CN218955444U - Internal heating type continuous rotary heating device - Google Patents
Internal heating type continuous rotary heating device Download PDFInfo
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- CN218955444U CN218955444U CN202220962697.0U CN202220962697U CN218955444U CN 218955444 U CN218955444 U CN 218955444U CN 202220962697 U CN202220962697 U CN 202220962697U CN 218955444 U CN218955444 U CN 218955444U
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Abstract
The utility model relates to an internal heating type continuous rotary heating device which comprises a self-heating graphite tube rotary cylinder and a power receiving electrode rod, wherein the inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube, and two ends of the graphite tube are connected with an electric slip ring and are electrified and heated through the power receiving electrode rod. Compared with the prior art, the utility model provides an internal heating type continuous rotary heating device, the internal cylinder body of the self-heating rotary kiln is made of graphite, two ends of the graphite cylinder are powered by a slip ring, the graphite pipe heats by self resistance, and the heating electric power is regulated according to the set furnace temperature. The furnace temperature of the utility model can be high and low, and can realize continuous adjustment from hundreds to thousands (more than 2000 ℃), the heated material can be powder or granular material, and protective gas is introduced into the furnace to form micro positive pressure or micro negative pressure, thus the utility model can isolate air, is particularly suitable for coating carbon materials, low-temperature carbonization and high-temperature carbonization, and can also realize the heating treatment of other materials.
Description
Technical Field
The utility model relates to industrial furnace equipment, in particular to an internal heating type continuous rotary heating device.
Background
At present, two heating modes of the conventional rotary kiln exist: 1) Indirect heating-external heating; 2) Direct heating-inner lining built by refractory material, flame heating.
1) Indirect heating-external heating type is to heat the outside of the rotary cylinder, and transfer heat to the materials in the cylinder through the pipe wall, and the cylinder body with large yield can only be made of heat-resistant steel materials due to the following limitation reasons: firstly, the heating temperature of the shell body is greatly limited to be more than 1200 ℃ and the process of high-temperature heat removal is not realized; particularly, when the carbon material is heated to more than 1000 ℃, the carburization of the heat-resistant steel cylinder is serious, the service life is greatly shortened, in addition, the carbon material of the negative electrode of the battery strictly forbids ferrite pollution, and the heat-resistant steel cylinder can cause ferrite pollution, which is also a heating mode needing forbidding;
2) Direct heating-flame heating, materials that require heating, materials that can be oxidized in a flame or can be burned, especially materials with higher added value, do not have a way to heat in such rotary kilns, such as carbon material coating and graphite coated carbonization or high temperature treatment of near-net-type negative electrode materials.
The patent document with application number 201410773125.8 discloses an electric heating continuous internal heating type high-temperature rotary kiln which is self-heating through a graphite tube and can be continuously used at 300-2000 ℃. But the graphite tube is powered and heated in such a way that an induction heating coil is wound outside graphite, and the induction heating coil generates heat loss due to eddy currents, so that the generated heat is taken away by a cooling medium, otherwise, the induction coil is burnt out, and the electric energy utilization rate is reduced.
Disclosure of Invention
The utility model aims to provide an internal heating type continuous rotary heating device, the furnace temperature of the self-heating type rotary device can be high and low, continuous adjustment can be realized from hundreds to thousands of degrees (more than 2000 ℃), the heated material can be powder or granular material, protective gas is introduced into the furnace to form micro positive pressure or micro negative pressure, and the self-heating type rotary device is particularly suitable for coating carbon materials, low-temperature carbonization and high-temperature carbonization and can also realize heating treatment of other materials due to the fact that air can be isolated.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the utility model provides an interior hot type continuous rotary heating device, includes from the graphite tube rotary drum of generating heat, receives the electric pole stick, the inner tube of from the graphite tube rotary drum of generating heat is the graphite tube, the electrical slip ring is connected at the both ends of graphite tube to through receiving the electric pole stick circular telegram heating.
