Waste recycling and crushing structure for injection molding of MPP pipe fitting

Abstract

The utility model discloses a waste recycling and smashing structure for MPP pipe fitting injection molding, and belongs to the technical field of MPP pipe fitting waste smashing and recycling. According to the technical scheme, the waste recycling and smashing structure is characterized in that the waste recycling and smashing structure comprises a treatment box, the bottom of the treatment box is communicated with a feeding hopper, and a controller is arranged on the front side of the treatment box. The heating and crushing structure primarily softens and crushes MPP pipe waste added into the treatment box, the hardness of the MPP pipe waste is reduced, the primary crushing effect is improved, the crushed waste falls, a crushing motor of the crushing mechanism drives a shaft rod, a fixing sleeve and a crushing cutter for further crushing, during crushing, the waste is screened through a screen, and qualified waste falls to the bottom of the treatment box, so that the crushing efficiency is improved. And unqualified waste materials are left on the screen to be continuously crushed until the particle size requirement is met, so that the crushing uniformity is effectively improved, the problems that the waste materials are not uniform in particle and need to be circularly crushed are solved, and the recovery quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste crushing and recycling of MPP pipe fittings, and particularly relates to a waste recycling and crushing structure for injection molding of MPP pipe fittings. Background Art

[0002] Due to its excellent electrical insulation, high heat distortion temperature and low temperature impact performance, MPP pipe fittings are widely used in fields such as power cable laying and municipal engineering. During the injection molding process of MPP pipe fittings, a large amount of waste will inevitably be generated. If such waste is not recycled, it will not only lead to waste of resources, but also cause environmental pollution.

[0003] In the recycling process of existing waste recycling devices for MPP corrugated power pipes, due to the relatively hard texture of MPP corrugated power pipes, it is inconvenient to break them, which reduces the recycling efficiency. Moreover, the existing recycling devices are not convenient to adjust and control the degree of crushing, so it is difficult to meet different recycling requirements;

[0004] The existing patent (Publication No.: CN213766702U) discloses a waste recycling device for MPP corrugated power pipe production. This utility model has a reasonable structure, solves the problems existing in the prior art, and is worthy of promotion.

[0005] In view of the above problems, the existing patent gives a solution. However, although the degree of crushing is controlled by adjusting the distance between two crushing rollers in the above patent, when actually crushing MPP pipe waste, due to complex factors such as the force on the material, there will still be uneven particulate matter and different sizes of crushed particles in the crushed waste. Moreover, there are also problems with the subsequent screening method for the crushed waste. The crushed waste falls onto the filter plate and is vibrated by the vibration of the filter plate for screening. The qualified ones fall into the collection box for recycling, and the larger ones are discharged from the discharge port and then put into the feeding hopper for treatment. This process requires repeated operations of feeding, crushing, and screening, which not only consumes a lot of time and increases the time cost, but also increases the energy consumption due to the frequent handling and transportation of materials by the equipment. At the same time, it involves the coordinated work of many components, has a complex structure, increases the manufacturing and maintenance costs, and is prone to failures affecting normal operation, which is not conducive to practical use.

[0006] Therefore, a waste recycling and crushing structure for injection molding of MPP pipe fittings is proposed. Summary of the Utility Model

[0007] The purpose of the present utility model is to provide a waste recycling and crushing structure for injection molding of MPP pipe fittings, which can solve the problems in the above patent. Although the crushing degree is controlled by adjusting the distance between two crushing rollers, when actually crushing MPP pipe waste, due to complex forces on the material and other factors, the particulate matter of the crushed waste is still uneven and the size of the crushed particles is different. Moreover, there are also problems with the subsequent screening method for the crushed waste. The crushed waste falls onto the filter plate and is vibrated by the vibration of the filter plate. The qualified ones fall into the collection box for recycling, and the larger ones are discharged through the discharge port and then put into the feeding hopper for treatment. This process requires repeated operations of feeding, crushing, and screening, which not only consumes a large amount of time and increases the time cost, but also increases the energy consumption due to the frequent handling and transportation of materials by the equipment. At the same time, it involves the collaborative work of many components, with a complex structure, increasing the manufacturing and maintenance costs, and is also prone to failures affecting normal operation, which is not conducive to actual use.

