A polypeptide powder screening device
By combining an inclined sieve plate and a vibration mechanism, the problem that existing peptide powder screening devices cannot screen according to particle size is solved, achieving efficient and pure screening of peptide powder and meeting the needs of large-scale production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANG HAI WAN SU HUA XUE YOU XIAN GONG SI
- Filing Date
- 2025-06-10
- Publication Date
- 2026-06-12
AI Technical Summary
Existing peptide powder screening devices can only screen impurities and cannot effectively screen peptide powder according to particle size, resulting in the mixing of peptide powder of different particle sizes, which affects its performance in certain application scenarios.
The inclined sieve plate design allows for the sieving of impurities on the upper sieve plate and the sieving of particles by size on the lower sieve plate. Combined with a vibration mechanism to prevent clogging, this design achieves efficient sieving of peptide powder by particle size.
This technology enables effective sieving of peptide powder according to particle size, improves sieving efficiency, prevents sieve clogging, and ensures the purity and quality of peptide powder.
Smart Images
Figure CN224346341U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polypeptide powder screening technology, and in particular to a polypeptide powder screening device. Background Technology
[0002] Peptide powder is a compound powder composed of multiple amino acids linked by peptide bonds. It has wide applications in the pharmaceutical, food, and cosmetic fields. In the pharmaceutical field, it can be used for drug research and development; in the food field, it can be used as a nutritional fortifier to enhance the nutritional value of food; and in the cosmetic industry, it helps improve skin condition. However, peptide powder is prone to being mixed with impurities during the production process. These impurities can affect its effectiveness in various fields and even have adverse effects. Therefore, screening is necessary to ensure the purity and quality of peptide powder.
[0003] Traditional peptide powder screening relies primarily on manual operation using sieves. Operators place the peptide powder to be screened on the sieve and continuously shake it, allowing peptides that fit the sieve's aperture size to pass through while impurities are trapped. This manual operation is extremely inefficient, consuming significant manpower and time, and is unsuitable for large-scale production. Current technology uses machines to drive the sieve's oscillation, significantly improving screening efficiency compared to manual operation. However, in practice, existing screening methods only effectively remove obvious impurities, failing to filter peptides of varying particle sizes. This is because the sieve's screening principle is mainly based on the physical differences between impurities and peptides, lacking a specific design for filtering peptides by particle size. This results in peptides of different sizes mixing together, affecting their performance in applications with strict particle size requirements. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a polypeptide powder screening device, which aims to improve the problem that the existing technology can only screen impurities and cannot screen according to the size of polypeptide powder particles.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a polypeptide powder screening device, comprising a screening box, a support plate fixedly connected to the top right side of the screening box, a feeding mechanism provided on the top of the support plate, a screening mechanism provided on the inner wall of the screening box, a vibration mechanism provided in the middle of the right side of the outer wall of the screening box, and a collection assembly provided at the bottom of the screening box; the screening mechanism includes two inclined screen plates, the outer walls of the two inclined screen plates are respectively fixedly connected to the upper and lower sides of the inner wall of the screening box, baffles are fixedly connected to the top left side of each of the two inclined screen plates, discharge ports are provided on the upper and lower sides of the left end of the outer wall of the screening box, inclined tube one is fixedly connected to the upper and lower sides of the left end of the outer wall of the screening box, inclined tube two is connected to the front end of each of the two inclined tube one, a collection box is connected to the bottom end of each of the two inclined tube two, and a drawer is slidably connected to the right side of the inner wall of each of the two collection boxes.
[0006] As a further description of the above technical solution:
[0007] The vibration mechanism includes a fixed base. The left side of the outer wall of the fixed base is fixedly connected to the middle of the right end of the outer wall of the screening box. Rotating rods are rotatably connected to the upper and lower sides of the right end of the outer wall of the screening box. The left ends of the two rotating rods pass through the right side of the screening box. Cams are fixedly connected to the outer walls of the two rotating rods. Transmission wheels are fixedly connected to the right ends of the two rotating rods. The same transmission belt is provided on the outer side of the two transmission wheels. The adjacent transmission wheels are connected by the transmission belt. A motor is fixedly connected to the top of the fixed base. The output end of the motor is fixedly connected to the bottom transmission wheel.
