Natural rubber crushing method and device
Technical Field
The invention relates to the technical field of rubber processing, in particular to a method and a device for crushing natural rubber.
Background
At present, the rubber industry is one of important basic industries of national economy in China, and in the development of the industry, more and higher requirements are put forward on rubber products according to different use requirements.
The existing rubber crusher adopts a single roller mode, has low rubber crushing efficiency, sometimes needs secondary crushing, and has high energy consumption. In addition, in the existing rubber breaking, large rubber blocks are difficult to break into small rubber blocks at one time in the pretreatment process due to the fact that the viscosity of rubber is high, breaking efficiency is low, and therefore post-treatment is complicated.
The Chinese patent 201410333716.3 relates to a double stirring rubber crusher, wherein a roller device, a rubber cutting knife set and a power mechanism are arranged in a rubber crushing chamber, the roller device is arranged at the top of the rubber crushing chamber and comprises two rollers matched with each other, and a rubber scraping knife is arranged at the two sides of the roller close to the inner wall of the stirring chamber; the rubber cutting knife group comprises a movable knife and a fixed knife which are matched with each other; the power mechanism comprises a motor for driving the roller to rotate and the rubber cutter group to rotate; the upper part in the dual stirring chamber set up rotatory agitator, be provided with helical teeth on the horizontal rotation axle of rotatory agitator, the indoor middle part of dual stirring sets up the slope screen cloth, the lower extreme of slope screen cloth passes through the recovery pipe and is connected with the recovery pump, the indoor below of dual stirring sets up "V" type agitator. The rubber is chopped after being pressed into slices, so that the energy consumption of crushing rubber is reduced, double stirring is performed through the rotary stirrer and the V-shaped stirrer, the rubber crushing effect is good, the plasticity of the rubber is improved, and rubber mixing is easier.
However, most of rubber crushing devices equipped by domestic rubber product production methods at the present stage are traditional vertical hydraulic rubber cutters or horizontal multi-cutter hydraulic rubber cutters, so that the rubber cutting efficiency is low, the size uniformity of the processed rubber is poor, and the requirement of a low-temperature one-time mixing method cannot be met. Therefore, there is a need for an efficient method and apparatus for crushing natural rubber to solve the above problems.
Disclosure of Invention
In view of the above, the present invention provides a method and apparatus for crushing natural rubber.
In order to achieve the above purpose, the present invention is realized by the following technical scheme:
A natural rubber crushing device comprises a frame, a first-stage crushing chamber 1, a second-stage crushing chamber 2 and a rubber material conveying mechanism 3;
The primary rubber crushing chamber 1 has the function of rolling large blocks of natural rubber into sheets through a roller device;
Preferably, fixed cutters are arranged in the first-stage rubber crushing chamber (1) and the second-stage rubber crushing chamber (2), wherein the fixed cutters (1-14) in the first-stage rubber crushing chamber (1) are matched with rollers, natural rubber can be further crushed, rubber is prevented from being glued on the inner wall of the first-stage rubber cutting chamber (1), and the fixed cutters (2-20) in the second-stage rubber crushing chamber (2) mainly play roles in receiving and shearing rubber materials.
Further, the first-stage rubber crushing chamber 1 comprises a roller shell 1-1, a cutter 1-2, a large belt pulley 1-3, a belt 1-4, a small belt pulley 1-5, a coupler 1-6, a motor 1-7, a gear 1-8, a bearing seat 1-9, a first-stage rubber crushing chamber base 1-10, a roller rotating shaft 1-11, a fixed cutter seat 1-12, a fixed cutter wedge 1-13, a fixed cutter 1-14 and a discharge port 1-15;
Further, the cutter 1-2 is connected with the roller rotating shaft 1-11 in a welding mode to form two rollers which are matched with each other, the cutter 1-2 is provided with uniformly distributed grooves, the two rollers are fixed in the roller shell 1-1 through bearings and bearing blocks 1-9, fixed cutter holders 1-12 are arranged on two sides of the rollers close to the inner wall of the roller shell 1-1, the fixed cutter holders 1-12 are connected with the roller shell 1-1 in a threaded bolt mode, and the fixed cutter holders 1-12 are connected with fixed cutter wedges 1-13 and fixed cutters 1-14 through threaded bolts. The two sides of the roller rotating shaft 1-11 are connected with the roller shell 1-1 through bearings, the bearings are fixed through bearing blocks 1-9, one end of the roller rotating shaft 1-11 is connected with the gear 1-8 through shaft key connection, and the two gears 1-8 are meshed with each other. The other end of the roller rotating shaft 1-11 is connected with a large belt pulley 1-3 through a shaft key, the large belt pulley 1-3 is connected with a small belt pulley 1-5 through a belt 1-4, and the small belt pulley 1-5 is connected with a motor 1-7 through a coupler 1-6. The first-stage rubber crushing chamber base 1-10 supports a first motor 1-7. The first discharging port 1-15 is connected with the first-stage rubber crushing chamber base 1-10 in a welding mode.
