Feeding device for degradable plastic bag production
By designing a system that includes feeding, drying, and dust collection devices, the problems of moisture control and dust pollution during raw material drying and transportation were solved, achieving stability and environmental protection in the production of biodegradable plastic bags.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HAOTAIJIA ECO TECH CO LTD
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-24
AI Technical Summary
Existing biodegradable plastic bag production equipment has difficulty controlling the moisture content of raw materials during drying and transportation, resulting in defects such as bubbles and silver streaks on the surface of the products, while also polluting the operating environment with smoke and dust.
A system including a feeding, drying, and dust collection device was designed. The drying device assists in drying the material to reduce the moisture content of the raw material, and the dust collection device collects the smoke and dust, thereby improving the practicality of the device.
It effectively reduces the moisture content of raw materials, avoids product defects, reduces the impact of smoke and dust on the operating environment, and improves the practicality of the equipment.
Smart Images

Figure CN224158691U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of plastic product manufacturing, and in particular to a feeding device for the production of biodegradable plastic bags. Background Technology
[0002] Plastic bags are indispensable items in people's daily lives, often used to pack other items. They are widely used due to their low cost, light weight, large capacity, and ease of storage. Modern production of biodegradable plastic bags typically requires plastic bag processing equipment. Biodegradable plastic bags are a type of plastic bag with environmentally friendly properties. They are plastic bags that degrade under specific natural conditions through the action of naturally occurring microorganisms, ultimately degrading completely into biomass such as carbon dioxide. They are usually made from biodegradable materials such as starch and polylactic acid, or bio-based polymers and biodegradable additives.
[0003] The prior art Chinese utility model patent with application number CN202121868783.7 relates to a raw material feeding device for the production of biodegradable plastic bags, including a support, a feeding funnel, a first conveying mechanism, a connecting frame, a guide pipe, a crushing cylinder, a switch, and a conveying mechanism, which can crush the raw materials.
[0004] However, in actual production, it is necessary to keep biodegradable materials dry to ensure the production effect of plastic bags. It is difficult to control the moisture content of raw materials during production, processing, and transportation. High moisture content in raw materials will cause the moisture to rapidly vaporize at high temperatures during injection molding and extrusion, forming water vapor. This water vapor may cause defects such as bubbles and silver streaks on the surface of the product. The aforementioned device does not have the ability to assist in drying the raw materials. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a feeding device for biodegradable plastic bag production that transports materials through a feeding device, smoothly and evenly conveys the materials to the production equipment, assists in drying the materials through a drying device to reduce the moisture content of the raw materials, and collects the smoke and dust generated during the operation of the drying device through a dust collection device to reduce the impact of smoke and dust on the operating environment, thereby improving the practicality of the device.
[0006] This utility model discloses a feeding device for the production of biodegradable plastic bags; it includes a feeding device, a drying device, and a dust collection device. The drying device is installed on the feeding device, and the dust collection device is installed on the feeding device. The feeding device transports the material and delivers it smoothly and evenly to the production equipment. The drying device assists in drying the material to reduce the moisture content of the raw materials. The dust collection device collects the smoke and dust generated during the operation of the drying device, reducing the impact of smoke and dust on the operating environment and improving the practicality of the device.
[0007] Preferably, the feeding device includes a storage bin, a discharge pipe, a discharge screw, a first geared motor, and an anti-corrosion coating. The bottom of the storage bin is conical, and the output end of the storage bin is connected to the left side of the discharge pipe. A discharge screw is horizontally installed inside the discharge screw, and a first geared motor is installed on the left end face of the discharge pipe. The output end of the first geared motor is connected to the discharge screw, and the left side of the discharge screw is coated with an anti-corrosion coating. The storage bin stores the material, and the first geared motor is turned on to transmit power to the discharge screw, causing it to rotate. The rotating discharge screw outputs the material evenly and smoothly. The anti-corrosion coating increases the corrosion resistance of the left side of the discharge screw, increases the service life of the equipment, and improves the practicality of the device.
[0008] Preferably, the device also includes a second geared motor and spiral blades. The second geared motor is installed on the upper surface of the storage box, and the spiral blades are installed inside the storage box. The output end of the second geared motor is connected to the spiral blades. When the second geared motor is turned on, power is transmitted to the spiral blades, which drive the spiral blades to rotate. The rotating spiral blades continuously lift the material at the bottom upwards, thereby making the material in the storage box evenly distributed. This facilitates the auxiliary drying of all materials in conjunction with the drying device, improving the practicality of the device.
