Raw material pretreatment device for plastic processing

Abstract

The utility model discloses a raw material pretreatment device for plastic processing, which comprises a drying treatment box, a baffle plate is fixedly mounted on one side in the drying treatment box in the vertical direction, a discharge port is formed in the upper end of the baffle plate, and a feed port is formed in the lower end of the baffle plate. Due to the arrangement of the spiral conveying rod, the stirring blades, the transmission assembly and the like, when plastic raw materials are dried, through the arrangement of the transmission assembly, under the action of the spiral conveying rod and the stirring blades on the surface of the rotating shaft, the raw materials in the drying treatment box are horizontally stirred; and meanwhile, the raw materials in a feeding hopper and a discharging opening are discharged into the other side of the drying treatment box, the raw materials fall under the action of a first flow guide plate and a second flow guide plate, the falling raw materials are dispersed, and the raw materials are uniformly stirred. And the dryer can conveniently dry the dispersed raw materials, so that the evaporation speed of water on the surfaces of the raw materials is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of plastic processing, specifically is raw material pretreatment device for plastic processing. BACKGROUND

[0002] Plastic processing, also known as plastic forming processing, is a general term for various processes of converting synthetic resins or plastics into plastic products, and is a larger production department in the plastic industry. Plastic processing generally includes plastic batching, molding, machining, joining, modification, and assembly, etc. The latter four processes are carried out after the plastic has been molded into a product or semi-product, also known as secondary plastic processing. Granular plastics may absorb moisture or contain some water. When processing plastic raw materials, pretreatment drying is needed to control the moisture content of the raw materials to avoid affecting the quality of the finished product.

[0003] However, the current pretreatment drying of plastic raw materials not only has poor drying effect, but also has slow drying efficiency. During drying, the plastic cannot be dried more uniformly, and the plastic cannot be completely dried, which affects the processing quality in the later stage. Therefore, the utility model designs a raw material pretreatment device for plastic processing to solve the problems existing in the prior art. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a raw material pretreatment device for plastic processing to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a raw material pretreatment device for plastic processing, comprising: a drying treatment box, a baffle is fixedly installed in the vertical direction on one side of the inside of the drying treatment box, an outlet is formed in the upper end of the baffle, an inlet is formed in the lower end of the baffle, a spiral conveying rod is rotatably installed in the vertical direction on one side of the inside of the drying treatment box, the bottom of the spiral conveying rod extends to the bottom of the drying treatment box, a rotating shaft is rotatably installed in the vertical direction on the other side of the inside of the drying treatment box, the bottom of the rotating shaft extends to the bottom of the drying treatment box, stirring blades are fixedly installed on both sides of the upper end of the rotating shaft in a symmetrical manner, support columns are fixedly installed on the bottom of the drying treatment box in a symmetrical manner, a support plate is fixedly connected between the bottoms of the two support columns, a transmission assembly is arranged between the top of the support plate and the bottoms of the spiral conveying rod and the rotating shaft, an air extraction assembly is arranged between one side of the top of the drying treatment box and the top of the spiral conveying rod, a dryer is fixedly installed on the other side of the top of the drying treatment box, the lower end of the dryer extends to the inside of the drying treatment box, and a feeding hopper is fixedly installed on the upper end of the other side of the drying treatment box in an inclined manner.

[0006] Preferably, the transmission assembly comprises: a first gear, a second gear and a servo motor, the first gear is fixedly installed at the bottom of the rotating shaft, the second gear is fixedly installed at the bottom of the spiral conveying rod, the servo motor is fixedly installed at the top of the supporting plate, the output end of the servo motor is fixedly connected with a third gear, and the two sides of the third gear are meshed with one side of the first gear and one side of the second gear respectively.

