A raw material screening device and use method thereof

Abstract

The present invention relates to a raw material screening device and a method for using the same, and belongs to the technical field of paper screening. The raw material screening device provided by the present invention comprises a housing, and also comprises a paging mechanism and a vibration impurity removal mechanism arranged on the inner side of the housing and arranged sequentially from left to right; the paging mechanism comprises a first conveyor belt assembly and a second conveyor belt assembly; the vibration impurity removal mechanism comprises a bracket movably mounted on the housing forward and backward, a third conveyor belt assembly mounted on the bracket and at the same height as the second conveyor belt assembly, and a driving mechanism cooperating with the bracket to drive the bracket to swing forward and backward, the third conveyor belt assembly comprises a third belt and a third suction cup located on the inner side of the third belt and adsorbed on the top inner side wall of the third belt, the adsorption end of the third suction cup is provided with a support plate extending left and right and convex upward in the middle, and the upper half of the third belt is pushed upward by the support plate. The raw material screening device provided by the present invention has a better effect of screening out impurities.

Description

Technical Field

[0001] The present invention relates to the technical field of paper screening, and in particular to a raw material screening device and a use method thereof. Background Art

[0002] Re-pulping of waste book paper refers to the process of converting the collected waste book paper into new pulp through a series of treatments, and then using it to produce new paper or paper products. This process not only saves resources and reduces the demand for virgin wood, but also helps protect the environment and reduces pollution caused by landfill and incineration.

[0003] The process of recycling and re-pulping book waste paper can be divided into the steps of waste paper collection and pretreatment, screening and sorting, crushing and soaking. The screening and sorting steps are to remove various impurities in the waste paper to improve the purity of the waste paper and thus improve the quality of recycled paper.

[0004] In the prior art, impurities mixed in waste paper are generally removed by screening drums, such as a waste book paper dust collector disclosed in the patent with the authorization announcement number CN204194271U, which includes a cylindrical mesh cage installed on a frame, the cylindrical mesh cage is installed on the frame in an inclined state, a feed port is provided at the higher end of the cylindrical mesh cage, a discharge port is provided at the lower end of the cylindrical mesh cage, and a belt conveyor and a cylindrical mesh cage connection drive device are provided below the discharge port. The dust collector can screen out fine impurities in waste book paper and reduce the consumption of deinking chemicals.

[0005] However, when the waste book paper dust collector is in use, a large amount of waste paper is mixed in the cylindrical mesh cage, which inevitably causes some impurities to be mixed in the waste paper and difficult to be screened out. In addition, in the actual screening process, the waste book paper has various forms and contains various impurities. There are often cases where strong sticky impurities are adhered to the paper or multiple sheets of paper are adhered together. In this state, the waste paper may have a large amount of impurities wrapped between the sheets of paper that are attached to each other. It is difficult to remove the impurities wrapped by the waste paper by only using the above waste book paper dust collector to screen through the rotating cylindrical mesh cage, and the effect of removing impurities is poor. Summary of the invention

[0006] The invention provides a raw material screening device to solve the technical problem that the waste paper screening device in the prior art has a poor effect of screening out impurities.

[0007] The present invention also provides a method for using a raw material screening device. By controlling the raw material screening device to screen waste paper, impurities mixed in the waste paper can be effectively removed, and the impurity removal effect is better.

[0008] In order to solve the above problems, the present invention provides a raw material screening device adopting the following technical solution:

[0009] A raw material screening device comprises a housing and further comprises:

[0010] A paging mechanism and a vibration impurity removal mechanism are arranged inside the housing and arranged sequentially from left to right;

[0011] The paging mechanism includes a first conveyor belt assembly and a second conveyor belt assembly which are arranged at intervals from top to bottom and both convey in the left-right direction; the first conveyor belt assembly includes a first belt and a first suction cup which is arranged on the inner side of the first belt and adsorbed on the inner side wall of the bottom of the first belt, the first belt is provided with a plurality of first through holes arranged in an array, the first suction cup is used to adsorb the paper located in the upper layer on the lower surface of the first belt through the first through holes; the second conveyor belt assembly includes a second belt and a second suction cup which is arranged on the inner side of the second belt and adsorbed on the inner side wall of the top of the second belt, the second belt is provided with a plurality of second through holes arranged in an array, the second suction cup is used to adsorb the paper located in the lower layer on the upper surface of the second belt through the second through holes, the lower half of the first belt moves from right to left, and the upper half of the second belt moves from left to right;

