Raw material feeding mechanism for bag production
By using dynamic shearing and infrared heating in the raw material feeding mechanism for FIBC production, the problems of insufficient heat penetration and overheating in traditional hot air drying systems are solved, achieving uniform mixing and thorough drying of raw materials.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING KERUIFEI PACKAGING TECHNOLOGY CO LTD
- Filing Date
- 2025-08-13
- Publication Date
- 2026-06-26
AI Technical Summary
In traditional single-channel hot air drying systems, the unidirectional linear flow of hot air leads to insufficient heat penetration in the central area, overheating of raw materials at the air inlet, and insufficient drying of raw materials in the middle and rear of the channel and the central area.
The raw material supply mechanism for FIBC production includes a drying chamber, a mixing container, a raw material dispersion mechanism, and a heating and dehumidification unit. It breaks up agglomerated raw materials through dynamic shearing and uses infrared heating lamps for uniform heating and moisture removal.
It achieves uniform mixing and continuous conveying of raw materials, improves drying effect, solves the problems of insufficient heat penetration and overheating, and ensures that raw materials are fully dried.
Smart Images
Figure CN224415534U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of FIBC (Flexible Intermediate Bulk Container) production, and in particular to a raw material supply mechanism for FIBC production. Background Technology
[0002] In a traditional single-channel hot air drying system, hot air flows in a unidirectional straight line, thus forming a significant temperature gradient. The temperature of the hot air can reach 120°C when it enters from the air inlet. However, as the hot air continues to flow in the channel, heat is constantly dissipated, and the temperature drops to 80°C when it reaches the air outlet.
[0003] This hot air flow pattern has a defect: because the hot air only moves in a straight line in one direction, the flow of hot air is relatively slow in the central area of the channel, and the heat cannot penetrate fully. The raw materials near the air inlet will be overheated due to the local high temperature, while the raw materials located in the middle and rear of the channel, especially in the central area, cannot obtain enough heat for effective drying due to insufficient heat penetration. Utility Model Content
[0004] To overcome the problems caused by insufficient heat penetration in the central area due to the traditional unidirectional straight flow of hot air, resulting in overheating of raw materials at the air inlet and insufficient drying of raw materials in the middle and rear of the channel.
[0005] The technical solution of this utility model is as follows: a raw material feeding mechanism for the production of bulk bags, including a drying chamber connected to the feed inlet of a screw conveyor. The top of the drying chamber extends integrally to form a stirring container, which consists of a vertical stirring chamber and a conical guide chamber connected to its bottom. An external feeding channel is provided through the side wall of the vertical stirring chamber. A material receiving hopper is provided at the input end of the feeding channel, and the output end of the feeding channel extends into the vertical stirring chamber. An axially rotating raw material dispersion mechanism is provided inside the vertical stirring chamber. The raw material dispersion mechanism breaks up the agglomerated raw material into a discrete state through dynamic shearing. A guide component is fixed to the inner wall of the vertical stirring chamber, and its inclined surface extends to the inlet of the conical guide chamber, allowing the dispersed raw material to enter the conical guide chamber. The lower part of the conical guide chamber is connected to the inner cavity of the drying chamber, and a raw material falling channel is formed at the connection. A heating and dehumidification unit is provided inside the drying chamber to continuously remove moisture from the raw material during the falling process. A discharge port is provided at the bottom of the drying chamber. The discharge port is directionally connected to the feed port of the screw conveyor through a sealing flange structure.
[0006] Preferably, the raw material dispersion mechanism includes a servo motor disposed on the upper part of the vertical stirring chamber, the output shaft of the servo motor is connected to a stirring shaft, and a stirring rod is fixedly attached to the outer wall of the stirring shaft around the perimeter, the stirring rod being distributed along the axial direction of the stirring shaft.
[0007] Preferably, a main shaft connected to the end of the stirring shaft is provided inside the conical guide cavity, and spiral blades are provided on the outer wall of the main shaft. The stirring shaft drives the main shaft to rotate, and drives the spiral blades to transport the raw materials into the drying chamber.
[0008] Preferably, the heating and dehumidifying unit includes a retaining ring installed on the inner wall of the drying chamber, an infrared heating lamp detachably installed inside the retaining ring, the infrared heating lamp being powered by an external power source, and a partition plate installed at the bottom of the drying chamber, with glass embedded in the partition plate.
