Composite screen surface assembly of fine particle roller screen

Abstract

The invention provides a composite screen surface assembly of a fine particle roller screen, which belongs to the field of roller screens, and comprises a rack, the rack is rotatably connected with roller shafts, and the roller shafts are sequentially arranged from left to right; the screening piece assemblies comprise positioning grooves formed in the roller shaft, the screening piece assemblies are arranged at equal intervals from front to back, upper screening pieces are inserted into the upper positioning grooves, lower screening pieces are inserted into the lower positioning grooves, grooves are formed in the front sides and the rear sides of the lower screening pieces correspondingly, and the lower screening pieces are distributed in a bilateral symmetry mode; sheet pressing plates are fixedly connected to the left side and the right side of the bottom of the upper screen piece correspondingly and symmetrically distributed in the front-back direction, guide grooves are formed in the front side and the back side of the upper screen piece correspondingly, and semi-convex rings are slidably connected into the guide grooves. The size of a discharging gap between the screen pieces can be adjusted through the arranged screen piece assembly, the screen pieces and the roller shafts are designed in a split mode, disassembly and position adjustment can be facilitated, and one assembly can conveniently meet the classification requirements of various particle size levels.

Description

Technical Field

[0001] The invention relates to the technical field of roller screens, in particular to a fine particle roller screen composite screen surface assembly. Background Art

[0002] The screen surface of the roller screen is composed of many parallel rollers, on which screen plates are installed in an alternating manner. The rollers are rotated by the transmission of sprockets or gears, and their rotation direction is consistent with the flow direction of the material. The common roller screens on the market are mostly single-layer structures, which can only achieve the classification of two groups of particle size levels during use. However, in the actual production process, it is often necessary to classify specific particle size levels more carefully. Therefore, in order to meet this demand, a fine particle roller screen composite screen surface assembly has appeared on the market, which can achieve the classification of three or more groups of particle size levels.

[0003] The common roller screen equipment on the market currently has a fixed spacing between the screens on the roller. These screens are usually connected to the roller by welding or one-piece molding. This design makes it impossible to adjust the spacing between the screens according to actual needs. In addition, due to the fixed connection between the screen and the roller, it is quite difficult to disassemble the screen. Therefore, this type of roller screen has poor adaptability when it comes to classifying materials of different particle sizes, and cannot flexibly respond to a variety of different classification requirements. In the actual working process, raw materials are easily mixed between the screens. Once the raw materials are stuck between the screens, the number of effective material feeding gaps will be reduced, which will not only reduce the screening speed, but also have a negative impact on the screening effect. Furthermore, the screen surface of this type of roller screen is usually single and lacks the ability of graded screening, so its screening function is relatively limited and cannot meet more complex and sophisticated screening needs.

[0004] Therefore, we propose a fine particle roller screen composite screen surface assembly to solve the above problems. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a fine particle roller screen composite screen surface assembly to solve the problems raised in the above background technology.

[0006] The object of the present invention can be achieved by the following technical solution: comprising a frame, on which rollers are rotatably connected and arranged in sequence from left to right;

[0007] Screen plate assembly. The screen plate assembly includes positioning grooves formed in a roller shaft, which are arranged at equal intervals from front to back. An upper screen plate is inserted into the upper positioning groove, and a lower screen plate is inserted into the lower positioning groove. Grooves are respectively formed on the front and rear sides of the lower screen plate and are symmetrically distributed left and right. Pressing plates are respectively fixedly connected to the left and right sides of the bottom of the upper screen plate and are symmetrically distributed front and rear. Guide grooves are respectively formed on the front and rear sides of the upper screen plate. A semi-convex ring is slidably connected in the guide groove. Cover plates are respectively fixedly connected to the front and rear sides of the upper screen plate. A damping shaft is rotatably connected between two adjacent cover plates. Extrusion wheels are respectively fixedly connected to the outer sides of the front and rear ends of the damping shaft.

