CN113277272A

CN113277272A - Three-dimensional multilayer formula belt conveyor

Info

Publication number: CN113277272A
Application number: CN202110829519.0A
Authority: CN
Inventors: 袁晓玉
Original assignee: Shandong Xinding Technology Co Ltd
Current assignee: Shandong Xinding Technology Co Ltd
Priority date: 2021-07-22
Filing date: 2021-07-22
Publication date: 2021-08-20
Anticipated expiration: 2041-07-22
Also published as: CN113277272B

Abstract

The invention relates to the technical field of material conveying, in particular to a three-dimensional multi-layer belt conveying device which comprises a screening conveying device, mounting frames and an output device, wherein the screening conveying device is mounted between the mounting frames, and the right end of the conveying device is connected with the output device. The belt conveying device can solve the problems that when the existing belt conveying equipment conveys the crushed materials, the crushed materials are required to be conveyed to a designated position and then screened, and the materials with different sizes are conveyed respectively, so that the overall utilization rate of the device is low, and the working time is prolonged; the mechanical equipment capable of screening the fragment materials in the conveying process of the fragment materials is designed, the screened fragment materials can be respectively conveyed, the utilization rate of the whole equipment is improved, and meanwhile, the position and the height of the final conveying position of the screened material can be adjusted, so that the material can be conveniently conveyed to a designated position.

Description

Three-dimensional multilayer formula belt conveyor

Technical Field

The invention relates to the technical field of material conveying, in particular to a three-dimensional multi-layer belt conveying device.

Background

At present, when materials are transported, the materials are often conveyed to a designated position by a belt, and the belt can enable the materials to form automatic conveying from a feeding point to a discharging point on a certain conveying line; the belt conveying can be used for conveying broken materials and finished articles, and has the advantages of high speed, stability, low noise and the like.

At present, the following defects generally exist when conveying the crushed materials: 1. when the existing belt conveying equipment conveys the crushed materials, the crushed materials are often required to be conveyed to a designated position and then screened, and the materials with different sizes are conveyed respectively, so that the overall utilization rate of the device is low, and the working time is prolonged; 2. the conveying length and the conveying height of a belt of the conventional belt conveying equipment are often fixed, and the conventional belt conveying equipment can only convey materials to a specified position and cannot adjust the final conveying position of the screened materials.

Disclosure of Invention

In order to solve the problems, the invention adopts the following technical scheme that the three-dimensional multilayer belt conveying equipment comprises two screening conveying devices, two mounting frames and an output device, wherein the two mounting frames are symmetrically arranged front and back, the screening conveying devices are mounted between the mounting frames, and the right end of each conveying device is connected with the output device.

The screening and conveying device comprises a roller group, a first belt, a screening mechanism, a driving mechanism and an output frame, wherein the roller group is arranged on the upper side and the lower side between the mounting frames, the roller group comprises two bilaterally symmetrical rollers, the rollers are mounted between the mounting frames through a pin shaft, the first belt is sleeved between the rollers in the same roller group, the screening mechanism is arranged on the first belt on the upper side, the driving mechanism is arranged on the left side of the roller group, the output frame is fixed on the upper side of the mounting frame on the front side, the upper end of the output frame is positioned in the first belt on the upper side, when the screening and conveying device works in detail, the crushed block-shaped materials are slowly poured into the left side of the upper end of the first belt on the upper side, the rollers are driven to rotate through the driving mechanism, so that the first belt on the upper side moves, and then the crushed block materials move rightwards, and the crushed block materials on the first belt on the upper side are screened through the screening mechanism, thereby make the less fragment material of diameter pass the screening hole of upside and then reach the output frame, the output frame can be with on the less fragment material of diameter derives the belt of downside, drive a belt of downside through actuating mechanism and move left, thereby make the less fragment material of diameter transport the left side and from a belt of downside gliding down and pile up, at this moment, the belt of upside drives the suitable fragment material of diameter size and moves right and carry output device on, export to the assigned position via output device.

