A powder removal system

Abstract

The present application relates to the technical field of plastic particle powder removal, and specifically discloses a powder removal system, which includes a powder remover, the powder remover includes a shell, a fluidizing plate and a partition, the shell is provided with a feed port, a discharge port and an air outlet, the feed port is located at the top of one end of the shell, the discharge port is located at the bottom of the other end of the shell, and the air outlet is located at the top of the shell near the discharge port; the end of the fluidizing plate near the feed port is higher, the fluidizing plate divides the inside of the shell into an air inlet cavity and an air outlet cavity, one side of the air inlet cavity is provided with a main air inlet, the fluidizing plate is provided with an exhaust port, and the angle between the flow direction of the air discharged from the exhaust port and the end of the fluidizing plate near the feed port is an acute angle. The present application can reduce dust and wire drawing at the discharge port, which helps to ensure the powder removal effect; the negative pressure in the rotating drum and the dust suction plate can suck in dust and wire drawing in the air at the discharge port, further enhancing the powder removal effect.

Description

Technical Field

[0001] The present application relates to the technical field of plastic particle powder removal, and in particular to a powder removal system. Background Art

[0002] Plastic pellets are generally used for injection molding or blow molding to make plastic products. In the process of plastic pellet production and pneumatic conveying, dust and wire drawing will be generated due to the friction and collision between particles and equipment, and between particles. The generated dust and wire drawing are different from the melting temperature of plastic pellets, and often cause defects in the production process of plastic products, such as color differences, bubbles, etc., affecting the quality of the product. Therefore, in the process of plastic pellet production, dust and wire drawing in plastic pellets need to be removed before packaging and selling.

[0003] In the related art, a Chinese patent with publication number CN108838089A discloses a powder remover and a powder removal system, the technical highlights of which are: comprising an outer shell, the outer shell is arranged to form a powder removal chamber, a feed port is arranged at the top of the first side of the outer shell, an air outlet and a discharge port are arranged on the second side of the outer shell opposite to the first side, the air outlet is located above the discharge port, and an air inlet is arranged at the bottom of the first side of the outer shell; a partition, the partition is installed on the inner wall of the powder removal chamber, the partition divides the powder removal chamber into an upper cavity and a lower cavity, the discharge port is connected with the lower cavity, the air outlet is connected with the upper cavity, and a powder discharge gap is provided between one end of the partition close to the feed port and the inner wall of the powder removal chamber; a fluidizing plate, the fluidizing plate is installed at the bottom of the powder removal chamber and is located above the air inlet, and a through hole is arranged on the fluidizing plate.

[0004] In the above device, air is blown from the through holes on the fluidizing plate toward the top of the fluidizing plate, blowing up the dust and filaments carried by the plastic particles on the fluidizing plate. Since the blowing direction is obliquely upward, the air mixed with dust and filaments is easily discharged from the discharge port together with the plastic particles, affecting the powder removal effect. Summary of the invention

[0005] In order to enhance the powder removal effect on plastic particles, the present application provides a powder removal system.

[0006] A powder removal system provided in this application adopts the following technical solution:

[0007] A powder removal system, comprising:

[0008] A powder remover, the powder remover comprising a shell, a fluidizing plate and a partition, the shell being provided with a feed port, a discharge port and an air outlet, the feed port being located at the top of one end of the shell, the discharge port being located at the bottom of the other end of the shell, and the air outlet being located at the top of one end of the shell near the discharge port;

[0009] The fluidizing plate and the partition are both arranged inside the shell, one end of the fluidizing plate close to the feed port is higher than the other end of the fluidizing plate close to the feed port, the fluidizing plate divides the inside of the shell into an air inlet cavity and an air outlet cavity, one side of the air inlet cavity is provided with a main air inlet, the fluidizing plate is provided with an exhaust port so that the air in the air inlet cavity can be discharged through the exhaust port, and the angle between the flow direction of the air discharged from the exhaust port and the end of the fluidizing plate close to the feed port is an acute angle;

[0010] The partition is located in the air outlet cavity, a dust outlet is provided on the partition, a guide plate is provided on the partition at the dust outlet, and a plurality of guide plates are provided and arranged in parallel at intervals, so that the air in the air inlet cavity flows into the air outlet cavity through the air outlet, and can flow into the upper side of the partition along the dust outlet between the guide plates, and then be discharged from the air outlet;

[0011] A dust collector, the dust collector is used to filter out dust and wires mixed in the air, and the suction end of the dust collector is connected to the air outlet;

[0012] A fan, wherein the air outlet side of the fan is connected to the main air inlet, and the air inlet side of the fan is connected to the discharge end of the dust collector;

[0013] A dust suction mechanism is also provided in the shell, and the dust suction mechanism includes a rotary drum, a dust suction plate, an air pump and a dust collecting box. The rotary drum is rotatably connected to the shell, and the rotary drum is located on a side close to the discharge port. The dust suction plate is fixedly connected to the rotary drum. A plurality of dust suction plates are provided and are arranged in a circular array. A secondary air inlet is provided on the shell on one side of the dust suction plate, and the secondary air inlet is connected to the air outlet side of the fan so that the air flowing in through the secondary air inlet can drive the dust suction plate and the rotary drum to rotate. A cavity connected to the interior of the rotary drum is provided inside the dust suction plate, and a dust suction port is provided on the dust suction plate. The suction end of the air pump is connected to the rotary drum, and the dust collecting box is provided between the rotary drum and the air pump. A filter is provided in the dust collecting box.