[0008] Anti-blocking assembly. The anti-blocking assembly includes sliding grooves formed on the front and rear sides of a frame, which are distributed at equal intervals from left to right. The same lifting rod is slidably connected in the front and rear sliding grooves. Rack bars are respectively fixedly connected to the front and rear sides of the lifting rod. The rack bars are slidably connected to the adjacent sides of the frame. A gear is rotatably connected to the frame on one side of the sliding groove. An arc-shaped toothed plate is also rotatably connected to the frame below the sliding groove. The gear meshes with the adjacent rack bar and arc-shaped toothed plate. A long connecting rod is rotatably connected to the side of the arc-shaped toothed plate away from the rack bar. A small belt pulley is rotatably connected to the frame on one side of the gear. A short connecting rod is fixedly connected to the front end of the small belt pulley. One end of the short connecting rod is rotatably connected to one end of the adjacent long connecting rod. Large belt pulleys are respectively fixedly connected to the outer sides of the front and rear ends of the roller shaft. The same belt is tensioned between the outer sides of the large belt pulley and the diagonally adjacent small belt pulley. Pushing and inserting plates are fixedly connected to the outer side of the lifting rod and are distributed at equal intervals from front to back.

[0009] As a preferred embodiment of the present invention, it further includes a fine screen mesh assembly. The fine screen mesh assembly includes a screen frame arranged in the frame. Guide blocks are respectively fixedly connected to the four corners of the screen frame. Insert slots are respectively formed on the inner walls of the front and rear sides of the frame. The guide blocks are slidably connected to the inner sides of the adjacent insert slots. Springs are fixedly connected to the bottoms of the insert slots. The bottoms of the guide blocks are fixedly connected to the tops of the adjacent springs.

[0010] As a preferred embodiment of the present invention, fixing holes that are symmetrically distributed left and right are respectively formed in the grooves and the pressing plates. Fasteners are arranged in the fixing holes. The upper screen plate and the adjacent lower screen plate are connected by the fasteners.

[0011] As a preferred embodiment of the present invention, a flange is fixedly connected to one end of the semi-convex ring. The size of the guide groove is adapted to the outer contour of the main body of the semi-convex ring.

[0012] As a preferred embodiment of the present invention, the extrusion wheel is an eccentric wheel, and the central axis of the extrusion wheel is not collinear with the central axis of the adjacent damping shaft.

[0013] As a preferred embodiment of the present invention, the sieve plate assemblies on the outer sides of adjacent roller shafts are arranged staggeredly, and the pusher plug is located in the gap between adjacent sieve plate assemblies.

[0014] As a preferred embodiment of the present invention, the maximum length of the pusher plug is less than the axial spacing between adjacent roller shafts, and a convex block is fixedly connected to the bottom of the pusher plug.

[0015] As a preferred embodiment of the present invention, a sieve mesh is arranged in the sieve frame, and the top plane of the sieve frame is parallel to the plane where the axes of multiple roller shafts are located.

[0016] As a preferred embodiment of the present invention, the thickness of the gear is greater than the sum of the thicknesses of the rack and the arc-shaped toothed plate, and the arc-shaped toothed plate and the rack are respectively meshed with different positions of adjacent gears.

[0017] As a preferred embodiment of the present invention, a pressure groove is formed in the middle of the bottom of the pusher plug, and through holes that are symmetric in the front and rear direction and are equally spaced from front to back are formed at corresponding positions on one side of the pusher plug and the lifting rod, and fasteners are arranged in the through holes.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. Through the designed sieve plate assembly, the operator can precisely adjust the size of the blanking gap between the sieve plates. The split design between the sieve plates and the roller shafts makes the disassembly and position adjustment of the entire device more convenient. In this way, a single assembly device can flexibly meet the classification requirements of various different particle size levels, greatly improving the versatility and working efficiency of the device.

