Plastic screening and separation equipment and screening method for recycling waste plastics

Abstract

The present invention relates to the technical field of waste plastic screening, and discloses a plastic screening and separation device and a screening method for waste plastic recycling, comprising a separation bin, two material distribution channels fixedly installed on the separation bin, a screening drum and a driving source installed on the separation bin, a front adjusting member and a rear adjusting member provided at both ends of the screening drum, a driving member provided at both ends of the screening drum, a control member provided on one side of the separation bin, and a linkage member provided between the driving member and the control member; the screening drum comprises a plurality of material blocking rods and a material blocking net; the driving member comprises a driving rod. The present invention adjusts the distance between the two material blocking rods by the front adjusting member, and drives the plurality of material blocking nets to unfold by the rear adjusting member to screen impurities in plastic products, thereby solving the problem that the distance between the material blocking rods and the installation of the material blocking net plate of the screening drum on the traditional separator are both installed and disassembled by screws, and it is difficult to quickly adjust the distance between the material blocking rods and install the material blocking net plate.

Description

Technical Field

[0001] The present invention relates to the technical field of waste plastic screening, in particular to a plastic screening and separation device and a screening method for recycling waste plastic. Background Art

[0002] Plastic screening and separation equipment is a device that removes impurities of various sizes from waste plastics. The retaining rods on the screening drum in traditional separators are all installed and fixed by screws. The number of retaining rods is added or reduced on the screening drum according to the size of the impurities that need to be removed. When smaller impurities need to be removed, the retaining rods need to be removed and the retaining mesh plates need to be installed by screws. The operation is complicated and it is difficult to quickly adjust the distance between the retaining rods and install the retaining mesh plates. Summary of the Invention

[0003] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0004] A plastic screening and separation device comprises a separation bin, two material distribution channels are fixedly mounted on the separation bin, a screening drum and a driving source are mounted on the separation bin, a front adjusting member and a rear adjusting member are respectively provided at both ends of the screening drum, a driving member is provided at both ends of the screening drum, the driving member and the front adjusting member and the rear adjusting member are powered, a control member is provided on one side of the separation bin, a linkage member is provided between the driving member and the control member, and power is transmitted between the driving member and the linkage member;

[0005] The screening drum includes a plurality of material blocking rods and a material blocking net, the front adjusting member controls the movement of the plurality of material blocking rods, and the rear adjusting member controls the winding of the plurality of material blocking nets;

[0006] The driving member includes a driving rod, and the control member drives the connecting member on one side to operate. The connecting member drives the driving rod to move toward the screening drum and contacts the front adjusting member or the rear adjusting member. The connecting member drives the driving rod to rotate, thereby adjusting the distance between the multiple material blocking rods and adjusting the winding of the material blocking net.

[0007] The cam is fixedly provided with a first end of a shaft, and the second end of the shaft is fixedly provided with a first end of a shaft, and the second end of the shaft is connected with the first end of the shaft to the cam.

[0008] Preferably, the front adjusting member includes a sliding block and a fixed block, the fixed block is fixedly mounted on the front fixed ring, a sliding groove is provided on the front fixed ring, the sliding block is slidably arranged in the sliding groove, an inner groove is provided on one side of the rear fixed ring, one end of a part of the material stopping rod is fixed to one end of the sliding block, and the other end is slidably arranged in the inner groove, and the other end of the material stopping rod is respectively fixed to the fixed block and the rear fixed ring.

[0009] Preferably, the front adjusting member further comprises a front hinge block, which is provided at one end of the sliding block and movably hinged to the sliding block, and two first torsion springs in opposite directions are fixedly installed at the hinge between the front hinge block and the sliding block.

[0010] Preferably, the rear adjusting member includes a gear and a baffle, and an active rod and a driven rod are fixedly connected on both sides of the material blocking net. A plurality of arc holes are provided on the inner fixing ring, and a plurality of arc grooves are provided on one side of the front fixing ring. One end of the active rod is slidably arranged in the arc hole, and the other end is rotatably connected to one side of the front fixing ring through a bearing. Both ends of the driven rod are slidably arranged in the arc groove and the arc hole, respectively. One end of the material blocking net is wound on the outer surface of the active rod, the gear is fixedly installed on one end of the active rod, and the baffle is fixedly installed on one end of the driven rod.

