A new vacuum rake dryer

Abstract

The utility model relates to the harrow type drying machine field, and disclose a novel vacuum harrow type drying machine, including support base, drying cylinder, feed hopper etc.

Description

Technical Field

[0001] This utility model relates to the field of rake dryers, specifically a novel vacuum rake dryer. Background Technology

[0002] Vacuum rake dryers are a type of drying equipment widely used in the chemical, pharmaceutical, and food industries. They achieve efficient and low-temperature drying by heating and stirring materials in a vacuum environment. With industrial development, the requirements for drying processes are becoming increasingly stringent, and traditional vacuum rake dryers are gradually showing their shortcomings in terms of drying uniformity, energy consumption control, and adaptability.

[0003] Traditional vacuum rake dryers typically use a fixed angle design for their rake teeth, making it impossible to adjust the tumbling intensity according to the material characteristics. This results in high-viscosity materials easily sticking to the walls and clumping, leading to uneven drying. Secondly, the single jacket heating method has low heat transfer efficiency, long drying cycle, and high energy consumption. In addition, materials tend to accumulate in the drying drum, forming dead corners, which further exacerbates the uneven drying. Therefore, we have proposed a new type of vacuum rake dryer. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a novel vacuum rake dryer that solves the aforementioned problems.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution: a novel vacuum rake dryer, comprising a support base, a drying cylinder, and a feeding hopper. The top surface of the support base is provided with an arc groove, and the drying cylinder is fixedly installed in the arc groove. The top of the drying cylinder is fixedly installed with a feeding hopper, which is inverted conical in shape and communicates with the interior of the drying cylinder. The drying cylinder is a hollow cylindrical structure with connecting holes on both sides. A rake mechanism is fixedly installed inside the drying cylinder. The rake mechanism includes a lead screw, rake teeth, a support assembly, and a variable tilt component. The lead screw is rotatably connected inside the drying cylinder. The variable tilt component is installed on the lead screw, and the rake teeth are installed on the variable tilt component. The support assembly is also rotatably connected inside the drying cylinder. The support assembly and the variable tilt component are connected by bearings.

[0006] Preferably, the drying cylinder is fitted with a heat collecting sleeve.

[0007] Preferably, a guide groove is formed on the inner arc surface of the drying cylinder.

[0008] Preferably, motors are fixedly installed on both sides of the drying cylinder, and a lead screw is rotatably connected inside the drying cylinder, with the output shaft of one of the motors and the lead screw being coaxially and fixedly connected.

[0009] Preferably, a connecting shaft is fixedly installed on one side plane of the fixed base, and a connecting hole is opened on the other side plane of the fixed base. A bearing is coaxially fixedly installed in the connecting hole, and the lead screw is coaxially rotatably connected in the bearing. The connecting shaft and the drying cylinder are rotatably connected, and the output shaft of the other motor is coaxially and fixedly connected to the connecting shaft.

[0010] Preferably, the bracket assembly includes a fixed seat and a support rod. The support rod is circumferentially fixedly installed on the plane opposite to the connecting shaft of the fixed seat. Multiple fixed seats are equidistantly fixedly installed on the support rod, and all fixed seats are coaxially corresponding to the lead screw. A fixing block is fixedly installed circumferentially on the outer arc surface of the fixing base.

[0011] Preferably, the tilt-variable component includes a connecting block, a connecting rod, and a rotating seat. The rotating seat is rotatably connected to the fixing block on the fixing seat. The connecting block is fixedly installed on the arc surface of the rotating seat. The connecting rod is rotatably connected to the connecting block. The connecting block is fixedly installed on the other end of the connecting rod.

[0012] Preferably, the tilt-variable component further includes a sliding seat and a second connecting rod. The sliding seat is cross-shaped, and a threaded hole is provided on the plane of the sliding seat. A rotating block is fixedly installed on the outer wall of the sliding seat in a circular shape. The sliding seat and the lead screw are threadedly connected. The second connecting rod is rotatably connected to the rotating block on the sliding seat, and the other end of the second connecting rod is fixedly connected to the connecting block.

