Purification device for protein peptide powder processing

CN224894402UActive Publication Date: 2026-10-27GUANGZHOU SHIHAO BIOTECHNOLOGY CO LTD
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Patent Information

Application Number
CN202522556369.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-02
Publication Date
2026-10-27
Estimated Expiration
2035-12-02

AI Technical Summary

Technical Problem

[0006]针对现有技术的不足,本实用新型提供了一种蛋白肽粉加工用纯化装置,解决了背景的问题

Benefits of technology

1、该一种蛋白肽粉加工用纯化装置,本装置有益效果显著,适配蛋白肽工业化纯化需求:其一,通过驱动组件实现离心筒与螺旋刮料叶片反向转动,既依托离心力高效分离合格蛋白肽与杂质,又能借刮料叶片清除筒壁附着杂质、推送杂质排出,从源头防止离心筒堵塞,保障分离效率;其二,采用内外双重吹气结构,外部第一吹气管向离心筒外壁吹气,内部空心转杆与连接杆向筒内吹气,双重作用减少蛋白肽残留,大幅提升产品回收率;其三,密封式杂质收集组件可收纳杂质,无需停机清理,避免生产中断与二次污染,契合连续化生产需求;其四,纯化外壳模块化设计及法兰、螺栓连接方式,拆装便捷,降低设备维修维护难度;其五,顶盖与中筒、法兰盘等多部位设橡胶圈或密封圈,隔绝外界污染,确保蛋白肽纯度,保障产品品质。

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Abstract

The utility model belongs to protein peptide purification technical field, concretely is a kind of purification device for protein peptide powder processing, including purification shell, the top of the purification shell is fixedly connected with feed box, feed pipe is fixedly connected in feed box, feed tube is rotatably installed on feed box, the bottom of feed tube is installed with centrifugal cylinder, the inside of centrifugal cylinder is installed with spiral scraping blade, the top of the purification shell is installed for driving spiral scraping blade and the driving assembly of centrifugal cylinder reverse rotation, the bottom of the purification shell is connected with impurity collection assembly, the inside of the purification shell is installed with the air blowing assembly for the air blowing of centrifugal cylinder, reverse rotation is realized to centrifugal cylinder and spiral scraping blade by driving assembly, both rely on centrifugal force and impurity, and can remove impurity, push impurity and discharge from source to prevent centrifugal cylinder from being blocked, guarantee separation efficiency.
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Description

Technical Field

[0001] This utility model relates to the field of protein peptide purification technology, specifically a purification device for processing protein peptide powder. Background Technology

[0002] In the industrial production of protein peptide powder, purification is a crucial step in ensuring product purity and quality. Centrifugation has become one of the core processes for purifying protein peptide powder because it does not rely on extreme conditions such as high temperature or acid / alkali (thus avoiding denaturation and inactivation of protein peptides). This process uses the high-speed rotation of a centrifuge to generate centrifugal force, achieving the separation of "lightweight qualified protein peptides" from "high-quality impurities (such as large molecular protein fragments, undissolved raw material particles, etc.)" in the protein peptide powder mixture. Qualified protein peptides can pass through the separation gaps or sieves of the centrifuge, while impurities remain inside the centrifuge for subsequent processing.

[0003] However, existing protein peptide powder centrifugal purification devices generally face the technical challenge of impurity accumulation and blockage in the centrifuge cylinder during long-term operation. The specific problems are as follows: High risk of impurity adhesion and blockage: During centrifugation, impurities remaining in the centrifuge tube (especially highly viscous macromolecular impurities) are prone to adhere to the inner wall of the centrifuge tube or become embedded in the separation gaps and sieve holes of the centrifuge tube. As the running time increases, the amount of impurities gradually increases, which will directly lead to the narrowing or even blockage of the separation channel of the centrifuge tube. This not only reduces the centrifugal force transmission efficiency, but also reduces the pass rate of qualified protein peptides, seriously affecting the purification effect and production capacity.

[0004] Low cleaning efficiency and disruption to continuous production: To address the aforementioned blockage problem, existing equipment lacks a dedicated online cleaning structure, often requiring manual disassembly of the centrifuge drum after shutdown. On one hand, manual cleaning is cumbersome, time-consuming, and difficult to thoroughly remove stubborn impurities adhering to the drum walls or gaps; on the other hand, frequent shutdowns not only disrupt industrial production but may also affect the purity of subsequent batches of protein peptide powder due to external contamination during disassembly.

