A screw type rubber refining machine

Abstract

A screw-type rubber refining mill has a motor and a reducer at one end of the base. The motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the screw shaft. The screw shaft has three threaded sections and two moving blade sections spaced apart from back to front. Moving blades are installed on the outer circumference of the moving blade sections. A feeding section is fitted outside the threaded sections on the rear side of the screw, connecting to a hopper. The hopper outlet is located above the annular groove of the threaded section. The rear end of the feeding section is connected to the reducer housing, and the front end is connected to the rear end of the barrel. The barrel is fitted around the outside of the screw shaft. The inner side of the barrel has pins corresponding to the annular groove of the threaded section and fixed blades corresponding to the moving blades. The front end of the barrel is connected to the mill head. The lower part of the barrel is connected to the other end of the base via a support. A die plate is provided on the screw shaft at the front end of the barrel, and a rotating cutter is provided on the screw shaft outside the die plate. This invention ensures thorough refining of rubber granules, increases granule yield, reduces energy consumption, and does not cause pollution.

Description

Technical Field

[0001] This invention relates to the field of mechanical equipment technology. Background Technology

[0002] Existing rubber refining mills on the market consist of a pair of relatively rotating rollers. By utilizing the difference in linear velocity between the rollers, the recycled rubber product attached to the rollers is sheared at the meshing point, thus refining the recycled rubber product. However, existing refining mills only shear the recycled rubber product at the meshing point, resulting in short shearing times and poor refining effects. Multiple machines are needed for repeated shearing and refining to ensure the recycled rubber product meets the required specifications. Furthermore, refining recycled rubber products simultaneously on multiple machines leads to high energy consumption and low output. Moreover, the two-roll rubber refining mill has an open structure, generating large amounts of smoke and harmful gases during the shearing and refining process. The indiscriminate emission of these smoke and harmful gases can harm human health and pollute the environment. Additionally, the hollow rollers in the two-roll rubber refining mill have poor cooling effects, low heat transfer efficiency, and high refining temperatures, making it impossible to refine the rubber granules into high-specification products. Summary of the Invention

[0003] To address the aforementioned problems of existing rubber refining mills, this invention provides a screw-type rubber refining mill.

[0004] The technical solution adopted by the present invention to achieve the above objectives is as follows: a screw-type rubber refining mill, comprising a base, a motor, a reducer, a screw shaft, a screw, a feeding section, a barrel, moving blades, and fixed blades. One end of the base is equipped with a motor and a reducer. The motor is connected to the input shaft of the reducer, and the output shaft of the reducer is connected to the screw shaft. The screw shaft is fitted with three threaded sections and two moving blade sections at intervals from back to front. Moving blades are installed on the outer circumference of the moving blade sections. A feeding section is fitted outside the threaded sections on the rear side of the screw. The feeding section is connected to a hopper, and the hopper outlet is located above the annular groove of the threaded section. The rear end of the feeding section is connected to the reducer housing, and the front end of the feeding section is connected to the rear end of the barrel. The barrel is fitted outside the screw shaft. The inner side of the barrel is provided with pins corresponding to the annular groove of the threaded section and fixed blades corresponding to the moving blades. The front end of the barrel is connected to the die head. The lower part of the barrel is connected to the other end of the base via a support. A die plate is provided on the screw shaft at the front end of the barrel, and a rotating cutter is provided on the screw shaft outside the die plate.

[0005] The motor is connected to the base via a motor base, and the output shaft of the motor is connected to the input shaft of the reducer via a coupling.

[0006] The speed reducer is connected to the base via a speed reducer base, and the output shaft of the speed reducer is connected to the screw shaft via a tie rod.

[0007] The barrel consists of two parts: a first barrel and a second barrel. The first barrel and the second barrel are respectively installed on the outside of the two moving blade sections and are fixedly connected. Cooling holes are provided around the circumference of both the first barrel and the second barrel.

[0008] Both the threaded section and the moving cutter section are connected to the screw shaft by a key. A feeding section bushing is provided between the feeding section and the threaded section on the rear side. A cooling jacket is provided inside the circumferential direction of the feeding section, and the cooling jacket is connected to a cooling device.

[0009] The pins include two rows of pins inserted into the barrel. Both rows of pins are divided into five equal parts along the circumference of the barrel. The pins include long pins and short pins, which are arranged alternately.

[0010] The moving blade includes four moving blade groups, each consisting of a first moving blade, a second moving blade, a third moving blade, and a fourth moving blade. The first, second, third, and fourth moving blades are evenly arranged on the outer circumference of the moving blade section, and the four moving blade groups form a right-handed spiral in the axial direction.