[0013] Preferably, rake teeth are coaxially fixedly connected to the plane of the rotating seat.

[0014] Compared with the prior art, this utility model provides a novel vacuum rake dryer, which has the following beneficial effects: 1. This new type of vacuum rake dryer can adjust the rake tooth inclination angle through a screw-driven variable inclination component, so that the material can automatically turn over according to the change of resistance during the drying process, effectively solving the problems of uneven drying, clumping or sticking to the wall caused by the fixed rake teeth in traditional equipment.

[0015] 2. This new type of vacuum rake dryer has a heat collection jacket attached to the outer side of the drying cylinder, which can effectively collect and utilize heat, enhance the heating effect on the material, and improve the drying efficiency. Compared with traditional dryers, it can complete the drying of materials in a shorter time.

[0016] 3. This new type of vacuum rake dryer has a guide groove on the inner arc surface of the drying cylinder. In conjunction with the rake tooth mechanism, it can guide the material to form a specific flow path in the drying cylinder, reduce material accumulation and dead corners, and make the material dry more uniformly, thus improving the problem of uneven drying of materials in traditional dryers. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the rake tooth mechanism of this utility model.

[0018] In the diagram: 1. Support base; 2. Heat collecting jacket; 3. Drying cylinder; 4. Motor; 5. Feed hopper; 6. Guide channel; 7. Lead screw; 8. Bearing; 9. Fixed seat; 10. Rake teeth; 11. Sliding seat; 12. Connecting block; 13. Connecting rod one; 14. Rotating seat; 15. Connecting shaft; 16. Support rod; 17. Connecting rod two. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-3 A novel vacuum rake dryer includes a support base 1, a drying cylinder 3, and a feed hopper 5. The top surface of the support base 1 is provided with an arc groove, and the drying cylinder 3 is fixedly installed in the arc groove. The top of the drying cylinder 3 is fixedly installed with a feed hopper 5, which is inverted conical and communicates with the interior of the drying cylinder 3. The drying cylinder 3 is a hollow cylindrical structure with connecting holes on both sides. A rake mechanism is fixedly installed inside the drying cylinder 3. The rake mechanism includes a lead screw 7, rake teeth 10, a support assembly, and a tilt-variable assembly. The lead screw 7 is rotatably connected inside the drying cylinder 3. The tilt-variable assembly is installed on the lead screw 7. The rake teeth 10 are installed on the tilt-variable assembly. The support assembly is also rotatably connected inside the drying cylinder 3. The support assembly and the tilt-variable assembly are connected by bearings.

[0021] Furthermore, a heat collecting jacket 2 is fitted over the drying cylinder 3, forming a sealed heating chamber that can be circulated with heat media such as steam and heat transfer oil. Compared with traditional single-jacket heating, the annular structure of the heat collecting jacket 2 can reduce heat loss. During operation, the heat medium circulates, making the temperature distribution on the wall of the drying cylinder 3 more uniform and avoiding local overheating that could lead to material denaturation.

[0022] Furthermore, a guide groove 6 is provided on the inner arc surface of the drying cylinder 3.

[0023] Furthermore, motors 4 are fixedly installed on both sides of the drying cylinder 3, and lead screws 7 are rotatably connected inside the drying cylinder 3. The output shaft of one of the motors 4 is coaxially and fixedly connected to the lead screw 7.

[0024] Furthermore, a connecting shaft 15 is fixedly installed on one side plane of the fixed base 9, and a connecting hole is opened on the other side plane of the fixed base 9. A bearing 8 is coaxially fixedly installed in the connecting hole, and a lead screw 7 is coaxially rotatably connected in the bearing 8. The connecting shaft 15 is rotatably connected to the drying cylinder 3. The output shaft of another motor 4 is coaxially and fixedly connected to the connecting shaft 15. The sealing structure at the rotatable connection between the connecting shaft 15 and the drying cylinder 3 maintains the vacuum environment inside the drying cylinder 3 and prevents material dust from entering the bearing 8.

