Polyurethane particle crushing device

Abstract

The utility model belongs to the field of crushing devices, in particular relates to a polyurethane particle crushing device, and aims to solve the problems that the crushing efficiency is low, the crushing is not thorough, and large polyurethane particles cannot be crushed after being screened out in the prior art when the polyurethane is crushed through one-time crushing. In order to solve the problems that in the prior art, large polyurethane particles need to be manually put into a crushing device again, operation is tedious, and efficiency is relatively low, according to the scheme, the device comprises a crushing bin, two first crushing rollers are rotationally connected into the crushing bin, and the two first crushing rollers are matched with each other to crush polyurethane; the polyurethane particle crushing and screening device has the advantages of being efficient in crushing and screening, high in automation degree, good in screening effect, compact in structure, easy to maintain, wide in application range and the like, and an efficient and reliable solution is provided for treatment of polyurethane particles.

Description

Technical Field

[0001] This utility model relates to the field of crushing device technology, and in particular to a polyurethane particle crushing device. Background Technology

[0002] Polyurethane particle crushing equipment is a device specifically designed for crushing polyurethane particles. Polyurethane is a polymer material with excellent physical and chemical properties and is widely used in various fields. During the production process, polyurethane particles often need to be crushed to meet specific process requirements.

[0003] Existing polyurethane particle crushing devices still have some shortcomings in practical use:

[0004] 1. Existing polyurethane particle crushing devices mainly crush polyurethane through a single crushing process, which not only has low crushing efficiency but also results in incomplete crushing.

[0005] 2. Existing polyurethane particle crushing devices, although capable of screening larger polyurethane particles after crushing, require manual re-feeding of these larger particles into the crushing device after screening. This is not only cumbersome to operate but also relatively inefficient. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies that involve pulverizing polyurethane in a single process, which not only results in low pulverization efficiency but also incomplete pulverization. Larger polyurethane particles, after being screened out, need to be manually added back into the pulverizing device, which is not only cumbersome but also relatively inefficient. Therefore, this invention proposes a polyurethane particle pulverizing device.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A polyurethane particle crushing device includes a crushing chamber with two first crushing rollers rotatably connected inside. The two first crushing rollers cooperate to crush polyurethane. One end of the rotating shaft of each of the two first crushing rollers extends rotatably to the outside of the crushing chamber. A screen frame is provided inside the crushing chamber and is placed at an angle. Two second crushing rollers are rotatably connected inside the crushing chamber and cooperate to crush polyurethane again. The second crushing rollers are located below the screen frame, and one end of the rotating shaft of each of the two second crushing rollers extends rotatably to the outside of the crushing chamber. The screen frame is located between the two first crushing rollers and the two second crushing rollers.

[0009] In one possible design, rotating shafts are fixedly connected to both sides of the screening frame, and the two rotating shafts are rotatably connected to the crushing chamber. Two base blocks are fixedly installed inside the crushing chamber. Springs are fixedly connected to the top of each base block. Connecting discs are fixedly connected to the top of each of the two springs. The tops of the two connecting discs are fixedly connected to the bottom sides of the screening frame. The same connecting shaft rotatably passes through the two base blocks, and one end of the connecting shaft rotatably extends to the outside of the crushing chamber. A shaped wheel is fixedly fitted on the outer wall of the connecting shaft. A third drive motor is fixedly installed on one side of the crushing chamber via a mounting plate, and one end of the output shaft of the third drive motor is fixedly connected to one end of the connecting shaft.

[0010] In one possible design, a first gear is fixedly fitted at one end of each of the two first crushing roller rotating shafts, and the two first gears mesh with each other. A first drive motor is fixedly installed on one side of the crushing chamber via a mounting plate, and one end of the output shaft of the first drive motor is fixedly connected to one end of one of the first crushing rollers.

[0011] In one possible design, a second gear is fixedly fitted at one end of each of the two second crushing roller rotating shafts, and the two second gears mesh with each other. A second drive motor is fixedly installed on one side of the crushing chamber via a mounting plate, and one end of the output shaft of the second drive motor is fixedly connected to one end of one of the second crushing rollers.

[0012] In one possible design, a screen is fixedly connected inside the screening frame, and the shaped wheel contacts the screening frame.

[0013] In one possible design, a feed bin is fixedly installed on the top of the crushing bin, a discharge bin is fixedly installed on the bottom of the crushing bin, and four support legs are fixedly installed on the bottom of the discharge bin.

[0014] In this application, the first drive motor is started, and the output shaft of the first drive motor drives two first crushing rollers that are meshed by two first gears to rotate. Polyurethane is put into the feed bin and falls onto the two first crushing rollers for crushing. The crushed polyurethane particles fall onto the screen frame. At the same time, the third drive motor is started, and the output shaft of the third drive motor drives the connecting shaft to rotate. The connecting shaft drives the special wheel to rotate. The rotation of the special wheel indirectly pushes the screen frame. When the screen frame is pushed, the screen frame rotates in the crushing bin through two rotating shafts. At the same time, the two connecting discs at the bottom of the screen frame pull the springs. When the special wheel disengages from the bottom of the screen frame, the springs reset and pull the connecting discs downward. At the same time, one end of the screen frame rotates downward through the rotating shaft, thereby achieving the effect of vibrating the screen. Smaller polyurethane particles pass through the screen frame and fall directly into the discharge bin. Larger particles fall between the two second crushing rollers along the screen. The second drive motor is started, and the output shaft of the second drive motor drives the two second crushing rollers that are meshed by two second gears to rotate, further crushing them. After crushing, they fall into the discharge bin.

