Adjustable synthetic resin pulverizing apparatus

Abstract

The utility model discloses an adjustable synthetic resin smashing equipment belongs to synthetic resin production equipment technical field, including primary support platform and install on its hammer crusher, secondary support platform is located primary support platform side portion, and its top is equipped with blanking funnel, the reduction motor is installed on secondary support platform, is located blanking funnel side, the depolymerization subassembly is connected reduction motor and is suspended in blanking funnel top, including with the depolymerization casing of reduction motor casing fixed, the depolymerization blade subassembly of detachable installation in depolymerization casing, the depolymerization subassembly realizes quick dismounting through the matching of the limiting lug of connecting sleeve and motor output shaft limiting groove, and the angle and the number of multistage depolymerization blade of its spiral arrangement are adjustable (initial angle 20 DEG / 40 DEG, incremental 5 DEG / 8 DEG), can adapt to different resin characteristics, solves the powder agglomeration problem.

Description

Technical Field

[0001] This utility model relates to the technical field of synthetic resin production equipment, specifically an adjustable synthetic resin pulverizing device used to solve the technical problem of powder agglomeration during the pulverizing process. Background Technology

[0002] Synthetic resins are prone to physical agglomeration when pulverized into fine powder, severely affecting product quality. It is well-known in the industry that after initial pulverization by a hammer crusher, blocky resin particles form agglomerates due to the following reasons: 1. Electrostatic adsorption: The fresh surfaces generated during the crushing process carry static charges, causing particles to adhere to each other; 2. Surface energy effect: Fine powders have a large specific surface area and high surface energy, which drives the spontaneous aggregation of particles to reduce energy. 3. Effect of trace moisture: Some resin absorbs moisture and forms liquid bridges, which enhances the adhesion between particles; 4. Thermal softening effect: The conversion of mechanical energy into heat energy may cause the resin surface to melt slightly, forming hard agglomerates after cooling.

[0003] Existing crushing equipment typically uses a fixed deagglomeration blade structure, which has significant drawbacks: Poor adaptability: It cannot adjust the depolymerization intensity according to different resin properties (such as hardness and hygroscopicity); Maintenance difficulties: The depolymerization components need to be replaced entirely after wear, which is costly; Insufficient deagglomeration: Fixed-angle blades are unable to handle agglomerated particles of different sizes, resulting in decreased powder flowability and uneven particle size distribution, which affects subsequent processing (such as injection molding or coating).

[0004] Therefore, there is an urgent need for a pulverizing device with adjustable depolymerization parameters. Utility Model Content

[0005] 1. Technical problem to be solved: To address the problems existing in the prior art, the purpose of this utility model is to provide a crushing device with a quick-change depolymerization blade assembly, thereby solving the problems of poor adaptability and high maintenance costs in the prior art.

[0006] 2. Technical Solution: To solve the above problems, the present invention adopts the following technical solution.

[0007] An adjustable synthetic resin crushing device includes: a primary support platform and a hammer crusher mounted thereon; a secondary support platform located on the side of the primary support platform, with a discharge hopper on its top; a geared motor mounted on the secondary support platform, located on the side of the discharge hopper; and a depolymerization assembly connected to the geared motor and suspended above the discharge hopper, comprising: a depolymerization shell fixed to the geared motor housing; a depolymerization blade assembly detachably installed within the depolymerization shell; a threaded end cap located on the left side of the depolymerization shell, and a rotating handle rotatably connected thereto, the rotating handle being fixedly connected to the depolymerization blade assembly; an upper connecting pipe at the top of the depolymerization shell communicating with the discharge port of the hammer crusher, and a lower connecting pipe at the bottom aligned with the discharge hopper; the output shaft of the geared motor horizontally penetrating the right side wall of the depolymerization shell; the depolymerization blade assembly including a drive shaft, multi-stage depolymerization blades fixed on the drive shaft, and a connecting sleeve at the end of the drive shaft; and two symmetrical limiting protrusions on the inner wall of the connecting sleeve matching the limiting grooves on the output shaft of the geared motor.

[0008] A further improvement is that the depolymerization blade assembly is a modular and replaceable structure, and the increment angle and number of its depolymerization blades are adjustable.

[0009] A further improvement is that the increasing angle of the depolymerization blades is 5° or 8°, and the number of blades is 6 or 9.

[0010] A further improvement is that the initial angle of the depolymerization blades is 20° or 40°, and all blades are equidistantly distributed along the drive shaft axis.

[0011] A further improvement is that the multi-stage depolymerization blades are arranged in a spiral shape on the drive shaft, with a fixed angle difference between adjacent blades.

