CN107364692B - Screw conveyor - Google Patents
Screw conveyor Download PDFInfo
- Publication number
- CN107364692B CN107364692B CN201610318800.7A CN201610318800A CN107364692B CN 107364692 B CN107364692 B CN 107364692B CN 201610318800 A CN201610318800 A CN 201610318800A CN 107364692 B CN107364692 B CN 107364692B
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- Prior art keywords
- outer shaft
- screw conveyor
- shaft
- inner shaft
- driving member
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- 239000000463 material Substances 0.000 claims abstract description 49
- 238000001816 cooling Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002826 coolant Substances 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 8
- 239000010962 carbon steel Substances 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 7
- 239000000110 cooling liquid Substances 0.000 claims description 5
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 2
- 239000000498 cooling water Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 6
- 239000003245 coal Substances 0.000 description 6
- 238000000197 pyrolysis Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 235000019628 coolness Nutrition 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000007363 ring formation reaction Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/08—Screw or rotary spiral conveyors for fluent solid materials
- B65G33/14—Screw or rotary spiral conveyors for fluent solid materials comprising a screw or screws enclosed in a tubular housing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/32—Adaptations of bearings or couplings for supporting and connecting screws
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G33/00—Screw or rotary spiral conveyors
- B65G33/24—Details
- B65G33/34—Applications of driving gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Screw Conveyors (AREA)
Abstract
The invention discloses a kind of screw conveyors, including rotating electric machine (1), inner shaft (2), driving member (3), outer shaft (4) and blade (8), inner shaft is water cooling hollow shaft, it is outer to be formed between interior outer shaft for heat-insulated spaced radial space to be sheathed on to outer shaft spaced radial inner shaft, and is disposed with driving member in spaced radial space with the interior outer shaft that is sequentially connected；Wherein, screw conveyor is equipped with feed inlet (53) and discharge port (54), rotating electric machine drives inner shaft rotation, and then drives outer shaft and blade to rotate by driving member, so that the high-temperature material entered from feed inlet flows out under the action of blade from discharge port.This screw conveyor can longtime running at high temperature, guarantee the rigidity of structure and intensity；Greatly reduce simultaneously thermally conductive between interior outer shaft, the cooling water that can avoid inner shaft takes away the amount of heat of high-temperature material；Outer shaft is primarily subjected to high temperature, and stress torsional forces is small, selects conventional high temperature resistant material that can run at high temperature for a long time.
Description
Technical field
The invention belongs to high-temperature material conveying equipment field, a kind of particularly helix transporting device.
Background technique
In the fields such as low order pyrolysis of coal, often need to convey 600~800 DEG C of high-temperature particle shape object between distinct device
Material.Due to material high temperature, it is inflammable the features such as, conveying equipment needs while meeting the conveying of high temperature resistant and closed two conditions to set
It is standby.
Since screw conveyor has many advantages, such as that conveying capacity is big, sealing characteristics are good, thus obtained in material transportation art
It is widely applied, although normal spiral conveyer air-proof condition is preferable, but heat resistance is insufficient, permanent worker under hot environment
Make to be easy main shaft the damaging property structural failure to driving torque and high temperature is born simultaneously.
The types of cooling such as direct water-cooling, such as patent publication are carried out frequently with to main shaft in the prior art
A kind of high-temperature spiral conveyor is disclosed in CN102514895A, the screw conveyor shaft (i.e. main shaft) of the high-temperature spiral conveyor is
Hollow shaft, both ends connect water inlet pipe and outlet pipe by rotary joint respectively, and further, the shell of high-temperature spiral conveyor is
Interior outer double-layer structure, folder inner layer space lead to cooling water.Auger conveyor is reduced using the method for screw conveyor shaft, the double water coolings of shell
The temperature of main component improve service life of equipment to reduce the damage of auger conveyor, guarantee 800~1000 DEG C of height
The normal conveying of warm material.The heat resistance of main shaft, but this water cooling although can be improved by the similar main shaft type of cooling
Mode has also taken away the larger heat of high-temperature material, keeps the material temperature difference at material entry and exit larger, seriously affects craftsmanship
Energy.Therefore, the two of structure high temperature resistant and material low heat emission is mainly faced applied to the screw conveyor of high-temperature material transportation art
A conflicting requirement.
