CN220633871U

CN220633871U - Cladding device and cladding machine

Info

Publication number: CN220633871U
Application number: CN202321541791.XU
Authority: CN
Inventors: 杜保东; 朱鑫亮; 金旭东; 徐勇程
Original assignee: Shenzhen Shangshui Intelligent Co ltd
Current assignee: Shenzhen Shangshui Intelligent Co ltd
Priority date: 2023-06-15
Filing date: 2023-06-15
Publication date: 2024-03-22
Anticipated expiration: 2033-06-15

Abstract

The application provides a cladding device and cladding machine, cladding device includes the cladding jar, rotating assembly, seal assembly and gas tightness detection subassembly, the cladding jar is including being used for acceping the accommodation space of waiting to stir the material, rotating assembly wears to establish the diapire of cladding jar and rotates for the diapire, rotating assembly and diapire form the at least partial airtight passageway of intercommunication accommodation space, seal assembly is located the outside of diapire, seal assembly includes annular body and two at least seal structures, the periphery side of rotating assembly is located to the annular body, seal structure seals between annular body and rotating assembly, at least one of two at least seal structures is used for sealed airtight passageway, annular body, enclose between rotating assembly and the adjacent two seal structures and form a seal chamber, gas tightness detection assembly intercommunication seal chamber for to the seal intracavity air feed and detect seal chamber internal gas tightness. The airtight detection component can timely remind a user to replace when the sealing structure is damaged.

Description

Cladding device and cladding machine

Technical Field

The application relates to the technical field of coating of battery electrode materials, in particular to a coating device and a coating machine.

Background

The electrode materials of batteries are often coated during the manufacturing process to improve the conductivity, stability and other properties of the battery electrodes.

The battery electrode material is coated through the coating machine, the coating machine needs to stir the battery electrode material through the stirring assembly to improve the coating effect, the stirring assembly needs to rotate, a gap exists between the rotating shaft of the stirring assembly and the bottom wall of the coating tank, the gap is sealed by the sealing assembly, and the sealing assembly in the related technology is easy to damage and cannot be detected and replaced in time.

Disclosure of Invention

The purpose of this application is to provide cladding device and cladding machine to solve the sealing component among the correlation technique and take place to damage easily and can't in time detect and change technical problem.

In a first aspect, the present application provides a cladding apparatus comprising:

the coating tank comprises an accommodating space for accommodating the materials to be stirred;

the rotating assembly penetrates through the bottom wall of the coating tank and rotates relative to the bottom wall, and at least part of airtight channels are formed between the rotating assembly and the bottom wall and communicated with the accommodating space;

the sealing assembly is positioned on one side of the bottom wall, which is away from the accommodating space, and comprises an annular body and at least two sealing structures, wherein the annular body is arranged on the outer peripheral side of the rotating assembly, each sealing structure is sealed between the annular body and the rotating assembly, at least one of the at least two sealing structures is used for sealing the airtight channel, and a sealing cavity is formed by enclosing the annular body, the rotating assembly and the adjacent two sealing structures; and

And the air tightness detection assembly is communicated with the sealing cavity and is used for supplying air into the sealing cavity and detecting the air tightness in the sealing cavity.

In the cladding device that this application provided, rotating assembly and cladding jar's diapire forms the airtight passageway of at least partial intercommunication accommodation space, and at least one of two seal structure is used for sealed airtight passageway in the seal assembly, encloses between annular body, rotating assembly and the adjacent two seal structure and closes and form a seal chamber, and the gas tightness detection subassembly is used for supplying air to the seal chamber and detecting seal intracavity gas tightness. The airtight detection component can judge whether the sealing structure is damaged by detecting the air pressure change in the sealing cavity, and can prompt a user to replace the sealing structure in time when the sealing structure is damaged, so that the working efficiency of the cladding device is improved.

The air tightness detection assembly comprises an air supply tank and an air pressure detector, wherein the air supply tank is used for supplying air into the sealing cavity, the air pressure detector is arranged in the air supply tank, and the air pressure detector is used for detecting air pressure in the air supply tank; when the seal chamber is in communication with the space outside the seal chamber, the air pressure detector detects a change in air pressure in the air supply tank.