[0025] Furthermore, the support assembly includes a fixed seat 9 and a support rod 16. The support rod 16 is circumferentially fixed on the plane of the fixed seat 9 away from the connecting shaft 15. Multiple fixed seats 9 are fixedly fixed at equal intervals on the support rod 16, and the fixed seats 9 are all coaxially corresponding to the lead screw 7. The support rod 16 fixes multiple fixed seats 9 at equal intervals to form a stable support structure, ensuring the coaxiality and structural stability of the rake tooth mechanism, so that the rake teeth 10 are evenly distributed in the drying cylinder 3, and ensuring the stability of the stirring and tilt angle adjustment actions. A fixing block is fixedly installed circumferentially on the outer arc surface of the fixing base 9.

[0026] Furthermore, the tilt-variable component includes a connecting block 12, a connecting rod 13, and a rotating seat 14. The rotating seat 14 is rotatably connected to the fixing block on the fixing seat 9. The connecting block is fixedly installed on the arc surface of the rotating seat 14. The connecting rod 13 is rotatably connected to the connecting block. The connecting block 12 is fixedly installed on the other end of the connecting rod 13.

[0027] Furthermore, the tilt-variable component also includes a sliding seat 11 and a connecting rod 17. The sliding seat 11 is cross-shaped, and a threaded hole is provided on the plane of the sliding seat 11. A rotating block is fixedly installed on the outer wall of the sliding seat 11 in a circular shape. The sliding seat 11 and the lead screw 7 are threadedly connected. The connecting rod 17 is rotatably connected to the rotating block on the sliding seat 11. The other end of the connecting rod 17 is fixedly connected to the connecting block 12.

[0028] Furthermore, rake teeth 10 are coaxially fixedly connected to the plane of the rotating seat 14. The rake teeth 10 change their inclination angle as the rotating seat 14 rotates, directly contacting and stirring the material. The stirring intensity is adjusted according to the state of the material to prevent the material from sticking to the wall and clumping, ensuring uniform drying.

