Granule returning device
By designing a pellet recharge device, the sieve residue produced by the twin-screw granulator and the pellets that do not meet the particle size are sent to the feeding silo for granulation, which solves the problem of inability to reuse in the prior art, and achieves cost reduction and efficient operation of the equipment.
Patent Information
- Application Number
- CN202422358234.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-26
AI Technical Summary
The pellet sieve residues produced by existing twin-screw granulators and pellets that do not meet the particle size cannot be reused, resulting in increased production costs and increased inventory.
A pellet recharge device is designed, including a hot mixing pot, a cold mixing pot, a spiral feeder, a storage silo, a vibrating screen and a twin screw granulator. The screen residue and pellets that do not meet the particle size are sent to the twin screw feeding silo through the fourth spiral feeding silo, and then granulated again after mixing.
Effectively recycle and reuse sieve residues and pellets that do not meet the particle size, reduce production costs, ensure product quality is not affected, and the equipment is compact and efficient.
Smart Images
Figure CN223211712U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of material conveying, and is a granular material returning device. Background Art
[0002] At present, the R&D center has transformed and upgraded the laboratory two-stage granulation unit. When producing PVC cable granules, the granule residues generated on the twin-screw granulator are temporarily collected, and the granule residues have not been reused. At the same time, the granules that do not meet the particle size generated by the twin-screw granulator during the production process are not normally reused. Therefore, the granule residues and granules that do not meet the particle size generated during the production process cannot be normally recycled and utilized, resulting in increased production costs and increased inventory. Summary of the Invention
[0003] The utility model provides a pellet returning device, which overcomes the above-mentioned deficiencies of the prior art and can effectively solve the problem that pellets screen residues and pellets that do not meet the particle size produced by the existing twin-screw pelletizer cannot be recycled.
[0004] The technical solution of the utility model is achieved through the following measures: a pellet returning device, comprising a hot mixing pot, a cold mixing pot, a first screw feeder, a storage bin, a second screw feeder, a vibrating screen, a third screw feeder, a twin-screw granulator and a fourth screw feeder, a first processing pipeline fixedly connected between the hot mixing pot outlet and the cold mixing pot inlet, a second processing pipeline fixedly connected to the cold mixing pot outlet, a first screw feeder corresponding to the lower portion of the second processing pipeline and the storage bin feed port, a second screw feeder corresponding to the storage bin discharge port and the vibrating screen feed port, a twin-screw feeding bin at the top inlet of the twin-screw granulator, a third screw feeder corresponding to the vibrating screen discharge port and the twin-screw feeding bin feed port, and a fourth screw feeder corresponding to the twin-screw feeding bin feed port.
[0005] The following are further optimizations and / or improvements to the above-mentioned utility model technical solution:
[0006] The first screw loader corresponding to the second processing pipeline is provided with a first feed hopper at the lower end, the first screw loader corresponding to the storage bin feed port is provided with a first discharge pipe at the upper end, the second screw loader corresponding to the storage bin discharge port is provided with a second feed hopper at the lower end, the second screw loader corresponding to the vibrating screen feed port is provided with a second discharge pipe at the upper end, the third screw loader corresponding to the vibrating screen discharge port is provided with a third feed hopper at the lower end, the third screw loader corresponding to the twin-screw feeding bin feed port is provided with a third discharge pipe at the upper end, the fourth screw loader corresponding to the twin-screw feeding bin feed port is provided with a fourth discharge pipe at the upper end, and the fourth screw loader is provided with a fourth feed hopper at the lower end. The first, second, third and fourth feed hoppers are all in the shape of a prism with a larger upper portion and a smaller lower portion, and the first discharge pipe, the second, third and fourth discharge pipes are all arranged in an inclined shape.
[0007] The above also includes a baffle, and the lower end of the fourth feed hopper is fixedly installed with a baffle, and the center of the baffle is provided with a discharge hole.
[0008] A bracket is provided above the fourth feed hopper.
[0009] The above also includes a time relay. The fourth spiral feeder is provided with a drive module, and the time relay is connected to the drive module of the fourth spiral feeder.