The sealing structures comprise a first sealing structure and a second sealing structure, the second sealing structure is arranged on one side, away from the bottom wall, of the first sealing structure, and the first sealing structure, the bottom wall, the annular body and the rotating assembly are enclosed to form the airtight channel;

the cladding device further comprises an air inlet component which is positioned at one side of the bottom wall, which is away from the accommodating space, and the air inlet component is communicated with the airtight channel and is used for introducing air into the accommodating space through the airtight channel.

One end of the sealing structure is fixedly connected with the annular body, and the other end of the sealing structure abuts against the rotating assembly.

The air pressure in the airtight channel is larger than the air pressure in the sealing cavity, and one end of the first sealing structure, which is close to the rotating assembly, extends towards the direction gradually close to the bottom wall and is abutted against the outer peripheral surface of the rotating assembly;

or, the air pressure in the airtight channel is smaller than the air pressure in the sealing cavity, and one end of the first sealing structure, which is close to the rotating assembly, extends towards a direction gradually away from the bottom wall and is abutted to the outer peripheral surface of the rotating assembly.

The air pressure in the sealing cavity is larger than the air pressure at one side of the second sealing structure, which is away from the sealing cavity, and one end of the second sealing structure, which is close to the rotating assembly, extends towards the direction gradually close to the bottom wall and is abutted to the outer peripheral surface of the rotating assembly;

or, the air pressure in the sealing cavity is smaller than the air pressure at one side of the second sealing structure, which is away from the sealing cavity, and one end of the second sealing structure, which is close to the rotating assembly, extends towards the direction gradually close to the bottom wall and is abutted to the outer peripheral surface of the rotating assembly.

The annular body is provided with at least one air supply through hole communicated with the sealing cavity, the air pressure detection assembly comprises an air supply pipe communicated with the air supply tank, the air supply pipe is communicated with the air supply through hole, and air in the air supply tank enters the sealing cavity through the air supply pipe and the air supply through hole.

The number of the air supply through holes is two, and the connecting line direction of the two air supply through holes is the radial direction of the annular body.

The rotating assembly comprises a rotating shaft and a bushing, the bushing is sleeved on the outer peripheral side of the rotating shaft, and the sealing structure abuts against the bushing.

In a second aspect, the present application provides a cladding machine, including drive arrangement, air inlet unit and cladding unit, drive arrangement connects rotating assembly is used for the drive rotating assembly rotates, air inlet unit intercommunication air inlet assembly is used for the orientation air inlet assembly admits air.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 application, 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 cross-sectional view of a cladding apparatus according to an embodiment of the present application;

fig. 2 is a schematic cross-sectional view of a cladding apparatus according to the second embodiment of the present application;

FIG. 3 is an enlarged schematic view of a portion of the structure of FIG. 2;

FIG. 4 is a schematic view of a seal structure provided in accordance with an embodiment of the present application;

FIG. 5 is a second schematic structural view of a sealing structure according to an embodiment of the present disclosure;

fig. 6 is a schematic structural view of a sealing structure according to an embodiment of the present application.

Description of the reference numerals:

the packing device comprises a packing device-100, a packing tank-1, a bottom wall-11, a containing space-14, a rotating component-2, a rotating shaft-21, a bushing-22, a sealing component-30, an annular body-31, a sealing structure-32, a first sealing structure-321, a second sealing structure-322, an air supply through hole-33, an air inlet through hole-34, an air supply pipe-35, an air tightness detection component-4, an air inlet component-5, an air inlet pipe-51, an air tightness channel-6 and a sealing cavity-7.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without undue burden, are within the scope of the present application.

Reference herein to "an embodiment" or "an implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment or implementation may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the present specification, for convenience, words such as "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, which indicate an azimuth or a positional relationship, are used to describe positional relationships of constituent elements with reference to the drawings, only for convenience of description and simplification of the description, and do not indicate or imply that the apparatus or elements referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus are not to be construed as limiting the present disclosure. The positional relationship of the constituent elements is appropriately changed according to the direction of the described constituent elements. Therefore, the present utility model is not limited to the words described in the specification, and may be appropriately replaced according to circumstances.

In this specification, the terms "mounted," "connected," and "connected" are to be construed broadly, unless explicitly stated or limited otherwise. For example, it may be a fixed connection, a removable connection, or an integral connection; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intermediate members, or may be in communication with the interior of two elements. The meaning of the above terms in the present disclosure can be understood by one of ordinary skill in the art as appropriate.

