Sealed coaxial bidirectional spiral vacuum discharge hopper
The design of the sealed coaxial bidirectional spiral vacuum discharge hopper solves the problem of conveying solid powder materials in pharmaceutical production, achieving efficient and sterile material conveying and preventing blockages, thus meeting GMP standards.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG LUXIN DESIGN ENG
- Filing Date
- 2025-08-29
- Publication Date
- 2026-06-30
AI Technical Summary
In the production process of pharmaceutical companies, solid powder materials are highly viscous and have poor flowability due to the presence of moisture or solvents. They are prone to clumping and clogging conveying equipment and pipelines. They also have high requirements for moisture-proof and oxidation-proof. Existing vacuum pumping methods cannot convey them smoothly and the clumped materials cannot be completely discharged.
It adopts a closed coaxial bidirectional spiral vacuum discharge bin, which uses a bidirectional spiral conveying method of axial rotation and radial pushing, combined with vibrating air hammers to prevent material agglomeration, and uses a vacuum system to extract the material.
It enables efficient transport of materials containing moisture or solvents, prevents clumping and blockage, ensures smooth material discharge, and meets the sterile environment requirements of GMP standards.
Smart Images
Figure CN224429485U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of conveying technology, specifically a sealed coaxial bidirectional spiral vacuum discharge bin. Background Technology
[0002] In the pharmaceutical manufacturing process, the solid powder materials discharged from equipment such as centrifuges and mixers during the reaction process contain moisture or solvents, resulting in high viscosity, strong adhesion, poor flowability, and a tendency to clump and clog conveying equipment and pipelines, thus increasing the difficulty of material transportation. Especially when producing according to GMP standards, the materials have high requirements for moisture and oxidation prevention, and the influence of external air and moisture factors must be strictly controlled during the discharge process.
[0003] Currently, vacuum transfer is used to transport materials, which can ensure a sterile environment for the products, reduce the contamination of materials by various bacteria, and reduce the dust from the materials. Therefore, it improves the working environment and enhances production safety and environmental protection.
[0004] However, the conventional vacuum transfer method for conveying materials still has the following shortcomings:
[0005] 1. It cannot smoothly transport materials containing moisture or solvents;
[0006] 2. Clumped materials can clog conveying equipment, preventing the materials from being completely discharged. Utility Model Content
[0007] In order to solve the technical problems existing in the background art, this utility model provides a closed coaxial bidirectional spiral vacuum discharge bin, which can transport materials containing moisture or solvents and prevent materials from blocking the conveying equipment and pipelines.
[0008] The technical solution adopted by this utility model is:
[0009] A sealed, coaxial, bidirectional spiral vacuum discharge chamber includes:
[0010] The upper and lower chambers are interconnected. The lower end of the lower chamber is connected to a conveying trough. Supports are provided at both ends of the conveying trough. A reducer is fixed and sealed on one of the support seats on one side of the conveying trough. A drive motor is driven through the reducer. A connecting box is connected in the middle of the conveying trough. An air inlet and a material outlet are connected to the connecting box. The material outlet is connected to the pipeline of the vacuum system. A spiral sleeve connected to the reducer is rotatably housed inside the conveying trough. Spiral wings are wound around the spiral sleeve. Two sets of spiral wings are arranged in opposite directions. The connecting box is located between the two sets of spiral wings.
[0011] Furthermore, the upper chamber is configured as a box shape with a closed upper end and an open lower end, and the upper end of the upper chamber is connected to a material inlet, a manual cleaning port, a viewing port, a sight glass light port, and an exhaust port.
[0012] Furthermore, a feeding valve is provided at the material inlet in a sealed manner.
[0013] Furthermore, an exhaust filter is connected to the exhaust port.
[0014] Furthermore, the viewing port and the viewing mirror light port are located on the same side of the upper compartment.
[0015] Furthermore, the lower chamber is configured with an opening at the top, and the two side walls of the lower chamber are configured to slope from top to bottom towards the center, with a vibrating air hammer connected to the compressed air system pipeline fixedly installed on the outside of the sloped side walls.
[0016] Furthermore, a limiting slide rod is provided protruding from the inner wall of the conveying groove at the support seat.
[0017] Furthermore, the power shaft of the reducer extends into the conveying trough, and both ends of the power shaft of the reducer are provided with rotatable sealing connections to the support base.
[0018] Furthermore, a positioning pin is provided on the outer wall of the power shaft of the reducer, protruding axially.
[0019] The inner wall of the spiral bushing is provided with a positioning groove that is slidably connected to the positioning pin groove. The positioning groove is slidably connected to the positioning pin.
