CN211739831U - Rotary kiln rotary drum and rotary kiln - Google Patents

Abstract

The utility model discloses a rotary kiln rotary drum, including barrel, raise dust board unit, guide ring, preceding spiral baffle and back spiral baffle, be equipped with the inner chamber in the barrel, preceding spiral baffle and back spiral baffle set up respectively in the front end and the rear end of inner chamber, on the direction of travel of material in the inner chamber, guide ring and raise dust board unit set up in the inner chamber in turn, just guide ring and raise dust board unit all are located between spiral baffle and the back spiral baffle before. The dust board unit includes at least one row of dust board, and every row of dust board contains 2 at least dust boards, and each dust board in every row of dust board is for the axis circumference evenly distributed of barrel. And simultaneously, the utility model also discloses a rotary kiln of adopting above-mentioned rotary kiln rotary drum. The utility model discloses can prolong the time of material in the barrel to the extension material is heated or refrigerated time, and can prevent still that the material from taking place to pile up.

Description

Rotary kiln rotary drum and rotary kiln

Technical Field

The utility model relates to a rotary kiln technique, concretely relates to rotary kiln rotary drum and rotary kiln.

Background

At present, equipment such as a roller kiln, a tunnel kiln, a pusher kiln, a brick kiln and the like is widely applied to the ceramic, cement and metallurgical industries and is also widely applied to the field of lithium ion battery anode materials. The method is mainly used for drying the precursor and oxidizing the precursor in the production process of the anode precursor material, and is mainly used for drying the anode material after being washed by water and burning the anode material twice.

In the field of power batteries, ternary materials have become hot spots, particularly, ternary materials with high nickel content have the characteristics of low cost, high specific capacity, excellent safety performance and the like, and have become important in the development of lithium battery materials, but the process difficulty is high, the equipment is complex, and the processing cost is increased. After national refund, the price of the lithium ion battery material is further increased, and the power battery anode material needs to be further optimized in the aspect of equipment and technology so as to reduce the cost and improve the quality.

Most of the high-nickel anode materials in the prior companies adopt an atmosphere roller kiln to carry out secondary sintering or tertiary sintering, and a large amount of electric energy, saggars, oxygen and other loss products are needed. In the daily production process, a large number of kiln accessories such as rods, heating rods, thermocouples and the like need to be replaced in the roller kiln, and the sintering cost is extremely high. A small number of companies introduce sintering equipment in the metallurgy and cement industries to perform material sintering in a rotary kiln. When the rotary kiln is used in the lithium battery anode material industry, the defects of uncontrollable sintering time, nonuniform sintered materials, insufficient material cooling and the like exist, so that the anode product is insufficiently sintered and the performance is deteriorated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the defects existing in the prior art and providing a rotary kiln rotary drum. The rotary kiln drum can be sintered uniformly, the sintering time is controllable, the cooling time is long during cooling, and the cooling effect is good.

Meanwhile, the utility model also aims at providing a rotary kiln.

The purpose of the utility model is realized through the following technical scheme: the rotary kiln drum comprises a drum body, a dust raising plate unit, a guide ring, a front spiral baffle and a rear spiral baffle, wherein an inner cavity is arranged in the drum body, the front spiral baffle and the rear spiral baffle are respectively arranged at the front end and the rear end of the inner cavity, the guide ring and the dust raising plate unit are alternately arranged in the inner cavity in the advancing direction of materials in the inner cavity, the guide ring and the dust raising plate unit are both positioned between the front spiral baffle and the rear spiral baffle, and the spiral direction of the front spiral baffle is opposite to the spiral direction of the rear spiral baffle.

Preferably, the dust board unit comprises at least one row of dust boards, each row of dust boards comprises at least 2 dust boards, and the dust boards in each row of dust boards are uniformly distributed relative to the circumference of the axis of the cylinder.

Preferably, one end of each dust raising plate is fixed on the inner wall of the cylinder, and the included angle between each dust raising plate and the radial direction of the cylinder is 30-60 degrees.

Preferably, the material guide ring is an open material guide ring, the open material guide ring is spirally arranged, and the spiral direction of the open material guide ring is consistent with the spiral direction of the front spiral baffle.

Preferably, the number of the dust raising plate units is the same as that of the guide rings.

Preferably, each dust raising plate unit comprises 2-4 rows of dust raising plates.

Preferably, each row of dust raising plates comprises 2-6 dust raising plates.

Preferably, the pitch of the front spiral baffle is 50-150 mm, and the pitch of the rear spiral baffle is 50-150 mm.

The utility model provides a rotary kiln, includes first support frame, second support frame, heating end feed arrangement, heating end unloader, cooling end unloader and two foretell rotary kiln rotary drums, and one of them rotary kiln rotary drum is the heating end rotary drum, and another rotary kiln rotary drum is the cooling end rotary drum, the heating end rotary drum is installed in first support frame, the cooling end rotary drum is installed in the second support frame, heating end feed arrangement is connected with the pan feeding mouth of heating end rotary drum, the discharge gate of hot junction rotary drum passes through the heating end unloader and is connected with the pan feeding mouth of cooling end rotary drum, the discharge gate and the cooling end unloader of cooling end rotary drum are connected.

