Plastic particle drying device

Abstract

The invention relates to the field of plastic products, and particularly discloses a plastic particle drying device which comprises a heat preservation drying box, a pipeline unit, a water absorption unit and a heating unit. The two side faces of the heat preservation drying box are fixedly connected with a pipeline unit and a water absorption unit. A plurality of pipeline units are connected to the heat preservation drying box in an inserted mode. The multiple pipeline units are inserted into the heat preservation drying box and make uniform full contact with plastic particles, so that all the plastic particles can be heated and dried at the same time, air in the heat preservation drying box, the pipeline units, the water suction unit and the heating unit is driven to flow under the work of the air suction pump, and the plastic particles are heated and dried. The plastic particles are heated and dried under the heating air of the heating unit, water vapor generated by heating the plastic particles can enter the water absorption unit along with the air to absorb moisture, and then the water vapor enters the heating unit to be heated again, so that the air with waste heat is recycled, and the drying efficiency is improved.

Description

Technical Field

[0001] The invention relates to the field of plastic products, in particular to a plastic particle drying device. Background Art

[0002] Plastic pellets refer to granular plastics. The shape of the pellets allows the plastic to be heated evenly during the heating and plasticizing process, which helps to increase the uniformity of plasticization, making it easier to mix with other additives later, and the product is smoother. It also makes it easier to fill the internal storage space of the container, maximizing the use of storage space.

[0003] The Chinese invention patent with publication number CN116945410A disclosed a plastic particle drying device on October 27, 2023, including an outer barrel body, the top and bottom ends of which are both conical; the present invention puts plastic particles into the drying barrel from a feed hopper, and the plastic particles will fall onto the connecting cover and be diverted by multiple partitions, so that the plastic particles are evenly distributed at the edge of the bottom plate. The plastic particles can be drained first through the drain holes, and the motor is started. During the rotation of the rotating drum and the drying barrel through the first gear and the second gear, the plastic particles are acted upon by centrifugal force and move toward the edge of the bottom plate. Since the circular inclined plate is inclined, the plastic particles can move upward along the circular inclined plate. During the high-speed rotation of the drying barrel, water on the plastic particles is thrown out from the water-throwing holes of the circular inclined plate. The circular baffle can prevent the plastic particles from being thrown out of the drying barrel from above, and the circular guide plate can guide the plastic particles moving to the top to the middle of the bottom plate.

[0004] However, the above-mentioned disclosed solutions have the following shortcomings: the existing plastic pellet drying equipment is complex and has a small drying space, which cannot dry a large number of plastic pellets at the same time. In addition, the centrifugal drying method can only remove most of the liquid on the surface of the plastic pellets, but cannot remove the remaining small amount of moisture, so the degree of drying cannot be achieved completely. Summary of the Invention

[0005] The purpose of the present invention is to solve the above technical problems and provide a plastic particle drying device.

[0006] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: a plastic particle drying device described in the present invention includes a heat-insulating drying box, a pipeline unit, a water absorption unit and a heating unit; the pipeline unit and the water absorption unit are fixedly connected to two side surfaces of the heat-insulating drying box; a plurality of pipeline units are connected and plugged into the heat-insulating drying box; the pipeline units are respectively connected to the pipeline units and the water absorption units; and an air extraction pump is connected and fixed between the pipeline units and the water absorption units.

[0008] Furthermore, the upper end of the heat-insulating drying box is detachably and sealedly fixed with a sealing cover; the sealing cover is slotted and magnetically connected to a magnetic sealing plate; the lower end of the heat-insulating drying box is fixed with multiple pillars; a discharge hopper is fixed between the pillars; and a plug-in plate is slotted in the discharge hopper.

[0009] Furthermore, the pipeline unit includes a first drying tube, a second drying tube, a first collecting tube and a first valve; the first drying tubes are evenly distributed and inserted in the heat-insulating drying box; the ends of the first drying tubes are connected and fixedly connected to the first collecting tube; the first collecting tube is connected and fixedly connected to the first valve; the end of the first collecting tube is connected and fixedly connected to the water absorption unit; the second drying tubes are evenly distributed and connected in multiple layers and inserted in the heat-insulating drying box and are in a vertical state with the first drying tubes; the ends of the second drying tubes are connected and fixedly connected to the second collecting tube; the second collecting tube is connected and fixedly connected to the second valve; the end of the second collecting tube is connected to the heating unit.

