Flow guide tube structure and stirring device

Abstract

The present disclosure relates to a guide tube structure and a stirring device, the guide tube structure comprising a first tube body and at least two second tube bodies, the first tube body being flexible and the second tube bodies being rigid, the first tube body being arranged between two adjacent second tube bodies. The technical solution of the present disclosure effectively solves the technical problem of poor mixing effect of fluid in the conventional stirring device.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of stirring equipment, and particularly relates to a draft tube structure and a stirring device. BACKGROUND

[0002] The stirring device is a basic operation unit for mixing materials in production processes such as chemical industry, metallurgy, biological fermentation, and wastewater treatment. The stirring operation mainly rotates the stirring paddle fixed on the stirring shaft by the motor, and inputs mechanical energy to the fluid, so that the fluid in the stirring tank forms a specific flow field, and the corresponding mass transfer, heat transfer, momentum transfer or chemical reaction process is carried out in the flow field. However, only mixing by the stirring blade cannot take into account the small flow rate of the stirring "dead zone" at the bottom of the stirring tank far from the stirring blade, so that the mixing degree inside the fluid is not high.

[0003] In the related art, in order to improve the stirring "dead zone" in the stirring tank and improve the mixing effect of the fluid, a rigid draft tube is arranged outside the stirrer to enhance the axial circulation flow of the fluid in the stirring process and improve the mixing effect of the fluid in the axial direction. However, the interaction force between the fluid in the flow process and the rigid draft tube is small, so that the fluid gradually forms a "stable" flow pattern in the axial direction, and the mixing degree of the fluid in the stirring tank is far from the expectation, and the fluid mixing effect is limited. SUMMARY

[0004] The present disclosure provides a draft tube structure and a stirring device to solve the technical problem of poor fluid mixing effect in the conventional stirring device.

[0005] To this end, in a first aspect, the embodiments of the present disclosure provide a draft tube structure, comprising a first cylinder and at least two second cylinders, the first cylinder has flexibility, the second cylinder has rigidity, and the first cylinder is arranged between two adjacent second cylinders.

[0006] In a possible implementation, the ratio of the axial dimension of the first cylinder to the axial dimension of the second cylinder is (1.5-6):1; and / or,

[0007] The maximum radial dimension of the first cylinder is the same as the maximum radial dimension of the second cylinder.

[0008] In a possible implementation, the inner side surface of the first cylinder is any one of a plane, a wavy surface, a toothed surface or a special-shaped curved surface; and / or,

[0009] The outer side surface of the first cylinder is any one of a plane, a wavy surface, a toothed surface or a special-shaped curved surface.

[0010] In a second aspect, the embodiments of the present disclosure also provide a stirring device, comprising:

[0011] The device body has a stirring tank for containing the material to be stirred.

[0012] The flow guide structure is arranged in the stirring tank.

[0013] The elastic connecting assembly is used to connect the second cylinder of the flow guide structure and the device body.

[0014] The stirrer is arranged in the flow guide structure.

[0015] In a possible implementation, the ratio of the maximum radial dimension of the flow guide structure to the maximum radial dimension of the stirring tank is (0.3-0.6):1; and / or,

[0016] The ratio of the axial dimension of the flow guide structure to the axial dimension of the stirring tank is (0.5-0.9):1.

[0017] In a possible implementation, the ratio of the distance between the bottom of the flow guide structure and the bottom of the stirring tank to the maximum radial dimension of the stirring tank is (0.25-0.5):1.

[0018] In a possible implementation, the stirrer comprises a stirring shaft, at least two stirring paddles and a driving member, the at least two stirring paddles are arranged on the stirring shaft in the axial direction of the stirring shaft, and the stirring shaft is connected to the output end of the driving member.

[0019] The inner part of the second cylinder is provided with at least one stirring paddle.

[0020] In a possible implementation, the ratio of the maximum radial dimension of the flow guide structure to the maximum radial dimension of the stirring paddle is (1.25-2.5):1; and / or,

[0021] The ratio of the axial dimension of the second cylinder to the axial dimension of the stirring paddle is (4-16):1.

[0022] In a possible implementation, the elastic connecting assembly comprises a first connecting member, an elastic member and a second connecting member connected in sequence, the first connecting member is connected to the second cylinder, the second connecting member is connected to the device body, and the elastic connecting assembly extends in the radial direction of the flow guide structure.

[0023] In a possible implementation, the amplitude of the elastic member is 0.3-1.5 cm; and / or,

[0024] The first connecting member, the elastic member and the second connecting member are integrally formed.

[0025] According to an embodiment of the present disclosure, a guide tube structure and a stirring device are provided. The guide tube structure includes a first tube and at least two second tubes, wherein the first tube is flexible and the second tube is rigid, and the first tube is arranged between two adjacent second tubes. In the embodiment of the present disclosure, by optimizing the specific configuration of the guide tube structure, the guide tube structure is made to have both rigid and flexible characteristics. In this way, while satisfying the rigid connection between the guide tube structure and the device body and the axial flow guidance of the fluid within the device body by the guide tube structure, the flexible deformation of the first tube in the guide tube structure improves the flow of the fluid in the stirring tank in the radial direction and / or other directions at an angle to the axial direction, breaking the "axial stable flow pattern" phenomenon formed by traditional rigid guide tubes during fluid flow, greatly enhancing the turbulence and chaos of the fluid, and promoting the fluid to form an "axial non-stable flow pattern", which greatly improves the mixing effect of the fluid. Specifically, the guide tube structure is configured as a composite component including at least a flexible first tube and a rigid second tube, wherein the first tube is arranged between two adjacent second tubes, and is used to provide the guide tube structure with flexibility and multi-directional deformation. In this way, the fluid flowing through this section can collide / impact the wall of the first cylinder in multiple directions. The wall of the first cylinder is deformed after being subjected to the collision / impact force, and a reaction force is fed back to the fluid, causing the fluid to move in the opposite direction after colliding / impacting the wall of the first cylinder, thereby breaking the stable state of the axial movement of the fluid in the stirring tank along the guide cylinder structure; the deformation movement and multi-body movement of the first cylinder not only break the stable flow state of the fluid in the guide cylinder structure, but also break the stable flow state of the fluid between the guide cylinder structure and the device body, greatly increasing the disorder of the fluid flow in all areas of the stirring tank, and enhancing the turbulence and chaos of the fluid. The second cylinder is used to provide rigidity and fluid diversion to the guide cylinder structure, so as to achieve a rigid connection between the guide cylinder structure and the device body, improve the stability of the second cylinder in its radial direction, and improve the stability of the working environment of the stirring paddle. At the same time, the rigid second cylinder can provide a stable flow environment for the fluid flowing through this section along the axial movement of the guide cylinder structure, so that the fluid flowing through this section can achieve a stable state of axial flow, and realize a good diversion effect of the guide cylinder structure on the fluid in the stirring tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without inventive work. In addition, in the drawings, the same reference numerals are used for the same components, and the drawings are not drawn to scale.

