Hot air circulation drying equipment

Abstract

The utility model discloses hot air circulation drying equipment, which relates to the technical field of plastic drying, and comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a box body, the top of one end of the box body is provided with a feeding hopper, and the bottom of the other end of the box body is provided with a discharging pipe; a material conveying structure is arranged at the end, away from the box body, of the feeding hopper, a worker adds plastic particles into the feeding tank, covers the tank cover and starts a driving motor, the driving motor enables a rotating rod to drive a conveying blade to rotate, a pipe valve is opened, the plastic particles enter a material conveying pipe through a feeding pipe, and the conveying blade rotates to evenly convey the plastic particles into the feeding hopper; plastic particles enter the box body through the feeding hopper; a bottom drying structure is arranged at the end, close to the feeding hopper, in the box body and used for drying the plastic particles. A transportation structure is arranged in the box body and is used for transporting plastic particles; a circulating structure is arranged at the upper end of the box body, heated gas can be recycled, and energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic drying, in particular to hot air circulation drying equipment. Background Art

[0002] Injection molded parts are mainly produced by injection molding machines. Before the materials enter the injection molding machine for melting, drying equipment is generally required to dry the materials to prevent moist raw materials from entering the injection molding machine and vaporizing the water under the action of high temperature and filling the molten raw materials, resulting in cavities in the side walls of the molded products, which reduces the quality of the molded products. An injection molding pipe drying device recorded in the patent with the existing patent announcement number CN219946875U first injects plastic particles through the feed hopper, and the plastic particles slide into the interior of the chassis through the feeding pipe, and the dryer is started. Through the hollow net setting of the unloading plate, hot air passes through the hollow net to dry the rolling plastic particles. The plastic particles that have been dried for the first time slide onto the conveyor belt, and then the conveyor belt and the hot air blower are started. The hot air generated by the hot air blower is discharged through the hot air pipe, and the plastic particles slowly conveyed on the conveyor belt are blown down for a second time, and then conveyed out of the chassis by the conveyor belt for collection and the next step. However, when the above equipment dries the plastic particles, the heat required in the drying process is limited, and most of the heat is discharged into the air along with the exhaust gas, thus causing a large loss of heat resources.

[0003] Based on this, a hot air circulation drying device is now provided to eliminate the disadvantages of the existing devices. Utility Model Content

[0004] The utility model aims to provide a hot air circulation drying device to solve the problem of large-scale loss of heat resources.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A hot air circulation drying device comprises a bottom plate, the upper end of which is fixedly connected to a box body, a feed hopper is installed on the top of one end of the box body, and a discharge pipe is installed on the bottom of the other end of the box body; a material transport structure is arranged at the end of the feed hopper away from the box body, which is used to evenly deliver plastic particles into the box body; a bottom drying structure is arranged at the end of the box body close to the feed hopper, which is used to dry the plastic particles; a transport structure is arranged inside the box body, which is used to transport the plastic particles; a circulation structure is arranged at the upper end of the box body, which is used to recover the gas inside the box body.

[0007] On the basis of the above technical solutions, the present invention also provides the following optional technical solutions:

[0008] In an optional scheme: the material transport structure includes a feeding tank, a hinged tank cover on the top of the feeding tank, the bottom of the feeding tank is fixedly connected to the feeding pipe, a pipe valve is installed at the connection between the feeding pipe and the feeding tank, the bottom of the feeding pipe is fixedly connected to the material transport pipe, one end of the material transport pipe is fixedly connected to the feed hopper, a rotating rod and transport leaves are installed inside the material transport pipe, the outer side wall of the rotating rod is fixedly connected to the transport leaves, one end of the rotating rod is fixedly connected to the output end of the driving motor, and the driving motor is installed at the end of the material transport pipe away from the feed hopper.

[0009] In an optional solution: the bottom drying structure includes an inclined plate, both ends of which are fixedly connected to baffles, the surface of the inclined plate is provided with a number of air holes with diameters smaller than those between the plastic particles, a hot air blower is installed under the inclined plate, the output end of the hot air blower is fixedly connected to an exhaust plate, and a number of air outlet holes are provided on the upper end of the exhaust plate.