[0010] Furthermore, the water absorption unit includes a filter box and a secondary cover plate; the filter box is fixedly connected to the side of the heat-insulating drying box; the filter box is connected to the second collecting pipe; a collecting groove is opened inside the filter box; a plurality of drying drawers are inserted into the grooves on the side of the filter box; and a water absorption plate is inserted into the drying drawer.

[0011] Furthermore, the heating unit includes a heating box and a storage tank; the heating box is fixedly connected to the side of the heat-insulating drying box; the heating box is connected to the first collecting pipe; a storage tank is opened in the heating box; an air heater is fixedly connected in the storage tank; collecting grooves are fixedly connected at intervals in the storage tank; the collecting grooves are connected to the output end of the air heater.

[0012] Furthermore, the lower half of the first collecting pipe is provided with a plurality of lower half holes; the upper half of the second collecting pipe is provided with a plurality of upper half holes.

[0013] Furthermore, a collection box is inserted between the pillars; a placement plate is fixedly connected to the lower end of the vacuum pump; and the placement plate is fixedly connected between the filter box and the heating box.

[0014] The plastic particle drying device provided by the present invention has the following beneficial effects:

[0015] 1. The present invention connects multiple pipe units in a heat-insulating drying oven to uniformly and fully contact the plastic particles, thereby enabling all plastic particles to be heated and dried simultaneously. Under the operation of the vacuum pump, the air in the heat-insulating drying oven, the pipe unit, the water absorption unit, and the heating unit is driven to flow. Then, the plastic particles are heated and dried under the heated air of the heating unit. Then, the water vapor generated by the heated plastic particles can enter the water absorption unit along with the air to absorb moisture, and then enter the heating unit for reheating, thereby reusing the air with residual heat, thereby improving the drying efficiency. At the same time, a large number of plastic particles can be dried. In combination with a bucket elevator, a large volume of plastic particles can be continuously circulated and dried, solving the problems of low efficiency and inability to simultaneously dry a large number of plastic particles in existing centrifugal drying devices.

[0016] 2. The present invention uses a discharge hopper and a plug plate to control the discharge of plastic particles, so that the plastic particles can be dried for a long time. At the same time, under the sealing of the sealing cover, the air in the heat-insulating drying box forms an independent circulation path, so that heat will not be wasted as the hot air rises, thereby solving the problem of high drying energy consumption of existing hot air drying equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings;

[0018] Figure 1 This is a schematic diagram of the first axonometric structure of a plastic particle drying device;

[0019] Figure 2 This is a second axonometric structural diagram of a plastic particle drying device;

[0020] Figure 3 This is a schematic diagram of the third axonometric structure of a plastic particle drying device;

[0021] Figure 4 This is a schematic diagram of a first partial axonometric structure of a plastic particle drying device;

[0022] Figure 5 It is a schematic diagram of the fourth axonometric structure of a plastic particle drying device;

[0023] Figure 6 This is a schematic diagram of a second partial axonometric structure of a plastic particle drying device;

[0024] Figure 7 This is a schematic diagram of the third partial axonometric structure of a plastic particle drying device.

[0025] Explanation of the numbers in the figure: 1. Insulated drying oven; 2. Support; 3. Discharge hopper; 4. Insert plate; 5. Sealing cover; 6. First drying tube; 7. First collecting tube; 8. First valve; 9. Heating box; 10. Vacuum pump; 11. Filter box; 12. Secondary cover plate; 13. Collecting tank; 14. Drying drawer; 15. Water absorption plate; 16. Storage tank; 17. Air heater; 18. Collecting groove; 19. Second collecting tube; 20. Second valve; 21. Second drying tube; 22. Magnetic sealing plate; 23. Upper half hole; 24. Lower half hole; 29. ​​Collection box; 30. Placement plate. DETAILED DESCRIPTION

