Blade-adjustable stirrer

Abstract

The utility model relates to the technical field of material stirring, in particular to a paddle-adjustable stirrer which comprises a hub and at least one paddle, and one end of each paddle is fixedly connected to the circumferential side wall of the hub; and the length size of the paddle in the radial direction of the hub and / or the shape of the paddle can be adjusted. The length size of the paddle in the radial direction of the hub can be adjusted, in the actual use process, the overall length size of the paddle can be adjusted according to needs so as to achieve a better stirring effect, and meanwhile, the stirring power can be matched with the driving power by adjusting the length size of the paddle; the shape of the paddle can be adjusted, and in the actual use process, the overall shape of the paddle can be adjusted according to needs, so that a better stirring effect is achieved, and the paddle is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of material stirring, and specifically to a stirrer with adjustable blades. Background Technique

[0002] Theoretically, the operation of uniformly mixing materials in any state (solid, liquid, gas, and semi-liquid) is called mixing. However, conventionally, the mixing of solid materials or the humidification of solid materials is often called mixing, while the mixing operation of solid, liquid, or gaseous materials is called stirring.

[0003] Stirring and mixing operations are one of the most widely applied process unit operations, and are widely used in industries such as chemical engineering, pharmaceuticals, food, daily chemicals, and wastewater treatment as the power source for mass transfer and heat transfer. In recent years, stirring and mixing technologies have developed rapidly, and stirring and mixing equipment is developing towards large-scale, standardized, energy-efficient, mechatronic, intelligent, and specialized directions. Under such circumstances, it becomes very important for technicians to draw on existing experience, master new changes, correctly design and select operating and mixing equipment for operations under different process conditions, and make it meet the requirements of safety, reliability, high efficiency, and energy conservation.

[0004] The stirring power formula is P = N p ρn 3 d 5 , and the factors affecting the stirring power include: the geometric dimensions and rotational speed of the stirrer, the structure of the stirring container, the characteristics of the stirring medium, gravitational acceleration, etc. The power number is determined through experiments under standard operating conditions (standard container size, standard stirrer size, standard medium). In actual industrial applications, there are differences between the stirring container, stirrer, medium and the standard operating conditions, and this difference is real but immeasurable. Although a power number correction coefficient is introduced in engineering to correct these differences. However, in actual engineering applications, limited by the sample size and the engineering experience of designers, the determined stirring power is often not accurate enough, either being too conservative with a large safety margin or being too radical with the motor being overloaded.

[0005] It is found through the stirring power formula that the biggest factors affecting the stirring power are the stirrer blade diameter and rotational speed. When the blade diameter is reduced by 5% - 10%, the stirring power is reduced by about 23% - 40%; when the blade diameter is increased by 5% - 10%, the stirring power is increased by about 27% - 60%. In view of the above problems, the purpose of the utility model is to provide a stirrer with adjustable blades, which can, on the basis of a selected driving power and basically meeting the requirements of mass transfer, heat transfer, dissolution, and mixing of the medium, achieve the matching of the stirring power and the driving power by adjusting the blade diameter of the stirrer. Content of the Utility Model

[0006] In view of the above problems existing in the prior art, the present utility model provides a stirrer with adjustable blades.

[0007] In order to solve the above technical problems, the present utility model is solved by the following technical solutions:

[0008] A stirrer with adjustable blades, which includes a hub and at least one blade. One end of the blade is fixedly connected to the circumferential side wall of the hub; the length dimension of the blade in the radial direction of the hub and / or the shape of the blade itself is adjustable.

[0009] Preferably, the blade includes a fixed part and an adjusting part; one end of the fixed part is fixedly connected to the circumferential side wall of the hub, and the other end is detachably connected to the adjusting part;

[0010] The installation position between the adjusting part and the fixed part is adjustable to realize the adjustment of the length dimension and / or the shape of the blade.

[0011] Preferably, a plurality of first connection holes are arranged on the fixed part; a plurality of second connection holes are arranged on the adjusting part;

[0012] The adjusting part is matched with the first connection hole through a fastening bolt with the second connection hole to realize the adjustment of the length dimension and / or the shape of the blade.

[0013] Preferably, the fixed part and the adjusting part are connected by at least two of the fastening bolts.

[0014] Preferably, at least one reinforcing rib is arranged between the fixed part and the hub.

[0015] Preferably, a preset space is provided between the end of the reinforcing rib far from the hub and the fixed part;

[0016] In the assembled state, at least a part of the adjusting part is clamped in the preset space.

[0017] Preferably, a plurality of hemispherical bumps are arranged on the side wall of the fixed part and / or the side wall of the preset space; a plurality of grooves capable of allowing the bumps to extend into are arranged on the adjusting part.

