CN211616328U

CN211616328U - Leftover material recovery device in recovery rubber desulfurization, mixing and calendering production line

Info

Publication number: CN211616328U
Application number: CN201922405814.4U
Authority: CN
Inventors: 陈宁; 唐磊; 李惠平; 葛志军; 郭苏
Original assignee: Muyang Lefu Rubber Industry Co ltd
Current assignee: Muyang Lefu Rubber Industry Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-10-02
Anticipated expiration: 2029-12-27

Abstract

The utility model discloses a retrieve rubber desulfurization, it is mixing, leftover bits recovery unit in the calendering production line, leftover bits conveyer is including the first conveying case of leftover bits that connects gradually, leftover bits second conveying case, leftover bits third conveying case and leftover bits fourth conveying case, leftover bits second conveying case initiating terminal is equipped with air inlet A, air inlet A establishes gas vent B intercommunication through leftover bits second conveying case and leftover bits third conveying roof portion, leftover bits third conveying case end is equipped with air inlet B, air inlet B establishes gas vent D intercommunication through third conveying case and third conveying case initiating terminal, gas vent B and gas vent D all communicate with exhaust treatment device through draught fan C, be equipped with electric heater unit in the leftover bits fourth conveying case. According to the structure, the utility model discloses a leftover bits recovery unit in recovery rubber desulfurization, mixing, the calendering production line realizes full automatization's recovery and glues desulfurization, cooling, mixing, calendering molding, make full use of waste gas and leftover bits, reduction in production cost.

Description

Leftover material recovery device in recovery rubber desulfurization, mixing and calendering production line

Technical Field

The utility model relates to a retrieve the technical field of rubber production line, concretely relates to retrieve leftover bits recovery unit in rubber desulfurization, mixing, the calendering production line.

Background

The recycling of the waste rubber in China mainly adopts a chemical desulfurization process technology to produce reclaimed rubber, which accounts for more than 90 percent of the recycled waste rubber, the chemical desulfurization process is of a sectional gap type, and particularly, the desulfurized rubber powder discharged from a desulfurizing tank is subjected to unsealed cooling and 2-3 open-mill flaking processes, so that serious secondary pollution is generated in the production process, and the production environment is poor. At present, the domestic cooling of the desulfurized rubber powder is in an open type, and because the discharged desulfurized rubber powder has high temperature which is generally more than 200 ℃, the desulfurized rubber powder is easy to oxidize by the open type cooling, even open fire is generated, and the performance of reclaimed rubber is influenced; the reclaimed rubber sheet preparation adopts an open mill rubber mixing and sheet production process, on one hand, secondary pollution exists, and on the other hand, hidden safety problems exist for operators, so that the key process technology for solving the problems of oxygen isolation cooling of the desulfurized rubber powder and green reclaimed rubber sheet preparation is green recycling of the waste rubber.

There are also some processes for producing reclaimed rubber after devulcanizing, cooling and mixing of reclaimed rubber (such as the technical scheme described in the publication No. CN 102344592B) on the market at present, but the energy consumption in the production process is relatively high, and although the reclaimed rubber is utilized, the profit of enterprises is not high, and even some enterprises must rely on local government to make a subsidy on the reclaimed rubber to maintain production. Therefore, the equipment in the processes of desulfurization, mixing, calendering and the like of the recycled rubber needs to be optimized, so that the production cost and the production energy consumption are reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the device overcomes the defects of the prior art, provides a leftover material recovery device in the production line of desulfurization, mixing and calendering of recovered rubber, realizes full-automatic desulfurization, cooling, mixing and calendering of the recovered rubber, and can fully utilize waste gas and leftover materials, thereby reducing the production cost and saving the energy consumption; the desulfurized rubber powder can be fully and quickly cooled through the action of the cooling cylinder and the cooling tank, and the cooling cost is relatively low; in the process of conveying the leftover materials back to the calendering device, the leftover materials can be relatively closed, heat preservation conveying is carried out, the phenomenon that the leftover materials are polluted or cooled to increase production cost is avoided, and even the leftover materials cannot be recycled; in the process of conveying the leftover materials back to the calendering device, the heat of the waste gas is fully utilized, so that the production cost is saved, the energy consumption is reduced, and the utilization rate of the waste gas is improved; the in-process of calendering device is returned in leftover bits conveying, along with passing back the continuation of process, through the frequency to corresponding conveyer belt vibration operation higher and higher to guarantee that leftover bits can not take place the adhesion with the conveyer belt in whole data send process, guaranteed the recovery efficiency of leftover bits.

The technical scheme adopted by the utility model is as follows:

the leftover material recovery device in the production line for desulfurizing, mixing and calendering the recovered rubber comprises a desulfurizing tank, a cooling cylinder, a cooling tank, a rubber powder storage bin, a mixing mill, a calender, a forming machine and a discharged material cooling and conveying device which are sequentially connected, wherein the desulfurizing tank is connected with the cooling cylinder through a conveying device A, the cooling cylinder is connected with the cooling tank through a conveying device B, the cooling tank is connected with the rubber powder storage bin through a conveying device C, the bottom of the rubber powder storage bin is connected with the mixing mill through a conveying device D, the mixing mill is connected with the calender through a conveying device E, a discharge port of the forming machine is connected with the discharged material cooling and conveying device through a conveying device F, one side of the discharge port of the forming machine, which faces away from the discharged material cooling and conveying device, is connected with the conveying device E through a leftover material conveying device, and the leftover material conveying device comprises a first conveying box for leftover materials which are, Leftover bits second transfer case, leftover bits third transfer case and leftover bits fourth transfer case, the initiating terminal of leftover bits second transfer case is equipped with the air inlet A that all communicates through draught fan A and the cooling gas vent A that ejection of compact cooling conveyer top was established and the cooling gas vent B that cooling tank top was established, air inlet A communicates through the gas vent B that leftover bits second transfer case and leftover bits third transfer case top were established, the end of leftover bits third transfer case is equipped with the air inlet B that communicates through draught fan B and the gas vent C that the cooling cylinder top was established, air inlet B communicates through the gas vent D that third transfer case and third transfer case initiating were established, gas vent B and gas vent D all communicate through draught fan C and exhaust treatment device, be equipped with electric heater unit in the leftover bits fourth transfer case.

