Auxiliary supporting structure of stirring shaft

Abstract

The auxiliary supporting structure comprises a supporting assembly, the mounting end of the supporting assembly is fixedly arranged, and the supporting end of the supporting assembly is matched with the stirring shaft; in the rotating process of the stirring shaft, the supporting assembly is suitable for applying supporting force pointing to the mounting axis to the stirring shaft in the circumferential direction of the stirring shaft through the interaction of the mounting end and the supporting end. The stirring shaft has the beneficial effects that the stirring shaft is ensured to be centered in the rotating process through the radial supporting force of the supporting assembly, so that the bearing abrasion of the stirring shaft in the rotating process can be effectively reduced, the service life of the stirring shaft is prolonged, and the use safety of the stirring shaft is improved. And when the supporting assembly adopts the inner magnetic part and the outer magnetic part, sanitary magnetic stirring can be realized.

Description

Technical Field

[0001] The present application relates to the field of stirring technology, and in particular to an auxiliary support structure of a stirring shaft. Background Art

[0002] In the traditional mixing process, the mixing shaft is generally installed in the tank body through the bearing, and then driven by the motor to rotate to mix the materials in the tank evenly. However, in the actual mixing process, due to the uneven initial state of the material, the mixing shaft is subjected to uneven force during the actual mixing process, which will aggravate the wear of the bearing in the long run and may even cause the mixing shaft to deform and bend. Utility Model Content

[0003] One of the objects of the present application is to provide an auxiliary support structure for a stirring shaft that can solve at least one of the defects in the above-mentioned background technology.

[0004] In order to achieve at least one of the above-mentioned purposes, the technical solution adopted in the present application is: an auxiliary support structure of a stirring shaft, comprising a support assembly, the mounting end of the support assembly is fixedly arranged, and the support end of the support assembly cooperates with the stirring shaft; during the rotation of the stirring shaft, the support assembly is suitable for applying a supporting force to the stirring shaft pointing to the mounting axis along the circumferential direction of the stirring shaft through the interaction between the mounting end and the support end.

[0005] Preferably, there is at least one supporting assembly, and a plurality of supporting assemblies are spaced apart along the length direction of the stirring shaft.

[0006] Preferably, the supporting assembly includes an inner magnetic part and an outer magnetic part; the inner magnetic part is fixedly mounted on the stirring shaft as a supporting end, and the outer magnetic part is sleeved on the outside of the inner magnetic part as a mounting end and fixedly mounted; a magnetic repulsion is set between the inner magnetic part and the outer magnetic part, and the repulsive force generated by the two is evenly distributed along the circumferential direction of the stirring shaft.

[0007] Preferably, the stirring shaft comprises a rotating shaft, and the inner magnetic member is fixedly mounted on the rotating shaft.

[0008] Preferably, a stabilizing ring is coaxially fixedly mounted on the stirring shaft, and the inner magnetic component is fixedly mounted on the outer side of the stabilizing ring.

[0009] Preferably, the stirring shaft comprises a rotating shaft and a stirring blade mounted on the rotating shaft, and the stabilizing ring is fixedly mounted on the stirring blade.

[0010] Preferably, the inner magnetic component and the outer magnetic component are spaced apart from each other.

[0011] Preferably, the inner magnetic component and the outer magnetic component are arranged in close contact with each other.

[0012] Preferably, the inner magnetic member and the outer magnetic member are both annular.

[0013] Preferably, the inner magnetic part is arc-shaped and a plurality of them are arranged at equal intervals along the circumferential direction, and the outer magnetic part is annular; or, the inner magnetic part is annular, and the outer magnetic part is arc-shaped and a plurality of them are arranged at equal intervals along the circumferential direction.

[0014] Compared with the prior art, the beneficial effects of this application are:

[0015] The radial support force of the support assembly ensures that the stirring shaft remains centered during rotation, which can effectively reduce the bearing wear of the stirring shaft during rotation, thereby increasing the service life and safety of the stirring shaft. And when the support assembly uses internal and external magnetic parts, sanitary magnetic stirring can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure in which the inner magnetic part is installed on the rotating shaft in this application.

