CN219607729U - Be applied to multi-functional stove device of utmost point powder desorption - Google Patents

Abstract

The utility model discloses a multifunctional furnace device applied to polar powder desorption, which relates to the technical field of batteries and comprises: the device comprises a drum screen, a recycling bin, an air inlet mechanism, an air outlet mechanism and a impurity removing mechanism. The rotary screen is used for screening pole piece fragments and is rotatably arranged in the recycling bin; the recycling bin is used for collecting powder sieved by the drum screen; the air inlet mechanism is used for blowing protective atmosphere into the drum screen; the air outlet mechanism is used for discharging air in the recycling bin; the impurity removing mechanism is used for removing impurities, and the impurities comprise fluorine at least when the drum screen screens the pole piece fragments. The pole piece fragments can be screened and powder materials can be collected through the cooperation of the drum screen and the recycling bin, a required protective atmosphere can be provided for impurity removal through the air inlet mechanism, impurity fluorine can be effectively removed in the process of screening the powder materials through the impurity removal mechanism, and the scheme reduces production cost and improves efficiency; in addition, the utility model has the characteristics of simple process and the like.

Description

Be applied to multi-functional stove device of utmost point powder desorption

Technical Field

The utility model relates to the technical field of batteries, in particular to a multifunctional furnace device applied to polar powder desorption.

Background

At present, in some existing desorption modes of the pole powder of the recovery battery, the screened pole powder is doped with more impurities, such as fluorine, and fluorine is difficult to remove in the screening process, and other processes are needed for removing fluorine, so that the production cost is increased and the efficiency is low. In addition, the mode adopted in the desorption of the recovered battery electrode powder in the prior art comprises solvent desorption, conventional pyrolysis and the like, but the problems of high efficiency, low cost, simple process and the like cannot be simultaneously satisfied. The solvent desorption efficiency is low, but hazardous waste is generated, and the solvent loss is serious and the cost is high; the conventional pyrolysis desorption has low efficiency, more process steps, complex and fussy process and difficult mass use.

Therefore, it is necessary to develop a new polar powder desorption device to solve the above technical problems.

Disclosure of Invention

It is a primary object of the present utility model to overcome at least one of the above-mentioned drawbacks of the prior art.

In order to achieve the above object, according to one aspect of the present utility model, there is provided a multifunctional furnace device for polar powder desorption, which is capable of sieving polar powder and removing impurities, and specifically adopts the following technical scheme:

a multi-functional furnace apparatus for polar powder desorption, comprising:

the rotary screen is used for screening pole piece fragments and is rotatably arranged in the recycling bin;

the recycling bin is used for collecting powder sieved by the drum sieve;

the air inlet mechanism is at least used for blowing protective atmosphere into the drum screen;

the air outlet mechanism is used for exhausting the air in the recycling bin; and

the impurity removing mechanism is used for removing impurities at least when the pole piece fragments are screened by the drum screen;

wherein the impurity comprises fluorine.

Compared with the prior art, the technical scheme has the following beneficial effects:

the pole piece fragments can be screened and powder materials can be collected through the cooperation of the drum screen and the recycling bin, a required protective atmosphere can be provided for impurity removal through the air inlet mechanism, impurity fluorine can be effectively removed in the process of screening the powder materials through the impurity removal mechanism, and the scheme reduces production cost and improves efficiency; in addition, the utility model has the characteristics of simple process and the like.

Drawings

In order that the advantages of the utility model will be readily understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the utility model and are not therefore to be considered to be limiting of its scope, the utility model will be described and explained with additional specificity and detail through the use of the accompanying drawings.

Fig. 1 is a schematic diagram of a front view structure of a multifunctional furnace device for polar powder desorption according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of a feeding end of a trommel in a multi-functional furnace apparatus for polar powder desorption according to an embodiment of the present utility model;

fig. 3 is a schematic structural view of a collection end of a trommel in a multi-functional furnace apparatus for polar powder desorption according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of one end of a recycling bin near a collecting end in a multi-functional furnace device for polar powder desorption according to an embodiment of the present utility model.

The reference numerals are as follows:

1-a rotary screen, 101-a feeding end, 102-a collecting end, 103-a middle cylinder and 104-a movable plate;

2-a first driving unit;

3-a recycling bin, 301-a powder collecting port and 302-a movable door;

4-dividing plates;

5-collecting space;

6, an air inlet pipe;

7-an air supply unit;

8-an air outlet pipe and 801-a filter screen;

9-plasma spray gun;

10-a second drive unit;

11-an output shaft of the reduction mechanism;

12-stirring plate;

13-a crusher;

14-feeding pipe;

15-heating rod;

16-temperature sensor.

