Engineering plastic suction device

Abstract

The utility model discloses an engineering plastic suction machine, including suction machine main part and assemble in the front end of suction machine main part's suction material box, the input of suction machine main part is equipped with suction material pipeline, the end of conveying pipeline is equipped with the connecting flange, and the conveying pipeline passes through the connecting flange and connects the suction material box, the top of suction material box is equipped with dust suction box, the top of dust suction box is equipped with dust suction pipe, and the top of dust suction pipe is equipped with dust suction machine, the setting of this engineering plastic suction machine, the structure design is reasonable, through setting dust suction system that dust suction pipe, dust suction machine constitutes in the top of suction material box, can in -time with the dust that produces in the suction material process inhale and collect, and the dust diffusion is reduced greatly. Among them, filtration assembly can filter the air that inhales, avoid dust direct discharge into the atmosphere, both protect the health of operator, and reduce the pollution to workshop environment, reduce dust to the erosion of equipment simultaneously, prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of material suction machine technology, specifically to an engineering plastic material suction machine. Background Technology

[0002] In the engineering plastics processing industry, material handling machines are key equipment for material conveying and are widely used to transport raw materials such as plastic granules and powders from storage devices to processing equipment (such as injection molding machines and extruders). Existing engineering plastic material handling machines typically consist of a material handling body, a conveying pipe, and a material handling component. Their core principle is to achieve material transfer through suction generated by negative pressure. However, existing material suction machines have several problems in practical use: First, they easily generate a large amount of dust during the suction process. When engineering plastic raw materials are transported, friction and collision between particles generate fine dust. This dust not only pollutes the workshop environment but may also be inhaled by operators, harming their health. Furthermore, dust adhering to the equipment surface can affect the normal operation and lifespan of the equipment. Second, the sealing of component connections is insufficient. The connections between the conveying pipe and the suction box, as well as dust-related components, often use simple plug-in or snap-fit ​​structures. After long-term use, gaps easily appear, leading to negative pressure leakage, reducing suction efficiency, and allowing dust to overflow from the gaps, exacerbating pollution. Third, the installation and maintenance of filter components are inconvenient. The filter structures in existing equipment are mostly fixed. When the filter screen is clogged or damaged, multiple components need to be disassembled for replacement or cleaning, increasing maintenance costs and downtime. Fourth, the overall stability and maintainability of the equipment structure need improvement. Some suction machines lack a stable support structure, which makes them prone to vibration during operation and affects the lifespan of the equipment; at the same time, the lack of a maintenance platform also makes daily maintenance of the equipment inconvenient. To address the aforementioned issues, there is an urgent need for an engineering plastics feeding machine that can effectively solve dust pollution, improve connection sealing, facilitate maintenance, and has a stable structure. Utility Model Content

[0003] The purpose of this invention is to provide an engineering plastics feeding machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an engineering plastic material suction machine, comprising a material suction machine body and a material suction box assembled at the front end of the material suction machine body; a material conveying pipe is assembled at the input end of the material suction machine body; a connecting flange is assembled at the end of the material conveying pipe, and the material conveying pipe is connected to the material suction box through the connecting flange; a dust collection box is assembled at the top of the material suction box, a dust collection pipe is assembled at the top of the dust collection box, and a vacuum cleaner is assembled at the top of the dust collection pipe; a connecting pipe is assembled at the drive end of the vacuum cleaner, and a sealing cover is assembled between the connecting pipe and the dust collection pipe.

[0005] As a preferred raw material mixing package for the production of anti-aging plastics according to this utility model, the dust suction pipe is inserted into the bottom opening of the sealing cover, the connecting pipe is inserted into the bottom opening of the sealing cover, and a filter assembly is assembled in the center of the interior of the sealing cover.

[0006] As a preferred raw material mixing package for the production of anti-aging plastics according to this utility model, the filter assembly includes a support ring and a filter ring. The filter ring is fitted with a filter screen plate. The support ring and the filter ring are provided with screw holes at both ends of their edges, and bolt bodies are screwed into the screw holes.