The utility model discloses a further improvement is, the cooling cylinder includes the barrel around the axle center pivoted round platform cambered surface structure of cooling cylinder in the cooling cylinder, the internal diameter of barrel feed end is less than the internal diameter of barrel discharge end, the inner wall evenly distributed of barrel has a plurality of diaphragms of beating, be fixed with the driving motor A of barrel on the cooling cylinder, the upper portion of cooling cylinder conveyer A one end dorsad is equipped with the striker plate, the lower border of striker plate is located between the axle center of barrel and the bottom border of barrel discharge end, the feed end of cooling cylinder inwards is equipped with the guide turn-ups, the turn-ups's of guide border is located the feed end of barrel, gas vent C locate the cooling cylinder top, be located feed end one side and have with the inside intercommunication of cooling cylinder.

The utility model discloses a further improvement scheme is, it has multirow, every row of material beating diaphragm to be on a parallel with the axle center distribution of barrel to beat the material diaphragm and use the axle center of barrel as central evenly distributed.

The utility model discloses a further improvement scheme is, two rows of adjacent ramming material diaphragms distribute each other crisscross.

The utility model discloses further improve the scheme and be, the inner wall of beating material diaphragm vertical fixation in barrel to the beating material diaphragm is equipped with the hem towards one side border in barrel axle center, the direction of buckling of hem is the same with the rotation direction of barrel.

The utility model discloses a further improvement is, the striker plate is equipped with the protective gas shower nozzle towards a side end face of barrel, the axle center department that is located the barrel, protective gas shower nozzle and protective gas intake pipe intercommunication, protective gas shower nozzle spun protective gas is removed to the feed end of barrel by the discharge end of barrel under draught fan B's effect to get into between barrel and the cooling cylinder, get into gas vent C at last from the gap between the feed end of barrel and the turn-ups.

The utility model discloses a further improvement is, rotate with the axle center through the gyro wheel between barrel and the cooling cylinder and be connected, the gyro wheel uses the axle center of barrel to be center evenly distributed between barrel and cooling cylinder, the barrel outer wall is corresponding to gyro wheel position department and the cooling cylinder inner wall all is equipped with the annular boss that matches with the wheel rim of gyro wheel corresponding to gyro wheel position department.

The utility model discloses a further improvement is, the lateral wall of barrel is fixed with the ring gear, the lower part both sides of cooling cylinder inner wall, correspond to ring gear position department and rotate and be connected with the gear that matches the meshing, driving motor A's output shaft is fixed with drive gear, drive gear passes behind the transmission through-hole that the cooling cylinder established with the ring gear meshing transmission.

The utility model discloses a further improvement scheme is, the bottom of a cooling cylinder is fixed with the supporting leg.

The utility model discloses a further improvement scheme is, the cooling tank includes the vertical scroll of axle center department in the cooling tank, the lateral wall that the vertical scroll is located the cooling tank internal portion is fixed with helical blade, the axle center department at cooling tank top is fixed with driving motor B, the vertical scroll upwards passes the roof of cooling tank and driving motor B's output shaft with the axle center in proper order, and the vertical scroll is fixed with the axle center with driving motor B's output shaft, the vertical scroll is the hollow shaft, helical blade's border is equipped with the gas pocket that communicates with the cavity in the vertical scroll, the gas pocket is evenly distributed along helical blade, the top of vertical scroll and the air feeder of cooling gas communicate; one side that cooling tank top is located driving motor B dorsad cooling gas vent B is equipped with the feed-in through-hole of being connected with conveyer B, the tank bottoms of cooling tank is equipped with the discharging pipe.

The utility model discloses a further improvement is, the bottom of vertical scroll is equipped with the toper pointed end, be equipped with a plurality ofly on the pointed end conical surface of toper and the gas pocket of the cavity intercommunication in the vertical scroll, gas pocket evenly distributed is in the conical surface.

The utility model discloses a further improvement scheme is, the discharging pipe is located the axle center department of the tank bottoms of cooling tank, and the tank bottoms inner wall of cooling tank is along outside-in direction, the domatic of downward sloping.

The utility model has the further improvement scheme that the tail end of the first leftover material conveying box is communicated with a conveying through hole A arranged on the side wall of the second leftover material conveying box at the starting end; the tail end of the second leftover material conveying box is communicated with a conveying through hole B formed in the side wall of the third leftover material conveying box at the starting end; the tail end of the leftover material third conveying box is communicated with a conveying through hole C formed in the side wall of the leftover material fourth conveying box at the starting end.

The utility model discloses a further improvement is, the first transfer incasement of leftover bits is fixed with conveying frame A, be equipped with conveyer belt A on the conveying frame A, conveying frame A's top stretches out behind the first transfer incasement of leftover bits and is connected with the discharge gate of make-up machine, conveying frame A's end is passed conveying through-hole A and is got into in the leftover bits second transfer incasement.

The utility model discloses a further improvement is, leftover bits second conveying incasement is fixed with conveying frame B, be equipped with conveyer belt B on the conveying frame B, conveying frame B's top is located the below of the conveying frame A that stretches into leftover bits second conveying incasement to conveying frame A is located conveying frame B's within range, conveying frame B's end is passed conveying through-hole B and is got into leftover bits third conveying incasement.

The utility model discloses a further improvement is, leftover bits third conveying incasement is fixed with conveying frame C, be equipped with conveyer belt C on the conveying frame C, conveying frame C's top is located the below of the conveying frame B that stretches into leftover bits third conveying incasement to conveying frame B is located conveying frame C's within range, conveying frame C's end is passed conveying through-hole C and is got into leftover bits fourth conveying incasement.

The utility model discloses a further improvement is, leftover bits fourth conveying incasement is fixed with conveying frame D, be equipped with conveyer belt D on the conveying frame D, conveying frame D's top is located the below of the conveying frame C that stretches into leftover bits fourth conveying incasement to conveying frame C is located conveying frame D's within range, conveying frame D's end is connected with conveyer E after stretching out leftover bits fourth conveying case.

The utility model discloses further improve the scheme and be, it is protruding to be equipped with arrow point shape on conveyer belt A's the surface, on conveyer belt B's the surface, on conveyer belt C's the surface and on conveyer belt D's the surface respectively, the bellied direction of arrow point shape is the same with direction of transfer.

The utility model discloses a further improvement is, conveying frame B keeps away from one side of conveying frame A, is fixed with baffle A corresponding to conveying frame A's end, conveying frame C keeps away from one side of conveying frame B, is fixed with baffle B corresponding to conveying frame B's end, conveying frame D keeps away from one side of conveying frame C, is fixed with baffle C corresponding to conveying frame C's end.

The utility model discloses a further improvement is, conveyer belt A's both sides, conveyer belt B's both sides, conveyer belt C's both sides and conveyer belt D's both sides are passed through the bearing roller respectively and are connected with the conveying frame A that corresponds, conveying frame B, conveying frame C and conveying frame D rotation, bearing roller roll axle center is along by outside to inboard direction, downward sloping, the bearing roller passes through the roller frame and is connected respectively with conveying frame A, conveying frame B, conveying frame C and conveying frame D.