[0017] Figure 2 This is a schematic diagram of the structure in which the inner magnetic part is installed on the stabilizing ring in this application. Figure 1 .

[0018] Figure 3 This is a schematic diagram of the structure in which the inner magnetic part is installed on the stabilizing ring in this application. Figure 2 .

[0019] Figure 4 This is a schematic diagram of the structure in which the inner magnetic part and the outer magnetic part are spaced apart in the present application.

[0020] Figure 5 This is a schematic diagram of the structure in which the inner magnetic part and the outer magnetic part are fitted together in this application.

[0021] Figure 6 This is a schematic diagram of the structure in which the outer magnetic component of the present application adopts a segmented structure to cooperate with the inner magnetic component of the annular structure.

[0022] In the figure: a stirring shaft 1, a rotating shaft 11, a stirring blade 12, a stabilizing ring 13, an inner magnetic part 21, an outer magnetic part 22, a supporting ring 23, and a connecting rod 24. DETAILED DESCRIPTION

[0023] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that in the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0024] In the description of the present application, it should be noted that directional words, such as the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of narrating the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific scope of protection of the present application.

[0025] It should be noted that the terms "first", "second", etc. in the description and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0026] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be connected, detachably connected, or integrated; it can be mechanically connected or electrically connected; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0028] The terms "including" and "having" and any variations thereof in the specification and claims of the present application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0029] One of the preferred embodiments of the present application is as follows: Figures 1 to 6 As shown, an auxiliary support structure of a stirring shaft includes a support assembly. The support assembly is provided with a mounting end and a support end. The mounting end of the support assembly needs to be fixedly arranged. Since the stirring shaft 1 is mainly used for stirring in a reactor, the mounting end of the support assembly can be fixedly installed on the reactor body (not shown). There are many specific fixed installation methods, and technicians in this field can choose according to actual needs, so they will not be elaborated in detail here. The support end of the support assembly cooperates with the stirring shaft 1, so that during the process of rotating and stirring the stirring shaft 1, the support assembly can apply a supporting force pointing to the mounting axis to the stirring shaft 1 along the circumferential direction of the stirring shaft 1 through the interaction between the support end and the mounting end.

[0030] Specifically, the support assembly can generate multiple support forces through the interaction between the support end and the mounting end. These support forces can be evenly distributed along the circumferential direction of the stirring shaft 1, and the extension direction of the support force is the radial direction of the stirring shaft 1, so that the combined force of these support forces can be concentrated on the mounting axis position of the stirring shaft 1. During the normal stirring and rotation of the stirring shaft 1, these support forces can form a stable support field. When the use state of the stirring shaft 1 is abnormal, such as oscillating, the stirring shaft 1 will oscillate in the direction where the stability of the support field is destroyed, which will cause the bearing used to install the stirring shaft 1 to be unstable and the wear will be aggravated. At this time, the interaction between the mounting end and the support end of the support assembly will increase the position where the relative motion of the stirring shaft 1 changes locally, that is, the support field can resist the destruction of stability, so the support field can suppress abnormal states such as the oscillating motion of the stirring shaft 1, so that the stirring shaft 1 can tend to a stable circular rotation in a vertical alignment, thereby effectively reducing the wear of the bearing used to install the stirring shaft 1.

[0031] It is understandable that there are many specific structures of the support assembly that can achieve the above functions, such as a support assembly with an elastic auxiliary support structure, and a support assembly with a specific magnetic auxiliary support structure. Considering that the support assembly of the elastic auxiliary support structure may need to be in elastic contact with the stirring shaft 1, this may have a certain impact on the environmental sanitation requirements in the reactor, while the magnetic auxiliary support structure may not need to be in contact, and timely contact can also achieve extremely small friction, which can effectively improve the environmental sanitation in the reactor and ensure that the reactor can achieve sanitary magnetic stirring. For ease of understanding, the support assembly of the magnetic auxiliary support structure will be described in detail below. For the specific structure of the support assembly of the elastic auxiliary support structure, the support assembly of the magnetic auxiliary support structure can be referred to the support assembly of the magnetic auxiliary support structure, except that the magnetic field is replaced by the elastic field formed by the spring.

