Feeding equipment for plastic extruding machine

Abstract

The utility model relates to feeding equipment for a plastic extruding machine, the feeding equipment comprises a cleaning pool, a cleaning cage and a driving mechanism, the cleaning cage is rotatably arranged in the cleaning pool and is used for accommodating plastic particles, and the driving mechanism is connected with the cleaning cage and is used for driving the cleaning cage to rotate; the cleaning device comprises a cleaning pool, a driving mechanism, a cleaning cage and a spraying mechanism arranged above the cleaning cage, the spraying mechanism comprises a spraying part and a water supply system, and the spraying part is arranged above the cleaning cage and used for spraying the cleaning cage. Dust on the surfaces of plastic particles can be effectively cleaned through cooperation of the cleaning pool, the cleaning cage, the driving mechanism, the spraying part and the water supply system; and efficient and thorough cleaning of plastic particles is achieved, and therefore the influence of dust on the extrusion molding process is avoided. Therefore, the precision and the consistency of extrusion molding can be improved, the rate of defective products is reduced, the service life of the plastic extruding machine can be prolonged, and faults and maintenance cost caused by dust blockage are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of plastic production, and in particular to a feeding device for an extruder. Background Art

[0002] Extruder is an important plastic machine. Most of the production and manufacturing of plastic products can be realized by extrusion molding. Specifically, it is necessary to put the raw materials into the silo of the extruder, turn on the heating device for preheating, and then input the preheated plastic raw materials into the screw shaft of the extruder through the silo. Adjustments are made as needed so that the raw materials are heated, melted and extruded in the extruder and enter the mold for molding. The molded plastic products will be cooled and solidified by conveyor belts or other equipment, and finally the products will be inspected to ensure that their quality meets the requirements.

[0003] In the field of extruders, the feeding process of plastic pellets is one of the key links. Plastic pellets will inevitably adhere to some dust during storage, transportation and feeding. This dust usually comes from the dust in the raw material manufacturing and storage environment and the friction between particles. However, the presence of this dust will change the fluidity and uniformity of the plastic pellets, resulting in unstable feeding, which in turn affects the accuracy and consistency of extrusion molding. Secondly, dust may block the feed port or mold of the extruder, causing production interruption and machine failure.

[0004] According to Chinese patent CN202320529758.9, a feeding device for plastic particles for an extruder for cable processing is disclosed. The plastic particles are poured into a feed box, and the plastic particles slide along a feed pipe into a sieve plate, so that the plastic particles in the sieve plate are swayed left and right. Water is sprayed on the surface of the plastic particles by a sprayer to remove dust on the surface of the plastic particles. However, in actual operation, this cleaning method cannot maintain the continuity of cleaning and filtration, resulting in insufficient cleaning efficiency.

[0005] In view of the above problems, a feeding device for an extruder is now designed. Utility Model Content

[0006] An embodiment of the present application provides a feeding device for an extruder to solve the problem in the related art that plastic particles will inevitably adhere to some dust during storage, transportation and feeding. The presence of this dust will affect the accuracy and consistency of extrusion molding, and may also block the feed port or mold of the extruder, causing production interruption and machine failure.

[0007] In a first aspect, a feeding device for an extruder is provided, comprising: a cleaning tank, a cleaning cage and a driving mechanism, wherein the cleaning cage is rotatably arranged inside the cleaning tank and is used to contain plastic particles, and the driving mechanism is connected to the cleaning cage and is used to drive the cleaning cage to rotate;

[0008] A spray mechanism is arranged above the cleaning cage, the spray mechanism comprises a spray part and a water supply system, the spray part is arranged above the cleaning cage and is used for spraying the cleaning cage, and the water supply system is connected to the spray part for supplying water to the spray part.

[0009] The cleaning cage includes a rotating shaft, a plurality of support rods, a filter screen and a spiral blade. The rotating shaft is rotatably arranged inside the cleaning pool, a plurality of support rods are equidistantly arranged on the rotating shaft, the filter screen is sleeved on the outside of the rotating shaft, the other end of the support rod is connected to the filter screen, and the spiral blade is arranged inside the filter screen.

[0010] In some embodiments, a sewage tank is disposed at the bottom of the cleaning pool, both ends of the cleaning pool are open, and a receiving hopper located at the bottom of the cleaning cage is disposed at one end of the cleaning pool.

