Sealing structure and stirring device

Abstract

The invention relates to a sealing structure and a stirring device, the sealing structure comprises a first connecting plate, a sealing assembly and a second connecting plate, and the peripheral surface of the first connecting plate is provided with a cambered surface; the sealing assembly is arranged around the periphery of the cambered surface; the second connecting plate is arranged around the periphery of the first connecting plate, and the sealing assembly is connected between the arc face and the second connecting plate in an abutting mode. According to the sealing structure, sealing is conducted through the peripheral face of the first connecting plate instead of the end face of the shaft end oil sealing plate, and the situation that sealing between the first connecting plate and the second connecting plate is affected by end face welding deformation generated after the second connecting plate and the stirring bin cover plate are welded can be avoided; the arc surface is arranged on the peripheral surface of the first connecting plate, so that the axis of the first connecting plate can slightly and properly swing relative to the second connecting plate, the axis of the first connecting plate can be adjusted to a preset position after being sealed, and the influence of end face deformation of the second connecting plate on axis positioning of the first connecting plate is conveniently corrected.

Description

Technical Field

[0001] The present application relates to the technical field of production and manufacturing equipment, and in particular to a sealing structure and a stirring device. Background Art

[0002] In the fields of chemical industry, pharmaceutical industry, food industry, metallurgy industry, etc., the materials need to be stored, mixed and stirred by stirring devices during the production process to achieve a fully mixed state. Figure 1 and Figure 2 As shown, the shaft end oil seal plate 8 is welded to the mixing bin cover plate 7, the straight cylindrical bottom plate 9 is connected to the shaft end oil seal plate 8 through the connecting assembly 5, and a sealing ring 21 is provided on the end face of the straight cylindrical bottom plate 9 to achieve sealing between the straight cylindrical bottom plate 9 and the shaft end oil seal plate 8; the stirring shaft 6 is coaxially arranged with the straight cylindrical bottom plate 9, and the stirring shaft 6 can rotate relative to the straight cylindrical bottom plate 9 to facilitate stirring of the material inside the mixing bin.

[0003] After the shaft end oil seal plate 8 is welded to the mixing chamber cover plate 7, the shaft end oil seal plate 8 is prone to welding deformation, resulting in an uneven end face of the shaft end oil seal plate 8. At this time, the straight cylinder bottom plate 9 and the shaft end oil seal plate 8 cannot be tightly fitted, and there is a gap between the sealing end faces of the two, which will cause the end face seal between the shaft end oil seal plate 8 and the straight cylinder bottom plate 9 to fail; in addition, since the end face of the shaft end oil seal plate 8 is uneven after welding deformation, it is impossible to accurately position the straight cylinder bottom plate 9, which will cause the axis of the straight cylinder bottom plate 9 to deviate from the preset position. Summary of the Invention

[0004] The present application provides a sealing structure and a stirring device to solve the technical problem that the end face sealing between the shaft end oil seal plate and the straight cylinder bottom plate in the stirring device fails due to welding deformation, and the axis of the straight cylinder bottom plate deviates from the preset position.

[0005] In a first aspect, the present application provides a sealing structure, comprising:

[0006] A first connecting plate, wherein the outer peripheral surface of the first connecting plate has an arc surface;

[0007] A sealing component is disposed around the outer periphery of the arc surface;

[0008] The second connecting plate is arranged around the outer periphery of the first connecting plate, and the sealing component is abutted between the arc surface and the second connecting plate.

[0009] Optionally, the sealing structure further includes a sealing cover plate, which is arranged around the outer circumference of the first connecting plate, and the second connecting plate is connected to the sealing cover plate.

[0010] Optionally, the sealing cover plate is made of elastic material.

[0011] Optionally, the second connecting plate includes a first mating surface, a second mating surface and a third mating surface connected in a Z shape, the first mating surface abuts the first side plate surface of the first connecting plate, the second mating surface abuts the sealing assembly, and the third mating surface abuts the sealing cover plate.

[0012] Optionally, the sealing cover plate includes a fourth mating surface, a fifth mating surface and a sixth mating surface connected in a Z shape, the fourth mating surface abuts the second side plate surface of the first connecting plate, the fifth mating surface abuts the sealing assembly, and the sixth mating surface abuts the third mating surface.

