Multi-stage screening equipment convenient to adjust
By designing an easily adjustable multi-stage screening device, the problems of powder rejection and screening power adjustment were solved, enabling timely powder rejection and fine particle size separation, thereby improving the purity and processing efficiency of boron carbide raw materials.
Patent Information
- Application Number
- CN202422737998.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-11-28
- Estimated Expiration
- 2034-11-11
AI Technical Summary
Existing screening equipment lacks powder removal capabilities and cannot adjust screening power according to the particle size or weight of the raw materials, resulting in powder mixing, which reduces the purity of boron carbide and affects processing efficiency.
A multi-stage screening device that is easy to adjust was designed. It adopts a sieve plate and screening components driven by a hydraulic cylinder, combined with a dust collection port and multi-stage filter elements, to achieve timely removal of powder and fine separation of particle size. The screening parameters are adjusted in real time by a dust concentration detector.
This improved the purity and screening efficiency of boron carbide raw materials, met the particle size requirements of different production processes, and enhanced the performance and quality of the final product.
Smart Images
Figure CN223602822U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to boron carbide production technical field, concretely is multistage screening equipment convenient to adjust. BACKGROUND
[0002] Boron carbide is an inorganic compound composed of boron and carbon. It has high hardness, low density, high melting point, good chemical stability and other characteristics. The production of boron carbide is a process of converting boron source and carbon source into boron carbide through a series of chemical reactions and processes.
[0003] In the early stage of boron carbide production, the raw materials need to be treated. The boron source and carbon source are mixed in a certain proportion and then sent to the multistage screening equipment for primary screening to remove impurities and large particles and impurities in the raw materials after reaction, thereby improving the purity of boron carbide.
[0004] The inventor found the following problems in the prior art during the implementation of the utility model: 1. However, most of these screening devices can only screen particles and impurities. There is no function to remove powder. These powders are mixed into the subsequent production process without being removed, which may reduce the purity of the boron carbide raw materials. This may affect the performance of the final product, such as hardness and wear resistance; 2. Most screening devices maintain consistent screening power during screening. It cannot be adjusted according to factors such as particle size or weight of the raw materials for each screening. This may cause excessive accumulation of materials on the screening assembly, affecting processing efficiency and screening quality. CONTENT OF THE UTILITY MODEL
[0005] The utility model discloses a purpose lies in providing convenient to adjust multistage screening equipment to solve the problem of lacking powder removing function and being unable to adjust according to the raw material granularity or weight of each screening factor in the above background art. In order to realize the above object, the utility model provides the following technical scheme: convenient to adjust multistage screening equipment, including processing box, the top of processing box outer wall is equipped with the feeding hopper, the one side of feeding hopper is equipped with the dust box, the dust box is connected through bolt on the top of processing box, the inside of processing box is equipped with first screening assembly, the top of first screening assembly is fixedly connected with first sieve plate, the inside of processing box is equipped with first shunt cavity, first shunt cavity is located one end of first sieve plate, and first shunt cavity and first screening assembly are located at the same horizontal position, the inner wall of first shunt cavity is equipped with the frame plate, the top of frame plate is connected with first filter piece, first filter piece is located one end of first sieve plate and is located below, the lower of first shunt cavity is equipped with the second shunt cavity who is through with, the inside of second shunt cavity is equipped with second screening assembly, the lower of second screening assembly is equipped with gravel box, the bottom of gravel box is attached to the inner bottom wall of processing box, one end of second screening assembly is fixedly connected with the flow guide plate, the lower of flow guide plate is equipped with raw material box, the bottom of raw material box and gravel box is the same horizontal position, and one end of raw material box and gravel box is attached.
[0006] The first screening assembly is composed of a fixed base and a movable base, one end of the fixed base is rotatably connected to the bottom wall inside the processing box, the other end of the fixed base is rotatably connected to the power output end of the hydraulic oil cylinder on both sides, the top of the hydraulic oil cylinder is rotatably connected to the inner wall of the processing box at both ends, the bottom of the movable base is slidably connected to the top of the fixed base, the outer wall of the movable base is penetrated by the horizontal shaft rod formed in the outer wall and is movably connected between the two end stands on the surface of the fixed base, the movable base is movably connected with the gravity block through the vertical shaft rod formed in the inner wall, and the outer wall of the gravity block is rotatably connected with the swing block at both ends.
