CN219785483U

CN219785483U - Coating oven

Info

Publication number: CN219785483U
Application number: CN202321317296.0U
Authority: CN
Inventors: 罗剑威; 王罚生; 林玉春
Original assignee: Zhonghongke Innovation Energy Technology Zhejiang Co ltd
Current assignee: Zhonghongke Innovation Energy Technology Zhejiang Co ltd
Priority date: 2023-05-25
Filing date: 2023-05-25
Publication date: 2023-10-03
Anticipated expiration: 2033-05-25

Abstract

The utility model provides a coating oven, which relates to the technical field of ovens and comprises an oven body; two air chambers and a feeding cavity are arranged in the oven body; the feeding cavity is provided with a feeding hole and a discharging hole for leading in and leading out the pole piece; the oven body is also provided with at least two air inlets, each air chamber is communicated with one air inlet so as to realize air inlet of the air chamber, and the size range of the opening of the air inlet is 4-10mm; the oven body is also provided with an air outlet; a plurality of air knives are arranged on one side of each air chamber close to the feeding cavity, a flow equalizing sieve plate is arranged on one side of each air knife close to the air chamber, and a plurality of flow equalizing sieve holes are formed in the flow equalizing sieve plate; the air in the air chamber enters the air knife through the flow equalizing sieve holes and is guided to the feeding cavity through the air knife outlet. Through setting up the trompil size scope of air intake and a plurality of sieve meshes that flow equalizes on 4-10mm and the sieve that flow equalizes, improve the circulation amount of wind of coating oven, increase the amount of wind and keep inside temperature's uniformity.

Description

Coating oven

Technical Field

The utility model relates to the technical field of ovens, in particular to a coating oven.

Background

The coating process is a key process in the lithium battery forming production process, and the baking forming is a key node in the coating process; abnormal conditions such as powder falling, scorching, unqualified compacted surface density, inconsistent solvent volatilization, inadequate adhesive force between the slurry and the foil, and the like of the coated pole piece are directly related to the baking temperature uniformity.

The prior art has the problems of insufficient circulation air quantity, small air inlet and uneven baking temperature, so a new coating oven is needed, which can improve the circulation air quantity of the coating oven, increase the air inlet and keep the consistency of the internal temperature.

Disclosure of Invention

In view of this, the embodiments of the present disclosure provide a coating oven capable of increasing the circulation air volume of the coating oven, increasing the air intake volume, and maintaining the uniformity of the internal temperature.

The embodiment of the specification provides the following technical scheme:

the embodiment of the specification provides a coating oven, which comprises an oven body;

two air chambers and a feeding cavity positioned between the two air chambers are arranged in the oven body;

the two ends of the feeding cavity are respectively provided with a feeding hole and a discharging hole for leading in and leading out the pole piece;

the oven body is also provided with at least two air inlets, each air chamber is at least communicated with one air inlet so as to realize air inlet of the air chamber, and the size range of an opening of the air inlet is 4-10mm;

the oven body is also provided with an air outlet communicated with the feeding cavity so as to discharge the gas in the feeding cavity;

a plurality of air knives are arranged on one side of each air chamber close to the feeding cavity, a flow equalizing sieve plate is arranged on one side of each air knife close to the air chamber, and a plurality of flow equalizing sieve holes are formed in the flow equalizing sieve plate;

and the air in the air chamber enters the air knife through the flow equalizing sieve holes and is guided to the feeding cavity through the air knife outlet.

Through above-mentioned technical scheme, set up the trompil size scope of air intake at 4-10mm, can guarantee that every plenum all has comparatively sufficient intake, moreover, through a plurality of sieve meshes that flow equalizes on the sieve that flow equalizes organize and flow equalizes the gas in the plenum for the gas in the plenum is even divide into a plurality of air knifes of flowing into every continuous, rethread air knife exports gas to the feed chamber, makes the gas distribution in the feed chamber comparatively even, improves the circulation amount of wind in the feed chamber, makes the temperature in the feed chamber more even, thereby guarantees the temperature uniformity of pole piece in the baking process in the oven.