[0007] As a preferred raw material mixing package for the production of anti-aging plastics according to this utility model, the bottom end of the bolt body is provided with a circular groove, the bottom end of the circular groove is provided with a bolt rod, the bolt rod is screwed into the bolt hole, the upper outer end of the bolt rod is provided with a fixing ring, and the circumferential surface of the bolt rod is fitted with an annular pressure plate, a spring and an annular rubber sheet.

[0008] As a preferred raw material mixture for the production of anti-aging plastics according to this utility model, an extrusion block is installed at the upper edge of the annular rubber sheet, and the outer wall of the bolt body is provided with an arc surface, and the surface of the arc surface is provided with anti-slip texture.

[0009] As a preferred raw material mixing package for the production of anti-aging plastics according to this utility model, the outer wall of the dust suction pipe is provided with external threads, the inner wall of the sealing cover is provided with internal threads, the internal threads and external threads are matched, and a limit ring plate is installed at the end of the dust suction pipe located inside the sealing cover.

[0010] As a preferred embodiment of the raw material mixing package for anti-aging plastic production according to this utility model, the bottom of the main body of the suction machine is equipped with a support frame, and the top of the main body of the suction machine is equipped with a maintenance platform.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the design of this engineering plastic suction machine is reasonable; By installing a dust collection system consisting of a dust collection box, a dust collection pipe, and a vacuum cleaner at the top of the material suction box, dust generated during the material suction process can be sucked in and collected in a timely manner, significantly reducing dust diffusion. The filter component filters the sucked-in air, preventing dust from being directly released into the atmosphere. This protects the health of operators, reduces pollution to the workshop environment, minimizes dust corrosion of equipment, and extends equipment lifespan. Attached Figure Description

[0012] Figure 1 This is a front-view three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the suction pipe, sealing cover, and connecting pipe of this utility model; Figure 3 This is a schematic diagram of the filter assembly of this utility model; Figure 4 This is a schematic diagram of the bolt body of this utility model.

[0013] In the diagram: 1. Main body of the suction machine; 2. Support frame; 3. Maintenance platform; 4. Material conveying pipe; 5. Connecting flange; 6. Suction box; 7. Dust collection box; 8. Dust collection pipe; 9. Sealing cover; 10. Connecting pipe; 11. Dust collector; 12. Filter assembly; 13. Internal thread; 14. External thread; 15. Limiting ring plate; 16. Filter ring; 17. Bearing ring; 18. Bolt body; 19. Filter screen plate. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: In this technical solution, an engineering plastic material suction machine includes a material suction machine body 1 and a material suction box 6 assembled at the front end of the material suction machine body 1. The input end of the material suction machine body 1 is equipped with a material conveying pipe 4; the end of the material conveying pipe 4 is equipped with a connecting flange 5, and the material conveying pipe 4 is connected to the material suction box 6 through the connecting flange 5; the top of the material suction box 6 is equipped with a dust collection box 7, the top of the dust collection box 7 is equipped with a dust collection pipe 8, and the top of the dust collection pipe 8 is equipped with a vacuum cleaner 11; the drive end of the vacuum cleaner 11 is equipped with a connecting pipe 10, and a sealing cover 9 is assembled between the connecting pipe 10 and the dust collection pipe 8.