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that embodiments of the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the utility model.

In the description of the utility model, the term "a and/or B" means all possible combinations of a and B, such as a alone, B alone or a and B, the term "at least one a or B" or "at least one of a and B" has a meaning similar to "a and/or B" and may include a alone, B alone or a and B; the singular forms "a", "an" and "the" include plural referents; the terms "inboard", "outboard", "longitudinal", "transverse", "upper", "lower", "top", "bottom", etc. indicate an orientation or positional relationship based on that shown in the drawings, are merely for convenience of description of the utility model and do not require that the utility model must be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. Furthermore, the terms "exemplary" and "illustration" mean "serving as an example, embodiment, or illustration," any implementation of the utility model described as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments, and although various aspects of the embodiments are shown in the figures, the figures are not necessarily drawn to scale unless specifically indicated. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In order to facilitate understanding of the multifunctional furnace device applied to the desorption of the polar powder, the application scene of the multifunctional furnace device is firstly described, the multifunctional furnace device is used for further desorbing and separating the crushed polar powder and desorbing and collecting the polar powder, however, more impurities such as fluorine are doped in the polar powder after sieving in the prior art, the fluorine is difficult to remove in the sieving process, other processes are needed for removing the fluorine, the production cost is increased, and the efficiency is low. In addition, the mode adopted by the desorption of the recovered battery electrode powder in the prior art can not simultaneously meet the problems of high efficiency, low cost, simple process and the like. Therefore, the utility model provides a multifunctional furnace device applied to polar powder desorption, which is used for solving the prior technical problems.

Embodiments of the present utility model will be described in further detail below with reference to the attached drawings:

examples

Referring to fig. 1 to 4, the present embodiment provides a multi-functional furnace apparatus for polar powder desorption, comprising: the device comprises a rotary screen 1, a recycling bin 3, an air inlet mechanism, an air outlet mechanism and a impurity removing mechanism.

Wherein, the drum screen 1 and the recycling bin 3 are used as a screening mechanism for screening the powder of the pole piece; specifically, the rotary screen 1 is used for screening pole piece fragments, and the rotary screen 1 is rotatably arranged in the recycling bin 3; the recycling bin 3 is used for collecting powder screened out by the rotary screen 1. Of course, the screening mechanism is not limited to the above-mentioned cooperation structure of the trommel 1 and the recovery tank 3, and a multi-stage screening sieve, a screening box, and the like may be selected as required.

The air inlet mechanism is at least used for blowing protective atmosphere into the drum screen 1, wherein the protective atmosphere comprises inert gas so as to provide environment for removing impurities; the air outlet mechanism is matched with the air inlet mechanism for use and is mainly used for discharging the air in the recovery barrel 3 so as to ensure the air pressure balance in the recovery barrel 3.

The impurity removing mechanism is used for removing impurities, including fluorine, at least when the drum screen 1 screens the pole piece fragments. Specifically, the impurity removal mechanism includes: hydrogen and plasma spray gun 9, hydrogen is used for chemical reaction with fluorine to remove fluorine, hydrogen can be sprayed into the drum screen 1 through an air inlet mechanism or other air inlets; the plasma torch 9 protrudes into the interior of the trommel 1 and provides a plasma environment for at least the chemical reaction between hydrogen and fluorine.

Through the structural design, the pole piece fragments in the rotary screen 1 can be separated by utilizing the rotation of the rotary screen, so that powder (pole powder) is separated from a current collector, namely, the powder is desorbed, wherein the powder is sieved out through the sieve holes of the drum sieve 1 and falls into the recycling bin 3 and is collected by the recycling bin 3, and the collector is reserved inside the drum sieve 1 due to the large volume, so that the desorption and sieving of the pole piece fragments are realized. In addition, in the screening process, hydrogen is sprayed into the rotary screen 1, a plasma spray gun 9 can provide a plasma environment, and hydrogen reacts with fluorine to generate hydrogen fluoride (the chemical formula is HF) in the plasma environment, so that impurity fluorine can be effectively removed, the production cost is reduced, and the efficiency is improved; in addition, the embodiment also has the characteristics of simple process and the like.