[0007] The second screening assembly includes a screening frame, a driving pulley and a driven pulley, the screening frame is slidably connected between the inner walls of the second shunt cavity through the sliding blocks formed in the outer wall at both ends, the driving pulley and the driven pulley are connected by a belt and are rotatably connected to one end of the outer wall of the screening frame, the driven pulley is integrally connected with the runner through the shaft rod penetrating the shaft center, and the outer wall of the runner is rotatably connected with one end of the outer wall of the screening frame through the handle.
[0008] Further preferably, the feeding hopper is wide at the top and narrow at the bottom, and the narrow end extends to the interior of the processing box, and a part of the first sieve plate is located below the narrow end of the feeding hopper at a distance, and the dust collection ports are provided through the interior walls of the processing box at both ends corresponding to the position of the first sieve plate, and one end of the dust collection port is provided with a grid-shaped filtering structure, and the other end of the dust collection port is connected with the dust box through a pipeline via a centrifugal fan.
[0009] Further preferably, the first sieve plate is a long strip-shaped plate body with a surrounding edge structure on three sides, and the outer walls of both ends of the first sieve plate are attached to the interior walls of the processing box, and the end of the first sieve plate adjacent to the first shunt cavity is open, and a dust concentration detector is installed at the end of the processing box corresponding to the first sieve plate.
[0010] Further preferably, one end of the fixed base is provided with a lifting structure through a hydraulic oil cylinder, and the outer walls of both ends of the movable base are connected with the fixed base through springs, and the springs are sleeved on the outer walls of the horizontal shaft rods, and springs are sleeved on the outer walls of the vertical shaft rods corresponding to the vertical shaft rods provided on the interior walls of the gravity blocks of the movable base, and the swing blocks are coaxially connected between the movable base and the fixed base to form a swing mechanism.
[0011] Further preferably, one end of the first filter is higher, and the other end is lower, and an inclined slope structure is formed between the bottom of the lower end and the bottom of the higher end, and the lower end of the first filter is connected with the first sieve plate and is inserted and connected to the slot of the interior wall on one side of the first shunt cavity, and the bottom of the first filter and the bottom of the shelf plate are both provided with filter through holes, and the through hole of the shelf plate is larger than the first filter.
[0012] Further preferably, the sieve frame is provided with a reciprocating motion through a rotating wheel, and a second filter is provided in the interior walls of the sieve frame, and a third filter is slidably connected below the second filter in the interior of the sieve frame, and a certain interval is provided between the third filter and the second filter, and a rubber plug is inserted and connected to the slot corresponding to the outer wall of the third filter on one side of the outer wall of the sieve frame, and the surface pore size of the third filter is smaller than that of the second filter.
[0013] Further preferably, the guide plate is inclined, and the higher end of the guide plate is integrally connected with the open end of the sieve frame, and the lower end of the guide plate is located above the raw material box, and the door plates are rotatably connected to the positions corresponding to the first filter, the third filter and the gravel box on the exterior of the processing box.
[0014] Compared with the prior art, the present application has the following advantages:
[0015] The utility model discloses, first screen plate realizes reciprocating motion through first screening subassembly, makes material progressive conveying and hits and scatters in swing, can in time suck out collection to improve screening efficiency, simultaneously, the filter structure of dust collection port avoids raw material loss, and the oblique structure and big aperture grid of first filter piece after first screen plate processing can separate different granularity raw material and intercept big particle, and the reciprocating motion of sieve frame and the combined use of second, third filter piece can realize fine screening, satisfy the requirement of different production process to granularity.