[0016] The main body of the suction machine 1, as the core power source of the entire equipment, typically integrates components such as a motor and a fan to generate strong negative pressure suction, enabling the suction and conveying of engineering plastics. The motor power selection needs to be determined based on actual suction requirements, with a common power range of 1-5 kW. For small processing workshops, a 1-2 kW motor is sufficient for general suction rates; while large production lines may require 3-5 kW or even higher power motors to ensure the suction volume per unit time. The conveying pipe 4 is generally made of wear-resistant and corrosion-resistant plastic materials, such as polypropylene (PP) or polyvinyl chloride (PVC). These materials not only effectively resist the friction of engineering plastic particles but also prevent pipe damage caused by chemical corrosion. The pipe diameter also affects suction efficiency; common pipe diameters are 38-63 mm. A larger diameter allows for a greater amount of material to pass through per unit time under the same negative pressure conditions. Assuming a small injection molding workshop, the motor power inside the main body 1 of the material suction machine is 1.5 kilowatts, and the conveying pipe 4 is made of PP material with a diameter of 38 mm. In actual operation, the material suction machine can pick up 0.5-1 cubic meters of engineering plastic granules per minute. The function of the connecting flange 5 is to enhance the stability and sealing of the connection between the conveying pipe 4 and the suction box 6. The connecting flange 5 is generally made of metal, such as stainless steel or carbon steel, to ensure sufficient strength and durability. Its dimensions must match the interface dimensions of the conveying pipe 4 and the suction box 6. Common flange standards range from DN25 to DN80 (DN here represents the nominal diameter). During installation, the connecting flange 5 is fixed to the conveying pipe 4 and the suction box 6 respectively using bolts. The number and specifications of the bolts will vary depending on the size of the flange; for example, a DN50 flange may require 4-8 M10-M12 bolts for tightening. To further improve the sealing performance, a sealing gasket, such as a rubber gasket or a spiral wound gasket, is usually added between the flanges. Rubber gaskets are low-cost and easy to install, suitable for general working conditions; spiral wound gaskets have better high-temperature and high-pressure resistance, suitable for more demanding working environments. In a medium-sized engineering plastics processing enterprise, the connecting flange 5 used is made of DN50 stainless steel, equipped with 6 M12 bolts, and the sealing gasket is made of nitrile rubber. In actual operation, after multiple pressure tests, this connection method can guarantee good sealing performance under a negative pressure environment of 0.3-0.5 MPa, with a leakage rate of less than 0.1%. The dust collection box 7 is mainly used to collect dust generated during the material suction process. Its internal structure should be designed to facilitate dust settling and collection. Generally, baffles are installed inside the dust collection box 7 to guide the airflow of dust, increasing the chance of dust colliding with the box walls and promoting faster settling. The suction pipe 8 is also made of wear-resistant and corrosion-resistant materials. Its diameter is usually slightly smaller than the material conveying pipe 4, commonly 25-50 mm. This is because the suction power of the vacuum cleaner 11 is relatively concentrated, and a smaller pipe diameter can meet the suction needs. The power selection of the vacuum cleaner 11 depends on the amount of dust generated during the material suction process and the suction range, generally between 0.5-2 kW. For engineering plastic processing scenarios with high dust generation, a 1.5-2 kW vacuum cleaner may be needed to ensure timely and effective dust removal. In a factory producing engineering plastic sheets, the dust collection box 7 is equipped with three baffles, the dust collection pipe 8 has a diameter of 32 mm, and the vacuum cleaner 11 has a power of 1 kW. Actual testing showed that during the material suction operation, the dust concentration in the workshop could be controlled below 10 mg / m³, meeting relevant national occupational health standards. The connecting pipe 10 connects the vacuum cleaner 11 and the sealing cover 9. Its material and diameter are similar to those of the vacuum cleaner hose 8. The sealing cover 9 plays a crucial role, ensuring a tight connection between the vacuum cleaner hose 8 and the connecting pipe 10 to prevent air leakage and maintain suction performance. The sealing cover 9 is typically made of elastic materials such as rubber or silicone, which offer good flexibility and sealing performance. Its shape is usually a cylindrical structure open at both ends. The inner diameter of the openings must precisely match the outer diameter of the vacuum cleaner hose 8 and the connecting pipe 10 to achieve a tight fit. During installation, sealant can be applied to the joints to further enhance the sealing effect. In a production workshop for engineering plastic granules, the sealing cover 9 is made of silicone, with an inner diameter tolerance controlled within ±0.2 mm. It fits tightly with the 32 mm outer diameter suction pipe 8 and connecting pipe 10. In actual operation, after airtightness testing, the leakage at this sealed connection point under the negative pressure of the vacuum cleaner is extremely low, almost negligible, effectively ensuring the efficient operation of the vacuum system.