[0012] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this utility model has the following advantages: (1) Modular adjustable design: The depolymerization blade assembly can be replaced as a whole to adapt to different resin properties (such as PVC requiring an initial angle of 20° + 5° increments, and PET requiring 40° + 8° increments), greatly shortening the replacement time and significantly improving maintenance efficiency.

[0013] (2) Stepped deagglomeration efficiency enhancement: The spirally arranged deagglomeration blades form a progressively stronger impact zone with a fixed angle difference (5° or 8°), which greatly improves the deagglomeration rate of agglomerated particles.

[0014] (3) Precise transmission with limit: The limit protrusion of the connecting sleeve is forced to cooperate with the motor output shaft groove to eliminate transmission backlash.

[0015] It should be noted that the structures not described in this utility model are the same as or can be implemented using existing technology, and will not be elaborated here, as they do not involve the design points and improvement directions of this utility model. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the depolymerization component of this utility model; Figure 3 This is a schematic diagram of the depolymerization blade assembly of the present invention, which has an increasing angle of 8° and six blades. Figure 4 This is a schematic diagram of the hammer crusher of this utility model; Figure 5 This is a schematic diagram of the depolymerization blade assembly of the present invention, which has an increasing angle of 5° and nine blades.

[0017] Explanation of the labels in the diagram: 1. Primary support platform; 2. Hammer crusher; 3. Secondary support platform; 4. Discharge hopper; 5. Gear motor; 6. Depolymerization assembly; 61. Depolymerization housing; 62. Upper connecting pipe; 63. Lower connecting pipe; 64. Threaded end cap; 65. Rotary handle; 66. Depolymerization blade assembly; 661. Drive shaft; 662. Depolymerization blade; 663. Connecting sleeve; 664. Limiting protrusion. Detailed Implementation

[0018] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the utility model will be more thorough and complete.

[0019] An adjustable synthetic resin pulverizing device, please refer to [link / reference]. Figures 1-5 The equipment installation and operation process includes the following: Step 1: Equipment Assembly 1. Support platform positioning: Fix the primary support platform 1 to the ground and install the hammer crusher 2 on it; A secondary support platform 3 is installed on the side of the hammer crusher 2, ensuring that the height of the secondary support platform 3 is higher than that of the primary support platform 1, and a material discharge hopper 4 is embedded on its top.

[0020] 2. Assembly of motor and depolymerization components: Install a geared motor 5 on the secondary support platform 3, positioning it to the side of the discharge hopper 4; The depolymerization shell 61 is horizontally fixed to the side of the geared motor 5 housing, so that the depolymerization shell 61 is suspended directly above the discharge funnel 4; The top of the depolymerization shell 61 is connected to the upper connecting pipe 62, which connects to the discharge port of the hammer crusher 2; the bottom is connected to the lower connecting pipe 63, which is aligned with the inlet of the discharge hopper 4.

[0021] 3. Installation of depolymerization blade assembly: Insert the drive shaft 661 of the depolymerization blade assembly 66 into the left opening of the depolymerization housing 61; Push the rotating handle 65 to make the connecting sleeve 663 fit into the output shaft of the geared motor 5 until the limiting protrusion 664 is engaged in the limiting groove of the output shaft; Tighten the threaded end cap 64, which locks into the groove of the depolymerization housing 61, pressing the depolymerization blade assembly 66.

[0022] Step 2: Equipment Operation 1. Crushing stage: Blocky synthetic resin is fed into hammer crusher 2, and the crushed powder enters depolymerization shell 61 through upper connecting pipe 62.

[0023] 2. Depolymerization stage: The geared motor 5 drives the output shaft to rotate, which in turn drives the deagglomeration blade assembly 66 to rotate at high speed. As the powder falls within the depolymerization shell 61, it is sequentially struck by the spirally arranged multi-stage depolymerization blades 662: The lower blades initially break up large agglomerates at a smaller angle (e.g., 20°); The high-positioned blades enhance the impact force with increasing angles (such as 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°), crushing tiny agglomerates.

[0024] 3. Material collection: After deagglomeration, the powder falls into the discharge funnel 4 through the lower connecting pipe 63, completing the discharge process.

[0025] Step 3: Replace the depolymerization blades 1. Disassembly: Loosen the threaded end cap 64 and pull out the depolymerization blade assembly 66 to disengage the limiting protrusion 664 from the motor output shaft limiting groove.

[0026] 2. Replacement: Select a new depolymerization blade assembly adapted to the resin properties (e.g., 6 blades with an initial angle of 40° + 8° increments for rigid resin). Align the connecting sleeve 663 of the new component with the motor output shaft and insert it. Rotate the handle 65 to adjust the angle until the limiting protrusion 664 is engaged in the limiting groove. Re-tighten the threaded end cap 64.

