CN212299931U

CN212299931U - Environment-friendly lithium iron phosphate precursor sintering device

Info

Publication number: CN212299931U
Application number: CN202020201665.XU
Authority: CN
Inventors: 喻国强; 刁玉龙
Original assignee: Sichuan Youyuan New Energy Co ltd
Current assignee: Sichuan Youyuan New Energy Co ltd
Priority date: 2020-02-24
Filing date: 2020-02-24
Publication date: 2021-01-05
Anticipated expiration: 2030-02-24

Abstract

The utility model provides an environment-friendly lithium iron phosphate precursor sintering device, which comprises a furnace body, wherein the top end of the furnace body is provided with a furnace cover, a cooling chamber is arranged below the furnace body, a heating chamber, a motor, a fixed feeding end, a screw rod, a heating device and a discharging end are also arranged on the furnace body, the screw rod is positioned in the heating chamber, a rotating shaft is arranged on the screw rod, the rotating shaft penetrates through the fixed feeding end to be connected with a main shaft of the motor, the rotating shaft is driven to rotate by the driving of the motor, the heating device is positioned outside the heating chamber and heats the heating chamber by the heating device, the outlet end is positioned at the bottom of the screw rod, the discharge end is connected with the cooling chamber, a spiral pipe, a one-way air inlet pipe and a one-way air outlet pipe are arranged in the cooling chamber, the one-way air inlet pipe is communicated with the outside of the one-way air outlet pipe and is connected with an annular pipe, and be equipped with the extension pipe that extends to the cooling chamber outside in the one-way intake pipe, be connected with the nitrogen gas jar on the extension pipe, the utility model discloses obtainable beneficial effect: by the method, the cooling time can be effectively shortened, and the production efficiency is improved.

Description

Environment-friendly lithium iron phosphate precursor sintering device

Technical Field

The utility model relates to a sintering equipment field specifically is an environmental protection lithium iron phosphate precursor sintering device.

Background

The lithium ion battery has the advantages of high discharge rate, wide use temperature range, excellent cycle performance, good safety, environmental protection, no pollution and the like, is widely applied to portable electronic equipment such as mobile phones, portable computers, small cameras and the like since the past, is used as a new generation energy material, is continuously promoted in the fields of electric automobiles, satellites, aerospace, military and the like, and has wide application prospect. The anode material is an important component of the lithium ion battery and is a key point for researching and developing the high-performance lithium ion battery. Lithium iron phosphate (LiFePO4) is used as the anode material of the lithium battery, has the advantages of rich raw material source, low price, no environmental pollution, higher capacity, excellent cycle performance, good stability, outstanding safety performance of the prepared battery and the like, has great market prospect in various battery energy fields, particularly in the aspect of large-scale power supply application, and is one of the most promising anode materials of the lithium battery.

The sintering furnace at the present stage can meet the basic use requirements when in use, but still has defects and shortcomings in some aspects when in actual use:

1. the interior of the sintering furnace is easy to be heated unevenly during sintering and heating;

2. the existing equipment usually adopts natural cooling after sintering, the process is time-consuming and labor-consuming, the processing efficiency is influenced, and the cost is wasted.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

Not enough to prior art, the utility model provides an environmental protection lithium iron phosphate precursor sintering device solves the inside sintering heating of current sintering furnace easy to be heated inhomogeneous to adopt natural cooling usually after the sintering, this process is wasted time and energy, influences machining efficiency moreover, causes the problem of the waste of cost.

(II) technical scheme

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

the utility model provides an environment-friendly lithium iron phosphate precursor sintering device, which comprises a furnace body, wherein the top end of the furnace body is provided with a furnace cover, a cooling chamber is arranged below the furnace body, the furnace body is also provided with a heating chamber, a motor, a fixed feeding end, a screw rod, a heating device and a discharging end, the screw rod is positioned in the heating chamber, the screw rod is provided with a rotating shaft, the rotating shaft passes through the fixed feeding end and is connected with a main shaft of the motor, the rotating shaft is driven to rotate by the motor, the heating device is positioned outside the heating chamber, the heating chamber is heated by the heating device, the discharging end is positioned at the bottom of the screw rod, the discharging end is connected with the cooling chamber, the cooling chamber is internally provided with a screw tube, a one-way air inlet tube and a one-way air outlet tube, the one-way air inlet tube is conductively, and the extension pipe is connected with a nitrogen tank.