The output device comprises a fixed rod, a first conveying roller, a second conveying roller, an adjusting mechanism, a connecting column, an H-shaped plate, a third conveying roller, a second belt and a rotating motor, the fixed rod is fixed on the upper side of the right end of the mounting frame, the first conveying roller is rotatably installed between the fixed rods, the second conveying roller is arranged on the right side of the first conveying roller, the front side and the rear side of the second conveying roller are symmetrically and rotatably installed on the adjusting mechanism, the connecting column is connected between the adjusting mechanisms on the front side and the rear side, the adjusting mechanism is installed on the right end of the H-shaped plate, the H-shaped plate is positioned on the right side of the mounting frame, the third conveying roller is symmetrically arranged on the left side and the right side of the upper side of the H-shaped plate, the second belt is sleeved among the first conveying roller, the, the concrete during operation, can adjust the horizontal position and the vertical height of No. two conveying rollers through adjustment mechanism, and then make the output position of No. two belts move the assigned position, after the suitable fragment material of diameter size slided from a belt right side of upside and flowed into on No. two belts, it is rotatory to drive a conveying roller through rotating the motor, and then make No. two belts drive the suitable fragment material of diameter size and move to the assigned position and fall down, No. two belts move and drive No. two conveying rollers and No. three conveying roller motions in step simultaneously.

The adjusting mechanism comprises a mounting block, an air cylinder, a sliding block, a limiting groove, a limiting frame, a clamping groove and a clamping branch chain, wherein the front end and the rear end of the second conveying roller are rotatably mounted on the mounting block which is symmetrically arranged front and back, the lower end of the mounting block is connected with the ejection end of the air cylinder, the air cylinder is mounted on the sliding block through an air cylinder base, the sliding block is slidably mounted in the limiting groove, the limiting groove is formed in the upper end of the limiting frame, the left end of the limiting frame is in threaded connection with the H-shaped plate, the clamping groove is uniformly formed in the front end of the limiting frame, the clamping branch chain is arranged on the sliding block, when the adjusting mechanism works, the sliding block is pushed to move to a proper position in the limiting groove, so that the air cylinder and the mounting block are driven to move to a proper horizontal position, the second conveying roller is driven to a proper horizontal position, the rightmost side of the second belt is synchronously driven to move to a proper horizontal position, and the position of the sliding block is fixed through the matching of the clamping branch chain and the clamping groove, after the horizontal position is determined, the mounting blocks are synchronously pushed to move upwards through the air cylinders on the two sides, so that the mounting blocks drive the second conveying roller to move upwards, the position of the second conveying roller is adjusted, and the output position of the rightmost side of the second belt is adjusted to a proper position; in the process of whole adjustment, the motion of No. two belts drives No. three conveying roller upward movements in step to No. three conveying roller drive the slider upward movement in the spout and extrude supporting spring in step, maintain the tensioning degree of No. two belts through the change of No. three conveying roller positions, ensure that the not hard up condition can not appear in the adjustment process belt.

Preferably, screening holes are uniformly formed in the first belt on the upper side, so that smaller fragments can be conveniently screened during transportation.

Preferably, the screens branch include recess, fixture block and screens spring, the one end that the spliced pole was kept away from to the downside of sliding block is seted up flutedly, slidable mounting has the fixture block in the recess, the fixture block passes through screens spring and groove connection, the fixture block joint is in the draw-in groove.

Preferably, the screening mechanism comprises a rotary column, a movable rod, a sliding groove, a reset spring, an arc-shaped lug, a rotary plate, an arc-shaped groove, a rotary shaft and a driving motor, the rotary column is uniformly arranged on the lower side of the upper end of the first belt on the upper side, the front end and the rear end of the rotary column are rotatably arranged on the movable rod symmetrically arranged in front and rear, the sliding rod is fixed in the middle of the movable rod and is slidably arranged in the sliding groove, the sliding groove is arranged on the upper side of the middle part of the mounting frame and is connected with the sliding groove through the reset spring, the arc-shaped lug is arranged on one side of the lower end of the sliding rod, which is far away from the rotary column, the rotary plate is arranged below the arc-shaped lug, the arc-shaped groove is uniformly arranged on the outer wall of the rotary plate along the circumferential direction, the arc-shaped lug is arranged in the arc-shaped groove, the middle parts of the rotary plate are connected through the rotary shaft, the rotary shaft is rotatably arranged on the mounting frame and penetrates through the output frame, the rear end of the rotary shaft is connected with the output end of the driving motor, the driving motor is installed on the installation frame through the motor base.

