Stirring device and stirring method

Abstract

To provide an agitation device and an agitation method where agitation state in an agitation vessel can be sufficiently visible and material charge and agitation vessel washing can be easily performed.SOLUTION: An agitation device comprises: a window part 11 at least visual inside at a side surface; a substantially cylindrical agitation vessel 10 with an open top surface; a revolving or rotating agitation blade installed inside from an adhesion part at one surface of a lid part 20; a material charge part 21 at the other surface of the lid part; and a drive part 22 to elevate the agitation vessel at an upper limit position, an intermediate position and a lower limit position. The adhesion part of the lid part adheres to the side wall upper surface of the agitation vessel at least at the upper limit position and the intermediate position and the lid part and the agitation vessel are separated at the lower limit position and the top surface of the agitation vessel is open.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an agitation device and an agitation method for agitating two liquids, one liquid and one liquid containing a solid, or one liquid containing a solid and another liquid containing a solid. [Background technology]

[0002] Agitators are used to atomize and mix liquids or mixtures of liquids and solids in cosmetics, food, chemicals, or pharmaceuticals. The agitator consists of a roughly cylindrical mixing vessel in which a rotating blade attached to a rotating shaft rotates to mix the material, and a drive unit for rotating the rotating shaft.

[0003] Since the degree of mixing varies depending on the material being mixed and the time, it is desirable to be able to check the degree of mixing in the mixing tank.

[0004] Patent Document 1 describes a configuration in which the inside of the stirring vessel can be checked through a viewing window provided in the lid of the stirring vessel. [Prior art documents] [Patent documents]

[0005] Patent document 1: Patent No. 5264635 Summary of the Invention [Problem to be solved by the invention]

[0006] However, there is a problem in that it is difficult to fully check the inside of the mixing tank all the way to the bottom through the sight window provided in the cover at the top of the mixing tank as described in Patent Document 1. To address this, for example, if a sight window is provided on the side of the mixing tank, it becomes easier to check the inside of the mixing tank, but in that case, the material inlet provided at the top of the mixing tank is above eye level, which creates a problem in that it is difficult to add materials.

[0007] The present invention aims to solve the above problems, to enable sufficient visual confirmation of the mixing status inside the mixing tank, and to facilitate the addition of materials and cleaning of the mixing tank. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention provides a stirring device for stirring two liquids, one liquid and one liquid containing a solid, or one liquid containing a solid and another liquid containing a solid, the device comprising: a substantially cylindrical stirring tank having a window portion on at least one side through which the interior can be seen and an open top; a lid having a contact portion on one surface thereof that can be in close contact with the upper surface of the side wall of the stirring tank; A rotating or rotating stirring blade provided inside the contact portion on the one surface of the lid portion; a material input portion provided on the other surface of the lid portion; a lid intermediate position stopper that is supported by the stirring tank and moves up and down only between an upper limit position and an intermediate position, and that prevents the lid from descending to a lower limit position; a drive unit that raises and lowers the stirring tank to an upper limit position, an intermediate position, and a lower limit position, At the lower limit position, the lid and the agitation tank are separated and the top surface of the agitation tank is open, As the stirring tank rises from the lower limit position, it comes into contact with the lid portion, which is prevented from descending at the intermediate position. The contact portion of the lid is in close contact with the upper surface of the side wall of the mixing vessel. , and then the lid portion is pushed up to the upper limit position. The present invention provides a stirring device characterized by the above.

[0009] With this configuration, a window through which the interior can be seen is provided on at least the side of the mixing tank, and at the upper limit position, which is close to the operator's line of sight, the mixing status inside the mixing tank can be fully seen, at the intermediate position, it is easy for the operator to add materials to the material input section, and at the lower limit position, the lid can be separated, making it easy to clean the mixing tank.

[0010] The stirring device may be configured such that the other surface of the lid is provided with a rotary drive unit that rotates or turns the stirring blade, and the stirring tank is raised from the lower limit position to the intermediate position, thereby storing the stirring blade within the stirring tank.

