Filtering mechanism of plastic raw material melting machine

Abstract

The invention provides a filtering mechanism of a plastic raw material melting machine, and relates to the technical field of plastic processing, the filtering mechanism comprises a melting main body, a feeding hopper is arranged above the melting main body, a drainage hole is formed in the upper position of one side of the melting main body, and the drainage hole is of a bent structure; the melting device and the electromagnet are installed on the inner side of the melting body, and the two sides of the electromagnet are each provided with a bolt installation hole. An electromagnet is arranged in the melting main body and is matched with a drainage shell, so that metal impurities in plastic raw materials can be effectively adsorbed and guided to enter a first collecting shell, efficient separation of the metal impurities and the plastic is realized, and the metal impurities are prevented from being mixed into the molten plastic to influence the product quality, such as internal defects of plastic products or damage to a processing mold.

Description

Technical Field

[0001] This invention relates to the field of plastic processing technology, and more particularly to a filtration mechanism for a plastic raw material melting machine. Background Technology

[0002] In the field of plastics processing, melting plastic raw materials is a crucial step. Currently, plastic products are widely used in the construction and automotive industries, and their quality requirements are becoming increasingly stringent. Therefore, the handling of impurities during the melting process is particularly important. However, melting machines have the following shortcomings in the process of melting plastic raw materials: During mining, transportation, and storage, plastic raw materials are easily mixed with impurities such as metal particles, dust, sand, and additive agglomerates. If these impurities are not removed, plastic products are prone to appearance defects, reduced strength and toughness, and will also wear down processing equipment, clog molds, cause production interruptions, and increase costs. Traditional single-layer filters have low filtration precision, making it difficult to handle impurities of different particle sizes. They are also prone to clogging, and cleaning and replacement are cumbersome, often leading to prolonged equipment downtime. In addition, some filtration mechanisms cannot effectively separate metallic impurities, and some do not consider flue gas treatment, resulting in the direct emission of harmful fumes that endanger the environment and human health. Summary of the Invention

[0003] This invention discloses a filtration mechanism for a plastic raw material melting machine. When the operator starts the blower, the blower rotates and draws the fumes generated inside the melting body outward. The fumes are filtered through the filter element to prevent fumes carrying harmful impurities from being directly discharged into the air. When the filter element needs to be replaced, the blower is switched around the positioning bolt to the top of another spare filter element. The support spring ensures that the bottom of the blower is in close contact with the top of the filter element, ensuring the continuity of the filtration operation.

[0004] In a first aspect, this disclosure provides a filtration mechanism for a plastic raw material melting machine, specifically comprising: a melting body, a feeding funnel located at the top of the melting body, a flow-in hole with a bent structure on one side of the melting body at the top, a melting device and an electromagnet installed on the inner side of the melting body, bolt mounting holes on both sides of the electromagnet, a chamfer located above and below the melting device, a conveying mechanism installed at the top of the melting body, the conveying mechanism being composed of an electric motor and a screw propeller, a first collection shell and a second collection shell installed on the outer side of the melting body, a smoke filtration mechanism installed at the top of the melting body, the smoke filtration mechanism being composed of a second flow-in shell, a filter element, positioning bolts and a fan, and an impurity filtration mechanism installed at the bottom of the melting body, the impurity filtration mechanism being composed of an adjusting shaft, a first filter screen and a second filter screen, a rotating shaft installed at the center of the first filter screen and the second filter screen.

[0005] Furthermore, a first flow-guiding shell is provided on the inner side of the melting body, and a discharge hole is opened on one side of the melting body. The discharge hole is connected to the first flow-guiding shell, and the first flow-guiding shell corresponds to the electromagnet.

[0006] Furthermore, a set of positioning strips is installed on one side and the bottom of the melting body. The positioning strips are slide rail structures. An installation groove is opened on each side of the first collecting shell. An installation groove is opened on each side of the top of the second collecting shell. The installation grooves are T-shaped structures. The installation grooves correspond to the structures of the positioning strips.

[0007] Furthermore, the electric motor is installed on the outer side of the melting body, and a transverse spiral propeller is installed on the inner side of the drainage hole of the melting body. One side of the spiral propeller is connected to the drive shaft of the electric motor.

[0008] Furthermore, there are two second drainage shells. Two positioning holes are opened at the top of the melting body. The inner side of the positioning holes is a cylindrical stepped structure. The bottom of the second drainage shell is installed inside the two positioning holes respectively. After the second drainage shell is installed, it is connected to the interior of the melting body. A filter element is installed on the inner side of the second drainage shell. A positioning bolt is installed between the two second drainage shells.