[0011] Preferably, the rear adjusting member also includes an annular plate, a plurality of tooth plates are fixedly connected to the annular plate, the tooth plates are meshed with gears, a plurality of clamping plates are fixedly connected to the annular plate, the baffle is arranged in the two clamping plates, a plurality of rear hinge blocks are hinged on one side of the annular plate, and two second torsion springs with opposite directions are fixedly installed at the hinge between the rear hinge block and the annular plate.

[0012] Preferably, the control component includes a bidirectional motor, support plates are fixedly connected at both ends of one side of the separation bin, and a reciprocating screw rod is rotatably connected to one side of the support plate through a bearing. The bidirectional motor is fixedly installed on one side of the separation bin, and the output end of the bidirectional motor is rotatably connected to the two reciprocating screw rods through a one-way bearing.

[0013] Preferably, the connecting part includes a first transmission belt, a slave sleeve is sleeved on the center rod, a main sleeve is assembled on the reciprocating screw rod through a thread, guide grooves are provided at both ends of one side of the separation chamber, connecting plates are sleeved on the outer periphery of the main sleeve and the slave sleeve, the connecting plates are slidably arranged in the guide grooves, multiple driving rods are fixedly installed on the outer periphery of the slave sleeve, an outer sleeve is sleeved on the outer periphery of the main sleeve, and first pulleys are fixedly installed on the outer peripheries of the main sleeve and the outer sleeve, and the first transmission belt is sleeved on the outer peripheries of the two first pulleys.

[0014] Preferably, the linkage also includes a second transmission belt, a guide rail is provided on one side of the separation bin, a moving seat is slidably connected to the guide rail, a second pulley is installed on one side of the moving seat and the outer sleeve, one of the second pulleys is rotatably arranged on one side of the moving seat through a bearing, and the other second pulley is fixedly installed on the outer sleeve, the second transmission belt is sleeved on the outer circumference of the two second pulleys, a fixing plate is fixedly connected between the moving seat and the main sleeve, a third motor is fixedly installed on one side of the moving seat, and the output end of the third motor is fixedly connected to one of the second pulleys.

[0015] The screening method for recycling waste plastics uses a plastic screening and separation device, and the specific steps are as follows:

[0016] The distance between the blocking rods on the screening drum is adjusted according to the size of the plastic to be screened. The control part runs forward, driving the linking part on one side of the screening drum to run, thereby driving the driving part on one side of the screening drum and the front adjusting part to transmit power, thereby adjusting the distance between two adjacent blocking rods. When it is necessary to screen out plastic products that are too small, the control part runs reversely, driving the linking part on the other side of the screening drum to run, thereby driving the driving part on the other side of the screening drum and the rear adjusting part to transmit power, thereby driving multiple blocking nets to unfold, and making multiple blocking nets connected end to end to form a A whole cylindrical retaining net is used to screen out plastic products that are too small. After adjusting the screening cylinder, the driving source is used to drive the screening cylinder to rotate, and the plastic products are put into the screening cylinder at the same time. During the rotation of the screening cylinder, some plastic products are blocked by the retaining rod or the retaining net and stay in the screening cylinder. They move to the distribution channel at the upper part of one end of the separation bin through the lower port of the screening cylinder. The other part of the plastic products passes through the gap between the two retaining rods or the mesh of the retaining net and falls down to the distribution channel at the bottom of the separation bin, thereby achieving the purpose of plastic screening. Beneficial effects

[0017] Compared with the prior art, the present invention provides a plastic screening and separation device and a screening method for recycling waste plastics, which has the following beneficial effects:

[0018] 1. A plastic screening and separation device and a screening method for recycling waste plastics. When the distance between the blocking rods on the screening drum needs to be adjusted, the front adjusting member is set to drive one of the two adjacent blocking rods to move, thereby adjusting the distance between the two blocking rods. When smaller impurities need to be screened, the rear adjusting member is set to drive multiple blocking nets to unfold, thereby forming a cylindrical blocking net and screening the impurities in the plastic products. This solves the problem that the screening drum on the traditional separator needs to adjust the distance of the blocking rods and install the blocking net plate, which requires installation and disassembly through screws, making it difficult to quickly adjust the distance between the blocking rods and install the blocking net plate.

