Connecting components

Abstract

The utility model provides a connection assembly, which is used to connect a stirring shaft and a sleeve, the sleeve is sleeved on the stirring shaft and has a clearance fit with the stirring shaft, and the connection assembly includes: a first connection ring and a first flexible member, the first connection ring is used to connect the sleeve and the stirring shaft, along the axial direction of the stirring shaft, the first connection ring, the first flexible member and the sleeve are sleeved on the stirring shaft in sequence, the two sides of the first flexible member are in contact with the first connection ring and the sleeve respectively, the first connection ring is pressed on the first flexible member, so that the first flexible member is deformed along the radial direction of the stirring shaft and squeezes the stirring shaft; wherein the first connection ring and the stirring shaft have a clearance fit. The utility model solves the problem in the prior art that the enamel stirring shaft is easily damaged at the fitting point between the open sleeve and the enamel stirring shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a connection component. Background Art

[0002] The enameled stirring kettle is used as a reaction vessel with acidic or toxic media. The enameled reactor is usually equipped with an enameled stirring shaft. Since there is a circumferential gap between the enameled stirring shaft and the enameled reactor, a special mechanical seal for the enameled reactor is usually used to seal the circumferential gap. The special mechanical seal for the enameled reactor includes an atmospheric dynamic ring, an upper drive ring, a lower drive ring, an open shaft sleeve and bolts. The open shaft sleeve is connected to the atmospheric dynamic ring, and the open shaft sleeve is sleeved on the enameled stirring shaft. The beveled drive ring is sleeved on the outside of the open shaft sleeve. The bolts are inserted into the two beveled drive rings and tightened so that the two beveled drive rings squeeze the open shaft sleeve, so that the open shaft sleeve is directly in contact with and tightly holds the enameled stirring shaft, so that the open shaft sleeve is tightly connected to the enameled stirring shaft, and the enameled stirring shaft is connected to the atmospheric dynamic ring. The atmospheric dynamic ring can rotate with the enameled stirring shaft, thereby allowing the enameled stirring kettle to operate normally.

[0003] However, during operation, the medium fluid will impact the enameled stirring shaft, causing the enameled stirring shaft to shake and hit the open sleeve. Since the open sleeve is made of steel, the enameled stirring shaft is easily damaged at the fitting point between the open sleeve and the enameled stirring shaft. Utility Model Content

[0004] The main purpose of the utility model is to provide a connection assembly to solve the problem in the prior art that the enameled stirring shaft is easily damaged at the fitting position between the open shaft sleeve and the enameled stirring shaft.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a connecting component for connecting a stirring shaft and a sleeve, the sleeve is sleeved on the stirring shaft and has a clearance fit with the stirring shaft, the connecting component includes: a first connecting ring and a first flexible member, the first connecting ring is used to connect the sleeve and the stirring shaft, along the axial direction of the stirring shaft, the first connecting ring, the first flexible member and the sleeve are sequentially sleeved on the stirring shaft, the two sides of the first flexible member are respectively in contact with the first connecting ring and the sleeve, the first connecting ring is pressed on the first flexible member, so that the first flexible member is deformed along the radial direction of the stirring shaft and squeezes the stirring shaft; wherein the first connecting ring and the stirring shaft have a clearance fit.

[0006] Furthermore, the connecting assembly also includes a second connecting ring, the first connecting ring and the second connecting ring are connected, the second connecting ring and the sleeve are connected, the circumferential inner side surface of the second connecting ring contacts the circumferential outer side surface of the first connecting ring and the circumferential outer side surface of the sleeve, and when the first flexible member is deformed, the first flexible member squeezes the circumferential inner side surface of the second connecting ring.

[0007] Furthermore, the connecting assembly also includes a first threaded fastener, a first fastening hole is provided on the sleeve, and a second fastening hole is provided on the second connecting ring. The first fastening hole and the second fastening hole both extend in the radial direction of the stirring shaft. The first threaded fastener is passed through the second fastening hole and the first fastening hole to connect the second connecting ring and the sleeve; wherein the first threaded fastener is clearance-fitted with the second connecting ring and the sleeve.

[0008] Furthermore, there are a plurality of first threaded fasteners, and the plurality of first threaded fasteners are arranged at intervals on the circumferential outer side of the second connecting ring along the circumferential direction of the second connecting ring.

