A polyamide 66 modified particle drying device

Abstract

The present invention provides a drying device for polyamide 66 modified particles, belonging to the technical field of particulate matter drying, and is used to solve the technical problem that when the existing drying device dries polyamide 66 modified particles, the contact time between the polyamide 66 modified particles and hot air is short, and the drying effect is poor. It includes an inner cylinder and an outer cylinder. There is a discharge mechanism, a feeding mechanism and a spiral lifting mechanism between the inner cylinder and the outer cylinder. A discharge pipe is connected to the outer side above the outer cylinder. A funnel is fixed inside the inner cylinder, and a feeding pipe is connected to the bottom of the funnel. One end of the feeding pipe is connected to the inner cylinder. There is a hot air guiding mechanism between the inner cylinder and the outer cylinder; the present invention transports the polyamide 66 modified particles to be dried in a spiral stepped manner, extends the transportation path, increases the contact time between the polyamide 66 modified particles and hot air, and tumbles the material during the transportation process, further increasing the contact area between the polyamide 66 modified particles and hot air, and improving the drying effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of particulate drying, and relates to a drying device for polyamide 66 modified particles. Background Art

[0002] Polyamide 66 modified particles are a kind of thermoplastic resin, generally prepared by polycondensation of adipic acid and hexamethylenediamine, insoluble in general solvents, only soluble in m-cresol, etc. It has very high mechanical strength and hardness, and great rigidity. It can be used as engineering plastics, mechanical accessories such as gears and lubricating bearings, replace non-ferrous metal materials to make machine casings, automobile engine blades, etc., and other products that require impact resistance and high strength requirements. It can also be used to make synthetic fibers;

[0003] After retrieval, as disclosed in a Chinese patent document for a rapid drying device for the production of modified plastic particles [Application No.: CN202221511467.9; Publication No.: CN217834324U]. This rapid drying device includes a drying tower body, in which a first buffer section, a first drying section, a second buffer section, and a second drying section are provided from top to bottom. The first drying section is provided with a cold air drying system, and the second drying section is provided with a hot air drying system. The plastic particles are dehumidified by cold air in the first drying section, and the excess moisture on the surface of the plastic particles is blown off to reduce the drying load of the second drying section. Then, the plastic particles are dried by hot air in the second drying section to dry the plastic more completely. Although the drying efficiency can be improved, the drying of polyamide 66 modified particles requires a long drying time. When this device dries polyamide 66 modified particles, the polyamide 66 modified particles fall freely, and the contact time with hot air is short, and the drying effect is not ideal.

[0004] Based on this, we have designed a drying device for polyamide 66 modified particles with good drying effect. Summary of the Invention

[0005] The purpose of the present invention is to address the above problems existing in the prior art and propose a drying device for polyamide 66 modified particles. The technical problem to be solved by this device is: how to increase the contact time between polyamide 66 modified particles and hot air and improve the drying effect.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A polyamide 66 modified particle drying device, comprising an inner cylinder and an outer cylinder. The inner cylinder is located inside the outer cylinder, and upper and lower sealing rings are respectively fixed at both ends of the inner cylinder and the outer cylinder. A support frame is arranged on the outer side of the outer cylinder. An unloading mechanism, a feeding mechanism and a spiral lifting mechanism for conveying materials are arranged between the inner cylinder and the outer cylinder. An inclined downward unloading pipe is connected to the outer side above the outer cylinder, and the unloading mechanism is aligned with the unloading pipe. A funnel is fixed inside the inner cylinder, and a feeding pipe is connected to the bottom of the funnel. The end of the feeding pipe away from the funnel is connected to the inner cylinder, and the inside of the feeding pipe communicates with the gap between the inner cylinder and the outer cylinder. A hot air guiding mechanism for drying is arranged between the inner cylinder and the outer cylinder.

