Capsule centrifugal oil removal device

Abstract

This invention discloses a capsule centrifugal oil removal device. A rotating drum assembly is mounted on a frame, and a centrifugal assembly is located on the feed side of the rotating drum assembly, with a pellet inlet pipe inserted into the centrifugal assembly. The centrifugal assembly includes a centrifugal hub driven by a centrifugal motor. A conical section is provided on the centrifugal hub, with its diameter gradually increasing from the feed end to the discharge end. Several sieve holes are staggered along the conical section. This invention adds a centrifugal assembly before the rotating drum assembly, centrifuging and separating most of the oil within the centrifugal assembly before feeding the pellets back into the rotating drum assembly for further separation of the remaining oil. This results in more thorough oil removal, better oil removal effect, less residual oil on the pellets, significantly improved drying speed, shorter drying time, better drying effect, and higher production efficiency.

Description

Technical Field

[0001] This invention relates to the field of equipment technology, and in particular to a capsule centrifugal degreasing device for degreasing droplets. Background Technology

[0002] Droplets are a form of solid dispersion. They are made by heating and melting a solid or liquid drug with a matrix to form a solution, suspension, or emulsion, and then dripping the mixture into an immiscible condensate. The production process of droplets mainly includes droplet preparation, degreasing, drying, and packaging. Degreasing is usually carried out using centrifugal equipment.

[0003] Patent application CN1357412A discloses a degreasing centrifuge for traditional Chinese medicine droplets. A cylindrical centrifuge drum is placed horizontally inside a cylindrical outer barrel on the frame. The outer barrel has inlet and outlet ports on its cylindrical surface. The centrifuge drum has a side-opening door on its cylindrical surface. The cylindrical surface of the centrifuge drum and the movable door cover are covered with sieve holes. The centrifuge drum shaft is driven by an electric motor. When the motor starts, it drives the centrifuge drum to rotate. Under centrifugal force, the droplet and oil mixture adheres tightly to the drum wall, while the oil is ejected from the sieve holes on the outer surface of the centrifuge drum, achieving the degreasing requirement. The oil is collected in the outer drum and sent back to the oil collection tank via a conduit for later use. This degreasing centrifuge uses a cylindrical centrifuge drum for oil removal, but the degreasing effect is not ideal, leaving a large amount of residual oil on the droplets. This results in a slow drying speed and a long drying time (at least 48 hours) after subsequent drying, leading to low production efficiency. Summary of the Invention

[0004] In response to the shortcomings of existing pellet degreasing centrifuges, the applicant provides a capsule centrifugation oil removal device with a reasonable structure, which removes oil more thoroughly, has a better oil removal effect, shortens the subsequent drying time, has a better drying effect, and improves production efficiency.

[0005] The technical solution adopted in this invention is as follows: A capsule centrifugal oil removal device includes a rotating drum assembly on a frame, a centrifugal assembly on the feed side of the rotating drum assembly, and a pellet inlet pipe inserted into the centrifugal assembly; the centrifugal assembly is equipped with a centrifugal hub, which is driven by a centrifugal motor; a conical section is provided on the centrifugal hub, the diameter of which gradually increases from the feed end to the discharge end, and a number of sieve holes are staggered on the conical section.

[0006] As a further improvement to the above technical solution: The centrifugal drum is arranged horizontally; the screen holes in the conical section of the centrifugal drum are elongated holes, and the length of each screen hole gradually increases from the feed end to the discharge end. The screen holes closer to the discharge end are longer.

[0007] The centrifugal hub is provided with a first straight cylindrical section and a second straight cylindrical section. The small diameter end of the conical section is connected to the first straight cylindrical section, and the large diameter end is connected to the second straight cylindrical section. The axial length of the conical section is greater than the axial length of the first straight cylindrical section and the second straight cylindrical section.

[0008] The centrifugal assembly is equipped with a rotating drum, the centrifugal hub is fixed at the discharge end of the rotating drum, and the shot inlet pipe is inserted at the feed end of the rotating drum. The rotating drum is mounted on the frame via a bearing assembly, and a pulley is fitted on the rotating drum. The pulley is connected to the drive shaft of the centrifugal motor via a transmission belt, and the centrifugal motor is fixed on the frame.