In one implementation of this embodiment, the trommel 1 has a feeding end 101 and a collecting end 102, the feeding end 101 is used for allowing the pole piece fragments to be screened to enter, the collecting end 102 is used for collecting the screened current collector, and the feeding end 101 and the collecting end 102 are oppositely arranged along the axial direction of the trommel 1; the middle cylinder 103 of the rotary screen 1 between the feeding end 101 and the collecting end 102 is divided into a plurality of screen cylinders which are different in mesh number and are sequentially connected, a separation plate 4 is respectively sleeved between every two adjacent screen cylinders, and at least one separation plate 4 separates the space between the rotary screen 1 and the recycling bin 3 into a plurality of collecting spaces 5.

The middle cylinder 103 may be integrally formed with a plurality of screen cylinders, for example: the middle cylinder 103 is a complete cylinder, the middle cylinder 103 is divided into a plurality of areas, each area is provided with sieve holes with different sizes, and a plurality of sieve cylinders with different meshes and sequentially connected can be formed on the middle cylinder 103; the middle cylinder 103 which is integrally manufactured has the characteristics of convenient installation, simple manufacture and the like. Alternatively, the middle cylinder 103 may be formed by connecting a plurality of screen cylinders separately, for example: the method comprises the steps that a plurality of screen drums with different meshes are sequentially and coaxially connected in a welding mode or a bolt locking mode and the like to form a required middle drum 103, and when the plurality of screen drums are connected in a split mode, the middle drum 103 is manufactured; the middle cylinder 103 manufactured by connecting a plurality of screen cylinders in a split way can be adjusted in the number, arrangement sequence and mesh number of the screen cylinders according to requirements, and then can be combined into a plurality of types of middle cylinders 103 so as to meet the requirements of different classified screening.

As illustrated in fig. 1 to 3, one specific structure of the trommel 1 may be: trommel 1 mainly comprises a feed end 101, a collection end 102 and an intermediate cylinder 103. The feeding end 101 and the collecting end 102 are arranged at two axial ends of the middle cylinder 103, the feeding end 101 is arranged to be open, the feeding is convenient due to the open design, and the air inlet mechanism is also beneficial to blowing protective atmosphere into the rotary screen 1; the collecting end 102 is provided with a movable plate 104, the movable plate 104 is openably and closably sealed at the opening of the middle cylinder 103 close to the collecting end 102, and under the blowing action of the air inlet mechanism, the screened current collector can be gathered at the collecting end 102, and after screening is finished, the movable plate 104 can be opened to recycle the current collector; the middle cylinder 103 is divided into a plurality of screen cylinders, and the mesh number of each screen cylinder is different, preferably, the mesh number of the screen cylinders is sequentially reduced along the direction from the feeding end 101 to the collecting end 102, because the larger the mesh number of the screen cylinders is, the more the screen holes on a unit area are, the smaller the size of a single screen hole is, the smaller the size of powder with smaller volume can be screened out, namely, the screen cylinder closer to the feeding end 101 can screen out the powder, and the middle cylinder 103 is composed of a plurality of screen cylinders with different mesh numbers, so that the roller screen 1 can realize classified screening of the powder, and can sort the powder with different volume ranges.

By way of example, as shown in fig. 1, a specific structure of the collecting space 5 may be: the collecting space 5 is enclosed by the recycling bin 3, the rotary screen 1 and the partition plate 4. The collecting space 5 is mainly used for collecting powder in different volume ranges separated by screen drums with different mesh numbers, so that a separation plate 4 is required to be arranged between two adjacent screen drums with different mesh numbers, when the drum screen 1 needs to rotate during operation, the recovery drum 3 is in a fixed state, the separation plate 4 is fixedly arranged between the recovery drum 3 and the drum screen 1 in a mode of being fixedly connected with the recovery drum 3, specifically, the separation plate 4 is an annular plate, the outer wall of the separation plate 4 is fixedly connected with the inner wall of the recovery drum 3 in a mode of being fixedly connected with bolts or welded and the like, the separation plate 4 is sleeved on the drum screen 1, and a certain gap is reserved between the inner wall of the separation plate 4 and the outer wall of the drum screen 1 so as to prevent the separation plate 4 from interfering the rotation of the drum screen 1; preferably, the partition plate 4 is disposed coaxially with the recovery tank 3. The collecting space 5 is divided into a plurality of parts by the partition plate 4, preferably, as shown in fig. 1, three screen drums with different mesh numbers are designed in the rotary screen 1, and two partition plates 4 are required to partition the three collecting spaces 5, so that each screen drum corresponds to one collecting space 5, the above structural design can realize three-level separation of powder, and of course, a corresponding number of screen drums and collecting spaces 5 can be designed according to the needs to realize different levels of separation of powder, which is not limited herein. Each collecting space 5 is respectively provided with an openable powder collecting opening 301, the powder collecting openings 301 can be opened and used for taking out the powder collected in the corresponding collecting space 5 from the recycling bin 3, the powder collecting openings 301 can be specifically arranged at the bottom of the recycling bin 3, and the positions of the powder collecting openings 301 are designed to take the positions, suitable for collecting materials, in the recycling bin 3 into consideration.