[0012] The vibrating impurity removing mechanism includes a bracket movably mounted on the casing forward and backward, a third conveyor belt assembly mounted on the bracket and at the same height as the second conveyor belt assembly, and a driving mechanism cooperating with the bracket to drive the bracket to swing forward and backward. The third conveyor belt assembly includes a third belt having a plurality of third through holes arranged in an array and a third suction cup located on the inner side of the third belt and adsorbed on the top inner wall of the third belt. The adsorption end of the third suction cup is provided with a support plate extending left and right and protruding upward in the middle. The upper half of the third belt is pushed upward by the support plate.

[0013] The above technical solution is adopted, when in use, the stacked paper is placed between the first conveyor belt assembly and the second conveyor belt assembly, the first conveyor belt assembly can absorb the paper on the upper layer and drag the paper to the left, the second conveyor belt assembly can absorb the paper on the lower layer and drag the paper to the right, so that the stacked or adhered paper is layered, and the impurities covered between the paper are exposed, which is convenient for subsequent screening. The second conveyor belt assembly drags the layered paper to the right to the third conveyor belt assembly, and the middle part of the paper is lifted up to form a downward inclined surface, which is convenient for impurities on the paper to roll down along the inclined surface. The bracket shakes back and forth to shake off the impurities adhered and mixed in the paper. Since the paper has been layered at the paging mechanism, the impurities are more likely to fall off the paper during the shaking process, and the impurity removal effect is better.

[0014] Furthermore, the left end of the second conveyor belt assembly protrudes to the left from the left end of the first conveyor belt assembly, and the right end of the second conveyor belt assembly protrudes to the right from the right end of the first conveyor belt assembly.

[0015] By adopting the above technical solution, the waste paper dragged by the first conveyor belt assembly can be adsorbed by the second conveyor belt assembly and continue to be transported to the right and layered again after leaving the first conveyor belt assembly. Compared with making the first conveyor belt assembly and the second conveyor belt assembly equal in length, it can prevent the waste paper transported to the left from falling between the first conveyor belt assembly and the second conveyor belt assembly after leaving the first conveyor belt assembly.

[0016] Furthermore, a gap smaller than the paper width is provided between the third conveyor belt assembly and the second conveyor belt assembly, a baffle opposite to the gap is provided above the second conveyor belt assembly and the third conveyor belt assembly, and a blowing assembly is provided below the second conveyor belt assembly, and the blowing assembly is used to blow air toward the gap so that the paper output by the second conveyor belt assembly fits against the bottom surface of the baffle.

[0017] By adopting the above technical solution, when the paper passes through the gap between the second conveyor belt assembly and the third conveyor belt assembly, the blowing assembly can blow the paper so that the paper is tightly attached to the bottom surface of the baffle, so that the paper can pass through the gap smoothly and prevent the paper from falling off from the gap. At the same time, the blowing assembly can blow off impurities adhered to the bottom of the paper through the gap, and the blown impurities can directly fall downward from the gap.

[0018] Furthermore, an elastic member capable of extending forward and backward is connected between the bracket and the casing, the bracket includes a passive paddle plate, the driving mechanism includes a driving motor, a paddle rod and an active paddle plate, the paddle rod extends in the left-right direction and is connected to the driving output end of the driving motor, the active paddle plate is connected to the outer side wall of the paddle rod, the active paddle plate and the passive paddle plate block each other in the circumferential direction of the paddle rod, and when the paddle rod is driven to rotate by the driving motor, the passive paddle plate can be paddled through the active paddle plate, thereby driving the bracket to swing back and forth.

[0019] Furthermore, a debris discharge port is respectively provided on the front and rear side walls of the housing, and the debris discharge port is opposite to the top surface of the third belt in the front and rear, and the debris discharge port is used to discharge impurities shaken off from the paper on the third belt.

[0020] Furthermore, a squeezing roller group is provided on the right side of the vibrating impurity removing mechanism, and the squeezing roller group includes a top squeezing roller and a bottom squeezing roller which are arranged in sequence up and down and extend forward and backward, and the squeezing area between the top squeezing roller and the bottom squeezing roller is opposite to the top surface of the third belt on the left and right.

