CN208846934U - A kind of directly-heated type rotary kiln - Google Patents
A kind of directly-heated type rotary kiln Download PDFInfo
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- CN208846934U CN208846934U CN201821406436.0U CN201821406436U CN208846934U CN 208846934 U CN208846934 U CN 208846934U CN 201821406436 U CN201821406436 U CN 201821406436U CN 208846934 U CN208846934 U CN 208846934U
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- electrode
- rotary kiln
- return bend
- directly
- brush
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- 239000000463 material Substances 0.000 claims abstract description 54
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 239000007921 spray Substances 0.000 claims description 13
- 238000009413 insulation Methods 0.000 claims description 12
- 238000011084 recovery Methods 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 230000008961 swelling Effects 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000011810 insulating material Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 239000012212 insulator Substances 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 206010000234 Abortion spontaneous Diseases 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 210000000038 chest Anatomy 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000010892 electric spark Methods 0.000 description 1
- 239000012777 electrically insulating material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- 208000015994 miscarriage Diseases 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 208000000995 spontaneous abortion Diseases 0.000 description 1
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- Resistance Heating (AREA)
Abstract
A kind of directly-heated type rotary kiln, including heating power supply, electrode, return bend, resistance to material, the space that resistance to material surrounds are burner hearth.Its electrode includes one or one group anode and one or one group of cathode.Heating power supply applies either ac or dc power pressure between a positive electrode and a negative electrode, it is contacted by electrode with the material that bringing-up section inside rotary kiln is heated, electric current flows through material via heating power supply, anode and arrives cathode again and return to heating power supply, so that heating of the material itself as resistance heating, with completion to material.It is constituted it is characterized by: at least one electrode is successively conductively connected by following conductive connecting element: heating power supply output electrode, busbar, brush, brush ring, busbar, the high temperature electrode across revolution tube wall, the electrode block that is fixed on hearth wall；Heated current is fed to material by electrode block；And all conductive connecting elements all with return bend and be electrically insulated.Its advantage is that improving Electrical Safety and reducing link cost.
Description
Technical field
The utility model relates to a kind of directly-heated type rotary kilns, belong to electric heating rotary kiln or rotary kiln technical field.
Background technique
Rotary kiln is chemical industry, material, the even important heating of pharmaceuticals industry, drying, calciner, very widely used.
Chinese patent CN103335513A discloses a kind of directly-heated type rotary kiln comprising electrode system, return bend and be in return bend
Internal resistance to material；The inner cavity that resistance to material is constituted is burner hearth (namely space that material can reach in return bend, approximate elongated cylindrical).
Its electrode system include two perhaps two arrays of electrodes one of them perhaps one group be positive another or one group is cathode,
Heating power supply applies either ac or dc power pressure on anode and cathode, passes through the material being heated inside electrode and rotary kiln
(namely material handled by rotary kiln, hereinafter referred to as material) contact, electric current flow through bringing-up section material via anode and arrive cathode again,
So that material itself is as the resistance heating (heating that material passes through the referred to as described directly-heated type rotary kiln of the material section of current heating
Section), to complete the heating (calling directly-heated type rotary kiln in the following text) to material.Material in burner hearth is generally revolved with the rotation of return bend
Turn and/or roll, and since the return bend of most rotary kilns generally has an angle with horizontal plane, material can also revolve
Material during turning in the advance of return bend axial direction namely rotary kiln is threadingly advanced.Rotary kiln burner hearth is along revolution
Pipe axial direction is generally divided into warming-up section (or preheating section), bringing-up section (or high temperature section), temperature descending section (or cooling section), material according to
It is secondary to pass through preheating section, bringing-up section, cooling section then kiln discharge.