[0020] 2. Through the provided anti-blocking assembly, the pusher plug can achieve fixed-point and timed functions at the upper part, and specifically push out and clean the raw materials that may be stuck between the sieve plates. This mechanism effectively avoids production interruption caused by raw material blockage, thus ensuring the smooth progress of the blanking and screening process, significantly improving the screening effect. At the same time, the pusher plug also has an intermittent vibration function at the lower part, which can drive the sieve frame to vibrate. This vibration helps prevent the raw materials on the sieve frame from staying and accumulating for a long time, thereby accelerating the screening effect of the sieve frame and further improving the overall screening speed and screening effect.

[0021] 3. Through the provided fine sieve mesh assembly, the raw materials can be screened at two levels simultaneously, enriching the screening function of the sieve surface assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 is a three-dimensional structure schematic diagram of the present invention;

[0024] Figure 2 is a schematic diagram of another three-dimensional perspective structure of the present invention;

[0025] Figure 3 is a partial three-dimensional structure schematic diagram of the present invention;

[0026] Figure 4 is a partial left view structure schematic diagram of the present invention;

[0027] Figure 5 is a partial enlarged structure schematic diagram of the present invention;

[0028] Figure 6 is Figure 1 an enlarged schematic diagram of part A shown;

[0029] Figure 7 is Figure 2 an enlarged schematic diagram of part B shown;

[0030] Figure 8 is Figure 3 an enlarged schematic diagram of part C shown;

[0031] Figure 9 is Figure 5 an enlarged schematic diagram of part D shown.

[0032] In the figure: 1, frame; 11, chute; 12, lifting rod; 121, pushing and inserting plate; 122, convex block; 13, rack; 14, gear; 15, arc-shaped toothed plate; 16, long connecting rod; 17, small belt pulley; 18, short connecting rod; 19, sieve frame; 191, guiding block; 192, slot; 193, spring; 2, roller shaft; 21, positioning groove; 22, large belt pulley; 23, belt; 3, upper sieve plate; 31, pressing plate; 32, guiding groove; 33, semi-convex ring; 34, cover plate; 35, damping shaft; 36, extrusion wheel; 4, lower sieve plate; 41, groove. Specific embodiments

[0033] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0034] Please refer to Figures 1 - 9As shown in the figure, a fine particle roller screen composite screen surface assembly includes a frame 1, on which roller shafts 2 are rotatably connected and arranged in sequence from left to right. A semi-circular groove that fits the roller shaft 2 is provided on the frame 1 for positioning the roller shaft 2. One end of the roller shaft 2 is connected to the output end of the motor through a coupling and a reducer;

[0035] As an implementation method in this embodiment, a screen plate assembly. The screen plate assembly includes positioning grooves 21 provided on the roller shaft 2 and arranged at equal intervals from front to back. An upper screen plate 3 is inserted into the upper positioning groove 21, and a lower screen plate 4 is inserted into the lower positioning groove 21. Grooves 41 are respectively provided on the front and rear sides of the lower screen plate 4 and are symmetrically distributed left and right. Pressing plates 31 are respectively fixedly connected to the left and right sides of the bottom of the upper screen plate 3 and are symmetrically distributed front and back. Guide grooves 32 are respectively provided on the front and rear sides of the upper screen plate 3. A semi-convex ring 33 is slidably connected in the guide groove 32. Cover plates 34 are respectively fixedly connected to the front and rear sides of the upper screen plate 3. A damping shaft 35 is rotatably connected between two adjacent cover plates 34. Extrusion wheels 36 are fixedly connected to the outer sides of the front and rear ends of the damping shaft 35;

[0036] It should be noted that the function of the positioning groove 21 is to accurately fix the positions of the upper screen plate 3 and the lower screen plate 4 and facilitate the adjustment of the distance between the screen plates. In actual use, in order to ensure that the distances between adjacent upper screen plates 3 are the same, there should be an odd number of positioning grooves 21 between the upper screen plates 3 on adjacent roller shafts 2. Such a design makes the installation and adjustment of the screen plates simpler and faster;

