A new type of shredder with noise reduction structure

Abstract

The utility model discloses a novel mill with noise reduction structure relates to injection moulding production auxiliary equipment technical field, aims at solving the technical problem of the excessive noise of existing mill. It includes smashing mechanism, motor, mounting seat, damping mechanism, protective cover and noise reduction subassembly, and damping mechanism installs in the top of mounting seat, and the smashing mechanism is all equipped with on damping mechanism, and protective cover is fixed in the top of damping mechanism, and cover is equipped with motor, smashing mechanism, power wheel and input wheel, and its top through -hole is sealedly connected with smashing mechanism, and both sides air hole and motor position adaptation and install noise reduction subassembly, and damping mechanism contains shock pad and damping shock absorber, and power wheel is coaxial with fan blade. The utility model discloses through shock absorption, closed noise reduction, heat dissipation and silencing integration design, effectively control running noise in standard limit, both protect staff health, reduce environmental noise pollution, and guarantee equipment heat dissipation efficiency and aggregate convenience, be applicable to injection moulding waste recovery and reuse scene.

Description

Technical Field

[0001] This utility model relates to the field of auxiliary equipment technology for injection molding production, and in particular to a novel pulverizer with a noise reduction structure. Background Technology

[0002] In the injection molding process, various types of waste are inevitably generated throughout the entire process from raw material melting and injection molding to finished product output. These include gates from injection molds, scraps remaining in the runners, and injection molded products deemed unqualified due to dimensional deviations, appearance defects, etc. To achieve raw material recycling, reduce production costs, and minimize resource waste, these wastes need to be crushed and processed into granular recycled materials that meet the feeding requirements of injection molding machines, and then mixed back into virgin materials for secondary injection molding. Therefore, crushers are indispensable core equipment for waste recycling in injection molding production, and their operational stability and processing efficiency directly affect the continuity and economy of injection molding production.

[0003] Currently, mainstream injection molding waste shredders on the market mainly consist of a drive motor, a shredding chamber, rotating blades, a fixed blade holder, and a discharge mechanism. Their working principle involves the drive motor driving the rotating blades to rotate at high speed, creating a shearing and impact effect with the fixed blade holder, thus crushing the input waste into fine particles. However, existing shredders generally suffer from excessive noise, for the following reasons: Firstly, the high-speed impact and friction between the rotating blades and the waste, and between the waste and the inner wall of the shredding chamber, during the shredding process generates strong mechanical vibration and aerodynamic noise. Secondly, the vibration from the drive motor is directly transmitted to the outside through the machine structure, and the shredding chambers of existing shredders are mostly open or simply closed structures, lacking targeted noise reduction designs, resulting in various types of noise radiating outwards without obstruction.

[0004] In practical applications, the operating noise of these crushers typically reaches 85-100 dB, far exceeding the noise limit (80 dB) for workshop operations stipulated in the "Industrial Enterprise Noise Hygiene Standard". Prolonged exposure to high noise levels not only severely damages the operator's hearing system but also causes fatigue, lack of concentration, and increases production safety hazards. Simultaneously, high noise levels pollute the surrounding environment, especially in industrial parks or densely populated factory areas with strict noise control requirements. The noise problem of existing crushers has become a key factor limiting their application scenarios. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a new type of pulverizer with a noise reduction structure that can effectively reduce the operating noise of the pulverizer, reduce noise pollution and the impact on the health of workers.

[0006] This utility model discloses a novel pulverizer with a noise reduction structure, comprising a pulverizing mechanism, a motor, and a mounting base. The motor's output end is equipped with a drive wheel, and the pulverizing mechanism's input end is equipped with an input wheel. The drive wheel and input wheel are connected by a belt. The top and bottom of the pulverizing mechanism are respectively equipped with a feed inlet and a discharge outlet. A hinged baffle plate is provided at the feed inlet. The pulverizer also includes:

[0007] A shock-absorbing mechanism is installed on the top of the mounting base, and the crushing mechanism and the motor are both installed on the shock-absorbing mechanism;

[0008] A protective cover is fixedly installed on the top of the shock absorption mechanism. The motor, crushing mechanism, power wheel and input wheel are all located inside the protective cover. The top of the protective cover is provided with a through hole adapted to the crushing mechanism. The through hole is sealed to the protruding side wall of the crushing mechanism.