[0020] Furthermore, each end of the spiral bushing is provided with a sliding groove, and a limiting slide rod is slidably accommodated in the sliding groove.
[0021] The beneficial effects of this novel sealed coaxial bidirectional spiral vacuum discharge hopper are as follows:
[0022] 1. Through a bidirectional spiral conveying method of axial rotation and radial displacement, materials containing moisture or solvents can be conveyed while ensuring material conveying efficiency.
[0023] 2. By using a screw conveyor and a vibrating air hammer, material agglomeration is prevented from clogging the conveying equipment and pipelines. Attached Figure Description
[0024] Figure 1 This is a front view schematic diagram of an embodiment of this utility model;
[0025] Figure 2 This is a side view of an embodiment of this utility model;
[0026] Figure 3 This is a top view of an embodiment of this utility model;
[0027] Figure 4 This is a partially enlarged schematic diagram of the present invention.
[0028] In the picture:
[0029] 10. Upper hopper body; 11. Lower hopper body; 12. Conveying trough; 13. Support base; 14. Connecting box; 151. Material inlet; 152. Manual cleaning port; 153. Sight port; 154. Sight glass light port; 155. Exhaust port; 156. Exhaust filter; 16. Vibrating hammer; 17. Make-up air inlet; 18. Material outlet; 19. Limiting rod.
[0030] 21. Drive motor; 22. Reducer;
[0031] 30. Spiral bushing; 31. Spiral fin; 32. Positioning groove; 33. Groove. Detailed Implementation
[0032] To more clearly and explicitly illustrate the specific implementation objectives and methods of this utility model, the technical solution of this utility model will be fully described below. The described embodiments are only some embodiments of this utility model, not all embodiments. Without creative effort, all other embodiments based on the described embodiments of this utility model are within the protection scope of this utility model.
[0033] This utility model relates to a sealed, coaxial, bidirectional spiral vacuum discharge hopper, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it includes: an upper compartment 10 and a lower compartment 11 that are interconnected.
[0034] The upper chamber 10 is configured as a box shape with a closed upper end and an open lower end. The upper end of the upper chamber 10 is connected to a material inlet 151, a manual cleaning port 152, a viewing port 153, a sight glass light port 154, and an exhaust port 155. The material inlet 151 is sealed and connected to a feeding valve. The viewing port 153 and the sight glass light port 154 are located on the same side of the upper chamber 10. The exhaust port 155 is connected to an exhaust filter 156.
[0035] The lower chamber 11 is designed with an open top, and its two side walls are inclined from top to bottom towards the center. A vibrating air hammer 16, connected to a compressed air system pipeline, is fixedly installed on the outside of the inclined side walls. A conveying trough 12 is connected to the lower end of the lower chamber 11. Support seats 13 are respectively installed at both ends of the conveying trough 12. A reducer 22 is fixedly and sealed on one side of the support seat 13. A drive motor 21 is driven onto the reducer 22 and is electrically connected to a frequency converter system. The power shaft of the reducer 22 extends into the conveying trough 12. Both ends of the power shaft of the reducer 22 are rotatably and sealed to the support seat 13. A positioning pin protrudes axially from the outer wall of the power shaft of the reducer 22. A limit rod 19 protrudes from the inner wall of the conveying trough 12 at the support seat 13. A rotating housing for the reducer 22 is provided within the conveying trough 12. The reducer 22 is connected to a spiral sleeve 30. Spiral wings 31 are wound around the outside of the spiral sleeve 30. Two sets of spiral wings 31 are arranged in opposite directions. A connecting box 14 is connected in the middle of the conveying groove 12 between the two sets of spiral wings 31. An air inlet 17 and a material outlet 18 are connected to the connecting box 14. An air filter is connected to the air inlet 17. The material outlet 18 is connected to the pipeline of the vacuum system. A positioning groove 32 protrudes from the inner wall of the spiral sleeve 30 and slides in a positioning pin groove. The positioning groove 32 is slidably connected to the positioning pin. Slide grooves 33 are provided at both ends of the spiral sleeve 30. A limiting slide rod 19 slides within the slide groove 33, thereby causing the power shaft of the reducer 22 to drive the spiral sleeve 30 to rotate coaxially. Simultaneously, the spiral sleeve 30 slides axially outside the power shaft of the reducer 22.
[0036] Based on the specific structure of the sealed coaxial bidirectional spiral vacuum discharge chamber in the above embodiments, its working process will be further explained below:
[0037] A. Spiral feeding:
[0038] The material entering the upper chamber 10 and lower chamber 11 from the material inlet 151 is controlled by the feeding valve. After the material supply is completed, the feeding valve is closed.