[0008] As a further description of the above technical solution:
[0009] The feeding mechanism includes a support frame, the bottom of which is fixedly connected to the top center of the support plate. A screw conveyor is fixedly connected to the top left side of the support frame, and a second motor is fixedly connected to the top right side of the support frame. A funnel is fixedly connected to the top right side of the screw conveyor, and a flow equalization component is provided on the left side of the screw conveyor.
[0010] As a further description of the above technical solution:
[0011] The flow equalization assembly includes a connecting pipe, the right end of which is connected to the left end of the screw conveyor, and the left end of which is connected to a flow equalization plate. Multiple guide plates are fixedly connected to the front and rear sides of the bottom inner wall of the flow equalization plate.
[0012] As a further description of the above technical solution:
[0013] The collection assembly includes a collection frame, the bottom of the screening box has a groove, the collection frame is slidably connected to the groove, and a handle is fixedly connected to the front side of the outer wall of the collection frame.
[0014] As a further description of the above technical solution:
[0015] Two limiting grooves are provided on the front and back sides of the inner walls of the two collection boxes, and two slide bars are fixedly connected to the front and back sides of the outer walls of the two drawers. The slide bars are slidably connected to the corresponding limiting grooves.
[0016] As a further description of the above technical solution:
[0017] The screening box is fixedly connected to four corners at the bottom, and each of the multiple feet has a positioning hole in the middle.
[0018] As a further description of the above technical solution:
[0019] Two mounting strips are fixedly connected to the bottom left and right sides of the collection frame. Multiple rotating rollers are rotatably connected between adjacent mounting strips. Sliding grooves are provided on the bottom left and right sides of the groove, and the multiple rotating rollers are slidably connected to the corresponding sliding grooves.
[0020] This utility model has the following beneficial effects:
[0021] 2. In this utility model, by using inclined screen plates with different screen holes on the upper and lower sides, the upper screen plate initially screens impurities, and the lower screen plate screens polypeptide powder according to particle size. Impurities and particles that do not meet the size requirements flow into the drawer of the collection box through the discharge port, inclined tube one and inclined tube two, while qualified polypeptide powder falls into the collection frame, thus realizing screening according to particle size and overcoming the shortcomings of the existing technology that can only screen impurities and cannot screen according to polypeptide powder particle size.
[0022] 3. In this utility model, the motor is fixedly connected to the bottom transmission wheel. After starting, it provides power to the transmission system. The transmission belt connects the two transmission wheels to realize power transmission, so that the upper and lower transmission wheels rotate synchronously, thereby driving the rotating rod and cam to rotate. When the cam rotates, it regularly strikes the inclined screen plate, causing the screen plate to vibrate. This design overcomes the shortcomings of the prior art where the inclined screen plate is easily blocked by the accumulation of polypeptide powder or impurities, affecting the screening effect, and ensures that the polypeptide powder screening work is highly efficient. Attached Figure Description
[0023] Figure 1 This is a perspective view of a polypeptide powder screening device proposed in this utility model;
[0024] Figure 2 This is a front view of a polypeptide powder screening device proposed in this utility model;
[0025] Figure 3 This is a partial structural schematic diagram of a polypeptide powder screening device proposed in this utility model;
[0026] Figure 4 This is a partial cross-sectional view of the screening box of a polypeptide powder screening device proposed in this utility model;
[0027] Figure 5 This is a schematic diagram of the flow equalization component of a polypeptide powder screening device proposed in this utility model;
[0028] Figure 6 This is a partial structural exploded view of a polypeptide powder screening device proposed in this utility model.