[0009] Preferably, the drying device includes a wide-width air inlet pipe, a reducing connector, a hot air fan, and a filter screen. A set of strip-shaped air inlets is respectively provided on the left front and left rear sides of the bottom of the discharge pipe. A set of wide-width air inlets is connected to each strip-shaped air inlet. A reducing connector is installed at the input end of the wide-width air inlet pipe, and a hot air fan is installed on the reducing connector. A filter screen is installed on the strip-shaped air inlets. The filter screen prevents material in the discharge pipe from entering the wide-width air inlet pipe and causing blockage, which would affect the normal output of high-temperature gas. The hot air fan heats the outside air, which is then sent into the discharge pipe through the reducing connector and the wide-width air inlet pipe, causing the high-temperature gas to flow upwards from the bottom of the storage tank, thereby assisting in the drying of the material particles and improving the practicality of the device.
[0010] Preferably, the dust collection device includes an air guide elbow, a waste bin, a dust filter, a vibrating motor, and a discharge hopper. An air guide elbow is connected to the upper surface of the storage bin, and a waste bin is connected to the output end of the air guide elbow. A discharge hopper is located at the bottom of the waste bin, and a valve is installed on the lower surface of the discharge hopper. A dust filter is installed on the upper left side of the air guide elbow, and a vibrating motor is installed on the left side of the waste bin. High-temperature gas carries dust particles from the material upwards, and the gas is discharged through the air guide elbow. The dust particles are intercepted by the dust filter, reducing the impact of dust on the operating environment. The vibrating motor is periodically activated to vibrate the dust filter, thereby shaking off solid particles adhering to the inner surface of the dust filter and collecting them in the waste bin. The discharge hopper facilitates the discharge of dust, reducing particle residue in the edge area of the waste bin and improving the practicality of the device.
[0011] Preferably, it also includes a sloping top, which is provided on the top surface of the storage box. The sloping top slopes downward on the side away from the air guide bend. The sloping top guides the gas at the top of the storage box, allowing more dust to enter the air guide bend along with the gas, thus improving the practicality of the device.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: the material is transported by the feeding device, and the material is stably and evenly delivered to the production equipment; the material is assisted in drying by the drying device, reducing the moisture content of the raw materials; and the dust collection device collects the smoke and dust generated during the operation of the drying device, reducing the impact of smoke and dust on the operating environment and improving the practicality of the device. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;
[0014] Figure 2 This is a schematic diagram of the second isometric structure of this utility model;
[0015] Figure 3 This is a first cross-sectional structural diagram of the present invention;
[0016] Figure 4 This is a schematic diagram of the second cross-sectional structure of this utility model;
[0017] Figure 5 This is a partially enlarged structural schematic diagram of the present invention;
[0018] The following are labeled in the attached diagram: 1. Storage bin; 2. Discharge pipe; 3. Discharge screw; 4. First geared motor; 5. Anti-corrosion coating; 6. Second geared motor; 7. Spiral blades; 8. Wide air inlet pipe; 9. Variable diameter connector; 10. Hot air blower; 11. Filter screen; 12. Air guide elbow; 13. Waste bin; 14. Smoke and dust filter screen; 15. Vibrating motor; 16. Discharge hopper; 17. Sloping top. Detailed Implementation
[0019] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example
[0020] Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the drying device is installed on the feeding device, and the dust collection device is installed on the feeding device;
[0021] First, the raw material particles are added into the storage bin 1. Then, the second reduction motor 6 is turned on to transmit power to the spiral blades 7, causing the spiral blades 7 to rotate. The rotating spiral blades 7 continuously lift the material at the bottom upwards. Then, the outside air is heated by the hot air blower 10 and sent into the discharge pipe 2 through the reducing connector 9 and the wide air inlet pipe 8, so that the high temperature gas flows upwards from the bottom of the storage bin 1, thereby assisting in the drying of the material particles. Then, the first reduction motor 4 is turned on to transmit power to the discharge spiral 3, causing the discharge spiral 3 to rotate. The rotating discharge spiral 3 outputs the material evenly and stably. The vibration motor 15 is turned on at regular intervals to drive the dust filter screen 14 to vibrate, thereby shaking the solid particles adhering to the inner side of the dust filter screen 14 into the waste bin 13 for collection.
[0022] The feeding device includes a storage box 1, a discharge pipe 2, a discharge screw 3, a first reduction motor 4, and an anti-corrosion coating 5. The bottom of the storage box 1 is conical. The output end of the storage box 1 is connected to the left side of the discharge pipe 2. The discharge screw 3 is horizontally installed inside the discharge screw 3. The first reduction motor 4 is installed on the left end face of the discharge pipe 2. The output end of the first reduction motor 4 is connected to the discharge screw 3. The left side of the discharge screw 3 is coated with an anti-corrosion coating 5.
[0023] It also includes a second geared motor 6 and a spiral blade 7. The second geared motor 6 is installed on the upper surface of the storage box 1, and the spiral blade 7 is installed inside the storage box 1. The output end of the second geared motor 6 is connected to the spiral blade 7.
[0024] The drying device includes a wide air inlet pipe 8, a reducing connector 9, a hot air blower 10, and a filter screen 11. A set of strip-shaped air inlets is provided on the left front side and left rear side of the bottom of the discharge pipe 2. A set of wide air inlet pipes 8 are connected to the strip-shaped air inlets. A reducing connector 9 is installed on the input end of the wide air inlet pipe 8. A hot air blower 10 is installed on the reducing connector 9. A filter screen 11 is installed on the strip-shaped air inlets.