Preferably, the secondary rubber crushing chamber 2 has the function of further crushing the natural rubber which is rolled into pieces by a roller device;
the device comprises an upper cover 2-1 of a rubber crushing chamber, a lower cover 2-2 of the rubber crushing chamber, a second large belt pulley 2-3, a second belt pulley 2-4, a second small belt pulley 2-5, a coupler shaft 2-6, a coupler 2-7, a second motor 2-8, a second-stage rubber crushing chamber base 2-9, a second discharge port 2-10, a rotating shaft 2-11, a bearing sleeve 2-12, a bearing 2-13, a movable cutter holder 2-14, a screen 2-15, a movable cutter 2-16, a movable cutter wedge block 2-17, a fixed cutter seat 2-18, a fixed cutter wedge block 2-19 and a fixed cutter II 2-20;
Further, the device is mainly characterized in that a screen 2-15 and a fixed cutter seat II 2-18 are fixedly arranged on a lower cover 2-1 of the rubber crushing chamber through bolt connection, the fixed cutter seat II 2-18 is arranged above the screen 2-15, and a fixed cutter II 2-20 is fixedly arranged on the fixed cutter seat II 2-18 through a fixed cutter wedge block II 2-19. The movable cutter 2-16 is fixed on the movable cutter holder 2-14 through the movable cutter wedge block 2-17, the spacing angle of the movable cutter 2-16 on the movable cutter holder 2-14 is 120 degrees, the movable cutter holder 2-14 with the movable cutter 2-16 is arranged on the rotating shaft 2-11, and a plurality of movable cutter holders 2-14 are spirally arranged on the rotating shaft 2-11. The rotating shaft 2-11 is connected with the upper cover 2-1 of the rubber crushing chamber through a bearing 2-13, and the bearing 2-13 is connected with the upper cover 2-1 of the rubber crushing chamber through a bearing sleeve 2-12.
The upper cover 2-1 of the breaking rubber room is fixed with the lower cover 2-1 of the breaking rubber room through bolts and nuts, the rotating shaft 2-11 is connected with the second large belt pulley 2-3 through shaft key connection, the second large belt pulley 2-3 is connected with the second small belt pulley 2-5 through the second belt pulley 2-4, the second small belt pulley 2-5 is connected with the second motor 2-8 through the shaft coupling shaft 2-6 and the shaft coupling 2-7, and the shaft coupling shaft 2-6 and the shaft coupling 2-7 are connected through shaft key connection. The second-stage rubber crushing chamber base 2-9 supports a second motor 2-8. And the second discharging port 2-10 is connected with the second-stage rubber crushing chamber base 2-9 in a welding mode.
Preferably, the function of the gum material transporting mechanism 3 is to transport the crushed natural rubber;
Comprises a conveyor belt 3-1, a bearing fixing seat 3-2, a flat belt support plate 3-3, a flat belt shaft 3-4, a large belt pulley III-5, a belt III-6, a small belt pulley III-7, a gear motor 3-8, a motor base 3-9, a flat belt bracket 3-10 and a collecting box 3-11.
The belt conveyor is characterized in that a flat belt support 3-10 supports a flat belt support plate 3-3, a speed reducing motor 3-8 is connected with a small belt pulley III 3-7 through shaft key connection, a large belt pulley III 3-5 is connected with a small belt pulley III 3-7 through a belt III 3-6, a flat belt shaft 3-4 is connected with a large belt pulley III 3-5 through shaft key connection, and a flat belt shaft 3-4 is connected with a bearing fixing seat 3-2 through a bearing. The flat belt support plate 3-3 is used for supporting the conveyor belt 3-1, the motor base 3-9 is used for supporting the gear motor 3-8, the flat belt shaft 3-4 is fixedly connected with the flat belt support plate 3-3, and the flat belt support plate 3-3 is fixedly connected with the flat belt support frame 3-10. A collection box 3-11 is placed at the end of the conveyor belt 3-1 for collecting the glue stock.
