CN112517169A

CN112517169A - Secondary processing classified screening equipment is smashed to small-size timber

Info

Publication number: CN112517169A
Application number: CN202011278810.5A
Authority: CN
Inventors: 陈志高
Original assignee: Taojiang Dejurenhe Sme Public Service Platform Co ltd
Current assignee: Taojiang Dejurenhe Sme Public Service Platform Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-03-19

Abstract

The invention discloses small-size wood smashing and secondary processing grading and screening equipment which comprises a first box body, wherein a smashing box is installed at the top of the first box body, a smashing mechanism is arranged in an inner cavity of the smashing box, screening equipment is arranged in the inner cavity of the first box body, the screening equipment comprises a screening plate which is connected to the bottom of the inner cavity of the first box body in a sliding mode, a fixing plate is fixedly connected to the left side of the screening plate, tension springs are welded to the front end and the rear end of the left side of the fixing plate, and the left end of each tension spring is welded to the inner wall of the first box body. According to the invention, materials are processed and crushed by matching the crushing box and the crushing mechanism, then the materials are screened by matching the box body I and the screening equipment, the materials which do not meet the requirements of a user are subjected to secondary return transportation and processing by setting the transfer mechanism, and finally the finished materials are conveyed by setting the conveying mechanism, so that the purposes of thorough crushing, secondary processing and one-time finishing can be achieved.

Description

Secondary processing classified screening equipment is smashed to small-size timber

Technical Field

The invention relates to the technical field of wood processing, in particular to a small-size wood crushing secondary processing grading screening device.

Background

Wood is lignified tissue formed by secondary growth plants, such as trees and shrubs, and after primary growth of the plants is finished, a fiber-forming layer in the rhizome starts to move, so that bast is developed outwards, wood is developed inwards, and the wood needs to be crushed during processing in order to meet processing requirements.

The application number 201310655342.2 provides a cotton stalk secondary crushing machine, which comprises an upper shell, a lower shell, a feeding device, a main shaft, a fan assembly, a primary crushing mechanism and a secondary crushing mechanism, wherein the secondary crushing mechanism is arranged on two sides of the primary crushing mechanism; the primary crushing mechanism consists of a hammer cutter assembly and a bottom plate fixed cutter, the hammer cutter assembly is spirally distributed on the outer wall of the main shaft, the bottom plate fixed cutter is arranged in the middle of the surface of the inner wall of the lower shell, and the hammer cutter assembly and the bottom plate fixed cutter interact with each other to realize primary crushing of materials; the secondary crushing mechanism is composed of a hammer component and a fixed cutter component, the hammer component corresponds to the fixed cutter component in position, the hammer component is distributed on the outer wall of the main shaft in the circumferential direction, the fixed cutter component is composed of a plurality of rows of fixed cutters which are respectively installed on the inner walls of the upper shell and the lower shell, and the hammer component and the fixed cutter component interact with each other to realize secondary crushing of materials. The invention can crush cotton stalk twice, so that the particle size of the crushed cotton stalk can meet the processing requirement of biomass briquetting;

for another example: application number 200610012959.2 provides a dual-purpose rubbing crusher suitable for rubber junked radial tire and timber, has solved among the prior art recovery of rubber junked radial tire and has smashed the power consumption big, and output is low, and papermaking pulping aggravates environmental pollution scheduling problem because of timber is smashed not in place. The invention is characterized in that three groups of blade alloy rollers are arranged, namely a powder blade combined roller, a two-powder blade combined roller and a material cleaning blade combined roller, each blade combined roller is formed by installing a plurality of alloy blades on a rotating shaft of the combined roller, and a spacing gasket is arranged between every two adjacent blades. The invention has the beneficial effects that: 1. the adaptability is strong, coarse materials and fine materials can be discharged at one time, and the screen does not need to be circularly cleaned; 2. the yield is high, energy and electricity are saved, the use cost is low, and the service life of the equipment is long; 3. the environment is protected, and the environment is not polluted; 4. the crushed material has high quality and does not influence the performance.

