CN207736564U - A screw conveying mechanism of a twin-screw granulator - Google Patents

Abstract

The utility model discloses a spiral conveying mechanism of double helix granulator, include the base and install the motor chamber on the base, the motor chamber is connected with the compounding device, the compounding device is connected with ejection of compact barrel, compounding device top is provided with preheating device, preheating device top slope is installed and is thrown the material device, it includes pay-off casing and the vertical hopper of installing at pay-off casing table wall to throw the material device, the inside axostylus axostyle that is provided with of pay-off casing, just be provided with eccentric wheel paddle and monolithic propeller blade on the pole body of axostylus axostyle, main shaft pole and toper double screw to and the spiral conveying device that preceding axostylus axostyle connection combination formed, guaranteed that the stirring is even and the ease is abundant, the life of.

Description

A screw conveying mechanism of a twin-screw granulator

technical field

The utility model relates to the conveying field of a granulator, in particular to a screw conveying mechanism of a double-screw rod granulator.

Background technique

The twin-screw granulator is mainly used for the filling, blending, modification, addition, chlorination, processing of polypropylene and superabsorbent resin of rubber, plastic and engineering resin. The barrel and screw of the parallel twin-screw granulator are all according to Building block principle design, different combinations can be made according to needs, using electric heating and water cooling to automatically control the temperature of the barrel, and equipped with forced feeding, vacuum exhaust and non-stop screen changing devices, twin-screw adopts frequency conversion speed regulation, AC motor Drive or DC speed regulation, DC motor drive, deceleration and twin-screw transmission in the same box, compact size, using a safety coupling with shear pins, which can protect the screw and transmission box from being damaged due to overload :

For example, the application number is 201420416036.3, and the patent name is a utility model/utility model patent for a screw conveyor mechanism of a twin-screw granulator:

It passes through the turntable, the first motor linked with the turntable, the second motor linked with the first screw, and the third motor linked with the second screw. The first screw and the second screw are axially fixed and circumferentially rotated. It is set on the same side of the turntable, so that it can be stirred evenly during the screw conveying.

However, there are following defects in the existing method of utilizing stretch film to pack goods:

(1) Due to the certain shape transformation process of the material in the granulator, it needs to have a certain molten state when it enters the twin-screw screw conveying device. The existing screw conveying devices all form a molten state in the barrel, so that Increase the delivery pressure of the delivery mechanism;

(2) Make the molten state have as few internal bubbles as possible. The first screw and the second screw can only be fully stirred by increasing their stirring time. The structure of the screw is too simple, and it is easy to appear during the flow of stirring. Dead angle, the material located in the middle of the screw is difficult to be fully stirred, the intermittent propeller blades make the axial force of the screw too large, which is easy to cause damage to the screw, difficult to guarantee the quality of extrusion, and the helical state of the screw is also not conducive escape of gas.

Contents of the invention

In order to overcome the shortcomings of the existing technical solutions, the utility model provides a screw conveying mechanism of a double-screw granulator, which can effectively solve the problems raised by the background technology.

The technical scheme that the utility model solves its technical problem adopts is:

A screw conveying mechanism for a twin-screw granulator, comprising a base and a motor chamber installed on the base, the motor chamber is connected with a mixing device, the mixing device is connected with a discharge barrel, the mixing The top of the feeding device is provided with a preheating device, and the top of the preheating device is obliquely installed with a feeding device. The feeding device includes a feeding shell and a hopper vertically installed on the surface wall of the feeding shell. A shaft, and the shaft of the material shaft is provided with an eccentric wheel blade and a single propeller blade;

The inside of the mixing device is provided with a spindle rod, and the shaft body of the spindle rod is provided with mixing feeding blades and outgassing stirring blades, and the spindle rod is fixedly connected with a conical twin-screw rod arranged inside the discharge barrel, so One end of the conical twin-screw is fixedly connected with a bevel gear disc, and the bevel gear disc is fixedly connected with a front shaft rod, and the shaft body of the front shaft rod is provided with a flat spiral blade, and the front shaft rod is arranged on the discharge shaft. The interior of the rear material cavity provided inside the machine barrel.

Further, the preheating device includes a material receiving ring pipe, a pipe gasket is arranged inside the connection between the material receiving ring pipe and the feeding housing, and a bearing is arranged in the middle of the pipe gasket, and a pipe gasket is arranged inside the material receiving ring pipe. Has eddy current winding.

Further, the outgassing stirring paddle includes an inner ring piece, and an outer ring piece set on the inner ring piece, and the surface of the outer ring piece is evenly provided with slit holes, and the slit holes are connected with a ring through the inner escape hole. A cut ring set on the inner ring sheet.

Further, the eccentric wheel blades are elliptical disks, and the eccentric directions of two adjacent eccentric wheel blades are opposite.

Further, an inner frame ring is provided at the joint between the spindle rod and the conical twin-screw rod.