[0009] Furthermore, the connecting assembly also includes a second threaded fastener, a third fastening hole is provided on the first connecting ring, and a fourth fastening hole is provided on the second connecting ring. The third fastening hole and the fourth fastening hole both extend along the axial direction of the stirring shaft. The second threaded fastener penetrates into the third fastening hole and the fourth fastening hole to fasten the first connecting ring and the second connecting ring so that the first connecting ring is pressed onto the first flexible member.

[0010] Furthermore, the connecting assembly also includes a third connecting ring and a second flexible member, the third connecting ring is connected to the first connecting ring, the second flexible member is sleeved on the stirring shaft and is arranged on the side of the first connecting ring away from the sleeve, and the third connecting ring is pressed on the circumferential outer side of the second flexible member so that the second flexible member and the stirring shaft abut against each other, so that the third connecting ring and the stirring shaft are connected.

[0011] Furthermore, the first connecting ring includes a first ring portion and a second ring portion which are arranged in sequence along the axial direction of the first connecting ring, the diameter of the first ring portion is larger than the diameter of the second ring portion, the third fastening hole is arranged on the first ring portion, the circumferential outer side surface of the second ring portion is in contact with the circumferential inner side surface of the second connecting ring, and the axial side surface of the second ring portion is pressed on the first flexible part to cause the first flexible part to deform.

[0012] Furthermore, the connecting assembly also includes a third fastener, a fifth fastening hole is provided on the third connecting ring, a sixth fastening hole is provided on the first connecting ring, the fifth fastening hole and the sixth fastening hole both extend along the axial direction of the stirring shaft, and the third fastener is penetrated into the fifth fastening hole and the sixth fastening hole to connect the third connecting ring and the first connecting ring; wherein the third fastener and the sixth fastening hole are clearance-fitted.

[0013] Furthermore, the third connecting ring includes two connecting ring parts, and the connecting assembly also includes a fourth threaded fastener. Each connecting ring part is provided with a seventh fastening hole, and each seventh fastening hole extends along the radial direction of the stirring shaft. The fourth threaded fastener is inserted into the seventh fastening hole on the two connecting ring parts, so that the third connecting ring is pressed on the circumferential outer side of the second flexible part.

[0014] Further, there are multiple third fasteners, and the multiple third fasteners are spaced on the third connecting ring along the circumferential direction of the third connecting ring.

[0015] The technical solution of the utility model is applied, and the connection assembly of the utility model includes a first connection ring and a first flexible member, the sleeve is sleeved on the stirring shaft and is in clearance fit with the stirring shaft, the first connection ring is used to connect the sleeve and the stirring shaft, and the two sides of the first flexible member are in contact with the first connection ring and the sleeve respectively. The first connection ring is pressed on the first flexible member, so that the first flexible member is deformed and squeezes the stirring shaft in the radial direction of the stirring shaft, so the first flexible member can squeeze the stirring shaft in the radial direction of the stirring shaft, avoiding the stirring shaft from moving toward the direction close to the sleeve when shaking, thereby avoiding direct contact between the stirring shaft and the sleeve, causing damage to the stirring shaft, thereby solving the problem of easy damage to the enameled stirring shaft at the fitting point of the open sleeve and the enameled stirring shaft in the prior art, effectively avoiding hard contact between the stirring shaft and the sleeve, thereby reducing the possibility of damage to the glaze surface of the stirring shaft and porcelain explosion caused by hard contact, and improving the working stability and safety of the enameled stirring kettle. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 The figure shows an assembly diagram of a connection assembly and a stirring shaft according to the utility model.

[0018] The above drawings include the following reference numerals:

[0019] 1. stirring shaft; 2. shaft sleeve; 10. first connecting ring; 11. first flexible member; 12. first ring portion; 13. second ring portion; 20. second connecting ring; 31. first threaded fastener; 32. second threaded fastener; 33. third fastener; 34. fourth threaded fastener; 40. third connecting ring; 41. second flexible member. DETAILED DESCRIPTION

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0022] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0023] Please refer to Figure 1 The utility model provides a connection assembly for connecting a stirring shaft 1 and a sleeve 2. The sleeve 2 is sleeved on the stirring shaft 1 and has a clearance fit with the stirring shaft 1. The connection assembly includes: a first connection ring 10 and a first flexible member 11. The first connection ring 10 is used to connect the sleeve 2 and the stirring shaft 1. Along the axial direction of the stirring shaft 1, the first connection ring 10, the first flexible member 11 and the sleeve 2 are sleeved on the stirring shaft 1 in sequence. The two sides of the first flexible member 11 are in contact with the first connection ring 10 and the sleeve 2 respectively. The first connection ring 10 is pressed on the first flexible member 11 so that the first flexible member 11 is deformed along the radial direction of the stirring shaft 1 and squeezes the stirring shaft 1; wherein the first connection ring 10 and the stirring shaft 1 have a clearance fit.