[0014] By adopting the above technical scheme, the exhaust direction is set obliquely upward, and the exhaust direction is inclined toward the side close to the feed port, so the air discharged into the upper part of the fluidizing plate is not easy to flow to the end close to the discharge port, so that the dust and wires mixed in the air are not easy to float to the discharge port, which helps to ensure the powder removal effect; since the fluidizing plate is set at an angle, the fallen plastic particles can automatically slide downward under the action of gravity, thereby realizing the automatic discharge of plastic particles, and the air blown obliquely upward can not only separate the dust and wires in the plastic particles, but also exert a force on the sliding plastic particles, thereby slowing down the sliding speed of the plastic particles and prolonging the residence time of the plastic particles on the fluidizing plate. The guide plate can guide the air blown upward obliquely, so that more air can flow into the cavity on the upper side of the partition and then be discharged outward, further reducing the air flowing into the cavity below the partition near the discharge port. The air pump can evacuate air when working, so that the cavities inside the drum and the dust collecting plate are in a negative pressure state, so it is easy to suck in the air in the cavity below the partition near the discharge port, thereby further reducing the dust and wire drawing in this area and enhancing the powder removal effect. The wind blown by the fan can make the dust collecting plate rotate, so that the dust collecting plate can be more fully in contact with the air, thereby enhancing the dust collection effect.

[0015] Optionally, a mounting plate is fixedly connected to the fluidizing plate at the exhaust port, and a plurality of mounting plates are provided and are arranged at intervals along the length direction of the fluidizing plate. The top end of the mounting plate protrudes from the top surface of the fluidizing plate, and a guide hole is provided on the mounting plate that is penetrated and connected to the air inlet cavity. The angle between the axis of the guide hole and the end of the fluidizing plate close to the feed port is an acute angle.

[0016] By adopting the above technical solution, the guide holes can guide the exhausted air so that the air in the air inlet chamber can be discharged obliquely upward; since the top of the mounting plate protrudes from the top surface of the fluidizing plate, the flatness of the surface of the fluidizing plate can be reduced, thereby reducing the sliding speed of the plastic particles sliding down the surface of the fluidizing plate, so that the plastic particles can be more fully in contact with the exhausted air, which helps to enhance the dust removal effect.

[0017] Optionally, a flipping mechanism is provided in the shell, and the flipping mechanism includes a blocking member, a torsion spring and a driving assembly. A plurality of blocking members are arranged at intervals along the length direction of the fluidizing plate. The blocking member is rotatably connected to the fluidizing plate, and the rotation axis of the blocking member is parallel to the width direction of the fluidizing plate. A blocking surface is provided on the blocking member. The torsion spring is connected between the blocking member and the fluidizing plate. The torsion spring enables the blocking surface on the blocking member to remain perpendicular to the fluidizing plate. The driving assembly is used to drive the blocking member to rotate so that the blocking surface of the blocking member is parallel to the fluidizing plate.

[0018] By adopting the above technical solution, the blocking member can block the sliding plastic particles and prolong the residence time of the plastic particles on the fluidizing plate; the blocking member can also rotate downward and then quickly bounce upward to reset, so that the blocking member that bounces upward can throw the plastic particles on the fluidizing plate to the higher side, so that the particles on the fluidizing plate can roll, which on the one hand can prolong the sliding path of the plastic particles, so that the plastic particles can have a longer time to remove powder; on the other hand, the plastic particles in the rolling state are not easy to accumulate, so that the plastic particles are more dispersed, and the plastic particles can be more fully in contact with the air discharged obliquely upward, thereby enhancing the powder removal effect.

[0019] Optionally, the driving assembly is arranged in the air inlet cavity, and the driving assembly includes an abutment plate, a support plate, a push plate, a rack, a gear, a spring and a power component, the abutment plate is fixedly connected to the blocking member, the support plate is slidably arranged on the shell along the length direction of the fluidizing plate, the push plate includes a fixed part and a movable part, the fixed part is fixedly connected to the support plate, the movable part is rotatably connected to the fixed part, and the movable part is used to abut against the abutment plate, so that when the movable part slides to the side close to the feed port, the abutment plate can be pushed to rotate, and when the movable part slides to the side close to the discharge port, the movable part can rotate to avoid;

[0020] The rack is fixedly connected to the support plate, the gear is rotatably connected to the housing, only a portion of the teeth on the gear are provided, the gear is used to mesh with the rack, the spring is connected between the rack and the housing, and the power component is used to drive the gear to rotate, thereby causing the rack to slide and the spring to be stretched.

[0021] By adopting the above technical solution, the gear can continuously rotate unidirectionally. When the teeth on the gear are engaged with the rack, the rack can slide up, and the rack drives the support plate and the push plate to slide up, and the push plate drives the abutment plate to rotate, so that the fan-shaped block rotates downward; when the teeth on the gear are disengaged from the rack, the push plate has been disengaged from the abutment plate, and the abutment plate and the fan-shaped block can be rotated upward to reset, and the spring causes the rack and the support plate to slide down to reset, and the support plate drives the push plate to slide down, and the movable part of the push plate can rotate to avoid until it is reset to the initial state; thereby, the intermittent rotation of the fan-shaped block can be achieved, so that the plastic particles on the fluidizing plate can roll.

[0022] Optionally, the power component includes a rotating rod, a connecting rod and a wind shield, the rotating rod is coaxially fixedly connected to the gear, the connecting rod is vertically fixedly connected to the rotating rod, and the wind shield is fixedly connected to the connecting rod, so that the air flowing in the air intake cavity can drive the wind shield to rotate.

[0023] By adopting the above technical solution, the air flowing in the air intake cavity can cause the wind shield to rotate, and the wind shield drives the rotating rod to rotate through the connecting rod, and the rotating rod drives the gear to rotate. Therefore, the rotation of the gear does not require an additional power source, which is more energy-efficient.

[0024] Optionally, a deflector is provided in the shell, and the deflector includes a cover body, an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are respectively arranged on both sides of the cover body, the connecting rod and the wind shield are both arranged in the cover body, and a baffle is provided in the air outlet pipe, and the baffle is inclined so that the air in the air inlet cavity can flow into the cover body through the air inlet pipe and then flow out through the air outlet pipe.