Preferably, the upper end of carriage release lever even have spacing frame, the swash plate is installed to spacing frame's left end, install the leveling plate through the spacing spring of even setting on the left inner wall of spacing frame upper end.

Preferably, the lower extreme of levelling plate evenly be provided with the flattening piece, make levelling plate smooth the effect better.

Preferably, actuating mechanism include a gear, No. two gears and driving motor, the front end of roller is changeed on the left side installs a gear, the opposite side meshing of a gear has No. two gears, intermeshing between No. two gears, No. two gear revolve the left end of installation at the mounting bracket of front side, the rear end of a gear of downside and driving motor's output shaft, driving motor passes through motor base and installs on the mounting bracket of rear side.

Preferably, the front end and the rear end of the third conveying roller are rotatably arranged in the sliding block, the sliding block is arranged in the sliding groove in a sliding mode, the sliding groove is formed in the opposite side of the H-shaped plate, and the sliding block is connected with the sliding groove through a supporting spring.

The invention has the beneficial effects that: 1. the mechanical equipment capable of screening the fragment materials in the conveying process of the fragment materials is designed, the screened fragment materials can be respectively conveyed, the utilization rate of the whole equipment is improved, and meanwhile, the position and the height of the final conveying position of the screened material can be adjusted, so that the material can be conveniently conveyed to a designated position.

2. According to the three-dimensional multi-layer belt conveying equipment, when the upper belt conveys materials, the arc-shaped lug vibrates up and down through the rotation of the rotating plate, so that the upper end of the upper belt vibrates, fragments which do not accord with the standard are vibrated down to flow down from the upper screening hole and flow out through the lower screening hole to the lower belt, the fragments which do not accord with the standard are conveyed to the left side through the lower belt to be stacked, and the fragments which accord with the standard are conveyed out from the right side of the upper belt.

3. According to the three-dimensional multi-layer type belt conveying equipment, the position of the second conveying roller is adjusted, so that the output position of the material is changed, the second belt is kept at a certain tensioning degree through the third conveying roller, and the second belt can still convey the material stably after the position of the second conveying roller is adjusted.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic view of a first three-dimensional structure of the present invention.

Fig. 2 is a second perspective view of the present invention.

Fig. 3 is a cross-sectional view of the present invention.

Fig. 4 is a cross-sectional view taken along plane a-a of fig. 3 in accordance with the present invention.

Fig. 5 is a cross-sectional view taken along plane B-B of fig. 3 of the present invention.

Fig. 6 is a cross-sectional view taken along plane C-C of fig. 3 in accordance with the present invention.

Fig. 7 is an enlarged view of a portion of the invention at X of fig. 1.

In the figure: 1. a conveying device; 11. a turning roll group; 12. a first belt; 121. screening holes; 13. a screening mechanism; 131. turning the column; 132. a travel bar; 13a, a limit frame; 13b, a sloping plate; 13c, a limit spring; 13d, a leveling plate; 133. a slide bar; 134. a sliding groove; 135. a return spring; 136. an arc-shaped bump; 137. a rotating plate; 138. an arc-shaped slot; 139. a rotating shaft; 140. driving a motor; 14. a drive mechanism; 141. a first gear; 142. a second gear; 143. a drive motor; 15. outputting a frame; 2. a mounting frame; 3. an output device; 31. fixing the rod; 32. a first conveying roller; 33. a second conveying roller; 34. an adjustment mechanism; 341. mounting blocks; 342. a cylinder; 343. a slider; 344. a limiting groove; 345. a limiting frame; 346. a card slot; 347. a clamping branched chain; 34a, a groove; 34b, a fixture block; 34c, a clamping spring; 35. connecting columns; 36. an H-shaped plate; 37. a third conveying roller; 371. a slider; 372 a chute; 373 support a spring; 38. a second belt; 39. the motor is rotated.

Detailed Description

The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.