[0008] To achieve the above object, the present utility model provides the following technical solutions: A waste recycling and crushing structure for injection molding of MPP pipe fittings, including a processing box, a feeding hopper is connected to the bottom of the processing box, a controller is arranged on the front side of the processing box, a heating and crushing structure is arranged on the top side inside the processing box, a crushing mechanism is arranged in the middle of the processing box, and a feeding structure is arranged at the bottom of the processing box;

[0009] The crushing mechanism includes fixing plates fixedly connected to the middle of both sides inside the processing box, a screen is slidably connected to the inner side of the fixing plates, the front side of the screen penetrates through the front side inside the processing box, the front side of the screen is bolted to the front side of the processing box, a crushing motor is bolted to the rear side of the processing box, the output end of the crushing motor penetrates through the rear side of the processing box, a shaft rod is fixedly connected to the output end of the crushing motor, a fixing sleeve is bolted to the outer side of the shaft rod, and a crushing knife is fixedly connected to the outer side of the fixing sleeve. The crushing knife is located on the top of the screen.

[0010] Preferably, the heating and crushing structure includes a crushing motor bolted to the top of the rear side of the processing box. The crushing motor is electrically connected to the controller, and the output end of the crushing motor penetrates through the rear side of the processing box.

[0011] Preferably, a crushing cylinder is fixedly connected to the output end of the crushing motor. The crushing cylinder is located on both sides inside the processing box, and crushing teeth are fixedly connected to the outer side of the crushing cylinder.

[0012] Preferably, heating cylinders are fixedly connected to both sides of the front side inside the processing box. The heating cylinders are located inside the crushing cylinder, and electric heating tubes are arranged inside the heating cylinders. The electric heating tubes are electrically connected to the controller.

[0013] Preferably, the feeding structure includes a discharge port opened at the bottom of the front side of the processing box. A feeding motor is bolted to the rear side of the processing box. The feeding motor is electrically connected to the controller, and the output end of the feeding motor penetrates through the rear side of the processing box.

[0014] Preferably, the output end of the feeding motor is fixedly connected to a connecting shaft, and a spiral feeding blade is fixedly connected to the outer side of the connecting shaft. The spiral feeding blade is located at the bottom side inside the processing box and is behind the discharge port.

[0015] Preferably, a discharge pipe is fixedly connected inside the discharge port, and the discharge pipe is located in front of the spiral feeding blade.

[0016] Preferably, legs are fixedly connected to the four corners of the bottom of the processing box, and a reinforcement plate is fixedly connected to the bottom of the legs.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] 1. In this application, by setting the heating and crushing structure and the crushing mechanism, the heating and crushing structure first performs preliminary softening and crushing on the MPP pipe waste added into the processing box, reduces its hardness, and improves the preliminary crushing effect. The crushed waste falls, and the crushing motor of the crushing mechanism drives the shaft rod, the fixed sleeve and the crushing knife to further crush. During crushing, the screen sieves the waste. The qualified ones fall to the bottom of the processing box, and the unqualified ones remain on the screen and continue to be crushed until they meet the particle size requirements, effectively improving the crushing uniformity, solving the problems of uneven waste particles and the need for cyclic crushing, and improving the recycling quality. In addition, in actual use, the screen can be replaced as needed. When crushing materials with different particle sizes are required, the screen can be simply disassembled and replaced to quickly adjust the screening standard, meeting the diverse production needs and enhancing the adaptability and practicality of the equipment;

[0019] 2. In this application, by setting the feeding structure, the waste with uniform particle size falling on the bottom side inside the processing box can be efficiently conveyed out of the processing box, facilitating subsequent collection work and making the entire waste recycling process smoother and more efficient. Description of the Drawings

[0020] Figure 1 It is the overall structure diagram of the waste recycling and crushing structure for MPP pipe fittings injection molding of the present utility model;

[0021] Figure 2 It is the structure diagram of the processing box of the present utility model;

[0022] Figure 3 It is the structure diagram of the heating and crushing structure of the present utility model;

[0023] Figure 4 It is the structure diagram of the crushing mechanism of the present utility model;

[0024] Figure 5 This is the structural diagram of the material conveying structure of the present utility model.

