Device for preparing rubber powder by adopting high-pressure water jet composite method

Abstract

The invention relates to a device for preparing rubber powder by adopting a high-pressure water jet composite method, which comprises a high-pressure water generating system, a multi-nozzle cutting head, a rotary crushing cylinder assembly, a rotary filtering cylinder assembly, a liquid collecting cylinder, a fixed seat and a base, the fixed seat comprises an upper mounting plate, a lower mounting plate and a stand column connected between the upper mounting plate and the lower mounting plate, the multi-nozzle cutting head and the rotary crushing cylinder assembly are mounted on the upper mounting plate, the rotary filtering cylinder assembly is mounted on the lower mounting plate, the liquid collecting cylinder is mounted on the stand column, and the high-pressure water generating system is communicated with the multi-nozzle cutting head. And the rotary crushing cylinder assembly comprises a crushing cylinder and a crushing rotating device. High-pressure water jet and mechanical smashing are efficiently combined, a double smashing mechanism of non-contact cutting and mechanical shearing is achieved, the production requirement of fine rubber powder is met, layered multi-nozzle covering cutting of the multi-nozzle cutting head is achieved, and energy consumption is remarkably reduced.

Description

Technical Field

[0001] The invention relates to the technical field of rubber powder preparation, in particular to a device for preparing rubber powder by adopting a high-pressure water jet compounding method. Background Art

[0002] The main method of rubber recycling is to use waste tires to produce recycled rubber, but the recycled rubber production process is backward, high energy consumption and pollutes the environment, and the resulting rubber powder has a large particle size. Due to the incompressibility, high friction coefficient and elasticity of rubber, it is not easy to crush and separate. Currently, the commonly used tire rubber crushing and rubber powder production methods at home and abroad are divided into three types: normal temperature method, low temperature method and wet method.

[0003] 1. Normal temperature method, using traditional mechanical equipment to crush, the rubber powder obtained has large particle size, and high-quality fine rubber powder cannot be obtained, the recycling value is low, and it is not suitable for tire reproduction requirements.

[0004] 2. Low-temperature crushing method, which often uses liquid nitrogen as a refrigerant, and the refrigeration temperature can reach -196°, can produce high-quality fine rubber powder with small particle size and high recycling value. However, due to excessive energy consumption and high production costs, it has poor economic efficiency and cannot be promoted and applied in engineering.

[0005] 3. Wet solution grinding method: the wet method is to place the rubber block in the solution and use the grinding disc rubber grinder and other related mechanical equipment to grind it to obtain high-quality fine rubber powder with small particle size, which has high reuse value. However, this method has high investment and low efficiency and cannot be applied in engineering.

[0006] Therefore, there is a need for a device that can produce fine rubber powder at room temperature with low energy consumption, low cost, and in a green and environmentally friendly manner. Summary of the Invention

[0007] The present invention aims to solve the deficiencies of the prior art and provides a device for preparing rubber powder by adopting a high-pressure water jet compounding method.

[0008] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:

[0009] A device for preparing rubber powder using a high-pressure water jet composite method includes a high-pressure water generating system, a multi-nozzle cutting head, a rotating crushing barrel assembly, a rotating filter barrel assembly, a liquid collecting barrel, a fixed seat and a base. The fixed seat is fixed to the base. The fixed seat includes an upper mounting plate, a lower mounting plate and a column connecting the upper mounting plate and the lower mounting plate. The multi-nozzle cutting head and the rotating crushing barrel assembly are installed on the upper mounting plate, the rotating filter barrel assembly is installed on the lower mounting plate, the liquid collecting barrel is installed on the column, the high-pressure water generating system is connected to the multi-nozzle cutting head, the rotating crushing barrel assembly includes a crushing barrel and a crushing rotating device, the multi-nozzle cutting head is sleeved on the central axis of the crushing barrel, and a cutting blade is provided on the inner wall of the crushing barrel , a spiral blade is provided on the outer wall of the crushing barrel, the crushing rotating device includes an upper hollow shaft bearing seat, a first servo motor and a hollow flange, the upper hollow shaft bearing seat and the first servo motor are installed on the upper mounting plate, the output shaft of the first servo motor is connected to a small sprocket, a large sprocket is installed on the upper end of the hollow shaft in the upper hollow shaft bearing seat, the large sprocket and the small sprocket are driven by a chain, the lower end of the hollow shaft in the upper hollow shaft bearing seat is connected to a hollow flange, and the hollow flange is connected to the top of the crushing barrel, the rotating filter barrel assembly includes a filter barrel and a filter rotating device, the filter rotating device is connected to the bottom of the filter barrel, the filter barrel is sleeved on the outside of the crushing barrel from bottom to top, the liquid collecting barrel is sleeved on the outside of the filter barrel, and a discharge pipe is provided at the bottom of the liquid collecting barrel.

