阅读说明：本技术 一种复配抗氧剂造粒成型工艺 (Granulation molding process for compound antioxidant ) 是由 唐朋飞 张跃 于 2020-07-08 设计创作，主要内容包括：本发明属于造粒成型技术领域,具体的说是一种复配抗氧剂造粒成型工艺；该工艺包括如下步骤：S1：将混料机升温至80～98℃,预热10～15min；将聚丙烯和丁苯像胶投入混料机搅拌3～5min,得到初步混合料；S2：向S1步骤中制备的混合料中加入亚磷酸酯类抗氧剂和炭黑粉末,并在120～135℃的真空环境下搅拌均匀,自然冷却后得到塑料混合浆料；S3：将S2步骤制备的塑料混合浆料以加压的方式送入到螺旋仓内,再通过单螺杆输送至挤出机挤出模头中挤出成型；S4：采用挤出机上设置的冷热循环装置对挤出模头内部进行冷却挤出造粒,输送至挤出机挤出成型；防止挤压模头挤出的多个颗粒产物较软,进而导致多个颗粒产物产生挤压变形的现象,形成造粒的成型均匀程度。(The invention belongs to the technical field of granulation molding, and particularly relates to a granulation molding process of a compound antioxidant; the process comprises the following steps: s1: heating the mixer to 80-98 ℃, and preheating for 10-15 min; putting the polypropylene and the styrene-butadiene rubber into a mixer, and stirring for 3-5 min to obtain a preliminary mixture; s2: adding a phosphite antioxidant and carbon black powder into the mixture prepared in the step S1, uniformly stirring the mixture in a vacuum environment at the temperature of 120-135 ℃, and naturally cooling the mixture to obtain plastic mixed slurry; s3: conveying the plastic mixed slurry prepared in the step S2 into a spiral bin in a pressurizing mode, and conveying the plastic mixed slurry into an extrusion die head of an extruder through a single screw to be extruded and molded; s4: cooling, extruding and granulating the interior of the extrusion die head by adopting a cold-hot circulating device arranged on the extruder, and conveying the granules to the extruder for extrusion molding; the phenomenon that a plurality of particle products extruded by the extrusion die head are softer and then extruded and deformed is further avoided, and the molding uniformity of granulation is formed.)

1. A granulation molding process of a compound antioxidant is characterized in that: the process comprises the following steps:

s1: heating the mixer to 80-98 ℃, and preheating for 10-15 min; slowly stirring the polypropylene and the styrene-butadiene rubber in a mixer for 3-5 min, and quickly stirring for 5-10 min after the polypropylene and the styrene-butadiene rubber are completely melted to obtain a preliminary mixture;

S2: adding a phosphite antioxidant and carbon black powder into the mixture prepared in the step S1, uniformly stirring the mixture in a vacuum environment at the temperature of 120-135 ℃, and naturally cooling the mixture to the temperature of 45-60 ℃ to obtain plastic mixed slurry;

s3: the plastic mixed slurry prepared in the step S2 is fed into a spiral bin (3) through a hopper of an extruder in a pressurizing mode, and then is conveyed into an extrusion die head of the extruder through a single screw (4) for extrusion molding;

s4: cooling, extruding and granulating the interior of the extrusion die head by adopting a cold-hot circulating device (6) arranged on the extruder, and conveying the granules to the extruder for extrusion molding;

the extruder comprises a fixed frame (1), a driving device (2), a spiral bin (3), a single screw (4), an extrusion die head (5) and a cold-hot circulating device (6); a driving device (2) is arranged on the side wall above the fixed frame (1), and a spiral bin (3) is arranged on the fixed frame (1); a single screw (4) is rotatably arranged in the spiral bin (3), and one end of the single screw (4) is connected with the output end of the driving device (2); the single screw (4) is provided with a spiral blade (41); a material hopper is arranged at the upper end of the spiral bin (3), and an extrusion die head (5) is arranged at the end part of the spiral bin (3); the extrusion die head (5) is uniformly provided with a plurality of forming holes (51), and a cooling cavity (52) is formed in the extrusion die head (5); a heating cavity (31) is formed in the spiral bin (3), and a plurality of heat conducting grooves (32) are formed in the upper cavity wall of the spiral bin (3); the cold and hot circulating device (6) comprises a hot water tank (61), a cold water tank (62), a water inlet pipe (63), a water outlet pipe (64), a square guide cavity (65) and an air guide hose (66); the hot water tank (61) is fixedly arranged above the spiral bin (3), two side walls of the hot water tank (61) are respectively connected with a water inlet pipe (63) and a water outlet pipe (64), one end of the water inlet pipe (63) is communicated with the upper end of the cooling cavity (52), and the upper end of the heating cavity (31) at one end of the water outlet pipe (64) is communicated; a water inlet pipe (63) and a water outlet pipe (64) are also connected to the two sides of the cold water tank (62), the water inlet pipe (63) is communicated with the lower end of the cooling cavity (52), and the water outlet pipe (64) is communicated with the lower end of the heating cavity (31); a square guide cavity (65) is inserted in the heat conducting grooves (32), and an air guide hose (66) is inserted in the square guide cavity (65); a plurality of exhaust holes (661) are uniformly formed in the air guide hose (66) positioned in the square guide cavity (65), and the air guide hose (66) is communicated with the side wall of the hot water tank (61); and water supply pumps are arranged on the hot water tank (61) and the cold water tank (62).

