CN2436295Y

CN2436295Y - Submerged granule cutter

Info

Publication number: CN2436295Y
Application number: CN00250301U
Authority: CN
Inventors: 任辰宗; 陈军; 殷文魁; 尚忠涛; 姜旭华; 熊伟; 马金星
Original assignee: NANFENG ELECTROMECHANICAL EQUI
Current assignee: NANFENG ELECTROMECHANICAL EQUI
Priority date: 2000-08-31
Filing date: 2000-08-31
Publication date: 2001-06-27
Anticipated expiration: 2010-08-31

Abstract

The utility model relates to a submerged granulator used for producing polyester chips in the petrochemistry and chemical fibre industry. A front material leading axle, a rear material leading axle and a hobbing knife are driven by three different motors, wherein, the hobbing knife is provided with a cutting edge 952 mm long. A guide groove bracket is installed on a sliding bearing of a base through a bearing. The structure is matched with a control system provided with a man-machine interface, so that the length of the polyester chips produced by the submerged granulator can be set and adjusted within limits. The 952 mm length of the cutting edge also causes the integral structure of the submerged granulator to be correspondingly widened, so that the number of cut thread strands can be increased to over 99, and production capacity is increased to over 1.5 times of the existing model.

Description

Underwater pelletizer

The utility model relates to a kind of underwater pelletizer that is used for petrochemical industry, the production of chemical fibre industry polyester slice.

Known underwater pelletizer, by gathering sill, support, gear-box, air-channel system, water circuit system, cutting chamber, cutting chamber cap, preceding draw material axle, rolling cut cutter, stationary knife, after draw and expect that axle, pelletizing motor, belt pulley, base, electric-control system etc. form.By a pelletizing motor by belt pulley driven gear case, through after the gear shift speed change by the shaft coupling output of three different rotating speeds, drive respectively the rolling cut cutter, preceding draw the material axle and after draw the material axle.Draw before the various outer diameter material axle and after draw the material axle with opposite direction rotation and have identical linear velocity, draw the material function with realization; The rolling cut cutter with before draw the material axle, after draw the material axle rotational line speed keep certain speed ratio relation, to cut out the polyester slice of certain-length.The high-temperature fusion shape polyester thread bar that squeezes out from end of extruded band falls into gathering sill, in the traveling process of thread bar in gathering sill by water cooling, then preceding drawn material axle and after draw the material axle clamp and hold, traction enters cutting chamber, and the polyester thread bar of soft outer hard state is cut into polyester slice in being cooled between the rolling cut cutter of stationary knife and rotation.Gathering sill can be that fulcrum is moved horizontal level to the rack shaft, so that cutting chamber is safeguarded.The cutting edge length of this kind underwater pelletizer rolling cut cutter is up to 680mm, and its cutting thread bar number is up to 66, because the cutting tool length restriction makes the production capacity of underwater pelletizer be restricted; In addition; because the gear ratio of gear-box is constant; make draw before this underwater pelletizer material axle, after draw material axle and rolling cut cutter rotational line speed keep constant speed ratio to concern; thereby the slice length that cuts out is a fixed value all the time, can not satisfy the market demand of polyester slice multi-sizeization and miniaturization.

The purpose of this utility model is that a kind of underwater pelletizer that can cut the plurality of specifications polyester slice is provided.

Technical solution of the present utility model is, cutting chamber built-in before draw the material axle by umbrella gear box with before draw the material motor and be connected, after draw the material axle by another bevel gear with after draw and expect that motor is connected, the rolling cut cutter then is connected to positioning motor by belt pulley; The cutting edge length of rolling cut cutter is 952mm; The gathering sill support is installed on the sliding bearing of base by bearing.

The utility model has the advantages that; since draw before having adopted the material axle, after draw the structure that material axle and rolling cut cutter are used different motor transmissions respectively; and be equipped with rolling cut cutter speed control system with man-machine interface; make the polyester slice length of underwater pelletizer production to set within the specific limits and to regulate; again because the cutting edge length of rolling cut cutter is increased to 952mm; the overall structure of underwater pelletizer is also corresponding widens, thereby makes its cutting thread bar number rise to more than 99.Like this, drawing on an equal basis under material speed and the section specification condition, the production capacity of underwater pelletizer is existing more than 1.5 times of type.Because integrally-built widening, gathering sill of the present utility model is moved to change into laterally by original dead axle and moves, and the equipment that makes is being changed cutter, adjusts pelletizing length and drawn not only convenient but also safety when safeguarding such as material gap.

Fig. 1 is the overall structure figure of the utility model prior art;

Fig. 2 is overall structure figure of the present utility model;

Fig. 3 is three motor scheme of installations of the utility model;

Fig. 4 is the utility model gathering sill supporting structure schematic diagram.