The utility model discloses further improve the scheme and be, be fixed with the piston on conveying frame A, conveying frame B, conveying frame C and the conveying frame D, reciprocating motion is made along the horizontal direction that the perpendicular to corresponds the conveying frame to the piston rod of piston.

The utility model discloses further improve the scheme be, the piston rod tip of piston also is connected with the bearing roller through the roller frame, is equipped with one or more bearing roller between two adjacent pistons.

The utility model discloses further improve the scheme and be, piston on the conveying frame A uses conveyer belt A's center to locate on the conveying frame A as symmetry axis, symmetry.

The utility model discloses further improve the scheme and be, along conveyer belt A's direction of delivery on, the piston rod end connection of first bearing roller and piston.

The utility model discloses further improve the scheme and be equipped with two bearing rollers between two adjacent pistons.

The utility model discloses further improve the scheme and be, along conveyer belt B's direction of transfer, the piston that is located on the conveying frame B of baffle A place side is adjacent with the piston that is located the opposite side on conveying frame B, and the piston that is located baffle A place side is located the place ahead, is equipped with two bearing rollers between the adjacent piston on the conveying frame B with one side, and the first bearing roller that is located baffle A rear side passes through the piston and is connected with conveying frame B.

The utility model discloses a further improvement is, the both sides inner wall and the top inner wall of leftover bits second conveying case are fixed with the heating pipe A of intercommunication respectively, heating pipe A and air inlet A intercommunication, heating pipe A evenly is equipped with the gas pocket towards one side of conveying frame B, gas vent B is located the top of leftover bits third conveying case, stretches into leftover bits third conveying case position department corresponding to conveyer belt B.

The utility model discloses further improve the scheme and be, along conveyer belt C's direction of transfer, the piston that is located on the conveying frame C of baffle B place side is adjacent with the piston that is located the opposite side on the conveying frame C, and the piston that is located baffle B place side is located the place ahead, is equipped with a bearing roller between the adjacent piston on the conveying frame C with one side, and the first bearing roller that is located baffle B rear side passes through the piston and is connected with conveying frame C.

The utility model discloses further improve the scheme and be, along conveyer belt C's direction of transfer, on the transport frame C, be located the piston and be located and be equipped with the shaking roller between the adjacent bearing roller of its front side.

The utility model discloses a further improvement is, the lateral wall middle part of trembling the roller is equipped with the annular groove, conveyer belt C's border and annular groove contact, on the conveying frame C, be located one side rotation that tremble roller conveyer belt C dorsad and be connected with the cam roller, the lateral wall contact of cam roller and tremble roller, the axostylus axostyle A of cam roller passes downwards behind the conveying frame C with be fixed in conveying frame C's driving motor C's output shaft fixed, tremble the axostylus axostyle B of roller and be connected with the bar through-hole that conveying frame C was established, the length of bar through-hole is greater than the sum of axostylus axostyle B's diameter and the maximum offset of cam roller, in the bar through-hole, fill between pore wall and the axostylus axostyle B towards conveyer belt C one side and be.

The utility model discloses further improve the scheme and be, be equipped with spacing bulge loop on axostylus axostyle B, the threaded fixation is passed through to axostylus axostyle B's bottom has the spacing flange, spacing bulge loop and conveying frame C's top surface contact spacing flange and conveying frame C's bottom contact.

In a further improvement of the utility model, a buffer ring is rotatably connected in the annular groove through an annular sleeve, and the outer diameter of the buffer ring is smaller than that of the shaking roller; and the middle part of the outer side wall of the buffer ring is provided with an annular cambered groove.

The utility model discloses further improve the scheme and be, leftover bits third transport case, the next door that is located conveyer belt C's upper and lower floor are equipped with heating pipe B, heating pipe B communicates respectively with air inlet B and the gas vent D that leftover bits third transport case top lateral wall established that leftover bits third transport case and fourth transport case junction lateral wall were established.

The utility model discloses a further improvement scheme is, heating pipe B is through being located the heating branch pipe and the gas vent D intercommunication of conveying frame C both sides.

The utility model discloses a further improvement scheme is, evenly distributed has radiating fin on heating pipe B surface towards conveyer belt C.

The utility model discloses further improve the scheme and be, along conveyer belt D's direction of transfer, the piston that is located on the conveying frame D of baffle C place side is adjacent with the piston that is located the conveying frame D opposite side, and the piston that is located baffle C place side is located the place ahead, is equipped with two bearing rollers between the adjacent piston on the conveying frame D with one side, and the first bearing roller that is located baffle C rear side passes through the piston and is connected with conveying frame D.

The utility model discloses a further improvement is, between the transport frame D, be located conveyer belt D about evenly distributed have a plurality of upper and lower vibrators between two-layer, the vibration source and the conveyer belt D contact of upper and lower vibrator, the bottom of upper and lower vibrator is fixed in between the transport frame D on the fixed connection diaphragm of establishing.

The utility model discloses a further improvement scheme is, electric heater unit locates on the both sides inner wall in the leftover bits fourth transfer box.

The utility model discloses a further improvement is, the first transport case of leftover bits is along its direction of delivery downward sloping, leftover bits second transport case is along its direction of delivery tilt up, leftover bits third transport case is along its direction of delivery downward sloping, leftover bits fourth transport case is along its direction of delivery tilt up.

The utility model discloses a further improvement scheme is, the digester is equipped with a plurality ofly, evenly distributed in proper order along conveyer A's direction of transfer.

The utility model discloses a further improvement is, rubber powder storehouse bottom still communicates and is equipped with conveyer G, conveyer G's direction of transfer is opposite with conveyer D's direction of transfer, conveyer G communicates rubber powder storehouse and rubber powder loading are regional.

The beneficial effects of the utility model reside in that:

first, the utility model discloses a leftover bits recovery unit in recovery rubber desulfurization, mixing, the calendering production line has realized desulfurization, cooling, mixing, the calendering shaping of full automatization recovery rubber to can make full use of waste gas and leftover bits, thereby reduction in production cost practices thrift the energy consumption.

Second, the utility model discloses a leftover bits recovery unit in recovery rubber desulfurization, mixing, the calendering production line through the effect of cooling cylinder and cooling tank for the rubber powder after the desulfurization can be abundant, cool off fast, and the cooling cost is relatively lower moreover.