[0027] The main implementation mechanisms in the solution are as follows: 1. Achieving the effect of progressively impacting powder The depolymerization blades 662 are arranged in a spiral along the drive shaft 661, and the adjacent blades maintain a fixed angle difference (such as 5° or 8°).

[0028] The falling powder first contacts the lower blades (small angle), and is initially dispersed by a relatively low impact force; Subsequently, the higher-positioned blades apply stronger mechanical shearing force with increasing tilt angles to completely crush the micro-agglomerates.

[0029] In use, this solution can form a stepped-enhanced impact force field, achieving efficient deagglomeration of agglomerated particles of different sizes.

[0030] 2. Achieving the effect of quick blade replacement The depolymerization blade assembly 66 adopts a modular design, and its connecting sleeve 663 is equipped with a limiting protrusion 664, which matches the limiting groove of the motor output shaft.

[0031] During disassembly, the component can be pulled out directly, causing the limiting protrusion 664 to disengage from the limiting groove; When replacing a new component, rotate the handle 65 to adjust the angle, and the limiting protrusion 664 will engage with the limiting groove to complete the positioning.

[0032] This solution can be quickly adapted to different resin properties (such as hardness and hygroscopicity) during use, greatly improving the versatility of the equipment.

[0033] Example 1: Treatment of highly hygroscopic resins (such as PA66) 1. Component selection: A 9-blade depolymerization assembly 66 with an initial angle of 20° and an angle difference of 5° between adjacent blades is adopted; 2. Operation process: After being crushed by hammer crusher 2, the resin enters the depolymerization shell 61; The depolymerization blade 662 rotates at a low speed (1500 rpm) to gradually break up the hygroscopic liquid bridge agglomerates. 3. The effect is that the powder does not clump and its flowability meets the requirements of precision injection molding.

[0034] Example 2: Treatment of heat-sensitive resins (such as PVC) 1. Component selection: Replace with a 6-blade depolymerization blade assembly 66 with an initial angle of 40° and an angle difference of 8° between adjacent blades; 2. Operational adjustments: Increase the motor speed to 2800 rpm to quickly pass through the depolymerization zone; Increasing impact force reduces the residence time of powder in the high-temperature zone; 3. The effect is to avoid surface melting and adhesion, producing loose powder.

[0035] The above-described embodiments are merely illustrative of certain implementations of this utility model, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An adjustable synthetic resin pulverizing device, characterized in that: include: A primary support platform (1) and a hammer crusher (2) installed on it; The secondary support platform (3) is located on the side of the primary support platform (1), and a material discharge hopper (4) is provided on its top. The geared motor (5) is installed on the secondary support platform (3) and located on the side of the discharge hopper (4); The deagglomeration component (6) is connected to the geared motor (5) and suspended above the discharge funnel (4), and includes: Depolymerized housing (61) fixed to the housing of the geared motor (5); Depolymerization blade assembly (66) is detachably installed inside the depolymerization housing (61). A threaded end cap (64) is provided on the left side of the depolymerization housing (61), and a rotating handle (65) is rotatably connected thereto. The rotating handle (65) is fixedly connected to the depolymerization blade assembly (66). The top of the depolymerization shell (61) is provided with an upper connecting pipe (62) that connects to the discharge port of the hammer crusher (2), and the bottom is provided with a lower connecting pipe (63) that aligns with the discharge hopper (4). The output shaft of the geared motor (5) passes horizontally through the right side wall of the depolymerization shell (61); The depolymerization blade assembly (66) includes a drive shaft (661), multi-stage depolymerization blades (662) fixed on the drive shaft (661), and a connecting sleeve (663) provided at the end of the drive shaft (661). The drive shaft (661) is fixedly connected to the rotating handle (65). The inner wall of the connecting sleeve (663) is provided with two symmetrical limiting protrusions (664), which match the limiting groove on the output shaft of the geared motor (5).

2. The adjustable synthetic resin pulverizing equipment according to claim 1, characterized in that: The depolymerization blade assembly (66) is a modular and replaceable structure, and the increment angle and number of its depolymerization blades (662) are adjustable.

3. The adjustable synthetic resin pulverizing equipment according to claim 2, characterized in that: The depolymerization blades (662) have an increasing angle of 5° or 8°, and the number of blades is 6 or 9.

4. The adjustable synthetic resin pulverizing equipment according to claim 3, characterized in that: The initial angle of the depolymerization blade (662) is 20° or 40°, and all blades are equidistantly distributed along the axial direction of the drive shaft (661).

5. The adjustable synthetic resin pulverizing equipment according to claim 1, characterized in that: The multi-stage depolymerization blades (662) are arranged in a spiral shape on the drive shaft (661), with a fixed angle difference between adjacent blades.

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