Kneading machine for regenerated rubber production pretreatment

Abstract

The invention relates to the technical field of regenerated rubber devices, and discloses a kneading machine for regenerated rubber production pretreatment, the kneading machine comprises an equipment shell assembly and a kneading unit, the kneading unit is arranged in the equipment shell assembly, the equipment shell assembly comprises a machine shell, and a main shaft is rotatably arranged in an axis area in the machine shell; a feeding auger is arranged on the surface of the outer side of the main shaft and used for being matched with rotation of the main shaft to convey rubber materials, and through spiral staggered arrangement of the first shear knives and the second shear knives and pressure sensing feedback adjustment, the problem of particle aggregation caused by uneven dispersion of a filling agent in a traditional kneading machine is solved. A pressure sensor monitors shearing force in real time and cooperates with a second shear knife driven by an electric push rod to reciprocate left and right, filler aggregates such as carbon black can be specifically crushed, the mixing uniformity of a rubber matrix and the filler is effectively improved, and the influence of residual particles of a vulcanizing agent on product performance is effectively avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of regenerating rubber devices, in particular to a kneading machine for pre-treatment of regenerating rubber production. BACKGROUND

[0002] Regenerating rubber is a kind of rubber, which is processed from the vulcanized corner waste in rubber product production as raw material into rubber with certain plasticity and reusability, and is called regenerating rubber. According to the different waste rubber used, the regenerating rubber is divided into tire class, inner tube class, rubber shoe class and the like. The regenerating rubber can be used to replace raw rubber for rubber products.

[0003] The Chinese patent with the application number CN202020093899.7 discloses a rubber kneading machine, which comprises a water tank and a pipe body. A main shaft capable of rotating is arranged in the pipe body. A feeding port is arranged on the side wall of one end of the pipe body, and a discharging port is arranged on the other end of the pipe body. A feeding auger, a discharging disc and a disc cutter are nested on the main shaft. The feeding auger and the disc cutter rotate synchronously with the main shaft. A fixed cutter block is fixed on the outer wall of the pipe body. The fixed guide block extends into the pipe body through the outer wall of the pipe body. The cold water rubber kneading machine is improved in structure through repeated tests, thereby obtaining better kneading and shearing effects, and the obtained rubber has better Mooney viscosity and better processing performance.

[0004] Since carbon black, white carbon black, calcium carbonate and other fillers are usually added to the rubber material, these fillers exist in the form of particles with particle sizes ranging from several nanometers to tens of microns. For example, the particle size of carbon black particles is generally 10-50 nanometers. They are mixed into the rubber matrix through a dispersion process. If the dispersion is poor, larger agglomerated particles will be formed, thereby causing uneven kneading or causing the sulfur, peroxide and other vulcanizing agents used in the vulcanization process, as well as zinc oxide and stearic acid and other accelerators, to remain in the rubber in the form of particles when the dispersion is not complete or the vulcanization reaction is not complete.

[0005] Therefore, it is necessary to solve the above problems by using a kneading machine for pre-treatment of regenerating rubber production. SUMMARY

[0006] The present application aims to provide a kneading machine for pre-treatment of regenerating rubber production to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a kneading machine for pre-treatment of regenerating rubber production, comprising a device shell assembly and a kneading unit. The kneading unit is arranged inside the device shell. The device shell assembly comprises a shell. A main shaft is arranged in the axial region inside the shell. A feeding auger is arranged on the outer surface of the main shaft. The feeding auger is used to cooperate with the rotation of the main shaft to convey the rubber material. The inside of the shell is provided with a conveying chamber, the outer side of the conveying chamber is provided with a feeding pipe in communication, and the outer surface of the conveying chamber is provided with a cooling unit, and the cooling unit can cool the inside of the conveying chamber. The main shaft penetrates the shell, the circulating bin and the conveying chamber in sequence, the outer side of the shell is provided with a discharging unit, and the discharging unit can receive the rubber material in the conveying chamber and discharge it to the outside. The kneading unit comprises a driving plate, the driving plate is located on the outer surface of the conveying chamber, the inside of the driving plate is provided with a containing bin, and the containing bin is provided with a driving mechanism, and the output end of the driving mechanism is provided with a second shearing knife.