[0009] Furthermore, a support spring is installed on the outer side of the positioning bolt, and a sliding hole is opened on one side of the fan. The diameter of the sliding hole corresponds to that of the positioning bolt, and the positioning bolt passes through the interior of the sliding hole.

[0010] Furthermore, a rotating hole is provided at the bottom of the melting body. The rotating hole has a stepped structure. The edges of the first and second filter screens extend into the interior of the rotating hole. Two gears are installed on the outer side of the adjusting shaft. A set of meshing teeth is provided on one side of the second filter screen. The gears and meshing teeth mesh together. A knob is provided at the bottom of the adjusting shaft.

[0011] Furthermore, a rotating hole is opened at the center of the first filter screen and the second filter screen respectively, a rotating shaft passes through the inside of the rotating hole, and two scrapers are installed on the outside of the rotating shaft.

[0012] Furthermore, an oval hole is formed at the bottom of the melting body, and the oval hole is connected to the second collection shell.

[0013] This invention provides a filtration mechanism for a plastic raw material melting machine, which has the following beneficial effects: An electromagnet is installed inside the melting body to work with the flow guide shell. This effectively adsorbs and guides metal impurities in the plastic raw material into the first collection shell, achieving efficient separation of metal impurities from plastic. This prevents metal impurities from mixing into the molten plastic and affecting product quality, such as preventing internal defects in plastic products or damage to processing molds.

[0014] The positioning strip of the melting body cooperates with the T-shaped mounting groove of the collection shell, making the installation of the first and second collection shells convenient and stable, and facilitating regular disassembly and cleaning of impurities. At the same time, the design of the smoke filtration mechanism allows the fan to switch filter elements, ensuring uninterrupted filtration and facilitating filter element replacement.

[0015] The impurity filtration mechanism can change the size of the filter holes of the first and second filter screens by rotating the adjustment shaft, which can flexibly adjust the filtration accuracy according to the impurities of the raw materials, and is suitable for the filtration needs of different plastic raw materials, thus enhancing the versatility of the equipment.

[0016] The rotating shaft and scraper work together to automatically scrape off impurities from the filter screen during equipment operation, causing them to fall into the second collection housing. This reduces the frequency of manual cleaning, improves production continuity, and keeps the filter screen clean, maintaining good filtration performance.

[0017] The fan and filter element of the fume filtration mechanism work together to filter the fumes generated during the melting process, reduce the emission of harmful impurities, protect the health of operators, reduce environmental pollution, and meet the requirements of environmentally friendly production. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0019] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0020] In the attached diagram: Figure 1 A schematic diagram of the shaft side structure of the melting machine after assembly is shown in this application; Figure 2 This application shows Figure 1 A schematic diagram of the axonal structure from an elevation viewpoint; Figure 3 An axonometric schematic diagram of the vertical cross-sectional structure of the melting body of this application is shown; Figure 4 This paper shows an axonometric schematic diagram of the transverse cross-sectional structure of the melting body of this application; Figure 5 This paper shows a schematic diagram of the fusion body's axial structure from an upward angle. Figure 6 An axonometric schematic diagram of a partial cross-sectional structure of the melt body of this application is shown; Figure 7 An axonometric schematic diagram of the cross-sectional structure of the smoke filtering mechanism of this application is shown; Figure 8 This paper shows a schematic diagram of the isolating body and impurity filtration mechanism of this application. Figure 9 This invention provides a schematic diagram of the first filter screen's cross-sectional tilt view from the axial side. Figure 10 An isometric view of the disassembled structure of the impurity filtration mechanism of this application is shown; Figure 11 A half-section schematic diagram of the impurity filtration mechanism of this application is shown.