[0015] Beneficial effects: In this utility model, the polyurethane particle crushing device consists of two meshing first crushing rollers and two meshing second crushing rollers, which realizes efficient crushing of polyurethane particles. The first-stage crushing mechanism initially breaks the polyurethane particles, while the second-stage crushing mechanism further refines the particles to ensure that the crushing effect meets the requirements.

[0016] In this invention, the inclined screen plate and screen frame, along with related components, work together to achieve the effect of vibrating screen, effectively distinguishing between smaller and larger polyurethane particles. This allows smaller particles to fall directly into the discharge bin of the collection device, while larger particles continue to enter the second-stage crushing mechanism for further processing.

[0017] This invention offers several advantages, including high-efficiency crushing and screening, high degree of automation, good screening effect, compact structure, easy maintenance, and wide applicability, providing an efficient and reliable solution for the treatment of polyurethane particles. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural schematic diagram of a polyurethane particle pulverizing device proposed in this utility model;

[0019] Figure 2 This is a cross-sectional structural schematic diagram of a polyurethane particle crushing device proposed in this utility model.

[0020] Figure 3 This is a cross-sectional view of the screen frame of a polyurethane particle crushing device proposed in this utility model.

[0021] In the diagram: 1. Crushing chamber; 2. Feeding chamber; 3. Discharging chamber; 4. First drive motor; 5. First gear; 6. Second drive motor; 7. Second gear; 8. First crushing roller; 9. Screen frame; 10. Second crushing roller; 11. Third drive motor; 12. Connecting disc; 13. Connecting shaft; 14. Irregular wheel; 15. Base block; 16. Screen; 17. Spring; 18. Rotating shaft. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Example 1: Refer to Figures 1 to 2 A pulverizing device includes a pulverizing chamber 1, with two first pulverizing rollers 8 rotatably connected inside the pulverizing chamber 1. The two first pulverizing rollers 8 cooperate to pulverize polyurethane. One end of the rotating shaft of each of the two first pulverizing rollers 8 extends rotatably to the outside of the pulverizing chamber 1. A screen frame 9 is provided inside the pulverizing chamber 1 and is placed at an angle. Two second pulverizing rollers 10 are rotatably connected inside the pulverizing chamber 1 and cooperate to pulverize polyurethane again. The second pulverizing rollers 10 are located below the screen frame 9. One end of the rotating shaft of each of the two second pulverizing rollers 10 extends rotatably to the outside of the pulverizing chamber 1. The screen frame 9 is located between the two first pulverizing rollers 8 and the two second pulverizing rollers 10. Inside the crushing chamber 1, there are two first crushing rollers 8 and two second crushing rollers 10 respectively. Between the two first crushing rollers 8 and the two second crushing rollers 10, there is also an inclined screen frame 9. The two first crushing rollers 8 cooperate with each other to perform preliminary crushing of polyurethane. The two second crushing rollers 10 are located below the screen frame 9 and are used to further crush the polyurethane particles after they have been screened by the screen frame 9.

[0024] Reference Figure 3The screen frame 9 has two rotating shafts 18 fixedly connected to both sides, and the two rotating shafts 18 are rotatably connected to the crushing chamber 1. Two base blocks 15 are fixedly installed inside the crushing chamber 1. A spring 17 is fixedly connected to the top of each base block 15, and a connecting plate 12 is fixedly connected to the top of each spring 17. The tops of the two connecting plates 12 are fixedly connected to the bottom sides of the screen frame 9. A common connecting shaft 13 rotatably passes through the two base blocks 15, and one end of the connecting shaft 13 rotatably extends to the outside of the crushing chamber 1. A shaped wheel 14 is fixedly fitted onto the outer wall of the connecting shaft 13. A third drive motor 11 is fixedly installed on one side of the crushing chamber 1 via a mounting plate, and one end of the output shaft of the third drive motor 11 is fixedly connected to one end of the connecting shaft 13. When the third drive motor 11 starts, it drives the connecting shaft 13 and the shaped wheel 14 to rotate, which in turn causes the screen frame 9 to vibrate through the transmission of the springs 17 and the connecting plates 12, thus improving the screening efficiency.

[0025] Reference Figure 2 Each of the two first crushing rollers 8 has a first gear 5 fixedly fitted at one end of its rotating shaft, and the two first gears 5 mesh with each other. A first drive motor 4 is fixedly installed on one side of the crushing chamber 1 via a mounting plate, and one end of the output shaft of the first drive motor 4 is fixedly connected to one end of one of the first crushing rollers 8. When the first drive motor 4 starts, it drives the first crushing roller 8 connected to it to rotate, and then through the meshing transmission of the first gear 5, it causes the other first crushing roller 8 to rotate synchronously, thereby achieving the initial crushing of polyurethane.

