Submersible stirring device

Abstract

The utility model relates to a submerged type stirring device, which comprises a motor assembly, the motor assembly comprises an annular rotor, a rotating cylinder, a motor shell and a stator assembly, the stator assembly is arranged in the motor shell and is fixedly connected with the motor shell, the rotating cylinder is sleeved on the outer side of the motor shell, the annular rotor is fixedly connected with the rotating cylinder, and the stator assembly is fixedly connected with the rotating cylinder. The stator assembly drives the annular rotor to rotate through magnetic force, the multiple motor assemblies are linearly arranged along the same axis, and the adjacent motor shells are fixed in position and detachably connected. According to the submersible stirrer, the rotating cylinder is suspended and driven by magnetic force, and the rotating cylinder and the motor shell are not in contact and do not need dynamic sealing, so that the sealing performance is improved, and fluid is prevented from entering the submersible stirrer or impurities are prevented from entering the fluid; the number and the axial position of the rotating cylinder can be changed by using different numbers of pipe bodies, so that the adjustment can be carried out according to the condition of a container, and the adaptability of the submerged stirrer to different containers is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to agitator technical field especially a kind of submerged stirring device. BACKGROUND

[0002] The existing submerged agitator is pure mechanical type, the shaft of stirring blade and the shell need to be sealed to prevent the fluid being stirred from entering the submerged type. Since the reliability of dynamic seal is lower than that of static seal, it is easy to cause the fluid to enter the interior of submerged agitator and damage the equipment, or the impurities in the submerged agitator to enter the fluid being stirred and pollute the fluid.

[0003] The existing submerged agitator is integral type, and the position of stirring blade cannot be changed, so it cannot adapt to containers with different depths.

[0004] For the submerged agitator with multiple groups of stirring blades, the speed ratio of stirring blades in different groups is fixed, and the speed ratio cannot be changed according to different stirring fluids, so the stirring effect cannot be further improved. SUMMARY

[0005] The utility model aims at solving the above problems, and provides a submerged stirring device, which solves the above technical problems.

[0006] A submerged stirring device comprises a motor assembly, the motor assembly comprises an annular rotor, a rotating cylinder, a motor shell and a stator assembly, the stator assembly is located inside the motor shell and is fixedly connected with the motor shell, the rotating cylinder is sleeved outside the motor shell, the annular rotor is fixedly connected with the rotating cylinder, the stator assembly drives the annular rotor to rotate through magnetic force, multiple motor assemblies are linearly arranged along the same axis, and the positions of adjacent motor shells are fixed and detachable.

[0007] Further, the rotating cylinder is fixedly connected with the blade outside, the annular rotor is completely located in the rotating cylinder, and the rotating cylinder and the motor shell are made of non-magnetic conductive material.

[0008] Further, it further comprises a connecting pipe, the connecting pipe and the motor shell are linearly arranged along the same axis, two adjacent pipe fittings are fixedly and detachably connected, and the pipe fitting comprises the motor shell and the connecting pipe.

[0009] Further, it further comprises an end cover, the connecting pipe and the motor shell are provided with an internal cavity which penetrates up and down, and the end cover is detachably connected with the lower end of the lowermost pipe fitting.

[0010] It further comprises a top plate, and the top plate is detachably connected with the upper end of the uppermost pipe fitting.

[0011] Further, the motor housing is formed with a first boss at one end, and an inner thread is formed on the inner wall of the other end, and an outer thread is formed on the outer wall of the first boss, and the inner thread and the outer thread of the motor housing are matched.

[0012] Further, the connecting pipe is formed with a second boss at one end, and an inner thread is formed on the inner wall of the other end, and an outer thread is formed on the outer wall of the second boss, and the inner thread and the outer thread of the connecting pipe are matched with the outer thread and the inner thread of the motor housing respectively.

[0013] Further, the end cover is formed with an inner thread, and the inner thread of the end cover is matched with the outer threads of the connecting pipe and the motor housing.

[0014] The top plate is formed with a cylinder penetrating up and down in the middle, and the cylinder is formed with an outer thread, and the outer thread of the cylinder is matched with the inner threads of the connecting pipe and the motor housing.

[0015] Further, an annular boss is formed on the outer side of the motor housing, and the annular boss is located below the rotating cylinder, and the annular boss is used to limit the axial displacement of the rotating cylinder.

[0016] Further, the motor assembly further comprises a first magnetic assembly and a second magnetic assembly, the first magnetic assembly is fixedly connected with the annular boss, the second magnetic assembly is fixedly connected with the rotating cylinder, and the first magnetic assembly drives the second magnetic assembly to move axially by magnetic force.

