JP3820281B2 - Waste extruder and its disassembly and assembly method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waste extruder suitable for volume reduction processing of waste plastics, which is formed by extruding waste plastic wastes in order to process and reuse the waste plastics. Further, the waste extruder of the present invention can also treat paper waste, wood waste and EP ash.
[0002]
[Problems to be solved by the invention]
Foreign materials are mixed in waste plastics collected as trash. Since this foreign material is metal, pebbles, sand, etc., the screw blades and shaft (screw blade bosses) of the screw wear out in the actual operation time of 300 to 400 hours. When it is worn out, wear-resistant metal is piled up on the worn part by welding or the like and reused.
[0003]
The above-described build-up operation is performed by disassembling the screw.
[0004]
However, as described above, foreign substances in the waste plastics corrode because they enter between the hollow shaft of the screw blade boss and the extension of the gear shaft and are stressed. For this reason, the boss of the screw blade and the fitting portion of the gear shaft are fixed, and it is difficult to pull out the gear shaft from the hollow shaft provided with the screw blade, and it may be impossible to disassemble.
[0005]
Of course, in terms of the mechanical configuration, the hollow shaft, which is the boss of the screw blade as described above, and the gear shaft are designed to be easily assembled and disassembled. However, if the gear shaft and the screw are fixed and integrated as described above, they are disassembled. Is extremely difficult. For example, even when a puller, which is a tool for pulling out an on-axis fitting, is used, the puller claw cannot be inserted into the gap between the screw blade outer periphery and the trough inner wall. Particularly in these disassembly and assembly, since the gear shaft extends between the power distribution gear box and the extrusion device, the power distribution gear box and the extrusion device must be disassembled and assembled together, and the work time is very long.
[0006]
In the present invention, a power distribution gear box and an extrusion device that are easily disassembled and assembled by eliminating a fitting part into which foreign matter in a processed material enters due to use, particularly a hollow boss of a screw blade and a fitting part of a gear shaft, are coaxial. An object of the present invention is to provide a waste extruder equipped with the above.
[0007]
It is another object of the present invention to provide a disassembly / assembly method in which the above-mentioned waste extruder can be disassembled and assembled by an easy operation by disassembling and assembling the extrusion apparatus without disassembling the power distribution gear box.
[0008]
[Means for Solving the Problems]
The first invention of the present invention is a trough having a raw material inlet at the upper part on one end wall side in the upper and lower parts, a die on the other end wall on the extrusion side, and a heating means for the processed material inside. In a waste extruder provided in a common machine, an extruder provided rotatably with a pair of horizontal shaft screws and a power distribution gear box having gears that are coaxially meshed with each other. The shaft of the screw is inserted through the trough's power distribution gear box side end wall, and the gear shaft of the power distribution gear box is rotatably inserted into both end walls of the power distribution gear box so as not to move in the axial direction. The waste extruder is characterized in that the screw shaft and the gear shaft are detachably rigidly connected and the screw shaft is cantilevered by a power distribution gear box via the gear shaft .
[0009]
A second invention of the present invention is the waste extruder according to the first invention, wherein the screw shaft is a solid shaft.
[0010]
A third invention of the present invention is the waste extruder according to the first invention, wherein the screw shaft and the gear shaft are rigidly connected by a shaft joint.
[0011]
According to a fourth aspect of the present invention, the shaft coupling is rigidly connected to the driven side coupling joint integrally or integrally with the shaft of the screw and the driving side coupling joint integrally or integrally with the gear shaft by the screw member. The waste extruder according to the third aspect of the present invention, which is connected.
[0012]
According to a fifth aspect of the present invention, the screw is integrally provided with a screw blade around an axis, the screw blade of the screw for one pitch of the end wall on the extrusion side has a boss, and the boss is the screw. The waste extruder according to the first aspect of the present invention is detachably fitted and fixed to the shaft.
[0013]
A sixth aspect of the present invention is a trough having a raw material inlet at the upper part on one end wall side in the upper and lower parts, a die on the other end wall on the extrusion side, and a heating means for the processed material inside. In a waste extruder provided in a common machine, an extrusion device provided with a pair of horizontal axis screws rotatably and a power distribution gear box provided with gears that are coaxially meshed with each other .