[0017] In some technical solutions, the suction pipe 8 is inserted into the bottom opening of the sealing cover 9, the connecting pipe 10 is inserted into the bottom opening of the sealing cover 9, and the filter assembly 12 is installed in the center of the interior of the sealing cover 9.

[0018] The suction pipe 8 and the connecting pipe 10 are inserted into the bottom opening of the sealing cover 9. This insertion method is simple and convenient to install, but it requires high dimensional accuracy of the interface. To ensure good sealing, the insertion depth is generally not less than 20 mm. Sealing tape or sealant can also be wrapped around the interface. The function of the filter assembly 12 is to filter the air during the suction process, preventing dust and other impurities from entering the vacuum cleaner 11 and damaging the equipment. The filtration accuracy of the filter assembly 12 is crucial. Generally, an appropriate filtration accuracy is selected based on the size of the dust particles. For dust generated during the suction of engineering plastics, a common filtration accuracy is 1-5 microns. In a workshop processing engineering plastics for electronic appliance casings, the insertion depth of both the suction pipe 8 and the connecting pipe 10 is 25 mm, and they are sealed with sealant. The filtration accuracy of the filter assembly 12 is 3 microns. Testing showed that the dust content in the air filtered by the filter assembly 12 can be reduced to below 1 mg / m³, effectively protecting the vacuum cleaner 11 and extending its service life.

[0019] In some technical solutions, the filter assembly 12 includes a support ring 17 and a filter ring 16. A filter screen 19 is embedded inside the filter ring 16. Screw holes are opened at both ends of the edges of the support ring 17 and the filter ring 16, and bolt bodies 18 are screwed into the screw holes.

[0020] The support ring 17 and filter ring 16 are generally made of plastic or metal. Plastic materials have the advantages of being lightweight and low-cost, such as polyoxymethylene (POM); metal materials have higher strength and durability, such as aluminum alloy. The filter screen 19 is usually made of stainless steel or copper alloy, and its mesh size determines the filtration accuracy. The size of the screw hole and the specification of the bolt body 18 must match each other. Common screw holes are M6-M10, and the corresponding bolt body 18 is an M6-M10 bolt. The support ring 17 and filter ring 16 are connected together by the bolt body 18, which makes installation and disassembly convenient and facilitates the replacement of the filter screen 19. In a manufacturer of engineering plastics for automotive parts, the load-bearing ring 17 and filter ring 16 are made of POM material, while the filter screen 19 is made of stainless steel with a mesh size of 3 micrometers, M8 screw holes, and M8×20 stainless steel bolts for the bolt body 18. In actual use, this filter assembly exhibits stable structure, effectively filters dust, and the time required to replace the filter screen 19 is no more than 10 minutes, significantly improving equipment maintenance efficiency.

[0021] In some technical solutions, a circular groove 181 is provided at the bottom end of the bolt body 18, and a bolt rod 183 is installed at the bottom end of the circular groove 181. The bolt rod 183 is screwed into the bolt hole, and a retaining ring 186 is installed at the upper outer end of the bolt rod 183. An annular pressure plate 185, a spring 187, and an annular rubber sheet 182 are fitted on the circumferential surface of the bolt rod 183.