[0011] With this configuration, the other surface of the lid is provided with a rotation drive unit that rotates or turns the agitator blade, making it possible to rotate or turn the agitator blade with a simple configuration. Furthermore, since the agitator blade is not present inside the agitator tank at the lower limit position and is exposed, it is easy to clean the inside of the agitator tank and the agitator blade, and at the intermediate position, the agitator blade is stored inside the agitator tank, making it possible to rotate or turn the agitator blade for agitation.

[0012] The stirring device may be configured so that as the stirring tank rises from the intermediate position to the upper limit position, the lid portion adheres to the upper surface of the side wall of the stirring tank, and the lid portion and the rotation drive unit rise together with the stirring tank.

[0013] With this configuration, the lid portion and the rotary drive portion are both raised to the upper limit position, so that the stirring blades can be rotated or turned both at the upper limit position and during the rise from the intermediate position to the upper limit position.

[0014] The stirring device may be configured so that as the stirring tank descends from the upper limit position to the intermediate position, the lid portion adheres to the upper surface of the side wall of the stirring tank, and the lid portion and the rotation drive unit descend together with the stirring tank.

[0015] With this configuration, the stirring blades can be rotated or turned while the stirring operation is being performed in the stirring tank, even while descending from the upper limit position to the intermediate position, and material can be easily added at the intermediate position.

[0016] The stirring device may be configured to include a lid lowering prevention unit that prevents the lid from lowering when the stirring tank is lowered from the upper limit position to the intermediate position.

[0017] With this configuration, by lowering the stirring tank to an intermediate position while keeping the lid at the upper limit position, the stirring blades on one side of the lid are exposed, allowing maintenance such as cleaning and inspection of the stirring blades to be performed at a high position that is at eye level with the operator.

[0018] The stirring device may be configured such that when the stirring tank is at its lowest position, the stirring tank can be tilted at least sideways.

[0019] This configuration makes it easier to discharge materials from the mixing vessel at the lowermost position and to clean the inside of the mixing vessel.

[0020] An agitation device, wherein the agitation tank is at an upper limit position to an intermediate position, The contact portion of the lid is in close contact with the upper surface of the side wall of the mixing vessel. The inside of the stirring tank may be configured to be capable of being evacuated to a vacuum.

[0021] This configuration makes it easier to stir and emulsify some materials.

[0022] The stirring device may be configured to include a display and operation unit that can adjust at least the vertical angle or height according to whether the stirring tank is in the upper limit position, the intermediate position, or the lower limit position.

[0023] With this configuration, the display operation unit can be easily viewed and operated regardless of whether the stirring tank is in the upper limit position, the intermediate position, or the lower limit position.

[0024] In order to solve the above problems, the present invention provides a stirring method in a stirring device equipped with a stirring tank for stirring two liquids, one liquid and one liquid containing a solid, or one liquid containing a solid and another liquid containing a solid, the method comprising: the agitation tank has a visible window portion on at least a side surface thereof, and the agitation tank can be raised and lowered to an upper limit position where an operator can view the inside of the agitation tank through the window portion, an intermediate position where materials are added to the agitation tank, and a lower limit position where the top surface of the agitation tank is open and the agitation tank can be tilted sideways, a material charging step of positioning the stirring tank at an intermediate position and charging a material into a material charging portion; a stirring step of raising the stirring tank to an upper limit position and stirring; a cleaning step of lowering the stirring tank to a lower limit position and cleaning the inside of the stirring tank; Equipped with At least at the upper limit position and the intermediate position The adhesive part on the lid is The stirring tank side The present invention provides a stirring method characterized by close contact with the upper surface of the wall.

[0025] With this configuration, a window through which the interior can be seen is provided on at least the side of the mixing tank, and at the upper limit position close to the operator's line of sight, the mixing status inside the mixing tank can be fully seen, at the intermediate position it is easy for the operator to add material to the material input section, and at the lower limit position the lid and mixing blades are separated, making it easy to clean the mixing tank.