[0009] Preferably, a spring is installed in the space enclosed by the partition, and a receiving plate is fixed to the extension end of the spring. When the raw material falls onto the receiving plate, it is subjected to the action of the spring and bounces inside the drying chamber.
[0010] Preferably, the outer wall of the drying chamber is equipped with a double-layer hollow glass observation window for monitoring the dispersion state of the raw materials, and the edges of the observation window are sealed with silicone.
[0011] Preferably, the inlet of the material receiving hopper is hinged with an openable dust cover, and the edge of the dust cover is fitted with a sealing strip.
[0012] The beneficial effects of this utility model are:
[0013] In processing agglomerated raw materials, the raw material dispersion mechanism generates dynamic shearing force, which can effectively break up agglomerated raw materials into discrete small particles. At the same time, the spiral blades can evenly transport the raw materials to the drying chamber. In terms of drying, the heating and dehumidification unit uses infrared heating lamps, which have fast heating speed, high thermal efficiency and uniform heating. Combined with the jumping of the receiving plate under the action of spring, the raw materials are fully heated, which greatly improves the drying effect. Attached Figure Description
[0014] Figure 1 A schematic diagram of one embodiment of the raw material supply mechanism for producing container bags according to this utility model;
[0015] Figure 2 The diagram shown is a front view of this utility model;
[0016] Figure 3 What is shown is Figure 2 A sectional view;
[0017] Figure 4 What is shown is Figure 1 Schematic diagram of the structure of the drying chamber;
[0018] Figure 5 What is shown is Figure 4 A sectional view.
[0019] Explanation of reference numerals in the attached drawings: 1. Drying chamber; 2. Vertical stirring chamber; 3. Conical guide chamber; 4. Feeding channel; 5. Material receiving hopper; 6. Guide component; 7. Discharge interface; 8. Servo motor; 9. Stirring shaft; 10. Stirring rod; 11. Main shaft; 12. Spiral blade; 13. Snap ring; 14. Infrared heating lamp; 15. Enclosure plate; 16. Spring; 17. Receiving plate; 18. Observation window; 19. Dustproof cover. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0021] Please see Figure 1 - Figure 5This utility model provides an embodiment of a raw material feeding mechanism for bulk bag production, including a drying chamber 1 connected to the feed inlet of a screw conveyor. An integrally formed mixing container extends from the top of the drying chamber 1. The mixing container consists of a vertical mixing chamber 2 and a conical guide chamber 3 connected to its bottom. An external feeding channel 4 is provided through the side wall of the vertical mixing chamber 2. A material receiving hopper 5 is provided at the input end of the feeding channel 4, and the output end of the feeding channel 4 extends into the vertical mixing chamber 2. An axially rotating raw material dispersion mechanism is provided inside the vertical mixing chamber 2. The raw material dispersion mechanism breaks up agglomerated raw materials into discrete pieces through dynamic shearing. A guide member 6 is fixed to the inner wall of the vertical mixing chamber 2, and its inclined surface extends to the inlet of the conical guide chamber 3, allowing the dispersed raw material to enter. The conical guide cavity 3 is connected to the inner cavity of the drying chamber 1 at its lower part, forming a raw material falling channel at the connection. The drying chamber 1 is equipped with a heating and dehumidification unit to continuously remove moisture from the raw materials during the falling process. The bottom of the drying chamber 1 is equipped with a discharge port 7, which is directionally connected to the feed port of the screw conveyor through a sealing flange structure. The drying chamber 1 provides the space and environment required for drying the raw materials. The integrated stirring container at its top organically combines the stirring and drying functions, reducing the equipment's footprint. The stirring container consists of a