Plastic underwater pelletizer

Abstract

The utility model relates to the technical field of plastics processing discloses a kind of underwater plastic cutting machines, comprising: rotating box, rotating box is hollow cylinder in cavity, the front wall of rotating box is in open state, and the wall of rotating box is equipped with four blades, and blade is rectangular cutter;Control structure is arranged on the wall of rotating box for controlling the length of each blade, and control structure includes: adjusting column, rotating tooth, limit slot, sliding plate and gnaw tooth, adjusting column is rotatably connected in the cavity center of rotating box, rotating tooth is fixedly connected on the outer wall of adjusting column, limit slot is opened in the cavity wall of rotating box, sliding plate is slidably connected in limit slot, gnaw tooth is opened in the wall of sliding plate, rotating tooth can be engaged in gnaw tooth, and blade is bolted on the wall of sliding plate, control structure can control four blades to displace by rotating adjusting column, to adapt to the die hole position of different extruders, the scheme can be adjusted blade position to make the scheme have wider application range.

Description

Technical Field

[0001] This utility model belongs to the field of plastic processing, specifically, it relates to an underwater plastic pelletizer. Background Technology

[0002] The underwater plastic pelletizer is a high-efficiency pelletizing equipment used in the plastics processing industry. Its working principle is that the material melts and enters the die head channel from the end of the extruder. As soon as the material leaves the die hole, it is cut into droplets by the high-speed rotating pelletizer blades and enters the processing water. Due to the physical property of maximizing the specific surface area of ​​the particles and the temperature difference between the molten droplet polymer and the processing water, the droplets solidify and form near-spherical particles.

[0003] Traditional underwater pelletizers have fixed blade positions and cannot adapt to the die hole position. This means that each pelletizer needs to be matched with the die hole of the discharge machine within the blade's coverage area for pelletizing, resulting in a limited range of applicability for each pelletizer.

[0004] In view of this, this utility model is proposed. Utility Model Content

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0006] An underwater plastic pelletizer includes:

[0007] The rotating box is a hollow cylinder with an open front wall. Four rectangular blades are installed on the wall of the rotating box.

[0008] The control structure is located on the wall of the rotating box to control the length of each blade. The control structure includes: an adjusting column, a rotating tooth, a limiting groove, a sliding plate, and a meshing tooth. The adjusting column is rotatably connected to the center of the cavity of the rotating box. The rotating tooth is fixedly connected to the outer wall of the adjusting column. The limiting groove is opened on the inner wall of the cavity of the rotating box. The sliding plate is slidably connected in the limiting groove. The meshing tooth is opened on the wall of the sliding plate. The rotating tooth can mesh with the meshing tooth. The blade is installed on the wall of the sliding plate by bolts.

[0009] In a preferred embodiment of this utility model, the adjusting column is cylindrical, the rotating teeth are opened on the arc surface of the adjusting column, and four identical limiting grooves are evenly opened in the cavity of the rotating box, with the same sliding plate set in each limiting groove.

[0010] In a preferred embodiment of this utility model, the plane of each limiting groove is tangent to the quadrant point of the adjusting column, the slide plate and the blade can extend out from the limiting groove, and the rotating teeth can simultaneously engage with the teeth on all the slide plate walls.

[0011] In a preferred embodiment of the present invention, the control structure further includes a limiting block and a front plate. The limiting block is fixedly connected to the side wall of each slide, and the front plate is detachably connected to the front wall of the rotating box. The front plate can block the opening on the front wall of the rotating box.

[0012] In a preferred embodiment of this utility model, the limiting block is an arc-shaped block, and the arc surface of the limiting block can contact the inner wall of the rotating box cavity as the slide plate slides. The front plate is disc-shaped, and the wall of the front plate is obliquely opened at the position of each limiting groove to accommodate the blade passing through.

[0013] In a preferred embodiment of this utility model, the wall surface of the front plate is provided with a locking structure, which includes a locking post, a screw, and a locking groove. The locking post is fixedly connected to the rear wall surface of the front plate, the screw is threadedly connected to the front wall surface of the front plate, and the locking groove is opened on the front wall surface of the adjusting post. A threaded groove adapted to the screw is opened in the locking groove.

[0014] In a preferred embodiment of this utility model, the locking pin is cylindrical, and multiple identical semi-circular cross-section rods are fixedly connected to the arc-shaped annular array of the locking pin. The locking groove can adapt to the outer wall size of the locking pin, and the screw can pass through the locking pin and enter the threaded groove in the locking groove.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] 1. By setting up a control structure, the displacement of the four blades can be controlled by rotating the adjusting column, thereby adapting to the die position of different extruders without having to specifically select a pelletizer with the corresponding position. Therefore, this solution has a wide range of applications due to the adjustable blade position.

[0017] 2. By setting a locking structure, the locking pin is fixed in position by the detachable front plate, thereby effectively preventing the adjusting pin from rotating on its own and improving the practicality of this solution.