[0026] The method may further include an intermediate position stirring step of positioning the stirring tank at an intermediate position and stirring the mixture before or after the stirring step.

[0027] This configuration allows the intermediate position stirring step to be carried out without waiting for the container to rise to the upper limit position or even after it has descended from the upper limit position, thereby enabling efficient operation. [Effects of the Invention]

[0028] The stirring device and stirring method of the present invention allow the stirring status inside the stirring tank to be fully visible at the upper limit position, materials to be added at the intermediate position, and the inside of the stirring tank to be cleaned at the lower limit position. [Brief explanation of the drawings]

[0029] [Figure 1] FIG. 1 is a diagram showing the stirring vessel of the stirring device in Example 1 of the present invention at the upper limit position. [Figure 2] FIG. 1 is a diagram showing the agitation vessel of the agitation device in Example 1 of the present invention at an intermediate position. [Figure 3] FIG. 1 is a diagram showing the agitation tank of the agitation device in Example 1 of the present invention at the lower limit position. [Figure 4] FIG. 1 is a diagram showing the stirring vessel of the stirring device in Example 1 of the present invention turned over at the lowest position. [Figure 5] FIG. 2 is a diagram illustrating a display on a display operation unit of the stirring device according to the first embodiment of the present invention. [Figure 6] FIG. 2 is a diagram illustrating an agitation vessel holder of the agitation device according to the first embodiment of the present invention. [Figure 7] 4A and 4B are diagrams illustrating an intermediate position stopper of the agitator according to the first embodiment of the present invention. [Figure 8] FIG. 3 is a diagram illustrating an upper limit position stopper of the agitator according to the first embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION [Example]

[0030] An agitator according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 8. FIG. 1 is a diagram illustrating the agitator tank of the agitator according to the first embodiment of the present invention in an upper limit position. FIG. 2 is a diagram illustrating the agitator tank of the agitator according to the first embodiment of the present invention in an intermediate position. FIG. 3 is a diagram illustrating the agitator tank of the agitator according to the first embodiment of the present invention in a lower limit position. FIG. 4 is a diagram illustrating the agitator tank of the agitator according to the first embodiment of the present invention turned over at the lower limit position. FIG. 5 is a diagram illustrating the display of the display operation unit of the agitator according to the first embodiment of the present invention. FIG. 6 is a diagram illustrating the agitator tank holder of the agitator according to the first embodiment of the present invention. Note that the agitating blades are omitted in FIG. 6. FIG. 7 is a diagram illustrating an intermediate position stopper of the agitator according to the first embodiment of the present invention. FIG. 8 is a diagram illustrating an upper limit position stopper of the agitator according to the first embodiment of the present invention.

[0031] The stirring apparatus 100 in Example 1 includes a generally cylindrical stirring vessel 10 with an open top and windows 11 on the side and bottom surfaces through which the interior can be seen, a generally circular lid 20 with a contact portion (not shown) on one surface that can be brought into contact with the upper surface of the side wall of the stirring vessel 10, a rotating or pivoting stirring blade 23 provided inside the contact portion on one surface of the lid 20, a material input portion 21 on the other surface of the lid 20, and a drive unit (not shown) that raises and lowers the stirring vessel 10 to an upper limit position, an intermediate position, and a lower limit position. In Example 1, the material stirred by the stirring blade in the stirring vessel 10 is discharged into a tank or the like by tilting the stirring vessel 10 sideways at the lower limit position as described below, but it may also be guided to a predetermined tank via a hose (not shown) provided at the bottom of the stirring vessel 10.

[0032] The stirred tank 10 in Example 1 is made of a roughly cylindrical glass with an open top, and the back and part of the bottom are supported by protective metal. Therefore, most of the front and bottom of the outer surface of the stirred tank 10 that is not protected by protective metal functions as a window 11. The glass of the stirred tank 10 is made of double glass, and hot water can be poured between the panes to increase or maintain the temperature inside the stirred tank 10, and cold water can be poured between the panes to decrease or maintain the temperature inside the stirred tank 10.

