CN108638373A - A kind of high-efficiency environment friendly comminutor and prilling process - Google Patents

Abstract

This invention discloses a high-efficiency and environmentally friendly granulator and granulation method, which solves the problems of complex operation and low efficiency of screw granulators. It first extrudes the material, then cuts it into strips, and then granulates it, enabling simple and convenient granulation with improved efficiency and reduced labor costs. The technical solution includes: a molten material bin where the material is heated to a molten state; an extrusion device located below the molten material bin, comprising two opposing extrusion rollers that rotate in opposite directions to extrude the molten material into flakes; a strip cutting device comprising two opposing strip cutting rollers that rotate in opposite directions to cut the flake material into strips; and a granulation device comprising a granulation roller and a fixed roller that are oppositely arranged, where the strip material passes between the granulation roller and the fixed roller and is granulated by the rotation of the granulation roller.

Description

A high-efficiency environmental protection granulator and granulation method

technical field

The invention relates to the technical field of material granule production, in particular to an efficient and environment-friendly granulator and a granulation method.

Background technique

With the development of the economy, the use of granulators for the production of plastic granules is increasing, and the use of granulators is also increasing, and has become an indispensable basic production equipment for industrial and agricultural products. At present, the commonly used granulators on the market are mainly screw granulators. The screw granulators are divided into twin-screw granulators and single-screw granulators. Rolling forward, due to the shearing, compression and stirring of the screw, the material is further mixed and plasticized, the temperature and pressure gradually increase, showing a viscous flow state, and passing through the machine head at a certain pressure and temperature, and finally get Articles of desired shape.

However, the screw granulator will inevitably have high temperature during granulation, which will easily cause burns and waste of energy. In addition, some harmful gases will inevitably be discharged during the granulation process, resulting in air pollution. Secondly, the granulation power of the screw granulator is low, and the number of extruded materials is small, which wastes a lot of time, and the operation of the screw granulator is complicated and often requires multiple people to operate.

Contents of the invention

In order to overcome the shortcomings of the above-mentioned prior art, the present invention provides a high-efficiency environmental protection granulator, which first squeezes the material, then cuts it into strips, and then pelletizes it. It can simply and conveniently pelletize the material, and the pelletizing efficiency is improved. , and save manpower;

Further, the present invention adopts the following technical solutions:

A high-efficiency and environmentally friendly granulator, including a melting bin, in which the material is heated to a molten state;

The extrusion device is arranged under the melting material bin, which includes two extrusion wheels oppositely arranged, and the two extrusion wheels rotate in opposite directions to extrude the molten material into sheets;

The slitting device includes two slitting wheels arranged opposite to each other, and the two slitting wheels rotate in opposite directions to cut the sheet material into strips;

The granulating device includes a dicing wheel and a fixed wheel oppositely arranged, and the strip-shaped material passes between the dicing wheel and the fixed wheel, and is cut into granules through the rotation of the granulating wheel.

Further, the extrusion wheel is a smooth cylinder, and the two extrusion wheels are driven by the same power device.

Further, the slitting wheel is a cylindrical cylinder, and a plurality of circumferential grooves are arranged on the outer surface of the cylindrical cylinder.

Further, the grooves of the two slitting wheels are arranged alternately and misplaced, and the two slitting wheels are driven by the same power device.

Further, the granulation wheel includes a cylindrical structure, and multiple rows and rows of serrated tooth knives are arranged on the outer peripheral surface of the cylindrical structure.

Further, the fixed wheel is a cylindrical column, and the fixed wheel is fixed.

Further, an inclined baffle is set between the extrusion wheel and the bottom of the melting bin.

Further, the strip cutting device is arranged obliquely below the extruding device, and a material conveyor belt is arranged at the inclined channel between the strip cutting device and the extruding device.

Further, an air-cooling fan is arranged vertically relative to the top of the material conveyor belt to air-cool the materials transported by the material conveyor belt.

Further, a material conveying chain is arranged between the strip cutting device and the granulating device, and a water-cooling nozzle is arranged above the material conveying chain to water-cool the materials transported by the material conveying chain.

Further, a fan is installed above the side of the material conveying chain close to the pelletizing device to blow and dry the materials transported by the material conveying chain.

Further, a waste storage drawer is arranged below the material conveying chain.

Further, a discharge port is arranged obliquely below the granulation wheel.

Further, the two extruding wheels are horizontally oppositely arranged, the two slitting wheels are horizontally oppositely arranged, and the pelletizing wheel and the fixed wheel are vertically oppositely arranged.