[0016] The utility model discloses, first screen plate vicinity's dust concentration detector real -time monitoring powder concentration can realize hydraulic cylinder adjustment first screen plate's angle, avoids unnecessary screening time waste, improves whole screening efficiency, and through multistage screening and fine filtration, effectively removes the impurity and powder in material, has improved boron carbide raw material's purity and quality, and simultaneously, the combined use and adjustable of different filter piece, can satisfy the requirement of different production link to raw material granularity, thereby promotes the performance and quality of final product. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the front view structure schematic drawing of the utility model;
[0018] Figure 2 It is the inside structure schematic drawing of the utility model processing box;
[0019] Figure 3 It is the first screening subassembly structure schematic drawing of the utility model;
[0020] Figure 4 It is the inside structure schematic drawing of the first shunt cavity of the utility model;
[0021] Figure 5 It is the second screening subassembly partial structure schematic drawing of the utility model;
[0022] Figure 6 It is the third filter piece distribution structure schematic drawing of the utility model.
[0023] In the drawing: 1, processing box;2, feed hopper;3, dust box;4, first screening subassembly;401, fixed base;402, movable base;403, hydraulic cylinder;404, gravity block;405, swing block;5, first screen plate;6, first shunt cavity;7, frame plate;8, first filter piece;9, second shunt cavity;10, second screening subassembly;1001, sieve frame;1002, driving pulley;1003, driven pulley;1004, runner;1005, second filter piece;1006, third filter piece;11, sand and gravel box;12, guide vane;13, raw material box;14, dust collection port. DETAILED DESCRIPTION
[0024] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by the ordinary skilled in the art without creative work are within the scope of the present application.
[0025] Please refer to Figures 1 to 6 The present application provides a technical scheme: a multi-stage screening device convenient to adjust, comprising a treatment box 1, a feed hopper 2 is formed on the top of the outer wall of the treatment box 1, a dust box 3 is installed on one side of the feed hopper 2, the dust box 3 is connected to the top of the treatment box 1 through bolts, a first screening assembly 4 is installed in the treatment box 1, a first sieve plate 5 is fixedly connected to the top of the first screening assembly 4, a first shunt cavity 6 is formed in the treatment box 1, the first shunt cavity 6 is located at one end of the first sieve plate 5, and the first shunt cavity 6 and the first screening assembly 4 are located at the same horizontal position, a shelf plate 7 is formed between the inner walls of the first shunt cavity 6, a first filter 8 is connected to the top of the shelf plate 7, the first filter 8 is located at one end of the first sieve plate 5 and below it, a second shunt cavity 9 is formed below the first shunt cavity 6 and communicates therewith, a second screening assembly 10 is installed in the second shunt cavity 9, a gravel box 11 is installed below the second screening assembly 10, the bottom of the gravel box 11 is attached to the inner bottom wall of the treatment box 1, a guide plate 12 is fixedly connected to one end of the second screening assembly 10, a raw material box 13 is installed below the guide plate 12, the raw material box 13 is at the same horizontal position as the bottom of the gravel box 11, and the raw material box 13 is attached to one end of the gravel box 11.
[0026] The first screening assembly 4 is composed of a fixed base 401 and a movable base 402, one end of the fixed base 401 is rotatably connected to the bottom wall inside the treatment box 1, the other end of the fixed base 401 is rotatably connected to the power output end of the bottom of the hydraulic oil cylinder 403 on both sides, the top of the hydraulic oil cylinder 403 is rotatably connected to the inner walls of the treatment box 1 at both ends, the bottom of the movable base 402 is slidably connected to the top of the fixed base 401, the outer walls of the movable base 402 are both penetrated and movably connected between the two end stands on the surface of the fixed base 401 through the horizontal shaft rods formed on the outer walls, the movable base 402 is movably connected with a gravity block 404 through the vertical shaft rods formed on the inner walls, and the outer walls of the gravity block 404 are both rotatably connected with a swing block 405.
[0027] The second screening assembly 10 comprises a screening frame 1001, a driving pulley 1002 and a driven pulley 1003, the screening frame 1001 is slidably connected between the inner walls of the second flow distribution cavity 9 through the sliding blocks formed at the two ends of the outer wall of the screening frame 1001, the driving pulley 1002 and the driven pulley 1003 are connected through a belt and rotatably connected to one end of the outer wall of the screening frame 1001, the driven pulley 1003 is integrally connected with a rotating wheel 1004 through a shaft rod penetrating the shaft center of the driven pulley 1003, and the outer wall of the rotating wheel 1004 is rotatably connected to one end of the outer wall of the screening frame 1001 through a handle.