[0033] In Example 1, the window portion 11 is configured to be provided on the side and bottom surfaces of the stirring tank 10, but this is not necessarily limited to this and can be modified as appropriate. For example, the window portion 11 may be configured to be provided on the side and top surfaces, or at least on the side surfaces. In Example 1, the stirring tank 10 is configured from a substantially cylindrical glass container with an open top, but this is not necessarily limited to this and can be modified as appropriate. For example, the stirring tank 10 may be configured from a substantially polygonal prism-shaped glass container with an open top.

[0034] Furthermore, from the upper limit position to the intermediate position, the lid 20 is in close contact with the agitation tank 10, so the agitation blades 23 can be rotated or turned to agitate the contents of the agitation tank 10, and a vacuum can be drawn inside the agitation tank 10. This allows for efficient agitation depending on the material being agitated.

[0035] In Example 1, the lid part 20 is configured to be in close contact with the stirred tank 10 from the upper limit position to the intermediate position, but this is not necessarily limited to this and can be modified as appropriate. For example, the lid part 20 may be configured to be in close contact with the stirred tank 10 only at the upper limit position and the intermediate position, or the close contact part of the lid part 20 may be configured to be in close contact with the upper surface of the side wall of the stirred tank 10 at least at the upper limit position and the intermediate position.

[0036] A contact portion made of rubber packing is provided around the entire periphery of lid portion 20 on one surface (the surface that contacts the ceiling surface of agitation tank 10) of lid portion 20 so that lid portion 20 can be tightly fitted to the upper surface of the side wall of agitation tank 10. From the upper limit position to the intermediate position, the upper surface of the side wall of agitation tank 10 is tightly fitted to the contact portion of lid portion 20, and agitator blades 23 provided on one surface of lid portion 20 (the surface that contacts the ceiling surface of agitation tank 10) rotate or turn within agitation tank 10 to mix the charged materials.

[0037] A rotation drive unit 22 that rotates or turns the stirring blade 23 is provided on the other surface of the lid unit 20. The rotation drive unit 22 moves up and down integrally with the lid unit 20 as will be described later.

[0038] The mixing vessel 10 is held in the mixing vessel holder 50 (see Figure 6). This mixing vessel holder 50 is fixed to the rail holder 43 and can be raised and lowered along the rails 40, which extend vertically, driven by a drive unit consisting of a motor and a trapezoidal screw (not shown). Operator H raises and lowers the mixing vessel 10 to the upper limit position by touching the touch panel labeled "Upper Limit Position" on the display / operation unit 30. Similarly, operator H raises and lowers the mixing vessel 10 to the upper limit position by touching "Intermediate Position." Furthermore, operator H raises and lowers the mixing vessel 10 to the lower limit position by touching "Lower Limit Position." The top of the mixing vessel 10 shown in Figure 1 is positioned at the upper limit position, 1533 mm above the floor. This position allows operator H to view the inside of the mixing vessel 10 through the window 11 and check the mixing status. Furthermore, at this upper limit position, the mixing status inside the mixing vessel 10 can also be checked through the window 11 at the bottom of the mixing vessel 10.

[0039] In Example 1, the upper limit position is the distance from the floor surface to the top surface of the mixing tank 10 of 1533 mm, but this is not necessarily limited to this and can be changed as appropriate. For example, it may be 1534 mm or more or 1532 mm or less, as long as it is set at a position that allows the operator H to easily view the inside of the mixing tank 10 through the window 11. To change the upper limit position, the position of the upper limit position stopper 42 (see FIG. 8) may be adjusted, as described below.

[0040] The display / operation unit 30 can be angled at least vertically so that the display is easy to see and easy to operate whether the mixing tank 10 is in the upper limit, intermediate position, or lower limit position. For example, the display / operation surface of the display / operation unit 30 can be vertical when the mixing tank 10 is in the upper limit position, the display / operation surface of the display / operation unit 30 can be oriented slightly downward from vertical when the mixing tank 10 is in the intermediate position, and the display / operation surface of the display / operation unit 30 can be oriented significantly downward from vertical when the mixing tank 10 is in the lower limit position. This allows the display to be easy to see and easy to operate whether the mixing tank 10 is in the upper limit, intermediate position, or lower limit position.