The two is all through setting up two sets of rubbing crusher structures, smash the material, make the material can reach better crushing state, but set up two sets of rubbing crusher structures and can't guarantee that ejection of compact state can reach user's anticipated effect, the secondary operation of continuity, still there is probably to have the material that crushing effect does not reach expectation, and the secondary crushing of continuity, make the material that the primary processing was accomplished still need receive secondary operation, this moment, make the material that the primary processing was accomplished occupy a part secondary operation's crushing space, lead to the ejection of compact slower, even because there is the difference in material quality volume, can lead to the phenomenon of machine jam to take place.

Based on the above, the invention provides a small-size wood crushing secondary processing grading screening device, which is used for solving the problems.

Disclosure of Invention

The invention aims to provide small-size wood smashing secondary processing grading screening equipment which has the advantages of thorough smashing, secondary processing and one-time completion, and solves the problems that the function is single, after screening, no transfer equipment is used for conveying the small-size wood smashing secondary processing grading screening equipment back to processing equipment for secondary processing, a user needs to return to the processing equipment through manpower, a large amount of manpower and material resources are consumed by the user, the existing secondary processing equipment generally achieves the purpose of secondary processing through adding processing equipment, the production cost is increased, the secondary processing equipment is not provided with screening equipment, and materials need to be processed again.

In order to achieve the purpose, the invention provides the following technical scheme: a small-size wood smashing and secondary processing grading and screening device comprises a box body I, a smashing box is installed at the top of the box body I, a smashing mechanism is arranged in an inner cavity of the smashing box, a screening device is arranged in an inner cavity of the box body I, the screening device comprises a screening plate which is connected to the bottom of the inner cavity of the box body I in a sliding mode, a fixing plate is fixedly connected to the left side of the screening plate, tension springs are welded to the front end and the rear end of the left side of the fixing plate, the left end of each tension spring is welded to the inner wall of the box body I, a motor II is installed on the left side of the bottom of the box body I, an output shaft of the motor II penetrates through the inner cavity of the box body I and is fixedly connected with a roller frame, a transfer mechanism is arranged on the right side of the box body I and comprises a box body II fixedly connected to the, an output shaft of the motor III penetrates through an inner cavity of the box II, the bottoms of two sides of the conveying box are rotatably connected with rotating columns II, conveying belts are sleeved on the surfaces of the two rotating columns II, and a conveying mechanism is arranged at the bottom of the box I.

Preferably, rubbing crusher constructs including installing the motor one at crushing roof portion, the output shaft of motor one runs through to the inner chamber and the fixedly connected with rotation post one of crushing case, the bottom fixedly connected with backup pad of crushing case, the bottom of rotating post one is passed through the bearing and is rotated with the backup pad and be connected, the annular welding in surface of rotating post one has a plurality of crushing blades.

Preferably, the two sides of the bottom of the inner cavity of the roller frame are rotatably connected with rollers, and the surfaces of the rollers are in rolling connection with the left side of the fixing plate.

Preferably, conveying mechanism is including the conveyer pipe that is located box bottom, the left side intercommunication at conveyer pipe top has the connecting pipe, motor four is installed in the left side of conveyer pipe, the output shaft of motor four runs through inner chamber and the fixedly connected with screw thread catch bar to the conveyer pipe, the right side fixedly connected with fixed block at conveyer pipe inner chamber top, the right-hand member of screw thread catch bar passes through the bearing and is connected with the fixed block rotation.

Preferably, the bottom of the first box body is communicated with a blanking box, and the bottom of the blanking box is communicated with the connecting pipe.

Preferably, both sides of a bottom of the box body are fixedly connected with supporting frames.

Preferably, smash the left top fixedly connected with inlet pipe of case, the inlet pipe communicates with crushing case mutually, smash the front side fixedly connected with return pipe of case, return pipe communicates with crushing case mutually, the blanking mouth has been seted up to the bottom of smashing the case, the blanking mouth is linked together with box one.

Preferably, the front end and the rear end of two sides of the bottom of an inner cavity of the box body are fixedly connected with limiting blocks, and two limiting grooves matched with the limiting blocks are formed in two sides of the bottom of the screening plate.

Preferably, a feeding cavity is arranged at the bottom of the inner cavity of the second box body, and the top of the feeding cavity is an inclined plane with a front bottom and a rear height.