2. The granulation molding process of the compound antioxidant as claimed in claim 1, which is characterized in that: a sealing extrusion block (7) is arranged in a stepped groove (651) formed in the upper end of the square guide cavity (65) in a sliding mode, and the bottom end of the sealing extrusion block (7) is connected with a magnet block (8); an electromagnet is arranged on the stepped groove (651) of the square guide cavity (65), and a rubber spring (9) is arranged at the upper end of the electromagnet; the top end of the rubber spring (9) is connected with the bottom end face of the sealing extrusion block (7); extrusion grooves (71) are formed in two sides of the sealed extrusion block (7), and the extrusion grooves (71) are in extrusion clamping contact with the air guide hose (66); when the electromagnet is electrified, the electromagnet and the magnet block (8) are opposite magnetic poles.

3. The granulation molding process of the compound antioxidant as claimed in claim 2, wherein the granulation molding process comprises the following steps: the upper thread of the sealing extrusion block (7) is connected with an external thread column (10), and the bottom end of the external thread column (10) is rotatably connected with a scraping strip (11) through a rotating column; the scraping strips (11) are symmetrically arranged on two sides of the spiral blade (41) arranged on the single screw rod (4), and the scraping strips (11) are arranged in the square guide cavity (65) in a sliding mode.

4. The granulation molding process of the compound antioxidant as claimed in claim 3, wherein the granulation molding process comprises the following steps: the inner side wall of the scraping strip (11) is provided with a frosted film (12), and the frosted film (12) is in rotating contact with the outer wall of the spiral blade (41); a guide slot hole (111) is formed in the scraping strip (11), and the guide slot hole (111) is communicated with the side wall of the frosted film (12); the external thread column (10) is of a cavity structure, and the external thread column (10) of the cavity structure is communicated with the guide groove hole (111); the cavity structure is characterized in that the external thread column (10) is communicated with high-pressure cleaning fluid through an external air duct.

5. The granulation molding process of the compound antioxidant as claimed in claim 4, wherein the granulation molding process comprises the following steps: the outer wall of the sanding film (12) is provided with a sanding ball (121), and the sanding ball (121) is in a steel wire mesh shape; and the outer wall of the frosted film (12) is provided with liquid seepage micropores (122).

6. The granulation molding process of the compound antioxidant as claimed in claim 5, which is characterized in that: the forming hole (51) is internally provided with an internal thread, and the forming hole (51) is internally connected with an extrusion forming pipe (13) in a threaded manner; the extrusion molding pipe (13) is made of a heat-conducting metal material.

Technical Field

The invention belongs to the technical field of granulation molding, and particularly relates to a granulation molding process of a compound antioxidant.

Background

During the manufacturing, processing, storing and using processes of plastics, under the action of factors such as light, oxygen, heat and the like, oxidative degradation often occurs, so that the plastics are aged, and the strength and the appearance of the plastics are influenced. To prolong the lifetime of the macromolecular material of the plastic, and to inhibit or retard the oxidative degradation of the polymer, antioxidants are generally used.

The composite antioxidant is compounded by two or more of main antioxidant and auxiliary antioxidant, and generates synergistic effect to exert excellent performance. With the high functionalization and high added value of general resins in the plastic industry and the expansion of the application range of composite materials and engineering plastics, antioxidants are required to have the properties of high efficiency, low toxicity, good compatibility, no precipitation and the like. The composite antioxidant has high antioxidant activity and low volatility, is particularly suitable for high-temperature processing, is an excellent plastic antioxidant and hydrolysis stabilizer, can effectively inhibit the degradation of plastics by adding a small amount of the composite antioxidant, and represents the latest level of the current antioxidant technology.