[0028] In the embodiment, as shown in Figure 1 and Figure 2 , the feeding hopper 2 is wide at the top and narrow at the bottom, and the narrow end extends into the interior of the processing box 1, and a part of the first sieve plate 5 is located below the narrow end of the feeding hopper 2 at a certain distance, and the dust collection port 14 is formed at equal distances through the inner walls of the processing box 1 corresponding to the positions of the first sieve plate 5, and the dust collection port 14 is provided with a grid-shaped filtering structure at one end, and the other end of the dust collection port 14 is connected to the dust box 3 through a pipeline via a centrifugal fan; when the raw materials first fall on the first sieve plate 5 through the feeding hopper 2 with the help of external conveying equipment, the first sieve plate 5 reciprocates due to the structural relationship between the components in the first screening assembly 4, so that the materials are conveyed forward in a progressive manner by the reciprocating swinging structure, and the materials are impacted and dispersed during the swinging process of the first sieve plate 5, and the powders mixed in the materials are timely and effectively sucked out and collected into the dust box 3, and the filtering structure on the surface of the dust collection port 14 can prevent other materials from being accidentally sucked into the dust collection port 14 and the centrifugal fan, thereby effectively avoiding the loss of raw materials under the premise of dust removal.
[0029] In the embodiment, as shown in Figure 2 and Figure 3 , the first sieve plate 5 is a long strip-shaped plate body with a surrounding edge structure on three sides, and the two ends of the outer wall of the first sieve plate 5 are attached to the inner walls of the processing box 1, and the end of the first sieve plate 5 adjacent to the first flow distribution cavity 6 is open, and a dust concentration detector is installed on the end of the processing box 1 corresponding to the first sieve plate 5; the structure of the first sieve plate 5 can effectively prevent the raw materials from falling from other gaps during the swinging process, ensure that all materials are processed on the predetermined screening path, avoid the loss and waste of materials, and improve the accuracy and efficiency of screening.
[0030] In the embodiment, as shown in Figure 3As shown, one end of the fixed base 401 is formed into a lifting structure by the hydraulic cylinder 403, and the outer wall of the movable base 402 is connected to the fixed base 401 by springs at both ends, and the springs are sleeved on the outer wall of the horizontal shaft rod, and the inner wall of the movable base 402 is sleeved with springs on the outer wall of the vertical shaft rod corresponding to the gravity block 404, the swing blocks 405 are coaxially connected between them, and the movable base 402 forms a swing mechanism between the inner walls of the fixed base 401 through the swing blocks 405; when the swing blocks 405 are driven to rotate by the servo motor, the gravity block 404 moves, and based on the connection of the gravity block 404 to the movable base 402 through the vertical rod and the spring, the movement of the gravity block 404 is combined with the elastic effect of the spring, thereby enhancing the vibration effect of the movable base 402, and when the movable base 402 is stressed, it will slide back and forth on the horizontal shaft rod, and the elastic effect of the spring effectively plays the role of buffering and resetting, and finally the movable base 402 drives the first sieve plate 5 to produce a screening motion, and the first sieve plate 5 is the first part of the fixed raw material processing, and the first sieve plate 5 is the first part of the fixed raw material processing, and a dust concentration detector is arranged near the first sieve plate 5, when the material contacts the reciprocating first sieve plate 5, the powder overflows and is processed by the external centrifugal fan, and when the concentration detector detects that the powder concentration is greatly reduced, indicating that most of the powder has been processed, the driving of the hydraulic cylinder 403 force output end makes one end of the fixed base 401 higher, and the first sieve plate 5 above is inclined, and under the action of gravity, the material enters the first shunt cavity 6, effectively avoiding unnecessary screening time waste, and improving the overall screening efficiency.