[0007] Preferably, the air extraction assembly comprises: a filter plate, a brush rod and an air extractor, the filter plate is fixedly installed at the inside of one side of the upper end of the drying treatment box, one end of the filter plate is fixedly connected with the surface of the other side of the baffle, the middle part of the filter plate is rotatably installed with the top of the spiral conveying rod, the brush rod is provided with two, the two brush rods are fixedly installed at the two sides of the top of the spiral conveying rod, the surface of the brush rod is arranged on the bottom of the filter plate, the air extractor is fixedly installed at one side of the top of the drying treatment box, the bottom of the air extractor is fixedly connected with an air extraction cover, and one end of the air extraction cover extends into the inside of the drying treatment box.

[0008] Preferably, the surface of the lower end of the spiral conveying rod is provided with a sealing bearing, the inner ring of the sealing bearing is fixedly connected with the surface of the lower end of the spiral conveying rod, and the outer ring of the sealing bearing is fixedly connected with the inside of the drying treatment box.

[0009] Preferably, the other side of the inner wall of the upper end of the drying treatment box is fixedly and obliquely installed with a second flow guide plate, the upper end of the side, close to the second flow guide plate, of the baffle is fixedly and obliquely installed with a first flow guide plate, and the first flow guide plate is located above the second flow guide plate.

[0010] Preferably, the bottom of the drying treatment box is provided as an inclined surface, a discharging valve is fixedly installed at one side of the bottom of the drying treatment box, and the discharging valve is located at the low place of the inclined surface of the bottom of the drying treatment box.

[0011] Compared with the prior art, the utility model has the advantages of the following:

[0012] 1. The utility model discloses a spiral conveying rod, stirring blade and transmission assembly are set up, and the transmission assembly is set up in the drying treatment of plastic raw materials, and the stirring blade is under the action of the spiral conveying rod and the rotating shaft surface, and the raw materials in the drying treatment box are horizontally stirred, and the raw materials can be reciprocatingly circulated and turned upside down, the uniformity of the raw materials drying is further improved, and the drying efficiency is improved, and the raw materials in the inside of the feeding hopper and the discharge port are discharged to the inside of the other side of the drying treatment box, the raw materials fall under the action of the first flow guide plate and the second flow guide plate, the falling raw materials are dispersed, the dispersed raw materials are dried by the dryer, and the evaporation speed of the surface moisture of the raw materials is improved.

[0013] 2. This utility model, through the arrangement of components such as a spiral conveyor rod, brush rods, and a blower, allows the moisture from the drying process inside the drying chamber to be discharged through the exhaust hood at the lower end of the blower during the conveying of raw materials by the spiral conveyor rod. Furthermore, the two symmetrical brush rods at the top of the spiral conveyor rod sweep the raw materials adsorbed at the bottom of the filter plate off, thus preventing the filter pores on the surface of the filter plate from becoming clogged. Attached Figure Description

[0014] Figure 1 This is a schematic front sectional view of the present invention;

[0015] Figure 2 For the present utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0016] Figure 3 For the present utility model Figure 1 Enlarged schematic diagram of the structure at point B.

[0017] In the diagram: 1. Drying chamber; 101. Feed hopper; 2. Baffle; 201. Discharge port; 202. Feed port; 3. Screw conveyor; 4. Rotating shaft; 401. Stirring blade; 5. Support column; 6. Support plate; 7. Transmission assembly; 701. First gear; 702. Second gear; 703. Servo motor; 704. Third gear; 8. Exhaust assembly; 801. Filter plate; 802. Brush rod; 803. Exhaust fan; 804. Exhaust hood; 9. Dryer; 10. First guide plate; 11. Second guide plate. Detailed Implementation

[0018] 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.