[0011] In some embodiments, a screw conveyor is further included, wherein the inlet of the screw conveyor is connected to the receiving hopper;

[0012] A plurality of water filtering holes are arranged on the shell of the screw conveyor.

[0013] In some embodiments, a plurality of air supply pipes are further included, and the plurality of air supply pipes are distributed along the length of the screw conveyor.

[0014] In some embodiments, the spray part includes a plurality of brackets, a plurality of pipe networks and a plurality of nozzles, wherein the plurality of brackets are arranged at equal distances above the cleaning cage along the length of the cleaning pool, the pipe networks are arranged on corresponding brackets, and the plurality of nozzles are respectively arranged at the bottom of the plurality of pipe networks.

[0015] In some embodiments, the water supply system includes a water pump, a delivery pipe and a plurality of transfer pipes, the water outlet of the water pump is connected to the delivery pipe, a plurality of transfer pipes are equidistantly arranged on the delivery pipe, and the other end of the transfer pipe is connected to the pipeline network.

[0016] In some embodiments, the driving mechanism includes a driving motor and a belt. The driving motor is disposed on the cleaning tank. A belt is connected between an output shaft of the driving motor and an outer side of a rotating shaft.

[0017] The embodiment of the present application provides a feeding device for an extruder, which can effectively clean the dust on the surface of plastic particles through the cooperation of a cleaning pool, a cleaning cage, a driving mechanism, a spraying part and a water supply system, thereby achieving efficient and thorough cleaning of plastic particles, thereby avoiding the influence of dust on the extrusion molding process. This can not only improve the accuracy and consistency of extrusion molding and reduce the defective product rate, but also extend the service life of the extruder and reduce the failure and maintenance costs caused by dust blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic diagram of a three-dimensional structure provided in an embodiment of the present application;

[0020] Figure 2 A front view provided for an embodiment of the present application;

[0021] Figure 3 A schematic diagram of the three-dimensional structure of a cleaning cage provided in an embodiment of the present application;

[0022] Figure 4 A schematic diagram of the three-dimensional structure of the spray mechanism provided in the embodiment of the present application;

[0023] Figure 5 A schematic diagram of the three-dimensional structure of the cleaning pool provided in an embodiment of the present application.

[0024] In the figure: 1. cleaning tank; 2. cleaning cage; 21. rotating shaft; 22. supporting rod; 23. filter screen; 24. spiral blade; 3. driving mechanism; 4. sewage tank; 5. spraying mechanism; 51. spraying part; 511. bracket; 512. pipeline network; 513. nozzle; 52. water supply system; 521. water pump; 522. conveying pipe; 523. transfer pipe; 6. receiving hopper; 7. screw conveyor; 8. air supply pipe. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0026] An embodiment of the present application provides a feeding device for an extruder, which can solve the problem in the related art that plastic particles will inevitably adhere to some dust during storage, transportation and feeding. The presence of this dust will affect the accuracy and consistency of extrusion molding, and may also block the feed port or mold of the extruder, causing production interruptions and machine failures.

[0027] See also Figure 1-Figure 3A feeding device for an extruder comprises: a cleaning tank 1, a cleaning cage 2, a driving mechanism 3 and a spraying mechanism 5 arranged above the cleaning cage 2, wherein the cleaning cage 2 is rotatably arranged inside the cleaning tank 1 and is used to accommodate plastic particles, and the driving mechanism 3 is connected to the cleaning cage 2 and is used to drive the cleaning cage 2 to rotate; the spraying mechanism 5 comprises a spraying part 51 and a water supply system 52, the spraying part 51 is arranged above the cleaning cage 2 and is used to spray the cleaning cage 2, and the water supply system 52 is connected to the spraying part 51 and is used to supply water to the spraying part 51.

[0028] When it is necessary to clean the plastic particles, first put the plastic particles containing dust into the cleaning cage 2. Then, start the driving mechanism 3 to make the cleaning cage 2 start to rotate. The rotating cleaning cage 2 can promote the uniform distribution of the plastic particles in the cleaning tank 1 and facilitate the mutual collision and friction between the particles, thereby preliminarily removing a part of the dust;

[0029] At the same time, the spray mechanism 5 arranged above the cleaning cage 2 starts to work, and the water supply system 52 provides a stable water source for the spray part 51, and the spray part 51 sprays the rotating cleaning cage 2 and the plastic particles inside. During the spraying process, the water flow can not only directly wash away the dust on the surface of the plastic particles, but also use the impact force of the water flow to further enhance the friction and collision between the particles, so as to remove the dust more thoroughly. After a period of rotation and spraying cleaning, the dust on the surface of the plastic particles is effectively removed, and the particles become cleaner. Subsequently, the cleaned plastic particles are sent to the subsequent extruder for molding processing.