[0011] The fixed blades include two fixed blade groups, each fixed blade group includes nine rows of fixed blades, each row of fixed blades is divided into five equal parts along the circumference of the machine barrel, the fixed blades include long fixed blades and short fixed blades, and the long fixed blades and short fixed blades are arranged alternately.

[0012] The rotary cutter is connected to the screw shaft via a cutter holder.

[0013] The upper part of the machine head is equipped with a connecting flange, which is connected to the environmental protection equipment.

[0014] This invention discloses a screw-type rubber refining mill. Through the coordinated operation of multiple sets of moving and fixed blades, it forcibly squeezes, shears, and mixes the rubber granules, increasing the shearing area and refining time. The powerful conveying of the granules by multiple screws, along with the specific angled arrangement of the moving blades, reduces the conveying resistance of the rubber, increases its flowability, and simultaneously increases the yield of granules while reducing the energy consumption of the equipment. The granules are cooled through water channels in the feeding section jacket and cooling holes in the first and second barrels, resulting in higher heat transfer efficiency and better cooling during the granule's forward propulsion. This leads to lower temperatures and higher product indexes after refining. Connected to environmental protection equipment via a flange at the mill head, the fumes and harmful gases generated by the recycled rubber granules are drawn into the environmental protection equipment, ensuring a closed and orderly emission of the fumes. This makes the entire refining process harmless to humans. The collected and treated fumes and harmful gases meet national environmental emission standards and do not cause pollution. Attached Figure Description

[0015] Figure 1 This is a front view structural diagram of a screw-type rubber refining mill according to an embodiment of the present invention;

[0016] Figure 2 yes Figure 1 Sectional view at point AA;

[0017] Figure 3 yes Figure 1 Sectional view at BB;

[0018] Figure 4 This is a structural view of the screw-type rubber refining mill according to an embodiment of the present invention;

[0019] Figure 5 This is a left-side structural view of a screw-type rubber refining mill according to an embodiment of the present invention.

[0020] In the diagram: 1. Base, 2. Support, 3. Motor, 4. Motor base, 5. Coupling, 6. Reducer, 7. Reducer base, 8. Feeding section, 9. Feeding section bushing, 10. Hopper, 11. First barrel, 12. Second barrel, 13. Machine head, 14. Screw shaft, 15. Tie rod, 16. Threaded section, 17. Moving blade section, 18. Cooling equipment, 19. First moving blade, 20. Second moving blade, 21. Third moving blade, 22. Fourth moving blade, 23. Long pin, 24. Short pin, 25. Long fixed blade, 26. Short fixed blade, 27. Mouth plate, 28. Rotary cutter, 29. Blade holder, 30. Cooling jacket, 31. Connecting flange. Detailed Implementation

[0021] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0022] This embodiment describes a screw-type rubber refining mill, such as... Figure 1-5As shown, the assembly includes a base 1, a motor 3, a reducer 6, a screw shaft 14, a screw, a feeding section 8, a barrel, a moving blade, and a fixed blade. One end of the base 1 is equipped with the motor 3 and the reducer 6. To ensure a more secure connection between the motor 3 and the reducer 6 and the base 1, preferably, the motor 3 can be connected to the base 1 via a motor base 4, and the reducer 6 can be connected to the base 1 via a reducer base 7. The motor 3 and motor base 4, the motor base 4 and base 1, the reducer 6 and reducer base 7, and the reducer base 7 and base 1 are all connected by bolts. The input shaft of the motor 3 is connected to the reducer 6, and the output shaft of the reducer 6 is connected to the screw shaft 14. Preferably, the output shaft of the motor 3 can be connected to the input shaft of the reducer 6 via a coupling 5, and the output shaft of the reducer 6 can be connected to the screw shaft 14 via a key and fixed by a tie rod 15. Three threaded sections 16 and two moving blade sections 17 are installed at intervals from back to front on the outer circumferential side of the screw shaft 14. The thread of the threaded section 16 is preferably a right-handed helix, which forms an annular groove. Moving blades are installed on the outer circumference of the moving blade section 17. The motor 3 drives the input shaft of the reducer 6 to rotate through the coupling 5. The reducer 6 drives the output shaft of the reducer 6 to rotate clockwise through the meshing gears inside the reducer 6. The output shaft drives the screw shaft 14 to rotate. The screw shaft 14 drives the threaded section 16 and the moving blades set on the outer circumference of the moving blade section 17 to rotate synchronously. A feeding section 8 is fitted around the outer side of the threaded section 16 on the rear side of the screw. The feeding section 8 is connected to the hopper 10, and the outlet of the hopper 10 is located above the annular groove of the threaded section 16. The rear end of the feeding section 8 is connected to the housing of the reducer 6, and the front end of the feeding section 8 is connected to the rear end of the barrel. The barrel is fitted around the outer side of the screw shaft 14. The inner side of the barrel is provided with pins corresponding to the annular groove of the threaded section 16 and fixed blades corresponding to the moving blades. The front end of the barrel is connected to the head 13, and the lower part of the barrel is connected to the other end of the base 1 via a support 2. Preferably, the support 2 and the base 1 are connected by bolts. A die plate 27 is provided on the screw shaft 14 at the front end of the barrel, and a rotating cutter 28 is provided on the screw shaft 14 outside the die plate 27. To make the rotating cutter 28 more securely fixed, the rotating cutter 28 is connected to the screw shaft 14 via a cutter holder 29, and the cutter holder 29 is connected to the screw shaft 14 via a key, thereby realizing that the rotating cutter 28 and the screw shaft 14 rotate synchronously.