As illustrated in fig. 1 and 4, one specific structure of the recycling bin 3 may be: the recycling bin 3 is in a bin body structure, the recycling bin 3 is covered outside the rotary screen 1, and a space environment which is beneficial to desorption can be provided for the rotary screen 1; during operation, the recycling bin 3 is in a fixed state, the rotary screen 1 needs to rotate, the first driving unit 2 is used for driving the rotary screen 1 to rotate, the first driving unit 2 is arranged outside the recycling bin 3, a speed reducing mechanism is further arranged between the first driving unit 2 and the recycling bin 3, and an output shaft 11 of the speed reducing mechanism can penetrate through the wall of the recycling bin 3 and can rotate relative to the recycling bin 3. In addition, considering that the trommel 1 needs to be installed inside the recovery tub 3 and the current collector needs to be taken out from the collection end 102 of the trommel 1, for convenience of operation, an openable and closable movable door 302 is provided at one end of the recovery tub 3 near the collection end 102, and after the movable door 302 is opened, the trommel 1 may be installed in the recovery tub 3, and the current collector may be taken out by opening the movable plate 104; of course, the design and use of the movable door 302 may also consider that the use of the collection space 5 adjacent to the movable door 302 cannot be affected after the movable door 302 is opened, so as to avoid affecting the recovery of the material in the collection space 5 adjacent to the movable door 302.

As shown in fig. 1, for example, one positional relationship of the recovery tank 3 and the trommel 1 may be: the axial direction of the trommel 1 is parallel to the horizontal plane, the axial direction of the recovery tank 3 is inclined to the horizontal plane, and the spatial position of the end of the recovery tank 3 near the feeding end 101 is higher than the spatial position of the end of the recovery tank 3 near the collecting end 102. Through above-mentioned structural design, can make the powder after the screening gather between the bottom of retrieving bucket 3 and division board 4 along the recovery bucket 3 that the slope set up, do benefit to the recovery of powder, in order to collect the powder of being convenient for, can also collect mouth 301 with the powder and design in the below that the powder gathered.

In an implementation of this embodiment, as shown in fig. 1, the air inlet mechanism is an air inlet pipe 6, the air inlet pipe 6 penetrates through the wall of the recycling bin 3, one end of the air inlet pipe 6 is connected with the air supply unit 7, and the other end is disposed towards the feeding end 101 of the trommel 1.

The air inlet pipe 6 is mainly used for blowing protective atmosphere, preferably inert gas, into the drum screen 1. During operation, protective atmosphere is blown to cause anaerobic environment in the rotary screen 1, and then hydrogen is blown (preferably, the hydrogen is blown into the rotary screen 1 from the air inlet pipe 6), and the hydrogen reacts with fluorine element to generate hydrogen fluoride in a plasma environment for removing fluorine.

Preferably, the temperature of the protective atmosphere sprayed by the air inlet mechanism is 200-600 ℃; the temperature of the protective atmosphere is set in consideration of the desorption temperature suitable for the powder to be separated from the current collector and the temperature suitable for fluorine removal.

In an implementation manner of this embodiment, as shown in fig. 1 and fig. 4, the air outlet mechanism is an air outlet pipe 8 communicated with the interior of the recycling bin 3, the air outlet pipe 8 is disposed at one end of the recycling bin 3 near the collecting end 102, and a filter screen 801 is disposed at an inlet of the air outlet pipe 8.