[0005] Therefore, we propose a purification device for processing protein peptide powder. Utility Model Content

[0006] To address the shortcomings of existing technologies, this invention provides a purification device for processing protein peptide powder, thus solving the problems mentioned above.

[0007] To achieve the above objectives, this utility model provides the following technical solution: A purification device for processing protein peptide powder includes a purification shell, a feed box fixedly connected to the top of the purification shell, a feed pipe fixedly connected to the feed box, a conveying pipe rotatably mounted on the feed box, a centrifuge cylinder installed at the bottom of the conveying pipe, a plurality of conveying holes opened on the conveying pipe, a spiral scraper blade installed inside the centrifuge cylinder, a drive assembly for driving the spiral scraper blade to rotate in the opposite direction to the centrifuge cylinder installed at the top of the purification shell, a discharge pipe fixedly connected to the bottom of the purification shell, an impurity collection assembly connected to the bottom of the purification shell, and an air blowing assembly for blowing air into the centrifuge cylinder installed inside the purification shell.

[0008] Preferably, the purification shell consists of a top cover, a middle cylinder, and a bottom cylinder, and the top cover, middle cylinder, and bottom cylinder are fixedly connected to each other by bolts.

[0009] Preferably, the drive assembly includes a drive motor, a mounting cover is fixedly connected to the top of the feed box, the drive motor is fixedly mounted on the mounting cover, a driving bevel gear is fixedly connected to the output end of the drive motor, a first driven bevel gear is fixedly fitted on the top of the feed pipe, a rotating rod is rotatably passed through the feed pipe, a second driven bevel gear is fixedly fitted on the outer surface of the rotating rod, both the first and second driven bevel gears mesh with the drive bevel gear, the rotating rod rotatably passes into the interior of the centrifuge cylinder, a connecting rod is connected to the bottom of the rotating rod, and the connecting rod is fixedly connected to the spiral scraper blades through several connecting plates.

[0010] Preferably, the air blowing assembly includes a first air blowing pipe, which is fixedly installed on the top cover. Several nozzles are fixedly installed on the first air blowing pipe, and an air inlet pipe is fixedly connected to the top of the first air blowing pipe. The first air blowing pipe is located outside the centrifuge cylinder.

[0011] Preferably, both the rotating rod and the connecting rod are hollow structures, and both the rotating rod and the connecting rod are provided with a number of air holes. The top of the rotating rod is rotatably connected to a first rotary joint, which is fixedly installed on the mounting cover. The top of the first rotary joint is fixedly connected to an auxiliary connecting pipe, which is fixedly connected to the air inlet pipe.

[0012] Preferably, a connecting ring plate is fixedly connected to the top of the centrifuge cylinder, and an installation cover is fixedly connected to the connecting ring plate by bolts. The bottom of the conveying pipe is fixedly connected to the installation cover.

[0013] Preferably, a first flange is fixedly connected to the bottom of the rotating rod, and a second flange is fixedly connected to the top of the connecting rod, with the first flange and the second flange being fixedly connected by bolts.

[0014] Preferably, a second rotary joint is fixedly installed at the center of the bottom of the bottom cylinder, a rotating tube is rotatably connected to the top of the second rotary joint, a first mounting plate is fixedly connected to the top of the rotating tube, a waste discharge pipe is fixedly connected to the bottom of the centrifuge cylinder, a second mounting plate is fixedly connected to the bottom of the waste discharge pipe, an annular protrusion is fixedly connected to the first mounting plate, an annular groove is formed at the bottom of the second mounting plate, the annular protrusion abuts against the inside of the annular groove, a sealing ring is installed inside the annular groove, a plurality of positioning rods are fixedly connected to the bottom of the centrifuge cylinder, a plurality of positioning holes are formed on the first mounting plate, and the positioning rods are inserted into the positioning holes.

[0015] Preferably, the impurity collection assembly includes a collection cylinder, which is fixedly connected to the bottom of the second rotary joint via a pipe. A drain pipe is fixedly connected to the bottom of the collection cylinder, and both ends of the collection cylinder are sealed with sealing caps.

[0016] Preferably, rubber rings are installed between the top cover and the middle cylinder, between the middle cylinder and the bottom cylinder, between the first flange and the second flange, and between the connecting ring plate and the mounting cover.