[0027] Fig. 1 A perspective view of a stirring device provided in accordance with an embodiment of the present disclosure;

[0028] Fig. 2 A partial perspective view of a stirring device provided by the embodiments of the present disclosure is shown in the figure.

[0029] Fig. 3 A perspective view of a flow guide cylinder structure provided by the embodiments of the present disclosure is shown in the figure.

[0030] Explanation of reference signs:

[0031] 100, flow guide cylinder structure; 110, first cylinder body; 120, second cylinder body;

[0032] 200, device body; 201, stirring tank;

[0033] 300, elastic connection assembly; 310, first connecting piece; 320, elastic piece; 330, second connecting piece;

[0034] 400, stirrer; 410, stirring shaft; 420, stirring paddle; 430, driving piece;

[0035] X, radial direction; Y, axial direction. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present disclosure.

[0037] Referring to Figs. 1-3 The embodiments of the present disclosure provide a flow guide cylinder structure, which comprises a first cylinder body 110 and at least two second cylinder bodies 120. The first cylinder body 110 is flexible, the second cylinder body 120 is rigid, and the first cylinder body 110 is arranged between two adjacent second cylinder bodies 120.

[0038] In this embodiment, by optimizing the specific configuration of the flow guide cylinder structure 100, the flow guide cylinder structure 100 simultaneously has rigid and flexible characteristics. In this way, while meeting the rigid connection of the flow guide cylinder structure 100 and the device body 200 and the axial Y flow guiding of the flow guide cylinder structure 100 to the fluid inside the device body 200, the flexible deformation of the first cylinder body 110 in the flow guide cylinder structure 100 improves the flow of the fluid in the radial X and / or other directions at an angle with the axial Y in the stirring tank 201, breaks the "axial Y stable flow pattern" phenomenon formed by the traditional rigid flow guide cylinder in the fluid flow process, greatly enhances the turbulence and chaos degree of the fluid, and promotes the fluid to form an "axial Y unstable flow pattern", greatly improving the mixing effect of the fluid.

[0039] Specifically, the flow guide cylinder structure 100 is configured as a combined component including at least a flexible first cylinder body 110 and a rigid second cylinder body 120. The first cylinder body 110 is arranged between two adjacent second cylinder bodies 120 to provide flexibility and multi-directional deformation to the flow guide cylinder structure 100. In this way, the fluid flowing through this section can impact / impact the cylinder wall of the first cylinder body 110 in multiple directions. The cylinder wall of the first cylinder body 110 deforms after being impacted / impacted by the force, and feeds back a reaction force to the fluid, so that the fluid moves reversely after impacting / impacting the cylinder wall of the first cylinder body 110, thereby breaking the stable state of the fluid moving in the axial Y direction of the flow guide cylinder structure 100 in the stirring tank 201. The deformation and multi-body motion of the first cylinder body 110 not only break the stable flow state of the fluid in the flow guide cylinder structure 100, but also break the stable flow state of the fluid between the flow guide cylinder structure 100 and the device body 200, greatly improving the disorder of fluid flow in all areas of the stirring tank 201, enhancing the turbulence and chaos degree of the fluid. The second cylinder body 120 is used to provide rigidity and fluid guiding to the flow guide cylinder structure 100. In this way, the rigid connection of the flow guide cylinder structure 100 and the device body 200 is achieved, the positional stability of the second cylinder body 120 in the radial X direction is improved, and the operating environment stability of the stirring paddle 420 is improved. At the same time, the rigid second cylinder body 120 can provide a stable flow environment for the fluid flowing through this section in the axial Y direction of the flow guide cylinder structure 100, so that the fluid flowing through this section can realize the stable state of axial Y flow, and achieve good flow guiding effect of the flow guide cylinder structure 100 to the fluid in the stirring tank 201.

[0040] In an example, the first cylinder body 110 and the second cylinder body 120 are both open-ended cylindrical structures. The first cylinder body 110 is provided with one, and the second cylinder body 120 is provided with two. The first cylinder body 110 is seamlessly connected between the two second cylinder bodies 120. In this way, the flow guide cylinder structure 100 can provide a stable environment for the fluid to flow in two axial Y directions and an unordered flow environment for the fluid to flow in multiple directions.

[0041] Of course, in other embodiments, the first cylinder body 110 can also be provided with N, and the second cylinder body 120 is provided with (N+1), the first cylinder body 110 is seamlessly connected between the adjacent two second cylinder bodies 120, and the first and second cylinder bodies 110 and 120 are both rigid. At this time, the flow guide cylinder structure 100 can provide N segments of multi-directional flow disorder flow environment and (N+1) segments of axial Y flow stable environment for the fluid, and the disorder flow environment and the axial Y stable environment are staggered, so that the fluid mixing effect of the flow guide cylinder structure 100 is better, and the mixing efficiency is higher.

[0042] In an example, the material of the first cylinder body 110 is any one of flexible materials such as tetrafluoroethylene, neoprene, styrene-butadiene rubber, silicone or PVC.

[0043] In a possible implementation, the ratio of the axial Y size of the first cylinder body 110 to the axial Y size of the second cylinder body 120 is (1.5-6):1.

[0044] In this embodiment, the height size of the first cylinder body 110 and the second cylinder body 120 is optimized. Specifically, the ratio of the axial Y size of the first cylinder body 110 to the axial Y size of the second cylinder body 120 is configured to be (1.5-6):1, so that the flow guide cylinder structure 100 can have appropriate or sufficient deformation movement to improve the disorder flow of the fluid; at the same time, the flow guide cylinder structure 100 has appropriate rigidity to improve the good flow guide / induction effect of the fluid. For example, but not limited to, the ratio of the axial Y size of the first cylinder body 110 to the axial Y size of the second cylinder body 120 is 2:1.