vertical stirring chamber 2 and a conical guide cavity 3 connected to its bottom. This structural design facilitates the stirring, dispersion, and falling of the raw materials. The side wall of the vertical stirring chamber 2 is provided with an external feed port. The feeding channel 4 is the channel through which raw materials enter the mixing container. The material receiving hopper 5 at the input end of the feeding channel 4 serves to receive and temporarily store the raw materials, facilitating the operator to add the raw materials to the feeding mechanism and ensuring that the raw materials smoothly enter the feeding channel 4 and are transported into the vertical mixing chamber 2. When the raw material dispersing mechanism rotates, its mixing part applies a dynamic shearing force to the raw materials entering the vertical mixing chamber 2. This shearing force can break the binding force between agglomerated raw materials, shearing and crushing large agglomerated raw materials into discrete small particles, making the raw materials more uniform and facilitating subsequent drying and conveying operations. The function of the guide component 6 is to guide the raw materials dispersed by the raw material dispersing mechanism to the conical guide cavity 3. Through the inclined design of the guide component 6, the raw materials can flow along... The material slides smoothly down the inclined plane and enters the conical guide cavity 3, avoiding the accumulation and residue of raw materials in the vertical mixing cavity 2. The design of the conical guide cavity 3 allows the raw materials to be further concentrated and guided before entering the falling channel, ensuring that the raw materials can accurately enter the inner cavity of the drying chamber 1 for drying. The heating and dehumidification unit can continuously remove moisture from the raw materials during the falling process through infrared heating. When the raw materials pass through the raw material falling channel, the heat generated by the heating and dehumidification unit will evaporate the moisture in the raw materials, thereby achieving the purpose of drying the raw materials. The unloading interface 7 set at the bottom of the drying chamber 1 is the outlet for the raw materials to be transported from the drying chamber 1 to the screw conveyor. Through this directional docking method, the raw materials can accurately enter the screw conveyor, realizing the continuous feeding of raw materials.
[0022] Please see Figure 3 In this embodiment, the raw material dispersion mechanism includes a servo motor 8 disposed on the upper part of the vertical stirring chamber 2. The output shaft of the servo motor 8 is connected to a stirring shaft 9. A stirring rod 10 is fixedly attached to the outer wall of the stirring shaft 9, and the stirring rod 10 is distributed along the axial direction of the stirring shaft 9. A main shaft 11 connected to the end of the stirring shaft 9 is disposed in the conical guide cavity 3. A spiral blade 12 is disposed on the outer wall of the main shaft 11. The stirring shaft 9 drives the main shaft 11 to rotate, thereby driving the spiral blade 12 to transport the raw material into the drying chamber 1. The servo motor 8 serves as the power source for the raw material dispersion mechanism, and it can precisely control the speed, direction, and rotation time of the output shaft. Upon startup, the stirring shaft 9 rotates, providing power for subsequent stirring and raw material conveying. As the stirring shaft 9 rotates, the stirring rod 10 rotates along with it, stirring the raw materials in the vertical stirring chamber 2. The rotation of the stirring rod 10 generates dynamic shearing force, breaking up clumps of raw materials into discrete pieces, making the raw materials more uniform and facilitating subsequent drying and conveying operations. The stirring shaft 9 drives the main shaft 11 to rotate, and the rotation of the spiral blades 12 generates downward conveying force, conveying the stirred and dispersed raw materials from the conical guide chamber 3 to the drying chamber 1, achieving continuous conveying of raw materials and ensuring the normal operation of the feeding mechanism.