[0025] The dust collection device includes an air guide elbow 12, a waste bin 13, a dust filter 14, a vibrating motor 15, and a discharge hopper 16. The air guide elbow 12 is connected to the upper end of the storage box 1, and the waste bin 13 is connected to the output end of the air guide elbow 12. The discharge hopper 16 is provided at the bottom of the waste bin 13, and a valve is installed on the lower end of the discharge hopper 16. The dust filter 14 is provided on the upper left side of the air guide elbow 12, and the vibrating motor 15 is installed on the left end of the waste bin 13.
[0026] It also includes a sloping top 17, which is provided on the top surface of the storage box 1. The sloping top 17 is inclined downward on the side away from the air guide bend 12.
[0027] The material is transported by the feeding device and delivered smoothly and evenly to the production equipment. The drying device assists in drying the material to reduce the moisture content of the raw materials. The dust collection device collects the smoke and dust generated during the operation of the drying device, reducing the impact of smoke and dust on the operating environment and improving the practicality of the device.
[0028] like Figures 1 to 5 As shown, this utility model discloses a feeding device for the production of biodegradable plastic bags. During operation, raw material granules are first added to the storage bin 1. Then, the second reduction motor 6 is activated to transmit power to the spiral blades 7, causing them to rotate. The rotating spiral blades 7 continuously lift the material from the bottom upwards. Then, the outside air is heated by the hot air blower 10 and sent into the discharge pipe 2 through the reducing connector 9 and the wide air inlet pipe 8, allowing the high-temperature gas to flow upwards from the bottom of the storage bin 1, thus assisting in the drying of the material granules. Next, the first reduction motor 4 is activated to transmit power to the discharge spiral 3, causing it to rotate. The rotating discharge spiral 3 outputs the material evenly and smoothly. At regular intervals, the vibration motor 15 is activated to vibrate the dust filter 14, thereby shaking off the solid particles adhering to the inner surface of the dust filter 14 and collecting them in the waste bin 13.
[0029] The hot air blower 10, the second geared motor 6, the vibration motor 15, and the first geared motor 4 of the feeding device for biodegradable plastic bag production of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.
[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A feeding device for the production of biodegradable plastic bags; characterized in that, It includes a feeding device, a drying device and a dust collection device. The drying device is installed on the feeding device and the dust collection device is installed on the feeding device. The drying device includes a wide air inlet pipe (8), a variable diameter connector (9), a hot air fan (10) and a filter screen (11). A set of strip-shaped air inlets are respectively provided on the left front side and left rear side of the bottom of the discharge pipe (2). A set of wide air inlet pipes (8) are respectively connected to the strip-shaped air inlets. A variable diameter connector (9) is installed on the input end of the wide air inlet pipe (8). A hot air fan (10) is installed on the variable diameter connector (9). A filter screen (11) is installed on the strip-shaped air inlet.
2. The feeding device for biodegradable plastic bag production as described in claim 1, characterized in that, The feeding device includes a storage box (1), a discharge pipe (2), a discharge screw (3), a first geared motor (4), and an anti-corrosion coating (5). The bottom of the storage box (1) is conical. The output end of the storage box (1) is connected to the left side of the discharge pipe (2). The discharge screw (3) is horizontally installed inside the discharge screw (3). The first geared motor (4) is installed on the left end face of the discharge pipe (2). The output end of the first geared motor (4) is connected to the discharge screw (3). The left side of the discharge screw (3) is coated with an anti-corrosion coating (5).
3. The feeding device for biodegradable plastic bag production as described in claim 2, characterized in that, It also includes a second geared motor (6) and a spiral blade (7). The second geared motor (6) is installed on the upper surface of the storage box (1), and the spiral blade (7) is installed inside the storage box (1). The output end of the second geared motor (6) is connected to the spiral blade (7).
4. The feeding device for biodegradable plastic bag production as described in claim 3, characterized in that, The dust collection device includes an air guide elbow (12), a waste bin (13), a dust filter (14), a vibrating motor (15), and a discharge hopper (16). The upper end of the storage box (1) is connected to the air guide elbow (12), the output end of the air guide elbow (12) is connected to the waste bin (13), the bottom of the waste bin (13) is provided with a discharge hopper (16), the lower end of the discharge hopper (16) is equipped with a valve, the upper left side of the air guide elbow (12) is provided with a dust filter (14), and the left end of the waste bin (13) is equipped with a vibrating motor (15).
5. The feeding device for biodegradable plastic bag production as described in claim 4, characterized in that, It also includes a sloping top (17), which is provided on the top surface of the storage box (1). The sloping top (17) slopes downward on the side away from the air guide bend (12).
Citation Information
Patent Citations
Raw material feeding device for degradable plastic bag production
CN215363348U