[0026] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] 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. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0028] It should be noted that all directional indications in the embodiments of the present invention (such as up-down-left-right-front-back...) are only used to explain the relative position relationship - movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0029] See also Figure 1-7As shown, a plastic particle drying device includes a heat preservation drying box 1, a pipeline unit, a water absorption unit and a heating unit; the pipeline unit and the water absorption unit are fixedly connected to the two sides of the heat preservation drying box 1; a plurality of pipeline units are connected and plugged into the heat preservation drying box 1; the pipeline units are respectively connected with the pipeline units and the water absorption unit; an air extraction pump 10 is connected and fixed between the pipeline unit and the water absorption unit; when working, the plurality of pipeline units are plugged into the heat preservation drying box 1 to uniformly and fully contact the plastic particles, so that all the plastic particles can be heated and dried at the same time, and the heat preservation drying is driven by the operation of the air extraction pump 10. The air in box 1, the piping unit, the water absorption unit and the heating unit flows, and then the plastic particles are heated and dried under the heated air of the heating unit. Then, the water vapor generated by the heated plastic particles can enter the water absorption unit along with the air to absorb moisture, and then enter the heating unit for reheating, thereby reusing the air with residual heat, so that the drying efficiency is improved, and a large number of plastic particles can be dried at the same time. In conjunction with the bucket elevator, the plastic particles of super-large volume can be continuously circulated and dried, which solves the problems of low efficiency and inability to dry a large number of plastic particles at the same time in the existing centrifugal drying device.

[0030] The upper end of the heat-insulating drying box 1 is detachably and sealedly fixedly connected with a sealing cover 5; the sealing cover 5 is slotted and magnetically connected with a magnetic sealing plate 22; the lower end of the heat-insulating drying box 1 is fixedly connected with a plurality of pillars 2; a discharge hopper 3 is fixedly connected between the pillars 2; a plug-in plate 4 is slotted and inserted into the discharge hopper 3; during operation, the discharge of plastic particles can be controlled by cooperating with the plug-in plate 4 through the discharge hopper 3, so that the plastic particles can be dried for a long time. At the same time, under the sealing of the sealing cover 5, the air in the heat-insulating drying box 1 forms an independent circulation path, so that heat will not be wasted as the hot air rises, thereby solving the problem of high drying energy consumption of the existing hot air drying equipment.

[0031] The pipeline unit includes a first drying pipe 6, a second drying pipe 21, a first collecting pipe 7 and a first valve 8; the first drying pipe 6 is evenly distributed and inserted in the heat-insulating drying box 1; the end of the first drying pipe 6 is connected and fixedly connected to the first collecting pipe 7; the first collecting pipe 7 is connected and fixedly connected to the first valve 8; the end of the first collecting pipe 7 is connected and fixedly connected to the water absorption unit; the second drying pipe 21 is evenly distributed and connected in multiple layers in the heat-insulating drying box 1 and is in a vertical state to the first drying pipe 6; the end of the second drying pipe 21 is connected and fixedly connected to the second collecting pipe 19; the second collecting pipe 19 is connected and fixedly connected to the second valve 20; the end of the second collecting pipe 19 is connected to the heating unit; when working, the second drying pipes 21 and the first drying pipes are arranged in multiple rows perpendicular to each other and spaced apart from each other. The tube 6 makes it possible to stratify the plastic particles filled in the heat-insulating drying box 1, thereby cooperating with the water absorption unit and the heating unit to realize the reuse of the heat of the dry air, and at the same time, all positions of all the plastic particles can be dried and adsorbed for moisture, so that the drying efficiency of large quantities of plastic particles is higher, and when drying a small amount of plastic particles, they only need to be slowly poured from the upper end of the heat-insulating drying box 1, and they can be heated with sufficient dry hot air during the descending process, so that during the descending process, the water volatilized by heating can be timely adsorbed and transferred, and can also be continuously heated and volatilized during the descending process, thereby maximizing the efficiency of heating and drying, and solving the problems of incomplete drying and low drying efficiency when drying large quantities of wet plastic particles with existing spin drying equipment.

[0032] The water absorption unit includes a filter box 11 and a secondary cover plate 12; the filter box 11 is fixedly connected to the side of the heat-insulating drying box 1; the filter box 11 is connected to the second collecting pipe 19; a collecting groove 13 is provided inside the filter box 11; a plurality of drying drawers 14 are inserted into the grooves on the side of the filter box 11; a water absorption plate 15 is inserted into the drying drawer 14; when working, the plurality of water absorption plates 15 are located on the flow path of the humid air, thereby absorbing moisture in the humid air, so that the air is dried, and can continue to be heated to dry the plastic particles, so that the heat of the initially heated air can be fully utilized, making it more energy-saving and environmentally friendly. The water absorption plate 15 made of reusable materials, such as sponge and silica gel, is more energy-saving and environmentally friendly, and solves the problem of low efficiency in the existing large-scale drying of plastic particles.