[0041] In addition to the vertical angle adjustment, the horizontal angle adjustment may also be possible. This makes the display easier to see and the operation easier. To freely adjust the vertical and horizontal angles, a known angle adjustment jig or the like can be used.

[0042] In the first embodiment, the angle of the display operation surface of the display operation unit 30 in the vertical direction is changeable, but this is not necessarily limited to this and can be changed as appropriate. For example, the display operation panel 30 may be made movable up and down in the vertical direction.

[0043] The top of the mixing tank 10 shown in Figure 2 is positioned at an intermediate position, 962 mm from the floor. This intermediate position is set so that operator H can easily add materials to the material charging section 21. Note that the inside of the mixing tank 10 may be evacuated. In this case, after adding materials to the hopper of the material charging section 21, the cock is turned to open the door separating the mixing tank 10 from the inside of the mixing tank, and the materials are drawn in by the vacuum. After this, to maintain the vacuum, the cock is turned in the opposite direction to close the door separating the mixing tank 10 from the inside of the mixing tank, and the vacuum state inside the mixing tank 10 is maintained.

[0044] In Example 1, the distance from the floor surface to the top surface of the mixing tank 10 at the intermediate position was set to 962 mm, but this is not necessarily limited to this and can be changed as appropriate. For example, it may be set to 963 mm or more or 961 mm or less, as long as it is set at a position that makes it easy for the operator H to input material into the material input section 21.

[0045] The position of the top of the agitation tank 10 shown in Figure 3 is the lowest position, set at 622 mm from the floor. At this lowest position, the top of the agitation tank 10 is open, allowing the interior of the agitation tank 10 to be viewed. In other words, the lid 20, together with the drive unit 22, is held in the middle position by the middle position stopper 41 (see Figure 7) and does not descend to the lowest position. This releases the lid 20 from its tight contact with the top of the agitation tank 10, opening it up.

[0046] In Example 1, the lower limit position was set to 622 mm, which is the distance from the floor surface to the top surface of the agitation tank 10, but this is not necessarily limited to this and can be changed as appropriate. For example, it may be set to 623 mm or more or 621 mm or less, as long as it is set at a position where the operator H can easily visually inspect and clean the inside of the agitation tank 10.

[0047] Furthermore, as shown in Figure 4, at the lowest position, the agitation tank 10 can be tilted sideways, allowing the inside of the agitation tank 10 to be washed and debris and the like to be discharged. Also, washing water can be poured into the agitation tank 10 for washing.

[0048] When the mixing vessel 10 is raised from the lowest position to the intermediate position, By touching the area labeled "Intermediate position" (see Figure 5) on the touch panel, the mixing vessel 10 will rise and reach the intermediate position. It can then be stopped temporarily at the intermediate position. At this time, the top surface of the mixing vessel 10 comes into contact with the contact portion on one side of the lid 20, making a tight seal. Even in this intermediate position, the mixing blades are stored inside the mixing vessel 10, so they can be rotated or turned to mix. It is also possible to evacuate the vessel.

[0049] To raise the mixing vessel 10 from the intermediate position to the upper limit position, touch the area labeled "Upper limit position" (see FIG. 5) on the touch panel of the display / operation unit 30, and the mixing vessel 10 rises to the upper limit position. As the mixing vessel 10 rises, it comes into close contact with the lid 20, and the mixing vessel holder 50 pushes up the rotation drive unit holder 60 that holds the lid 20 and the rotation drive unit 22, so that the mixing vessel 10, lid 20, and rotation drive unit 22 rise together to the upper limit position (see FIG. 7). In other words, only the mixing vessel holder 50 that holds the mixing vessel 10 is driven by the drive unit, while the rotation drive unit holder 60 that holds the lid 20 and the rotation drive unit 22 is pushed up by the mixing vessel holder 50 that holds the mixing vessel 10.

