CN211729818U

CN211729818U - Cutter speed regulating device of screw granulator

Info

Publication number: CN211729818U
Application number: CN201922494470.9U
Authority: CN
Inventors: 袁齐阳
Original assignee: Wuxi Suda New Material Technology Co ltd
Current assignee: Wuxi Suda New Material Technology Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2020-10-23
Anticipated expiration: 2029-12-31

Abstract

The utility model provides a screw granulator cutter speed adjusting device, include: the variable frequency motor is connected with the rotary knife belt wheel through a transmission belt, the rotary knife belt wheel is coaxially linked with the rotary knife transmission gear, the rotary knife frame is mounted on the outer ring of the rotary knife transmission gear, and a plurality of rotary upper knives are mounted on the rotary knife frame; the outer side of the rotary knife rest is provided with a lower knife which is positioned at the bottom of the plastic strip, the variable frequency motor is adjusted according to the actual feeding amount, so that the rotating speed control of the rotary upper knife is realized, the feeding speed can be indirectly controlled by meshing the lower feeding shaft transmission gear and the rotary knife transmission gear, and the feeding is carried out from feeding to speed regulation, so that a closed-loop control system is formed, the plastic strip is prevented from being broken due to the reduction of the feeding amount, or the plastic strip is prevented from being too thick and blocked due to the overhigh feeding amount.

Description

Cutter speed regulating device of screw granulator

Technical Field

The utility model discloses main screw granulator field especially relates to screw granulator cutter speed adjusting device.

Background

The plastic granulator used in the petroleum and petrochemical industry tends to be large-sized more and more, and has the prominent situations of tight supply and prolonged delivery period due to vigorous demand, the granulator is a unit which is suitable for secondary processing of granular products by adding different additives into resin according to different purposes and preparing the resin raw materials into the granular products through heating, mixing and extrusion molding, and the plastic granulator is widely applied to the petroleum and petrochemical industry.

Due to the fact that the development of the global petrochemical industry is extremely rapid, the demand for the plastic granulator is rapidly increased, the plastic granulator tends to be large-sized, and the requirements of users on mechanical stability, energy conservation and consumption reduction of the unit are higher and higher.

The existing screw granulator adopts manual feeding, the blanking amount is difficult to control, and the fixed-frequency cutting speed is easy to break.

SUMMERY OF THE UTILITY MODEL

The utility model provides a screw granulator cutter speed adjusting device drives the cutter cutting through the frequency conversion device control, screw granulator cutter speed adjusting device, include: the variable frequency motor is connected with the rotary knife belt wheel through a transmission belt, the rotary knife belt wheel is coaxially linked with the rotary knife transmission gear, the rotary knife frame is mounted on the outer ring of the rotary knife transmission gear, and a plurality of rotary upper knives are mounted on the rotary knife frame; the outer side of the rotary knife rest is provided with a lower knife which is positioned at the bottom of the plastic strip.

Preferably, the variable frequency motor is connected with the frequency converter control box through a control line.

Preferably, the device is further provided with a strip following grooved wheel, the strip following grooved wheel is located at the bottom of the plastic strip, and the top of the strip following grooved wheel and the top of the lower knife are located on the same horizontal line.

Preferably, a feeding mechanism is further arranged between the strip-following grooved wheel and the lower knife, and the feeding mechanism is meshed with the transmission gear of the rotary knife.

Preferably, the feeding mechanism comprises: the plastic strip feeding device comprises an upper feeding driving wheel, a lower feeding driving wheel and a lower feeding shaft driving gear, wherein the lower feeding shaft driving gear is meshed with a rotary knife driving gear, the lower feeding shaft driving gear is coaxially linked with the lower feeding driving wheel, the lower feeding driving wheel and the upper feeding driving wheel are respectively positioned below and above a plastic strip, and the lower feeding driving wheel is in master-slave rotation fit with the upper feeding driving wheel.

Preferably, the upper feeding driving wheel is installed outside the upper feeding groove shaft.

Preferably, the lower feeding driving wheel is installed outside the lower feeding groove shaft.