[0026] Reference Figure 1 and Figure 2 Each of the two second crushing rollers 10 has a second gear 7 fixedly fitted at one end of its rotating shaft, and the two second gears 7 mesh with each other. A second drive motor 6 is fixedly mounted on one side of the crushing chamber 1 via a mounting plate, and one end of the output shaft of the second drive motor 6 is fixedly connected to one end of one of the second crushing rollers 10. When the second drive motor 6 starts, it drives the second crushing roller 10 connected to it to rotate, and then through the meshing transmission of the second gear 7, it causes the other second crushing roller 10 to rotate synchronously, thereby realizing the further crushing of polyurethane.

[0027] Reference Figure 3 A screen 16 is fixedly connected inside the screening frame 9, and the irregularly shaped wheel 14 contacts the screening frame 9. During rotation, the irregularly shaped wheel 14 will contact the screening frame 9, further promoting the vibration of the screening frame 9 and improving the screening effect.

[0028] This application can be used in the field of polyurethane particles, or in other fields applicable to this application.

[0029] Example 2: Reference Figure 1An improvement upon Embodiment 1: A polyurethane particle crushing device, applied to the field of polyurethane particles, wherein a feeding chamber 2 is fixedly installed on the top of the crushing chamber 1, and a discharging chamber 3 is fixedly installed on the bottom of the crushing chamber 1, with four support legs fixedly installed on the bottom of the discharging chamber 3. Polyurethane particles enter the crushing chamber 1 through the feeding chamber 2 for crushing, and after crushing, the crushed polyurethane particles are discharged through the discharging chamber 3. Simultaneously, four support legs are fixedly installed on the bottom of the discharging chamber 3 to support the entire device and maintain its stability.

[0030] However, as is well known to those skilled in the art, the working principles and wiring methods of the first drive motor 4, the second drive motor 6, and the third drive motor 11 are commonplace and are all conventional methods or common knowledge. They will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A polyurethane granule pulverizing device characterized by comprising: include: The crushing chamber (1) contains two first crushing rollers (8) rotatably connected to each other, and the two first crushing rollers (8) cooperate to crush polyurethane. One end of the rotating shaft of each of the two first crushing rollers (8) extends to the outside of the crushing chamber (1). The crushing chamber (1) is provided with a screen frame (9), and the screen frame (9) is placed at an angle. The crushing chamber (1) contains two second crushing rollers (10) rotatably connected to each other, and the two second crushing rollers (10) cooperate to crush polyurethane again. The second crushing rollers (10) are located below the screen frame (9). One end of the rotating shaft of each of the two second crushing rollers (10) extends to the outside of the crushing chamber (1). The screen frame (9) is located between the two first crushing rollers (8) and the two second crushing rollers (10).

2. A polyurethane granule pulverizing device according to claim 1, characterized in that, The two sides of the screen frame (9) are fixedly connected to rotating shafts (18), and the two rotating shafts (18) are respectively rotatably connected in the crushing chamber (1). Two base blocks (15) are fixedly installed in the crushing chamber (1). A spring (17) is fixedly connected to the top of the base block (15). A connecting plate (12) is fixedly connected to the top of the two springs (17). The tops of the two connecting plates (12) are fixedly connected to the bottom sides of the screen frame (9). The same connecting shaft (13) rotatably passes through the two base blocks (15). One end of the connecting shaft (13) rotatably passes through the outside of the crushing chamber (1). A special-shaped wheel (14) is fixedly sleeved on the outer wall of the connecting shaft (13). A third drive motor (11) is fixedly installed on one side of the crushing chamber (1) through a mounting plate. One end of the output shaft of the third drive motor (11) is fixedly connected to one end of the connecting shaft (13).

3. The polyurethane granule pulverizing device according to claim 1, wherein One end of the rotating shaft of each of the two first crushing rollers (8) is fixedly fitted with a first gear (5), and the two first gears (5) mesh with each other. One side of the crushing chamber (1) is fixedly installed with a first drive motor (4) through a mounting plate, and one end of the output shaft of the first drive motor (4) is fixedly connected to one end of one of the first crushing rollers (8).

4. The polyurethane pellet pulverizing device according to claim 1, wherein A second gear (7) is fixedly sleeved on one end of the rotating shaft of each of the two second crushing rollers (10), and the two second gears (7) mesh with each other. A second drive motor (6) is fixedly installed on one side of the crushing chamber (1) through a mounting plate, and one end of the output shaft of the second drive motor (6) is fixedly connected to one end of one of the second crushing rollers (10).

5. The polyurethane pellet pulverizing device according to claim 1, wherein A screen (16) is fixedly connected inside the screen frame (9), and the shaped wheel (14) and the screen frame (9) are in contact.

6. The polyurethane pellet pulverizing device according to claim 1, wherein The top of the crushing chamber (1) is fixedly equipped with a feeding chamber (2), the bottom of the crushing chamber (1) is fixedly equipped with a discharging chamber (3), and the bottom of the discharging chamber (3) is fixedly equipped with four support legs.

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