Centrifugal dewatering equipment for waste plastic recovery

Abstract

The utility model relates to the technical field of waste plastic recovery, in particular to centrifugal dewatering equipment for waste plastic recovery, which comprises an equipment shell, a dewatering cylinder and a sealing door structure. The dewatering cylinder comprises a net cylinder, the net cylinder is rotationally installed in the shell, six air inlet pipes are annularly and fixedly installed on the upper edge of the side surface of the net cylinder at equal angles, the other ends of the six air inlet pipes communicate with the inner side surface of an air groove, the air groove is of an annular structure, and the upper edge and the lower edge of an opening in the outer side of the air groove are rotationally connected with the inner side surface of the base ring through sealing bearings; the door sealing structure is movably installed on the bottom side of the shell. According to the utility model, the air ducts are utilized to distribute externally-connected air into the air inlet pipes, and the air inlet pipes and the cylinder wall of the mesh cylinder are mutually connected in an inclined tangent manner, so that the air flow is in a vortex state when entering the mesh cylinder, water is accelerated to be discharged from meshes of the mesh cylinder, and meanwhile, plastic scraps can be continuously blown to move in the mesh cylinder and assisted to be turned over; the dehydration efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of waste plastic recycling technology, specifically a centrifugal dehydration device for waste plastic recycling. Background Technology

[0002] In the field of plastic recycling, dehydration dryers are used to remove moisture from the surface and inside of plastics to ensure dryness. Existing dehydration drying equipment mainly uses centrifugal dehydrators to achieve the purpose of drying without using heating methods. By rotating the wet plastic fragments, the water is separated from the plastic under the action of centrifugal force.

[0003] Some current centrifugal dehydration equipment relies entirely on the centrifugal force provided by the high-speed rotation of the inner cylinder to throw out water. However, during high-speed rotation, plastic debris will also stick tightly to the cylinder wall due to centrifugal force, and may even be in a relatively static state while rotating synchronously with the inner cylinder. When the debris is piled up too tightly, the water is sealed in the debris pile, making it difficult to separate quickly, and there is also the possibility of clogging the inner cylinder mesh, affecting the water throwing effect. Utility Model Content

[0004] The purpose of this invention is to provide a centrifugal dewatering device for recycling waste plastics, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A centrifugal dewatering device for recycling waste plastics includes:

[0007] Equipment housing, the equipment housing including a casing;

[0008] A dehydration cylinder, comprising a mesh cylinder, which is rotatably installed inside a housing. Six air inlet pipes are fixedly installed on the upper edge of the side surface of the mesh cylinder in a ring at equal angles. The other ends of the six air inlet pipes are connected to the inner surface of the air trough. The air trough has a ring structure. The upper and lower edges of the outer opening of the air trough are rotatably connected to the inner surface of the base ring through a sealed bearing.

[0009] A sealing door structure is movably installed on the bottom side of the housing.

[0010] Furthermore, the device housing also includes:

[0011] The duct movable groove is fixedly installed at the opening on the housing, and the inner wall of the duct movable groove is fixedly connected to the base ring;

[0012] A sealing edge is fixedly installed on the upper edge of the inner wall of the movable groove of the air duct.

[0013] A cover is attached to the opening of the duct's movable slot;

[0014] The discharge port is located at the bottom side opening of the housing;

[0015] The water outlet is fixedly installed on one side edge of the bottom of the housing.

[0016] Furthermore, the device housing also includes:

[0017] Motor No. 1, which is fixedly installed on one side surface of the housing;

[0018] Gear No. 1 is fixedly installed at the output end of motor No. 1.

[0019] Furthermore, the dehydration cylinder also includes:

[0020] The bearing has its inner ring fixedly connected to the bottom opening of the mesh cylinder, and its outer ring fixedly connected to the upper opening of the discharge port.

[0021] An external interface is fixedly installed on one side of the base ring and passes through the movable groove of the air duct;

[0022] The No. 1 external gear ring is fixedly sleeved in the middle of the mesh cylinder and meshes with the No. 1 gear.

[0023] Furthermore, the sealing structure includes:

[0024] The support frame consists of two supports, which are fixedly installed on one side of the housing.