The invention also relates to a natural rubber crushing method, which comprises the following steps:
1. firstly, large blocks of natural rubber are added into a first-stage rubber crushing chamber 1 from a feed inlet, the natural rubber is rolled into sheets after the two rollers rotate oppositely, and meanwhile, a fixed cutter I1-14 is arranged on the inner wall of the first-stage rubber crushing chamber for scraping rubber, so that the rubber is prevented from being glued on the rollers and the inner wall of the rubber crushing chamber.
2. The rolled rubber falls into a secondary rubber crushing chamber 2, the sheet natural rubber is crushed into small pieces of rubber by the rotary extrusion shearing action of a movable cutter 2-16 which is arranged in a spiral manner, meanwhile, a fixed cutter 2-20 is arranged on the inner wall of a lower cover of the rubber crushing chamber, rubber is crushed by matching with the movable cutter 2-16, after the rubber is crushed, rubber conforming to the size of a sieve mesh flows out from a discharge hole 2-10 through a bottom screen 2-15, and rubber not conforming to the size is sheared again by the movable cutter 2-16 until the rubber conforms to the size requirement.
3. Finally, the sizing material enters a sizing material conveying mechanism 3 for conveying and finally enters a collecting tank 3-11. And finishing the working flow.
The technical scheme of the invention has at least the following advantages and beneficial effects:
1. the invention provides a method and a device for crushing natural rubber, which are used for replacing a traditional vertical hydraulic rubber cutter or a horizontal multi-cutter hydraulic rubber cutter. The device comprises a first-stage breaking chamber, a second-stage breaking chamber and a sizing material conveying mechanism. The primary rubber crushing chamber is used for crushing large natural rubber into small blocks or sheets, so that the next processing is facilitated, the energy consumption of the crushed rubber is reduced, and the impact load born by a cutter in the secondary rubber crushing chamber is reduced; the secondary rubber crushing chamber is internally provided with a detachable fixed knife and a screen with evenly distributed screen holes for further crushing the natural rubber rolled into pieces, so that the rubber cutting efficiency is improved, and the size uniformity of the crushed rubber is ensured; the rubber material conveying mechanism is used for conveying and collecting the crushed rubber.
2. The invention has the key technical points that the primary rubber crushing chamber and the secondary rubber crushing chamber are provided with the fixed cutters, wherein the fixed cutters in the primary rubber crushing chamber are matched with the roller, so that the natural rubber can be further crushed, the rubber is prevented from being glued on the inner wall of the primary rubber cutting chamber, and the fixed cutters in the secondary rubber crushing chamber mainly play roles in receiving and shearing the rubber.
The movable knife seat in the secondary rubber crushing chamber is provided with a movable knife, and during operation, the rubber material to be crushed moves to a cutting position along with the rotation of the movable knife, namely, the rubber material is crushed between the movable knife and the fixed knife under the extrusion shearing of the fixed knife and the movable knife. The design can be better adapted to the actual production requirement.
Drawings
FIG. 1 is an overall apparatus assembly;
FIG. 2 is a block diagram of a primary size reduction chamber; fig. 2 (a) is a three-dimensional view, and fig. 2 (b) is a cross-sectional view;
FIG. 3 is a block diagram of a secondary shredding chamber; fig. 3 (a) is a three-dimensional view, fig. 3 (b) is a front sectional view, and fig. 3 (c) is a right sectional view;
FIG. 4 is a gum material handling mechanism;
wherein, the spare part names that the reference numerals correspond to are as follows:
a first-stage breaking chamber 1, a second-stage breaking chamber 2 and a sizing material conveying mechanism 3; the device comprises a roller shell 1-1, a cutter 1-2, a large belt pulley 1-3, a belt 1-4, a small belt pulley 1-5, a coupler 1-6, a motor 1-7, a gear 1-8, a bearing seat 1-9, a first-stage rubber crushing chamber base 1-10, a roller rotating shaft 1-11, a fixed cutter seat 1-12, a fixed cutter wedge block 1-13, a fixed cutter 1-14 and a discharge port 1-15;
The device comprises an upper cover 2-1 of a rubber crushing chamber, a lower cover 2-2 of the rubber crushing chamber, a second large belt pulley 2-3, a second belt pulley 2-4, a second small belt pulley 2-5, a coupler shaft 2-6, a coupler 2-7, a second motor 2-8, a second-stage rubber crushing chamber base 2-9, a second discharge port 2-10, a rotating shaft 2-11, a bearing sleeve 2-12, a bearing 2-13, a movable cutter holder 2-14, a screen 2-15, a movable cutter 2-16, a movable cutter wedge block 2-17, a fixed cutter seat 2-18, a fixed cutter wedge block 2-19 and a fixed cutter II 2-20;
The device comprises a conveying belt 3-1, a bearing fixing seat 3-2, a flat belt support plate 3-3, a flat belt shaft 3-4, a large belt pulley III-5, a belt III-6, a small belt pulley III-7, a gear motor 3-8, a motor base 3-9, a flat belt support 3-10 and a collecting box 3-11.