[0013] Optionally, along the axial direction of the first connecting plate, the outer peripheral surface of the first connecting plate has at least two grooves sunken into the arc surface.

[0014] Optionally, the sealing assembly includes at least two sealing rings, which are embedded in the grooves, and at least part of the sealing rings protrude from the arc surface for contact with the second connecting plate or the sealing cover plate.

[0015] Optionally, along the axial direction of the first connecting plate, the arc surface is an arched arc surface; and at least two sealing rings are symmetrically arranged on both sides of the arc surface.

[0016] Optionally, the sealing structure further includes a connecting assembly, which is connected to the second connecting plate and the sealing cover plate respectively.

[0017] In the second aspect, the present application provides a stirring device, including the sealing structure provided in the first aspect of the present application, and also including a stirring shaft, which is inserted into the first connecting plate, and the axis of the first connecting plate coincides with the axis of the stirring shaft.

[0018] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0019] The sealing structure provided in the embodiment of the present application structurally improves the shaft end oil seal plate and the straight cylinder bottom plate, wherein the first connecting plate is the structurally improved straight cylinder bottom plate, and the second connecting plate is the structurally improved shaft end oil seal plate, the outer peripheral surface of the first connecting plate has an arc surface, and the sealing component abuts between the arc surface and the second connecting plate, and the sealing form is changed from sealing through the end face of the shaft end oil seal plate to sealing through the outer peripheral surface of the first connecting plate, which can avoid the end face welding deformation caused by welding the second connecting plate to the stirring chamber cover plate affecting the sealing between the first connecting plate and the second connecting plate; an arc surface is provided on the outer peripheral surface of the first connecting plate, so that the axis of the first connecting plate can swing slightly relative to the second connecting plate, so that the axis of the first connecting plate can be adjusted to a preset position after sealing, so as to correct the influence of the end face deformation of the second connecting plate on the axis positioning of the first connecting plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0022] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0023] Figure 1 It is a partial cross-sectional view of the sealing structure of the end face of the mixing chamber in the prior art;

[0024] Figure 2 for Figure 1 A detailed enlarged view of Part I;

[0025] Figure 3 A partial cross-sectional view of a sealing structure provided in an embodiment of the present application;

[0026] Figure 4 Provided in the embodiments of this application Figure 3 A detailed enlarged view of Part II;

[0027] Figure 5 Provided in the embodiments of this application Figure 4 A detailed enlarged view of Part III;

[0028] Figure 6 An axial view of the sealing structure provided in an embodiment of the present application;

[0029] Figure 7 A partial cross-sectional view of the second connecting plate provided in an embodiment of the present application;

[0030] Figure 8 A partial cross-sectional view of the sealing cover plate provided in an embodiment of the present application.

[0031] Description of reference numerals:

[0032] 1. First connecting plate; 11. Arc surface; 12. Groove; 13. Agitator shaft mounting hole;

[0033] 2. Sealing assembly; 21. Sealing ring;

[0034] 3. Second connecting plate; 31. First mating surface; 32. Second mating surface; 33. Third mating surface;

[0035] 4. Sealing cover plate; 41. Fourth mating surface; 42. Fifth mating surface; 43. Sixth mating surface;

[0036] 5. Connect components;

[0037] 6. Stirring shaft;

[0038] 7. Mixing chamber cover;

[0039] 8. Shaft end oil seal plate;

[0040] 9. Straight bottom plate. DETAILED DESCRIPTION

[0041] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0042] The disclosure below provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the present application. In addition, the present application may repeat reference numbers and / or letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0043] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of an element or feature relative to another element or feature as shown in the figures. These relative terms are, for example, "inside," "outside," "inside," "outside," "below," "below," "above," "above," "front," "back," etc. Such spatially relative terms are intended to include different orientations of the sealing structure during use or operation other than the orientation depicted in the figures. For example, if the sealing structure in the figures undergoes a position flip or a change in posture or a change in motion state, then these directional indications will also change accordingly. For example, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below..." may include both above and below orientations. The sealing structure may be oriented otherwise (rotated 90 degrees or in other directions) and the spatially relative descriptors used herein are interpreted accordingly.