[0033] The heating unit includes a heating box 9 and a storage tank 16; the heating box 9 is fixed to the side of the heat preservation drying box 1; the heating box 9 is connected to the first collection pipe 7; a storage tank 16 is provided in the heating box 9; an air heater 17 is fixed in the storage tank 16; a collection groove 18 is fixed in the storage tank 16 at intervals; the collection groove 18 is connected to the output end of the air heater 17; when working, the air insulation chamber is formed by isolating the air heater 17 through the heating box 9, and then the air that has been dried and cooled can be heated again through the air heater 17 and sent along the first collection pipe 7 and the first The drying pipe 6 enters the heat-insulating drying box 1 to heat and dry the plastic particles, forming a cycle, thereby fully utilizing the heat generated by the air heater 17 using electricity, and the heating box 9, the filter box 11, the multiple first collecting pipes 7 and the second collecting pipes 19 surround the heat-insulating drying box 1, thereby keeping the plastic particles warm as much as possible, so that the heat utilization rate can be maximized, which is more energy-saving and power-saving. In addition, with the water-absorbing plate 15 made of reusable materials, it is more energy-saving and low-cost, suitable for the needs of drying large quantities of plastic particles, and solves the problem of low efficiency in the existing large-scale drying of plastic particles.

[0034] The lower half of the first collecting pipe 7 is provided with a plurality of lower half holes 24; the upper half of the second collecting pipe 19 is provided with a plurality of upper half holes 23; during operation, an air flow closed loop is formed by cooperating with the lower half holes 24 through the upper half holes 23, so that, driven by the vacuum pump 10, the moisture in the heat-insulating drying box 1 can be blown out by the dry hot air from the lower half holes 24 to heat and dry the plastic particles, and then sucked into the upper half holes 23 and transferred to the multi-layer drying drawers 14 and the water absorption plates 15 for adsorption transfer, so that the moisture in the plastic particles can be continuously discharged, so that the recycled air is kept dry and at a high temperature, so that the plastic particles can be dried quickly for use, thereby solving the problem that the existing equipment for drying plastic particles cannot dry a large number of plastic particles at the same time.

[0035] A collecting box 29 is inserted between the pillars 2; a placing plate 30 is fixedly connected to the lower end of the vacuum pump 10; the placing plate 30 is fixedly connected between the filter box 9 and the heating box 11; when working, the collecting box 29 is located below the discharge hopper 3, so that the plastic particles after drying can be quantitatively taken out, or an external conveyor belt can be connected to convey the dried plastic particles, so that the dried plastic particles can be quickly discharged; the vacuum pump 10 is suspended and fixed by the placing plate 30, so that the vibration of the vacuum pump 10 can be transmitted to the heat-insulating drying box 1, the heating box 9 and the filter box 11, so that the plastic particles in the heat-insulating drying box 1 can vibrate and change their own spacing, so that the water vapor generated by heating can be sucked in by the upper half hole 23 and blown out by the lower half hole 24 to heat and dry the plastic particles, and the wet plastic particles filled in the heat-insulating drying box 1 are heated and dried in layers, so that the drying efficiency is improved, and a large number of plastic particles can be dried at the same time, solving the problem that the existing spin drying cannot dry a large number of plastic particles at the same time.

[0036] The present invention adopts the above scheme, when in use, multiple pipe units are plugged into the heat-insulating drying box 1 to uniformly and fully contact the plastic particles, so that all the plastic particles can be heated and dried at the same time. Under the operation of the vacuum pump 10, the air in the heat-insulating drying box 1, the pipe unit, the water absorption unit and the heating unit will be driven to flow, and then the plastic particles will be heated and dried under the heated air of the heating unit. Then, the water vapor generated by the heated plastic particles can enter the water absorption unit with the air to absorb moisture, and then enter the heating unit to be reheated, thereby reusing the air with residual heat, so that the drying efficiency is improved, and a large number of plastic particles can be dried at the same time. In combination with the bucket elevator, the plastic particles of large volume can be continuously circulated and dried, solving the problems of low efficiency and inability to dry a large number of plastic particles at the same time of the existing centrifugal drying device; the discharge of plastic particles can be controlled by cooperating with the plug plate 4, so that the plastic particles can be dried for a long time, and at the same time, under the sealing of the sealing cover 5, the plastic particles can be dried. The air in the heat-insulating drying box 1 forms an independent circulation path, so that heat will not be wasted as the hot air rises, solving the problem of high drying energy consumption of the existing hot air drying equipment; by arranging the second drying tube 21 and the first drying tube 6 in multiple rows that are perpendicular to each other and spaced apart from each other, the plastic particles filled in the heat-insulating drying box 1 can be layered, so that the heat of the dry air can be reused by cooperating with the water absorption unit and the heating unit, and at the same time, all positions of all plastic particles can be dried and adsorbed for moisture, making the drying efficiency of large quantities of plastic particles higher, and when drying a small amount of plastic particles, they only need to be slowly poured from the upper end of the heat-insulating drying box 1, and they can be heated with the fully dry hot air during the descending process, so that the moisture volatilized by heating can be timely adsorbed and transferred during the descending process, and can also be continuously heated and volatilized during the descending process, thereby maximizing the efficiency of heating and drying, solving the problem of incomplete drying and low drying efficiency when drying a large number of wet plastic particles in the existing spin-drying drying equipment.