[0019] Please see Figures 1-3This utility model provides an embodiment of a raw material pretreatment device for plastic processing, comprising: a drying chamber 1, a baffle 2 vertically fixedly installed on one side inside the drying chamber 1, with a discharge port 201 at the upper end of the baffle 2 and a feed port 202 at the lower end of the baffle 2; a spiral conveying rod 3 rotatably installed vertically on one side inside the drying chamber 1, with the bottom of the spiral conveying rod 3 extending to the bottom of the drying chamber 1; a rotating shaft 4 rotatably installed vertically on the other side inside the drying chamber 1, with the bottom of the rotating shaft 4 extending to the bottom of the drying chamber 1; stirring blades 401 symmetrically fixedly installed on both sides of the upper end of the rotating shaft 4; support columns 5 symmetrically fixedly installed at the bottom of the drying chamber 1; a support plate 6 fixedly connected between the bottoms of the two support columns 5; and the top of the support plate 6 and the bottom of the spiral conveying rod 3... A transmission assembly 7 is provided between the bottom of the rotating shaft 4. Through the transmission assembly 7, the raw material inside the drying chamber 1 is horizontally stirred by the action of the spiral conveying rod 3 and the stirring blades 401 on the surface of the rotating shaft 4, and the raw material can be tumbled up and down in a reciprocating cycle, which further improves the uniformity and efficiency of the drying of the raw material. An air extraction assembly 8 is provided between one side of the top of the drying chamber 1 and the top of the spiral conveying rod 3. The air extraction assembly 8 facilitates the rapid discharge of water vapor from the drying chamber 1, reducing the accumulation of water vapor inside the drying chamber 1 and affecting the drying of the raw material. A dryer 9 is fixedly installed on the other side of the top of the drying chamber 1, and the lower end of the dryer 9 extends into the interior of the drying chamber 1. A feed hopper 101 is fixedly installed at an angle on the upper end of the other side of the drying chamber 1.

[0020] Please see Figures 1-2In an embodiment of this utility model, the transmission assembly 7 includes a first gear 701, a second gear 702, and a servo motor 703. The first gear 701 is fixedly installed at the bottom of the rotating shaft 4, the second gear 702 is fixedly installed at the bottom of the spiral conveying rod 3, and the servo motor 703 is fixedly installed at the top of the support plate 6. The output end of the servo motor 703 is fixedly connected to a third gear 704, and the two sides of the third gear 704 mesh with one side of the first gear 701 and one side of the second gear 702, respectively. When drying the plastic raw materials inside the drying chamber 1, the raw materials enter the drying chamber 1 through the feed hopper 101. The servo motor 703 is started, and the output end of the servo motor 703 drives the third gear 704 to rotate. The two sides of the third gear 704 mesh with the first gear 701 fixed at the bottom of the rotating shaft 4 and the second gear 702 fixed at the bottom of the screw conveyor 3, respectively. This causes the rotating shaft 4 to drive the stirring blades 401 on the surface to rotate, stirring the raw materials inside the drying chamber 1 and increasing the evaporation rate of the moisture in the raw materials inside the drying chamber 1. At the same time, the second gear 702 drives the screw conveyor 3 to rotate, causing the raw materials at the bottom of the drying chamber 1 to move towards the lower end of the screw conveyor 3 under the action of the bottom inclined surface and the feed port 202. The raw materials are then conveyed above the screw conveyor 3 and fall back down from the top of the drying chamber 1 through the discharge port 201. This causes the plastic raw materials to circulate up and down repeatedly, further improving the uniformity of the drying process and the drying efficiency.

[0021] Please see Figure 1 and Figure 3 In an embodiment of this utility model: the exhaust assembly 8 includes: a filter plate 801, a brush rod 802, and an exhaust fan 803. The filter plate 801 is fixedly installed inside the upper side of the drying chamber 1. One end of the filter plate 801 is fixedly connected to the surface of the other side of the baffle 2. The middle part of the filter plate 801 is rotatably installed on the top of the spiral conveyor rod 3. Two brush rods 802 are provided. The two brush rods 802 are symmetrically fixedly installed on both sides of the top of the spiral conveyor rod 3. The surface of the brush rods 802 is laid on the bottom of the filter plate 801. The exhaust fan 803 is fixedly installed on one side of the top of the drying chamber 1. An exhaust hood 804 is fixedly connected to the bottom of the exhaust fan 803, and one end of the exhaust hood 804 extends into the interior of the drying chamber 1. During the conveying of raw materials by the screw conveyor 3, the moisture from the drying process inside the drying chamber 1 is discharged through the exhaust hood 804 at the lower end of the exhaust fan 803. At the same time, as the exhaust hood 804 generates suction, some plastic raw materials are adsorbed onto the bottom surface of the filter plate 801. Meanwhile, the filter holes on the surface of the filter plate 801 block the plastic granular raw materials. As the screw conveyor 3 rotates, the two symmetrical brush rods 802 at the top sweep the raw materials adsorbed at the bottom of the filter plate 801 off, thus preventing the filter holes on the surface of the filter plate 801 from becoming clogged.