[0018] Preferably, in the assembled state, at least a part of the adjusting part is clamped in the preset space in an interference fit manner.

[0019] The present utility model has at least the following beneficial effects:

[0020] 1. The length dimension of the blade in the radial direction of the hub in this application is adjustable. During actual use, the overall length dimension of the blade can be adjusted according to needs to achieve a better stirring effect. At the same time, by adjusting the length dimension of the blade, the matching of the stirring power and the driving power can be realized.

[0021] 2. The shape of the blade in this application is adjustable. During actual use, the overall shape of the blade can be adjusted according to needs to achieve a better stirring effect and facilitate use. Description of the Drawings

[0022] Figure 1 Shows the first schematic diagram of the stirrer in some embodiments of this application;

[0023] Figure 2 Shows the second schematic diagram of the stirrer in some embodiments of this application;

[0024] Figure 3 Shows a partial cross-sectional view of the adjusting part partially extending into the preset space in some embodiments of this application;

[0025] Figure 4 Shows a schematic diagram of the adjusting part partially extending into the preset space and the convex block extending into the hemispherical groove in some embodiments of this application;

[0026] Figure 5 Shows Figure 4 The partial enlarged view at A in;

[0027] Figure 6 Shows a schematic diagram of the adjusting part with a hemispherical groove in some embodiments of this application;

[0028] Figure 7 Shows a schematic diagram of the adjusting part partially extending into the preset space and the convex block extending into the strip-shaped groove in some embodiments of this application;

[0029] Figure 8 Shows Figure 7 The partial enlarged view at B in;

[0030] Figure 9 Shows a schematic diagram of the adjusting part with a strip-shaped groove in some embodiments of this application.

[0031] The names of the parts referred to by each numerical label in the drawings are as follows:

[0032] 100, hub; 200, blade; 210, fixing part; 211, first connection hole; 212, convex block; 220, adjusting part; 221, second connection hole; 222, groove; 300, fastening bolt; 400, reinforcing rib; 410, preset space. Detailed implementation mode

[0033] To further understand the content of the present utility model, the present utility model will be described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only for explaining the present utility model and not for limiting it.

[0034] Embodiment 1

[0035] As Figure 1-2 shown, in this embodiment, a stirrer with adjustable blades is provided, which includes a hub 100 and at least one blade 200. Wherein, one end of the blade 200 is fixedly connected to the circumferential side wall of the hub 100, and the other end of the blade 200 extends along the radial direction of the hub 100, so that the blade 200 has a certain length dimension in the radial direction of the hub 100. In actual use, the hub 100 can be connected to an external driving motor, so that the hub 100 can rotate in the circumferential direction under the drive of the motor, and the blade 200 will also be driven to rotate synchronously during the rotation of the hub 100. Through the movement of the blade 200, a certain stirring effect can be achieved.

[0036] Furthermore, the length dimension of the blade 200 in the radial direction of the hub 100 in this embodiment is adjustable. During actual use, the overall length dimension of the blade 200 can be adjusted according to needs to achieve a better stirring effect. At the same time, by adjusting the length dimension of the blade 200, the matching of the stirring power and the driving power can be realized.

[0037] Furthermore, the shape of the blade 200 itself in this embodiment is adjustable. During actual use, the overall shape of the blade 200 can be adjusted according to needs to achieve a better stirring effect and facilitate use.

[0038] In some embodiments, the blade 200 includes a fixed part 210 and an adjusting part 220. Wherein, one end of the fixed part 210 is fixedly connected to the circumferential side wall of the hub 100, and the other end of the fixed part 210 is connected to the adjusting part 220 in a detachable manner.

[0039] It can be understood that since the adjusting part 220 can be detached from the fixed part 210, therefore, according to actual use needs, adjusting parts 220 with different length dimensions can be installed on the fixed part 210, so that blades 200 with different length dimensions can be formed to achieve the purpose of adjusting the length dimension of the blade 200, and the matching of the stirring power and the driving power can be better realized.

[0040] Of course, since the adjusting part 220 can be detached from the fixing part 210, adjusting parts 220 with different shapes can also be installed on the fixing part 210, enabling the formation of blades 200 with different shapes to achieve a better stirring effect and facilitate use.

