A multi-stage variable speed feed device
Patent Information
- Application Number
- CN202521956843.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-09-11
AI Technical Summary
[0002]粉体包装过程中通常采用由螺旋送料器组成的送料装置将料仓中的物料送入包装袋中，现有的送料装置通常是由单独一个横向螺旋送料器或者一个横向螺旋送料器和一个纵向的螺旋送料器搭配将粉料从料仓内带到包装位置，但是在实际装料时，由于不同粉体流动性不同，因此在装料过程中为了保证装料效率，其装料速度差别过大，单个横向螺旋送料器只能通过调节转速去适应，这样就导致流动性差的材料包装效率很差，而流动性好的材料在包装袋装料的最后阶段，为了保证足秤，往往会有较多物料进入袋中，不但影响包装后的一致性，而且增加了生产过程中的损耗
[0008]The beneficial effects of this utility model are as follows: This utility model optimizes the structure of the feeding device in existing powder packaging production lines. By using a combination of multiple transverse spiral feeders and one longitudinal spiral feeder, it achieves various bagging speeds, thereby meeting the packaging requirements of powders with different flowability. In the initial stage of bagging, multiple transverse spiral feeders can be opened simultaneously for efficient filling. In the final stage, the excess transverse spiral feeders can be closed to control the feeding speed, maximizing bagging accuracy and minimizing material loss. This effectively balances the efficiency and accuracy of the filling process, improving not only overall bagging efficiency but also post-bag quality consistency and reducing material loss.
Smart Images
Figure CN224767073U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of packaging machinery, and in particular to a multi-stage variable speed feeding device. Background Technology
[0002] In the powder packaging process, a feeding device consisting of a screw feeder is usually used to deliver the material from the hopper into the packaging bag. Existing feeding devices typically consist of a single transverse screw feeder or a combination of a transverse screw feeder and a longitudinal screw feeder to bring the powder from the hopper to the packaging position. However, in actual filling, due to the different flowability of different powders, the filling speed varies too much to ensure filling efficiency. A single transverse screw feeder can only adapt by adjusting its speed. This results in poor packaging efficiency for materials with poor flowability, while for materials with good flowability, in the final stage of bag filling, in order to ensure full weight, more material often enters the bag, which not only affects the consistency after packaging but also increases losses during the production process. Utility Model Content
[0003] The main technical problem solved by this utility model is to provide a multi-stage variable speed feeding device that can balance efficiency and precision in the packaging process and reduce process losses.
[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a multi-stage variable speed feeding device is provided, which is installed on a main frame and includes a hopper and a multi-stage screw feeder unit. The hopper is fixedly installed on the workbench at the top of the main frame. The multi-stage screw feeder unit consists of multiple horizontally arranged transverse screw feeders and a longitudinal screw feeder. Each transverse screw feeder includes a transverse feeding screw and a transverse drive motor. All transverse feeding screws are horizontally installed above the workbench. The corresponding transverse drive motors are fixed on motor bases arranged below the workbench of the main frame. The power output end of each transverse drive motor is connected to the power input end of the corresponding transverse feeding screw. The multiple transmission paths are spatially staggered. The longitudinal screw feeder includes a longitudinal drive motor, a longitudinal feeding cylinder, and a longitudinal feeding screw. The longitudinal feeding cylinder is fixedly connected to the lower part of the hopper through horizontal connecting pipes corresponding to multiple transverse screw feeders. All transverse feeding screws pass horizontally through the hopper and are connected to the longitudinal feeding cylinder through corresponding horizontal connecting pipes. The longitudinal feeding screw rotates inside the longitudinal feeding cylinder. The longitudinal drive motor is fixed to the top of the longitudinal feeding cylinder and is connected to the power input end of the longitudinal feeding screw through a reducer. A discharge cutting mechanism is also installed on the longitudinal feeding cylinder.
[0005] In a preferred embodiment of this utility model, an arch-breaking mechanism is also installed on the hopper. The arch-breaking mechanism includes an arch-breaking head, an adapter, a transmission rod, and an auxiliary positioning bracket. The adapter is installed on the hopper wall, and a sealing ring is installed between the adapter and the hopper wall. The inner side of the adapter is connected to the arch-breaking head, and the outer side is connected to one end of the transmission rod. The other end of the transmission rod is rotatably mounted on the auxiliary positioning bracket. A driven sprocket is installed on the shaft of the transmission rod, and one of the plurality of transverse screw feeders has a driving sprocket at its power input end that matches the driven sprocket. The auxiliary positioning bracket includes a base and support columns. The base is fixed to the workbench on the top of the main frame. There are two support columns, symmetrically fixed on both sides of the base. The two support columns are connected by a plurality of reinforcing plates, one of which is equipped with a rotary bearing seat. The end of the transmission rod is inserted into the rotary bearing seat. A protective cover is also installed on the top worktable of the main frame. The protective cover is installed based on the auxiliary positioning bracket, and the support columns are all fixed on the inner wall of the protective cover on the corresponding side.