[0009] Ventilation holes are provided through the side walls on both the left and right sides of the protective cover, and the positions of the two ventilation holes are adapted to the position of the motor.

[0010] Noise reduction components are installed on the outer wall of each of the vents.

[0011] Furthermore, the shock absorption mechanism includes a shock absorption plate, and a plurality of damping shock absorbers are evenly distributed on the bottom edge of the shock absorption plate. The bottom ends of the plurality of damping shock absorbers are evenly distributed and installed on the top of the mounting base. The bottom end of the protective cover is connected to the top edge of the shock absorption plate. The motor and the crushing mechanism are both installed on the top of the shock absorption plate, and a discharge hole is provided through the shock absorption plate. The discharge port of the crushing mechanism is connected to the discharge hole.

[0012] Furthermore, the noise reduction component includes a sound-absorbing thick tube, which is connected to a vent hole, and the outer end of the sound-absorbing thick tube is connected to a venting thin tube. The inner walls of both the sound-absorbing thick tube and the venting thin tube are adhered with sound-absorbing cotton.

[0013] Furthermore, the drive wheel is coaxially mounted with a drive shaft facing the flat side wall of the protective cover. Several fan blades are evenly distributed on the side wall of the drive shaft. After the motor starts, the fan blades will discharge the air inside the protective cover through the ventilation holes.

[0014] Furthermore, the middle part of the protective cover's sheet material is reinforced with a sound-insulating board.

[0015] Furthermore, the discharge port of the crushing mechanism is connected to an extension pipe, which extends to the lower side of the shock absorber plate. The bottom of the extension pipe is detachably and sealed to a collection box via a connecting assembly.

[0016] Furthermore, the connecting component is configured as two slide rails, which are respectively installed on the left and right sides of the bottom end of the extension tube. The front end of the slide rail is provided with a sliding inlet. The top of the left and right side walls of the collection box is provided with a sliding strip. The two sliding strips slide into the two slide rails from the sliding inlet. The top opening side of the collection box slides and seals tightly against the bottom end of the extension tube.

[0017] Furthermore, an auxiliary hole is provided through the protective cover on the side near the fan blades, an auxiliary cooling fan is installed inside the auxiliary hole, and a noise reduction component is installed on the outer wall of the auxiliary hole.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] By absorbing the vibration of the equipment during operation through the vibration damping mechanism, the vibration is reduced from being transmitted to the outside world, the structural vibration noise is reduced, and the noise propagation path is weakened from the source;

[0020] The protective cover encloses the core noise sources such as the motor and crushing mechanism, and together with the sound insulation board made of composite material, it blocks the direct radiation of noise and greatly reduces the intensity of noise diffusion outward.

[0021] The ventilation holes, in conjunction with the noise reduction components, ensure ventilation and heat dissipation inside the protective cover while absorbing noise in the airflow through the sound-absorbing cotton, thus achieving the dual functions of heat dissipation and noise reduction.

[0022] The fan blades and the auxiliary cooling fan form a collaborative cooling system, solving the heat dissipation problem caused by the enclosed structure and preventing the motor and crushing mechanism from being affected by overheating and affecting operational stability.

[0023] The collection bin is detachably and sealed to the extension pipe via a slide rail, which facilitates the collection and cleaning of recycled materials and reduces noise leakage and material spillage during the discharge process.

[0024] The overall design reduces equipment operating noise, protects the hearing health of operators, reduces potential production safety hazards, and expands the application scenarios of the equipment in areas with strict noise control.