[0037] The function of the groove 41 is to accurately fix the position of the pressing plate 31. By inserting the pressing plate 31 into the corresponding groove 41, the position of the upper screen plate 3 on the lower screen plate 4 can be ensured to be fixed, thereby ensuring the overall stability of the screen plate assembly. The guide groove 32 helps the semi-convex ring 33 to maintain the correct direction when sliding in the upper screen plate 3. In order to prevent the semi-convex ring 33 from sliding out of the guide groove 32, the cover plate 34 is designed to enclose the outside of the semi-convex ring 33. In addition, the width of the semi-convex ring 33 can be adjusted to help adjust the distance between adjacent screen plates to achieve a more refined adjustment;

[0038] In order to increase the friction of the rotating damping shaft 35, holes are drilled in the cover plate 34. Through the interference fit between the damping shaft 35 and the holes, the friction required for rotating the damping shaft 35 is increased. When the extrusion wheel 36 rotates with the damping shaft 35, the friction on the semi-convex ring 33 is increased by extruding one side of the semi-convex ring 33, ensuring the magnitude of the friction required when pushing or pulling out the semi-convex ring 33, so as to ensure that the width of the semi-convex ring 33 extending out of the upper screen plate 3 is difficult to change and ensure the stability after adjustment;

[0039] Through the design of this sieve plate assembly, we can flexibly adjust the size of the material discharging gap between the sieve plates to meet different classification requirements. The split design between the sieve plate and the roller shaft 2 makes the disassembly and adjustment of the sieve plate very convenient, enabling this sieve plate assembly to handle classification requirements for multiple particle size levels, greatly improving the applicability and flexibility of the equipment.

[0040] As an implementation method in this embodiment, an anti-blocking component, the anti-blocking component includes sliding grooves 11 opened on the front and rear sides of the frame 1, and are equally spaced from left to right. The same lifting rod 12 is slidably connected in the front and rear two sliding grooves 11. Both the front and rear sides of the lifting rod 12 are fixedly connected with racks 13, and the racks 13 are slidably connected to the adjacent sides of the frame 1. A gear 14 is rotatably connected to the frame 1 on one side of the sliding groove 11. An arc-shaped toothed plate 15 is also rotatably connected to the frame 1 below the sliding groove 11. The gear 14 meshes with the adjacent rack 13 and the arc-shaped toothed plate 15. A long connecting rod 16 is rotatably connected to the side of the arc-shaped toothed plate 15 away from the rack 13. A small pulley 17 is rotatably connected to the frame 1 on one side of the gear 14. A short connecting rod 18 is fixedly connected to the front end of the small pulley 17. One end of the short connecting rod 18 is rotatably connected to one end of the adjacent long connecting rod 16. Large pulleys 22 are fixedly connected to the outer sides of the front and rear ends of the roller shaft 2. The same belt 23 is tensioned between the outer sides of the large pulley 22 and the diagonally adjacent small pulley 17. A pushing plate 121 is fixedly connected to the outer side of the lifting rod 12, and is equally spaced from front to back.

[0041] It should be noted that the design purpose of the sliding groove 11 is to precisely guide the lifting rod 12. During the up and down movement of the lifting rod 12, it can effectively drive a plurality of pushing plates 121 to move up and down. This design enables the equipment to simultaneously push out the screening raw materials stuck in multiple gaps, thus avoiding the blockage of the roller screen. In this way, the entire screening process becomes smoother, greatly improving the operating efficiency of the equipment.