[0018] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0019] In the attached diagram:

[0020] Figure 1 This is a perspective view of the present utility model;

[0021] Figure 2 This is a disassembly diagram of the front panel and rotating box of this utility model;

[0022] Figure 3 This is a disassembly diagram of the internal structure of the rotating box cavity of this utility model;

[0023] Figure 4 This is a front view of the rotating box of this utility model;

[0024] Figure 5 This is a disassembly diagram of the screw and front plate of this utility model.

[0025] In the diagram: 20, rotating box; 21, blade; 30, adjusting post; 31, rotating tooth; 32, limiting groove; 33, sliding plate; 34, limiting block; 35, meshing tooth; 40, locking groove; 41, front plate; 42, locking post; 43, screw. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an underwater plastic pelletizer includes: a rotating box 20, which is a hollow cylinder with an open front wall. Four blades 21 are mounted on the wall of the rotating box 20. The blades 21 are rectangular cutters. The rotating box 20 is mounted on a machine body equipped with a motor. The motor can drive the rotating box 20 to rotate. The motor is electrically connected to a power source. In use, the blades 21 are aligned with the die orifice of the extruder. This is existing technology and will not be described in detail here.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the control structure is set on the wall of the rotating box 20 to control the length of each blade 21. The control structure includes: an adjusting column 30, a rotating tooth 31, a limiting groove 32, a sliding plate 33, and a meshing tooth 35. The adjusting column 30 is rotatably connected to the center of the cavity of the rotating box 20. The rotating tooth 31 is fixedly connected to the outer wall of the adjusting column 30. The limiting groove 32 is opened on the inner wall of the cavity of the rotating box 20. The sliding plate 33 is slidably connected in the limiting groove 32. The meshing tooth 35 is opened on the wall of the sliding plate 33. The rotating tooth 31 can mesh with the meshing tooth 35. The blade 21 is installed on the wall of the sliding plate 33 by bolts.

[0029] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the adjusting column 30 is cylindrical, and the rotating teeth 31 are formed on the arc surface of the adjusting column 30. Four identical limiting grooves 32 are evenly formed inside the cavity of the rotating box 20. Each limiting groove 32 contains an identical sliding plate 33. The plane of each limiting groove 32 is tangent to a quadrant point of the adjusting column 30. The sliding plate 33 and the blade 21 can extend from the limiting groove 32. The rotating teeth 31 can simultaneously engage with the teeth 35 on the walls of all the sliding plates 33. The control structure also includes a limiting block 34 and a front plate 41. The limiting block 34 is fixedly connected to the side wall of each sliding plate 33, and the front plate 41 is detachably connected to the front wall of the rotating box 20. The front plate 41 can rotate the box... The front wall of the 20 is blocked by an opening. The limiting block 34 is an arc-shaped block. The arc surface of the limiting block 34 can contact the inner wall of the cavity of the rotating box 20 as the sliding plate 33 slides. The front plate 41 is disc-shaped. The wall of the front plate 41 is obliquely opened at the position of each limiting groove 32 to accommodate the blade 21. The wall of the front plate 41 is provided with a locking structure, which includes: a locking post 42, a screw 43 and a locking groove 40. The locking post 42 is fixedly connected to the rear wall of the front plate 41. The screw 43 is threadedly connected to the front wall of the front plate 41. The locking groove 40 is opened on the front wall of the adjusting post 30. The locking groove 40 is provided with a threaded groove that accommodates the screw 43.

[0030] In practical use, first align the blade 21 with the die orifice of the extruder, then turn on the motor. The motor will drive the rotating box 20 to rotate when the power is on. As the rotating box 20 rotates, it will cause all its structures, including the blade 21, to rotate. The rotating blade 21 will pass through the die orifice of the extruder and scrape off the overflowing plastic liquid particles. The scraped plastic liquid particles will then fall into the water to form the extrusion. When it is necessary to adjust the position of the blade 21 to match the die orifice position, turn the screw 43 to remove it from the front plate 41. The front plate 41 will then be unlocked. At this time, rotate the adjusting column 30. As the adjusting column 30 rotates... When the rotating teeth 31 on the wall rotate, they will rotate synchronously. As the rotating teeth 31 rotate, they will engage with the meshing teeth 35 to drive all the sliding plates 33 to move along the limiting groove 32. When the sliding plates 33 move, they will drive the limiting block 34 and the blade 21 to move synchronously. After adjusting the position of the blade 21 to the required position, the front plate 41 is placed back on the front wall of the rotating box 20, and the locking pin 42 is inserted into the locking groove 40. Finally, the screw 43 is tightened to complete the installation. The adjusting pin 30 will be fixed in position due to the insertion of the locking pin 42. As the position of the adjusting pin 30 is fixed, the positions of the sliding plates 33 and the blade 21 will also be fixed.