Referring to fig. 1 and 2, a three-dimensional multilayer formula belt conveyors, including screening conveyor 1, mounting bracket 2 and output device 3, mounting bracket 2 be provided with two and around symmetrical arrangement, screening conveyor 1 installs between mounting bracket 2, conveyor 1's right-hand member even has output device 3.

Referring to fig. 1, 2 and 3, the screening and conveying device 1 includes a roller set 11, a first belt 12, a screening mechanism 13, a driving mechanism 14 and an output frame 15, the roller set 11 is disposed on both upper and lower sides between the mounting frames 2, the roller set 11 includes two bilaterally symmetrical rollers, the rollers are mounted between the mounting frames 2 through a first pin shaft, the first belt 12 is sleeved between the rollers in the same roller set 11, the screening mechanism 13 is disposed on the first belt 12 on the upper side, the driving mechanism 14 is disposed on the left side of the roller set 11, the output frame 15 is fixed on the upper side of the mounting frame 2 on the front side, and the upper end of the output frame 15 is located in the first belt 12 on the upper side; screening holes 121 are uniformly formed in the first belt 12 on the upper side, so that smaller fragments can be conveniently screened during transportation, during specific work, crushed materials are slowly poured into the left side of the upper end of the first belt 12 on the upper side, the driving mechanism 14 drives the rotary roller to rotate, the first belt 12 on the upper side is made to move, then the crushed materials are driven to move rightwards, the crushed materials on the first belt 12 on the upper side are screened through the screening mechanism 13, so that the crushed materials with smaller diameters pass through the screening holes 121 on the upper side and reach the output frame 15, the output frame 15 can guide the crushed materials with smaller diameters out of the first belt 12 on the lower side, the first belt 12 on the lower side is driven to move leftwards through the driving mechanism 14, and then the crushed materials with smaller diameters are transported to the left side and slide down from the first belt 12 on the lower side and are stacked, the first belt 12 on the upper side drives the fragment materials with proper diameters to move rightwards and convey the fragment materials to the output device 3, and the fragment materials are output to a designated position through the output device 3.

Referring to fig. 6 and 7, the screening mechanism 13 includes a rotary column 131, a moving rod 132, a sliding rod 133, a sliding groove 134, a return spring 135, an arc-shaped protrusion 136, a rotating plate 137, an arc-shaped groove 138, a rotating shaft 139 and a driving motor 140, the rotary column 131 is uniformly arranged on the lower side of the upper end of the first belt 12 on the upper side, the front end and the rear end of the rotary column 131 are rotatably mounted on the moving rod 132 symmetrically arranged in front and rear, the sliding rod 133 is fixed in the middle of the moving rod 132, the sliding rod 133 is slidably arranged in the sliding groove 134, the sliding groove 134 is arranged on the upper side of the middle of the mounting frame 2, the sliding rod 133 is connected with the sliding groove 134 through the return spring 135, the arc-shaped protrusion 136 is mounted on one side of the lower end of the sliding rod 133, which is far away from the rotary column 131, the rotating plate 137 is arranged below the arc-shaped protrusion 136, the arc-shaped groove 138 is uniformly arranged on the outer wall of the rotating plate 137 along the circumferential direction, the arc-shaped protrusion 136 is arranged in the arc-shaped groove 138, the middle of the rotating plate 137 is connected through the rotating shaft 139, the rotating shaft 139 is rotatably mounted on the mounting frame 2, the rotating shaft 139 penetrates through the output frame 15, the rear end of the rotating shaft 139 is connected with the output end of the driving motor 140, the driving motor 140 is mounted on the mounting frame 2 through a motor base, during specific work, when the first belt 12 on the upper side moves, the rotating shaft 139 is driven to rotate through the driving motor 140, so that the rotating plates 137 on the two sides rotate, the arc-shaped groove 138 rotates and pops the arc-shaped protrusion 136, when the arc-shaped protrusion 136 is popped, the sliding rod 133 is driven to move upwards in the sliding groove 134 and simultaneously stretches the return spring 135, meanwhile, the sliding rod 133 moves upwards to drive the moving rod 132 to move upwards, so that the rotating column 131 pushes the upper end of the first belt 12 on the upper side to move upwards, the rotating plates 137 continuously rotate to enable the arc-shaped protrusion 136 to fall into the arc-shaped groove 138, so that the first belt 12 on the upper side resets, and in the rotating plate 137 continuously rotates, the arc-shaped convex block 136 is continuously contacted with the arc-shaped groove 138 and then separated, so that the rotary column 131 drives the belt 12 on the upper side to vibrate to increase the screening effect on the fragment materials, and the rotary column 131 can be matched and rotated in the vibration process of the belt 12, so that the belt 12 can normally run.