Third, the utility model discloses a leftover bits recovery unit among recovery rubber desulfurization, mixing, the calendering production line conveys the in-process that returns the calendering device at the leftover bits, makes the leftover bits can seal relatively, keep warm the conveying and avoid the leftover bits to be contaminated or cool off and increase manufacturing cost or even the unable recycle of leftover bits.

Fourth, the utility model discloses a leftover bits recovery unit in recovery rubber desulfurization, mixing, the calendering production line, the in-process of leftover bits conveying back calendering device has make full use of the heat of waste gas to practice thrift manufacturing cost, reduced the energy consumption, improved the utilization ratio of waste gas.

Fifth, the utility model discloses a leftover bits recovery unit in recovery rubber desulfurization, mixing, the calendering production line, the in-process of calendering device is returned in the leftover bits conveying, along with last of passback process, and frequency through to corresponding conveyer belt vibration operation is higher and higher to guarantee that the leftover bits can not take place the adhesion with the conveyer belt in whole data send process, guaranteed the recovery efficiency of leftover bits.

Description of the drawings:

fig. 1 is a schematic top view of the present invention.

FIG. 2 is an enlarged side cross-sectional view of the cooling cartridge.

FIG. 3 is an enlarged side cross-sectional schematic view of the cooling tank.

FIG. 4 is an enlarged top view of the first scrap box and the second scrap box.

FIG. 5 is an enlarged top view of the second scrap conveying box and the third scrap conveying box.

Fig. 6 is a front cross-sectional enlarged schematic view of the scrap at the start position of the third transfer box.

Fig. 7 is a front cross-sectional enlarged schematic view of the scrap at the end position of the third transfer box.

Fig. 8 is an enlarged top view of the third scrap conveying box and the fourth scrap conveying box.

FIG. 9 is an enlarged cross-sectional front view of the vibrator roll of the third transfer box for scrap.

FIG. 10 is an enlarged schematic top cross-sectional view of the end of the fourth transfer box for trim.

Fig. 11 is a right enlarged view of the fourth conveying box for leftover materials.

The specific implementation mode is as follows:

as can be known from the drawings 1 to 11, the leftover material recycling device in the production line for desulfurizing, mixing and calendering recycled rubber of the utility model comprises a desulfurizing tank 1, a cooling cylinder 2, a cooling tank 3, a rubber powder storage bin 4, a mixing roll 5, a calender 6, a forming machine 7 and a discharged material cooling and conveying device 8 which are connected in sequence, wherein the desulfurizing tank 1 is connected with the cooling cylinder 2 through a conveying device A9, the cooling cylinder 2 is connected with the cooling tank 3 through a conveying device B11, the cooling tank 3 is connected with the rubber powder storage bin 4 through a conveying device C13, the bottom of the rubber powder storage bin 4 is connected with the mixing roll 5 through a conveying device D14, the mixing roll 5 is connected with the calender 6 through a conveying device E15, a discharge port of the forming machine 7 is connected with the discharged material cooling and conveying device 8 through a conveying device F16, one side of the discharge port of the forming machine 7, which is back to the discharged material cooling and conveying device 8, is connected with the conveying device E15 through an leftover, the leftover material conveying device comprises a first leftover material conveying box 17, a second leftover material conveying box 18, a third leftover material conveying box 19 and a fourth leftover material conveying box 20 which are sequentially connected, wherein the starting end of the second leftover material conveying box 18 is provided with an air inlet A22 which is communicated with a cooling exhaust port A57 arranged at the top of the discharging cooling conveying device 8 through an induced draft fan A and a cooling exhaust port B12 arranged at the top of the cooling tank 3, the air inlet A22 is communicated with an exhaust port B23 arranged at the top of the third leftover material conveying box 19 through the second leftover material conveying box 18, the tail end of the third leftover material conveying box 19 is provided with an air inlet B24 communicated with an exhaust port C10 arranged at the top of the cooling cylinder 2 through the induced draft fan B, the air inlet B24 is communicated with an exhaust port D25 arranged at the starting end of the third conveying box 19 through the third conveying box 19, the exhaust port B23 and the exhaust port D25 are communicated with an exhaust gas treatment device through the induced draft fan C, an electric heating device 43 is arranged in the leftover material fourth conveying box 20.

The cooling cylinder 2 comprises a cylinder body 57 of a circular truncated cone arc-shaped structure rotating around the axis of the cooling cylinder 2 in the cooling cylinder 2, the inner diameter of the feed end of the cylinder body 57 is smaller than the inner diameter of the discharge end of the cylinder body 57, a plurality of material beating transverse plates 59 are uniformly distributed on the inner wall of the cylinder body 57, a driving motor A58 of the cylinder body 57 is fixed on the cooling cylinder 2, a material baffle 61 is arranged on the upper part of one end, back to the cooling cylinder 2, of a conveying device A9, the lower edge of the material baffle 61 is located between the axis of the cylinder body 57 and the bottom edge of the discharge end of the cylinder body 57, a material guide flanging 60 is inwards arranged at the feed end of the cooling cylinder 2, the edge of the material guide flanging 60 is located in the feed end of the cylinder body 57, and an air outlet C10 is arranged at the top of the cooling cylinder.

The knockout transverse plates 59 are uniformly distributed in multiple rows by taking the axis of the cylinder 57 as the center, and each row of knockout transverse plates 59 are distributed in parallel with the axis of the cylinder 57.

The two adjacent rows of knockout transverse plates 59 are distributed in a staggered manner.

The transverse knockout plate 59 is vertically fixed on the inner wall of the cylinder 57, and a folded edge is arranged at one side edge of the transverse knockout plate 59 facing the axis of the cylinder 57, and the folding direction of the folded edge is the same as the rotation direction of the cylinder 57.

The striker plate 61 is equipped with the protection gas shower nozzle 63 towards a side end face of barrel 57, the axle center department that is located barrel 57, protection gas shower nozzle 63 and protection gas intake pipe 62 intercommunication, protection gas shower nozzle 63 spun protection gas is removed to the feed end of barrel 57 by the discharge end of barrel 57 under draught fan B's effect to get into between barrel 57 and the cooling cylinder 2, get into gas vent C10 at last from the gap between the feed end of barrel 57 and the turn-ups 60.

The cylinder body 57 is connected with the cooling cylinder 2 in a coaxial rotation mode through the roller 68, the roller 68 is uniformly distributed between the cylinder body 57 and the cooling cylinder 2 by taking the axis of the cylinder body 57 as the center, and annular bosses matched with the rims of the roller 68 are arranged at the positions, corresponding to the roller 68, of the outer wall of the cylinder body 57 and the positions, corresponding to the roller 68, of the inner wall of the cooling cylinder 2.

