Cooling device for double-screw extruder

Abstract

The utility model discloses a cooling device for a twin-screw extruder, which relates to the field of cooling of twin-screw extruders and comprises a support plate, connecting rods are fixedly mounted on two sides of the support plate, sliding rods are fixedly mounted at the upper ends of the two connecting rods, an air cylinder is fixedly mounted at the upper end of the support plate, and the air cylinder is fixedly mounted at the lower end of the support plate. A fixing plate is fixedly mounted on an output shaft of the air cylinder, a double-shaft motor is fixedly mounted in the center of the upper end of the fixing plate, threaded rods are fixedly mounted on output shafts of the double-shaft motor, sliding blocks are in threaded connection with outer rings of the two threaded rods, and a refrigeration plate is fixedly mounted at the upper ends of the sliding blocks; connecting blocks are integrally formed on the two sides of the fixing plate correspondingly, and sliding rods are slidably connected into the connecting blocks. By the adoption of the structure, the attaching effect of the refrigeration plate and shells of different heights can be effectively improved, and the using effect of the refrigeration plate is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the field of cooling of twin-screw extruders, and particularly relates to a cooling device for twin-screw extruders. Background Technique

[0002] The twin-screw extruder is developed on the basis of the single-screw extruder. Due to its good feeding performance, mixing and plasticizing performance, exhaust performance, extrusion stability and other characteristics, it has been widely used in the forming and processing of extruded products at present. The twin-screw extruder is composed of a transmission device, a feeding device, a barrel and a screw, etc. The functions of each component are similar to those of the single-screw extruder. During the use process, the shell of the machine will generate heat, so a cooling device is needed to cool the shell.

[0003] Some cooling devices for twin-screw extruders have been specially developed in the prior art. For example, the Chinese patent with the publication number of "CN215825926U" discloses "a cooling device for a twin-screw extruder". By setting a moving plate, a double-shaft motor, a lead screw, a sliding rod and a refrigeration plate, during use, the two refrigeration plates are closely attached to the surface of the shell. The inside of the refrigeration plate is provided with a heat dissipation grid plate, a semiconductor refrigeration sheet and a fan, which can quickly cool the surface of the shell. After use, the refrigeration plate can be disassembled from the top of the sliding rod, which will not affect the maintenance and other operations of the twin-screw extruder body, and is more convenient and effective to use.

[0004] Although the surface of the shell can be quickly cooled through the semiconductor refrigeration sheet and the fan, playing an effective cooling role, and the refrigeration plate can be disassembled from the top of the sliding rod, which will not affect the maintenance and other operations of the twin-screw extruder body and is more convenient and effective to use, but during use, the refrigeration plate cannot play an effective lifting role. For some higher shells, the refrigeration plate cannot effectively fit the two sides of the shell, which will lead to the lack of practicality of the refrigeration plate and can only be used for shells with a fixed height of the fixed refrigeration plate, thereby reducing the multi-directional use effect of the refrigeration plate and not effectively solving the problem of the lifting of the refrigeration plate. Summary of the Utility Model

[0005] Aiming at the problems mentioned in the background technique, the purpose of the present utility model is to provide a cooling device for a twin-screw extruder to solve the problem of cooling of the twin-screw extruder.

[0006] The above technical purpose of the present utility model is achieved through the following technical solutions:

[0007] Cooling device for twin-screw extruder, including a support plate, both sides of the support plate are fixedly installed with connecting rods, the upper ends of the two connecting rods are fixedly installed with sliding rods, the upper end of the support plate is fixedly installed with a cylinder, the output shaft of the cylinder is fixedly installed with a fixing plate, the center position of the upper end of the fixing plate is fixedly installed with a double-shaft motor, the output shafts of the double-shaft motor are both fixedly installed with threaded rods, the outer circles of the two threaded rods are threadedly connected with sliding blocks, the upper ends of the sliding blocks are fixedly installed with refrigeration plates, both sides of the fixing plate are integrally formed with connecting blocks, and the inner part of the connecting block is slidably connected with a sliding rod.

[0008] As a preferred technical solution, the inner sides of the two support plates are attached to a housing, the upper end of the housing is fixedly installed with a feeding port, and the four corners of the bottom of the housing are all fixedly installed with support legs.

[0009] As a preferred technical solution, a rectangular groove is opened in the fixing plate, the bottoms of the two sliding blocks are fixedly installed with limiting blocks, and the limiting blocks are slidably installed inside the rectangular groove.