[0008] The working principle of the present invention is: when in use, first connect the hot air guiding mechanism to a hot air generating device, so that hot air flows from top to bottom between the inner cylinder and the outer cylinder. Then, the polyamide 66 modified particles to be dried are conveyed into the inner cylinder. Under the action of the funnel and the feeding pipe, the materials enter between the inner cylinder and the outer cylinder, and enter the bottom of the spiral lifting mechanism under the action of the feeding mechanism. Then, under the action of the spiral lifting mechanism, the materials spiral upward between the inner cylinder and the outer cylinder, extending the conveying path of the materials and fully contacting with the hot air, improving the drying effect. Finally, the materials are discharged through the unloading mechanism and the unloading pipe for the operator to collect conveniently.

[0009] The spiral lifting mechanism includes a plurality of lifting blocks and a plurality of connecting rods. The number of lifting blocks is an even number. The lifting blocks are spirally distributed between the inner cylinder and the outer cylinder. The inner and outer sides of the lifting blocks are respectively attached to the inner cylinder and the outer cylinder, and adjacent two lifting blocks are attached to each other. The upper surface of the lifting block is inclined. The corresponding lifting blocks are fixed to each other by connecting rods. A plurality of sliding holes are opened on the lower sealing ring. The lower end of the connecting rod penetrates through the corresponding sliding hole, and a driving component for lifting the connecting rod is arranged at the lower end of the connecting rod.

[0010] With the above structure, under the action of the driving component, the alternating connecting rods rise and fall synchronously, and the adjacent connecting rods rise and fall alternately. The connecting rods drive the lifting blocks fixed to them to move upward, pushing the materials staying on the upper surface of the lifting blocks upward. Under the action of the inclination of the upper surface of the lifting block, the materials move to another adjacent lifting block. Then the lifting block moves downward and resets, and then another adjacent lifting block lifts upward. Repeating the above steps in a cycle, the materials can be gradually moved upward along the spiral path, and the materials will be tumbled during the movement, so that all surfaces of the materials can fully contact with the hot air, and the contact time is relatively long, and the drying effect is good.

[0011] The driving assembly includes a first lifting plate and a second lifting plate located below the outer cylinder. The first lifting plate is above the second lifting plate. A number of notches are formed at the edge of the first lifting plate, and a through hole is formed at the middle position of the first lifting plate. A fixing plate is fixed to the bottom of the inner cylinder, and a first hydraulic cylinder and a second hydraulic cylinder are fixed below the fixing plate. The output end of the first hydraulic cylinder is fixedly connected to the first lifting plate, and the output end of the second hydraulic cylinder passes through the through hole and is fixedly connected to the second lifting plate. The connecting rod at the corresponding position is fixedly connected to the first lifting plate, and the other connecting rod passes through the notch and is connected to the second lifting plate.

[0012] With the above structure, during use, the first hydraulic cylinder and the second hydraulic cylinder operate alternately. The lifting block at the corresponding position is driven by the connecting rod to move upward, and the material above it is moved to another adjacent lifting block. Repeating this cycle can achieve the effect of transporting materials.

[0013] The discharging mechanism includes a transfer box. The transfer box is inclined and arranged above the lifting block close to the discharging pipe. An outlet is formed on the side wall of the transfer box close to the outer cylinder, and the outlet is located below the discharging pipe. An inlet is formed at the side end of the transfer box. A sealing plate is fixed between the inner cylinder and the outer cylinder, and the sealing plate is directly above the inlet.

[0014] With the above structure, during use, when the adjacent lifting block lifts the material above it upward, the material enters the transfer box through the inlet and accumulates at the bottom of the transfer box. Then the lifting block below the transfer box moves upward. At this time, the inlet is gradually blocked by the sealing plate, and the hot air between the inner cylinder and the outer cylinder will not enter the transfer box. As the transfer box rises, the outlet aligns with the discharging pipe, and the material in the transfer box is discharged outward through the discharging pipe to complete drying. During the discharging process, the transfer box can be sealed to prevent the hot air from being discharged through the discharging pipe and burning the operator, which is convenient for collecting the material.