Further, the end of the material shaft and the bearing are connected together.

Compared with the prior art, the beneficial effects of the utility model are:

(1) The screw conveying mechanism of the present utility model is composed of a main shaft rod, a conical twin-screw rod, and a front shaft rod. At the same time, the material is fully cut and stirred by the cutting ring on the outgassing stirring blade, and the gas in the molten material is cut through, and enters the hole through the inner escape hole, and passes through the vacuum of the barrel itself. The outgassing device exhausts, and at the same time, the hole itself has the function of shearing and guiding air, and at the same time makes the stirring more uniform. After the initial melting state, the material is intercepted and exhausted, preventing the material with gas from entering the barrel, thereby A large pressure is formed in the barrel, which reduces the quality of the extruded material and forms a partition. After entering the barrel, the material is squeezed and conveyed by the conical twin-screw, and finally cut through the bevel gear plate, intercepted, and finally The material is conveyed through the flat spiral blade, and the chamber opening of the rear material chamber is smaller than the chamber installed by the conical twin-screw, so that the material is temporarily detained on the conical twin-screw, so as to achieve the purpose of sufficient mixing;

(2) The feeding device and mixing device of the utility model provide a premise guarantee for the screw conveying mechanism. The eccentric wheel blades in the feeding device fully stir and shear the material, making the material particles smaller and convenient for subsequent processing , conveyed to the preheating device through a single propeller blade, and the passing material can be preheated quickly through eddy current winding, and the ceramic material receiving ring tube can effectively transfer heat, thereby reducing the heating of the barrel itself State, prolong the service life of the screw rod.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is the structural representation of outgassing stirring paddle of the present utility model;

Fig. 3 is a structural schematic diagram of the bevel gear disc of the present invention.

Labels in the figure:

1-base; 2-motor room; 3-discharging barrel; 4-preheating device; 5-mixing device; 6-feeding device;

301-inner ring frame; 302-conical twin-screw; 303-bevel gear disc; 304-flat spiral blade; 305-front shaft; 306-rear cavity;

401-receiving ring tube; 402-pipe washer; 403-eddy current winding; 404-bearing;

501-spindle rod; 502-mixed feeding paddle; 503-outgassing stirring paddle; 5031-outer ring piece; 5032-inner ring piece; 5033-opening hole;

601-feeding shell; 602-motor; 603-hopper; 604-material shaft; 605-eccentric wheel blade; 606-support frame; 607-single propeller blade.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

As shown in Figure 1, Figure 2 and Figure 3, the utility model provides a screw conveying mechanism of a twin-screw granulator, including a base 1, and a motor chamber 2 installed on the base 1, the motor chamber 2 A mixing device 5 is connected, and the mixing device 5 is connected with a discharge barrel 3. The top of the mixing device 5 is provided with a preheating device 4, and the top of the preheating device 4 is obliquely equipped with a feeding device 6. The feeding device 6 includes a feeding housing 601 and a hopper 603 vertically installed on the surface wall of the feeding housing 601, the inside of the feeding housing 601 is provided with a material shaft 604, and the shaft of the material shaft 604 is provided with an eccentric Wheel blade 605 and single propeller blade 607;

The inside of the mixing device 5 is provided with a main shaft 501, and the shaft of the main shaft 501 is provided with a mixing feeding paddle 502 and an outgassing stirring paddle 503, and the main shaft 501 is fixedly connected with the discharge barrel 3 The conical twin-screw 302 provided inside, one end of the conical twin-screw 302 is fixedly connected with a bevel gear disc 303, and the bevel gear disc 303 is fixedly connected with a front shaft 305, and the shaft of the front shaft 305 is provided with There is a flat spiral blade 304, and the front shaft 305 is arranged inside the rear chamber 306 provided inside the discharge barrel 3;

The screw conveying device formed by connecting the main shaft 501, the conical twin-screw 302, and the front shaft 305 ensures uniform stirring and sufficient outgassing, prolongs the service life of the screw, and sets mixed feeding on the main shaft 501 The blades 502 and the outgassing stirring blades 503 are used to initially mix and melt the materials entering the barrel, and at the same time, the cutting ring 5035 on the outgassing stirring blades 503 is used to fully cut and stir the materials, and the molten materials are The gas in the barrel is cut through, enters the hole 5033 through the escape hole 5032, and exhausts through the vacuum escape device of the barrel itself. At the same time, the hole 5033 itself has the function of shearing and guiding gas, and at the same time makes the stirring more uniform. After the initial melting state, the material is intercepted and exhausted to avoid the gas-carrying material from entering the barrel, thereby forming a large pressure in the barrel, reducing the quality of the extruded material, and forming a partition, after entering the barrel. The material is extruded and transported by the conical twin-screw 302, and finally cut and intercepted by the bevel gear disc 303, and then discharged and transported by the flat spiral blade 304. The chamber opening of the rear material chamber 306 is smaller than that of the conical twin-screw 302 installed chamber, so that the material is temporarily detained on the conical twin-screw 302, so as to achieve the purpose of sufficient mixing;