Draw before the utility model is controlled pelletizing motor 12 of former usefulness simultaneously material axle 8, after draw material axle 11 and rolling cut cutter 9 and use three motors instead and control respectively, gear-box 3 is originally changed into two

umbrella gear box

16,17, draw and draw material axle 11 after material motor I 18 drives by bevel type gear case I 16, draw and draw material axle 8 before material motor II 19 drives by bevel type gear case II 17 and sprocket wheel 20, make various outer diameter before draw material axle 8 and after draw the linear velocities rotation that the material axle is 11 identical by size, direction is opposite, thereby the material function is drawn in realization; Pelletizing motor 3 drives rolling cut cutter 9 by belt pulley 13, to realize the pelletizing function.After adopting this separated motor drive mechanism,, can regulate slice length within the specific limits by changing rolling cut cutter 9 and the speed ratio relation of drawing the rotational line speed of expecting axle 8,11.The rotating speed of pelletizing motor 12 is with a Frequency Converter Control; The rotating speed that draws material motor I 18 and draw material motor II 19 is with another Frequency Converter Control.One personal-machine dialog interface is set in electric-control system 15, and this man-machine interface is made up of keyboard and LCDs, by RS-485 interface and Programmable Logic Controller communication, is used for slice length is shown, sets and edits.According to the slice length that sets, Programmable Logic Controller calculates corresponding rolling cut cutter 9 and the rotational line speed speed ratio relation of

drawing material axle

8,11 automatically, and realize that by this speed ratio relation pelletizing motor 12 rotating speeds are to drawing the real-time tracking of

material motor

18,19 rotating speeds, to guarantee all to cut out the polyester slice that sets length value in any drawing under the material speed.Gathering sill 1 is fixed on the support 2, and two linear motion bearings 21 of support 2 bottom it are installed on the sliding axle 22 of base 14.Like this, gathering sill 1 can move forward and backward trippingly.Be pushed forward to the position and arrive the operating position, this moment, underwater pelletizer can normally move; Shift the position backward onto and arrive maintenance position, can safeguard underwater pelletizer this moment, as changing cutting tool, adjust the pelletizing gap or drawing material gap or the like.As shown in FIG., gathering sill 1, support 2, air-channel system 4, water circuit system 5, cutting chamber 6, pelletizing motor 12, umbrella gear box II 17, umbrella gear box I 16, electric-control system 15 etc. all are located on the base 14, preceding draw material axle 8, after draw material axle 11, rolling cut cutter 9 and stationary knife 10 and be installed in the cutting chamber 6 and cover with cover plate 7.

The course of work of the present utility model is as follows: draw and draw material axle 11 after material motor I 18 drives by bevel type gear case I 16, draw and draw material axle 8 before material motor II 19 drives by bevel type gear case II 17 and sprocket wheel 33, make various outer diameter before draw material axle 8 and after draw the linear velocities rotation that the material axle is 11 identical by size, direction is opposite, thereby the material function is drawn in realization; Pelletizing motor 12 drives rolling cut cutter 9 by belt pulley 13, to realize the pelletizing function.The slice length that the Programmable Logic Controller basis is set on man-machine interface (2.5mm～4.0mm), automatically control the rotating speed of rolling cut cutter 9 by frequency converter, and realize that by the speed ratio that calculates relation pelletizing motor 12 rotating speeds are to drawing the real-time tracking of

material motor

18,19 rotating speeds, to guarantee all to cut out the polyester slice that sets length value in any drawing under the material speed.The high-temperature fusion shape polyester thread bar that squeezes out from end of extruded band falls into gathering sill 1, in the traveling process of thread bar in gathering sill 1 by water cooling, then preceding drawn material axle 11 and after draw 8 clampings of material axle, traction enters cutting chamber 6, and the polyester thread bar of soft outer hard state is cut into polyester slice in being cooled between the rolling cut cutter 9 of stationary knife 10 and rotation.Gathering sill 1 can move backward to maintenance position, so that underwater pelletizer is safeguarded.

Claims

1. underwater pelletizer; by gathering sill, support, air-channel system, pelletizing motor, water circuit system, cutting chamber, after draw the material axle, preceding material axle, rolling cut cutter, stationary knife, base, the electric-control systems etc. of drawing are formed; it is characterized in that; cutting chamber built-in before draw material axle and expect that motor is connected with before drawing by umbrella gear box; after draw material axle by another bevel gear with after draw and expect that motor is connected, the rolling cut cutter then is connected to positioning motor by belt pulley.

2. underwater pelletizer according to claim 1 is characterized in that, the cutting edge length of rolling cut cutter is 952mm.

3. underwater pelletizer according to claim 1 is characterized in that the gathering sill support is installed on the sliding axle of base by bearing.