Referring to fig. 3 and 6, the upper end of the moving rod 132 is connected with a limiting frame 13a, the left end of the limiting frame 13a is provided with an inclined plate 13b, and the inner wall of the left side of the upper end of the limiting frame 13a is provided with a flat plate 13d through a uniformly arranged limiting spring 13 c; the lower extreme of leveling plate 13d evenly be provided with the flattening piece, make leveling plate 13d smooth the effect better, during specific work, the material fragment is poured into the upper end left side of a belt 12 of upside after, along with the motion of a belt 12 enters into spacing frame 13a in, through the effect between swash plate 13b and the spacing frame 13a, makes the material fragment pushed away and levels, rethread leveling plate 13d smoothes the kibble upper end, makes the material fragment distribute evenly.

Referring to fig. 1 and 2, the driving mechanism 14 includes a first gear 141, a second gear 142 and a driving motor 143, the first gear 141 is installed at the front end of the left rotary roller, the second gear 142 is engaged with the opposite side of the first gear 141, the second gear 142 is engaged with each other, the second gear 142 is rotatably installed at the left end of the front mounting frame 2, the rear end of the lower first gear 141 is connected with the output shaft of the driving motor 143, and the driving motor 143 is installed on the rear mounting frame 2 through a motor base.

Referring to fig. 1 and 2, the output device 3 includes a fixed rod 31, a first conveying roller 32, a second conveying roller 33, an adjusting mechanism 34, a connecting column 35, an H-shaped plate 36, a third conveying roller 37, a second belt 38 and a rotating motor 39, the fixed rod 31 is fixed on the upper side of the right end of the mounting frame 2, the first conveying roller 32 is rotatably installed between the fixed rods 31, the second conveying roller 33 is arranged on the right side of the first conveying roller 32, the front and rear sides of the second conveying roller 33 are symmetrically and rotatably installed on the adjusting mechanism 34, the connecting column 35 is connected between the adjusting mechanisms 34 on the front and rear sides, the adjusting mechanism 34 is installed on the right end of the H-shaped plate 36, the H-shaped plate 36 is located on the right side of the mounting frame 2, the third conveying roller 37 is symmetrically arranged on the left and right sides of the upper side of the H-shaped plate 36, the second belt 38 is sleeved between the first conveying roller 32, the second conveying roller 33 and the third conveying roller 37, the rear end of the first conveying roller 32 is connected with the output shaft of the rotating motor 39, rotate motor 39 and pass through the motor fixing base and install on mounting bracket 2, concrete during operation, can adjust the horizontal position and the vertical height of No. two conveying rollers 33 through adjustment mechanism 34, and then make the output position of No. two belts 38 move the assigned position, after the fragment material that the diameter size is suitable slided down and flows into on No. two belts 38 from a belt 12 right side of upside, it is rotatory to drive a conveying roller 32 through rotating motor 39, and then make No. two belts 38 drive the fragment material that the diameter size is suitable and move to the assigned position and fall down, meanwhile No. two belts 38 move and drive No. two conveying rollers 33 and No. three conveying rollers 37 motion in step.