[0031] In summary, by setting up a control structure, the displacement of the four blades 21 can be controlled by rotating the adjusting column 30, thereby adapting to the die positions of different extruders without having to specifically select a pelletizer with the corresponding position. Therefore, this solution has a wide range of applications due to the adjustable position of the blades 21.

[0032] like Figure 4 and Figure 5 As shown, the locking pin 42 is cylindrical, and multiple identical semi-circular cross-section rods are fixedly connected to the arc-shaped annular array of the locking pin 42. The locking groove 40 can adapt to the outer wall size of the locking pin 42, and the screw 43 can pass through the locking pin 42 and enter the threaded groove in the locking groove 40.

[0033] In actual use, after adjusting the position of the blade 21 to the required position, the front plate 41 is placed back on the front wall of the rotating box 20, the locking pin 42 is inserted into the locking groove 40, and finally the screw 43 is tightened to complete the installation.

[0034] In summary, by setting a locking structure, the adjustable pin 30 is fixed in position by the detachable front plate 41 driving the locking pin 42, thereby effectively preventing the adjustable pin 30 from rotating on its own and improving the practicality of this solution.

[0035] Working principle: First, align the blade 21 with the die orifice of the extruder, then turn on the power of the motor. When the power is on, the motor can drive the rotating box 20 to rotate. When the rotating box 20 rotates, it will drive all the structures on its wall, including the blade 21, to rotate. The rotating blade 21 will pass through the die orifice of the extruder and scrape off the overflowing plastic liquid particles. Then the scraped plastic liquid particles fall into the water to form the plastic.

[0036] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A plastic underwater pelletizer, characterized in that, include: Rotating box (20), the rotating box (20) is a hollow cylinder, the front wall of the rotating box (20) is open, and four blades (21) are installed on the wall of the rotating box (20). The blades (21) are rectangular cutters. The control structure is set on the wall of the rotating box (20) to control the length of each blade (21). The control structure includes: an adjusting column (30), a rotating tooth (31), a limiting groove (32), a sliding plate (33), and a meshing tooth (35). The adjusting column (30) is rotatably connected to the center of the cavity of the rotating box (20). The rotating tooth (31) is fixedly connected to the outer wall of the adjusting column (30). The limiting groove (32) is opened on the inner wall of the cavity of the rotating box (20). The sliding plate (33) is slidably connected in the limiting groove (32). The meshing tooth (35) is opened on the wall of the sliding plate (33). The rotating tooth (31) can mesh with the meshing tooth (35). The blade (21) is installed on the wall of the sliding plate (33) by bolts.

2. The underwater plastic pelletizer according to claim 1, characterized in that, The adjusting column (30) is cylindrical, and the rotating teeth (31) are opened on the arc surface of the adjusting column (30). Four identical limiting grooves (32) are evenly opened in the cavity of the rotating box (20), and the same sliding plate (33) is set in each limiting groove (32).

3. The underwater plastic pelletizer according to claim 2, characterized in that, The plane of each limiting groove (32) is tangent to the quadrant point of the adjusting column (30), the slide plate (33) and the blade (21) can extend out from the limiting groove (32), and the rotating tooth (31) can simultaneously mesh with the teeth (35) on the wall of all slide plates (33).

4. The underwater plastic pelletizer according to claim 1, characterized in that, The control structure also includes a limiting block (34) and a front plate (41). The limiting block (34) is fixedly connected to the side wall of each slide (33), and the front plate (41) is detachably connected to the front wall of the rotating box (20). The front plate (41) can block the opening of the front wall of the rotating box (20).

5. A plastic underwater pelletizer according to claim 4, characterized in that, The limiting block (34) is an arc-shaped block. The arc surface of the limiting block (34) can contact the inner wall of the rotating box (20) as the sliding plate (33) slides. The front plate (41) is disc-shaped. The wall of the front plate (41) is obliquely opened at the position of each limiting groove (32) to accommodate the blade (21) through which it passes.

6. A plastic underwater pelletizer according to claim 4, characterized in that, The front plate (41) has a locking structure on its wall surface. The locking structure includes a locking post (42), a screw (43), and a locking groove (40). The locking post (42) is fixedly connected to the rear wall surface of the front plate (41), the screw (43) is threadedly connected to the front wall surface of the front plate (41), and the locking groove (40) is opened on the front wall surface of the adjusting post (30). The locking groove (40) has a threaded groove adapted to the screw (43).

7. A plastic underwater pelletizer according to claim 6, characterized in that, The locking pin (42) is cylindrical, and multiple identical semi-circular cross-section rods are fixedly connected to the arc-shaped annular array of the locking pin (42). The locking groove (40) can adapt to the outer wall size of the locking pin (42), and the screw (43) can pass through the locking pin (42) and enter the threaded groove in the locking groove (40).

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