Preferably, the cooling end drum is provided with cooling means.

The utility model discloses for prior art have following advantage:

1. the utility model discloses a rotary kiln rotary drum has set up raise dust board unit, guide ring, preceding spiral baffle and back spiral baffle in the barrel, and the spiral opposite direction of preceding spiral baffle and back spiral baffle, then when the rotary kiln rotary drum is as the heating end rotary drum, can prolong the ejection of compact time of material to the heat time of extension material still can avoid taking place the condition emergence that the material takes place the feed back simultaneously, avoids producing the material overstock.

2. The utility model discloses a rotary kiln rotary drum has set up raise dust board unit, guide ring, preceding spiral baffle and back spiral baffle in the barrel, and the spiral opposite direction of preceding spiral baffle and back spiral baffle, then when the rotary kiln rotary drum is regarded as the cooling end rotary drum, can prolong the ejection of compact time of material to the cooling time of extension material, the material can get into fast simultaneously, prevents that the material is overheated.

3. The utility model discloses a set up the raise dust board in the rotary kiln rotary drum, and have certain contained angle between the inner wall of raise dust board and barrel, carry out the pivoted in-process at solid rotary kiln rotary drum, the material can be overturned to the raise dust board, guarantees the material even in the barrel, further avoids the material to take place to pile up.

4. The utility model discloses a be equipped with the guide ring in the rotary kiln rotary drum, rotate the in-process at the rotary kiln rotary drum, the guide ring can the dosing, and the effective control material is in the quantity of barrel, the dwell time of accurate control material when the constant temperature section and the heating section in the barrel.

5. The utility model discloses the rotary kiln adopts the utility model discloses a rotary kiln rotary drum constitutes, time when can effectively prolong the material heating and when cooling, and sintering time is controllable, and the cooling effect is good.

Drawings

Fig. 1 is a schematic structural view of a rotary kiln drum of the present invention.

Fig. 2 is a schematic side view of the rotary kiln drum of the present invention.

Fig. 3 is a schematic structural view of the material guiding ring of the present invention.

Fig. 4 is a schematic side view of the material guiding ring of the present invention.

Fig. 5 is a front view of the material guiding ring of the present invention.

Fig. 6 is a schematic structural view of the front spiral baffle of the present invention.

Fig. 7 is a schematic structural diagram of the rear spiral baffle of the present invention.

Fig. 8 is a schematic structural view of the rotary kiln of the present invention.

Wherein, 1 is the barrel, 2 is the raise dust board unit, 3 is the guide ring, 4 is preceding spiral baffle, 5 is back spiral baffle, 6 is the inner chamber, 7 is the raise dust board, 8 is first support frame, 9 is the second support frame, 10 is heating end feed arrangement, 11 is heating end unloader, 12 is cooling end unloader, 13 is the heating end rotary drum, 14 is the cooling end rotary drum, 15 is cooling device.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The rotary kiln drum as shown in fig. 1 comprises a drum body, a dust raising plate unit, a material guide ring, a front spiral baffle and a rear spiral baffle, wherein an inner cavity is arranged in the drum body, the front spiral baffle and the rear spiral baffle are respectively arranged at the front end and the rear end of the inner cavity, the material guide ring and the dust raising plate unit are alternately arranged in the inner cavity in the advancing direction of materials in the inner cavity, and the material guide ring and the dust raising plate unit are both positioned between the front spiral baffle and the rear spiral baffle. The dust board unit includes at least one row of dust board, and every row of dust board contains 2 at least dust boards, and each dust board in every row of dust board is for the axis circumference evenly distributed of barrel.

Specifically, as shown in fig. 1, in this embodiment, each dust plate unit has two rows of dust plates, that is, each two rows of dust plates and one material guide ring are alternately arranged in the cylinder. As shown in fig. 4, each row of dust boards contains 4 dust boards, and the 4 dust boards are uniformly distributed relative to the circumference of the axis of the cylinder. One end of each dust raising plate is fixed on the inner wall of the cylinder body, and the included angle between each dust raising plate and the radial direction of the cylinder body is 30-60 degrees. In this embodiment, the included angle between the dust raising plates and the radial direction of the cylinder is 45 °, and simultaneously, each dust raising plate is inclined counterclockwise relative to the axis of the cylinder. As shown in fig. 3 to 7, the guide ring and the front spiral baffle are both clockwise spirals, and the rear spiral baffle is arranged counterclockwise spirally, that is, the spiral direction of the guide ring is the same as the spiral direction of the front spiral baffle but opposite to the rotation direction of the rear spiral baffle. When the rotary kiln drum rotates clockwise and serves as the heating end drum, materials can quickly enter the heating area of the heating end drum, feed back at the feeding end is prevented, the situation that the furnace end accumulates the materials is avoided, then the spiral baffle blocks the materials to delay discharging, and the material heating time can be prolonged; when the rotary kiln rotary drum rotates clockwise and serves as the rotary drum at the cooling end, materials can quickly enter the cooling area, the materials are prevented from being overheated, and the cooling of the materials can be accelerated. The rear spiral baffle blocks the material, the material is discharged in a delayed manner, and the material cooling time can be prolonged.