[0008] Preferably, the kneading unit comprises a first shearing knife, the first shearing knife is arranged on the surface of the main shaft, the number of the first shearing knife is provided with a plurality, and the plurality of first shearing knives are arranged on the outer surface of the main shaft in horizontal direction, the plurality of first shearing knives are arranged in annular position along the outer circumferential surface of the main shaft, and the plurality of first shearing knives form a spiral channel.

[0009] Preferably, the output end of the driving mechanism penetrates the shell and is arranged in the inside of the conveying chamber, and the side of the conveying chamber close to the pneumatic push rod is provided with a sliding groove. The side of the output end of the pneumatic push rod in contact with the shell is provided with a sealing gasket, the output end of the pneumatic push rod is provided with a second shearing knife, and the second shearing knife cooperates with the first shearing knife to knead and cut the rubber in the conveying chamber.

[0010] Preferably, the left and right sides of the driving plate are provided with electric push rods, and the end of the electric push rod away from the driving plate is fixedly arranged on the outer surface of the shell, and the two electric push rods can control the horizontal movement of the driving plate along the outer surface of the shell. The number of the containing bin, the pneumatic push rod and the second shearing knife is provided with a plurality, and each containing bin, pneumatic push rod and second shearing knife is arranged in horizontal direction along the driving plate, the number of the sliding groove on the conveying chamber is consistent with the pneumatic push rod and the second shearing knife, the bottom of the driving plate always keeps close contact with the outer surface of the conveying chamber, the number of the kneading unit is provided with a plurality, and each kneading unit is arranged in circumferential direction along the surface of the shell on the surface of the conveying chamber.

[0011] Preferably, the end of each electric push rod close to the second shearing knife is provided with a pressure sensor, and the electric push rod can obtain the pressure data generated in the process that the second shearing knife contacts with the rubber material by using the pressure sensor. When the electric push rod is in the extended state, the distance between the second shearing knife and the main shaft is shortened, and the second shearing knife can be in contact with the feeding auger on the main shaft, when the electric push rod is in the contracted state, the distance between the second shearing knife and the main shaft is increased, and the second shearing knife is no longer in contact with the feeding auger.

[0012] Preferably, the equipment shell assembly further comprises a support seat, the support seat is located at the bottom of the cabinet, and the number of the support seat is set to at least two, and each support seat is symmetrically distributed on the left and right sides of the cabinet. The side surface of the support plate close to the feeding pipe is provided with a limiting frame, and the inside of the limiting frame is rotatably connected with the outside of the end of the main shaft, and the end of the main shaft close to the limiting frame is fixedly provided with a circumferential driving device, and the circumferential driving device can drive the main shaft to rotate along the axis of the output shaft of the circumferential driving device.

[0013] Preferably, the discharging unit comprises a discharging bin, the axis area of the discharging bin is rotatably connected with the outside surface of the main shaft, and the end of the main shaft close to the discharging bin penetrates through the discharging bin and is arranged in the inside of the discharging bin. The inside wall of the side of the discharging bin facing the cabinet is fixedly provided with a discharging plate, the surface of the discharging plate is provided with a plurality of discharging holes, and the end of the main shaft close to the discharging bin penetrates through the discharging plate and is rotatably connected with the axis of the discharging plate.

[0014] Preferably, the outside surface of the main shaft close to the discharging bin is fixedly provided with a rotating disc, the outside surface of the rotating disc is fixedly provided with an adjusting rod, the inside of the adjusting rod is provided with a micro motor, the output end of the micro motor is fixedly provided with a cutting knife, and the surface of the cutting knife is in close contact with the surface of the discharging plate.

[0015] The technical effects and advantages of the present application are as follows: 1. The present application solves the problem of agglomerated particles caused by uneven dispersion of fillers in traditional kneading machines through the spiral misalignment arrangement of the first and second shearing knives and pressure sensor feedback adjustment. The pressure sensor monitors the shear force in real time, and the second shearing knife driven by the electric push rod reciprocates left and right, which can break the agglomerates of fillers such as carbon black, effectively improving the uniformity of rubber matrix and fillers, and effectively avoiding the influence of residual particles of vulcanizing agent on product performance.

