Automatic dynamic balance stirring device

Abstract

The utility model relates to the field of stirring tanks, and discloses an automatic dynamic balance stirring device. According to the utility model, the paddle comprises a rotating shaft, the rotating shaft is fixedly connected with a paddle, the paddle rotates synchronously with the rotating shaft by taking the rotating shaft as a rotating center, a balancing device is fixedly arranged on the rotating shaft, the balancing device is provided with a balancing cavity, and a counterweight body is arranged in the balancing cavity in a sliding manner; the balance weight body can adjust the dynamic balance of the stirring device through movement in the balance cavity, balance weight adjustment is conducted on the whole stirring device through movement of the balance weight body, and the movable balance weight body moves in time to compensate the unbalance amount along with the change of the rotating speed of the rotating shaft and the unbalance condition of the whole stirring device. The unbalanced state of the stirring device can be effectively inhibited, so that the stirring device tends to be dynamically balanced.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring tanks, in particular to an automatic dynamic balancing stirring device. Background Art

[0002] At present, in the fields of pharmaceuticals, food, and chemicals, a large number of tanks are equipped with stirring devices, among which the main type is a mechanical impeller stirring device, that is, a number of groups of blades are arranged on the rotating shaft to stir the material liquid to achieve the purpose of dissolution, mixing, and anti-precipitation. There is a sealing device between the rotating shaft and the tank body to seal the vacuum or pressure in the tank. During the operation of the stirring device, due to the viscosity of the material or the presence of infiltrates in the solution, they will adhere to the blades, causing the imbalance of the stirring device. This causes a large offset in the center of mass of the entire rotating body, and the blades will generate centrifugal inertia force, causing additional dynamic pressure, which increases the radial force on the bearing and affects the service life of the stirring device. When the speed is high, the deflection caused by the eccentric load is more serious, and even causes the rotating shaft to fail to work normally. Utility Model Content

[0003] The utility model aims to provide an automatic dynamic balancing stirring device, so that when the stirring device is dynamically unbalanced, the counterweight can be adjusted in time by moving the counterweight body, so as to effectively suppress the dynamic unbalance state of the stirring device and increase the service life of the stirring device.

[0004] In order to solve the above technical problems, the implementation method of the utility model provides a technical solution as follows:

[0005] An automatic dynamic balancing stirring device comprises a rotating shaft, to which a paddle is fixedly connected. The paddle rotates synchronously with the rotating shaft with the rotating shaft as the rotation center. A balancing device is fixedly arranged on the rotating shaft. The balancing device is provided with a balancing cavity. A counterweight is slidably arranged in the balancing cavity. The counterweight can adjust the dynamic balance of the stirring device by moving in the balancing cavity.

[0006] Furthermore, the blade includes a petiole and a blade, one end of the petiole is fixedly connected to the axis of the rotating shaft vertically, and the other end is fixedly connected to the blade, and the balancing cavity is arc-shaped, and the balancing cavity is located on a circle with the rotating shaft as the rotation center.

[0007] Furthermore, there are a plurality of petioles, the number of the balancing cavities is the same as that of the petioles, the balancing cavities are respectively arranged between adjacent petioles, and the rotation plane of the petiole is coplanar with the rotation plane of the balancing cavity.

[0008] Furthermore, the balancing device also includes a connecting sleeve, the balancing cavity is fixedly arranged on the periphery of the connecting sleeve, the balancing device is coaxially sleeved and fixed on the rotating shaft through the connecting sleeve, and the rotation plane of the balancing cavity is arranged parallel to the rotation plane of the petiole.

[0009] Furthermore, there are multiple balancing cavities, and the multiple balancing cavities are evenly distributed on a circle with the rotating shaft as the rotation center.

[0010] Furthermore, the balancing device is provided with two groups, and the two groups of balancing devices are symmetrically arranged on the rotating shaft relative to the blades.

[0011] Furthermore, the balancing devices are provided with more than three groups, and the multiple groups of balancing devices are evenly spaced and arranged on the rotating shaft.

[0012] Furthermore, a filling body is provided in the balancing cavity, and the filling body is arranged between the counterweight body and the balancing cavity wall.