When the existing granulation forming process taking the compound antioxidant as the additive carries out granulation, because the mixed raw materials of the granulation products are extruded and formed by an extruder, because the extruder extrudes a plurality of particle products with certain temperature, and the particle products are softer, when the particle products fall into a storage tank, the phenomenon of impact extrusion deformation is easy to occur, and further the forming uniformity degree of granulation is formed.

Disclosure of Invention

In order to make up for the defects of the prior art, the invention provides a compound antioxidant granulation molding process which is mainly used for solving the problem that when the existing granulation molding process taking a compound antioxidant as an additive is used for granulation, as the mixed raw materials of the granulation product are extruded and molded by an extruder, and a plurality of granular products extruded by the extruder have certain temperature and are softer, when the plurality of granular products fall into a storage tank, the phenomenon of impact extrusion deformation is easy to occur, and the molding uniformity degree of granulation is further formed.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a granulation molding process of a compound antioxidant, which comprises the following steps:

s1: heating the mixer to 80-98 ℃, and preheating for 10-15 min; slowly stirring the polypropylene and the styrene-butadiene rubber in a mixer for 3-5 min, and quickly stirring for 5-10 min after the polypropylene and the styrene-butadiene rubber are completely melted to obtain a preliminary mixture;

s2: adding a phosphite antioxidant and carbon black powder into the mixture prepared in the step S1, uniformly stirring the mixture in a vacuum environment at the temperature of 120-135 ℃, and naturally cooling the mixture to the temperature of 45-60 ℃ to obtain plastic mixed slurry;

S3: conveying the plastic mixed slurry prepared in the step S2 into a spiral bin through a material hopper of an extruder in a pressurizing mode, and conveying the plastic mixed slurry into an extrusion die head of the extruder through a single screw to be extruded and molded;

s4: cooling, extruding and granulating the interior of the extrusion die head by adopting a cold-hot circulating device arranged on the extruder, and conveying the granules to the extruder for extrusion molding; the granular materials extruded from the extrusion die head can be firstly cooled through the cooling cavity arranged in the extrusion die head, and heated hot water in the cooling cavity can be recycled into the spiral bin to heat the mixed slurry in the spiral bin; the phenomenon that a plurality of particle products extruded by the extrusion die head are softer so as to cause extrusion deformation of the plurality of particle products is prevented, and the molding uniformity of granulation is further formed;

the extruder comprises a fixing frame, a driving device, a spiral bin, a single screw, an extrusion die head and a cold-hot circulating device; the side wall above the fixed frame is provided with a driving device, and the fixed frame is provided with a spiral bin; a single screw is rotatably arranged in the spiral bin, and one end of the single screw is connected with the output end of the driving device; the single screw is provided with a spiral blade; the upper end of the spiral bin is provided with a material hopper, and the end part of the spiral bin is provided with an extrusion die head; the extrusion die head is uniformly provided with a plurality of forming holes, and a cooling cavity is formed in the extrusion die head; a heating cavity is formed in the spiral bin, and a plurality of heat conducting grooves are formed in the upper cavity wall of the spiral bin; the cold and hot circulating device comprises a hot water tank, a cold water tank, a water inlet pipe, a water outlet pipe, a square guide cavity and an air guide hose; the hot water tank is fixedly arranged above the spiral bin, a water inlet pipe and a water outlet pipe are respectively connected to two side walls of the hot water tank, one end of the water inlet pipe is communicated with the upper end of the cooling cavity, and the heating cavity at one end of the water outlet pipe is communicated with the upper end of the water outlet pipe; a water inlet pipe and a water outlet pipe are also connected to the two sides of the cold water tank, the water inlet pipe is communicated with the lower end of the cooling cavity, and the water outlet pipe is communicated with the lower end of the heating cavity; a square guide cavity is inserted in the plurality of heat conducting grooves, and an air guide hose is inserted in the square guide cavity; a plurality of exhaust holes are uniformly formed in the air guide hose positioned in the square guide cavity, and the air guide hose is communicated with the side wall of the hot water tank; water supply pumps are arranged on the hot water tank and the cold water tank;