[0010] The multi-nozzle cutting head adopts a fixed layered multi-nozzle cutting nozzle.

[0011] The upper mounting plate is in a convex shape, and a first mounting hole is provided on the protruding part of the upper mounting plate. The first servo motor is installed in the first mounting hole. A second mounting hole is provided on the corresponding part of the upper mounting plate and the lower mounting plate. The upper hollow shaft bearing seat is installed in the second mounting hole. A third mounting hole is provided on the lower mounting plate. The filter rotating device is installed in the third mounting hole. A horizontal cross hanging plate is fixed to the top inner wall of the column. The column is provided with four top corners of the lower mounting plate, and a groove-shaped connecting plate is fixed to the middle inner wall of the column.

[0012] The filter cartridge is a cylindrical structure with an open upper end and a closed lower end. It is provided with a filter cartridge bottom plate and a filter screen on the surrounding wall. The upper surface of the filter cartridge bottom plate facing the inside of the cartridge is provided with radially evenly distributed arc blades. The lower surface of the filter cartridge bottom plate facing away from the inside of the cartridge is provided with a flange. A scraper brush is hung on the inner side of the filter screen of the filter cartridge through a horizontal hanging plate.

[0013] The filtering rotating device includes a lower hollow shaft bearing seat and a second servo motor. The upper end of the hollow shaft of the lower hollow shaft bearing seat is connected with a flange, which is bolted to the flange at the lower end of the filter cartridge. The second servo motor is connected to the lower end of the hollow shaft of the lower hollow shaft bearing seat.

[0014] The liquid collecting cylinder comprises a cylinder body, the bottom of the cylinder body is connected to an annular bottom, the inner diameter of the annular bottom is upwardly connected to a circular anti-overflow plate, and discharge ports are symmetrically opened on both sides of the annular bottom, which are connected to a solid phase separation device.

[0015] The base includes legs and a square connecting plate. The legs are connected to the four vertices of the square connecting plate. The bottoms of the legs are connected to the stabilizing reinforcing plate. A fourth mounting hole for mounting the second servo motor is provided in the middle of the square connecting plate.

[0016] The beneficial effects of the present invention are: the present invention adopts an efficient combination of high-pressure water jet and mechanical crushing to realize a dual crushing mechanism of non-contact cutting and mechanical shearing, which meets the production needs of fine rubber powder. The multi-nozzle cutting head uses layered multi-nozzle coverage cutting, which significantly reduces energy consumption. An annular cavity is formed between the crushing cylinder and the filter cylinder. The spiral blades push the material to spiral up along the outer wall of the crushing cylinder, and form a vortex with the reverse rotation in the filter cylinder to enhance the crushing environment, realizing the integration of dynamic circulation and graded filtration of rubber powder. The high-pressure water jet and mechanical cutting work together to make the crushing environment green and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a schematic diagram of the fixing seat structure of the present invention;

[0019] Figure 3 A top view of the fixing seat of the present invention;

[0020] Figure 4 This is a schematic diagram of the filter cartridge structure of the present invention;

[0021] Figure 5 A top view of the filter cartridge of the present invention;

[0022] Figure 6 It is a schematic structural diagram of the liquid collecting cylinder of the present invention;

[0023] Figure 7 A top view of the liquid collecting cylinder of the present invention;

[0024] Figure 8 This is a schematic diagram of the base structure of the present invention;

[0025] Figure 9 A top view of the base of the present invention;

[0026] Figure: 1 - High-pressure water generating system; 2 - Multi-nozzle cutting head; 3 - Rotating crushing drum assembly; 31 - Crushing drum; 311 - Cutting blade; 312 - Spiral blade; 32 - Crushing rotating device; 321 - Large sprocket; 322 - Upper hollow shaft bearing seat; 323 - Small sprocket; 324 - First servo motor; 325 - Hollow flange; 4 - Rotating filter drum assembly; 41 - Filter drum; 411 - Filter screen; 412 - Filter drum bottom plate; 413 - Curved blade; 414 - Flange; 42 - Filter rotating device; 421 - Lower hollow shaft Support; 422-flange; 423-second servo motor; 43-scraper; 5-liquid collecting cylinder; 51-cylinder; 52-annular bottom; 53-circular anti-overflow plate; 54-discharge port; 6-fixing seat; 61-upper mounting plate; 611-first mounting hole; 612-second mounting hole; 62-lower mounting plate; 621-third mounting hole; 63-upright column; 631-grooved connecting plate; 632-cross hanging plate; 7-base; 71-support leg; 72-square connecting plate; 73-stabilizing reinforcement plate; 74-fourth mounting hole; 8-discharge pipe;