Preferably, the surface of the conveying belt is connected with a plurality of anti-skidding support bottoms through bolts, and the inner cavity of each anti-skidding support bottom is provided with an arc shape.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention processes and crushes the materials by the matching use of the crushing box and the crushing mechanism, then screens the materials by the matching use of the box body I and the screening equipment, and secondarily transports and processes the materials which do not reach the requirements of the user by the arrangement of the transfer mechanism, and finally transports the finished materials by the arrangement of the transport mechanism, thereby achieving the purposes of thorough crushing, secondary processing and one-time completion, the small-size wood crushing secondary processing grading screening equipment solves the problems of single function, no transfer equipment sends the materials back to the processing equipment for secondary processing after screening, and the users need to transport the materials back by manpower, which consumes a large amount of manpower and material resources of the users, the existing secondary processing equipment generally realizes the purpose of secondary processing by adding the processing equipment, thereby improving the production cost, and the secondary processing equipment is not provided with screening equipment, so that the problem that materials need to be processed again still exists.

2. The invention avoids the direct contact between the roller carrier and the fixed plate through the arrangement of the rollers, greatly reduces the abrasion to the fixed plate, ensures that the materials in the crushing box can be conveyed towards the right side through the arrangement of the conveying mechanism, and is convenient for a user to collect and store the finished materials through the matching use of the conveying pipe and the thread pushing rod, accelerates the downward moving speed of the materials in the inner cavity of the box body through the arrangement of the blanking box through the shape arrangement of the blanking box, simultaneously avoids the accumulation of the materials in the inner cavity of the box body, transfers the materials which are conveyed by the inner cavity of the conveying box and need secondary processing through the arrangement of the material returning pipe, and ensures that the materials enter the inner cavity of the crushing box again for processing, plays the role of limiting and guiding on the screening plate through the matching use of the limiting block and the limiting groove, and improves the stability of the screening plate in the movement process, through the setting of pay-off cavity for the material in the two inner chambers of box gets into the inner chamber of transport case fast, transports, holds in the palm the setting at the bottom through antiskid, makes the syncline top that the material on conveyer belt surface can be stable carry, has avoided the phenomenon of material landing to take place.

Drawings

FIG. 1 is a perspective view of the structure of the present invention;

FIG. 2 is a schematic perspective view of the grinding bin and grinding mechanism of the present invention;

FIG. 3 is a schematic perspective cross-sectional view of a first box and a screening apparatus of the present invention;

FIG. 4 is a schematic perspective exploded view of a first box and a screening apparatus according to the present invention;

FIG. 5 is a schematic perspective cross-sectional view of a transfer mechanism of the present invention;

FIG. 6 is an enlarged view of a portion of the point A of FIG. 5 according to the present invention;

fig. 7 is a schematic perspective cross-sectional view of the conveying mechanism of the present invention.

In the figure: 1. a first box body; 2. a crushing box; 3. a crushing mechanism; 31. a first motor; 32. rotating the column; 33. a crushing blade; 34. a support plate; 4. screening equipment; 41. a screening plate; 42. a fixing plate; 43. a tension spring; 44. a second motor; 45. a roller frame; 46. a roller; 5. a transfer mechanism; 51. a second box body; 52. a delivery box; 53. a third motor; 54. rotating the column; 55. a conveyor belt; 6. a conveying mechanism; 61. a delivery pipe; 62. a connecting pipe; 63. a fourth motor; 64. a threaded push rod; 65. a fixed block; 7. a support frame; 8. a feed pipe; 9. a material returning pipe; 10. a blanking port; 11. a limiting block; 12. a limiting groove; 13. blanking the material box; 14. a feeding cavity; 15. the antiskid holds in the palm the end.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The first embodiment is as follows:

referring to fig. 1-7, the present invention provides a technical solution: a small-size wood smashing secondary processing grading screening device comprises a box body I1, a smashing box 2 is installed at the top of the box body I1, a smashing mechanism 3 is arranged in an inner cavity of the smashing box 2, a screening device 4 is arranged in the inner cavity of the box body I1, the screening device 4 comprises a screening plate 41 which is connected to the bottom of the inner cavity of the box body I1 in a sliding mode, a fixing plate 42 is fixedly connected to the left side of the screening plate 41, tension springs 43 are welded to the front end and the rear end of the left side of the fixing plate 42, the left end of each tension spring 43 is welded to the inner wall of the box body I1, a motor II 44 is installed on the left side of the bottom of the box body I1, an output shaft of each motor II 44 penetrates through the inner cavity of the box body I1 and is fixedly connected with a roller frame 45, a transfer mechanism 5 is arranged on the right, the front surface of the second box body 51 is provided with a third motor 53, an output shaft of the third motor 53 penetrates through the inner cavity of the second box body 51, the bottoms of two sides of the conveying box 52 are rotatably connected with a second rotating column 54, the surfaces of the two second rotating columns 54 are sleeved with a conveying belt 55, and the bottom of the first box body 1 is provided with a conveying mechanism 6.

Through the setting of transport mechanism 5, send back the processing position to the material that does not reach the expected processing effect of user, carry out secondary operation, use under screening installation 4's cooperation simultaneously, strictly be close to material processing effect, ensure that the material finished product of final ejection of compact can process to user's expected processing effect.

As a preferable embodiment of the present embodiment: referring to fig. 2, the crushing mechanism 3 includes a first motor 31 installed at the top of the crushing box 2, an output shaft of the first motor 31 penetrates through an inner cavity of the crushing box 2 and is fixedly connected with a first rotating column 32, a supporting plate 34 is fixedly connected to the bottom of the crushing box 2, the bottom of the first rotating column 32 is rotatably connected with the supporting plate 34 through a bearing, and a plurality of crushing blades 33 are annularly welded on the surface of the first rotating column 32.

As a preferable embodiment of the present embodiment: referring to fig. 3, the rollers 46 are rotatably connected to both sides of the bottom of the inner cavity of the roller frame 45, the surface of the roller 46 is in rolling connection with the left side of the fixing plate 42, and the rollers 46 are arranged to prevent the roller frame 45 from directly contacting the fixing plate 42, thereby greatly reducing the abrasion to the fixing plate 42.

As a preferable embodiment of the present embodiment: referring to fig. 7, conveying mechanism 6 is including the conveyer pipe 61 that is located 1 bottom of box, the left side intercommunication at conveyer pipe 61 top has connecting pipe 62, four 63 of motor are installed to the left side of conveyer pipe 61, four 63's of motor output shaft runs through to conveyer pipe 61's inner chamber and fixedly connected with screw catch bar 64, the right side fixedly connected with fixed block 65 at conveyer pipe 61 inner chamber top, the right-hand member of screw catch bar 64 passes through the bearing and is connected with fixed block 65 rotation, setting through conveying mechanism 6, wherein conveyer pipe 61 and screw catch bar 64's cooperation is used, make the inside material of crushing case 2 can be carried to the right side, made things convenient for the user to collect the storage to the completion material.

Example two:

As a preferable embodiment of the present embodiment: referring to fig. 4, the bottom of the first box 1 is communicated with the blanking box 13, the bottom of the blanking box 13 is communicated with the connecting pipe 62, and the shape of the blanking box 13 is set by the arrangement of the blanking box 13, so that the downward movement speed of the material in the inner cavity of the first box 1 is increased, and meanwhile, the situation that the material is accumulated in the inner cavity of the first box 1 is avoided.

As a preferable embodiment of the present embodiment: referring to fig. 1, two sides of the bottom of the first box body 1 are fixedly connected with supporting frames 7.

As a preferable embodiment of the present embodiment: referring to fig. 1 and 2, smash left top fixedly connected with inlet pipe 8 of case 2, inlet pipe 8 is linked together with crushing case 2, smash the front side fixedly connected with return pipe 9 of case 2, return pipe 9 is linked together with crushing case 2, smash the bottom of case 2 and seted up blanking mouth 10, blanking mouth 10 is linked together with box 1, setting through return pipe 9, the needs reprocessed material that carries to transport case 52 inner chamber is transported, make its inner chamber that gets into crushing case 2 again process.