[0045] When the ratio of the axial Y size of the first cylinder body 110 to the axial Y size of the second cylinder body 120 is too small, the deformation movement provided by the first cylinder body 110 is limited, and the interaction between the fluid flowing through this segment and the first cylinder body 110 is weak. At this time, the induction effect of the first cylinder body 110 is much greater than the effect of providing disorder flow environment for the fluid; when the ratio of the axial Y size of the first cylinder body 110 to the axial Y size of the second cylinder body 120 is too large, the flexible segment of the flow guide cylinder structure 100 is too large, which affects the stability of the axial Y flow of the fluid and the flow guide / induction effect.

[0046] In a possible implementation, the maximum radial X size of the first cylinder body 110 is the same as the maximum radial X size of the second cylinder body 120.

[0047] In this embodiment, in order to ensure the seamless connection of the first cylinder body 110 and the second cylinder body 120, the maximum radial X size of the first cylinder body 110 is configured to be the same as the maximum radial X size of the second cylinder body 120. Of course, the wall thickness of the first cylinder body 110 is also the same as the wall thickness of the second cylinder body 120.

[0048] In an embodiment, the first cylinder 110 and the second cylinder 120 can be formed by punching and sewing or by laser welding.

[0049] In a possible implementation, the inner side of the first cylinder 110 is any one of a flat surface, a wavy surface, a toothed surface or a special-shaped curved surface; and / or,

[0050] The outer side of the first cylinder 110 is any one of a flat surface, a wavy surface, a toothed surface or a special-shaped curved surface.

[0051] In the embodiment, the shape of the first cylinder 110 is optimized. Specifically, the inner side and / or the outer side of the first cylinder 110 can be configured as a smooth flat surface to reduce the processing difficulty. In other embodiments, to further increase the flow time of the fluid in a disordered flow environment and improve the softness of the flow guide cylinder structure 100, the inner side and / or the outer side of the first cylinder 110 can also be configured as a wavy surface, a toothed surface or a special-shaped curved surface.

[0052] It should be understood that the shapes of the inner side and the outer side of the first cylinder 110 can be the same or different, which is not limited herein.

[0053] Referring to Figs. 1-3 In a second aspect, the disclosure also provides a stirring device, which comprises a device body 200, the flow guide cylinder structure 100 as described above, an elastic connecting assembly 300 and a stirrer 400.

[0054] The device body 200 has a stirring tank 201 for accommodating the material to be stirred;

[0055] The flow guide cylinder structure 100 as described above is arranged in the stirring tank 201;

[0056] The elastic connecting assembly 300 is used to connect the second cylinder 120 of the flow guide cylinder structure 100 and the device body 200; and the stirrer 400 is arranged in the flow guide cylinder structure 100.

[0057] In this embodiment, by optimizing the specific configuration of the flow guide cylinder structure 100 in the stirring device and the connection mode of the flow guide cylinder structure 100 and the device body 200, at least from the local part of the flow guide cylinder structure 100 (the flexible deformation and multi-body motion of the first cylinder body 110), the connection assembly between the flow guide cylinder structure 100 and the device body 200 (the radial motion provided by the elastic connection assembly 300 to the second cylinder body 120), and the whole flow guide cylinder structure 100 (the radial relative motion between the first cylinder body 110 and the second cylinder body 120), the radial X and / or non-axial Y chaos degree and fluid unstable flow of the stirring device are improved, thereby destroying the "axial Y stable flow pattern" that is easily formed by the fluid in the flow process due to the use of rigid flow guide cylinder in the traditional stirring device, the relative fixed position between the rigid flow guide cylinder and the device body 200, and the axial Y flow guide / flow guide role of the rigid flow guide cylinder in the stirring device; and breaking the situation that the fluid mixing process is weakly enhanced and the fluid in the stirring tank 201 is not fully mixed due to the use of straight connecting rod to connect the rigid flow guide cylinder and the inner wall of the stirring tank, and the straight connecting rod is only used to fix the rigid flow guide cylinder, lacking the use of the interaction force between the fluid and the rigid flow guide cylinder.

[0058] Specifically, the stirring device is configured to include at least a combination of the device body 200, the flow guide cylinder structure 100 as described above, the elastic connection assembly 300, and the stirrer 400. The stirring tank 201 of the device body 200 is used to accommodate and hold the material / fluid to be stirred. The flow guide cylinder structure 100 divides the fluid in the stirring tank 201 into two parts, the inner and outer parts, to guide / flow the fluid on the outside to the inside of the flow guide cylinder structure 100. After being stirred and mixed by the stirrer 400, the fluid flows out from the bottom of the flow guide cylinder structure 100 to the outside (between the flow guide cylinder structure 100 and the inner wall of the device body 200), and under the limiting / counteracting force of the inner wall of the device body 200, the fluid flows towards the top of the flow guide cylinder structure 100. The stirrer 400 is used to stir and mix the fluid inside the flow guide cylinder structure 100, and generates a suction force inside the flow guide cylinder structure 100 to attract / flow the fluid at the top of the flow guide cylinder structure 100 to the inside of the flow guide cylinder structure 100. In this way, the fluid forms an axial Y circulation in the stirring tank 201, and the axial Y chaos degree of the fluid in the stirring tank 201 is improved.

[0059] Further, the elastic connection assembly 300 is used to fix the flow guide cylinder structure 100 on one hand, and on the other hand, during the fluid mixing and stirring process, the elastic connection assembly 300 is contracted, elongated or vibrated due to the interaction force between the fluid and the flow guide cylinder structure 100, and the contraction, elongation or vibration of the elastic connection assembly 300 gathers or releases energy, thereby causing the non-steady motion of the flow guide cylinder structure 100 and increasing the interaction force between the fluid and the flow guide cylinder structure 100. At the same time, the elastic connection assembly 300 keeps non-steady vibration during the fluid mixing and stirring process, so that the interaction force between the fluid and the flow guide cylinder structure 100 is fully utilized, further promoting the non-steady vibration of the fluid in the stirring tank 201, enhancing the chaotic degree / turbulent degree of the fluid, strengthening the transmission and mixing process between the fluids, and improving the mixing efficiency of the fluids.

