CN110332797A - A kind of installation method of pellet dryer tilting rotary table cylinder - Google Patents
A kind of installation method of pellet dryer tilting rotary table cylinder Download PDFInfo
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- CN110332797A CN110332797A CN201910537750.5A CN201910537750A CN110332797A CN 110332797 A CN110332797 A CN 110332797A CN 201910537750 A CN201910537750 A CN 201910537750A CN 110332797 A CN110332797 A CN 110332797A
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- cylinder
- support roller
- installation
- roller group
- gear
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
Abstract
The present invention relates to a kind of installation methods of pellet dryer tilting rotary table cylinder, including Step 1: bearing plate is installed；Step 2: support roller group is installed；Step 3: support roller circle installation；Step 4: Cylinder assembly；Step 5, transmission device installation；Step 6, the installation of cylinder sealing device；Step 7, grouting.Operation of the present invention process is simple and easy, and directiveness is strong, and when installation is all made of conventional equipment, and installation cost is low, and installation accuracy is high.
Description
Technical field
The present invention relates to equipment mounting technique field more particularly to a kind of installation sides of pellet dryer tilting rotary table cylinder
Method.
Background technique
Drying is the simultaneous dehumidification process of heat and mass, needed for heat be due to dried medium by convection current,
The modes such as conduction, heat radiation are transmitted to dried material, become steam after so that moisture content in material is obtained heat from wherein separating
Out, it is lower and reach the dry products of prescribed requirement to finally obtain moisture content.
Rotary drum drier mainly by the tilted cylinder of low speed rotation, heats glassware, cyclone separator, washer etc.
Capital equipment is constituted, and is widely used in the drying of various material shape materials and small block material.The pelletizing dry for pelletizing is dry
Dry machine is also one kind of rotary drum drier, is made of cylinder, support roller group, backing ring, gear ring and transmission device；Cylinder passes through
Backing ring is supported in forward and backward 2 groups of support roller groups, and support roller group sets multiple support rollers, and the gear wheel in gear ring and transmission device is set on cylinder
Engaged transmission simultaneously drives cylinder to turn round around axis, and cylinder is obliquely installed.But since the geometric dimension of pellet dryer is larger, incline
Cylinder in oblique revolving drum is longer, needs for cylinder to be divided into 2 sections and installation is grouped at the scene, therefore it is difficult to increase installation
Degree.
Summary of the invention
The present invention provides a kind of installation methods of pellet dryer tilting rotary table cylinder, and operating process is simple and easy,
Guiding strong, when installation, is all made of conventional equipment, and installation cost is low, and installation accuracy is high.
In order to achieve the above object, the present invention is implemented with the following technical solutions:
A kind of installation method of pellet dryer tilting rotary table cylinder, includes the following steps:
Step 1: bearing plate is installed；
According to GB50231-2009 " code for construction and acceptance of mechanical equipment installation engineering ", specification, the quantity of backing plate are determined
And riding position, since the cylinder of drying machine has gradient, when placing backing plate using seat slurry processes, using the angle of manufactory's offer
Degree block and level are checked that backing plate upper surface altitude limit deviation is 0~0.5mm；
Step 2: support roller group is installed；
1) forward and backward 2 support roller groups are lifted respectively to correspondence, and makes the longitudinal centre line of support roller group pedestal, cross
To center line respectively with the longitudinal centre line on corresponding basis, cross central line to just；
2) according to the preceding support roller group of longitudinal reference line centering, the lengthwise position of rear support roller group, the longitudinal center of support roller group before making
Line and the longitudinal centre line of rear support roller group in line, and are overlapped with longitudinal reference line；The longitudinal direction of preceding support roller group and rear support roller group
Center is ± 3mm away from tolerance；
3) lateral position of preceding support roller group, rear support roller group is adjusted according to transverse reference line, tolerance is ± 0.5mm；
4) according to absolute altitude reference line, cooperated using precision level and scale, be with bottom center's point of support roller group pedestal
Standard adjusts the center height with group bearing of conveyor idler seat, tolerance≤0.1mm/m；