[0006] In a preferred embodiment of this utility model, there are two transverse spiral feeders, which are arranged vertically in parallel. They are an upper spiral feeder and a lower spiral feeder. The diameter of the feeding screw of the upper spiral feeder is smaller than that of the feeding screw of the lower spiral feeder. The power input ends of the upper spiral feeder and the lower spiral feeder are staggered and then connected to the power output ends of the corresponding drive motors via belts.
[0007] In a preferred embodiment of this utility model, the discharge cutting mechanism includes a telescopic cylinder, a cylinder seat, a lever seat, a transmission lever, a longitudinal push rod, a door bracket, and a cutting door. The cylinder seat is fixed to the top of the longitudinal feeding cylinder. The telescopic cylinder is mounted on the cylinder seat. The lever seat is suspended in the middle of the cylinder seat. The transmission lever is rotatably mounted on the lever seat. One end of the transmission lever is connected to the top of the telescopic rod of the telescopic cylinder, and the other end is connected to the top of the longitudinal push rod. The other end of the longitudinal push rod passes through the longitudinal feeding cylinder and is fixedly connected to the cutting door through the door bracket. The diameter of the cutting door matches the discharge port diameter of the longitudinal feeding cylinder.
[0008] The beneficial effects of this utility model are as follows: This utility model optimizes the structure of the feeding device in existing powder packaging production lines. By using a combination of multiple transverse spiral feeders and one longitudinal spiral feeder, it achieves various bagging speeds, thereby meeting the packaging requirements of powders with different flowability. In the initial stage of bagging, multiple transverse spiral feeders can be opened simultaneously for efficient filling. In the final stage, the excess transverse spiral feeders can be closed to control the feeding speed, maximizing bagging accuracy and minimizing material loss. This effectively balances the efficiency and accuracy of the filling process, improving not only overall bagging efficiency but also post-bag quality consistency and reducing material loss. Attached Figure Description
[0009] Figure 1 This is a side view of a preferred embodiment of the present invention. Figure 2 This is a schematic diagram of the arch-breaking mechanism in the illustrated embodiment; Figure 3 This is a schematic diagram of the feeding and cutting mechanism in the illustrated embodiment; The components in the attached diagram are labeled as follows: 1. Hopper; 2. Protective cover; 3. Arch breaking mechanism; 4. Upper transverse feeding screw; 5. Lower transverse feeding screw; 6. Longitudinal feeding screw; 7. Loading and cutting mechanism; 8. Upper drive motor; 9. Lower drive motor; 10. Longitudinal drive motor; 11. Upper horizontal connecting pipe; 12. Lower horizontal connecting pipe; 13. Longitudinal feeding cylinder; 14. Main frame; 301. Arch breaker head; 302. Adapter; 303. Sealing ring; 304. Transmission rod; 305. Driven sprocket; 306. Rotary bearing seat; 307. Reinforcing plate; 308. Support column; 309. Base. 701. Telescopic cylinder, 702. Cylinder seat, 703. Lever seat, 704. Transmission lever, 705. Longitudinal push rod, 706. Door support, 707. Cut-off door. Detailed Implementation
[0010] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.
