CN111688068A

CN111688068A - Waste tire crushing device and crushing method thereof

Info

Publication number: CN111688068A
Application number: CN202010573684.XA
Authority: CN
Inventors: 卢再佰; 张正
Original assignee: Beihai Chuanchuang Environmental Protection Technology Co ltd
Current assignee: Mengcheng SHISU Information Technology Co.,Ltd.
Priority date: 2020-06-22
Filing date: 2020-06-22
Publication date: 2020-09-22
Anticipated expiration: 2040-06-22
Also published as: CN111688068B

Abstract

The invention discloses a waste tire crushing device and a crushing method thereof, belonging to the technical field of waste tire crushing, and the waste tire crushing device comprises a box body, wherein a feed inlet is arranged at the top of the box body, supporting legs are arranged at four corners of the bottom of the box body, and a discharge outlet is arranged at the rear end part of the box body, and the box body also comprises: the crushing mechanism is arranged in the feed inlet; the first driving mechanism is arranged at the front end part of the box body and is also connected with the crushing mechanism to realize the rotation of the crushing mechanism; the rubber crusher comprises a box body, a herringbone heat insulation plate and a plurality of groups of discharge holes, wherein the herringbone heat insulation plate is arranged between the front inner wall and the rear inner wall of the box body, the discharge holes are formed in the top of the herringbone heat insulation plate, and a first crushing chamber is formed between the herringbone heat insulation plate and a feed inlet.

Description

Waste tire crushing device and crushing method thereof

Technical Field

The invention relates to the technical field of waste tire crushing, in particular to a waste tire crushing device and a waste tire crushing method.

Background

At present, about 1 hundred million waste tires are generated in China every year, waste tires piled up in mountains in open places in the suburbs are not only harmful to the view, but also have the risk of serious accidents caused by natural fire, and the recovery rate of the waste tires is generally considered to exceed nine months, so that the waste tires are outstanding in the utilization of waste materials in industrial wastes.

The rubber powder obtained from waste tires is very valuable in utilization, and a new utilization field has been successfully developed from a paving material for preventing freezing, however, the current situation is that the rubber powder, even square pieces of around 5mm, up to around 200 yen per kg, have not actually reached the practical stage, fortunately but unfortunately, since the scrap tire fragments can be used as high-quality fuel, the idea of burning the scrap tire pieces straightforwardly is still deep in the future, however, in European and American countries, the tire rubber is attached again, the secondary and tertiary renewal of the tire is treated as a very important thing, however, in our country where all raw materials are supplied by imports, large consumption of rubber is not allowed to be performed without change, and it is necessary to actively shift the utilization of waste tires from heat utilization to material recycling which effectively utilizes the properties of rubber.

At present, the crushing and crushing of tire rubber are carried out by adopting a double-shaft shearing crusher or a single-shaft impact crusher, which are used for cutting rubber by relatively moving a double-shaft rotating knife with a sharp blade or a rotating blade and a fixed blade with a gap as small as possible, usually about 0.1mm, but when the rubber in the waste tire is crushed, the crushing can generate larger heat, the rubber is inflammable, the possibility of flammability of the rubber easily occurs in the high-speed crushing process, the rubber has heavier mass, the rubber can be accumulated on a bottom layer during the crushing, the rubber is not easy to be crushed, the problem that how to reduce the mass and make the rubber not flammable in the crushing process needs to be solved is solved, and the crushing effect of the existing crushing mechanism is low due to the simple and unreasonable structure, The crushing efficiency is low.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a waste tire crushing device and a crushing method thereof, which are convenient to heat during crushing, reduce the quality of rubber, prevent the waste tire from being accumulated on a bottom layer through the bubbling of helium gas so as to carry out efficient stirring, ensure that the rubber is not flammable during the crushing process because the helium gas belongs to inert gas, reduce the temperature through cooling, quickly cool the waste tire, and have good crushing effect and high efficiency.

2. Technical scheme

In order to solve the problems, the invention adopts the following technical scheme:

the utility model provides a junked tire breaker, is provided with feed inlet, bottom four corners department including the top and all is provided with the supporting legs and the box that the back tip was provided with the discharge gate still includes:

the crushing mechanism is arranged in the feed inlet;

the first driving mechanism is arranged at the front end part of the box body and is also connected with the crushing mechanism to realize the rotation of the crushing mechanism;

the crushing device comprises a herringbone heat insulation plate arranged between the front inner wall and the rear inner wall of a box body and a plurality of groups of discharge holes formed in the top of the herringbone heat insulation plate, wherein a first crushing chamber is formed between the herringbone heat insulation plate and a feed inlet, and a second crushing chamber is formed between the herringbone heat insulation plate and the lower inner wall of the box body;

the first crushing mechanism is arranged in the box body and is positioned in the first crushing chamber;

the second driving mechanism is arranged at the front end part of the box body and is also connected with the first crushing mechanism to realize the rotation of the first crushing mechanism;

the second crushing mechanism is arranged in the box body and is positioned in the second crushing chamber;

the heaters are respectively arranged on the front inner wall and the rear inner wall of the box body and are positioned in the first cavity;

the device comprises a box body, a plurality of inclined helium holes, a first crushing chamber area, a second crushing chamber area, a first crushing chamber area and a second crushing chamber area, wherein the first crushing chamber area is provided with a plurality of inclined helium holes;

the helium supply mechanisms are respectively arranged on the front side and the rear side of the box body, and each group of helium supply mechanisms is respectively connected with each group of inclined helium holes so as to obliquely blow helium into the first crushing chamber;

the cooling water pipe is arranged at the bottom of the box body;

the setting is at the water-cooling supply mechanism of box front side, water-cooling supply mechanism is connected in order to realize high-efficient water-cooling with two ports of condenser tube respectively, is convenient for heat in the breakage, alleviates the quality of rubber, thereby makes it not pile up and carry out the efficient stirring at the bottom through the drum-in of helium, thereby helium belongs to inert gas simultaneously for rubber is at broken in-process nonflammable, reduces the temperature through the cooling then, makes its quick cooling, and crushing effect is good, efficient.