The utility model discloses further set up to: heating device includes hot trachea, controlling means and connects a plurality of shower nozzles on the hot trachea, the hot trachea is whole to be formed by the combination of ring tube and column pipe, and is a plurality of the shower nozzle is located both sides column pipe, and a plurality of shower nozzles are linear array and distribute on both sides column pipe, one side and the controlling means of hot trachea are connected, and switch on in the hot trachea by the diffusion of ring tube to both sides column pipe, through a plurality of shower nozzles on the column pipe are lighted and are spouted.

The utility model discloses further set up to: the outlet end is provided with a discharge pipe, and a first valve is arranged at the junction of the outlet end and the spiral pipe.

The utility model discloses further set up to: and a second valve is arranged between the extension pipe and the nitrogen tank.

The utility model discloses further set up to: and a discharge hole is formed in the bottom of the spiral pipe, and a valve III is arranged on the discharge hole.

The utility model discloses further set up to: the screw rod makes circular motion in the heating chamber by taking the rod as an axis.

The utility model discloses further set up to: the side wall of the heating chamber is made of ceramic materials.

The utility model discloses further set up to: the furnace cover and the fixed feeding end are arranged in an up-and-down symmetrical mode, a plurality of feeding holes distributed in a circular array mode are formed in the fixed feeding end, and one ends of the feeding holes penetrate through the spiral rods in the heating chamber.

The utility model discloses further set up to: and a sealing gasket is arranged on the inner wall of the furnace cover, and the furnace cover is in threaded connection with the furnace body.

To sum up, the utility model discloses following beneficial effect has: the utility model provides an environment-friendly lithium iron phosphate precursor sintering device, which comprises a furnace body, the furnace body of setting still is equipped with the heating chamber, including a motor, an end cap, a fixed feed end, the hob, heating device and discharge end, it rotates to drive the pivot through motor drive, make the hob in the heating chamber use the pole itself as the axle center to do circular motion, after this puts into the sinter, the sinter distributes evenly on the hob, heat the heating chamber through heating device, in the hob operation process, make the sinter heated evenly, so to the back of having heated, flow out through the exit end, the exit end that sets up is located the bottom of hob, the sinter after the processing is from the exit end to the cooling chamber, be equipped with the spiral pipe in the cooling chamber, one-way intake pipe and one-way outlet duct's outside conduction connection has the ring canal, gas lets in through the nitrogen, the gas is discharged from the one-way gas outlet pipe and circulates through the annular pipe to form circulating gas, so that the spiral pipe is cooled, the cooling time is effectively shortened, the production cost is saved, and the production efficiency is improved.

Drawings

Fig. 1 is a schematic diagram of the overall structure of an environment-friendly lithium iron phosphate precursor sintering device of the present invention;

fig. 2 is a top view of an environment-friendly lithium iron phosphate precursor sintering device of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

fig. 4 is a schematic structural view of the connection between the spiral rod and the spiral tube of the environment-friendly lithium iron phosphate precursor sintering device of the present invention;

fig. 5 is a schematic structural diagram of a hot air pipe of the environment-friendly lithium iron phosphate precursor sintering device of the present invention;

fig. 6 is a schematic structural diagram of a cooling chamber of the environment-friendly lithium iron phosphate precursor sintering device of the present invention.

In the figure: 1. a furnace body; 2. a furnace cover; 3. a cooling chamber; 4. a heating chamber; 5. a motor; 6. fixing a feeding end; 7. a screw rod; 8. a heating device; 9. a discharge end; 10. a rotating shaft; 11. a spiral tube; 12. a one-way air inlet pipe; 13. a unidirectional air outlet pipe; 14. a ring pipe; 15. an extension pipe; 16. a nitrogen tank; 17. a hot gas pipe; 18. a control device; 19. a spray head; 20. a circular ring tube; 21. a cylindrical tube; 22. a first valve; 23. a second valve; 24. a third valve; 25. a discharge port; 26. a feed port; 27. sealing gaskets; 28. and (4) discharging the pipe.