[0025] In the figure, 1 is a processing box; 2 is a feeding hopper; 3 is a controller; 4 is a heating and crushing structure; 41 is a crushing motor; 42 is a crushing cylinder; 43 is a crushing tooth; 44 is a heating cylinder; 45 is an electric heating pipe; 5 is a pulverizing mechanism; 51 is a fixing plate; 52 is a screen; 53 is a pulverizing motor; 54 is a shaft rod; 55 is a fixing sleeve; 56 is a pulverizing knife; 6 is a material conveying structure; 61 is a discharge port; 62 is a material conveying motor; 63 is a connecting shaft; 64 is a spiral material conveying blade; 7 is a discharge pipe; 8 is a support leg. Specific embodiments

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5 , the present utility model provides a technical solution:

[0028] A waste recycling and pulverizing structure for injection molding of MPP pipe fittings includes a processing box 1, a feeding hopper 2 is connected to the bottom of the processing box 1, a controller 3 is arranged on the front side of the processing box 1, a heating and crushing structure 4 is arranged on the top side inside the processing box 1, a pulverizing mechanism 5 is arranged in the middle of the processing box 1, and a material conveying structure 6 is arranged at the bottom of the processing box 1;

[0029] The pulverizing mechanism 5 includes fixing plates 51 fixedly connected to the middle of both sides inside the processing box 1, a screen 52 is slidably connected to the inner sides of the fixing plates 51, the front side of the screen 52 penetrates through the front side inside the processing box 1, the front side of the screen 52 is bolted to the front side of the processing box 1, a pulverizing motor 53 is bolted to the rear side of the processing box 1, the output end of the pulverizing motor 53 penetrates through the rear side of the processing box 1, the output end of the pulverizing motor 53 is fixedly connected to a shaft rod 54, a fixing sleeve 55 is bolted to the outer side of the shaft rod 54, and a pulverizing knife 56 is fixedly connected to the outer side of the fixing sleeve 55, and the pulverizing knife 56 is located on the top of the screen 52.

[0030] In this embodiment: By setting up a heating and crushing structure 4, a crushing mechanism 5, and a feeding structure 6, the waste materials from the injection molding of MPP pipe fittings are put into the processing box 1 through the feeding hopper 2 at the top. The heating and crushing structure 4 first softens and crushes them preliminarily, reducing the hardness of the materials and improving the crushing effect. The waste materials after preliminary crushing fall. The controller 3 starts the crushing motor 53, driving the shaft rod 54, the fixed sleeve 55, and the crushing knives 56 to further crush. During crushing, the screen 52 screens the waste materials. The qualified ones fall to the bottom of the processing box 1, and the unqualified ones remain on the top of the screen 52 and continue to be crushed until they meet the particle size requirements. When different particle size materials are needed, the screen 52 can be simply replaced to adjust the screening criteria to meet the diverse production needs. Finally, the feeding structure 6 efficiently outputs the waste materials with uniform particle size at the bottom of the processing box 1, facilitating subsequent collection, making the entire waste material recycling process smoother and more efficient, improving the quality of waste material recycling, and enhancing the adaptability and practicality of the equipment in actual applications.

[0031] Specifically, as Figure 3 shown, the heating and crushing structure 4 includes a crushing motor 41 bolted to the top of the rear side of the processing box 1. The crushing motor 41 is electrically connected to the controller 3, and the output end of the crushing motor 41 penetrates through the rear side of the processing box 1.

[0032] Specifically, as Figure 3 shown, the output end of the crushing motor 41 is fixedly connected to a crushing cylinder 42. The crushing cylinder 42 is located on both sides inside the processing box 1, and crushing teeth 43 are fixedly connected to the outer side of the crushing cylinder 42.

[0033] Specifically, as Figure 3 shown, heating cylinders 44 are fixedly connected to both sides of the front side inside the processing box 1. The heating cylinders 44 are located inside the crushing cylinder 42, and electric heating tubes 45 are arranged inside the heating cylinders 44. The electric heating tubes 45 are electrically connected to the controller 3.

[0034] In this embodiment: By setting up the heating and crushing structure 4, when processing MPP pipe waste materials, the operator manipulates the controller 3 to start the crushing motor 41 to work. Its output end drives the crushing cylinder 42 to rotate at high speed, and the crushing teeth 43 on the outer side of the crushing cylinder 42 rotate accordingly. At the same time, the controller 3 controls the electric heating tubes 45 in the heating cylinders 44 to energize and generate heat. After the MPP pipe waste materials enter the processing box 1, affected by the heat dissipated by the heating cylinders 44, they are preliminarily softened. While the waste materials are being softened, under the high-speed hitting and tearing action of the crushing teeth 43, they are preliminarily crushed. This design of synchronizing heating and crushing, on the one hand, uses heating to reduce the hardness of the waste materials, making the crushing process easier and more efficient, reducing the energy consumption of the crushing motor 41. On the other hand, when the crushing teeth 43 rotate at high speed, they can act more evenly on the softened waste materials, improving the uniformity of preliminary crushing and laying a good foundation for subsequent fine crushing, effectively avoiding the problem of poor final crushing effect caused by too hard waste materials and uneven initial crushing.

