Cooling device for a pill making machine

Abstract

The utility model discloses a cooling device of pill making machine relates to pill making machine technical field, including frame, hollow screw rod, hollow transmission shaft, drive mechanism and go out strip board, the top of frame is equipped with feed inlet and is equipped with working cavity in the inside, and feed inlet is communicated on working cavity top, and hollow screw rod rotatably is established in working cavity, and hollow transmission shaft fixed connection is established in the inner end of hollow screw rod and stretches out working cavity, and the outer end of hollow transmission shaft is connected with the water outlet swivel joint, and the water outlet swivel joint is connected with the water outlet pipe, and drive mechanism is used for driving hollow transmission shaft, and the outer end position of hollow screw rod is the discharge port of working cavity, and go out strip board and fix in discharge port, and go out strip board and establish a plurality of go out strip hole, and the outer end of hollow screw rod is connected with the water inlet swivel joint, and the water inlet swivel joint is connected with the water inlet pipe, and the water inlet pipe stretches out working cavity, and this cooling device utilizes cooling water to hollow screw rod and carries out heat dissipation processing, prevents when making strip and medicine lump agglomeration and half agglomeration go out strip hole.

Description

Technical Field

[0001] This utility model relates to the field of pelleting machine technology, and in particular to a cooling device for a pelleting machine. Background Technology

[0002] During the pelleting process, the clump of medicine enters the strip-forming device through the feed inlet. The strip-forming device extrudes the medicine into strips. The extruded strips are highly viscous. When the pelleting machine operates for a long time, the continuous heat generated by the equipment will further increase the viscosity of the strips. The conventional solution is to add a jacket to the outer wall of the strip-forming device to cool it. However, this method cannot dissipate heat from the screw of the strip-forming device. Overheating of the screw will cause the medicine to clump together during strip forming, resulting in blockage or partial blockage of the strip outlet. This leads to speed differences between the same or different strips, affecting the quality of subsequent pellet rolling and requiring the machine to be stopped to clean the clumps, resulting in material waste and reduced production efficiency. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a cooling device for a pelletizing machine to solve the problem that the pelletizing device cannot dissipate heat in time.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A cooling device for a pelletizing machine includes a frame, a hollow screw, a hollow drive shaft, a drive mechanism, and an outlet plate. The frame has a feed inlet at its top and a working chamber inside, with the feed inlet connected to the upper part of the working chamber. The hollow screw is rotatably disposed within the working chamber. The hollow drive shaft is fixedly connected to the inner end of the hollow screw and extends out of the working chamber. A water outlet rotary joint is connected to the outer end of the hollow drive shaft, and a water outlet pipe is connected to the water outlet rotary joint. The drive mechanism drives the hollow drive shaft. The outer end of the hollow screw is located at the feed outlet of the working chamber. The outlet plate is fixed to the feed outlet and has several outlet holes. A water inlet rotary joint is connected to the outer end of the hollow screw, and a water inlet pipe is connected to the water inlet rotary joint, extending out of the working chamber.

[0006] Furthermore, the strip plate is embedded in the frame, and a first through hole is provided in the middle of the strip plate. A first bushing is fixed in the first through hole, and the outer end of the hollow screw is sleeved on the first bushing.

[0007] Furthermore, it includes a pressure plate, which is disposed outside the strip output plate. A second through hole is provided in the middle of the pressure plate. The inner end of the pressure plate is fixedly sleeved on the frame. The outer periphery of the strip output plate is fixed on the pressure plate. The strip output hole protrudes from the second through hole.

[0008] Furthermore, the inner end of the pressure plate is provided with an internal thread, and the frame is provided with an external thread that mates with the internal thread.

[0009] Furthermore, the outer end of the hollow screw is provided with a locking block, the inner end of the hollow drive shaft is provided with a locking groove, the locking block is embedded in the locking groove, and a sealing gasket is provided between the locking block and the locking groove.

[0010] Furthermore, a second bushing is fixed on the frame, and the hollow transmission shaft sleeve is disposed on the second bushing.

[0011] Furthermore, a transmission wheel is fixed on the hollow transmission shaft, and the driving mechanism is used to drive the transmission wheel.