The output electrode (anode and cathode) general two on the output side of the heating power supply in the power cabinet of directly-heated type rotary kiln
A all hanging (unearthed), but can also accomplish that only one output electrode is hanging.Directly-heated type rotary kiln, due to needing electricity
Stream is fed to inside the material inside burner hearth, is generally required at least one electrode and is passed through return bend (including the circle from return bend
Cylinder or two circular end faces are passed through), and directly-heated type rotary kiln is generally used for material being heated to upper 1000 DEG C.Such one
Come, the position that electrode passes through return bend is often in the condition of high temperature, and (electrode is all that the good material of electric conductivity makes, and leads
Electrical property is good, and heating conduction is often also good), and it is past between position that return bend is crossed to pass through the electrode of return bend
Contact needs to seal, insulate.Therefore insulation between electrode and return bend, close in directly-heated type rotary kiln manufacture installation process
Envelope and the cooling treatment of electrode are not only at high cost, and structure is more complex, processing and difficulty of construction are also higher.
In conclusion the electrode type of attachment of directly-heated type rotary kiln requires further improvement, to improve its electrical safety,
Reduce electrode link cost and complexity.
Summary of the invention
The purpose of this utility model: it improves the Electrical Safety of directly-heated type rotary kiln, reduce electrode link cost and connection again
Miscellaneous degree improves electrode connection reliability.
Purpose of the utility model is realized as follows: by by the output cathode of material to heating power supply or cathode it
One connection is to return bend and insulation against ground；And the connection of another electrode can insulate to return bend and over the ground or not
Insulation, it is on-insulated, reduce the insulation link cost and complexity of an electrode.
The specific technical solution of the utility model is as follows.
A kind of directly-heated type rotary kiln comprising heating power supply, electrode, return bend, resistance to material；The space that resistance to material surrounds
For burner hearth (i.e. hearth wall is made of resistance to material)；The electrode includes one or one group anode and one or one group of cathode；
The heating power supply applies either ac or dc power pressure between a positive electrode and a negative electrode, passes through bringing-up section inside electrode and rotary kiln
The material contact being heated, electric current flow through bringing-up section material via heating power supply, anode and arrive cathode again and return to heating power supply, make
Material itself is obtained as resistance heating, to complete the heating to material；It is characterized by: anode and cathode among at least one
By following conductive connecting element, successively front and back conductive connection is constituted electrode: heating power supply output electrode, busbar, brush, brush
Ring, busbar, the high temperature electrode across return bend, the electrode block that is fixed on the hearth wall；To form heated current
Current path from heating power supply output electrode to material.
All conductive connecting elements are all electrically insulated to return bend and over the ground；
Be fixed with one group of connection pedestal in the brush ring inner wall, on the outer wall of the return bend corresponding position or
It is fixed with another set connection pedestal on object in the directly-heated type rotary kiln operating with return bend rotation, passes through insulation
Material connects two groups of connection pedestals and is fixed on the brush ring in the revolution pipe outer wall, returns in the directly-heated type
Brush ring described in when rotary kiln operates is rotated with the return bend, and is rotated relative to the brush, brush ring and brush
Between form the conductive path of dynamic contact.The bolt, ceramic insulator, epoxy resin that the insulating materials can be insulating materials are exhausted
Edge, phenolic resin the insulator even insulator of other insulating materials are also possible to various insulating materials such as epoxy resin
Insulated conduit, washer that insulating materials is made into etc..Brush ring inner wall and revolution pipe outer wall on welded bands bolt hole ear mount as
Connect pedestal, either directly revolution pipe outer wall or brush ring inner wall on tapping hole, by these ear mounts, bolt (including
Nut or screw hole) and insulating materials brush ring is fixed on outside return bend and can be rotated with return bend.Certainly also not
Screw connection have to be centainly used, can also be connected with the click on fashion that insulating materials is made into.
Further, described is tightly connected across the high temperature electrode of return bend and return bend.
Further, more than two Electrical contacts conduct electricities of the brush ring at least with two brushes or a brush
Connection, when with to avoid the connection of only one contact conductive, poor contact generates electric spark, and avoids so that electricity of powering in kiln
The raw fluctuation of miscarriage.
Further, the brush ring is made of internal layer steel ring and/or outer layer copper bar ring and/or aluminium row's ring, it is interior
Layer and outer layer by riveting, be bolted or swelling connects that fastened to each other (because of the material that conducts electricity very well, often intensity is not
It is good, so the preferable steel of liner intensity.If only using steel material, need than the material much thick with copper bar).