[0032] In this embodiment, Figures 1 to 6 As shown, the support assembly includes an inner magnetic member 21 and an outer magnetic member 22. The inner magnetic member 21 can be fixedly installed on the stirring shaft 1 as the support end of the support assembly, and the outer magnetic member 22 can be sleeved on the outer side of the inner magnetic member 21 as the mounting end of the support assembly and fixedly installed. The inner magnetic member 21 and the outer magnetic member 22 are arranged to repel each other magnetically, and the repulsive force generated by the two is evenly distributed along the circumferential direction of the stirring shaft 1.

[0033] It can be understood that the magnetic poles of the inner magnetic member 21 and the outer magnetic member 22 are the same, which can be the same N pole or the same S pole; thus, a repulsive magnetic field can be generated between the inner magnetic member 21 and the outer magnetic member 22 in the circumferential direction of the stirring shaft 1. Since the outer magnetic member 22 is fixedly arranged, its position can be regarded as unchanged, and the magnetic field between the inner magnetic member 21 and the outer magnetic member 22 will constrain the deflection of the stirring shaft 1 during the rotation of the stirring shaft 1, so that the stirring shaft 1 can maintain stable rotation in vertical alignment.

[0034] Specifically, when the use state of the stirring shaft 1 is abnormal, the inner magnetic part 21 will perform synchronous yaw motion with the stirring shaft 1, which will cause the distance between the inner magnetic part 21 and the outer magnetic part 22 to change. Analyzing a single yaw of the stirring shaft 1, a part of the inner magnetic part 21 will approach the outer magnetic part 22, and the area on the opposite side of the inner magnetic part 21 will move away from the outer magnetic part 22. For the area where the inner magnetic part 21 and the outer magnetic part 22 are close, the repulsive force between the two is intensified, so that the inner magnetic part 21 has a tendency to move away from the outer magnetic part 22 for resetting; while for the area where the inner magnetic part 21 and the outer magnetic part 22 are far away, the repulsive force between the two becomes weak, and the ability of the inner magnetic part 21 to resist resetting in the previous close area becomes weak. Through the combination of these two areas, it can be ensured that when the stirring shaft 1 yaws, the inner magnetic part 21 has a strong resetting ability, thereby ensuring that the stirring shaft 1 has good stability.

[0035] It should be known that the number of support assemblies can be one or more, and can be set according to actual needs. For example, for a shorter stirring shaft 1, the deflection is better, and only a small number of support assemblies, such as one or two, are required. For a longer stirring shaft 1, the deflection is poor, and multiple support assemblies, such as two or three, are often required; the multiple support assemblies can be arranged at equal intervals along the length direction of the stirring shaft 1.

[0036] In this embodiment, based on the specific structure of the stirring shaft 1, the specific installation method of the support assembly is different. For the sake of easy understanding, two specific examples will be used for detailed description below.

[0037] Example 1: Figure 1 As shown, the stirring shaft 1 includes a rotating shaft 11, which is rotatably mounted on the kettle body through a bearing, and the rotating shaft 11 can be connected to a driving source such as a motor to transmit power; the internal magnetic part 21 can be fixedly mounted on the rotating shaft 11. The specific installation method of the internal magnetic part 21 can be directly embedded, welded or bonded on the rotating shaft 11, or the internal magnetic part 21 can be embedded, welded or bonded on the mounting sleeve, and then the mounting sleeve is tightly sleeved on the rotating shaft 11.

[0038] For the installation of the external magnetic member 22, as Figures 4 to 6 As shown, a support ring 23 concentric with the installation axis of the stirring shaft 1 is installed on the outer side of the inner magnetic part 21, and the support ring 23 can be fixedly connected to the kettle body through the outer connecting rod 24. The outer magnetic part 22 can be fixedly installed on the inner side of the support ring 23 facing the inner magnetic part 21 by inlaying, welding or bonding.