[0016] 2. The present application controls the kneading temperature below 60 DEG C through heat exchange between the cooling liquid injected by the liquid inlet pipe and the conveying chamber, completely solves the problem of rubber carbonization caused by high temperature, and a plurality of groups of kneading units are distributed in a circumferential array, which cooperates with the continuous conveying of the main shaft feeding auger, the rotating cutting knife of the discharging unit and the adjustable discharging hole design can accurately control the discharging length, and meet the strict requirements of subsequent processing on the form of materials. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the overall structure schematic diagram of the present application; Figure 2 It is the overall structure front view of the present application; Figure 3 It is the overall structure schematic diagram of the present application in open state; Figure 4 It is the overall structure schematic diagram of the present application in main shaft and feed auger installation state; Figure 5 It is the overall structure schematic diagram of the present application in drive plate and containing bin installation state; Figure 6 It is the overall structure schematic diagram of the present application in containing bin open state; Figure 7 It is the overall structure schematic diagram of the present application in discharge bin open state.

[0018] In the figure: 1, equipment shell assembly; 101, main shaft; 102, casing; 103, connecting rod; 104, feed pipe; 105, limiting frame; 106, liquid inlet pipe; 107, liquid outlet pipe; 108, support seat; 109, feed auger; 110, discharge bin; 111, rotating disc; 112, cutting knife; 2, kneading unit; 201, containing bin; 202, electric push rod; 203, drive plate; 204, second shearing knife; 205, first shearing knife. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0020] The present application provides a kind of kneading machine for regenerating rubber production pretreatment as shown in Figures 1 to 7 The present application provides a kind of kneading machine for regenerating rubber production pretreatment as shown in

[0021] The device shell assembly 1 comprises a casing 102, the outer surface of the casing 102 is provided with a feeding pipe 104, the inside of the casing 102 is fixedly provided with a conveying chamber, and the inside of the conveying chamber is in communication with the feeding pipe 104, so that the rubber material to be kneaded can be sent into the inside of the conveying chamber through the feeding pipe 104, and the main shaft 101 is rotatably arranged in the inside of the casing 102 and penetrates the casing 102 and is located at the axial center area of the casing 102.

[0022] The end of the casing 102 away from the guide chamber is provided with a first cooling unit, and the first cooling unit is used for cooling the inside of the casing 102, the first cooling unit comprises a circulating chamber, the circulating chamber is located outside the conveying chamber, and the inside of the circulating chamber is wrapped outside the conveying chamber, the upper portion of the circulating chamber is provided with a liquid inlet pipe 106, and the lower portion of the circulating chamber is provided with a liquid outlet pipe 107, so that the cooling liquid can enter the inside of the circulating chamber through the liquid inlet pipe 106 and then be discharged to the outside through the liquid outlet pipe 107, and when the cooling liquid enters the inside of the circulating chamber, it will be in contact with the outer surface of the conveying chamber, thereby realizing the cooling of the rubber material in the conveying chamber, avoiding the high temperature of the rubber during the kneading process, thereby avoiding the carbonization or damage of the rubber.

[0023] The support unit comprises a support seat 108, the support seat 108 is located at the bottom of the casing 102, the number of the support seat 108 is at least two, and each support seat 108 is symmetrically distributed on the left and right sides of the casing 102, so that the two support seats 108 can provide good support force for the casing 102 during the kneading of the rubber, to ensure the stability of the casing 102 in the running state, and the side surface of the support plate close to the feeding pipe 104 is provided with a limiting frame 105, the inside of the limiting frame 105 is rotatably connected with the outer side of the end of the main shaft 101, the end of the main shaft 101 close to the limiting frame 105 is fixedly provided with a circumferential driving device (not shown in the figure), the surface of the main shaft 101 is provided with a feeding auger 109, the circumferential driving device can drive the main shaft 101 to rotate along the axis of the output shaft of the circumferential driving device, the circumferential driving device drives the main shaft 101 to rotate along the output shaft, and cooperates with the feeding auger 109 on the outer surface of the main shaft 101, so as to convey the rubber in the casing 102 along the horizontal direction of the casing, and the limiting frame 105 is used for limiting the main shaft 101, avoiding the eccentric force during the rotation of the main shaft 101, thereby avoiding the deviation.