[0025] By adopting the above technical scheme, when the air in the air inlet cavity flows into the interior of the cover through the air outlet pipe, the air will be blocked by multiple baffles, making it difficult for the air to flow into the interior of the cover through the air outlet pipe; when the air in the air inlet cavity flows into the interior of the cover through the air inlet pipe, since there is no obstruction from the baffle, the air can flow smoothly into the cover, and the air pushes the wind shield to rotate and then is discharged through the air outlet pipe. Therefore, the setting of the guide cover can limit the flow direction of the air, making it easier for the air flowing in the air inlet cavity to push the wind shield to rotate, thereby realizing the driving of the gear.

[0026] Optionally, one end of the air inlet pipe away from the cover body is expanded.

[0027] By adopting the above technical solution, the air flow in the air inlet pipe can be increased, thereby enhancing the driving effect on the wind shield.

[0028] Optionally, the blocking member is a fan-shaped block, the axis of the fan-shaped block is coaxially arranged with the rotation axis of the fan-shaped block, an avoidance hole is opened on the fluidizing plate, and the fan-shaped surface of the fan-shaped block abuts against the hole wall of the avoidance hole.

[0029] By adopting the above technical solution, compared with the plate-like structure, the fan-shaped block is not easily blocked by the plastic particles below during the downward rotation process, so that the blocking surface of the fan-shaped block can be freely switched between the vertical state and the parallel state, and the fan-shaped block can rotate smoothly, which helps to ensure the tumbling effect of the plastic particles; because the fan-shaped surface of the fan-shaped block is always in contact with the hole wall of the avoidance hole, the plastic particles above the fluidizing plate are not easy to fall into the air inlet cavity through the gap between the fan-shaped block and the avoidance hole.

[0030] Optionally, a connecting plate is fixedly installed on the mounting plate close to the fan-shaped block, and the connecting plate is located on the side of the mounting plate close to the fan-shaped block. An exhaust hole is opened on the connecting plate, and the exhaust hole is connected to the guide hole. The exhaust hole is arranged along the length direction of the fluidizing plate.

[0031] By adopting the above technical solution, the air in the air inlet cavity can also be discharged obliquely upward through the guide holes and the exhaust holes. The air flow direction is parallel to the fluidizing plate. Therefore, the discharged air can blow on the fan-shaped surface of the fan-shaped block, making it difficult for debris to accumulate on the fan-shaped surface of the fan-shaped block, which helps to ensure the smooth rotation of the fan-shaped block.

[0032] Optionally, the fan is a negative ion fan.

[0033] By adopting the above technical solution, the wind blown by the fan can not only separate the dust and wire drawing from the plastic particles, but also neutralize the charge in the plastic particles, thereby achieving the effect of removing static electricity and reducing the influence of static electricity on the powder removal effect.

[0034] In summary, this application includes the following beneficial technical effects:

[0035] 1. The inclined fluidizing plate cooperates with the air blown upward obliquely, so that the blown air is not easy to flow into the cavity under the partition near the discharge port, thereby reducing the dust and wire drawing at the discharge port, which helps to ensure the powder removal effect; the negative pressure in the rotating drum and the dust suction plate can suck the dust and wire drawing in the air at the discharge port, thereby further reducing the debris at the discharge port and enhancing the powder removal effect on plastic particles.

[0036] 2. The air flowing into the shell through the secondary air inlet can, on the one hand, block the plastic particles falling along the surface of the fluidizing plate, slow down the falling speed of the plastic particles, so that the plastic particles can be more fully de-powdered; on the other hand, it can also make the drum and the dust collecting plate rotate, thereby increasing the contact area between the dust collecting port on the dust collecting plate and the air, and enhancing the dust collecting effect.

[0037] 3. The fan-shaped blocks rotate intermittently, so that the plastic particles on the fluidizing plate can roll, which not only prolongs the sliding path of the plastic particles and the de-powdering time of the plastic particles, but also makes the plastic particles more dispersed, so that the air blown upward can fully contact the plastic particles, thereby enhancing the de-powdering effect on the plastic particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0039] Figure 2 is a cross-sectional view of an embodiment of the present application for illustrating a dust collection mechanism;

[0040] Figure 3 is a cross-sectional view from another perspective of the embodiment of the present application;

[0041] Figure 4 yes Figure 3 The enlarged schematic diagram of point A in the middle;

[0042] Figure 5 yes Figure 3 The enlarged schematic diagram of point B in the middle;

[0043] Figure 6 is a cross-sectional view of an embodiment of the present application for demonstrating a flipping mechanism;

[0044] Figure 7 It is a structural schematic diagram of the flipping mechanism in the embodiment of the present application;

[0045] Figure 8 This is a structural schematic diagram of an embodiment of the present application for illustrating the installation position of the air deflector;

[0046] Fig. 9 It is a cross-sectional view of an embodiment of the present application for displaying a power component.

[0047] Figure numerals: 1, shell; 11, feed port; 12, discharge port; 13, air outlet; 14, air inlet cavity; 15, air outlet cavity; 16, main air inlet; 17, secondary air inlet; 2, fluidizing plate; 21, exhaust port; 22, avoidance hole; 3, partition; 31, dust outlet; 32, guide plate; 4, dust collector; 5, fan; 6, dust suction mechanism; 61, drum; 62, dust suction plate; 621, dust suction port; 63, air pump; 64, dust box; 641, filter screen; 642, connecting pipe; 7, mounting plate; 71, guide hole; 8, connecting plate; 81, exhaust hole ; 9. Flipping mechanism; 91. Fan-shaped block; 911. Blocking surface; 912. Protrusion; 92. Torsion spring; 93. Driving assembly; 931. Abutment plate; 932. Support plate; 933. Push plate; 9331. Fixed part; 9332. Movable part; 934. Rack; 935. Gear; 936. Spring; 937. Power component; 9371. Rotating rod; 9372. Connecting rod; 9373. Wind shield; 10. Air guide cover; 101. Cover body; 102. Air inlet pipe; 103. Air outlet pipe; 1031. Baffle; 18. Silo; 19. Buffer hopper. DETAILED DESCRIPTION

[0048] The following combination Figure 1-Figure 9 This application is described in further detail.