[0042] The large pulley 22, the small pulley 17 and the belt 23 together form an efficient small transmission structure. When the roller shaft 2 rotates, this transmission structure can respond quickly and drive the shaft inside the small pulley 17 to rotate. As the small pulley 17 rotates, the short connecting rod 18 will also rotate accordingly. During the rotation of the short connecting rod 18, it will pull the long connecting rod 16, causing it to start rotating. The rotation of the long connecting rod 16 will then pull the arc-shaped toothed plate 15 to rotate. The arc-shaped toothed plate 15 meshes with the intermediate structure gear 14 to further drive the rack 13 to move linearly. The movement of the rack 13 will drive the lifting rod 12 to move up and down, thus realizing the synchronous movement of the roller shaft 2 and the lifting rod 12. This synchronous movement ensures the coordination and stability of the equipment, improving the overall working efficiency.

[0043] By setting the above-mentioned anti-blocking components, the pusher plate 121 can push out the raw materials stuck between the screen plates at a fixed point and at a fixed time on the upper part, effectively avoiding the occurrence of blocking, thereby avoiding the impact on the screening effect of the material. At the bottom, the pusher plate 121 can also intermittently drive the screen frame 19 to vibrate, avoiding the retention of raw materials on the screen frame 19 and speeding up the screening effect of the screen frame 19. This design not only improves the screening speed, but also significantly improves the screening effect, making the entire screening process more efficient and accurate.

[0044] As an implementation mode in this embodiment, it also includes a fine screen assembly, which includes a screen frame 19 arranged in the frame 1, and the four corners of the screen frame 19 are fixedly connected with guide blocks 191, and the inner walls on the front and rear sides of the frame 1 are provided with slots 192, and the guide blocks 191 are slidably connected to the inner sides of adjacent slots 192, and the bottom of the slots 192 is fixedly connected with springs 193, and the bottom of the guide blocks 191 is fixedly connected to the top of the adjacent springs 193.

[0045] It should be noted that the screen frame 19 is designed to firmly fix the screen. In order to ensure that the screen frame 19 can be accurately installed and fixed in the frame 1, the guide block 191 is accurately positioned through the slot 192 thereon. This design enables the screen frame 19 to be firmly locked in place, ensuring the stability of the screen during operation. In addition, the spring 193 is placed at the bottom of the guide block 191, and its main function is to provide the necessary space and possibility for the up and down vibration of the screen. Such a design allows the bottom of the pusher plate 121 to squeeze and push the screen frame 19 downward when it is lowered to the lowest point, thereby compressing the spring 193. When the pusher plate 121 rises, the elastic force of the spring 193 will cause the screen frame 19 to reset and generate vibrations in the up and down directions. This vibration is crucial for the raw materials on the surface of the screen because it can effectively shake the raw materials, prevent the screen holes from being blocked, and speed up the screening and unloading speed of the raw materials. In addition, through the carefully designed fine screen assembly, two-stage screening of raw materials can be achieved, which not only improves the screening efficiency, but also enriches the screening function of the screen surface assembly, enabling it to handle a wider variety of raw materials.

[0046] Both the groove 41 and the pressing plate 31 are provided with left-right symmetrical fixing holes, and fasteners are provided in the fixing holes. The upper screen 3 and the adjacent lower screen 4 are connected by the fasteners. By using the fasteners to achieve the connection, the upper screen 3 and the lower screen 4 can be easily separated by simply removing the fasteners when necessary. Such a design not only makes it possible to remove the screen on the roller shaft 2, but also greatly improves the convenience of operation.

[0047] One end of the semi-convex ring 33 is fixedly connected with a flange. The size of the guide groove 32 is adapted to the outer contour of the main body of the semi-convex ring 33. The design of the flange allows the semi-convex ring 33 to perform a limited sliding movement within the guide groove 32, and its size is larger than that of the guide groove 32, ensuring that the semi-convex ring 33 cannot break away from the guide groove 32 after the cover plate 34 is installed. This design mechanism greatly improves the stability of the entire assembly after completion, effectively preventing the accidental detachment of structural components, thereby ensuring the reliability and safety of the equipment.