[0009] The rotating drum is arranged horizontally; a through conical hole is opened in the rotating drum along the axial direction. The small diameter end of the conical hole is the feed end and the large diameter end is the discharge end. There is a gap between the outer surface of the shot inlet pipe and the inner surface of the conical hole; the diameter of the large diameter end of the conical hole is less than or equal to the diameter of the first straight section of the centrifugal rotating drum.

[0010] The centrifugal hub is equipped with a flange, and a countersunk hole is opened on the rotating drum accordingly. The flange is inserted into the countersunk hole and pressed tightly by a pressure plate, which is fixed on the rotating drum.

[0011] The shot inlet pipe includes a vertical pipe section, a curved pipe section, and a horizontal pipe section. The vertical pipe section includes a straight section and a conical section. The straight section is connected to the large-diameter end of the conical section, and the small-diameter end of the conical section is connected to the curved pipe section. The horizontal pipe section is inserted horizontally into the rotating drum of the centrifugal assembly. The diameter of the horizontal pipe section is smaller than the diameter of the small-diameter end of the conical hole of the rotating drum.

[0012] The centrifugal hub of the centrifugal assembly is located inside the oil receiving tank, and an oil drain pipe is connected to the bottom of the oil receiving tank.

[0013] The feed side of the rotating drum assembly is equipped with a feed cylinder, which is a conical cylinder. Its large diameter end is connected to the rotating drum body, and its small diameter end is directly opposite the second straight cylinder section of the centrifugal rotating hub. The diameter of the second straight cylinder section is less than or equal to the diameter of the feed end of the feed cylinder. A shot blower is provided on the discharge side of the rotating drum assembly.

[0014] The rotating cage assembly includes a rotating cage body, support rollers, and a rotating cage motor. The rotating cage body is connected to the rotating cage motor, the support rollers are supported on the underside of the rotating cage body, and the support rollers are rotatably connected to the frame. The rotating cage motor is fixed to the frame.

[0015] The beneficial effects of this invention are as follows: This invention adds a centrifugal component before the rotary drum assembly. Within the centrifugal component, most (80-90%) of the grease is separated by centrifugation before being fed into the rotary drum assembly for further separation of the remaining grease. The advantages of this approach are twofold: firstly, the grease is removed through two separation processes—centrifugation and rotary drum—compared to the single separation process in existing technologies, resulting in more thorough grease removal and a better grease removal effect; secondly, with most of the grease removed in the centrifugal component, the rotary drum assembly bears a lighter grease removal load, allowing it to fully utilize its grease removal function and completely remove the remaining grease. After the grease on the pellets is thoroughly removed through these two processes, the pellets are then sent to the drying stage for drying. Less grease remains on the pellets, significantly increasing the drying speed, shortening the drying time (approximately 7-8 hours), resulting in better drying effects and higher production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a schematic diagram of the centrifuge assembly.

[0018] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0019] In the picture: 1. Rack; 2. Rotary drum assembly; 21. Rotary drum body; 22. Support rollers; 23. Rotary drum motor; 24. Feed cylinder; 3. Centrifugal assembly; 31. Rotary drum; 311. Conical hole; 312. Countersunk hole; 32. Centrifugal hub; 321. First straight section; 322. Conical section; 3221. Sieve hole; 323. Second straight section; 324. Flanged edge; 33. Bearing assembly; 34. Pressure plate; 35. Pulley; 36. Drive belt; 37. Centrifugal motor; 4. Shot inlet pipe; 41. Vertical pipe section; 411. Straight section; 412. Conical section; 42. Bend section; 43. Horizontal pipe section; 5. Oil tank; 6. Oil drain pipe; 7. Shot blower. Detailed Implementation

[0020] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0021] like Figure 1As shown, the frame 1 of the present invention is provided with a rotating drum assembly 2. The feed side of the rotating drum assembly 2 is provided with a centrifugal assembly 3, a shot inlet pipe 4, an oil receiving tank 5, and an oil discharge pipe 6. The discharge side of the rotating drum assembly 2 is provided with a shot blower 7. The shot inlet pipe 4 is inserted into the feed port of the centrifugal assembly 3. The centrifugal assembly 3 passes laterally through the oil receiving tank 5. The oil discharge pipe 6 is located at the bottom of the oil receiving tank 5 and is connected to the oil receiving tank 5.