Summary of the invention
It can have both that high temperature resistant, structural behaviour be good and the multiple performance of material low heat emission the object of the present invention is to provide one kind
Screw conveyor.
To achieve the above object, the present invention provides a kind of screw conveyor, including rotating electric machine, inner shaft, driving member,
Outer shaft and blade, the inner shaft are water cooling hollow shaft, and it is outer described outer to be sheathed on to the outer shaft spaced radial inner shaft
It is formed between axis and inner shaft and is used to heat-insulated spaced radial space, and be disposed with the transmission structure in the spaced radial space
Part is with the inner shaft and the outer shaft of being sequentially connected；
Wherein, the screw conveyor is equipped with inlet port and outlet port, and the rotating electric machine drives the inner shaft rotation, into
And the outer shaft and blade rotation are driven by the driving member, so that work of the high-temperature material entered from feed inlet in blade
It is flowed out under from discharge port.
Preferably, heat-barrier material is filled in the spaced radial space between the inner shaft and outer shaft.
Preferably, the screw conveyor includes the multiple driving members being distributed along the axially spaced-apart of the inner shaft,
Each driving member includes multiple drive rods of circumferentially spaced arrangement, and the drive rod is from the periphery wall of the inner shaft along diameter
To extending out to the internal perisporium for connecting the outer shaft.
Preferably, the outer shaft is heat resisting steel material, and the inner shaft is carbon steel or low-alloy steel material.
Preferably, the wall thickness of the outer shaft is 8mm~10mm.
Preferably, the outer shaft includes multiple outer shaft parts, is connected between the outer shaft part of adjacent two by connection ring,
The driving member is connected to the internal perisporium of the connection ring.
Preferably, the contact surface between the connection ring and the outer shaft part is equipped with thermal resistance gasket.
It preferably, is keyway connection or flanged joint between the connection ring and the outer shaft part.
Preferably, the internal perisporium of the connection ring is protruding with and the multiple connections correspondingly of multiple drive rods
, card slot is formed in the attachment base, the radial extremity of the drive rod can be pushed into along the card slot along axial, make the biography
Dynamic component is detachably connected with connection ring formation.
Preferably, the keyway internal perisporium of the attachment base is equipped with thermal resistance gasket.
Preferably, the driving member and the connection ring are integrally formed.
Preferably, circumferentially spaced on the periphery wall of the connection ring that multiple blades are installed.
Preferably, the screw conveyor further includes outer housing, and closing conveyor chamber, the inner shaft are formed in the outer housing
It being arranged in the closing conveyor chamber with outer shaft, the screw conveyor is additionally provided with coolant inlet and cooling liquid outlet, so that
Coolant liquid flows through the inner shaft.
Preferably, the temperature of the high-temperature material is not less than 300 DEG C.
In screw conveyor of the invention, using the drive mechanism of inside and outside twin shaft, the rotation of motor driven inner shaft, inner shaft
Outer shaft rotation is driven by driving member, wherein inner shaft bears direct-drive torque as main stress part, passes through water cooling sky
The structure of mandrel realizes water cooling, so as to longtime running at high temperature, guarantees the rigidity of structure and intensity；Simultaneously driving member with
The contact area of outer shaft is small, greatly reduces the heat transfer between interior outer shaft, and the cooling water that can avoid inner shaft takes away high-temperature material
Amount of heat；Outer shaft is primarily subjected to high temperature, and stress torsional forces is small, selects conventional high temperature resistant material that can transport at high temperature for a long time
Row.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
The drawings are intended to provide a further understanding of the invention, and constitutes part of specification, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram according to the screw conveyor of the preferred embodiment of the present invention；
Fig. 2 is cross-sectional profiles figure of the screw conveyor shown in FIG. 1 at driving member；
Fig. 3 illustrates the connection structure between connection ring in a preferred embodiment and outer shaft part.