As a preferable scheme of the present invention, each group of helium supply mechanisms includes a helium tank, an air pump, a first air pipe, a second air pipe, a third air pipe and a fourth air pipe, the helium tank is connected to the air pump through the first air pipe, the second air pipe is disposed at an air outlet of the air pump, the third air pipe is connected to another end of the second air pipe, two ends of the third air pipe are sealed, the fourth air pipes are provided in plurality, the fourth air pipes are connected to the third air pipe, and another ends of the fourth air pipes are respectively disposed at outer orifices of the inclined helium holes and fixedly connected to the box body.

As a preferable scheme of the invention, the crushing mechanism comprises a first crushing mechanism and a second crushing mechanism, the first crushing mechanism and the first crushing mechanism both comprise a crushing shaft and a crushing roller, the crushing roller is in running fit with the inner wall of the box body through the crushing shaft, the other ends of the two crushing shafts respectively penetrate through the box body and extend to the front side of the box body, and the penetrating parts of the crushing shafts and the box body are in running fit through bearings;

the first crushing mechanism further comprises a plurality of groups of first crushing gears, a plurality of groups of first crushing disks, a plurality of groups of first crushing blades and a plurality of groups of first regular-hexagon crushing fragments, wherein one first crushing gear is arranged in each group, the first crushing gears are arranged on the circumferential surface of the crushing roller, two first crushing disks are arranged in each group, the first crushing disks are arranged on the circumferential surface of the crushing roller, a plurality of first crushing blades are arranged in each group, the plurality of first crushing blades are arranged on the circumferential surface of the first crushing disk in an annular array mode, one first regular-hexagon crushing fragment is arranged in each group, and the first regular-hexagon crushing fragments are arranged on the circumferential surface of the crushing roller;

the second crushing mechanism also comprises a plurality of groups of second crushing gears, a plurality of groups of second crushing discs, a plurality of groups of second crushing blades and a plurality of groups of second regular hexagon crushing blocks, one second crushing gear is arranged in each group, and the second crushing gears are arranged on the circumferential surface of the crushing roller, one second crushing disk is arranged in each group, and the second crushing disc is arranged on the circumferential surface of the crushing roller, the second crushing disc and the two first crushing discs are staggered with each other, each group of the second crushing blades is provided with a plurality of second crushing blades, the plurality of second crushing blades are arranged on the circumferential surface of the second crushing disc in an annular array, the directions of the second crushing blades are opposite to the first crushing blades, two second regular hexagon crushed blocks are arranged in each group, and the second regular-hexagon broken pieces are arranged on the circumferential surface of the crushing roller, and the two second regular-hexagon broken pieces and the first regular-hexagon crushing blocks are staggered with each other.

As a preferable scheme of the present invention, the first driving mechanism includes a first motor, a first driving wheel, a first driven wheel, a first driving belt, a first driving gear, and a first driven gear, the first motor is disposed on a front surface of the box, the first driving wheel is disposed at an output end of the first motor, the first driven wheel is disposed at a front end of one crushing shaft, the first driving belt is disposed between the first driving wheel and the first driven wheel, the first driving gear and the first driven gear are respectively disposed on circumferential surfaces of the two crushing shafts, the first driving gear and the first driven gear are engaged with each other to realize transmission, and the first driving gear and the first driven gear are not in contact with the box.

In a preferred embodiment of the present invention, the first crushing mechanism includes a crushing shaft and a third crushing blade, the crushing shaft is provided with a plurality of crushing blades, and a plurality of crushing shafts are arranged between the front inner wall and the rear inner wall of the box body in an equidistance rotation manner from front to back, the crushing shafts are not contacted with the top of the herringbone heat insulation plate, the front end parts of the crushing shafts penetrate through the box body and extend to the front side of the box body, the penetration part of the crushing shaft and the box body is in running fit through a bearing, a plurality of groups of third crushing blades are arranged, and the multiple groups of third crushing blades are respectively arranged on the circumferential surfaces of the crushing shafts, each group of third crushing blades is provided with two groups, the two groups of third crushing blades are respectively in bilateral symmetry about the central axis of the herringbone heat insulation plate, each group of third crushing blades is provided with multiple groups, and the multiple groups of third crushing blades are all arranged on the circumferential surfaces of the crushing shafts.

As a preferable scheme of the present invention, the second driving mechanism includes a second motor, a second driving wheel, a second driven wheel, a second transmission belt, a connection shaft, a plurality of transmission gears and a transmission rack, the second motor is disposed at a front end of the box body, the second driving wheel is disposed at an output end of the second motor, the plurality of transmission gears are disposed at front ends of the plurality of crushing shafts, the connection shaft is disposed at a front end of one of the transmission gears, the second driven wheel is disposed at a front end of the connection shaft, the second transmission belt is disposed between the second driving wheel and the second driven wheel, and the transmission rack is disposed between the plurality of transmission gears.

As a preferable aspect of the present invention, the second crushing mechanism includes a third motor and fourth crushing blades, the third motor is disposed at the bottom center of the box, an output end of the third motor penetrates through the box and extends into the box, the fourth crushing blades are provided with a plurality of sets, and the plurality of sets of fourth crushing blades are disposed on a circumferential surface of the output end of the third motor.

As a preferable scheme of the present invention, the water-cooling supply mechanism includes a cooling tank, a water pump, a first water pipe, a second water pipe, and a third water pipe, the cooling tank and the water pump are both disposed at a front side of the tank body, the water pump is connected to the cooling tank through the first water pipe, a water outlet of the water pump is connected to one port of the cooling water pipe through the second water pipe, the third water pipe is connected to another port of the cooling water pipe, and another end of the third water pipe is inserted into the cooling tank, and the cooling tank is filled with cooling water and ice cubes.

As a preferable scheme of the invention, the helium tank further comprises a group of filter screens respectively arranged on the front inner wall and the rear inner wall of the tank body, each group of filter screens is provided with a plurality of filter screens, the plurality of filter screens are transversely arranged at equal intervals, and the plurality of filter screens are respectively positioned at the inner hole openings of the plurality of inclined helium holes.