[0049] The present application embodiment discloses a powder removal system. Figure 1 and Figure 2The powder removal system includes a powder remover, a dust collector 4 and a fan 5. The powder remover is arranged below the silo 18, and a gate valve is arranged at the outlet of the silo 18. The air outlet side of the fan 5 is connected with the powder remover, so after the gate valve is opened, the plastic particles in the silo 18 fall into the powder remover. Due to the different qualities of the plastic particles, dust and wire drawing, the fan 5 can separate the dust and wire drawing from the plastic particles by blowing air into the powder remover; then the air mixed with dust and wire drawing can be discharged into the dust collector 4, and the dust collector 4 separates the dust and wire drawing in the air to purify the air, and then the purified air is introduced into the air inlet side of the fan 5, thereby forming a closed cycle. A buffer hopper 19 is arranged below the powder remover, and the plastic particles after the powder removal treatment can be discharged into the buffer hopper 19, and then the plastic particles enter the packaging machine for packaging.

[0050] Among them, the fan 5 is a negative ion fan, so the wind blown by the fan 5 contains negative ions, which can neutralize the charges on the plastic particles, thereby eliminating the static electricity on the plastic particles and better separating dust and wire drawing from the plastic particles.

[0051] Reference Figure 3 The de-powdering device includes a shell 1, a fluidizing plate 2 and a partition 3. A feed port 11 is arranged at the top of one end of the shell 1, and a discharge port 12 is arranged at the bottom of the shell 1 at the end away from the feed port 11. An air outlet 13 is arranged at the top of the shell 1 on the side where the discharge port 12 is located. The fluidizing plate 2 is fixedly connected to the shell 1, and the fluidizing plate 2 is inclined. The end of the fluidizing plate 2 close to the feed port 11 is higher than the end of the fluidizing plate 2 close to the discharge port 12. Therefore, after the plastic particles to be de-powdered are put into the feed port 11, the plastic particles can fall to the higher end of the fluidizing plate 2, and then the plastic particles can slide down along the inclined fluidizing plate 2 by themselves, and the plastic particles after separation treatment are discharged from the discharge port 12.

[0052] Reference Figure 3 and Figure 4The fluidizing plate 2 divides the cavity inside the shell 1 into two parts. The cavity below the fluidizing plate 2 is the air inlet cavity 14, and the cavity above the fluidizing plate 2 is the air outlet cavity 15. A main air inlet 16 is provided at one end of the air inlet cavity 14, and the main air inlet 16 is connected to the air outlet side of the fan 5, so that the fan 5 can blow air into the air inlet cavity 14. An exhaust port 21 is provided on the fluidizing plate 2, and a plurality of exhaust ports 21 are provided and are evenly spaced along the length direction of the fluidizing plate 2. A mounting plate 7 is fixedly connected to each exhaust port 21; the bottom end of the mounting plate 7 is located in the air inlet cavity 14, and the top end of the mounting plate 7 protrudes from the top surface of the fluidizing plate 2. The mounting plate 7 is arranged along the width direction of the fluidizing plate 2, and a through-set guide hole 71 is provided on the mounting plate 7, and a plurality of guide holes 71 are provided and arranged in an array. The guide hole 71 is arranged at an angle, and the angle between the axis of the guide hole 71 and the higher end of the fluidizing plate 2 is an acute angle, so that the air in the air inlet cavity 14 can flow obliquely upward into the air outlet cavity 15 through the guide hole 71, which can slow down the falling speed of the plastic particles on the one hand, and blow out the dust and wire drawing in the plastic particles on the other hand, thereby realizing the powder removal treatment of the plastic particles.

[0053] The partition 3 is fixedly connected to the air outlet cavity 15 of the shell 1, and the partition 3 is arranged above the fluidizing plate 2. A dust outlet 31 is provided on the partition 3, and a guide plate 32 is fixedly connected to the dust outlet 31 on the partition 3. The guide plate 32 is arranged at an angle, and a plurality of guide plates 32 are arranged and evenly spaced along the length direction of the fluidizing plate 2. Therefore, the air mixed with dust and wire drawing can flow into the top of the partition 3 along the guide plate 32 and the dust outlet 31, and then be discharged into the dust collector 4 through the air outlet 13. The setting of the guide plate 32 can guide the flowing air, so that the air in the shell 1 can flow more obliquely upward along the guide plate 32, thereby reducing the air flowing to the area below the partition 3 close to the discharge port 12.

[0054] Reference Figure 2 , Figure 3 and Figure 5, a dust collecting mechanism 6 is also provided in the shell 1, and the dust collecting mechanism 6 includes a rotating drum 61, a dust collecting plate 62, an air pump 63 and a dust collecting box 64. The rotating drum 61 is located at one end close to the discharge port 12, and the rotating drum 61 is a hollow cylinder. The rotating drum 61 is arranged along the width direction of the fluidizing plate 2; the two ends of the rotating drum 61 are rotatably connected to the side walls on both sides of the shell 1. The dust collecting plate 62 is fixedly connected to the outer wall of the rotating drum 61, and the dust collecting plate 62 is arranged along the length direction of the rotating drum 61. There are multiple dust collecting plates 62 arranged in a circular array; a cavity connected to the interior of the rotating drum 61 is provided on the dust collecting plate 62. A dust collecting port 621 connected to the internal cavity is provided on the dust collecting plate 62, and there are multiple dust collecting ports 621 arranged in an array. The dust box 64 is arranged on the outside of the box body, and a connecting pipe 642 connected to the inside of the dust box 64 is arranged on the dust box 64. The connecting pipe 642 is rotatably connected to the drum 61, so that when the drum 61 rotates, the dust box 64 will not be driven to rotate, and the dust box 64 can remain stationary. The end of the dust box 64 away from the drum 61 is connected to the suction end of the air pump 63, so that when the air pump 63 sucks air, a negative pressure can be generated in the cavity inside the dust collecting plate 62, so that the dust and wire drawing under the partition 3 near one end of the discharge port 12 are sucked into the dust collecting plate 62, and then the dust and wire drawing in the dust collecting plate 62 can flow into the dust box 64 through the drum 61.

