Rotary furnace

Abstract

The utility model relates to the technical field of battery material drying, in particular to a rotary furnace which comprises a base, a rotary furnace body and a feeding mechanism, the rotary furnace body and the feeding mechanism are rotatably arranged on the base, the rotary furnace body comprises a furnace tube and a heating body sleeved on the periphery of the furnace tube, and a feeding port and a discharging port are respectively arranged at the front end and the rear end of the furnace tube. The feeding mechanism comprises a feeding channel and a spiral feeding shaft rotationally arranged in the feeding channel, one end of the feeding channel extends into the furnace tube through the feeding port, an exhaust settling box communicated with the furnace tube is installed at the front end of the furnace tube, the exhaust settling box is located outside the feeding channel, and the exhaust settling box is arranged in a vertically-through mode; an exhaust port is formed in the top of the exhaust settling box, a material recovery port is formed in the bottom of the exhaust settling box, and a material blocking part is arranged at the position, corresponding to the feeding port, in the exhaust settling box and used for blocking to-be-dried materials flying out of the feeding port and then discharging and recovering the to-be-dried materials through the material recovery port, so that efficient recycling of the materials is achieved, and the recycling rate is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery material drying technical field, concretely relates to a rotary furnace. BACKGROUND

[0002] The existing rotary furnace for battery material drying, the front end of the furnace tube is provided with an exhaust settling tank communicated with the furnace tube, the exhaust settling tank is provided with an upper and lower through hole, in the rotating process of the furnace tube, the powder material of the semi-finished product to be dried in the furnace tube is easy to fly into the exhaust settling tank through the feed inlet at the front end, most of the material will be discharged to the outside through the exhaust port above the exhaust settling tank along with the flue gas, only a small part of the material falls back through the material recovery port below the exhaust settling tank, the recycling rate is low, which leads to serious waste of material. SUMMARY

[0003] The utility model aims at providing a rotary furnace to solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: a rotary furnace, comprising a base, a rotary furnace body and a feeding mechanism, the rotary furnace body comprises a furnace tube and a heating body sleeved on the outer periphery of the furnace tube, the front and rear ends of the furnace tube are respectively provided with a feed inlet and a discharge outlet, the feeding mechanism comprises a feeding channel and a spiral feeding shaft rotatingly arranged in the feeding channel, one end of the feeding channel extends into the furnace tube through the feed inlet, the front end of the furnace tube is provided with an exhaust settling tank communicated with the furnace tube, the exhaust settling tank is located outside the feeding channel, the exhaust settling tank is provided with an upper and lower through hole, the top of the exhaust settling tank is provided with an exhaust port, the bottom is provided with a material recovery port, a blocking piece is arranged in the exhaust settling tank corresponding to the feed inlet, which is used for blocking the material to be dried flying out of the feed inlet and discharging and recycling through the material recovery port.

[0005] Preferably, the blocking piece comprises a U-shaped baffle with a U-shaped cross section and an upper baffle blocked on the top of the U-shaped baffle, the opening of the U-shaped baffle is towards the side of the feed inlet, and the U-shaped baffle is provided with a gap for the feeding channel to pass through.

[0006] Preferably, an exhaust channel is formed between the U-shaped baffle and the exhaust settling tank.

[0007] Preferably, one end of the furnace tube corresponding to the discharge outlet is provided with a discharge tank communicated with the furnace tube, the bottom of the discharge tank is provided with a discharge port for discharging the finished product material after drying.

[0008] Preferably, it further comprises an expansion sealing piece, the front and rear ends of the furnace tube are respectively sealed and assembled with the exhaust settling tank and the discharge tank through the expansion sealing piece.

[0009] Preferably, the rotary furnace body is externally provided with a protective shell, a heat insulation chamber is formed between the protective shell and the rotary furnace body, and a dust extraction mechanism is arranged on the protective shell and communicates with the heat insulation chamber, for extracting flue dust in the heat insulation chamber to the outside.