[0022] The circular groove 181 is designed to facilitate tightening or loosening of the bolt body 18 using tools such as an Allen wrench. The bolt shank 183's engagement with the threaded hole provides basic connection and fastening force. The retaining ring 186 is used to limit the axial position of the annular pressure plate 185, spring 187, and annular rubber sheet 182, ensuring they do not shift during operation. The annular pressure plate 185 is mainly used to evenly transmit the pressure of the spring 187 to the annular rubber sheet 182. Under the elastic force of the spring 187, the annular rubber sheet 182 fits tightly against the connection between the bearing ring 17 and the filter ring 16, providing a seal and preventing dust leakage. The elastic coefficient of the spring 187 needs to be selected according to the actual sealing requirements, generally between 5-15 N / mm. An excessively high elastic coefficient may make bolt tightening difficult, while an excessively low coefficient may not provide sufficient sealing pressure. In a certain engineering plastics modification plant, the bolt body 18, the round groove 181 adapted to a 5 mm Allen wrench, the bolt shank 183 is an M8×16 specification, and the spring 187 has an elastic coefficient of 10 N / mm. During equipment operation, after sealing performance testing, the dust leakage at the bolt connection point under a negative pressure environment of 0.2-0.4 MPa was less than 0.01 g / h, effectively ensuring the sealing effect of the filter assembly.

[0023] In some technical solutions, an extrusion block 184 is installed at the upper edge of the annular rubber sheet 182, and the outer wall of the bolt body 18 is provided with an arc surface 188, and the surface of the arc surface 188 is provided with anti-slip texture.

[0024] The function of the compression block 184 is to further enhance the sealing effect at the connection between the annular rubber sheet 182 and the bearing ring 17 and filter ring 16 under the pressure of the spring 187. The compression block 184 is generally made of high-hardness plastic or metal materials, such as nylon or aluminum alloy. The arc surface 188 of the outer wall of the bolt body 18 is designed to avoid scratching the operator during operation, and to reduce wear between the tool and the bolt when tightening or loosening the bolt. The anti-slip texture is designed to increase the friction when the operator holds the tool or directly operates the bolt, making it easier to tighten or loosen the bolt. The depth of the anti-slip texture is generally between 0.5-1 mm. In an engineering plastics injection molding workshop, the extrusion block 184 is made of nylon 66, and the anti-slip texture on the outer wall of the bolt body 18 is 0.8 mm deep. In actual operation, operators reported that using the bolt body 18 with anti-slip texture makes tightening or loosening bolts easier, and the extrusion block 184 effectively improves the sealing effect. After multiple inspections, no dust leakage was found at the connection point.

[0025] In some technical solutions, the outer wall of the suction pipe 8 is provided with an external thread 14, and the inner wall of the sealing cover 9 is provided with an internal thread 13. The internal thread 13 and the external thread 14 are matched, and a limiting ring plate 15 is installed at the end of the suction pipe 8 located inside the sealing cover 9.

[0026] The mating of the external thread 14 and the internal thread 13 enables the threaded connection between the suction pipe 8 and the sealing cover 9. This connection method offers good sealing performance and stability. The thread specifications are typically common metric threads, such as M20-M40, with the specific selection depending on the diameter of the suction pipe 8 and the sealing cover 9. The limiting ring 15 limits the insertion depth of the suction pipe 8 within the sealing cover 9, ensuring the accuracy and reliability of the threaded connection, while also preventing excessive insertion of the suction pipe 8 and damage to the internal structure of the sealing cover 9. The limiting ring 15 is generally made of metal, such as stainless steel, with a thickness between 2-5 mm. In a certain engineering plastic pipe manufacturing plant, the external thread of the vacuum cleaner pipe 8 is M30, and the internal thread of the sealing cover 9 matches it. The limiting ring plate 15 is made of 3 mm thick stainless steel. During installation, the insertion depth of the vacuum cleaner pipe 8 is precisely controlled within the design range by the limitation of the limiting ring plate 15. After pressure testing, the threaded connection part has good sealing performance and no leakage occurs under a negative pressure environment of 0.3-0.6 MPa.

[0027] In some technical solutions, a support frame 2 is installed at the bottom of the external part of the suction machine body 1, and a maintenance platform 3 is installed at the top of the suction machine body 1.