[0021] By adopting the above technical scheme, after the impurities mixed in the paper are screened out by the vibrating impurity removal mechanism, the paper is transported to the squeezing roller group and squeezed by the top squeezing roller and the bottom squeezing roller. In this way, the impurities with strong adhesion and large volume in the paper can be crushed, and the parts of the crushed impurities far away from the paper can fall off the paper, further enhancing the impurity removal effect.

[0022] Furthermore, a fourth conveyor belt assembly having the same height as the third conveyor belt assembly is provided on the right side of the third conveyor belt assembly, and the fourth conveyor belt assembly includes a fourth belt having a plurality of fourth through holes arranged in an array and a fourth suction cup located on the inner side of the fourth belt and used for adsorbing on the top inner wall of the fourth belt.

[0023] By adopting the above technical solution, the fourth conveyor belt assembly serves as a transition conveying structure. After the paper is output by the shaking third conveyor belt assembly, it first falls on the fourth conveyor belt assembly and then enters the extrusion area in the extrusion roller group. In this way, there is no need to control the drive mechanism to stop shaking before the paper enters the extrusion area in the extrusion roller. The drive mechanism can continue to work, and the equipment has higher working efficiency.

[0024] The beneficial effect of a raw material screening device provided by the present invention is: the stacked paper is first layered through a paging mechanism, and then the layered paper is vibrated and screened, which makes it easier to remove impurities mixed in the paper and achieves a better impurity removal effect. During the screening process, the paper is always in a state of being adsorbed by the third conveyor belt assembly, and the paper and impurities can be separated more thoroughly.

[0025] The present invention also provides a method for using the raw material screening device, the method comprising the following steps:

[0026] S1. placing the stacked waste paper at the input end of the second conveyor belt assembly, operating the first conveyor belt assembly and the second conveyor belt assembly, causing the first suction cup to absorb the upper layer of waste paper onto the bottom surface of the first belt, causing the second suction cup to absorb the lower layer of waste paper onto the top surface of the second belt, the second belt dragging the lower layer of waste paper to move to the right, and the first belt dragging the upper layer of waste paper to move to the left, so that the stacked waste paper is spread out in layers;

[0027] S2. Operate the vibrating impurity removing mechanism and the third conveyor belt assembly at the same time. The third belt receives the paper output by the second belt, and the third suction cup adsorbs the waste paper on the top surface of the third belt. The middle part of the waste paper is arched. The driving mechanism swings the bracket back and forth to shake off the impurities mixed or adhered in the paper, thereby achieving impurity removal.

[0028] The beneficial effect of the method for using a raw material screening device provided by the present invention is that by controlling the raw material screening device to screen waste paper through the method, impurities can be separated from the waste paper more thoroughly, and the impurity removal effect is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] By reading the following detailed description with reference to the accompanying drawings, the above and other objects, features and advantages of the exemplary embodiments of the present invention will become readily understood. In the accompanying drawings, several embodiments of the present invention are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0030] Figure 1 A schematic diagram of the structure of a raw material screening device provided by the present invention Figure 1 ;

[0031] Figure 2 A schematic diagram of the structure of a raw material screening device provided by the present invention Figure 2 ;

[0032] Figure 3 A schematic diagram of the structure of a raw material screening device provided by the present invention Figure 3 ;

[0033] Figure 4 A schematic diagram of the structure of an extrusion roller group in a raw material screening device provided by the present invention;

[0034] Figure 5 A schematic diagram of the structure of a bracket in a raw material screening device provided by the present invention;

[0035] Figure 6 A schematic structural diagram of a third suction cup in a raw material screening device provided by the present invention.

[0036] Description of reference numerals:

[0037] 1. Casing; 101. Inner cavity of casing; 102. Impurity collecting channel; 103. Fixing plate; 104. Arc cover plate; 105. Discharging port; 2. Outer shell; 201. Impurity removal inner cavity; 202. Impurity removal surface; 3. First active roller; 4. First belt; 401. First through hole; 5. First driven roller; 6. First suction cup; 7. Second active roller; 8. Second driven roller; 9. Second belt; 901. Second through hole; 10. Second suction cup; 11. Baffle; 12. Blowing pipe; 13. Bracket; 131. Passive plate; 132. Connection Plate; 133, impurity removal port; 14, third active roller; 15, third driven roller; 16, third belt; 161, third through hole; 17, third suction cup; 171, support plate; 172, third suction pipe; 173, third adsorption groove; 18, driving motor; 19, lever; 20, active plate; 21, fourth active roller; 22, fourth belt; 221, fourth through hole; 23, fourth suction cup; 24, fourth driven roller; 25, top squeezing roller; 26, bottom squeezing roller; 27, elastic member; 28, driving gear; 29, driven gear. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0039] The following is an embodiment of a raw material screening device provided by the present invention:

[0040] like Figure 1 , Figure 2 , Figure 3 As shown, a raw material screening device includes a casing 1, a paging mechanism, a vibration impurity removal mechanism, a baffle 11, a blowing component, a fourth conveyor belt component and a squeezing roller group.

[0041] like Figure 1 , Figure 2 , Figure 3 As shown, the housing 1 is placed on a horizontal ground, and the housing 1 has a housing cavity 101 extending left and right. The bottom of the housing 1 is provided with an impurity collection channel 102 connected to the housing cavity 101, and the impurity collection channel 102 is located in the middle of the housing 1. The front side wall and the rear side wall of the housing 1 are each provided with an impurity discharge port, and the impurity discharge port corresponds to the impurity collection channel 102 up and down. The front side wall and the rear side wall of the housing 1 are also each provided with an outer shell 2 covering the impurity discharge port on the corresponding side, and the outer shell 2 has an impurity discharge cavity 201 connected to the impurity discharge port, and the impurity discharge cavity 201 is connected to the impurity collection channel 102, and the impurity discharge cavity 201 has an impurity discharge surface 202 inclined from top to bottom toward the impurity collection channel 102. The housing 1 also includes two fixed plates 103 arranged at intervals on the left and right in the housing cavity 101. The front and rear ends of the fixed plates 103 are respectively fixed to the front inner wall and the rear inner wall of the housing 1. The two fixed plates 103 are correspondingly located above the above-mentioned impurity collection channel 102.

[0042] like Figure 2 As shown, the paging mechanism is located in the housing inner cavity 101 of the housing 1, and is located on the left side of the housing inner cavity 101. The paging mechanism includes a first conveyor belt assembly and a second conveyor belt assembly which are arranged in an upper and lower interval.

[0043] like Figure 2 As shown, the first conveyor belt assembly includes a first active roller 3, a first driven roller 5, a first belt 4 and a first suction cup 6. The first active roller 3 and the first driven roller 5 are both extended in the front-to-back direction and are arranged at intervals from left to right. The first belt 4 is sleeved on the first active roller 3 and the first driven roller 5. The first belt 4 rotates clockwise to move the lower half of the first belt 4 from right to left. The first belt 4 is provided with a plurality of first through holes 401 arranged in an array along the rotation direction of the first belt 4.

[0044] like Figure 2 As shown, the first suction cup 6 is located on the inner side of the first belt 4, and the first suction cup 6 is provided with a first suction groove with an opening facing downward, the opening end of the first suction groove is the suction end of the first suction cup 6, and the suction end of the first suction cup 6 is attached to the inner side wall of the bottom of the first belt 4. The rear side of the first suction cup 6 is connected to a first suction pipe connected to the inner cavity of the first suction groove, and the first suction pipe passes through the rear side wall of the housing 1 and extends to the outside of the housing 1. The first suction pipe is connected to the first vacuum pump to form a negative pressure in the inner cavity of the first suction groove, and the first vacuum pump is not shown in the figure.

[0045] like Figure 2 As shown, the second conveyor belt assembly includes a second active roller 7, a second driven roller 8, a second belt 9 and a second suction cup 10. The second active roller 7 and the second driven roller 8 both extend in the front-to-back direction and are arranged at intervals from left to right. The second belt 9 is sleeved on the second active roller 7 and the second driven roller 8. The second belt 9 rotates clockwise to move the upper half of the second belt 9 from left to right. The rotation speed of the second belt 9 is lower than that of the first belt 4. The second belt 9 is provided with a plurality of second through holes 901 arranged in an array along the rotation direction of the second belt 9.

[0046] like Figure 2 As shown, the second suction cup 10 is located on the inner side of the second belt 9, and the second suction cup 10 is provided with a second suction groove with an opening facing upward, the open end of the second suction groove is the suction end of the second suction cup 10, and the suction end of the second suction cup 10 is attached to the top inner side wall of the second belt 9. The rear side of the second suction cup 10 is connected to a second suction pipe connected to the inner cavity of the second suction groove, and the second suction pipe passes through the rear side wall of the housing 1 and extends to the outside of the housing 1. The second suction pipe is connected to the second vacuum pump to form a negative pressure in the inner cavity of the second suction groove, and the second vacuum pump is not shown in the figure.