[0024] The discharge bin 110 is fixedly arranged at one end of the shell 102 away from the feeding pipe 104, the axial center area of the discharge bin 110 is rotationally connected with the outer surface of the main shaft 101, the main shaft 101 penetrates the discharge bin 110 and is arranged in the discharge bin 110, the inner wall of the side of the discharge bin 110 facing the shell 102 is fixedly provided with a discharge plate, the surface of the discharge plate is provided with a plurality of discharge holes, and the end of the main shaft 101 close to the discharge bin 110 penetrates the discharge plate and is rotationally connected with the axial center of the discharge plate.

[0025] The outer surface of the main shaft 101 close to the discharge bin 110 is fixedly provided with a rotating disc 111, the outer surface of the rotating disc 111 is fixedly provided with an adjusting rod, the inside of the adjusting rod is provided with a micro motor, the output end of the micro motor is fixedly provided with a cutting knife 112, and the surface of the cutting knife 112 is in close contact with the surface of the discharge plate. In this way, when the rubber material moves to the discharge bin 110, the rotating disc 111 is driven to rotate by the rotation of the main shaft 101, and the plurality of connecting rods 103 and the cutting knife are controlled to rotate along the axial center of the main shaft 101, thereby realizing the cutting of the rubber material to a suitable size and length and discharging it to the outside for the next processing procedure. At the same time, the micro motor can change the included angle between the cutting knife 112 and the surface of the discharge plate during cleaning, so that the rubber material can be cut, and the cutting knife 112 is deflected by the micro motor, so that the cutting surface of the cutting knife 112 is in contact with the surface of the discharge plate, and the cutting force of the cutting knife 112 on the surface of the discharge plate is improved, thereby realizing the purpose of cleaning the excess material on the surface of the discharge plate.

[0026] The kneading unit 2 includes a first cutting knife 205 arranged on the surface of the main shaft 101, the number of the first cutting knife 205 is multiple, and the plurality of first cutting knives 205 are arranged in an array along the horizontal direction on the outer surface of the main shaft 101. The plurality of first cutting knives 205 are arranged in a ring-shaped staggered manner along the outer circumferential surface of the main shaft 101, and the plurality of first cutting knives 205 form a spiral channel.

[0027] The kneading unit 2 further includes a driving plate 203 mounted on the outer surface of the conveying chamber through the shell 102, the surface of the driving plate 203 is provided with a containing bin 201, the inside of the containing bin 201 is provided with a pneumatic push rod, the output end of the pneumatic push rod penetrates the shell 102 and is arranged in the conveying chamber, the side of the conveying chamber close to the pneumatic push rod is provided with a chute, the side of the output end of the pneumatic push rod in contact with the shell 102 is provided with a sealing gasket, the output end of the pneumatic push rod is provided with a second cutting knife 204, and the second cutting knife 204 cooperates with the first cutting knife 205 to cut and knead the rubber in the conveying chamber, thereby realizing the purpose of kneading the rubber material.

[0028] The left and right sides of the driving plate 203 are provided with electric push rods 202, the output ends of the electric push rods 202 are fixedly connected with the surface of the driving plate 203, and the ends of the electric push rods 202 away from the driving plate 203 are fixedly arranged on the outer side surface of the shell 102. The two electric push rods 202 can control the driving plate 203 to move horizontally along the outer side surface of the shell 102. The number of the accommodating bins 201, pneumatic push rods and second shearing knives 204 is set to be multiple, and each of the accommodating bins 201, pneumatic push rods and second shearing knives 204 is arrayed in the horizontal direction of the driving plate 203. The number of the chutes on the conveying chamber is consistent with the pneumatic push rods and the second shearing knives 204. The bottom of the driving plate 203 always keeps close contact with the outer side surface of the conveying chamber. In this way, the conveying chamber can always keep a sealed state during the process of moving the driving plate 203 horizontally along the surface of the conveying chamber by using the two electric push rods 202. The number of the kneading units 2 is set to be multiple, and each of the kneading units 2 is arrayed in the circumferential direction of the surface of the conveying chamber along the surface of the shell 102.