[0010] As a preferred technical solution, a threaded hole is opened in the sliding block, the threaded rod is threadedly connected with the sliding block through the threaded hole, and support rods are fixedly installed on both sides of the two sliding blocks, and the ends of the support rods far away from the sliding blocks are fixedly installed at the bottom of the refrigeration plate.

[0011] As a preferred technical solution, fans are fixedly installed at the ends of the two refrigeration plates away from the housing, and semiconductor refrigeration chips are fixedly installed inside the ends of the refrigeration plates close to the housing.

[0012] As a preferred technical solution, an installation groove is opened in the refrigeration plate, a plurality of heat dissipation grids are fixedly installed inside the installation groove, and a plurality of heat dissipation openings are opened at the upper and lower ends and the left and right sides of the refrigeration plate.

[0013] As a preferred technical solution, two universal wheels are fixedly installed at the bottoms of the two connecting rods, and baffles are provided at one ends of the threaded rod and the sliding rod.

[0014] As a preferred technical solution, a connection port is opened in the connecting block, and the inner part of the connection port is slidably connected to the outer circle of the sliding rod.

[0015] In summary, the present utility model mainly has the following beneficial effects:

[0016] First, when in use, the support plate can be moved to the bottom of the housing first, and then the cylinder is activated to push the fixed plate. The refrigeration plate slidably installed inside the fixed plate will move upward, and then the refrigeration plate can be adjusted to the same height as the housing, which can effectively improve the fitting effect of the refrigeration plate with the housing at different heights and effectively improve the use effect of the refrigeration plate. Since the upper ends of the connecting plates fixedly installed on both sides of the support plate are fixedly installed with sliding rods, and the sliding rods are slidably connected to both sides of the fixed plate, the stability effect will be improved when the fixed plate moves up and down, preventing the fixed plate from shifting and causing the refrigeration plate to not fit effectively with both sides of the housing. Then, the biaxial motor is controlled to rotate the threaded rod fixedly installed on the output shaft of the biaxial motor. A sliding block is threadedly connected to the outer circles of the two threaded rods. Under the rotation of the biaxial motor, the refrigeration plate can be effectively adjusted to fit with both sides of the housing. When the refrigeration plate fits with both sides of the housing, the housing can be effectively cooled;

[0017] Second, a fan is fixedly installed at one end of the refrigeration plate, and a semiconductor refrigeration sheet is fixedly installed inside the end of the refrigeration plate away from the fan. A heat dissipation grid is installed inside the refrigeration plate. Under the use of the semiconductor refrigeration sheet, the housing can be quickly cooled, achieving an effective cooling effect. The heat dissipation grid and the fan can disperse the heat generated by the semiconductor refrigeration sheet, so that the use effect of the semiconductor refrigeration sheet can be maintained and the cooling effect of the semiconductor refrigeration sheet can be improved. Since heat dissipation openings are provided at the upper and lower ends and the left and right sides of the refrigeration plate, it can effectively assist the heat dissipation grid and the fan in dissipating heat from the semiconductor. Support rods are fixedly installed on both sides of the sliding block, and the ends of the support rods away from the sliding block are fixedly installed at the bottom of the refrigeration plate. When the sliding block drives the refrigeration plate to move, the support rods can effectively support the refrigeration plate and prevent it from shifting during movement. Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the connection between the sliding rod and the connection port of the present utility model;

[0020] Figure 3 is a schematic structural diagram of the biaxial motor of the present utility model;

[0021] Figure 4 is a schematic internal sectional view of the refrigeration plate of the present utility model.

[0022] Reference numerals: 1, feeding port; 2, supporting leg; 3, housing; 4, refrigeration plate; 5, heat dissipation port; 6, baffle; 7, support rod; 8, sliding block; 9, fixing plate; 10, threaded rod; 11, cylinder; 12, support plate; 13, sliding rod; 14, connecting rod; 15, universal wheel; 16, connecting block; 17, fan; 18, semiconductor refrigeration chip; 19, rectangular groove; 20, threaded hole; 21, connection port; 22, heat dissipation grid; 23, dual-shaft motor; 24, installation groove; 25, limiting block. Detailed implementation manners

[0023] Embodiment

[0024] Reference Figures 1 to 3 , the cooling device for a twin-screw extruder in this embodiment includes a support plate 12. Connecting rods 14 are fixedly installed on both sides of the support plate 12. A sliding rod 13 is fixedly installed at the upper ends of the two connecting rods 14. A cylinder 11 is fixedly installed at the upper end of the support plate 12. A fixing plate 9 is fixedly installed on the output shaft of the cylinder 11. A dual-shaft motor 23 is fixedly installed at the center position of the upper end of the fixing plate 9. Threaded rods 10 are fixedly installed on the output shafts of the dual-shaft motor 23. A sliding block 8 is threadedly connected to the outer circles of the two threaded rods 10. A refrigeration plate 4 is fixedly installed at the upper end of the sliding block 8. Connecting blocks 16 are integrally formed on both sides of the fixing plate 9. The sliding rod 13 is slidably connected inside the connecting block 16.

