CN219083706U - Rotary kiln self-adaptive power receiving device - Google Patents
Rotary kiln self-adaptive power receiving device Download PDFInfo
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- CN219083706U CN219083706U CN202220950691.1U CN202220950691U CN219083706U CN 219083706 U CN219083706 U CN 219083706U CN 202220950691 U CN202220950691 U CN 202220950691U CN 219083706 U CN219083706 U CN 219083706U
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Abstract
The utility model relates to a self-adaptive power receiving device of a rotary kiln, which comprises a self-heating graphite tube rotary cylinder, a power receiving electrode rod and an automatic compensator, wherein the inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube, two ends of the graphite tube are connected with an electric slip ring and are electrified and heated through the power receiving electrode rod, and the automatic compensator applies pressure to the power receiving electrode rod to keep constant contact between the power receiving electrode rod and the electric slip ring. Compared with the prior art, the utility model has the beneficial effects that: 1) The heating temperature of the utility model can be high and low, and can be continuously adjusted from hundreds to thousands (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 utility model is especially 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 a rotary kiln self-adaptive power receiving 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 secondary coating of graphitic carbon materials or high temperature treatment of near-net 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 a self-adaptive power receiving device of a rotary kiln, which has the advantages that the heating temperature can be high and low, continuous adjustment 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 self-adaptive power receiving device is particularly suitable for coating carbon materials, carbonizing at low temperature and carbonizing at high temperature and can also realize heating treatment of other materials.
In order to achieve the above purpose, the utility model is realized by adopting the following technical scheme:
the self-adaptive power receiving device of the rotary kiln comprises a self-heating graphite tube rotary cylinder, a power receiving electrode rod and an automatic compensator, wherein an inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube, two ends of the graphite tube are connected with an electric slip ring, the self-heating graphite tube is electrified and heated through the power receiving electrode rod, and the automatic compensator applies pressure to the power receiving electrode rod to keep constant contact between the power receiving electrode rod and the electric slip ring.
The automatic compensator comprises a spring, a guide rod, an upper support and a lower support, wherein the guide rod is fixed outside the rotary kiln, 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, the lower support is fixedly connected with an electric electrode rod, and the electric electrode rod stretches into the rotary kiln to contact with a graphite tube through an electric slip ring.
The self-heating graphite tube rotary cylinder comprises a graphite tube, a fireproof insulating heat-insulating material layer wrapped on the outer side of the graphite tube and a steel shell fixed on the outer portion of the fireproof insulating heat-insulating material layer.
Compared with the prior art, the utility model has the beneficial effects that:
1) The heating temperature of the utility model can be high and low, and can be continuously adjusted from hundreds to thousands (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 utility model is especially suitable for coating carbon materials, low-temperature carbonization and high-temperature carbonization, and can also realize the heating treatment of other materials.
2) The utility model adopts the power receiving electrode bar to directly supply power, thereby avoiding eddy current loss, and 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.
3) The automatic compensator applies a constant pressure between the electric slip ring and the graphite tube by adopting a spring balance device to the power receiving electrode rod, and the electric slip ring and the graphite tube are in close contact no matter the rotary drum bounces or is eccentric, so that the contact resistance is minimized.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1-powered electrode bar, 2-spring, 3-power supply bus, 4-ripple compensator, 5-upper bracket, 6-lower bracket, 7-guide rod, 8-steel shell, 9-fire-resistant insulating material layer, 10-graphite tube and 11-electric slip ring.
Detailed Description
The following is a further description of embodiments of the utility model, taken in conjunction with the accompanying drawings:
see fig. 1, a rotary kiln self-adaptive power receiving device comprises a self-heating graphite tube rotary cylinder, a power receiving electrode rod 1 and an automatic compensator, wherein the inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube 10, two ends of the graphite tube 10 are connected with an electric slip ring 11 and are electrified and heated through the power receiving electrode rod 1, the automatic compensator applies pressure to the power receiving electrode rod 1, and constant contact between the power receiving electrode rod 1 and the electric slip ring 11 is kept.
The automatic compensator comprises a spring 2, a guide rod 7, an upper support 5 and a lower support 6, wherein the guide rod 7 is fixed outside the rotary kiln, the spring 2 is sleeved on the guide rod 7, the upper support 5 and the lower support 6 are arranged at two ends of the spring 2, the upper support 5 is fixedly connected with the guide rod 7, the lower support 6 is slidably connected with the guide rod 7, the lower support 6 is fixedly connected with an electric electrode rod 1, and the electric electrode rod 1 stretches into the rotary kiln to be contacted with a graphite tube 10 through an electric slip ring 11.
The self-heating graphite tube rotary cylinder comprises a graphite tube 10, a fireproof insulating heat-insulating material layer 9 wrapping the outer side of the graphite tube 10, and a steel shell 8 fixed outside the fireproof insulating heat-insulating material layer 9.
By applying pressure to the power receiving electrode rod 1 by the automatic compensator, constant contact between the power receiving electrode rod 1 and the electrical slip ring 11 can be maintained. The power receiving electrode bar 1 is provided with a water cooling device.
The power receiving electrode rod 1 and the graphite tube 10 are powered through the electric slip ring 11, and as the graphite tube 10 has bouncing or non-concentricity in the rotation process, gaps are generated between the electric slip ring 11 and the graphite tube 10, electric arcs are generated when the resistance is increased, the electric slip ring 11 and the graphite tube 10 are ablated, and the resistance is further increased to cause a plurality of bad results: the resistance increases, the electric power supply does not have heating capacity, and the service lives of the electric slip ring 11 and the graphite tube 10 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 11 and the graphite tube 10, no matter the drum bounces or is eccentric, the electric slip ring 11 and the graphite tube 10 are in close contact, and the contact resistance is minimum.
The utility model is especially suitable for the heating treatment of carbon (graphite) materials, has no pollution and 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 (3)
1. The self-adaptive power receiving device of the rotary kiln is characterized by comprising a self-heating graphite tube rotary cylinder, a power receiving electrode rod and an automatic compensator, wherein the inner cylinder of the self-heating graphite tube rotary cylinder is a graphite tube, two ends of the graphite tube are connected with an electric slip ring and are electrified and heated through the power receiving electrode rod, and the automatic compensator applies pressure to the power receiving electrode rod to keep constant contact between the power receiving electrode rod and the electric slip ring.
2. The rotary kiln self-adaptive power receiving device according to claim 1, wherein the automatic compensator comprises a spring, a guide rod, an upper support and a lower support, the guide rod is fixed outside the rotary kiln, 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, the lower support is fixedly connected with a power receiving electrode rod, and the power receiving electrode rod extends into the rotary kiln to be contacted with a graphite tube through an electric slip ring.
3. The rotary kiln self-adaptive power receiving device according to claim 1, wherein the self-heating graphite tube rotary cylinder comprises a graphite tube, a fireproof insulating material layer wrapping the outer side of the graphite tube, and a steel shell fixed outside the fireproof insulating material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220950691.1U CN219083706U (en) | 2022-04-22 | 2022-04-22 | Rotary kiln self-adaptive power receiving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220950691.1U CN219083706U (en) | 2022-04-22 | 2022-04-22 | Rotary kiln self-adaptive power receiving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219083706U true CN219083706U (en) | 2023-05-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220950691.1U Active CN219083706U (en) | 2022-04-22 | 2022-04-22 | Rotary kiln self-adaptive power receiving device |
Country Status (1)
| Country | Link |
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| CN (1) | CN219083706U (en) |
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2022
- 2022-04-22 CN CN202220950691.1U patent/CN219083706U/en active Active
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