121, thereby ensuring the stable operation of the screening frame 121. The plurality of screens 122 are stacked up and down along the direction of gravity and are sequentially installed in the screening frame 121. During the vibration of the screening frame 121, each screen 122 follows the synchronous vibration, thereby performing multi-layer vibration sorting of tobacco and cigarette paper, so that fine tobacco falls to the bottom of the screening frame 121, thereby improving the recovery rate of tobacco.

[0038] Furthermore, the driving assembly 130 is connected to one end of the screening frame 121, and the first elastic member 123 is disposed at one end of the screening frame 121 away from the driving assembly 130. In a non-operating state, the two can cooperate to support the screening frame 121, and in an operating state, the end of the screening frame 121 connected to the driving assembly 130 is a force-applying end, the resistance from one end of the first elastic member 123 is small, the frequency of the screening frame 121 is higher, and the screening efficiency is improved.

[0039] Exemplarily, the first elastic member 123 may be a metal spring sheet having a certain metal hardness and elasticity, so as to meet the requirements of supporting and vibration buffering for the screening frame 121 .

[0040] The number of the screens 122 can be two, three, four, etc., and can be selected according to actual needs. Each screen 122 can be installed in the screening frame 121 by welding, bolt locking, buckle locking, etc., and no specific restrictions are made here. In other embodiments, a support block or a mounting groove can also be provided in the screening frame 121 so that the screen 122 overlaps the support block, or the side of the screen 122 is embedded in the mounting groove, so as to facilitate the disassembly and replacement of the screen 122 and facilitate the maintenance of the device.

[0041] The screening frame 121 can be a frame structure formed by welding metal plates, which includes a bottom plate and side plates surrounding the bottom plate, and the top side is an open structure to facilitate the entry of materials, and the side plates are used to block the materials during the screening process. The bottom plate receives the screened tobacco, and a discharge port is provided on the side away from the drive assembly 130 to collect the recovered tobacco through the discharge port.

[0042] Furthermore, a plurality of cleaning holes are provided on the side of the screening frame 121, and at least a portion of the side of each screen 122 is exposed to each cleaning hole, so that the material attached to the surface of each screen 122 can be cleaned through the cleaning hole.

[0043] Exemplarily, the number of layers of the cleaning holes is adapted to the number of the screening meshes 122, and may also be two, three, four, etc., and is specifically selected according to the number of the screening meshes 122. Each layer of cleaning holes may include a plurality of waist-shaped holes arranged oppositely, and the plurality of waist-shaped holes are arranged at intervals to facilitate the cleaning of multiple parts of the screening mesh 122. In some other embodiments, each layer of cleaning holes may also include two strip-shaped grooves arranged oppositely, and both ends of the strip-shaped grooves are respectively close to both ends of the screening frame 121, so as to expose the area of the screening mesh 122 to the greatest extent and facilitate cleaning.

[0044] In some embodiments, three screening meshes 122 are provided, which are the first screening mesh 1221, the second screening mesh 1222, and the third screening mesh 1223 in sequence. The first screening mesh 1221, the second screening mesh 1222, and the third screening mesh 1223 are sequentially stacked and installed in the screening frame 121 from outside to inside, and the aperture diameters of the screening holes of the first screening mesh 1221, the second screening mesh 1222, and the third screening mesh 1223 decrease in sequence.

[0045] Specifically, in this embodiment, the outside refers to the top close to the screening frame 121, and the inside refers to the bottom close to the screening frame 121, that is, the first screening mesh 1221, the second screening mesh 1222, and the third screening mesh 1223 are sequentially stacked from top to bottom. Since the aperture diameters of the screening holes of the first screening mesh 1221, the second screening mesh 1222, and the third screening mesh 1223 decrease in sequence, during the screening process, the cut tobacco passes through the screening of the three screening meshes 122 in sequence, and impurities of different sizes can be screened, reducing the impurities in the cut tobacco and improving the recovery rate and quality of the cut tobacco.