Still include material loading stiff end, ejection of compact stiff end, self-adaptation multilayer sealing device, sealed aligning device, the both ends of self-heating graphite pipe rotary drum are connected material loading stiff end and ejection of compact stiff end respectively, are provided with self-adaptation multilayer sealing device in the junction of self-heating graphite pipe rotary drum and material loading stiff end and ejection of compact stiff end, self-adaptation multilayer sealing device adjusts the concentricity with self-heating graphite pipe rotary drum through sealed aligning device.
The discharging fixed end comprises a steel structure shell, a fire-resistant heat-insulating material layer, a gate valve, a rotary discharger and a discharging expander, wherein the steel structure shell is wrapped outside the fire-resistant heat-insulating material layer, a discharging cavity is formed in the fire-resistant heat-insulating material layer, the discharging end of the self-heating graphite tube rotary drum is inserted into the discharging cavity, the power receiving electrode rod penetrates into the discharging cavity to be in contact with an electric slip ring on a graphite tube, and the gate valve, the rotary discharger and the discharging expander are sequentially arranged at the bottom of the discharging cavity.
The feeding stiff end includes steel construction casing, fire-resistant thermal insulation material layer, spiral charging means, unloading pipe, push-pull valve, steel construction casing parcel is in the outside on fire-resistant thermal insulation material layer, the inside feeding chamber that is of fire-resistant thermal insulation material layer, in the feeding chamber was inserted to the feed end of self-heating graphite pipe revolving drum, the feed end of self-heating graphite pipe revolving drum is connected to the spiral charging means, the electricity receiving electrode stick penetrates the feed chamber and contacts with the electrical slip ring on the graphite pipe, the feed chamber bottom is provided with the unloading pipe, installs the push-pull valve on the unloading pipe.
The self-adaptive multi-layer sealing device comprises a flexible sealing ring, a graphite sealing ring, an outer fixing tube and an inner sealing tube, wherein the inner sealing tube is connected with a self-heating graphite tube rotary drum through a sealing aligning device, a multi-layer flexible sealing ring is axially arranged between the inner sealing tube and the outer fixing tube, the graphite sealing ring is arranged at the innermost side of the multi-layer flexible sealing ring, and the outer fixing tube is connected with a feeding fixing end or a discharging fixing end.
The bottom of material loading stiff end and ejection of compact stiff end is installed gyro wheel and track, material loading stiff end and ejection of compact stiff end are connected the weight through wire rope respectively.
The sealing aligning device comprises a distance adjusting screw rod and a ripple expander, the self-heating graphite tube rotary cylinder is connected with the self-adapting multi-layer sealing device through the distance adjusting screw rod, and the ripple expander for sealing is further arranged between the self-heating graphite tube rotary cylinder and the self-adapting multi-layer sealing device.
The automatic compensator applies pressure to the power receiving electrode rod, so that constant contact between the power receiving electrode rod and the electric slip ring can be kept.
The automatic compensator comprises a spring, a guide rod, an upper support and a lower support, wherein the guide rod is fixed on a feeding fixed end or a discharging fixed end, the spring is sleeved on the guide rod, the upper support and the lower support are arranged at two ends of the spring, the upper support is fixedly connected with the guide rod, the lower support is slidably connected with the guide rod, and the lower support is fixedly connected with an electric electrode rod.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides an internal heating type continuous rotary heating device, wherein a graphite material is adopted as an inner cylinder body of the self-heating rotary kiln, slip rings are adopted at two ends of the graphite cylinder to receive electricity, a graphite tube generates heat by self resistance, heating electric power is regulated according to a set furnace temperature, a fireproof insulating heat insulation material is arranged at the outer side of the graphite tube, a transmission sealing steel shell is arranged at the outer side of the heat insulation material, a charging end and a discharging end are arranged at two ends of the rotary cylinder, the whole furnace is sealed, the furnace temperature can be high or low, continuous regulation can be realized from hundreds of degrees to thousands of degrees (more than 2000 ℃), the heated material can be powder or granular material, protective gas is introduced into the furnace to form micro-positive pressure or micro-negative pressure, and the device can isolate air and is particularly suitable for cladding of carbon materials, low-temperature carbonization and high-temperature carbonization, and heating treatment of other materials can be realized.