Description of symbols
1 rotating electric machine, 2 inner shaft
3 driving member, 4 outer shaft
The outer shaft part of 31 drive rod 41
51 coolant inlet, 52 cooling liquid outlet
53 feed inlet, 54 discharge port
6 heat-barrier material, 7 connection ring
71 attachment base, 72 connecting key
8 blade, 9 thermal resistance gasket
10 outer housings
Specific embodiment
Below in conjunction with attached drawing, detailed description of the preferred embodiments.It should be understood that this place is retouched
The specific embodiment stated is merely to illustrate and explain the present invention, and is not intended to restrict the invention.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, top, bottom " is usually needle
For direction shown in the drawings either for it is vertical, on vertical or gravity direction for each component mutual alignment relation
Word is described；" inside and outside " is commonly referred to as radially inner and outer inside and outside the chamber for chamber or for the center of circle.
The above-mentioned noun of locality is to define to facilitate the understanding of the present invention, because without constituting limiting the scope of the invention.
It often needs to convey 600~800 DEG C or so of high-temperature material in fields such as low order pyrolysiss of coal, while to control and convey
The temperature drop of journey material avoids influencing subsequent technique, and conveying equipment needs long-term uninterrupted operation, to ensure low order pyrolysis of coal
The operation steady in a long-term of system.Therefore conventional screw conveyor etc. is difficult to be applicable in, and structure stress part (such as main shaft) is in height
Longtime running is easy to produce partial structurtes damage under warm environment, or is easy to take away the big calorimetric of high-temperature material under water-cooling pattern
Amount, to not meet subsequent technique requirement.
For this purpose, the present invention provides a kind of New screw conveyers, as shown in Figure 1, the screw conveyor includes electric rotating
Machine 1, inner shaft 2, driving member 3, outer shaft 4 and blade 8, inner shaft 2 are water cooling hollow shaft, are covered to 4 spaced radial certain distance of outer shaft
It is used to heat-insulated spaced radial space except inner shaft 2 to be formed between outer shaft 4 and inner shaft 2, and in spaced radial space
In be disposed with driving member 3 be sequentially connected inner shaft 2 and outer shaft 4；Wherein, screw conveyor is equipped with feed inlet 53 and discharge port
54, rotating electric machine 1 drives inner shaft 2 to rotate, and then drives outer shaft 4 and blade 8 to rotate by driving member 3, so that from feed inlet
53 high-temperature materials entered flow out under the action of blade 8 from discharge port 54.
As total inventive concept, the present invention has comprehensively considered the delivery requirements of high-temperature material (at least 300 DEG C or more),
Specific aim analysis is carried out to different parts such as main shaft of screw conveyor, blades, different resistance to mild radiating requirements is considered, takes
Two kinds of demands of stress and heatproof suitably separate the method undertaken by different parts.This new type high temperature screw conveyor can be significant
The stiffness and strength for guaranteeing main shaft and blade in the case where reducing material heat dissipation capacity, improve high-temperature working performance.
Specifically, inner shaft 2 is used as primary structure stressed member, bears biggish direct torque, if primary structure stressed member is long
Phase works under high temperature environment, inevitably results in damage, therefore inner shaft 2 uses water cooling hollow shaft, one end of inner shaft 2 is connected with cold
But liquid entrance 51, the other end are connected with cooling liquid outlet 52, so that coolant liquid flows through inner shaft 2 and cools down to it, to guarantee inner shaft 2
The rigidity of structure and intensity.The outer wall of outer shaft 4 directly contacts high-temperature material, and surface temperature is high, to reduce the heat between interior outer shaft
Conduction to avoid the excessive heat for taking away high-temperature material, the present invention make between radially spaced inside and outside axis by driving member 3 into
Row is stably rotated transmission.Contact area between driving member 3 and the internal perisporium of outer shaft 4 is small, and conduction heat is relatively smaller, simultaneously
Can also partial structurtes reinforcing etc. be carried out to contact portion, so that the outer shaft 4 for being subjected only to indirect torque is further reduced stress, improved
The stress performance of outer shaft 4, the material that need to only use high temperature resistance strong.
It, can also spaced radial space between inner shaft 2 and outer shaft 4 for the heat transfer further completely cut off between interior outer shaft
It is interior to be filled with heat-barrier material 6 etc., to form annular heat layer, strengthen interior outer shaft heat insulation.