(A) a power distribution gearbox that supports a gear shaft having meshing gears so as to be rotatable and not move in the axial direction;
(B) a screw having a shaft penetrating and sealing one end wall of the trough;
It has a drive-side shaft joint that is integral or integral with the gear shaft, and a driven-side shaft joint that is integral or integral with the screw shaft, and is rigidly coupled so that the drive-side shaft joint and the driven-side shaft joint can be separated in the axial direction. A shaft coupling,
One end wall having a shaft-sealed house with a shaft-sealing member that can detachably seal the shaft of the screw, and the other end having a die provided to take a position where the trough can be opened and a position where the trough is closed End walls,
An extrusion device having
(B) When the assembly is disassembled from the assembled state, (b) to release the rigid coupling of the shaft coupling pair, and (b) to remove the upper trough by unfastening the trough and the lower trough. (c) comprising the step of moving the screw axially separating the driven side shaft coupling from the drive-side shaft coupling the (two) screw taken lift from the bottom trough, when assembled from degradation state of (e) screw move lowering onto the lower trough the (f) screw in the direction of the drive-side shaft coupling fitted to the driven-side shaft coupling to the drive side shaft coupling for fastening the (g) upper and lower troughs combined upper trough bottom trough having fastening to process, exploded waste extruder, characterized in that installation and removal of the screw only extrusion apparatus having a cantilever supported screw power degradation gearbox performed exploded It is the law.
[0018]
[Prior art]
Waste plastic extruders that soften waste plastics (garbage) by mutual friction under pressure by an extruder and heating by a heater are used for recycling or volume reduction of waste plastics garbage.
[0019]
This extruder supports a pair of symmetrical screws on the horizontal axis so as to be rotatable in parallel. The shaft of the screw is formed integrally with two gear shafts of a power distribution gear box interposed between a drive source for driving the screw. This shaft is rotatably supported by a power distribution gearbox. In such an extruder, the screw blades of the screw are provided on the hollow shaft, and the extension portion of the gear shaft is inserted through the hollow shaft including the screw blades. Hollow shaft having an extension portion and a screw blade of the gear shaft is the summer to obtain transfer a rotational force.
[0020]
That is, the center hole of the hollow shaft that becomes the boss of the screw blade has a key groove in a polygonal cross section (square, hexagon, etc.) or a round hole. The gear shaft of the power distribution gear box is fitted in the hole of the hollow shaft that becomes the boss of the aforementioned screw blade. Such a screw is difficult to machine and assemble and disassemble when the hole of the boss of the screw blade becomes long. Therefore, the screw is cut at several points perpendicular to the axis and overlapped in the axial direction.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0022]
(overall structure)
FIG. 13 is a plan view showing the entire waste extruder.
[0023]
A motor 3 is fixed to a motor base 2 fixed to the machine base 1 so that its position can be adjusted. A belt 4 d is wound between a pulley 4 b fixed to the input shaft 4 a of the speed reducer 4 fixed to the machine base 1 and a pulley 3 b fixed to the motor shaft 3 a of the motor 3.
[0024]
The output shaft 4 c of the speed reducer 4 is connected to one of the two gear shafts 6 of the power distribution gear box 5 fixed to the machine base 1 via a chain shaft joint 15.
[0025]
As will be described later, the two gear shafts 6 of the power distribution gear box 5 are rotatably supported by the gear case 7 with both ends supported, and the output side is an extrusion device 8 fixed to the machine base 1 which will be described in detail later. Are respectively connected to the screws 9 via shaft couplings 11.
[0026]
Next, each configuration will be described. Since the present invention relates to a power distribution gear box and an extrusion device, these will be described in detail.
[0027]
(Power distribution gearbox)
The power distribution gear box 5 is shown in a sectional view and a two-sided view in FIGS. 5 and 6.
[0028]
In the figure, one of the gear shafts 6 and 6 has a gear shaft 6 with a key for coupling to the chain shaft joint 15, and the other one does not have a shaft shaft 15 mounting shaft portion. Therefore, only one gear shaft 6 on one side will be described.