[0010] Preferably, a feeding bin is connected to the upper side of the end of the feeding channel away from the furnace pipe, and a disperser is rotatably arranged in the feeding bin, for dispersing the material.

[0011] Preferably, the heating temperature of the furnace pipe ranges from 1 to 1000 degrees, the diameter of the furnace pipe ranges from 0.6 to 1.6 m, the length of the furnace pipe ranges from 6 to 24 m, the furnace pipe is gradually inclined downward from the feeding port to the discharging port, and the inclination angle ranges from 1 to 2 degrees, and a knocking hammer is arranged on the furnace pipe.

[0012] Preferably, the heating body comprises a furnace rotor and a heating element arranged in the furnace rotor, and the heating element is an electric heating wire or a silicon-carbon rod.

[0013] Preferably, the material is tungsten-molybdenum material.

[0014] The utility model has the following beneficial effects:

[0015] The utility model discloses a material blocking piece is arranged in the exhaust settling tank corresponding feeding port, and this setting makes the material to be dried in the furnace pipe after flying out from the feeding port can be blocked by the material blocking piece and then falls down, and then is discharged and is recycled through the material recovery port, reduces the dust of material, avoids most materials following flue dust and discharging to the outside through the exhaust port above the exhaust settling tank, makes most materials fall and recycle through the material recovery port below the exhaust settling tank, realizes the efficient recycling of material, and the recycling rate is high. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is the structure schematic diagram of the embodiment of the utility model.

[0017] Fig. 2 It is the schematic diagram of the material blocking piece of the embodiment of the utility model at one angle.

[0018] Fig. 3 It is the schematic diagram of the material blocking piece of the embodiment of the utility model at another angle.

[0019] Label: 1 base, 2 protective shell, 3 furnace tube, 31 feeding port, 32 discharging port, 4 heating body, 41 furnace rotation, 42 heating part, 5 feeding channel, 6 screw feeding shaft, 7 feeding bin, 8 disperser, 9 first driving motor, 10 second driving motor, 11 exhaust settling tank, 111 exhaust port, 112 material recycling port, 113 exhaust channel, 12 material blocking part, 121 U-shaped blocking plate, 122 upper blocking plate, 123 accommodation opening, 13 discharging box, 131 discharging port, 14 expansion sealing part, 15 heat insulation chamber, 16 dust extraction mechanism, 17 knocking hammer, 18 front supporting roller, 19 rear supporting roller. DETAILED DESCRIPTION

[0020] To further illustrate the embodiments, the utility model provides the drawings. These drawings are part of the utility model disclosure, which is mainly used to illustrate the embodiments, and can be combined with the related description of the specification to explain the operation principle of the embodiments. With reference to these contents, those skilled in the art should understand other possible embodiments and the advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0021] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two; The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the utility model, it should be pointed out that, unless otherwise specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; It can be mechanically connected, or it can be electrically connected; It can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] Reference Figs. 1-3As shown, as an embodiment of the present application, a rotary furnace is provided, specifically a rotary furnace for drying tungsten-molybdenum material, comprising a base 1, a rotary furnace body and a feeding mechanism rotatably arranged on the base 1, the rotary furnace body comprising a furnace tube 3 and a heating body 4 sleeved on the outer periphery of the furnace tube 3, the front and rear ends of the furnace tube 3 are respectively provided with a feeding port 31 and a discharging port 32, the feeding mechanism comprises a feeding channel 5 and a spiral feeding shaft 6 rotatably arranged in the feeding channel 5, one end of the spiral feeding shaft 6 is connected with a first driving motor 9, the first driving motor 9 drives the spiral feeding shaft 6 to rotate and feed, the spiral feeding shaft 6 can better control the production feeding amount, one end of the feeding channel 5 extends into the furnace tube 3 through the feeding port 31, the front end of the furnace tube 3 is provided with an exhaust settling tank 11 communicated with the furnace tube 3, the exhaust settling tank 11 is located outside the feeding channel 5, the exhaust settling tank 11 is provided in a through manner from top to bottom, the top of the exhaust settling tank 11 is an exhaust port 111, and the bottom is a material recovery port 112, a blocking piece 12 is arranged in the exhaust settling tank 11 corresponding to the feeding port 31, for blocking the flying material to be dried at the feeding port 31 and then discharging and recycling through the material recovery port 112, the setting makes the material in the furnace tube 3 fly out from the feeding port 31 and then be blocked by the blocking piece 12 and fall downward, and then be discharged and recycled through the material recovery port 112, reducing the dust of the material, avoiding most of the material from being discharged to the outside through the exhaust port 111 above the exhaust settling tank 11 along with the flue dust, making most of the material fall and recycle through the material recovery port 112 below the exhaust settling tank 11, realizing efficient recycling of the material, and having high recycling rate.