As shown in Fig. 2, driving member 3 preferably uses such as plate-like driving member, example in a kind of preferred constructive form
As drive plate improves transmission performance so that the transmission between interior outer shaft radially and axially is uniform.This drive plate is at least
Multiple drive rods 31 (Fig. 2 is four) including circumferentially spaced arrangement, which radially stretches from the periphery wall of inner shaft 2
Out to the internal perisporium for connecting outer shaft 4.Drive rod 31 can be welded direct on the periphery wall of inner shaft 2, can also pass through the interior of drive plate
Circle part is sleeved on the periphery wall of inner shaft 2.In Fig. 2, which only includes four drive rods 31, without including disk body,
The inner end of drive rod 31 is welded in 2 outer wall of inner shaft.Four drive rods 31 composition driving member 3 relative to complete drive plate and
Speech, the contact area between outer shaft 4 is smaller, reduces heat transfer area.
As main bearing member, inner shaft 2 works in water cooling environment preferably using materials such as carbon steel or low-alloy steel
Under, to guarantee structural strength and rigidity.As main heat-resistant component, outer shaft 4 preferably uses such as heat resisting steel material, to bear to grow
The hot environment of phase.But since to bear torsional forces small for outer shaft 4, the design of wall thickness can be greatly reduced, the wall thickness of outer shaft 4 can be from existing
35mm or more be reduced to about 8mm~10mm so that structure lightened.
Further, the torsional forces that outer bearing is received is transmitted and reduced for the heat in reducing between outer shaft, in present embodiment
Outer shaft use segmented version.I.e. outer shaft 4 includes multiple outer shaft parts 41, passes through connection ring between the outer shaft part 41 of adjacent two
7 are connected, and driving member 3 is connected to the internal perisporium of connection ring 7.By adding the connection ring 7 as intermediate transmission component, interior outer shaft
Between heat-transfer path on be formed with more contact surfaces, contact surface can weaken heating conduction, constitute thermal contact resistance, cause in
Conductivity of heat between outer shaft subtracts greatly.Further, as shown in figure 3, in contact surface between connection ring 7 and outer shaft part 41
It is additionally provided with thermal resistance gasket 9, to enhance thermal insulation.
It will be appreciated to those of skill in the art that between connection ring 7 and outer shaft part 41 can there are many connection type, such as
It in Fig. 3, is connected between connection ring 7 and outer shaft part 41 for keyway, the end that the key teeth of 7 two sides of connection ring is embedded in outer shaft part 41 is recessed
In slot.On the circumferentially spaced end outer peripheral edge that outer shaft part 41 is set of multiple grooves therein, after keyway cooperation, connection ring 7
Outer surface flushed with the outer surface of outer shaft part 41.Thermal resistance gasket 9 not only completely cuts off the heat transfer on contact surface, also fills up seam
Gap prevents material from filling in keyway slots.Furthermore in the case where reinforcing the anti-loose periodic maintenance to fastener etc., connection ring
It is also possible to such as flanged joint between 7 and outer shaft part 41, it is not described in detail herein.
In Fig. 3, drive rod 31 is preferably an integral molding structure with connection ring 7, and 8 edge of multiple blades of screw conveyor
On the circumferentially-spaced periphery wall for being mounted on connection ring 7, so that root of blade can be cooled down preferably, improve work shape
Condition.
But similarly, it is also possible to mutually independent component between drive rod 31 and connection ring 7.For example, with reference to Fig. 2, even
Connect ring 7 internal perisporium be protruding with the one-to-one multiple attachment bases 71 of multiple drive rods 31, be formed in the attachment base 71
The radial extremity of card slot, drive rod 31 can be such that driving member 3 is formed with connection ring 7 and detachably connect along axial push-in card slot
It connects.This just further forms more contact surfaces on the heat-transfer path between interior outer shaft, while in the keyway of attachment base 71
Peripheral wall can also be equipped with thermal resistance gasket 9, further increase thermal contact resistance.