When the granulator is used for granulation, an operator puts mixed slurry into the spiral bin through the material hopper, the rotation of the single screw can drive the spiral blade to input the mixed slurry in the spiral bin to the end part of the extrusion die head, at the moment, the water supply pump can inject hot water in the hot water tank into the heating cavity through the drain pipe of the hot water tank, the hot water in the heating cavity can heat the mixed slurry in the spiral bin, granulation is convenient to form, and meanwhile the hot water in the heating cavity can be discharged into the cold water tank through the drain pipe at the bottom end for refrigeration; then cold water in the cold water tank enters the cooling cavity through the water inlet pipe, when cold water circularly flowing in the cooling cavity cools the extrusion die head, the cold water in the cooling cavity is heated and enters the hot water tank through the water inlet pipe arranged above the cooling cavity, and meanwhile, mixed slurry heated in the spiral bin is guided into the hot water tank through the air guide hose arranged on the square guide cavity, so that the circularly flowing water in the hot water tank can be heated, and the heating cavity can be conveniently heated; through the arranged cold and hot circulating equipment, the mixed slurry in the spiral bin can be heated, and meanwhile, hot gas generated by the mixed slurry in the spiral bin can be injected into the hot water tank through the air guide hose, so that the heat can be conveniently circulated and flowed, the granular products extruded by the extruder are more uniform, and the forming rate of the granular products is improved; the spiral heat-conducting grooves are correspondingly formed according to the length of the spiral bin, so that the hot gas in the spiral bin can be conveniently discharged.

Preferably, a sealing extrusion block is arranged in a stepped groove formed in the upper end of the square guide cavity in a sliding manner, and the bottom end of the sealing extrusion block is connected with a magnet block; an electromagnet is arranged on the stepped groove of the square guide cavity, and a rubber spring is arranged at the upper end of the electromagnet; the top end of the rubber spring is connected with the bottom end face of the sealing extrusion block; extrusion grooves are formed in two sides of the sealed extrusion block and are in extrusion clamping contact with the air guide hose; when the electromagnet is electrified, the electromagnet and the magnet block are opposite magnetic poles; when the spiral bin works, the square guide cavity needs to be intermittently sealed when mixed slurry in the spiral bin needs to be heated; when the square guide cavity needs to be sealed, an operator can control the electromagnet to be electrified through the controller, the magnet block can be downwards adsorbed by the magnetic adsorption force of the electromagnet, the seal extrusion block slides downwards due to the fact that the magnet block is arranged on the seal extrusion block, at the moment, the rubber spring is in a compression state, the extrusion groove formed in the seal extrusion block can extrude and seal the air guide hose, hot air in the spiral bin can not be discharged, and therefore heating operation of mixed slurry in the spiral bin can be conveniently conducted; when the air guide hose is required to be opened, the controller controls the electromagnet to lose power, the rubber spring is recovered to push the sealing extrusion block upwards, the sealing extrusion block breaks away from the air guide hose to extrude, the hot gas gathered in the spiral bin is convenient to discharge, the phenomenon that the hot gas is too much gathered in the spiral bin to cause explosion hazard is prevented, meanwhile, the hot gas in the spiral bin can enter the hot water tank through the air guide hose, the cold water flowing circularly of the hot water tank is heated, and the heat source body is convenient to recycle.

Preferably, the upper thread of the sealing extrusion block is connected with an external thread column, and the bottom end of the external thread column is rotatably connected with a scraping strip through a rotating column; the scraping strips are symmetrically arranged on two sides of the spiral blade arranged on the single screw rod, and the scraping strips are arranged in the square guide cavity in a sliding manner; when the spiral bin cleaning machine works, when the spiral bin needs to be cleaned, the spiral bin is in a sealing state, and therefore the spiral blades in the spiral bin are difficult to clean; an operator can rotate the external thread column to enable the external thread column to drive the two side walls of the spiral blade of the scraping strip to move through the rotating column, when the side walls of the scraping strip are attached to the side surfaces of the spiral blade, the rotation of the spiral blade can enable the scraping strip to carry out rotating scraping operation on mixed slurry adhered to the outer wall of the scraping strip, and the phenomenon that the spiral blade is difficult to clean due to the mixed slurry adhered to the spiral blade is effectively prevented; scrape the strip simultaneously and set up in the direction and lead the intracavity, be convenient for will be located square lead the mixed thick liquids that bonds on the spiral leaf under the chamber and strike off, prevent that mixed thick liquids from gathering the below that the chamber was led to the direction, lead to the direction to lead the chamber to be difficult to carry out the exhaust phenomenon with the hot gas that produces in the screw storehouse, and then influence the safe operation of extruder, simultaneously because a large amount of hot gases of spiral storehouse cohesion, can produce the extrusion force to extrusion die under the rotation of spiral leaf, lead to extrusion die to produce the phenomenon of damage.