A waste tire crushing method comprises the following steps:

s1, heating: starting the two groups of heaters to heat the heaters so that most of heat is concentrated in the first crushing chamber;

s2, air discharge: firstly, starting the two air pumps, pumping out helium in a helium tank under the action of the air pumps, respectively conveying the helium to a plurality of fourth air pipes through the conveying of the second air pipe and the third air pipe, and finally obliquely blowing the helium into the box body through two groups of inclined helium holes to discharge most of air so as to fill a large amount of helium in the box body;

s3, crushing: placing rubber of waste tires into a box body through a feeding hole, starting a first motor, a second motor, a third motor and a water pump, wherein the output end of the first motor rotates to drive a first driving wheel to rotate, the first driving wheel rotates to drive a first driven wheel to rotate through a first transmission belt, the first driven wheel rotates to drive one crushing shaft to rotate, so that the first driving gear rotates, two crushing shafts and crushing rollers rotate through the meshing action of the first driving gear and the first driven gear, the rubber is efficiently crushed under the action of the first crushing gear and the second crushing gear or under the action of a plurality of second crushing blades and a plurality of first crushing blades or under the action of a first regular hexagon crushing fragment and two second regular hexagon crushing fragments, and the crushed rubber falls downwards;

s4, primary crushing: the output end of the second motor rotates to drive the second driving wheel to rotate, the second driving wheel rotates to drive the second driven wheel to rotate through the second driving belt, the second driven wheel rotates to drive the connecting shaft to rotate, so as to drive one of the transmission gears to rotate, the plurality of crushing shafts rotate together through the transmission action between the transmission rack and the plurality of transmission gears, so as to respectively drive the plurality of groups of third crushing blades to rotate, the fallen rubber is preliminarily crushed by the plurality of groups of third crushing blades and falls onto the herringbone heat insulation plate, the rubber with the width smaller than the aperture of the discharge hole falls downwards, the rubber with the width larger than the aperture of the discharge hole is blown upwards under the action of helium gas, floats in the air, is not accumulated and is crushed efficiently, meanwhile, due to the action of the two groups of heaters, the rubber is well heated, the moisture contained in the rubber is dried, and the quality of the rubber is, the rubber is easier to float, the rubber is inflammable in the crushing process due to the heating effect, but the helium gas is inert gas, so that the necessary condition of combustion is blocked, the rubber is incombustible, good safety is kept, and the rubber is crushed until the width of the rubber is smaller than the aperture of the discharge hole and falls downwards;

s5, final crushing: the output end of the third motor rotates to drive a plurality of groups of fourth crushing blades to rotate, so that rubber after preliminary crushing is efficiently crushed and thoroughly changed into rubber powder, air on the lower side of the herringbone heat insulation plate is not easy to discharge, the rubber powder is flammable and dangerous in the final crushing process, cooling water in a cooling tank is pumped out by a water pump through a first water pipe, is conveyed to a cooling water pipe through a second water pipe and returns to the cooling tank through a third water pipe to form circulation, ice blocks are added in the phase cooling tank at irregular time in the cooling process to ensure the cooling temperature, the cooling water pipe well cools the bottom of the tank body and transfers the cooling capacity into a second crushing chamber, and the herringbone heat insulation plate has good heat insulation performance, so that the heat in the first crushing chamber is not easy to enter the second crushing chamber, and the cooling capacity in the second crushing chamber is not easy to enter the first crushing chamber, thereby carry out good cooling, not only can make the condition of spontaneous combustion can not appear in smashing the in-process, also can reduce follow-up rubber powder cooling time, discharge the good rubber powder of smashing through the discharge gate at last.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) according to the invention, through the special structure of the crushing mechanism, a first crushing mode is realized through the combination of the first crushing gear and the second crushing gear, rubber can be cut in the second crushing mode through the combination of two groups of second crushing blades which are distributed in a staggered manner and have opposite directions and a group of first crushing blades, a third crushing mode is realized through the combination of the first regular hexagonal crushed pieces and the two second regular hexagonal crushed pieces which are distributed in a staggered manner, the three crushing modes are different, so that the crushing effect of the crusher is improved by two times compared with that of a common crusher, and the crusher has different functions.

(2) The invention utilizes helium gas as the necessary condition that inert gas has inertness to block rubber combustion, simultaneously blows the rubber upwards to float and prevent the rubber from accumulating, thereby improving the crushing effect to the maximum extent.

(3) According to the invention, good cooling is carried out in a water cooling mode, the cold quantity is transferred into the second crushing cavity, and the herringbone heat insulation plate has good heat insulation performance, so that the heat in the first crushing cavity is difficult to enter the second crushing cavity, and the cold quantity in the second crushing cavity is difficult to enter the first crushing cavity, thereby carrying out good cooling, not only preventing spontaneous combustion in the crushing process, but also reducing the subsequent rubber powder cooling time, and achieving multiple purposes.

(4) According to the invention, through the arrangement of the herringbone heat insulation plate, crushed rubber is easier to fall and is difficult to accumulate, and meanwhile, the herringbone heat insulation plate is easier to suspend by matching with the helium blowing direction, has good heat insulation performance, reduces the mutual influence between heating and cooling, and achieves multiple purposes.

(5) The invention is convenient for heating in the crushing process, reduces the quality of rubber, ensures that the rubber is not accumulated on the bottom layer by the bubbling of helium gas so as to carry out high-efficiency stirring, simultaneously ensures that the rubber is not flammable in the crushing process because the helium gas belongs to inert gas, and then quickly cools the rubber by cooling, thereby having good crushing effect and high efficiency.

Drawings

Fig. 1 is a first perspective view of a scrap tire breaking apparatus portion of the present invention;

fig. 2 is a partial cross-sectional perspective view of a junked tire crushing apparatus of the present invention;

fig. 3 is a partial view of a crushing mechanism in the junked tire crushing device of the present invention;

FIG. 4 is a second perspective view of a scrap tire breaking apparatus portion of the present invention;

fig. 5 is a schematic structural diagram of a scrap tire crushing device according to the present invention.