[0029] The end of each electric push rod 202 close to the second shearing knife 204 is provided with a pressure sensor. The electric push rod 202 can use the pressure sensor to obtain the pressure data generated during the contact between the second shearing knife 204 and the rubber material, and analyze the pressure data to determine the working condition of the rubber. When the electric push rod 202 is in the elongated state, the distance between the second shearing knife 204 and the main shaft 101 is shortened, and the second shearing knife 204 can contact the feeding auger 109 on the main shaft 101. When the electric push rod 202 is in the contracted state, the distance between the second shearing knife 204 and the main shaft 101 is increased, and the second shearing knife 204 cannot contact the feeding auger 109.

[0030] In use, first, the rubber material to be kneaded is placed in the conveying chamber through the feeding channel, then the driving device is started to rotate the main shaft 101 along the axis of the housing 102, so that the internal rubber material is horizontally conveyed to the direction of the discharge bin 110 by the rotation of the main shaft 101 and the feeding auger 109. At the same time, the pneumatic push rod is extended into the conveying chamber, which drives the second shear cutter 204 to move towards the axis of the conveying chamber, and cooperates with the first shear cutter 205 to realize the kneading and cutting of the rubber material in the conveying chamber. Then, the rubber material after kneading and cutting is conveyed to the vicinity of the discharge bin 110 by the movement of the main shaft 101 and the feeding auger 109, and gradually enters the discharge bin 110 through the discharge plate. At the same time, since the rotating disc 111 is fixedly connected to the outer side of the end of the main shaft 101 near the discharge bin 110, the rotating disc 111 will always rotate with the main shaft 101. Thus, the rotating disc 111 can drive the plurality of connecting rods 103 and the cutting knives to rotate along the axis of the main shaft 101. When the rubber material after kneading enters the discharge bin 110, it is cut by the plurality of cutting knives and discharged outside through the discharge port at the bottom of the discharge bin 110.

[0031] In addition, in the process of kneading and cutting the rubber, in order to avoid high temperature in the conveying chamber causing damage to the rubber or carbonization, the external injection device is connected to the liquid inlet pipe 106, and the liquid outlet pipe 107 is connected to the external drainage system. The external injection device injects the cooling liquid into the circulating bin through the liquid inlet pipe 106, so as to realize heat exchange in the conveying chamber and cool the second shear cutter 204 and the rubber material in the conveying chamber.

[0032] It should be noted that since the main shaft 101 is provided with the feeding auger 109, and the pneumatic push rod and the second shear cutter 204 are arranged above the conveying chamber. When the pneumatic push rod is opened and in the extended state, the second shear cutter 204 will be in contact with the feeding auger 109 under the continuous rotation of the main shaft 101. At this time, the pneumatic push rod is controlled to shrink and be in the initial state (in the initial state, the pneumatic push rod is in the fully retracted state, so that the bottom of the second shear cutter 204 is flush with the side of the conveying chamber). Thus, the pneumatic push rod and the second shear cutter 204 do not interfere with the movement of the feeding auger 109, and the rotation frequency of the feeding auger 109 and the main shaft 101 is in the specified state. The pneumatic push rod is in constant speed extension and contraction reciprocating motion to ensure the stability of the work of conveying the rubber material and cutting and kneading the rubber material.

[0033] Since fillers such as carbon black, white carbon black, calcium carbonate, etc. are usually added to rubber materials, these fillers exist in the form of particles with particle sizes ranging from a few nanometers to a few tens of microns, for example, the particle size of carbon black particles is generally 10-50 nanometers, they are mixed into the rubber matrix through a dispersion process, and if the dispersion is poor, larger agglomerated particles will be formed, which will cause uneven kneading or the use of sulfur, peroxide, etc. vulcanizing agent, and zinc oxide, stearic acid, etc. accelerator, which will remain in the rubber in the form of particles when the dispersion is not complete or the vulcanization reaction is not complete, based on this, the following improvement scheme is made: In the process of kneading the rubber material by cooperating the second shearing knife 204 with the first shearing knife 205, the pressure data of the second shearing knife 204 in the kneading process is monitored in real time by the pressure sensor close to the end of the second shearing knife 204, and whether there is uneven kneading in the rubber material is analyzed according to the pressure data.