[0031] As shown in the embodiment, Figure 2 and Figure 4 As shown, one end of the first filter 8 is higher, one end is lower, and an inclined slope structure is formed between the bottom of the lower end and the bottom of the higher end, and the lower end of the first filter 8 is connected to the first sieve plate 5 and is inserted and connected to the slot of the inner wall of one side of the first shunt cavity 6, and the bottom of the first filter 8 and the bottom of the shelf plate 7 are both provided with filter holes, and the hole diameter of the shelf plate 7 is larger than that of the first filter 8; when the material falls into the first filter 8 under the action of gravity, the inclined structure of the bottom forms an advantageous impact surface with the material falling under the action of gravity, which helps to separate raw materials of different particle sizes, and the large aperture grid on the surface can intercept larger solid particles, preventing these particles from entering the subsequent screening link, and after being filtered by the first filter 8, the effective raw material with small particles falls through the bottom and the inclined structure, and the structure of the shelf plate 7 which is slightly larger than the aperture of the first filter 8 provides better flowability for the raw material.
[0032] As shown in the embodiment, Figure 5 and Figure 6As shown, the sieve frame 1001 is reciprocated by the rotating wheel 1004, and the inner wall of the sieve frame 1001 is provided with the second filter 1005, and the inside of the sieve frame 1001 is slidably connected with the third filter 1006 below the second filter 1005, and there is a certain gap between the third filter 1006 and the second filter 1005, and the outer wall of the sieve frame 1001 is insertedly connected with the rubber plug at the notch corresponding to the outer wall of the third filter 1006, and the surface aperture specification of the third filter 1006 is smaller than that of the second filter 1005; through the reciprocating movement of the sieve frame 1001 and the combined use of the second filter 1005 and the third filter 1006 with different aperture specifications, the material can be more finely screened so as to be used in cooperation with different production processes, for example, when boron carbide with larger particles is required as abrasive material or refractory material, the particle size requirement of the raw material is relatively wide, the third filter 1006 can be removed, the sieve frame 1001 is swung to make the second filter 1005 remove the fine sand and gravel material, and when two kinds of boron carbide raw materials with specific particle size ranges are required to be used in different production links or to meet different performance requirements, the combined use of the second filter 1005 and the third filter 1006 can screen the material into two parts with different particle sizes, so that two kinds of raw materials with different particle sizes are extracted.
[0033] In this embodiment, as shown in Figure 1 and Figure 6 , the guide plate 12 is inclinedly distributed, and the higher end of the guide plate 12 is integrally connected with the open end of the sieve frame 1001, and the lower end of the guide plate 12 is located above the raw material box 13, and the door plate is rotatably connected to the positions corresponding to the first filter 8, the third filter 1006 and the sand box 11 outside the treatment box 1; the inclined distribution of the guide plate 12 can make the material screened by the sieve frame 1001 smoothly slide into the raw material box 13 by gravity, and the door plate provided outside the treatment box 1 improves the convenience for cleaning impurities or extracting screened raw materials.
[0034] The use method and advantages of the utility model are as follows:
[0035] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, first raw materials first enter the upper wide and lower narrow feeding hopper 2 by external conveying equipment, and the raw materials fall on the first sieve plate 5 through the bottom, while the swing block 405 in the first screening assembly 4 is driven to rotate by the servo motor, so that the gravity block 404 moves, and the movement of the gravity block 404 is combined with the elastic action of the spring sleeve connected with the outer wall of the vertical shaft, thereby enhancing the vibration of the movable base 402. When the movable base 402 is stressed, it slides back and forth on the transverse shaft, and the movement of the movable base 402 can drive the first sieve plate 5 to produce a screening motion to move back and forth inside the processing box 1, so that the material is progressively conveyed forward by this reciprocating swing structure. The material is impacted and scattered during the swing of the first sieve plate 5, and the powder mixed in the material is also overflowed at the same time. The dust collection port 14 at both ends of the inner wall of the processing box 1 can suck out the powder and collect it into the dust box 3 under the action of the external centrifugal fan, and the grid-shaped filter structure on the surface of the dust collection port 14 can prevent other materials from being accidentally sucked in. In this process, the dust concentration detector (model JCF-1000) near the first sieve plate 5 can monitor the powder concentration in real time. When the powder concentration is greatly reduced, indicating that most of the powder has been processed, the dust concentration detector will send the detected electrical signal to the external control main body. After receiving the electrical signal, the external control main body will perform corresponding operations according to the preset program. If the powder concentration is lower than the set threshold, the control body can issue an instruction to start the hydraulic oil cylinder 403. When the power output end of the hydraulic oil cylinder 403 contracts, one end of the fixed base 401 is correspondingly raised, thereby