5) cooperated using slope gage and level meter, adjust the gradient of each support roller；
6) after support roller group is installed, back-grouting is carried out to support roller group foundation bolt；
Step 3: support roller circle installation；
1) support roller circle center line is marked on cylinder, between cylinder high temperature position, backing ring center line and support roller center line
Stay the pre- allowance of thermal expansion；
2) before Barrel hoisting, by the assembly of support roller circle on cylinder；Wheel belt Circular Run-out Tolerance≤2mm of support roller circle, support roller circle
Wheel belt radial run-out≤1mm；
3) the reserved expansion clearance between support roller circle and stiffening ring are as follows: temperature end preset clearance: 2.5~3mm, low-temperature end are reserved
Gap: 1.5~2mm；
Step 4: Cylinder assembly；
1) it will be backfilled and made firm by ramming around basis, tamped, set 4 along the longitudinal centerline in cylinder installation site and face
When support, i.e., 4 rocker bearings are manufactured according to cylinder form fit；
2) cylinder is divided into 2 sections, hangs onto temporary support 2 sections of cylinders respectively with crawler crane, is provided with thrust gear wheel
Cylinder section lifting it is in place after installation gear wheel carry out it is longitudinally fixed, then on the basis of the cylinder section for being equipped with thrust gear wheel, adjustment
Another section of cylinder, cylinder nonstraightness and docking weld bond after making 2 sections of cylinder docking meet demand of technical standard；Cylinder assembly is completed
Afterwards, rolling ring and support roller contact surface length are not less than the 70% of its face length；
3) after cylinder docking weld bond is adjusted in place, centralized positioning is carried out using laser collimator, rotating cylinder detects cylinder
The radial run-out value at center, and meet the following conditions: at bull gear and rolling ring the radial run-out value of body centre≤
4mm；Radial run-out value≤6mm of body centre at barrel head, tail；The radial run-out value of remaining position body centre≤
8mm；
4) height for adjusting 2 sections of cylinders when tube roller mill using jack, using hoist engine and pulley as interim transmission
System rotates cylinder around center line, guarantees that the unfitness of butt joint of 2 sections of cylinders is not overproof；It is detected using laser collimator, guarantees 2 sections of cylinders
The Concentricity tolerance in body centre≤φ 6mm, Concentricity tolerance≤φ 4mm at stiffening ring, cylinder and backing ring, gear ring it is same
Heart degree deviation≤1mm, it is above items passed examination after carry out 2 sections of cylinders butt welding；Using manual electric arc welding, downhand welding and balanced welding
Method, per pass fusion length are the 1/8 of perimeter, are often soldered one of weld seam, weld down one of weld seam, 2 sections of welderings again for 180 ° of cylinder rotation
It is staggered between seam 90 °~180 °；Weld seam uses multiple-bead deposit, and one layer of peace and quiet welding slag of every weldering carries out reverse side with gouge after 2 layers of welding
Back chipping removes welding slag, guarantees welding quality, the extra meat angle grinder of weldering is levelling, then welds next layer, and postwelding carries out weldquality inspection
It looks into；
5) after drying machine welding passed examination, cylinder is integrally dropped down onto forward and backward support roller group by cylinder of jack-uping
On, and remove temporary support；
Step 5, transmission device installation；
1) the installation gradient of transmission device is consistent with cylinder: pinion gear, gear wheel and pinion gear are installed on the basis of gear ring
Top side gap be 0.25M+2~3mm, M is modulus；
2) progress is pre-assembled before bull gear installation, and 2 half-ring gear joints fit closely, interface surrounding 0.04mm clearance gauge energy
Enough parts are filled in, and are filled in length≤perimeter 1/5, are filled in depth≤100mm；The position franchise that bull gear is mounted on cylinder is
±2mm；Bull gear be installed on cylinder after radial run-out franchise≤2.0mm, Circular Run-out Tolerance franchise≤2.0mm；
3) pinion gear installation site franchise is ± 2mm；The axis of pinion gear is parallel with cylinder longitudinal centre line；Adjust canine tooth
The contact area and tip clearance of wheel and pinion gear, face spot are no less than 40% along tooth height, long by no less than 50% along tooth；
4) speed reducer and motor are installed according to pinion positions；
Step 6, the installation of cylinder sealing device；
1) sealing device is fixed on furnace body before, concentricity tolerance≤3mm of retainer plate and barrel end；Sealing dress afterwards
It sets and is fixed on hood, concentricity tolerance≤3mm of retainer plate and barrel end；
Step 7 after being all installed, can be in the milk.