[0050] Next, the positioning of the lid unit 20 and the rotary drive unit 22 at the upper limit position and the intermediate position will be described in detail with reference to Figures 6 to 8. The agitator blade unit 23 is not shown in Figure 6. Here, Figures 7 and 8 are views seen from the rear side. As mentioned above, the drive unit, which is made up of a trapezoidal screw and a motor, raises and lowers the agitator tank holder 50, which holds the agitator tank 10. This allows the agitator tank 10 held by the agitator tank holder 50 to be raised and lowered. The lid unit 20 and the rotary drive unit 22 are held by the rotary drive unit holder 60.

[0051] Furthermore, when the stirring tank 10 and the stirring tank holder 50 are in the intermediate position and the lowest position, the rotation drive unit holder 60 stops at the intermediate position because the intermediate position stopper block 61 at the bottom of the rotation drive unit holder 60 comes into contact with the intermediate position stopper 41 fixed to the rail holder 43, and the rotation drive unit holder 60 cannot descend any further.

[0052] When the agitation tank holder 50 rises from the lower limit position to the intermediate position, the push-up portion 51 of the agitation tank holder 50 slightly pushes up the push-up portion corresponding block 63 of the rotational drive unit holder 60. The upper surface of the side wall of the agitation tank 10 then comes into close contact with the contact portion of the lid 20. Next, when the agitation tank holder 50 rises from the intermediate position to the upper limit position, the push-up portion 51 of the agitation tank holder 50 pushes up the push-up portion corresponding block 63 of the rotational drive unit holder 60, causing the agitation tank 10, lid 20, and rotational drive unit 22 to rise together. When the agitation tank 10 rises to the upper limit position, the upper limit stopper block 62 fixed to the rotational drive unit holder 60 comes into contact with the upper limit stopper 42 and stops. The agitation tank 10 cannot rise any further.

[0053] When the mixing vessel holder 50 descends from the upper limit position, the mixing vessel 10 and the lid 20 remain in close contact, and the mixing vessel 10 held by the mixing vessel holder 50 also begins to descend. In other words, the rotation drive unit holder 60, whose upward force from the mixing vessel holder 50 has been released, descends together with the mixing vessel holder 50, and at the same time, the lid 10 and the rotation drive unit 22 also descend together. When the mixing vessel holder 50 descends to the intermediate position and stops, the intermediate position stopper 41 supported by the rail holder 43 comes into contact with the intermediate position stopper block 61 fixed to the rotation drive unit holder 60, preventing it from descending any further.

[0054] When the stirring vessel holder 50 descends further from the intermediate position, the tight contact between the lid 20 and the upper surface of the side wall of the stirring vessel 10 is released, and the lid 20 and the rotary drive unit 22 remain in the intermediate position, while only the stirring vessel 10 and the stirring vessel holder 50 descend to the lowest position, thereby releasing the tight contact between the stirring vessel 10 and the lid 20. When the stirring vessel 10 descends to the lowest position and is separated from the lid 20, the inside of the stirring vessel 10 can be easily cleaned. Furthermore, because the stirring blade 23 is exposed from the stirring vessel 10, the stirring blade 23 can also be easily cleaned.

[0055] Thus, in Example 1, an agitation device for agitating liquids, liquids and liquids containing solids, or liquids containing solids and liquids containing solids comprises: a substantially cylindrical agitation vessel having a window portion on at least one side through which the interior can be seen and an open top; a lid having a contact portion on one side that can come into contact with the upper surface of the side wall of the agitation vessel; a rotating or pivoting agitation blade provided inside the contact portion on the one side of the lid; a material input portion on the other side of the lid; and a drive unit that raises and lowers the agitation vessel to an upper limit position, an intermediate position, and a lower limit position; wherein the contact portion of the lid is in contact with the upper surface of the side wall of the agitation vessel at least at the upper limit position and the intermediate position, and the lid and the agitation vessel are separated and the top of the agitation vessel is open. This agitation device allows sufficient visibility of the agitation status inside the agitation vessel and makes it easy to input materials and clean the agitation vessel.