[0048] The extrusion wheel 36 is an eccentric wheel. The central axis of the extrusion wheel 36 is not collinear with the central axis of the adjacent damping shaft 35. The design of the extrusion wheel 36 adopts the eccentric principle. Such a design enables it to exhibit two different working states during the rotation along with the damping shaft 35. In the first state, the outer wall of the extrusion wheel 36 will be in close contact with the semi-convex ring 33 and apply pressure, thereby realizing the locking function of the semi-convex ring 33; while in the second state, the outer wall of the extrusion wheel 36 will be separated from the semi-convex ring 33 and no longer apply pressure. This separation state provides convenience for the operator, enabling them to easily adjust the protruding width of the semi-convex ring 33 relative to the upper sieve plate 3. In this way, the distance between the sieve plates can be further finely adjusted, thereby realizing the precise control of the outer diameter of the raw material screening.

[0049] The sieve plate assemblies on the outer sides of the adjacent roller shafts 2 are arranged staggeredly. The pushing plate 121 is located in the gap between the adjacent sieve plate assemblies. When the pushing plate 121 moves to the lowest point, it will not block the screening raw material from falling through the gap, and when it moves to the highest point, it will push the raw material stuck in the gap upward, enabling it to continue to move along the rolling direction of the sieve plate, ensuring the normal screening function of the sieve plate.

[0050] The maximum length of the pushing plate 121 is less than the axial distance between the adjacent roller shafts 2. The bottom of the pushing plate 121 is fixedly connected with a convex block 122. Limiting the length of the pushing plate 121 can facilitate its movement within the gap of the roller shaft 2 while avoiding interference with the rotating roller shaft 2 and the sieve plate. The convex block 122 is used to contact the sieve frame 19 when the pushing plate 121 descends, causing the sieve frame 19 to vibrate, enabling the pushing plate 121 to achieve two functions and streamlining the number of structural components.

[0051] A sieve mesh is arranged inside the sieve frame 19. The top plane of the sieve frame 19 is parallel to the plane where the axes of the multiple roller shafts 2 are located. Both the sieve frame 19 and the plane where the axes of the roller shafts 2 are located are inclined with respect to the ground, used to make the raw material to be screened move to one side under the action of gravity, facilitating the blanking.

[0052] The thickness of the gear 14 is greater than the sum of the thicknesses of the rack 13 and the arc-shaped tooth plate 15. The arc-shaped tooth plate 15 and the rack 13 are respectively engaged with different positions of the adjacent gears 14. The gear 14 is relatively thick. In order to enable it to be engaged with the rack 13 and the arc-shaped tooth plate 15 simultaneously, and the arc-shaped tooth plate 15 and the rack 13 are in different spaces to avoid interference between the arc-shaped tooth plate 15 and the rack 13 during the movement process, so as to ensure the feasibility of the structure operation.

[0053] A pressing groove is provided at the middle of the bottom of the material pushing plug plate 121. Through holes that are symmetrically distributed front and back and equally spaced from front to back are provided at corresponding positions on one side of the material pushing plug plate 121 and the lifting rod 12. Fasteners are arranged in the through holes. The material pushing plug plate 121 can be inserted outside the lifting rod 12 through the pressing groove, and at the same time, the material pushing plug plate 121 can be connected to the lifting rod 12 by passing the fasteners through the through holes. This design ensures the stability of the material pushing plug plate 121 during normal connection, and also facilitates the disassembly operation of the material pushing plug plate 121.