Referring to fig. 1, 2 and 3, a wrapping device 100 is provided to solve the technical problems that the sealing assembly 30 in the related art is easily damaged and cannot be detected and replaced in time.

The coating device 100 comprises a coating tank 1, a rotating assembly 2, a sealing assembly 30 and an air tightness detection assembly 4. The coating tank 1 comprises a containing space 14 for containing the materials to be stirred.

The shape of the coating tank 1 includes, but is not limited to, a cylindrical shape, a rectangular parallelepiped shape, or other shapes, and the shape of the coating tank 1 is exemplified herein as a cylindrical shape, and should not be construed as limiting the present application.

Optionally, the material to be stirred includes but is not limited to positive and negative electrode raw materials of a battery, and the form of the material to be stirred includes but is not limited to solid, liquid or solid-liquid mixed state.

The rotating assembly 2 penetrates through the bottom wall 11 of the coating tank 1, the rotating assembly 2 rotates relative to the bottom wall 11, the rotating assembly 2 and the bottom wall 11 form at least a part of airtight channels 6, and the airtight channels 6 are communicated with the accommodating space 14.

It can be appreciated that in this embodiment, the rotating assembly 2 and the bottom wall 11 form at least part of the airtight passage 6 communicating with the accommodating space 14, and the airtight passage 6 has gas therein, and the gas is input into the airtight passage 6, and the gas can flow into the accommodating space 14, so that the material to be stirred is difficult to enter into the airtight passage 6 to block the rotation of the rotating assembly 2.

The sealing assembly 30 is located at a side of the bottom wall 11 facing away from the accommodating space 14, the sealing assembly 30 includes an annular body 31 and at least two sealing structures 32, the annular body 31 is disposed at an outer peripheral side of the rotating assembly 2, each sealing structure 32 is sealed between the annular body 31 and the rotating assembly 2, at least one of the at least two sealing structures 32 is used for sealing the airtight channel 6, and a sealing cavity 7 is formed by enclosing the annular body 31, the rotating assembly 2 and the adjacent two sealing structures 32.

The seal assembly 30 includes an annular body 31 and at least two seal structures 32, alternatively, the number of seal structures 32 may be 2, or 3, or 4 or more, and the present application is exemplified with the number of seal structures 32 being 2, and should not be construed as limiting the present application. Specifically, the two sealing structures 32 include a first sealing structure 321 and a second sealing structure 322 that are sequentially disposed along the axial direction of the rotating assembly 2, and the first sealing structure 321 is close to the coating tank 1 relative to the second sealing structure 322.

At least one of the at least two sealing structures 32 is used for sealing the airtight passage 6, it should be noted that the sealing structure 32 closest to the coated tank 1 of the at least two sealing structures 32 is used for sealing the airtight passage 6. Specifically, in the present embodiment, the first sealing structure 321 is used to seal the airtight passage 6. The first sealing structure 321, the second sealing structure 322, the annular body 31 and the rotating assembly 2 enclose to form the sealing cavity 7.

The two sealing structures 32 are sequentially arranged, the first sealing structure 321 is used for sealing the airtight channel 6, and the second sealing structure 322 can further enhance the sealing effect of the airtight channel 6. The second sealing structure 322 is also used to seal the airtight passage 6 when the first sealing structure 321 is damaged, further improving the sealing effect of the sealing assembly 30.

Further, in one embodiment, the air pressure in the sealing cavity 7 is higher than the air pressure in the airtight passage 6, so that the material to be stirred in the airtight passage 6 is more difficult to enter the sealing cavity 7 or the lower space of the sealing cavity 7, and the sealing effect of the sealing assembly 30 is further enhanced.

The air tightness detection component 4 is communicated with the sealing cavity 7 and is used for supplying air into the sealing cavity 7 and detecting air tightness in the sealing cavity 7.

The air tightness detection assembly 4 is used for supplying air into the sealing cavity 7 and detecting air tightness in the sealing cavity 7. Specifically, when the first sealing structure 321 and the second sealing structure 322 are not damaged and the sealing performance is good, the air tightness detecting assembly 4 supplies air into the sealing cavity 7, and the air pressure in the sealing cavity 7 tends to be stable; when the first sealing structure 321 or the second sealing structure 322 is damaged, the air tightness detection assembly 4 supplies air into the sealing cavity 7, the air in the sealing cavity 7 leaks to the air tightness channel 6 or the external environment, the air pressure in the sealing cavity 7 changes, and the air tightness detection assembly can be used for detecting the air pressure change in the sealing cavity 7.