[0024] Of course, the rotary furnace of the present application can also be used for drying powder materials other than tungsten-molybdenum materials, which is not limited herein, and can be battery materials.

[0025] In the embodiment, the blocking piece 12 comprises a U-shaped baffle 121 with a U-shaped cross section and an upper baffle 122 blocked on the top of the U-shaped baffle 121, the opening of the U-shaped baffle 121 faces one side of the feeding port 31, the U-shaped baffle 121 is provided with a gap 123 for the feeding channel 5 to pass through, and an exhaust channel 113 is formed between the U-shaped baffle 121 and the exhaust settling tank 11, that is, the upper baffle 122 can prevent the flue dust formed by the material from flying upward, so that most of the material falls downward through the material recovery port 112 from the middle part, and a small part of the flue dust passes through the exhaust channel 113 upwardly through the exhaust port 111 to the outside, further improving the recycling rate of the material.

[0026] In the embodiment, one end of the furnace tube 3 corresponding to the discharging port 32 is provided with a discharging tank 13 communicated with the furnace tube 3, and the bottom of the discharging tank 13 is provided with a discharging port 131 for discharging the finished product after drying.

[0027] In the embodiment, the front and rear ends of the furnace tube 3 are respectively sealed and assembled with the exhaust settling tank 11 and the discharge tank 13 through the expansion seals 14, and specifically, the expansion seals 14 adopt graphite material dynamic and static ring rotary seals.

[0028] In the embodiment, the rotary furnace body is externally provided with a protective shell 2, a heat insulation chamber 15 is formed between the protective shell 2 and the rotary furnace body, a dust extraction mechanism 16 is arranged on the protective shell 2 and communicates with the heat insulation chamber 15, and the dust extraction mechanism 16 is used for extracting flue dust in the heat insulation chamber 15 to the outside, and the dust extraction mechanism 16 comprises an exhaust pipe and an exhaust fan, and the exhaust pipe communicates with the heat insulation chamber 15.

[0029] In the embodiment, the feeding channel 5 is connected with a feeding bin 7 at the upper side of the end away from the furnace tube 3, a disperser 8 is rotatably arranged in the feeding bin 7, one end of the disperser 8 is connected with a second driving motor 10, and the first driving motor 9 drives the disperser 8 to rotate to scatter the material and prevent the material from being accumulated and bridged. The disperser 8 comprises a rotating shaft and first and second dispersing blades arranged on the outer wall of the rotating shaft, and the first and second dispersing blades are arranged on the opposite sides of the rotating shaft, thereby improving the dispersing effect.

[0030] In the embodiment, the heating temperature range of the furnace tube 3 is 1°-1000°, the material to be heated is tungsten-molybdenum material, the application in the lithium ion battery is mainly as a positive electrode material, the heating temperature of the furnace tube 3 is preferably 800°, the diameter range of the furnace tube 3 is 0.6-1.6m, the length range of the furnace tube 3 is 6-24m, the furnace tube 3 is gradually inclined downward from the feeding port 31 to the discharging port 32, and the inclination angle range is 1-2°, so as to ensure the discharging efficiency and smoothness. The furnace tube 3 is provided with a knocking hammer 17 to prevent the powder from being adhered, blocked and bridged in the furnace tube 3, and the knocking hammer 17 will not cause operation and deformation of the furnace tube 3.