[0027] The following is a detailed description of the embodiments of the invention with reference to the accompanying drawings. DETAILED DESCRIPTION

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0029] A device for preparing rubber powder using a high-pressure water jet composite method includes a high-pressure water generating system 1, a multi-nozzle cutting head 2, a rotating crushing barrel assembly 3, a rotating filter barrel assembly 4, a liquid collecting barrel 5, a fixed seat 6 and a base 7. The fixed seat 6 is fixed on the base 7. The fixed seat 6 includes an upper mounting plate 61, a lower mounting plate 62 and a column 63 connecting the upper mounting plate 61 and the lower mounting plate 62. The multi-nozzle cutting head 2 and the rotating crushing barrel assembly 3 are installed on the upper mounting plate 61, the rotating filter barrel assembly 4 is installed on 62, and the liquid collecting barrel 5 is installed on the column 63. The high-pressure water generating system 1 is connected to the multi-nozzle cutting head 2. The rotating crushing barrel assembly 3 includes a crushing barrel 31 and a crushing rotating device 32. The multi-nozzle cutting head 2 is sleeved on the central axis of the crushing barrel 31. A cutting blade 311 is provided on the inner wall of the crushing barrel 31, and a spiral blade 3 is provided on the outer wall of the crushing barrel 31. 12. The crushing rotating device 32 includes an upper hollow shaft bearing seat 322, a first servo motor 324 and a hollow flange 325. The upper hollow shaft bearing seat 322 and the first servo motor 324 are installed on the upper mounting plate 61. The output shaft of the first servo motor 324 is connected to a small sprocket 323. A large sprocket 321 is installed on the upper end of the hollow shaft in the upper hollow shaft bearing seat 322. The large sprocket 321 and the small sprocket 323 are driven by a chain. The lower end of the hollow shaft in the upper hollow shaft bearing seat 322 is connected to a hollow flange 325. The hollow flange 325 is connected to the top of the crushing barrel 31. The rotary filter barrel assembly 4 includes a filter barrel 41 and a filter rotating device 42. The filter rotating device 42 is connected to the bottom of the filter barrel 41. The filter barrel 41 is sleeved on the outside of the crushing barrel 31 from bottom to top. The liquid collecting barrel 5 is sleeved on the outside of the filter barrel 41. A discharge pipe 8 is provided at the bottom of the liquid collecting barrel 5.

[0030] The multi-nozzle cutting head 2 adopts a fixed layered multi-nozzle cutting nozzle.

[0031] The upper mounting plate 61 is in a convex shape, and a first mounting hole 611 is provided on the protruding part of the upper mounting plate 61. The first servo motor 324 is installed in the first mounting hole 611. A second mounting hole 612 is provided on the corresponding part of the upper mounting plate 61 and the lower mounting plate 62. The upper hollow shaft bearing seat 322 is installed in the second mounting hole 612. A third mounting hole 621 is provided on the lower mounting plate 62. The filter rotating device 42 is installed in the third mounting hole 621. A horizontal cross hanging plate 632 is fixed to the top inner wall of the column 63. The four top corners of the lower mounting plate 62 are set on the column 63. A groove-shaped connecting plate 631 is fixed to the middle inner wall of the column 63.

[0032] The filter cartridge 41 is a cylindrical structure with an open upper end and a closed lower end, and is provided with a filter cartridge bottom plate 412 and a filter screen 411 on the surrounding wall. The upper surface of the filter cartridge bottom plate 412 facing the inside of the cartridge is provided with radially evenly distributed arc blades 413, and the lower surface of the filter cartridge bottom plate 412 facing away from the inside of the cartridge is provided with a flange 414. A scraper 43 is suspended on the inner side of the filter screen 411 of the filter cartridge 41 through a horizontal hanging plate 632.

[0033] The filtering rotating device 42 includes a lower hollow shaft bearing seat 421 and a second servo motor 423. The upper end of the hollow shaft of the lower hollow shaft bearing seat 421 is connected to a flange 422, and the flange 422 is bolted to the flange 414 at the lower end of the filter cartridge 41. The second servo motor 423 is connected to the lower end of the hollow shaft of the lower hollow shaft bearing seat 421.