The preheating device 4 includes a material receiving ring pipe 401, a pipe washer 402 is arranged inside the joint between the material receiving ring pipe 401 and the feeding housing 601, and a bearing 404 is arranged in the middle of the pipe washer 402, and the material receiving ring 402 is provided with a bearing 404. The vortex winding 403 is arranged inside the coil pipe 401, and the feeding device 6 and the mixing device 4 provide a premise guarantee for the screw conveying mechanism. The eccentric wheel blade 605 in the feeding device 6 fully stirs and shears the material, so that the material The particles are smaller, which is convenient for subsequent processing. It is spirally conveyed to the preheating device by a single propeller blade 607, and the passing materials can be quickly preheated by the eddy current winding 403. The ceramic material receiving ring tube 401 can effectively Conduct heat transfer, thereby reducing the heating state of the barrel itself and prolonging the service life of the screw;

The outgassing stirring paddle 503 includes an inner ring piece 5032, and an outer ring piece 5031 set on the inner ring piece 5032. The surface of the outer ring piece 5031 is evenly provided with a ring-shaped hole 5033, and the hole 5033 passes through the inner ring piece. The escape hole 5034 is linked with a cutting ring 5035 annularly arranged on the inner ring sheet 5032. The cutting ring 5035 of the inner ring sheet 5032 cuts the material while allowing the material to pass through, so that the air bubbles in the material are cut and escape through the inner escape hole 5034. Into the cutout hole 5033 of the outer ring sheet 5031, the cutout hole 5033 is also cutting the material of the outer ring at the same time.

It is further illustrated that the end of the material shaft 604 is connected with the bearing 404 .

To further illustrate, an inner frame ring 301 is provided at the joint between the spindle rod 501 and the conical twin-screw rod 302 .

It is further explained that the eccentric blades 605 are elliptical disks, and the eccentric directions of two adjacent eccentric blades 605 are opposite.

It is obvious to those skilled in the art that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from all points of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, so it is intended to be included in the claims All changes within the meaning and range of equivalents of the required elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (6)

1. a kind of spiral conveying mechanism of Double-screw comminutor, including pedestal (1) and the motor on pedestal (1) Room (2), the motor room (2) are connected with mixing device (5), and the mixing device (5) is connected with discharging machine barrel (3), feature It is：It is provided with preheating device (4) at the top of the mixing device (5), preheating device (4) top droop is equipped with the dress that feeds intake It sets (6), the charging device (6) includes feeding shell (601) and the hopper for being vertically installed at feeding shell (601) table wall (603), the feeding shell (601) is internally provided with material shaft (604), and is provided on the shaft of the material shaft (604) Eccentric wheel blade (605) and monolithic screw blade (607)；

The mixing device (5) is internally provided with spindle rod (501), and mixed send is provided on the shaft of the spindle rod (501) Expect that blade (502) and ease gas agitating blade (503), the spindle rod (501) are fixedly connected with setting inside discharging machine barrel (3) Conical double-screw (302), described conical double-screw (302) one end are fixedly connected with bevel gear disk (303), the bevel gear disk (303) it is fixedly connected with front axostyle (305), and is provided with flat pattern helical-blade (304), institute on the shaft of the front axostyle (305) It is internal to state the rear material chamber (306) that front axostyle (305) setting is arranged inside discharging machine barrel (3).

2. a kind of spiral conveying mechanism of Double-screw comminutor according to claim 1, it is characterised in that：The preheating Device (4) includes splicing circle pipe (401), and the splicing circle pipe (401) and feeding shell (601) junction are internally provided with pipe pad It encloses (402), and bearing (404) is provided among the pipe gasket (402), the splicing circle pipe (401) is internally provided with vortex Coiling (403).

3. a kind of spiral conveying mechanism of Double-screw comminutor according to claim 1, it is characterised in that：The ease gas Stirrer paddle (503) includes inner ring piece (5032), and the outer ring piece (5031) being sleeved on inner ring piece (5032), the outer ring Piece (5031) surface annular is evenly arranged with open-minded hole (5033), and the open-minded hole (5033) is connected to annular by interior ease hole (5034) chain The cutting ring (5035) being arranged on inner ring piece (5032).

4. a kind of spiral conveying mechanism of Double-screw comminutor according to claim 1, it is characterised in that：The bias It is ellipse disk to take turns blade (605), and the eccentric direction of two neighboring eccentric wheel blade (605) is opposite.

5. a kind of spiral conveying mechanism of Double-screw comminutor according to claim 1, it is characterised in that：The main shaft Bar (501) and conical double-screw (302) junction are provided with interior bobbin (301).

6. a kind of spiral conveying mechanism of Double-screw comminutor according to claim 1, it is characterised in that：The material axis Bar (604) end and bearing (404) link together.