making the first sieve plate 5 present an inclined angle, and the material will smoothly enter the first flow separation cavity 6 under the action of gravity. The raw materials entering the first flow separation cavity 6 first fall into the first filter 8, and the bottom inclined structure of the first filter 8 forms an impact surface with the material falling due to gravity, which helps to separate raw materials with different particle sizes. The grid on the surface of the first filter 8 with a large aperture can intercept larger solid particles and stones to prevent them from entering the subsequent screening link. The small particles of the effective raw material fall through the bottom of the first filter 8 and the inclined structure surface and fall onto the second filter 1005 through the structure with a hole diameter slightly larger than that of the first filter 8. The driving pulley 1002 drives the driven pulley 1003 to rotate through the belt, and the driven pulley 1003 drives the rotating wheel 1004 to rotate. The rotation of the rotating wheel 1004 drives the sieve frame 1001 to move back and forth in the second flow separation cavity 9 through the rocker handle. Since the sliding blocks on both sides of the sieve frame 1001 are connected with the sliding grooves in the second flow separation cavity 9 through springs, the sieve frame 1001 can effectively play a buffering and resetting role during reciprocating movement. Under the reciprocating movement of the sieve frame 1001, the small particles of the effective raw material falling on the second filter 1005 are continuously screened and shaken, so that the particles meeting the aperture requirements of the second filter 1005 can smoothly pass through, while the larger particles of the material are intercepted on the second filter 1005 and fall into the raw material box 13 through the flow guide plate 12 in the process of swinging.The raw material passing through the second filter 1005 enters the third filter 1006, the third filter 1006 swings simultaneously with the second filter 1005, further removes the small sand impurities and makes the small sand impurities fall into the sand box 11 below, and finally the first filter 8, the third filter 1006 and the sand box 11 can be classified and extracted through the door plate rotating outside the processing box 1, and when different production links or different performance requirements are met, the second filter 1005 or the combination of the second filter 1005 and the third filter 1006 is selectively used.
[0036] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.
Claims
1. Multistage screening device with easy adjustment, comprising a treatment box (1), characterized in that: The processing box (1) outer wall top is provided with a feeding hopper (2), one side of the feeding hopper (2) is provided with a dust box (3), the dust box (3) is connected to the top of the processing box (1) by bolts, the inside of the processing box (1) is provided with a first screening assembly (4), the top of the first screening assembly (4) is fixedly connected with a first sieve plate (5), the inside of the processing box (1) is provided with a first shunt cavity (6), the first shunt cavity (6) is located at one end of the first sieve plate (5), and the first shunt cavity (6) and the first screening assembly (4) are located at the same horizontal position, the inner wall of the first shunt cavity (6) is provided with a shelf (7), the top of the shelf (7) is connected with a first filter (8), the first filter (8) is located at one end of the first sieve plate (5) and below, the lower portion of the first shunt cavity (6) is provided with a second shunt cavity (9) penetrating therethrough, the inside of the second shunt cavity (9) is provided with a second screening assembly (10), the lower portion of the second screening assembly (10) is provided with a sand box (11), the bottom of the sand box (11) is attached to the inner bottom wall of the processing box (1), one end of the second screening assembly (10) is fixedly connected with a guide plate (12), the lower portion of the guide plate (12) is provided with a raw material box (13), the bottom of the raw material box (13) is at the same horizontal position as the bottom of the sand box (11), and the raw material box (13) is attached to one end of the sand box (11); The first screening assembly (4) is composed of a fixed base (401) and a movable base (402), one end of the fixed base (401) is rotatably connected to the bottom wall inside the processing box (1), the other end of the fixed base (401) is rotatably connected to the power output end of the hydraulic oil cylinder (403) on both sides, the top of the hydraulic oil cylinder (403) is rotatably connected to the inner wall of the processing box (1) on both ends, the bottom of the movable base (402) is slidably connected to the top of the fixed base (401), the outer wall of the movable base (402) is penetrated and movably connected between the two end stands on the surface of the fixed base (401) through the transverse shaft rod formed in the outer wall, and the movable base (402) is movably connected with a gravity block (404) through the vertical shaft rod formed in the inner wall, the outer wall of the gravity block (404) is rotatably connected with a swing block (405) on both ends. The second screening assembly (10) comprises a screening frame (1001), a driving pulley (1002) and a driven pulley (1003), the screening frame (1001) is slidably connected between the inner walls of the second shunt cavity (9) through the sliding blocks formed in the outer walls on both ends, the driving pulley (1002) and the driven pulley (1003) are connected by a belt and rotatably connected to one end of the outer wall of the screening frame (1001), the driven pulley (1003) is integrally connected with a runner (1004) through the shaft rod penetrating the axis, and the outer wall of the runner (1004) is rotatably connected with one end of the outer wall of the screening frame (1001) through a crank.