[0047] like Figure 2 As shown, the second conveyor belt assembly is longer than the first conveyor belt assembly in the left-right direction, the left end of the second conveyor belt assembly protrudes leftward from the first conveyor belt assembly, and the right end of the second conveyor belt assembly protrudes rightward from the first conveyor belt assembly.

[0048] When the first transmission belt assembly and the second conveyor belt assembly are in operation, the suction force of the first suction cup 6 is smaller than the suction force of the second suction cup 10. When the stacked paper moves between the first conveyor belt assembly and the second conveyor belt assembly, since the upper layer of paper is far away from the second belt 9 and there is paper in between, the upper layer of paper is subject to less suction force of the second belt 9, and therefore will be adsorbed by the first belt 4 and moved to the left, while the second belt 9 adsorbs the remaining paper and moves to the right. After moving to the left and right of the two layers of paper, the paper adsorbed on the first belt 4 is adsorbed onto the second belt 9, and the first belt 4 continues to adsorb the upper layer of the stacked paper on the far right of the second belt 9 and transports these papers to the left. After the paper is moved to the far left of all the papers on the second belt 9, it is adsorbed by the second belt 9 again, and this is repeated until the rightmost paper of the second belt 9 cannot be adsorbed by the first belt 4, and finally the stacked paper is layered. Most of the paper is divided into a single layer, and the paper that is strongly adhered together cannot be separated at this link, and will remain in a multi-layer state of being adhered together and transported to the right.

[0049] like Figure 2 , Figure 3 As shown, the vibration impurity removal mechanism includes a bracket 13, a third conveyor belt assembly and a driving mechanism.

[0050] like Figure 2 , Figure 5 As shown, the bracket 13 is slidably assembled on the housing 1 along the front-to-back direction and is located above the above-mentioned fixed plate 103. The bracket 13 has a accommodating space that passes through from left to right. The front side wall and the rear side wall of the bracket 13 are both provided with a debris removal port 133 that is connected to the accommodating space. The debris removal port 133 is directly opposite to the debris removal port on the housing 1 from front to back. The bracket 13 includes three passive dial plates 131 arranged at equal intervals in the left-to-right direction at the bottom. The bracket 13 is provided with a connecting plate 132 on both the front and rear sides of each passive dial plate 131. The connecting plate 132 is connected to an elastic member 27. The elastic member 27 is a compression spring that can be extended and retracted forward and backward. The end of the elastic member 27 that faces away from the connecting plate 132 is fixedly connected to the housing 1.

[0051] like Figure 2As shown, the third conveyor belt assembly is mounted on the bracket 13 and is located in the accommodation space on the bracket 13. The third conveyor belt assembly is at the same height as the second conveyor belt assembly, and a gap smaller than the width of the paper is provided between the third conveyor belt assembly and the second conveyor belt assembly in the left-right direction. The third conveyor belt assembly includes a third active roller 14, a third driven roller 15, a third belt 16 and a third suction cup 17. The third active roller 14 and the third driven roller 15 both extend in the front-to-back direction and are arranged at intervals from left to right. The third belt 16 is sleeved on the third active roller 14 and the third driven roller 15. The third belt 16 rotates clockwise to move the upper half of the third belt 16 from left to right. The third belt 16 is provided with a plurality of third through holes 161 arranged in an array along the rotation direction of the third belt 16.

[0052] The third suction cup 17 is located on the inner side of the third belt 16. Figure 6 As shown, the third suction cup 17 is provided with a third suction groove 173 with an opening facing upward, the opening end of the third suction groove 173 is the suction end of the third suction cup 17, and the suction end of the third suction cup 17 is connected to a support plate 171 extending left and right and convex upward in the middle, as shown in FIG. Figure 2 As shown, the suction end of the third suction cup 17 is pressed against the top inner side wall of the third belt 16, and the support plate 171 is pressed against the top inner side wall of the third belt 16, so that the middle part of the third belt 16 is arched upward, and a third suction pipe 172 connected to the inner cavity of the third suction groove 173 is provided at the rear side of the third suction cup 17, and the third suction pipe 172 passes through the rear side wall of the housing 1 and extends to the outside of the housing 1. The third suction pipe 172 is connected to the third vacuum pump to form a negative pressure in the inner cavity of the third suction groove 173, and the third vacuum pump is not shown in the figure.