[0024] The connection assembly of the utility model includes a first connection ring 10 and a first flexible member 11. The sleeve 2 is sleeved on the stirring shaft 1 and is in clearance fit with the stirring shaft 1. The first connection ring 10 is used to connect the sleeve 2 and the stirring shaft 1. The two sides of the first flexible member 11 are in contact with the first connection ring 10 and the sleeve 2 respectively. The first connection ring 10 is pressed on the first flexible member 11, so that the first flexible member 11 is deformed and squeezes the stirring shaft 1 along the radial direction of the stirring shaft 1, so that the first flexible member 11 can squeeze the stirring shaft 1 along the radial direction of the stirring shaft 1, avoiding the stirring shaft 1 from moving toward the direction close to the sleeve 2 when shaking, thereby avoiding direct contact between the stirring shaft 1 and the sleeve 2, resulting in damage to the stirring shaft 1, thereby solving the problem of easy damage to the enameled stirring shaft at the fitting point of the open sleeve and the enameled stirring shaft in the prior art, effectively avoiding hard contact between the stirring shaft 1 and the sleeve 2, thereby reducing the possibility of damage to the glaze surface of the stirring shaft 1 and porcelain explosion caused by hard contact, and improving the working stability and safety of the enameled stirring kettle.

[0025] Specifically, the first flexible member 11 is an O-ring, which can seal the stirring shaft 1 at the same time.

[0026] In this embodiment, the connecting assembly also includes a second connecting ring 20, the first connecting ring 10 and the second connecting ring 20 are connected, the second connecting ring 20 and the sleeve 2 are connected, the circumferential inner side surface of the second connecting ring 20 contacts the circumferential outer side surface of the first connecting ring 10 and the circumferential outer side surface of the sleeve 2, and when the first flexible member 11 is deformed, the first flexible member 11 squeezes the circumferential inner side surface of the second connecting ring 20.

[0027] Specifically, the second connecting ring 20 is used to connect the first connecting ring 10 and the sleeve 2, so that the first connecting ring 10 and the sleeve 2 are connected; the second connecting ring 20 is simultaneously sleeved on the first connecting ring 10 and the sleeve 2. When the first flexible member 11 is deformed, the first flexible member 11 squeezes the circumferential inner side surface of the second connecting ring 20 along the radial direction of the second connecting ring 20, thereby preventing the second connecting ring 20 from squeezing the sleeve 2 and preventing the sleeve 2 from moving toward the direction close to the stirring shaft 1, thereby preventing the stirring shaft 1 and the sleeve 2 from directly contacting each other and causing damage to the stirring shaft 1.

[0028] In this embodiment, the connecting assembly also includes a first threaded fastener 31, a first fastening hole is provided on the sleeve 2, and a second fastening hole is provided on the second connecting ring 20. The first fastening hole and the second fastening hole both extend in the radial direction of the stirring shaft 1. The first threaded fastener 31 is passed through the second fastening hole and the first fastening hole to connect the second connecting ring 20 and the sleeve 2; wherein the first threaded fastener 31 is clearance-fitted with the second connecting ring 20 and the sleeve 2.

[0029] Specifically, the first threaded fastener 31 is passed through the second fastening hole and the first fastening hole to connect the second connecting ring 20 and the sleeve 2, thereby preventing the sleeve 2 from deforming in the radial direction of the stirring shaft 1 and causing direct contact between the sleeve 2 and the stirring shaft 1.

[0030] Specifically, the first threaded fastener 31 is a bolt.

[0031] In this embodiment, there are a plurality of first threaded fasteners 31 , and the plurality of first threaded fasteners 31 are arranged at intervals on the circumferential outer side of the second connecting ring 20 along the circumferential direction of the second connecting ring 20 .

[0032] Specifically, the plurality of first threaded fasteners 31 further ensure the connection reliability between the second connecting ring 20 and the shaft sleeve 2. There are eight first threaded fasteners 31.