[0025] With a reasonable structural layout and all components working in tandem, the equipment achieves integrated optimization of noise reduction, heat dissipation, and material collection while ensuring crushing efficiency, thus enhancing its overall practicality. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the installation structure of the extension tube of this utility model;

[0028] Figure 3 This is a schematic diagram of the motor mounting structure of this utility model;

[0029] Figure 4This is the utility model Figure 3 A magnified schematic diagram of the structure of part A in the diagram;

[0030] The following components are labeled in the attached diagram: 1. Crushing mechanism; 2. Motor; 3. Mounting base; 4. Drive wheel; 5. Input wheel; 6. Baffle plate; 7. Protective cover; 8. Vent hole; 9. Shock absorber plate; 10. Damping shock absorber; 11. Silencing thick pipe; 12. Venting thin pipe; 13. Sound-absorbing cotton; 14. Fan blade; 15. Sound insulation board; 16. Extension pipe; 17. Collection box; 18. Slide rail; 19. Slide bar; 20. Auxiliary cooling fan. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0032] like Figures 1 to 4 As shown, this utility model discloses a novel pulverizer with a noise reduction structure, comprising a pulverizing mechanism 1, a motor 2, and a mounting base 3. The output end of the motor 2 is provided with a power wheel 4, and the input end of the pulverizing mechanism 1 is provided with an input wheel 5. The power wheel 4 and the input wheel 5 are connected by a belt. The top and bottom of the pulverizing mechanism 1 are respectively provided with a feeding port and a discharge port. A hinged baffle plate 6 is provided at the feeding port. The pulverizer also includes:

[0033] A shock-absorbing mechanism is installed on the top of the mounting base 3, and both the crushing mechanism 1 and the motor 2 are installed on the shock-absorbing mechanism;

[0034] The protective cover 7 is fixedly installed on the top of the shock absorption mechanism. The motor 2, crushing mechanism 1, power wheel 4 and input wheel 5 are all located inside the protective cover 7. The top of the protective cover 7 is provided with a through hole adapted to the crushing mechanism 1. The through hole is sealed to the side wall of the protruding crushing mechanism 1.

[0035] Ventilation holes 8 are provided through the side walls on both the left and right sides of the protective cover 7, and the positions of the two ventilation holes 8 are adapted to the position of the motor 2.

[0036] A noise reduction component is installed on the outer wall of each of the vent holes 8;

[0037] In this embodiment,

[0038] Vibration damping mechanism: As the mounting carrier for crushing mechanism 1 and motor 2, it absorbs the vibration generated during the operation of both, reduces the transmission of vibration to mounting base 3 and the outside world, and weakens structural vibration noise;

[0039] Protective cover 7: encloses the core noise sources such as motor 2, crushing mechanism 1, power wheel 4, and input wheel 5, preventing noise from directly radiating outwards; the top through hole allows the feed port of crushing mechanism 1 to extend out, and the sealed connection prevents noise from leaking from the gaps;

[0040] Ventilation hole 8: Provides a ventilation channel for the interior of the protective cover 7, so as to timely dissipate the heat generated by the operation of the motor 2 and the crushing mechanism 1, and avoid overheating caused by the closed structure;

[0041] Noise reduction component: Installed on the outside of the ventilation hole 8, it absorbs and attenuates aerodynamic and mechanical noise in the ventilation airflow, achieving both heat dissipation and noise reduction.

[0042] As a preferred embodiment of the above embodiment, the shock absorption mechanism includes a shock absorption plate 9, a plurality of damping shock absorbers 10 are evenly distributed on the bottom edge of the shock absorption plate 9, the bottom ends of the plurality of damping shock absorbers 10 are evenly distributed and installed on the top of the mounting base 3, the bottom end of the protective cover 7 is connected to the top edge of the shock absorption plate 9, the motor 2 and the crushing mechanism 1 are both installed on the top of the shock absorption plate 9, and a material discharge hole is provided through the shock absorption plate 9, and the discharge port of the crushing mechanism 1 is connected to the material discharge hole;

[0043] In this embodiment,

[0044] Vibration damping plate 9: It bears the weight of crushing mechanism 1, motor 2 and protective cover 7, provides a stable mounting base for each component, and transmits vibration to damping shock absorber 10.