[0053] like Figure 2 As shown, the driving mechanism is located below the bracket 13, and the driving mechanism includes a driving motor 18, a lever 19, and an active lever plate 20. The driving motor 18 is fixedly mounted on the fixed plate 103 on the right side, and the lever 19 extends in the left-right direction. The lever 19 is connected to the output shaft end of the driving motor 18 by transmission, and the end of the lever 19 facing away from the driving motor 18 is rotatably mounted on the fixed plate 103 on the left side. There are three active lever plates 20, and the three active lever plates 20 are fixedly connected to the lever 19 and arranged at equal intervals in the left-right direction. The three active lever plates 20 are respectively blocked by the three passive lever plates 131 in the rotation direction of the lever 19, so that when the driving motor 18 drives the lever 19 to rotate, the passive lever plate 131 is moved by the active lever plate 20, thereby driving the bracket 13 to shake forward and backward.

[0054] The suction force of the third suction cup 17 can only absorb light and thin paper, but cannot absorb impurities such as stones, plasticine, staples, etc. with a certain weight that are mixed or adhered to the paper. Therefore, when the vibration impurity removal mechanism shakes back and forth, the paper and the impurities can be separated.

[0055] like Figure 2 As shown, the baffle 11 is located in the inner cavity 101 of the housing 1, and the baffle 11 is arranged above the second conveyor belt assembly and the third conveyor belt assembly, just opposite to the interval between the second conveyor belt assembly and the third conveyor belt assembly.

[0056] like Figure 2 As shown, the blowing assembly includes a blowing pipe 12, which extends in the front-to-back direction and is located below the second driven roller 8. The side wall of the blowing pipe 12 is provided with a blowing hole inclined toward the interval between the second conveyor belt assembly and the third conveyor belt assembly. The front end of the blowing pipe 12 is closed, and the rear end is provided with an opening. The rear end of the blowing pipe 12 is connected to a blower through a connecting hose. The blower is used for blowing air into the inner cavity of the blowing pipe 12 through the connecting hose. The connecting hose and the blower are not shown in the figure.

[0057] like Figure 2 As shown, the fourth conveyor belt assembly is located on the right side of the vibration impurity removal mechanism, and the fourth conveyor belt assembly is at the same height as the third conveyor belt assembly. The fourth conveyor belt assembly includes a fourth active roller 21, a fourth driven roller 24, a fourth belt 22, and a fourth suction cup 23. The fourth active roller 21 and the fourth driven roller 24 both extend in the front-to-back direction and are arranged at intervals from left to right. The fourth belt 22 is sleeved on the fourth active roller 21 and the fourth driven roller 24. The fourth belt 22 rotates clockwise to move the upper half of the fourth belt 22 from left to right. The fourth belt 22 is provided with a plurality of fourth through holes 221 arranged in an array along the rotation direction of the fourth belt 22.

[0058] like Figure 2 As shown, the fourth suction cup 23 is located on the inner side of the fourth belt 22, and the fourth suction cup 23 is provided with a fourth adsorption groove with an opening facing upward, the open end of the fourth adsorption groove is the adsorption end of the fourth suction cup 23, and the adsorption end of the fourth suction cup 23 is attached to the top inner side wall of the fourth belt 22, and the rear side of the fourth suction cup 23 is connected to a fourth suction pipe connected to the inner cavity of the fourth adsorption groove, and the fourth suction pipe passes through the rear side wall of the housing 1 and extends to the outside of the housing 1. The fourth suction pipe is connected to the fourth vacuum pump to form a negative pressure in the inner cavity of the fourth adsorption groove, and the fourth vacuum pump is not shown in the figure.

[0059] The specific structures of the first suction cup 6, the second suction cup 10 and the fourth suction cup 23 can be referred to Figure 6 The structure of the third suction cup 17 in the embodiment is different in that the support plate 171 is not provided in the first suction cup 6, the second suction cup 10 and the fourth suction cup 23.