[0046] Referring together to Figure 4 As shown, in some embodiments, the screening holes of the first screening mesh 1221 are waist-shaped holes, and the waist-shaped holes have a first preset spacing and a second preset spacing. The first preset spacing is the spacing between two opposite ends of the waist-shaped hole provided with arc edges, and the second preset spacing is the spacing between two opposite sides of the waist-shaped hole provided with straight edges. The first preset spacing is 30 mm - 50 mm, and the second preset spacing is 2.8 mm - 5 mm.

[0047] Exemplarily, the first preset spacing and the second preset spacing may be the length and width of the waist-shaped hole respectively. The first preset spacing may be 30 mm, 35 mm, 40 mm, 45 mm, 50 mm, etc., and the second preset spacing may be 2.8 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc., and can be specifically selected according to the size of the waste cigarette sticks. Through the setting of the first screening mesh 1221, the preliminary separation of the cut tobacco and the cigarette paper can be realized, so that the cigarette paper with larger size remains on the first screening mesh 1221, and the cut tobacco and impurities with smaller size fall onto the second screening mesh 1222.

[0048] Referring together to Figure 5 As shown, further, the screening holes of the second screening mesh 1222 are circular holes and the aperture diameter is 6 mm - 8 mm.

[0049] Exemplarily, the aperture of the sieve holes of the second sieve 1222 can be 6 mm, 6.5 mm, 7 mm, 7.5 mm, 8 mm, etc., and can be specifically selected according to the size of the impurities. By providing the second sieve 1222, long strip pieces of paper with a larger area mixed in the cut tobacco can be screened, realizing further separation of the cigarette paper.

[0050] Refer to together Figure 6 As shown, further, the sieve holes of the third sieve 1223 are round holes and the aperture is 0.8 mm - 2 mm.

[0051] Exemplarily, the aperture of the sieve holes of the second sieve 1222 can be 0.8 mm, 0.9 mm, 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, etc., and can be specifically selected according to the specifications of the cut tobacco. By providing the third sieve 1223, the cut tobacco dust contained in the cut tobacco can be screened to filter the cut tobacco dust to the bottom of the screening frame 121, while the cut tobacco with higher quality remains on the third sieve 1223.

[0052] Refer to again Figure 1 and Figure 2 As shown, in some embodiments, the screening device 100 further includes a paving assembly 140. The paving assembly 140 is disposed above the screening frame 121 and is connected to the output end of the driving assembly 130 to vibrate under the drive of the driving assembly 130, for initially paving the mixture of cut tobacco and cigarette paper, preventing the recycled materials from piling up, and facilitating subsequent screening.

[0053] Specifically, the paving assembly 140 includes a vibrating screen 141 and a second elastic member 142. The vibrating screen 141 is disposed on the side of the screening frame 121 away from the support 110, and the discharge port of the vibrating screen 141 is located at one end close to the driving assembly 130, so that the cut tobacco falls on the end of the screening frame 121 after being dispersed, increasing the vibration stroke of the cut tobacco. One end of the second elastic member 142 is connected to the vibrating screen 141, and the end away from the vibrating screen 141 is connected to the support 110 to provide elastic support for the vibrating screen 141. One end of the vibrating screen 141 is connected to the driving assembly 130 to vibrate under the drive of the driving assembly 130. The second elastic member 142 is located at the end of the vibrating screen 141 away from the driving assembly 130 to increase the vibration frequency of the vibrating screen 141.

[0054] Exemplarily, the second elastic sheet can be the same metal elastic sheet as the first elastic member 123 to meet the support and vibration buffering of the vibrating screen 141.

[0055] Continue to refer to Figure 3 As shown, in some embodiments, the driving assembly 130 includes a motor 131, an eccentric shaft 132, a driving block 133, an input elastic sheet 134, a vibration dividing block 135, and two output elastic sheet groups 136.