[0035] Specifically, as Figure 5 shown, the feeding structure 6 includes a discharge port 61 opened at the bottom of the front side of the processing box 1. A feeding motor 62 is bolted to the rear side of the processing box 1. The feeding motor 62 is electrically connected to the controller 3, and the output end of the feeding motor 62 penetrates through the rear side of the processing box 1.

[0036] Specifically, as Figure 5 shown, the output end of the feeding motor 62 is fixedly connected to a connecting shaft 63. A spiral feeding blade 64 is fixedly connected to the outside of the connecting shaft 63. The spiral feeding blade 64 is located at the bottom side inside the processing box 1 and is behind the discharge port 61.

[0037] In this embodiment: By setting the feeding structure 6, when the crushed MPP pipe waste is screened and qualified by the screen 52 and falls to the bottom side inside the processing box 1, the controller 3 controls the feeding motor 62 to start. The output end of the feeding motor 62 drives the connecting shaft 63 to rotate, and the spiral feeding blade 64 outside the connecting shaft 63 rotates accordingly. During the rotation of the spiral feeding blade 64, the waste located at the bottom of the processing box 1 is continuously pushed forward, making it move towards the discharge port 61, realizing continuous and efficient feeding of the waste, avoiding the accumulation of waste at the bottom of the processing box 1. This feeding method not only improves the efficiency of discharging the waste from the processing box 1, but also ensures the stable and uniform discharge of the waste, facilitating the accurate collection by the subsequent collection equipment, making the connection of the entire waste recycling process more compact, and greatly improving the overall efficiency of waste recycling and treatment.

[0038] Specifically, as Figure 1 shown, a discharge pipe 7 is fixedly connected inside the discharge port 61, and the discharge pipe 7 is located in front of the spiral feeding blade 64.

[0039] Specifically, as Figure 1 shown, legs 8 are fixedly connected to the four corners of the bottom of the processing box 1, and a reinforcing plate is fixedly connected to the bottom of the legs 8.

[0040] In this embodiment: By setting the discharge pipe 7 and the legs 8, when the spiral feeding blade 64 pushes the waste to the discharge port 61, the discharge pipe 7 plays a guiding and constraining role, enabling the waste to be discharged from the processing box 1 centrally and orderly, avoiding the waste from scattering everywhere during the discharge process, ensuring the cleanliness of the working environment, and at the same time facilitating the subsequent centralized collection and treatment of the discharged waste. The legs 8 at the four corners of the bottom of the processing box 1 and the reinforcing plates at their bottoms provide stable support for the processing box 1, ensuring the safe and stable progress of the entire waste recycling and crushing operation.

[0041] Working principle: During the use of the waste recycling and crushing structure for MPP pipe fittings injection molding, first, the MPP pipe waste is put into the processing box 1 through the feeding hopper 2. Then, the operator operates on the controller 3 to start the crushing motor 41. The output end of the crushing motor drives the crushing cylinder 42 to rotate at a high speed, causing the crushing teeth 43 on the outer side of the crushing cylinder 42 to rotate accordingly. At the same time, the controller 3 controls the electric heating tube 45 in the heating cylinder 44 to be energized and generate heat. When the MPP pipe waste enters the processing box 1, it will be preliminarily softened under the influence of the heat emitted by the heating cylinder 44. The softened waste is initially crushed under the impact and tearing action of the high-speed rotating crushing teeth 43. The preliminarily crushed waste falls downward. The operating crushing motor 53 drives the shaft rod 54 to rotate, and the fixed sleeve 55 and the crushing knife 56 on the shaft rod 54 also rotate accordingly to further crush the falling waste. During the crushing process, the screen 52 will screen the waste. The waste that meets the particle size requirements will pass through the screen 52 under the action of gravity and fall to the bottom side inside the processing box 1. The waste that does not meet the requirements remains on the top of the screen 52 and continues to be crushed by the crushing knife 56 until it reaches the appropriate particle size. Moreover, when crushed materials of different particle sizes are required, the operator can simply replace the screen 52 to adjust the screening standard to meet the diverse production needs. When the crushed waste falls to the bottom of the processing box 1, the operating feeding motor 62 drives the connecting shaft 63 to rotate, causing the spiral feeding blade 64 on the outer side of the connecting shaft 63 to rotate, continuously pushing the waste at the bottom of the processing box 1 forward to the discharge port 61. The discharge pipe 7 in the discharge port 61 will guide and restrain the waste, enabling it to be discharged from the processing box 1 centrally and orderly, avoiding the waste from scattering everywhere, ensuring the cleanliness of the working environment and facilitating subsequent centralized collection and treatment. During the whole process, each component works together to make the waste recycling process smoother and more efficient, improving the waste recycling quality and enhancing the adaptability and practicality of the equipment in actual application.