Further, having spray equipment around the high temperature electrode to the high temperature electrode and its neighbouring component
Carry out spraying cooling, the spray equipment with lower component by being constituted: spray tube, be fixed on revolution pipe outer wall on it is described
High temperature electrode water fender of two sides, the recovery tank below water fender on return bend axial direction；The recovery tank
Any position and any position of the water fender are at a distance of 1cm or more.Spray tube can be fixed on water tank or on ground,
It is not rotated with return bend.Recovery tank can be arc-shaped or rectangular or other shapes, but recovery tank needs to catch two
The arc position of block water fender lower section at least one third circle.And consider the play of return bend, water fender with return bend
Rotation, recovery tank should have a certain distance from water fender.
Further, all conductive connecting elements are all electrically insulated to return bend and over the ground, breakdown voltage
More than or equal to 36 volts.
Further, the high temperature electrode and its all components and described return bend for being conductively connected and its leading
Have an electric insulation layer between all components of electrical connection, water flow around the electric insulation layer connection high temperature electrode and its
The shortest path that all components and the return bend that are conductively connected and its all components of conductive connection flow through is more than or equal to 5
Millimeter.
Compared with prior art, the utility model has the advantages that
Reduce directly-heated type rotary kiln electrode connection complexity, save positive and negative electrode for insulate and seal at
This, improves the safety of electricity consumption.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is 1 directly-heated type rotary kiln schematic diagram of embodiment.
Fig. 2 is 2 directly-heated type rotary kiln schematic diagram of embodiment.
Fig. 3 is 3 directly-heated type rotary kiln schematic diagram of embodiment.
The embodiment of the utility model is further described below with reference to embodiment.
Specific embodiment
Embodiment 1
Fig. 1 is the schematic diagram of embodiment 1, passes through the cross-sectional view of return bend rotary shaft for the directly-heated type rotary kiln.Institute
The directly-heated type rotary kiln stated is for dry or heated material, the inner cavity i.e. furnace surrounded including return bend 1, resistance to material 9, You Naicai 9
Thorax 4.The heated current of heating power supply output electrode successively by be successively conductively connected busbar 37, busbar 38, brush 29,
Brush ring 14, busbar 18, the high temperature electrode 8 across return bend, the electrode block 10 that is fixed on the hearth wall are fed into
Enter the material in burner hearth.
Brush 29 is supported on brush carrier 34 by push plate 35, lifting bolt 30, pull rod 31.30 outer casing spring 33 of hanging ring,
By the position adjustment spring 33 of the nut 36 of 33 bottom of adjustment spring to the thrust of push plate 35, to adjust brush 29 to brush
The pressure size of ring 14 can also make up the abrasion of brush 29 in time.It can certainly be lifting bolt 30, spring 33, nut
36, this set system of pull rod 31 changes pulley and draw cord system into, and one end of drawstring is fixed in push plate 35, is in addition fixed on weight for one section
On object, drawstring bypasses pulley, and the gravity of weight is converted into the thrust of push plate 35.It can also be with lever principle come weight
Weight transfer is used as thrust to push plate 35.It should be particularly noted that, there is one layer of insulation board 32 in brush carrier 34, make brush 29
It is electrically insulated between ground.Can certainly any one section of support brush 29 perhaps brush carrier 34 be made into insulation or handle
Brush carrier 34 is fixed on the basis of insulating materials does, so that being electrically insulated between brush 29 and ground.
On the outer wall of return bend 1 be respectively welded with one group on the inner wall of brush ring 14 and connect pedestal 13, two groups of connection pedestals
The insulation connection of insulated bolt 16 done by insulating materials.So that brush ring 14 is electrically insulated when connecting with return bend 1.Absolutely
Edge bolt 16 is also possible to epoxy resin insulator, and epoxy resin insulator is lower than ceramic insulator price, good toughness, also more holds
It is readily available.