[0039] Example 2: Figure 2 and Figure 3 As shown, a stabilizing ring 13 is coaxially fixedly mounted on the stirring shaft 1, and the inner magnetic member 21 can be fixedly mounted on the outer side of the stabilizing ring 13 by direct embedding, welding or bonding. The specific installation method of the outer magnetic member 22 is similar to that of Example 1, so it will not be described in detail here.

[0040] It should be noted that, for large reactors, a stabilizing ring 13 is generally installed on the stirring shaft 1. The stabilizing ring 13 can balance the force during the rotation and stirring of the stirring shaft 1, and the force around the stabilizing ring 13 is uniform when rotating. During the rotation of the stirring shaft 1, a flow field will be generated in the reactor body. Once the center of rotation is offset, the flow field around the stabilizing ring 13 can generate a reaction force to pull the stirring shaft 1 back to the center position to suppress the deflection of the stirring shaft 1. That is, the stabilizing ring 13 can suppress the deflection of the stirring shaft 1, and the present embodiment adds a support assembly on the basis of the stabilizing ring 13, which can further improve the ability to suppress the deflection of the stirring shaft 1.

[0041] Specifically, the stirring shaft 1 includes a rotating shaft 11 and a stirring blade 12 mounted on the rotating shaft 11, and the stabilizing ring 13 can be fixedly mounted on the rotating shaft 11 or fixedly mounted on the stirring blade 12. Considering that the larger disturbance position of the stirring shaft 1 is located near the stirring blade 12, the stabilizing ring 13 can be preferably installed on the stirring blade 12. There are many specific connection methods between the stabilizing ring 13 and the stirring blade 12. For the sake of easy understanding, two specific methods will be described in detail below.

[0042] Connection method 1: Figure 2 As shown, the stabilizing ring 13 can be fixedly installed on the outside of the stirring blade 12. The specific installation method between the stabilizing ring 13 and the stirring blade 12 can be welding or plug-in, etc., which can be selected according to the actual needs of technical personnel in this field.

[0043] Connection method 2: Figure 3 As shown, the stabilizing ring 13 can be fixedly installed on the lower end of the stirring blade 12, and the specific installation method between the stabilizing ring 13 and the stirring blade 12 is preferably welding.

[0044] In this embodiment, based on the basic principle of magnetic assistance, such as Figure 4As shown, the inner magnetic part 21 and the outer magnetic part 22 can be spaced apart; the specific spacing distance is based on ensuring that the magnetic field between the two has sufficient auxiliary support capability for the stirring shaft 1, and the specific value of the spacing distance is mainly related to the magnetic field strength of the inner magnetic part 21 and the outer magnetic part 22. By setting the spacing between the inner magnetic part 21 and the outer magnetic part 22, it is possible to ensure contactless magnetic auxiliary support for the stirring shaft 1, thereby achieving the suppression of the deflection of the stirring shaft 1 while effectively improving the sanitary environment in the reactor to meet the sanitary requirements. Of course, as Figure 5 As shown, the inner magnetic member 21 and the outer magnetic member 22 can also be fitted together. Since the magnetic field between the two is a repulsive field, the contact force generated by the inner magnetic member 21 and the outer magnetic member 22 when fitting together is extremely small, that is, the friction force generated by the two during the relative rotation is extremely small. The fitting between the two can achieve the best effect of suppressing the deflection of the stirring shaft 1, and the extremely small friction between the two can basically meet the environmental requirements of the sanitary level.

[0045] In this embodiment, there are mainly two specific arrangements of the inner magnetic member 21 and the outer magnetic member 22 , which will be described in detail below through two specific examples.

[0046] Arrangement method 1: Figure 4 and Figure 5 As shown, the inner magnetic member 21 and the outer magnetic member 22 are both annular. In this way, when the inner magnetic member 21 rotates relative to the outer magnetic member 22, the inner magnetic member 21 and the outer magnetic member 22 generate mutual repulsive force at any position.