Detailed Description

In order to make the technical means, innovative features, objectives and effects of the present invention apparent and understood, the present invention will be further described with reference to the accompanying drawings, in which the described embodiments are only some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "front", "back", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, connected through an intermediate medium, or connected to the inside of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-6, the utility model provides a technical scheme, an environment-friendly lithium iron phosphate precursor sintering device, comprising a furnace body 1, a furnace cover 2 arranged on the top of the furnace body 1, and a cooling chamber 3 arranged below the furnace body 1, when sinter is sintered in the furnace body 1, the sinter is cooled by the cooling chamber 3, so as to shorten the processing time and effectively improve the production efficiency, a heating chamber 4, a motor 5, a fixed feeding end 6, a screw 7, a heating device 8 and a discharging end 9 are arranged on the furnace body 1, the screw 7 is arranged in the heating chamber 4, a rotating shaft 10 is arranged on the screw 7, the rotating shaft 10 passes through the fixed feeding end 6 to be connected with a main shaft of the motor 5, the rotating shaft 10 is driven by the motor 5 to rotate, the screw 7 is driven to do circular motion in the heating chamber 4 by taking the rod as an axis, so that after the sinter is put in, the sinter is uniformly distributed on the screw 7, the heating device 8 comprises a hot air pipe 17, a control device 18 and a plurality of spray heads 19 connected to the hot air pipe 17, the whole hot air pipe 17 is formed by combining an annular pipe 20 and a cylindrical pipe 21, the plurality of spray heads 19 are arranged on the cylindrical pipes 21 on two sides, the plurality of spray heads 19 are distributed on the cylindrical pipes 21 on two sides in a linear array manner, one side of the hot air pipe 17 is connected with the control device 18, the control device 18 is controlled by the control device 18 to externally supply fuel gas to ventilate the hot air pipe 17, the fuel gas is conducted in the hot air pipe 17 and is diffused to the cylindrical pipes 21 on two sides from the annular pipe 20, the plurality of spray heads 19 on the cylindrical pipe 21 are used for igniting and radiating heat to heat the heating chamber 4, and then flows out through an outlet end after the heating is finished, the outlet end is arranged at the bottom of the spiral rod 7, and the outlet end is provided with a discharge pipe 28, the junction of the discharge pipe 28 and the spiral pipe 11 is provided with a valve I22, after the sinter is processed in the heating chamber 4, the valve I22 on the outlet end is opened to lead the processed sinter to be from the outlet end to the cooling chamber 3, the arranged cooling chamber 3 is internally provided with the spiral pipe 11, a one-way air inlet pipe 12 and a one-way air outlet pipe 13, the one-way air inlet pipe 12 is communicated and connected with a ring pipe 14 with the outside of the one-way air outlet pipe 13, the one-way air inlet pipe 12 is provided with an extension pipe 15 extending to the outside of the cooling chamber 3, the extension pipe 15 is connected with a nitrogen tank 16, a valve II 23 is arranged between the extension pipe 15 and the nitrogen tank 16, the gas in the nitrogen tank 16 is led into the one-way air inlet pipe 12 by the control of the valve II 23, the gas enters, with this to spiral pipe 11 cool off, effectively shorten the cooling, save manufacturing cost, improve production efficiency, the spiral pipe 11 bottom that sets up is equipped with discharge gate 25, is equipped with three 24 of valve on the discharge gate 25, after the cooling, opens three 24 of valve, collects the sintering finished product from discharge gate 25.

The side wall of the heating chamber 4 is made of ceramic materials, the ceramic materials have good heat conducting performance, and heat energy heats the heating chamber 4 through the side wall.