A gear ring 64 is fixed on the outer side wall of the cylinder body 57, gears 67 which are matched and meshed are rotatably connected to the positions, corresponding to the gear ring 64, on the two sides of the lower portion of the inner wall of the cooling cylinder 2, a driving gear 65 is fixed on an output shaft of the driving motor A58, and the driving gear 65 penetrates through a transmission through hole 66 formed in the cooling cylinder 2 and then is in meshing transmission with the gear ring 64.

The bottom of the cooling cylinder 2 is fixed with a support leg 69.

The cooling tank 3 comprises a vertical shaft 72 at the axis position in the cooling tank 3, a helical blade 73 is fixed on the side wall of the vertical shaft 72 positioned in the cooling tank 3, a driving motor B74 is fixed at the axis position at the top of the cooling tank 3, the vertical shaft 72 sequentially penetrates through the top plate of the cooling tank 3 and the output shaft of the driving motor B74 coaxially in the upward direction, the vertical shaft 72 is coaxially fixed with the output shaft of the driving motor B74, the vertical shaft 72 is a hollow shaft, air holes 75 communicated with the cavity in the vertical shaft 72 are formed in the edge of the helical blade 73, the air holes 75 are uniformly distributed along the helical blade 73, and the top end of the vertical shaft 72 is communicated with a cooling gas supply device; and a feeding through hole 76 connected with a conveying device B11 is formed in one side, facing away from a cooling exhaust port B12, of the top of the cooling tank 3, of the driving motor B74, and a discharging pipe 71 is formed in the bottom of the cooling tank 3.

The bottom end of the vertical shaft 72 is provided with a conical tip, the conical surface of the conical tip is provided with a plurality of air holes 75 communicated with the cavity in the vertical shaft 72, and the air holes 75 are uniformly distributed on the conical surface.

The discharge pipe 71 is located at the axis of the bottom of the cooling tank 3, and the inner wall of the bottom of the cooling tank 3 is a slope 70 which is inclined downwards along the direction from outside to inside.

The tail end of the first leftover material conveying box 17 is communicated with a conveying through hole A17' formed in the side wall of the second leftover material conveying box 18 at the starting end; the tail end of the leftover material second conveying box 18 is communicated with a conveying through hole B18' formed in the side wall of the leftover material third conveying box 19 at the starting end; the end of the scrap third conveying box 19 is communicated with a conveying through hole C19' formed in the side wall of the scrap fourth conveying box 20 at the beginning.

The first transfer box 17 internal fixation of leftover bits has transfer frame A21, be equipped with conveyer belt A28 on the transfer frame A21, the top of transfer frame A21 stretches out the first transfer box 17 of leftover bits and then is connected with the discharge gate of make-up machine 7, the end of transfer frame A21 passes in the transfer through-hole A17' gets into leftover bits second transfer box 18.

A conveying frame B26 is fixed in the leftover material second conveying box 18, a conveying belt B29 is arranged on the conveying frame B26, the starting end of the conveying frame B26 is positioned below a conveying frame A21 extending into the leftover material second conveying box 18, a conveying frame A21 is positioned in the range of a conveying frame B26, and the tail end of the conveying frame B26 penetrates through a conveying through hole B18' to enter the leftover material third conveying box 19.

A conveying rack C34 is fixed in the third leftover material conveying box 19, a conveying belt C36 is arranged on the conveying rack C34, the starting end of the conveying rack C34 is positioned below a conveying rack B26 extending into the third leftover material conveying box 19, the conveying rack B26 is positioned in the range of a conveying rack C34, and the tail end of the conveying rack C34 penetrates through a conveying through hole C19' to enter the fourth leftover material conveying box 20.

A conveying frame D40 is fixed in the leftover fourth conveying box 20, a conveying belt D42 is arranged on the conveying frame D40, the starting end of the conveying frame D40 is positioned below a conveying frame C34 extending into the leftover fourth conveying box 20, the conveying frame C34 is positioned in the range of a conveying frame D40, and the tail end of the conveying frame D40 extends out of the leftover fourth conveying box 20 and then is connected with a conveying device E15.

Arrow-shaped protrusions 31 are respectively arranged on the outer surface of the conveyor belt A28, the outer surface of the conveyor belt B29, the outer surface of the conveyor belt C36 and the outer surface of the conveyor belt D42, and the direction of the arrow-shaped protrusions 31 is the same as the conveying direction.

A baffle plate a27 is fixed at the end of the conveying frame B26 corresponding to the conveying frame a21 on the side far from the conveying frame a21, a baffle plate B35 is fixed at the end of the conveying frame C34 corresponding to the conveying frame B26 on the side far from the conveying frame B26, and a baffle plate C41 is fixed at the end of the conveying frame D40 corresponding to the conveying frame C34 on the side far from the conveying frame C34.

The two sides of the conveyor belt A28, the two sides of the conveyor belt B29, the two sides of the conveyor belt C36 and the two sides of the conveyor belt D42 are respectively in rotary connection with the corresponding conveying frame A21, the conveying frame B26, the conveying frame C34 and the conveying frame D40 through carrier rollers 32, the rolling axes of the carrier rollers 32 are inclined downwards along the direction from the outer side to the inner side, and the carrier rollers 32 are respectively connected with the conveying frame A21, the conveying frame B26, the conveying frame C34 and the conveying frame D40 through the roller frames.

The transfer rack a21, the transfer rack B26, the transfer rack C34 and the transfer rack D40 are fixed with pistons 33, and piston rods of the pistons 33 reciprocate in a horizontal direction perpendicular to the corresponding transfer racks.

The piston rod ends of the pistons 33 are also connected with the carrier rollers 32 through roller frames, and one or more carrier rollers 32 are arranged between two adjacent pistons 33.

The pistons 33 on the conveying frame A21 are symmetrically arranged on the conveying frame A21 by taking the center of the conveying belt A28 as a symmetry axis.

The first idler 32 is connected to the piston rod end of the piston 33 in the conveying direction of the conveyor belt a 28.

Two carrier rollers 32 are arranged between two adjacent pistons 33.

Along the conveying direction of the conveyor belt B29, the piston 33 on the conveying frame B26 on the side of the baffle A27 is adjacent to the piston 33 on the other side of the conveying frame B26, the piston 33 on the side of the baffle A27 is located in front, two carrier rollers 32 are arranged between the adjacent pistons 33 on the conveying frame B26 on the same side, and the first carrier roller 32 on the rear side of the baffle A27 is connected with the conveying frame B26 through the piston 33.