[0021] List of reference numerals 1. Melting body; 101. Melter; 102. First drainage shell; 2. Conveying mechanism; 201. Electric motor; 202. Screw propeller; 3. Electromagnet; 4. First collecting shell; 5. Smoke filtration mechanism; 501. Second intake housing; 502. Filter element; 503. Positioning bolt; 504. Fan; 6. Impurity filtration mechanism; 601. Adjusting shaft; 602. First filter screen; 603. Second filter screen; 7. Rotating shaft; 701. Scraper; 8. Second collection shell. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1 to 11 : This invention proposes a filtration mechanism for a plastic raw material melting machine, comprising: a melting body 1, with a feeding funnel at the top of the melting body 1, into which the operator pours crushed plastic raw material; a flow-through hole with a bent structure is opened on one side of the melting body 1 at the top; a melter 101 and an electromagnet 3 are installed on the inner side of the melting body 1; bolt mounting holes are opened on both sides of the electromagnet 3, and bolts are installed at the bolt mounting holes to secure the electromagnet 3; a chamfer is provided at the top and bottom of the melter 101, which allows the melter 101 to better melt the plastic raw material; and a conveying mechanism 2 is installed at the top of the melting body 1. Component 2 consists of an electric motor 201 and a screw propeller 202. The electric motor 201 is installed on the outside of the melting body 1. The operator needs to install a set of bolts between the melting body 1 and the electric motor 201. After the bolts are installed, the electric motor 201 is secured. A horizontal screw propeller 202 is installed on the inside of the drain hole of the melting body 1. One side of the screw propeller 202 is connected to the drive shaft of the electric motor 201. The operator needs to refer to the wedge key structure of the prior art to securely assemble the drive shaft and the screw propeller 202. The operator controls the electric motor 201 to drive the screw propeller 202 to rotate. When the screw propeller 202 rotates, it can evenly transport the plastic raw material to the upper position of the melter 101. In this embodiment of the disclosure, reference is made to Figures 1 to 11 As shown, a first collecting shell 4 and a second collecting shell 8 are installed on the outer side of the melting body 1. A first draining shell 102 is provided on the inner side of the melting body 1. A discharge hole is opened on one side of the melting body 1. The discharge hole is connected to the first draining shell 102. The first draining shell 102 corresponds to the electromagnet 3. Therefore, the metal inside the first draining shell 102 can enter the interior of the first collecting shell 4 for collection in conjunction with the discharge hole. The inner side of the first draining shell 102 can be set as an inclined surface to allow the metal to enter the interior of the first collecting shell 4 more smoothly. In this embodiment of the disclosure, reference is made to Figures 1 to 11As shown, a set of positioning strips are installed on one side and the bottom of the melting body 1. The positioning strips are slide rail structures. An installation groove is opened on each side of the first collection shell 4. An installation groove is opened on each side of the top of the second collection shell 8. The installation grooves are T-shaped structures. The installation grooves correspond to the structures of the positioning strips. It can be concluded that after the first collection shell 4 and the second collection shell 8 are installed in the position of the positioning strips, the slide rail structure of the positioning strips can realize the effect of quick disassembly and assembly and stable installation of the first collection shell 4 and the second collection shell 8. An oval hole is opened at the bottom of the melting body 1. The oval hole is connected to the second collection shell 8. During the rotation of the scraper 701, the impurities on one side can be pushed into the oval hole. Then, under the action of gravity, the impurities can effectively enter the interior of the second collection shell 8 for collection. In this embodiment of the disclosure, reference is made to Figures 1 to 11 As shown, a smoke filtering mechanism 5 is installed above the melting body 1. The smoke filtering mechanism 5 consists of a second flow-inducing housing 501, a filter element 502, a positioning bolt 503, and a fan 504. There are two second flow-inducing housings 501. Two positioning holes are opened at the top of the melting body 1. The inner side of the positioning holes has a cylindrical stepped structure. The bottom of the second flow-inducing housing 501 is installed inside the two positioning holes respectively. After installation, the second flow-inducing housing 501 communicates with the interior of the melting body 1. The positioning holes achieve the effect of positioning the installation position of the second flow-inducing housing 501. A filter element 502 is installed inside the second flow-inducing housing 501. The filter structure of the filter element 502 is selected from existing technologies as needed. A positioning bolt 503 is installed between the two second flow-inducing housings 501. A support spring is installed on the outer side of the positioning bolt 503. A sliding hole is opened on one side of the fan 504, and the diameter of the sliding hole corresponds to that of the positioning bolt 503. The positioning bolt 503 passes through the inside of the sliding hole. After the positioning bolt 503 is installed, it achieves the effect of lateral stability of the fan 504. The fan 504 can switch positions around the positioning bolt 503 as the center point. When one of the filter elements 502 needs to be replaced, the fan 504 is switched to the top of another spare filter element 502. The support spring presses the bottom of the fan 504 and the top of the filter element 502 into close contact. The operator controls the fan 504 to rotate and draw the flue gas generated inside the melting body 1 outward. During this process, the filter element 502 filters the flue gas to prevent the flue gas from carrying harmful impurities and being directly discharged into the air. In this embodiment of the disclosure, reference is made to Figures 1 to 11As shown, a set of impurity filtering mechanisms 6 is installed at the bottom of the melting body 1. The impurity filtering mechanism 6 is composed of an adjusting shaft 601, a first filter screen 602, and a second filter screen 603. A rotating hole is opened at the bottom of the melting body 1. The rotating hole has a stepped structure. The edges of the first filter screen 602 and the second filter screen 603 extend into the interior of the rotating hole. The rotating hole achieves the effect of hiding the first filter screen 602 and the second filter screen 603 and lateral positioning of their rotation position. Two gears are installed on the outer side of the adjusting shaft 601. A set of meshing teeth is provided on one side of the second filter screen 603. The gears and meshing teeth mesh. A knob is provided at the bottom of the adjusting shaft 601. The operator needs to rotate the knob to control the rotation of the second filter screen 603. After the second filter screen 603 rotates, the filter hole between it and the first filter screen 602 will change. Therefore, by rotating the adjusting shaft 601, the size of the filter hole of the first filter screen 602 and the second filter screen 603 can be adjusted. In this embodiment of the disclosure, reference is made to Figures 1 to 11 As shown, a rotating shaft 7 is installed at the center of the first filter screen 602 and the second filter screen 603. A rotating hole is opened at the center of the first filter screen 602 and the second filter screen 603 respectively. The rotating shaft 7 passes through the interior of the rotating hole. Two scrapers 701 are installed on the outer side of the rotating shaft 7. A driving component of the prior art needs to be installed on the rotating shaft 7. The driving component is installed and bolted to the bottom of the melting body 1 for stability. With the help of the installed driving component, the rotating shaft 7 and the scrapers 701 are driven to rotate at a uniform speed. When rotating, the scrapers 701 can scrape away the impurities blocked by the first filter screen 602 and the second filter screen 603.