[0019] 2. A plastic screening and separation device and a screening method for recycling waste plastics. The material retaining rod and the material retaining net on the screening drum in the separator need to be used separately. The output ends of the bidirectional motor in the control component are connected to one end of the reciprocating screw through a one-way bearing. When the bidirectional motor controls the operation of the front adjusting component and adjusts the material retaining rod, the bidirectional motor cannot control the operation of the rear adjusting component, thereby achieving the effect of separately controlling the rear adjusting component and the front adjusting component. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is one of the overall structural schematic diagrams of a plastic screening and separation device of the present invention;

[0021] Figure 2 This is the second schematic diagram of the overall structure of a plastic screening and separation device of the present invention;

[0022] Figure 3 This is a schematic structural diagram of the front adjusting member of the present invention;

[0023] Figure 4 For the present invention Figure 3 Schematic diagram of the structure of the middle part A;

[0024] Figure 5 For the present invention Figure 3 Schematic diagram of the structure of the middle part B;

[0025] Figure 6 This is one of the structural diagrams of the rear adjustment member of the present invention;

[0026] Figure 7 For the present invention Figure 6 Schematic diagram of the structure of the middle C part;

[0027] Figure 8 For the present invention Figure 6 Schematic diagram of the structure of the middle D part;

[0028] Figure 9 This is the second structural diagram of the rear adjustment member of the present invention;

[0029] Figure 10 For the present invention Figure 9 Schematic diagram of the structure of the middle E part;

[0030] Figure 11 Schematic diagram of the rear control member and the linkage member structure of the present invention;

[0031] Figure 12 For the present invention Figure 11 Schematic diagram of the structure of the middle F part.

[0032] In the figure: 1, separation bin; 2, material distribution channel; 3, screening drum; 4, driving source; 5, front adjusting member; 6, rear adjusting member; 7, driving member; 8, control member; 9, connecting member; 31, material blocking rod; 32, material blocking net; 71, driving rod; 33, center rod; 34, fixed seat; 35, bearing seat; 41, first motor; 36, front fixing ring; 37, rear fixing ring; 38, collar; 39, front connecting rod; 310, inner fixing ring; 311, clamping block; 312, rear connecting rod; 51, sliding block; 52, fixing block; 53, sliding groove; 54, inner groove; 55, front hinge block; 56, first Torsion spring; 61. Gear; 62. Baffle; 63. Active rod; 64. Driven rod; 65. Arc hole; 66. Arc groove; 67. Annular plate; 68. Tooth plate; 69. Clamp; 610. Rear hinge block; 611. Second torsion spring; 81. Bidirectional motor; 82. Support plate; 83. Reciprocating screw; 91. First transmission belt; 92. Slave sleeve; 93. Master sleeve; 94. Guide groove; 95. Connecting plate; 96. Outer sleeve; 97. First pulley; 98. Second transmission belt; 99. Guide rail; 910. Moving seat; 911. Second pulley; 912. Fixed plate; 913. Third motor. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] As introduced in the background technology, in order to solve the deficiencies in the existing technology, this application proposes a plastic screening and separation device and a screening method for recycling waste plastics.

[0035] Example 1

[0036] See also Figure 1-Figure 2 A plastic screening and separation device includes a separation bin 1, two material distribution channels 2 are fixedly installed on the separation bin 1, a screening drum 3 and a driving source 4 are installed on the separation bin 1, a front adjusting member 5 and a rear adjusting member 6 are respectively provided at both ends of the screening drum 3, and a driving member 7 is provided at both ends of the screening drum 3. The driving member 7 and the front adjusting member 5 and the rear adjusting member 6 are powered by transmission. A control member 8 is provided on one side of the separation bin 1, and a linking member 9 is provided between the driving member 7 and the control member 8. Power transmission is between the driving member 7 and the linking member 9;

[0037] The screening drum 3 includes a plurality of blocking rods 31 and a blocking net 32. The front adjusting member 5 controls the movement of the plurality of blocking rods 31, and the rear adjusting member 6 controls the winding of the plurality of blocking nets 32.

[0038] The driving member 7 includes a driving rod 71, and the control member 8 drives the connecting member 9 on one side to operate. The connecting member 9 drives the driving rod 71 to move toward the screening drum 3 and contacts the front adjusting member 5 or the rear adjusting member 6. The connecting member 9 drives the driving rod 71 to rotate, thereby adjusting the distance between the multiple material blocking rods 31 and adjusting the winding of the material blocking net 32.