[0017] This invention provides a purification device for processing protein peptide powder. Compared with the prior art, it has the following advantages: 1. This purification device for protein peptide powder processing offers significant advantages and is well-suited to the industrial purification needs of protein peptides: Firstly, the drive component enables the centrifuge cylinder and the spiral scraper blades to rotate in opposite directions. This not only efficiently separates qualified protein peptides from impurities using centrifugal force but also removes impurities adhering to the cylinder wall and pushes them out, preventing centrifuge cylinder blockage at the source and ensuring separation efficiency. Secondly, it employs a dual-blowing structure: the external first air pipe blows air onto the outer wall of the centrifuge cylinder, while the internal hollow rotating rod and connecting rod blow air into the cylinder. This dual action reduces protein peptide residue and significantly improves product recovery rate. Thirdly, the sealed impurity collection component can collect impurities without requiring machine shutdown for cleaning, avoiding production interruptions and secondary contamination, thus meeting the needs of continuous production. Fourthly, the modular design of the purification shell and the flange and bolt connection methods facilitate easy disassembly and assembly, reducing the difficulty of equipment maintenance. Fifthly, rubber rings or sealing rings are installed on the top cover, middle cylinder, flanges, and other parts to isolate external contamination, ensuring the purity of the protein peptides and guaranteeing product quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the main structure of the present utility model; Figure 2 This is a schematic diagram of the main cross-sectional structure of the present invention; Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle; Figure 4For the present utility model Figure 2 Enlarged schematic diagram of the structure at point B; Figure 5 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point C; Figure 6 For the present utility model Figure 2 Enlarged schematic diagram of the structure at point D.

[0019] In the diagram: 1. Purification shell; 2. Feed pipe; 3. Middle cylinder; 4. Connecting ring plate; 5. Top cover; 6. Drive motor; 7. Mounting cover; 8. Feed box; 9. First air blowing pipe; 10. Air inlet pipe; 11. Sewage discharge pipe; 12. Collection cylinder; 13. Discharge pipe; 14. Sealing cover; 15. Bottom cylinder; 16. First driven bevel gear; 17. Second driven bevel gear; 18. Sealing cover; 19. Second rotary joint; 20. Spiral scraper blade; 21. Centrifuge cylinder; 22. Rotating rod; 23. Feeding pipe; 24. Feeding hole; 25. First flange; 26. Second flange; 27. Connecting rod; 28. Impurity discharge pipe; 29. ​​Second mounting plate; 30. First mounting plate; 31. Rotating pipe; 32. Positioning rod; 33. Driving bevel gear; 34. First rotary joint; 35. Auxiliary connecting pipe. Detailed Implementation

[0020] 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.

[0021] Please see Figure 1-6 This utility model provides a technical solution: a purification device for processing protein peptide powder, including a purification shell 1, a feed box 8 fixedly connected to the top of the purification shell 1, a feed pipe 2 fixedly connected to the feed box 8, a conveying pipe 23 rotatably installed on the feed box 8, a centrifuge cylinder 21 installed at the bottom of the conveying pipe 23, a plurality of conveying holes 24 opened on the conveying pipe 23, a spiral scraper blade 20 installed inside the centrifuge cylinder 21, a driving component for driving the spiral scraper blade 20 to rotate in the opposite direction to the centrifuge cylinder 21 installed at the top of the purification shell 1, a discharge pipe 13 fixedly connected to the bottom of the purification shell 1, an impurity collection component connected to the bottom of the purification shell 1, and an air blowing component for blowing air onto the centrifuge cylinder 21 installed inside the purification shell 1.

[0022] The purification shell 1 consists of a top cover 5, a middle cylinder 3, and a bottom cylinder 15. The top cover 5, the middle cylinder 3, and the bottom cylinder 15 are fixedly connected to each other by bolts. The purification shell 1 is composed of a top cover 5, a middle cylinder 3, and a bottom cylinder 15, which facilitates the assembly and disassembly of the purification shell 1.