[0056] Specifically, the motor 131 is installed on the bracket 110. The eccentric shaft 132 is connected to the output shaft of the motor 131 through a transmission structure so as to rotate under the drive of the motor 131. Exemplarily, the transmission structure can be structures such as belts and pulleys, chains and sprockets, etc., and no further elaboration is made here. The drive block 133 is rotatably installed on the eccentric shaft 132 and moves up and down reciprocally as the eccentric shaft 132 rotates. The input elastic piece 134 is connected to one end of the drive block 133 away from the eccentric shaft 132, moves up and down following the drive block 133, and generates a certain elastic deformation. The vibration separation block 135 is rotatably arranged above the bracket 110 through a pin shaft, and one side thereof is connected to the input elastic piece 134, so that during the up and down movement of the input elastic piece 134, it reciprocally rotates along the pin shaft.

[0057] Furthermore, one ends of the two output elastic piece groups 136 away from the vibration separation block 135 are respectively connected to the screening frame 121 and the vibrating screen 141, so that the vibration functions of the two components can be realized only by one vibration source, with a concise structure and reduced energy consumption.

[0058] Still further, each output elastic piece group 136 includes two output elastic pieces 1361, and the two output elastic pieces 1361 in each output elastic piece group 136 are arranged in a crossed manner. In one output elastic piece group 136 connected to the vibrating screen 141, the two crossed output elastic pieces 1361 are respectively connected to the upper and lower ends on the same side of the vibrating screen 141. In one output elastic piece group 136 connected to the screening frame 121, the two crossed output elastic pieces 1361 are respectively connected to the upper and lower ends on the same side of the screening frame 121. Thus, driven by the motor 131 and the two output elastic pieces 1361, the vibrating screen 141 and the screening frame 121 can have multiple vibration directions. When the output elastic piece 1361 connected to the upper ends of the vibrating screen 141 and the screening frame 121 is stressed, the materials on the vibrating screen 141 and the screening frame 121 move in the same direction under vibration. When the output elastic piece 1361 connected to the lower ends of the vibrating screen 141 and the screening frame 121 is stressed, the materials move in the opposite direction. Thus, during the repeated vibration process, the material distribution is kept uniform, and the materials are prevented from accumulating on the side of the screen mesh 122 in the same vibration direction for a long time, affecting the screening effect.

[0059] Still further, a threaded rod 137 is provided at one end of the drive block 133 away from the eccentric shaft 132, and a threaded sleeve 138 is provided at one end of the input elastic piece 134 away from the vibration separation block 135. The threaded rod 137 is in threaded cooperation with the threaded sleeve 138. Thus, by screwing through the cooperation between the threaded rod 137 and the threaded sleeve 138, the distance between the drive block 133 and the input elastic piece 134 is adjusted, and the vibration frequencies of the vibrating screen 141 and the screening frame 121 are adjusted.

[0060] In one embodiment, the threaded rod 137 is rotatably connected to the driving block 133, and the threaded sleeve 138 is fixedly connected to the input elastic sheet 134. Thus, by screwing the threaded rod 137 to rotate relative to the threaded sleeve 138, the distance between the driving block 133 and the input elastic sheet 134 can be adjusted.

[0061] In another embodiment, the threaded rod 137 is fixedly connected to the driving block 133, and the threaded sleeve 138 is rotatably connected to the input elastic sheet 134. Thus, by screwing the threaded sleeve 138 to rotate relative to the threaded rod 137, the distance between the driving block 133 and the input elastic sheet 134 can be adjusted.

[0062] Of course, in other embodiments, the positions of the threaded rod 137 and the threaded sleeve 138 can be interchanged. For example, a threaded sleeve 138 is provided at one end of the driving block 133 away from the eccentric shaft 132, and a threaded rod 137 is provided at one end of the input elastic sheet 134 away from the sub-vibrating block 135.