[0017] Further, the stator assembly comprises a magnetic yoke and a coil, the magnetic yoke is uniformly arranged in a circle, and the coil is sleeved on the outer side of the magnetic yoke.

[0018] The utility model has the following advantages:

[0019] 1. The rotating cylinder and the motor housing are not in contact, and no dynamic seal is needed, which improves the sealing performance, avoids the entry of fluid into the submerged mixer, reduces the possibility of dirt accumulation, and effectively reduces the difficulty of subsequent cleaning of the interior of the mixer.

[0020] 2. Since the magnetic suspension structure is adopted, the cleanliness is improved compared with the mixer with bearings, and the damage to cells is reduced when used as a biological mixer.

[0021] 3. By using different numbers of pipe bodies, the number and axial position of the rotating cylinder can be changed, so that the adaptability of the submerged mixer to different containers is improved.

[0022] 4. Each rotating drum is driven by a stator assembly inside its corresponding motor housing. The speed and direction of rotation of each rotating drum can be adjusted. The speed, speed ratio and direction of rotation of each bladed rotating drum can be adjusted according to the fluid conditions, which improves the stirring effect on different fluids.

[0023] 5. The size, shape, and number of blades of the rotating drum matched with multiple motor housings connected in series can be different to improve the stirring effect;

[0024] 6. The first and second magnetic components work together to provide additional axial force to the rotating cylinder, which drives the rotating cylinder to return to its normal position after axial displacement. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only one embodiment of this utility model. For those skilled in the art, other embodiments can be derived from the provided drawings without creative effort.

[0026] Figure 1 : A 3D view of a submersible mixer;

[0027] Figure 2 : A 3D view of the submersible mixer and its container;

[0028] Figure 3 : Cross-sectional view of the submersible mixer and tank;

[0029] Figure 4 : Figure 3 Sectional view at point A in the middle. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and examples:

[0031] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0032] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the terms "mount", "connect", "connection" should be understood broadly, for example, it can be fixed connection, also can be detachable connection, or integrally connected, it can be direct connection, also can be indirect connection through intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to specific circumstances.

[0033] In the description of the utility model, it is necessary to understand that, the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0034] As shown in Figures 1 to 4 A submerged stirring device, comprising: motor assembly, the motor assembly includes annular rotor 4, rotating cylinder 5, motor shell 6 and stator assembly, the stator assembly is located inside motor shell 6 and is fixedly connected with motor shell 6, the rotating cylinder 5 is sleeved on the outside of motor shell 6, the annular rotor 4 is fixedly connected with rotating cylinder 5, the stator assembly drives annular rotor 4 to rotate by magnetic force, a plurality of motor assemblies are linearly arranged along the same axis, and the adjacent motor shells 6 are fixedly and detachably arranged. The motor shell 6 can be directly connected or indirectly connected through other connecting pieces.

[0035] Further, one end of the motor shell 6 is formed with a first boss 61, and the inner wall of the other end is formed with an internal thread, the outer wall of the first boss 61 is formed with an external thread, and the internal thread and the external thread of the motor shell 6 are matched. Two motor shells 6 can be fixed by threads (without connecting pipe 7 in the middle) directly, or other detachable fixing methods such as clamping, quick-mount chuck connection and flange connection can be used for direct fixing.

[0036] The annular rotor 4 can be a whole annular magnet, or a plurality of magnets arranged in a ring.

[0037] Further, the rotating cylinder 5 is fixedly connected with the blade 52 on the outside, and the blade 52 is used for stirring fluid, and the number and shape of the blade 52 of each motor assembly can be the same or different, so that better stirring effect is achieved by the blades 52 of the plurality of rotating cylinders 5.

[0038] Further, the annular rotor 4 is completely located in the rotating cylinder 5, that is, the rotating cylinder 5 wraps the annular rotor 4, avoiding the annular rotor 4 from contacting with the fluid outside, avoiding the annular rotor 4 from polluting the fluid, and avoiding the fluid from corroding the annular rotor 4.

[0039] Further, the rotating cylinder 5 and the motor shell 6 are made of non-magnetic conductive material.

[0040] Further, the connecting pipe 7 is arranged linearly along the same axis with the motor shell 6, and the adjacent two pipe fittings are fixed and detachably connected, the pipe fittings including the motor shell 6 and the connecting pipe 7. Several connecting pipes 7 can be located between two motor shells 6, and the axial distance between the two motor shells 6 and the rotating cylinders 5 outside the two motor shells 6 can be changed by the number of the connecting pipes 7, and at this time, the two adjacent motor shells 6 are indirectly connected through the connecting pipe 7.

[0041] Further, one end of the connecting pipe 7 is formed with a second boss 71, and the inner wall of the other end is formed with an internal thread, and the outer wall of the second boss 71 is formed with an external thread, and the internal thread and the external thread of the connecting pipe 7 are respectively matched with the external thread and the internal thread of the motor shell 6.