[0025] Reference Figures 1 to 2 , the inner sides of the two support plates 12 are attached to a housing 3. A feeding port 1 is fixedly installed at the upper end of the housing 3. Supporting legs 2 are fixedly installed at the four corners of the bottom of the housing 3. A rectangular groove 19 is opened inside the fixing plate 9. Limiting blocks 25 are fixedly installed at the bottoms of the two sliding blocks 8. The limiting blocks 25 are slidably installed inside the rectangular groove 19. The limiting blocks 25 can effectively prevent the sliding block 8 from shifting when moving, improving the stability of the sliding block 8 when moving. Threaded holes 20 are opened inside the sliding block 8. The threaded rod 10 is threadedly connected to the sliding block 8 through the threaded hole 20. Support rods 7 are fixedly installed on both sides of the two sliding blocks 8. One end of the support rod 7 away from the sliding block 8 is fixedly installed at the bottom of the refrigeration plate 4. When the dual-shaft motor 23 rotates, the threaded rod 10 will be driven, and then the sliding plate threadedly connected to the outer circle of the threaded rod 10 will fit against both sides of the housing 3. When in contact with the housing 3, the refrigeration plate 4 can effectively dissipate heat and cool both sides of the housing 3. When the sliding block 8 drives the refrigeration plate 4 to move, the support rod 7 can effectively support the refrigeration plate 4, preventing the refrigeration plate 4 from shifting when moving.

[0026] Reference Figures 2 to 3, at one end of the two refrigeration plates 4 away from the housing 3, a fan 17 is fixedly installed. Inside one end of each refrigeration plate 4 close to the housing 3, a semiconductor refrigeration chip 18 is fixedly installed. An installation groove 24 is formed inside the refrigeration plate 4, and a plurality of heat dissipation grids 22 are fixedly installed inside the installation groove 24. A plurality of heat dissipation openings 5 are formed at the upper and lower ends and the left and right sides of the refrigeration plate 4. Under the action of the semiconductor refrigeration chip 18, the housing 3 can be quickly cooled down, achieving an effective cooling effect. The heat dissipation grids 22 and the fan 17 can disperse the heat generated by the semiconductor refrigeration chip 18, so that the use effect of the semiconductor refrigeration chip 18 can be maintained and the cooling effect of the semiconductor refrigeration chip 18 can be improved. Since the heat dissipation openings 5 are formed at the upper and lower ends and the left and right sides of the refrigeration plate 4, they can effectively assist the heat dissipation grids 22 and the fan 17 in dissipating heat from the semiconductor.

[0027] Reference Figures 2 to 4 , at the bottom of each of the two connecting rods 14, two universal wheels 15 are fixedly installed. At one end of the threaded rod 10 and the sliding rod 13, a baffle 6 is provided. A connection port 21 is formed inside the connection block 16, and the inner part of the connection port 21 is slidably connected to the outer circle of the sliding rod 13. The refrigeration plate 4 can be moved to both sides of the housing 3 through the movement of the universal wheels 15, and then it plays a role in cooling the housing 3. The baffle 6 can prevent the fixing plate 9 from falling off due to being too high, and can also prevent the sliding plate from falling off. The sliding rod 13 can effectively limit the fixing plate 9.