[0029] Legend: 1. Screening box; 2. Screening mechanism; 201. Inclined screen plate; 202. Baffle bar; 203. Discharge port; 204. Inclined tube one; 205. Inclined tube two; 206. Collection box; 207. Drawer; 3. Vibration mechanism; 301. Fixed base; 302. Rotating rod; 303. Cam; 304. Transmission wheel; 305. Transmission belt; 306. Motor one; 4. Support plate; 5. Feeding mechanism; 501. Support frame; 502. Screw conveyor; 503. Motor II; 504. Funnel; 505. Flow equalization assembly; 5051. Connecting pipe; 5052. Flow equalization plate; 5053. Guide plate; 6. Collection assembly; 601. Collection frame; 602. Groove; 603. Handle; 7. Limiting groove; 8. Sliding strip; 9. Foot; 10. Positioning hole; 11. Mounting strip; 12. Rotating roller; 13. Slide groove. Detailed Implementation
[0030] 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.
[0031] Reference Figure 1 , Figure 3 and Figure 4This utility model provides an embodiment of a polypeptide powder screening device, including a screening box 1, which provides a space and operating area for the polypeptide powder screening process. A support plate 4 is fixedly connected to the top right side of the screening box 1 to support a feeding mechanism 5, ensuring its stable placement on the top right side of the screening box 1. The feeding mechanism 5 is located on the top of the support plate 4, conveying the polypeptide powder to be screened into the screening box 1 to prepare for subsequent screening work. A screening mechanism 2 is provided on the inner wall of the screening box 1 to separate the polypeptide powder according to particle size and impurity status. A screening mechanism 2 is located on the middle right side of the outer wall of the screening box 1. A vibration mechanism 3 is provided to prevent sieve plate blockage during the screening process by generating vibration. A collection component 6 is installed at the bottom of the screening box 1 to collect peptide powder that meets the requirements after screening, as well as separated impurities and particles that do not meet the size requirements. The screening mechanism 2 includes two inclined sieve plates 201, the outer walls of which are fixedly connected to the upper and lower sides of the inner wall of the screening box 1, respectively. A baffle 202 is fixedly connected to the top left side of each of the two inclined sieve plates 201 to prevent peptide powder from overflowing from the top left side of the inclined sieve plates 201 during the screening process, ensuring the orderly progress of the screening process. The left end of the screening box 1 has discharge ports 203 on both the upper and lower sides. These ports are used to discharge impurities and polypeptide powder particles that do not conform to the aperture size of the lower sieve plate. Inclined tubes 204 are fixedly connected to the upper and lower sides of the left end of the screening box 1. These tubes guide the material discharged from the discharge ports 203 to inclined tubes 205. Their inclined structure facilitates the natural sliding of the material. The front ends of both inclined tubes 204 are connected to inclined tubes 205, further changing the flow direction of the material and allowing it to flow smoothly into the collection box 206. The bottom ends of both inclined tubes 205 are connected to the collection box 206 to collect the material flowing from the inclined tubes 205. The collection boxes 206 serve as a centralized storage for impurities and particles that do not meet size requirements. Drawers 207 are slidably connected to the right side of the inner wall of each of the two collection boxes 206, facilitating the cleaning and transfer of impurities and particles that do not meet size requirements within the collection boxes 206 and improving operational convenience. Two limiting grooves 7 are provided on the front and rear sides of the inner walls of the two collection boxes 206, providing guidance and limiting for the sliding of the drawers 207, ensuring that the drawers 207 can slide smoothly in a fixed direction. Two sliding strips 8 are fixedly connected to the front and rear sides of the outer walls of the two drawers 207, and the multiple sliding strips 8 are slidably connected to the corresponding multiple limiting grooves 7.