[0023] Please see Figure 1 , Figure 4 and Figure 5In this embodiment, the heating and dehumidification unit includes a retaining ring 13 disposed on the inner wall of the drying chamber 1. An infrared heating lamp 14 is detachably installed inside the retaining ring 13. The infrared heating lamp 14 is powered by an external power source. A surrounding plate 15 is provided at the bottom of the drying chamber 1. Glass is embedded in the surrounding plate 15. A spring 16 is provided in the space enclosed by the surrounding plate 15. A receiving plate 17 is fixedly connected to the extension end of the spring 16. When the raw material falls onto the receiving plate 17, it bounces inside the drying chamber 1 due to the action of the spring 16. The outer wall of the drying chamber 1 is provided with... A double-glazed observation window 18 is provided for monitoring the dispersion state of the raw materials. The edges of the observation window 18 are sealed with silicone. An openable dust cover 19 is hinged at the entrance of the material receiving hopper 5. Sealing strips are embedded along the edges of the dust cover 19. A retaining ring 13 provides an installation and fixing position for the infrared heating lamp 14. The infrared heating lamp 14 is powered by an external power source. When the infrared heating lamp 14 is powered on, it emits infrared radiation heat to strip moisture from the raw materials during the falling process. Infrared heating has the advantages of fast heating speed... With advantages such as high thermal efficiency and uniform heating, it can effectively remove moisture from raw materials, ensuring that the raw materials meet the requirements of FIBC production. At the same time, the detachable installation design of the retaining ring 13 facilitates the replacement and maintenance of the infrared heating lamp 14. When the raw materials fall from the conical guide cavity 3 onto the receiving plate 17, due to the elasticity of the spring 16, the receiving plate 17 will bounce up and down under the impact of the raw materials. During the bouncing process of the receiving plate 17, the raw materials will continuously come into contact with the air, increasing the heating area and further improving the drying effect. The double-layer hollow glass has good heat insulation and sound insulation performance, which can reduce heat transfer and external noise interference, while ensuring the clarity of the observation window 18. Operators can observe the dispersion of raw materials in the drying chamber 1 in real time through the observation window 18. The openable dust cover 19 can be closed when no raw materials are added to prevent external dust, debris, etc. from entering the material receiving hopper 5 and the mixing container, ensuring the cleanliness of the raw materials. When raw materials need to be added, the operator can open the dust cover 19 and pour the raw materials into the material receiving hopper 5.
[0024] Working principle: The operator first opens the hinged dust cover 19 at the inlet of the material receiving hopper 5 and pours the raw materials for the production of the container bags into the material receiving hopper 5. The material receiving hopper 5 serves to receive and temporarily store the raw materials, ensuring that the raw materials can smoothly enter the external feeding channel 4 set on the side wall of the vertical mixing chamber 2 and then be transported into the vertical mixing chamber 2.
[0025] When the raw material enters the vertical mixing chamber 2, the servo motor 8 located on the upper part of the vertical mixing chamber 2 is started. The servo motor 8 serves as the power source for the raw material dispersion mechanism and can precisely control the speed, direction and rotation time of the output shaft. When the servo motor 8 starts, it drives the mixing shaft 9 connected to its output shaft to rotate. The outer wall of the mixing shaft 9 is fixed with mixing rods 10 distributed along its axis. When the mixing shaft 9 rotates, the mixing rods 10 rotate together to stir the raw material in the vertical mixing chamber 2. The rotation of the mixing rods 10 generates dynamic shearing force. This force can break the binding force between the agglomerated raw materials, shear and break large agglomerated raw materials into discrete small particles, making the raw materials more uniform.
[0026] After being stirred and dispersed, the raw materials slide smoothly down the inclined surface of the guide 6 fixed to the inner wall of the vertical stirring chamber 2, guided to the conical guide chamber 3. The design of the conical guide chamber 3 allows the raw materials to be further concentrated and guided before entering the falling channel. At the same time, the stirring shaft 9 drives the main shaft 11 connected to the end of the stirring shaft 9 to rotate. The outer wall of the main shaft 11 is provided with spiral blades 12. The rotation of the spiral blades 12 generates a downward conveying force, which transports the stirred and dispersed raw materials from the conical guide chamber 3 through the raw material falling channel to the drying chamber 1, realizing the continuous conveying of raw materials.
[0027] After the raw materials enter the drying chamber 1 through the raw material falling channel, the infrared heating lamp 14 is powered by an external power source. When powered on, it emits infrared radiation heat to remove moisture from the raw materials during the falling process. Infrared heating has the advantages of fast heating speed, high thermal efficiency, and uniform heating, which can effectively remove moisture from the raw materials. At the same time, the raw materials fall onto the receiving plate 17 in the space enclosed by the glass embedded in the bottom panel 15 of the drying chamber 1. Due to the elasticity of the spring 16 inside the panel 15, the receiving plate 17 will bounce up and down under the impact of the raw materials. During the bouncing process of the receiving plate 17, the raw materials will continuously come into contact with the air, increasing the heating area and further improving the drying effect.
[0028] After the raw materials are dried, they can accurately enter the screw conveyor through the unloading interface 7 at the bottom of the drying chamber 1, so as to realize the continuous feeding of raw materials and enter the subsequent FIBC production process.