[0028] Principle of use and advantages: When in use, the support plate 12 can be first moved to the bottom of the housing 3, and then the cylinder 11 is started to push the fixed plate 9. The refrigeration plate 4 slidably installed inside the fixed plate 9 will move upward, and then the refrigeration plate 4 can be adjusted to the same height as the housing 3, which can effectively improve the effect of the refrigeration plate 4 fitting with the housing 3 at different heights and effectively improve the use effect of the refrigeration plate 4. Since the upper ends of the connecting plates fixedly installed on both sides of the support plate 12 are fixedly installed with sliding rods 13, and the sliding rods 13 are slidably connected to both sides of the fixed plate 9, the stability effect will be improved when the fixed plate 9 moves up and down, preventing the fixed plate 9 from shifting and causing the refrigeration plate 4 not to fit effectively with both sides of the housing 3. Then, the biaxial motor 23 is controlled to rotate the threaded rod 10 fixedly installed on the output shaft of the biaxial motor 23. The outer rings of the two threaded rods 10 are threadedly connected with sliding blocks 8. Under the rotation of the biaxial motor 23, the refrigeration plate 4 can be effectively adjusted to fit with both sides of the housing 3. When the refrigeration plate 4 fits with both sides of the housing 3, the housing 3 can be effectively cooled. A fan 17 is fixedly installed at one end of the refrigeration plate 4, and a semiconductor refrigeration chip 18 is fixedly installed inside the refrigeration plate 4 at the end far from the fan 17. A heat dissipation grid 22 is installed inside the refrigeration plate 4. Under the use of the semiconductor refrigeration chip 18, the housing 3 can be quickly cooled, achieving an effective cooling effect. The heat dissipation grid 22 and the fan 17 can disperse the heat generated by the semiconductor refrigeration chip 18, so that the use effect of the semiconductor refrigeration chip 18 can be maintained and the cooling effect of the semiconductor refrigeration chip 18 can be improved. Since heat dissipation openings 5 are provided at the upper and lower ends and the left and right sides of the refrigeration plate 4, it can effectively assist the heat dissipation grid 22 and the fan 17 in dissipating heat from the semiconductor. Support rods 7 are fixedly installed on both sides of the sliding block 8, and the ends of the support rods 7 far from the sliding block 8 are fixedly installed at the bottom of the refrigeration plate 4. When the sliding block 8 drives the refrigeration plate 4 to move, the support rods 7 can effectively support the refrigeration plate 4 and prevent it from shifting during movement.

Claims

1. Cooling device for twin-screw extruder, including a support plate (12), characterized in that: Both sides of the support plate (12) are fixedly installed with connecting rods (14). The upper ends of the two connecting rods (14) are fixedly installed with a sliding rod (13). The upper end of the support plate (12) is fixedly installed with a cylinder (11). The output shaft of the cylinder (11) is fixedly installed with a fixing plate (9). The center position of the upper end of the fixing plate (9) is fixedly installed with a double-shaft motor (23). The output shafts of the double-shaft motor (23) are both fixedly installed with threaded rods (10). The outer circles of the two threaded rods (10) are threadedly connected with sliding blocks (8). The upper ends of the sliding blocks (8) are fixedly installed with a refrigeration plate (4). Both sides of the fixing plate (9) are integrally formed with connecting blocks (16). The inside of the connecting block (16) is slidably connected with the sliding rod (13).

2. The cooling device for a twin-screw extruder according to claim 1, characterized in that: The inner sides of the two support plates (12) are attached to a housing (3). The upper end of the housing (3) is fixedly installed with a feeding port (1). Four corners of the bottom of the housing (3) are all fixedly installed with support legs (2).

3. The cooling device for a twin-screw extruder according to claim 1, wherein: A rectangular groove (19) is formed inside the fixing plate (9). The bottoms of the two sliding blocks (8) are fixedly installed with limiting blocks (25). The limiting blocks (25) are slidably installed inside the rectangular groove (19).

4. The cooling device for a twin-screw extruder according to claim 1, wherein: Threaded holes (20) are formed inside the sliding blocks (8). The threaded rods (10) are threadedly connected with the sliding blocks (8) through the threaded holes (20). Both sides of the two sliding blocks (8) are fixedly installed with support rods (7). The ends of the support rods (7) far away from the sliding blocks (8) are fixedly installed at the bottom of the refrigeration plate (4).

5. The cooling device for a twin-screw extruder according to claim 1, characterized in that: Fans (17) are fixedly installed at the ends of the two refrigeration plates (4) far away from the housing (3). Inside the ends of the refrigeration plates (4) close to the housing (3), semiconductor refrigeration chips (18) are fixedly installed.

6. The cooling device for a twin-screw extruder according to claim 1, characterized in that: Installation grooves (24) are formed inside the refrigeration plates (4) as described above. A plurality of heat dissipation grids (22) are fixedly installed inside the installation grooves (24). A plurality of heat dissipation openings (5) are formed at the upper and lower ends and the left and right sides of the refrigeration plates (4).

7. The cooling device for a twin-screw extruder according to claim 1, characterized in that: Two universal wheels (15) are fixedly installed at the bottoms of the two connecting rods (14). Baffles (6) are provided at one ends of the threaded rods (10) and the sliding rod (13).

8. The cooling device for a twin-screw extruder according to claim 1, characterized in that: Connection ports (21) are formed inside the connecting blocks (16). The outer circles of the sliding rods (13) are slidably connected inside the connection ports (21).

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