In other words, when the airtight detecting assembly detects that the air pressure in the seal chamber 7 is stable, the sealing performance of the seal assembly 30 is good; when the airtight detecting assembly detects a large change in the seal chamber 7, the seal structure 32 of the seal assembly 30 is damaged, and the seal structure 32 needs to be replaced.

In the cladding device 100 provided by the application, the rotating assembly 2 and the bottom wall 11 of the cladding tank 1 form an airtight channel 6 at least partially communicated with the accommodating space 14, at least one of at least two sealing structures 32 in the sealing assembly 30 is used for sealing the airtight channel 6, a sealing cavity 7 is formed by enclosing between the annular body 31, the rotating assembly 2 and two adjacent sealing structures 32, and the airtight detection assembly 4 is used for supplying air to the sealing cavity 7 and detecting the air tightness in the sealing cavity 7. The airtight detection assembly can judge whether the sealing structure 32 is damaged by detecting the air pressure change in the sealing cavity 7, and can prompt a user to replace the sealing structure 32 in time when the sealing structure 32 is damaged, so that the working efficiency of the cladding device 100 is improved.

Referring to fig. 1, 2 and 3, in one embodiment, the air tightness detecting assembly 4 includes an air supply tank (not shown) for supplying air into the sealed cavity 7, and an air pressure detector (not shown) disposed in the air supply tank for detecting air pressure in the air supply tank. When the seal chamber 7 communicates with the space outside the seal chamber 7, the air pressure detector detects a change in air pressure in the air supply tank.

The air tightness detection assembly 4 further comprises a prompt member, wherein the prompt member comprises a display, an alarm or other electronic components with prompt functions. The prompting piece is electrically connected with the air pressure detector and is used for carrying out different prompts according to detection signals of the air pressure detector.

Specifically, when the first sealing structure 321 and the second sealing structure 322 are not damaged and have good sealing performance, the sealing cavity 7 is not communicated with the airtight channel 6 or the external environment, the air pressure in the air supply tank is stable when the air supply tank supplies air into the sealing cavity 7, and the indicator indicates that the sealing structure 32 is good when the air pressure detector detects that the air pressure in the air supply tank is stable; when the first sealing structure 321 and the second sealing structure 322 are damaged, the sealing cavity 7 is communicated with the airtight channel 6 or the external environment, the air pressure in the air supply tank changes when the air supply tank supplies air into the sealing cavity 7, and the prompting piece prompts that the sealing structure 32 is damaged when the air pressure detector detects the air pressure change in the air supply tank.

Referring to fig. 1, 2 and 3, specifically, the annular body 31 is provided with at least one air supply through hole 33 communicating with the seal cavity 7, the air pressure detecting assembly includes an air supply pipe 35 communicating with the air supply tank, the air supply pipe 35 communicates with the air supply through hole 33, and the air in the air supply tank enters the seal cavity 7 through the air supply pipe 35 and the air supply through hole 33.

In one embodiment, the number of the air supply through holes 33 is two, and the connecting line direction of the two air supply through holes 33 is the radial direction of the annular body 31.

The annular body 31 is provided with 2 symmetrical air supply through holes 33 which are communicated with the sealing cavity 7, so that uniformity of air flow in the circumferential direction in the sealing cavity 7 can be improved, and errors in detection of the air pressure detection assembly due to small air flow in any area in the circumferential direction in the sealing cavity 7 are avoided.

In the present embodiment, the number of the air supply pipes 35 and the air supply through holes 33 is the same, and the number of the air supply pipes 35 is 2. In other embodiments, the number of the air supply pipe 35 and the air supply through hole 33 may be 1, 3, 4, or 4 or more, which is not limited in this application.

Referring to fig. 1, 2 and 3, specifically, the first sealing structure 321, the bottom wall 11, the annular body 31 and the rotating assembly 2 enclose to form the airtight passage 6.

The cladding device 100 further comprises an air inlet assembly 5, wherein the air inlet assembly 5 is positioned at one side of the bottom wall 11 away from the accommodating space 14, and the air inlet assembly 5 is communicated with the airtight passage 6 and is used for introducing air into the accommodating space 14 through the airtight passage 6.