When the step 1 bearing plate is installed, specifically:
1) at least one group backing plate beside each foundation bolt；Backing plate is disposed adjacent to foundation bolt and the main forced section of pedestal
The lower section of position；Spacing≤500mm of adjacent 2 groups of backing plates；
2) it) bears to use pairs of inclined sizing block as backing plate at load, welds inclined sizing block after leveling；
3)) the parallels number in each group of backing plate must not exceed 4 pieces, and when placing plain cushion iron, thick is placed in the following, thin is placed on
Centre welds fixation with tack welding between each block of parallels；
4) it) after the device leveling on backing plate, is tapped by group with hand hammer and carries out audition inspection, guarantee to compress between parallels；Pad
Iron end face is all exposed device bottom surface outer rim, and plain cushion iron exposes 10~30mm, and inclined sizing block exposes 10~50mm, and backing plate protrudes into device bottom
The length in face is more than the center of equipment anchor bolt.
Compared with prior art, the beneficial effects of the present invention are:
1) operating process is simple and easy, and directiveness is strong, and when installation is all made of conventional equipment, and installation cost is low, installation accuracy
It is high；
2) centering group pair is carried out to cylinder using invention the method, improving the concentricity of cylinder entirety, (former standardize is wanted
Concentricity and straightness≤5mm are asked, 2mm is actually reached), by guaranteeing the precision of Cylinder assembly, it is big to improve pellet dryer
The installation accuracy of gear ring makes the circular runout precision of bull gear greatly improve (the pellet dryer tooth of 4.2 rice diameter of code requirement
Circular runout≤2mm is enclosed, practical in 1mm), that is, improve equipment integral installation precision；
3) present invention first carries out centering to supporting roller base, and then cylinder is organized pair online using supporting roller base, has saved construction space,
Lifting expense is saved, improving construction efficiency, (routinely construction method, cylinder need to carry out in the vacant lot of construction area side
After the completion of welding, recycling is double to lift up into capable lifting, and drying machine workshop steel structure need to could construct after cylinder is installed,
I.e. conventional construction method can generate secondary lifting expense, and will affect the construction period of workshop steel structure).
Specific embodiment
A kind of installation method of pellet dryer tilting rotary table cylinder of the present invention, includes the following steps:
Step 1: bearing plate is installed；
According to GB50231-2009 " code for construction and acceptance of mechanical equipment installation engineering ", specification, the quantity of backing plate are determined
And riding position, since the cylinder of drying machine has gradient, when placing backing plate using seat slurry processes, using the angle of manufactory's offer
Degree block and level are checked that backing plate upper surface altitude limit deviation is 0~0.5mm；
Step 2: support roller group is installed；
1) forward and backward 2 support roller groups are lifted respectively to correspondence, and makes the longitudinal centre line of support roller group pedestal, cross
To center line respectively with the longitudinal centre line on corresponding basis, cross central line to just；
2) according to the preceding support roller group of longitudinal reference line centering, the lengthwise position of rear support roller group, the longitudinal center of support roller group before making
Line and the longitudinal centre line of rear support roller group in line, and are overlapped with longitudinal reference line；The longitudinal direction of preceding support roller group and rear support roller group
Center is ± 3mm away from tolerance；
3) lateral position of preceding support roller group, rear support roller group is adjusted according to transverse reference line, tolerance is ± 0.5mm；
4) according to absolute altitude reference line, cooperated using precision level and scale, be with bottom center's point of support roller group pedestal
Standard adjusts the center height with group bearing of conveyor idler seat, tolerance≤0.1mm/m；
5) cooperated using slope gage and level meter, adjust the gradient of each support roller；
6) after support roller group is installed, back-grouting is carried out to support roller group foundation bolt；
Step 3: support roller circle installation；