If the induction coil is used for heating, heat is generated due to eddy current loss, and the generated heat is dissipated, otherwise, the induction coil is burnt out, so that the whole induction coil is required to be cooled, and the electric energy utilization rate is reduced. The utility model adopts the power receiving electrode bar to directly supply power without eddy current loss, only the heat generated by the direct resistance of the power receiving electrode bar and the heat of local heat transfer of the graphite cylinder need to be cooled, and the heat loss is greatly reduced.
Drawings
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is an enlarged view of a portion of the discharge end of the present utility model;
FIG. 3 is an enlarged view of a portion of the feed end of the present utility model;
fig. 4 is a schematic structural view of the adaptive multi-layer sealing device of the present utility model.
In the figure: the device comprises a 1-powered electrode rod, a 2-automatic compensator, a 3-self-adaptive multi-layer sealing device, a 4-graphite pipe, a 5-rotary kiln supporting roller, a 6-rotary kiln transmission, a 7-explosion-proof valve, an 8-intermediate charging tank, a 9-spiral feeder, a 10-gate valve, an 11-rotary discharger, a 12-discharge corrugated expander, a 13-electric slip ring, a 14-steel structure shell, a 15-refractory heat insulation material layer, a 16-observation temperature measuring hole, a 17-water cooling pipe, a 18-graphite sealing ring, a 19-flexible sealing ring, a 20-cooling air nozzle, a 21-inner sealing pipe, a 22-distance adjusting screw, a 23-corrugated expander, a 24-exhaust port, a 25-bin discharge valve, a 26-corrugated compensator, a 27-blanking pipe, a 28-power supply bus, a 29-fixed wheel, a 30-steel wire rope, a 31-guide wheel, a 32-heavy hammer, a 33-guide wheel upright post, a 34-track, a 35-roller and a 36-supporting side frame.
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
referring to fig. 1-4, an internal heating type continuous rotary heating device comprises a self-heating graphite tube rotary cylinder and a power receiving electrode rod 1, wherein the inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube 4, and two ends of the graphite tube 4 are connected with an electric slip ring 13 and are electrified and heated through the power receiving electrode rod 1.
Still include material loading stiff end, ejection of compact stiff end, self-adaptation multilayer sealing device 3, sealed aligning device, the both ends of self-heating graphite tube rotary drum are connected material loading stiff end and ejection of compact stiff end respectively, are provided with self-adaptation multilayer sealing device 3 in the junction of self-heating graphite tube rotary drum and material loading stiff end and ejection of compact stiff end, self-adaptation multilayer sealing device 3 adjusts the concentricity with self-heating graphite tube rotary drum through sealed aligning device.
See fig. 2, the ejection of compact stiff end includes steel construction casing 14, fire-resistant thermal insulation material layer 15, push-pull valve 10, gyration tripper 11, the ripple expander 12 of unloading, steel construction casing 14 parcel is in the outside of fire-resistant thermal insulation material layer 15, fire-resistant thermal insulation material layer 15 is inside to be the ejection of compact chamber, insert in the ejection of compact chamber from the ejection of compact end of heating graphite pipe revolving drum, receive electric pole 1 to penetrate ejection of compact chamber and graphite pipe 4 on electric slip ring 13 contact, ejection of compact chamber bottom sets gradually push-pull valve 10, gyration tripper 11 and the ripple expander 12 of unloading. The discharge fixed end is also provided with an explosion-proof valve 7 and an observation temperature measuring hole 16.