[0013] Furthermore, the filling body is a spring symmetrically arranged on both sides of the counterweight body, one end of the spring abuts against the counterweight body, and the other end abuts against the end of the balance chamber.

[0014] Furthermore, it comprises a connecting piece, which comprises a connecting hole and a connecting head axially evenly distributed around the connecting hole, the petiole is fixedly connected to the connecting head, and the connecting piece is fixedly sleeved on the rotating shaft through the connecting hole.

[0015] The automatic dynamic balancing stirring device provided by the utility model is different from the prior art in that the stirring device is prone to overloading and pendulum swing, which causes the problem of reduced service life. By adding a balancing device on the rotating shaft and arranging a movable counterweight on the balancing device, the counterweight of the entire stirring device can be adjusted by moving the counterweight during the use of the stirring device. The movable counterweight can be shifted in time to compensate for the dynamic unbalance amount as the rotation speed changes and the dynamic unbalance condition of the entire stirring device, which can effectively suppress the dynamic unbalance state of the stirring device, make the stirring device tend to dynamic balance, and increase the service life of the stirring device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0017] Figure 1 It is a schematic diagram of the front view of an automatic dynamic balancing stirring device in one embodiment of the utility model;

[0018] Figure 2 It is a schematic diagram of the connection structure of the balancing device, the blades, and the connecting piece in one embodiment of the utility model;

[0019] Figure 3 It is a schematic diagram of a front view of an automatic dynamic balancing stirring device in another embodiment of the utility model;

[0020] Figure 4 It is a schematic diagram of the front view of an automatic dynamic balancing stirring device in a different embodiment of the utility model.

[0021] Explanation of the reference numerals: 1. rotating shaft; 2. blade; 21. petiole; 22. blade; 3. connecting piece; 31. connecting hole; 32. connecting head; 4. balancing device; 41. balancing chamber; 42. counterweight body; 43. filling body; 44. connecting sleeve. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical scheme and advantages of the utility model clearer, the various embodiments of the utility model will be described in detail below with reference to the accompanying drawings. However, it can be understood by those skilled in the art that in the various embodiments of the utility model, many technical details are provided in order to enable readers to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical schemes claimed for protection in the claims of the present application can be implemented.

[0023] In the pharmaceutical, chemical, food, scientific research and other industries, mixing tanks are widely used. Mixing tanks can stir, mix, blend, homogenize, etc. The mixing tank generally includes a tank body, and a stirring device is arranged in the tank body to stir the material in the tank body through the stirring device.

[0024] like Figure 1-4 As shown, in one embodiment of the utility model, an automatic dynamic balancing stirring device comprises a rotating shaft 1, wherein the rotating shaft 1 is penetrated inside the tank body, and both ends of the rotating shaft 1 are rotatably connected to the tank body through bearings, and a paddle 2 is fixedly provided on the rotating shaft 1 inside the tank body; a power device is provided outside the tank body, and the power device is connected to the rotating shaft 1 to drive the rotating shaft 1 to rotate, thereby driving the paddle 2 to rotate inside the tank body, and the main body of the paddle 2 is in contact with the material, and plays a stirring effect on the material in the tank body during the rotation of the paddle 2. In order to reduce the deflection in the process of the rotating shaft 1 driving the paddle 2 to rotate, a balancing device 4 is also provided on the rotating shaft 1, and the balancing device 4 comprises a balancing chamber 41, and a counterweight body 42 is slidably provided in the balancing chamber 41. The counterweight body 42 can adjust the counterweight of the stirring device according to the rotation speed and the deflection degree of the rotating shaft 1 by moving the counterweight body 42 in the balancing chamber 41, thereby suppressing the dynamic imbalance state of the stirring device and effectively adjusting the dynamic balance of the stirring device.