[0022] The rotating drum assembly 2 includes a rotating drum body 21, support rollers 22, and a rotating drum motor 23. The rotating drum body 21 is connected to and driven by the rotating drum motor 23, and the support rollers 22 support both ends of the lower side of the rotating drum body 21. The support rollers 22 are rotatably connected to the frame 1, and the rotating drum motor 23 is fixed to the frame 1. A feed cylinder 24 is connected to the side of the rotating drum body 21 on the feed side. The feed cylinder 24 is a conical cylinder, with its large-diameter end connected to the rotating drum body 21 and its small-diameter end facing the discharge port of the centrifugal assembly 3.

[0023] like Figure 1 , Figure 2 As shown, the centrifugal assembly 3 includes a rotating drum 31 and a centrifugal hub 32, with their central axes arranged horizontally. The rotating drum 31 and centrifugal hub 32 are horizontally arranged, allowing the pellets to leave the centrifugal hub 32 at a relatively low speed (typically 200-300 rpm) under the influence of gravity. This ensures that the grease is fully removed under centrifugal force while preventing deformation or damage to the pellets due to excessive speed and kinetic energy. The centrifugal hub 32 is fixed to the discharge side of the rotating drum 31, and the pellet inlet pipe 4 is inserted into the feed side of the rotating drum 31. The rotating drum 31 is mounted on a bearing assembly 33, which is fixed to the frame 1. A pulley 35 is fixedly fitted onto the feed end of the rotating drum 31, and the pulley 35 is connected to the drive shaft of the centrifugal motor 37 via a transmission belt 36. The centrifugal motor 37 is fixed to the frame 1. The centrifugal drum 32 is installed inside the oil receiving tank 5. The grease separated by the centrifugal drum 32 is collected by the oil receiving tank 5 and discharged to the outside through the oil drain pipe 6.

[0024] like Figure 2 As shown, a through conical hole 311 is formed axially inside the rotating drum 31 of the centrifugal assembly 3. The small-diameter end of the conical hole 311 is the feed end, and the large-diameter end is the discharge end, meaning the diameter of the conical hole 311 gradually increases from the feed end to the discharge end. The inner hole of the rotating drum 31 is set as a conical hole 311. The design of the conical hole 311 allows the droplets carrying a large amount of oil to form a spiral motion better after entering the rotating drum 31, thereby increasing the chance of collision between the droplets and the drum wall and improving the separation efficiency. Moreover, the design of the conical hole 311 makes it easier for the oil to be thrown towards the drum wall under the action of centrifugal force, and then flow along the conical wall towards the discharge port, improving the oil separation efficiency and also facilitating the discharge of oil.

[0025] like Figure 2As shown, the centrifugal hub 32 of the centrifugal assembly 3 is pressed onto the rotating drum 31 by a pressure plate 34. The centrifugal hub 32 is sequentially arranged from the feed end to the discharge end as a first straight section 321, a conical section 322, and a second straight section 323. The diameter of the conical section 322 gradually increases from the feed end to the discharge end, with its smaller diameter end connecting to the first straight section 321 and its larger diameter end connecting to the second straight section 323. The axial length of the conical section 322 is greater than that of the first straight section 321 and the second straight section 323. The centrifugal hub 32's longer axially lengthened conical section 322 increases the spiral motion path and time of the droplets within the conical section 322, allowing the grease to obtain a more thorough separation path and separation time within the conical section 322, resulting in more complete grease separation. Figure 3 As shown, the first cylindrical section 321 has a flange 324 that extends radially outward from the end facing the rotating drum 31. A countersunk hole 312 is correspondingly formed on the end face of the rotating drum 31. The flange 324 is inserted into the countersunk hole 312 and pressed tightly by a pressure plate 34, which is fixed to the rotating drum 31. The diameter of the hole in the first cylindrical section 321 is greater than or equal to the diameter of the large-diameter end of the tapered hole 311 of the rotating drum 31, ensuring that all the grease separated by the rotating drum 31 flows into the centrifugal hub 32 and is discharged from the centrifugal hub 32, preventing grease from remaining in the rotating drum 31 and affecting the separation efficiency and effect. Figure 2 , Figure 3 As shown, the conical section 322 has a number of staggered screen holes 3221. Each screen hole 3221 is elongated, and its length gradually increases from the feed end to the discharge end. Specifically, the screen holes 3221 closer to the discharge end are longer. Since the grease separated from the conical section 322 flows along the conical wall towards the discharge end, gradually increasing the flow area of ​​the screen holes 3221 in the direction of grease flow facilitates the discharge of the separated grease into the oil receiving tank 5, improving separation efficiency and effect. Figure 1 As shown, the second straight section 323 is directly opposite the feed cylinder 24 of the rotating drum assembly 2. The diameter of the second straight section 323 is less than or equal to the diameter of the feed end of the feed cylinder 24, ensuring that all the pellets output from the second straight section 323 enter the rotating drum body 21 through the feed cylinder 24.