[0011] A multi-stage variable speed feeding device is mounted on a main frame 14 and includes a hopper 1 and a multi-stage screw feeder unit. The hopper 1 is fixedly mounted on a workbench at the top of the main frame 14. The multi-stage screw feeder unit consists of two horizontally arranged transverse screw feeders and one longitudinal screw feeder. The two transverse screw feeders are arranged parallel to each other above the workbench and are designated as an upper screw feeder and a lower screw feeder. The upper screw feeder includes an upper transverse feeding screw 4 and an upper transverse drive motor 8, and the lower screw feeder includes a lower transverse feeding screw 5 and a lower transverse drive motor 9. The diameter of the upper transverse feeding screw 4 is smaller than the diameter of the lower transverse feeding screw 5, typically half the diameter, which further improves the loading accuracy in the final stage. Both the upper transverse drive motor 8 and the lower transverse drive motor 9 are fixed on motor mounts located below the workbench of the main frame. The power output end of the upper transverse drive motor 8 is connected to the upper transverse feeding screw 4. The power input end and the power output end of the lower transverse drive motor 9 are both equipped with pulleys, which are connected by belt drives and their transmission paths are spatially offset from each other. The longitudinal screw feeder includes a longitudinal drive motor 10, a longitudinal feed cylinder 13, and a longitudinal feed screw 6. The longitudinal feed cylinder 13 is connected to the lower part of the hopper 1 by an upper horizontal connecting pipe 11 and a lower horizontal connecting pipe, which correspond to the upper and lower transverse screw feeders, respectively. 12. Fixed connection: The upper horizontal feeding screw 4 and the lower horizontal feeding screw 5 pass horizontally through the hopper 1 and are respectively connected to the longitudinal feeding cylinder 13 through the upper horizontal connecting pipe 11 and the lower horizontal connecting pipe 12. The longitudinal feeding screw 6 is installed in the longitudinal feeding cylinder 13. The longitudinal drive motor 10 is fixed at the top of the longitudinal feeding cylinder 13 and is connected to the power input end of the longitudinal feeding screw 6 through a reducer. The longitudinal feeding cylinder 13 is also equipped with a discharge cutting mechanism.
[0012] The hopper 1 is also equipped with an arch-breaking mechanism, which includes an arch-breaking head 301, an adapter 302, a transmission rod 304, and an auxiliary positioning bracket. The adapter 302 is installed on the hopper wall of the hopper 1, and a sealing ring 303 is installed between the adapter 302 and the hopper wall of the hopper 1. The inner side of the adapter 302 is connected to the arch-breaking head 301, and the outer side is connected to one end of the transmission rod 304. The other end of the transmission rod 304 is rotatably mounted on the auxiliary positioning bracket. A passive sprocket 305 is installed on the shaft of the transmission rod 304, and the power input end of the upper screw feeder is provided with an active sprocket that matches the passive sprocket 305. When the upper screw feeder is working, it will drive the transmission rod 304 to rotate, and the rotational action will be transmitted to the arch-breaking head 301 in the hopper 1 through the adapter 302, so that the arch-breaking head 301 rotates as a whole, thereby effectively preventing the problem of powder not being able to be discharged due to local voids during the conveying process.
[0013] The auxiliary positioning bracket includes a base 309 and support columns 308. The base 309 is fixed to the worktable on top of the main frame 14. There are two support columns 308, symmetrically fixed on both sides of the base 309. The two support columns 308 are connected by multiple reinforcing plates 307. The base 309, support columns 308, and reinforcing plates 307 are all made of angle steel welded together. A rotary bearing seat 306 is installed on one of the reinforcing plates 307, and the end of the transmission rod 304 is inserted into the rotary bearing seat 306. A protective cover plate 2 is also installed on the worktable on top of the main frame 14. The protective cover plate 2 is installed based on the auxiliary positioning bracket, and the support columns 308 are fixed to the inner wall of the protective cover plate 2 on the corresponding side. The purpose of setting up the auxiliary positioning bracket is, on the one hand, to serve as a support frame for the installation of the protective cover plate 2, and on the other hand, to support the transmission rod 304, which facilitates the overall rotation of the arch-breaking mechanism. The protective cover plate 2 can prevent accidental collisions from affecting the transmission path between the drive motor and the corresponding transverse feeding screw.
[0014] The discharge cutting mechanism includes a telescopic cylinder 701, a cylinder seat 702, a lever seat 703, a transmission lever 704, a longitudinal push rod 705, a door bracket 706, and a cutting door 707. The cylinder seat 702 is fixed to the top of the longitudinal feeding cylinder 13. The telescopic cylinder 701 is mounted on the cylinder seat 702. The lever seat 703 is suspended in the middle of the cylinder seat 702. The transmission lever 704 is rotatably mounted on the lever seat 703. One end of the transmission lever 704 is connected to the top end of the telescopic rod of the telescopic cylinder 701, and the other end is connected to the top end of the longitudinal push rod 705. The other end of the longitudinal push rod 705 passes through the longitudinal feeding cylinder 13 and is fixed to the cutting door 707 by the door bracket 706. The diameter of the cutting door 707 matches the discharge port diameter of the longitudinal feeding cylinder 13, and it can move vertically up and down with the telescopic rod of the telescopic cylinder 701 to complete the opening and closing of the discharge port.