[0010] A stirrer is provided in the twin-screw feeding bin, and a valve is provided on the second processing pipeline.
[0011] The utility model has a reasonable and compact structure and is easy to use. It can effectively send the screen residue and the pellets that do not meet the particle size into the twin-screw feeding bin through the added fourth screw feeder, mix them with the screened pellets and send them to the twin-screw granulator for granulation, effectively granulate the screen residue and the pellets that do not meet the particle size again, without affecting the product quality and reducing costs. The first screw feeder, the second screw feeder and the third screw feeder are provided, while ensuring the conveying efficiency, the entire granulation process equipment can be made compact, efficient and reasonable. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Attachment Figure 1 This is a schematic diagram of the process flow of this utility model.
[0013] Attachment Figure 2 For attachment Figure 1 Schematic diagram of the top view of the fourth spiral feeder and the fourth feed hopper.
[0014] Attachment Figure 1The codes are as follows: 1 for hot mixing pot, 2 for cold mixing pot, 3 for the first screw feeder, 4 for the storage bin, 5 for the second screw feeder, 6 for the vibrating screen, 7 for the third screw feeder, 8 for the twin-screw granulator, 9 for the fourth screw feeder, 10 for the first processing pipeline, 11 for the second processing pipeline, 12 for the twin-screw feeding bin, 13 for the valve, 14 for the discharge hole, 15 for the bracket, 16 for the agitator, and 17 for the baffle. DETAILED DESCRIPTION
[0015] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.
[0016] In the present invention, unless otherwise specified, the equipment and devices used are all known and commonly used equipment and devices in the art, such as a hot mixing pot, a cold mixing pot, a screw feeder, a twin-screw pelletizer, and a time relay.
[0017] In this utility model, for the convenience of description, the relative position relationship of each component is described based on the Figure 1 The positional relationships of front, back, top, bottom, left, and right are described in the layout of the manual. Figure 1 The layout direction is determined by the
[0018] The present invention will be further described below in conjunction with the embodiments and accompanying drawings:
[0019] Example 1: As shown in the attached Figure 1 As shown, the pellet return device includes a hot mixing pot 1, a cold mixing pot 2, a first screw feeder 3, a storage bin 4, a second screw feeder 5, a vibrating screen 6, a third screw feeder 7, a twin-screw granulator 8 and a fourth screw feeder 9. A first processing pipeline 10 is fixedly connected between the outlet of the hot mixing pot 1 and the inlet of the cold mixing pot 2, and a second processing pipeline 11 is fixedly connected to the outlet of the cold mixing pot 2. A first screw feeder 3 is provided between the lower portion of the corresponding second processing pipeline 11 and the feed port of the storage bin 4, a second screw feeder 5 is provided between the corresponding discharge port of the storage bin 4 and the feed port of the vibrating screen 6, a twin-screw feeding bin 12 is provided at the top inlet of the twin-screw granulator 8, a third screw feeder 7 is provided between the corresponding discharge port of the vibrating screen 6 and the feed port of the twin-screw feeding bin 12, and a fourth screw feeder 9 is also provided on the feed port of the corresponding twin-screw feeding bin 12.
[0020] The utility model uses the fourth spiral feeder 9 to send the screen residue and pellets that do not meet the particle size produced by the twin-screw granulator 8 to the twin-screw feeding bin 12, mix them with the screened pellets and send them to the twin-screw granulator 8 for granulation, effectively granulating the screen residue and pellets that do not meet the particle size again, without affecting product quality and reducing costs; the first spiral feeder 3, the second spiral feeder 5 and the third spiral feeder 7 can ensure the transportation efficiency while making the entire granulation process equipment compact, efficient and reasonable.