[0044] In order to solve the technical problems in the prior art that the end face seal between the shaft end oil seal plate 8 and the straight cylinder bottom plate 9 fails due to welding deformation, and the axis of the straight cylinder bottom plate 9 deviates from the preset position, the first aspect of the embodiment of the present application provides a sealing structure, which improves the structure of the shaft end oil seal plate 8 and the straight cylinder bottom plate 9, and changes the end face seal between the shaft end oil seal plate 8 and the straight cylinder bottom plate 9 to a circumferential seal (that is, from an axial seal to a radial seal), thereby reducing the influence of the end face gap between the two on the sealing performance and the axial position of the straight cylinder bottom plate 9, and realizing reliable sealing between the shaft end oil seal plate 8 and the straight cylinder bottom plate 9 after welding.

[0045] In some embodiments of this application, please refer to Figures 3 to 8 The sealing structure provided by the embodiment of the present application includes: a first connecting plate 1, a sealing assembly 2 and a second connecting plate 3, wherein the first connecting plate 1 is a straight bottom plate 9 after structural improvement, and the second connecting plate 3 is a shaft end oil seal plate 8 after structural improvement; specifically, the outer peripheral surface of the first connecting plate 1 has an arc surface 11, such as Figure 5As shown; the sealing component 2 is arranged around the outer periphery of the arc surface 11; the second connecting plate 3 is arranged around the outer periphery of the first connecting plate 1, and the sealing component 2 is abutted between the arc surface 11 and the second connecting plate 3, and the sealing form is changed from sealing through the end face of the shaft end oil seal plate 8 to sealing through the outer periphery of the first connecting plate 1, which can avoid the end face welding deformation caused by welding the second connecting plate 3 and the mixing chamber cover plate 7 affecting the seal between the first connecting plate 1 and the second connecting plate 3; a arc surface 11 is provided on the outer periphery of the first connecting plate 1, so that the axis of the first connecting plate 1 can swing slightly relative to the second connecting plate 3 (the swing degree is less than 3°), so that the axis of the first connecting plate 1 can be adjusted to a preset position after sealing, so as to correct the influence of the end face deformation of the second connecting plate 3 on the axis positioning of the first connecting plate 1.

[0046] It should be noted that, along the direction from the first connecting plate 1 to the second connecting plate 3, the arc surface 11 can be an arched arc surface, so that the first connecting plate 1 has a drum-shaped structure; the arc surface 11 can also be a tapered arc surface with a gradually decreasing diameter, so that the first connecting plate 1 has a basin-shaped structure, and at this time a mating surface matching the tapered arc surface can be provided on the second connecting plate 3; the above two types of arc surfaces 11 can both make the axis of the first connecting plate 1 swing slightly relative to the second connecting plate 3, so as to facilitate the correction of the influence of the end face deformation of the second connecting plate 3 on the axis positioning of the first connecting plate 1.

[0047] It should be noted that in order to correct the influence of the end face deformation of the second connecting plate 3 on the axial positioning of the first connecting plate 1, the first connecting plate 1 cooperates with the second connecting plate 3 through the arc surface 11. By adjusting the contact position of the arc surface 11 and the second connecting plate 3, the cooperating end faces between the two are relatively tilted. At this time, the mounting holes on the first connecting plate 1 and the second connecting plate 3 cannot reach a coaxial state. If the first connecting plate 1 and the second connecting plate 3 are directly connected through the connecting component 5, the connecting component 5 will not be able to be inserted into the mounting holes on the first connecting plate 1 and the second connecting plate 3 in sequence, resulting in the first connecting plate 1 and the second connecting plate 3 being unable to be connected after sealing is achieved.

[0048] In order to solve the above problems, in some embodiments of the present application, please refer to Figure 3 and Figure 4 The sealing structure also includes a sealing cover plate 4, which is arranged around the outer periphery of the first connecting plate 1. The first connecting plate 1 is limited by the sealing cover plate 4, and the second connecting plate 3 is connected to the sealing cover plate 4 to achieve an overall connection between the first connecting plate 1, the sealing cover plate 4 and the second connecting plate 3.