[0022] Please see Figure 1 In this embodiment of the invention: a sealed bearing is provided on the surface of the lower end of the screw conveyor 3, and the inner ring of the sealed bearing is fixedly connected to the surface of the lower end of the screw conveyor 3, while the outer ring of the sealed bearing is fixedly connected to the interior of the drying chamber 1. The surface of the lower end of the rotating shaft 4 is also rotatably mounted to the interior of the drying chamber 1 via a sealed bearing. The sealing bearing improves the airtightness of the interior of the drying chamber 1.

[0023] Please see Figure 1 In this embodiment of the present invention: a second guide plate 11 is obliquely fixedly installed on the other side of the upper inner wall of the drying chamber 1, and a first guide plate 10 is obliquely fixedly installed on the upper end of the baffle 2 near the second guide plate 11, with the first guide plate 10 located above the second guide plate 11. The raw materials inside the feed hopper 101 and the discharge port 201 are discharged into the interior of the other side of the drying chamber 1. The raw materials fall onto the surface of the first guide plate 10, and through the oblique arrangement of the first guide plate 10, flow towards the surface of the second guide plate 11, thus dispersing the falling raw materials. This facilitates the drying of the dispersed raw materials by the dryer 9, thereby increasing the evaporation rate of moisture on the surface of the raw materials.

[0024] Please see Figure 1 In this embodiment of the invention: the bottom of the drying chamber 1 is designed as a slope, and a discharge valve is fixedly installed on one side of the bottom of the drying chamber 1, with the discharge valve located at the lower part of the slope of the bottom of the drying chamber 1. The slope of the bottom of the drying chamber 1 facilitates the movement of raw materials towards the lower rollers, thereby concentrating them towards the bottom of the screw conveyor 3. This facilitates the conveying of raw materials at the bottom of the drying chamber 1 by the screw conveyor 3, and also facilitates the discharge of raw materials from the interior of the drying chamber 1 during discharge.

[0025] Working Principle: When the power is turned on, the servo motor 703, exhaust fan 803, and dryer 9 are started during the drying process of plastic granules. The raw material enters the drying chamber 1 through the feed hopper 101. The output end of the servo motor 703 drives the third gear 704 to rotate, so that the two sides of the third gear 704 mesh with the first gear 701 fixed at the bottom of the rotating shaft 4 and the second gear 702 fixed at the bottom of the screw conveyor 3, respectively. This causes the rotating shaft 4 to drive the stirring blades 401 on its surface to rotate, stirring the raw material inside the drying chamber 1 and increasing the evaporation rate of the raw material's moisture. At the same time, the second gear 702 drives the screw conveyor 3 to rotate, causing the raw material at the bottom of the drying chamber 1 to move towards the lower end of the screw conveyor 3 under the action of the inclined surface at the bottom and the feed inlet 202. The raw material is then conveyed above the screw conveyor 3 and discharged through the outlet. The material from the feed inlet 201 falls again from above the drying chamber 1, causing the plastic raw material to circulate and tumble repeatedly. The material falls onto the surface of the first guide plate 10 and, due to the inclined arrangement of the first guide plate 10, flows to the surface of the second guide plate 11, dispersing the falling material and accelerating the evaporation of moisture from the material surface. During the material transport by the screw conveyor 3, the exhaust hood 804 at the lower end of the exhaust fan 803 expels the moisture from the drying chamber 1. Simultaneously, as the exhaust hood 804 generates suction, some plastic raw material adheres to the bottom surface of the filter plate 801. The filter pores on the surface of the filter plate 801 block the plastic granules. As the screw conveyor 3 rotates, the two symmetrical brush rods 802 at the top sweep the material adsorbed at the bottom of the filter plate 801 off, preventing clogging of the filter pores on the surface of the filter plate 801. Content not described in detail in this specification belongs to prior art known to those skilled in the art.