[0039] Specifically, the distance between the blocking rods 31 on the screening drum 3 is adjusted according to the size of the plastic to be screened, and the control member 8 runs forward to drive the connecting member 9 on one side of the screening drum 3 to run, thereby driving the driving member 7 on one side of the screening drum 3 and the front adjusting member 5 to transmit power, thereby adjusting the distance between the two adjacent blocking rods 31. When it is necessary to screen out plastic products that are too small, the control member 8 runs reversely to drive the connecting member 9 on the other side of the screening drum 3 to run, thereby driving the driving member 7 on the other side of the screening drum 3 and the rear adjusting member 6 to transmit power, thereby driving multiple blocking nets 32 to unfold, and making multiple blocking nets 32 connected end to end. A whole cylindrical material retaining net 32 ​​is formed to screen out plastic products that are too small. After adjusting the screening drum 3, the screening drum 3 is driven to rotate by the driving source 4, and the plastic products are put into the screening drum 3. During the rotation of the screening drum 3, some plastic products are blocked by the retaining rod 31 or the retaining net 32 ​​and stay in the screening drum 3. They move to the distribution channel 2 at the upper part of one end of the separation bin 1 through the lower port of the screening drum 3. The other part of the plastic products passes through the gap between the two retaining rods 31 or the mesh of the retaining net 32 ​​and falls downward onto the distribution channel 2 at the bottom of the separation bin 1, thereby achieving the purpose of plastic screening.

[0040] By setting the front adjusting member 5, one of the two adjacent blocking rods 31 is driven to move, thereby adjusting the distance between the two blocking rods 31. When it is necessary to screen smaller impurities, the rear adjusting member 6 is set to drive multiple blocking nets 32 to unfold, thereby forming a cylindrical blocking net 32, and screening impurities in plastic products. This solves the problem that when the screening cylinder 3 on the traditional separator adjusts the distance of the blocking rods 31 and installs the blocking net 32 ​​plate, both processes need to be installed and disassembled by screws, and it is difficult to quickly adjust the distance between the blocking rods 31 and install the blocking net 32 ​​plate.

[0041] Example 2

[0042] The difference from the above embodiment 1 is that, see Figure 1-Figure 5 , for the above-mentioned screening drum 3, the screening drum 3 also includes a center rod 33, a fixed seat 34 is fixedly connected to one side of the separation bin 1, a bearing seat 35 is fixedly installed on the fixed seat 34, one end of the center rod 33 is rotatably connected to the bearing seat 35 through a bearing, and the other end is rotatably connected to the separation bin 1 through a bearing, the driving source 4 includes a first motor 41, the first motor 41 is fixedly mounted on the separation bin 1, and the output end of the first motor 41 is fixedly connected to one end of the center rod 33, the screening drum 3 also includes a front fixing ring 36 and a rear fixing ring The fixed ring 37 and the center rod 33 are sleeved with two collars 38. A front connecting rod 39 is fixedly connected between the front fixed ring 36 and one of the collars 38. An inner fixed ring 310 is provided in the rear fixed ring 37. The inner cavity of the rear fixed ring 37 is provided with a plurality of slots. The outer periphery of the inner fixed ring 310 is fixedly connected with a plurality of blocks 311 that match the slots. The outer periphery of the other collar 38 is fixedly connected with a plurality of rear connecting rods 312. The inner side of the inner fixed ring 310 is provided with a plurality of slide grooves. One end of the rear connecting rod 312 is slidably arranged in the slide groove.

[0043] Specifically, the first motor 41 runs, driving the center rod 33 to rotate, thereby driving the ring 38 fixedly connected to the center rod 33 and the front connecting rod 39 and the rear connecting rod 312 on the ring 38 to rotate with the center rod 33 as the axis, thereby driving the front fixing ring 36 and the rear fixing ring 37 to rotate, and then the entire screening drum 3 rotates, and the plastic products are put into the screening drum 3 at the same time. During the rotation of the screening drum 3, a part of the plastic products remain in the screening drum 3 through the obstruction of the blocking rod 31 or the blocking net 32, and move to the distribution channel 2 at the upper part of one end of the separation bin 1 through the lower port of the screening drum 3, and the other part of the plastic products pass through the gap between the two blocking rods 31 or the mesh of the blocking net 32, and fall downward to the distribution channel 2 at the bottom of the separation bin 1, thereby achieving the purpose of plastic screening.