Referring to fig. 2 and 5, the adjusting mechanism 34 includes a mounting block 341, an air cylinder 342, a sliding block 343, a limiting groove 344, a limiting frame 345, a clamping groove 346 and a clamping branch 347, the front and rear ends of the second conveying roller 33 are rotatably mounted on the mounting block 341 which is symmetrically arranged in front and rear, the lower end of the mounting block 341 is connected with the ejection end of the air cylinder 342, the air cylinder 342 is mounted on the sliding block 343 through an air cylinder base, the sliding block 343 is slidably mounted in the limiting groove 344, the limiting groove 344 is opened at the upper end of the limiting frame 345, the left end of the limiting frame 345 is screwed on the H-shaped plate 36, the clamping groove 346 is uniformly formed at the front end of the limiting frame 345, the clamping branch 347 is arranged on the sliding block 343, when the adjusting mechanism works, the sliding block 343 is pushed to move to a proper position in the limiting groove 344, so as to drive the air cylinder 342 and the mounting block 341 to move to a proper horizontal position, further drive the second conveying roller 33 to move to a proper horizontal position and synchronously drive the rightmost side of the second belt 38 to a proper horizontal position, the position of the sliding block 343 is fixed by the matching of the clamping branch 347 and the clamping groove 346, and after the horizontal position is determined, the mounting block 341 is pushed to move upwards synchronously by the cylinders 342 on the two sides, so that the mounting block 341 drives the second conveying roller 33 to move upwards, the position of the second conveying roller 33 is adjusted, and the output position of the rightmost side of the second belt 38 is adjusted to a proper position; in the whole adjustment process, the third conveying roller 37 is driven to move upwards by the movement of the second belt 38 synchronously, so that the third conveying roller 37 drives the sliding block 371 to move upwards in the sliding groove 372 and synchronously extrude the supporting spring 373, the tension degree of the second belt 38 is maintained by the change of the position of the third conveying roller 37, and the condition that the belt is not loosened in the adjustment process is ensured.

Referring to fig. 2 and 5, the locking branch 347 includes a groove 34a, a locking block 34b and a locking spring 34c, the groove 34a is formed at an end of the lower side of the sliding block 343 away from the connecting column 35, the locking block 34b is slidably mounted in the groove 34a, the locking block 34b is connected to the groove 34a through the locking spring 34c, and the locking block 34b is locked in the locking groove 346.

Referring to fig. 3 and 4, the front end and the rear end of the third conveying roller 37 are rotatably installed in a sliding block 371, the sliding block 371 is slidably installed in a sliding groove 372, the sliding groove 372 is opened at the opposite side of the H-shaped plate 36, and the sliding block 371 is connected with the sliding groove 372 through a supporting spring 373.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention; any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a three-dimensional multilayer formula belt conveyors equipment, includes screening conveyor (1), mounting bracket (2) and output device (3), its characterized in that: the two mounting frames (2) are symmetrically arranged front and back, the screening and conveying device (1) is arranged between the mounting frames (2), and the right end of the conveying device (1) is connected with an output device (3);

the screening and conveying device (1) comprises a roller set (11), a first belt (12), a screening mechanism (13), a driving mechanism (14) and an output frame (15), wherein the roller set (11) is arranged on the upper side and the lower side between the mounting frames (2), the roller set (11) comprises two bilaterally symmetrical rollers, the rollers are mounted between the mounting frames (2) through a first pin shaft, the first belt (12) is sleeved between the rollers in the same roller set (11), the screening mechanism (13) is arranged on the first belt (12) on the upper side, the driving mechanism (14) is arranged on the left side of the roller set (11), the output frame (15) is fixed on the upper side of the mounting frame (2) on the front side, and the upper end of the output frame (15) is positioned in the first belt (12) on the upper side;

the output device (3) comprises a fixed rod (31), a first conveying roller (32), a second conveying roller (33), an adjusting mechanism (34), a connecting column (35), an H-shaped plate (36), a third conveying roller (37), a second belt (38) and a rotating motor (39), the fixed rod (31) is fixed on the upper side of the right end of the mounting rack (2), the first conveying roller (32) is rotatably installed between the fixed rods (31), the second conveying roller (33) is arranged on the right side of the first conveying roller (32), the front side and the rear side of the second conveying roller (33) are symmetrically rotatably installed on the adjusting mechanism (34), the connecting column (35) is connected between the adjusting mechanisms (34) on the front side and the rear side, the adjusting mechanisms (34) are installed on the right end of the H-shaped plate (36), the H-shaped plate (36) is located on the right side of the mounting rack (2), the third conveying roller (37) is symmetrically arranged on the left side and the right side of the upper side of the H-shaped plate (36), a second belt (38) is sleeved among the first conveying roller (32), the second conveying roller (33) and the third conveying roller (37), the rear end of the first conveying roller (32) is connected with an output shaft of a rotating motor (39), and the rotating motor (39) is installed on the installation frame (2) through a motor fixing seat;