Fig. 1 is returned to, this New screw conveyer further includes outer housing 10, it is formed with closing conveyor chamber in the outer housing 10,
Inner shaft 2 and outer shaft 4 are arranged in closing conveyor chamber, and one end of inner shaft 2 connects coolant inlet 51, and other end connection coolant liquid goes out
Mouth 52 makes coolant liquid flow through inner shaft 2, and the top of one end of outer housing 10 is equipped with feed inlet 53, and the bottom of the other end is equipped with discharging
Mouth 54.When normal work, high-temperature material enters in closing conveyor chamber from feed inlet 53, and motor 1 drives inner shaft 2 to rotate, Jin Ertong
Crossing driving member 3 drives outer shaft 4 and blade 8 to rotate, by the high-temperature material helical feed at 53 end of feed inlet to 54 end of discharge port.Together
When, cooling water enters inner shaft 2 through coolant inlet 51, flows after through cooling liquid outlet 52 by the heat exchange with interior axial wall plane
Out, the even root of blade of inner shaft 2 is cooled down.Outer shaft 4 is always under the hot environment, due to there are thermal contact resistance and filling out
The heat-barrier material 6 filled, the heat dissipation of high-temperature material is not by outer shaft 4, inner shaft 2 and coolant liquid heat exchange, so that high-temperature material exists
The thermal loss closed in conveyor chamber is small.
In screw conveyor of the invention, heat transfer area is reduced, and big portion's insulation, can be significantly reduced biography between inside and outside axis
Heat；Resistance to mild force structure mutually separates, and outer shaft 4 operating temperature is high, using heat-resisting steel construction, improves heat resistance.2 work of inner shaft
It is low to make temperature, transmits power, bears torque；Root of blade is cooled, and can reduce operating temperature, improves blade working feelings
Condition.
Be applied to pyrolytic process of coal in when, from upper level equipment come 800 DEG C of pyrolysis of coal materials by feed inlet 53 into
Enter in the closing conveyor chamber in shell 10, discharge port 54 is pushed under the rotation of blade 8 and enters next stage equipment.Wherein,
Make the outer work of shaft part 41 in 600~800 DEG C of states close to temperature of charge.Outer shaft part 41 is using matched heat-resisting with temperature of charge
Active force between stainless steel, with material is mutual frictional force, and thickness is determined by wear resistance at elevated temperature.Inner shaft 2
Using structural carbon steel or low-alloy steel, section driving torque needed for screw conveyor is determined.In the cooling of cooling water
Under effect, at normal temperature, the temperature of connection ring 7 and blade 8 successively increases outward from axle center, leaf for inner shaft 2 and the work of drive member 3
For piece root temperature close to room temperature, vane tip temperature can achieve 200~400 DEG C, and the active force between blade 8 and material is phase
Pressure and frictional force between mutually, structure and thickness are determined by moment of flexure, shearing force, the wear-resisting property etc. during driving, and are connected
It connects ring 7 and heat-resistance stainless steel manufacture can be used in blade 8.
Main heat transfer channel in screw conveyor is that blade 8 and connection ring 7 are cold into inner shaft 2 by driving member 3
But the heat transfer of water by the contact area between control driving member 3 and connection ring 7, and utilizes the thermal coefficient of thermal resistance gasket 9
It can control the operating temperature of heat output and outer shaft part 41 and blade 8 in the reasonable scope with parameters such as thickness.
In the present invention, it is mutually separated due to heat resistant requirements with rigidity supporting structure, heat resisting steel outer shaft and water cooling is respectively adopted
Carbon steel inner shaft reduces the overall selection of axis body by several grades.Heat resisting steel outer shaft bears and transmits torque due to not needing
And moment of flexure, only consider high-temperature wearable demand, greatly improve its stress condition, in 800 DEG C of pyrolysis of coal semicoke conditions of conveying for a long time
Under, wall thickness can be reduced to 8~10mm left and right horizontal, and origianl wall thickness is designed as 35mm or so.Carbon steel inner shaft is by good water
Cold, average operating temperature is 30~35 DEG C, core pipe caliber and section can be made to reduce with the allowable stress of 100MPa or more, and
Carbon steel is cheap, so that overall cost is low.