[0026] like Figure 2As shown, the shot inlet pipe 4 is connected to the frame 1 via a connecting plate. The shot inlet pipe 4 and the connecting plate do not contact the rotating drum 31 of the centrifugal assembly 3 to prevent interference with the rotation of the rotating drum 31. The shot inlet pipe 4 includes a vertical pipe section 41, a curved pipe section 42, and a horizontal pipe section 43. The vertical pipe section 41 includes a straight section 411 and a conical section 412. The straight section 411 connects to the large-diameter end of the conical section 412, and the small-diameter end of the conical section 412 connects to the curved pipe section 42. The horizontal pipe section 43 is horizontally inserted into the rotating drum 31 of the centrifugal assembly 3. The diameter of the horizontal pipe section 43 is smaller than the diameter of the small-diameter end of the conical hole 311 of the rotating drum 31. There is a gap between the outer surface of the horizontal pipe section 43 and the inner surface of the conical hole 311 to prevent the horizontal pipe section 43 from interfering with the movement of the rotating drum 31. The shot inlet pipe 4 feeds vertically through the vertical pipe section 41, turns to a horizontal direction after passing through the curved pipe section 42, and then horizontally enters the rotating drum 31 from the horizontal pipe section 43.

[0027] In actual use, the oil-laden pellets are fed vertically from the feed pipe 4, then turned to a horizontal feeding direction and sent to the centrifugal assembly 3. After most of the oil is separated by centrifugation in the centrifugal assembly 3, the pellets are sent to the rotating drum assembly 2 for further separation of the remaining oil. After being dried by the shot blower 7, the pellets are sent to the subsequent drying stage for drying treatment.

[0028] This invention adds a centrifugal assembly 3 before the rotary drum assembly 2. Within the centrifugal assembly 3, most (80-90%) of the grease is centrifuged and separated before being fed into the rotary drum assembly 2 for further separation of the remaining grease. The advantages of this approach are twofold: firstly, the grease is removed through two separation processes—centrifugal assembly 3 and rotary drum assembly 2—compared to the single separation process in existing technologies, resulting in more thorough grease removal and a better grease removal effect; secondly, with most of the grease removed in the centrifugal assembly 3, the rotary drum assembly 2 bears a much lighter grease removal burden, allowing it to fully utilize its grease removal function and completely remove the remaining grease. After the grease on the pellets is thoroughly removed through these two processes, the pellets are then sent to the drying stage for drying. This results in less residual grease on the pellets, significantly increasing the drying speed, shortening the drying time (approximately 7-8 hours), improving the drying effect, and increasing production efficiency.

[0029] The above description is an explanation of the present invention and not a limitation thereof. The present invention can be modified in any form without departing from its spirit.

Claims

1. A capsule centrifugal oil removal device, wherein a rotating drum assembly (2) is provided on a frame (1), characterized in that: A centrifugal assembly (3) is provided on the feeding side of the rotating drum assembly (2), and a pellet inlet pipe (4) is inserted into the centrifugal assembly (3); a centrifugal hub (32) is provided on the centrifugal assembly (3), and the centrifugal hub (32) is driven by a centrifugal motor (37); a conical section (322) is provided on the centrifugal hub (32), and the diameter of the conical section (322) gradually increases from the feeding end to the discharge end, and several sieve holes (3221) are staggered on the conical section (322).

