CN214136840U

CN214136840U - Grain device is cut in preparation of high concentration master batch usefulness

Info

Publication number: CN214136840U
Application number: CN202022973038.0U
Authority: CN
Inventors: 李彦波; 李宗禹; 蒋庆赛; 刘善添
Original assignee: Shijiazhuang Jindi Chemical Technology Co ltd
Current assignee: Shijiazhuang Jindi Chemical Technology Co ltd
Priority date: 2020-12-11
Filing date: 2020-12-11
Publication date: 2021-09-07
Anticipated expiration: 2030-12-11

Abstract

The utility model provides a grain device is cut in preparation of high concentration master batch usefulness, includes the aircraft nose template that communicates, has transmission pivot chain interface and cutter with double screw extruder discharge gate, with aircraft nose template sealing connection's eager grain chamber casing, at the adjustable speed driving motor who cuts grain chamber casing external setting, driving motor passes through the blade holder pivot and is connected with the cutter, cuts grain chamber casing below and is provided with the discharge gate, and discharge gate department is provided with air-assisted transportation mechanism, and the key is: a spray cooling mechanism is arranged in the grain cutting cavity shell. The beneficial effects of the utility model are that through increasing spray cooling mechanism, can let and cut the cooling that the grain directly accepted the water smoke, avoid glutinous grain condition to take place. Meanwhile, the spray cooling mechanism has an adjustable spraying function, the spraying amount is adjustable from 0-6000 ml/h, the spraying granularity is fine, the spraying is uniform, an annular cooling zone can be formed in the granulating cavity, the granulating temperature is effectively reduced, the carrying water amount after the materials are cooled and evaporated is very little, and a dewatering device is not required to be added.

Description

Grain device is cut in preparation of high concentration master batch usefulness

Technical Field

The utility model relates to a macromolecular material makes with twin-screw extrusion equipment machinery technical field, concretely relates to twin-screw extrusion processing preparation high concentration master batch is with cutting grain device structure.

Background

The double-screw extruder is a main device for mixing, dispersing and plasticizing high polymer materials, and can complete mixing, melting, plasticizing and dispersing of the materials by heating of an extruder barrel, rotation of a screw and mixing and shearing of a threaded element, and then the materials are extruded and molded through a die head.

The die of the twin-screw extruder is generally classified into two types, a strand discharge and a hot-cut discharge. To materials with high tensile strength and good toughness, a brace discharge design is generally adopted. After the material is formed by the bracing machine head, the material is shaped by water bath or air cooling and continuously enters a granulator by traction.

When a double-screw device is adopted to prepare high-degree color master batches, flame-retardant master batches and other functional high-filling master batch materials, the materials contain fillers with a high proportion, so that the tensile strength of the materials is reduced, and the toughness is deteriorated. The material is easy to break if the material is drawn for a long distance, so the design of a grinding surface hot-cutting discharging probe is generally adopted. The material is directly cut into granules after passing through a mouth die of the hot cutting machine head, so that the defect that the material cannot be formed by traction is overcome. And conveying the cut materials to a cooling bin through a wind power pipeline to finish a shaping process.

In the existing grinding surface and granulating mode, a metal blade is tightly attached to a machine head template, and because the temperature of a die head and the discharging temperature are very high, the blade works at high temperature for a long time, so that passivation and abrasion are easy to occur, particles are adhered, and the section is not smooth. Simultaneously because utilize the forced air cooling mode of stereotyping, in shorter transportation process, the cooling effect is relatively poor, and the material adheres to grain cutting chamber, pipeline inner wall or, pipeline corner easily, increases the clearance work load, seriously influences production efficiency and product quality. The above conditions can be improved by using the water mist cooling mode of eccentric grain cutting, underwater ground grain cutting and water ring cooling ground surface hot cutting mode. However, the device has the defects of complex structure, complex maintenance and replacement of parts, high water consumption and additional dehydration process. The method is not suitable for materials with high requirements on controlling the water content, such as flame-retardant master batches, fiber-grade master batches and the like.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a carry out refrigerated eager grain device to cutting a grain with forced cooling's mode, this device is applicable to high viscosity water demand auxiliary cooling's product very much, also is applicable to the hydrophobic material after closing water jet equipment simultaneously.

The technical scheme that the utility model adopted is, a grain device of cutting that high concentration master batch preparation was used, include with double screw extruder discharge gate intercommunication, the aircraft nose template that has transmission pivot chain interface and cutter, with aircraft nose template sealing connection's eager grain chamber casing, at the adjustable speed driving motor who cuts grain chamber casing external setting, adjustable speed driving motor passes through the blade holder pivot and is connected with the cutter, cuts grain chamber casing below and is provided with the discharge gate, and discharge gate department is provided with pneumatic conveying mechanism, and the key is: a spray cooling mechanism is arranged in the grain cutting cavity shell.

The cutter comprises a rotary cutter holder fixedly connected with a cutter holder rotating shaft and a group of blades fixed on the rotary cutter holder.

The number of the blades is set to be 3-4.

The edge of the blade and the die plate of the machine head form an included angle of 45-60 degrees.

The blade is a ceramic blade.

The spray cooling mechanism consists of 2-8 nozzles.

The beneficial effects of the utility model are that, through increasing spray cooling mechanism, can let and cut the cooling that the grain material directly accepted water smoke, increase cooling efficiency, avoid glutinous grain condition to take place. Meanwhile, the spray cooling mechanism has an adjustable spraying function, the spraying amount is adjustable from 0-6000 ml/h, the spraying granularity is fine, the spraying is uniform, an annular cooling zone can be formed in the granulating cavity, the granulating temperature is effectively reduced, the carrying water amount after the materials are cooled and evaporated is very little, and a dewatering device is not required to be added. The ceramic material is applied, so that the temperature resistance of the blade exceeds more than 1000 ℃, and exceeds more than twice of the temperature of 300-600 ℃ of the steel material blade, the surface anti-adhesion effect is good, and the phenomena of thermal deformation and blade edge abrasion during use are overcome. Meanwhile, the quick-open design is adopted, and the replacement is extremely convenient.