As a preferable embodiment of the present embodiment: referring to fig. 4, the front end and the rear end of the two sides of the bottom of the inner cavity of the first box body 1 are fixedly connected with limiting blocks 11, two limiting grooves 12 matched with the limiting blocks 11 are formed in the two sides of the bottom of the screening plate 41, the limiting blocks 11 and the limiting grooves 12 are used in a matched mode, the screening plate 41 is limited and guided, and the stability of the screening plate 41 in the motion process is improved.

As a preferable embodiment of the present embodiment: referring to fig. 5, the feeding cavity 14 is arranged at the bottom of the inner cavity of the second box body 51, the top of the feeding cavity 14 is an inclined plane with a front bottom and a rear high, and the material in the inner cavity of the second box body 51 can rapidly enter the inner cavity of the conveying box 52 for transportation through the arrangement of the feeding cavity 14.

As a preferable embodiment of the present embodiment: referring to fig. 6, the surface of the conveying belt 55 is connected with a plurality of anti-skid support bottoms 15 through bolts, the inner cavity of each anti-skid support bottom 15 is provided with an arc shape, and materials on the surface of the conveying belt 55 can be stably conveyed obliquely upwards through the arrangement of the anti-skid support bottoms 15, so that the phenomenon that the materials slide down is avoided.

The working principle is as follows: when the invention is used, a user conveys materials to be processed to the inner cavity of the crushing box 2 through the feeding pipe 8, at the moment, the motor I31 drives the crushing blade 33 to rotate through the rotating column I32, so that the materials entering the inner cavity of the crushing box 2 are crushed, the crushed materials fall into the inner cavity of the box I1 from the blanking port 10, the motor II 44 is started, the motor II 44 drives the roller frame 45 to rotate, the roller frame 45 drives the roller 46 to roll on the left side of the fixed plate 42 in a reciprocating manner, so that the fixed plate 42 is pushed to the right side, meanwhile, the sieving plate 41 moves in a reciprocating manner in the inner cavity of the box I1 under the action of the tension spring 43, the materials entering the inner cavity of the box I1 fall on the top of the sieving plate 41, the materials with the size meeting the requirements of the user enter the inner cavity of the conveying pipe 61 from the pore at the top of the sieving plate 41 and the blanking box 13, the materials in the inner cavity of the conveying pipe 61 are conveyed towards the right side in a spiral mode;

materials with the size not meeting the requirements of users slide to the inner cavity of the second box body 51 from the top of the screening plate 41 to the right side, fall to the top of the conveying belt 55 under the action of the gradient of the feeding cavity 14, the third motor 53 is started, the third motor 53 drives the conveying belt 55 to move through the second rotating column 54, the conveying belt 55 conveys the materials on the top of the conveying belt to the upper left side through the anti-skidding support bottom 15 until the materials are conveyed to the inner cavity of the material returning pipe 9, and the materials enter the inner cavity of the crushing box 2 again for secondary processing;

through the operation of the steps, the purposes of thorough crushing, secondary processing and one-time completion can be achieved.

In summary, the following steps: the small-size wood smashing secondary processing grading screening equipment is used by matching a smashing box 2 with a smashing mechanism 3 to process and smash materials, then the materials are screened by matching a box body 1 with a screening device 4, the materials which do not reach the requirements of a user are secondarily transported back by arranging a transporting mechanism 5, finally the finished materials are transported by arranging a transporting mechanism 6, so that the purposes of thorough smashing, secondary processing and one-time completion can be achieved, the problem of single function is solved, after screening, the materials are not transported back to the processing equipment by the transporting equipment to be secondarily processed, a user is required to transport back by manpower, a large amount of manpower and material resources are consumed by the user, the purpose of secondary processing is generally realized by adding the processing equipment by the existing secondary processing equipment, and the production cost is increased, and the secondary processing equipment is not provided with screening equipment, so that the problem that materials need to be processed again still exists.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