[0042] The above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A waste recycling and crushing structure for injection molding of MPP pipe fittings, comprising a processing box (1), characterized in that: The bottom of the processing box (1) is connected to a feeding hopper (2), a controller (3) is arranged on the front side of the processing box (1), a heating and crushing structure (4) is arranged on the top side of the processing box (1), a crushing mechanism (5) is arranged in the middle of the processing box (1), and a feeding structure (6) is arranged at the bottom of the processing box (1); The pulverizing mechanism (5) comprises a fixed plate (51) fixedly connected to the middle of two sides inside the processing box (1); a screen (52) is slidably connected to the inner side of the fixed plate (51); the front side of the screen (52) passes through the front side of the processing box (1); the front side of the screen (52) is bolted to the front side of the processing box (1); a pulverizing motor (53) is bolted to the rear side of the processing box (1); the output end of the pulverizing motor (53) passes through the rear side of the processing box (1); the output end of the pulverizing motor (53) is fixedly connected to a shaft (54); a fixed sleeve (55) is bolted to the outer side of the shaft (54); a pulverizing knife (56) is fixedly connected to the outer side of the fixed sleeve (55); and the pulverizing knife (56) is located on the top of the screen (52).

2. The waste recycling and crushing structure for injection molding of MPP pipes and fittings according to claim 1 is characterized by: The heating and crushing structure (4) comprises a crushing motor (41) bolted to the top of the rear side of the processing box (1), the crushing motor (41) is electrically connected to the controller (3), and the output end of the crushing motor (41) passes through the rear side of the processing box (1).

3. The waste recycling and crushing structure for injection molding of MPP pipes and fittings according to claim 2 is characterized by: The output end of the crushing motor (41) is fixedly connected to a crushing barrel (42), the crushing barrel (42) is located on both sides of the inside of the processing box (1), and the outer side of the crushing barrel (42) is fixedly connected to crushing teeth (43).

4. The waste recycling and crushing structure for injection molding of MPP pipes and fittings according to claim 3 is characterized by: A heating tube (44) is fixedly connected to both sides of the front side of the processing box (1), the heating tube (44) is located inside the crushing tube (42), an electric heating tube (45) is arranged inside the heating tube (44), and the electric heating tube (45) is electrically connected to the controller (3).

5. The waste recycling and crushing structure for injection molding of MPP pipes and fittings according to claim 1 is characterized by: The material feeding structure (6) comprises a discharge port (61) opened at the bottom of the front side of the processing box (1); a material feeding motor (62) is bolted to the rear side of the processing box (1); the material feeding motor (62) is electrically connected to the controller (3); and the output end of the material feeding motor (62) passes through the rear side of the processing box (1).

6. The waste recycling and crushing structure for injection molding of MPP pipes and fittings according to claim 5 is characterized by: The output end of the feeding motor (62) is fixedly connected to a connecting shaft (63), the outer side of the connecting shaft (63) is fixedly connected to a spiral feeding blade (64), the spiral feeding blade (64) is located at the bottom side of the processing box (1), and the spiral feeding blade (64) is located at the rear side of the discharge port (61).

7. The waste recycling and crushing structure for injection molding of MPP pipes and fittings according to claim 6 is characterized by: A discharge pipe (7) is fixedly connected to the interior of the discharge port (61), and the discharge pipe (7) is located on the front side of the spiral conveying blade (64).

8. The waste recycling and crushing structure for injection molding of MPP pipes and fittings according to claim 1 is characterized by: The four corners of the bottom of the processing box (1) are fixedly connected to supporting legs (8), and the bottoms of the supporting legs (8) are fixedly connected to reinforcing plates.

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