[0034] The liquid collecting cylinder 5 includes a cylinder body 51, the bottom of the cylinder body 51 is connected to an annular bottom 52, the inner diameter of the annular bottom 52 is upwardly connected to a circular anti-overflow plate 53, and discharge ports 54 are symmetrically opened on both sides of the annular bottom 52, and the discharge ports 54 are connected to a solid phase separation device.

[0035] The base 7 includes legs 71 and a square connecting plate 72. The legs 71 are connected to the vertices of the four sides of the square connecting plate 72. The bottom of the legs 71 is connected to a stabilizing reinforcing plate 73. A fourth mounting hole 74 for mounting the second servo motor 423 is provided in the middle of the square connecting plate 72.

[0036] Example 1: Preparation of fine rubber powder with a particle size of ≤0.2 mm from waste tire rubber (styrene-butadiene rubber content ≥70%) is taken as an example.

[0037] The working pressure of the high-pressure water generating system 1 is 350MPa, and the flow rate is 20-24L / min. The high-pressure water generating system 1 is connected to the multi-nozzle cutting head 2 through a high-pressure pipe. The multi-nozzle cutting head 2 is set in the rotating crushing cylinder assembly 3, and the rotating crushing cylinder assembly 3 is set in the rotating filter cylinder assembly 4. The large sprocket 321 serves as the feed port for the rubber block. The rubber block is put into the crushing cylinder 31 through the feed port. The high-pressure water generating system 1 is started, and 350MPa water flows through the multi-nozzle cutting head 2 to form a high-speed jet, which pre-cuts the rubber block into 5-10mm fragments. The fragments are sheared twice by the cutting blade 311 as the crushing cylinder 31 rotates. At the same time, the spiral blade 312 pushes the material upward, and the outer wall of the crushing cylinder 31 and the process The annular cavity within the filter cartridge 41 forms a screw conveyor. When the crushing drum 31 and filter cartridge 41 rotate in opposite directions, the upward flow of the rubber powder liquid is accelerated. Upon reaching the top of the crushing drum 31, the material falls back through the reflux hole into the cutting area. The filter cartridge 41 then rotates in the opposite direction, intercepting substandard particles that flow back into the crushing drum 31. Qualified rubber powder enters the liquid collection drum 5. The discharge port 54 at the bottom of the collection drum 5 connects to the feed port of the solid-phase separation device, enabling rapid separation of rubber powder and water. During the rubber pellet pulverization process, the rotation, flow, and circulation of the rubber pellet liquid are accelerated. The combined action of the high-pressure water jet and the metal cutting blade 311 continuously and frequently pulverizes the rubber pellets, significantly improving the efficiency and effectiveness of the rubber pellet pulverization. The use of an impact filtration device not only accelerates the flow rate of the rubber powder liquid but also maximizes the actual filtration area of ​​the filter cartridge 41, significantly enhancing the filtration effect and efficiency. The pulverizing and rotating device 32 utilizes a hollow shaft bearing seat 322 and a hollow flange 325, allowing high-pressure piping to pass conveniently through the center of the hollow shaft bearing seat 322 and the fixed multi-nozzle cutting nozzle 2, which is installed within the pulverizing drum 31. This also allows the pulverizing drum 31 to rotate and function as a feed port. The cavitation and high-speed impact of the high-pressure water jet achieve low-temperature crushing of the rubber material at room temperature, thereby achieving the goal of producing fine rubber powder at room temperature with low energy consumption, low cost, and environmentally friendly efficiency.

[0038] In the description of the invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as a limitation on the invention.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of an invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0040] In the present invention, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections, or communication between them; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components, unless otherwise expressly limited. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0041] The invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the invention, or they are directly applied to other occasions without improvement, they are all within the scope of protection of the invention.