The furnace cover 2 and the fixed feeding end 6 are arranged symmetrically up and down, a plurality of feeding holes 26 distributed in a circular array are formed in the fixed feeding end 6, one end of each feeding hole 26 penetrates through the screw rod 7 in the heating chamber 4, and therefore sinter added from the feeding holes 26 directly enters the screw rod 7, and raw materials are conveniently processed.

Be equipped with seal gasket 27 on the inner wall of bell 2,

bell

2 and 1 threaded connection of furnace body simultaneously to this realizes that bell 2 is connected the back with furnace body 1, and seal gasket 27 zonulae occludens is between bell 2 and fixed feed end 6, guarantees the gas tightness of device, does the utility model discloses the sintering provides sealed guarantee.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an environmental protection lithium iron phosphate precursor sintering device, includes furnace body (1), its characterized in that: furnace body (1) top is equipped with bell (2), and the below of furnace body (1) is equipped with cooling chamber (3), still be equipped with heating chamber (4), motor (5), fixed feed end (6), hob (7), heating device (8) and discharge end (9) on furnace body (1), hob (7) are located heating chamber (4), and are equipped with pivot (10) on hob (7), pivot (10) are passed fixed feed end (6) and are linked to each other with motor (5) main shaft, through motor (5) drive drives pivot (10) and rotate, heating device (8) are located the outside of heating chamber (4), warp heating device (8) heat heating chamber (4), discharge end (9) are located the bottom of hob (7), discharge end (9) are connected with cooling chamber (3), be equipped with spiral pipe (11) in cooling chamber (3), One-way intake pipe (12) and one-way outlet duct (13), the outside switch-on of one-way intake pipe (12) and one-way outlet duct (13) is connected with ring canal (14), and is equipped with extension (15) that extend to the cooling chamber (3) outside on one-way intake pipe (12), be connected with nitrogen gas jar (16) on extension (15).

2. The environment-friendly lithium iron phosphate precursor sintering device according to claim 1, characterized in that: heating device (8) are including hot trachea (17), controlling means (18) and a plurality of shower nozzle (19) of connection on hot trachea (17), hot trachea (17) are whole to be formed by the combination of ring tube (20) and column shape pipe (21), and are a plurality of shower nozzle (19) are located both sides column shape pipe (21), and are linear array distribution on both sides column shape pipe (21) in a plurality of shower nozzles (19), one side and controlling means (18) of hot trachea (17) are connected, and switch on in hot trachea (17) and spread by ring tube (20) to both sides column shape pipe (21), through a plurality of shower nozzles (19) on column shape pipe (21) are lighted and are spouted and scatter.

3. The environment-friendly lithium iron phosphate precursor sintering device according to claim 2, characterized in that: be equipped with discharging pipe (28) on discharge end (9), just discharge end (9) and spiral pipe (11) juncture are equipped with valve (22).

4. The environment-friendly lithium iron phosphate precursor sintering device according to claim 1, characterized in that: and a second valve (23) is arranged between the extension pipe (15) and the nitrogen tank (16).

5. The environment-friendly lithium iron phosphate precursor sintering device according to claim 1, characterized in that: and a discharge hole (25) is formed in the bottom of the spiral pipe (11), and a valve III (24) is arranged on the discharge hole (25).

6. The environment-friendly lithium iron phosphate precursor sintering device according to claim 1, characterized in that: the screw rod (7) makes circular motion in the heating chamber (4) by taking the rod as an axis.

7. The environment-friendly lithium iron phosphate precursor sintering device according to claim 1, characterized in that: the side wall of the heating chamber (4) is made of ceramic materials.

8. The environment-friendly lithium iron phosphate precursor sintering device according to claim 1, characterized in that: the furnace cover (2) and the fixed feeding end (6) are arranged in an up-and-down symmetrical mode, a plurality of feeding holes (26) distributed in a circular array mode are formed in the fixed feeding end (6), and one ends of the feeding holes (26) penetrate through the spiral rods (7) in the heating chamber (4).

9. The environment-friendly lithium iron phosphate precursor sintering device according to claim 8, characterized in that: the inner wall of the furnace cover (2) is provided with a sealing gasket (27), and the furnace cover (2) is in threaded connection with the furnace body (1).