High temperature electrode 8 passes through return bend, is conductively connected busbar 18 and electrode block 10.The outer cuff cooling fin of high temperature electrode 8
Water-cooled jacket 2, have electrical insulating board 3 between the flange of 1 electrode ports of flange and return bend of water-cooled jacket 2, so that water-cooled jacket 2 and revolution
It is electrically insulated between pipe 1.It can be connected and fixed in other manners between certain high temperature electrode 8 and return bend 1, but they it
Between have at least one layer of electrically insulating material that phase same-action is played with electrical insulating board 3.
The circumferential segment spray woods cooling water at spray tube 11-2 to 8 place of high temperature electrode of the spray tube 11 and lower part on top is (cold
But water enters spray tube 11 from water inlet pipe 11-3), to cool down high temperature electrode 8 and its circumferential component.The cooling water flowed down is sprayed to exist
Recovery tank 25 is flowed under the water conservancy diversion of two sides water fender 24 then to flow out from return pipe 25-1.Any position of recovery tank 25 and water fender
The distance at 24 any position is both greater than 1cm, to avoid friction between the two, and gives the play slot milling of return bend 1.
The position 24-1 that water fender 24 is passed through in busbar 18 be electrically insulated with busbar 18 with or without.
Electrode block 10 is fixed on inboard wall of burner hearth, is further secured on the inner wall of return bend 1 by resistance to material 9, using electricity
The resistance to material 9 of insulating materials realizes being electrically insulated between electrode block 10 and return bend 1.
By using above-mentioned each tie point electrical isolation connection after, it is easy to realize include be conductively connected busbar 37,
Busbar 38, brush 29, brush ring 14, busbar 18, across return bend high temperature electrode 8, be fixed on the hearth wall
All conductive connecting elements of electrode block 10 be all electrically insulated between return bend 1, be also electrically insulated between ground.
Busbar 37 is soft copper bar, and busbar 38 is conductively connected busbar 37 and heating power supply output electrode.Busbar 38
It can be copper pipe, copper bar, aluminium row, water power cable etc..
Embodiment 2
Fig. 2 is the schematic diagram of embodiment 2, is that the high temperature electrode 8 of the directly-heated type rotary kiln passes through the return bend 1
The partial sectional view (not showing hiding component) of position.The present embodiment is on the basis of embodiment 1, high temperature to be further illustrated
The type of attachment of electrode 8 and its high temperature on periphery, sealing and insulation.
By packing seal between high temperature electrode 8 and water-cooled jacket 2, briquetting 6 compresses filler 5 and completes sealing.Of course, this is close
Envelope can also use the mechanical or chemical industry commonly modes such as other packing seals, linear sealing even welded seal.
It is connected between water-cooled jacket 2 and flange 7 by welded seal.Connected between return bend 1 and flange 1-1 by welded seal
It connects.There is insulation board 3 between flange 7 and flange 1-1.Bolt 22, insulating washer 19, insulating sleeve 21, nut 23 etc. are by 7 and of flange
Flange 1-1 is compressed, sealing and electrical isolation；And it ensure that water flow is both greater than 5 from flange 7 to the shortest path that flange 1-1 flows through
Millimeter.To reach the requirement of breakdown voltage.
Water-cooled jacket 2 is opening on one side towards spray tube 11 and/or spray tube 11-2's.
Embodiment 3
Fig. 3 is the schematic diagram of embodiment 3, is cross-sectional view of the directly-heated type rotary kiln at brush ring 14.This reality
It applies in example, a brush ring 14 is furnished with 2 brushes 29.One brush 29 is with there are two guide plates 39.Guide plate 39 can be around it
Support rod rotation, prevents brush 14 from circling with brush ring 14.The brush material that general motor etc. uses all uses graphite
It is made.Brush material in the present embodiment is also possible to graphite prepared material.It can certainly be other conductive materials, it might even be possible to
It is molten metal material such as scolding tin etc..