1) support roller circle center line is marked on cylinder, between cylinder high temperature position, backing ring center line and support roller center line
Stay the pre- allowance of thermal expansion；
2) before Barrel hoisting, by the assembly of support roller circle on cylinder；Wheel belt Circular Run-out Tolerance≤2mm of support roller circle, support roller circle
Wheel belt radial run-out≤1mm；
3) the reserved expansion clearance between support roller circle and stiffening ring are as follows: temperature end preset clearance: 2.5~3mm, low-temperature end are reserved
Gap: 1.5~2mm；
Step 4: Cylinder assembly；
1) it will be backfilled and made firm by ramming around basis, tamped, set 4 along the longitudinal centerline in cylinder installation site and face
When support, i.e., 4 rocker bearings are manufactured according to cylinder form fit；
2) cylinder is divided into 2 sections, hangs onto temporary support 2 sections of cylinders respectively with crawler crane, is provided with thrust gear wheel
Cylinder section lifting it is in place after installation gear wheel carry out it is longitudinally fixed, then on the basis of the cylinder section for being equipped with thrust gear wheel, adjustment
Another section of cylinder, cylinder nonstraightness and docking weld bond after making 2 sections of cylinder docking meet demand of technical standard；Cylinder assembly is completed
Afterwards, rolling ring and support roller contact surface length are not less than the 70% of its face length；
3) after cylinder docking weld bond is adjusted in place, centralized positioning is carried out using laser collimator, rotating cylinder detects cylinder
The radial run-out value at center, and meet the following conditions: at bull gear and rolling ring the radial run-out value of body centre≤
4mm；Radial run-out value≤6mm of body centre at barrel head, tail；The radial run-out value of remaining position body centre≤
8mm；
4) height for adjusting 2 sections of cylinders when tube roller mill using jack, using hoist engine and pulley as interim transmission
System rotates cylinder around center line, guarantees that the unfitness of butt joint of 2 sections of cylinders is not overproof；It is detected using laser collimator, guarantees 2 sections of cylinders
The Concentricity tolerance in body centre≤φ 6mm, Concentricity tolerance≤φ 4mm at stiffening ring, cylinder and backing ring, gear ring it is same
Heart degree deviation≤1mm, it is above items passed examination after carry out 2 sections of cylinders butt welding；Using manual electric arc welding, downhand welding and balanced welding
Method, per pass fusion length are the 1/8 of perimeter, are often soldered one of weld seam, weld down one of weld seam, 2 sections of welderings again for 180 ° of cylinder rotation
It is staggered between seam 90 °~180 °；Weld seam uses multiple-bead deposit, and one layer of peace and quiet welding slag of every weldering carries out reverse side with gouge after 2 layers of welding
Back chipping removes welding slag, guarantees welding quality, the extra meat angle grinder of weldering is levelling, then welds next layer, and postwelding carries out weldquality inspection
It looks into；
5) after drying machine welding passed examination, cylinder is integrally dropped down onto forward and backward support roller group by cylinder of jack-uping
On, and remove temporary support；
Step 5, transmission device installation；
1) the installation gradient of transmission device is consistent with cylinder: pinion gear, gear wheel and pinion gear are installed on the basis of gear ring
Top side gap be 0.25M+2~3mm, M is modulus；
2) progress is pre-assembled before bull gear installation, and 2 half-ring gear joints fit closely, interface surrounding 0.04mm clearance gauge energy
Enough parts are filled in, and are filled in length≤perimeter 1/5, are filled in depth≤100mm；The position franchise that bull gear is mounted on cylinder is
±2mm；Bull gear be installed on cylinder after radial run-out franchise≤2.0mm, Circular Run-out Tolerance franchise≤2.0mm；
3) pinion gear installation site franchise is ± 2mm；The axis of pinion gear is parallel with cylinder longitudinal centre line；Adjust canine tooth
The contact area and tip clearance of wheel and pinion gear, face spot are no less than 40% along tooth height, long by no less than 50% along tooth；
4) speed reducer and motor are installed according to pinion positions；
Step 6, the installation of cylinder sealing device；
1) sealing device is fixed on furnace body before, concentricity tolerance≤3mm of retainer plate and barrel end；Sealing dress afterwards
It sets and is fixed on hood, concentricity tolerance≤3mm of retainer plate and barrel end；
Step 7 after being all installed, can be in the milk.