See fig. 3, the material loading stiff end includes steel construction casing 14, fire-resistant thermal insulation material layer, screw feeder 9, unloading pipe 27, push-pull valve 10, steel construction casing 14 parcel is in the outside on fire-resistant thermal insulation material layer, the inside feed chamber that is of fire-resistant thermal insulation material layer, the feed end of self-heating graphite pipe revolving drum inserts in the feed chamber, screw feeder 9 connects the feed end of self-heating graphite pipe revolving drum, the electric slip ring 13 contact on the power receiving electrode stick 1 penetrates the feed chamber and the graphite pipe 4, the feed chamber bottom is provided with unloading pipe 27, installs push-pull valve 10 on the unloading pipe 27. And an air outlet 24 is also arranged on the feeding fixing end. The screw feeder 9 stretches into the feeding cavity from the side of material loading stiff end and is connected with graphite tube 4, and screw feeder 9 is provided with the ripple compensator between the outside part of material loading stiff end and the material loading stiff end for the material loading is sealed. The feed inlet of screw feeder 9 connects middle charge jar 8, and the discharge gate of middle charge jar 8 bottom is equipped with push-pull valve 10, feed bin discharge valve 25, ripple compensator 26.
See fig. 2, 3 and 4, the self-adaptive multi-layer sealing device 3 comprises a flexible sealing ring 19, a graphite sealing ring 18, an outer fixed pipe and an inner sealing pipe 21, the inner sealing pipe 21 is connected with a self-heating graphite pipe rotary drum through a sealing aligning device, a multi-layer flexible sealing ring 19 is axially arranged between the inner sealing pipe 21 and the outer fixed pipe, the graphite sealing ring 18 is arranged at the innermost side of the multi-layer flexible sealing ring 19, and the outer fixed pipe is connected with a feeding fixed end or a discharging fixed end through bolts.
The roller 35 and the track 34 are installed to the bottom of material loading stiff end and ejection of compact stiff end, material loading stiff end and ejection of compact stiff end are connected weight 32 through wire rope 30 respectively. Fixed wheel 29 is fixed on the steel structure shell of material loading stiff end and ejection of compact stiff end, and wire rope's one end fixed connection fixed wheel 29, the other end is walked around leading wheel 31 and is connected weight 32.
The outer side of the flexible sealing ring 19 is connected with an outer fixed pipe, and contact sealing is formed between the flexible sealing ring 19 and the inner sealing pipe 21. The outside of graphite sealing washer 18 is connected the outer fixed pipe, and the inside is connected the inner seal pipe 21, and the centre is the axial contact sealed face, because long-time work wearing and tearing can produce the clearance in the axial contact sealed face department of graphite sealing washer 18, can make material loading stiff end or ejection of compact stiff end drive the outer fixed pipe and produce the displacement through weight 32, carries out automatic fine motion compensation to the clearance of axial contact sealed face.
When the friction sealing surface of the graphite sealing ring 18 is worn to generate a gap, the self-adaptive multi-layer sealing device 3 can enable the feeding fixed end and the discharging fixed end to automatically and slightly compensate the worn gap by running on a track through the roller under the action of the heavy hammer. The constant pressure is applied to the friction sealing surface by adjusting the weight of the weight to keep the sealing surface to be always zero clearance, so that the requirement of automatic self-adaptive sealing is met.
The sealing aligning device comprises a distance adjusting screw rod 22 and a ripple expander 23, the self-heating graphite tube rotary cylinder is connected with the self-adapting multi-layer sealing device 3 through the distance adjusting screw rod 22, and the ripple expander 23 used for sealing is further arranged between the self-heating graphite tube rotary cylinder and the self-adapting multi-layer sealing device 3.
The middle of the distance adjusting screw rod 22 is provided with a nut, the two ends of the distance adjusting screw rod are screw rods with positive and negative threads, the length of the distance adjusting screw rod 22 is adjusted by screwing the nut, so that the radial distance between the self-adaptive multi-layer sealing device 3 and the self-heating graphite tube rotary drum is adjusted, the concentricity of the sealing surface cylinder body and the rotary kiln is achieved in the circumferential direction through the adjustment of the screw rods, and the corrugated expander 23 plays a sealing role in the interior and the exterior of the kiln and can provide position compensation during debugging.