Preferably, the inner side wall of the scraping strip is provided with a frosted film, and the frosted film is in rotating contact with the outer wall of the spiral blade; a guide slot hole is formed in the scraping strip and is communicated with the side wall of the frosted film; the external thread column is of a cavity structure, and the external thread column of the cavity structure is communicated with the guide slot hole; the external threaded column of the cavity structure is communicated with high-pressure cleaning fluid through an external air duct; the during operation, when scraping the mixed thick liquids that the strip bonds to the both sides of helical blade and strike off, operating personnel can inject high-pressure washing liquid into the external screw thread post of cavity structure through the high-pressure pump, highly compressed washing liquid enters into the guide slot downthehole, and highly compressed washing liquid can enter into the dull polish membrane through the guide slot hole and scrape between the strip outer wall, make the dull polish membrane produce the outer wall that the inflation laminated to the helical blade, and then improved the effect of scraping the strip inside wall to scraping the thick liquids that the helical blade outer wall bonds, can reduce the wearing and tearing effect of helical blade to scraping the strip outer wall simultaneously.

Preferably, the outer wall of the sanding film is provided with a sanding ball, and the sanding ball is in a steel wire mesh shape; the outer wall of the frosted film is provided with liquid seepage micropores; when the scraping device works, when the abrasive film is attached to the side wall of the spiral blade under the extrusion of high-pressure cleaning liquid, the steel wire mesh-shaped abrasive balls arranged on the abrasive film can carry out efficient scraping operation on the caking mixed slurry adhered on the spiral blade; meanwhile, high-pressure cleaning liquid can be sprayed into the side wall of the spiral blade through the liquid seepage micropores, so that the side wall of the spiral blade can be cleaned conveniently.

Preferably, the forming hole is internally provided with an internal thread, and the internal thread of the forming hole is connected with an extrusion forming pipe; the extrusion molding pipe is made of a heat-conducting metal material; when the extrusion die head is required to extrude granular products with different diameters, the cold-hot circulating device stops supplying water, an operator can take the extrusion forming pipe in threaded connection on the extrusion die head out of the forming hole, and then the extrusion forming pipe with the inner diameter being the same as the diameter of the granular products is in threaded connection with the forming hole, so that the extrusion die head can extrude the granular products with different diameters; simultaneously because the extrusion molding pipe sets up to heat conduction metal material, and then the cold water of the circulation flow in the cooling chamber of being convenient for can carry out cooling operation to the intraductal extrusion's of extrusion granule result.

The invention has the following beneficial effects:

1. according to the invention, the cooling cavity arranged in the extrusion die head can firstly cool the granular materials extruded in the extrusion die head, and heated hot water in the cooling cavity can be recycled into the spiral bin to heat the mixed slurry in the spiral bin; the phenomenon that a plurality of particle products extruded by the extrusion die head are softer and then the plurality of particle products are extruded and deformed is prevented, and the molding uniformity of granulation is further formed.

2. According to the invention, through the arranged cold and hot circulating equipment, the mixed slurry in the spiral bin can be heated, and meanwhile, hot gas generated by the mixed slurry in the spiral bin can be injected into the hot water tank through the air guide hose, so that the heat can be conveniently circulated and flowed, the granular products extruded by the extruder are more uniform, and the forming rate of the granular products is improved.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a flow chart of a method of the present invention;

FIG. 2 is a perspective view of the extruder of the present invention;

FIG. 3 is a cross-sectional view of the extruder of the present invention;

FIG. 4 is an enlarged view of a portion of the invention at A in FIG. 3;

in the figure: the device comprises a fixed frame 1, a driving device 2, a spiral bin 3, a heating cavity 31, a heat conducting groove 32, a single screw 4, a spiral blade 41, an extrusion die head 5, a forming hole 51, a cooling cavity 52, a cold and hot circulating device 6, a hot water tank 61, a cold water tank 62, a water inlet pipe 63, a water outlet pipe 64, a square guide cavity 65, a stepped groove 651, an air guide hose 66, an air outlet hole 661, a sealing extrusion block 7, an extrusion groove 71, a magnet block 8, a rubber spring 9, an external threaded column 10, a scraping strip 11, a guide groove hole 111, a frosted film 12, a frosted ball 121, a liquid seepage micropore 122 and an extrusion forming pipe 13.