When the step 1 bearing plate is installed, specifically:
1) at least one group backing plate beside each foundation bolt；Backing plate is disposed adjacent to foundation bolt and the main forced section of pedestal
The lower section of position；Spacing≤500mm of adjacent 2 groups of backing plates；
2) it) bears to use pairs of inclined sizing block as backing plate at load, welds inclined sizing block after leveling；
3)) the parallels number in each group of backing plate must not exceed 4 pieces, and when placing plain cushion iron, thick is placed in the following, thin is placed on
Centre welds fixation with tack welding between each block of parallels；
4) it) after the device leveling on backing plate, is tapped by group with hand hammer and carries out audition inspection, guarantee to compress between parallels；Pad
Iron end face is all exposed device bottom surface outer rim, and plain cushion iron exposes 10~30mm, and inclined sizing block exposes 10~50mm, and backing plate protrudes into device bottom
The length in face is more than the center of equipment anchor bolt.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (2)
1. a kind of installation method of pellet dryer tilting rotary table cylinder, which comprises the steps of:
Step 1: bearing plate is installed；
According to GB50231-2009 " code for construction and acceptance of mechanical equipment installation engineering ", the specification, quantity and peace of backing plate are determined
Position is put, since the cylinder of drying machine has gradient, when placing backing plate using seat slurry processes, using the angle block gauge of manufactory's offer
And level is checked, backing plate upper surface altitude limit deviation is 0~0.5mm；
Step 2: support roller group is installed；
1) forward and backward 2 support roller groups are lifted respectively to correspondence, and makes the longitudinal centre line of support roller group pedestal, in transverse direction
Heart line is respectively with the longitudinal centre line on corresponding basis, cross central line to just；
2) according to the preceding support roller group of longitudinal reference line centering, the lengthwise position of rear support roller group, before making the longitudinal centre line of support roller group with
The longitudinal centre line of support roller group in line, and is overlapped with longitudinal reference line afterwards；The longitudinal center of preceding support roller group and rear support roller group
It is ± 3mm away from tolerance；
3) lateral position of preceding support roller group, rear support roller group is adjusted according to transverse reference line, tolerance is ± 0.5mm；
4) according to absolute altitude reference line, cooperated using precision level and scale, be subject to bottom center's point of support roller group pedestal, adjusted
The whole center with group bearing of conveyor idler seat is high, tolerance≤0.1mm/m；
5) cooperated using slope gage and level meter, adjust the gradient of each support roller；
6) after support roller group is installed, back-grouting is carried out to support roller group foundation bolt；
Step 3: support roller circle installation；
1) support roller circle center line is marked on cylinder, stays heat between cylinder high temperature position, backing ring center line and support roller center line
Expand pre- allowance；
2) before Barrel hoisting, by the assembly of support roller circle on cylinder；Wheel belt Circular Run-out Tolerance≤2mm of support roller circle, the wheel of support roller circle
Band radial run-out≤1mm；
3) the reserved expansion clearance between support roller circle and stiffening ring are as follows: temperature end preset clearance: 2.5~3mm, between low-temperature end is reserved
Gap: 1.5~2mm；
Step 4: Barrel hoisting and group pair；
1) it will be backfilled and made firm by ramming around basis, tamped, set 4 interim branch along the longitudinal centerline in cylinder installation site
Support, i.e., manufacture 4 rocker bearings according to cylinder form fit；
2) cylinder is divided into 2 sections, hangs onto temporary support 2 sections of cylinders respectively with crawler crane, is provided with the cylinder of thrust gear wheel
Installation gear wheel carries out longitudinally fixed after the lifting of body section is in place, then on the basis of the cylinder section for being equipped with thrust gear wheel, adjusts another
Section cylinder, cylinder nonstraightness and docking weld bond after making 2 sections of cylinder docking meet demand of technical standard；After the completion of Cylinder assembly,
Rolling ring and support roller contact surface length are not less than the 70% of its face length；
3) after cylinder docking weld bond is adjusted in place, centralized positioning is carried out using laser collimator, rotating cylinder detects body centre
Radial run-out value, and meet the following conditions: radial run-out value≤4mm of body centre at bull gear and rolling ring；?