[0055] Reference Figure 2 , a filter screen 641 is provided in the dust box 64, so that the dust and wires sucked into the dust box 64 can be blocked to prevent the dust and wires from being sucked into the air pump 63 and causing damage to the air pump 63. Activated carbon can be provided in the dust box 64 to enhance the adsorption effect of dust and wires, so as to better collect them. The filter screen 641 can be detachably connected to the dust box 64, so that the filter screen 641 can be regularly pulled out for cleaning to prevent the filter screen 641 from being blocked.

[0056] Reference Figure 3 A secondary air inlet 17 is provided on one side of the dust collecting plate 62 on the shell 1, and the secondary air inlet 17 is communicated with the air outlet side of the fan 5, so that the fan 5 can also blow air into the shell 1 through the secondary air inlet 17, so that the dust collecting plate 62 rotates, and the dust collecting plate 62 drives the rotating drum 61 to rotate, so that multiple dust collecting plates 62 rotate at the same time, thereby increasing the dust collection area of ​​the dust collection port 621 on the dust collecting plate 62, which helps to enhance the dust collection effect.

[0057] Reference Figure 6, a flip mechanism 9 is also provided in the shell 1, and the flip mechanism 9 includes a blocking member, a torsion spring 92 and a driving assembly 93. A plurality of blocking members are provided and are evenly spaced along the length direction of the fluidizing plate 2. In this embodiment, the blocking member is a fan-shaped block 91; in other embodiments, the blocking member may also be a plate-like structure. The length direction of the fan-shaped block 91 is parallel to the width direction of the fluidizing plate 2. The fan-shaped block 91 is hinged to the fluidizing plate 2, and the hinge axis of the fan-shaped block 91 is coaxially arranged with its own axis. An avoidance hole 22 is provided on the fluidizing plate 2, so that during the rotation of the fan-shaped block 91, the fan-shaped surface of the fan-shaped block 91 can be against the inner wall of the avoidance hole 22, so that the plastic particles above the fluidizing plate 2 are not easy to enter the air inlet cavity 14 below the fluidizing plate 2 through the avoidance hole 22. The number of torsion springs 92 is adapted to the number of fan-shaped blocks 91, and each torsion spring 92 corresponds to a fan-shaped block 91. The torsion spring 92 is fixedly connected between the sector block 91 and the fluidizing plate 2 .

[0058] Reference Figure 6 and Figure 7 One side wall of the sector block 91 is a blocking surface 911, which is used to abut against the plastic particles sliding obliquely downward along the fluidizing plate 2. The sector block 91 is fixedly connected with a protrusion 912 used to abut against the bottom wall of the fluidizing plate 2, and the protrusion 912 is always located below the fluidizing plate 2; when the top wall of the protrusion 912 abuts against the bottom wall of the fluidizing plate 2, the sector block 91 is located above the fluidizing plate 2, and the blocking surface 911 of the sector block 91 is perpendicular to the surface of the fluidizing plate 2.

[0059] The protrusion 912 can limit the rotation of the sector block 91 to prevent the sector block 91 from excessive rotation. Under normal conditions, the torsion spring 92 is in a twisted state, and the torsion spring 92 makes the protrusion 912 on the sector block 91 press against the bottom wall of the fluidizing plate 2, so that the blocking surface 911 of the sector block 91 remains perpendicular to the fluidizing plate 2.

[0060] The driving assembly 93 is used to drive the sector block 91 to rotate downward, and rotate the blocking surface 911 of the sector block 91 to a state parallel to the fluidizing plate 2. The driving assembly 93 includes an abutment plate 931, a support plate 932, a push plate 933, a rack 934, a gear 935, a spring 936 and a power component 937. The number of abutment plates 931 is the same as the number of sector blocks 91, and each abutment plate 931 corresponds to a sector block 91. The abutment plate 931 is fixedly connected to the sector block 91, and the plate surface of the abutment plate 931 is parallel to the blocking surface 911; when the abutment plate 931 is in contact with the bottom wall of the fluidizing plate 2, the sector block 91 is located below the fluidizing plate 2, and the blocking surface 911 is parallel to the surface of the fluidizing plate 2.

[0061] The support plate 932 is arranged along the length direction of the fluidizing plate 2, and the support plate 932 is slidably arranged on the housing 1 along its own length direction. The number of push plates 933 is the same as the number of abutment plates 931, and each push plate 933 corresponds to an abutment plate 931. The push plate 933 includes a fixed portion 9331 and a movable portion 9332. The fixed portion 9331 is fixedly connected to the top wall of the support plate 932, the movable portion 9332 is arranged at the top end of the fixed portion 9331, and the bottom end of the movable portion 9332 is hinged to the top end of the fixed portion 9331. Therefore, when the support plate 932 slides toward the side close to the feed port 11, it can drive the fixed portion 9331 and the movable portion 9332 to slide. When the movable portion 9332 contacts the abutment plate 931, as the movable portion 9332 slides, the abutment plate 931 can be rotated, and the abutment plate 931 drives the fan-shaped block 91 to rotate downward. Until the abutment plate 931 rotates to a state of being in contact with the bottom wall of the fluidization plate 2, the movable portion 9332 is out of contact with the abutment plate 931, and the restriction of the movable portion 9332 on the abutment plate 931 is lost. The torsion spring 92 can make the abutment plate 931 and the fan-shaped block 91 rotate upward and reset quickly. During the upward rotation and reset of the fan-shaped block 91, the plastic particles above the fluidization plate 2 can be moved to the side close to the feed port 11, so that the plastic particles can roll back, thereby extending the residence time of the plastic particles on the fluidization plate 2, so that the flowing air can contact the plastic particles more fully, and enhance the powder removal effect.