[0056] Furthermore, in Example 1, there is provided a mixing method in a mixing device equipped with a mixing tank that mixes liquids with each other, a liquid with a liquid containing a solid, or a liquid containing a solid with another liquid containing a solid, wherein the mixing tank has a visible window on at least one side thereof, and the mixing tank is movable up and down to an upper limit position where an operator can see inside the mixing tank through the window, an intermediate position where the operator can add materials to the mixing tank, and a lower limit position where the top of the mixing tank is open and the mixing tank can be tilted sideways, and the mixing method is characterized by comprising: a material charging step of positioning the mixing tank at the intermediate position and adding materials to the material charging part; a mixing step of raising the mixing tank to the upper limit position and mixing; and a cleaning step of lowering the mixing tank to the lower limit position and cleaning the inside of the mixing tank. This mixing method allows the mixing status inside the mixing tank to be fully visible, and makes it easy to add materials and clean the mixing tank. [Example]

[0057] Example 2 of the present invention differs from Example 1 in that it is provided with a lid lowering prevention part that prevents the lid from lowering when the stirring vessel is lowered from the upper limit position.

[0058] In the second embodiment, rail holder 43 is provided with a lid lowering prevention part that can be activated when rotational drive unit holder 60 rises to the upper limit position. This lid lowering prevention part is an electrically operated slide pin, and by inserting it into a slide pin insertion hole provided in rotational drive unit holder 60, rotational drive unit holder 60 can remain at the upper limit position even if mixing vessel holder 50 falls to the intermediate position.

[0059] In the second embodiment, the cover lowering prevention unit is configured as an electric slide pin, but this is not limited to this and can be modified as appropriate. For example, it may be configured as a manual slide pin, or as a hook that fixes the rotation drive unit holder 60 from above so that it cannot move.

[0060] As a result, by lowering the stirring tank holding part 50 holding the stirring tank to an intermediate position while keeping the rotation drive part holding part 60 holding the lid part at the upper limit position, the stirring blade 23 on one side of the lid part becomes exposed, and maintenance such as cleaning and inspection of the stirring blade 23 can be performed at a high position at eye level of the worker H.

[0061] In this way, in Example 2, a lid descent prevention section is provided that prevents the lid from descending when the stirring tank is lowered from the upper limit position to the intermediate position, so that maintenance such as cleaning and inspection of the stirring blades can be performed at a high position, at eye level of the operator. [Industrial Applicability]

[0062] The agitation tank cleaning device and agitation tank cleaning method of the present invention can be widely applied to the field of cleaning of agitation devices that use liquids or mixtures of liquids and solids as raw materials. [Explanation of symbols]

[0063] 10: Mixing vessel 11: Window section 20: Lid section 21: Material input section 22: Rotation drive section 23: Mixing blade 30: Display operation section 40: Rail 41: Intermediate position stopper 42: Upper limit position stopper 43: Rail holding section 50: Mixing vessel holding section 51: Push-up section 60: Rotation drive section holding section 61: Intermediate position stopper block 62: Upper limit position stopper block 63: Push-up section corresponding block 100: Mixing device

Claims

1. A stirring device for stirring a liquid and a liquid, a liquid and a liquid containing a solid, or a liquid containing a solid and a liquid containing a solid, comprising: a substantially cylindrical mixing vessel having a window portion on at least a side surface through which the inside can be viewed and an open top surface; A lid having a contact portion on one surface thereof that can be in close contact with an upper surface of a side wall of the stirring tank; A rotating or rotating stirring blade provided on the inner side of the contact portion on the one surface of the lid portion; A material input portion provided on the other surface of the lid portion; a lid intermediate position stopper that is supported by the mixing tank and moves up and down only between an upper limit position and an intermediate position, and prevents the lid from descending to a lower limit position; A drive unit that raises and lowers the stirring tank to an upper limit position, an intermediate position, and a lower limit position, At the lower limit position, the lid and the agitation tank are separated and the top surface of the agitation tank is open, The stirring device is characterized in that, as the stirring tank rises from the lower limit position, it comes into contact with the lid portion, which is prevented from descending at the intermediate position, so that the contact portion of the lid portion contacts the upper surface of the side wall of the stirring tank, and further, it pushes up the lid portion and rises to the upper limit position.