[0010] In an optional solution: the transport structure includes a driving roller and an auxiliary roller, one end of the driving roller is fixedly connected to the output end of the rotating motor, a transport belt is installed on the outer surface of the driving roller and the auxiliary roller, and baffles are installed on both sides of the transport belt.

[0011] In an optional scheme: the circulation structure includes an air outlet pipe, one end of the air outlet pipe is fixedly connected to the top of one end of the box body, the other end of the air outlet pipe is fixedly connected to the circulation pump, the side of the circulation pump away from the air outlet pipe is fixedly connected to the circulation pipe, the end of the circulation pipe away from the circulation pump is fixedly connected to the check valve, the check valve is connected to the purification box through a pipeline, the other side of the purification box is connected to the heating box through a pipeline, and the heating box is connected to the exhaust assembly through a pipeline.

[0012] In an optional solution: the exhaust assembly includes a hair dryer, the input end of the hair dryer is connected to the heating box through a pipeline, the output end of the hair dryer is fixedly connected to a through plate, and the lower end of the through plate is fixedly connected to a plurality of air supply pipes.

[0013] In an optional solution: the outer surface of the conveyor belt is provided with an anti-slip layer.

[0014] In an optional solution: legs are fixedly connected to the four corners of the bottom of the base plate.

[0015] In an optional solution: the interior of the purification box is filled with activated carbon and molecular sieve dehumidification materials.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The utility model uses a material transport structure. The staff adds plastic particles into the feeding tank, covers the tank cover, starts the driving motor, and the driving motor causes the rotating rod to drive the transport blade to rotate. The pipe valve is opened, and the plastic particles enter the material transport pipe through the feed pipe. The transport blade rotates to evenly send the plastic particles into the hopper. The plastic particles enter the box through the hopper to avoid adhesion of the plastic particles and affect the drying effect.

[0018] 2. The utility model adopts a circulation structure, and the heated gas can be recycled, which can not only save energy and reduce emissions, but also avoid pollution to the environment and influence on the health of the operator due to direct discharge of heated gas. By providing a hair dryer, the plastic particles can be more fully in contact with the hot air, and the time required for drying can be reduced. The plastic particles are dried by the circulating hot air inside the box. The circulating hot air will also cause the dust and impurities carried by the particles to fly away with the hot air. By providing a purification box, the dust can be absorbed and filtered, and the molecular sieve dehumidification material can absorb moisture in the air, thereby dehumidifying, ensuring the cleanliness of the circulating hot air, and also cleaning the plastic particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a structural schematic diagram of the bottom position of the utility model.

[0021] Figure 3 It is a structural schematic diagram of each internal structural position of the utility model.

[0022] Figure 4 It is a structural schematic diagram of the bottom drying structure position of the utility model.

[0023] Figure 5 It is a structural schematic diagram of the transport structure position of the utility model.

[0024] Figure 6 It is a structural schematic diagram of the circulation structure position of the utility model.

[0025] Figure 7 It is a structural schematic diagram of the position of the exhaust component of the utility model.

[0026] Figure 8 It is a structural schematic diagram of the material transport structure position of the utility model.

[0027] Fig. 9 It is a structural schematic diagram of the baffle position of the utility model.

[0028] Notes on the figure numbers: 11. Box body; 12. Bottom plate; 13. Support legs; 14. Feed hopper; 15. Discharge pipe; 16. Hot air blower; 17. Exhaust plate; 18. Inclined plate; 19. Rotating motor; 20. Active roller; 21. Auxiliary roller; 22. Conveyor belt; 23. Blower; 24. Through plate; 25. Air supply pipe; 26. Exhaust pipe; 27. Circulation pump; 28. Circulation pipe; 29. ​​Check valve; 30. Purification box; 31. Heating box; 32. Feeding tank; 33. Tank cover; 34. Feed pipe; 35. Pipe valve; 36. Material transport pipe; 37. Driving motor; 38. Rotating rod; 39. Transport blade; 40. Baffle. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] Example 1