[0029]
Gears 16 and 16 that mesh with each other are fitted on the gear shaft 6 via keys 16a. The gear shaft 6 has a gear fitting portion 6c and a reduced diameter portion 6d having a diameter reduced from the gear fitting portion 6c, and a shaft coupling mounting shaft having a diameter reduced from the gear fitting portion 6c at the other end on one end side having the reduced diameter portion 6d. A portion 6a is provided.
[0030]
Roller bearings 18 and 26 are fitted to both ends of the gear fitting portion 6c, and a thrust ball bearing 21 is fitted to the reduced diameter portion 6d. The roller bearings 18 and 26 are fitted in the bearing houses 7b and 7d of the gear case 7, respectively. The thrust ball bearing 21 is supported by a shaft seal cover 24 fitted and fixed to the gear case 7. The shaft seal cover 24 includes a shaft seal member (not shown) that seals the portion through which the gear shaft 6 is inserted.
[0031]
5 is applied to the gear shaft 6, the thrust is supported by the thrust ball bearing 21 whose movement is stopped by the shaft seal cover 24.
[0032]
The gear case 7 is in the shape of a sealed hollow hexagonal container, and an opening 7f used for assembly and inspection is provided on the upper surface, and the opening 7f is covered with a lid 30 that can be opened and closed.
[0033]
The opening 7f is large enough to allow the gear 16 to enter and exit during assembly and disassembly.
[0034]
The gear case 7 is filled with lubricating oil to a position where the gear 16 is immersed. The gear case 7 is provided with an oil meter 7g for checking the amount of the lubricating oil and a plug (not shown), and a drain hole 7h for discharging the lubricating oil in the gear case 7 is provided.
[0035]
(Configuration of extrusion equipment)
The extrusion device 8 is shown in three views including cross-sectional views in FIGS. 1, 2, and 3, and is a plan view, a side cross-sectional view, and a front view, respectively. 4 is a cross-sectional view taken along the line AA in FIG.
[0036]
In FIG. 1, the two screws 9, 9 are the same except that the twisting direction of the screw blade 9b is opposite to each other.
[0037]
The trough 31 is divided into upper and lower troughs 31A and 31B, and a raw material inlet 31d is provided at the upper end on one end side of the upper trough 31A.
[0038]
A die 35 is attached to the die attachment plate 12. A heater 36a is provided on the outer periphery of the trough 31 on the extrusion side, and the raw material in the trough 31 is accelerated by the compression heat of the screw 9 and the heater 36a to promote melting of the raw material. For the same purpose, a heater 36b is provided around the die 35.
[0039]
The screw 9 is fixed by welding with a screw blade 9b wound around a screw blade shaft portion 9a1 of a solid screw shaft 9a. The center hole of the boss 9b2 of the screw blade 9b1 for one pitch facing the die mounting plate 12 in the screw blade 9b is fitted into a reduced shaft portion 9a2 having a diameter reduced from the screw blade shaft portion 9a1 of the screw shaft 9a. The reduction shaft portion 9a2 is a quadrilateral cross section, a polygon such as a hexagon, or a round shaft with a key. In this example, the reduction shaft portion 9a2 is a quadrangle as shown in FIG. 1 and 2, the pitch of the screw blades 9 b gradually decreases from the right side toward the die attachment plate 12.
[0040]
The screw shaft 9a is inserted through a shaft seal house 31a provided in an upper and lower split trough 31, and one end of the shaft coupling 11 is fixed to the end. The screw shaft 9a inserted through the shaft seal house 31a has a diameter larger than that of the screw blade shaft portion 9a1 to form a shaft seal shaft portion 9a3. A packing 32 is inserted into the shaft-sealed house 31a, and the packing 32 is pressed by an annular integral packing presser 33 which is fitted into the shaft-sealed house 31a and tightened with a screw, and the screw shaft 9a of the shaft-sealed house 31a. The shaft of the insertion part is sealed. Further, a collar 10 is fixed to the screw shaft 9a on the inner side of the trough of the shaft seal house 31a so that the raw material does not easily enter the shaft seal house 31a.
[0041]
The end face of the boss 9b2 of the screw blade 9b1 for one pitch on the discharge side is opposed to the die attachment plate 12 with a gap.