Detailed Description

The granulation molding process of a compounded antioxidant according to an embodiment of the present invention will be described below with reference to fig. 1 to 4.

As shown in figures 1-4, the granulation and molding process of the compound antioxidant comprises the following steps:

s1: heating the mixer to 80-98 ℃, and preheating for 10-15 min; slowly stirring the polypropylene and the styrene-butadiene rubber in a mixer for 3-5 min, and quickly stirring for 5-10 min after the polypropylene and the styrene-butadiene rubber are completely melted to obtain a preliminary mixture;

s2: adding a phosphite antioxidant and carbon black powder into the mixture prepared in the step S1, uniformly stirring the mixture in a vacuum environment at the temperature of 120-135 ℃, and naturally cooling the mixture to the temperature of 45-60 ℃ to obtain plastic mixed slurry;

s3: the plastic mixed slurry prepared in the step S2 is fed into a spiral bin 3 through a hopper of an extruder in a pressurizing mode, and then is conveyed into an extruder extrusion die head through a single screw 4 for extrusion molding;

s4: cooling, extruding and granulating the interior of the extrusion die head by using a cold-hot circulating device 6 arranged on the extruder, and conveying the granules to the extruder for extrusion molding; the granular materials extruded from the extrusion die head 5 can be firstly cooled by the cooling cavity 52 formed in the extrusion die head 5, and heated hot water in the cooling cavity 52 can be recycled into the spiral bin 3 to heat the mixed slurry in the spiral bin 3; the phenomenon that a plurality of particle products extruded by the extrusion die head 5 are soft and further extrusion deformation is caused to the plurality of particle products is prevented, and the molding uniformity degree of granulation is further formed;

The extruder comprises a fixed frame 1, a driving device 2, a spiral bin 3, a single screw 4, an extrusion die head 5 and a cold-hot circulating device 6; a driving device 2 is arranged on the upper side wall of the fixed frame 1, and a spiral bin 3 is arranged on the fixed frame 1; a single screw 4 is rotatably arranged in the spiral bin 3, and one end of the single screw 4 is connected with the output end of the driving device 2; the single screw rod 4 is provided with a spiral blade 41; a material hopper is arranged at the upper end of the spiral bin 3, and an extrusion die head 5 is arranged at the end part of the spiral bin 3; the extrusion die head 5 is uniformly provided with a plurality of molding holes 51, and the extrusion die head 5 is internally provided with a cooling cavity 52; a heating cavity 31 is formed in the spiral bin 3, and a plurality of heat conducting grooves 32 are formed in the upper cavity wall of the spiral bin 3; the cold and hot circulating device 6 comprises a hot water tank 61, a cold water tank 62, a water inlet pipe 63, a water outlet pipe 64, a square guide cavity 65 and an air guide hose 66; the hot water tank 61 is fixedly arranged above the spiral bin 3, a water inlet pipe 63 and a water outlet pipe 64 are respectively connected to two side walls of the hot water tank 61, one end of the water inlet pipe 63 is communicated with the upper end of the cooling cavity 52, and one end of the water outlet pipe 64 is communicated with the upper end of the heating cavity 31; a water inlet pipe 63 and a water outlet pipe 64 are also connected to the two sides of the cold water tank 62, the water inlet pipe 63 is communicated with the lower end of the cooling cavity 52, and the water outlet pipe 64 is communicated with the lower end of the heating cavity 31; a square guide cavity 65 is inserted in the plurality of heat conducting grooves 32, and an air guide hose 66 is inserted in the square guide cavity 65; a plurality of exhaust holes 661 are uniformly arranged on the air guide hose 66 positioned in the square guide cavity 65, and the air guide hose 66 is communicated with the side wall of the hot water tank 61; water supply pumps are arranged on the hot water tank 61 and the cold water tank 62;