[0045] Damping shock absorber 10: evenly distributed between damping plate 9 and mounting base 3, it absorbs vibration energy through its own damping characteristics, weakens the vibration transmission path, and reduces structural noise;

[0046] Discharge hole: Connects the discharge port of crushing mechanism 1 and extension pipe 16, providing a falling channel for the crushed recycled material and preventing the material from accumulating on the shock-absorbing plate 9.

[0047] As a preferred embodiment of the above, the noise reduction component includes a sound-absorbing thick tube 11, which is connected to the air vent 8, and the outer end of the sound-absorbing thick tube 11 is connected to the air vent thin tube 12. The inner walls of the sound-absorbing thick tube 11 and the air vent thin tube 12 are both covered with sound-absorbing cotton 13.

[0048] In this embodiment,

[0049] Silencing tube 11: Connects to vent 8, expands the airflow channel volume, and initially attenuates noise energy;

[0050] Ventilation tube 12: Connects to the outer end of the silencer tube 11, extending the airflow path and further enhancing the noise attenuation effect;

[0051] Sound-absorbing cotton 13: Adhesive to the inner wall of the sound-absorbing thick pipe 11 and the ventilation thin pipe 12, it absorbs noise in the airflow through its porous structure, improves the sound-absorbing efficiency, and ensures ventilation without increasing noise pollution.

[0052] As a preferred embodiment of the above, the power wheel 4 is coaxially provided with a drive shaft facing the planar side wall of the protective cover 7, and a plurality of fan blades 14 are evenly distributed on the side wall of the drive shaft. After the motor 2 is started, the plurality of fan blades 14 will discharge the air inside the protective cover 7 through the ventilation hole 8 facing it.

[0053] In this embodiment,

[0054] Drive shaft: It is fixed coaxially with the drive wheel 4 and rotates synchronously with the drive wheel 4, providing a mounting carrier and power transmission path for the fan blades 14;

[0055] Fan blade 14: As the drive shaft rotates, it generates airflow, which discharges the heat generated by the operation of the motor 2 and the crushing mechanism 1 inside the protective cover 7 through the corresponding vent 8, thereby improving the heat dissipation efficiency in the enclosed space and preventing the components from overheating. Driven by the motor 2, it achieves a certain energy-saving effect.

[0056] As a preferred embodiment of the above embodiment, the middle part of the plate of the protective cover 7 is all composited with a sound insulation plate 15;

[0057] In this embodiment,

[0058] Sound insulation panel 15: Composite in the middle of the protective cover 7 board, using the acoustic impedance characteristics of the sound insulation material to block the noise inside the protective cover 7 from penetrating the board and radiating outward, enhancing the sealing and noise reduction effect of the protective cover 7, and further reducing radiated noise. The sound insulation panel 15 can be made of glass wool, rock wool or polyester fiber cotton, but is not limited to the above three materials.

[0059] As a preferred embodiment of the above embodiment, the discharge port of the crushing mechanism 1 is connected to an extension pipe 16, which extends to the lower side of the shock-absorbing plate 9, and the bottom of the extension pipe 16 is detachably and sealed to a collection box 17 via a connecting assembly.

[0060] In this embodiment,

[0061] Extension pipe 16: connects the discharge port of crushing mechanism 1 to collection box 17, guides the recycled material to fall accurately into collection box 17, and avoids noise leakage during the material falling process;

[0062] Collection bin 17: Collects crushed recycled materials in a centralized manner, enabling convenient storage for waste recycling and reuse;

[0063] Connection component: Enables a detachable and sealed connection between the extension pipe 16 and the collection box 17, ensuring the sealing performance of the connection, reducing discharge noise and leakage, and facilitating the disassembly and cleaning of the collection box 17.