[0025] An electric actuator, wherein the side surface of the electric actuator is rotatably connected to a support frame via a bearing;

[0026] The second external toothed ring is fixedly sleeved on the middle part of the side surface of the electric push rod;

[0027] Gear No. 2, one side of which meshes with external gear ring No. 2;

[0028] The second motor is fixedly installed on one side of the housing, and its output end is fixedly connected to the second gear.

[0029] Furthermore, the sealing structure also includes:

[0030] A connecting rod, one end of which is fixedly connected to the output end of the electric actuator;

[0031] A door sealing body, the side surface of which is fixedly connected to the other end of a connecting rod;

[0032] Motor No. 3 is fixedly installed on the bottom side of the sealing gate body;

[0033] A stirring rod, the lower end of which is fixedly connected to the output end of motor No. 3.

[0034] Compared with the prior art, the beneficial effects of this utility model are:

[0035] 1. Pour the soaked and washed waste plastic scraps into the screen cylinder. Then, drive the screen cylinder to rotate inside the shell to shake out the water inside the plastic scraps. While dehydrating, use air channels to divert the externally supplied air into each air inlet pipe. The air inlet pipes are connected to the screen cylinder wall at an inclined tangent, so that the airflow enters the screen cylinder in a vortex state, which allows the water on the surface of the plastic scraps to be quickly removed and accelerates the water discharge from the screen cylinder mesh. At the same time, the air can continuously blow and move the plastic scraps inside the screen cylinder, helping to turn the scraps and improve the dehydration efficiency.

[0036] 2. The main body of the sealing gate blocks the discharge port, and the stirring rod is inserted into the bottom of the screen cylinder. The stirring rod is rotated in the opposite direction relative to the screen cylinder by the No. 3 motor to stir and turn the plastic waste accumulated inside the screen cylinder, thereby improving the dewatering effect. After dewatering is completed, the electric push rod is started first to pull the sealing gate main body and the stirring rod away from the bottom of the shell and open the discharge port. Then the No. 2 motor is started, and the No. 2 gear and the No. 2 external gear ring are driven to deflect the sealing gate main body and fully open the discharge port to discharge the plastic. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0038] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0039] Figure 3 This is a schematic diagram of the device casing in this utility model;

[0040] Figure 4 This is a schematic diagram of the dehydration cylinder in this utility model;

[0041] Figure 5 This is a schematic diagram of the sealing door structure in this utility model.

[0042] In the diagram: 1. Equipment casing; 101. Shell; 102. Air duct movable slot; 103. Sealing edge; 104. Cover; 105. Discharge port; 106. Water outlet; 107. Motor No. 1; 108. Gear No. 1; 2. Dewatering cylinder; 201. Mesh cylinder; 202. Bearing; 203. Air inlet pipe; 204. Air duct; 205. Base ring; 206. External interface; 207. External gear ring No. 1; 3. Sealing gate structure; 301. Support frame; 302. Electric push rod; 303. External gear ring No. 2; 304. Gear No. 2; 305. Motor No. 2; 306. Connecting rod; 307. Sealing gate body; 308. Motor No. 3; 309. Stirring rod. Detailed Implementation

[0043] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0044] Please see Figure 1-5 In this embodiment of the present invention, a centrifugal dewatering device for recycling waste plastics includes a housing 1, a dewatering cylinder 2, and a sealing structure 3. The housing 1 includes a shell 101; the dewatering cylinder 2 includes a mesh cylinder 201, which is rotatably installed inside the shell 101. Six air inlet pipes 203 are fixedly installed in a ring at equal angles on the upper edge of the side surface of the mesh cylinder 201. The other ends of the six air inlet pipes 203 are connected to the inner surface of the air trough 204. The air trough 204 has a ring structure, and the upper and lower edges of the outer opening of the air trough 204 are rotatably connected to the inner surface of the base ring 205 through a sealed bearing; the sealing structure 3 is movably installed on the bottom side of the shell 101.