[0023] Both the threaded section 16 and the moving section 17 are connected to the screw shaft 14 via keys. The feeding section 8 can be connected to the housing of the reducer 6 via a flange. A cooling jacket 30 is provided circumferentially inside the feeding section 8, and the cooling jacket 30 is connected to the cooling device 18. A feeding section bushing 9 is provided between the feeding section 8 and the first screw 16, and the feeding section bushing 9 is embedded in the inner hole of the feeding section 8 and bolted together. The pins include two rows of pins inserted into the barrel, such as... Figure 3As shown, both rows of pins are evenly distributed around the circumference of the barrel, divided into five equal parts. The pins include long pins 23 and short pins 24, both extending into the annular groove of the threaded section 16. The long pins 23 and short pins 24 are staggered. The moving cutter includes four sets of moving cutters: a first moving cutter 19, a second moving cutter 20, a third moving cutter 21, and a fourth moving cutter 22. These four sets are evenly distributed outwards around the moving cutter section 17, forming a right-handed spiral in the axial direction. Preferably, two sets of moving cutters are provided on one moving cutter section 17.

[0024] The machine barrel includes a first machine barrel 11 and a second machine barrel 12. The feeding section 8, the first machine barrel 11, the second machine barrel 12, and the machine head 13 are connected sequentially by bolts. The first machine barrel 11 and the second machine barrel 12 are respectively installed on the outside of the two moving blade sections 17, and the first machine barrel 11 and the second machine barrel 12 are fixedly connected. Both the first machine barrel 11 and the second machine barrel 12 are provided with cooling rotating holes in their circumference. Preferably, there are multiple cooling rotating holes for cooling the rubber. The first machine barrel 11 and the second machine barrel 12 are provided with fixed blades in their circumference. The fixed blades include two fixed blade groups, and each fixed blade group includes nine rows of fixed blades, such as... Figure 2 As shown, each row of fixed blades is divided into five equal parts along the circumference of the barrel. The fixed blades include long fixed blades 25 and short fixed blades 26, which are staggered. The long fixed blades 25 and short fixed blades 26 can be inserted into the barrel and fixed to the barrel with bolts. The upper part of the machine head 13 is provided with a connecting flange 31, which is connected to the environmental protection equipment.

[0025] The screw threads on the outer circumferential surface of the screw rotate clockwise. When the reducer 6 drives the screw to rotate clockwise, it generates a forward thrust, which pushes the reclaimed rubber particles from the hopper 10 into the threaded section 16 forward. The long pins 23 and short pins 24 extend into the annular grooves of the screw threads on the outer circumferential surface of the threaded section 16. The threaded section 16 pushes the reclaimed rubber particles into the circumferentially staggered long pins 23 and short pins 24. The long pins 23 and short pins 24 agitate and divert the rubber particles. The different lengths of the long pins 23 and short pins 24 will agitate the rubber particles in layers, making the rubber particles more thoroughly agitated. Meanwhile, cooling holes are provided around the periphery of the first barrel 11 and the second barrel 12, and a cooling jacket 30 is also provided inside the circumferential direction of the feeding section 8, so that the rubber granules are fully cooled during the forward propulsion process, and the cooling effect is better. The recycled rubber granules are pushed into the interface between the moving blade and the fixed blade. The left and right end faces of the rotating moving blade and the left and right end faces of the fixed blade forcefully squeeze and shear the rubber granules. The front end face of the fixed blade and the right-hand spiral formed by the moving blade cooperate to stir the recycled rubber granules, which increases the shearing area, extends the refining time, and allows the rubber granules to be fully refined. In addition, it can also reduce resistance, increase the flowability of rubber granules, increase the output of rubber granules, and reduce the energy consumption of the device. The refined recycled rubber granules are extruded by the die plate 27, and the rotating cutter 28 cuts the rubber granules into rubber granules of similar size, which are then collected and stored by the storage device connected to the die head 13. The connecting flange 31 at the die head 13 is connected to the environmental protection equipment. The flue gas generated by the recycled rubber granules at the die plate 27 is drawn into the environmental protection equipment by the die head 13. The flue gas is discharged after meeting the standards, so that the entire refining process of recycled rubber is harmless to the human body. The flue gas and harmful gases generated will not cause pollution after collection and treatment.