Space between outer shaft and inner shaft is filled using heat-insulating material, has sufficiently blocked radiation and convective heat transfer, meanwhile, it adopts
The passage of heat area of the relatively direct water cooling of the passage of heat formed with the driving member 3 of step-by-step arrangement is decreased to 5% or so, considers further that
To the thermal contact resistance between components, overall heat transfer amount can be reduced to 5%~3% level of direct water-cooling mode, make to pass
Material temperature difference during passing is reduced to 5~10 DEG C from 100~200 DEG C, and the influence to subsequent technique greatly weakens.And due to
Heat radiation power reduces, and consumption of cooling-water is also kept to 5% or so of direct water-cooling structure, reduces water consume.
The structure mutually separated using heat resisting steel outer shaft with water cooling carbon steel inner shaft becomes axis body point from single oval rod structure
The multicomponent structure of section, facilitates follow-up maintenance and replacement disabling portion, and structure service life can extend to direct water-cooling or complete
The several times of heat-resisting steel construction；Although increasing part manufacturing expense in addition, increasing the segmental structure of driving member 3 and outer shaft 4,
But largely reduce 20% level that heat-resisting steels dosage can make overall cost be reduced to complete heat-resisting rigid structure.
It is described the prefered embodiments of the present invention in detail above in conjunction with attached drawing, still, the present invention is not limited to above-mentioned realities
The detail in mode is applied, within the scope of the technical concept of the present invention, a variety of letters can be carried out to technical solution of the present invention
Monotropic type, such as in fig. 1 and 2, axially spaced apart multiple driving members 3 are connected to the periphery wall of inner shaft 2 and outer
To drive the outer shaft 4 to rotate between the internal perisporium of axis 4.But drive rod 31 can also stretch out in outer shaft 4 or protrude into inner shaft 2；It passes
Dynamic component 3 is also possible to single component, such as is used as interior outer shaft transmission in the spaced radial space being arranged between interior outer shaft
Ribbon.These simple variants belong to displacement that those skilled in the art can readily occur in or conventional, thus belong to the present invention
Protection scope.
It is further to note that specific technical features described in the above specific embodiments, in not lance
In the case where shield, it can be combined in any appropriate way.In order to avoid unnecessary repetition, the present invention to it is various can
No further explanation will be given for the combination of energy.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should also be regarded as the disclosure of the present invention.
Claims (14)
1. a kind of screw conveyor, including rotating electric machine (1), inner shaft (2), driving member (3), outer shaft (4) and blade (8), institute
Stating inner shaft (2) is water cooling hollow shaft, is sheathed on the inner shaft (2) outside in institute to outer shaft (4) the spaced radial certain distance
It states to be formed between outer shaft (4) and inner shaft (2) and is used to heat-insulated spaced radial space, and be disposed in the spaced radial space
The driving member (3) is with the be sequentially connected inner shaft (2) and outer shaft (4)；
Wherein, the screw conveyor is equipped with feed inlet (53) and discharge port (54), and the rotating electric machine (1) drives the inner shaft
(2) it rotates, and then drives the outer shaft (4) and blade (8) rotation by the driving member (3), so that from the feed inlet
(53) high-temperature material entered flows out under the action of the blade (8) from the discharge port (54).
2. screw conveyor according to claim 1, wherein between the radial direction between the inner shaft (2) and outer shaft (4)
Every in space be filled with heat-barrier material (6).
3. screw conveyor according to claim 1, wherein the screw conveyor includes the axis along the inner shaft (2)
To the multiple driving members (3) being spaced apart, each driving member (3) includes multiple biographies of circumferentially spaced arrangement
Lever (31), the drive rod (31) are extended radially from the periphery wall of the inner shaft (2) to the inner circumferential for connecting the outer shaft (4)
Wall.
4. screw conveyor according to claim 1, wherein the outer shaft (4) is heat resisting steel material, the inner shaft (2)
For carbon steel or low-alloy steel material.
5. screw conveyor according to claim 4, wherein the wall thickness of the outer shaft (4) is 8mm~10mm.