the adjusting mechanism (34) comprises an installation block (341), a cylinder (342), a sliding block (343), a limiting groove (344), a limiting frame (345), a clamping groove (346) and a clamping branch chain (347), wherein the front end and the rear end of a second conveying roller (33) are rotatably installed on the installation block (341) which is symmetrically arranged in the front and the rear, the lower end of the installation block (341) is connected with the ejection end of the cylinder (342), the cylinder (342) is installed on the sliding block (343) through a cylinder base, the sliding block (343) is slidably installed in the limiting groove (344), the limiting groove (344) is arranged at the upper end of the limiting frame (345), the left end of the limiting frame (345) is in threaded connection with an H-shaped plate (36), the clamping groove (346) is evenly arranged at the front end of the limiting frame (345), and the clamping branch chain (347) is arranged on.

2. The apparatus of claim 1, wherein: screening holes (121) are uniformly formed in the first belt (12) on the upper side.

3. The apparatus of claim 1, wherein: the clamping branched chain (347) comprises a groove (34a), a clamping block (34b) and a clamping spring (34c), the groove (34a) is formed in one end, away from the connecting column (35), of the lower side of the sliding block (343), the clamping block (34b) is arranged in the groove (34a) in a sliding mode, the clamping block (34b) is connected with the groove (34a) through the clamping spring (34c), and the clamping block (34b) is clamped in the clamping groove (346).

4. The apparatus of claim 1, wherein: the screening mechanism (13) comprises a rotary column (131), a moving rod (132), a sliding rod (133), a sliding groove (134), a reset spring (135), an arc-shaped convex block (136), a rotating plate (137), an arc-shaped groove (138), a rotating shaft (139) and a driving motor (140), the rotary column (131) is uniformly arranged on the lower side of the upper end of a first belt (12) on the upper side, the front end and the rear end of the rotary column (131) are rotatably arranged on the moving rod (132) symmetrically arranged in the front and the rear direction, the sliding rod (133) is fixed in the middle of the moving rod (132), the sliding rod (133) is slidably arranged in the sliding groove (134), the sliding groove (134) is arranged on the upper side of the middle of the mounting frame (2), the sliding rod (133) is connected with the sliding groove (134) through the reset spring (135), the arc-shaped convex block (136) is arranged on one side, far away from the rotary column (131), of the lower end of the sliding rod (, arc wall (138) have evenly been seted up along its circumference to rotor plate (137) outer wall, arc lug (136) are arranged in arc wall (138), connect through pivot (139) between the middle part of rotor plate (137), pivot (139) rotate and install on mounting bracket (2), and pivot (139) pass output frame (15), the rear end of pivot (139) is connected with the output that drives motor (140), it installs on mounting bracket (2) to drive motor (140) through the motor cabinet.

5. The apparatus according to claim 4, wherein: the upper end of carriage release lever (132) even have spacing frame (13a), swash plate (13b) are installed to the left end of spacing frame (13a), and leveling plate (13d) are installed through the spacing spring (13c) of evenly setting on the left inner wall of spacing frame (13a) upper end.

6. The apparatus according to claim 5, wherein: the lower end of the leveling plate (13d) is uniformly provided with a leveling block.

7. The apparatus of claim 1, wherein: actuating mechanism (14) include No. one gear (141), No. two gear (142) and driving motor (143), No. one gear (141) is installed to the front end of left side commentaries on classics roller, the opposite side meshing of No. one gear (141) has No. two gear (142), intermeshing between No. two gear (142), No. two gear (142) rotate the left end of installing in the mounting bracket (2) of front side, the rear end of a gear (141) of downside and driving motor (143) output shaft, driving motor (143) pass through the motor base and install on mounting bracket (2) of rear side.

8. The apparatus of claim 1, wherein: no. three delivery roller (37) around both ends rotate to be installed in slider (371), slider (371) slide to set up in spout (372), spout (372) are seted up in the opposite side of H template (36), slider (371) are connected with spout (372) through supporting spring (373).