Claims

1. A device for preparing rubber powder by high-pressure water jet compounding method, characterized in that: The invention comprises a high-pressure water generating system (1), a multi-nozzle cutting head (2), a rotating crushing barrel assembly (3), a rotating filter barrel assembly (4), a liquid collecting barrel (5), a fixing seat (6) and a base (7), wherein the fixing seat (6) is fixed on the base (7), the fixing seat (6) comprises an upper mounting plate (61), a lower mounting plate (62) and a column (63) connecting the upper mounting plate (61) and the lower mounting plate (62), and the multi-nozzle cutting head (2) and the rotating crushing barrel assembly (3) are mounted on the upper mounting plate ( 61), the rotary filter drum assembly (4) is mounted on the lower mounting plate (62), the liquid collecting drum (5) is mounted on the column (63), the high-pressure water generating system (1) is communicated with the multi-nozzle cutting head (2), the rotary crushing drum assembly (3) includes a crushing drum (31) and a crushing rotating device (32), the multi-nozzle cutting head (2) is sleeved on the central axis of the crushing drum (31), a cutting blade (311) is provided on the inner wall of the crushing drum (31), and a spiral blade (312) is provided on the outer wall of the crushing drum (31). The crushing rotating device (32) includes an upper hollow shaft bearing seat (322), a first servo motor (324) and a hollow flange (325). The upper hollow shaft bearing seat (322) and the first servo motor (324) are mounted on an upper mounting plate (61). A small sprocket (323) is connected to the output shaft of the first servo motor (324). A large sprocket (321) is mounted on the upper end of the hollow shaft in the upper hollow shaft bearing seat (322). The large sprocket (321) and the small sprocket (323) are driven by a chain. The lower end of the hollow shaft in the shaft bearing seat (322) is connected to the hollow flange (325), and the hollow flange (325) is connected to the top of the crushing cylinder (31). The rotary filter cylinder assembly (4) includes a filter cylinder (41) and a filter rotating device (42). The filter rotating device (42) is connected to the bottom of the filter cylinder (41). The filter cylinder (41) is sleeved on the outside of the crushing cylinder (31) from bottom to top. The liquid collecting cylinder (5) is sleeved on the outside of the filter cylinder (41), and a discharge pipe (8) is provided at the bottom of the liquid collecting cylinder (5).

2. The device for preparing rubber powder by high-pressure water jet compounding according to claim 1, characterized in that: The multi-nozzle cutting head (2) adopts a fixed layered multi-nozzle cutting nozzle.

3. The device for preparing rubber powder by high-pressure water jet compounding according to claim 1, characterized in that: The upper mounting plate (61) is in a convex shape, and a first mounting hole (611) is provided on the protruding portion of the upper mounting plate (61), and the first servo motor (324) is installed in the first mounting hole (611). A second mounting hole (612) is provided on the portion of the upper mounting plate (61) corresponding to the lower mounting plate (62), and the upper hollow shaft bearing seat (322) is installed in the second mounting hole (612). A third mounting hole (621) is provided on the lower mounting plate (62), and the filter rotating device (42) is installed in the third mounting hole (621). A horizontal cross hanging plate (632) is fixed to the top inner side wall of the column (63), and the four top corners of the lower mounting plate (62) are set on the column (63). A groove-shaped connecting plate (631) is fixed to the middle inner side wall of the column (63).

4. The device for preparing rubber powder by high-pressure water jet compounding according to claim 3, characterized in that: The filter cartridge (41) is a cylindrical structure with an open upper end and a closed lower end, and is provided with a filter cartridge bottom plate (412), and a filter screen (411) on the peripheral wall. The upper surface of the filter cartridge bottom plate (412) facing the inside of the cartridge is provided with radially evenly distributed arc blades (413), and the lower surface of the filter cartridge bottom plate (412) facing away from the inside of the cartridge is provided with a flange (414). A scraper (43) is suspended on the inner side of the filter screen (411) of the filter cartridge (41) via a horizontal suspension plate (632).

5. The device for preparing rubber powder by high-pressure water jet compounding according to claim 4, characterized in that: The filtering rotating device (42) includes a lower hollow shaft bearing seat (421) and a second servo motor (423), the upper end of the hollow shaft of the lower hollow shaft bearing seat (421) is connected to a flange (422), the flange (422) is bolted to the flange (414) at the lower end of the filter cartridge (41), and the second servo motor (423) is connected to the lower end of the hollow shaft of the lower hollow shaft bearing seat (421).

6. The device for preparing rubber powder by high-pressure water jet compounding according to claim 1, characterized in that: The liquid collecting cylinder (5) comprises a cylinder (51), the bottom of the cylinder (51) is connected to an annular bottom (52), the inner diameter of the annular bottom (52) is upwardly connected to a circular anti-overflow plate (53), and discharge ports (54) are symmetrically opened on both sides of the annular bottom (52), and the discharge ports (54) are connected to a solid phase separation device.

7. The device for preparing rubber powder by high-pressure water jet compounding according to claim 5, characterized in that: The base (7) includes legs (71) and a square connecting plate (72), wherein the legs (71) are connected to the vertices of the four sides of the square connecting plate (72), the bottom of the legs (71) is connected to a stabilizing reinforcing plate (73), and a fourth mounting hole (74) for mounting a second servo motor (423) is provided in the middle of the square connecting plate (72).

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