[0015] The feeding mechanism includes a cross plate. The cross plate is fixed above the lifting block close to the feeding pipe. One end of the cross plate is fixed with a vertical plate, and the vertical plate is attached to the side end of the adjacent lifting block. A sealing plate is fixed below the lifting block, and the sealing plate is attached to the inner cylinder and aligned with the feeding pipe.

[0016] With the above structure, during use, the material inside the inner cylinder fills the gap between the vertical plate, the cross plate and the lifting block through the feeding pipe. When the lifting block moves upward, it can drive the material to move upward and finally move from below the vertical plate to the adjacent lifting block. At this time, the sealing plate moves upward with the lifting block and blocks the feeding pipe to prevent the material from entering.

[0017] The hot air guiding mechanism includes an air inlet pipe fixed on the upper sealing ring, and a wind blocking plate is fixed between the inner cylinder and the outer cylinder. The wind blocking plate is located directly below the air inlet pipe. A plurality of ventilation holes are evenly distributed in a circumferential manner at the bottom of the inner cylinder. A plurality of connecting holes are evenly distributed on the funnel, and a heat conduction pipe is connected to the connecting holes.

[0018] With the above structure, during use, dry hot air is introduced into the air inlet pipe. Under the action of the wind blocking plate, the air flow will not generate too much impact on the material and will not hinder the movement of the material. The introduced hot air moves downward along the spiral channel formed between the lifting blocks and fully contacts the material during the movement process to dry the material. Finally, the hot air flows into the heat conduction pipe through the ventilation holes and the connecting holes and is discharged from the upper part of the heat conduction pipe. When the hot air passes through the heat conduction pipe, it can preheat the material inside the inner cylinder, make full use of the heat of the hot air, reduce the subsequent drying load, and further improve the drying effect.

[0019] Compared with the prior art, the polyamide 66 modified particle drying device of the present invention has the following advantages:

[0020] Through the inner cylinder, the outer cylinder and the spiral lifting mechanism, the polyamide 66 modified particles to be dried are transported in a spiral stepped manner, extending the transportation path, increasing the contact time between the polyamide 66 modified particles and the hot air, and turning the material during the transportation process to further increase the contact area between the polyamide 66 modified particles and the hot air, improving the drying effect.

[0021] Through the hot air guiding mechanism, when discharging the hot air, the heat of the hot air is further utilized to preheat the polyamide 66 modified particles inside the inner cylinder, making full use of the heat of the hot air, reducing the subsequent drying load, and further improving the drying effect.

[0022] Through the discharging mechanism, the dried polyamide 66 modified particles are discharged, and at the same time of discharging the material, the discharging pipe and the hot air can be separated to prevent the hot air from being discharged from the discharging pipe and burning the operator, facilitating the collection of the material. Description of the Drawings

[0023] Figure 1 is the three-dimensional structure schematic diagram of the present invention;

[0024] Figure 2 is the internal structure schematic diagram of the outer cylinder of the present invention;

[0025] Figure 3 is the internal structure schematic diagram of the inner cylinder of the present invention;

[0026] Figure 4 is the structure schematic diagram of the driving component of the present invention;

[0027] Figure 5It is a schematic structural diagram of the discharging mechanism in the present invention;

[0028] Figure 6 It is a schematic structural diagram of the feeding mechanism in the present invention;

[0029] In the figure: 1, inner cylinder; 2, outer cylinder; 3, upper sealing ring; 4, lower sealing ring; 5, spiral lifting mechanism; 501, lifting block; 502, connecting rod; 503, first lifting plate; 504, second lifting plate; 505, through hole; 506, notch; 507, first hydraulic cylinder; 508, second hydraulic cylinder; 509, fixing plate; 6, discharging pipe; 7, discharging mechanism; 701, transfer box; 702, feeding port; 703, discharging port; 704, blocking plate; 8, funnel; 9, feeding pipe; 10, feeding mechanism; 1001, horizontal plate; 1002, vertical plate; 1003, sealing plate; 11, hot air guiding mechanism; 1101, air inlet pipe; 1102, air blocking plate; 1103, ventilation hole; 1104, connecting hole; 1105, heat conducting pipe; 12, support frame. Detailed implementation manners

[0030] The technical solutions of this patent will be further described in detail below in conjunction with the specific implementation manners.