[0029] Through the above steps, the dynamic shearing force generated by the raw material dispersion mechanism can effectively break up agglomerated raw materials into discrete small particles. In addition, the spiral blades 12 can uniformly transport the raw materials to the drying chamber 1. The infrared heating lamps 14 of the heating and dehumidification unit heat up quickly, efficiently and evenly. In addition, the receiving plate 17 bounces under the action of the spring 16 to ensure that the raw materials are fully heated, which greatly improves the drying effect. This solves the problem that the traditional hot air flows in a unidirectional straight line, resulting in insufficient heat penetration in the central area, overheating of raw materials at the air inlet, and insufficient drying of raw materials in the middle and rear of the channel and the center.
Claims
1. A raw material supply mechanism for the production of FIBCs (Flexible Intermediate Bulk Containers), characterized in that: The drying chamber (1) is connected to the feed inlet of the screw conveyor. The top of the drying chamber (1) extends integrally to form a stirring container. The stirring container consists of a vertical stirring chamber (2) and a conical guide chamber (3) connected to its bottom. An external feeding channel (4) is provided through the side wall of the vertical stirring chamber (2). A material receiving hopper (5) is provided at the input end of the feeding channel (4). The output end of the feeding channel (4) extends into the vertical stirring chamber (2). An axially rotating raw material dispersion mechanism is provided inside the vertical stirring chamber (2). The raw material dispersion mechanism causes the agglomerated raw material to be dispersed through dynamic shearing action. The material is crushed into a discrete state. A guide (6) is fixed to the inner wall of the vertical stirring chamber (2). Its inclined surface extends to the inlet of the conical guide chamber (3), allowing the dispersed material to enter the conical guide chamber (3). The lower part of the conical guide chamber (3) is connected to the inner cavity of the drying box (1), and a material falling channel is formed at the connection. The drying box (1) is equipped with a heating and dehumidification unit to continuously remove moisture from the material during the falling process. The bottom of the drying box (1) is equipped with a discharge interface (7). The discharge interface (7) is directionally connected to the feed port of the screw conveyor through a sealing flange structure.
2. The raw material supply mechanism for producing FIBCs (Flexible Intermediate Bulk Containers) according to claim 1, characterized in that: The raw material dispersion mechanism includes a servo motor (8) located on the upper part of the vertical stirring chamber (2). The output shaft of the servo motor (8) is connected to a stirring shaft (9). A stirring rod (10) is fixedly attached around the outer wall of the stirring shaft (9). The stirring rod (10) is distributed along the axial direction of the stirring shaft (9).
3. The raw material supply mechanism for producing FIBCs (Flexible Intermediate Bulk Containers) according to claim 2, characterized in that: The conical guide cavity (3) is equipped with a main shaft (11) connected to the end of the stirring shaft (9). The outer wall of the main shaft (11) is equipped with spiral blades (12). The stirring shaft (9) drives the main shaft (11) to rotate, and drives the spiral blades (12) to transport the raw materials into the drying chamber (1).
4. The raw material supply mechanism for producing FIBCs (Flexible Intermediate Bulk Containers) according to claim 3, characterized in that: The heating and dehumidification unit includes a retaining ring (13) set on the inner wall of the drying chamber (1). An infrared heating lamp (14) is detachably installed inside the retaining ring (13). The infrared heating lamp (14) is powered by an external power source. A partition (15) is set at the bottom of the drying chamber (1). Glass is embedded in the partition (15).
5. The raw material supply mechanism for producing FIBCs (Flexible Intermediate Bulk Containers) according to claim 4, characterized in that: A spring (16) is installed in the space enclosed by the partition (15). The extension end of the spring (16) is fixed to a receiving plate (17). When the raw material falls onto the receiving plate (17), it is subjected to the action of the spring (16) and bounces inside the drying chamber (1).
6. The raw material supply mechanism for producing FIBCs (Flexible Intermediate Bulk Containers) according to claim 5, characterized in that: The outer wall of the drying chamber (1) is provided with a double-layer hollow glass observation window (18) for monitoring the dispersion state of the raw materials. The edge of the observation window (18) is sealed with silicone.
7. The raw material supply mechanism for producing FIBCs (Flexible Intermediate Bulk Containers) according to claim 6, characterized in that: The material receiving hopper (5) is hinged to an openable dust cover (19) at its entrance, and the edges of the dust cover (19) are fitted with sealing strips.