[0054] When the present invention is specifically used, first assemble and connect this assembly with the remaining components of the roller screen, and connect the device to an external power supply. Then, feed the material. The motor is controlled by a controller to work. Multiple motors drive multiple roller shafts 2 to rotate. When the roller shafts 2 rotate, the sieve plates on their outer sides are driven to rotate, and the falling raw materials are screened. The raw materials smaller than the gap of the sieve plate will fall through the gap of the sieve plate onto the screen mesh, and the raw materials smaller than the aperture of the screen mesh will further pass through the screen mesh and fall, thereby realizing three different landing points of raw materials with three different particle size ranges during the screening process. During the operation of this assembly, when the roller shaft 2 rotates, it drives the belt 23 to move through the large pulley 22. When the belt 23 moves, it drives the small pulley 17 to rotate. When the small pulley 17 rotates, it drives the short connecting rod 18 to rotate. The short connecting rod 18 further pulls the long connecting rod 16 to rotate. The long connecting rod 16 pulls the arc-shaped tooth plate 15 to rotate through the pin shaft on the arc-shaped tooth plate 15. When the arc-shaped tooth plate 15 rotates, it drives the rack 13 to move through meshing with the gear 14. When the rack 13 moves, it drives the lifting rod 12 to make reciprocating lifting movements in the sliding groove 11. When the lifting rod 12 moves upward, it ejects the raw materials in the gap of the sieve plate through the pushing plate 121 on its outer side to prevent them from getting stuck in the gap. When the lifting rod 12 moves downward, the convex block 122 at its bottom contacts and presses the screen frame 19, causing the guide block 191 to compress the spring 193 below, so that the spring 193 stores elastic force. After the lifting rod 12 rises, under the elastic force of the spring 193, the screen frame 19 will drive the screen mesh to bounce upward and vibrate, accelerating the screening and falling of the raw materials on the surface of the screen mesh. When it is necessary to adjust the gap of the sieve plate, use tools to remove the connecting fasteners between the upper sieve plate 3 and the lower sieve plate 4 to separate them. After the disassembly is completed, reinstall the upper sieve plate 3 and the lower sieve plate 4 in the corresponding positioning grooves 21 as required. At the same time, according to the screening particle accuracy requirements of the raw materials, rotate the damping shaft 35 so that the pressing wheel 36 on its outer side no longer presses the semi-convex ring 33, pull the semi-convex ring 33 to make it extend an appropriate length, and then rotate the damping shaft 35 again so that the pressing wheel 36 on its outer side presses the semi-convex ring 33 again to fix its extended length. At the same time, since the distance between the sieve plates changes, the position of the pushing plate 121 on the lifting rod 12 also needs to be adjusted. Use tools to remove the fasteners on the pushing plate 121, place it in the corresponding position again, and then reinstall the fasteners to fix the position of the pushing plate 121 on the lifting rod 12. After completing this series of operations, the adjustment of the sieve plate gap can be completed from left to right.

[0055] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments only. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A fine particle roller screen composite screen surface assembly, characterized in that, Comprising: A frame (1) with roller shafts (2) rotatably connected thereto and arranged in sequence from left to right; A sieve plate assembly, the sieve plate assembly including positioning grooves (21) formed in the roller shafts (2) and arranged at equal intervals from front to back. An upper sieve plate (3) is inserted into the upper positioning grooves (21), and a lower sieve plate (4) is inserted into the lower positioning grooves (21). Grooves (41) are respectively formed on the front and rear sides of the lower sieve plate (4) and are symmetrically distributed left and right. Pressing plate plates (31) are respectively fixedly connected to the left and right sides of the bottom of the upper sieve plate (3) and are symmetrically distributed front and back. Guide grooves (32) are respectively formed on the front and rear sides of the upper sieve plate (3). Semi-convex rings (33) are slidably connected in the guide grooves (32). Cover plates (34) are respectively fixedly connected to the front and rear sides of the upper sieve plate (3). A damping shaft (35) is rotatably connected between two adjacent cover plates (34). Extrusion wheels (36) are respectively fixedly connected to the outer sides of the front and rear ends of the damping shaft (35); An anti-blocking assembly, the anti-blocking assembly including sliding grooves (11) formed on the front and rear sides of the frame (1) and distributed at equal intervals from left to right. The same lifting rod (12) is slidably connected in the front and rear two sliding grooves (11). Rack bars (13) are respectively fixedly connected to the front and rear sides of the lifting rod (12). The rack bars (13) are slidably connected to the adjacent sides of the frame (1). A gear (14) is rotatably connected to the frame (1) on one side of the sliding groove (11). An arc-shaped toothed plate (15) is also rotatably connected to the frame (1) below the sliding groove (11). The gear (14) meshes with the adjacent rack bar (13) and the arc-shaped toothed plate (15). A long connecting rod (16) is rotatably connected to the side of the arc-shaped toothed plate (15) away from the rack bar (13). A small pulley (17) is rotatably connected to the frame (1) on one side of the gear (14). A short connecting rod (18) is fixedly connected to the front end of the small pulley (17). One end of the short connecting rod (18) is rotatably connected to one end of the adjacent long connecting rod (16). Large pulleys (22) are respectively fixedly connected to the outer sides of the front and rear ends of the roller shaft (2). The same belt (23) is tensioned between the outer sides of the large pulley (22) and the diagonally adjacent small pulley (17). A pushing material inserting plate (121) is fixedly connected to the outer side of the lifting rod (12) and is distributed at equal intervals from front to back.