[0031] In one embodiment, Figure 1-Figure 9 As shown, a hot air circulation drying equipment comprises a bottom plate 12, the upper end of the bottom plate 12 is fixedly connected to a box body 11, a feed hopper 14 is installed on the top of one end of the box body 11, and a discharge pipe 15 is installed on the bottom of the other end of the box body 11; a material transport structure is arranged at the end of the feed hopper 14 away from the box body 11, which is used to evenly deliver plastic particles into the box body 11; a bottom drying structure is arranged at the end of the box body 11 close to the feed hopper 14, which is used to dry the plastic particles; a transport structure is arranged inside the box body 11, which is used to transport plastic particles; a circulation structure is arranged at the upper end of the box body 11, which is used to recover the gas inside the box body 11.

[0032] In this embodiment, first, the staff transports the plastic particles to the inside of the hopper 14 through the material transport structure. The plastic particles pass into the hopper 14 and enter the inside of the box 11. The plastic particles are dried by the bottom drying structure. Then the transport structure transports the plastic particles. At the same time, the circulation structure recycles the gas inside the box 11 to heat and dry the plastic particles again. Finally, the plastic particles are discharged through the discharge pipe 15.

[0033] In one embodiment, Figure 1 and Figure 8As shown, the material transport structure includes a feeding tank 32, a tank cover 33 is hinged on the top of the feeding tank 32, the bottom end of the feeding tank 32 is fixedly connected to a feeding pipe 34, a pipe valve 35 is installed at the connection between the feeding pipe 34 and the feeding tank 32, the bottom end of the feeding pipe 34 is fixedly connected to a material transport pipe 36, one end of the material transport pipe 36 is fixedly connected to the feed hopper 14, a rotating rod 38 and a transport leaf 39 are installed inside the material transport pipe 36, the outer wall of the rotating rod 38 is fixedly connected to the transport leaf 39, one end of the rotating rod 38 is fixedly connected to the output end of the driving motor 37, and the driving motor 37 is installed at the end of the material transport pipe 36 away from the feed hopper 14. The staff adds plastic particles into the feeding tank 32, then covers the tank cover 33, starts the drive motor 37, and opens the pipe valve 35. The plastic particles enter the material transport pipe 36 through the feed pipe 34. The drive motor 37 drives the rotating rod 38 to rotate, and the transport leaves 39 rotate accordingly. When the transport leaves 39 rotate, they drive the plastic particles to move, thereby sending the plastic particles into the hopper 14. The plastic particles pass into the hopper 14 and enter the interior of the box body 11 to prevent the plastic particles from sticking to each other, resulting in poor subsequent drying effect.

[0034] In one embodiment, Figure 4 and Fig. 9 As shown, the bottom drying structure includes an inclined plate 18, both ends of which are fixedly connected to baffles 40, and the surface of the inclined plate 18 is provided with a plurality of air holes with diameters smaller than those between the plastic particles, and a hot air blower 16 is installed below the inclined plate 18, and the output end of the hot air blower 16 is fixedly connected to an exhaust plate 17, and a plurality of air outlet holes are provided at the upper end of the exhaust plate 17. The plastic particles slide down through the inclined plate 18, and the hot air blower 16 generates hot air when it is running, and the hot air is discharged through the air outlet holes at the upper end of the exhaust plate 17, and then the hot air dries the plastic particles through the air holes on the surface of the inclined plate 18.

[0035] In one embodiment, Figure 5 and Fig. 9 As shown, the transport structure includes a driving roller 20 and an auxiliary roller 21, one end of the driving roller 20 is fixedly connected to the output end of the rotating motor 19, and a conveyor belt 22 is installed on the outer surface of the driving roller 20 and the auxiliary roller 21, and baffles 40 are installed on both sides of the conveyor belt 22. The rotating motor 19 runs, driving the driving roller 20 to rotate, so that the conveyor belt 22 runs synchronously, and then the conveyor belt 22 transports plastic particles.