[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A raw material pretreatment device for plastic processing, comprising: A drying chamber (1) is characterized in that: a baffle (2) is fixedly installed vertically on one side inside the drying chamber (1), and a discharge port (201) is opened at the upper end of the baffle (2), and a feed port (202) is opened at the lower end of the baffle (2); a spiral conveying rod (3) is rotatably installed vertically on one side inside the drying chamber (1), and the bottom of the spiral conveying rod (3) extends to the bottom of the drying chamber (1); a rotating shaft (4) is rotatably installed vertically on the other side inside the drying chamber (1), and the bottom of the rotating shaft (4) extends to the bottom of the drying chamber (1); and stirring blades are symmetrically fixedly installed on both sides of the upper end of the rotating shaft (4). (401) Support columns (5) are symmetrically fixedly installed at the bottom of the drying box (1). Support plates (6) are fixedly connected between the bottoms of the two support columns (5). A transmission assembly (7) is provided between the top of the support plate (6) and the bottom of the screw conveyor (3) and the bottom of the rotating shaft (4). An air extraction assembly (8) is provided between one side of the top of the drying box (1) and the top of the screw conveyor (3). A dryer (9) is fixedly installed on the other side of the top of the drying box (1). The lower end of the dryer (9) extends into the interior of the drying box (1). A feed hopper (101) is fixedly installed at the upper end of the other side of the drying box (1).

2. The raw material pretreatment device for plastic processing according to claim 1, characterized in that: The transmission assembly (7) includes a first gear (701), a second gear (702), and a servo motor (703). The first gear (701) is fixedly installed at the bottom of the rotating shaft (4), the second gear (702) is fixedly installed at the bottom of the spiral conveyor (3), and the servo motor (703) is fixedly installed at the top of the support plate (6). The output end of the servo motor (703) is fixedly connected to a third gear (704), and the two sides of the third gear (704) mesh with one side of the first gear (701) and one side of the second gear (702), respectively.

3. The raw material pretreatment device for plastic processing according to claim 1, characterized in that: The exhaust assembly (8) includes: a filter plate (801), a brush rod (802), and an exhaust fan (803). The filter plate (801) is fixedly installed inside the upper side of the drying chamber (1). One end of the filter plate (801) is fixedly connected to the surface of the other side of the baffle (2). The middle part of the filter plate (801) is rotatably installed on the top of the spiral conveyor rod (3). There are two brush rods (802). The two brush rods (802) are symmetrically fixedly installed on both sides of the top of the spiral conveyor rod (3). The surface of the brush rod (802) is laid on the bottom of the filter plate (801). The exhaust fan (803) is fixedly installed on one side of the top of the drying chamber (1). The bottom of the exhaust fan (803) is fixedly connected to an exhaust hood (804), and one end of the exhaust hood (804) extends into the interior of the drying chamber (1).

4. The raw material pretreatment device for plastic processing according to claim 1, characterized in that: A sealed bearing is provided on the surface of the lower end of the spiral conveyor (3), and the inner ring of the sealed bearing is fixedly connected to the surface of the lower end of the spiral conveyor (3), while the outer ring of the sealed bearing is fixedly connected to the interior of the drying chamber (1).

5. The raw material pretreatment device for plastic processing according to claim 1, characterized in that: A second guide plate (11) is fixedly installed on the other side of the upper inner wall of the drying chamber (1). A first guide plate (10) is fixedly installed on the upper side of the baffle (2) near the second guide plate (11), and the first guide plate (10) is located above the second guide plate (11).

6. The raw material pretreatment device for plastic processing according to claim 1, characterized in that: The bottom of the drying chamber (1) is set as an inclined surface. A discharge valve is fixedly installed on one side of the bottom of the drying chamber (1), and the discharge valve is located at the lower part of the inclined surface at the bottom of the drying chamber (1).

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