[0042] In addition to the threaded connection and fixation between the connecting pipes 7 and between the connecting pipe 7 and the motor shell 6, other detachable fixation modes such as clamping, quick-mount chuck connection, and flange connection can also be used.

[0043] Further, the end cover 63 is provided, and the connecting pipe 7 and the motor shell 6 are internally provided with an upper and lower through cavity, and the end cover 63 is detachably connected with the lower end of the lowermost pipe fitting. The upper and lower through of the connecting pipe 7 and the motor shell 6 facilitates the upward penetration of the electric wire. The end cover 61 is detachably connected with the lower end of the lowermost pipe fitting. The end cover 61 is used to block the internal cavity of the motor shell 6 or the connecting pipe 7, and plays a sealing role, avoiding the fluid outside from entering the internal cavity of the motor shell 6 or the connecting pipe 7.

[0044] Further, the top plate 72 is provided, and the lower end of the top plate 72 is detachably connected with the upper end of the uppermost pipe fitting. The top plate 72 serves as a connecting piece for connecting the pipe fitting and the barrel 8, and fixes the positions of the two.

[0045] Further, the end cover 63 is formed with an internal thread, and the internal thread of the end cover 63 is matched with the external thread of the connecting pipe 7 and the motor shell 6.

[0046] The middle part of the top plate 72 is formed with an upper and lower through cylinder, and the cylinder is formed with an external thread, and the external thread of the cylinder is matched with the internal thread of the connecting pipe 7 and the motor shell 6.

[0047] It should be noted that the threads of the motor housing 6, the connecting pipe 7 and the end cover 61 are mutually compatible, so that the motor housing 6, the connecting pipe 7, the end cover 61 and the top plate 72 can be threadedly connected with each other.

[0048] Further, the motor housing 6 is formed with an annular boss 62 below the rotating cylinder 5, which is used to limit the axial displacement of the rotating cylinder 5. In order to avoid the rotating cylinder 5 from falling away from the outside of the motor housing 6 due to gravity, the annular boss 62 is used to stop the rotating cylinder 5 from falling further after contact.

[0049] Further, the first magnetic assembly 101 is fixedly connected with the annular boss 62, and the second magnetic assembly 103 is fixedly connected with the rotating cylinder 5, and the first magnetic assembly 101 drives the second magnetic assembly 103 to move axially by magnetic force.

[0050] Optionally, the first magnetic assembly 101 is a magnet, and the second magnetic assembly 103 is also a magnet. At this time, the first magnetic assembly 101 and the second magnetic assembly 103 generate repulsive force, so as to overcome the gravity of the rotating cylinder 5 by magnetic force, and make it float.

[0051] Optionally, the first magnetic assembly 101 includes a soft magnet and an axial coil 102, the axial coil 102 is wound outside the soft magnet, and the second magnetic assembly 103 is a magnet. The axial coil 102 can change the direction of the magnetic force acting on the second magnetic assembly 103 by changing the direction of the current, so as to drive the rotating cylinder 5 to move axially upward or downward according to the position of the rotating cylinder 5; the axial coil 102 can change the size of the magnetic force by changing the size of the current, so as to accurately control the axial position of the rotating cylinder 5.

[0052] More preferably, a sensor and a controller are further included, the sensor is used to detect the axial position of the rotating cylinder 5, and the controller is used to change the direction of the current in the axial coil 102. The position information detected by the sensor is transmitted to the controller, and the controller judges whether the axial coil 102 needs to be energized and the direction of energization.

[0053] Further, the rotating cylinder 5, the motor housing 6, the end cover 61 and the connecting pipe 7 can be made of corrosion-resistant plastic.

[0054] Further, the stator assembly includes a magnetic yoke 1 and a coil, the magnetic yoke 1 is uniformly arranged in a circle, and the coil is sleeved outside the magnetic yoke 1.

[0055] Preferably, the coil includes a suspension coil 2 and a rotation coil 3, the suspension coil 2 is used to drive the annular rotor 4 to float, and the rotation coil 3 is used to drive the annular rotor 4 to rotate.

[0056] Preferably, the magnetic yoke 1 comprises axial arms 11 and radial arms 12, the axial arms 11 and radial arms 12 being fixedly connected, the radial arms 12 pointing towards the annular rotor 4.

[0057] It should be noted that the submersible stirring device can include or not include the barrel 8. When not including the barrel 8, the submersible stirring device is extended into the container containing fluid and fixed with the container. When including the barrel 8, the top plate 72 is fixedly connected with the barrel 8 in a threaded manner, and the fluid can be directly added into the barrel 8.