[0042]
As shown in FIG. 4, the trough 31 including the shaft seal house 31a is divided into upper and lower halves having a plane including the center line of the two screws 9 as a mating surface 31e, and the upper trough 31A and the lower trough 31B are the upper and lower troughs 31A, 31A, It fixes with the bolt nut which is not shown in figure through which the outer flange part 31c with which 31B is provided, respectively. This mating surface 31e also exists on the end wall 31b on the entrance side. The flange portion 31c is in contact with the flat plate-shaped die attaching plate 12 at the end surface 31f on the discharge side. The die attaching plate 12 is attached to the lower trough 31B by a hinge 37 and can be opened and closed.
[0043]
(Shaft coupling between power distribution gearbox and extrusion equipment)
FIG. 15 is a front view of the drive side shaft coupling 11A, and FIG. 8 is a front view of the driven side shaft coupling 11B. Further, the end of the gear shaft 6 is shown in FIG. 14, and the screw 9 is shown in FIG. The drive side shaft coupling 11A is fitted into the mounting shaft portion 6a of the gear shaft 6 and fixed by welding W, and the driven side shaft coupling 11B is fitted into the mounting shaft portion 9a4 of the screw shaft 9a and fixed by welding W. Yes. Bolt holes 11A4 and 11B4 are provided on the flange portions of the drive side shaft joint 11A and the driven side shaft joint 11B at equal intervals on a circle having the same radius. The spring washers are inserted through these bolt holes 11A4 and 11B4. The drive-side shaft coupling 11A and the driven-side shaft coupling 11B are fastened with the attached bolt nut 42 (see FIG. 2) to press-contact the flange surface. Further, key grooves 11A5 and 11B5 having the same shape and the same size are provided at the same positions on the flange end surfaces of the driving side shaft coupling 11A and the driven side shaft coupling 11B as a detent. These key grooves 11A5 and 11B5 are long in the radial direction. As shown in FIG. 2, the key 43 is fitted over these key grooves 11A5 and 11B5.
[0044]
The above-mentioned shaft coupling 11 is fitted to the gear shaft 6 and the screw shaft 9a and welded to the respective shafts. However, the driving side shaft coupling 11A is manufactured integrally with the gear shaft 6, and the driven side shaft coupling 11B is You may manufacture integrally with the screw shaft 9a.
[0045]
(Screw surface treatment)
The screw 9 has a screw shaft 9a and a screw blade 9b made of medium-hard steel, for example, SS400, and the surface of the screw shaft 9a and the screw blade 9b in contact with the raw material is subjected to surface treatment.
[0046]
As shown in FIGS. 7, 10, 11, and 12, the screw shaft 9a has a surface 44 of the screw blade shaft portion 9a1 and screw blade 9b coated with a wear-resistant metal, for example, a high chrome alloy, by welding 44. Yes.
[0047]
As shown in FIGS. 7, 10, and 11, the advancing side surface 9 b 3 that applies thrust to the raw material and the outer peripheral portion 9 b 4 are coated with a wear-resistant metal, such as an alloy coating 44, on the screw blade 9 b by welding.
[0048]
The last one pitch screw blade 9b1 on the extrusion side is also subjected to surface treatment in the same manner as the screw blade 9b.
[0049]
(Disassembly of the extrusion equipment)
In the above-described waste extruder extruder 8, the surface of the screw 9 in contact with the raw material is worn by use. In particular, the surface of the screw shaft 9a and the advancing side surface 9b3 of the screw blade 9b are treated with a wear-resistant metal, but are ground and scraped off with metal particles, metal powder, sand, etc. in the waste plastic waste as a raw material. Therefore, if the extrusion device 8 is operated for several hundred hours, the wear limit is reached, so the screw 9 is removed and the wear-resistant metal is built up by welding.
[0050]
Disassembly of the extrusion device 8 (a) releases the rigid connection between the screw shaft 9a and the gear shaft 6. For this reason, the bolt nut 42 which fastens the shaft coupling 11 is removed.