[0034] If the pressure data detected by the pressure sensor after the second shearing knife 204 contacts the rubber material is higher than the preset value, it means that there is uneven filling material or particle accumulation generated during the vulcanization process in this area, which causes the pressure data of the second shearing knife 204 to be higher than the preset value after contact, at this time, first control the pneumatic push rod of the pressure data abnormal area to elongate to the maximum length, and then cut the rubber material in this area with the second shearing knife 204, then continue to detect the pressure data of the cut area with the pressure sensor on the second shearing knife 204, if the pressure sensor still detects that the pressure data is higher than the preset value, at this time, the electric push rod 202 drives the connecting rod 103 to move horizontally along the outer surface of the conveying chamber, and places the second shearing knife 204 on either side of the pressure data abnormal area, then drives the main shaft 101 to rotate clockwise or counterclockwise, at this time, the rubber material in the pressure abnormal area will be blocked on the surface by the second shearing knife 204, then the distance between the feeding auger 109 and the second shearing knife 204 will gradually decrease with the rotation of the main shaft 101, until the second shearing knife 204 and the feeding auger 109 are in contact with each other, thereby realizing the extrusion of the rubber material in the pressure abnormal area, then the electric push rod 202 drives the driving plate 203 to move horizontally along the outer side of the conveying chamber, so that the second shearing knife 204 moves to the opposite direction of the above adjustment scheme, and the direction of rotation of the main shaft 101 is also opposite to the direction of rotation of the above adjustment scheme, thereby realizing the effect of reciprocating extrusion and cutting of the rubber material in the pressure abnormal area.

[0035] In addition, after the rubber material completes the kneading cutting process, the rubber material enters the inside of the discharge bin 110, and the cutting knife and the rotating disc 111 are matched to cut the rubber material during the process of entering the feeding bin, so that the length of the discharged rubber material can be controlled for subsequent processing, and the surface discharge hole of the feeding plate can be designed according to actual needs, so that the shape and size of the discharged rubber material can be adjusted.

[0036] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features, as long as they are within the spirit and principles of the present application. Any modification, equivalent replacement, improvement, etc. made within the scope of the present application shall be included in the protection scope of the present application.

Claims

1. A kneading machine for pre-treatment of recycled rubber production, comprising a device housing assembly (1) and a kneading unit (2), wherein the kneading unit (2) is arranged inside the device housing, and is characterized in that: The device housing assembly (1) includes a housing (102), a main shaft (101) is rotatably provided in the inner axis area of ​​the housing (102), and a feeding auger (109) is provided on the outer surface of the main shaft (101), and the feeding auger (109) is used to transport the rubber material in conjunction with the rotation of the main shaft (101); A conveying chamber is provided inside the housing (102), a feed pipe (104) is provided on the outside of the conveying chamber, and a cooling unit is provided on the outside surface of the conveying chamber, and the cooling unit is capable of cooling the inside of the conveying chamber; The main shaft (101) sequentially passes through the housing (102), the circulation chamber, and the conveying chamber. A discharge unit is provided on the outside of the housing (102). The discharge unit is capable of receiving the rubber material in the conveying chamber and discharging it to the outside. The kneading unit (2) comprises a driving plate (203), the driving plate (203) being located on the outer surface of the conveying chamber, a receiving chamber (201) being provided inside the driving plate (203), a driving mechanism being provided inside the receiving chamber (201), and a second shearing knife (204) being provided at the output end of the driving structure.

2. The kneading machine for pretreatment of recycled rubber production according to claim 1, characterized in that: The kneading unit (2) includes a first shearing knife (205), which is arranged on the surface of the main shaft (101). The number of the first shearing knives (205) is multiple, and the multiple first shearing knives (205) are arranged in an array along the horizontal direction on the outer surface of the main shaft (101). The multiple first shearing knives (205) are annularly staggered along the outer circumferential surface of the main shaft (101), and the multiple first shearing knives (205) form a spiral channel.