Preferably, the sizes of a plurality of flow equalizing sieve holes on each flow equalizing sieve plate are uniform, and a plurality of flow equalizing sieve holes are uniformly distributed on the flow equalizing sieve plate.

Through the technical scheme, the uniform distribution and the uniform size of the flow equalizing sieve holes on the flow equalizing sieve plate are set, so that the gas passing through the flow equalizing sieve plate is more uniform and enters the air knife, the uniformity of air outlet at the outlet of the air knife is further ensured, and the hot air entering the feeding cavity is more uniform.

Preferably, the width of the slit at the outlet of each air knife is between 2 and 5mm.

Through the technical scheme, through analysis of the flow field characteristics of the air knife, when the widths of the slits are different, the gas speed distribution trend in the air knife is consistent, but the gas speed at the outlet of the air knife is changed greatly, the smaller the width of the slits is, the faster the gas flows through the outlet of the air knife, but the smaller the speed attenuation of the gas flow after passing through the flow equalizing sieve plate is along with the gradual increase of the width of the slits, the more sufficient flow of the gas in the air knife is realized, the width of the slits at the outlet of the air knife is set between 2mm and 5mm, the larger gas flow rate at the outlet of the air knife can be ensured, and the more sufficient gas flow inside the air knife can be ensured, so that the hot air entering the feeding cavity through the air knife is more uniform and the flow rate is faster.

Preferably, the air knives on one side of the feeding cavity and the air knives on the other side are staggered one by one.

Through the technical scheme, the air knives on the two sides of the feeding cavity are staggered one by one, so that after hot air blows to the pole pieces, the pole pieces keep a small-amplitude sine air-float state, hot air on the surfaces of the pole pieces can flow more uniformly, and the surfaces of the pole pieces are heated more uniformly.

Preferably, the two air chambers are respectively arranged at the upper side and the lower side of the feeding cavity.

Preferably, the air knife is arranged along the vertical direction, and the outlet of the air knife faces the feeding cavity vertically.

Preferably, the size of the opening of the air outlet is in the range of 4-10mm.

Through the technical scheme, the size range of the exhaust outlet is 4-10mm, so that the moist air in the feeding cavity can be discharged in time, and the influence on the temperature uniformity of hot air is avoided.

Preferably, the air supply height of the air chamber is 15mm.

Preferably, the opening size of the air inlet is 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm.

Preferably, the width of the slit at the outlet of the air knife is 2mm, 3mm, 4mm or 5mm.

Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least:

1. by setting the size range of the opening of the air inlet to be 4-10mm, the air inlet chamber can be ensured to have sufficient air inlet quantity;

2. the air in the air chamber is organized and equalized through the plurality of equalizing holes on the equalizing sieve plate, so that the air in the air chamber is uniformly divided into a plurality of air flows into each connected air knife, the air is led out to the feeding cavity through the air knives, the air in the feeding cavity is uniformly distributed, the circulating air quantity in the feeding cavity is improved, the temperature in the feeding cavity is uniform, and the temperature consistency of the pole piece in the baking process in the baking oven is ensured.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a coating oven according to the present utility model;

fig. 2 is a schematic structural view of an air knife in the present utility model.

Reference numerals: 1. an oven body; 2. an air chamber; 3. a feed chamber; 4. a feed inlet; 5. a discharge port; 6. an air inlet; 7. an air outlet; 8. an air knife; 9. a flow equalizing sieve plate; 10. and (5) equalizing the flow of the sieve holes.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that various aspects of the embodiments are described below within the scope of the following claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present disclosure, one skilled in the art will appreciate that one aspect described herein may be implemented independently of any other aspect, and that two or more of these aspects may be combined in various ways. For example, apparatus may be implemented and/or methods practiced using any number and aspects set forth herein. In addition, such apparatus may be implemented and/or such methods practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.