[0045] Specifically, the soaked and washed waste plastic scraps are poured into the mesh cylinder 201, and then the mesh cylinder 201 is driven to rotate inside the shell 101 to shake out the water inside the plastic scraps. While dehydrating, the air duct 204 is used to divert the externally introduced air into each air inlet pipe 203. The air inlet pipe 203 is connected to the wall of the mesh cylinder 201 at an inclined tangent, so that the airflow enters the mesh cylinder 201 in a vortex state, which allows the water on the surface of the plastic scraps to be quickly removed and accelerates the water discharge from the mesh of the mesh cylinder 201. At the same time, the plastic scraps are continuously blown and moved inside the mesh cylinder 201 to help turn the scraps and improve the dehydration efficiency.

[0046] Example 1

[0047] like Figure 1-3 As shown, in this embodiment, the equipment housing 1 further includes a duct movable groove 102, a sealing edge 103, a cover 104, a discharge port 105, a water outlet 106, a first motor 107, and a first gear 108. The duct movable groove 102 is fixedly installed at the opening on the housing 101, and the inner wall of the duct movable groove 102 is fixedly connected to the base ring 205. The sealing edge 103 is fixedly installed on the upper edge of the inner wall of the duct movable groove 102. The cover 104 is snapped into the opening on the duct movable groove 102. The discharge port 105 is opened at the bottom side opening of the housing 101. The water outlet 106 is fixedly installed on one side edge of the bottom of the housing 101. The first motor 107 is fixedly installed on one side surface of the housing 101. The first gear 108 is fixedly installed at the output end of the first motor 107.

[0048] In this embodiment, the No. 1 motor 107 rotates the No. 1 gear 108, which in turn drives the No. 1 external gear ring 207 to rotate the mesh cylinder 201 inside the housing 101, thereby throwing out the wet material inside the mesh cylinder 201 to achieve centrifugal dehydration. The thrown-out water enters the gap between the housing 101 and the mesh cylinder 201 and is discharged from the outlet 106.

[0049] like Figure 2 , Figure 4 As shown, in this embodiment, the dewatering cylinder 2 further includes a bearing 202, an outer interface 206, and a first external gear ring 207. The inner ring of the bearing 202 is fixedly connected to the bottom opening of the mesh cylinder 201, and the outer ring of the bearing 202 is fixedly connected to the upper opening of the discharge port 105. The outer interface 206 is fixedly installed on one side of the base ring 205 and passes through the movable groove 102 of the air duct. The first external gear ring 207 is fixedly sleeved in the middle of the mesh cylinder 201 and meshes with the first gear 108.

[0050] In specific implementation, the bottom of the mesh cylinder 201 is rotatably connected to the discharge port 105 by the bearing 202, and the air groove 204 and the base ring 205 are rotatably connected by the sealed bearing to provide rotational support for the upper edge of the mesh cylinder 201, ensuring the stability of the mesh cylinder 201 when it rotates inside the shell 101. At the same time, without interfering with the rotation of each air inlet pipe 203 following the mesh cylinder 201, the airflow is stably diverted into the interior of each air inlet pipe 203 through the external air supply structure connected by the external interface 206.

[0051] Example 2

[0052] Based on Example 1, this invention supplements the specific discharge method after the plastic scraps have been dehydrated, which was not mentioned in Example 1.

[0053] like Figure 2 , Figure 5 As shown, in this embodiment, the sealing structure 3 includes a support frame 301, an electric push rod 302, a second external gear ring 303, a second gear 304, a second motor 305, a connecting rod 306, a sealing body 307, a third motor 308, and a stirring rod 309. There are two support frames 301, which are fixedly installed on one side of the housing 101. The side surface of the electric push rod 302 is rotatably connected to the support frame 301 via a bearing. The second external gear ring 303 is fixedly sleeved on the side surface of the electric push rod 302. In the middle section; one side of the No. 2 gear 304 meshes with the No. 2 external gear ring 303; the No. 2 motor 305 is fixedly installed on one side of the housing 101, and the output end of the No. 2 motor 305 is fixedly connected to the No. 2 gear 304; one end of the connecting rod 306 is fixedly connected to the output end of the electric push rod 302; the side surface of the sealing door body 307 is fixedly connected to the other end of the connecting rod 306; the No. 3 motor 308 is fixedly installed on the bottom side of the sealing door body 307; the lower end of the stirring rod 309 is fixedly connected to the output end of the No. 3 motor 308.

