A modified plastic production device

Abstract

The utility model relates to the technical field of plastics production, specifically relates to a modified plastics production device, the utility model discloses a support, the support top is connected with screening cooling box through the spring, screening cooling box top one side is provided with the discharge slot, and the screening cooling box bottom is provided with vibration motor, the screening cooling box inside is provided with first screen cloth and second screen cloth respectively, one side of screening cooling box is provided with high pressure gas source, the high pressure gas source output end is connected with fluidization pipe, and the fluidization pipe top is provided with the fluidization board in the screening cooling box inside, reach fast and evenly take away the granule heat, realize the cooling of granule, ensure that when entering the subsequent screening stage, the granule temperature has reduced to rigid state or at least below the softening threshold, avoid the deformation of granule in the screening process due to the temperature is too high, influence screening accuracy and efficiency.

Description

Technical Field

[0001] This utility model relates to the field of plastic production technology, specifically to a modified plastic production apparatus. Background Technology

[0002] In cable production, modified plastics are the core insulation and sheathing materials, and must simultaneously meet multiple performance requirements such as electrical insulation, mechanical strength, weather resistance, temperature resistance, and chemical resistance. Modified plastics for cables are mainly divided into insulation layer materials and sheathing layer materials. After the modified plastic granules are extruded and granulated, the granules formed by the pelletizer still retain residual processing heat (usually 50-80℃). In the subsequent conveying process, the friction and extrusion between the granules will continue to generate frictional heat. If the heat dissipation conditions are not good, the temperature may rise further to 80-100℃. For PVC plastic granules, the glass transition temperature is about 80℃. When the temperature approaches or exceeds this, the granules will enter a "high elastic state", with increased flexibility and decreased rigidity, making them very easy to deform under external force, thus causing a reduction in screening efficiency.

[0003] Specifically, standard screening relies on the matching of particle size and screen aperture. High temperature causes PVC particles to expand thermally, and the softened particles are easily squeezed and deformed. Particles that originally met the size requirements may temporarily become larger or deformed, causing them to get stuck in the screen aperture or unable to pass through. This can easily form a bridging phenomenon on the screen surface, clogging the screen aperture. At the same time, the viscosity of the particles increases slightly at high temperatures, which may adsorb onto the screen surface or stick together, further reducing the speed at which the material passes through the screen, resulting in a decrease in screening output per unit time.

[0004] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of this invention is to provide a modified plastics production device that can effectively solve the above-mentioned technical problems.

[0006] To achieve the purpose of this utility model, the following technical solution is adopted: A modified plastics production apparatus includes: a support frame, a screening and cooling box connected to the top of the support frame by a spring, a feeding trough provided on one side of the top of the screening and cooling box, and a vibration motor provided at the bottom of the screening and cooling box; The screening and cooling box is equipped with a first screen and a second screen. A high-pressure gas source is provided on one side of the screening and cooling box; the output end of the high-pressure gas source is connected to a fluidizing tube, and a fluidizing plate located inside the screening and cooling box is provided above the fluidizing tube.

[0007] Furthermore, the mesh size of the first screen is larger than that of the second screen, and the first screen is located above the second screen.

[0008] Furthermore, the springs are provided in several groups, and the groups of springs are evenly distributed between the support and the screening and cooling box.

[0009] Furthermore, the other side of the screening and cooling box is provided with a first feeding plate and a second feeding plate corresponding to the first screen and the second screen, respectively, and the other side of the screening and cooling box is provided with a feeding plate.

[0010] Furthermore, both the first and second feeding plates are inclined.

[0011] Compared with the prior art, the present invention has the following advantages: The present invention adopts a high-pressure gas source, a fluidizing pipe and a fluidizing plate, and a support frame. The top of the support frame is connected to a screening and cooling box via a spring. A material chute is provided on one side of the top of the screening and cooling box, and a vibration motor is provided at the bottom of the screening and cooling box. A first screen and a second screen are respectively provided inside the screening and cooling box. A high-pressure gas source is provided on one side of the screening and cooling box. The output end of the high-pressure gas source is connected to a fluidizing pipe, and a fluidizing plate is provided above the fluidizing pipe inside the screening and cooling box. When the high-pressure gas source is turned on, the high-pressure gas generated by the high-pressure gas source is transported to the fluidizing plate through the fluidizing pipe. The fluidizing plate is distributed with a large number of small air outlets. The high-pressure gas is sprayed out from these air outlets, which makes the modified plastic particles falling on the fluidizing plate close to the fluidized state. This can greatly increase the contact area between the particles and the cold air, quickly and evenly remove the heat from the particles, and achieve the cooling of the particles. This ensures that when entering the subsequent screening stage, the temperature of the particles has been reduced to a rigid state or at least below the softening threshold, avoiding deformation of the particles during the screening process due to excessive temperature, which would affect the screening accuracy and efficiency. Attached Figure Description

[0012] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0013] Figure 1 This is a schematic diagram of the structure of a modified plastic production device according to the present invention; Figure 2 This is a schematic diagram of a modified plastics production device according to the present invention; Figure 3 This is a schematic diagram of the internal structure of a modified plastic production device according to this utility model; Figure 4 This is a partial schematic diagram of the first and second screens of a modified plastic production device according to this utility model.