[0033] In this embodiment, the connecting assembly also includes a second threaded fastener 32, a third fastening hole is provided on the first connecting ring 10, and a fourth fastening hole is provided on the second connecting ring 20. The third fastening hole and the fourth fastening hole both extend along the axial direction of the stirring shaft 1, and the second threaded fastener 32 is penetrated into the third fastening hole and the fourth fastening hole to fasten the first connecting ring 10 and the second connecting ring 20 so that the first connecting ring 10 is pressed onto the first flexible member 11.

[0034] Specifically, by passing the second threaded fastener 32 into the third fastening hole and the fourth fastening hole and tightening the second threaded fastener 32, the first connecting ring 10 and the second connecting ring 20 are ensured to be firmly connected, thereby preventing the first connecting ring 10 from moving relative to the second connecting ring 20 along the axial direction of the stirring shaft 1, causing the first connecting ring 10 to be unable to squeeze the first flexible member 11.

[0035] Specifically, the second threaded fasteners 32 are bolts, and there are eight second threaded fasteners 32 .

[0036] In this embodiment, the connecting assembly also includes a third connecting ring 40 and a second flexible member 41. The third connecting ring 40 is connected to the first connecting ring 10. The second flexible member 41 is sleeved on the stirring shaft 1 and is arranged on the side of the first connecting ring 10 away from the sleeve 2. The third connecting ring 40 is pressed on the circumferential outer side of the second flexible member 41 so that the second flexible member 41 and the stirring shaft 1 are abutted, so that the third connecting ring 40 and the stirring shaft 1 are connected.

[0037] Specifically, the third connecting ring 40 is pressed onto the circumferential outer side of the second flexible member 41 so that the second flexible member 41 and the stirring shaft 1 are abutted, so that the third connecting ring 40 and the stirring shaft 1 are connected, and the third connecting ring 40 can rotate with the stirring shaft 1. At the same time, since the third connecting ring 40 and the first connecting ring 10 are connected, the first connecting ring 10 and the stirring shaft 1 are connected, and the second connecting ring 20 and the sleeve 2 are connected to the stirring shaft 1.

[0038] Specifically, the second flexible member 41 is a flexible gasket, and the second flexible member 41 is made of polytetrafluoroethylene. The third connecting ring 40 is pressed on the circumferential outer side of the second flexible member 41, so that the second flexible member 41 is filled and squeezed between the third connecting ring 40 and the stirring shaft 1, so that the second flexible member 41 can be tightly held with the stirring shaft 1, and the second flexible member 41 is connected to the stirring shaft 1.

[0039] The utility model adds a third connecting ring 40, and fills the second flexible member 41 at the contact part between the third connecting ring 40 and the stirring shaft 1, so as to change the original hard contact between the stirring shaft 1 and the sleeve 2 into a soft contact with the second flexible member 41. At the same time, the material of the second flexible member 41 can be selected according to the process conditions such as the medium and temperature in the reactor, and can also be replaced regularly, so as to effectively avoid the hard contact between the stirring shaft and the sleeve 2, thereby reducing the possibility of damage to the glaze surface of the stirring shaft 1 and porcelain explosion caused by hard contact, and improving the working stability and safety of the enamel stirring kettle.

[0040] In this embodiment, the first connecting ring 10 includes a first ring portion 12 and a second ring portion 13 which are arranged in sequence along the axial direction of the first connecting ring 10, the diameter of the first ring portion 12 is larger than the diameter of the second ring portion 13, the third fastening hole is arranged on the first ring portion 12, the circumferential outer side surface of the second ring portion 13 is in contact with the circumferential inner side surface of the second connecting ring 20, and the axial side surface of the second ring portion 13 is pressed on the first flexible member 11 to cause the first flexible member 11 to deform.

[0041] Specifically, the second ring portion 13 is used to squeeze the first flexible member 11 so that the first flexible member 11 is deformed; the first ring portion 12 is used to connect the first connecting ring 10 and the second connecting ring 20 .

[0042] In this embodiment, the connecting assembly also includes a third fastener 33, a fifth fastening hole is provided on the third connecting ring 40, and a sixth fastening hole is provided on the first connecting ring 10. The fifth fastening hole and the sixth fastening hole both extend along the axial direction of the stirring shaft 1. The third fastener 33 penetrates into the fifth fastening hole and the sixth fastening hole to connect the third connecting ring 40 and the first connecting ring 10; wherein the third fastener 33 and the sixth fastening hole are clearance-fitted.