The reference numbers in the figures illustrate:

1 box body, 2 feed inlets, 3 supporting legs, 4 crushing mechanisms, 41 crushing rollers, 42 first crushing gears, 43 first crushing discs, 44 first crushing blades, 45 first regular hexagon crushed blocks, 46 second crushing gears, 47 second crushing discs, 48 second crushing blades, 49 second regular hexagon crushed blocks, 5 first driving mechanisms, 51 first motors, 52 first driving wheels, 53 first driven wheels, 54 first driving belts, 55 first driving gears, 56 first driven gears, 6 second driving mechanisms, 61 second motors, 62 second driving wheels, 63 second driven wheels, 64 second driving belts, 65 connecting shafts, 66 driving gears, 67 driving racks, 7 inclined helium air holes, 8 heaters, 9 herringbone heat insulation plates, 10 discharge holes, 11 first crushing mechanisms, 111 crushing shafts, 112 third crushing blades, 12 second crushing mechanisms, 121 third motors, 122 fourth crushing blade, 13 cooling water pipe, 14 water cooling supply mechanism, 141 cooling box, 142 water pump, 143 first water pipe, 144 second water pipe, 145 third water pipe, 15 helium supply mechanism, 151 helium tank, 152 air pump, 153 first air pipe, 154 second air pipe, 155 third air pipe and 156 fourth air pipe.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

referring to fig. 1-5, a scrap tire crushing apparatus includes a box 1 having a top portion fixedly provided with a feeding hole 2, four corners at the bottom portion fixedly provided with supporting legs 3, and a rear end portion provided with a discharging hole (not shown), which are common knowledge of those skilled in the art and therefore will not be described herein again, and the present invention further includes:

the crushing mechanism 4 is arranged in the feeding hole 2, the crushing mechanism 4 comprises a first crushing mechanism and a second crushing mechanism, the first crushing mechanism and the first crushing mechanism both comprise crushing shafts and crushing rollers 41, the crushing rollers 41 are in running fit with the inner wall of the box body 1 through the crushing shafts, the other ends of the two crushing shafts respectively penetrate through the box body 1 and extend to the front side of the box body, and the penetrating parts of the crushing shafts and the box body 1 are in running fit through bearings; the first crushing mechanism further comprises a plurality of groups of first crushing gears 42, a plurality of groups of first crushing disks 43, a plurality of groups of first crushing blades 44 and a plurality of groups of first regular-hexagon crushing blocks 45, wherein one first crushing gear 42 is arranged in each group, the first crushing gears 42 are fixedly arranged on the circumferential surface of the crushing roller 41, two first crushing disks 43 are arranged in each group, the first crushing disks 43 are fixedly arranged on the circumferential surface of the crushing roller 41, a plurality of first crushing blades 44 are arranged in each group, the first crushing blades 44 are fixedly arranged on the circumferential surface of the first crushing disks 43 in an annular array mode, one first regular-hexagon crushing block 45 is arranged in each group, and the first regular-hexagon crushing blocks 45 are fixedly arranged on the circumferential surface of the crushing roller 41; the second crushing mechanism further comprises a plurality of groups of second crushing gears 46, a plurality of groups of second crushing disks 47, a plurality of groups of second crushing blades 48 and a plurality of groups of second regular-hexagon crushing pieces 49, wherein one second crushing gear 46 is arranged in each group, the second crushing gear 46 is fixedly arranged on the circumferential surface of the crushing roller 41, one second crushing disk 47 is arranged in each group, the second crushing disks 47 are fixedly arranged on the circumferential surface of the crushing roller 41, the second crushing disks 47 and the two first crushing disks 43 are staggered mutually, a plurality of second crushing blades 48 are arranged in each group, the plurality of second crushing blades 48 are fixedly arranged on the circumferential surface of the second crushing disks 47 in an annular array, the directions of the second crushing blades 48 and the first crushing blades 44 are opposite, two second regular-hexagon crushing pieces 49 are arranged in each group, and the second regular-hexagon crushing pieces 49 are fixedly arranged on the circumferential surface of the crushing roller 41, the two broken pieces 49 of the second regular hexagon and the broken pieces 45 of the first regular hexagon are staggered with each other, through the special structure of the crushing mechanism 4, the first crushing mode is realized through the combination of the first crushing gear 42 and the second crushing gear 46, the second crushing mode can cut rubber at the same time through the combination of two groups of second crushing blades 48 which are distributed in a staggered way and have opposite directions and one group of first crushing blades 44, the third crushing mode is realized through the combination of the broken pieces 45 of the first regular hexagon and the broken pieces 49 of the two second regular hexagon which are distributed in a staggered way, and the three crushing modes are different, so that the crushing effect of the broken pieces of the second regular hexagon is twice that of a common crusher, and the broken pieces of the first regular hexagon and the broken pieces;

the first driving mechanism 5 is arranged at the front end of the box body 1, the first driving mechanism 5 is further connected with the crushing mechanism 4 to realize the rotation of the crushing mechanism 4, the first driving mechanism 5 comprises a first motor 51, a first driving wheel 52, a first driven wheel 53, a first driving belt 54, a first driving gear 55 and a first driven gear 56, the first motor 51 is fixedly arranged on the front surface of the box body 1, the first driving wheel 52 is fixedly arranged at the output end of the first motor 51, the first driven wheel 53 is fixedly arranged at the front end of one crushing shaft, the first driving belt 54 is arranged between the first driving wheel 52 and the first driven wheel 53 in a transmission manner, the first driving gear 55 and the first driven gear 56 are respectively and fixedly arranged on the circumferential surfaces of the two crushing shafts, the first driving gear 55 and the first driven gear 56 are mutually meshed to realize the transmission, and the first driving gear 55 and the first driven gear 56 are not in contact with the box body 1, the output end of the first motor 51 rotates to drive the first driving wheel 52 to rotate, the first driving wheel 52 rotates to drive the first driven wheel 53 to rotate through the first transmission belt 54, the first driven wheel 53 rotates to drive one of the crushing shafts to rotate, so that the first driving gear 55 rotates, and the two crushing shafts and the crushing roller 41 rotate through the meshing action of the first driving gear 55 and the first driven gear 56;

the rubber crusher comprises a herringbone heat insulation plate 9 fixedly arranged between the front inner wall and the rear inner wall of a box body 1 and a plurality of groups of discharge holes 10 formed in the top of the herringbone heat insulation plate 9, wherein a first crushing chamber is formed between the herringbone heat insulation plate 9 and a feed inlet 2, a second crushing chamber is formed between the herringbone heat insulation plate 9 and the lower inner wall of the box body 1, crushed rubber is easier to discharge and difficult to accumulate due to the arrangement of the herringbone heat insulation plate 9, meanwhile, the crushed rubber is easier to suspend due to the matching of the bubbling direction of helium, meanwhile, the rubber crusher has good heat insulation performance, the mutual influence between heating and cooling is reduced, multiple purposes are achieved, and the discharge holes;