[0039] Due to its own weight, the material falls into the conveying trough 12. The drive motor 21 starts and drives the spiral sleeve 30 to rotate through the transmission of the reducer 22, so that the material in the conveying trough 12 is conveyed into the connecting box 14.
[0040] During the rotation of the spiral sleeve 30, the limiting slide rod 19 slides in the slide groove 33, thereby causing the spiral fins 31 on the outer wall of the spiral sleeve 30 to move radially along the power shaft of the reducer 22 when rotating axially, thus improving the efficiency of material being transported from the conveying trough 12 to the connecting box 14.
[0041] The material is prevented from accumulating inside the lower silo 11 by striking the two side walls of the lower silo 11 with the vibrating hammer 16.
[0042] B. Vacuum discharge:
[0043] Under the negative pressure of the vacuum system, outside air is discharged sequentially through the air inlet 17, the connecting box 14, and the material outlet 18, so that the material conveyed from the conveying trough 12 to the connecting box 14 is quickly drawn away.
[0044] In summary, the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Based on the above description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification. All equivalent variations and modifications of the shape, structure, features, and spirit described in the claims of this utility model should be included within the scope of the claims of this utility model.
Claims
1. A sealed, coaxial, bidirectional spiral vacuum discharge bin, characterized in that: include: The upper chamber (10) and lower chamber (11) are interconnected. The lower end of the lower chamber (11) is connected to a conveying trough (12). Support seats (13) are respectively provided at both ends of the conveying trough (12). A reducer (22) is fixed and sealed on the support seat (13) on one side of the conveying trough (12). A drive motor (21) is driven on the reducer (22). A connecting box (14) is connected in the middle of the conveying trough (12). An air inlet (17) and a material outlet (18) are connected on the connecting box (14). The material outlet (18) is connected to the pipeline of the vacuum system. A spiral sleeve (30) connected to the reducer (22) is rotatably housed in the conveying trough (12). Spiral wings (31) are wound around the outside of the spiral sleeve (30). Two sets of spiral wings (31) are arranged in opposite directions. The connecting box (14) is located between the two sets of spiral wings (31).
2. The sealed coaxial bidirectional spiral vacuum discharge bin according to claim 1, characterized in that: The upper chamber (10) is a box-shaped structure with a closed upper end and an open lower end. The upper end of the upper chamber (10) is connected to a material inlet (151), a manual cleaning port (152), a viewing port (153), a viewing mirror light port (154), and an exhaust port (155).
3. The sealed coaxial bidirectional spiral vacuum discharge bin according to claim 2, characterized in that: The material inlet (151) is sealed and connected to a feeding valve.
4. The sealed coaxial bidirectional spiral vacuum discharge bin according to claim 2, characterized in that: An exhaust filter (156) is connected to the exhaust port (155).
5. The sealed coaxial bidirectional spiral vacuum discharge bin according to claim 4, characterized in that: The viewing port (153) and the viewing mirror light port (154) are located on the same side of the upper compartment (10).
6. The sealed coaxial bidirectional spiral vacuum discharge bin according to claim 1, 2, 3, 4, or 5, characterized in that: The lower chamber (11) is configured to have an opening at the top, and the two side walls of the lower chamber (11) are configured to be inclined from top to bottom towards the center. A vibrating air hammer (16) connected to the compressed air system pipeline is fixedly installed on the outside of the inclined side wall.
7. The sealed coaxial bidirectional spiral vacuum discharge bin according to claim 6, characterized in that: A limiting slide rod (19) is provided protruding from the inner wall of the conveying groove (12) at the support base (13).
8. The sealed coaxial bidirectional spiral vacuum discharge bin according to claim 7, characterized in that: The power shaft of the reducer (22) extends into the conveying groove (12), and both ends of the power shaft of the reducer (22) are provided with a rotary sealing connection with the support base (13).
9. The sealed coaxial bidirectional spiral vacuum discharge bin according to claim 8, characterized in that: A positioning pin is provided on the outer wall of the power shaft of the reducer (22) along the axial direction; The inner wall of the spiral bushing (30) is provided with a positioning groove (32) that is slidably connected to the positioning pin groove. The positioning groove (32) is slidably connected to the positioning pin.
10. The sealed coaxial bidirectional spiral vacuum discharge bin according to claim 9, characterized in that: The spiral bushing (30) is provided with a sliding groove (33) at both ends, and a limiting slide rod (19) is slidably accommodated in the sliding groove (33).