[0028] The support frame 2 serves to support the entire main body 1 of the material suction machine, ensuring the stability of the equipment during operation and reducing the impact of vibration. The support frame 2 is generally made of metal, such as angle steel or channel steel, and is fixed to the main body 1 of the material suction machine by welding or bolting. Its height design needs to be determined according to actual usage requirements, usually between 300-600 mm, to facilitate maintenance and cleaning of the bottom of the equipment by operators. The maintenance platform 3 provides operators with a safe and convenient operating platform for inspection and maintenance of components at the top of the main body 1 of the material suction machine. The area of ​​the maintenance platform 3 needs to be determined according to the top dimensions of the main body 1 of the material suction machine, generally 0.5-1.5 square meters. Guardrails should be installed along the edge of the platform, with a height of not less than 1050 mm, to ensure operator safety. The platform surface can be made of anti-slip patterned steel plate to increase friction and prevent operators from slipping. In a large engineering plastics production base, the support frame 2 of the main body 1 of the material suction machine is welded from No. 5 angle steel, with a height of 500 mm, and is fixed to the main body 1 of the material suction machine with 8 M16 bolts. The maintenance platform 3 has an area of ​​1 square meter, is made of 3 mm thick anti-slip patterned steel plate, and the guardrail is 1100 mm high. Actual use has verified that the support frame 2 can effectively reduce the vibration amplitude during equipment operation, controlling the vibration acceleration below 0.5g; the maintenance platform 3 has good anti-slip performance, ensuring safety and reliability for operators.

[0029] Working process and principle: I. Start-up Phase When the operator starts the equipment via the start button on the control box of the material suction machine body 1, the motor and fan inside the material suction machine body 1 begin to operate. The motor drives the fan to generate a strong negative pressure, which is transmitted to the suction box 6 through the material conveying pipe 4, preparing for subsequent material suction. At the same time, the vacuum cleaner 11 also starts synchronously (if a linkage control method is used), and its internal motor generates negative pressure, which is transmitted to the vacuum box 7 through the connecting pipe 10, the sealing cover 9, and the suction pipe 8, putting the vacuum system into working condition. II. Material intake and conveying process The suction box 6 is placed in the pile of engineering plastic raw materials. Under the negative pressure generated by the main body 1 of the suction machine, the raw materials are sucked into the suction box 6. Subsequently, the raw materials are transported to the main body 1 of the suction machine through the conveying pipe 4 (at this time, the conveying pipe 4 and the suction box 6 are tightly connected by the connecting flange 5 to ensure that the negative pressure does not leak). In this process, the wear-resistant material (such as PP or PVC) used in the conveying pipe 4 can effectively resist the friction of raw material particles and ensure long-term stable use of the pipe. The fan inside the main body 1 of the suction machine works continuously to maintain a stable negative pressure, so that the raw materials can be continuously transported. Its conveying rate is related to factors such as motor power and pipe diameter. For example, a 1.5 kW motor with a 38 mm diameter pipe can achieve a conveying rate of 0.5-1 cubic meters per minute. III. Dust Treatment Process During the process of material being sucked in and transported, a large amount of dust is generated. This dust enters the dust collection box 7 under the negative pressure generated by the vacuum cleaner 11. The baffle inside the dust collection box 7 guides the dust airflow, increases the collision between the dust and the box wall, and causes some of the dust to settle inside the dust collection box 7. The remaining dust enters the sealing cover 9 through the suction pipe 8. Inside the sealed cover 9, dust first passes through the filter assembly 12. The filter screen 19 (with a mesh size of 3 micrometers) in the filter assembly 12 intercepts the dust, and the filtered clean air enters the vacuum cleaner 11 through the connecting pipe 10 and is eventually discharged. The filter assembly 12 is fixed by bolts connecting the support ring 17 and the filter ring 16. The annular rubber sheet 182 of the bolt body 18 is tightly fitted under the action of the spring 187 to ensure that dust does not leak from the connection. At the same time, the suction pipe 8 and the sealed cover 9 are sealed by the cooperation of the internal thread 13 and the external thread 14, and the limiting ring plate 15 ensures that the connection position is accurate, further preventing dust leakage.