The both sides inner wall and the initial end inner wall of leftover bits second transfer case 18 are fixed with the heating pipe A30 of intercommunication respectively, heating pipe A30 and air inlet A22 intercommunication, heating pipe A30 evenly is equipped with the gas pocket towards one side of conveying frame B26, gas vent B23 is located the top of leftover bits third transfer case 19, stretches into leftover bits third transfer case 19 position department corresponding to conveyer belt B29.

Along the conveying direction of the conveyor belt C36, the piston 33 on the conveying frame C34 on the side of the baffle B35 is adjacent to the piston 33 on the other side of the conveying frame C34, the piston 33 on the side of the baffle B35 is located in front, an idler 32 is arranged between the adjacent pistons 33 on the conveying frame C34 on the same side, and the first idler 32 on the rear side of the baffle B35 is connected with the conveying frame C34 through the piston 33.

In the conveying direction of the conveyor belt C36, a shaking roller 39 is provided on the conveying stand C34 between the piston 33 and the adjacent idler 32 on the front side thereof.

An annular groove 46 is formed in the middle of the side wall of the shaking roller 39, the edge of the conveying belt C36 is in contact with the annular groove 46, a cam roller 47 is rotatably connected to one side, opposite to the conveying belt C36, of the shaking roller 39 on the conveying frame C34, the cam roller 47 is in contact with the side wall of the shaking roller 39, a shaft rod A45 of the cam roller 47 penetrates through the conveying frame C34 downwards and then is fixed to an output shaft of a driving motor C48 fixed to the conveying frame C34, a shaft rod B49 of the shaking roller 39 is connected with a strip-shaped through hole 50 formed in the conveying frame C34, the length of the strip-shaped through hole 50 is larger than the sum of the diameter of the shaft rod B49 and the maximum offset of the cam roller 47, an elastic filling pad 51 is filled and fixed between the hole wall, facing one side of the conveying belt C36, and the shaft rod B49 in the strip-shaped through hole 50, and the elastic filling pad.

The shaft B49 is provided with a limit convex ring 54, the bottom end of the shaft B49 is fixed with a limit convex plate 55 through threads, the limit convex ring 54 is contacted with the top surface of the conveying frame C34, and the limit convex plate 55 is contacted with the bottom of the conveying frame C34.

A buffer ring 52 is rotatably connected in the annular groove 46 through an annular sleeve 53, and the outer diameter of the buffer ring 52 is smaller than that of the shaking roller 39; the middle part of the outer side wall of the buffer ring 52 is provided with an annular cambered groove.

A heating pipe B37 is arranged in the third leftover material conveying box 19 and positioned between the upper layer and the lower layer of the conveying belt C36, and the heating pipe B37 is respectively communicated with an air inlet B24 arranged on the side wall of the joint of the third leftover material conveying box 19 and the fourth conveying box 20 and an air outlet D25 arranged on the side wall of the starting end of the third leftover material conveying box 19.

The heating pipe B37 is communicated with the exhaust port D25 through the heating branch pipes 38 located at both sides of the carrier C34.

The outer surface of the heating pipe B37 facing the conveyor belt C36 is uniformly distributed with radiating fins 45.

Along the conveying direction of the conveyor belt D42, the piston 33 on the conveyor frame D40 on the side of the baffle C41 is adjacent to the piston 33 on the other side of the conveyor frame D40, the piston 33 on the side of the baffle C41 is located in front, two carrier rollers 32 are arranged between the adjacent pistons 33 on the conveyor frame D40 on the same side, and the first carrier roller 32 on the rear side of the baffle C41 is connected with the conveyor frame D40 through the piston 33.

A plurality of upper and lower vibrators 56 are uniformly distributed between the upper layer and the lower layer of the conveyor belt D42 and between the conveying frames D40, vibration sources of the upper and lower vibrators 56 are in contact with the conveyor belt D42, and the bottoms of the upper and lower vibrators 56 are fixed on a connecting transverse plate 44 fixedly arranged between the conveying frames D40.

The electric heating devices 43 are arranged on the inner walls of the two sides in the leftover material fourth conveying box 20.

The first leftover material conveying box 17 inclines downwards along the conveying direction, the second leftover material conveying box 18 inclines upwards along the conveying direction, the third leftover material conveying box 19 inclines downwards along the conveying direction, and the fourth leftover material conveying box 20 inclines upwards along the conveying direction.

The desulfurization tanks 1 are provided in plurality and are sequentially and uniformly distributed along the conveying direction of the conveying device A9.

The bottom of the rubber powder storage bin 4 is further communicated with a conveying device G14 ', the conveying direction of the conveying device G14 ' is opposite to the conveying direction of the conveying device D14, and the conveying device G14 ' is used for communicating the rubber powder storage bin 4 with a rubber powder loading area.