The electrical components presented in the document are all electrically connected with an external master controller and 220V mains, and the master controller can be a conventional known device controlled by a computer or the like.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a small-size timber is smashed secondary operation and is classified screening equipment which characterized in that: comprises a first box body (1), a crushing box (2) is installed at the top of the first box body (1), a crushing mechanism (3) is arranged in an inner cavity of the crushing box (2), a screening device (4) is arranged in the inner cavity of the first box body (1), the screening device (4) comprises a screening plate (41) which is connected to the bottom of the inner cavity of the first box body (1) in a sliding mode, a fixing plate (42) is fixedly connected to the left side of the screening plate (41), tension springs (43) are welded to the front end and the rear end of the left side of the fixing plate (42), the left end of each tension spring (43) is welded to the inner wall of the first box body (1), a second motor (44) is installed on the left side of the bottom of the first box body (1), an output shaft of the second motor (44) penetrates through the inner cavity of the first box body (1) and is fixedly connected with a roller frame (, transport mechanism (5) include box two (51) of fixed connection on box one (1) right side, the left front end fixedly connected with delivery box (52) of box two (51), the positive surface mounting of box two (51) has motor three (53), the output shaft of motor three (53) runs through to the inner chamber of box two (51), the bottom of delivery box (52) both sides all rotates and is connected with rotation post two (54), and the surface cover of two rotation posts two (54) is equipped with conveyer belt (55), the bottom of box one (1) is provided with conveying mechanism (6).

2. The small-sized wood crushing secondary processing classifying screen apparatus as set forth in claim 1, wherein: rubbing crusher constructs (3) including installing motor (31) at crushing case (2) top, the output shaft of motor (31) runs through to the inner chamber and the fixedly connected with of crushing case (2) and rotates post (32), the bottom fixedly connected with backup pad (34) of crushing case (2), the bottom of rotating post (32) is passed through the bearing and is rotated with backup pad (34) and be connected, the surperficial annular welding of rotating post (32) has a plurality of crushing blades (33).

3. The small-sized wood crushing secondary processing classifying screen apparatus as set forth in claim 1, wherein: the two sides of the bottom of the inner cavity of the roller frame (45) are rotatably connected with rollers (46), and the surfaces of the rollers (46) are in rolling connection with the left side of the fixing plate (42).

4. The small-sized wood crushing secondary processing classifying screen apparatus as set forth in claim 1, wherein: conveying mechanism (6) are including conveyer pipe (61) that are located box (1) bottom, the left side intercommunication at conveyer pipe (61) top has connecting pipe (62), four (63) of motor are installed in the left side of conveyer pipe (61), the output shaft of four (63) of motor runs through inner chamber and fixedly connected with screw thread catch bar (64) to conveyer pipe (61), the right side fixedly connected with fixed block (65) at conveyer pipe (61) inner chamber top, the right-hand member of screw thread catch bar (64) passes through the bearing and is connected with fixed block (65) rotation.

5. The small-sized wood crushing secondary processing classifying screen apparatus as set forth in claim 4, wherein: the bottom of the first box body (1) is communicated with a blanking box (13), and the bottom of the blanking box (13) is communicated with a connecting pipe (62).

6. The small-sized wood crushing secondary processing classifying screen apparatus as set forth in claim 1, wherein: and the two sides of the bottom of the first box body (1) are fixedly connected with supporting frames (7).

7. The small-sized wood crushing secondary processing classifying screen apparatus as set forth in claim 1, wherein: smash left top fixedly connected with inlet pipe (8) of case (2), inlet pipe (8) are linked together with crushing case (2), the front side fixedly connected with return pipe (9) of crushing case (2), return pipe (9) are linked together with crushing case (2), blanking mouth (10) have been seted up to the bottom of crushing case (2), blanking mouth (10) are linked together with box (1).

8. The small-sized wood crushing secondary processing classifying screen apparatus as set forth in claim 1, wherein: the front end and the rear end of the two sides of the bottom of the inner cavity of the first box body (1) are fixedly connected with limit blocks (11), and two limit grooves (12) matched with the limit blocks (11) are formed in the two sides of the bottom of the screening plate (41).

9. The small-sized wood crushing secondary processing classifying screen apparatus as set forth in claim 1, wherein: and a feeding cavity (14) is arranged at the bottom of the inner cavity of the second box body (51), and the top of the feeding cavity (14) is an inclined plane with a front bottom and a rear high.

10. The small-sized wood crushing secondary processing classifying screen apparatus as set forth in claim 1, wherein: the surface of the conveying belt (55) is connected with a plurality of anti-skidding support bottoms (15) through bolts, and the inner cavities of the anti-skidding support bottoms (15) are arc-shaped.