[0060] Further, the flow guide cylinder structure 100 is configured to include at least two second cylinder bodies 120 and a first cylinder body 110 connected between adjacent two second cylinder bodies 120. The second cylinder body 120 has rigidity, which on one hand can meet the rigid connection of the elastic connection assembly 300 and the flow guide cylinder structure 100, and improve the connection stability of the elastic connection assembly 300 and the flow guide cylinder structure 100; and on the other hand can provide rigid support for the shear force generated by the fluid when the stirrer 400 is stirring, so as to avoid the deformation of the flow guide cylinder structure 100 and the loss of the axial Y flow guiding / inducing effect on the fluid. In addition, the rigidly arranged second cylinder body 120 can also provide a good axial Y connection environment for the flexible first cylinder body 110, and enhance the connection stability of the first cylinder body 110 and the second cylinder body 120. The first cylinder body 110 has flexibility, which on one hand can provide a deformation amount for the fluid flowing through the section on both sides of the flow guide cylinder structure 100, so that the fluid flowing through the inside or outside of the flow guide cylinder structure 100 can impact / impinge on the cylinder wall of the first cylinder body 110 in multiple directions. After the cylinder wall of the first cylinder body 110 is impacted / impinged by the force, the cylinder wall is deformed and feeds back a reaction force to the fluid, so that the fluid moves reversely after impacting / impinging on the cylinder wall of the first cylinder body 110, thereby breaking the stable state of the fluid moving along the axial Y direction of the flow guide cylinder structure 100 in the stirring tank 201, improving the disorder of the fluid in the stirring tank 201, increasing the non-axial Y flow of the fluid, enhancing the internal chaos degree of the fluid, and promoting the fluid to form an "axial Y non-steady flow pattern". On the other hand, compared with the traditional rigid flow guide cylinder with a fixed axial Y length, the axial Y length of the composite flow guide cylinder structure 100 with rigidity and flexibility can change with the impact / impingement flexibility of the fluid, and the axial Y circulation ability of the flow guide cylinder structure 100 also changes accordingly.

[0061] In addition, the second cylinder 120 is connected with the device body 200 through the elastic connecting assembly 300, so as to provide a small range of radial X flow environment for the fluid at the second cylinder 120. When the second cylinder 120 is subjected to a resultant force in a certain direction, the elastic connecting assembly 300 will be contracted or elongated under the action of the resultant force, thereby driving the second cylinder 120 to move radially X, at this time, the fluid in the second cylinder 120 moves radially X as a whole; then, under the elastic force of the elastic connecting assembly 300, the second cylinder 120 moves towards the direction of restoring the original position, at this time, the fluid in the second cylinder 120 moves towards the direction of restoring the original position as a whole, thereby realizing the small amplitude radial X movement of the fluid flowing through the inner and outer sides of the second cylinder 120, further promoting the non-steady flow of the fluid in the stirring tank 200, enhancing the chaos degree or turbulence degree of the fluid, and improving the mixing efficiency of the fluid.

[0062] In an example, the device body 200 is an open-ended barrel structure, and the flow guide cylinder structure 100 is a double-ended cylinder structure, which is arranged in the device body 200 in a spaced manner.

[0063] In a possible implementation, the ratio of the maximum radial X size of the flow guide cylinder structure 100 to the maximum radial X size of the stirring tank 201 is (0.3-0.6):1.

[0064] In the embodiment, the radial X sizes of the flow guide cylinder structure 100 and the device body 200 are optimized to improve the axial Y circulation capacity of the stirring device. Specifically, the ratio of the maximum radial X size of the flow guide cylinder structure 100 to the maximum radial X size of the stirring tank 201 is configured to be (0.3-0.6):1. For example, but not limited to, the ratio of the maximum radial X size of the flow guide cylinder structure 100 to the maximum radial X size of the stirring tank 201 is 0.5:1.

[0065] Specifically, when the ratio of the maximum radial X dimension of the draft tube structure 100 to the maximum radial X dimension of the stirring tank 201 is too small, the fluid flow cross section inside the draft tube structure 100 becomes small, and the fluid flow velocity inside becomes large. At this time, the distance between the draft tube structure 100 and the inner wall of the device body 200 becomes large, the fluid flow cross section outside the draft tube structure 100 becomes large, and the fluid flow velocity outside becomes small. The fluid flow velocity difference between the inside and outside of the draft tube structure 100 is large, the axial Y circulation ability of the fluid is too large, the fluid is forced to flow in the axial Y direction before it can undergo or only a small amount of multi-directional movement in the radial X direction / angle with the axial Y direction, the axial Y ordered flow stability of the fluid is strong, and the internal mixing effect of the fluid is poor. When the ratio of the maximum radial X dimension of the draft tube structure 100 to the maximum radial X dimension of the stirring tank 201 is too large, the fluid flow cross section inside the draft tube structure 100 becomes large, and the fluid flow velocity inside becomes small. At this time, the distance between the draft tube structure 100 and the inner wall of the device body 200 becomes small, the fluid flow cross section outside the draft tube structure 100 becomes small, and the fluid flow velocity outside becomes large. The fluid is prone to form a stirring "dead zone" at the bottom of the draft tube structure 100.

[0066] In a possible implementation, the ratio of the axial Y dimension of the draft tube structure 100 to the axial Y dimension of the stirring tank 201 is (0.5-0.9): 1.

[0067] In this embodiment, the axial Y dimensions of the draft tube structure 100 and the device body 200 are optimized to improve the axial Y circulation ability of the stirring device. Specifically, the ratio of the axial Y dimension of the draft tube structure 100 to the axial Y dimension of the stirring tank 201 is configured to be (0.5-0.9): 1. For example but not limited to, the ratio of the axial Y dimension of the draft tube structure 100 to the axial Y dimension of the stirring tank 201 is 0.8: 1.

[0068] Specifically, when the ratio of the axial Y dimension of the draft tube structure 100 to the axial Y dimension of the stirring tank 201 is small, the axial Y circulation path of the fluid is short, the axial Y circulation range of the fluid in the stirring tank 201 is small, and the axial Y circulation ability of the fluid in the stirring tank 201 is limited. When the ratio of the axial Y dimension of the draft tube structure 100 to the axial Y dimension of the stirring tank 201 is large, the axial Y circulation path of the fluid is long, the circulation range of the fluid in the stirring tank 201 is large, and the stirring power consumed is large.

[0069] In a possible implementation, the ratio of the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 to the maximum radial X dimension of the stirring tank 201 is (0.25-0.5): 1.

[0070] In this embodiment, the distance between the bottom of the draft tube structure 100 and the bottom of the device body 200 is optimized to improve the axial Y circulation capacity of the stirring device. Specifically, the ratio of the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 to the maximum radial X dimension of the stirring tank 201 is configured to be (0.25-0.5):1. For example, but not limited to, the ratio of the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 to the maximum radial X dimension of the stirring tank 201 is 0.35:1.