[0063] In some embodiments, the bracket 110 can be a metal welded workpiece, including multiple columns and crossbeams. One end of the column abuts against the ground, and a support surface can be provided at the other end to mount each component through the support surface. The two ends of the crossbeam are respectively connected to two columns to increase the structural stability of the bracket 110.

[0064] Furthermore, the bracket 110 includes two side mounting frames located above and oppositely arranged. The screening frame 121 is installed between the two side mounting frames, and both the first elastic member 123 and the second elastic member 142 are fixed to the side mounting frames.

[0065] In some embodiments, universal wheels 150 are installed at the bottom of the bracket 110 to integrally move the screening device 100 through the universal wheels 150.

[0066] An embodiment of the present application further provides a waste smoke treatment device, including the screening device 100 in any of the above embodiments.

[0067] This embodiment has the screening device 100 in any of the above embodiments. Therefore, it has all the beneficial effects of the screening device 100 in any of the above embodiments, which will not be elaborated here one by one.

[0068] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0069] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patented application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A screening device, characterized in that: include: Bracket; A screening assembly, the screening assembly comprising a screening frame mounted on the support, a plurality of screens arranged in the screening frame, and a first elastic member respectively connected to the screening frame and the support, the screens being stacked and distributed along the gravity direction, the side of the screening frame being provided with multiple layers of cleaning holes, and at least a portion of the side of each screen being exposed to each cleaning hole; A driving component, wherein the output end of the driving component is connected to one end of the screening frame to drive the screening frame and each of the screens to vibrate.

2. The screening device according to claim 1, characterized in that: The screening device also includes a spreading assembly, which includes a vibrating screen arranged on the side of the screening frame away from the bracket and a second elastic member connected to the vibrating screen, wherein the end of the second elastic member away from the vibrating screen is connected to the bracket, and the vibrating screen is connected to the driving assembly so as to vibrate under the drive of the driving assembly.

3. The screening device according to claim 2, characterized in that: The driving assembly includes a motor mounted on the bracket, an eccentric shaft transmission-connected to the motor, a driving block mounted on the eccentric shaft, an input spring connected to one end of the driving block away from the eccentric shaft, a vibration-dividing block connected to one end of the input spring away from the driving block, and two output spring groups connected to the vibration-dividing blocks, wherein one end of the output spring group away from the vibration-dividing block is connected to the screening frame, and the other end of the output spring group away from the vibration-dividing block is connected to the vibrating screen.

4. The screening device according to claim 3, characterized in that: A threaded rod is disposed at one end of the driving block away from the eccentric shaft, a threaded sleeve is disposed at one end of the input elastic piece away from the vibration-dividing block, and the threaded rod is threadably matched with the threaded sleeve.

5. The screening device according to claim 3, characterized in that: Each of the output spring sheet groups includes two output spring sheets, and the two output spring sheets in each of the output spring sheet groups are cross-arranged.

6. The screening device according to any one of claims 1 to 5, characterized in that: The screening assembly includes a first screen, a second screen and a third screen, which are stacked and installed in the screening frame from outside to inside, and the screen hole diameters of the first screen, the second screen and the third screen decrease in sequence.

7. The screening device according to claim 6, characterized in that: The sieve holes of the first screen are waist-shaped holes, and the waist-shaped holes have a first preset spacing and a second preset spacing. The first preset spacing is the spacing between two opposite ends of the waist-shaped hole with arc edges, and the second preset spacing is the spacing between two opposite sides of the waist-shaped hole with straight edges. The first preset spacing is 30mm-50mm, and the second preset spacing is 2.8mm-5mm.

8. The screening device according to claim 7, characterized in that: The mesh holes of the second sieve are round holes with a hole diameter of 6 mm to 8 mm.

9. The screening device according to claim 8, characterized in that: The mesh holes of the third sieve are round holes with a hole diameter of 0.8 mm to 2 mm.

10. A waste smoke treatment device, characterized in that: A screening device comprising the screening device described in any one of claims 1 to 9.

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