2. The stirring device described in claim 1, characterized in that the other surface side of the lid portion is provided with a rotary drive unit that rotates or pivots the stirring blade, and the stirring blade is stored in the stirring tank when the stirring tank rises from the lower limit position to the intermediate position.

3. The stirring device according to claim 2, characterized in that as the stirring tank rises from the intermediate position to the upper limit position, the lid portion comes into close contact with the upper surface of the side wall of the stirring tank, and the lid portion and the rotation drive portion rise together with the stirring tank.

4. The stirring device according to claim 2, characterized in that as the stirring tank descends from the upper limit position to the intermediate position, the lid portion comes into close contact with the upper surface of the side wall of the stirring tank, and the lid portion and the rotation drive portion descend together with the stirring tank.

5. 5. The stirring device according to claim 4, further comprising a lid lowering prevention part that prevents the lid from lowering when the stirring tank is lowered from the upper limit position to the intermediate position.

6. 2. The stirring device according to claim 1, wherein the stirring tank is capable of being tilted at least sideways when the stirring tank is in the lower limit position.

7. The stirring device according to any one of claims 1 to 4, characterized in that when the stirring tank is in the intermediate position from the upper limit position, the contact portion of the lid part contacts the upper surface of the side wall of the stirring tank, making it possible to draw a vacuum inside the stirring tank.

8. The stirring device according to any one of claims 1 to 4, characterized in that it is provided with a display operation unit whose at least vertical angle or height can be adjusted according to whether the stirring tank is in the upper limit position, the intermediate position, or the lower limit position.

9. A stirring device for stirring a liquid and a liquid, a liquid and a liquid containing a solid, or a liquid containing a solid and a liquid containing a solid, comprising: a substantially cylindrical mixing vessel having a window portion on at least a side surface through which the inside can be viewed and an open top surface; A lid having a contact portion on one surface thereof that can be in close contact with an upper surface of a side wall of the stirring tank; A rotating or rotating stirring blade provided on the inner side of the contact portion on the one surface of the lid portion; A material input portion provided on the other surface of the lid portion; A drive unit that raises and lowers the stirring tank to an upper limit position, an intermediate position, and a lower limit position; a display operation unit that is adjustable in at least a vertical angle or height in accordance with whether the stirring tank is in the upper limit position, the intermediate position, or the lower limit position; A stirring device comprising:

10. 1. A method for stirring in a stirring apparatus having a stirring tank for stirring a liquid and a liquid, a liquid and a liquid containing a solid, or a liquid containing a solid and a liquid containing a solid, comprising the steps of: The stirring tank has a visible window at least on a side thereof, and the stirring tank can be raised and lowered to an upper limit position where an operator can view the inside of the stirring tank through the window, an intermediate position where materials are added to the stirring tank, and a lower limit position where the top surface of the stirring tank is opened and the stirring tank can be tilted sideways, a material charging step of positioning the mixing tank at an intermediate position and charging a material into a material charging section; a stirring step of raising the stirring tank to an upper limit position and stirring the stirring tank; a cleaning step of lowering the stirring tank to a lower limit position and cleaning the inside of the stirring tank; Equipped with A stirring method characterized in that a contact portion provided on a lid portion contacts closely with an upper surface of a side wall of the stirring tank at least at the upper limit position and the intermediate position.

11. The stirring method according to claim 10, further comprising an intermediate position stirring step of positioning the stirring tank at the intermediate position and stirring the mixture before or after the stirring step.

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