CN100532079C

CN100532079C - Roller adjustment apparatus for an extrusion mill

Info

Publication number: CN100532079C
Application number: CNB038259974A
Authority: CN
Inventors: J·布洛克
Original assignee: Sprout Matador AS
Current assignee: Sprout Matador AS
Priority date: 2003-02-21
Filing date: 2003-02-21
Publication date: 2009-08-26
Anticipated expiration: 2023-02-21
Also published as: CN1741899A

Abstract

In a roller adjustment apparatus for an extrusion mill, comprising a cylindrical die with radially extending extrusion channels and a number of rollers within the die, rotatable about their axes and co-operating with the die to press material to be treated through the extrusion channels in the die wall, the adjustment apparatus comprises eccentrically journalled bearing shafts for mounting the rollers, said eccentrically journalling of the shafts providing a radial adjustment of the position of the rollers relative to the die, the rotation of the eccentrically journalled shafts is provided by means of extension arms fixedly mounted on the ends of the eccentrically journalled shafts, and said extension arms being connected to an axially movable connection element by means of articulated connected linkage rods, and said connection element being connected to a rod provided with its axis in the axis of the die and extending to a position outside the material flow of the extrusion mill to move the connection element in the direction of the axis of the die, said axial movement being provided manually or by means of a suitable actuator connected to the rod. In this way, only simple mechanical components, such as linkage rods and connection elements are positioned close to the rollers and these components are moved by manual adjustment or by means of suitable actuators positioned outside the aggressive environment close to the rollers of the extrusion mill.

Description

The roller regulating device that is used for extruder

Technical field

The present invention relates to a kind of roller regulating device, this roller regulating device is used for extruder, particularly in the granulator.

Background technology

In extruder, need the distance between dancer rools and mould usually, and in operating process, carry out possible adjusting, so that optimize pelletization.The well known device that is used to carry out this adjusting is realized this adjusting by the hydraulic cylinder that utilization is directly connected on the roll shaft, described in U.S. Pat 4861529, perhaps via placing extruder axial location place and realizing this adjusting, described in EP238147 or EP594278 via the rotatable shaft that cam disc or geared system are connected on the roll shaft.

Summary of the invention

The purpose of this invention is to provide a kind of above-mentioned roller regulating device, utilize this roller regulating device, can avoid mechanical organ with sensitivity to place near the roller under the corrosive atmosphere condition, and can realize this purpose with described roller regulating device.

According to the present invention, a kind of roller regulating device that is used for extruder is provided, comprise: have the cylindrical die of extruding passage that radially extends and a plurality of rollers that are positioned at this mould, described roller can cooperate around its axis rotation and with cylindrical die, pending material extruding is passed the described passage of extruding in the mold wall, drive unit orders about the mould rotation, and order about the axle axis rotation of winding mold tool relative to each other of roller, described adjusting device comprises the back shaft of the eccentric motion that is used to install roller, the eccentric motion of described axle makes by the rotation of the back shaft of this eccentric motion, position that can the relative mould of radiai adjustment roller, it is characterized in that: provide the rotation of the axle of eccentric motion to regulate by means of the adjutage on the end of the axle that is fixedly installed to eccentric motion, described adjutage is connected on the axially movable Connection Element by means of the connecting rod that is articulated and connected, described Connection Element is connected on the bar, the axis of described bar is on the axis of cylindrical die, and extend to the external position place of the material stream of extruder, with mould axially on mobile Connection Element, can be manually or provide described and move axially by means of being connected to suitable actuator on the bar.

Utilize this device, only will place as the simple and mechanical element of connecting rod and Connection Element and so near the roller, and can move these elements by manual adjustments or by means of suitable actuating device, wherein, described actuating device places outside the corrosive atmosphere near the roller of extruder.

Preferably, connecting rod is set as the form of thread.

Preferably, when roller is adjusted to position near mould, the axis normal setting of described connecting rod and mould.

Preferably, be connected to the form that actuator on the bar is set as the hydraulic cylinder piston device.

Preferably, be connected to the form that actuator on the bar is set as the linear actuators of leading screw form.

Preferably, the actuator that is connected on the bar is arranged on the side of extruder, and this side is relative with the inlet that is used for pending material.

Preferably, the number of the roller in the cylindrical die is between 1 to 6.

Preferably, the number of the roller in the cylindrical die is 2 or 3.

From specification described in detail below, can obviously find out the advantage of roller regulating device of the present invention.

Description of drawings

In the detailed part of this specification, the present invention will narrate in more detail with reference to the one exemplary embodiment of roller regulating device, and will be shown in the drawings according to described roller regulating device of the present invention, wherein:

Fig. 1 illustrates the cutaway view that the partial cut of the roller regulating device in the extruder that comprises two rollers slices off;

Fig. 2 illustrates the device of seeing from the end of Fig. 1;

Fig. 3 illustrates the viewgraph of cross-section of the device of the Fig. 1 and 2 that is seen along the III-III line of Fig. 2; And

Figure 4 and 5 are schematically illustrated to comprise related device in the extruder of three rollers.