[0012] Furthermore, the outlet hole includes a feeding section and an outlet section. The diameter of the feeding section gradually decreases from the inside to the outside. The outlet section is connected to the outside of the feeding section, and the diameter of the outlet section remains unchanged and is not greater than the diameter of the feeding section.

[0013] Furthermore, the aperture of the discharge section is the same as the aperture at the end of the feed section.

[0014] Furthermore, the strip plate is a circular plate.

[0015] The beneficial effects of this utility model are:

[0016] This invention creates a cooling water channel during the pelletizing process by setting a hollow drive shaft and a hollow screw. The cooling water dissipates heat from the hollow screw, preventing the pellet from heating up in the working chamber, increasing the viscosity of the pellet, and preventing the pellet from caking and blocking or partially blocking one or more outlet holes during pellet making. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cooling device of the pellet-making machine of this utility model;

[0018] Figure 2 This is a cross-sectional view of the cooling device of the pellet-making machine of this utility model;

[0019] Figure 3 yes Figure 2 A cross-sectional exploded view;

[0020] Figure 4 This is a cross-sectional view of the strip plate in this utility model.

[0021] In the diagram: 1. Frame; 101. Main body; 102. Fixing frame; 2. Hollow screw; 3. Hollow drive shaft; 4. Strip discharge plate; 5. Feed inlet; 6. Working chamber; 7. Water outlet rotary joint; 8. Water outlet pipe; 9. Discharge port; 10. Strip discharge hole; 1001. Feed section; 1002. Discharge section; 11. Water inlet rotary joint; 12. Water inlet pipe; 13. First through hole; 14. First bushing; 15. Pressure plate; 16. Second through hole; 17. Internal thread; 18. External thread; 19. Clamping block; 20. Clamping groove; 21. Second bushing; 22. Drive wheel. Detailed Implementation

[0022] To make the technical problems, technical solutions and beneficial effects of the utility model clearer, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1-4 As shown, this utility model provides a cooling device for a pelletizing machine, including a frame 1, a hollow screw 2, a hollow drive shaft 3, a drive mechanism, and a strip outlet plate 4. The top of the frame 1 has a feed inlet 5 and a working chamber 6 inside. The feed inlet 5 is connected to the top of the working chamber 6. The hollow screw 2 is rotatably disposed in the working chamber 6. The hollow drive shaft 3 is fixedly connected to the inner end of the hollow screw 2 and extends out of the working chamber 6. The outer end of the hollow drive shaft 3 is connected to a water outlet rotary joint 7, and a water outlet pipe 8 is connected to the water outlet rotary joint 7. The drive mechanism is used to drive the hollow drive shaft 3. The outer end of the hollow screw 2 is located at the feed outlet 9 of the working chamber 6. The strip outlet plate 4 is fixed to the feed outlet 9 and has several strip outlet holes 10. The outer end of the hollow screw 2 is connected to a water inlet rotary joint 11, and a water inlet pipe 12 is connected to the water inlet rotary joint 11, extending out of the working chamber 6.

[0024] The hollow screw 2 and the hollow drive shaft 3 have hollow inner shafts, which are fixedly connected and connected to form a cooling water channel. Cooling water enters the hollow screw 2 from the inlet pipe 12, then passes through the hollow drive shaft 3, and finally flows out from the outlet pipe 8. The cooling water flows preferentially inside the hollow screw 2, which can achieve the cooling of the hollow screw 2.

[0025] The drive mechanism is fixed inside the frame 1, and the hollow drive shaft 3 is located inside the frame 1. The hollow drive shaft 3 and the drive mechanism are located outside the working chamber 6, which does not affect the conveying of the drug clump by the hollow screw 2. The drug clump is put into the working chamber 6 from the feed port 5. The drive mechanism drives the hollow drive shaft 3, which drives the hollow screw 2. The hollow screw 2 rotates continuously, and the drug clump is conveyed to the discharge port 9 as the hollow screw 2 rotates, and finally extruded from the strip outlet 10.

[0026] The strip outlet 10 is located on the strip outlet plate 4, which is located at the discharge port 9. By replacing the discharge plate, the diameter of the strip outlet 10 can be changed to accommodate the needs of different sizes of medicine strips.