[0060] like Figure 2As shown, the squeezing roller group is located on the right side of the fourth transmission belt assembly, and the squeezing roller group includes a top squeezing roller 25 and a bottom squeezing roller 26. The top squeezing roller 25 and the bottom squeezing roller 26 both extend in the front-to-back direction and are rotatably assembled on the casing 1. A discharge port 105 penetrating left and right is provided in the middle of the right side wall of the casing 1. Two arc-shaped cover plates 104 are provided in the casing inner cavity 101. The two arc-shaped cover plates 104 are respectively located on the upper and lower sides of the discharge port 105. The openings of the two arc-shaped cover plates 104 are opposite to each other. The top squeezing roller 25 and the bottom squeezing roller 26 are respectively coaxially arranged in the two arc-shaped cover plates 104.

[0061] The interiors of the top squeezing roller 25 and the bottom squeezing roller 26 are both hollow, and a plurality of air suction holes are provided on the side walls. The squeezing area between the top squeezing roller 25 and the bottom squeezing roller 26 is opposite to the top surface of the fourth conveyor belt on the left and right.

[0062] like Figure 4 As shown, the front end of the top squeeze roller 25 is coaxially fixedly connected with a driving gear 28, and the front end of the bottom squeeze roller 26 is coaxially fixedly connected with a driven gear 29 meshing with the driving gear 28. The number of teeth of the driving gear 28 is greater than the number of teeth of the driven gear 29, so that a speed difference is formed between the top squeeze roller 25 and the bottom squeeze roller 26. The rear ends of the top squeeze roller 25 and the bottom squeeze roller 26 both pass through the rear side wall of the housing 1 and extend to the outside of the housing 1. The rear ends of the top squeeze roller 25 and the bottom squeeze roller 26 are both provided with openings. The rear ends of the top squeeze roller 25 and the bottom squeeze roller 26 are connected to a fifth vacuum pump, which is not shown in the figure.

[0063] When the double-layered paper stuck together passes between the top squeezing roller 25 and the bottom squeezing roller 26, since the top squeezing roller 25 and the bottom squeezing roller 26 have the same direction of rotation and different rotation speeds, the paper can be twisted apart and become a single layer, which is convenient for subsequent processing.

[0064] The present invention can effectively remove impurities mixed in the waste paper by first stratifying the stacked waste paper and then vibrating and screening the stratified waste paper, and the impurity removal effect is better.

[0065] The present invention also provides a method for using the raw material screening device, the method comprising the following steps:

[0066] S1. Place the stacked waste paper at the input end of the second conveyor belt assembly, operate the first conveyor belt assembly and the second conveyor belt assembly, so that the first suction cup 6 adsorbs the upper layer of waste paper on the bottom surface of the first belt 4, and the second suction cup 10 adsorbs the lower layer of waste paper on the top surface of the second belt 9, the second belt 9 drags the lower layer of waste paper to the right, and the first belt 4 drags the upper layer of waste paper to the left, so that the stacked waste paper is spread out in layers;

[0067] S2, operate the vibration impurity removal mechanism and the third conveyor belt assembly at the same time, the third belt 16 receives the paper output by the second belt 9, the third suction cup 17 adsorbs the waste paper on the top surface of the third belt 16 to bend the waste paper, and the bracket 13 shakes back and forth to shake off the impurities mixed or adhered in the paper to achieve impurity removal;

[0068] S3, the third conveyor belt assembly conveys the paper to the fourth conveyor belt assembly, and the fourth conveyor belt assembly conveys the paper to the squeezing area of ​​the squeezing roller group, and the squeezing roller group crushes the impurities firmly adhered to the paper, and the crushed impurities fall off the paper.