Radial run-out value≤6mm of body centre at barrel head, tail；Radial run-out value≤8mm of remaining position body centre；
4) height for adjusting 2 sections of cylinders when tube roller mill using jack, using hoist engine and pulley as interim transmission system
It rotates cylinder around center line, guarantees that the unfitness of butt joint of 2 sections of cylinders is not overproof；It is detected, is guaranteed in 2 sections of cylinders using laser collimator
The Concentricity tolerance of center portion position≤φ 6mm, Concentricity tolerance≤φ 4mm at stiffening ring, the concentricity of cylinder and backing ring, gear ring
Deviation≤1mm, it is above items passed examination after carry out 2 sections of cylinders butt welding；Using manual electric arc welding, downhand welding and symmetric method,
Per pass fusion length is the 1/8 of perimeter, is often soldered one of weld seam, and cylinder rotation is welded down one of weld seam for 180 ° again, 2 sections of weld seams it
Between be staggered 90 °~180 °；Weld seam uses multiple-bead deposit, and one layer of peace and quiet welding slag of every weldering carries out back root cleaning with gouge after 2 layers of welding
Welding slag is removed, guarantees welding quality, the extra meat angle grinder of weldering is levelling, then welds next layer, and postwelding carries out weldquality inspection；
5) after drying machine welding passed examination, cylinder of jack-uping integrally is dropped down onto cylinder in forward and backward support roller group,
And remove temporary support；
Step 5, transmission device installation；
1) the installation gradient of transmission device is consistent with cylinder: pinion gear, the top of gear wheel and pinion gear are installed on the basis of gear ring
Side clearance is 0.25M+2~3mm, and M is modulus；
2) progress is pre-assembled before bull gear installation, and 2 half-ring gear joints fit closely, and interface surrounding 0.04mm clearance gauge being capable of office
Portion fills in, and fills in length≤perimeter 1/5, fills in depth≤100mm；Bull gear be mounted on the position franchise on cylinder be ±
2mm；Bull gear be installed on cylinder after radial run-out franchise≤2.0mm, Circular Run-out Tolerance franchise≤2.0mm；
3) pinion gear installation site franchise is ± 2mm；The axis of pinion gear is parallel with cylinder longitudinal centre line；Adjust gear wheel with
The contact area and tip clearance of pinion gear, face spot are no less than 40% along tooth height, long by no less than 50% along tooth；
4) speed reducer and motor are installed according to pinion positions；
Step 6, the installation of cylinder sealing device；
1) sealing device is fixed on furnace body before, concentricity tolerance≤3mm of retainer plate and barrel end；Sealing device is solid afterwards
It is scheduled on hood, concentricity tolerance≤3mm of retainer plate and barrel end；
Step 7 after being all installed, can be in the milk.
2. a kind of installation method of pellet dryer tilting rotary table cylinder according to claim 1, which is characterized in that described
When step 1 bearing plate is installed, specifically:
1) at least one group backing plate beside each foundation bolt；Backing plate is disposed adjacent to foundation bolt and the main force part of pedestal
Lower section；Spacing≤500mm of adjacent 2 groups of backing plates；
2) it) bears to use pairs of inclined sizing block as backing plate at load, welds inclined sizing block after leveling；
3)) the parallels number in each group of backing plate must not exceed 4 pieces, thick to be placed in the following, thin be placed on when placing plain cushion iron
Between, fixation is welded with tack welding between each block of parallels；
4) it) after the device leveling on backing plate, is tapped by group with hand hammer and carries out audition inspection, guarantee to compress between parallels；Parallels end
Face is all exposed device bottom surface outer rim, and plain cushion iron exposes 10~30mm, and inclined sizing block exposes 10~50mm, and backing plate protrudes into device bottom surface
Length is more than the center of equipment anchor bolt.
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| CN201910537750.5A CN110332797A (en) | 2019-06-20 | 2019-06-20 | A kind of installation method of pellet dryer tilting rotary table cylinder |
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| CN201910537750.5A CN110332797A (en) | 2019-06-20 | 2019-06-20 | A kind of installation method of pellet dryer tilting rotary table cylinder |
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