[0026] The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A screw-type rubber refining mill, characterized in that, The machine includes a base (1), a motor (3), a reducer (6), a screw shaft (14), a feeding section (8), a barrel, moving blades, and fixed blades. One end of the base (1) is equipped with a motor (3) and a reducer (6). The motor (3) is connected to the input shaft of the reducer (6), and the output shaft of the reducer (6) is connected to the screw shaft (14). The screw shaft (14) has three threaded sections (16) and two moving blade sections (17) spaced apart from back to front. Moving blades are installed on the outer circumference of the moving blade sections (17). The screw shaft (14) has three threaded sections (16) and two moving blade sections (17) spaced apart from back to front. Moving blades are installed on the outer circumference of the moving blade sections (17). The screw shaft (14) has three threaded sections (16) and two moving blade sections (17) spaced apart from back to front. 6) is fitted with a feeding section (8) on its outer side. The feeding section (8) is connected to the hopper (10). The outlet of the hopper (10) is located above the annular groove of the rear threaded section (16). The rear end of the feeding section (8) is connected to the housing of the reducer (6). The front end of the feeding section (8) is connected to the rear end of the barrel. The barrel is fitted on the outside of the screw shaft (14). The inner side of the barrel is provided with a pin corresponding to the annular groove of the rear threaded section (16) and a fixed blade corresponding to the moving blade. The front end of the barrel is connected to the head (13). The lower part of the barrel is connected to the support ( 2) Connected to the other end of the base (1), the screw shaft (14) is provided with a mouth plate (27) at the front end of the barrel, and a rotating cutter (28) is provided on the outside of the mouth plate (27) on the screw shaft (14). The pins include two rows of pins inserted into the barrel. Both rows of pins are equally divided along the circumference of the barrel. The pins include long pins (23) and short pins (24). The long pins (23) and short pins (24) are circumferentially staggered. The moving blades include four moving blade groups. The moving blade group includes a first moving blade (19), a second moving blade (10), a third moving blade (11), a fourth moving blade (12), and a fifth moving blade (13). The first moving cutter (19), the second moving cutter (20), the third moving cutter (21), and the fourth moving cutter (22) are evenly arranged on the outer side of the moving cutter section (17) in the circumferential direction. The four moving cutter groups form a right-handed spiral in the axial direction. The fixed cutter includes two fixed cutter groups. Each fixed cutter group includes nine rows of fixed cutters. Each row of fixed cutters is divided into five equal parts along the circumference of the barrel. The fixed cutter includes a long fixed cutter (25) and a short fixed cutter (26). The long fixed cutter (25) and the short fixed cutter (26) are arranged alternately.

2. The screw-type rubber refining mill according to claim 1, characterized in that, The motor (3) is connected to the base (1) via the motor base (4), and the output shaft of the motor (3) is connected to the input shaft of the reducer (6) via the coupling (5).

3. The screw-type rubber refining mill according to claim 1, characterized in that, The reducer (6) is connected to the base (1) via the reducer base (7), and the output shaft of the reducer (6) is connected to the screw shaft (14) via the pull rod (15).

4. The screw-type rubber refining mill according to claim 1, characterized in that, The barrel consists of two parts: a first barrel (11) and a second barrel (12). The first barrel (11) and the second barrel (12) are respectively installed on the outside of the two moving blade sections (17). The first barrel (11) and the second barrel (12) are fixedly connected. Both the first barrel (11) and the second barrel (12) are provided with cooling holes in the circumference.

5. A screw-type rubber refining mill according to claim 1, characterized in that, The threaded section (16) and the moving blade section (17) are both connected to the screw shaft (14) by a key. A feeding section bushing (9) is provided between the feeding section (8) and the threaded section (16) on the rear side. A cooling jacket (30) is provided in the circumferential interior of the feeding section (8). The cooling jacket (30) is connected to the cooling device (18).

6. A screw-type rubber refining mill according to claim 1, characterized in that, The rotary cutter (28) is connected to the screw shaft (14) via the cutter holder (29).

7. A screw-type rubber refining mill according to claim 1, characterized in that, The upper part of the machine head (13) is provided with a connecting flange (31), which is connected to the environmental protection equipment.

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