[0031] The embodiments of this patent are described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation to this patent.

[0032] In the description of this patent, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this patent.

[0033] In the description of this patent, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", "connection", "setting" should be understood in a broad sense. For example, it can be fixedly connected and set, or detachably connected and set, or integrally connected and set. For those of ordinary skill in the art, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0034] Please refer to Figure 1-6, this embodiment provides a drying device for polyamide 66 modified particles, which includes an inner cylinder 1 and an outer cylinder 2. The inner cylinder 1 is located inside the outer cylinder 2, and upper sealing rings 3 and lower sealing rings 4 are respectively fixed at both ends of the inner cylinder 1 and the outer cylinder 2. A support frame 12 is arranged on the outer side of the outer cylinder 2. An outlet mechanism 7, a feeding mechanism 10 and a spiral lifting mechanism 5 for conveying materials are arranged between the inner cylinder 1 and the outer cylinder 2. An inclined downward outlet pipe 6 is connected to the outer side above the outer cylinder 2, and the outlet mechanism 7 is aligned with the outlet pipe 6. A funnel 8 is fixed inside the inner cylinder 1, and a feeding pipe 9 is connected to the bottom of the funnel 8. One end of the feeding pipe 9 away from the funnel 8 is connected to the inner cylinder 1, and the inside of the feeding pipe 9 is communicated with the gap between the inner cylinder 1 and the outer cylinder 2. A hot air guiding mechanism 11 for drying is arranged between the inner cylinder 1 and the outer cylinder 2; when in use, first connect the hot air guiding mechanism 11 to an external hot air generating device, so that hot air flows downward from top to bottom between the inner cylinder 1 and the outer cylinder 2, and then convey the polyamide 66 modified particles to be dried into the inner cylinder 1. Under the action of the funnel 8 and the feeding pipe 9, the materials enter between the inner cylinder 1 and the outer cylinder 2, and enter the bottom of the spiral lifting mechanism 5 under the action of the feeding mechanism 10. Then, under the action of the spiral lifting mechanism 5, the materials spiral upward between the inner cylinder 1 and the outer cylinder 2, extending the conveying path of the materials and fully contacting with the hot air, improving the drying effect. Finally, discharging outward through the outlet mechanism 7 and the outlet pipe 6 is convenient for the operator to collect.

[0035] The spiral lifting mechanism 5 includes a number of lifting blocks 501 and a number of connecting rods 502. The number of lifting blocks 501 is an even number. The lifting blocks 501 are spirally distributed between the inner cylinder 1 and the outer cylinder 2. The inner and outer sides of the lifting blocks 501 are respectively in contact with the inner cylinder 1 and the outer cylinder 2, and adjacent two lifting blocks 501 are in contact with each other. The upper surface of the lifting block 501 is inclined. The corresponding lifting blocks 501 are fixed to each other through the connecting rods 502. A number of sliding holes are opened on the lower sealing ring 4. The lower ends of the connecting rods 502 penetrate through the corresponding sliding holes, and a driving component for lifting the connecting rods 502 is arranged at the lower ends of the connecting rods 502; under the action of the driving component, the alternating connecting rods 502 rise and fall synchronously, and the adjacent connecting rods 502 rise and fall alternately. The connecting rods 502 drive the lifting blocks 501 fixed to them to move upward, pushing the materials staying on the upper surface of the lifting blocks 501 upward. Under the action of the inclination of the upper surface of the lifting blocks 501, the materials move to another adjacent lifting block 501, and then the lifting blocks 501 move downward and reset, and then another adjacent lifting block 501 lifts upward. Repeating the above steps in a cycle, the materials can be gradually moved upward along the spiral path, and the materials will be tumbled during the movement, so that all surfaces of the materials can fully contact with the hot air extrusion, and the contact time is long, and the drying effect is good.