3. The kneading machine for pretreatment of recycled rubber production according to claim 2, characterized in that: The output end of the driving mechanism passes through the housing (102) and is arranged inside the conveying chamber, and a sliding groove is provided on a side of the conveying chamber close to the pneumatic push rod; A sealing gasket is provided on the side where the output end of the pneumatic push rod contacts the housing (102), and a second shearing knife (204) is provided on the output end of the pneumatic push rod. The second shearing knife (204) cooperates with the first shearing knife (205) to knead and cut the rubber in the conveying chamber.

4. The kneading machine for pretreatment of recycled rubber production according to claim 1, characterized in that: Electric push rods (202) are provided on both the left and right sides of the driving plate (203), and one end of the electric push rod (202) away from the driving plate (203) is fixedly arranged on the outer surface of the housing (102), and the two electric push rods (202) can control the driving plate (203) to move horizontally along the outer surface of the housing (102); The number of the accommodating bins (201), the pneumatic push rods, and the second shearing blades (204) is set to be multiple, and each accommodating bin (201), the pneumatic push rods, and the second shearing blades (204) are distributed in an array along the horizontal direction of the driving plate (203). The number of the chutes on the conveying chamber is consistent with the number of the pneumatic push rods and the second shearing blades (204). The bottom of the driving plate always maintains a close fit with the outer surface of the conveying chamber. The number of the kneading units (2) is set to be multiple, and each of the kneading units (2) is distributed in an array along the surface circumference of the housing (102) on the surface of the conveying chamber.

5. The kneading machine for pretreatment of recycled rubber production according to claim 4, characterized in that: A pressure sensor is provided at one end of each electric push rod (202) close to the second shearing knife (204), and the electric push rod (202) can use the pressure sensor to obtain pressure data generated during the contact process between the second shearing knife (204) and the rubber material; When the electric push rod (202) is in an extended state, the distance between the second shearing knife (204) and the main shaft (101) is shortened, and the second shearing knife (204) can contact the feeding screw (109) on the main shaft (101). When the electric push rod (202) is in a retracted state, the distance between the second shearing knife (204) and the main shaft (101) is increased, and the second shearing knife (204) no longer contacts the feeding screw (109).

6. The kneading machine for pretreatment of recycled rubber production according to claim 1, characterized in that: The device housing assembly (1) further includes a support base (108), the support base (108) being located at the bottom of the housing (102), the number of the support bases (108) being set to at least two, and each support base (108) being symmetrically distributed on the left and right sides of the housing (102); A limiting frame (105) is provided on a surface of one side of the support plate close to the feed pipe (104), and the interior of the limiting frame (105) is rotatably connected to the outer side of the end of the main shaft (101). A circumferential driving device is fixedly provided on one end of the main shaft (101) close to the limiting frame (105), and the circumferential driving device can drive the main shaft (101) to rotate along the axis of the output shaft of the circumferential driving device.

7. The kneading machine for pretreatment of recycled rubber production according to claim 1, characterized in that: The discharge unit comprises a discharge bin (110), wherein the axis region of the discharge bin (110) is rotatably connected to the outer surface of the main shaft (101), and an end of the main shaft (101) close to the discharge bin (110) passes through the discharge bin (110) and is arranged inside the discharge bin (110); A discharge plate is fixedly provided on the inner wall of the discharge bin (110) on one side facing the housing (102), and a plurality of discharge holes are provided on the surface of the discharge plate. An end of the main shaft (101) close to the discharge bin (110) passes through the discharge plate and is rotatably connected to the axis of the discharge plate.

8. The kneading machine for pretreatment of recycled rubber production according to claim 1, characterized in that: A rotating disk (111) is fixedly provided on the outer surface of the main shaft (101) near the discharge bin (110), an adjusting rod is fixedly provided on the outer surface of the rotating disk (111), and a micro motor is provided inside the adjusting rod. A cutting knife (112) is fixedly provided on the output end of the micro motor, and the surface of the cutting knife (112) is in contact with the surface of the discharge plate.

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