[0032] Specifically, the screening box 1, as the core component, provides space for screening peptide powder. The support plate 4 is fixed to the top right side of the screening box 1, supporting the feeding mechanism 5, which is responsible for feeding the peptide powder into the screening box 1. Inside the screening mechanism 2, two inclined screen plates 201 are fixed to the upper and lower sides of the inner wall of the screening box 1, respectively. Due to their different screen hole sizes, the upper inclined screen plate 201 initially screens impurities, while the lower inclined screen plate 201 screens peptide powder of the correct size. The inclined design facilitates material aggregation to the left. A baffle 202 is fixed to the top left side of the inclined screen plate 201 to prevent material from overflowing from the top left side. The discharge port 203 is located on the upper and lower sides of the left end of the outer wall of the screening box 1, for discharging screened impurities and powders that do not meet size requirements. As peptide powder particles flow out, inclined tube 1 204 connects to discharge port 203, guiding the material to inclined tube 2 205. The front end of inclined tube 1 204 is lower than the rear end to facilitate material flow. Inclined tube 2 205 connects inclined tube 1 204 and collection box 206, allowing the material to flow into collection box 206. Collection box 206 collects impurities and particles that do not meet the size requirements. Drawer 207 is slidably connected to the right side of the inner wall of collection box 206 for easy removal of collected materials. Limiting groove 7 is opened on the front and rear sides of the inner wall of collection box 206. Sliding strip 8 is fixed to the front and rear sides of the outer wall of drawer 207 and slidably connected to limiting groove 7, restricting the sliding direction of drawer 207 and ensuring its stable operation. All components work together to achieve peptide powder screening according to particle size.
[0033] Reference Figure 1 , Figure 4 and Figure 6 The vibration mechanism 3 includes a fixed base 301, which provides a stable mounting foundation for the vibration mechanism 3. The left side of the outer wall of the fixed base 301 is fixedly connected to the middle of the right end of the outer wall of the screening box 1. Rotating rods 302 are rotatably connected to the upper and lower sides of the right end of the outer wall of the screening box 1, which can rotate flexibly on the outer wall of the screening box 1 to prepare for subsequent power transmission and vibration generation. The left ends of the two rotating rods 302 pass through the right side of the screening box 1, so that the rotating rods 302 can function inside the screening box 1. The outer walls of the two rotating rods 302 are fixedly connected to cams 303, which rotate as the rotating rods 302 rotate. The inclined screen plate 201 is vibrated by striking it due to its special shape. The right ends of the two rotating rods 302 are fixedly connected to the transmission wheel 304 for transmitting power. The power of the motor 306 is transmitted to the rotating rod 302. The same transmission belt 305 is provided on the outer side of the two transmission wheels 304 to realize the synchronous transmission of power. The two adjacent transmission wheels 304 are connected by the transmission belt 305 to ensure that the two transmission wheels 304 can rotate synchronously. The top of the fixed base 301 is fixedly connected to the motor 306, and the output end of the motor 306 is fixedly connected to the bottom transmission wheel 304.
[0034] Specifically, the left side of the outer wall of the fixed base 301 is connected to the middle of the right side of the outer wall of the screening box 1, providing stable support for the entire mechanism. The motor 306 is fixed on the top of the fixed base 301 as a power source. Its output end is connected to the bottom transmission wheel 304. After starting, it drives the bottom transmission wheel 304 to rotate. The two transmission wheels 304 are connected by the same transmission belt 305, so that when the bottom transmission wheel 304 rotates, it can drive the upper transmission wheel 304 to rotate synchronously. The right end of the transmission wheel 304 is connected to the rotating rod 302, and the rotating rod 302 rotates accordingly. The left end of the rotating rod 302 passes through the right side of the screening box 1, and the cam 303 fixed on the outer wall also rotates accordingly. During the rotation of the cam 303, it continuously strikes the inclined screen plate 201 to generate vibration, preventing the inclined screen plate 201 from being blocked by material accumulation when screening polypeptide powder, and ensuring that the screening work is carried out smoothly.