[0062] When the support plate 932 slides toward the side close to the discharge port 12, the support plate 932 can drive the fixed part 9331 and the movable part 9332 to slide. When the movable part 9332 contacts the abutment plate 931, since the fan-shaped block 91 can no longer continue to rotate upward, as the movable part 9332 slides, the movable part 9332 can rotate to avoid, thereby realizing the reset of the support plate 932.

[0063] The rack 934 and the support plate 932 are located on the same straight line, and one end of the rack 934 is fixedly connected to the end of the support plate 932. The gear 935 is rotatably connected to the housing 1, and the rotation axis of the gear 935 is arranged along the width direction of the fluidizing plate 2. The gear 935 is located below the rack 934, and only a part of the teeth are arranged on the gear 935, and the gear 935 is used to mesh with the rack 934. The spring 936 is fixedly connected between the rack 934 and the housing 1. Under normal conditions, the spring 936 is at its original length, and the push plate 933 is located on the side of the corresponding abutment plate 931 close to the discharge port 12.

[0064] The power component 937 is used to drive the gear 935 to rotate continuously in one direction. Therefore, when the teeth on the gear 935 mesh with the rack 934, the rotation of the gear 935 can make the rack 934 slide, so that the support plate 932 and the push plate 933 slide to the side close to the feed port 11; after the push plate 933 passes over the corresponding abutment plate 931, the teeth on the gear 935 disengage from the meshing with the rack 934, and the spring 936 makes the rack 934 and the support plate 932 slide to the side close to the discharge port 12 to achieve reset. The gear 935 continues to rotate, and when the teeth on the gear 935 mesh with the rack 934 again, the rack 934 and the support plate 932 can slide to the side close to the feed port 11 again, and then reciprocate in this way, thereby realizing the reciprocating sliding of the support plate 932, so that the fan-shaped block 91 can rotate intermittently to flip the plastic particles above the fluidizing plate 2, thereby enhancing the powder removal effect.

[0065] Reference Figure 8 and Fig. 9 The power component 937 includes a rotating rod 9371, a connecting rod 9372 and a windshield 9373. The rotating rod 9371 and the gear 935 are coaxially fixedly connected; the connecting rod 9372 is fixedly connected to the rotating rod 9371 along the radial direction of the rotating rod 9371, and a plurality of connecting rods 9372 are provided and arranged in a circular array. The number of windshields 9373 is the same as the number of connecting rods 9372, and each windshield 9373 corresponds to a connecting rod 9372, and the windshield 9373 is fixedly connected to the end of the connecting rod 9372. The windshield 9373 is arranged in an arc shape, so that the air flowing in the air inlet cavity 14 can make the windshield 9373 rotate. When the windshield 9373 rotates, the rotating rod 9371 can be driven to rotate through the connecting rod 9372, so that the gear 935 rotates continuously, so that the rotation of the gear 935 does not require an additional power source, which is more energy-saving.

[0066] Furthermore, a deflector 10 is also provided in the shell 1, and the deflector 10 includes a cover body 101, an air inlet pipe 102 and an air outlet pipe 103. The air inlet pipe 102 and the air outlet pipe 103 are both fixedly connected to the cover body 101, and are both connected to the inside of the cover body 101. The air inlet pipe 102 and the air outlet pipe 103 are arranged in parallel at intervals and are respectively located on both sides of the cover body 101. The connecting rod 9372 and the wind shield 9373 are both arranged in the cover body 101; one end of the rotating rod 9371 is located in the cover body 101, and the other end of the rotating rod 9371 passes through the cover body 101, and the end of the rotating rod 9371 passing through the cover body 101 is coaxially fixedly connected with the gear 935. Since one end of the air inlet pipe 102 faces the wind shield 9373, the air entering the cover body 101 through the air inlet pipe 102 is more likely to push the wind shield 9373 to rotate.

[0067] Reference Fig. 9, a baffle 1031 is fixedly connected to the inner wall of the air outlet pipe 103, and two groups of baffles 1031 are provided, and are respectively fixedly connected to the two opposite side walls inside the air outlet pipe 103. Each group of baffles 1031 includes a plurality of baffles evenly spaced and arranged along the length direction of the air outlet pipe 103. The baffles 1031 are arranged in an inclined manner, so when the air flows into the inside of the cover body 101 through the air outlet pipe 103, it will be blocked by the plurality of baffles 1031, making it difficult for the air to flow into the cover body 101 through the air outlet pipe 103; while the baffle 1031 is not provided in the air inlet pipe 102, so the air in the air inlet cavity 14 can smoothly flow into the cover body 101 through the air inlet pipe 102, and then push the wind shield 9373 to rotate, and then flow out through the air outlet pipe 103, thereby ensuring the flow direction of the air, so that the rotation process of the wind shield 9373 can be carried out more smoothly.

[0068] Furthermore, one end of the air inlet pipe 102 away from the cover body 101 is expanded, thereby increasing the amount of air entering the air inlet pipe 102 and further ensuring the smooth rotation of the wind shield 9373 .

[0069] In other embodiments, an exhaust duct may also be provided so that one end of the exhaust duct is connected to the air outlet side of the fan 5 and the other end of the exhaust duct faces the wind shield 9373, thereby enabling non-electrical driving of the wind shield 9373.

[0070] Reference Figure 4 In order to facilitate cleaning of the fan-shaped surface of the fan-shaped block 91, a connecting plate 8 is fixedly connected to the mounting plate 7 on the side of the fan-shaped surface close to the fan-shaped block 91. The connecting plate 8 is arranged along the length direction of the mounting plate 7, and the connecting plate 8 is located on the side of the mounting plate 7 close to the fan-shaped block 91. The plate surface of the connecting plate 8 is parallel to the fluidizing plate 2, and an exhaust hole 81 is provided in the connecting plate 8, and the exhaust hole 81 is connected with the guide hole 71; therefore, the air in the air inlet cavity 14 can also be discharged outward through the guide hole 71 and the exhaust hole 81, so as to blow air to the fan-shaped surface of the fan-shaped block 91, so that dust and wire drawing are not easy to adhere to the fan-shaped surface of the fan-shaped block 91, thereby reducing the possibility of blockage in the gap between the fan-shaped block 91 and the avoidance hole 22, which helps to ensure the smooth rotation of the fan-shaped block 91.