[0064] As a preferred embodiment of the above, the connecting component is configured as two slide rails 18, which are respectively installed on the left and right sides of the bottom end of the extension tube 16. The front end of the slide rail 18 is provided with a sliding inlet. The top of the left and right side walls of the collection box 17 are provided with slide bars 19. The two slide bars 19 slide into the two slide rails 18 from the sliding inlet respectively. The top opening side of the collection box 17 is slidably sealed and tightly attached to the bottom end of the extension tube 16.

[0065] In this embodiment,

[0066] Slide rail 18: Installed on both sides of the bottom end of extension tube 16, it provides sliding guidance and limit for slide bar 19 of collection box 17, ensuring accurate positioning and installation of collection box 17;

[0067] Sliding bar 19: Located on both sides of the top of the collection box 17, it slides in conjunction with the slide rail 18 to realize the quick installation and disassembly of the collection box 17 and improve the ease of operation;

[0068] Sealed and tightly fitted structure: Ensures a tight fit between the top of the collection box 17 and the bottom of the extension pipe 16, preventing noise leakage and material spillage during discharge, and improving the sealing and noise reduction effect.

[0069] As a preferred embodiment of the above embodiment, an auxiliary hole is provided through the side of the protective cover 7 near the fan blade 14, an auxiliary cooling fan 20 is installed in the auxiliary hole, and a noise reduction component is installed on the outer wall of the auxiliary hole.

[0070] In this embodiment,

[0071] Auxiliary holes: provide mounting channels for auxiliary cooling fans 20, supplement the ventilation path inside the protective cover 7, and enhance airflow circulation;

[0072] Auxiliary cooling fan 20: Installed in the auxiliary hole, it accelerates the airflow inside the protective cover 7 and works with the fan blade 14 to improve the heat dissipation efficiency, preventing the motor 2 and the crushing mechanism 1 from overheating during long-term operation. Moreover, the auxiliary cooling fan 20 does not need to be started when the crusher is started. If the ambient temperature is high or there is a high demand for heat dissipation, the auxiliary cooling fan 20 can be turned on as needed.

[0073] Noise reduction component: Installed on the outside of the auxiliary hole, it reduces the noise generated by the operation of the auxiliary cooling fan 20 and the noise discharged from the protective cover 7, ensuring that the heat dissipation function does not add additional noise pollution.

[0074] The working principle of this utility model is as follows:

[0075] After the motor 2 starts, it drives the input wheel 5 of the crushing mechanism 1 to rotate through the power wheel 4 and belt, causing the internal blades of the crushing mechanism 1 to rotate at high speed. The operator opens the baffle 6 of the feeding port and puts the injection molding waste into the crushing mechanism 1. The waste is crushed into recycled material under the shearing and impact of the blades and the fixed blade holder. During equipment operation, the damping shock absorber 10 of the shock absorption mechanism absorbs the vibration generated by the crushing mechanism 1 and the motor 2, reducing the transmission of vibration to the outside. The protective cover 7 and the internal composite sound insulation board 15 seal the core noise source, blocking direct noise radiation. The power wheel 4 drives the fan blade 14 to rotate. When strong heat dissipation is required, it works with the auxiliary cooling fan 20 to accelerate the air circulation inside the protective cover 7, expelling the heat generated during operation through the vent 8 and auxiliary holes. The exhaust airflow absorbs noise through the sound-absorbing cotton 13 of the noise reduction component and then diffuses outward, achieving synergistic heat dissipation and noise reduction. The crushed recycled material falls into the collection box 17, which is sealed and connected to the extension pipe 16, through the discharge port and extension pipe 16. The collection box 17 can be easily disassembled for recycling through the slide rail 18 and slide bar 19. The whole system, through the integrated design of shock absorption, enclosure, noise reduction, and heat dissipation, effectively reduces the operating noise of the equipment while ensuring crushing efficiency, achieving environmentally friendly, efficient, and convenient recycling of injection molding waste.