[0024] Example 2, based on Example 1, with reference to Figures 1 to 11 As shown, a set of existing activated carbon particles can be installed on the inner side of the filter element 502. The activated carbon particles can filter harmful substances in the flue gas again.

[0025] The working principle of this embodiment: First, the plastic raw material melting machine is assembled. The workers install the electromagnet 3 on the inside of the melting body 1 with bolts to ensure its stability. The melter 101 is installed and its chamfer direction is confirmed to be correct. The electric motor 201 is installed on the outside of the melting body 1 and fixed with bolts. The drive shaft of the electric motor 201 is connected to the screw propeller 202 with reference to the wedge key structure to ensure a stable connection. The workers installed the first collection shell 4 and the second collection shell 8 with the positioning strip on the melting body 1 through their mounting grooves to ensure that the installation is firm and easy to disassemble. The two second drainage shells 501 were installed in the positioning holes above the melting body 1 respectively. The filter element 502 was installed inside the second drainage shell 501. The positioning bolt 503 was passed through the sliding hole of the fan 504 and installed between the two second drainage shells 501. The support spring was installed on the outside of the positioning bolt 503 so that the fan 504 could switch positions around the positioning bolt 503 and the support spring could ensure that the fan 504 and the filter element 502 were in close contact. The workers extend the edges of the first filter screen 602 and the second filter screen 603 into the rotating hole at the bottom of the melting body 1, and install the adjusting shaft 601 to ensure that the gear meshes correctly with the meshing teeth of the second filter screen 603. Two scrapers 701 are installed on the outside of the rotating shaft 7, and the rotating shaft 7 is installed at the bottom of the melting body 1 by a drive component of the prior art, ensuring that the drive component is installed securely. The operator pours the crushed plastic raw material into the feeding funnel and starts the electric motor 201. The electric motor 201 drives the screw propeller 202 to rotate, and evenly conveys the plastic raw material to the position above the melter 101. The melter 101 is started and melts the plastic raw material. During the melting process, the electromagnet 3 is turned on to adsorb the metal impurities in the plastic raw material. Under the action of gravity and the inclined surface of the first diversion shell 102, these metal impurities enter the first collection shell 4 through the discharge hole and are collected. In the smoke filtration process, the operator starts the blower 504. The blower 504 rotates and draws the smoke generated inside the melting body 1 outward. The smoke is filtered through the filter element 502 to prevent smoke carrying harmful impurities from being directly discharged into the air. When the filter element 502 needs to be replaced, the blower 504 is moved around the positioning bolt 503 to the top of another spare filter element 502. The support spring ensures that the bottom of the blower 504 is in close contact with the top of the filter element 502 to ensure the continuity of the filtration operation. In the impurity filtration and cleaning process, the operator rotates the knob at the bottom of the adjusting shaft 601 according to the impurity condition of the plastic raw material. The rotation of the adjusting shaft 601 drives the gear, which in turn causes the second filter screen 603 to rotate, adjusting the size of the filter holes of the first filter screen 602 and the second filter screen 603 to meet different filtration needs. The drive unit of the rotating shaft 7 is activated, which drives the rotating shaft 7 and the scraper 701 to rotate at a constant speed. When the scraper 701 rotates, it scrapes away the impurities blocked by the first filter screen 602 and the second filter screen 603. The impurities are pushed into the oval hole and then enter the second collection housing 8 for collection under the action of gravity. The shutdown and cleaning steps of the plastic raw material melting machine are as follows: stop the driving components of the melter 101, electric motor 201, fan 504 and rotating shaft 7, disassemble the first collection housing 4 and the second collection housing 8, clean the collected metal impurities and other impurities, and replace the filter element 502 if necessary.