[0071] Specifically, when the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 is small, solid particle accumulation is prone to occur at the bottom of the draft tube structure 100 during solid-liquid mixing, causing the bottom area of the stirring tank 201 to be blocked; when the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 is large, the fluid flow rate in the bottom area of the stirring tank 201 is small, and the degree of fluid turbulence is small, which is prone to form a stirring "dead zone".

[0072] In one possible implementation, the stirrer 400 includes a stirring shaft 410, at least two stirring paddles 420 arranged along the axial Y direction of the stirring shaft 410, and a driving member 430 connected to the output end of the driving member 430.

[0073] One second cylinder 120 is internally provided with at least one stirring paddle 420.

[0074] In this embodiment, the specific configuration of the stirrer 400 is optimized to improve the stirring and mixing effect of the stirring device. Specifically, the stirrer 400 is configured to include at least a combination of a stirring shaft 410, at least two stirring paddles 420, and a driving member 430, the output end of the driving member 430 is connected to the stirring shaft 410, the stirring shaft 410 is arranged in the draft tube structure 100, the stirring paddles 420 are arranged on the stirring shaft 410, and the stirring paddles 420 correspond to the second cylinder 120. In this way, the driving member 430 is driven to rotate the stirring shaft 410, and then the stirring paddles 420 on the stirring shaft 410 are rotated to generate a suction force on the inside of the draft tube structure 100, and the fluid outside the draft tube structure 100 is sucked into / led into / introduced into the inside of the draft tube structure 100 for stirring and mixing.

[0075] In one example, the stirring paddle 420 is an axial flow stirring paddle 420, and the driving member 430 is a driving motor.

[0076] In one example, one second cylinder 120 is provided with one stirring paddle 420 to stir the fluid flowing through the section. Of course, in other embodiments, two or more stirring paddles 420 can be provided in one second cylinder 120 to improve the chaotic degree of the fluid flowing through the section.

[0077] In one possible implementation, the ratio of the maximum radial X dimension of the flow guide cylinder structure 100 to the maximum radial X dimension of the stirring paddle 420 is (1.25-2.5):1.

[0078] In this embodiment, the maximum radial X dimensions of the flow guide cylinder structure 100 and the stirring paddle 420 are optimized. Specifically, the ratio of the maximum radial X dimension of the flow guide cylinder structure 100 to the maximum radial X dimension of the stirring paddle 420 is configured to be (1.25-2.5):1. For example but not limited to, the ratio of the maximum radial X dimension of the flow guide cylinder structure 100 to the maximum radial X dimension of the stirring paddle 420 is 2:1.

[0079] Specifically, in the solid-liquid mixing process, when the ratio of the maximum radial X dimension of the flow guide cylinder structure 100 to the maximum radial X dimension of the stirring paddle 420 is small, the fluid flow rate inside the flow guide cylinder structure 100 is large, and the axial Y movement ability of the inside fluid is strong. At this time, the fluid flow rate outside the flow guide cylinder structure 100 is small, and the axial Y movement ability of the outside fluid is weak, and the solid particles in the fluid are easy to accumulate on the outside of the flow guide cylinder structure 100. When the ratio of the maximum radial X dimension of the flow guide cylinder structure 100 to the maximum radial X dimension of the stirring paddle 420 is large, the flow rate inside the flow guide cylinder structure 100 is small, and the axial Y movement ability of the inside fluid is weak. At this time, the fluid flow rate outside the flow guide cylinder structure 100 is large, and the axial Y movement ability of the outside fluid is strong, and the solid particles in the fluid are easy to accumulate on the inside of the flow guide cylinder structure 100.

[0080] In one possible implementation, the ratio of the axial Y dimension of the second cylinder 120 to the axial Y dimension of the stirring paddle 420 is (4-16):1.

[0081] In this embodiment, the axial Y dimensions of the flow guide cylinder structure 100 and the stirring paddle 420 are optimized. Specifically, the ratio of the axial Y dimension of the second cylinder 120 to the axial Y dimension of the stirring paddle 420 is configured to be (4-16):1. For example but not limited to, the ratio of the axial Y dimension of the second cylinder 120 to the axial Y dimension of the stirring paddle 420 is 10:1.

[0082] Specifically, when the ratio of the axial Y dimension of the second cylinder 120 to the axial Y dimension of the stirring paddle 420 is small, the axial Y dimension of the second cylinder 120 is small, which results in a small induced flow effect and weak axial Y circulation ability of the fluid; when the ratio of the axial Y dimension of the second cylinder 120 to the axial Y dimension of the stirring paddle 420 is large, the axial Y dimension of the second cylinder 120 is large, and since the axial Y dimension of the flow guide cylinder structure 100 is relatively fixed, the excessive axial Y dimension of the second cylinder 120 reduces the axial Y dimension of the first cylinder 110, which reduces the flexibility of the flow guide cylinder structure 100 and the non-axial Y deformation variable provided for the fluid, and is not conducive to breaking the axial Y stable flow environment of the fluid in the stirring tank 201.

[0083] In a possible implementation, the elastic connection assembly 300 includes a first connecting piece 310, an elastic piece 320 and a second connecting piece 330 connected in sequence, the first connecting piece 310 is connected to the second cylinder 120, the second connecting piece 330 is connected to the device body 200, and the elastic connection assembly 300 extends along the radial X direction of the flow guide cylinder structure 100.

[0084] In this embodiment, the specific configuration of the elastic connection assembly 300 is optimized. Specifically, the elastic connection assembly 300 is configured as a combined member including at least the first connecting piece 310, the elastic piece 320 and the second connecting piece 330, the first connecting piece 310 is used to connect the elastic piece 320 and the second cylinder 120, and the second connecting piece 330 is used to connect the elastic piece 320 and the device body 200, so that the flow guide cylinder structure 100 is provided with a radial X elastic force by the elastic connection assembly 300, and the second cylinder 120 can be restored to the original position under the action of the radial X elastic force when it deviates from the original position. In this way, an overall radial X movement variable is provided for the fluid flowing through the section, thereby improving the radial X turbulence degree and chaos degree of the fluid flowing through the second cylinder 120.

[0085] In an example, the elastic piece 320 is any one of a carbon spring, a silicon-manganese spring, a vanadium-chromium spring or a stainless steel spring. The first connecting piece 310 and the second connecting piece 330 are rigid connecting rods.