[0049] To accommodate the swinging position of the first connecting plate 1 relative to the second connecting plate 3, the sealing cover plate 4 must possess a certain degree of deformation. In some embodiments of the present application, the sealing cover plate 4 is made of an elastic material, specifically plastic, rubber, or other materials. To ensure that the sealing cover plate 4 can limit the position of the first connecting plate 1, the sealing cover plate 4 must possess a certain degree of structural strength. In a preferred embodiment of the present application, the sealing cover plate 4 is made of PTFE (polytetrafluoroethylene). This material not only provides a certain degree of deformation and structural strength, but also offers advantages such as corrosion resistance, wear resistance, high toughness, long service life, and excellent sealing performance, making it suitable for industrial production.

[0050] In order to achieve a tight fit between the first connecting plate 1, the second connecting plate 3 and the sealing cover plate 4, in some embodiments of the present application, please refer to Figure 3 、 Figure 4 and Figure 7 In the axial direction of the second connecting plate 3, the second connecting plate 3 includes a first mating surface 31, a second mating surface 32 and a third mating surface 33 connected in a Z shape. Specifically, the first mating surface 31 is a plane arranged opposite to the first side plate surface of the first connecting plate 1, and the first mating surface 31 abuts the first side plate surface of the first connecting plate 1. The second mating surface 32 is a cylindrical surface, and the second mating surface 32 abuts the sealing assembly 2. The third mating surface 33 is a plane arranged opposite to the sealing cover plate 4, and the third mating surface 33 abuts the sealing cover plate 4. The elastic deformation of the sealing assembly 2 and the sealing cover plate 4 achieves a tight fit with the second connecting plate 3, thereby preventing the material in the stirring device from leaking outward from between the first mating surface 31 and the first side plate surface of the first connecting plate 1.

[0051] It should be noted that the sealing cover plate 4 is located on the second side of the first connecting plate 1. When the third mating surface 33 protrudes from the second side plate surface of the first connecting plate 1, a gap may appear between the contact surface of the sealing cover plate 4 and the first connecting plate 1, resulting in the sealing cover plate 4 being unable to be pressed tightly against the first connecting plate 1 and the second connecting plate 3. The sealing cover plate 4 cannot play a limiting role on the first connecting plate 1, nor can it further enhance the sealing effect between the first connecting plate 1 and the second connecting plate 3.

[0052] In order to solve the above problem, in the axial direction of the first connecting plate 1, the second side plate surface of the first connecting plate 1 is protruded from the third matching surface 33. In order to further enhance the sealing effect through the sealing cover plate 4, in some embodiments of the present application, please refer to Figure 3 、 Figure 4 and Figure 8In the axial direction of the sealing cover plate 4, the sealing cover plate 4 includes a fourth mating surface 41, a fifth mating surface 42 and a sixth mating surface 43 connected in a Z shape. Specifically, the fourth mating surface 41 is a plane arranged opposite to the second side plate surface of the first connecting plate 1, and the fourth mating surface 41 abuts the second side plate surface of the first connecting plate 1. The fifth mating surface 42 is a cylindrical surface, and the fifth mating surface 42 abuts the sealing assembly 2. The sixth mating surface 43 is a plane arranged opposite to the third mating surface 33, and the sixth mating surface 43 abuts the third mating surface 33. The fourth mating surface 41 and the fifth mating surface 42 are used to achieve sealing between the sealing cover plate 4 and the first connecting plate 1 in the axial direction and the radial direction, and the sealing cover plate 4 is limited to the first connecting plate 1. The sealing between the sealing cover plate 4 and the second connecting plate 3 is achieved by the sixth mating surface 43 abutting on the third mating surface 33, which can further enhance the sealing effect between the first connecting plate 1 and the second connecting plate 3.

[0053] In order to prevent the sealing assembly 2 from moving during use of the stirring device, a mounting structure for mounting the sealing assembly 2 needs to be provided on the first connecting plate 1 .

[0054] In some embodiments of this application, please refer to Figure 5 Along the axial direction of the first connecting plate 1 , the outer peripheral surface of the first connecting plate 1 has at least two grooves 12 recessed in the arc surface 11 for installing the sealing assembly 2 .