Detailed Description
The invention is described below with reference to the drawings and specific embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of some embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "back", and the like indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which the product of the present invention is conventionally placed when used. Such terminology is used for convenience in describing the invention and is not to be taken as an indication or suggestion that the device or element in question must have a particular orientation, be constructed and operated in a particular orientation and therefore should not be construed as limiting the invention.
It should also be noted that, in the description of the present invention, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
As shown in fig. 1-4, the embodiment relates to a natural rubber crushing device, which comprises a frame, a primary rubber crushing chamber 1, a secondary rubber crushing chamber 2 and a rubber material conveying mechanism 3;
The primary rubber crushing chamber 1 has the function of rolling large blocks of natural rubber into sheets through a roller device;
As a preferable embodiment of the invention, the primary rubber crushing chamber (1) and the secondary rubber crushing chamber (2) are internally provided with fixed cutters, wherein the fixed cutters I (1-14) in the primary rubber crushing chamber (1) are matched with the roller, so that the natural rubber can be further crushed, the rubber is prevented from being glued on the inner wall of the primary rubber cutting chamber (1), and the fixed cutters II (2-20) in the secondary rubber crushing chamber (2) mainly play roles in receiving and shearing the rubber.
Further, the first-stage rubber crushing chamber 1 comprises a roller shell 1-1, a cutter 1-2, a large belt pulley 1-3, a belt 1-4, a small belt pulley 1-5, a coupler 1-6, a motor 1-7, a gear 1-8, a bearing seat 1-9, a first-stage rubber crushing chamber base 1-10, a roller rotating shaft 1-11, a fixed cutter seat 1-12, a fixed cutter wedge 1-13, a fixed cutter 1-14 and a discharge port 1-15;
Further, the cutter 1-2 is connected with the roller rotating shaft 1-11 in a welding mode to form two rollers which are matched with each other, the cutter 1-2 is provided with uniformly distributed grooves, the two rollers are fixed in the roller shell 1-1 through bearings and bearing blocks 1-9, fixed cutter holders 1-12 are arranged on two sides of the rollers close to the inner wall of the roller shell 1-1, the fixed cutter holders 1-12 are connected with the roller shell 1-1 in a threaded bolt mode, and the fixed cutter holders 1-12 are connected with fixed cutter wedges 1-13 and fixed cutters 1-14 through threaded bolts. The two sides of the roller rotating shaft 1-11 are connected with the roller shell 1-1 through bearings, the bearings are fixed through bearing blocks 1-9, one end of the roller rotating shaft 1-11 is connected with the gear 1-8 through shaft key connection, and the two gears 1-8 are meshed with each other. The other end of the roller rotating shaft 1-11 is connected with a large belt pulley 1-3 through a shaft key, the large belt pulley 1-3 is connected with a small belt pulley 1-5 through a belt 1-4, and the small belt pulley 1-5 is connected with a motor 1-7 through a coupler 1-6. The first-stage rubber crushing chamber base 1-10 supports a first motor 1-7. The first discharging port 1-15 is connected with the first-stage rubber crushing chamber base 1-10 in a welding mode.