[0036] In one embodiment, Figure 6As shown, the circulation structure includes an outlet pipe 26, one end of which is fixedly connected to the top of one end of the box 11, and the other end of which is fixedly connected to a circulation pump 27. The side of the circulation pump 27 away from the outlet pipe 26 is fixedly connected to a circulation pipe 28, and the end of the circulation pipe 28 away from the circulation pump 27 is fixedly connected to a check valve 29, and the check valve 29 is connected to a purification box 30 through a pipeline, and the other side of the purification box 30 is connected to a heating box 31 through a pipeline, and the heating box 31 is connected to an exhaust assembly through a pipeline. The gas inside the box 11 enters the circulation pump 27 through the outlet pipe 26, and then enters the purification box 30 through the circulation pipe 28 through the check valve 29. The purification box 30 filters, purifies and dehumidifies the gas, and the filtered gas enters the heating box 31 for heating, and finally enters the box 11 through the exhaust assembly to dry the plastic particles, so that the heated gas can be recycled, which can save energy and reduce emissions, and avoid pollution to the environment and the health of the operator due to the direct discharge of heated gas.

[0037] In one embodiment, Figure 7 As shown, the exhaust assembly includes a blower 23, the input end of the blower 23 is connected to the heating box 31 through a pipeline, the output end of the blower 23 is fixedly connected to the through plate 24, and the lower end of the through plate 24 is fixedly connected to a plurality of air supply pipes 25. When the blower 23 is running, the heated gas enters the through plate 24, and then is discharged into the box body 11 through the air supply pipes 25 at the lower end of the through plate 24, thereby performing a secondary drying process on the plastic particles.

[0038] Example 2

[0039] In one embodiment, Figure 5 As shown, an anti-skid layer is provided on the outer surface of the conveyor belt 22. The anti-skid layer design increases the friction on the outer surface of the conveyor belt 22, so that the conveyor belt 22 can better transport plastic particles.

[0040] In one embodiment, Figure 2 As shown, the four corners of the bottom of the bottom plate 12 are fixedly connected with legs 13. The legs 13 are arranged at the four corners of the bottom of the bottom plate 12 to provide stable support and ensure the normal operation of the plastic particle drying.

[0041] In one embodiment, Figure 7 As shown, the purification box 30 is filled with activated carbon and molecular sieve dehumidification material. The activated carbon can absorb dust and impurities in the gas, thereby filtering and purifying the gas, thereby ensuring the cleanliness of the circulating gas, and the pores of the molecular sieve dehumidification material can capture moisture, thereby achieving a dehumidification effect.

[0042] The above embodiment discloses a hot air circulation drying device, in which a worker adds plastic particles into a feeding tank 32, then covers the tank cover 33, starts a driving motor 37, and opens a pipe valve 35 at the same time. The plastic particles enter the material transport pipe 36 through the feeding pipe 34, and the driving motor 37 drives the rotating rod 38 to rotate, and the transport leaf 39 rotates accordingly. When the transport leaf 39 rotates, it drives the plastic particles to move, thereby sending the plastic particles into the hopper 14. The plastic particles pass through the hopper 14 and enter the interior of the box body 11. The plastic particles slide down through the inclined plate 18, and the hot air blower 16 generates hot air when it runs. The hot air is discharged through the air outlet at the upper end of the exhaust plate 17, and then the hot air The plastic particles are dried through the pores on the surface of the inclined plate 18, and the plastic particles slide onto the conveyor belt 22. The rotating motor 19 drives the active roller 20 to rotate, so that the conveyor belt 22 transports the plastic particles. During the transportation process, the gas inside the box 11 enters the circulation pump 27 through the outlet pipe 26, and then passes through the check valve 29 through the circulation pipe 28 to enter the purification box 30. The purification box 30 filters, purifies and dehumidifies the gas. The filtered gas enters the heating box 31 for heating. The heated gas is discharged into the box 11 through the operation of the hair dryer 23, and the plastic particles are dried for a second time. Finally, the plastic particles are discharged through the discharge pipe 15.