[0071] The diameters of the guide holes 71 and the exhaust holes 81 are smaller than the size of the plastic particles, so it is difficult for the plastic particles to enter the guide holes 71 and the exhaust holes 81 .

[0072] The implementation principle of a powder removal system in an embodiment of the present application is as follows: after the plastic particles to be de-powdered are put into the housing 1 through the feed port 11, the plastic particles fall onto the top surface of the fluidizing plate 2; then the plastic particles slide obliquely downward along the fluidizing plate 2, and then are discharged from the discharge port 12. During the sliding of the plastic particles, the fan 5 can blow air into the air inlet cavity 14 through the main air inlet 16, and the air in the air inlet cavity 14 can be discharged obliquely upward through the guide holes 71 on the mounting plate 7, and then blow the plastic particles on the fluidizing plate 2 to blow away the dust and wires mixed in the plastic particles. Then the air mixed with dust and wires flows along the guide plate 32 to the cavity above the partition 3, and then is discharged to the dust collector 4 through the air outlet 13. The dust collector 4 filters and purifies the air and then discharges the pure air into the fan 5, thereby realizing a closed cycle.

[0073] At the same time, the wind blown by the fan 5 can also flow into the shell 1 through the secondary air inlet 17. Under the action of wind force, the dust collecting plate 62 can rotate, and the dust collecting plate 62 drives the rotating drum 61 to rotate, so that all the dust collecting plates 62 are in a rotating state, so that the dust collecting ports 621 on the dust collecting plates 62 can be more fully in contact with the air in the shell 1. The air pump 63 is in a working state, and the air pump 63 is pumping air, so that the cavities inside the rotating drum 61 and the dust collecting plates 62 are in a negative pressure state, so that it is convenient to remove dust in the cavity below the partition 3 on the side of the shell 1 close to the discharge port 12, thereby further eliminating dust and wire drawing at the discharge port 12, and enhancing the powder removal effect.

[0074] In the process of removing powder from the plastic particles on the fluidizing plate 2 by wind convection, the air in the air inlet cavity 14 can also flow into the cover body 101 through the air inlet pipe 102, so that the wind shield 9373 rotates, and the wind shield 9373 drives the rotating rod 9371 to rotate through the connecting rod 9372, and the rotating rod 9371 drives the gear 935 to rotate. When the teeth on the gear 935 mesh with the rack 934, the gear 935 rotates to make the rack 934 slide obliquely upward, the rack 934 drives the support plate 932 to slide, and the support plate 932 drives the push plate 933 to slide; when the push plate 933 contacts the abutment plate 931, as the push plate 933 slides, the abutment plate 931 can rotate, and the abutment plate 931 drives the fan-shaped block 91 to rotate downward, so that the fan-shaped block 91 rotates to the bottom of the fluidizing plate 2. When the abutment plate 931 rotates to a state parallel to the fluidization plate 2, the push plate 933 breaks away from the contact with the abutment plate 931. At this time, the torsion spring 92 can make the abutment plate 931 and the fan-shaped block 91 rotate upward for reset, so that the abutment plate 931 returns to a state perpendicular to the fluidization plate 2.

[0075] At this time, the teeth on the gear 935 are disengaged from the meshing with the rack 934, and the spring 936 makes the rack 934 and the support plate 932 slide downward to reset. When the support plate 932 slides down, it drives the push plate 933 to slide down. When the movable part 9332 on the push plate 933 contacts the abutment plate 931, it can rotate to avoid, so as to achieve smooth sliding of the push plate 933, until the support plate 932 and the push plate 933 are reset to the initial state. Then, in this reciprocating manner, the fan-shaped block 91 intermittently rotates downward and then quickly bounces upward. The fan-shaped block 91 that bounces upward can make the plastic particles on the blocking surface 911 bounce up, and the bounced plastic particles can fall back, so that the plastic particles on the fluidizing plate 2 keep rolling, which prolongs the falling time of the plastic particles and enables the plastic particles to fully contact with the air blown obliquely upward, thereby enhancing the powder removal effect on the plastic particles.

[0076] The above are optional embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A powder removal system, characterized in that: include: A de-duster, the de-duster comprising a shell (1), a fluidizing plate (2) and a partition (3), the shell (1) being provided with a feed port (11), a discharge port (12) and an air outlet (13), the feed port (11) being located at the top of one end of the shell (1), the discharge port (12) being located at the bottom of the other end of the shell (1), and the air outlet (13) being located at the top of the shell (1) at one end close to the discharge port (12); The fluidizing plate (2) and the partition plate (3) are both arranged inside the shell (1); one end of the fluidizing plate (2) close to the feed port (11) is higher than one end of the fluidizing plate (2) close to the feed port (12); the fluidizing plate (2) divides the inside of the shell (1) into an air inlet chamber (14) and an air outlet chamber (15); a main air inlet (16) is arranged on one side of the air inlet chamber (14); an air outlet (21) is arranged on the fluidizing plate (2) so that air in the air inlet chamber (14) can be discharged through the air outlet (21); and the angle between the flow direction of the air discharged from the air outlet (21) and the end of the fluidizing plate (2) close to the feed port (11) is an acute angle; The partition (3) is located in the air outlet cavity (15), a dust outlet (31) is provided on the partition (3), a guide plate (32) is provided on the partition (3) at the dust outlet (31), a plurality of guide plates (32) are provided and arranged in parallel at intervals, so that after the air in the air inlet cavity (14) flows into the air outlet cavity (15) through the air outlet (21), the air can flow into the upper side of the partition (3) along the dust outlet (31) between the guide plates (32) and then be discharged from the air outlet (13); A dust collector (4), the dust collector (4) being used to filter out dust and wires contained in the air, the suction end of the dust collector (4) being in communication with the air outlet (13); A fan (5), wherein the air outlet side of the fan (5) is connected to the main air inlet (16), and the air inlet side of the fan (5) is connected to the discharge end of the dust collector (4); The shell (1) is further provided with a dust suction mechanism (6), the dust suction mechanism (6) comprising a rotating drum (61), a dust suction plate (62), an air pump (63) and a dust collection box (64), the rotating drum (61) being rotatably connected to the shell (1), the rotating drum (61) being located on a side close to the discharge port (12), the dust suction plate (62) being fixedly connected to the rotating drum (61), a plurality of dust suction plates (62) being provided and arranged in a circular array, a secondary air inlet (17) being provided on one side of the dust suction plate (62) on the shell (1), the The secondary air inlet (17) is in communication with the air outlet side of the fan (5), so that the air flowing in through the secondary air inlet (17) can drive the dust collecting plate (62) and the rotating drum (61) to rotate; a cavity communicating with the interior of the rotating drum (61) is provided inside the dust collecting plate (62); a dust collecting port (621) is provided on the dust collecting plate (62); a suction end of the air pump (63) is in communication with the rotating drum (61); the dust collecting box (64) is arranged between the rotating drum (61) and the air pump (63); and a filter screen (641) is provided in the dust collecting box (64).