[0030] Through this working principle, the extruder feeding equipment can effectively clean the dust on the surface of plastic particles, achieving efficient and thorough cleaning of plastic particles, thereby avoiding the influence of dust on the extrusion molding process. This can not only improve the precision and consistency of extrusion molding and reduce the defective product rate, but also extend the service life of the extruder and reduce the failure and maintenance costs caused by dust blockage. At the same time, the equipment is simple to operate and easy to maintain, and has high practicality and reliability.

[0031] It should be noted that the driving mechanism 3 in this embodiment includes a driving motor and a belt. The driving motor is arranged on the cleaning tank 1 , and a belt is connected between the output shaft of the driving motor and the outer side of the rotating shaft 21 .

[0032] Preferably, Figure 5 As shown, in order to improve the stability of the cleaning cage 2 during rotation, a guide roller is provided inside the cleaning pool 1 in this embodiment for relative rotation, and the outer side of the roller contacts the outer side of the cleaning cage 2 for supporting and guiding the cleaning cage 2 during rotation.

[0033] The driving mechanism 3 is mainly composed of a driving motor and a belt. The driving motor is fixed to the side wall of the cleaning tank 1 by bolts and a base, and the belt is connected between the output shaft of the driving motor and the outer side of the rotating shaft 21. In actual use, the driving motor serves as the power source of the entire driving mechanism 3. When the driving motor is started, it can transmit power to the rotating shaft 21 through the belt, so that the cleaning cage 2 starts to rotate.

[0034] Specifically, Figure 3 As shown, the cleaning cage 2 in this embodiment includes a rotating shaft 21, a plurality of support rods 22, a filter 23 and a spiral blade 24, the rotating shaft 21 is rotatably arranged inside the cleaning pool 1, a plurality of the support rods 22 are equidistantly arranged on the rotating shaft 21, the filter 23 is sleeved on the outside of the rotating shaft 21, the other end of the support rod 22 is connected to the filter 23, the spiral blade 24 is arranged inside the filter 23, wherein the filter 23 is cylindrical and has openings at both ends, and the aperture of the filter 23 is not larger than the aperture of the plastic particles.

[0035] Firstly, the design of the cleaning cage 2 combines multiple parts such as the rotating shaft 21, the support rod 22, the filter screen 23 and the spiral blade 24 to form an efficient and multifunctional cleaning structure.

[0036] The rotating shaft 21 is used as a driving component, so that the entire cleaning cage 2 can rotate inside the cleaning tank 1, providing power for cleaning the plastic particles;

[0037] The support rods 22 are arranged at equal distances on the rotating shaft 21, which not only supports the filter screen 23, but also enhances the overall structural stability of the cleaning cage 2. This design allows the cleaning cage 2 to remain stable during the rotation process, avoiding damage or poor cleaning effect caused by structural instability;

[0038] The filter screen 23 is sleeved on the outside of the rotating shaft 21 and connected to the rotating shaft 21 through the support rod 22, forming a cylindrical structure. The aperture of the filter screen 23 is not larger than the aperture of the plastic particles. This design ensures that the plastic particles will not leak out of the filter screen 23 during the cleaning process, while allowing water and dust to pass through, thereby achieving effective cleaning and filtering of the plastic particles.

[0039] The spiral blade 24 is arranged inside the filter 23. When the cleaning cage 2 rotates, the spiral blade 24 can push the plastic particles to move inside the filter 23, increasing the collision and friction between the particles, thereby improving the cleaning effect. This design not only makes the cleaning more uniform and thorough, but also allows the plastic particles to move forward along one end of the filter 23, which is conducive to the feeding of the cleaned plastic particles.

[0040] Preferably, Figure 1As shown, in this embodiment, a sewage tank 4 is arranged at the bottom of the cleaning pool 1, both ends and the bottom of the cleaning pool 1 are open, and a receiving hopper 6 located at the bottom of the cleaning cage 2 is arranged at one end of the cleaning pool 1.

[0041] By arranging the sewage tank 4 at the bottom of the cleaning pool 1, the sewage generated during the cleaning process can be conveniently collected and stored, thereby avoiding the problem of sewage overflow and environmental pollution.