(B) The upper trough 31A and the lower trough 31B are unfastened and the upper trough 31A is removed. Therefore, the nut is removed from the bolt nut connecting the split shaft seal house 31a and the annular integral packing presser 33, and the packing presser 33 is slid on the screw shaft 9a and moved to the right (tightening the packing presser 33). The bolts and nuts to be inserted are not shown in the figure, but their positions are shown in the center line in FIG. 2), and the planes connecting the centers of the two screws 9 of the upper trough 31A and the lower trough part 31B are used as the mating surfaces 31e. A bolt and nut (not shown) penetrating the flange 31c is removed.
(C) Remove the screw 9 from the lower trough 31B. To remove the screw 9 from the lower trough 31B, in FIG. 2, after opening the die attachment plate 12, the screw 9 is moved to the left in FIG. 2, and the fitting portion 11c of the shaft coupling 11 is removed to separate the shaft couplings 11A and 11B. At the same time, the key 43 is escaped from the keyway 11A5 or 11B5. Thereafter, the screw 9 is lifted and disassembled. Since the screw 9 is large and heavy, axial movement is performed using a lever or a hydraulic ram, and the screw 9 is lifted by a hoist, a forklift or the like.
[0051]
As described above, the above-described disassembly is performed in the order of (A), (B), and (C), and the step (B) of removing the upper trough 31A is performed first, and then the shaft coupling 11 of (A) is performed. The conclusion may be released. In either case, the removal of the screw 9 in (c) is the last step.
[0052]
As described above, according to the present invention, the power distribution gear box 5 remains fixed to the machine base 1 without being disassembled when the screw 9 is disassembled. The extrusion device 8 also keeps the lower trough 31B fixed to the machine base 1. For this reason, regarding the extrusion apparatus 8, the screw 9 may be disassembled independently, and the screw 9 can be easily disassembled as described above. Therefore, maintenance work every several hundred hours was performed very efficiently, and the operation efficiency could be improved. Further, the gear shaft 6 remains stationary. Accordingly, there is no need to consider the internal configuration of the power gear box 5 and the gear case 7 divided in advance, which has been conventionally performed in order to disassemble the screw 9, and the power distribution gear box 5 can be independently configured. What is necessary is to increase the degree of freedom in which the configuration of the power distribution gearbox 5 can be selected.
[0053]
After removing the screw 9, build-up welding is performed on the above-described worn portion.
[0054]
When assembling from the disassembled state,
(D) The screw 9 is attached to the lower trough 31B. This lowers the worn portion of the screw 9 after the build-up welding in a horizontal state by a hoist, a forklift or the like and lowers it onto the lower trough 31B where the die attachment plate 12 is open. As a result, the outer periphery of the screw 9 is in contact with the lower trough 31B, and the lowered position is a position shifted to the left from the position of the screw 9 in the assembled state of FIG. Next, the screw 9 is moved to the right in FIG. 2 with a lever, a hydraulic ram or the like, and the fitting portion 11c of the shaft coupling 11 and the key 43 are fitted to the key grooves 11A5 and 11B5. (E) The upper trough 31A is aligned with the lower trough 31B, and the upper and lower troughs 31A and 31B are fastened. This fastening is performed by fastening the flange 31c with a bolt and nut (not shown). After fastening the upper and lower troughs 31A and 31B, the packing presser 33 is fitted into the shaft seal house 31a. At that time, an axial bolt planted in a shaft seal house 31a (not shown) is inserted into the bolt hole of the packing retainer 33, a nut is screwed into the bolt, the packing retainer 33 is tightened, and the packing 32 is tightened. Next, the die attaching plate 12 is closed.
(F) The screw shaft 9a and the gear shaft 6 are fastened. Since the fitting portions 11c of the shaft couplings 11A and 11B are already fitted together, the shaft couplings 11A and 11B are fastened by the bolts and nuts 42.
[0055]
The above step (d) is performed first and cannot be changed, but the step of attaching the upper trough 31A to the lower trough 31B of (e) and the step of fastening the shaft couplings 31A, 31B are reversed in order. May be.
[0056]
As described above, according to the present invention, the power distribution gear box 5 can be operated while being fixed to the machine base 1 when the screw 9 is assembled. The extrusion device 8 can also be assembled with the screw 9 while the lower trough 31B is fixed to the machine base 1. Therefore, the assembly work that could not be assembled unless the power distribution gearbox is disassembled is greatly simplified, and the assembly time is greatly reduced.