2. The composite screen surface assembly of a fine particle roller screen according to claim 1, characterized in that, It further includes a fine sieve mesh assembly. The fine sieve mesh assembly includes a sieve frame (19) arranged in the frame (1). Guide blocks (191) are respectively fixedly connected to the four corners of the sieve frame (19). Slots (192) are respectively formed on the inner walls of the front and rear sides of the frame (1). The guide blocks (191) are slidably connected to the inner sides of the adjacent slots (192). Springs (193) are fixedly connected to the bottoms of the slots (192). The bottoms of the guide blocks (191) are fixedly connected to the tops of the adjacent springs (193).

3. The composite screen surface assembly of a fine particle roller screen according to claim 2, characterized in that, Both the groove (41) and the tablet pressing plate (31) are provided with symmetrically arranged fixing holes on the left and right, and fasteners are arranged in the fixing holes. The upper sieve plate (3) and the adjacent lower sieve plate (4) are connected by fasteners.

4. A fine particle roller screen composite screen surface assembly according to claim 3, characterized in that, One end of the semi-convex ring (33) is fixedly connected with a flange edge, and the size of the guiding groove (32) is adapted to the outer contour of the main body of the semi-convex ring (33).

5. A fine particle roller screen composite screen surface assembly according to claim 4, characterized in that, The extrusion wheel (36) is an eccentric wheel, and the central axis of the extrusion wheel (36) is not collinear with the central axis of the adjacent damping shaft (35).

6. The composite screen surface assembly of a fine particle roller screen according to claim 5, characterized in that, The sieve plate assemblies on the outer sides of the adjacent roller shafts (2) are arranged staggeredly, and the material pushing plug board (121) is located in the gap between the adjacent sieve plate assemblies.

7. A fine particle roller screen composite screen surface assembly according to claim 6, characterized in that The maximum length of the material pushing plug board (121) is less than the axial spacing of the adjacent roller shafts (2), and a convex block (122) is fixedly connected to the bottom of the material pushing plug board (121).

8. A fine particle roller screen composite screen surface assembly according to claim 7, characterized in that A sieve mesh is arranged in the sieve frame (19), and the top plane of the sieve frame (19) is parallel to the plane where the axes of the plurality of roller shafts (2) are located.

9. A fine particle roller screen composite screen surface assembly according to claim 8, characterized in that, The thickness of the gear (14) is greater than the sum of the thicknesses of the rack (13) and the arc-shaped tooth plate (15), and the arc-shaped tooth plate (15) and the rack (13) are respectively meshed with different positions of the adjacent gear (14).

10. A fine particle roller screen composite screen surface assembly according to claim 9, characterized in that, A pressing groove is formed in the middle of the bottom of the material pushing plug board (121), and through holes that are symmetrically arranged front and back and are equally spaced from front to back are formed at corresponding positions on one side of the material pushing plug board (121) and the lifting rod (12), and fasteners are arranged in the through holes.

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