[0086] In a possible implementation, the amplitude of the elastic piece 320 is 0.3 cm to 1.5 cm.

[0087] In this embodiment, the elastic force provided by the elastic member 320 is optimized. Specifically, the amplitude of the elastic member 320 is configured to be 0.3 cm to 1.5 cm, so as to appropriately adjust the vibration amplitude of the elastic member 320, so that the radial X unstable vibration amplitude of the flow guide structure 100 is appropriate, and the chaos degree of the fluid in the stirring tank 201 is appropriate. It should be understood that the strength of the elastic member 320 at least meets the support of the gravity of the flow guide structure 100, so as to ensure that the flow guide structure 100 will not bend and deform downward due to its own gravity, and axial Y displacement will not occur.

[0088] Specifically, when the amplitude of the elastic member 320 is small, the chaos degree of the fluid in the stirring tank 201 is small, the fluid mixing effect is limited, and the mixing efficiency is low; when the amplitude of the elastic member 320 is large, the radial X unstable vibration amplitude of the flow guide structure 100 is large, which affects the axial Y circulating flow of the fluid in the stirring tank 201.

[0089] In a possible implementation, the first connecting member 310, the elastic member 320 and the second connecting member 330 are integrally formed.

[0090] In this embodiment, the first connecting member 310, the elastic member 320 and the second connecting member 330 are integrally formed for the convenience of processing and the reduction of assembly time. At this time, the wire diameters of the first connecting member 310 and the second connecting member 330 are required to be the same as that of the elastic member 320, so as to ensure that the first connecting member 310 and the second connecting member 330 can form an integral casting with the elastic member 320, and the strength and service life of the elastic connecting assembly 300 are improved.

[0091] Of course, in other embodiments, the first connecting member 310, the elastic member 320 and the second connecting member 330 can also be separately formed, and then connected through welding or other means.

[0092] In order to further illustrate the beneficial effects of the flow guide structure 100 and the stirring device provided by the present disclosure, the following will be described in combination with specific embodiment groups. It should be understood that the specific embodiment groups are further detailed descriptions of the present disclosure, and do not limit the protection scope of the present disclosure. At the same time, the raw materials and use equipment involved in the embodiment groups can be obtained by purchasing on the market.

[0093] Embodiment group 1

[0094] 1、① The traditional stirring device is that the flow guide cylinder is a pure rigid flow guide cylinder, and the flow guide cylinder and the device body 200 are connected through a rigid connecting rod.

[0095] The stirring device provided in the present application is: the flow guide cylinder structure 100 is a flow guide cylinder with rigidity and flexibility, and the flow guide cylinder structure 100 is connected with the device body 200 through the elastic connecting assembly 300. Specifically, the flow guide cylinder structure 100 is configured as a composite structure with two second cylinder bodies 120 and one first cylinder body 110, and the stirrer 400 is configured as two stirring paddles 420, each of which is provided corresponding to a second cylinder body 120. Wherein, the elastic member 320 is a stainless steel spring, the length of the elastic member 320 is 0.06m, and the wire diameter is 0.006m. The diameter of the stirring tank 201 is 0.48m, the height is 1m, and the fluid height in the stirring tank 201 is kept at 0.8m. The height of the flow guide cylinder structure 100 is 0.54m, the distance between the bottom of the flow guide cylinder structure 100 and the bottom of the stirring tank 201 is 0.13m; the height of the second cylinder body 120 is 0.12m; the material of the first cylinder body 110 is silica gel, and the height of the first cylinder body 110 is 0.3m. The height of the stirring paddle 420 is 0.04m.

[0096] 2. The traditional stirring device and the stirring device provided in the present application were respectively used to carry out acid-base decolorization test on 0.8% carboxymethyl cellulose sodium solution under stirring speed of 50rpm, 100rpm and 150rpm, the mixing time of the fluid was measured, and the result data shown in Table 1 was obtained.

[0097] Table 1 Mixing time of fluid of traditional stirring device and stirring device provided in the present application under different stirring speeds

[0098] 3. Result analysis: from the data in Table 1, when the stirring speed is 50rpm, compared with the mixing time of 42s of the traditional stirring device, the mixing time of the stirring device provided in the present application is shortened to 39s, which is shortened by 7.14% in total; when the stirring speed is 100rpm, compared with the mixing time of 35s of the traditional stirring device, the mixing time of the stirring device provided in the present application is shortened to 31s, which is shortened by 11.43% in total; when the stirring speed is 150rpm, compared with the mixing time of 29s of the traditional stirring device, the mixing time of the stirring device provided in the present application is shortened to 25s, which is shortened by 13.79% in total.

[0099] Example group 2

[0100] 1. Selection of stirring device: the draft tube structure 100 is configured as a composite structure having two second tube bodies 120 and one first tube body 110, and the stirrer 400 is configured as two stirring paddles 420, each of which is provided with a second tube body 120. The elastic member 320 is a stainless steel spring, the length of the elastic member 320 is 0.06 m, and the wire diameter is 0.006 m. The diameter of the stirring tank 201 is 0.48 m, the height is 1 m, and the fluid height in the stirring tank 201 is kept at 0.8 m. The height of the draft tube structure 100 is 0.54 m, the diameter of the draft tube structure 100 is 0.18 m, 0.24 m and 0.32 m, the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 is 0.13 m; the height of the second tube body 120 is 0.12 m; the material of the first tube body 110 is silica gel, and the height of the first tube body 110 is 0.3 m. The height of the stirring paddle 420 is 0.04 m, the diameter is 0.14 m, and the stirring speed is 100 rpm.

[0101] 2. Acid-base decolorization test was carried out on the liquid phase of 0.8% sodium carboxymethyl cellulose solution in the stirring device with the ratio of the diameter of the draft tube structure 100 to the diameter of the stirring tank 201 being 0.375, 0.5 and 0.67, respectively, the mixing time of the fluid was measured, and the result data shown in Table 2 were obtained.

[0102] Table 2 Mixing time of fluid at different ratios of diameter of draft tube structure 100 to diameter of stirring tank 201

[0103]

[0104] 3. Result analysis: From the data in Table 2, it can be seen that the larger the ratio of the diameter of the draft tube structure 100 to the diameter of the stirring tank 201, the longer the mixing time of the fluid, and the lower the mixing efficiency of the fluid.