[0021] The above-mentioned pellet return device can be further optimized and / or improved according to actual needs:
[0022] Example 2: The difference between it and Example 1 is that: Figure 1 As shown, a first feed hopper is provided at the lower end of the first spiral feeder 3 below the second processing pipeline 11, a first discharge pipe is provided at the upper end of the first spiral feeder 3 above the feed port of the storage bin 4, a second feed hopper is provided at the lower end of the second spiral feeder 5 below the discharge port of the storage bin 4, a second discharge pipe is provided at the upper end of the second spiral feeder 5 above the feed port of the vibrating screen 6, a third feed hopper is provided at the lower end of the third spiral feeder 7 below the discharge port of the vibrating screen 6, a third discharge pipe is provided at the upper end of the third spiral feeder 7 above the feed port of the twin-screw feeding bin 12, a fourth discharge pipe is provided at the upper end of the fourth spiral feeder 9 above the feed port of the twin-screw feeding bin 12, and a fourth feed hopper is provided at the lower end of the fourth spiral feeder 9. The first, second, third and fourth feed hoppers are all prism-shaped with a larger upper portion and a smaller lower portion, and the first discharge pipe, the second, third and fourth discharge pipes are all arranged in an inclined shape.
[0023] During use, the first, second, third and fourth feed hoppers are provided to facilitate loading, and the first, second, third and fourth discharge pipes are provided to facilitate discharge.
[0024] Example 3: The difference between it and Example 1 to Example 2 is that: Figure 1 、 2 As shown, a baffle 17 is further included, and a baffle 17 is fixedly installed at the lower end of the fourth feed hopper. A feeding hole 14 is provided in the center of the baffle 17. As needed, the feeding hole 14 is a square hole with a diameter of 2CM*2CM.
[0025] During use, since the material in the fourth feed hopper comes from the screen residue and the pellets that do not meet the particle size, the baffle 17 and the discharge hole 14 are set to control the discharge speed of the fourth spiral feeder 9, effectively avoiding the problem of fast discharge of pellets and ensuring uniform return of materials.
[0026] Example 4: The difference between it and Example 1 to Example 3 is that: Figure 1 、 2 As shown, a bracket 15 is provided above the fourth feed hopper.
[0027] During use, the residue and the granular materials that do not meet the particle size are collected by ton bags, which are placed on the bracket 15 by a forklift. The bottom of the ton bag is open, and the residue and the granular materials that do not meet the particle size can flow into the fourth feed hopper of the fourth spiral feeder 9 by themselves. The operator does not need to use small bags to return the materials, which can reduce the operator's workload and improve work efficiency.
[0028] Embodiment 5: The embodiment 5 differs from the embodiments 1 to 4 in that it further includes a time relay, a drive module is provided on the fourth screw feeder 9, and the time relay is connected to the drive module of the fourth screw feeder 9. The drive module is a motor as needed.
[0029] During use, the time relay is set to control the operating time and start-stop interval of the fourth spiral feeder 9. When the set value of the operating time and start-stop interval preset by the time relay is reached, the motor of the fourth spiral feeder 9 is controlled to start, so as to control the operation and start-stop of the fourth spiral feeder 9. In addition, the return ratio of the sieve residue and the granular materials that do not meet the particle size can also be controlled to ensure uniform return of the material, and the sieve residue and the granular materials that do not meet the particle size can be granulated again.
[0030] Example 6: The difference between Example 6 and Example 1 to Example 5 is that an agitator 16 is provided in the twin-screw feeding bin 12 and a valve 13 is provided on the second processing pipeline 11.
[0031] During use, the screened PVC powder is fed into the twin-screw feeding bin 12 by the third screw feeder 7, and then the screen residue and granules that do not meet the particle size are fed into the twin-screw feeding bin 12 by the fourth screw feeder 9, and are stirred evenly by the stirrer 16 without affecting the quality of the product and ensuring uniform return of the material.
[0032] As needed, the pipelines and equipment of the pellet return device can be equipped with conventional valves, thermometers, pressure gauges, etc. that are well known and used in the art according to production needs.
[0033] The above technical features constitute the embodiments of the present invention, which have strong adaptability and implementation effect. Non-essential technical features can be added or removed according to actual needs to meet the requirements of different situations.