[0015] With the above-mentioned structure, during the powder packaging process, two transverse spiral feeders can be used together or a single transverse spiral feeder can be used to feed the powder as needed. This satisfies the packaging requirements of powders with different flowability while precisely controlling the filling speed at different stages of filling. It can ensure both the overall filling efficiency and the stability of the final filling stage, thereby improving the uniformity of product packaging.
[0016] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A multi-stage variable speed feed device, said multi-stage variable speed feed device mounted on a main frame, characterized by, include: hoppers and multi-stage screw conveyor units; The hopper is fixedly installed on the workbench on top of the main frame. The multi-stage screw feeder unit consists of multiple horizontally arranged transverse screw feeders and one longitudinal screw feeder. Each transverse screw feeder includes a transverse feeding screw and a transverse drive motor. All transverse feeding screws are horizontally installed above the workbench. The corresponding transverse drive motors are fixed on motor bases arranged below the workbench of the main frame. The power output end of each transverse drive motor is connected to the power input end of the corresponding transverse feeding screw. The multiple transmission paths are spatially staggered. The longitudinal screw feeder includes a longitudinal drive motor, a longitudinal feeding cylinder, and a longitudinal feeding screw. The longitudinal feeding cylinder is fixedly connected to the lower part of the hopper through horizontal connecting pipes corresponding to multiple transverse screw feeders. All transverse feeding screws pass horizontally through the hopper and are connected to the longitudinal feeding cylinder through corresponding horizontal connecting pipes. The longitudinal feeding screw rotates inside the longitudinal feeding cylinder. The longitudinal drive motor is fixed to the top of the longitudinal feeding cylinder and is connected to the power input end of the longitudinal feeding screw through a reducer. A discharge cutting mechanism is also installed on the longitudinal feeding cylinder.
2. The multi-stage variable speed feed device of claim 1, wherein, The hopper is also equipped with an arch-breaking mechanism, which includes an arch-breaking head, an adapter, a transmission rod, and an auxiliary positioning bracket. The adapter is installed on the hopper wall, and a sealing ring is installed between the adapter and the hopper wall. The inner side of the adapter is connected to the arch-breaking head, and the outer side is connected to one end of the transmission rod. The other end of the transmission rod is rotatably mounted on the auxiliary positioning bracket. A driven sprocket is installed on the shaft of the transmission rod, and one of the plurality of transverse screw feeders has a drive sprocket at its power input end that matches the driven sprocket.
3. The multi-stage variable speed feed device of claim 2, wherein, The auxiliary positioning bracket includes a base and support columns. The base is fixed to the worktable on the top of the main frame. There are two support columns, which are symmetrically fixed on both sides of the base. The two support columns are connected by multiple reinforcing plates. A rotary bearing seat is installed on one of the reinforcing plates. The end of the transmission rod is inserted into the rotary bearing seat.
4. The multi-stage variable speed feed device of claim 3, wherein, A protective cover is also installed on the top worktable of the main frame. The protective cover is installed based on the auxiliary positioning bracket, and the support columns are all fixed on the inner wall of the protective cover on the corresponding side.
5. The multi-stage variable speed feed device of claim 1, wherein, There are two transverse spiral feeders, which are arranged in parallel vertically. They are an upper spiral feeder and a lower spiral feeder. The diameter of the feeding screw of the upper spiral feeder is smaller than that of the feeding screw of the lower spiral feeder. The power input ends of the upper spiral feeder and the lower spiral feeder are staggered and then connected to the power output ends of the corresponding drive motors via belts.
6. The multi-stage variable speed feed device of claim 1, wherein, The discharge cutting mechanism includes a telescopic cylinder, a cylinder seat, a lever seat, a transmission lever, a longitudinal push rod, a door bracket, and a cutting door. The cylinder seat is fixed to the top of the longitudinal feeding cylinder. The telescopic cylinder is installed on the cylinder seat. The lever seat is suspended in the middle of the cylinder seat. The transmission lever is rotatably installed on the lever seat. One end of the transmission lever is connected to the top of the telescopic rod of the telescopic cylinder, and the other end is connected to the top of the longitudinal push rod. The other end of the longitudinal push rod passes through the longitudinal feeding cylinder and is fixedly connected to the cutting door through the door bracket. The diameter of the cutting door matches the discharge port of the longitudinal feeding cylinder.