As shown in fig. 3 to 5, the guide ring is an open guide ring, the open guide ring is spirally disposed, and a spiral direction of the open guide ring is consistent with a spiral direction of the front spiral baffle. The spiral direction of the opening material guide ring is clockwise rotation, so that the material can quickly reach the heating section or the cooling section in the cylinder body, and the heating or cooling effect of the material is improved.

The number of the dust raising plate units is the same as that of the material guide rings. In this embodiment, the number of the dust raising plate units and the number of the material guiding rings are both 6, and the number of the dust raising plate units and the number of the material guiding rings can be determined according to the length of the cylinder body.

The screw pitch of preceding spiral baffle is 50 ~ 150mm, the screw pitch of back spiral baffle is 50 ~ 150 mm. In this embodiment, the screw pitches of the front spiral baffle and the rear spiral baffle are both 80 mm. The screw pitch with proper size is selected to ensure that the materials can smoothly pass through, so that the materials are prevented from being stacked.

As shown in fig. 8, a rotary kiln includes a first support frame, a second support frame, a heating end feeding device, a heating end discharging device, a cooling end discharging device, and two rotary kiln drums, wherein one rotary kiln drum is a heating end drum, the other rotary kiln drum is a cooling end drum, the heating end drum is mounted on the first support frame, the cooling end drum is mounted on the second support frame, the heating end feeding device is connected with a feeding port of the heating end drum, a discharge port of the hot end drum is connected with a feeding port of the cooling end drum through the heating end discharging device, and a discharge port of the cooling end drum is connected with the cooling end discharging device. In this embodiment, the heating end feeding device, the heating end blanking device and the cooling end blanking device all adopt the existing devices to reduce the design cost.

The cooling end rotary drum is provided with a cooling device. In the embodiment, the cooling device adopts the existing cooling device and mainly comprises a cooling cylinder which is sleeved on the cooling end rotary cylinder.

The above-mentioned specific implementation is the preferred embodiment of the present invention, can not be right the utility model discloses the limit, any other does not deviate from the technical scheme of the utility model and the change or other equivalent replacement modes of doing all contain within the scope of protection of the utility model.

Claims (10)

1. A rotary kiln drum characterized by: the dust collecting device comprises a cylinder body, a dust raising plate unit, a guide ring, a front spiral baffle and a rear spiral baffle, wherein an inner cavity is arranged in the cylinder body, the front spiral baffle and the rear spiral baffle are respectively arranged at the front end and the rear end of the inner cavity, the material is arranged in the advancing direction of the inner cavity, the guide ring and the dust raising plate unit are alternately arranged in the inner cavity, the guide ring and the dust raising plate unit are both positioned between the front spiral baffle and the rear spiral baffle, and the spiral direction of the front spiral baffle is opposite to the spiral direction of the rear spiral baffle.

2. The rotary kiln drum as claimed in claim 1, wherein: the dust board unit includes at least one row of dust board, and every row of dust board contains 2 at least dust boards, and each dust board in every row of dust board is for the axis circumference evenly distributed of barrel.

3. The rotary kiln drum as claimed in claim 2, wherein: one end of each dust raising plate is fixed on the inner wall of the cylinder body, and the included angle between each dust raising plate and the radial direction of the cylinder body is 30-60 degrees.

4. The rotary kiln drum as claimed in claim 1, wherein: the material guide ring is an open material guide ring, the open material guide ring is spirally arranged, and the spiral direction of the open material guide ring is consistent with the spiral direction of the front spiral baffle.

5. The rotary kiln drum as claimed in claim 1, wherein: the number of the dust raising plate units is the same as that of the material guide rings.

6. The rotary kiln drum as claimed in claim 1, wherein: each dust raising plate unit comprises 2-4 rows of dust raising plates.

7. The rotary kiln drum as claimed in claim 2, wherein: each row of dust raising plates comprises 2-6 dust raising plates.

8. The rotary kiln drum as claimed in claim 1, wherein: the screw pitch of preceding spiral baffle is 50 ~ 150mm, the screw pitch of back spiral baffle is 50 ~ 150 mm.

9. A rotary kiln is characterized in that: the rotary kiln comprises a first support frame, a second support frame, a heating end feeding device, a heating end discharging device, a cooling end discharging device and two rotary kiln drums according to one of claims 1 to 8, wherein one rotary kiln drum is a heating end drum, the other rotary kiln drum is a cooling end drum, the heating end drum is installed on the first support frame, the cooling end drum is installed on the second support frame, the heating end feeding device is connected with a feeding port of the heating end drum, a discharge port of the hot end drum is connected with a feeding port of the cooling end drum through the heating end discharging device, and a discharge port of the cooling end drum is connected with the cooling end discharging device.

10. The rotary kiln as claimed in claim 9, wherein: the cooling end rotary drum is provided with a cooling device.

Images