[0105] Example group 3

[0106] 1. Selection of stirring device: the draft tube structure 100 is configured as a composite structure with two second tube bodies 120 and one first tube body 110, and the stirrer 400 is configured as two stirring paddles 420, each of which is provided with a second tube body 120. The elastic member 320 is a stainless steel spring, the length of the elastic member 320 is 0.06 m, and the wire diameter is 0.006 m. The diameter of the stirring tank 201 is 0.48 m, the height is 1 m, and the fluid height in the stirring tank 201 is kept at 0.8 m. The height of the draft tube structure 100 is 0.34 m, 0.54 m and 0.64 m respectively, the diameter of the draft tube structure 100 is 0.24 m, the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 is 0.13 m; the height of the second tube body 120 is 0.12 m; the material of the first tube body 110 is silica gel, and the height of the first tube body 110 is 0.3 m. The height of the stirring paddle 420 is 0.04 m, the diameter is 0.14 m, and the stirring speed is 100 rpm.

[0107] 2. The liquid phase in the stirring device with the ratio of the height of the draft tube structure 100 to the height of the stirring tank 201 being 0.425, 0.675 and 0.8 respectively was 0.8% sodium carboxymethyl cellulose solution, and the acid-base decolorization test was carried out, the mixing time of the fluid was measured, and the result data shown in Table 3 was obtained.

[0108] Table 3 Mixing time of fluid under different ratio of height of draft tube structure 100 to height of stirring tank 201

[0109]

[0110] 3. Result analysis: from the data in Table 3, it can be seen that the larger the ratio of the height of the draft tube structure 100 to the height of the stirring tank 201, the shorter the mixing time of the fluid, and the higher the fluid mixing efficiency.

[0111] Example group 4

[0112] 1. Selection of stirring device: the draft tube structure 100 is configured as a composite structure having two second tube bodies 120 and one first tube body 110, and the stirrer 400 is configured as two stirring paddles 420, each of which is provided corresponding to a second tube body 120. The elastic member 320 is a stainless steel spring, the length of the elastic member 320 is 0.06 m, and the wire diameter is 0.006 m. The diameter of the stirring tank 201 is 0.48 m, the height is 1 m, and the fluid height in the stirring tank 201 is kept at 0.8 m. The height of the draft tube structure 100 is 0.54 m, the diameter of the draft tube structure 100 is 0.24 m, the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 is 0.08 m, 0.13 m and 0.16 m respectively; the height of the second tube body 120 is 0.12 m; the material of the first tube body 110 is silica gel, and the height of the first tube body 110 is 0.3 m. The height of the stirring paddle 420 is 0.04 m, the diameter is 0.14 m, and the stirring speed is 100 rpm.

[0113] 2. Acid-base decolorization test was carried out on the liquid phase of 0.8% sodium carboxymethyl cellulose solution in the stirring device with the ratio of the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 to the diameter of the stirring tank 201 being 0.167, 0.271 and 0.333 respectively, the mixing time of the fluid was measured, and the result data shown in Table 4 was obtained.

[0114] Table 4 Mixing time of fluid at different ratios of distance between bottom of draft tube structure 100 and bottom of stirring tank 201 to diameter of stirring tank 201

[0115]

[0116]

[0117] 3. Result analysis: from the data in Table 4, when the ratio of the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 to the diameter of the stirring tank 201 is less than 0.25, the mixing time of the fluid reaches 38 s; when the ratio of the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 to the diameter of the stirring tank 201 is within 0.25-0.5, the mixing time of the fluid is shorter, and the fluid mixing efficiency is higher.

[0118] Example group 5

[0119] 1. Selection of stirring device: the draft tube structure 100 is configured as a composite structure having two second tube bodies 120 and one first tube body 110, and the stirrer 400 is configured as two stirring paddles 420, each of which is provided corresponding to a second tube body 120. The elastic member 320 is a stainless steel spring, the length of the elastic member 320 is 0.06 m, and the wire diameter is 0.006 m. The diameter of the stirring tank 201 is 0.48 m, the height is 1 m, and the fluid height in the stirring tank 201 is kept at 0.8 m. The height of the draft tube structure 100 is 0.54 m, the diameter of the draft tube structure 100 is 0.28 m, and the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 is 0.13 m; the height of the second tube body 120 is 0.12 m; the material of the first tube body 110 is silica gel, and the height of the first tube body 110 is 0.3 m. The height of the stirring paddle 420 is 0.04 m, the diameter is 0.1 m, 0.14 m and 0.18 m, and the stirring speed is 100 rpm.

[0120] 2. Acid-base decolorization test was carried out on the liquid phase of 0.8% sodium carboxymethyl cellulose solution in the stirring device with the ratio of the diameter of the draft tube structure 100 to the diameter of the stirring paddle 420 being 2.80, 2.00 and 1.56, respectively, the mixing time of the fluid was measured, and the result data shown in Table 5 were obtained.

[0121] Table 5 Mixing time of fluid at different ratios of diameter of draft tube structure 100 to diameter of stirring paddle 420

[0122]

[0123] 3. Result analysis: From the data in Table 5, it can be seen that as the ratio of the diameter of the draft tube structure 100 to the diameter of the stirring paddle 420 decreases, the mixing time of the fluid becomes shorter, and the fluid mixing efficiency becomes higher.

[0124] Example group 6

[0125] 1. Selection of stirring device: the draft tube structure 100 is configured as a composite structure having two second tube bodies 120 and one first tube body 110, and the stirrer 400 is configured as two stirring paddles 420, each of which is provided corresponding to a second tube body 120. The elastic member 320 is a stainless steel spring, the length of the elastic member 320 is 0.06 m, and the wire diameter is 0.006 m. The diameter of the stirring tank 201 is 0.48 m, the height is 1 m, and the fluid height in the stirring tank 201 is kept at 0.8 m. The height of the draft tube structure 100 is 0.54 m, the diameter of the draft tube structure 100 is 0.24 m, and the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 is 0.13 m; the height of the second tube body 120 is 0.07 m, 0.12 m and 0.22 m respectively; the material of the first tube body 110 is silica gel, and the height of the first tube body 110 is 0.4 m, 0.3 m and 0.1 m respectively. The height of the stirring paddle 420 is 0.04 m, the diameter is 0.14 m, and the stirring speed is 100 rpm.

[0126] 2. The ratio of the height of the second tube body 120 to the height of the stirring paddle 420 is 10, 7.5 and 2.5 respectively, and the ratio of the height of the first tube body 110 to the height of the second tube body 120 is 5.71, 2.5 and 0.455. The fluid in the stirring device is 0.8% sodium carboxymethyl cellulose solution, and the acid-base decolorization test is carried out, the mixing time of the fluid is measured, and the result data shown in Table 6 is obtained.