[0043] The above is only a specific implementation of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A hot air circulation drying device, comprising a bottom plate (12), the upper end of the bottom plate (12) being fixedly connected to a box body (11), a feeding hopper (14) being installed at the top of one end of the box body (11), and a discharging pipe (15) being installed at the bottom of the other end of the box body (11); It is characterized in that It also includes a material transport structure, which is arranged at one end of the feed hopper (14) away from the box body (11) and is used to uniformly transport plastic particles into the box body (11); A bottom drying structure, the bottom drying structure is arranged inside the box (11) at one end close to the hopper (14), and is used to dry the plastic particles; A transport structure, which is arranged inside the box (11) and is used to transport plastic particles; A circulation structure, the circulation structure being arranged at the upper end of the box body (11) and being used for recovering the gas inside the box body (11); The circulation structure comprises an air outlet pipe (26), one end of the air outlet pipe (26) is fixedly connected to the top of one end of the box body (11), the other end of the air outlet pipe (26) is fixedly connected to a circulation pump (27), the side of the circulation pump (27) away from the air outlet pipe (26) is fixedly connected to a circulation pipe (28), the end of the circulation pipe (28) away from the circulation pump (27) is fixedly connected to a check valve (29), the check valve (29) is connected to a purification box (30) through a pipeline, the other side of the purification box (30) is connected to a heating box (31) through a pipeline, and the heating box (31) is connected to an exhaust assembly through a pipeline; The exhaust assembly comprises a blower (23); the input end of the blower (23) is connected to a heating box (31) via a pipeline; the output end of the blower (23) is fixedly connected to a through plate (24); and the lower end of the through plate (24) is fixedly connected to a plurality of air supply pipes (25).

2. The hot air circulation drying equipment according to claim 1, characterized in that: The material transport structure comprises a feeding tank (32), the top of the feeding tank (32) is hinged with a tank cover (33), the bottom of the feeding tank (32) is fixedly connected to a feeding pipe (34), a pipe valve (35) is installed at the connection between the feeding pipe (34) and the feeding tank (32), the bottom of the feeding pipe (34) is fixedly connected to a material transport pipe (36), one end of the material transport pipe (36) is fixedly connected to a feed hopper (14), a rotating rod (38) and a transport blade (39) are installed inside the material transport pipe (36), the outer side wall of the rotating rod (38) is fixedly connected to the transport blade (39), one end of the rotating rod (38) is fixedly connected to the output end of a driving motor (37), and the driving motor (37) is installed at one end of the material transport pipe (36) away from the feed hopper (14).

3. The hot air circulation drying equipment according to claim 1, characterized in that: The bottom drying structure comprises an inclined plate (18), both ends of the inclined plate (18) are fixedly connected to baffles (40), a surface of the inclined plate (18) is provided with a plurality of air holes with diameters smaller than those between the plastic particles, a hot air blower (16) is installed below the inclined plate (18), an output end of the hot air blower (16) is fixedly connected to an exhaust plate (17), and a plurality of air outlet holes are provided at the upper end of the exhaust plate (17).

4. The hot air circulation drying equipment according to claim 1, characterized in that: The transport structure comprises a driving roller (20) and an auxiliary roller (21), one end of the driving roller (20) is fixedly connected to the output end of the rotating motor (19), and a transport belt (22) is installed on the outer surface of the driving roller (20) and the auxiliary roller (21), and baffles (40) are installed on both sides of the transport belt (22).

5. The hot air circulation drying equipment according to claim 4, characterized in that: The outer surface of the conveyor belt (22) is provided with an anti-slip layer.

6. The hot air circulation drying equipment according to claim 1, characterized in that: Support legs (13) are fixedly connected to the four corners of the bottom of the base plate (12).

7. The hot air circulation drying equipment according to claim 1, characterized in that: The purification box (30) is filled with activated carbon and molecular sieve dehumidification materials.

Images