[0023] The drive assembly includes a drive motor 6, a mounting cover 7 fixedly connected to the top of the feed box 8, the drive motor 6 fixedly mounted on the mounting cover 7, a driving bevel gear 33 fixedly connected to the output end of the drive motor 6, a first driven bevel gear 16 fixedly fitted to the top of the feed pipe 23, a rotating rod 22 rotatably passing through the feed pipe 23, a second driven bevel gear 17 fixedly fitted to the outer surface of the rotating rod 22, both the first driven bevel gear 16 and the second driven bevel gear 17 meshing with the drive bevel gear 33, the rotating rod 22 rotatably passing through the interior of the centrifuge cylinder 21, a connecting rod 27 connected to the bottom of the rotating rod 22, and the connecting rod 27 fixedly connected to the spiral scraper blades 20 through several connecting plates, used to drive the centrifuge cylinder 21 and the spiral scraper blades 20 to move simultaneously and in opposite directions, the rotating centrifuge cylinder 21 for centrifugal separation, and the rotating spiral scraper blades 20 for scraping material downwards.

[0024] The air blowing assembly includes a first air blowing pipe 9, which is fixedly installed on the top cover 5. Several nozzles are fixedly installed on the first air blowing pipe 9. An air inlet pipe 10 is fixedly connected to the top of the first air blowing pipe 9. The first air blowing pipe 9 is located outside the centrifuge cylinder 21.

[0025] Both the rotating rod 22 and the connecting rod 27 are hollow structures, and both the rotating rod 22 and the connecting rod 27 have several air holes. The top of the rotating rod 22 is rotatably connected to the first rotary joint 34, which is fixedly installed on the mounting cover 7. The top of the first rotary joint 34 is also fixedly connected to the auxiliary connecting pipe 35, which is fixedly connected to the air inlet pipe 10. The first air blowing pipe 9 is used to blow air to the outside of the centrifuge cylinder 21. The rotating rod 22 and the connecting rod 27 are hollow structures used to blow air into the inside of the centrifuge cylinder 21 to facilitate the removal of impurities. Similarly, when cleaning the inside of the centrifuge cylinder 21, an external cleaning pipe can be connected to facilitate the cleaning of the device.

[0026] A connecting ring plate 4 is fixedly connected to the top of the centrifuge cylinder 21, and an installation cover 18 is fixedly connected to the connecting ring plate 4 by bolts. The bottom of the conveying pipe 23 is fixedly connected to the installation cover 18.

[0027] The bottom of the rotating rod 22 is fixedly connected to the first flange 25, and the top of the connecting rod 27 is fixedly connected to the second flange 26. The first flange 25 and the second flange 26 are fixedly connected by bolts.

[0028] A second rotary joint 19 is fixedly installed at the center of the bottom of the bottom cylinder 15. A rotating tube 31 is rotatably connected to the top of the second rotary joint 19. A first mounting plate 30 is fixedly connected to the top of the rotating tube 31. A discharge pipe 28 is fixedly connected to the bottom of the centrifuge cylinder 21. A second mounting plate 29 is fixedly connected to the bottom of the discharge pipe 28. An annular protrusion is fixedly connected to the first mounting plate 30. An annular groove is opened at the bottom of the second mounting plate 29. The annular protrusion abuts against the inside of the annular groove. A sealing ring is installed inside the annular groove. Several positioning rods 32 are fixedly connected to the bottom of the centrifuge cylinder 21. Several positioning holes are opened on the first mounting plate 30. The positioning rods 32 are inserted into the positioning holes.

[0029] This device can be easily disassembled and assembled, facilitating the maintenance of the centrifuge cylinder 21. During disassembly, first remove the top cover 5, then lift the top cover 5 upwards. The top cover 5 will cause the centrifuge cylinder 21 to detach from the device, the positioning rod 32 will detach from the first mounting plate 30, and the annular protrusion will detach from the annular groove. After the centrifuge cylinder 21 is detached, remove the bolts between the connecting ring plate 4 and the mounting cover 18 to remove the centrifuge cylinder 21. Then remove the first flange 25 and the second flange 26 to remove the spiral scraper blades 20, making it convenient for personnel to disassemble and maintain the device.

[0030] The impurity collection assembly includes a collection cylinder 12, which is fixedly connected to the bottom of the second rotary joint 19 via a pipe. A drain pipe 11 is fixedly connected to the bottom of the collection cylinder 12, and sealing caps 14 are installed at both ends of the collection cylinder 12.

[0031] Rubber rings are installed between the top cover 5 and the middle cylinder 3, between the middle cylinder 3 and the bottom cylinder 15, between the first flange 25 and the second flange 26, and between the connecting ring plate 4 and the mounting cover 18.