[0030] IV. Ensuring Stable Equipment Operation The support frame 2 at the bottom of the main body 1 of the suction machine (such as made of No. 5 angle steel, 500 mm high) provides stable support for the equipment, reduces vibration during operation (vibration acceleration is controlled below 0.5g), and ensures the stability of the connection of each component. The maintenance platform 3 (such as 1 square meter area, with 1100 mm high guardrail) provides a safe and convenient operating space for operators to conduct inspections and simple maintenance during equipment operation. V. Shutdown Phase When material conveying is complete or the machine needs to be stopped, the operator presses the stop button, and the motors of the material suction machine 1 and the dust collector 11 stop running, and the negative pressure gradually disappears. At this time, the material suction and dust collection processes stop, and the equipment can be cleaned or maintained, such as opening the dust discharge port at the bottom of the dust collection box 7 to clean the settled dust, or disassembling the filter assembly 12 to replace the filter screen 19, etc. The entire working process achieves material conveying and dust treatment through negative pressure transmission. The sealing design of each component (such as connecting flange 5, threaded connection, and filter component sealing) ensures the effective use of negative pressure and controllable dust treatment. The support frame 2 and maintenance platform 3 ensure the stable operation of the equipment and the convenience of maintenance.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An engineering plastic suction machine comprising a suction machine body (1) and a suction box (6) assembled at the front end of the suction machine body (1), characterized in that, The feeder body (1) is equipped with a feed pipe (4) at its input end. The end of the conveying pipe (4) is equipped with a connecting flange (5), and the conveying pipe (4) is connected to the suction box (6) through the connecting flange (5). The top of the suction box (6) is equipped with a dust collection box (7), the top of the dust collection box (7) is equipped with a dust collection pipe (8), and the top of the dust collection pipe (8) is equipped with a vacuum cleaner (11). The drive end of the vacuum cleaner (11) is equipped with a connecting pipe (10), and a sealing cover (9) is installed between the connecting pipe (10) and the suction pipe (8).

2. The engineering plastics feeding machine according to claim 1, characterized in that, The suction pipe (8) is inserted into the bottom opening of the sealing cover (9), the connecting pipe (10) is inserted into the bottom opening of the sealing cover (9), and the filter assembly (12) is assembled in the center of the interior of the sealing cover (9).

3. The engineering plastics feeding machine according to claim 2, characterized in that, The filter assembly (12) includes a support ring (17) and a filter ring (16). A filter screen plate (19) is embedded inside the filter ring (16). Screw holes are provided at both ends of the edges of the support ring (17) and the filter ring (16), and bolt bodies (18) are screwed into the screw holes.

4. The engineering plastics feeding machine according to claim 3, characterized in that, The bottom end of the bolt body (18) is provided with a circular groove (181), and a bolt rod (183) is installed at the bottom end of the circular groove (181). The bolt rod (183) is screwed into the bolt hole. A fixing ring (186) is installed on the upper outer end of the bolt rod (183). An annular pressure plate (185), a spring (187) and an annular rubber sheet (182) are fitted on the circumferential surface of the bolt rod (183).

5. The engineering plastics feeding machine according to claim 4, characterized in that, An extrusion block (184) is installed at the upper edge of the annular rubber sheet (182), and the outer wall of the bolt body (18) is provided with an arc surface (188), and the surface of the arc surface (188) is provided with anti-slip texture.

6. The engineering plastics feeding machine according to claim 2, characterized in that, The outer wall of the suction pipe (8) is provided with an external thread (14), and the inner wall of the sealing cover (9) is provided with an internal thread (13). The internal thread (13) and the external thread (14) are matched. A limiting ring plate (15) is installed at the end of the suction pipe (8) located inside the sealing cover (9).

7. The engineering plastics feeding machine according to claim 1, characterized in that, The bottom of the main body (1) of the suction machine is equipped with a support frame (2), and the top of the main body (1) of the suction machine is equipped with a maintenance platform (3).

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