[0025] In one embodiment, an automatic dynamic balancing stirring device includes a connecting member 3, wherein the connecting member 3 includes a connecting hole 31 and connecting heads 32 circumferentially evenly distributed around the connecting hole 31, and there are multiple connecting heads 32. The connecting member 3 is sleeved on the rotating shaft 1 through the connecting hole 31, and the connecting member 3 is fixedly connected to the rotating shaft 1. The blade 2 is fixedly connected to the connecting member 3 through the connecting head 32. The number of the blades 2 is the same as the number of the connecting heads 32. The blades 2 include blades 22 and petioles 21. One end of the petiole 21 is fixedly connected to the connecting head 32 so that the petiole 21 is fixedly connected to the axis of the rotating shaft 1 vertically, and the other end is fixedly connected to the blade 22. The balancing chamber 41 is arc-shaped, and the balancing chamber 41 is located on a circle with the rotating shaft 1 as the rotation center; the fixed connection between the connecting member 3 and the rotating shaft 1 can adopt various methods in the prior art, such as welding, fastener connection, etc.; the fixed connection between the connecting member 3 and the blades 2 can adopt various methods in the prior art, such as welding, fastener connection, etc.

[0026] The balancing device 4 includes a balancing cavity 41, in which a counterweight body 42 is slidably disposed. The counterweight body 42 may be any one of a sphere, an ellipsoid, a cuboid, a cube, etc. Preferably, the shape of the counterweight body 42 is consistent with the cross-sectional shape of the balancing cavity 41, and a filling body 43 is disposed between the counterweight body 42 and the inner wall of the balancing cavity 41. In an exemplary embodiment, the cross-sectional shape of the balancing cavity 41 is circular, the counterweight body 42 is a metal ball slidably disposed in the balancing cavity 41, and the filling body 43 is a spring. In a static equilibrium state, the counterweight body 42 is located in the middle of the balancing cavity 41, and the springs are disposed on both sides of the counterweight body 42, one end of the springs located on both sides abuts against the counterweight body 42, and the other end abuts against the adjacent end of the balancing cavity 41. By utilizing the centrifugal principle of the rotating body, the movable counterweight 42 can be displaced in the circumferential direction in time to compensate for the imbalance according to the change of the rotation speed and the imbalance of the entire rotating body, which can effectively suppress the dynamic imbalance of the stirring device and make the stirring device tend to dynamic balance.

[0027] In one embodiment, the blade 2 is provided with a plurality of balancing chambers 41, the number of the balancing chambers 41 is consistent with the number of the blades 2, the balancing chambers 41 are uniformly distributed circumferentially with the rotating shaft 1 as the rotation center, the ends of the balancing chambers 41 are fixedly connected to the petiole 21, the balancing device 4 is statically balanced relative to the rotating shaft 1, and the balancing device 4 is in the same rotation plane as the petiole 21. The cross section of the balancing chamber 41 can be any of a circular, rectangular, and elliptical shape, and of course, its cross section can also be other cross-sectional shapes.

[0028] In one embodiment, the balancing device 4 is separately arranged from the blade 2, and the balancing device 4 is separately arranged from the blade 2 along the axial direction of the rotating shaft 1, that is, the balancing device 4 is fixedly arranged on the rotating shaft 1 through a connecting sleeve 44 with the rotating shaft 1 as the rotation center, the rotation plane of the balancing device 4 is arranged parallel to the rotation plane of the petiole 21, the connecting sleeve 44 is located above or below the connecting head 32, and the number of the balancing chambers 41 and the size of the counterweight 42 are set according to the rotation speed of the rotating shaft 1, the weight of the blade 2 and the viscosity of the material to be mixed. The connecting sleeve 44 can be fixed to the rotating shaft 1 in various ways in the prior art, such as welding fixation, fastener fixation, etc.

[0029] In one embodiment, the balancing device 4 includes a connecting seat, and a plurality of balancing cavities 41 fixedly connected to the connecting seat, and the plurality of balancing cavities 41 are evenly distributed on a circumference with the rotating shaft 1 as the rotation center.

[0030] In one embodiment, two groups of balancing devices 4 are provided, and the two groups of balancing devices 4 are symmetrically arranged on the rotating shaft 1 relative to the blades 2 .

[0031] In one embodiment, the balancing devices 4 are provided with more than three groups, and the multiple groups of balancing devices 4 are evenly spaced and arranged on the rotating shaft 1 , and the rotation plane of the balancing devices 4 is perpendicular to the rotating shaft 1 .