a first crushing mechanism 11 arranged in the box body 1, wherein the first crushing mechanism 11 is positioned in a first crushing chamber, the first crushing mechanism 11 comprises a crushing shaft 111 and a plurality of third crushing blades 112, the crushing shaft 111 is provided with a plurality of crushing shafts 111 which are arranged between the front inner wall and the rear inner wall of the box body 1 in an equidistance rotation manner from front to back, the crushing shaft 111 is not contacted with the top of the herringbone heat insulation board 9, the front end parts of the plurality of crushing shafts 111 penetrate through the box body 1 and extend to the front side of the box body, the penetrating parts of the crushing shafts 111 and the box body 1 are in rotating fit through bearings, the third crushing blades 112 are provided with a plurality of groups, the plurality of groups of third crushing blades 112 are respectively and fixedly arranged on the circumferential surfaces of the plurality of crushing shafts 111, each group of third crushing blades 112 is provided with two groups, the two groups of third crushing blades 112 are respectively in bilateral symmetry about the central axis 9 of the herringbone heat insulation board, the plurality of third crushing blades 112 are arranged on the circumferential surface of the crushing shaft 111, and efficient crushing can be realized through the functions of the crushing shaft 111 and the third crushing blades 112;

the second driving mechanism 6 is arranged at the front end part of the box body 1, the second driving mechanism 6 is further connected with the first crushing mechanism 11 to realize the rotation of the first crushing mechanism 11, the second driving mechanism 6 comprises a second motor 61, a second driving wheel 62, a second driven wheel 63, a second transmission belt 64, a connecting shaft 65, transmission gears 66 and transmission racks 67, the second motor 61 is fixedly arranged at the front end part of the box body 1, the second driving wheel 62 is fixedly arranged at the output end of the second motor 61, the transmission gears 66 are provided in plurality, the transmission gears 66 are respectively and fixedly arranged at the front end parts of the crushing shafts 111, the connecting shaft 65 is fixedly arranged at the front end part of one transmission gear 66, the second driven wheel 63 is fixedly arranged at the front end part of the connecting shaft 65, the second transmission belt 64 is arranged between the second driving wheel 62 and the second driven wheel 63, the transmission racks 67 are arranged among the transmission gears 66, the output end of the second motor 61 rotates to drive the second driving wheel 62 to rotate, the second driving wheel 62 rotates to drive the second driven wheel 63 to rotate through the second transmission belt 64, the second driven wheel 63 rotates to drive the connecting shaft 65 to rotate, so as to drive one of the transmission gears 66 to rotate, and the plurality of crushing shafts 111 rotate together through the transmission action between the transmission rack 67 and the plurality of transmission gears 66, so as to respectively drive the plurality of groups of third crushing blades 112 to rotate;

the second crushing mechanism 12 is arranged in the box body 1, the second crushing mechanism 12 is located in a second crushing chamber, the second crushing mechanism 12 comprises a third motor 121 and fourth crushing blades 122, the third motor 121 is fixedly arranged at the center of the bottom of the box body 1, the output end of the third motor 121 penetrates through the box body 1 and extends into the box body, a plurality of groups of the fourth crushing blades 122 are arranged, the plurality of groups of the fourth crushing blades 122 are fixedly arranged on the circumferential surface of the output end of the third motor 121, and the output end of the third motor 121 rotates to drive the plurality of groups of the fourth crushing blades 122 to rotate, so that rubber after being primarily crushed is efficiently crushed, and the rubber is completely changed into rubber powder;

the heaters 8 are respectively arranged on the front inner wall and the rear inner wall of the box body 1, the heaters 8 are positioned in the first cavity, and the heaters 8 have good heating effect, so that most of heat is concentrated in the first crushing cavity, the moisture in the rubber is conveniently dried, the weight of the rubber is reduced, and the rubber is easier to float;

a group of inclined helium holes 7 are respectively formed in the front end part and the rear end part of the box body 1, a plurality of inclined helium holes 7 are formed in each group, the inclined helium holes 7 are transversely arranged at equal intervals, the inclined helium holes 7 are located in the first crushing chamber area, and the inclined helium holes 7 are used for helium gas to blow in;

a set of helium supply mechanisms 15 respectively arranged at the front and rear sides of the box body 1, each set of helium supply mechanisms 15 respectively connected with each set of inclined helium vents 7 to realize inclined helium blowing into the first crushing chamber, each set of helium supply mechanisms 15 respectively comprises a helium tank 151, an air pump 152, a first air pipe 153, a second air pipe 154, a third air pipe 155 and a fourth air pipe 156, the helium tank 151 is connected with the air pump 152 through the first air pipe 153, the second air pipe 154 is arranged at an air outlet of the air pump 152, the third air pipe 155 is connected with the other end of the second air pipe 154, two ends of the third air pipe 155 are sealed, the fourth air pipes 156 are provided with a plurality of fourth air pipes 156, the fourth air pipes 156 are all connected with the third air pipe 155, the other ends of the fourth air pipes 156 are respectively arranged at outer vents of the plurality of inclined helium vents 7 and fixedly connected with the box body 1, the helium in the helium tank 151 is pumped out through the action of the air pump 152 and is conveyed through the second air pipes 154 and the third air, the gas is respectively conveyed into a plurality of fourth gas pipes 156, and finally obliquely blown into the box body 1 through two groups of oblique helium holes 7 to discharge most of air, so that a large amount of helium is filled in the box body 1;

the cooling water pipe 13 is fixedly arranged at the bottom of the box body 1, the water-cooling supply mechanism 14 is arranged at the front side of the box body 1, the water-cooling supply mechanism 14 is respectively connected with two ports of the cooling water pipe 13 to realize high-efficiency water cooling, the water-cooling supply mechanism 14 comprises a cooling box 141, a water pump 142, a first water pipe 143, a second water pipe 144 and a third water pipe 145, the cooling box 141 and the water pump 142 are both arranged at the front side of the box body 1, the water pump 142 is connected with the cooling box 141 through the first water pipe 143, a water outlet of the water pump 142 is connected with one port of the cooling water pipe 13 through the second water pipe 144, the third water pipe 145 is connected with the other port of the cooling water pipe 13, the other end of the third water pipe 145 is inserted into the cooling box 141, cooling water and ice blocks are filled in the cooling box 141, the water pump 142 pumps out the cooling water in the cooling box 141 through the first water pipe, the water is returned to the cooling tank 141 through a third water pipe 145 to form circulation, and good cooling is performed;

preferably, in order to prevent the crushed rubber from easily entering the inclined helium holes 7, the invention further comprises a group of filter screens fixedly arranged on the front inner wall and the rear inner wall of the box body 1 respectively, each group of filter screens is provided with a plurality of filter screens, the plurality of filter screens are transversely arranged at equal intervals, and the plurality of filter screens are positioned at the inner hole openings of the inclined helium holes 7 respectively and have good blocking effect.