It should also be noted that the illustrations provided in the following embodiments merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complicated.

In addition, in the following description, specific details are provided in order to provide a thorough understanding of the examples. However, it will be understood by those skilled in the art that the present utility model may be practiced without these specific details.

The following describes the technical scheme provided by each embodiment of the present utility model with reference to the accompanying drawings.

As shown in fig. 1 and 2, embodiments of the present disclosure provide a coating oven including an oven body.

Two air chambers 2 and a feeding cavity 3 positioned between the two air chambers 2 are arranged in the oven body 1. Wherein the two air chambers 2 are vertically symmetrically distributed in the wind direction body.

Two ends of the feeding cavity 3 are respectively provided with a feeding hole 4 and a discharging hole 5 along the length direction of the oven body 1 for guiding in and guiding out the pole pieces.

The side wall of the oven body 1 is provided with two air inlets 6, and the two air inlets 6 are respectively communicated with the air chamber 2 positioned at the upper part of the oven body 1 and the air chamber 2 positioned at the lower part of the oven body 1. The air inlets of the two air chambers 2 are respectively realized through the two air inlets 6.

Further, the opening size of the air inlet 6 is in the range of 4-10mm.

Specifically, the opening size of the air inlet 6 may be 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm. By setting the opening size of the air inlet 6, it is possible to ensure that both air chambers 2 can have sufficient air intake.

The side wall of the oven body 1 is also provided with an air outlet 7, and the air outlet 7 is communicated with the inside of the feeding cavity 3 so as to discharge the air in the feeding cavity 3.

Further, the opening size of the air outlet 7 is in the range of 4-10mm.

Specifically, the opening size of the air outlet 7 may be 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm. Through setting up the opening size of air exit 7, can make the moist air in the feeding chamber 3 in time discharge, avoid influencing the temperature homogeneity of hot-blast.

The two air chambers 2 in the oven body 1 are an upper air chamber and a lower air chamber respectively. A plurality of air knives 8 are arranged in the lower area of the upper air chamber, and a plurality of air knives 8 are arranged in the upper area of the lower air chamber. The air knives 8 of the upper air chamber and the air knives 8 of the lower air chamber are staggered one by one along the length direction of the oven body 1.

The air knives 8 of the upper air chamber are all arranged along the vertical direction, and the air knife openings of the air knives 8 of the upper air chamber are all arranged along the vertical direction towards the feeding cavity 3.

The air knives 8 of the lower air chamber are all arranged along the vertical direction, and the air knife openings of the air knives 8 of the lower air chamber are all arranged along the vertical direction towards the feeding cavity 3.

One side of any air knife 8 in the upper air chamber and the lower air chamber, which is away from the feeding cavity 3, is provided with a flow equalizing sieve plate 9, and a plurality of flow equalizing sieve holes 10 are uniformly arranged on the flow equalizing sieve plate 9. The sizes of a plurality of flow equalizing sieve holes 10 on each flow equalizing sieve plate 9 are kept identical. When the gas in the air chamber 2 passes through the plurality of flow equalizing sieve holes 10 on the flow equalizing sieve plate 9, the gas can be organized and equalized through the plurality of flow equalizing sieve holes 10, uniform gas flow is guided into the air knife 8, and then is guided to the feeding cavity 3 through the air knife opening, so that the pole pieces in the feeding cavity 3 are baked.

The structural design that a plurality of air knives 8 of the upper air chamber and a plurality of air knives 8 of the lower air chamber are staggered one by one can enable the surface of the pole piece to be in a sine air floatation state when the pole piece is acted by gas from an air knife opening, hot air of the air knife opening can flow back and forth between a wave crest and a wave trough, and the surface of the pole piece is heated more uniformly.