Specifically, the annular body 31 is provided with an air inlet through hole 34, the air inlet through hole 34 is communicated with the airtight channel 6, and the air inlet assembly 5 is communicated with the air inlet through hole 34 for air inlet towards the air inlet through hole 34.

In the present embodiment, the air intake assembly 5 includes an air intake pipe 51, and the air intake pipe 51 communicates with the air intake through hole 34 so that air enters the air intake through hole 34 and the airtight passage 6 from the air intake pipe 51.

In the present embodiment, the number of the air intake through holes 34 is 2, and 2 air intake through holes 34 are disposed at two ends of the annular body 31 at opposite intervals, in other words, the connecting line direction of 2 air intake through holes 34 is the radial direction of the annular body 31. The annular body 31 includes 2 symmetrical air inlet through holes 34, which can improve the uniformity of the air flow in the inner circumferential direction of the airtight passage 6, and avoid the air seal failure caused by small air flow in any area in the inner circumferential direction of the airtight passage 6.

In the present embodiment, the number of the intake pipes 51 and the number of the intake through holes 34 are the same, and the number of the intake pipes 51 is 2. In other embodiments, the number of the air intake pipes 51 and the air intake through holes 34 may be 1, or 3, or 4 or more, which is not limited in this application.

Referring to fig. 1, 2 and 3, in one embodiment, one end of the sealing structure 32 is fixedly connected to the annular body 31, and the other end of the sealing structure 32 abuts against the rotating assembly 2.

The circumferential dimension of the inner wall of the annular body 31 is larger than the circumferential dimension of the outer periphery of the rotating assembly 2. One end of the sealing structure 32 is fixedly connected with the annular body 31, and the other end of the sealing structure is in interference fit with the rotating assembly 2, so that the area of a friction part in the sealing structure 32 can be reduced as much as possible, and the service life of the sealing structure 32 is prolonged.

In one embodiment, one end of the sealing structure 32 may be fixedly connected to the rotating assembly 2, and the other end of the sealing structure 32 abuts against the annular body 31, which is not limited in this application.

Referring to fig. 1 to 5, in one embodiment, the air pressure in the airtight passage 6 is greater than the air pressure in the sealing cavity 7, and the end of the first sealing structure 321 near the rotating assembly 2 extends toward a direction gradually approaching the bottom wall 11 and abuts against the outer peripheral surface of the rotating assembly 2.

The end of the first sealing structure 321 near the rotating assembly 2 extends toward a direction gradually approaching the bottom wall 11 and abuts against the outer peripheral surface of the rotating assembly 2, in other words, the end of the first sealing structure 321 near the rotating assembly 2 is inclined toward the bottom wall 11.

The air pressure in the airtight channel 6 is greater than the air pressure in the sealed cavity 7, the pressure difference is generated on the two sides of the first sealing structure 321, so that the first sealing structure 321 is close to one end of the rotating assembly 2 and is subjected to pressure towards the sealed cavity 7, and the first sealing structure 321 is further attached to the rotating assembly 2, so that the tightness in the airtight channel 6 and the sealed cavity 7 is improved.

Referring to fig. 1 to 5, in one embodiment, the air pressure in the airtight passage 6 is smaller than the air pressure in the sealing cavity 7, and the end of the first sealing structure 321 near the rotating assembly 2 extends toward a direction gradually away from the bottom wall 11 and abuts against the outer peripheral surface of the rotating assembly 2.

The end of the first sealing structure 321 near the rotating assembly 2 extends toward a direction gradually away from the bottom wall 11 and abuts against the outer peripheral surface of the rotating assembly 2, in other words, the end of the first sealing structure 321 near the rotating assembly 2 is inclined away from the bottom wall 11.

The air pressure in the airtight channel 6 is less than the air pressure in the sealed cavity 7, the pressure difference is generated on the two sides of the first sealing structure 321, so that the first sealing structure 321 is close to one end of the rotating assembly 2 and is pressed towards the airtight channel 6, and the first sealing structure 321 is further attached to the rotating assembly 2, so that the tightness in the airtight channel 6 and the sealed cavity 7 is improved.