Wherein, outlet duct 8 mainly used discharges the gas in the recovery bucket 3, and outlet duct 8 cooperatees with intake pipe 6 and uses to guarantee that the atmospheric pressure in the recovery bucket 3 can not be too big and be in stable state. Preferably, the air outlet pipe 8 is externally connected to the movable door 302 of the recycling bin 3, and the inlet of the air outlet pipe 8 is communicated with the inside of the recycling bin 3. A filter screen 801 is arranged at the inlet of the air outlet pipe 8, and the filter screen 801 is mainly used for preventing desorbed powder from being discharged from the air outlet pipe 8 to cause waste; preferably, the filter screen 801 may be a metal mesh with a mesh, and the metal mesh may be fixed on the inner wall of the movable door 302 by bolts or glue, and covers the inlet of the air outlet pipe 8, and the metal mesh is mounted on the movable door 302, which has the characteristic of convenient disassembly and assembly.

In an implementation of the present embodiment, as shown in fig. 1, the plasma torch 9 is a rotary plasma torch, and the plasma torch 9 is rotatably disposed inside the trommel 1.

Wherein, the plasma spray gun 9 is driven to rotate by a second driving unit 10, the second driving unit 10 is arranged outside the recycling bin 3, and the plasma spray gun 9 is arranged at the output end of the second driving unit 10; because the plasma spray gun 9 and the rotary screen 1 all need to rotate during operation, in order to ensure that the plasma spray gun 9 and the rotary screen 1 can be coaxially arranged and do not interfere during operation, the plasma spray gun 9 can penetrate through an output shaft 11 of a speed reducing mechanism between the first driving unit 2 and the recovery barrel 3 from the outside of the recovery barrel 3, so that the plasma spray gun 9 stretches into the rotary screen 1, and the plasma spray gun 9 and the output shaft 11 of the speed reducing mechanism are coaxially arranged and can rotate relatively.

In order to increase the efficiency of use of the rotating plasma torch and to ensure that the plasma torch 9 is able to create a good plasma environment within the trommel 1, it is preferred that the plasma torch 9 is in operation in the opposite direction to the trommel 1; of course, the rotating plasma torch 9 may also rotate in the same direction as the trommel 1, but at different rotational speeds between the two, i.e. there is a rotational speed difference between the two.

Preferably, the air injection temperature of the plasma spray gun 9 is 80-400 ℃; the jet temperature of the plasma gun 9 is set taking into consideration the desorption temperature suitable for the powder to leave the current collector and the temperature suitable for the defluorination, while taking care to prevent the current collector from being burned.

In an implementation of this embodiment, the plasma spray gun 9 is coaxially arranged with the trommel 1, and the plasma spray gun 9 is provided with an agitation plate 12, and the agitation plate 12 rotates together with the plasma spray gun 9 and is used for striking pole piece fragments and scraping pole piece fragments blocked on the inner wall of the trommel 1.

By way of example, as shown in fig. 1, one specific configuration of the agitation plate 12 may be: the stirring plate 12 is an L-shaped plate, the L-shaped plate is divided into a long plate and a short plate which are vertically connected, wherein the end part of the short plate side of the stirring plate 12 is fixed on the peripheral wall of the plasma spray gun 9, the long plate of the stirring plate 12 is parallel to the axial direction of the trommel 1, a gap is reserved between the long plate and the inner wall of the trommel 1, and the gap is preferably 1-3 cm. When in operation, the rotary screen 1 rotates to drive the pole piece fragments in the rotary screen to move, the pole piece fragments roll on the inner wall of the rotary screen 1 under the action of centrifugal force for powder desorption, the stirring plate 12 rotates under the drive of the plasma spray gun 9, in the rotating process, the stirring plate 12 can accelerate powder desorption by striking the pole piece fragments, and the stirring plate 12 can scrape the pole piece fragments attached to the inner wall of the rotary screen 1, so that the pole piece fragments are prevented from blocking the rotary screen 1.

Preferably, the stirring plates 12 are plural, and the plural stirring plates 12 are distributed along the axial direction of the plasma torch 9 and/or the circumferential direction of the plasma torch 9; the design of the stirring plates 12 increases the action range of the stirring plates 12, and can cover the inner wall of the whole rotary screen 1 to strike pole piece fragments and clean pole piece fragments such as current collectors attached to the inner wall of the rotary screen 1, and improve the working efficiency of the stirring plates 12.