[0036] The driving component includes a first lifting plate 503 and a second lifting plate 504 located below the outer cylinder 2. The first lifting plate 503 is located above the second lifting plate 504. A number of notches 506 are formed at the edge of the first lifting plate 503, and a through hole 505 is formed at the middle position of the first lifting plate 503. A fixing plate 509 is fixed to the bottom of the inner cylinder 1. A first hydraulic cylinder 507 and a second hydraulic cylinder 508 are fixed below the fixing plate 509. The output end of the first hydraulic cylinder 507 is fixedly connected to the first lifting plate 503, and the output end of the second hydraulic cylinder 508 passes through the through hole 505 and is fixedly connected to the second lifting plate 504. The connecting rod 502 at the corresponding position is fixedly connected to the first lifting plate 503, and the other connecting rod 502 passes through the notch 506 and is connected to the second lifting plate 504. During use, the first hydraulic cylinder 507 and the second hydraulic cylinder 508 operate alternately. The lifting block 501 at the corresponding position is driven by the connecting rod 502 to move upward, and the material above it is moved to another adjacent lifting block 501. Repeating this cycle can achieve the effect of transporting materials.

[0037] The discharging mechanism 7 includes a transfer box 701. The transfer box 701 is inclined and arranged above the lifting block 501 close to the discharging pipe 6. An outlet 703 is formed on the side wall of the transfer box 701 close to the outer cylinder 2, and the outlet 703 is located below the discharging pipe 6. An inlet 702 is formed at the side end of the transfer box 701. A blocking plate 704 is fixed between the inner cylinder 1 and the outer cylinder 2, and the blocking plate 704 is located directly above the inlet 702. During use, when the adjacent lifting block 501 lifts the material above it upward, the material enters the transfer box 701 through the inlet 702 and accumulates at the bottom of the transfer box 701. Then the lifting block 501 below the transfer box 701 moves upward. At this time, the inlet 702 is gradually blocked by the blocking plate 704, and the hot air between the inner cylinder 1 and the outer cylinder 2 will not enter the transfer box 701. As the transfer box 701 rises, the outlet 703 is aligned with the discharging pipe 6. At this time, the material in the transfer box 701 is discharged outward through the discharging pipe 6 to complete drying. During the discharging process, the transfer box 701 can be blocked to prevent the hot air from being discharged from the discharging pipe 6 and burning the operator, which is convenient for collecting the material.

[0038] The feeding mechanism 10 includes a horizontal plate 1001 which is fixed above the lifting block 501 close to the feeding pipe 9. One end of the horizontal plate 1001 is fixed with a vertical plate 1002. The vertical plate 1002 is attached to the side end of the adjacent lifting block 501. A sealing plate 1003 is fixed below the lifting block 501. The sealing plate 1003 is attached to the inner cylinder 1 and is aligned with the feeding pipe 9. During use, the materials inside the inner cylinder 1 are filled into the gap between the vertical plate 1002, the horizontal plate 1001 and the lifting block 501 through the feeding pipe 9. When the lifting block 501 is lifted upward, it can drive the materials to move upward and finally move from below the vertical plate 1002 to the adjacent lifting block 501. Moreover, at this time, the sealing plate 1003 moves upward with the lifting block 501 and blocks the feeding pipe 9 to prevent materials from entering.