[0026] The following points should be noted in this article: 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0027] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0028] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. The filtration mechanism of the plastic raw material melting machine includes: The melting body (1), the smoke filtering mechanism (5), and the impurity filtering mechanism (6) are provided. A feeding funnel is provided at the top of the melting body (1). A flow-guiding hole is opened at the top of one side of the melting body (1). The flow-guiding hole has a bent structure. The melting body (1) is characterized by having a melting device (101) and an electromagnet (3) installed on the inner side. A bolt mounting hole is opened on both sides of the electromagnet (3). A chamfer is provided at the top and bottom of the melting device (101). A set of conveying mechanisms (2) is installed at the top of the melting body (1). The conveying mechanism (2) is composed of an electric motor (201) and a screw propeller (202). A first collection housing (4) and a second collection housing (8) are installed on the outer side of the melting body (1). A set of smoke filtering mechanisms (5) is installed on the upper part of the melting body (1). The smoke filtering mechanism (5) is composed of a second diversion housing (501), a filter element (502), a positioning bolt (503) and a fan (504). A set of impurity filtering mechanisms (6) is installed on the bottom of the melting body (1). The impurity filtering mechanism (6) is composed of an adjusting shaft (601), a first filter screen (602) and a second filter screen (603). A rotating shaft (7) is installed at the center of the first filter screen (602) and the second filter screen (603).

2. The filtration mechanism of the plastic raw material melting machine according to claim 1, characterized in that, The melting body (1) has a first flow-guiding shell (102) on its inner side. A discharge hole is opened on one side of the melting body (1). The discharge hole is connected to the first flow-guiding shell (102). The first flow-guiding shell (102) corresponds to the electromagnet (3).

3. The filtration mechanism of the plastic raw material melting machine according to claim 1, characterized in that, A set of positioning strips is installed on one side and the bottom of the melting body (1). An installation groove is opened on both sides of the first collecting shell (4). An installation groove is opened on both sides of the top of the second collecting shell (8). The installation grooves and positioning strips correspond in structure.

4. The filtration mechanism of the plastic raw material melting machine according to claim 1, characterized in that, The electric motor (201) is installed on the outer side of the melting body (1), and a transverse spiral propeller (202) is installed on the inner side of the drainage hole of the melting body (1). One side of the spiral propeller (202) is connected to the drive shaft of the electric motor (201).

5. The filtration mechanism of the plastic raw material melting machine according to claim 1, characterized in that, There are two second drainage housings (501). Two positioning holes are opened at the top of the melting body (1). The bottom of the second drainage housing (501) is installed inside the two positioning holes respectively. After installation, the second drainage housing (501) is connected to the interior of the melting body (1). A filter element (502) is installed on the inner side of the second drainage housing (501). A positioning bolt (503) is installed between the two second drainage housings (501).

6. The filtration mechanism of the plastic raw material melting machine according to claim 1, characterized in that, A support spring is installed on the outer side of the positioning bolt (503), and a sliding hole is opened on one side of the fan (504). The diameter of the sliding hole corresponds to that of the positioning bolt (503), and the positioning bolt (503) passes through the interior of the sliding hole.

7. The filtration mechanism of the plastic raw material melting machine according to claim 1, characterized in that, A rotating hole is opened at the bottom of the melting body (1). The edges of the first filter screen (602) and the second filter screen (603) extend into the interior of the rotating hole. Two gears are installed on the outer side of the adjusting shaft (601). A set of meshing teeth is provided on one side of the second filter screen (603). The gears and meshing teeth mesh. A knob is provided at the bottom of the adjusting shaft (601).

8. The filtration mechanism of the plastic raw material melting machine according to claim 1, characterized in that, A rotating hole is opened at the center of the first filter screen (602) and the second filter screen (603), and a rotating shaft (7) passes through the inside of the rotating hole. Two scrapers (701) are installed on the outside of the rotating shaft (7).

9. The filtration mechanism of the plastic raw material melting machine according to claim 1, characterized in that, An oval hole is opened at the bottom of the melting body (1), and the oval hole is connected to the second collection shell (8).

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