[0054] In practice, the sealing gate body 307 blocks the discharge port 105, and the stirring rod 309 is inserted into the bottom of the mesh cylinder 201. The stirring rod 309 is rotated in the opposite direction relative to the mesh cylinder 201 by the No. 3 motor 308 to stir and turn the plastic waste accumulated inside the mesh cylinder 201, thereby improving the dewatering effect. After dewatering is completed, the electric push rod 302 is started first to pull the sealing gate body 307 and the stirring rod 309 away from the bottom of the housing 101 and open the discharge port 105. Then, the No. 2 motor 305 is started, and through the transmission of the No. 2 gear 304 and the No. 2 external gear ring 303, the sealing gate body 307 is deflected to fully open the discharge port 105 so that the plastic can be discharged.

[0055] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0056] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A centrifugal dewatering device for recycling waste plastics, characterized in that, include: Equipment housing (1), the equipment housing (1) includes a shell (101); The dehydration cylinder (2) includes a mesh cylinder (201), which is rotatably installed inside the housing (101). Six air inlet pipes (203) are fixedly installed on the upper edge of the side surface of the mesh cylinder (201) in a ring at equal angles. The other end of the six air inlet pipes (203) is connected to the inner surface of the air trough (204). The air trough (204) is a ring structure. The upper and lower edges of the outer opening of the air trough (204) are rotatably connected to the inner surface of the base ring (205) through a sealed bearing. A sealing structure (3) is movably installed on the bottom side of the housing (101).

2. The centrifugal dewatering equipment for waste plastic recycling according to claim 1, characterized in that, The device housing (1) also includes: The duct movable groove (102) is fixedly installed at the opening on the housing (101), and the inner wall of the duct movable groove (102) is fixedly connected to the base ring (205); A sealing edge (103) is fixedly installed on the upper edge of the inner wall of the duct movable groove (102); A cover (104) is snapped into the opening of the duct movable groove (102); The discharge port (105) is located at the bottom opening of the housing (101); The water outlet (106) is fixedly installed on one side edge of the bottom of the housing (101).

3. The centrifugal dewatering equipment for waste plastic recycling according to claim 2, characterized in that, The device housing (1) also includes: Motor No. 1 (107) is fixedly installed on one side surface of housing (101); The first gear (108) is fixedly installed at the output end of the first motor (107).

4. The centrifugal dewatering equipment for waste plastic recycling according to claim 3, characterized in that, The dehydration cylinder (2) also includes: The bearing (202) is fixedly connected to the bottom opening of the mesh cylinder (201) and the outer ring of the bearing (202) is fixedly connected to the upper opening of the discharge port (105). External interface (206), the external interface (206) is fixedly installed on one side of the base ring (205) and passes through the duct movable groove (102); The first external gear ring (207) is fixedly sleeved in the middle of the mesh cylinder (201) and meshes with the first gear (108).

5. The centrifugal dewatering equipment for waste plastic recycling according to claim 4, characterized in that, The sealing structure (3) includes: Support (301), there are two support (301), and the two support (301) are fixedly installed on one side of the housing (101); Electric actuator (302), the side surface of which is rotatably connected to support frame (301) via bearing; The second external toothed ring (303) is fixedly sleeved on the middle part of the side surface of the electric push rod (302); The second gear (304) meshes with the second external gear ring (303) on one side; The second motor (305) is fixedly installed on one side of the housing (101), and the output end of the second motor (305) is fixedly connected to the second gear (304).

6. The centrifugal dewatering equipment for waste plastic recycling according to claim 5, characterized in that, The sealing structure (3) also includes: Linkage rod (306), one end of which is fixedly connected to the output end of electric actuator (302); A door sealing body (307) is fixedly connected to the other end of a connecting rod (306) on its side surface; The No. 3 motor (308) is fixedly installed on the bottom side of the sealing door body (307); A stirring rod (309) is provided, the lower end of which is fixedly connected to the output end of motor No. 3 (308).

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