Furthermore, the arrangement of the flow equalizing sieve plate 9 can rectify the originally disordered gas introduced into the air chambers 2 into orderly and uniform gas, so that the gas can uniformly flow to the feeding cavity 3 from a plurality of air knife openings in the two air chambers 2, the circulating air quantity in the feeding cavity 3 is improved, the temperature in the feeding cavity 3 is uniformly distributed, and the consistency of the baking temperature of the pole pieces in the oven is further ensured.

The air supply height of each air chamber 2 is guaranteed to be 15mm, and the slit width of the outlet of each air knife 8 is 2-5 mm.

In other embodiments, the air supply height of the air chamber 2 may be 20mm or other values, which are not limited herein.

Further, the width of the slit at the outlet of the air knife 8 is 2mm, 3mm, 4mm or 5mm. Through analysis of the flow field characteristics of the air knife 8, when the widths of the slits are different, the gas speed distribution trend in the air knife 8 is consistent, but the gas speed at the outlet of the air knife 8 is changed greatly, the smaller the width of the slits is, the faster the gas flows through the outlet of the air knife 8, but the speed attenuation of the gas flow after passing through the flow equalizing sieve plate 9 is gradually reduced along with the gradual increase of the widths of the slits, and the gas flows in the air knife 8 more fully, so that the width of the slits at the outlet of the air knife 8 is set between 2mm and 5mm, the larger gas flow rate at the outlet of the air knife 8 can be ensured, and the more sufficient gas flow inside the air knife 8 can be ensured, so that the hot air entering the feeding cavity 3 through the air knife 8 is more uniform and the flow rate is faster.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment focuses on differences from other embodiments.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. A coating oven, characterized by comprising an oven body (1);

two air chambers (2) and a feeding cavity (3) positioned between the two air chambers (2) are arranged in the oven body (1);

two ends of the feeding cavity (3) are respectively provided with a feeding hole (4) and a discharging hole (5) for guiding in and guiding out the pole piece;

the oven body (1) is also provided with at least two air inlets (6), each air chamber (2) is at least communicated with one air inlet (6) so as to realize air inlet of the air chamber (2), and the size range of an opening of the air inlet (6) is 4-10mm;

the oven body (1) is also provided with an air outlet (7) communicated with the feeding cavity (3) for discharging the air in the feeding cavity (3);

a plurality of air knives (8) are arranged on one side, close to the feeding cavity (3), of each air chamber (2), a flow equalizing screen plate (9) is arranged on one side, close to the air chambers (2), of each air knife (8), and a plurality of flow equalizing screen holes (10) are formed in the flow equalizing screen plate (9);

the air in the air chamber (2) enters the air knife (8) through the flow equalizing sieve holes (10) and is guided to the feeding cavity (3) through the opening of the air knife.

2. A coating oven according to claim 1, characterized in that the size of several flow equalizing screen holes (10) on each flow equalizing screen plate (9) is uniform, and that several flow equalizing screen holes (10) are uniformly distributed on the flow equalizing screen plate (9).

3. A coating oven according to claim 1, wherein the slot width of each air knife opening is between 2-5 mm.

4. The coating oven according to claim 1, characterized in that the air knives (8) on one side of the feed chamber (3) are arranged in a one-to-one staggered manner with the air knives (8) on the other side.

5. A coating oven according to claim 4, characterized in that two of the air chambers (2) are arranged on the upper and lower sides of the feed chamber (3), respectively.

6. A coating oven according to claim 5, characterized in that the air knife (8) is arranged in a vertical direction and the air knife opening is directed vertically towards the feed chamber (3).

7. A coating oven according to any one of claims 1-6, characterized in, that the opening size of the exhaust opening (7) is in the range of 4-10mm.

8. A coating oven according to any one of claims 1-6, characterized in, that the air supply height of the air chamber (2) is 15mm.

9. A coating oven according to any one of claims 1-6, characterized in, that the opening size of the air inlet (6) is 4mm, 5mm, 6mm, 7mm, 8mm, 9mm or 10mm.

10. A coating oven according to claim 3, characterized in that the slit width of the air knife opening is 2mm, 3mm, 4mm or 5mm.