[0041] Furthermore, on the basis that the adjusting part 220 is detachably connected to the fixing part 210, the installation position between the adjusting part 220 and the fixing part 210 can also be adjusted. At this time, it is possible to adjust the overall length dimension of the blade 200 without replacing the adjusting part 220. Only the relative installation position between the adjusting part 220 and the fixing part 210 needs to be adjusted. Of course, by adjusting the installation position between the adjusting part 220 and the fixing part 210 so that the adjusting part 220 and the fixing part 210 form a certain angle, the shape of the blade 200 itself can also be changed. That is, when the relative installation position between the adjusting part 220 and the fixing part 210 changes, at least one of the length dimension of the blade 200 and the shape of the blade 200 itself will change.

[0042] In some embodiments, a plurality of first connection holes 211 are arranged on the fixing part 210, and a plurality of second connection holes 221 are arranged on the adjusting part 220. The adjusting part 220 and the fixing part 210 are installed and connected by inserting fastening bolts 300 into the first connection holes 211 and the second connection holes 221.

[0043] Since there are a plurality of first connection holes 211 on the fixing part 210, the first connection holes 211 at different positions on the fixing part 210 cooperate with the second connection holes 221 through the fastening bolts 300, which can preferably realize the installation connection of the adjusting part 220 and the fixing part 210 at different installation positions. At the same time, since there are a plurality of second connection holes 221 on the adjusting part 220, the second connection holes 221 at different positions on the adjusting part 220 cooperate with the first connection holes 211 through the fastening bolts 300, which can preferably realize the installation connection of the fixing part 210 and the adjusting part 220 at different installation positions.

[0044] It can be understood that the cooperation of the first connection holes 211 at different positions with the same second connection hole 221, the cooperation of the second connection holes 221 at different positions with the same first connection hole 211, and the cooperation of the first connection holes 211 at different positions with the second connection holes 221 at different positions can all preferably realize the change of the length dimension of the overall blade 200, thereby facilitating adjustment and use, and preferably realizing the matching of the stirring power and the driving power.

[0045] Further, during the process of fixedly connecting the adjusting part 220 and the fixing part 210 by the fastening bolt 300, before the fixed connection is achieved, the adjusting part 220 can be rotated along the circumferential direction of the fastening bolt 300, so that the angle between the adjusting part 220 and the fixing part 210 changes. The change in the angle between the adjusting part 220 and the fixing part 210 also causes the shape of the overall blade 200 to change. Then, the fastening bolt 300 is tightened to fix the relative positions between the adjusting part 220 and the fixing part 210.

[0046] In some embodiments, the fixing part 210 and the adjusting part 220 are connected by at least two fastening bolts 300, which can preferably improve the stability of the overall structure after the fixing part 210 and the adjusting part 220 are installed, and prevent the relative positions between the adjusting part 220 and the fixing part 210 from shifting.

[0047] During the process of installing and connecting the fixing part 210 and the adjusting part 220, first, a certain second connection hole 221 on the adjusting part 220 is aligned with a certain first connection hole 211 on the fixing part 210. Then, the fastening bolt 300 is inserted into the first connection hole 211 and the second connection hole 221. After that, the angle between the fixing part 210 and the adjusting part 220 is adjusted. Finally, the fastening bolt 300 is tightened to complete the process of installing and connecting the fixing part 210 and the adjusting part 220 by one fastening bolt 300. Before the above-mentioned fastening bolt 300 is tightened, the adjusting part 220 is rotated around the fastening bolt 300 so that another second connection hole 221 on the adjusting part 220 is aligned with another first connection hole 211 on the fixing part 210. Then, another fastening bolt 300 is inserted into the corresponding first connection hole 211 and second connection hole 221. After that, the two fastening bolts 300 are tightened to complete the process of installing and connecting the fixing part 210 and the adjusting part 220 by two fastening bolts 300. Of course, more than two fastening bolts 300 can also be used to fixedly connect the fixing part 210 and the adjusting part 220, and no special limitation is made in this regard.

[0048] It can be understood that through the installation and connection of at least two fastening bolts 300, the stability of the installation and connection between the fixing part 210 and the adjusting part 220 can be preferably improved.

[0049] Specifically, by designing the layout pattern and interval distance of the first connection holes 211 on the fixing part 210, and by designing the layout pattern and interval distance of the second connection holes 221 on the adjusting part 220, on the basis of using at least two fastening bolts 300 for installation and connection, it is also possible to preferably adjust at least one of the length dimension of the overall blade 200 and the shape of the overall blade 200, so as to achieve the purpose of convenient use.

[0050] In some embodiments, at least one reinforcing rib 400 is provided between the fixing portion 210 and the wheel hub 100. Specifically, part of the reinforcing rib 400 is fixedly connected to the circumferential side wall of the wheel hub 100, and part of the reinforcing rib 400 is fixedly connected to the outer side wall of the fixing portion 210. By providing at least one reinforcing rib 400, the structural strength and stability between the wheel hub 100 and the fixing portion 210 can be improved. When the adjusting portion 220 is installed on the fixing portion 210, the wheel hub 100 and the fixing portion 210 can provide support for the adjusting portion 220, and deformation of the fixing portion 210 due to load can be avoided.