As a preferred embodiment of the present invention, the secondary rubber crushing chamber 2 functions to further crush the natural rubber which is rolled into pieces by the roller device;
the device comprises an upper cover 2-1 of a rubber crushing chamber, a lower cover 2-2 of the rubber crushing chamber, a second large belt pulley 2-3, a second belt pulley 2-4, a second small belt pulley 2-5, a coupler shaft 2-6, a coupler 2-7, a second motor 2-8, a second-stage rubber crushing chamber base 2-9, a second discharge port 2-10, a rotating shaft 2-11, a bearing sleeve 2-12, a bearing 2-13, a movable cutter holder 2-14, a screen 2-15, a movable cutter 2-16, a movable cutter wedge block 2-17, a fixed cutter seat 2-18, a fixed cutter wedge block 2-19 and a fixed cutter II 2-20;
Further, the device is mainly characterized in that a screen 2-15 and a fixed cutter seat II 2-18 are fixedly arranged on a lower cover 2-1 of the rubber crushing chamber through bolt connection, the fixed cutter seat II 2-18 is arranged above the screen 2-15, and a fixed cutter II 2-20 is fixedly arranged on the fixed cutter seat II 2-18 through a fixed cutter wedge block II 2-19. The movable cutter 2-16 is fixed on the movable cutter holder 2-14 through the movable cutter wedge block 2-17, the spacing angle of the movable cutter 2-16 on the movable cutter holder 2-14 is 120 degrees, the movable cutter holder 2-14 with the movable cutter 2-16 is arranged on the rotating shaft 2-11, and a plurality of movable cutter holders 2-14 are spirally arranged on the rotating shaft 2-11. The rotating shaft 2-11 is connected with the upper cover 2-1 of the rubber crushing chamber through a bearing 2-13, and the bearing 2-13 is connected with the upper cover 2-1 of the rubber crushing chamber through a bearing sleeve 2-12.
The upper cover 2-1 of the breaking rubber room is fixed with the lower cover 2-1 of the breaking rubber room through bolts and nuts, the rotating shaft 2-11 is connected with the second large belt pulley 2-3 through shaft key connection, the second large belt pulley 2-3 is connected with the second small belt pulley 2-5 through the second belt pulley 2-4, the second small belt pulley 2-5 is connected with the second motor 2-8 through the shaft coupling shaft 2-6 and the shaft coupling 2-7, and the shaft coupling shaft 2-6 and the shaft coupling 2-7 are connected through shaft key connection. The second-stage rubber crushing chamber base 2-9 supports a second motor 2-8. And the second discharging port 2-10 is connected with the second-stage rubber crushing chamber base 2-9 in a welding mode.
As a preferred embodiment of the invention, the function of the gum material transporting mechanism 3 is to transport crushed natural rubber;
Comprises a conveyor belt 3-1, a bearing fixing seat 3-2, a flat belt support plate 3-3, a flat belt shaft 3-4, a large belt pulley III-5, a belt III-6, a small belt pulley III-7, a gear motor 3-8, a motor base 3-9, a flat belt bracket 3-10 and a collecting box 3-11.
The belt conveyor is characterized in that a flat belt support 3-10 supports a flat belt support plate 3-3, a speed reducing motor 3-8 is connected with a small belt pulley III 3-7 through shaft key connection, a large belt pulley III 3-5 is connected with a small belt pulley III 3-7 through a belt III 3-6, a flat belt shaft 3-4 is connected with a large belt pulley III 3-5 through shaft key connection, and a flat belt shaft 3-4 is connected with a bearing fixing seat 3-2 through a bearing. The flat belt support plate 3-3 is used for supporting the conveyor belt 3-1, the motor base 3-9 is used for supporting the gear motor 3-8, the flat belt shaft 3-4 is fixedly connected with the flat belt support plate 3-3, and the flat belt support plate 3-3 is fixedly connected with the flat belt support frame 3-10. A collection box 3-11 is placed at the end of the conveyor belt 3-1 for collecting the glue stock.
As a preferred embodiment of the invention, in order to break large blocks of natural rubber into small blocks or sheets, the invention is convenient for the next processing and reduces the energy consumption of breaking rubber. In the embodiment, a primary rubber crushing chamber 1 is designed, as shown in fig. 2, a roller shell 1-1 is connected with a primary rubber crushing chamber base 1-10 in a bolt and nut mode;
Further, the motor I1-7 provides driving power, the small belt wheel I1-5 is driven to rotate through the coupler, the large belt wheel I1-3 is driven to rotate through the belt I1-4, the roller rotating shaft 1-11 is driven to rotate through the shaft key connection mode, the gear 1-8 is driven to rotate through the bearing and the shaft key connection mode, the two gears 1-8 are meshed with each other, and the two rollers are driven to rotate in opposite directions, so that the crushing and the flaking of the natural rubber are realized. Further, the inner wall of the roller shell 1-1 is provided with a fixed cutter seat 1-12, the fixed cutter seat 1-12 is provided with a threaded hole for installing a fixed cutter wedge block 1-13 for clamping the fixed cutter 1-14, the cutter edge angle of the fixed cutter 1-14 is 75 degrees, the natural rubber can be further crushed, and the rubber is prevented from being stuck on the inner wall. Further, the directions of the fixed cutters 1-14 on the two sides of the first-stage rubber crushing chamber 1 are opposite, and the gap between the fixed cutters 1-14 and the roller is fixed to be 5-6mm, so that the crushing efficiency is ensured. The rubber rolled into sheets enters the next link;