[0057]
【The invention's effect】
In the first aspect of the present invention, the shaft of the screw is inserted through the end wall of the trough on the power distribution gear box side, and the gear shaft of the power distribution gear box can be freely rotated on both end walls of the power distribution gear box. Further, by supporting so as not to move in the axial direction and detachably rigidly connecting the screw shaft and the gear shaft, the power distribution gear box and the extrusion device can be separately manufactured, and the manufacture becomes easy. Maintenance can also be performed separately. In particular, the disassembly / assembly of the extrusion apparatus is limited to the disassembly / assembly of the extrusion apparatus alone, which greatly reduces the work time.
[0058]
In the second invention of the present invention, since the screw shaft is solid in the first invention, the strength rigidity of the screw can be increased. Further, since it is a solid shaft, it is much easier to make than a conventional case where the gear shaft is extended and inserted into a hollow shaft.
[0059]
In the third invention of the present invention, in the first invention, the screw shaft and the gear shaft are rigidly connected by the shaft coupling, so that disassembly / assembly is possible only by slightly moving the screw.
[0060]
According to a fourth aspect of the present invention, in the third aspect, the shaft coupling is a driven-side shaft coupling integrally or integrally formed with the shaft of the screw and a driving-side shaft coupling formed integrally or integrally with the gear shaft. Since the screw shaft is rigidly connected, the gear shaft and the screw shaft are coupled with high strength and rigidity, and the shaft coupling and the gear shaft or the screw shaft are not fitted together. There is no room for this to occur.
[0061]
In the fifth aspect of the present invention, the screw blade for the last one pitch on the extrusion side is provided with a boss that is removably fitted and fixed to the screw shaft. Installation is possible.
[0062]
In the sixth aspect of the present invention, when disassembling the waste extruder, (i) releasing the rigid connection of the pair of shaft joints (b) removing the upper trough by unfastening the trough and the lower trough (c) move the screw in the axial direction to separate the driven side shaft coupling from the drive-side shaft coupling (d) has a step of taking out lifting the screw from the lower trough, when assembled from degradation state on the lower trough the (e) screw the (f) screw lowering to move in the direction of the drive-side shaft coupling fitted to the driven-side shaft coupling to the drive side shaft joint fastening to (g) a step of fastening the upper and lower troughs combined upper trough bottom trough Therefore, the screws can be disassembled and assembled by performing simple processes.
[Brief description of the drawings]
FIG. 1 is a plan view of an extrusion apparatus.
FIG. 2 is a longitudinal sectional view of an extrusion apparatus.
FIG. 3 is a front view seen from the extrusion side of the extrusion apparatus.
4 is a cross-sectional view taken along the line AA in FIG.
FIG. 5 is a plan view of a power distribution gearbox.
FIG. 6 is a front view including a partial cross section of the power distribution gear box.
FIG. 7 is a plan view of a screw.
FIG. 8 is a front view of a shaft coupling at a screw end.
FIG. 9 is a front view of an end portion on the extrusion side of the screw.
FIG. 10 is a front view of an end portion of a screw blade.
FIG. 11 is a right sectional view of a screw blade.
FIG. 12 is a cross-sectional view perpendicular to the axis of a screw shaft.
FIG. 13 is a plan view of the entire waste extruder.
FIG. 14 is a side view showing a part of the gear shaft in cross section.