The utility model discloses in the time of using, rubber is cooled off in accomplishing the conveying to cooling cylinder 2 through conveyer A9 after the desulfurization in digester 1, because the temperature of gluing this moment is higher, thereby to let in the protective gas in barrel 57 to cooling cylinder 2 in order to avoid the contact of oxygen in glue and the air, barrel 57 rotates simultaneously, make and ceaselessly fall down under the action of gravity after the glue that gets into in barrel 57 from conveyer A9 is broken up fully, and lower protective gas full contact of temperature is lower for glue in the process of breaking up and dropping down cools down; the glue which is initially cooled to the ignition point below in the cylinder 57 is discharged from the cylinder 57 and then is conveyed into the cooling tank 3 through a conveying device B11 to be fully cooled; the glue at the bottom in the cooling tank 3 is continuously turned upwards after the rotation of the helical blade 73, and the cooling gas provided by the cooling gas supply device continuously cools the glue through the edge of the helical blade 73 and the air hole 75 at the bottom of the vertical shaft 72 until the glue in the cooling tank 3 is cooled to the room temperature; after the rubber in the cooling tank 3 is cooled to room temperature, the rubber powder in the cooling tank 3 can be conveyed to a rubber powder loading area through a conveying device G14' for loading and selling, or the rubber powder in the cooling tank 3 can be conveyed to a mixing roll 5 through a conveying device D14 for mixing with raw rubber and other additives in proportion; the mixed glue is sequentially conveyed to a plurality of calenders 6 for a plurality of calendering through a conveying device E15, and the glue after being calendered is conveyed to a forming machine 7 for final compression forming through an output device of the last calender; when the forming machine 7 discharges materials, the discharged glue is trimmed, cut off and then conveyed to a discharged material cooling conveying device 8 through a conveying device F16 to be cooled and boxed; leftover materials generated by trimming and cutting are conveyed back to the conveying device E15 through the leftover material first conveying box 17, the leftover material second conveying box 18, the leftover material third conveying box 19 and the leftover material fourth conveying box 20 in sequence so as to be calendered again, and waste of rubber materials is avoided; the action of the piston 33 in the first leftover material conveying box 17, the second leftover material conveying box 18, the third leftover material conveying box 19 and the fourth leftover material conveying box 20 can enable the rubber on each corresponding conveying belt to be positioned in the middle of the conveying belt and not to be adhered to the conveying belt. The pistons 33 on the conveying frames A21 positioned at the two sides of the conveyor belt A28 are arranged in pairs, and the pistons 33 in pairs act simultaneously, so that the leftover materials at the two sides generated by trimming and the row of leftover materials generated by cutting can be drawn together inwards; the piston 33 on the conveying frame B26 positioned at two sides of the conveying belt B29 is arranged, and the piston 33 acts successively, so that leftover materials falling from the conveying belt A28 to the conveying belt B29 can be conveyed centrally as much as possible, and the heating pipe A30 heats the leftover materials on the conveying belt B29, so that the cooling of the leftover materials is avoided; through the arrangement of the pistons 33 and the shaking rollers 39 on the conveying frames C34 positioned at two sides of the conveying belt C36, the sequential action of the pistons 33 and the continuous action of the shaking rollers 39, the leftover materials falling from the conveying belt B29 to the conveying belt C36 can be conveyed in a centered mode as much as possible and cannot be adhered to the conveying belt C36, and the leftover materials on the conveying belt C36 are further prevented from being cooled through the heating of the heating pipe B37; through the arrangement of the pistons 33 on the conveying frames D40 positioned at two sides of the conveying belt D42, the sequential action of the pistons 33 and the continuous up-and-down vibration work of the up-and-down vibrator 56 on the conveying belt D42, the leftover materials falling onto the conveying belt D42 on the conveying belt C36 can be conveyed in a centered mode as far as possible and cannot be adhered to the conveying belt D42; if the heat of the heating pipe A30 and the heating pipe B37 is insufficient when the production line is just started to operate, the electric heating device 43 in the leftover material fourth conveying box 20 heats the leftover material on the conveying belt D42, and the leftover material is prevented from cooling.

Claims

1. Retrieve leftover bits recovery unit in rubber desulfurization, mixing, the calendering production line, its characterized in that: including connecting mixer (5), calender (6), make-up machine (7) and ejection of compact cooling conveyer (8) in proper order, mixer (5) are connected through conveyer E (15) with calender (6), the discharge gate of make-up machine (7) passes through conveyer F (16) and is connected with ejection of compact cooling conveyer (8), the discharge gate of make-up machine (7) is connected through leftover bits conveyer between one side and conveyer E (15) of ejection of compact cooling conveyer (8) dorsad, leftover bits conveyer is including the first transfer box of leftover bits (17), leftover bits second transfer box (18), leftover bits third transfer box (19) and leftover bits fourth transfer box (20) that connect gradually, the initiating terminal of leftover bits second transfer box (18) is equipped with air inlet A (22), air inlet A (22) pass through the exhaust port B that leftover bits second transfer box (18) and leftover bits third transfer box (19) top were established (23) The tail end of the third leftover material conveying box (19) is provided with an air inlet B (24), the air inlet B (24) is communicated with an air outlet D (25) arranged at the starting end of the third conveying box (19) through the third conveying box (19), the air outlet B (23) and the air outlet D (25) are both communicated with an exhaust gas treatment device through an induced draft fan C, and an electric heating device (43) is arranged in the fourth leftover material conveying box (20);

the tail end of the first leftover material conveying box (17) is communicated with a conveying through hole A (17') formed in the side wall of the second leftover material conveying box (18) at the starting end; the tail end of the leftover material second conveying box (18) is communicated with a conveying through hole B (18') formed in the side wall of the leftover material third conveying box (19) at the starting end; the tail end of the leftover material third conveying box (19) is communicated with a conveying through hole C (19') formed in the side wall of the leftover material fourth conveying box (20) at the starting end;

a conveying frame A (21) is fixed in the first leftover material conveying box (17), a conveying belt A (28) is arranged on the conveying frame A (21), the starting end of the conveying frame A (21) extends out of the first leftover material conveying box (17) and then is connected with a discharge port of the forming machine (7), and the tail end of the conveying frame A (21) penetrates through a conveying through hole A (17') and enters a second leftover material conveying box (18);

a conveying frame B (26) is fixed in the leftover material second conveying box (18), a conveying belt B (29) is arranged on the conveying frame B (26), the starting end of the conveying frame B (26) is positioned below a conveying frame A (21) extending into the leftover material second conveying box (18), the conveying frame A (21) is positioned in the range of the conveying frame B (26), and the tail end of the conveying frame B (26) penetrates through a conveying through hole B (18') to enter a third leftover material conveying box (19);

a conveying frame C (34) is fixed in the leftover material third conveying box (19), a conveying belt C (36) is arranged on the conveying frame C (34), the starting end of the conveying frame C (34) is positioned below a conveying frame B (26) extending into the leftover material third conveying box (19), the conveying frame B (26) is positioned in the range of the conveying frame C (34), and the tail end of the conveying frame C (34) penetrates through a conveying through hole C (19') to enter a leftover material fourth conveying box (20);

a conveying frame D (40) is fixed in the leftover material fourth conveying box (20), a conveying belt D (42) is arranged on the conveying frame D (40), the starting end of the conveying frame D (40) is positioned below a conveying frame C (34) extending into the leftover material fourth conveying box (20), the conveying frame C (34) is positioned in the range of the conveying frame D (40), and the tail end of the conveying frame D (40) extends out of the leftover material fourth conveying box (20) and then is connected with a conveying device E (15);

arrow-shaped protrusions (31) are respectively arranged on the outer surface of the conveyor belt A (28), the outer surface of the conveyor belt B (29), the outer surface of the conveyor belt C (36) and the outer surface of the conveyor belt D (42), and the direction of the arrow-shaped protrusions (31) is the same as the conveying direction;

a baffle A (27) is fixed at one side of the conveying frame B (26) far away from the conveying frame A (21) and corresponding to the tail end of the conveying frame A (21), a baffle B (35) is fixed at one side of the conveying frame C (34) far away from the conveying frame B (26) and corresponding to the tail end of the conveying frame B (26), and a baffle C (41) is fixed at one side of the conveying frame D (40) far away from the conveying frame C (34) and corresponding to the tail end of the conveying frame C (34);

the two sides of the conveyor belt A (28), the two sides of the conveyor belt B (29), the two sides of the conveyor belt C (36) and the two sides of the conveyor belt D (42) are respectively in rotary connection with the corresponding conveying frame A (21), the corresponding conveying frame B (26), the corresponding conveying frame C (34) and the corresponding conveying frame D (40) through carrier rollers (32), the rolling axis of each carrier roller (32) is inclined downwards along the direction from the outer side to the inner side, and each carrier roller (32) is respectively connected with the corresponding conveying frame A (21), the corresponding conveying frame B (26), the corresponding conveying frame C (34) and the corresponding conveying frame D (40) through the corresponding roller frame;

a piston (33) is fixed on the conveying frame A (21), the conveying frame B (26), the conveying frame C (34) and the conveying frame D (40), and a piston rod of the piston (33) moves in a reciprocating mode along the horizontal direction perpendicular to the corresponding conveying frames;

the end parts of the piston rods of the pistons (33) are also connected with the carrier rollers (32) through the roller frame, and one or more carrier rollers (32) are arranged between every two adjacent pistons (33).