And, when the air pressure of the sealing cavity 7 is greater than the air pressure of the airtight channel 6, even if the first sealing structure 321 is damaged or the airtight channel 6 is communicated with the sealing cavity 7, the material to be stirred cannot fall into the sealing cavity 7 due to the pressure difference because the air pressure of the sealing cavity 7 is greater than the air pressure of the airtight channel 6, so that the sealing performance of the sealing cavity 7 is further improved.

Referring to fig. 1 to 5, in one embodiment, the air pressure in the seal cavity 7 is greater than the air pressure on the side of the second seal structure 322 facing away from the seal cavity 7, and the end of the second seal structure 322 near the rotating assembly 2 extends toward the direction gradually approaching the bottom wall 11 and abuts against the outer peripheral surface of the rotating assembly 2.

The end of the second sealing structure 322 near the rotating assembly 2 extends toward the direction gradually approaching the bottom wall 11 and abuts against the outer peripheral surface of the rotating assembly 2, in other words, the end of the second sealing structure 322 near the rotating assembly 2 is inclined toward the bottom wall 11.

The atmospheric pressure in the seal chamber 7 is greater than the atmospheric pressure that second seal structure 322 deviates from seal chamber 7 one side, the both sides of second seal structure 322 produce pressure differential and make second seal structure 322 is close to the one end of rotating assembly 2 receives the pressure that deviates from seal chamber 7, and then makes second seal structure 322 with rotating assembly 2 laminates more, in order to improve the leakproofness in the seal chamber 7.

Referring to fig. 1 to 6, in one embodiment, the air pressure in the seal cavity 7 is smaller than the air pressure on the side of the second seal structure 322 facing away from the seal cavity 7, and the end of the second seal structure 322 near the rotating assembly 2 extends toward the direction gradually approaching the bottom wall 11 and abuts against the outer peripheral surface of the rotating assembly 2.

The end of the second sealing structure 322 near the rotating assembly 2 extends toward a direction gradually away from the bottom wall 11 and abuts against the outer peripheral surface of the rotating assembly 2, in other words, the end of the second sealing structure 322 near the rotating assembly 2 is inclined away from the bottom wall 11.

The air pressure in the seal cavity 7 is smaller than the air pressure of the second seal structure 322 on one side deviating from the seal cavity 7, the pressure difference is generated on two sides of the second seal structure 322, so that one end, close to the rotating assembly 2, of the second seal structure 322 is subjected to pressure towards the seal cavity 7, and then the first seal structure 321 is attached to the rotating assembly 2, so that the tightness in the seal cavity 7 is improved.

Referring to fig. 1, 2 and 3, the rotating assembly 2 includes a rotating shaft 21 and a bushing 22, the bushing 22 is sleeved on the outer peripheral side of the rotating shaft 21, and the sealing structure 32 abuts against the bushing 22.

The bushing 22 may be used to protect the rotating shaft 21, prevent the rotating shaft 21 from being damaged by contact with the sealing structure 32 or other structural members, and prolong the service life of the rotating shaft 21.

Referring to fig. 1, 2 and 3, in one embodiment, the present application further provides a coating machine. The coating machine comprises a driving device, an air inlet device and the coating device 100, wherein the driving device is connected with the rotating assembly 2 and is used for driving the rotating assembly 2 to rotate. The air inlet device is communicated with the air inlet assembly 5 and used for introducing air towards the air inlet assembly 5.

In this embodiment, the coating machine can improve the sealing performance between the rotating assembly 2 and the bottom wall 11 of the coating tank 1 through the coating device 100, so as to avoid the influence of the entering gap of the material to be stirred on the normal operation of the coating machine.

While the foregoing is directed to embodiments of the present application, it will be appreciated by those of ordinary skill in the art that numerous modifications and variations can be made without departing from the principles of the present application, and such modifications and variations are also considered to be within the scope of the present application.