[0058] During installation, the number of motor housings 6 and rotating cylinders 5 is changed according to the requirements of the stirred fluid and the container, and the spacing between the two rotating cylinders 5 is changed by changing the number of connecting pipes 7 between the two motor housings 6. The depth of the rotating cylinder 5 in the container is changed by changing the number between the motor housing 6 and the top plate 72.

[0059] During operation, the stator assembly drives the annular rotor 4 to rotate, and in turn drives the blades 52 to rotate, thereby stirring the fluid. The rotating cylinder 5 is suspended and does not contact the motor housing 6, and the suspension force of the annular rotor 4 can be provided by the stator assembly and / or the first magnetic assembly 101.

[0060] Since each rotating cylinder 5 is driven by the stator assembly in the corresponding motor housing 6, the rotating speed and rotating direction of each rotating cylinder 5 can be adjusted, so that the rotating cylinder 5 generates the required differential speed to improve the stirring effect on the specific fluid.

[0061] The above has described the present application by way of example, but the present application is not limited to the above specific embodiments, and any modification or variation made based on the present application falls within the scope of the present application.

Claims

1. A submersible mixing device, characterized in that, The utility model relates to a kind of motor assembly, including annular rotor (4), rotating cylinder (5), motor shell (6) and stator assembly, the stator assembly is located inside motor shell (6) and is fixedly connected with motor shell (6), rotating cylinder (5) is sleeved on the outside of motor shell (6), annular rotor (4) is fixedly connected with rotating cylinder (5), the stator assembly drives annular rotor (4) to rotate by magnetic force, multiple motor assemblies are linearly arranged along the same axis, and the position between adjacent motor shell (6) is fixed and detachable. The rotating cylinder (5) is fixedly connected with the blade (52) outside, the annular rotor (4) is completely located in the rotating cylinder (5), and the rotating cylinder (5) and the motor shell (6) are made of non-magnetic material.

2. A submersible mixing device according to claim 1, wherein: It also includes a connecting pipe (7), which is linearly arranged along the same axis with the motor shell (6), and the adjacent two pipe fittings are fixedly and detachably connected. The pipe fittings include the motor shell (6) and the connecting pipe (7).

3. A submersible mixing device according to claim 2, wherein: It also includes an end cover (63), and the connecting pipe (7) and the motor shell (6) have an internal cavity that penetrates from top to bottom. The end cover (63) is detachably connected with the lower end of the lowermost pipe fitting.

4. A submersible mixing device according to claim 3, wherein: It also includes a top plate (72), which is detachably connected with the upper end of the uppermost pipe fitting at the lower end. One end of the motor shell (6) forms a first boss (61), and the inner wall of the other end forms internal threads. The outer wall of the first boss (61) forms external threads. The internal threads and the external threads of the motor shell (6) are compatible.

5. A submersible mixing device as claimed in claim 1, wherein: One end of the connecting pipe (7) forms a second boss (71), and the inner wall of the other end forms internal threads. The outer wall of the second boss (71) forms external threads. The internal threads and the external threads of the connecting pipe (7) are compatible with the external threads and the internal threads of the motor shell (6), respectively.

6. A submersible mixing device according to claim 4, wherein: The end cover (63) forms internal threads, which are compatible with the external threads of the connecting pipe (7) and the motor shell (6). The top plate (72) forms a cylinder that penetrates from top to bottom in the middle. The cylinder forms external threads, which are compatible with the internal threads of the connecting pipe (7) and the motor shell (6). The motor shell (6) forms an annular boss (62) on the outside. The annular boss (62) is located below the rotating cylinder (5). The annular boss (62) is used to limit the axial displacement of the rotating cylinder (5).

7. A submersible mixing device as claimed in claim 1, wherein: The motor assembly also includes a first magnetic assembly (101) and a second magnetic assembly (103). The first magnetic assembly (101) is fixedly connected with the annular boss (62). The second magnetic assembly (103) is fixedly connected with the rotating cylinder (5). The first magnetic assembly (101) drives the second magnetic assembly (103) to move axially by magnetic force.

8. A submersible mixing device according to claim 7, wherein: The first magnetic assembly (101) includes a soft magnet and an axial coil (102). The axial coil (102) is wound around the outside of the soft magnet. The second magnetic assembly (103) is a magnet.

9. A submersible mixing device according to claim 8, wherein: It also includes a sensor and a controller. The sensor is used to detect the axial position of the rotating cylinder (5). The controller is used to change the direction of the current in the axial coil (102). ​ 10. A submersible mixing device according to any one of claims 1 to 9, wherein: The stator assembly comprises a magnetic yoke (1) and coils, the magnetic yoke (1) is arranged uniformly in a circle, and the coils are sleeved outside the magnetic yoke (1).

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