[0032] The automatic dynamic balancing stirring device provided by the utility model is different from the prior art in that the stirring device is prone to overloading and pendulum swing, which causes the problem of reduced service life. By adding a balancing device on the rotating shaft and arranging a movable counterweight on the balancing device, the counterweight of the entire stirring device can be adjusted by moving the counterweight during the use of the stirring device. The movable counterweight can be shifted in time to compensate for the dynamic unbalance amount as the rotation speed changes and the dynamic unbalance condition of the entire stirring device, which can effectively suppress the dynamic unbalance state of the stirring device, make the stirring device tend to dynamic balance, and increase the service life of the stirring device.

[0033] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present invention, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present invention.

Claims

1. An automatic dynamic balancing stirring device, characterized in that: The invention comprises a rotating shaft (1), wherein the rotating shaft (1) is fixedly connected with a paddle (2), wherein the paddle (2) rotates synchronously with the rotating shaft (1) with the rotating shaft (1) as the rotation center, and wherein a balancing device (4) is fixedly arranged on the rotating shaft (1), wherein the balancing device (4) is provided with a balancing cavity (41), wherein a counterweight (42) is slidably arranged in the balancing cavity (41), and wherein the counterweight (42) can adjust the dynamic balance of the stirring device by moving in the balancing cavity (41).

2. The automatic dynamic balancing stirring device according to claim 1, characterized in that: The blade (2) comprises a petiole (21) and a blade (22); one end of the petiole (21) is fixedly connected to the axis of the rotating shaft (1) at a right angle, and the other end is fixedly connected to the blade (22); the balancing chamber (41) is arc-shaped, and the balancing chamber (41) is located on a circle with the rotating shaft (1) as the rotation center.

3. The automatic dynamic balancing stirring device according to claim 2, characterized in that: There are a plurality of petioles (21), the number of the balancing cavities (41) is the same as that of the petioles (21), the balancing cavities (41) are respectively arranged between adjacent petioles (21), and the rotation plane of the petiole (21) is coplanar with the rotation plane of the balancing cavity (41).

4. The automatic dynamic balancing stirring device according to claim 2, characterized in that: The balancing device (4) further comprises a connecting sleeve (44), the balancing chamber (41) being fixedly arranged on the periphery of the connecting sleeve (44), the balancing device (4) being coaxially sleeved and fixed on the rotating shaft (1) through the connecting sleeve (44), and the rotation plane of the balancing chamber (41) being arranged parallel to the rotation plane of the petiole (21).

5. The automatic dynamic balancing stirring device according to claim 4, characterized in that: There are a plurality of balancing chambers (41), and the plurality of balancing chambers (41) are evenly distributed on a circumference with the rotating shaft (1) as the rotation center.

6. The automatic dynamic balancing stirring device according to claim 4, characterized in that: The balancing device (4) is provided with two groups, and the two groups of the balancing device (4) are symmetrically arranged on the rotating shaft (1) relative to the blades (2).

7. The automatic dynamic balancing stirring device according to claim 4, characterized in that: The balancing devices (4) are provided with more than three groups, and the multiple groups of balancing devices (4) are evenly spaced and arranged on the rotating shaft (1).

8. The automatic dynamic balancing stirring device according to claim 1, characterized in that: A filling body (43) is provided in the balancing cavity (41), and the filling body (43) is arranged between the counterweight body (42) and the wall of the balancing cavity (41).

9. The automatic dynamic balancing stirring device according to claim 8, characterized in that: The filling body (43) is a spring symmetrically arranged on both sides of the counterweight body (42), one end of the spring abuts against the counterweight body (42), and the other end abuts against the end of the balance chamber (41).

10. The automatic dynamic balancing stirring device according to any one of claims 2 to 7, characterized in that: The invention comprises a connecting member (3), wherein the connecting member (3) comprises a connecting hole (31) and connecting heads (32) axially evenly distributed on the periphery of the connecting hole (31); the petiole (21) is fixedly connected to the connecting head (32); and the connecting member (3) is fixedly sleeved on the rotating shaft (1) through the connecting hole (31).

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