[0055] Since the sealing assembly 2 on the outer periphery of the first connecting plate 1 needs to abut against the second mating surface 32 and the fifth mating surface 42 respectively, in some embodiments of the present application, please refer to Figure 3 、 Figure 4 and Figure 5 The sealing assembly 2 includes at least two sealing rings 21, and the multiple sealing rings 21 are embedded in the multiple grooves 12 in a one-to-one correspondence. At least part of the sealing rings 21 protrudes from the arc surface 11 and is used to abut against the second mating surface 32 of the second connecting plate 3 or the fifth mating surface 42 of the sealing cover plate 4. The elastic deformation of the sealing rings 21 realizes the sealing between the first connecting plate 1 and the second connecting plate 3, and between the first connecting plate 1 and the sealing cover plate 4.

[0056] In order to make the first connecting plate 1 bear force evenly on both sides in the axial direction, as a preferred embodiment of the present application, along the axial direction of the first connecting plate 1, the arc surface 11 is an arched arc surface, so that the cross-sectional profile of the arc surface 11 is a shape with a high middle and low sides, such as Figure 5 As shown; at least two sealing rings 21 are symmetrically arranged on both sides of the arc surface 11, respectively used to contact the second mating surface 32 of the second connecting plate 3 or the fifth mating surface 42 of the sealing cover plate 4, and withstand the external force applied from the second connecting plate 3 and the sealing cover plate 4.

[0057] In order to achieve a fixed connection between the sealing cover plate 4, the first connecting plate 1 and the second connecting plate 3, in some embodiments of the present application, refer to Figure 3 、 Figure 4 and Figure 6 The sealing structure further includes a connecting component 5, which is connected to the second connecting plate 3 and the sealing cover plate 4 respectively.

[0058] It should be noted that, in order to prevent the connection component 5 from affecting the slight swing of the first connection plate 1, the connection component 5 is arranged outside the first connection plate 1 along the circumference of the first connection plate 1, such as Figure 6 shown.

[0059] Specifically, the connecting assembly 5 includes screws, spring washers and flat washers. The shapes of the sealing cover plate 4 and the second connecting plate 3 can be set according to the structure of the stirring device. A plurality of through holes are provided along the circumference of the sealing cover plate 4, and a plurality of threaded holes are provided along the circumference of the second connecting plate 3. The screws pass through the elastic washers, flat washers and the through holes on the sealing cover plate 4 in turn, and are finally locked on the threaded holes of the second connecting plate 3.

[0060] It should be noted that in the existing end face sealing structure, the deformation of the shaft end oil seal plate 8 during welding will affect the axis of the straight cylinder bottom plate 9, and will also cause the axis of the stirring shaft 6 coaxially arranged with the straight cylinder bottom plate 9 to not be in the preset position. In order to achieve normal operation of the stirring device, the main shaft of the stirring shaft 6 is usually required to be re-processed by a large gantry machine tool to achieve axis correction. The processing is inconvenient, time-consuming and labor-intensive, and will also incur high processing costs.

[0061] In response to the above-mentioned problems, a second aspect of the embodiments of the present application provides a stirring device, comprising the sealing structure described in any one of the above-mentioned embodiments, and further comprising a stirring shaft 6, wherein the stirring shaft 6 is inserted into the stirring shaft mounting hole 13 of the first connecting plate 1, and the axis of the first connecting plate 1 coincides with the axis of the stirring shaft 6. Since the axis of the first connecting plate 1 can swing slightly relative to the second connecting plate 3, it is convenient to correct the influence of the end face deformation of the second connecting plate 3 on the axis positioning of the first connecting plate 1, and the axis of the stirring shaft 6 can be ensured to be in the preset position. There is no need to perform corrective processing on the stirring shaft 6 after assembly is completed, thereby saving equipment manufacturing time and equipment processing costs.

[0062] See also Figures 3 to 8 In some embodiments of the present application, the manufacturing method of the stirring device is as follows:

[0063] Step 1: Processing an arc surface 11 and a groove 12 on the outer peripheral surface of the first connecting plate 1; and placing a sealing ring 21 in the groove 12;

[0064] Step 2: Weld the second connecting plate 3 to the mixing chamber cover plate 7;

[0065] Step 3: Place the first side surface of the first connecting plate 1 in contact with the first mating surface 31 of the second connecting plate 3, and position the arc surface 11 opposite to the second mating surface 32 of the second connecting plate 3, so that at least one sealing ring 21 is in contact between the arc surface 11 and the second mating surface 32, thereby achieving sealing between the first connecting plate 1 and the second connecting plate 3;