[0039] The hot air guiding mechanism 11 includes an air inlet pipe 1101 fixed on the upper sealing ring 3. A wind blocking plate 1102 is fixed between the inner cylinder 1 and the outer cylinder 2. The wind blocking plate 1102 is located directly below the air inlet pipe 1101. A number of ventilation holes 1103 evenly distributed in a circle are opened at the bottom of the inner cylinder 1. A number of connecting holes 1104 evenly distributed at equal intervals are opened on the funnel 8. A heat conducting pipe 1105 is connected to the connecting hole 1104. During use, dry hot air is introduced into the air inlet pipe 1101. Under the action of the wind blocking plate 1102, the air flow will not generate too much impact on the materials and will not hinder the movement of the materials. The introduced hot air moves downward along the spiral channel formed between the lifting blocks 501 and fully contacts the materials during the movement to dry the materials. Finally, the hot air flows into the heat conducting pipe 1105 through the ventilation holes 1103 and the connecting holes 1104 and is discharged from above the heat conducting pipe 1105. When the hot air passes through the heat conducting pipe 1105, it can preheat the materials inside the inner cylinder 1, make full use of the heat of the hot air, reduce the subsequent drying load and further improve the drying effect.

[0040] The above fixing methods are all the most commonly used fixed connection methods in the field, such as welding, bolt connection, etc.; the above electrical components, such as the first hydraulic cylinder 507 and the second hydraulic cylinder 508, are all products of the existing technology and can be directly purchased and used in the market. The specific principle will not be elaborated.

[0041] The working principle of the present invention:

[0042] In use, first, the air inlet pipe 1101 is externally connected to a hot air generating device, so that hot air flows downward from top to bottom between the inner cylinder 1 and the outer cylinder 2. Then, the polyamide 66 modified particles to be dried are conveyed into the inner cylinder 1. The materials inside the inner cylinder 1 are filled into the gaps between the vertical plate 1002, the horizontal plate 1001 and the lifting block 501 through the feed pipe 9. At this time, the first hydraulic cylinder 507 and the second hydraulic cylinder 508 operate alternately. The connecting rod 502 drives the lifting block 501 at the corresponding position to move upward. The adjacent connecting rods 502 rise and fall synchronously, and the adjacent connecting rods 502 rise and fall alternately. The connecting rod 502 drives the lifting block 501 fixed to it to move upward, pushing the materials staying on the upper surface of the lifting block 501 upward. Under the action of the inclination of the upper surface of the lifting block 501, the materials move to another adjacent lifting block 501. Then the lifting block 501 moves downward and resets, and then another adjacent lifting block 501 moves upward. By repeating the above steps, the materials can be gradually moved upward along a spiral path, and the materials will be tumbled during the movement, extending the conveying path of the materials and fully contacting with the hot air, improving the drying effect. When the adjacent lifting block 501 lifts the materials above it upward, the materials enter the transfer box 701 through the feed port 702 and gather at the bottom of the transfer box 701. Then the lifting block 501 below the transfer box 701 moves upward. At this time, the feed port 702 is gradually blocked by the blocking plate 704. At this time, the hot air between the inner cylinder 1 and the outer cylinder 2 will not enter the transfer box 701. As the transfer box 701 rises, the discharge port 703 is aligned with the discharge pipe 6. At this time, the materials in the transfer box 701 are discharged outward through the discharge pipe 6, completing the drying. During the discharging process, the transfer box 701 can be blocked to prevent the hot air from being discharged from the discharge pipe 6 and burning the operator, which is convenient for collecting the materials.

[0043] In addition, under the action of the wind blocking plate 1102, the air flow will not generate too much impact on the materials and will not hinder the movement of the materials. Moreover, the hot air flows into the heat conduction pipe 1105 through the ventilation holes 1103 and the connection holes 1104 and is discharged from above the heat conduction pipe 1105. When the hot air passes through the heat conduction pipe 1105, it can preheat the materials inside the inner cylinder 1, make full use of the heat of the hot air, reduce the subsequent drying load, and further improve the drying effect.

[0044] The above has made a detailed description of the preferred embodiments of this patent. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of this patent.