[0127] Table 6 Fluid mixing time under different ratios of height of second tube body 120 to height of stirring paddle 420 and height of first tube body 110 to height of second tube body 120

[0128]

[0129] 3. Result analysis: from the data in Table 6, it can be seen that the fluid mixing time of the stirring device is shorter and the fluid mixing efficiency is higher when the ratio of the height of the second tube body 120 to the height of the stirring paddle 420 is 4-16 and the ratio of the height of the first tube body 110 to the height of the second tube body 120 is 1.5-6.

[0130] Example group 7

[0131] 1. Selection of stirring device: the draft tube structure 100 is configured as a composite structure having two second cylinder bodies 120 and one first cylinder body 110, and the stirrer 400 is configured as two stirring paddles 420, each of which is provided corresponding to a second cylinder body 120. The elastic member 320 is a stainless steel spring, the length of the elastic member 320 is 0.06 m, and the wire diameter is 0.006 m. The diameter of the stirring tank 201 is 0.48 m, the height is 1 m, and the fluid height in the stirring tank 201 is kept at 0.8 m. The height of the draft tube structure 100 is 0.54 m, the diameter of the draft tube structure 100 is 0.24 m, and the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 is 0.13 m; the height of the second cylinder body 120 is 0.12 m; the material of the first cylinder body 110 is silica gel, and the height of the first cylinder body 110 is 0.3 m. The height of the stirring paddle 420 is 0.04 m, the diameter is 0.14 m, and the stirring speed is 100 rpm.

[0132] 2. The acid-base decolorization test was carried out on the stirring device with an elastic member 320 amplitude of 0.2 cm, 0.5 cm and 0.8 cm respectively, and the liquid phase was 0.8% sodium carboxymethyl cellulose solution, the mixing time of the fluid was measured, and the result data shown in Table 7 was obtained.

[0133] Table 7 Mixing time of fluid under different amplitudes of elastic member 320

[0134]

[0135] 3. Result analysis: from the data in Table 7, it can be seen that as the amplitude of the elastic member 320 increases, the mixing time of the fluid is shorter, and the mixing efficiency of the fluid is higher.

[0136] From the above, it can be seen that the ratio of the diameter of the draft tube structure 100 to the diameter of the stirring tank 201 is in the range of (0.3-0.6):1, the ratio of the height of the draft tube structure 100 to the height of the stirring tank 201 is in the range of (0.5-0.9):1, the ratio of the distance between the bottom of the draft tube structure 100 and the bottom of the stirring tank 201 to the diameter of the stirring tank 201 is (0.25-0.5):1, the ratio of the diameter of the draft tube structure 100 to the diameter of the stirring paddle 420 is (1.25-2.5):1, the ratio of the height of the draft tube structure 100 to the height of the stirring paddle 420 is (4-16):1, the ratio of the height of the first cylinder body 110 to the height of the second cylinder body 120 is (1.5-6):1, and the mixing time of the fluid in the stirring device is short, the mixing efficiency is high, and the stirring and mixing effect is best when the amplitude of the elastic member 320 is 0.3 cm-1.5 cm.

[0137] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0138] The foregoing description is intended only to provide specific embodiments of the present disclosure, which will enable those skilled in the art to understand and implement the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure is not intended to be limited to the embodiments shown herein, but rather to be construed in the broadest manner consistent with the principles and novel features disclosed herein.

Claims

1. A guide tube structure, characterized in that: It comprises a first cylinder and at least two second cylinders, wherein the first cylinder is flexible, the second cylinder is rigid, and the first cylinder is arranged between two adjacent second cylinders; The guide tube structure is arranged on the stirring device, and the stirring device includes an elastic connection component, and the elastic connection component is used to connect the second cylinder of the guide tube structure and the device body of the stirring device.

2. The guide tube structure according to claim 1, characterized in that: The ratio of the axial dimension of the first cylinder to the axial dimension of the second cylinder is (1.5-6):1; and / or, The maximum radial dimension of the first cylinder is the same as the maximum radial dimension of the second cylinder.

3. The guide tube structure according to claim 1, characterized in that: The inner side surface of the first cylinder is any one of a flat surface, a wavy surface, a toothed surface or a special-shaped curved surface; and / or, The outer side surface of the first cylinder is any one of a flat surface, a wavy surface, a toothed surface or a special-shaped curved surface.

4. A stirring device, characterized in that: include: The device body has a stirring tank for accommodating the material to be stirred; The guide tube structure according to any one of claims 1 to 3, arranged in the stirring tank; An elastic connection assembly, used to connect the second cylinder of the guide cylinder structure and the device body; as well as The agitator is arranged in the guide tube structure.

5. The stirring device according to claim 4, characterized in that The ratio of the maximum radial dimension of the guide tube structure to the maximum radial dimension of the stirring tank is (0.3-0.6):1; and / or, The ratio of the axial dimension of the guide tube structure to the axial dimension of the stirring tank is (0.5-0.9):

1.

6. The stirring device according to claim 4, characterized in that The ratio of the distance between the bottom of the guide tube structure and the bottom of the stirring tank to the maximum radial dimension of the stirring tank is (0.25-0.5):

1.

7. The stirring device according to claim 4, characterized in that The stirrer includes a stirring shaft, at least two stirring paddles and a driving member, wherein the at least two stirring paddles are arranged on the stirring shaft at intervals along the axial direction of the stirring shaft, and the stirring shaft is connected to the output end of the driving member; At least one stirring paddle is disposed in one of the second cylinders.

8. The stirring device according to claim 7, characterized in that The ratio of the maximum radial dimension of the guide tube structure to the maximum radial dimension of the stirring paddle is (1.25-2.5):1; and / or, The ratio of the axial dimension of the second cylinder to the axial dimension of the stirring paddle is (4-16):

1.

9. The stirring device according to claim 4, characterized in that The elastic connection assembly includes a first connection member, an elastic member and a second connection member connected in sequence, the first connection member is connected to the second cylinder, the second connection member is connected to the device body, and the elastic connection assembly extends radially along the guide tube structure.

10. The stirring device according to claim 9, characterized in that The amplitude of the elastic member is 0.3 cm to 1.5 cm; and / or, The first connecting member, the elastic member and the second connecting member are integrally formed.

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