Further, the material conveying chain is arranged horizontally.

Further, the extruding device, the strip cutting device and the granulating device are all arranged in the casing, and the casing corresponds to the extruding device, and an exhaust gas purifier is arranged between the strip cutting device.

Further, a feed hopper is arranged on the top of the melting bin, an opening and closing door is arranged between the melting bin and the extruding device, and a valve is arranged on the opening and closing door.

In order to overcome the deficiencies in the prior art, the present invention provides a granulation method of an efficient environmental protection granulator, comprising the following steps:

Add the material to the melting bin, where the material is heated to a molten state;

Open the valve between the melting bin and the extrusion device, the material enters the extrusion device, and extrudes the molten material into a sheet;

The flake material is conveyed to the strip cutting device, and is air-cooled during the conveying process, and the strip cutting device cuts the flake material into strips;

The strip material is transported to the granulation device, and is water-cooled and dried in turn during the transportation process, and the granulation device cuts the strip material into granules;

The exhaust gas generated during the working process is purified by the exhaust gas purifier.

Compared with prior art, the beneficial effect of the present invention is:

1. Compared with the screw granulator, the granulator of the present invention is simple and easy to operate, has low cost, and effectively saves manpower; and the granulator of the present invention first squeezes the material into slices, and then cuts the whole flakes through the strip cutting device. The material is cut into strips, and then the row of strips of material are pelletized by the pelletizing device. The material rods manufactured by this equipment are cut from the material based on the row, which is higher in rod number than the screw granulator, so the efficiency is higher. high.

2. The granulator of the present invention only needs to heat the material to the molten deformation state after the material enters the melting bin, instead of the viscous flow state of the existing screw granulator, which reduces the heating of the material by a considerable amount. temperature, greatly reducing energy consumption.

3. The entire device of the granulator of the present invention is equipped with a shell, which is in a semi-closed state when the material enters the melting bin, and an exhaust gas purification device is installed on the shell to effectively avoid the escape of harmful gases.

Description of drawings

The accompanying drawings constituting a part of the present application are used to provide further understanding of the present application, and the schematic embodiments and descriptions of the present application are used to explain the present application, and do not constitute improper limitations to the present application.

Fig. 1 is the structural representation of granulator of the present invention;

Fig. 2 is the top view of two extrusion wheels of extrusion device;

Fig. 3 is the top view of two slitting wheels of the slitting device;

Fig. 4 is the front view of the cooperation of the pelletizing wheel and the fixed wheel of the pelletizing device;

In the figure, 1 feed hopper, 2 melting bin, 3 extrusion wheel, 4 material conveyor belt, 5 air cooling fan, 6 exhaust gas purifier, 7 slitting wheel, 8 material conveying chain, 9 water cooling nozzle, 10 fan, 11 pelletizing device, 12 waste storage drawer, 13 outlet, 14 baffle plate, 15 pelletizing wheel, 16 fixed wheel, 17 groove, 18 shell, 19 opening and closing door.

Detailed ways

It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

As introduced in the background technology, the screw granulator in the prior art has the problems of complicated operation and low efficiency. In order to solve the above technical problems, this application proposes a high-efficiency and environmentally friendly granulator and a granulation method.

In a typical implementation of the present application, as shown in Figures 1-4, a high-efficiency environmental protection granulator is provided, including a melting bin 2, in which the material is heated to a molten state;

The extruding device is arranged under the melting material bin 2, which includes two extruding wheels 3 arranged oppositely, and the two extruding wheels 3 rotate in opposite directions to extrude the molten material into a sheet;

The slitting device comprises two slitting wheels 7 arranged oppositely, and the two slitting wheels 7 rotate in opposite directions to cut the sheet material into strips;

The pelletizing device 11 includes a pelletizing wheel 15 and a fixed wheel 16 arranged oppositely. The strip material passes between the pelletizing wheel 15 and the stationary wheel 16, and is cut into granular shapes through the pelletizing wheel 15 rotation.

The extrusion wheel 3 is a smooth cylindrical column (solid iron column can be used), and the two extrusion wheels 3 are driven by the same power unit, and are used to roll the material into a thin long sheet.

Strip cutting wheel 7 is a cylindrical column (solid iron column can be used), and a plurality of circumferential grooves 17 are arranged on the outer surface of the cylindrical column for strip cutting.

The grooves 17 of the two slitting wheels 7 are arranged alternately and misplaced, that is, the grooves of all the slitting wheels correspond to the grooves of the other slitting wheels, so that the sheet material can be fully cut into strips; the two slitting wheels 7 are formed by the same Power unit drive.

