JPH0331392Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention can be used not only for stirring work in liquid storage tanks in the general industrial field, but also for stirring work by generating water flow when installed in water such as lakes, rivers, moats, etc. Regarding submersible mixers that can be used.

"Conventional technology" Conventionally, in order to improve the efficiency of stirring work in a liquid storage tank, an electric motor for oscillation was attached to a submersible mixer to cause the submersible mixer to perform an oscillating motion, and the direction of the water flow generated by the mixer was periodically changed. It is known what made it so.

``Problems to be Solved by the Invention'' However, the conventional submersible mixer described above requires a separate oscillating motor and control system in addition to the driving motor for the stirring blades, making the device as a whole complicated and expensive. Nakatsuta. Furthermore, when using the mixer in a wide water area such as a lake, river, or moat to generate a purifying water flow, it is actually very difficult to make the submersible mixer perform an oscillating motion using the above method.

``Means for solving the problem'' The submersible mixer of the present invention is capable of oscillating the mixer by using the water flow generated by the submersible mixer itself without using an oscillating motor.
The submersible mixer is mounted on a pedestal that is rotatably supported around a guide bar that is set up in the water, and the submersible mixer is mounted around an axis parallel to the rotational axis of the pedestal at a position that is affected by the water flow generated by the submersible mixer. The present invention is characterized in that a rudder which can be rotated in a direction is attached to the frame, and the direction of the rudder can be changed alternately from one direction to the other direction and vice versa.

"Function" According to the present invention, first, the rudder is arranged so as to make an angle in one direction with respect to the water flow generated by the submersible mixer, so the submersible mixer receives rotational torque and rotates in one direction together with the pedestal, and then When the submersible mixer rotates by a predetermined angle, the rudder automatically changes direction to make an angle in the other direction with respect to the water flow, so the submersible mixer receives rotation torque in the opposite direction and rotates together with the pedestal in the opposite direction. In this way, the submersible mixer performs a reciprocating rotational movement by changing the direction of the rudder every time the submersible mixer rotates by a predetermined angle.

Embodiment FIG. 1 is a side view showing an embodiment of the submersible mixer of the present invention installed in a liquid storage tank, and FIG. 2 is a plan view of the same.

Reference numeral 1 denotes a liquid storage tank, and a hollow support 2 is installed at the bottom of the tank, and a guide bar 4 having a shaft 4' inserted into the hollow part of the support 2 at its lower end is erected thereon. The guide bar 4 is supported on the column 2 by a thrust bearing 3 and is rotatable relative to the column 2. The guide bar 4 has brackets 7 provided vertically at the center of the rear end of the frame structure pedestal 6 on which the submersible mixer 5 is mounted.
7 is fitted and fixed at an appropriate height position on the guide bar 4 by appropriate means. Therefore, submersible mixer 5
is rotatable together with the pedestal 6 about the vertical axis of the guide bar 4 . Note that 8 is a driving electric motor for the submersible mixer, 9 is a stirring blade, and 10 is a draft ring that surrounds the stirring blade and guides the water flow.

A pair of rudders 11 and 11' are attached to both sides of the front end of the pedestal 6 and are rotatable about a vertical axis.
Each rudder 11, 11' has a pin 12 attached to its upper edge and an upper girder 13 of the frame 6 adjacent to the rudder.
It is constantly pulled rearward by a tension spring 15 that is stretched between pins 14 attached to the. Therefore, when the rudders 11, 11' are tilted in either direction from the position where they are aligned with the upper spar 13, they will be tilted significantly relative to the upper spar 13 due to the action of the tension spring 15, as shown in FIG. A pair of rudders 11, 11' are connected by a link (which may be a wire) 16, and when one rudder 11 tilts, the other rudder 11' tilts in the same direction. Rotating shaft 17 of rudder 11, 11'
extends below the pedestal 6, and a horizontally extending lever 18 is fixed to the lower end thereof, while horizontal levers 18 are installed at two positions on the bottom of the liquid storage tank 1 to restrict the rotating range of the submersible mixer. Piles 19, 19' are established which collide with each other and act as a stopper.

Since the submersible mixer of the present invention is constructed as described above, assuming that the rudders 11 and 11' are initially in the positions shown in FIG. In order to receive the water flow sent out, the entire mixer including the pedestal 6 is subjected to a torque that rotates counterclockwise around the guide bar 4. In this way, when the mixer 5 rotates a predetermined angle counterclockwise, the lever 18 contacts the pile 19, and as the mixer continues to rotate, the rudder 11 gradually decreases the inclination angle and finally exceeds the 0° inclination angle position and is pulled. Due to the action of the spring 15, it is tilted sharply in the opposite direction. As the left rudder 11 changes direction, the right rudder 11' is also pulled by the link 16 and changes direction in the same direction. Next, the rudder 11, 11'
When the direction is changed, the right rudder 11' receives the water flow from the mixer, so the mixer 5 starts rotating clockwise. In this way, when the mixer 5 rotates by a predetermined angle clockwise, the lever 8 attached to the rotating shaft of the rudder 11' collides with the pile 19', and through the same process as described above, the rudders 11, 11' change direction to the initial direction. Then, the mixer 5 rotates counterclockwise again. In this way, the mixer can continue its reciprocating rotational movement by changing the direction of the rudders 11, 11' within the angular range regulated by the stakes 19, 19'.
Although the above embodiment has been described as having a pair of rudders on the left and right sides, it is clear that the same effect can be achieved by simply providing one rudder having a similar configuration at the front central portion of the mixer.

``Effect of the invention'' The submersible mixer of this invention has a simple structure and low energy consumption because the rudder automatically changes direction when the mixer rotates at a predetermined angle and can rotate back and forth using the water flow generated by itself. It has the advantage of Furthermore, it is convenient in that an appropriate rotational speed of the mixer can be easily determined based on the relationship between the strength of the water flow generated by the mixer and the angle of the rudder, depending on the properties of the liquid to be stirred, the purpose of generating the water flow, etc.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the submersible mixer of the present invention, and FIG. 2 is a plan view thereof. 4... Guide bar, 5... Submersible mixer, 6...
Frame, 6... Stirring blade, 11, 11'... Rudder,
15... tension spring, 16... link, 17...
Rotating shaft, 18... lever, 19... stopper (pile).

Claims (1)

[Claims for Utility Model Registration] (1) An underwater vehicle comprising a pedestal supported rotatably around a guide bar erected underwater, and a stirring blade mounted on the pedestal and driven by an underwater motor. a mixer, at least one rudder attached to the pedestal so as to be rotatable about an axis parallel to the axis of rotation of the pedestal at a position affected by the water flow generated by the stirring blade; 1. A submersible mixer with an automatic oscillating device, comprising a device for alternating the direction from one direction to the other direction and vice versa. (2) A pair of the rudders are provided on both sides of the mixer, and the direction changing device includes a tension spring stretched between the rudder and the mount, and a lever extending horizontally from the rotation axis of the rudder. The submersible mixer according to claim 1, characterized in that the submersible mixer comprises a stopper fixed in the water and against which the lever collides, and a link connecting the bidirectional rudder.