FIG. 15 is a front view of the shaft coupling side of the gear shaft.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Machine stand 2 ... Motor stand 3 ... Motor 3a ... Motor shaft 4 ... Reduction gear 4a ... Input shaft 4b ... Pulley 4c ... Output shaft 4d ... Belt 5 ... Power distribution gear box 6 ... Gear shaft 6a ... Shaft coupling attachment shaft 6c: Gear insertion portion 6d: Journal portion 6e: Mounting shaft portion 7: Gear case 7b, 7d ... Bearing house 8 ... Extrusion device 9 ... Screw 9a ... Screw shaft 9a1 ... Screw blade shaft portion 9a2 ... Reduction shaft portion 9a3 ... Shaft seal Shaft portion 9a4 ... Shaft joint mounting shaft portion 9b, 9b1 ... Screw blade 9b2 ... Boss 9b3 ... Advance side surface 9b4 ... Outer peripheral portion 10 ... Collar 11 ... Shaft joint 11A ... Drive side shaft joint 11B ... Driven side shaft joint 11A4, 11B4 ... Bolt hole 11A5, 11B5 ... Key groove 11c ... Fitting part 12 ... Die mounting plate 15 ... Chain shaft coupling 16 ... Gear 16a ... Key 18 ... Roller bearing 2 DESCRIPTION OF SYMBOLS 1 ... Thrust ball bearing 24 ... Shaft seal cover 26 ... Roller bearing 30 ... Cover 31 ... Trough 31a ... Shaft seal house 31b ... End wall 31c ... Outer flange part 31d ... Raw material inlet 31e ... Mating surface 31A ... Upper trough 31B ... Lower part Trough 32 ... Packing 33 ... Packing retainer 35 ... Dies 36a, 36b ... Heater 37 ... Hinge 39 ... Deceleration motor 39a ... Chain wheel 41 ... Chain 42 ... Bolt nut 43 ... Key 44 ... High chrome alloy coating

Claims (6)

Rotate a pair of horizontal shaft screws in a trough that has a raw material inlet at the upper part of one end wall side and has a die on the other end side wall and is equipped with a heating means for the processed material inside. In a waste extruder provided on a common machine base, and a power distribution gearbox having gears that are coaxially meshed with each other, the screw shaft is provided for trough power distribution. The end wall on the gear box side is sealed and inserted, and the gear shaft of the power distribution gear box is supported on both end walls of the power distribution gear box so as to be rotatable and not moved in the axial direction. A waste extruder, wherein the gear shaft is detachably rigidly connected, and a screw shaft is cantilevered by a power distribution gear box via the gear shaft .   The waste extruder according to claim 1, wherein the screw shaft is a solid shaft.   The waste extruder according to claim 1, wherein the screw shaft and the gear shaft are rigidly connected by a shaft joint.   The shaft coupling is a driven-side shaft coupling integrally or integrally formed with a screw shaft, and a driving-side shaft coupling integrally or integrally formed with a gear shaft are rigidly connected by a screw member. 4. A waste extruder according to 3.   The screw is integrally provided with a screw blade around the shaft, and the screw blade of the screw for one pitch of the end wall on the extrusion side has a boss, and the boss is detachably fitted to the shaft of the screw. The waste extruder according to claim 1, which is fixed. A pair of horizontal shaft screws are inserted into a trough having a raw material inlet at the upper part on one end wall side in the upper and lower parts, a die on the other end wall on the extrusion side, and a heating means for the processed material inside. In a waste extruder provided in a common machine base, an extrusion device provided rotatably and a power distribution gear box provided with gears that are coaxially meshed with each other.
(A) a power distribution gearbox that supports a gear shaft having meshing gears so as to be rotatable and not move in the axial direction;
(B) a screw having a shaft penetrating and sealing one end wall of the trough;
It has a drive-side shaft joint that is integral or integral with the gear shaft, and a driven-side shaft joint that is integral or integral with the screw shaft, and is rigidly coupled so that the drive-side shaft joint and driven-side shaft joint can be separated in the axial direction. A shaft coupling,
One end wall having a shaft-sealed house with a shaft-sealing member that can detachably seal the shaft of the screw, and the other end having a die provided to take a position where the trough can be opened and a position where the trough is closed End walls,
An extrusion device having
(B) When the assembly is disassembled from the assembled state, (b) to release the rigid coupling of the shaft coupling pair, and (b) to remove the upper trough by unfastening the trough and the lower trough. (C) Move the screw in the axial direction to separate the driven side shaft coupling from the driving side shaft coupling. (D) Lift and remove the screw from the lower trough. Lower the upper trough (f) Move the screw in the direction of the drive side shaft joint and fit the driven side shaft joint to the drive side shaft joint and tighten it. (G) Align the upper trough with the lower trough and install the upper and lower troughs. Disassembling and disassembling a waste extruder comprising disassembling only an extruding device having a fastening process and having a screw cantilevered by a power disassembling gear box, and removing and attaching the screw. Law.

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