Pelletizing wheel 15 comprises cylinder structure (can adopt solid iron column), and cylinder structure outer peripheral surface is provided with multi-row multirow serrated tooth knife, is used for cutting material, and its rotating speed is adjustable; Fixed wheel 16 is cylindrical cylinder ( Can adopt smooth and hard shear-resistant metal wheel), fixed wheel 16 is fixed; The strip material is cut into granules. The pelletizing wheel 15 is driven by a power unit.

Squeezing wheel, slitting wheel and granulating wheel can be driven by independent power devices respectively, and the power device is a motor, etc.; extrusion wheel, slitting wheel and granulating wheel can also be driven by the same power device, such as belt or Transmission mechanisms such as chains transmit power to each running wheel respectively, which is a prior art, and will not be repeated here.

An inclined baffle plate 14 is arranged between the extrusion wheel 3 and the bottom of the melting bin 2 . Setting the baffle can guide the conveying of materials and prevent the accumulation of materials.

The strip cutting device is arranged obliquely below the extruding device, and a material conveyor belt 4 is arranged at the inclined channel between the strip cutting device and the extruding device, and the material conveyor belt is used to transport the long sheet-like material to the strip cutting wheel.

An air-cooling blower 5 is arranged vertically relative to the top of the material conveyor belt 4 to cool down the material transported by the material conveyor belt 4 to facilitate strip cutting. The air-cooling blower 5 adopts the existing blower to blow and cool the material on the material conveyor belt 4 .

A material conveying chain 8 is set between the strip cutting device and the granulating device, and the material conveying chain is used to transport the thin strip-shaped material to the granulating device; The transported materials are water cooled and hardened. The water-cooling nozzle 9 is communicated with the water tank through a pipeline, and it can be supplied with water by a water pump, which is a prior art, and will not be repeated here.

A blower fan 10 is arranged above the side of the material conveying chain 8 close to the pelletizing device 11 to blow and dry the materials transported by the material conveying chain 8 . The blower fan can be an existing blower fan, which can blow the material on the material conveying chain. This is the prior art and will not be repeated here.

The extruding device, the strip cutting device and the pelletizing device are all arranged in the housing 18, and the housing 18 corresponds to the extruding device and the strip cutting device, and the exhaust gas purifier 6 is arranged between them.

A waste material storage drawer 12 is arranged below the material conveying chain 8 for collecting dropped materials for easy recycling. A sealing strip or the like may be arranged between the waste storage drawer and the housing, which acts as a seal when the waste storage drawer is closed.

A discharge port 13 is arranged obliquely below the pelletizing wheel 15, and the processed materials are exported and stored through the discharge port.

Two extruding wheels 3 are arranged horizontally relative to each other, two slitting wheels 7 are arranged horizontally oppositely, and pelletizing wheels 15 and fixed wheels 16 are vertically arranged oppositely. The material conveying chain 8 is arranged horizontally, and the material conveying chain transports the strip material made by the strip cutting device to the pelletizing device, and the pelletizing wheel is used for pelletizing it.

A feed hopper 1 is arranged on the top of the melting bin 2, and an opening and closing door 19 is arranged between the melting bin 2 and the extrusion device. The opening and closing door is provided with a valve. After the material is heated to a molten state in the melting bin, the valve is opened. Make the material enter the extrusion device. A temperature-controlled heating device is installed in the melting bin to heat the incoming material. By adjusting the heating temperature of the heating device, the material can be heated to a molten state; the melting bin and the heating device can use existing heating materials in the granulation field installation.

In another typical implementation of the present application, a granulation method of a high-efficiency environmental protection granulator is provided, comprising the following steps:

Add the material to the melting bin 2, and the material is heated to a molten state in the melting bin 2;

Open the valve between the melting bin 2 and the extrusion device, the material enters the extrusion device, and extrudes the molten material into a sheet;

The flake material is conveyed to the strip cutting device, and is air-cooled during the conveying process, and the strip cutting device cuts the flake material into strips;

The strip material is transported to the granulation device, and is water-cooled and dried in turn during the transportation process, and the granulation device cuts the strip material into granules;

The exhaust gas generated during the working process is purified by the exhaust gas purifier 6 .

In order to enable those skilled in the art to understand the technical solution of the present application more clearly, the technical solution of the present application will be described in detail below in conjunction with specific embodiments.