[0029] Structural Description: Support base 1: Support base 1 is the basic support structure of the dryer. The top surface is provided with an arc groove to fix the drying cylinder 3, ensuring the overall stability of the equipment and providing a reliable support foundation for the operation of the dryer. Heat collecting jacket 2: Heat collecting jacket 2 is fitted onto the outside of drying cylinder 3. It is a structure for heat collection and utilization, which can effectively concentrate heating energy, enhance the heating effect on the material inside drying cylinder 3, and improve drying efficiency. Drying cylinder 3: Drying cylinder 3 is a hollow cylindrical structure with connecting holes on both sides. It is the core cavity for material drying. The top is connected to the inverted conical feed hopper 5. A rake tooth mechanism is installed inside to realize material drying. Motor 4: A motor 4 is installed on each of the two sides of the drying cylinder 3 to drive the drying cylinder 3 and the lead screw 7 to rotate. The output shaft of one motor 4 is coaxially fixed with the connecting shaft 15, and the other motor 4 drives the lead screw to provide power for the operation of the equipment. Feed hopper 5: Feed hopper 5 is inverted cone shape, fixed to the top of drying cylinder 3 and communicating with the interior. It is used to feed materials into drying cylinder 3. The inverted cone design facilitates the smooth entry of materials into drying cylinder 3 and avoids accumulation. Guide channel 6: A guide channel 6 is opened on the inner arc surface of the drying cylinder 3. It works in conjunction with the rake tooth mechanism to guide the material to form a specific flow path in the drying cylinder 3, reduce accumulation and dead corners, and improve drying uniformity. Lead screw 7: The lead screw 7 is installed inside the drying cylinder 3 and is rotatably connected to the fixed seat 9 through the bearing 8. Its surface is threaded with the sliding seat 11. When it rotates, it drives the sliding seat 11 to move, thereby adjusting the rake tooth tilt angle. It is the transmission component of the tilt angle variable assembly. Bearing 8: Bearing 8 is coaxially installed in the connecting hole of the fixed seat 9 and sleeved on the outside of the lead screw 7 to reduce the frictional resistance when the lead screw rotates, ensure smooth rotation of the lead screw, and improve the stability of equipment operation; Fixed seat 9: Fixed seat 9 is fixed at equal intervals by support rod 16. Fixed block is provided on the outer arc surface for mounting rotating seat 14. The inner side is connected to lead screw 7 through bearing 8. It is the basic component supporting rake tooth mechanism. Rake teeth 10: Rake teeth 10 are coaxially fixed on the rotating base 14. They are the components that directly contact and stir the materials. The angle can be adjusted by the tilt angle variable component to achieve the turning and stirring of the materials and ensure the drying effect. Sliding seat 11: The sliding seat 11 is cross-shaped and threadedly connected to the lead screw 7. The outer wall rotating block is connected to the connecting block 12 through the connecting rod 17. When the lead screw 7 rotates, it drives the sliding seat 11 to move axially, thereby adjusting the rake tooth inclination angle. Connecting block 12: Connecting block 12 is rotatably connected to connecting rod 13 and connecting rod 2 17 respectively. It is the connecting part that transmits motion in the tilt angle variable assembly, ensuring the linkage between the components and realizing the tilt angle adjustment of the rake tooth 10. Connecting rod 13: The two ends of connecting rod 13 are rotatably connected to rotating seat 14 and connecting block 12 respectively. Driven by sliding seat 11, it drives rotating seat 14 to rotate through linkage mechanism, thereby realizing the change of rake tooth 10 inclination angle. Rotating seat 14: Rotating seat 14 is rotatably connected to the fixed block of fixed seat 9. The rake teeth 10 are fixed coaxially in the plane. Through the linkage of connecting rod 13 and connecting rod 2 17, the rake teeth 10 are driven to rotate around the fixed block to adjust the tilt angle. Connecting shaft 15: The connecting shaft 15 is fixed on one side of the fixed base 9 and rotatably connected to the drying cylinder 3. The other end is coaxially fixed to the output shaft of the motor 4, transmitting the power of the motor 4 and driving the fixed base 9 to rotate, thereby driving the rake teeth 10 to rotate. Support rod 16: The support rod 16 is circumferentially fixed to the plane of the fixed seat 9 away from the connecting shaft 15, and is used to fix multiple fixed seats 9 at equal intervals to form a support assembly, ensuring the coaxiality and structural stability of the rake tooth mechanism; Connecting rod 2 17: One end of connecting rod 2 17 is rotatably connected to the rotating block of sliding seat 11, and the other end is fixed to connecting block 12, converting the axial movement of sliding seat 11 into the swing of connecting rod 1 13, thereby realizing the adjustment of the tilt angle of rake teeth 10.

[0030] Working principle: During operation, the material enters the drying cylinder 3 from the inverted conical feed hopper 5. The motors 4 on both sides of the drying cylinder 3 start synchronously. One motor 4 drives the lead screw 7 to rotate, and the other motor 4 drives the bracket assembly consisting of the fixed seat 9 and the support rod 16 to rotate through the connecting shaft 15, so that the rake teeth 10 start to stir the material. When the lead screw 7 rotates, the sliding seat 11 connected to it moves along the axial direction of the lead screw 7. The rotating block on the sliding seat 11 pushes the connecting block 12 through the connecting rod 17. The connecting block 12 then drives the rotating seat 14 to rotate around the fixed block on the fixed seat 9 through the connecting rod 13, thereby realizing the dynamic adjustment of the tilt angle of the rake teeth 10. When the material resistance changes, the movement of the sliding seat 11 will change the turning angle of the rake teeth 10 accordingly, avoiding the high viscosity material from sticking to the wall and clumping.