[0032] Working principle: The protein peptide mixture to be purified enters the top feed box 8 through the feed pipe 2. The feed pipe 23 inside the feed box has a rotating structure and several feed holes 24 are opened on its pipe wall. After the material is temporarily stored in the feed box 8, it enters the centrifuge cylinder 21 below evenly through the feed holes 24. When the drive motor 6 starts, the active bevel gear 33 drives the two driven bevel gears to rotate in opposite directions. The first driven bevel gear 16 drives the feed pipe 23 to rotate, which in turn drives the centrifuge cylinder 21 fixed thereto to rotate at high speed. The centrifugal force is used to separate the qualified protein peptides from the impurities in the protein peptide mixture. Under the action of centrifugal force, the qualified protein peptides pass through the gap of the centrifuge cylinder 21 and enter the interior of the middle cylinder 3, and finally are discharged from the discharge pipe 13. The second driven bevel gear 17 drives the rotating rod 22 to rotate in the opposite direction. The bottom of the rotating rod 22 is connected to the connecting rod 27 through the first flange 25 and the second flange 26. The connecting rod 27 fixes the spiral scraper blade 20 through the connecting plate. The spiral scraper blade 20 rotates in the opposite direction with the rotating rod 22. On the one hand, it can prevent the material from accumulating and clogging on the inner wall of the centrifuge cylinder 21. On the other hand, it can push the separated impurities to the bottom of the centrifuge cylinder 21, providing power for the discharge of impurities. To avoid waste caused by qualified protein peptides adhering to the inner wall of the centrifuge or the surface of impurities, the device enhances separation through a dual blowing structure. The external blowing first blowing pipe 9 is fixedly installed on the top cover 5 and located outside the centrifuge 21. Its top is connected to the air source through the air inlet pipe 10. The nozzle on the pipe wall blows air onto the outer wall of the centrifuge 21, blowing the attached protein peptide material off into the middle cylinder 3. Internal air blowing: Both the rotating rod 22 and the connecting rod 27 are hollow structures, and the tube walls are provided with several air holes. The top of the rotating rod 22 is connected to the auxiliary connecting pipe 35 through the first rotary joint 34. The auxiliary connecting pipe 35 is connected to the air inlet pipe 10. The air source blows air from the internal air holes through the hollow rotating rod 22 and the connecting rod 27 to blow off the protein peptide material attached inside the centrifuge, thereby further improving the recovery rate. The bottom of the discharge pipe 28 is fixed with the second mounting plate 29, which is sealed to the first mounting plate 30 at the top of the rotating pipe 31 through "annular protrusion, annular groove and sealing ring". The positioning rod 32 at the bottom of the centrifuge is inserted into the positioning hole of the first mounting plate 30 to ensure synchronous rotation. Impurities enter the rotating pipe 31 through the discharge pipe 28. The bottom of the rotating pipe 31 is fixed to the bottom cylinder 15 through the second rotary joint 19 and connected to the bottom of the collection cylinder 12. The impurities eventually enter the collection cylinder 12 for temporary storage and can be discharged through the drain pipe 11 at the bottom, or cleaned by opening the sealing caps 14 at both ends to avoid the backflow of impurities and secondary pollution. After centrifugation and air blowing, the qualified protein peptide material is concentrated inside the middle cylinder 3 and the bottom cylinder 15, and is finally discharged through the discharge pipe 13 at the bottom of the purification shell 1, completing the entire purification process.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] 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 purification apparatus for processing protein peptide powder, comprising a purification shell (1), characterized in that: The top of the purification shell (1) is fixedly connected to a feed box (8), and a feed pipe (2) is fixedly connected to the feed box (8). A conveying pipe (23) is rotatably installed on the feed box (8). A centrifuge cylinder (21) is installed at the bottom of the conveying pipe (23). Several conveying holes (24) are opened on the conveying pipe (23). A spiral scraper blade (20) is installed inside the centrifuge cylinder (21). A drive assembly for driving the spiral scraper blade (20) to rotate in the opposite direction to the centrifuge cylinder (21) is installed on the top of the purification shell (1). A discharge pipe (13) is fixedly connected to the bottom of the purification shell (1). An impurity collection assembly is connected to the bottom of the purification shell (1). An air blowing assembly for blowing air into the centrifuge cylinder (21) is installed inside the purification shell (1).