[0034] The use process of the embodiment of the present utility model is as follows: First, the materials and additives are mixed and reacted in a hot mixer 1 (120°C) to obtain PVC powder, which is then sent to a cold mixer 2 for cooling. After cooling to room temperature, the PVC powder in the cold mixer 2 is sent to a storage bin 4 by a first screw feeder 3 for temporary storage. The PVC powder in the storage bin 4 is sent to a vibrating screen 6 by a second screw feeder 5 for screening. The screened PVC powder is sent to a twin-screw feeding bin 12 by a third screw feeder 7, and then to a twin-screw granulator 8 for granulation. When a large amount of sieve residue and unqualified PVC pellets are generated in the twin-screw granulator 8, the sieve residue and unqualified PVC pellets can be regularly sent to the twin-screw feeding bin 12 by a fourth screw feeder 9, stirred and mixed with the PVC powder, and then sent to the twin-screw granulator 8.
Claims
1. A pellet return device, characterized in that A hot mixing pot, a cold mixing pot, a first screw feeder, a storage bin, a second screw feeder, a vibrating screen, a third screw feeder, a twin-screw granulator and a fourth screw feeder. A first processing pipeline is fixedly connected between the hot mixing pot outlet and the cold mixing pot inlet, and a second processing pipeline is fixedly connected to the cold mixing pot outlet. A first screw feeder is provided between the lower portion of the corresponding second processing pipeline and the feed port of the storage bin, a second screw feeder is provided between the corresponding discharge port of the storage bin and the feed port of the vibrating screen, a twin-screw feeding bin is provided at the top inlet of the twin-screw granulator, a third screw feeder is provided between the corresponding discharge port of the vibrating screen and the feed port of the twin-screw feeding bin, and a fourth screw feeder is also provided on the feed port of the corresponding twin-screw feeding bin.
2. The pellet return device according to claim 1, characterized in that A first feed hopper is provided at the lower end of the first spiral loader corresponding to the bottom of the second processing pipeline, a first discharge pipe is provided at the upper end of the first spiral loader corresponding to the top of the storage bin feed port, a second feed hopper is provided at the lower end of the second spiral loader corresponding to the bottom of the storage bin discharge port, a second discharge pipe is provided at the upper end of the second spiral loader corresponding to the top of the vibrating screen feed port, a third feed hopper is provided at the lower end of the third spiral loader corresponding to the bottom of the vibrating screen discharge port, a third discharge pipe is provided at the upper end of the third spiral loader corresponding to the top of the twin-screw feeding bin feed port, a fourth discharge pipe is provided at the upper end of the fourth spiral loader corresponding to the top of the twin-screw feeding bin feed port, and a fourth feed hopper is provided at the lower end of the fourth spiral loader. The first, second, third and fourth feed hoppers are all in the shape of a prism with a larger upper portion and a smaller lower portion, and the first discharge pipe, the second, third and fourth discharge pipes are all arranged in an inclined shape.
3. The pellet return device according to claim 2, characterized in that It also includes a baffle, which is fixedly installed at the lower end of the fourth feed hopper, and a discharge hole is provided in the center of the baffle.
4. The pellet return device according to claim 2 or 3, characterized in that A bracket is provided above the fourth feed hopper.
5. The pellet return device according to claim 1, 2 or 3, characterized in that It also includes a time relay. The fourth spiral feeder is provided with a drive module, and the time relay is connected to the drive module of the fourth spiral feeder.
6. The pellet return device according to claim 4, characterized in that It also includes a time relay. The fourth spiral feeder is provided with a drive module, and the time relay is connected to the drive module of the fourth spiral feeder.
7. The pellet return device according to claim 1, 2, 3 or 6, characterized in that A stirrer is provided in the twin-screw feeding bin and a valve is provided on the second processing pipeline.
8. The pellet return device according to claim 4, characterized in that A stirrer is provided in the twin-screw feeding bin and a valve is provided on the second processing pipeline.
9. The pellet return device according to claim 5, characterized in that A stirrer is provided in the twin-screw feeding bin and a valve is provided on the second processing pipeline.