Claims

1. A raw material screening device, comprising a housing, characterized in that: Also includes: A paging mechanism and a vibration cleaning mechanism are arranged inside the housing and arranged sequentially from left to right; The paging mechanism includes a first conveyor belt assembly and a second conveyor belt assembly which are arranged at intervals from top to bottom and both convey in the left-right direction; the first conveyor belt assembly includes a first belt and a first suction cup which is arranged on the inner side of the first belt and abuts on the inner side wall of the bottom of the first belt, the first belt is provided with a plurality of first through holes arranged in an array, the first suction cup is used to absorb the paper located in the upper layer onto the lower surface of the first belt through the first through holes; the second conveyor belt assembly includes a second belt and a second suction cup which is arranged on the inner side of the second belt and abuts on the inner side wall of the top of the second belt, the second belt is provided with a plurality of second through holes arranged in an array, the second suction cup is used to absorb the paper located in the lower layer onto the upper surface of the second belt through the second through holes, the lower half of the first belt moves from right to left, and the upper half of the second belt moves from left to right; The vibration impurity removal mechanism includes a bracket movably mounted on the housing forward and backward, a third conveyor belt assembly mounted on the bracket and having the same height as the second conveyor belt assembly, and a driving mechanism cooperating with the bracket to drive the bracket to swing forward and backward. The third conveyor belt assembly includes a third belt having a plurality of third through holes arranged in an array and a third suction cup located on the inner side of the third belt and abutting against the inner side wall of the top of the third belt. The suction end of the third suction cup is provided with a support plate extending left and right and protruding upward in the middle. The upper half of the third belt is pushed upward by the support plate. The second conveyor belt assembly is longer than the first conveyor belt assembly in the left-right direction, the left end of the second conveyor belt assembly protrudes leftward from the first conveyor belt assembly, the right end of the second conveyor belt assembly protrudes rightward from the first conveyor belt assembly, and the suction force of the first suction cup is smaller than the suction force of the second suction cup.

2. A raw material screening device according to claim 1, characterized in that: A gap smaller than the paper width is provided between the third conveyor belt assembly and the second conveyor belt assembly, a baffle corresponding to the gap is provided above the second conveyor belt assembly and the third conveyor belt assembly, and a blowing assembly is provided below the second conveyor belt assembly, and the blowing assembly is used to blow air toward the gap so that the paper output by the second conveyor belt assembly fits against the bottom surface of the baffle.

3. A raw material screening device according to claim 1, characterized in that: An elastic member capable of extending forward and backward is connected between the bracket and the casing, the bracket includes a passive paddle plate, the driving mechanism includes a driving motor, a paddle rod and an active paddle plate, the paddle rod extends in the left-right direction and is connected to the driving output end of the driving motor, the active paddle plate is connected to the outer side wall of the paddle rod, the active paddle plate and the passive paddle plate block each other in the circumferential direction of the paddle rod, and when the paddle rod is driven to rotate by the driving motor, the passive paddle plate can be paddled through the active paddle plate, thereby driving the bracket to swing forward and backward.

4. A raw material screening device according to any one of claims 1 to 3, characterized in that: The front and rear side walls of the housing are each provided with a debris discharge port, the debris discharge port is opposite to the top surface of the third belt, and the debris discharge port is used for discharging impurities shaken off from the paper on the third belt.

5. A raw material screening device according to any one of claims 1 to 3, characterized in that: A squeezing roller group is provided on the right side of the vibrating impurity removing mechanism, which includes a top squeezing roller and a bottom squeezing roller which are arranged in sequence up and down and extend forward and backward, and a squeezing area between the top squeezing roller and the bottom squeezing roller is opposite to the top surface of the third belt.

6. A raw material screening device according to claim 5, characterized in that: A fourth conveyor belt assembly having the same height as the third conveyor belt assembly is provided on the right side of the third conveyor belt assembly, the fourth conveyor belt assembly includes a fourth belt having a plurality of fourth through holes arranged in an array and a fourth suction cup located on the inner side of the fourth belt and abutting against the top inner wall of the fourth belt, and the extrusion roller group is provided on the right side of the fourth conveyor belt assembly.

7. A method for using a raw material screening device, applied to a raw material screening device as claimed in any one of claims 1 to 4, the method comprising the following steps: S1. placing the stacked waste paper at the input end of the second conveyor belt assembly, operating the first conveyor belt assembly and the second conveyor belt assembly, causing the first suction cup to absorb the upper layer of waste paper onto the bottom surface of the first belt, causing the second suction cup to absorb the lower layer of waste paper onto the top surface of the second belt, the second belt dragging the lower layer of waste paper to move to the right, and the first belt dragging the upper layer of waste paper to move to the left, so that the stacked waste paper is spread out in layers; S2. Operate the vibrating impurity removing mechanism and the third conveyor belt assembly at the same time. The third belt receives the paper output by the second belt, and the third suction cup adsorbs the waste paper on the top surface of the third belt. The middle part of the waste paper is arched. The driving mechanism swings the bracket back and forth to shake off the impurities mixed or adhered in the paper, thereby achieving impurity removal.

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