The utility model has the advantages that: in this patent application, adjust above-mentioned inverter motor according to actual feeding volume to realize the rotational speed control of rotatory upper slitter, and through feeding shaft drive gear and rotatory sword drive gear interlock down, can indirect control feed speed, from the feeding to the speed governing to the feeding again, constituted a closed loop control system, prevent that the feeding volume from reducing to lead to the plastic strip to break, or the too high plastic strip that leads to of feeding volume is too thick and the dead phenomenon of card.

Drawings

FIG. 1 is a schematic structural diagram of the present patent application;

in the figure, 1, a plastic strip; 2. arranging grooved wheels; 3. feeding a groove shaft; 4. a lower feeding groove shaft; 5. a lower feeding shaft transmission gear; 6. cutting; 7. rotating the upper cutter; 8. a rotary knife drive gear; 9. rotating the tool holder; 10. a rotating knife pulley; 11. a drive belt; 12. a variable frequency motor; 13. a frequency converter display screen; 14. a frequency conversion speed reduction key; 15. a variable frequency acceleration key; 16. frequency conversion frequency minus key; 17. frequency conversion frequency plus key; 18. a power line; 19. a control line; 20. a frequency converter control box; 21. a wiring terminal; 22. an upper feeding transmission wheel; 23. a lower feeding driving wheel.

Detailed Description

As shown in fig. 1, the cutter speed adjusting device of the screw pelletizer includes: the device comprises a variable frequency motor 12, a rotary knife belt wheel 10, a rotary knife transmission gear 8, a rotary knife rest 9, a rotary upper knife 7 and a lower knife 6, wherein the variable frequency motor 12 is connected with the rotary knife belt wheel 10 through a transmission belt 11, the rotary knife belt wheel 10 is coaxially linked with the rotary knife transmission gear 8, the rotary knife rest 9 is installed on the outer ring of the rotary knife transmission gear 8, and the rotary knife rest 9 is provided with the rotary upper knives 7; the outer side of the rotary knife rest 9 is provided with a lower knife 6, and the lower knife 6 is positioned at the bottom of the plastic strip 1.

The rotating speed of the rotating knife belt wheel 10 is controlled by the variable frequency motor 12, the rotating knife belt wheel 10 rotates to drive the rotating knife transmission gear 8 to rotate, so that the rotating speed of the rotating upper knife 7 on the periphery of the rotating knife transmission gear 8 is controlled, and the cutting control of the plastic strip 1 is realized.

Preferably, the variable frequency motor 12 is connected with a frequency converter control box 20 through a control line 19, and in actual operation, the output control of the frequency converter control box 20 is adjusted according to the feeding amount.

Preferably, a connection terminal 21 is arranged on the frequency converter control box 20, and the connection terminal 2 is connected to a power supply through a power line 18.

Preferably, the frequency converter control box 20 is further provided with a frequency conversion speed reduction key 14, a frequency conversion acceleration key 15, a frequency conversion frequency reduction key 16, and a frequency conversion frequency addition key 17, so as to realize manual control of the speed and the frequency conversion frequency of the frequency conversion motor, and display the rotating speed of the frequency conversion motor in real time through the frequency converter display screen 13.

Preferably, a strip-following grooved wheel 2 is further arranged, the strip-following grooved wheel 2 is located at the bottom of the plastic strip 1, and the top of the strip-following grooved wheel 2 and the top of the lower knife 6 are located on the same horizontal line.

Preferably, a feeding mechanism is further arranged between the strip-shaped grooved pulley 2 and the lower knife 6, and the feeding mechanism is meshed with the rotating knife transmission gear 8 to control the feeding speed of the feeding mechanism.