A waste tire crushing method comprises the following steps:

s1, heating: the two groups of heaters 8 are started to heat the two groups of heaters, so that most of heat is concentrated in the first crushing chamber;

s2, air discharge: firstly, starting the two air pumps 152, pumping out helium gas in the helium tank 151 under the action of the air pumps 152, respectively conveying the helium gas into a plurality of fourth air pipes 156 through the conveying of the second air pipes 154 and the third air pipes 155, and finally obliquely blowing the helium gas into the box body 1 through two groups of oblique helium gas holes 7 respectively to discharge most of air so that a large amount of helium gas is filled in the box body 1;

s3, crushing: rubber of waste tires is placed into the box body 1 through the feeding hole 2, the first motor 51, the second motor 61, the third motor 121 and the water pump 142 are started, the output end of the first motor 51 rotates to drive the first driving wheel 52 to rotate, the first driving wheel 52 rotates to drive the first driven wheel 53 to rotate through the first transmission belt 54, the first driven wheel 53 rotates to drive one of the crushing shafts to rotate, thereby rotating the first driving gear 55, and by the meshing action of the first driving gear 55 and the first driven gear 56, so that the two crushing shafts and the crushing roller 41 rotate, the rubber is efficiently crushed under the action of the first crushing gear 42 and the second crushing gear 46 or the action of the plurality of second crushing blades 48 and the plurality of first crushing blades 44 or the action of the first regular hexagon crushed pieces 45 and the two second regular hexagon crushed pieces 49, and the crushed rubber falls downwards;

s4, primary crushing: the output end of the second motor 61 rotates to drive the second driving wheel 62 to rotate, the second driving wheel 62 rotates to drive the second driven wheel 63 to rotate through the second transmission belt 64, the second driven wheel 63 rotates to drive the connecting shaft 65 to rotate, thereby driving one of the transmission gears 66 to rotate, the plurality of crushing shafts 111 rotate together through the transmission action between the transmission rack 67 and the plurality of transmission gears 66, thereby respectively enabling the plurality of groups of third crushing blades 112 to rotate, the fallen rubber is primarily crushed by the plurality of groups of third crushing blades 112 and falls onto the herringbone heat insulation board 9, the rubber with the width smaller than the aperture of the discharge hole 10 falls downwards, the rubber with the width larger than the aperture of the discharge hole 10 blows upwards under the action of helium gas, floats in the air, thereby being not accumulated and performing efficient crushing, meanwhile, due to the action of the two groups of heaters 8, the rubber is well heated, the moisture contained in the rubber is dried, so that the quality of the rubber is effectively reduced, the rubber is easier to float, the rubber is inflammable in the crushing process due to the heating effect, but the necessary condition of combustion is blocked due to helium which is inert gas, so that the rubber is incombustible, good safety is kept, and the rubber is crushed until the width of the rubber is smaller than the aperture of the discharge hole 10 and falls downwards;

s5, final crushing: the output end of the third motor 121 rotates to drive the plurality of sets of fourth crushing blades 122 to rotate, so that rubber after preliminary crushing is crushed efficiently and is completely changed into rubber powder, air below the herringbone heat insulation plate 9 is not easy to discharge, the rubber powder is flammable and dangerous in the final crushing process, the water pump 142 pumps cooling water in the cooling tank 141 out through the first water pipe 143, the cooling water is conveyed to the cooling water pipe 13 through the second water pipe 144 and returns to the cooling tank 141 through the third water pipe 145 to form circulation, ice blocks are added in the irregular phase cooling tank 141 in the cooling process to ensure the cooling temperature, the cooling water pipe 13 well cools the bottom of the tank body 1 and transfers cold energy into the second crushing chamber, and the herringbone heat insulation plate 9 has good heat insulation performance, so that heat in the first crushing chamber is not easy to enter the second crushing chamber, the cold energy in the second crushing cavity is enabled to be difficult to enter the first crushing cavity, so that good cooling is carried out, the situation of spontaneous combustion cannot occur in the crushing process, the time for cooling the subsequent rubber powder can be shortened, and finally the crushed rubber powder is discharged from the discharge hole.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the equivalent replacement or change according to the technical solution and the modified concept of the present invention should be covered by the scope of the present invention.

Claims

1. The utility model provides a junked tire breaker, is provided with feed inlet (2) including the top, bottom four corners department all is provided with supporting legs (3) and back tip is provided with box (1) of discharge gate, its characterized in that still includes:

the crushing mechanism (4) is arranged in the feed port (2);

the first driving mechanism (5) is arranged at the front end part of the box body (1), and the first driving mechanism (5) is also connected with the crushing mechanism (4) to realize the rotation of the crushing mechanism (4);

the crushing device comprises a herringbone heat insulation plate (9) arranged between the front inner wall and the rear inner wall of a box body (1) and a plurality of groups of discharge holes (10) formed in the top of the herringbone heat insulation plate (9), wherein a first crushing chamber is formed between the herringbone heat insulation plate (9) and a feed inlet (2), and a second crushing chamber is formed between the herringbone heat insulation plate (9) and the lower inner wall of the box body (1);

the first crushing mechanism (11) is arranged in the box body (1), and the first crushing mechanism (11) is positioned in the first crushing chamber;

the second driving mechanism (6) is arranged at the front end part of the box body (1), and the second driving mechanism (6) is also connected with the first crushing mechanism (11) to realize the rotation of the first crushing mechanism (11);