[0051] Combination Figure 3-5 and Figure 7-8 As shown, in some embodiments, a preset space 410 is provided between one end of the reinforcing rib 400 away from the hub 100 and the outer wall of the fixing portion 210, and the preset space 410 can allow at least a portion of the adjusting portion 220 to extend into the preset space 410, so as to achieve a snap-fit ​​fit between the preset space 410 and the limiting position of the adjusting portion 220.

[0052] It can be understood that the side wall of the preset space 410 includes the side wall of the fixing portion 210 within the positive projection range of the reinforcing rib 400 on the fixing portion 210 and the side wall of the reinforcing rib 400; during the process of installing and connecting the fixing portion 210 and the adjusting portion 220, the end of the adjusting portion 220 close to the wheel hub 100 is extended into the preset space 410. At this time, the side wall of the preset space 410 can resist the adjusting portion 220, so that the adjusting portion 220 can have a certain stability in the preset space 410, thereby enabling the adjusting portion 220 to ... The node portion 220 is pre-positioned to prevent the adjusting portion 220 from shaking too much on the fixing portion 210 and affecting the installation. Afterwards, the adjusting portion 220 can be moved so that the corresponding first connecting hole 211 and the second connecting hole 221 are positioned correspondingly. During this process, the preset space 410 can still limit the movement of the adjusting portion 220, so that the staff can adjust the movement of the position of the adjusting portion 220 for easy control. Finally, the fixing portion 210 and the adjusting portion 220 are fixedly installed by tightening the bolts 300.

[0053] In particular, the provision of the preset space 410 enables the reinforcing rib 400 to play multiple different roles at the same time and achieve different effects. On the one hand, it can strengthen the structural strength between the wheel hub 100 and the fixing portion 210, and on the other hand, it can achieve the pre-positioning of the adjustment portion 220 during the installation process, thereby achieving the effect of facilitating installation.

[0054] Further, after the fixing part 210 and the adjusting part 220 are fixedly installed by the fastening bolt 300, at least part of the adjusting part 220 remains within the preset space 410. This also means that the preset space 410 can always limit the adjusting part 220. When the fastening bolt 300 becomes loose, the preset space 410 can assist the fastening bolt 300 to improve the connection stability of the adjusting part 220 on the fixing part 210, prevent the adjusting part 220 from shaking greatly on the fixing part 210, and can prevent the adjusting part 220 from falling off, thus preferably improving safety.

[0055] Further, it should be noted that when the size of the adjusting part 220 is less than or equal to the size of the preset space 410, the adjusting part 220 can completely extend into the preset space 410. When the size of the adjusting part 220 is greater than the size of the preset space 410, part of the adjusting part 220 extends into the preset space 410.

[0056] In some embodiments, at least part of the adjusting part 220 can be clamped in the preset space 410 in an interference fit manner, which can further improve the position stability of the adjusting part 220 in the preset space 410, improve the effect of pre-positioning the adjusting part 220, and can assist the fastening bolt 300 to improve the installation connection stability between the fixing part 210 and the adjusting part 220.

[0057] Embodiment 2

[0058] This embodiment is an improvement based on Embodiment 1. As shown in Figure 4-6 a stirrer with adjustable blades, a plurality of hemispherical bumps 212 are provided on the side wall of the fixing part 210, and a plurality of grooves 222 are provided on the adjusting part 220, wherein at least part of the bumps 212 can extend into the grooves 222.

[0059] During the process of installing and connecting the fixing part 210 and the adjusting part 220, at least part of the adjusting part 220 is extended into the preset space 410, and then the position of the adjusting part 220 is adjusted so that the grooves 222 on the adjusting part 220 correspond to the positions of the bumps 212 on the fixing part 210, so that at least part of the bumps 212 extends into the grooves 222. At this time, the corresponding first connection holes 211 also correspond to the second connection holes 221. Finally, the fixing part 210 and the adjusting part 220 are fixedly installed by the fastening bolt 300. Since the bumps 212 extend into the grooves 222, a clamping effect can be formed between the bumps 212 and the grooves 222. Cooperating with the fastening bolt 300 to press the fixing part 210 and the adjusting part 220 can preferably improve the installation stability between the fixing part 210 and the adjusting part 220 and prevent shaking between the fixing part 210 and the adjusting part 220.