[0044] Example 3

[0045] The difference from the above embodiment 2 is that, see Figure 3-Figure 5, for the above-mentioned front adjusting member 5, the front adjusting member 5 includes a sliding block 51 and a fixed block 52, the fixed block 52 is fixedly mounted on the front fixing ring 36, a sliding groove 53 is opened on the front fixing ring 36, the sliding block 51 is slidably arranged in the sliding groove 53, and an inner groove 54 is opened on one side of the rear fixing ring 37, wherein one end of a part of the blocking rod 31 is fixed to one end of the sliding block 51, and the other end is slidably arranged in the inner groove 54, and the two ends of the other part of the blocking rod 31 are respectively fixed on the fixed block 52 and the rear fixing ring 37;

[0046] The front adjusting member 5 further includes a front hinge block 55, which is provided at one end of the sliding block 51 and is movably hinged to the sliding block 51. Two first torsion springs 56 with opposite directions are fixedly installed at the hinge between the front hinge block 55 and the sliding block 51.

[0047] When the distance between the two stop rods 31 needs to be reduced, the linking member 9 is operated in the reverse direction, causing the driving rod 71 to move in the reverse direction and reset through the setting of the reciprocating screw rod 83, thereby disengaging from the front hinge block 55, avoiding collision between the front hinge block 55 and the driving rod 71 when the screening drum 3 rotates.

[0048] Example 4

[0049] The difference from the above embodiment 3 is that, see Figures 6-10 , for the above-mentioned rear adjusting member 6, the rear adjusting member 6 includes a gear 61 and a baffle 62, and the two sides of the material retaining net 32 ​​are fixedly connected to the active rod 63 and the driven rod 64 respectively. A plurality of arc holes 65 are opened on the inner fixing ring 310, and a plurality of arc grooves 66 are opened on one side of the front fixing ring 36. One end of the active rod 63 is slidably arranged in the arc hole 65, and the other end is rotatably connected to one side of the front fixing ring 36 through a bearing. The two ends of the driven rod 64 are respectively slidably arranged in the arc groove 66 and the arc hole 65. One end of the material retaining net 32 ​​is wound around the outer surface of the active rod 63, the gear 61 is fixedly mounted on one end of the active rod 63, and the baffle 62 is fixedly mounted on one end of the driven rod 64;

[0050] The rear adjustment member 6 also includes an annular plate 67, a plurality of tooth plates 68 are fixedly connected to the annular plate 67, the tooth plates 68 are meshed with the gear 61, a plurality of clamping plates 69 are fixedly connected to the annular plate 67, the baffle 62 is arranged in the two clamping plates 69, a plurality of rear hinge blocks 610 are hinged to one side of the annular plate 67, and two second torsion springs 611 in opposite directions are fixedly installed at the hinge between the rear hinge block 610 and the annular plate 67;

[0051] Specifically, the control member 8 drives the linkage member 9 to operate, thereby driving the driving member 7 to move toward the rear adjustment member 6, so that the driving rod 71 in the driving member 7 moves to the side of the annular plate 67, and the linkage member 9 continues to operate, and drives the driving rod 71 to rotate with the center rod 33 as the axis, so that one side of the driving rod 71 contacts the side of the rear hinge block 610, and drives the rear hinge block 610 to rotate with the center rod 33 as the axis, thereby driving the annular plate 67 to rotate, through the engagement between the toothed plate 68 inside the annular plate 67 and the gear 61 The connecting member 9 drives the active rod 63 to rotate, and at the same time, the baffle 62 is arranged in the two stirring bodies, so that when the annular plate 67 rotates, the clamping plate 69 drives the baffle 62 to move, thereby moving the driven rod 64, and then the material blocking net 32 ​​is unfolded. When the material blocking net 32 ​​needs to be reset and reeled on the active rod 63, the connecting member 9 runs in the reverse direction, causing the annular plate 67 to rotate in the reverse direction, thereby causing the material blocking net 32 ​​to be reeled on the active rod 63. When the reeling net is fully unfolded, the control member 8 continues to run, driving the driving rod 71 to move in the reverse direction and reset.