[0031] In the embodiment, the heating body 4 comprises a furnace rotary 41 and a heating element 42 mounted in the furnace rotary 41, and the heating element 42 is an electric furnace wire or a silicon-carbon rod.

[0032] In the embodiment, the base 1 is provided with a front supporting roller 18 and a rear supporting roller 19, and the front and rear ends of the furnace tube 3 are rotatably arranged at the front and rear supporting rollers 18 and 19.

[0033] Although the utility model is specifically shown and introduced in combination with the preferred embodiment, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all fall within the protection scope of the utility model.

Claims

1. A rotary kiln, characterized in that: The system includes a base and a rotary kiln body and a feeding mechanism rotatably mounted on the base. The rotary kiln body includes a furnace tube and a heating element sleeved around the outer periphery of the furnace tube. The front and rear ends of the furnace tube are respectively provided with a feed inlet and a discharge outlet. The feeding mechanism includes a feeding channel and a spiral feeding shaft rotatably mounted in the feeding channel. One end of the feeding channel extends into the furnace tube through the feed inlet. An exhaust settling box connected to the furnace tube is installed at the front end of the furnace tube. The exhaust settling box is located outside the feeding channel and is arranged vertically. The top of the exhaust settling box is the exhaust port, and the bottom is the material recovery port. A baffle is provided in the exhaust settling box corresponding to the feed inlet to block the material to be dried flying out of the feed inlet and then discharge it for recovery through the material recovery port.

2. The rotary kiln according to claim 1, characterized in that: The baffle includes a U-shaped baffle with a U-shaped cross-section and an upper baffle that blocks the top of the U-shaped baffle. The opening of the U-shaped baffle faces the feed inlet, and a clearance opening is provided on the U-shaped baffle for the feed channel to pass through.

3. The rotary kiln according to claim 2, characterized in that: An exhaust channel is formed between the U-shaped baffle and the exhaust settling box.

4. The rotary kiln according to claim 1, characterized in that: A discharge box connected to the furnace tube is installed at one end of the furnace tube corresponding to the discharge port. The bottom of the discharge box is provided with a discharge port for the dried finished material to be discharged.

5. The rotary kiln according to claim 4, characterized in that: It also includes expansion seals, with the front and rear ends of the furnace tube respectively sealed to the exhaust settling box and the unloading box via expansion seals.

6. The rotary kiln according to claim 1, characterized in that: The rotary kiln body is equipped with a protective shell, and a heat insulation chamber is formed between the protective shell and the rotary kiln body. The protective shell is equipped with a dust extraction mechanism that communicates with the heat insulation chamber, which is used to extract the flue gas and dust in the heat insulation chamber to the outside.

7. The rotary kiln according to claim 1, characterized in that: A feeding hopper is connected to the upper side of the feeding channel away from the furnace tube. A disperser is installed in the feeding hopper to disperse the material.

8. The rotary kiln according to claim 1, characterized in that: The heating temperature range of the furnace tube is 1° to 1000°, the diameter range is 0.6 to 1.6 m, the length range is 6 to 24 m, the furnace tube is gradually inclined downward from the feed inlet to the discharge outlet, and the inclination angle ranges from 1 to 2°, and a hammer is installed on the furnace tube.

9. The rotary kiln according to claim 1, characterized in that: The heating element includes the furnace rotor and the heating element installed inside the furnace rotor. The heating element is an electric heating wire or a silicon carbide rod.

10. The rotary kiln according to any one of claims 1-9, characterized in that: The material is tungsten-molybdenum.

Images