[0037] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0038] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A plastic particle drying device, characterized in that; The invention comprises a heat-insulating drying box (1), a pipeline unit, a water absorption unit and a heating unit; the pipeline unit and the water absorption unit are fixedly connected to two side surfaces of the heat-insulating drying box (1); a plurality of pipeline units are connected and plugged into the heat-insulating drying box (1); the pipeline units are respectively connected to the pipeline units and the water absorption unit; and an air extraction pump (10) is connected and fixedly connected between the pipeline units and the water absorption unit.

2. The plastic particle drying device according to claim 1, characterized in that: The upper end of the heat-insulating drying box (1) is detachably sealed and fixedly connected to a sealing cover (5); the sealing cover (5) is slotted and magnetically connected to a magnetic sealing plate (22); the lower end of the heat-insulating drying box (1) is fixedly connected to a plurality of pillars (2); a discharge hopper (3) is fixedly connected between the pillars (2); and a plug-in plate (4) is slotted and plugged into the discharge hopper (3).

3. The plastic particle drying device according to claim 2, characterized in that: The pipeline unit comprises a first drying pipe (6), a second drying pipe (21), a first collecting pipe (7) and a first valve (8); the first drying pipe (6) is uniformly inserted in the heat-insulating drying box (1); the end of the first drying pipe (6) is connected and fixedly connected to the first collecting pipe (7); the first collecting pipe (7) is connected and fixedly connected to the first valve (8); the end of the first collecting pipe (7) is connected and fixedly connected to the water absorption unit; the second drying pipe (21) is uniformly connected and inserted in the heat-insulating drying box (1) in multiple layers and is in a vertical state with the first drying pipe (6); the end of the second drying pipe (21) is connected and fixedly connected to the second collecting pipe (19); the second collecting pipe (19) is connected and fixedly connected to the second valve (20); the end of the second collecting pipe (19) is connected to the heating unit.

4. The plastic particle drying device according to claim 3, characterized in that: The water absorption unit comprises a filter box (11) and a secondary cover plate (12); the filter box (11) is fixedly connected to the side of the heat-insulating drying box (1); the filter box (11) is connected to the second collecting pipe (19); a collecting groove (13) is provided inside the filter box (11); a plurality of drying drawers (14) are inserted into the grooves on the side of the filter box (11); and a water absorption plate (15) is inserted into the drying drawers (14).

5. The plastic particle drying device according to claim 4, characterized in that: The heating unit comprises a heating box (9) and a storage tank (16); the heating box (9) is fixedly connected to the side of the heat-insulating drying box (1); the heating box (9) is communicated with a first collecting pipe (7); a storage tank (16) is provided in the heating box (9); an air heater (17) is fixedly connected in the storage tank (16); collecting grooves (18) are fixedly connected at intervals in the storage tank (16); the collecting grooves (18) are communicated with the output end of the air heater (17).

6. The plastic particle drying device according to claim 5, characterized in that: The lower half of the first collecting pipe (7) is provided with a plurality of lower half holes (24); the upper half of the second collecting pipe (19) is provided with a plurality of upper half holes (23).

7. The plastic particle drying device according to claim 6, characterized in that: A collecting box (29) is inserted between the pillars (2); a placement plate (30) is fixed to the lower end of the air extraction pump (10); and the placement plate (30) is fixed between the filter box (9) and the heating box (11).

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