[0027] The strip plate 4 is embedded in the frame 1. A first through hole 13 is provided in the middle of the strip plate 4. A first bushing 14 is fixed in the first through hole 13. The outer end of the hollow screw 2 is sleeved on the first bushing 14.

[0028] The diameter of the strip ejector plate 4 is the same as the diameter of the working chamber 6. The strip ejector plate 4 can be embedded into the side of the hollow screw 2 near the discharge port 9. At the same time, the end of the hollow screw 2 near the discharge port 9 is supported on the first bushing 14 of the strip ejector plate 4.

[0029] This utility model includes a pressure plate 15, which is located on the outside of the strip output plate 4. A second through hole 16 is provided in the middle of the pressure plate 15. The inner end of the pressure plate 15 is fixedly sleeved on the frame 1. The outer periphery of the outer end of the strip output plate 4 is fixed on the pressure plate 15. The strip output hole 10 is exposed through the second through hole 16.

[0030] The frame 1 includes a main body 101 and a fixed frame 102. The fixed frame 102 is fixed on the main body 101 and forms a feed inlet 5 and a working chamber 6. The strip plate 4 is embedded in the feed outlet 9 formed by the fixed frame 102. The pressure plate 15 is sleeved on the feed outlet 9 formed by the fixed frame 102. The pressure plate 15 is used to fix the strip plate 4. The pressure plate 15 is provided with a second through hole 16. Therefore, the pressure plate 15 only fixes the outer periphery of the strip plate 4 and will not block the strip outlet hole 10.

[0031] The inner end of the pressure plate 15 is provided with an internal thread 17, and the frame 1 is provided with an external thread 18 that mates with the internal thread 17. The external thread 18 is provided on the fixed frame 102, and the pressure plate 15 is threadedly connected to the fixed frame 102.

[0032] The hollow screw 2 has a locking block 19 at its outer end and a locking groove 20 at its inner end. The locking block 19 is embedded in the locking groove 20, and a sealing gasket is provided between the locking block 19 and the locking groove 20. The locking block 19 on the hollow screw 2 and the locking groove 20 on the hollow drive shaft 3 are interlocked, and the inner end of the hollow screw 2 is firmly fixed on the hollow drive shaft 3 and driven by the hollow drive shaft 3.

[0033] A second bushing 21 is fixed on the frame 1, and a hollow drive shaft 3 is sleeved on the second bushing 21. The second bushing 21 supports the hollow drive shaft 3, ensuring the normal rotation of the hollow drive shaft 3 and the hollow screw 2.

[0034] A transmission wheel 22 is fixed on the hollow transmission shaft 3, and a drive mechanism is used to drive the transmission wheel 22. The transmission wheel 22 can be a gear. Through the cooperation of a motor and a gear drive mechanism, the transmission wheel 22 is driven, thereby realizing the synchronous rotation of the hollow screw 2 and the hollow transmission shaft 3.

[0035] refer to Figure 4The discharge orifice 10 includes a feed section 1001 and a discharge section 1002. The diameter of the feed section 1001 gradually decreases from the inside to the outside. The discharge section 1002 is connected to the outside of the feed section 1001, and its diameter remains constant and is not larger than that of the feed section 1001. The diameter of the discharge section 1002 is the same as that of the end of the feed section 1001. By using a wide-inlet, narrow-outlet design, the clogging of the discharge orifice 10 is avoided, resulting in a more uniform distribution of the medicated strips from the discharge orifice 10.

[0036] The strip outlet plate 4 is a circular plate. The first bushing 14 is located at the center of the strip outlet plate 4, and the strip outlet hole 10 is located on the outside of the first bushing 14.

[0037] Working principle: The drug pellet is fed into the working chamber 6 through the feed port 5. The drive mechanism drives the hollow drive shaft 3 and the hollow screw 2 to rotate synchronously. The hollow screw 2 transports the drug pellet to the discharge port 9. Finally, the drug pellet is extruded from the strip outlet 10 into the working chamber 6. At the same time, cooling water enters the hollow screw 2 through the water inlet pipe 12 and the water inlet rotary joint 11. It flows in the hollow screw 2 and the hollow drive shaft 3, carrying away the heat of the hollow screw 2 and continuously reducing the temperature of the hollow screw 2. The cooling water finally flows into the water outlet pipe 8 through the water outlet rotary joint 7 and is discharged from the water outlet pipe 8. Through the cooling water channel, the cooling effect of the hollow screw 2 during production is achieved.