When the granulator is used for granulation, an operator puts mixed slurry into the spiral bin 3 through the material hopper, the rotation of the single screw 4 drives the spiral blade 41 to input the mixed slurry in the spiral bin 3 to the end part of the extrusion die head 5, at the moment, hot water in the hot water tank 61 is injected into the heating cavity 31 through the drain pipe 64 of the hot water tank 61 by the water supply pump, the mixed slurry in the spiral bin 3 is heated by the hot water in the heating cavity 31, granulation molding is facilitated, and meanwhile, the hot water in the heating cavity 31 is discharged into the cold water tank 62 through the drain pipe 64 at the bottom end for refrigeration; then, cold water in the cold water tank 62 enters the cooling cavity 52 through the water inlet pipe 63, when cold water circularly flowing in the cooling cavity 52 cools the extrusion die head 5, the cold water in the cooling cavity 52 is heated and enters the hot water tank 61 through the water inlet pipe 63 arranged above the cooling cavity 52, and meanwhile, mixed slurry heated in the spiral bin 3 is guided into the hot water tank 61 through the air guide hose 66 arranged on the square guide cavity 65, so that circularly flowing water in the hot water tank 61 can be heated, and the heating cavity 31 can be conveniently heated; through the arranged cold and hot circulating equipment, the mixed slurry in the spiral bin 3 can be heated, and meanwhile, hot gas generated by the mixed slurry in the spiral bin 3 can be injected into the hot water tank 61 through the air guide hose 66, so that the heat can flow circularly, the granular products extruded by the extruder are more uniform, and the forming rate of the granular products is improved; the number of the heat conducting grooves 32 can be correspondingly arranged according to the length of the spiral bin 3, so that the hot gas in the spiral bin 3 can be conveniently discharged.

As an embodiment of the present invention, a sealing extrusion block 7 is slidably disposed in a stepped groove 651 formed at the upper end of the square guide cavity 65, and a magnet block 8 is connected to the bottom end of the sealing extrusion block 7; an electromagnet is arranged on the stepped groove 651 of the square guide cavity 65, and a rubber spring 9 is arranged at the upper end of the electromagnet; the top end of the rubber spring 9 is connected with the bottom end face of the sealing extrusion block 7; two sides of the sealed extrusion block 7 are provided with extrusion grooves 71, and the extrusion grooves 71 are in extrusion clamping contact with the air guide hose 66; when the electromagnet is electrified, the electromagnet and the magnet block 8 are opposite magnetic poles; when the device works, the square guide cavity 65 needs to be intermittently sealed when mixed slurry in the spiral bin 3 needs to be heated; when the square guide cavity 65 needs to be sealed, an operator can control the electromagnet to be electrified through the controller, the magnet block 8 can be downwards adsorbed by the magnetic adsorption force of the electromagnet, the magnet block 8 is arranged on the seal extrusion block 7, so that the seal extrusion block 7 slides downwards, at the moment, the rubber spring 9 is in a compressed state, the air guide hose 66 can be extruded and sealed by the extrusion groove 71 formed in the seal extrusion block 7, hot air in the spiral bin 3 can not be discharged, and the heating operation of mixed slurry in the spiral bin 3 is facilitated; when the air guide hose 66 needs to be opened, the controller controls the electromagnet to lose power, the rubber spring 9 can push the sealing extrusion block 7 upwards through elastic recovery, the sealing extrusion block 7 breaks away from the air guide hose 66 for extrusion, the hot gas gathered in the spiral bin 3 is convenient to discharge, the phenomenon that the hot gas is too much gathered in the spiral bin 3 to cause explosion hazard is prevented, meanwhile, the hot gas in the spiral bin 3 can enter the hot water tank 61 through the air guide hose 66, the cold water circulating and flowing in the hot water tank 61 is heated, and the heat source body is convenient to recycle.

As an embodiment of the invention, the upper thread of the sealing extrusion block 7 is connected with an external thread column 10, and the bottom end of the external thread column 10 is rotatably connected with a scraping strip 11 through a rotating column; the scraping strips 11 are symmetrically arranged on two sides of the spiral blade 41 arranged on the single screw rod 4, and the scraping strips 11 are slidably arranged in the square guide cavity 65; when the cleaning device works, when the spiral bin 3 needs to be cleaned, the spiral bin 3 is in a sealing state, and the spiral blades 41 in the spiral bin 3 are difficult to clean; an operator can rotate the external threaded column 10, so that the external threaded column 10 drives the two side walls of the spiral blade 41 of the scraping strip 11 to move through the rotating column, when the side wall of the scraping strip 11 is attached to the side surface of the spiral blade 41, the rotation of the spiral blade 41 can enable the scraping strip 11 to rotationally scrape off mixed slurry adhered to the outer wall of the scraping strip 11, and the phenomenon that the spiral blade 41 is difficult to clean due to the mixed slurry adhered to the spiral blade 41 is effectively prevented; scrape the strip 11 simultaneously and set up and lead the intracavity in the direction, be convenient for will be located square guide cavity 65 under the mixed thick liquids that bond on the spiral leaf 41 strike off, prevent mixed thick liquids gathering to the direction and lead the below in chamber, lead to the direction to lead the chamber to be difficult to carry out the discharged phenomenon with the hot gas that produces in the spiral bin 3, and then influence the safe operation of extruder, simultaneously because a large amount of hot gases of spiral bin 3 cohesion, can produce the extrusion force to extrusion die 5 under the rotation of spiral leaf 41, lead to extrusion die 5 to produce the phenomenon of damaging.