2. A powder removal system according to claim 1, characterized in that: A mounting plate (7) is fixedly connected to the fluidizing plate (2) at the air outlet (21); a plurality of mounting plates (7) are provided and are arranged at intervals along the length direction of the fluidizing plate (2); the top end of the mounting plate (7) protrudes from the top surface of the fluidizing plate (2); a guide hole (71) is provided through the mounting plate (7); the guide hole (71) is connected to the air inlet cavity (14); and the angle between the axis of the guide hole (71) and one end of the fluidizing plate (2) close to the feed inlet (11) is an acute angle.

3. A powder removal system according to claim 2, characterized in that: A turnover mechanism (9) is arranged in the shell (1), and the turnover mechanism (9) comprises a blocking member, a torsion spring (92) and a driving assembly (93); a plurality of blocking members are arranged at intervals along the length direction of the fluidizing plate (2); the blocking member is rotatably connected to the fluidizing plate (2); the rotation axis of the blocking member is parallel to the width direction of the fluidizing plate (2); a blocking surface (911) is arranged on the blocking member; the torsion spring (92) is connected between the blocking member and the fluidizing plate (2); the torsion spring (92) enables the blocking surface (911) on the blocking member to remain in a state perpendicular to the fluidizing plate (2); and the driving assembly (93) is used to drive the blocking member to rotate so that the blocking surface (911) of the blocking member is parallel to the fluidizing plate (2).

4. A powder removal system according to claim 3, characterized in that: The driving assembly (93) is arranged in the air inlet chamber (14), and comprises an abutment plate (931), a support plate (932), a push plate (933), a rack (934), a gear (935), a spring (936), and a power component (937). The abutment plate (931) is fixedly connected to the blocking member, the support plate (932) is slidably arranged on the housing (1) along the length direction of the fluidizing plate (2), and the push plate (933) comprises a fixed portion (9331) and a movable portion (9333). The fixed portion (9331) is fixedly connected to the support plate (932), the movable portion (9332) is rotatably connected to the fixed portion (9331), and the movable portion (9332) is used to abut against the abutment plate (931), so that when the movable portion (9332) slides toward a side close to the feed port (11), the abutment plate (931) can be pushed to rotate, and when the movable portion (9332) slides toward a side close to the discharge port (12), the movable portion (9332) can rotate to avoid the abutment plate (931); The rack (934) is fixedly connected to the support plate (932), the gear (935) is rotatably connected to the housing (1), the teeth on the gear (935) are only partially provided, the gear (935) is used to mesh with the rack (934), the spring (936) is connected between the rack (934) and the housing (1), and the power component (937) is used to drive the gear (935) to rotate, thereby causing the rack (934) to slide and the spring (936) to be stretched.

5. A powder removal system according to claim 4, characterized in that: The power component (937) comprises a rotating rod (9371), a connecting rod (9372) and a wind shield (9373); the rotating rod (9371) is coaxially fixedly connected to the gear (935); the connecting rod (9372) is vertically fixedly connected to the rotating rod (9371); and the wind shield (9373) is fixedly connected to the connecting rod (9372), so that the air flowing in the air inlet cavity (14) can drive the wind shield (9373) to rotate.

6. A powder removal system according to claim 5, characterized in that: The shell (1) is provided with a deflector (10), the deflector (10) comprising a cover body (101), an air inlet pipe (102) and an air outlet pipe (103), the air inlet pipe (102) and the air outlet pipe (103) being respectively arranged on both sides of the cover body (101), the connecting rod (9372) and the wind shield (9373) being both arranged in the cover body (101), and a baffle (1031) being arranged in the air outlet pipe (103), the baffle (1031) being arranged in an inclined manner so that the air in the air inlet cavity (14) can flow into the cover body (101) through the air inlet pipe (102) and then flow out through the air outlet pipe (103).

7. A powder removal system according to claim 6, characterized in that: One end of the air inlet pipe (102) away from the cover body (101) is flared.

8. A powder removal system according to claim 3, characterized in that: The blocking member is a fan-shaped block (91), the axis of the fan-shaped block (91) is coaxially arranged with its own rotation axis, the fluidizing plate (2) is provided with an avoidance hole (22), and the fan-shaped surface of the fan-shaped block (91) abuts against the hole wall of the avoidance hole (22).

9. A powder removal system according to claim 8, characterized in that: A connecting plate (8) is fixedly arranged on the mounting plate (7) close to the sector block (91); the connecting plate (8) is located on a side of the mounting plate (7) close to the sector block (91); an exhaust hole (81) is provided on the connecting plate (8); the exhaust hole (81) is connected to the guide hole (71); and the exhaust hole (81) is arranged along the length direction of the fluidizing plate (2).

10. A powder removal system according to claim 1, characterized in that: The fan (5) is a negative ion fan.

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