[0038] This invention creates a cooling water channel during the pelletizing process by setting a hollow drive shaft 3 and a hollow screw 2. The cooling water is used to dissipate heat from the hollow screw 2, preventing the medicated pellet from heating up in the working chamber 6, preventing the viscosity of the medicated pellet from increasing, and preventing the medicated pellet from caking and blocking or partially blocking one or more outlet holes 10 during pelletizing.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A cooling device for a pelletizing machine, characterized in that, The device includes a frame (1), a hollow screw (2), a hollow drive shaft (3), a drive mechanism, and an outlet plate (4). The top of the frame (1) has a feed inlet (5) and an internal working chamber (6). The feed inlet (5) is connected to the top of the working chamber (6). The hollow screw (2) is rotatably disposed in the working chamber (6). The hollow drive shaft (3) is fixedly connected to the inner end of the hollow screw (2) and extends out of the working chamber (6). The outer end of the hollow drive shaft (3) is connected to a water outlet rotary joint (7). A water outlet pipe (8) is connected to the water rotary joint (7). The driving mechanism is used to drive the hollow transmission shaft (3). The outer end of the hollow screw (2) is the outlet (9) of the working chamber (6). The strip plate (4) is fixed to the outlet (9). Several strip holes (10) are opened on the strip plate (4). The outer end of the hollow screw (2) is connected to the water inlet rotary joint (11). The water inlet pipe (12) is connected to the water inlet rotary joint (11). The water inlet pipe (12) extends out of the working chamber (6).

2. The cooling device for a pelletizing machine according to claim 1, characterized in that, The strip plate (4) is embedded in the frame (1). A first through hole (13) is provided in the middle of the strip plate (4). A first bushing (14) is fixed in the first through hole (13). The outer end of the hollow screw (2) is sleeved on the first bushing (14).

3. The cooling device for a pelletizing machine according to claim 1, characterized in that, Includes a pressure plate (15), which is located outside the strip output plate (4). A second through hole (16) is provided in the middle of the pressure plate (15). The inner end of the pressure plate (15) is fixedly sleeved on the frame (1). The outer periphery of the strip output plate (4) is fixed on the pressure plate (15). The strip output hole (10) protrudes from the second through hole (16).

4. The cooling device for a pelletizing machine according to claim 3, characterized in that, The inner end of the pressure plate (15) is provided with an internal thread (17), and the frame (1) is provided with an external thread (18) that cooperates with the internal thread (17).

5. The cooling device for a pelletizing machine according to claim 1, characterized in that, The hollow screw (2) has a locking block (19) at its outer end and a locking groove (20) at its inner end. The locking block (19) is embedded in the locking groove (20) and a sealing gasket is provided between the locking block (19) and the locking groove (20).

6. The cooling device for a pelletizing machine according to claim 1, characterized in that, A second bushing (21) is fixed on the frame (1), and the hollow drive shaft (3) is sleeved on the second bushing (21).

7. The cooling device for a pelletizing machine according to claim 1, characterized in that, A transmission wheel (22) is fixed on the hollow transmission shaft (3), and the driving mechanism is used to drive the transmission wheel (22).

8. The cooling device for a pelletizing machine according to claim 1, characterized in that, The strip outlet (10) includes a feeding section (1001) and a discharge section (1002). The diameter of the feeding section (1001) gradually decreases from the inside to the outside. The discharge section (1002) is connected to the outside of the feeding section (1001), and the diameter of the discharge section (1002) remains unchanged and is not greater than the diameter of the feeding section (1001).

9. A cooling device for a pelletizing machine according to claim 8, characterized in that, The aperture of the discharge section (1002) is the same as the aperture at the end of the feed section (1001).

10. A cooling device for a pelletizing machine according to claim 1, characterized in that, The strip plate (4) is a circular plate.

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