The manual sealing surface alignment is carried out after the self-heating graphite tube rotary cylinder body is installed in place, namely concentricity of the multi-layer sealing device and the self-heating graphite tube rotary cylinder is adjusted, the plurality of distance adjusting screw rods 22 play a role in adjusting concentricity and supporting the multi-layer sealing device, the purpose of aligning during construction adjustment is achieved, and after adjustment is finished, the outer fixing tube is fixedly connected with the feeding fixing end or the discharging fixing end through bolts.
By applying pressure to the power receiving electrode rod 1 by the automatic compensator 2, constant contact between the power receiving electrode rod 1 and the electric slip ring 13 can be maintained. The power receiving electrode bar 1 is provided with a water cooling device.
The automatic compensator 2 comprises a spring, a guide rod, an upper support and a lower support, wherein the guide rod is fixed on a feeding fixed end or a discharging fixed end, the spring is sleeved on the guide rod, the upper support and the lower support are arranged at two ends of the spring, the upper support is fixedly connected with the guide rod, the lower support is slidably connected with the guide rod, and the lower support is fixedly connected with the electric electrode rod 1. The power receiving electrode rod 1 extends into the discharging cavity or the feeding cavity, and a ripple compensator is arranged between the power receiving electrode rod 1 and the steel structure shell 14 and is used for sliding sealing between the discharging cavity or the feeding cavity of the power receiving electrode rod 1.
The power receiving electrode rod 1 and the graphite tube 4 are powered through the electric slip ring 13, and as the graphite tube 4 has bouncing or non-concentricity in the rotation process, gaps are generated between the electric slip ring 13 and the graphite tube 4, the resistance is increased, an arc is generated, the electric slip ring 13 and the graphite tube 4 are ablated, the resistance is further increased, and a plurality of bad results are caused: the resistance increases, the electric power supply does not have heating capacity, and the service lives of the electric slip ring 13 and the graphite tube 4 are shortened. According to the utility model, a spring balance device is adopted for the power receiving electrode rod 1, a constant pressure is applied between the electric slip ring 13 and the graphite tube 4, no matter the drum bounces or is eccentric, the electric slip ring 13 and the graphite tube 4 are in close contact, and the contact resistance is minimum.
The self-heating graphite tube rotary cylinder comprises a graphite tube 4, a fireproof insulating heat-insulating material layer wrapped on the outer side of the graphite tube 4 and a steel shell fixed on the outer portion of the fireproof insulating heat-insulating material layer.
The self-heating type rotary heating device is particularly suitable for heating treatment of carbon (graphite) materials, has no pollution or oxidation, and can realize high-temperature heating. The rotary kiln is arranged on an integral steel platform to form a certain inclined angle, the angle of the platform is adjustable, the adjusting angle is adjusted from 0 degree to 5 degrees according to the condition of materials, variable frequency speed regulation is adopted in transmission, and the speed of the rotary kiln for conveying the materials can be adjusted by changing the inclined angle and the speed regulation.
Claims (10)
1. The internal heating type continuous rotary heating device is characterized by comprising a self-heating graphite tube rotary cylinder and a power receiving electrode rod, wherein the inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube, and two ends of the graphite tube are connected with an electric slip ring and are electrified and heated through the power receiving electrode rod.
2. The internal heating type continuous rotary heating device according to claim 1, further comprising a feeding fixed end, a discharging fixed end, a self-adaptive multilayer sealing device and a sealing aligning device, wherein the two ends of the self-heating graphite tube rotary cylinder are respectively connected with the feeding fixed end and the discharging fixed end, the self-adaptive multilayer sealing device is arranged at the joint of the self-heating graphite tube rotary cylinder and the feeding fixed end and the discharging fixed end, and the self-adaptive multilayer sealing device adjusts the concentricity of the self-heating graphite tube rotary cylinder through the sealing aligning device.