the second crushing mechanism (12) is arranged in the box body (1), and the second crushing mechanism (12) is positioned in the second crushing chamber;

a group of heaters (8) respectively arranged on the front inner wall and the rear inner wall of the box body (1), wherein the heaters (8) are positioned in the first chamber;

the device comprises a box body (1), a plurality of inclined helium holes (7) and a plurality of gas inlets (7), wherein the inclined helium holes (7) are respectively formed in the front end part and the rear end part of the box body (1), the inclined helium holes (7) are transversely arranged at equal intervals, and the inclined helium holes (7) are positioned in a first crushing chamber area;

the helium supply mechanisms (15) are respectively arranged on the front side and the rear side of the box body (1), and each group of helium supply mechanisms (15) is respectively connected with each group of inclined helium air holes (7) so as to obliquely blow helium into the first crushing chamber;

a cooling water pipe (13) arranged at the bottom of the box body (1);

the water cooling device comprises a water cooling supply mechanism (14) arranged on the front side of the box body (1), wherein the water cooling supply mechanism (14) is respectively connected with two ports of a cooling water pipe (13) to realize efficient water cooling.

2. The junked tire crushing device according to claim 1, wherein each set of the helium gas supply means (15) comprises a helium gas tank (151), an air pump (152), a first gas pipe (153), a second gas pipe (154), a third gas pipe (155) and a fourth gas pipe (156), the helium tank (151) is connected with the air pump (152) through a first air pipe (153), the second air pipe (154) is arranged at the air outlet of the air pump (152), the third air pipe (155) is connected with the other end of the second air pipe (154), the two ends of the third air pipe (155) are closed, a plurality of fourth air pipes (156) are arranged, the fourth air pipes (156) are all connected with the third air pipe (155), and the other ends of the plurality of fourth gas pipes (156) are respectively arranged at the outer orifices of the plurality of inclined helium holes (7) and are fixedly connected with the box body (1).

3. The junked tire crushing device according to claim 2, wherein the crushing mechanism (4) comprises a first crushing mechanism and a second crushing mechanism, the first crushing mechanism and the first crushing mechanism each comprise a crushing shaft and a crushing roller (41), the crushing roller (41) is rotatably matched with the inner wall of the box body (1) through the crushing shafts, the other ends of the two crushing shafts respectively penetrate through the box body (1) and extend to the front side of the box body, and the penetrating parts of the crushing shafts and the box body (1) are rotatably matched through bearings;

the first crushing mechanism also comprises a plurality of groups of first crushing gears (42), a plurality of groups of first crushing discs (43), a plurality of groups of first crushing blades (44) and a plurality of groups of first regular hexagon crushing blocks (45), wherein each group of first crushing gears (42) is provided with one crushing gear, and first crushing gears (42) are provided on the circumferential surface of the crushing roller (41), two of each set of the first crushing disks (43), and a first crushing disk (43) is provided on the circumferential surface of the crushing roller (41), each set of the first crushing blades (44) is provided in plurality, and a plurality of first crushing blades (44) are arranged on the circumferential surface of the first crushing disc (43) in an annular array, one crushing block (45) of each group is arranged, and the first regular hexagonal crushed pieces (45) are arranged on the circumferential surface of the crushing roller (41);

the second crushing mechanism further comprises a plurality of groups of second crushing gears (46), a plurality of groups of second crushing disks (47), a plurality of groups of second crushing blades (48) and a plurality of groups of second regular-hexagon crushing blocks (49), wherein each group of second crushing gears (46) is provided with one, the second crushing gears (46) are arranged on the circumferential surface of the crushing roller (41), each group of second crushing disks (47) is provided with one, the second crushing disks (47) are arranged on the circumferential surface of the crushing roller (41), the second crushing disks (47) and the two first crushing disks (43) are staggered with each other, a plurality of second crushing blades (48) are arranged on the circumferential surface of the second crushing disks (47) in an annular array, and the directions of the second crushing blades (48) and the first crushing blades (44) are opposite, two second regular hexagon broken pieces (49) are arranged in each group, the second regular hexagon broken pieces (49) are arranged on the circumferential surface of the crushing roller (41), and the two second regular hexagon broken pieces (49) and the first regular hexagon broken pieces (45) are staggered.

4. A junked tire crushing device according to claim 3, wherein the first driving mechanism (5) comprises a first motor (51), a first driving wheel (52), a first driven wheel (53), a first driving belt (54), a first driving gear (55) and a first driven gear (56), the first motor (51) is arranged on the front surface of the box body (1), the first driving wheel (52) is arranged at the output end of the first motor (51), the first driven wheel (53) is arranged at the front end of one crushing shaft, the first driving belt (54) is arranged between the first driving wheel (52) and the first driven wheel (53), the first driving gear (55) and the first driven gear (56) are respectively arranged on the circumferential surfaces of the two crushing shafts, the first driving gear (55) and the first driven gear (56) are engaged with each other to realize transmission, and the first driving gear (55) and the first driven gear (56) are not in contact with the case (1).

5. The junked tire crushing device according to claim 4, wherein the first crushing mechanism (11) comprises a plurality of crushing shafts (111) and a plurality of third crushing blades (112), the crushing shafts (111) are arranged in plurality, the crushing shafts (111) are arranged between the front inner wall and the rear inner wall of the box body (1) in an equidistance rotating manner from front to back, the crushing shafts (111) are not contacted with the top of the herringbone heat insulation plate (9), the front end parts of the crushing shafts (111) penetrate through the box body (1) and extend to the front side of the box body, the penetrating parts of the crushing shafts (111) and the box body (1) are in rotating fit through bearings, the third crushing blades (112) are provided with a plurality of groups, the groups of third crushing blades (112) are respectively arranged on the circumferential surfaces of the crushing shafts (111), each group of the third crushing blades (112) is provided with two subgroups, the two small groups of third crushing blades (112) are respectively symmetrical left and right about the central axis of the herringbone heat insulation plate (9), a plurality of third crushing blades (112) are arranged in each small group, and the plurality of third crushing blades (112) are arranged on the circumferential surface of the crushing shaft (111).