In an implementation manner of this embodiment, as shown in fig. 1, a multifunctional furnace device applied to polar powder desorption further includes a crusher 13 for crushing a polar plate into polar plate fragments, an output end of the crusher 13 conveys the polar plate fragments to the trommel 1 through a feed pipe 14, the feed pipe 14 penetrates through a barrel wall of the recycling bin 3 and extends into a feed end 101 of the trommel 1, and the polar plate fragments are blown from the feed end 101 to a collection end 102 through an air inlet mechanism.

The crusher 13 belongs to the prior art, and the specific structure and the specific process of crushing the pole piece into pole piece fragments are not described herein. The process of battery recovery can be perfected by adding the crusher 13, so that the multifunctional furnace device has a pole piece crushing function, and the integrated process of pole piece crushing, powder desorption and recovery can be realized in one multifunctional furnace device. It should be noted that, after the broken pole piece fragments are conveyed to the drum screen 1 by the crusher 13, the pole piece fragments also need to be matched with an air inlet mechanism for use, and the pole piece fragments are blown into the drum screen 1 by the air inlet mechanism.

In an implementation of the present embodiment, as shown in fig. 1, a multifunctional furnace apparatus for polar powder desorption further includes a heating rod 15, where the heating rod 15 is disposed between the trommel 1 and the recovery tank 3 and is used for heating the trommel 1.

Specifically, the heating rod 15 is fixed between the trommel 1 and the recovery tank 3 by a connecting rod; alternatively, the heating rod 15 is hung on the inner wall of the recovery tank 3; alternatively, the heating rod 15 is embedded on the inner wall of the recovery tub 3.

The roller screen 1 is heated, so that fragments of the pole pieces attached to the inner wall of the roller screen 1 are helped to separate from the inner wall of the roller screen 1; in addition, the drum screen 1 is heated to a suitable temperature to facilitate desorption of the powder. The heating temperature of the heating rod 15 is set mainly considering the desorption temperature suitable for the powder to be detached from the current collector and the temperature suitable for the fluorine removal, while taking care to prevent the current collector from being burned.

Preferably, the heating rods 15 are arranged in parallel with the axial direction of the trommel 1, and the heating rods 15 are arranged in a plurality and distributed around the circumference of the trommel 1; through the structural design, the rotary screen 1 can be heated more uniformly and the heating rate is faster, thereby being beneficial to improving the working efficiency.

In an implementation manner of this embodiment, as shown in fig. 1, a multifunctional furnace device applied to polar powder desorption further includes a temperature sensor 16, where the temperature sensor 16 is disposed inside the trommel 1 and is used for detecting the internal temperature of the trommel 1 and feeding back to the system unit, so as to realize regulation and control of the internal temperature of the trommel 1.

The system unit can control the temperature of the protective atmosphere sprayed by the air inlet mechanism, the air injection temperature of the plasma spray gun 9 and the temperature of the heating rod 15 through detection feedback of the temperature sensor 16 so as to adjust the internal temperature of the recovery barrel 3 and the internal temperature of the rotary screen 1, so that the system unit can be matched with corresponding temperature environments according to different working states in the recovery barrel 3, for example, a temperature environment suitable for powder desorption or a temperature environment suitable for fluorine removal can be created.

The embodiment provides a multifunctional furnace device applied to polar powder desorption, which is provided with a crusher 13, an air inlet mechanism, a plasma spray gun 9, a heating rod 15, a drum screen 1, a recycling bin 3 and other mechanisms, can realize the functions of pole piece crushing, desorption heating, powder multistage screening and the like, and has the characteristics of simple process, high efficiency and the like. On the basis, more importantly, the embodiment can also utilize the air inlet mechanism to blow in hydrogen and provide a plasma environment by the plasma spray gun 9, so that impurity fluorine can be removed in the powder desorption process, the production cost can be reduced, and the efficiency can be improved.

While the fundamental and principal features of the utility model and advantages of the utility model have been shown and described, it will be apparent to those skilled in the art that the utility model is not limited to the details of the foregoing exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (17)

1. Be applied to multi-functional stove device of utmost point powder desorption, characterized by comprising:

the rotary screen is used for screening pole piece fragments and is rotatably arranged in the recycling bin;

the recycling bin is used for collecting powder sieved by the drum sieve;

the air inlet mechanism is at least used for blowing protective atmosphere into the drum screen;

the air outlet mechanism is used for exhausting the air in the recycling bin; and

the impurity removing mechanism is used for removing impurities at least when the pole piece fragments are screened by the drum screen;

wherein the impurity comprises fluorine.