[0052] Example 5

[0053] The difference from the above-mentioned fourth embodiment is that, see Figure 11-12 , as for the above-mentioned control component 8, the control component 8 includes a bidirectional motor 81, and support plates 82 are fixedly connected at both ends of one side of the separation chamber 1. One side of the support plate 82 is rotatably connected to a reciprocating screw rod 83 through a bearing. The bidirectional motor 81 is fixedly installed on one side of the separation chamber 1, and the output ends of the bidirectional motor 81 are rotatably connected to the two reciprocating screw rods 83 through one-way bearings respectively;

[0054] Specifically, the output ends on both sides of the bidirectional motor 81 are respectively connected to one end of the two reciprocating screws 83 through one-way bearings, so that when the bidirectional motor 81 runs in the forward direction, the bidirectional motor 81 drives the reciprocating screw 83 at one end to rotate, and the reciprocating screw 83 at the other end cannot rotate.

[0055] Example 6

[0056] The difference from the above embodiment 5 is that, see Figure 11-12As for the above-mentioned linkage 9, the linkage 9 includes a first transmission belt 91, a slave sleeve 92 is sleeved on the center rod 33, a main sleeve 93 is assembled on the reciprocating screw rod 83 by threading, and guide grooves 94 are provided at both ends of one side of the separation chamber 1. A connecting plate 95 is sleeved on the outer periphery of the main sleeve 93 and the slave sleeve 92. The connecting plate 95 is slidably arranged in the guide groove 94. A plurality of driving rods 71 ​​are fixedly mounted on the outer periphery of the slave sleeve 92, and an outer sleeve 96 is sleeved on the outer periphery of the main sleeve 93. A first pulley 97 is fixedly mounted on the outer periphery of each of the main sleeve 93 and the outer sleeve 96. The first transmission belt 91 is sleeved on the outer periphery of the two first pulleys 97;

[0057] The linkage 9 also includes a second transmission belt 98, a guide rail 99 is provided on one side of the separation bin 1, a movable seat 910 is slidably connected to the guide rail 99, a second pulley 911 is installed on one side of the movable seat 910 and the outer sleeve 96, one of the second pulleys 911 is rotatably provided on one side of the movable seat 910 through a bearing, and the other second pulley 911 is fixedly installed on the outer sleeve 96, the second transmission belt 98 is sleeved on the outer circumference of the two second pulleys 911, a fixed plate 912 is fixedly connected between the movable seat 910 and the main sleeve 93, a third motor 913 is fixedly installed on one side of the movable seat 910, and the output end of the third motor 913 is fixedly connected to one of the second pulleys 911;

[0058] Specifically, the bidirectional motor 81 runs, driving one of the reciprocating screws 83 to rotate, and the main sleeve 93 is driven to move in the direction of the bidirectional motor 81 through the threaded connection between the reciprocating screw 83 and the main sleeve 93. The slave sleeve 92 is sleeved on the center rod 33, and the two ends of the connecting plate 95 are respectively sleeved on the main sleeve 93 and the slave sleeve 92. The sliding connection between the connecting plate 95 and the guide groove 94 allows the slave sleeve 92 to move in the direction of the bidirectional motor 81 during the movement. At the same time, the sliding connection between the moving seat 910 and the guide rail 99, and the fixed connection between the moving seat 910 and the main sleeve 93 with the fixed plate 912, allow the moving seat 910 to move synchronously during the movement of the main sleeve 93 in the direction of the bidirectional motor 81. At the same time, it drives the driving rod 71 at one end of the slave sleeve 92 to move to the side of the screening drum 3, and then drives one of the second pulleys 911 to rotate through the third motor 913, and drives the other second pulley 911 to rotate through the connection between the second transmission belt 98 and the two second pulleys 911, thereby driving the outer sleeve 96 to rotate, and then drives the first pulley 97 on the outer sleeve 96 to rotate, and drives the other first pulley 97 to rotate through the connection between the first transmission belt 91 and the two first pulleys 97, thereby driving the slave sleeve 92 to rotate, and then drives the driving rod 71 to rotate with the center rod 33 as the axis, thereby driving the front adjusting member 5 or the rear adjusting member 6 to operate. After the material blocking rod 31 or the material blocking net 32 ​​is adjusted, the bidirectional motor 81 runs again, driving the slave sleeve 92 to move in the opposite direction and reset.