[0035] Reference Figure 1 , Figure 4 and Figure 5 The feeding mechanism 5 includes a support frame 501, which supports and fixes the various components of the feeding mechanism 5, providing a structural foundation for the entire feeding process. The bottom of the support frame 501 is fixedly connected to the top center of the support plate 4. A screw conveyor 502 is fixedly connected to the top left side of the support frame 501, responsible for conveying the peptide powder from one place to another. A motor 503 is fixedly connected to the top right side of the support frame 501, serving as a power source to provide power support for the operation of the screw conveyor 502. A funnel 504 is fixedly connected to the top right side of the screw conveyor 502, used to receive the peptide powder after screening and guide the peptide powder smoothly into the screw conveyor 502. A flow equalization component 505 is provided on the left side. The flow equalization component 505 includes a connecting pipe 5051, which is used to connect the screw conveyor 502 and the flow equalization plate 5052 to realize the transition conveying of peptide powder from the screw conveyor 502 to the flow equalization plate 5052. The right end of the connecting pipe 5051 is connected to the left end of the screw conveyor 502. The flow equalization plate 5052 disperses the incoming peptide powder to make its distribution more uniform. The left end of the connecting pipe 5051 is connected to the flow equalization plate 5052. Multiple guide plates 5053 are fixedly connected to the bottom front and rear sides of the inner wall of the flow equalization plate 5052. The guide plates 5053 guide and divert the peptide powder in the flow equalization plate 5052 to further ensure that the peptide powder enters the screening box 1 uniformly.
[0036] Specifically, the bottom of the support frame 501 is connected to the top center of the support plate 4, supporting the entire feeding mechanism 5. The motor 503 is fixed on the top right side of the support frame 501, providing power to the screw conveyor 502. The top right side of the screw conveyor 502 is connected to the funnel 504. The peptide powder to be screened enters from the funnel 504 and is conveyed by the screw conveyor 502. In the flow equalization component 505, the connecting pipe 5051 connects the left end of the screw conveyor 502 to the flow equalization plate 5052, guiding the conveyed peptide powder into the flow equalization plate 5052. The guide plate 5053 in the flow equalization plate 5052 diverts the peptide powder, making it evenly enter the subsequent screening stage.
[0037] Reference Figure 1 , Figure 2 and Figure 3 The collection component 6 includes a collection frame 601 for collecting peptide powder that meets the requirements after screening. A groove 602 is provided at the bottom of the screening box 1, and the collection frame 601 is slidably connected to the groove 602, facilitating the insertion and removal of the collection frame 601 and making it easier to collect and clean the peptide powder. A handle 603 is fixedly connected to the front side of the outer wall of the collection frame 601 for easy gripping by the operator, thus making it easier to move the collection frame 601. Two mounting strips 11 are fixedly connected to the left and right sides of the bottom of the collection frame 601 for mounting rotating rollers 12, providing support for the rotating rollers 12. For support, multiple rotating rollers 12 are rotatably connected between adjacent mounting strips 11. Slide grooves 13 are provided on the left and right sides of the bottom of the groove 602. The rotating rollers 12 cooperate with the slide grooves 13 to reduce the friction when the collection frame 601 slides. The multiple rotating rollers 12 are slidably connected to the corresponding slide grooves 13 respectively. Foot seats 9 are fixedly connected at the four corners of the bottom of the screening box 1 to support the screening box 1. Positioning holes 10 are provided in the middle of the multiple foot seats 9, which can be used to insert positioning devices to further enhance the stability of the screening box 1 when it is placed.