[0014] In the diagram: 1. Support frame; 2. Screening and cooling box; 3. Feeding trough; 4. Vibrating motor; 5. First feeding plate; 6. High-pressure air source; 7. Fluidizing pipe; 8. Fluidizing plate; 9. First screen; 10. Second screen; 11. Feeding plate; 12. Isolation plate; 13. Second feeding plate; 14. Third feeding plate; 15. Spring. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0016] In the description of this utility model, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component at the same time. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0017] like Figures 1 to 4 As shown, this utility model discloses a modified plastic granule screening and cooling device, including: a support 1, a screening and cooling box 2 connected to the top of the support 1 by a spring 15, a feeding trough 3 provided on one side of the top of the screening and cooling box 2, a high-pressure air source 6 provided on one side of the screening and cooling box 2, and a vibration motor 4 provided at the bottom of the screening and cooling box 2.

[0018] The screening and cooling box 2 is provided with a first screen 9 and a second screen 10 arranged sequentially from top to bottom inside the box. The screen holes of the first screen 9 are larger than those of the second screen 10. A first feeding plate 5, a second feeding plate 13, and a third feeding plate 14 are respectively arranged on one side of the screening and cooling box 2. The first feeding plate 5 is located on the feeding side of the first screen 9. The second feeding plate 13 is located on the feeding side of the second screen 10. A feeding plate 11 is arranged inside the screening and cooling box 2. The feeding plate 11 is located below the second screen 10. The third feeding plate 14 is located on the feeding side of the feeding plate 11 and is connected to the feeding plate 11.

[0019] The output end of the high-pressure gas source 6 is connected to a fluidizing tube 7, and several fluidizing tubes 7 are provided; a fluidizing plate 8 is provided above the fluidizing tube 7, and the fluidizing plate 8 is fixedly installed in the screening and cooling box 2 in the horizontal direction and is located on the feeding side of the first screen 9.

[0020] The screening and cooling box 2 is equipped with a vertically arranged isolation plate 12, which is located between the first screen 9 and the fluidizing plate 8. The isolation plate 12 is used to guide and isolate the flow of particles and has a positive effect on fluidization.

[0021] In operation, the modified plastic granules to be screened and cooled are first poured into the screening and cooling box 2 through the feeding trough 3. Then, the high-pressure air source 6 is turned on, and the high-pressure gas generated by the high-pressure air source 6 is transported to the fluidizing plate 8 through the fluidizing pipe 7. The fluidizing plate 8 has a large number of small air outlets. The high-pressure gas is sprayed out from these air outlets, which makes the modified plastic granules falling on the fluidizing plate 8 close to a fluidized state. This can greatly increase the contact area between the granules and the cold air, quickly and evenly remove the heat from the granules, and achieve the cooling of the granules. This ensures that when entering the subsequent screening stage, the temperature of the granules has been reduced to a rigid state or at least below the softening threshold, avoiding deformation of the granules during the screening process due to excessive temperature, which would affect the screening accuracy and efficiency.

[0022] Next, the vibration motor 4 is started. The vibration generated by the vibration motor 4 is transmitted to the first screen 9 and the second screen 10 through the screening and cooling box 2. Under the action of vibration, the cooled modified plastic particles vibrate and move forward on the first screen 9. Since the screen apertures of the first screen 9 and the second screen 10 are different, and the apertures of the first screen 9 are larger than those of the second screen 10, the particles will be classified according to their size. Particles smaller than the apertures of the first screen 9 will fall onto the second screen 10 and continue to move forward under vibration, while particles larger than the apertures of the first screen 9 will move along the first screen 9 and eventually be discharged from the first discharge plate 5. Particles falling onto the second screen 10 will continue to fall and be discharged from the discharge plate 11, while particles larger than the apertures of the second screen 10 will move along the second screen 10 and be discharged from the second discharge plate 13, thereby achieving the classification and screening of modified plastic particles of different sizes.

[0023] Throughout the process, spring 15 acts as a buffer against vibration, ensuring the effectiveness of the vibrating screen while reducing the direct impact of vibration on the support 1 and extending the service life of the device.

[0024] By combining fluidization cooling of fluidizing plate 8 with grading and screening by vibrating screen, this device can effectively reduce the temperature of modified plastic particles and prevent them from deforming due to high temperature, while achieving precise screening of particles of different sizes. This greatly improves the accuracy and efficiency of screening modified plastic particles and meets the strict requirements for particle quality in the production process.

[0025] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0026] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A modified plastics production apparatus, characterized in that, include: A support (1) is provided with a screening and cooling box (2) connected to the top of the support (1) by a spring (15). A feeding trough (3) is provided on one side of the top of the screening and cooling box (2). A vibration motor (4) is provided at the bottom of the screening and cooling box (2). The screening and cooling box (2) is equipped with a first screen (9) and a second screen (10) respectively. A high-pressure gas source (6) is provided on one side of the screening and cooling box (2); a fluidizing tube (7) is connected to the output end of the high-pressure gas source (6), and a fluidizing plate (8) located inside the screening and cooling box (2) is provided above the fluidizing tube (7).

2. The apparatus for producing a modified plastic according to claim 1, wherein The screen hole size of the first screen (9) is larger than that of the screen hole size of the second screen (10), and the first screen (9) is located above the second screen (10).

3. A device for producing modified plastics as claimed in claim 2, characterized in that The springs (15) are provided in several groups, and the several groups of springs (15) are evenly distributed between the support (1) and the screening and cooling box (2).

4. The apparatus for producing a modified plastic according to claim 3, wherein On the other side of the screening and cooling box (2), there are a first feeding plate (5) and a second feeding plate (13) corresponding to the first screen (9) and the second screen (10), respectively, and a feeding plate (11) is provided on the other side of the screening and cooling box (2).

5. The modified plastics production apparatus as described in claim 4, characterized in that, Both the first feeding plate (5) and the second feeding plate (13) are inclined.

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