6. The junked tire crushing device according to claim 5, wherein the second driving mechanism (6) comprises a second motor (61), a second driving wheel (62), a second driven wheel (63), a second transmission belt (64), a connecting shaft (65), a transmission gear (66) and a transmission rack (67), the second motor (61) is arranged at the front end of the box body (1), the second driving wheel (62) is arranged at the output end of the second motor (61), the transmission gears (66) are provided in plurality, the transmission gears (66) are respectively arranged at the front end parts of the plurality of crushing shafts (111), the connecting shaft (65) is arranged at the front end part of one of the transmission gears (66), the second driven wheel (63) is arranged at the front end part of the connecting shaft (65), and the second transmission belt (64) is arranged between the second driving wheel (62) and the second driven wheel (63), the transmission rack (67) is arranged among the plurality of transmission gears (66) in a transmission way.

7. A scrap tire breaking apparatus according to claim 6, wherein the second breaking mechanism (12) comprises a third motor (121) and a fourth breaking blade (122), the third motor (121) is disposed at the center of the bottom of the box body (1), the output end of the third motor (121) penetrates through the box body (1) and extends to the inside thereof, the fourth breaking blade (122) is provided with a plurality of sets, and the plurality of sets of fourth breaking blades (122) are disposed on the circumferential surface of the output end of the third motor (121).

8. The junked tire crushing device according to claim 7, wherein the water cooling supply mechanism (14) comprises a cooling tank (141), a water pump (142), a first water pipe (143), a second water pipe (144) and a third water pipe (145), the cooling tank (141) and the water pump (142) are both arranged on the front side of the box body (1), the water pump (142) is connected with the cooling tank (141) through the first water pipe (143), a water outlet of the water pump (142) is connected with one port of the cooling water pipe (13) through the second water pipe (144), the third water pipe (145) is connected with the other port of the cooling water pipe (13), the other end of the third water pipe (145) is inserted into the cooling tank (141), and the cooling tank (141) is filled with cooling water and ice blocks.

9. The junked tire crushing device according to claim 8, further comprising a plurality of filter screens respectively arranged on the front and rear inner walls of the box body (1), wherein a plurality of filter screens are transversely arranged at equal intervals, and are respectively positioned at the inner hole openings of the inclined helium air holes (7).

10. The scrap tire crushing apparatus according to claim 9, wherein the crushing method comprises the steps of:

s1, heating: starting two groups of heaters (8) to heat the heaters so that most of heat is concentrated in the first crushing chamber;

s2, air discharge: firstly, starting two air pumps (152), pumping helium in a helium tank (151) under the action of the air pumps (152), respectively conveying the helium into a plurality of fourth air pipes (156) through the conveying of a second air pipe (154) and a third air pipe (155), and finally obliquely blowing the helium into a box body (1) through two groups of oblique helium holes (7) to discharge most of air so that a large amount of helium is filled in the box body (1);

s3, crushing: rubber of waste tires is placed into a box body (1) through a feeding hole (2), a first motor (51), a second motor (61), a third motor (121) and a water pump (142) are started, the output end of the first motor (51) rotates to drive a first driving wheel (52) to rotate, the first driving wheel (52) rotates to drive a first driven wheel (53) to rotate through a first transmission belt (54), the first driven wheel (53) rotates to drive one of crushing shafts to rotate, so that the first driving gear (55) rotates, two crushing shafts and crushing rollers (41) are driven to rotate through the meshing action of the first driving gear (55) and a first driven gear (56), the rubber is under the action of a first crushing gear (42) and a second crushing gear (46) or the action of a plurality of second crushing blades (48) and a plurality of first crushing blades (44) or the action of a first regular hexagon crushing fragment (45) and two second regular hexagon fragments (49), efficient crushing is carried out, and the crushed rubber falls downwards;

s4, primary crushing: the output end of a second motor (61) rotates to drive a second driving wheel (62) to rotate, the second driving wheel (62) rotates to drive a second driven wheel (63) to rotate through a second transmission belt (64), the second driven wheel (63) rotates to drive a connecting shaft (65) to rotate, so as to drive one of transmission gears (66) to rotate, a plurality of crushing shafts (111) rotate together through the transmission action between a transmission rack (67) and a plurality of transmission gears (66), so as to respectively drive a plurality of groups of third crushing blades (112) to rotate, fallen rubber is primarily crushed through the plurality of groups of third crushing blades (112) and falls onto a herringbone heat insulation plate (9), the rubber with the width smaller than the aperture of the discharge hole (10) falls downwards, the rubber with the width larger than the aperture of the discharge hole (10) blows upwards under the action of helium gas and floats in the air, so as not to be accumulated, the rubber is efficiently crushed, meanwhile, due to the action of the two groups of heaters (8), the rubber is well heated, moisture contained in the rubber is dried, the mass of the rubber is effectively reduced, the rubber is easier to float, the rubber is inflammable in the crushing process due to the heating action, but the helium gas is inert gas, so that the necessary condition of combustion is blocked, the rubber is nonflammable, good safety is kept, and the rubber is crushed until the width of the rubber is smaller than the aperture of the discharge hole (10) and falls downwards;

s5, final crushing: the output end of the third motor (121) rotates to drive a plurality of groups of fourth crushing blades (122) to rotate, so that rubber after primary crushing is crushed efficiently and is completely changed into rubber powder, air on the lower side of the herringbone heat insulation plate (9) is not easy to discharge, the rubber powder is combustible and dangerous in the final crushing process, a water pump (142) pumps cooling water in a cooling tank (141) out through a first water pipe (143), the cooling water is conveyed to a cooling water pipe (13) through a second water pipe (144), the cooling water returns to the cooling tank (141) through a third water pipe (145) to form circulation, the cooling water is added into the irregular phase cooling tank (141) in the cooling process to ensure the cooling temperature, the cooling water pipe (13) well cools the bottom of the tank body (1) and transfers cold into a second crushing cavity, and the herringbone heat insulation plate (9) has good ice blocks, make the heat in the first crushing cavity difficult to get into the crushing cavity of second for the cold volume in the crushing cavity of second is difficult to get into first crushing cavity, thereby carries out good cooling, not only can make the condition of spontaneous combustion can not appear among the crushing process, also can reduce follow-up rubber powder refrigerated time, and the rubber powder that will smash at last is discharged through the discharge gate.