[0038] Specifically, the collection frame 601 is slidably connected to the groove 602 at the bottom of the screening box 1, which can stably receive qualified polypeptide powder falling from the screening box 1. The handle 603 on the front side of the outer wall of the collection frame 601 allows the operator to pull or push the collection frame 601 by gripping it, which facilitates the removal and placement of the collection frame 601. The mounting strips 11 on the left and right sides of the bottom of the collection frame 601 are rotatably connected to multiple rotating rollers 12. The sliding grooves 13 on the left and right sides of the bottom of the groove 602 slide in cooperation with the rotating rollers 12. This structure makes the sliding of the collection frame 601 in the groove 602 smoother, reduces friction, and reduces the resistance when the collection frame 601 is removed and placed. The feet 9 fixedly connected at the four corners of the bottom of the screening box 1 play the role of supporting the screening box 1 and keeping it stable. The positioning hole 10 in the middle of the foot 9 can be used to insert positioning pins and other fixing devices to further enhance the stability of the screening box 1 when placed, prevent it from shifting during operation, and ensure the stable operation of the entire polypeptide powder screening device.
[0039] Working principle: First, the polypeptide powder to be screened is poured into the funnel 504 of the feeding mechanism 5. Then, the motor 503 is started, which drives the screw conveyor 502 to operate. The screw conveyor 502 transports the polypeptide powder to the connecting pipe 5051. Subsequently, the polypeptide powder enters the flow equalization plate 5052, which makes the polypeptide powder more evenly distributed. Then, under the diversion action of the guide plate 5053, the polypeptide powder smoothly enters the screening box 1. After entering the screening box 1, the screening mechanism 2 starts to work. The screen holes of the upper inclined screen plate 201 are larger than those of the lower inclined screen plate 201. The upper inclined screen plate 201 first performs preliminary screening of the polypeptide powder, mainly screening out larger impurities. The lower inclined screen plate 201 is used to screen polypeptide powder that meets specific sizes. Since both inclined screen plates 201 are inclined to the left... The screened impurities and polypeptide powder particles of different sizes are tilted and gathered to the left by gravity on the inclined screen plate 201. They flow into the inclined tube 1 204 through the discharge port 203. The front end of the inclined tube 1 204 is lower than the rear end, which allows impurities and polypeptide powder particles that do not conform to the aperture size of the lower screen plate to pass smoothly through the inclined tube 1 204 and flow into the inclined tube 2 205. Then, they flow into the collection box 206 through the inclined tube 2 205. The drawer 207 slidably connected inside the collection box 206 can conveniently collect the impurities and particles that do not conform to the size from the inclined tube 2 205. Finally, the polypeptide powder that meets the requirements will pass through the lower inclined screen plate 201 and fall directly into the collection frame 601 located at the bottom of the screening box 1. This achieves effective screening according to the size of polypeptide powder particles and overcomes the shortcomings of the prior art.
[0040] When the device starts working, motor 306 is activated. The output end of motor 306 is fixedly connected to the bottom drive wheel 304. The power generated by motor 306 is directly transmitted to the lower drive wheel 304, causing it to rotate. The two drive wheels 304 are fitted with the same drive belt 305, and adjacent drive wheels 304 are connected by the drive belt 305. Therefore, when the lower drive wheel 304 rotates, it can drive the upper drive wheel 304 to rotate synchronously with the help of the drive belt 305. Rotating rods 302 are fixedly connected to the right ends of the two drive wheels 304 respectively. The rotation of the transmission wheel 304 drives the rotating rod 302 to rotate together. The left end of the rotating rod 302 passes through the right side of the screening box 1, and a cam 303 is fixedly connected to its outer wall. As the rotating rod 302 rotates, the cam 303 also rotates and continuously strikes the corresponding inclined screen plate 201. During the screening of polypeptide powder, the inclined screen plate 201 is easily blocked by the accumulation of polypeptide powder or impurities, which affects the screening effect. The regular striking of the inclined screen plate 201 by the cam 303 can make the screen plate vibrate, effectively preventing the screen holes from being blocked and ensuring the efficient and continuous operation of polypeptide powder screening.