2. The scrap recycling apparatus in a devulcanizing, mixing and calendering line for recycling rubber as recited in claim 1, wherein: the pistons (33) on the conveying frame A (21) are symmetrically arranged on the conveying frame A (21) by taking the center of the conveying belt A (28) as a symmetry axis;

a first idler (32) is connected with the end of the piston rod of the piston (33) along the conveying direction of the conveyor belt A (28);

two carrier rollers (32) are arranged between two adjacent pistons (33).

3. The scrap recycling apparatus in a devulcanizing, mixing and calendering line for recycling rubber as recited in claim 1, wherein: along the conveying direction of the conveying belt B (29), the piston (33) on the conveying frame B (26) on the side where the baffle A (27) is located is adjacent to the piston (33) on the other side of the conveying frame B (26), the piston (33) on the side where the baffle A (27) is located in front, two carrier rollers (32) are arranged between the adjacent pistons (33) on the conveying frame B (26) on the same side, and the first carrier roller (32) located behind the baffle A (27) is connected with the conveying frame B (26) through the piston (33).

4. The scrap recycling apparatus in a devulcanizing, mixing and calendering line for recycling rubber as recited in claim 1, wherein: the both sides inner wall and the top inner wall of leftover bits second transfer case (18) are fixed with heating pipe A (30) of intercommunication respectively, heating pipe A (30) and air inlet A (22) intercommunication, heating pipe A (30) evenly are equipped with the gas pocket towards one side of conveying frame B (26), gas vent B (23) are located the top of leftover bits third transfer case (19), stretch into leftover bits third transfer case (19) position department corresponding to conveyer belt B (29).

5. The scrap recycling apparatus in a devulcanizing, mixing and calendering line for recycling rubber as recited in claim 1, wherein: along the conveying direction of the conveyor belt C (36), the piston (33) on the conveying frame C (34) on the side where the baffle B (35) is located is adjacent to the piston (33) on the other side of the conveying frame C (34), the piston (33) on the side where the baffle B (35) is located in front, a carrier roller (32) is arranged between the adjacent pistons (33) on the conveying frame C (34) on the same side, and the first carrier roller (32) located behind the baffle B (35) is connected with the conveying frame C (34) through the piston (33).

6. The scrap recycling apparatus in a devulcanizing, mixing and calendering line for recycling rubber as recited in claim 5, wherein: a shaking roller (39) is arranged on the conveying frame C (34) between the piston (33) and the adjacent carrier roller (32) at the front side of the piston along the conveying direction of the conveying belt C (36); an annular groove (46) is formed in the middle of the side wall of the shaking roller (39), the edge of the conveyor belt C (36) is in contact with the annular groove (46), a cam roller (47) is rotatably connected to one side, opposite to the conveyor belt C (36), of the conveyor frame C (34), the cam roller (47) is in contact with the side wall of the shaking roller (39), a shaft rod A (45) of the cam roller (47) penetrates through the conveyor frame C (34) downwards and then is fixed to an output shaft of a driving motor C (48) fixed to the conveyor frame C (34), a shaft rod B (49) of the shaking roller (39) is connected with a strip-shaped through hole (50) formed in the conveyor frame C (34), the length of the strip-shaped through hole (50) is larger than the sum of the diameter of the shaft rod B (49) and the maximum offset of the cam roller (47), and a shaft rod fixing cushion (51) is filled between the hole wall, facing one side of the conveyor belt C (36), in the strip-shaped through hole (50) and the strip-shaped through hole B (49), the elastic filling pad (51) constantly contacts the shaking roller (39) with the cam roller (47).

7. The scrap recycling apparatus in a devulcanizing, mixing and calendering line for recycling rubber as recited in claim 1, wherein: a heating pipe B (37) is arranged in the third leftover material conveying box (19) and positioned between the upper layer and the lower layer of the conveying belt C (36), and an air inlet B (24) arranged on the side wall of the joint of the heating pipe B (37) and the third leftover material conveying box (19) and the fourth conveying box (20) is communicated with an air outlet D (25) arranged on the side wall of the starting end of the third leftover material conveying box (19) respectively; the heating pipe B (37) is communicated with the exhaust port D (25) through heating branch pipes (38) positioned at two sides of the conveying frame C (34).

8. The scrap recycling apparatus in a devulcanizing, mixing and calendering line for recycling rubber as recited in claim 1, wherein: along the conveying direction of the conveyor belt D (42), the piston (33) on the conveying frame D (40) on the side where the baffle C (41) is located is adjacent to the piston (33) on the other side of the conveying frame D (40), the piston (33) on the side where the baffle C (41) is located in front, two carrier rollers (32) are arranged between the adjacent pistons (33) on the conveying frame D (40) on the same side, and the first carrier roller (32) located behind the baffle C (41) is connected with the conveying frame D (40) through the piston (33).

9. The scrap recycling apparatus in a devulcanizing, mixing and calendering line for recycling rubber as recited in claim 8, wherein: a plurality of upper and lower vibrators (56) are uniformly distributed between the upper layer and the lower layer of the conveying belt D (42) and between the conveying frames D (40), vibration sources of the upper and lower vibrators (56) are in contact with the conveying belt D (42), and the bottoms of the upper and lower vibrators (56) are fixed on a connecting transverse plate (44) fixedly arranged between the conveying frames D (40).

10. The scrap recycling apparatus in a devulcanizing, mixing and calendering line for recycling rubber as recited in claim 1, wherein: the first leftover material conveying box (17) inclines downwards along the conveying direction, the second leftover material conveying box (18) inclines upwards along the conveying direction, the third leftover material conveying box (19) inclines downwards along the conveying direction, and the fourth leftover material conveying box (20) inclines upwards along the conveying direction.