As an embodiment of the present invention, the inner side wall of the scraping strip 11 is provided with a frosted film 12, and the frosted film 12 is in rotational contact with the outer wall of the spiral blade 41; a guide slot hole 111 is formed in the scraping strip 11, and the guide slot hole 111 is communicated with the side wall of the frosted film 12; the external threaded column 10 is of a cavity structure, and the external threaded column 10 of the cavity structure is communicated with the guide slot hole 111; the external threaded column 10 of the cavity structure is communicated with high-pressure cleaning fluid through an external air duct; the during operation, when scraping the mixed thick liquids that strip 11 bondd to the both sides of helical blade 41 and strike off, operating personnel can inject high-pressure washing liquid into the external screw thread post 10 of cavity structure through the high-pressure pump, highly compressed washing liquid enters into guide slot hole 111, and highly compressed washing liquid can enter into dull polish membrane 12 and scrape between the 11 outer walls of strip through guide slot hole 111, make dull polish membrane 12 produce the outer wall that the inflation laminated to helical blade 41, and then improved and scraped the effect of scraping the thick liquids that strip 11 inside wall bondd to helical blade 41 outer wall, can reduce the wearing and tearing effect of helical blade 41 to scraping 11 outer walls simultaneously.

As an embodiment of the present invention, the outer wall of the sanding film 12 is provided with sanding balls 121, and the sanding balls 121 are in a steel wire mesh shape; the outer wall of the frosted film 12 is provided with liquid seepage micropores 122; when the scraping device works, when the abrasive film 12 is attached to the side wall of the spiral blade 41 under the extrusion of high-pressure cleaning liquid, the steel wire mesh-shaped abrasive balls 121 arranged on the abrasive film 12 can carry out efficient scraping operation on the caking mixed slurry adhered on the spiral blade 41; meanwhile, the high-pressure cleaning liquid can be sprayed into the side wall of the spiral blade 41 through the liquid seepage micropores 122, so that the side wall of the spiral blade 41 can be cleaned conveniently.

As an embodiment of the present invention, the forming hole 51 is internally provided with an internal thread, and the extrusion forming pipe 13 is connected to the forming hole 51 in the internal thread; the extrusion molding pipe 13 is made of a heat-conducting metal material; when the extrusion die head 5 is required to extrude granular products with different diameters, the cold-hot circulating device 6 stops supplying water at the moment, an operator can take the extrusion forming pipe 13 in threaded connection with the extrusion die head 5 out of the forming hole 51, and then the extrusion forming pipe 13 with the same inner diameter as the diameter of the granular product is in threaded connection with the forming hole 51, so that the extrusion die head 5 can extrude the granular products with different diameters; meanwhile, the extrusion molding pipe 13 is made of heat-conducting metal, so that cold water which circularly flows in the cooling cavity 52 can cool granular products extruded and formed in the extrusion molding pipe 13.

The specific working process is as follows:

when the granulator is required to be used for granulation, an operator puts the mixed slurry into the spiral bin 3 through the material hopper, the rotation of the single screw rod 4 can drive the spiral blade 41 to input the mixed slurry in the spiral bin 3 into the end part of the extrusion die head 5, at the moment, the water supply pump can inject hot water in the hot water tank 61 into the heating cavity 31 through the water discharge pipe 64 of the hot water tank 61, the hot water in the heating cavity 31 can heat the mixed slurry in the spiral bin 3, granulation molding is further facilitated, and meanwhile, the hot water in the heating cavity 31 can be discharged into the cold water tank 62 through the water discharge pipe 64 at the bottom end for refrigeration; then, cold water in the cold water tank 62 enters the cooling cavity 52 through the water inlet pipe 63, when cold water circulating in the cooling cavity 52 cools the extrusion die head 5, the cold water in the cooling cavity 52 is heated and enters the hot water tank 61 through the water inlet pipe 63 arranged above the cooling cavity 52, and the outer wall of the particle product cooled by the extrusion die head 5 is locally hardened and then discharged from the forming hole 51.

In the description of the present invention, it is to be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from its scope. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.