[0066] Step 4: Sleeve the sealing cover plate 4 on the outside of the first connecting plate 1, so that the fourth mating surface 41 of the sealing cover plate 4 abuts the second side plate surface of the first connecting plate 1, and the fifth mating surface 42 is arranged opposite to the arc surface 11. At least one sealing ring 21 abuts between the fifth mating surface 42 and the arc surface 11, and the sealing cover plate 4 and the first connecting plate 1 are sealed in the axial direction and the radial direction through the fourth mating surface 41 and the fifth mating surface 42; the sixth mating surface 43 abuts on the third mating surface 33 to achieve the sealing between the sealing cover plate 4 and the second connecting plate 3, which can further enhance the sealing effect between the first connecting plate 1 and the second connecting plate 3.

[0067] Step 5: Adjust the position of the first connecting plate 1 relative to the second connecting plate 3 so that the axis of the first connecting plate 1 is at a preset position, and fix the sealing cover plate 4 on the second connecting plate 3 through the connecting assembly 5 to achieve overall fixation of the sealing structure.

[0068] Step 6: Assemble the stirring shaft 6 and the first connecting plate 1 to complete the assembly of other components in the stirring device.

[0069] It should be noted that the sealing structure provided in the embodiment of the present application is not only applicable to the end sealing of the mixing chamber, but also applicable to other situations where the sealing end surface is deformed due to welding.

[0070] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0071] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0072] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A sealing structure, characterized in that: include: A first connecting plate (1), wherein the outer peripheral surface of the first connecting plate (1) has a curved surface (11); A sealing component (2), the sealing component (2) being disposed around the outer periphery of the arc surface (11); A second connecting plate (3), the second connecting plate (3) is arranged around the outer circumference of the first connecting plate (1), and the sealing component (2) is abutted between the arc surface (11) and the second connecting plate (3).

2. The sealing structure according to claim 1, characterized in that: The sealing structure further comprises a sealing cover plate (4), wherein the sealing cover plate (4) is arranged around the outer circumference of the first connecting plate (1), and the second connecting plate (3) is connected to the sealing cover plate (4).

3. The sealing structure according to claim 2, characterized in that: The sealing cover plate (4) is made of elastic material.

4. The sealing structure according to claim 3, characterized in that: The second connecting plate (3) comprises a first mating surface (31), a second mating surface (32) and a third mating surface (33) connected in a Z-shape, the first mating surface (31) abutting against a first side plate surface of the first connecting plate (1), the second mating surface (32) abutting against the sealing assembly (2), and the third mating surface (33) abutting against the sealing cover plate (4).

5. The sealing structure according to claim 4, characterized in that: The sealing cover plate (4) comprises a fourth mating surface (41), a fifth mating surface (42) and a sixth mating surface (43) connected in a Z-shape, the fourth mating surface (41) abuts against the second side plate surface of the first connecting plate (1), the fifth mating surface (42) abuts against the sealing assembly (2), and the sixth mating surface (43) abuts against the third mating surface (33).

6. The sealing structure according to claim 2, characterized in that: Along the axial direction of the first connecting plate (1), the outer peripheral surface of the first connecting plate (1) has at least two grooves (12) sunken into the arc surface (11).

7. The sealing structure according to claim 6, characterized in that: The sealing assembly (2) comprises at least two sealing rings (21), wherein the sealing rings (21) are embedded in the groove (12), and at least part of the sealing rings (21) protrudes from the arc surface (11) and is used to abut against the second connecting plate (3) or the sealing cover plate (4).

8. The sealing structure according to claim 7, characterized in that: Along the axial direction of the first connecting plate (1), the arc surface (11) is an arched arc surface; at least two sealing rings (21) are symmetrically arranged on both sides of the arc surface (11).

9. The sealing structure according to claim 2, characterized in that: The sealing structure further comprises a connecting assembly (5), wherein the connecting assembly (5) is respectively connected to the second connecting plate (3) and the sealing cover plate (4).

10. A stirring device, characterized in that: It comprises a sealing structure as claimed in any one of claims 1 to 9, and further comprises a stirring shaft (6), wherein the stirring shaft (6) is inserted into the first connecting plate (1), and the axis of the first connecting plate (1) coincides with the axis of the stirring shaft (6).

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