[0042] Secondly, the opening design at both ends of the cleaning pool 1 makes it convenient for the staff to add plastic particles into the cleaning cage 2, and also facilitates the installation, disassembly and maintenance of the cleaning cage 2.

[0043] In addition, a receiving hopper 6 is provided at one end of the cleaning pool 1, located at the bottom of the cleaning cage 2, so that the cleaned plastic particles can be easily collected and discharged. The design of the receiving hopper 6 makes the discharge process of the plastic particles smoother and more efficient, and avoids the scattering and loss of particles during the discharge process.

[0044] It should be noted that U-shaped brackets are provided at both ends of the cleaning pool 1 in this embodiment, and both ends of the rotating shaft 21 are rotatably connected to the corresponding U-shaped brackets respectively. One end of the rotating shaft 21 extends to the outside of the U-shaped bracket, and a groove is provided on the outer surface of this end of the rotating shaft 21. The installation of the belt is facilitated by extending one end of the rotating shaft 21 to the outside of the U-shaped bracket and the groove thereon.

[0045] As a preferred embodiment, Figure 2 As shown, the present embodiment also includes a screw conveyor 7, the inlet of which is connected to the receiving hopper 6; a plurality of water filtering holes are provided on the outer shell of the screw conveyor 7, wherein the feed port of the receiving hopper 6 is located at the bottom of the cleaning cage 2, and the discharge port of the receiving hopper 6 is connected to the inlet of the screw conveyor 7.

[0046] The main function of the screw conveyor 7 is to convey the plastic particles from the receiving hopper 6 to the silo inside the extruder.

[0047] In actual operation, after cleaning, the plastic particles are collected at one end of the cleaning cage and enter the screw conveyor 7 through the receiving hopper. The screw conveyor 7 rotates the internal spiral blades to push the particles forward smoothly and continuously, and transports the plastic particles from the receiving hopper 6 to the silo of the extruder. In addition, during the transportation process, the water filter hole design on the outer shell of the screw conveyor allows excess water to be discharged, ensuring that the transported plastic particles are dry and free of water residue.

[0048] In another embodiment, if Figure 2As shown, the present embodiment also includes a plurality of air supply pipes 8, which are distributed along the length of the screw conveyor 7, wherein one end of the air supply pipe 8 opens toward the screw conveyor 7, and the other end thereof is connected to an external air supply duct.

[0049] One end of the air supply pipe 8 opens toward the screw conveyor 7 so that it can directly blow air to the plastic particles being transported, and the other end is connected to the external air supply duct to ensure a stable air supply. Hot air can be provided to the air supply pipe 8 as needed.

[0050] When the screw conveyor is working, the plastic particles move forward under the push of the spiral blades. At the same time, the air flow released by the air supply duct blows on the particles, taking away the moisture and heat on the surface of the particles, achieving the effect of drying and cooling.

[0051] In addition, the number and distribution positions of the air supply ducts can be flexibly adjusted according to the length of the screw conveyor and the material characteristics to ensure that the air flow can act evenly and effectively on the plastic particles being transported.

[0052] Specifically, if Figure 4 As shown, the spray part 51 in this embodiment includes a plurality of brackets 511, a plurality of pipe networks 512 and a plurality of nozzles 513. The plurality of brackets 511 are arranged at equal distances above the cleaning cage 2 along the length of the cleaning pool 1. The pipe networks 512 are arranged on corresponding brackets 511. The plurality of nozzles 513 are respectively arranged at the bottom of the plurality of pipe networks 512. The pipe networks 512 are connected with the nozzles 513. The pipe networks 512 are formed by welding a plurality of transversely arranged water pipes and a plurality of longitudinally arranged water pipes to each other, and the water pipes are connected to each other.

[0053] The brackets 511 are arranged above the cleaning cage 2 at equal distances along the length direction of the cleaning pool 1, ensuring that the spray range can cover the entire cleaning cage without blind spots. At the same time, they support the pipe network 512 and ensure the structural stability of the spray part 51. Secondly, the pipe network 512 is formed by welding a number of water pipes arranged horizontally and a number of water pipes arranged vertically. This mesh structure allows the water pipes to communicate with each other, ensuring that the water flow can be evenly distributed to each nozzle 513.

[0054] In actual operation, when the water in the water supply system 52 flows through the pipe network 512 , it will be sprayed out through the nozzle 513 to form a fine water mist or water flow to spray and clean the plastic particles in the cleaning cage 2 .