[0059] Example 7

[0060] See Figures 1-12 This embodiment discloses a screening method for recycling waste plastics, the specific steps are:

[0061] The distance between the blocking rods 31 on the screening drum 3 is adjusted according to the size of the plastic to be screened. The control member 8 runs forward, driving the linking member 9 on one side of the screening drum 3 to run, thereby driving the driving member 7 on one side of the screening drum 3 and the front adjusting member 5 to transmit power, thereby adjusting the distance between the two adjacent blocking rods 31. When it is necessary to screen out plastic products that are too small, the control member 8 runs in the reverse direction, driving the linking member 9 on the other side of the screening drum 3 to run, thereby driving the driving member 7 on the other side of the screening drum 3 and the rear adjusting member 6 to transmit power, thereby driving multiple blocking nets 32 to unfold, and making multiple blocking nets 32 connected end to end to form A whole cylindrical retaining net 32 ​​is used to screen plastic products that are too small. After adjusting the screening drum 3, the screening drum 3 is driven to rotate by the driving source 4, and the plastic products are put into the screening drum 3 at the same time. During the rotation of the screening drum 3, a part of the plastic products are blocked by the retaining rod 31 or the retaining net 32 ​​and stay in the screening drum 3, and move to the distribution channel 2 at the upper part of one end of the separation bin 1 through the lower port of the screening drum 3. The other part of the plastic products pass through the gap between the two retaining rods 31 or the mesh of the retaining net 32, and fall down to the distribution channel 2 at the bottom of the separation bin 1, thereby achieving the purpose of plastic screening.

[0062] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A plastic screening and separation device, comprising a separation chamber, characterized in that: Two material distribution channels are fixedly installed on the separation bin, a screening drum and a driving source are installed on the separation bin, a front adjusting member and a rear adjusting member are respectively provided at both ends of the screening drum, a driving member is provided at both ends of the screening drum, the driving member and the front adjusting member and the rear adjusting member are powered by transmission, a control member is provided on one side of the separation bin, a linkage member is provided between the driving member and the control member, and power transmission is provided between the driving member and the linkage member; The screening drum includes a plurality of material blocking rods and a material blocking net, the front adjusting member controls the movement of the plurality of material blocking rods, and the rear adjusting member controls the winding of the plurality of material blocking nets; The driving member includes a driving rod, the control member drives the connecting member on one side to operate, the connecting member drives the driving rod to move toward the screening drum and contacts the front adjusting member or the rear adjusting member, and the connecting member drives the driving rod to rotate, thereby adjusting the distance between the plurality of material blocking rods and adjusting the winding of the material blocking net; The control part runs forward, driving the connecting part on one side of the screening drum to run, thereby driving the driving part on one side of the screening drum and the front adjusting part to transmit power, thereby adjusting the distance between two adjacent material blocking rods. The control part runs reversely, driving the connecting part on the other side of the screening drum to run, thereby driving the driving part on the other side of the screening drum and the rear adjusting part to transmit power, thereby driving multiple material blocking nets to unfold, and making the multiple material blocking nets connected end to end to form an entire cylindrical material blocking net.

2. The plastic screening and separation equipment according to claim 1, characterized in that: The sieve drum also includes a center rod, one side of the separation bin is fixedly connected to a fixing seat, the fixing seat is fixedly installed with a bearing seat, one end of the center rod is rotatably connected to the bearing seat through a bearing, and the other end is rotatably connected to the separation bin through a bearing, the driving source includes a first motor fixedly installed on the separation bin, the output end of the first motor is fixedly connected to one end of the center rod, the sieve drum also includes a front fixing ring and a rear fixing ring, the center rod is sleeved with two rings, a front connecting rod is fixedly connected between the front fixing ring and one of the rings, an inner fixing ring is provided in the inner cavity of the rear fixing ring, a plurality of slots are fixedly connected to the outer circumference of the inner fixing ring with a plurality of blocks that match the slots, and a plurality of rear connecting rods are fixedly connected to the circumference of the other ring, a plurality of slide grooves are provided on the inner side of the inner fixing ring, and one end of the rear connecting rod is slidably provided in the slide groove.

3. The plastic screening and separation equipment according to claim 2, characterized in that: The front adjusting member includes a sliding block and a fixed block, the fixed block is fixedly installed on the front fixed ring, the front fixed ring is provided with a sliding groove, the sliding block is slidably arranged in the sliding groove, and an inner groove is provided on one side of the rear fixed ring, one end of a part of the material blocking rod is fixed to one end of the sliding block, and the other end is slidably arranged in the inner groove, and the other end of the material blocking rod is respectively fixed to the fixed block and the rear fixed ring.

4. The plastic screening and separation equipment according to claim 3, characterized in that: The front adjusting member further comprises a front hinge block, which is arranged at one end of the sliding block and movably hinged to the sliding block. Two first torsion springs with opposite directions are fixedly installed at the hinge between the front hinge block and the sliding block.