Claims

1. A cladding device (100), characterized by comprising:

the coating tank (1) comprises an accommodating space (14) for accommodating materials to be stirred;

the rotating assembly (2) penetrates through the bottom wall (11) of the coating tank (1), the rotating assembly (2) rotates relative to the bottom wall (11), the rotating assembly (2) and the bottom wall (11) form at least a partial airtight channel (6), and the airtight channel (6) is communicated with the accommodating space (14);

the sealing assembly (30) is positioned on one side of the bottom wall (11) away from the accommodating space (14), the sealing assembly (30) comprises an annular body (31) and at least two sealing structures (32), the annular body (31) is arranged on the outer peripheral side of the rotating assembly (2), each sealing structure (32) is sealed between the annular body (31) and the rotating assembly (2), at least one of the at least two sealing structures (32) is used for sealing the airtight channel (6), and a sealing cavity (7) is formed by enclosing the annular body (31), the rotating assembly (2) and the adjacent two sealing structures (32); and

And the air tightness detection assembly (4) is communicated with the sealing cavity (7) and is used for supplying air into the sealing cavity (7) and detecting the air tightness in the sealing cavity (7).

2. The cladding apparatus (100) according to claim 1, wherein the air tightness detection assembly (4) comprises an air supply tank for supplying air into the sealed cavity (7), and an air pressure detector provided in the air supply tank for detecting air pressure in the air supply tank; when the sealing cavity (7) is communicated with the space outside the sealing cavity (7), the air pressure detector detects the air pressure change in the air supply tank.

3. Cladding device (100) according to claim 1, wherein at least two of said sealing structures (32) comprise a first sealing structure (321) and a second sealing structure (322), said second sealing structure (322) being provided on a side of said first sealing structure (321) facing away from said bottom wall (11), said first sealing structure (321), said bottom wall (11), said annular body (31) and said rotating assembly (2) enclosing said airtight channel (6);

the cladding device (100) further comprises an air inlet component (5) which is positioned on one side of the bottom wall (11) away from the accommodating space (14), wherein the air inlet component (5) is communicated with the airtight channel (6) and is used for introducing air into the accommodating space (14) through the airtight channel (6).

4. A cladding device (100) according to claim 3, wherein one end of the sealing structure (32) is fixedly connected to the annular body (31), the other end of the sealing structure (32) abutting the rotating assembly (2).

5. The cladding device (100) according to claim 4, wherein the air pressure in the airtight passage (6) is greater than the air pressure in the seal chamber (7), and wherein an end of the first seal structure (321) adjacent to the rotating assembly (2) extends in a direction gradually approaching the bottom wall (11) and abuts against the outer peripheral surface of the rotating assembly (2);

or, the air pressure in the airtight channel (6) is smaller than the air pressure in the sealing cavity (7), and one end of the first sealing structure (321) close to the rotating assembly (2) extends towards a direction gradually away from the bottom wall (11) and is abutted against the outer peripheral surface of the rotating assembly (2).

6. The cladding device (100) according to claim 4, wherein the air pressure in the sealing cavity (7) is greater than the air pressure on the side of the second sealing structure (322) facing away from the sealing cavity (7), and wherein the end of the second sealing structure (322) adjacent to the rotating assembly (2) extends towards the direction gradually approaching the bottom wall (11) and abuts against the outer circumferential surface of the rotating assembly (2);

or, the air pressure in the sealing cavity (7) is smaller than the air pressure at one side of the second sealing structure (322) deviating from the sealing cavity (7), and one end, close to the rotating assembly (2), of the second sealing structure (322) extends towards a direction gradually approaching to the bottom wall (11) and is abutted to the outer peripheral surface of the rotating assembly (2).

7. Cladding apparatus (100) according to claim 2, wherein the annular body (31) is provided with at least one gas supply through hole (33) communicating with the sealed cavity (7), the gas pressure detector comprises a gas supply pipe (35) communicating with the gas supply tank, the gas supply pipe (35) communicates with the gas supply through hole (33), and the gas in the gas supply tank enters the sealed cavity (7) through the gas supply pipe (35) and the gas supply through hole (33).

8. Cladding device (100) according to claim 7, wherein the number of air supply through holes (33) is two, and the direction of the connection of two air supply through holes (33) is the radial direction of the annular body (31).

9. Cladding apparatus (100) according to claim 1, wherein the rotating assembly (2) comprises a rotating shaft (21) and a bushing (22), the bushing (22) being sleeved on the outer peripheral side of the rotating shaft (21), the sealing structure (32) abutting the bushing (22).

10. A cladding machine, characterized by comprising a driving device, an air inlet device and a cladding device (100) according to any one of claims 1-9, wherein the driving device is connected with the rotating assembly (2) and is used for driving the rotating assembly (2) to rotate, and the air inlet device is communicated with the air inlet assembly (5) and is used for introducing air towards the air inlet assembly (5).