[0055] It should be noted that the number and layout of the nozzles can be adjusted according to the size of the cleaning cage and the cleaning requirements to achieve the best cleaning effect.

[0056] Specifically, if Figure 4As shown, the water supply system 52 in this embodiment includes a water pump 521, a delivery pipe 522 and a plurality of transfer pipes 523, the water outlet of the water pump 521 is connected to the delivery pipe 522, a plurality of transfer pipes 523 are equidistantly arranged on the delivery pipe 522, the other end of the transfer pipe 523 is connected to the pipeline network 512, and the water inlet of the water pump 521 is connected to an external water supply pipeline.

[0057] In actual use, the water pump 521 serves as the power source of the water supply system, and its water outlet is connected to the delivery pipe 522. When the water pump 521 is started, the water in the external pipeline is delivered to the delivery pipe 522. After being diverted by a number of transfer pipes 523, the water flows into the pipeline network 512 through the transfer pipes 523 and is sprayed out from the nozzle 513 to form a uniform water mist or water flow covering the plastic particles.

[0058] It should be noted that the design of the transfer tube 523 in this embodiment needs to take into account the layout of the pipeline network and the number of nozzles to ensure that each nozzle can obtain sufficient water flow. At the same time, the connection of the transfer tube needs to be sealed reliably to prevent water leakage.

[0059] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0060] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0061] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A feeding device for an extruder, characterized in that: include: A cleaning tank (1), a cleaning cage (2) and a driving mechanism (3), wherein the cleaning cage (2) is rotatably arranged inside the cleaning tank (1) and is used to contain plastic particles, and the driving mechanism (3) is connected to the cleaning cage (2) and is used to drive the cleaning cage (2) to rotate; A spray mechanism (5) is arranged above the cleaning cage (2), the spray mechanism (5) comprising a spray portion (51) and a water supply system (52), the spray portion (51) being arranged above the cleaning cage (2) and used for spraying the cleaning cage (2), the water supply system (52) being connected to the spray portion (51) and used for supplying water to the spray portion (51).

2. A feeding device for an extruder as claimed in claim 1, characterized in that: The cleaning cage (2) comprises a rotating shaft (21), a plurality of supporting rods (22), a filter screen (23) and a spiral blade (24); the rotating shaft (21) is rotatably arranged inside the cleaning pool (1); a plurality of supporting rods (22) are equidistantly arranged on the rotating shaft (21); the filter screen (23) is sleeved on the outside of the rotating shaft (21); the other end of the supporting rod (22) is connected to the filter screen (23); and the spiral blade (24) is arranged inside the filter screen (23).

3. A feeding device for an extruder as claimed in claim 1, characterized in that: A sewage tank (4) is provided at the bottom of the cleaning pool (1); both ends of the cleaning pool (1) are open; and a receiving hopper (6) located at the bottom of the cleaning cage (2) is provided at one end of the cleaning pool (1).

4. A feeding device for an extruder as claimed in claim 3, characterized in that: It also includes a screw conveyor (7), the inlet of the screw conveyor (7) is connected to the receiving hopper (6); The outer shell of the screw conveyor (7) is provided with a plurality of water filtering holes.

5. A feeding device for an extruder as claimed in claim 4, characterized in that: It also includes a plurality of air supply pipes (8), which are distributed along the length of the screw conveyor (7).

6. A feeding device for an extruder as claimed in claim 1, characterized in that: The spraying part (51) comprises a plurality of brackets (511), a plurality of pipe networks (512) and a plurality of nozzles (513); the plurality of brackets (511) are arranged above the cleaning cage (2) at equal distances along the length of the cleaning pool (1); the pipe networks (512) are arranged on corresponding brackets (511); and the plurality of nozzles (513) are respectively arranged at the bottom of the plurality of pipe networks (512).

7. A feeding device for an extruder as claimed in claim 6, characterized in that: The water supply system (52) comprises a water pump (521), a delivery pipe (522) and a plurality of transfer pipes (523); a water outlet of the water pump (521) is connected to the delivery pipe (522); a plurality of transfer pipes (523) are arranged on the delivery pipe (522) at equal distances; and the other end of the transfer pipe (523) is connected to the pipeline network (512).

8. A feeding device for an extruder as claimed in claim 2, characterized in that: The driving mechanism (3) comprises a driving motor and a belt. The driving motor is arranged on the cleaning tank (1). A belt is connected between the output shaft of the driving motor and the outer side of the rotating shaft (21).

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