[0047] Arrangement method 2: Figure 6 As shown, the inner magnetic part 21 is arc-shaped and is arranged in multiple numbers at equal intervals along the circumferential direction, and the outer magnetic part 22 is annular. In this way, during the rotation of the inner magnetic part 21 relative to the outer magnetic part 22, any inner magnetic part 21 can generate a repulsive force that interacts with the outer magnetic part 22 at any position. Of course, the inner magnetic part 21 can also be arranged in an annular shape, and the outer magnetic part 22 can be arranged in an arc shape and be arranged in multiple numbers at equal intervals along the circumferential direction. In this way, during the rotation of the inner magnetic part 21 relative to the outer magnetic part 22, any outer magnetic part 22 can generate a repulsive force that interacts with the inner magnetic part 21 at any position.

[0048] It should be known that the inner magnetic part 21 and the outer magnetic part 22 can be an integral structure, or a component structure composed of multiple magnetic steels. That is, whether it is an annular inner magnetic part 21 and an outer magnetic part 22, or an arc-shaped inner magnetic part 21 and an outer magnetic part 22, they can be directly processed from a whole piece of magnetic steel. It is also possible to arrange multiple magnetic steels to form an annular or arc-shaped inner magnetic part 21 and an outer magnetic part 22 of corresponding structure. The specific structure of the inner magnetic part 21 and the outer magnetic part 22 can be selected according to the actual needs of technicians in this field.

[0049] The above describes the basic principles, main features and advantages of the present application. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and the specification only describe the principles of the present application. The present application may have various changes and improvements without departing from the spirit and scope of the present application, and these changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the attached claims and their equivalents.

Claims

1. An auxiliary support structure for a stirring shaft, characterized in that: It comprises a support assembly, the mounting end of which is fixedly arranged, and the support end of which cooperates with the stirring shaft; During the rotation of the stirring shaft, the supporting assembly is suitable for applying a supporting force directed toward the mounting axis to the stirring shaft along the circumferential direction of the stirring shaft through the interaction between the mounting end and the supporting end.

2. The auxiliary support structure of the stirring shaft according to claim 1, characterized in that: The number of the supporting assembly is at least one, and a plurality of the supporting assemblies are arranged at intervals along the length direction of the stirring shaft.

3. The auxiliary support structure of the stirring shaft according to claim 2, characterized in that: The support assembly comprises: An inner magnetic member; the inner magnetic member is fixedly mounted on the stirring shaft as a supporting end; and An outer magnetic member; the outer magnetic member is sleeved on the outer side of the inner magnetic member as a mounting end and is fixedly mounted; The inner magnetic member and the outer magnetic member are arranged to repel each other magnetically, and the repulsive force generated by the two is evenly distributed along the circumferential direction of the stirring shaft.

4. The auxiliary support structure of the stirring shaft according to claim 3, characterized in that: The stirring shaft comprises a rotating shaft, and the inner magnetic component is fixedly mounted on the rotating shaft.

5. The auxiliary support structure of the stirring shaft according to claim 3, characterized in that: A stabilizing ring is fixedly mounted concentrically on the stirring shaft, and the inner magnetic part is fixedly mounted on the outer side of the stabilizing ring.

6. The auxiliary support structure of the stirring shaft according to claim 5, characterized in that: The stirring shaft comprises a rotating shaft and a stirring blade installed on the rotating shaft, and the stabilizing ring is fixedly installed on the stirring blade.

7. The auxiliary support structure of the stirring shaft according to claim 3, characterized in that: The inner magnetic component and the outer magnetic component are spaced apart from each other.

8. The auxiliary support structure of the stirring shaft according to claim 3, characterized in that: The inner magnetic component and the outer magnetic component are arranged in close contact with each other.

9. The auxiliary support structure of the stirring shaft according to claim 3, characterized in that: The inner magnetic component and the outer magnetic component are both ring-shaped.

10. The auxiliary support structure of the stirring shaft according to claim 3, characterized in that: The inner magnetic component is arc-shaped and multiple components are arranged at equal intervals along the circumferential direction, and the outer magnetic component is annular; or, the inner magnetic component is annular, and the outer magnetic component is arc-shaped and multiple components are arranged at equal intervals along the circumferential direction.

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