[0076] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A novel pulverizer with a noise reduction structure, comprising a pulverizing mechanism (1), a motor (2), and a mounting base (3), wherein the output end of the motor (2) is provided with a power wheel (4), the input end of the pulverizing mechanism (1) is provided with an input wheel (5), the power wheel (4) and the input wheel (5) are connected by a belt, the top and bottom of the pulverizing mechanism (1) are respectively provided with a feeding port and a discharging port, and the feeding port is provided with a hinged baffle plate (6), characterized in that, Also includes: The shock absorption mechanism is installed on the top of the mounting base (3), and the crushing mechanism (1) and the motor (2) are both installed on the shock absorption mechanism; The protective cover (7) is fixedly installed on the top of the shock absorption mechanism. The motor (2), crushing mechanism (1), power wheel (4) and input wheel (5) are all located inside the protective cover (7). The top of the protective cover (7) is provided with a through hole adapted to the crushing mechanism (1). The through hole is sealed to the side wall of the protruding crushing mechanism (1). The protective cover (7) has ventilation holes (8) through its left and right sidewalls, and the positions of the two ventilation holes (8) are adapted to the position of the motor (2). Noise reduction components are installed on the outer wall of each of the vent holes (8).

2. The novel pulverizer with a noise reduction structure as described in claim 1, characterized in that, The damping mechanism includes a damping plate (9), and several damping dampers (10) are evenly distributed on the bottom edge of the damping plate (9). The bottom ends of the several damping dampers (10) are evenly distributed on the top of the mounting base (3). The bottom end of the protective cover (7) is connected to the top edge of the damping plate (9). The motor (2) and the crushing mechanism (1) are both installed on the top of the damping plate (9), and a discharge hole is provided through the damping plate (9). The discharge port of the crushing mechanism (1) is connected to the discharge hole.

3. A novel pulverizer with a noise reduction structure as described in claim 1, characterized in that, The noise reduction component includes a sound-absorbing thick tube (11), which is connected to a vent (8), and the outer end of the sound-absorbing thick tube (11) is connected to a ventilating thin tube (12). The inner walls of the sound-absorbing thick tube (11) and the ventilating thin tube (12) are both covered with sound-absorbing cotton (13).

4. A novel pulverizer with a noise reduction structure as described in claim 1, characterized in that, The drive wheel (4) is coaxially mounted on the flat side wall facing the protective cover (7). Several fan blades (14) are evenly distributed on the side wall of the drive shaft. After the motor (2) is started, the fan blades (14) will discharge the air inside the protective cover (7) through the ventilation holes (8) facing it.

5. A novel pulverizer with a noise reduction structure as described in claim 1, characterized in that, The protective cover (7) has a sound insulation board (15) in the middle of its plate.

6. A novel pulverizer with a noise reduction structure as described in claim 1, characterized in that, The discharge port of the crushing mechanism (1) is connected to an extension pipe (16), which extends to the lower side of the damping plate (9). The bottom of the extension pipe (16) is detachably and sealed to a collection box (17) via a connecting assembly.

7. A novel pulverizer with a noise reduction structure as described in claim 6, characterized in that, The connecting component is configured as two slide rails (18), which are respectively installed on the left and right sides of the bottom end of the extension tube (16). The front end of the slide rail (18) is provided with a sliding inlet. The top of the left and right side walls of the collection box (17) are provided with slide bars (19). The two slide bars (19) slide into the two slide rails (18) from the sliding inlet respectively. The top opening side of the collection box (17) is slidably sealed and tightly attached to the bottom end of the extension tube (16).

8. A novel pulverizer with a noise reduction structure as described in claim 3, characterized in that, An auxiliary hole is provided through the side of the protective cover (7) near the fan blade (14), an auxiliary cooling fan (20) is installed in the auxiliary hole, and a noise reduction component is installed on the outer wall of the auxiliary hole.

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