Drawings

Fig. 1 is a schematic structural view of the dicing device of the present invention.

Fig. 2 is a front view of a die plate.

Fig. 3 is a schematic sectional view taken along line a-a in fig. 2.

In the attached drawing, 1 is a transmission rotating shaft chain interface, 2-1 is a rotary cutter holder, 2-2 is a blade, 3 is a machine head template, 4 is a grain cutting cavity shell, 5 is a speed-adjustable driving motor, 6 is a cutter holder rotating shaft, 7 is a discharge hole, and 8 is a spray cooling mechanism.

Detailed Description

Referring to fig. 1, fig. 2 and fig. 3, a grain device of cutting that high concentration master batch preparation was used, include with double screw extruder discharge gate intercommunication, the aircraft nose template 3 that has transmission pivot chain interface 1 and cutter, with aircraft nose template 3 sealing connection's grain chamber casing 4 of cutting, but the adjustable speed driving motor 5 that sets up outside grain chamber casing 4 of cutting, but adjustable speed driving motor 5 is connected with the cutter through blade holder pivot 6, grain chamber casing 4 below is provided with discharge gate 7, discharge gate 7 department is provided with pneumatic conveying mechanism, the key is: a spray cooling mechanism 8 is provided at an upper portion in the pellet chamber housing 4. The spray cooling mechanism 8 consists of 2-8 nozzles. Through increasing spray cooling mechanism 8, can let and cut the cooling that the grain directly accepted the water smoke, the cutter is also cooled off simultaneously in addition, has avoided the glutinous sword condition to take place. Meanwhile, the spray cooling mechanism 8 has an adjustable spraying function, the spraying amount is adjustable from 0-6000 ml/h, the spraying granularity is fine, the spraying is uniform, an annular cooling zone can be formed in the granulating cavity, the granulating temperature is effectively reduced, the carrying water amount after the materials are cooled and evaporated is very little, and a dewatering device is not required to be added.

The cutter comprises a rotary cutter holder 2-1 fixedly connected with a cutter holder rotating shaft 6 and a group of blades 2-2 fixed on the rotary cutter holder 2-1. The tool apron with a rotary structure is mainly used for granulating on a hot cutting machine head, and is particularly designed for preventing high-concentration master batches from being sticky.

The extrusion speed of the materials, the rotating speed of the blades and the number of the blades are accurately calculated according to design requirements, the number of the blades 2-2 is set to be 3-4, the thickness of the slices and the uniformity of the particle size of each slice are more orderly, and the product packaging requirements are met.

The edge part of the blade 2-2 and the nose template 3 are arranged at an included angle of 45-60 degrees, so that the abrasion can be further reduced.

The blade 2-2 is a ceramic blade. The ceramic blade has the temperature resistance of more than 1000 ℃ and more than twice of the temperature of 300-600 ℃ of the steel blade, has good surface anti-adhesion effect, and overcomes the phenomena of thermal deformation and blade wear during use.

The utility model discloses when specifically using, in the extrusion material was sent into this device through transmission pivot chain interface 1, the cutter passed through the drive of adjustable speed driving motor 5 and blade holder pivot 6 down the rotation cut the grain, and the granule that cuts off passes through the 7 ejection of compact of discharge gate after the water smoke cooling of spray cooling mechanism 8, send out the next production link of entering by pneumatic conveying mechanism behind the ejection of compact. The utility model has the advantages of simple structural design, aircraft nose template 3 and eager grain chamber casing 4 adopt open design, when needing to dismantle the maintenance, only need dismantle blade holder pivot 6 and rotatory blade holder 2-1 get off, aircraft nose template 3 and eager grain chamber casing 4 are dismantled through the spiral simultaneously and can be realized, the simple operation.

Claims

1. The utility model provides a grain device of cutting that high concentration master batch preparation was used, include and communicate with double screw extruder discharge gate, aircraft nose template (3) that have transmission pivot chain interface (1) and cutter, grain chamber casing (4) of cutting with aircraft nose template (3) sealing connection, but the adjustable speed driving motor (5) of grain chamber casing (4) outer setting cut, but adjustable speed driving motor (5) are connected with the cutter through blade holder pivot (6), it is provided with discharge gate (7) to cut grain chamber casing (4) below, discharge gate (7) department is provided with pneumatic conveying mechanism, its characterized in that: a spray cooling mechanism (8) is arranged in the grain cutting cavity shell (4).

2. The pelletizing device that high concentration master batch preparation used of claim 1, characterized in that: the cutter comprises a rotary cutter holder (2-1) fixedly connected with a cutter holder rotating shaft (6) and a group of blades (2-2) fixed on the rotary cutter holder (2-1).

3. The pelletizing device that high concentration master batch preparation used of claim 2, characterized in that: the number of the blades (2-2) is set to be 3-4.

4. The pelletizing device that high concentration master batch preparation used of claim 2, characterized in that: the edge of the blade (2-2) and the nose template (3) are arranged at an included angle of 45-60 degrees.

5. The pelletizing device that high concentration master batch preparation used of claim 2, characterized in that: the blade (2-2) is a ceramic blade.

6. The pelletizing device that high concentration master batch preparation used of claim 1, characterized in that: the spray cooling mechanism (8) consists of 2-8 nozzles.