2. The easily adjustable multi-stage sizing apparatus of claim 1, wherein: The feeding hopper (2) is wide at the top and narrow at the bottom, and the narrow end extends to the inside of the treatment box (1), and a part of the first sieve plate (5) is located below the narrow end of the feeding hopper (2) at a distance, and the dust collection port (14) is provided through the wall of the treatment box (1) at both ends corresponding to the position of the first sieve plate (5), and one end of the dust collection port (14) is provided with a grid-shaped filter structure, and the other end of the dust collection port (14) is connected with the dust box (3) through a pipeline by a centrifugal fan.
3. The easily adjustable multi-stage sizing apparatus of claim 1, wherein: The first sieve plate (5) is a long strip-shaped plate body with a surrounding edge structure on three sides, and the outer wall of the first sieve plate (5) is attached to the inner wall of the treatment box (1) at both ends, and the end of the first sieve plate (5) adjacent to the first shunt cavity (6) is open, and a dust concentration detector is installed at the end of the treatment box (1) corresponding to the first sieve plate (5).
4. The easily adjustable multi-stage sizing apparatus of claim 1, wherein: One end of the fixed base (401) is connected to the hydraulic oil cylinder (403) to form a lifting structure, and the outer wall of the movable base (402) is connected to the fixed base (401) by a spring, and the spring is sleeved on the outer wall of the horizontal shaft, and the spring is sleeved on the outer wall of the vertical shaft provided on the inner wall of the movable base (402) corresponding to the gravity block (404). The swing blocks (405) are coaxially connected, and the movable base (402) forms a swing mechanism between the inner walls of the fixed base (401) through the swing blocks (405).
5. The easily adjustable multi-stage sizing apparatus of claim 1, wherein: One end of the first filter (8) is higher, and the other end is lower, and an inclined slope structure is formed between the bottom of the lower end and the bottom of the higher end, and the lower end of the first filter (8) is connected with the first sieve plate (5) and is inserted into the slot of the inner wall of the first shunt cavity (6) on one side, and the bottom of the first filter (8) and the bottom of the shelf plate (7) are both provided with filter holes, and the hole of the shelf plate (7) is larger than that of the first filter (8).
6. The easily adjustable multi-stage sizing apparatus of claim 1, wherein: The sieve frame (1001) reciprocates through the rotating wheel (1004), and the second filter (1005) is provided in the inner wall of the sieve frame (1001), and the third filter (1006) is slidably connected to the lower part of the second filter (1005) in the inner part of the sieve frame (1001), and the third filter (1006) is spaced apart from the second filter (1005). A rubber plug is inserted and connected at the slot of the outer wall of the third filter (1006) on one side of the outer wall of the sieve frame (1001), and the surface pore size of the third filter (1006) is smaller than that of the second filter (1005).
7. The easily adjustable multi-stage sizing apparatus of claim 1, wherein: The guide vane (12) is inclined, and the higher end of the guide vane (12) is integrally connected with the open end of the sieve frame (1001), and the lower end of the guide vane (12) is located above the raw material box (13), and the door plate is rotatably connected to the positions corresponding to the first filter (8), the third filter (1006) and the gravel box (11) outside the treatment box (1).