The specific embodiment

Device shown in Fig. 1 comprises the major part of the extruder that is used to pulverize various food.Extruder comprises and has radially the cylindrical die of extruding passage 2 and a plurality of roller 1 that extends, and is 2 at the number of roller described in Fig. 1-3.Roller 1 is mounted for rotation about their axes and cooperates with cylindrical die 2, thereby pending material is pressed through the passage of extruding in the mold wall.Be used for axle that the device driven (not shown) orders about cylindrical die 2 rotation and order about each roller 1 relative to each other around the axis rotation of cylindrical die 2.Roller 1 is installed on the back shaft 3, and described back shaft 3 is eccentric motion (journalled) in the hole of the back support flange 4 of roller and front roller support plate 5, and the Connection Element that is positioned at 1 on each roller interconnects described back support flange 4 with front roller support plate 5.The eccentric motion of axle 3 makes that by the rotation of the axle 3 of this eccentric motion the radial position that can obtain roller 1 relative cylindrical die 2 is regulated.For axle 3 the rotation that eccentric motion is provided is regulated, adjutage 6 is fixedly secured to the end of the axle 3 of eccentric motion, and described adjutage 6 is connected on the axially movable Connection Element 8 by the articulated linkage 7 of thread form, and the position that described thread can pair roller 1 relative cylindrical die 2 is carried out zero point and regulated.Connection Element 8 is connected on the bar 9, described bar 9 and cylindrical die 2 coaxial lines, and extend to the extruder outside, it is connected on the suitable actuating device in this extruder outside.

Back shaft 3 by maintenance roller 1 is static, and rotational circle cylindricality mould 2, otherwise or keep cylindrical die 2 static, and the back shaft of rotation roller 1, can obtain the relative rotation of

roller

1 and 2 of cylindrical dies, in this case, will have to provide a rotation to connect between actuator and Connection Element 8, this rotation connects the actuator end that may be positioned at bar 9.

As seeing from Fig. 3, moving axially of Connection Element 8 makes the axle 3 of eccentric motion also rotate mobile, this just causes roller 1 to move towards and away from cylindrical die 2, whereby, can come the distance of 2 of dancer rools 1 and cylindrical dies according to the required function of extruder.Thread 7 can pair roller 1 dead-center position carry out possible adjusting, and this adjusting position can be fixed by means of the nut that is installed on the thread 7.The form that is connected the ball-and-

socket joint

11,12 that is made as respectively on the bolt that is connected to thread 10 between thread and Connection Element and adjutage, thus being articulated and connected between adjutage 6 and the Connection Element 8 is provided.

Preferably, can make described mechanism form required size and adjusted by this way, promptly near as far as possible apart from cylindrical die 2 at roller 1, but between roller 1 and the cylindrical die 2 during still without any Metal Contact, the axis normal of thread 7 and cylindrical die 2.This just during near cylindrical die 2, has maximum power transmission at roller 1 between the position of actuator and roller 1, and at roller 1 during near cylindrical die 2, but the distance between pair roller 1 and the cylindrical die 2 is carried out trickleer adjusting.

Near under the situation of cylindrical die 2, make the close summit of off-centre of the back shaft 3 of eccentric motion at roller 1, this has just further supported last feature.

Above narrating the preferred embodiments of the present invention, but can predict various optimizations under the situation that does not depart from following claim of the present invention, this species diversity comprises the roller 1 that another kind of number is provided, and the preferred number of roller is 2 or 3.And, be connected to the suitable actuator that actuator on the bar 9 can be set as the linear actuators of hydraulic pressure or air rammer air cylinder device, leading screw pattern or be used for any other pattern of this purpose.The manual adjustments of the position of bar 9 also can be predicted.And, can change the position of actuator, as change it to the position of axle in 4, bar 9 can be the piston rod of piston cylinder device in this case, perhaps in the position of axle 4 opposite sides.

Claims

1. roller regulating device that is used for extruder comprises:

Have radially the cylindrical die of extruding passage (2) that extends and be positioned at a plurality of rollers (1) of this mould (2), described roller can cooperate around its axis rotation and with cylindrical die, pending material extruding is passed the described passage of extruding in the mold wall, drive unit orders about mould (2) rotation, and order about the axle axis rotation of winding mold tool (2) relative to each other of roller (1), described adjusting device comprises the back shaft (3) of the eccentric motion that is used to install roller (1), the eccentric motion of described axle (3) makes by the rotation of the back shaft (3) of this eccentric motion, can radiai adjustment roller (1) position of mould (2) relatively, it is characterized in that:

Provide the rotation of the axle (3) of eccentric motion to regulate by means of the adjutage (6) on the end of the axle (3) that is fixedly installed to eccentric motion, described adjutage (6) is connected on the axially movable Connection Element (8) by means of the connecting rod that is articulated and connected (7), described Connection Element (8) is connected on the bar (9), the axis of described bar (9) is on the axis of cylindrical die (2), and extend to the external position place of the material stream of extruder, with mould (2) axially go up mobile Connection Element (8), can be manually or provide described and move axially by means of being connected to suitable actuator on the bar (9).

2. roller regulating device as claimed in claim 1 is characterized in that, connecting rod (10) is set as the form of thread (7).

3. roller regulating device as claimed in claim 1 or 2 is characterized in that, when roller (1) is adjusted to position near mould (2), and the axis normal setting of described connecting rod (10) and mould (2).

4. roller regulating device as claimed in claim 1 is characterized in that, is connected to the form that actuator on the bar (9) is set as the hydraulic cylinder piston device.

5. roller regulating device as claimed in claim 1 is characterized in that, is connected to the form that actuator on the bar (9) is set as the linear actuators of leading screw form.

6. roller regulating device as claimed in claim 1 is characterized in that, the actuator that is connected on the bar (9) is arranged on the side of extruder, and this side is relative with the inlet that is used for pending material.

7. roller regulating device as claimed in claim 1 is characterized in that, the number of the roller (1) in the cylindrical die (2) is between 1 to 6.

8. roller regulating device as claimed in claim 7 is characterized in that, the number of the roller (1) in the cylindrical die (2) is 2 or 3.