Preferably, the feeding mechanism comprises: the plastic strip cutting device comprises an upper feeding driving wheel 22, a lower feeding driving wheel 23 and a lower feeding shaft transmission gear 5, wherein the lower feeding shaft transmission gear 5 is meshed with a rotary knife transmission gear 8, the rotating speed of the lower feeding shaft transmission gear 5 directly influences the rotating speed of the lower feeding shaft transmission gear 5, so that the matching of the feeding speed and the material cutting speed of a rotary upper knife 7 is realized, the lower feeding shaft transmission gear 5 and the lower feeding driving wheel 23 are coaxially linked, the lower feeding driving wheel 23 and the upper feeding driving wheel 22 are respectively positioned below and above a plastic strip 1, the lower feeding driving wheel 23 and the upper feeding driving wheel 22 are in master-slave rotation fit, the lower feeding driving wheel 23 rotates to drive the upper feeding driving wheel 22 to rotate, and the middle plastic strip 1 can be conveyed to the lower knife 6.

Preferably, the upper feeding driving wheel 22 is installed at the outside of the upper feeding groove shaft 3.

Preferably, the lower feeding driving wheel 23 is installed at the outside of the lower feeding groove shaft 4.

The variable frequency motor is adjusted according to the actual feeding amount, so that the rotating speed control of the rotary upper knife 7 is realized, the feeding speed can be indirectly controlled through the occlusion of the lower feeding shaft transmission gear 5 and the rotary knife transmission gear 8, and the feeding is carried out from feeding to speed regulation, so that a closed-loop control system is formed, and the phenomena that the plastic strip is broken due to the reduction of the feeding amount or the plastic strip is too thick and is blocked due to the overhigh feeding amount are prevented.

Preferably, the upper feeding driving wheel 22 and the lower feeding driving wheel 23 are connected through a telescopic spring, so that plastic strips with different thicknesses and caused by uneven feeding are avoided, and complete pressing is achieved.

The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.

Claims

1. Screw granulator cutter speed adjusting device, its characterized in that: the method comprises the following steps: the cutting device comprises a variable frequency motor (12), a rotary knife belt wheel (10), a rotary knife transmission gear (8), a rotary knife rest (9), a rotary upper knife (7) and a lower knife (6), wherein the variable frequency motor (12) is connected with the rotary knife belt wheel (10) through a transmission belt (11), the rotary knife belt wheel (10) is coaxially linked with the rotary knife transmission gear (8), the rotary knife rest (9) is installed on the outer ring of the rotary knife transmission gear (8), and the rotary knife rest (9) is provided with the rotary upper knives (7); a lower knife (6) is arranged on the outer side of the rotary knife rest (9), and the lower knife (6) is positioned at the bottom of the plastic strip (1).

2. The screw pelletizer cutter speed adjusting device as set forth in claim 1, wherein: the variable frequency motor (12) is connected with a frequency converter control box (20) through a control line (19).

3. The screw pelletizer cutter speed adjusting device as set forth in claim 1, wherein: the plastic strip cutting machine is further provided with a strip following grooved wheel (2), the strip following grooved wheel (2) is located at the bottom of the plastic strip (1), and the top of the strip following grooved wheel (2) and the top of the lower knife (6) are located on the same horizontal line.

4. The screw pelletizer cutter speed adjusting device as set forth in claim 3, wherein: a feeding mechanism is also arranged between the strip sheave (2) and the lower knife (6), and the feeding mechanism is occluded with the rotating knife transmission gear (8).

5. The screw pelletizer cutter speed adjusting device as set forth in claim 4, wherein: the feeding mechanism comprises: the plastic strip feeding device comprises an upper feeding driving wheel (22), a lower feeding driving wheel (23) and a lower feeding shaft transmission gear (5), wherein the lower feeding shaft transmission gear (5) is meshed with a rotary knife transmission gear (8), the lower feeding shaft transmission gear (5) is coaxially linked with the lower feeding driving wheel (23), the lower feeding driving wheel (23) and the upper feeding driving wheel (22) are respectively positioned below and above a plastic strip (1), and the lower feeding driving wheel (23) is in master-slave rotation fit with the upper feeding driving wheel (22).

6. The screw pelletizer cutter speed adjusting device as set forth in claim 5, wherein: the upper feeding driving wheel (22) is arranged outside the upper feeding groove shaft (3).

7. The screw pelletizer cutter speed adjusting device as set forth in claim 5, wherein: the lower feeding driving wheel (23) is arranged outside the lower feeding groove shaft (4).