[0060] Further, during the installation process, after at least a part of the bump 212 extends into the groove 222, under the snap-fit of the bump 212 and the groove 222, the pre-positioning of the adjusting portion 220 on the fixing portion 210 can also be achieved. Combining with the pre-positioning between the adjusting portion 220 and the fixing portion 210 in the preset space 410 can preferably improve the stability of the adjusting portion 220 when installed on the fixing portion 210, which is convenient for operation.

[0061] Of course, it can be understood that a plurality of hemispherical bumps 212 can also be provided on the side wall of the preset space 410, so that the bumps 212 on the side wall of the preset space 410 can also cooperate with the grooves 222 on the adjusting portion 220 to form a snap connection.

[0062] Combined with Figure 7-9 As shown, in some embodiments, the plurality of grooves 222 provided on the adjusting portion 220 are strip-shaped, and the grooves 222 open at the end of the adjusting portion 220 facing the hub 100.

[0063] During the process of installing and connecting the fixing portion 210 and the adjusting portion 220, move the adjusting portion 220 in the direction towards the hub 100. During this process, the bumps 212 on the fixing portion 210 and the preset space 410 can extend into the grooves 222, and then push the adjusting portion 220 towards the inside of the preset space 410 by the movement of the bumps 212 in the grooves 222, so that the adjusting portion 220 can extend into the preset space 410. Then rotate the adjusting portion 220 so that the bumps 212 move out of the grooves 222. At this time, since the bumps 212 all move out of the grooves 222 and abut against the side wall of the adjusting portion 220, the adjusting portion 220 can be snap-fitted in the preset space 410, and further the pre-positioning between the adjusting portion 220 and the fixing portion 210 can be achieved. Then rotate the adjusting portion 220 so that the corresponding first connection holes 211 and the second connection holes 221 can be connected by the fastening bolts 300, thereby realizing the installation and connection between the fixing portion 210 and the adjusting portion 220.

[0064] Specifically, in a state where the bump 212 does not extend into the groove 222, the adjusting portion 220 can be clamped with the pre-set space 410 in an interference fit manner. Therefore, by setting the groove 222 to be strip-shaped and opening at the end of the adjusting portion 220 close to the hub 100, it is possible to extend the bump 212 into the groove 222 outside the pre-set space 410, facilitating the adjusting portion 220 to extend into the pre-set space 410. Further, when adjusting the overall length dimension and / or the shape of the blade 200 itself, the adjusting portion 220 can be rotated first to make the bump 212 extend into the groove 222, so as to move the position of the adjusting portion 220 for easy adjustment. After adjustment, the bump 212 is then moved out of the groove 222 to achieve pre-positioning between the fixing portion 210 and the adjusting portion 220. Finally, the fixing portion 210 and the adjusting portion 220 are fixedly installed through the fastening bolt 300.

[0065] In summary, the above are only the preferred embodiments of the present invention, and all equivalent changes and modifications made according to the scope of the patent application of the present invention shall fall within the scope covered by the patent of the present invention.

Claims

1. A stirrer with adjustable blades, characterized in that: It includes a hub and at least one blade, and one end of the blade is fixedly connected to the circumferential side wall of the hub; the length dimension of the blade in the radial direction of the hub and / or the shape of the blade itself are adjustable; The blade includes a fixed part and an adjustment part; one end of the fixed part is fixedly connected to the circumferential side wall of the hub, and the other end detachably connects the adjustment part; The installation position between the adjustment part and the fixed part is adjustable to realize the adjustment of the length dimension and / or the shape of the blade itself; At least one reinforcing rib is arranged between the fixed part and the hub; There is a preset space between the end of the reinforcing rib far from the hub and the fixed part; In the assembled state, at least part of the adjustment part is clamped in the preset space.

2. The paddle-adjustable stirrer according to claim 1, characterized in that: A plurality of first connection holes are arranged on the fixed part; a plurality of second connection holes are arranged on the adjustment part; The adjustment part is matched with the first connection hole through a fastening bolt with the second connection hole to realize the adjustment of the length dimension and / or the shape of the blade itself.

3. The paddle-adjustable stirrer according to claim 2, characterized in that: The fixed part and the adjustment part are connected by at least two of the fastening bolts.

4. The paddle-adjustable stirrer according to claim 1, characterized in that: A plurality of hemispherical bumps are arranged on the side wall of the fixed part and / or the side wall of the preset space; a plurality of grooves for the bumps to extend into are arranged on the adjustment part.

5. The paddle-adjustable stirrer according to claim 1 or 4, characterized in that: In the assembled state, at least part of the adjustment part is clamped in the preset space in an interference fit manner.

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