[0043] Specifically, since the third fastener 33 and the sixth fastening hole are clearance-fitted, when the third connecting ring 40 shakes slightly with the stirring shaft 1, the third fastener 33 will not transmit the shaking to the third connecting ring 40, thereby playing a shock-absorbing role, further preventing the third connecting ring 40 from shaking with the stirring shaft 1, thereby further preventing the sleeve 2 from shaking with the third connecting ring 40, causing the sleeve 2 to collide with the stirring shaft 1 and be damaged.

[0044] In this embodiment, the third connecting ring 40 includes two connecting ring parts, and the connecting assembly also includes a fourth threaded fastener 34. Each connecting ring part is provided with a seventh fastening hole, and each seventh fastening hole extends along the radial direction of the stirring shaft 1. The fourth threaded fastener 34 is inserted into the seventh fastening hole on the two connecting ring parts, so that the third connecting ring 40 is pressed on the circumferential outer side of the second flexible part 41.

[0045] Specifically, by passing the fourth threaded fastener 34 into the seventh fastening hole on the two connecting ring parts, the two connecting ring parts are tightly connected, avoiding relative displacement of the two connecting ring parts, avoiding the increase of the gap between the third connecting ring 40 and the second flexible part 41, and ensuring that the third connecting ring 40 is pressed on the circumferential outer side of the second flexible part 41.

[0046] Specifically, the fourth threaded fastener 34 is a bolt; there are two fourth threaded fasteners 34, and each connecting ring part is provided with two seventh fastening holes. The two fourth threaded fasteners 34 and the two seventh fastening holes are arranged in a one-to-one correspondence. By inserting each fourth threaded fastener 34 into the corresponding seventh fastening hole on the two connecting ring parts, the connection reliability of the two connecting ring parts is further guaranteed.

[0047] In this embodiment, there are a plurality of third fasteners 33 , and the plurality of third fasteners 33 are spaced apart on the third connecting ring 40 along the circumferential direction of the third connecting ring 40 .

[0048] Specifically, the plurality of third fasteners 33 further ensure the connection reliability between the third connecting ring 40 and the first connecting ring 10 .

[0049] Specifically, the third fasteners 33 are pins, and there are four or six third fasteners 33 .

[0050] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0051] The connection assembly of the utility model includes a first connection ring 10 and a first flexible member 11. The sleeve 2 is sleeved on the stirring shaft 1 and is in clearance fit with the stirring shaft 1. The first connection ring 10 is used to connect the sleeve 2 and the stirring shaft 1. The two sides of the first flexible member 11 are in contact with the first connection ring 10 and the sleeve 2 respectively. The first connection ring 10 is pressed on the first flexible member 11, so that the first flexible member 11 is deformed and squeezes the stirring shaft 1 along the radial direction of the stirring shaft 1, so that the first flexible member 11 can squeeze the stirring shaft 1 along the radial direction of the stirring shaft 1, avoiding the stirring shaft 1 from moving toward the direction close to the sleeve 2 when shaking, thereby avoiding direct contact between the stirring shaft 1 and the sleeve 2, resulting in damage to the stirring shaft 1, thereby solving the problem of easy damage to the enameled stirring shaft at the fitting point of the open sleeve and the enameled stirring shaft in the prior art, effectively avoiding hard contact between the stirring shaft 1 and the sleeve 2, thereby reducing the possibility of damage to the glaze surface of the stirring shaft 1 and porcelain explosion caused by hard contact, and improving the working stability and safety of the enameled stirring kettle.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0054] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A connecting assembly for connecting a stirring shaft (1) and a shaft sleeve (2), wherein the shaft sleeve (2) is sleeved on the stirring shaft (1) and has a clearance fit with the stirring shaft (1), characterized in that: The connection component comprises: A first connecting ring (10) and a first flexible member (11), wherein the first connecting ring (10) is used to connect the shaft sleeve (2) and the stirring shaft (1); along the axial direction of the stirring shaft (1), the first connecting ring (10), the first flexible member (11) and the shaft sleeve (2) are sequentially sleeved on the stirring shaft (1); two sides of the first flexible member (11) are in contact with the first connecting ring (10) and the shaft sleeve (2) respectively; the first connecting ring (10) is pressed onto the first flexible member (11) so that the first flexible member (11) is deformed along the radial direction of the stirring shaft (1) and squeezes the stirring shaft (1); wherein the first connecting ring (10) and the stirring shaft (1) are clearance-fitted.