[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A polypeptide powder screening device, comprising a screening box (1), characterized in that: A support plate (4) is fixedly connected to the top right side of the screening box (1). A feeding mechanism (5) is provided on the top of the support plate (4). A screening mechanism (2) is provided on the inner wall of the screening box (1). A vibration mechanism (3) is provided in the middle of the right side of the outer wall of the screening box (1). A collection component (6) is provided at the bottom of the screening box (1). The screening mechanism (2) includes two inclined screen plates (201). The outer walls of the two inclined screen plates (201) are respectively fixedly connected to the upper and lower sides of the inner wall of the screening box (1). A baffle (202) is fixedly connected to the top left side of the two inclined screen plates (201). A discharge port (203) is opened on the upper and lower sides of the left end of the outer wall of the screening box (1). An inclined tube (204) is fixedly connected to the upper and lower sides of the left end of the outer wall of the screening box (1). An inclined tube (205) is connected to the front end of the two inclined tubes (204). A collection box (206) is connected to the bottom end of the two inclined tubes (205). A drawer (207) is slidably connected to the right side of the inner wall of the two collection boxes (206).
2. The polypeptide powder screening device according to claim 1, characterized in that: The vibration mechanism (3) includes a fixed base (301). The left side of the outer wall of the fixed base (301) is fixedly connected to the middle of the right side of the outer wall of the screening box (1). Rotating rods (302) are rotatably connected to the upper and lower sides of the right side of the outer wall of the screening box (1). The left ends of the two rotating rods (302) pass through the right side of the screening box (1). Cams (303) are fixedly connected to the outer walls of the two rotating rods (302). Transmission wheels (304) are fixedly connected to the right ends of the two rotating rods (302). The same transmission belt (305) is provided on the outer side of the two transmission wheels (304). The two adjacent transmission wheels (304) are connected by transmission belt (305). A motor (306) is fixedly connected to the top of the fixed base (301). The output end of the motor (306) is fixedly connected to the bottom transmission wheel (304).
3. The polypeptide powder screening device according to claim 1, characterized in that: The feeding mechanism (5) includes a support frame (501), the bottom of which is fixedly connected to the top center of the support plate (4), a screw conveyor (502) is fixedly connected to the top left side of the support frame (501), a motor (503) is fixedly connected to the top right side of the support frame (501), a funnel (504) is fixedly connected to the top right side of the screw conveyor (502), and a flow equalization component (505) is provided on the left side of the screw conveyor (502).
4. The polypeptide powder screening device according to claim 3, characterized in that: The flow equalization assembly (505) includes a connecting pipe (5051), the right end of which is connected to the left end of the screw conveyor (502), and the left end of which is connected to a flow equalization plate (5052). Multiple guide plates (5053) are fixedly connected to the bottom front and rear sides of the inner wall of the flow equalization plate (5052).
5. The polypeptide powder screening device according to claim 1, characterized in that: The collection component (6) includes a collection frame (601), and a groove (602) is provided at the bottom of the screening box (1). The collection frame (601) is slidably connected to the groove (602), and a handle (603) is fixedly connected to the front side of the outer wall of the collection frame (601).
6. The polypeptide powder screening device according to claim 1, characterized in that: Two limiting grooves (7) are provided on the front and back sides of the inner walls of the two collection boxes (206), and two slide bars (8) are fixedly connected to the front and back sides of the outer walls of the two drawers (207). The slide bars (8) are slidably connected to the corresponding limiting grooves (7).
7. The polypeptide powder screening device according to claim 1, characterized in that: The screening box (1) is fixedly connected to four corners at the bottom, and positioning holes (10) are opened in the middle of each of the multiple feet (9).
8. The polypeptide powder screening device according to claim 5, characterized in that: The bottom left and right sides of the collection box (601) are fixedly connected to two mounting strips (11), and multiple rotating rollers (12) are rotatably connected between adjacent mounting strips (11). The bottom left and right sides of the groove (602) are provided with sliding grooves (13), and the multiple rotating rollers (12) are slidably connected to the corresponding sliding grooves (13).