6. the screw conveyor according to any one of claim 3~5, wherein the outer shaft (4) includes multiple outer shafts
Section (41) is connected between the outer shaft part (41) of adjacent two by connection ring (7), and the driving member (3) is connected to institute
State the internal perisporium of connection ring (7).
7. screw conveyor according to claim 6, wherein between the connection ring (7) and the outer shaft part (41)
Contact surface is equipped with thermal resistance gasket (9).
8. screw conveyor according to claim 6, wherein be between the connection ring (7) and the outer shaft part (41)
Keyway connection or flanged joint.
9. screw conveyor according to claim 6, wherein the internal perisporium of the connection ring (7) be protruding with it is multiple
The one-to-one multiple attachment bases (71) of the drive rod (31), the attachment base (71) is interior to be formed with card slot, the drive rod
(31) radial extremity can be pushed into the card slot along axial, and forming the driving member (3) and the connection ring (7) can
Dismantling connection.
10. screw conveyor according to claim 9, wherein the keyway internal perisporium of the attachment base (71) is equipped with thermal resistance
Gasket (9).
11. screw conveyor according to claim 6, wherein the driving member (3) and the connection ring (7) one
Molding.
12. screw conveyor according to claim 6, wherein circumferentially spaced peace on the periphery wall of the connection ring (7)
Equipped with multiple blades (8).
13. screw conveyor according to claim 1, wherein the screw conveyor further includes outer housing (10), this is outer
Closing conveyor chamber is formed in shell (10), the inner shaft (2) and outer shaft (4) are arranged in the closing conveyor chamber, the spiral shell
Rotation conveyer is additionally provided with coolant inlet (51) and cooling liquid outlet (52), so that coolant liquid flows through the inner shaft (2).
14. screw conveyor according to claim 1, wherein the temperature of the high-temperature material is not less than 300 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318800.7A CN107364692B (en) | 2016-05-13 | 2016-05-13 | Screw conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610318800.7A CN107364692B (en) | 2016-05-13 | 2016-05-13 | Screw conveyor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107364692A CN107364692A (en) | 2017-11-21 |
| CN107364692B true CN107364692B (en) | 2019-04-02 |
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| CN201610318800.7A Active CN107364692B (en) | 2016-05-13 | 2016-05-13 | Screw conveyor |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040768A (en) * | 1975-03-27 | 1977-08-09 | Jude Engineering Incorporated | Mixing, conveying heating and/or cooling apparatus |
| JPS53146763A (en) * | 1977-05-02 | 1978-12-20 | Gerias As | Cooling or heating apparatus for liquid semmliquid namely highhviscosity material or plastic material |
| CN2141415Y (en) * | 1992-11-16 | 1993-09-01 | 李令义 | Screw conveyer |
| JP3732370B2 (en) * | 1999-10-29 | 2006-01-05 | 株式会社栗本鐵工所 | Continuous kneader |
| CN101269744A (en) * | 2008-05-13 | 2008-09-24 | 中冶京诚工程技术有限公司 | High-temperature water-cooling screw conveyor |
| CN201317787Y (en) * | 2008-12-17 | 2009-09-30 | 于风福 | High temperature material transporting auger |
-
2016
- 2016-05-13 CN CN201610318800.7A patent/CN107364692B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4040768A (en) * | 1975-03-27 | 1977-08-09 | Jude Engineering Incorporated | Mixing, conveying heating and/or cooling apparatus |
| JPS53146763A (en) * | 1977-05-02 | 1978-12-20 | Gerias As | Cooling or heating apparatus for liquid semmliquid namely highhviscosity material or plastic material |
| CN2141415Y (en) * | 1992-11-16 | 1993-09-01 | 李令义 | Screw conveyer |
| JP3732370B2 (en) * | 1999-10-29 | 2006-01-05 | 株式会社栗本鐵工所 | Continuous kneader |
| CN101269744A (en) * | 2008-05-13 | 2008-09-24 | 中冶京诚工程技术有限公司 | High-temperature water-cooling screw conveyor |
| CN201317787Y (en) * | 2008-12-17 | 2009-09-30 | 于风福 | High temperature material transporting auger |
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| CN107364692A (en) | 2017-11-21 |
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