2. The connection assembly according to claim 1, characterized in that: The connecting assembly also includes a second connecting ring (20), the first connecting ring (10) and the second connecting ring (20) are connected, the second connecting ring (20) and the shaft sleeve (2) are connected, the circumferential inner side surface of the second connecting ring (20) contacts the circumferential outer side surface of the first connecting ring (10) and the circumferential outer side surface of the shaft sleeve (2), and when the first flexible member (11) is deformed, the first flexible member (11) squeezes the circumferential inner side surface of the second connecting ring (20).

3. The connection assembly according to claim 2, characterized in that: The connecting assembly further comprises a first threaded fastener (31), a first fastening hole is provided on the shaft sleeve (2), and a second fastening hole is provided on the second connecting ring (20), the first fastening hole and the second fastening hole both extend in the radial direction of the stirring shaft (1), and the first threaded fastener (31) is passed through the second fastening hole and the first fastening hole so as to connect the second connecting ring (20) and the shaft sleeve (2); wherein the first threaded fastener (31) is clearance-fitted with the second connecting ring (20) and the shaft sleeve (2).

4. The connection assembly according to claim 3, characterized in that: There are a plurality of first threaded fasteners (31), and the plurality of first threaded fasteners (31) are arranged at intervals on the circumferential outer side of the second connecting ring (20) along the circumferential direction of the second connecting ring (20).

5. The connection assembly according to claim 2, characterized in that: The connecting assembly further comprises a second threaded fastener (32), a third fastening hole is provided on the first connecting ring (10), and a fourth fastening hole is provided on the second connecting ring (20), the third fastening hole and the fourth fastening hole both extend along the axial direction of the stirring shaft (1), and the second threaded fastener (32) penetrates into the third fastening hole and the fourth fastening hole so that the first connecting ring (10) and the second connecting ring (20) are fastened and connected, so that the first connecting ring (10) is pressed onto the first flexible member (11).

6. The connection assembly according to claim 2, characterized in that: The connecting assembly further comprises a third connecting ring (40) and a second flexible member (41), wherein the third connecting ring (40) is connected to the first connecting ring (10), the second flexible member (41) is sleeved on the stirring shaft (1) and arranged on a side of the first connecting ring (10) away from the shaft sleeve (2), and the third connecting ring (40) is pressed on the circumferential outer side of the second flexible member (41) so that the second flexible member (41) and the stirring shaft (1) are in contact with each other, so that the third connecting ring (40) and the stirring shaft (1) are connected.

7. The connection assembly according to claim 5, characterized in that: The first connecting ring (10) comprises a first ring portion (12) and a second ring portion (13) which are sequentially arranged along the axial direction of the first connecting ring (10), the diameter of the first ring portion (12) is larger than the diameter of the second ring portion (13), the third fastening hole is arranged on the first ring portion (12), the circumferential outer side surface of the second ring portion (13) is in contact with the circumferential inner side surface of the second connecting ring (20), and the axial side surface of the second ring portion (13) is pressed on the first flexible member (11) to cause the first flexible member (11) to deform.

8. The connection assembly according to claim 6, characterized in that: The connecting assembly also includes a third fastener (33), a fifth fastening hole is provided on the third connecting ring (40), and a sixth fastening hole is provided on the first connecting ring (10), the fifth fastening hole and the sixth fastening hole both extend along the axial direction of the stirring shaft (1), and the third fastener (33) penetrates into the fifth fastening hole and the sixth fastening hole to connect the third connecting ring (40) and the first connecting ring (10); wherein the third fastener (33) and the sixth fastening hole are clearance-fitted.

9. The connection assembly according to claim 8, characterized in that: The third connecting ring (40) includes two connecting ring parts, and the connecting assembly also includes a fourth threaded fastener (34). Each of the connecting ring parts is provided with a seventh fastening hole, and each of the seventh fastening holes extends along the radial direction of the stirring shaft (1). By inserting the fourth threaded fastener (34) into the seventh fastening holes on the two connecting ring parts, the third connecting ring (40) is pressed onto the circumferential outer side of the second flexible member (41).

10. The connection assembly according to claim 8, characterized in that There are a plurality of third fasteners (33), and the plurality of third fasteners (33) are spaced apart on the third connecting ring (40) along the circumferential direction of the third connecting ring (40).

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