5. The plastic screening and separation equipment according to claim 4, characterized in that: The rear adjusting member includes a gear and a baffle, and an active rod and a driven rod are fixedly connected on both sides of the material blocking net. A plurality of arc holes are provided on the inner fixing ring, and a plurality of arc grooves are provided on one side of the front fixing ring. One end of the active rod is slidably arranged in the arc hole, and the other end is rotatably connected to one side of the front fixing ring through a bearing. Both ends of the driven rod are slidably arranged in the arc groove and the arc hole respectively, one end of the material blocking net is wound on the outer surface of the active rod, the gear is fixedly installed on one end of the active rod, and the baffle is fixedly installed on one end of the driven rod.

6. The plastic screening and separation equipment according to claim 5, characterized in that: The rear adjustment member also includes an annular plate, a plurality of tooth plates are fixedly connected to the annular plate, the tooth plates are meshed with gears, a plurality of clamping plates are fixedly connected to the annular plate, the baffle is arranged in the two clamping plates, a plurality of rear hinge blocks are hinged on one side of the annular plate, and two second torsion springs with opposite directions are fixedly installed at the hinge between the rear hinge block and the annular plate.

7. The plastic screening and separation equipment according to claim 6, characterized in that: The control component includes a bidirectional motor, support plates are fixedly connected at both ends of one side of the separation bin, and a reciprocating screw rod is rotatably connected to one side of the support plate through a bearing. The bidirectional motor is fixedly installed on one side of the separation bin, and the output ends of the bidirectional motor are rotatably connected to the two reciprocating screw rods through one-way bearings.

8. The plastic screening and separation equipment according to claim 7, characterized in that: The connecting part includes a first transmission belt, a slave sleeve is sleeved on the center rod, a main sleeve is assembled on the reciprocating screw rod through a thread, guide grooves are opened at both ends of one side of the separation chamber, and connecting plates are sleeved on the outer periphery of the main sleeve and the slave sleeve, and the connecting plates are slidably arranged in the guide grooves. Multiple driving rods are fixedly installed on the outer periphery of the slave sleeve, and an outer sleeve is sleeved on the outer periphery of the main sleeve. The first pulleys are fixedly installed on the outer peripheries of the main sleeve and the outer sleeve, and the first transmission belt is sleeved on the outer peripheries of the two first pulleys.

9. The plastic screening and separation equipment according to claim 8, characterized in that: The linkage also includes a second transmission belt, a guide rail is provided on one side of the separation bin, a moving seat is slidably connected to the guide rail, a second pulley is installed on one side of the moving seat and the outer sleeve, one of the second pulleys is rotatably arranged on one side of the moving seat through a bearing, and the other second pulley is fixedly installed on the outer sleeve, the second transmission belt is sleeved on the outer circumference of the two second pulleys, a fixing plate is fixedly connected between the moving seat and the main sleeve, a third motor is fixedly installed on one side of the moving seat, and an output end of the third motor is fixedly connected to one of the second pulleys.

10. A screening method for recycling waste plastics, characterized in that: The plastic screening and separation device according to any one of claims 1 to 9 is applied, and the specific steps are as follows: The distance between the blocking rods on the screening drum is adjusted according to the size of the plastic to be screened. The control part runs forward, driving the linking part on one side of the screening drum to run, thereby driving the driving part on one side of the screening drum and the front adjusting part to transmit power, thereby adjusting the distance between two adjacent blocking rods. When it is necessary to screen out plastic products that are too small, the control part runs reversely, driving the linking part on the other side of the screening drum to run, thereby driving the driving part on the other side of the screening drum and the rear adjusting part to transmit power, thereby driving multiple blocking nets to unfold, and making multiple blocking nets connected end to end to form a A whole cylindrical retaining net is used to screen out plastic products that are too small. After adjusting the screening cylinder, the driving source is used to drive the screening cylinder to rotate, and the plastic products are put into the screening cylinder at the same time. During the rotation of the screening cylinder, some plastic products are blocked by the retaining rod or the retaining net and stay in the screening cylinder. They move to the distribution channel at the upper part of one end of the separation bin through the lower port of the screening cylinder. The other part of the plastic products passes through the gap between the two retaining rods or the mesh of the retaining net and falls down to the distribution channel at the bottom of the separation bin, thereby achieving the purpose of plastic screening.

Images