2. The multifunctional furnace device for polar powder desorption according to claim 1, wherein the rotary screen is provided with a feeding end and a collecting end, wherein the feeding end is used for allowing fragments of the polar plate to be screened to enter, the collecting end is used for collecting a screened current collector, and the feeding end and the collecting end are oppositely arranged along the axial direction of the rotary screen;

the rotary screen is located the feed end with the intermediate barrel divide into mesh different and a plurality of screen drums that connect gradually between the collection end, and every adjacent two between the screen drum the overcoat has a division board respectively, at least one the division board will the rotary screen with space separation between the recovery bucket is a plurality of collection spaces.

3. The multifunctional furnace device for polar powder desorption according to claim 2, wherein the feeding end is arranged to be open, the collecting end is provided with a movable plate, and the movable plate is openably and closably closed at the opening of the middle cylinder body close to the collecting end.

4. A multi-functional furnace apparatus for polar powder desorption according to claim 2, wherein the mesh numbers of the plurality of screen cylinders decrease in sequence in the direction from the feed end to the collection end.

5. A multi-functional furnace apparatus for polar powder desorption according to claim 2, wherein each of the collecting spaces is provided with a openable powder collecting port.

6. The multifunctional furnace device for polar powder desorption according to claim 2, wherein the axial direction of the rotary screen is arranged in parallel with respect to a horizontal plane, the axial direction of the recovery barrel is arranged obliquely with respect to the horizontal plane, and the spatial position of the end of the recovery barrel close to the feeding end is higher than the spatial position of the end of the recovery barrel close to the collecting end.

7. The multifunctional furnace device for polar powder desorption according to claim 3, wherein the air inlet mechanism is an air inlet pipe, the air inlet pipe penetrates through the barrel wall of the recycling barrel, one end of the air inlet pipe is connected with the air supply unit, and the other end of the air inlet pipe is arranged towards the feeding end of the rotary screen.

8. The multifunctional furnace device for polar powder desorption according to claim 1 or 7, wherein the temperature of the protective atmosphere sprayed by the air inlet mechanism is 200-600 ℃.

9. The multifunctional furnace device for polar powder desorption according to claim 2 or 7, wherein the air outlet mechanism is an air outlet pipe communicated with the interior of the recovery barrel, the air outlet pipe is arranged at one end of the recovery barrel close to the collecting end, and a filter screen is arranged at the inlet of the air outlet pipe.

10. The multifunctional furnace device for polar powder desorption according to claim 1, wherein the impurity removing mechanism comprises:

hydrogen for chemically reacting with the fluorine to remove the fluorine; and

a plasma torch that provides a plasma environment for at least a chemical reaction between the hydrogen gas and the fluorine.

11. The multifunctional furnace device for polar powder desorption according to claim 10, wherein the plasma torch is a rotary plasma torch, and the plasma torch is rotatably arranged inside the trommel.

12. The multifunctional furnace device for polar powder desorption according to claim 11, wherein the plasma spray gun is coaxially arranged with the trommel, and an agitating plate is arranged on the plasma spray gun, and the agitating plate rotates together with the plasma spray gun and is used for striking the polar piece fragments and scraping the polar piece fragments blocked on the inner wall of the trommel.

13. The multi-functional furnace apparatus for polar powder desorption according to claim 12, wherein the stirring plates are plural, and the plural stirring plates are distributed along the axial direction of the plasma torch and/or the circumferential direction of the plasma torch.

14. A multifunctional furnace apparatus for polar powder desorption according to any one of claims 10 to 13, wherein the gas injection temperature of the plasma spray gun is 80 to 400 ℃.

15. A multi-function furnace apparatus for polar powder desorption according to any one of claims 2-6 further comprising a crusher for crushing pole pieces into said pole piece pieces, an output end of said crusher delivering said pole piece pieces to said trommel through a feed tube extending through a wall of said recovery barrel and into a feed end of said trommel, said pole piece pieces being blown from said feed end to said collection end through said air intake mechanism.

16. The multifunctional furnace device for polar powder desorption according to any one of claims 1 to 6, further comprising a heating rod disposed between the trommel and the recovery tank for heating the trommel.

17. The multifunctional furnace device for polar powder desorption according to claim 16, further comprising a temperature sensor, wherein the temperature sensor is arranged inside the rotary screen and is used for detecting the internal temperature of the rotary screen and feeding back to a system unit so as to realize regulation and control of the internal temperature of the rotary screen.