[0031] Meanwhile, the heat collection jacket 2 attached to the outer side of the drying cylinder 3 heats the drying cylinder 3, and the heat is evenly transferred to the material inside the cylinder, improving the drying efficiency. The guide groove 6 on the inner arc surface of the drying cylinder 3 works in conjunction with the stirring action of the rake teeth 10 to guide the material to flow along a specific path and reduce dead corners of accumulation. The lead screw 7 is connected to the fixed seat 9 through the bearing 8 to ensure smooth rotation. The fixed seat 9 is fixed at equal intervals by the support rod 16 to ensure the stability of the rake tooth mechanism.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel vacuum rake dryer, characterized in that, include: Support base (1), drying cylinder (3), feeding hopper (5). The top surface of the support base (1) is provided with an arc groove, and the drying cylinder (3) is fixedly installed in the arc groove. The top of the drying cylinder (3) is fixedly installed with a feeding hopper (5). The feeding hopper (5) is inverted cone shape and communicates with the interior of the drying cylinder (3). The drying cylinder (3) is a hollow cylindrical structure with connecting holes on both sides of the plane; The drying cylinder (3) is fixedly equipped with a rake tooth mechanism, which includes a lead screw (7), rake teeth (10), a support assembly and a tilt angle variable assembly. The lead screw (7) is rotatably connected inside the drying cylinder (3), and a tilt angle variable assembly is provided on the lead screw (7). Rake teeth (10) are installed on the tilt angle variable assembly. The support assembly is also rotatably connected inside the drying cylinder (3). The support assembly and the tilt angle variable assembly are connected by a bearing.

2. The novel vacuum rake dryer according to claim 1, characterized in that, The drying cylinder (3) is covered with a heat collecting sleeve (2).

3. A novel vacuum rake dryer according to claim 1, characterized in that, The drying cylinder (3) has a guide groove (6) on its inner arc surface.

4. A novel vacuum rake dryer according to claim 1, characterized in that, Motors (4) are fixedly installed on both sides of the drying cylinder (3), and lead screws (7) are rotatably connected inside the drying cylinder (3). The output shaft of one of the motors (4) and the lead screw (7) are coaxially fixedly connected.

5. A novel vacuum rake dryer according to claim 4, characterized in that, A connecting shaft (15) is fixedly installed on one side plane of the fixed seat (9), and a connecting hole is opened on the other side plane of the fixed seat (9). A bearing (8) is coaxially fixedly installed in the connecting hole, and the lead screw (7) is coaxially rotatably connected in the bearing (8). The connecting shaft (15) and the drying cylinder (3) are rotatably connected, and the output shaft on another motor (4) is coaxially and fixedly connected to the connecting shaft (15).

6. A novel vacuum rake dryer according to claim 5, characterized in that, The bracket assembly includes a fixed seat (9) and a support rod (16). The fixed seat (9) is circumferentially fixedly mounted on a plane away from the connecting shaft (15) and a plurality of fixed seats (9) are fixedly mounted on the support rod (16) at equal intervals. All fixed seats (9) are coaxially corresponding to the lead screw (7). The fixing block is fixedly installed on the outer arc surface of the fixing seat (9) in a circular manner.

7. A novel vacuum rake dryer according to claim 6, characterized in that, The tilt-variable component includes a connecting block (12), a connecting rod (13), and a rotating seat (14). The rotating seat (14) is rotatably connected to the fixed block on the fixed seat (9). The connecting block is fixedly installed on the arc surface of the rotating seat (14). The connecting rod (13) is rotatably connected to the connecting block. The connecting block (12) is fixedly installed on the other end of the connecting rod (13).

8. A novel vacuum rake dryer according to claim 7, characterized in that, The tilt-variable component also includes a sliding seat (11) and a connecting rod (17). The sliding seat (11) is cross-shaped and has a threaded hole on its plane. A rotating block is fixedly installed on the outer wall of the sliding seat (11) in a circular shape. The sliding seat (11) and the lead screw (7) are threadedly connected. The connecting rod (17) is rotatably connected to the rotating block on the sliding seat (11). The other end of the connecting rod (17) is fixedly connected to the connecting block (12).

9. A novel vacuum rake dryer according to claim 7, characterized in that, The rotating seat (14) is coaxially fixedly connected to the rake teeth (10) on its plane.

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