Claims (8)
1. a kind of directly-heated type rotary kiln comprising heating power supply, electrode, return bend, resistance to material；The space that resistance to material surrounds be burner hearth,
I.e. hearth wall is made of resistance to material；The electrode includes one or one group anode and one or one group of cathode；Heating power supply
Apply either ac or dc power pressure between a positive electrode and a negative electrode, is connect by the material that electrode is heated with bringing-up section inside rotary kiln
Touching, electric current flow through bringing-up section material via heating power supply, anode and arrive cathode again and return to heating power supply, spent material itself conduct
Resistance heating, to complete the heating to material；It is characterized by: at least one electrode is by following conduction among anode and cathode
Connecting component is successively conductively connected composition: heating power supply output electrode, busbar, brush, brush ring, busbar, pass through it is described
The high temperature electrode of return bend, the electrode block that is fixed on the hearth wall；
All conductive connecting elements are all electrically insulated between return bend, all conductive connecting elements all with ground it
Between be electrically insulated；
It is fixed with one group of connection pedestal in the brush ring inner wall, on the outer wall of the return bend corresponding position or in institute
Another set connection pedestal is fixed on the object rotated when the directly-heated type rotary kiln operating stated with the return bend, by exhausted
Edge material connects two groups of connection pedestals and fixes the brush ring and the revolution pipe outer wall, returns in the directly-heated type
Brush ring described in when rotary kiln operates is rotated with the return bend, and is rotated relative to the brush.
2. a kind of directly-heated type rotary kiln according to claim 1, it is characterised in that: described to pass through the return bend
It is tightly connected between high temperature electrode and the return bend.
3. a kind of directly-heated type rotary kiln described according to claim 1 ~ any one of 2, it is characterised in that: the brush ring
At least it is connect with more than two Electrical contacts conduct electricities of two brushes or a brush.
4. a kind of directly-heated type rotary kiln described according to claim 1 ~ any one of 2, it is characterised in that: the brush ring
Be made of internal layer steel ring and/or outer layer copper bar ring and/or aluminium row's ring, internal layer and outer layer by riveting, be bolted or swelling
It connects fastened to each other.
5. a kind of directly-heated type rotary kiln described according to claim 1 ~ any one of 2, it is characterised in that: the high-temperature electric
There is spray equipment to carry out spraying cooling to the high temperature electrode and its neighbouring component around pole, the spray equipment is by following
Component is constituted: spray tube is fixed in revolution pipe outer wall in high temperature electrode two sides on return bend axial direction
Water fender, the recovery tank below water fender；Any position of the recovery tank and any position of the water fender
At a distance of 1cm or more.
6. a kind of directly-heated type rotary kiln described according to claim 1 ~ any one of 2, it is characterised in that: described all to lead
Electric connecting part is all electrically insulated between return bend and ground, and breakdown voltage is more than or equal to 36 volts.
7. a kind of directly-heated type rotary kiln described according to claim 1 ~ any one of 2, it is characterised in that: the high-temperature electric
It is electrically insulated between pole and its all component being conductively connected and the return bend and its all component being conductively connected
Layer, water flow bypass the electric insulation layer connection high temperature electrode and its all component being conductively connected and time
The shortest path that tube and its all component being conductively connected flow through is more than or equal to 5 millimeters.
8. a kind of directly-heated type rotary kiln described according to claim 1 ~ any one of 2, it is characterised in that: the brush with
At least one section of the busbar between the heating power supply output electrode is soft busbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821406436.0U CN208846934U (en) | 2018-08-30 | 2018-08-30 | A kind of directly-heated type rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821406436.0U CN208846934U (en) | 2018-08-30 | 2018-08-30 | A kind of directly-heated type rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208846934U true CN208846934U (en) | 2019-05-10 |
Family
ID=66357742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821406436.0U Active CN208846934U (en) | 2018-08-30 | 2018-08-30 | A kind of directly-heated type rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208846934U (en) |
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2018
- 2018-08-30 CN CN201821406436.0U patent/CN208846934U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240509 Address after: No. 104, 1st Floor, Building 2, No. 1999 Tianfu Fourth Street, Chengdu High tech Zone, Chengdu Free Trade Zone, Sichuan Province, 610000 Patentee after: China Hydrogen Metallurgical Control (Chengdu) Technology Co.,Ltd. Country or region after: China Address before: 610041 Chengdu Institute of organic chemistry, Chinese Academy of Sciences, No. two, 16 south section of the first ring road, Chengdu, Sichuan Patentee before: Feng Liangrong Country or region before: China |