Prepare a modifier for PE and SBS mixed modified asphalt. The preparation process of the modifier is as follows: first mix the materials evenly, and then add them to the feeding hopper. After adding, adjust the temperature of the melting bin until the materials are just in a molten state After the temperature is completely melted, open the valve of the melting bin leading to the extrusion wheel.

The extrusion wheel presses the material into strips and flakes, and sends it to the cutting wheel through the material conveyor belt. During the conveying process, an air-cooled fan initially cools the material to facilitate cutting. After the strip cutting is completed, the strip-shaped material is transported to the pelletizing wheel by the material conveying chain. During the conveying process, the material is cooled to a hardened state through water cooling, and then the surface moisture of the strip-shaped material is blown and dried by the fan next to the pelletizing wheel. , to facilitate the completion of pelletizing. Material that falls off the conveyor belt during the granulation process falls into the waste storage drawer for easy recycling.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (10)

1. a kind of high-efficiency environment friendly comminutor, characterized in that including melting material storehouse, material is heated to molten state in melting material storehouse；

Pressurizing unit is set to below melting material storehouse comprising two extruding wheels being oppositely arranged, two extruding wheels rotate in opposite directions will melting State material squeezes slabbing；

Slitting device comprising sheet material is cut into strip by two slitting wheels being oppositely arranged, the two opposite rotations of slitting wheel；

Pellet device comprising the pelletizing wheel and fast pulley being oppositely arranged, strip-shaped materials pass through between pelletizing wheel and fast pulley, It is cut into through the rotation of pelletizing wheel granular.

2. high-efficiency environment friendly comminutor as described in claim 1, characterized in that the extruding wheel be the cylindric cylinder of smooth surface, two Extruding wheel is driven by same power plant；The extruding wheel and melts inclined baffle is set between bin bottom.

3. high-efficiency environment friendly comminutor as described in claim 1, characterized in that the slitting wheel is cylindric cylinder, cylindric A plurality of circumferential recess is arranged in cartridge outer surface；The groove of two slitting wheels alternately shifts to install, and two slitting wheels are by same power plant Driving.

4. high-efficiency environment friendly comminutor as described in claim 1, characterized in that the pelletizing wheel includes column structure, cylinder knot Multiple rows of multiple row zigzag serrated knife is arranged in structure peripheral surface；The fast pulley is cylindric cylinder, and fast pulley is fixed.

5. high-efficiency environment friendly comminutor as described in claim 1, characterized in that the slitting device is set to pressurizing unit obliquely downward It is square, material conveyer belt is set at the ramp way between slitting device and pressurizing unit；It is vertically opposite above material conveyer belt Air-cooling fan is set, is gas-cooled to the material of material conveyer belt transport.

6. high-efficiency environment friendly comminutor as described in claim 1, characterized in that be arranged between the slitting device and pellet device Material carrier chain, material carrier chain top are correspondingly arranged water cooling nozzle, and water cooling is carried out to the material of material carrier chain transport；It is described Wind turbine is arranged close to the top of pellet device side in material carrier chain, and drying is blowed to the material of material carrier chain transport； Waste storage drawer is set below the material carrier chain.

7. high-efficiency environment friendly comminutor as claimed in claim 6, characterized in that two extruding wheel levels are oppositely arranged, two slitting wheels Level is oppositely arranged, and pelletizing wheel and fast pulley are oppositely arranged vertically；The material carrier chain horizontal layout.

8. high-efficiency environment friendly comminutor as described in claim 1, characterized in that pelletizing wheel obliquely downward is correspondingly arranged discharging Mouthful；Feed hopper is arranged in the melting material the top of the warehouse, open and close door is arranged between melting material storehouse and pressurizing unit, open and close door is provided with valve.

9. high-efficiency environment friendly comminutor as described in claim 1, characterized in that the pressurizing unit, slitting device and pelletizing dress It sets and may be contained in shell, shell, which corresponds to, is arranged Waste gas purifying machine between pressurizing unit, slitting device.

10. such as the prilling process of claim 1-9 any one of them high-efficiency environment friendly comminutors, characterized in that including following step Suddenly：

Material is added to melting material storehouse, material is heated to molten state in melting material storehouse；

The valve between melting material storehouse and pressurizing unit is opened, material enters pressurizing unit, and molten state material is squeezed slabbing；

Sheet material is gas-cooled through being delivered to slitting device in transmission process, and sheet material is cut into strip by slitting device；

Strip-shaped materials carry out water cooling, drying successively through being delivered to pellet device in transmission process, and pellet device is by strip-shaped materials It is cut into granular；

The exhaust gas generated in the course of work carries out purified treatment via Waste gas purifying machine.