as a preferred embodiment of the present invention, in order to further crush the natural rubber rolled into pieces, to prevent the equipment from being subjected to impact load, to improve the uniformity of the size of the crushed rubber, the present invention is designed with a secondary rubber cutting chamber 2;
The first-stage rubber crushing chamber base 1-10 is connected with the second-stage rubber crushing chamber 2-9 in a welding mode. As shown in FIG. 3, the second motor 2-8 provides driving power, the second small belt pulley 2-5 is driven to rotate through the shaft coupling 2-6 and the shaft coupling 2-7, the second large belt pulley 2-3 is driven to rotate through the belt 2-4, the rotating shaft 2-11 is driven to rotate through shaft key connection, further, the movable cutter holder 2-14 is arranged on the rotating shaft 2-11 in a welding mode and is used for carrying parts of the movable cutter 2-16, a cutter groove is formed in the upper cutter, the movable cutter 2-16 is installed in the cutter groove through the movable cutter wedge 2-17, a through hole is formed in the cutter groove, and the movable cutter wedge 2-17 is installed on the movable cutter holder 2-14 through bolts so as to fix the position of the movable cutter 2-16. Further, after the sizing material rolled into pieces through the primary sizing chamber falls into the secondary sizing chamber, the movable cutter 2-16 arranged on the movable cutter seat 2-14 drives the sizing material to move together, the cutting edge angle of the movable cutter 2-16 is 45 degrees for convenient design and certain performance guarantee, no hole is arranged on the movable cutter 2-16 for guaranteeing the mechanical strength of the movable cutter 2-16, the movable cutter is tightly arranged on the movable cutter seat 2-14 through the movable cutter wedge block 2-17, the movable cutter wedge block 2-17 is trapezoid and is matched with an inclined plane on the movable cutter seat 2-14 to clamp the movable cutter 2-16, and the movable cutter wedge block 2-17 is provided with a through hole for screwing a bolt. Further, the second fixed cutter seat 2-18 is fixed on the lower cover 2-2 of the rubber crushing chamber in a threaded bolt mode, the second fixed cutter seat 2-18 is a part for installing the second fixed cutter 2-20, and a threaded hole is formed in the second fixed cutter seat 2-18 to install the second fixed cutter wedge block 2-19 for clamping the second fixed cutter 2-20. When the fixed knife II 2-20 is installed, the knife tip is required to be ensured to be opposite to the knife tip of the movable knife 2-16, and the directions are opposite.
Further, the cutting edge angle of the fixed cutter II 2-20 is 75 degrees, and the gap between the fixed cutter II 2-20 and the movable cutter 2-16 is fixed to be 4-5mm, so that the crushing efficiency is ensured. Further, when the rubber material moves between the movable cutter 2-16 and the fixed cutter 2-20, the rotary movable cutter 2-16 and the fixed cutter 2-20 break the rubber material through shearing and extrusion, and the rubber blocks are gradually broken into small blocks through cyclic reciprocating shearing and extrusion.
Further, the block rubber conforming to the specification size is discharged from the mesh openings of the screens 2 to 15. The main structure of the screen 2-15 is a semicircular cylindrical surface which is arranged on the lower cover 2-2 of the breaking room through bolt connection, and is provided with screen holes, wherein the shape of the screen holes is a square circumcircle with the side length of 50 mm. In order to maximize the number of the sieve holes and increase the discharging efficiency, the sieve holes are distributed in an equilateral triangle shape, and the interval of the sieve holes is 10mm;
As a preferred embodiment of the invention, in order to more conveniently convey and collect crushed rubber, the invention designs a rubber material conveying mechanism 3, wherein the rubber material conveying mechanism 3 is fixed under a second discharging hole 2-10, as shown in fig. 4, the design is that a small belt pulley 3-7 is driven by a gear motor 3-8 in a shaft key connection mode, a large belt pulley 3-5 is connected by a V belt, a flat belt shaft 3-4 is driven to rotate by shaft key connection and a bearing, the conveyer belt 3-1 is driven to move by friction between the conveyer belt 3-1 and the flat belt shaft 3-4, and further the crushed rubber is conveyed into a collecting box 3-11. Thereby completing the whole glue breaking process.
The above embodiments are merely for illustrating the technical scheme of the present invention and not for limiting the same. Any modification or partial replacement without departing from the spirit of the invention shall be covered by the scope of the claims of the present invention.