2. The purification apparatus for processing protein peptide powder according to claim 1, characterized in that: The purification shell (1) consists of a top cover (5), a middle cylinder (3) and a bottom cylinder (15), and the top cover (5), the middle cylinder (3) and the bottom cylinder (15) are fixedly connected to each other by bolts.

3. The purification apparatus for processing protein peptide powder according to claim 2, characterized in that: The drive assembly includes a drive motor (6), a mounting cover (7) is fixedly connected to the top of the feed box (8), the drive motor (6) is fixedly mounted on the mounting cover (7), the output end of the drive motor (6) is fixedly connected to an active bevel gear (33), the top of the feed pipe (23) is fixedly fitted with a first driven bevel gear (16), a rotating rod (22) is rotatably passed through the feed pipe (23), a second driven bevel gear (17) is fixedly fitted on the outer surface of the rotating rod (22), the first driven bevel gear (16) and the second driven bevel gear (17) are both meshed with the active bevel gear (33), the rotating rod (22) rotatably passes into the interior of the centrifuge cylinder (21), the bottom of the rotating rod (22) is connected to a connecting rod (27), and the connecting rod (27) is fixedly connected to the spiral scraper blade (20) through several connecting plates.

4. The purification apparatus for processing protein peptide powder according to claim 3, characterized in that: The air blowing assembly includes a first air blowing pipe (9), which is fixedly installed on the top cover (5). Several nozzles are fixedly installed on the first air blowing pipe (9). An air inlet pipe (10) is fixedly connected to the top of the first air blowing pipe (9). The first air blowing pipe (9) is located outside the centrifuge cylinder (21).

5. The purification apparatus for processing protein peptide powder according to claim 4, characterized in that: Both the rotating rod (22) and the connecting rod (27) are hollow structures, and both the rotating rod (22) and the connecting rod (27) are provided with several air holes. The top of the rotating rod (22) is rotatably connected to a first rotary joint (34), which is fixedly installed on the mounting cover (7). The top of the first rotary joint (34) is fixedly connected to an auxiliary connecting pipe (35), which is fixedly connected to the air inlet pipe (10).

6. The purification apparatus for processing protein peptide powder according to claim 5, characterized in that: The top of the centrifuge tube (21) is fixedly connected to a connecting ring plate (4), and an installation cover (18) is fixedly connected to the connecting ring plate (4) by bolts. The bottom of the conveying pipe (23) is fixedly connected to the installation cover (18).

7. The purification apparatus for processing protein peptide powder according to claim 6, characterized in that: The bottom of the rotating rod (22) is fixedly connected to a first flange (25), and the top of the connecting rod (27) is fixedly connected to a second flange (26). The first flange (25) and the second flange (26) are fixedly connected by bolts.

8. The purification apparatus for processing protein peptide powder according to claim 7, characterized in that: A second rotary joint (19) is fixedly installed at the center of the bottom of the bottom cylinder (15). A rotating tube (31) is rotatably connected to the top of the second rotary joint (19). A first mounting plate (30) is fixedly connected to the top of the rotating tube (31). A discharge pipe (28) is fixedly connected to the bottom of the centrifuge cylinder (21). A second mounting plate (29) is fixedly connected to the bottom of the discharge pipe (28). An annular protrusion is fixedly connected to the first mounting plate (30). An annular groove is opened at the bottom of the second mounting plate (29). The annular protrusion abuts against the inside of the annular groove. A sealing ring is installed inside the annular groove. A number of positioning rods (32) are fixedly connected to the bottom of the centrifuge cylinder (21). A number of positioning holes are opened on the first mounting plate (30). The positioning rods (32) are inserted into the positioning holes.

9. The purification apparatus for processing protein peptide powder according to claim 8, characterized in that: The impurity collection assembly includes a collection cylinder (12), which is fixedly connected to the bottom of a second rotary joint (19) via a pipe. The bottom of the collection cylinder (12) is fixedly connected to a drain pipe (11), and both ends of the collection cylinder (12) are sealed with sealing caps (14).

10. The purification apparatus for processing protein peptide powder according to claim 9, characterized in that: Rubber rings are installed between the top cover (5) and the middle cylinder (3), between the middle cylinder (3) and the bottom cylinder (15), between the first flange (25) and the second flange (26), and between the connecting ring plate (4) and the mounting cover (18).