3. The internal heating type continuous rotary heating device according to claim 2, wherein the discharge fixed end comprises a steel structure shell, a fire-resistant heat-insulating material layer, a gate valve, a rotary discharger and a discharge expander, the steel structure shell is wrapped outside the fire-resistant heat-insulating material layer, a discharge cavity is formed in the fire-resistant heat-insulating material layer, the discharge end of the self-heating graphite tube rotary cylinder is inserted into the discharge cavity, the power-receiving electrode rod penetrates into the discharge cavity to be in contact with an electric slip ring on a graphite tube, and the gate valve, the rotary discharger and the discharge expander are sequentially arranged at the bottom of the discharge cavity.
4. The internal heating type continuous rotary heating device according to claim 2, wherein the feeding fixed end comprises a steel structure shell, a refractory and heat-insulating material layer, a screw feeder, a discharging pipe and a gate valve, the steel structure shell is wrapped outside the refractory and heat-insulating material layer, a feeding cavity is formed in the refractory and heat-insulating material layer, the feeding end of the self-heating graphite pipe rotary cylinder is inserted into the feeding cavity, the screw feeder is connected with the feeding end of the self-heating graphite pipe rotary cylinder, the power receiving electrode rod penetrates into the feeding cavity to be in contact with an electric slip ring on a graphite pipe, the discharging pipe is arranged at the bottom of the feeding cavity, and the gate valve is arranged on the discharging pipe.
5. The internal heating type continuous rotary heating device according to claim 4, wherein the self-adaptive multi-layer sealing device comprises a flexible sealing ring, a graphite sealing ring, an outer fixing tube and an inner sealing tube, the inner sealing tube is connected with a self-heating graphite tube rotary drum through a sealing aligning device, a multi-layer flexible sealing ring is axially arranged between the inner sealing tube and the outer fixing tube, the graphite sealing ring is arranged at the innermost side of the multi-layer flexible sealing ring, and the outer fixing tube is connected with a feeding fixing end or a discharging fixing end.
6. The internal heating type continuous rotary heating device according to claim 5, wherein rollers and rails are installed at bottoms of the feeding fixed end and the discharging fixed end, and the feeding fixed end and the discharging fixed end are connected with heavy weights through steel wire ropes respectively.
7. The internal heating type continuous rotary heating device according to claim 2, wherein the sealing aligning device comprises a distance adjusting screw rod and a ripple expander, the self-heating graphite tube rotary cylinder is connected with the self-adapting multi-layer sealing device through the distance adjusting screw rod, and the ripple expander for sealing is further arranged between the self-heating graphite tube rotary cylinder and the self-adapting multi-layer sealing device.
8. An internal heating continuous rotary heating apparatus according to claim 1, wherein constant contact between the powered electrode bar and the electrical slip ring is maintained by applying pressure to the powered electrode bar by an automatic compensator.
9. The internal heating type continuous rotary heating device according to claim 8, wherein the automatic compensator comprises a spring, a guide rod, an upper support and a lower support, the guide rod is fixed on the feeding fixed end or the discharging fixed end, the spring is sleeved on the guide rod, the upper support and the lower support are arranged at two ends of the spring, the upper support is fixedly connected with the guide rod, the lower support is slidably connected with the guide rod, and the lower support is fixedly connected with the electric receiving electrode rod.
10. The internal heating type continuous rotary heating device according to claim 1, wherein the self-heating graphite tube rotary cylinder comprises a graphite tube, a fire-resistant insulating material layer wrapped outside the graphite tube, and a steel shell fixed outside the fire-resistant insulating material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220962697.0U CN218955444U (en) | 2022-04-22 | 2022-04-22 | Internal heating type continuous rotary heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220962697.0U CN218955444U (en) | 2022-04-22 | 2022-04-22 | Internal heating type continuous rotary heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218955444U true CN218955444U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220962697.0U Active CN218955444U (en) | 2022-04-22 | 2022-04-22 | Internal heating type continuous rotary heating device |
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| Country | Link |
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| CN (1) | CN218955444U (en) |
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2022
- 2022-04-22 CN CN202220962697.0U patent/CN218955444U/en active Active
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