Claims

1. A drying device for polyamide 66 modified particles, comprising an inner cylinder (1) and an outer cylinder (2), characterized in that, The inner cylinder (1) is located inside the outer cylinder (2). Upper sealing rings (3) and lower sealing rings (4) are respectively fixed at both ends of the inner cylinder (1) and the outer cylinder (2). A support frame (12) is arranged on the outer side of the outer cylinder (2). A discharge mechanism (7), a feeding mechanism (10), and a spiral lifting mechanism (5) for conveying materials are arranged between the inner cylinder (1) and the outer cylinder (2). An inclined downward discharge pipe (6) is connected to the outer side above the outer cylinder (2), and the discharge mechanism (7) is aligned with the discharge pipe (6). A funnel (8) is fixed inside the inner cylinder (1), and a feeding pipe (9) is connected to the bottom of the funnel (8). One end of the feeding pipe (9) away from the funnel (8) is connected to the inner cylinder (1), and the inside of the feeding pipe (9) communicates with the gap between the inner cylinder (1) and the outer cylinder (2). A hot air guiding mechanism (11) for drying is arranged between the inner cylinder (1) and the outer cylinder (2). The spiral lifting mechanism (5) includes a number of lifting blocks (501) and a number of connecting rods (502). The number of lifting blocks (501) is an even number. The lifting blocks (501) are spirally distributed between the inner cylinder (1) and the outer cylinder (2). The inner and outer sides of the lifting blocks (501) are respectively in contact with the inner cylinder (1) and the outer cylinder (2), and adjacent two lifting blocks (501) are in contact with each other. The upper surface of the lifting blocks (501) is inclined. The corresponding lifting blocks (501) are fixed to each other by connecting rods (502). A number of sliding holes are formed in the lower sealing ring (4). The lower ends of the connecting rods (502) penetrate through the corresponding sliding holes, and a driving component for lifting the connecting rods (502) is arranged at the lower ends of the connecting rods (502). The driving component includes a first lifting plate (503) and a second lifting plate (504) located below the outer cylinder (2). The first lifting plate (503) is located above the second lifting plate (504). A number of notches (506) are formed at the edge of the first lifting plate (503), and a through hole (505) is formed at the middle position of the first lifting plate (503). A fixing plate (509) is fixed to the bottom of the inner cylinder (1). A first hydraulic cylinder (507) and a second hydraulic cylinder (508) are fixed below the fixing plate (509). The output end of the first hydraulic cylinder (507) is fixedly connected to the first lifting plate (503). The output end of the second hydraulic cylinder (508) passes through the through hole (505) and is fixedly connected to the second lifting plate (504). The corresponding connecting rods (502) are fixedly connected to the first lifting plate (503), and the other connecting rods (502) pass through the notches (506) and are connected to the second lifting plate (504). The discharge mechanism (7) includes a transfer box (701). The transfer box (701) is inclined and arranged above the lifting block (501) close to the discharge pipe (6). A discharge port (703) is formed in the side wall of the transfer box (701) close to the outer cylinder (2), and the discharge port (703) is located below the discharge pipe (6). A feed port (702) is formed at the side end of the transfer box (701). A blocking plate (704) is fixed between the inner cylinder (1) and the outer cylinder (2).The blocking plate (704) is located directly above the feed inlet (702).

2. The drying device for polyamide 66 modified particles according to claim 1, characterized in that, The feeding mechanism (10) includes a horizontal plate (1001) which is fixed above the lifting block (501) close to the feeding pipe (9). One end of the horizontal plate (1001) is fixed with a vertical plate (1002), and the vertical plate (1002) is attached to the side end of the adjacent lifting block (501). A sealing plate (1003) is fixed below the lifting block (501), and the sealing plate (1003) is attached to the inner cylinder (1) and is aligned with the feeding pipe (9).

3. The polyamide 66 modified particle drying device according to claim 2, characterized in that, The hot air guiding mechanism (11) includes an air inlet pipe (1101) fixed on the upper sealing ring (3). A wind blocking plate (1102) is fixed between the inner cylinder (1) and the outer cylinder (2), and the wind blocking plate (1102) is located directly below the air inlet pipe (1101). A number of ventilation holes (1103) evenly distributed in a circumferential manner are opened at the bottom of the inner cylinder (1). A number of connecting holes (1104) are opened on the funnel (8) at equal intervals, and a heat conducting pipe (1105) is connected to the connecting holes (1104).

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