2. The capsule centrifugal oil removal device according to claim 1, characterized in that: The centrifugal hub (32) is arranged horizontally; the screen holes (3221) of the conical section (322) of the centrifugal hub (32) are elongated holes, and the length of each screen hole (3221) gradually increases from the feed end to the discharge end. The screen hole (3221) closer to the discharge end has a longer length.

3. The capsule centrifugal oil removal device according to claim 1, characterized in that: The centrifugal hub (32) is provided with a first straight cylindrical section (321) and a second straight cylindrical section (323). The small diameter end of the conical section (322) is connected to the first straight cylindrical section (321), and the large diameter end is connected to the second straight cylindrical section (323). The axial length of the conical section (322) is greater than the axial length of the first straight cylindrical section (321) and the second straight cylindrical section (323).

4. The capsule centrifugal oil removal device according to claim 1, characterized in that: A rotating drum (31) is provided on the centrifugal assembly (3), a centrifugal hub (32) is fixed at the discharge end of the rotating drum (31), and a pellet inlet pipe (4) is inserted at the feed end of the rotating drum (31). The rotating drum (31) is set on the frame (1) through a bearing assembly (33), and a pulley (35) is sleeved on the rotating drum (31). The pulley (35) is connected to the drive shaft of the centrifugal motor (37) through a transmission belt (36). The centrifugal motor (37) is fixed on the frame (1).

5. The capsule centrifugal oil removal device according to claim 4, characterized in that: The rotating drum (31) is arranged horizontally; a through conical hole (311) is opened in the rotating drum (31) along the axial direction. The small diameter end of the conical hole (311) is the feed end and the large diameter end is the discharge end. There is a gap between the outer surface of the shot inlet pipe (4) and the inner surface of the conical hole (311); the diameter of the large diameter end of the conical hole (311) is less than or equal to the diameter of the first straight section (321) of the centrifugal rotating hub (32).

6. The capsule centrifugal oil removal device according to claim 1, characterized in that: A flange (324) is provided on the centrifugal hub (32), and a countersunk hole (312) is opened on the rotating drum (31). The flange (324) is inserted into the countersunk hole (312) and pressed by the pressure plate (34). The pressure plate (34) is fixed on the rotating drum (31).

7. The capsule centrifugal oil removal device according to claim 1, characterized in that: The feed pipe (4) includes a vertical pipe section (41), a bent pipe section (42) and a horizontal pipe section (43). The vertical pipe section (41) includes a straight section (411) and a conical section (412). The straight section (411) is connected to the large diameter end of the conical section (412), and the small diameter end of the conical section (412) is connected to the bent pipe section (42). The horizontal pipe section (43) is horizontally inserted into the rotating drum (31) of the centrifugal assembly (3). The diameter of the horizontal pipe section (43) is smaller than the diameter of the small diameter end of the conical hole (311) of the rotating drum (31).

8. The capsule centrifugal oil removal device according to claim 1, characterized in that: The centrifugal hub (32) of the centrifugal assembly (3) is located inside the oil receiving tank (5), and the bottom of the oil receiving tank (5) is connected to the oil drain pipe (6).

9. The capsule centrifugal oil removal device according to claim 1, characterized in that: The feed cylinder (24) is provided on the feed side of the rotating drum assembly (2). The feed cylinder (24) is a conical cylinder. Its large diameter end is connected to the rotating drum body (21), and its small diameter end is directly opposite the second straight cylinder section (323) of the centrifugal rotating hub (32). The diameter of the second straight cylinder section (323) is less than or equal to the diameter of the feed end of the feed cylinder (24). A shot blower (7) is provided on the discharge side of the rotating drum assembly (2).

10. The capsule centrifugal oil removal device according to claim 1, characterized in that: The rotating cage assembly (2) includes a rotating cage body (21), a support roller (22) and a rotating cage motor (23). The rotating cage body (21) is connected to the rotating cage motor (23). The support roller (22) rests on the underside of the rotating cage body (21). The support roller (22) is rotatably connected to the frame (1). The rotating cage motor (23) is fixed on the frame (1).

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