JPS6127656Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a liquid injection device used for cleaning, for example, the deck of a ship.

Generally, this type of liquid ejecting device is provided with a frame body (rotating frame) that is rotatable about a vertical axis relative to a fixed frame, while the frame body supports a nozzle that rotates in a vertical plane, and the frame body While rotating the body and nozzle, pressurized fluid is ejected to clean a wide area. The rotational force of the frame and nozzle is usually obtained from the ejection energy of all or part of the pressurized fluid, but in conventional devices, the rotational speed of the nozzle is constant, so the entire cleaning surface cannot be cleaned. There was a problem that it could not be washed evenly. In other words, if the rotational speed of the frame is constant and the rotational speed of the nozzle is constant, the flow rate will be large for a relatively small area when the nozzle is pointing directly below the nozzle rotational center. , when facing to the side, the flow rate is small for a large area, so a uniform cleaning effect cannot be obtained.

The present invention was devised in view of these problems.The frame body is provided with a width passage branching from the main passage in order to supply pressurized fluid to the nozzle, and the pressurized fluid flowing through this width passage is In a liquid injection device that rotates a nozzle using the energy of It is characterized by being designed to cause the required changes.

The present invention will be described below with reference to the illustrated embodiment. The liquid ejecting device 1 of the present invention comprises a fixed frame 2 and a rotating frame (frame body) 3 rotatably attached to the fixed frame 2.

The fixed frame 2 has a vertical cylindrical shape, and has a flange 4 at its lower end that is fixed to, for example, a frame installed inside the hollow frame, and has a liquid flow path 5 that is open at the lower end.

On the other hand, the rotating frame 3 has an inverted L-shaped main channel 8 consisting of a vertical channel 6 and a horizontal channel 7, and a mounting tube 9 is provided on the lower outer periphery of the vertical channel 6. The lower end of the vertical channel 6 is attached watertightly and rotatably to the inner surface of the channel 5, and a rotation support material 10 such as a bearing washer is placed between the outer surface of the channel 5 and the inner surface of the mounting tube 9.
The rotary frame 3 is rotatably supported on the fixed frame 2 by interposing. In addition, a nozzle 11 is installed at the opening end of the horizontal flow path 7.
The horizontal base end 12 of the nozzle 11 is attached watertightly and rotatably, and a rotation support frame 13 such as a bearing washer is interposed between the outer periphery of the base end 12 and the rotation frame 3, so that the nozzle 11 is connected to the horizontal flow path. It supports rotatably around 7. The nozzle 11 has a downward liquid spout 14
, the flow path 5 forms an inverted U-shape with a vertical flow path 6 and a horizontal flow path 7, and is connected to the jet port 14.

A machine room 15 is installed above the main flow path 8, and a casing 16 is provided on one side of the machine room 15. This casing 16 has openings 17 on each of the upper, lower, left, and right sides.
... and houses the turbine 18 inside. This turbine 18 is attached to the tip of a turbine shaft 19 provided to cross the machine room 15. A crankshaft 20 and a turbine shaft 19 are provided inside the machine room 15 so as to be orthogonal to the turbine shaft 19. For example, the connection is made by a rotation transmission mechanism 23 consisting of a worm 21 and a worm wheel 22. Therefore, the turbine 18
When the crankshaft 20 rotates, the crankshaft 20 also rotates from the turbine shaft 19 via the rotation transmission mechanism 23.

One end of the crankshaft 20 projects outside from the machine room 15, and an eccentric cam plate 25 (eccentricity e) is fixed to the projecting end. One end 27 of a link lever 26 is pivotally attached to a part of the circumferential surface of the eccentric cam plate 25, and the other end 28 of the link lever 26 is pivotally attached to the base end 12 of the nozzle 11. When the link shaft 20 rotates by this link mechanism, the eccentric cam plate 25 rotates, and the link lever 26 reciprocates.
The reciprocating rotation of the link lever 26 causes the nozzle 11 to reciprocate around the horizontal flow path 7 .

It is the energy of the pressurized fluid that provides this reciprocating swirling force to the nozzle 11. That is, a narrow width passage 30 is opened at the bent portion of the vertical passage 6 and the horizontal passage 7 of the main passage 8, and this width passage 30 is connected to the turbine via a conduit 31, a passage control valve 32, and an ejection pipe 33. It communicates with the upper part of 18. When the fluid is ejected from the ejection pipe 33, the turbine 18 rotates, and as a result, the turbine shaft 1 is rotated as described above.
When the eccentric cam plate 25 rotates continuously due to the rotation of the crankshaft 20 and the crankshaft 20, the crank lever 26
As a result, the nozzle 11 reciprocates within a certain angular range.

The speed of this reciprocating rotation obviously differs depending on the flow rate of the fluid ejected from the ejection pipe 33. The present invention attempts to change the rotational speed of the nozzle by controlling the flow rate control valve 32 using the eccentric cam plate 25. As shown in FIG. 5, the flow control valve 32 includes a flow control plunger 35 which is orthogonal to the flow path 34 and has a small diameter portion 35a and a large diameter portion 25b.
The plunger 35 is provided so as to be movable forward and backward.
A cam follower 36 that comes into contact with the eccentric cam plate 25 is provided at the protruding end of the cam follower 36 . The plunger 35 is always biased by a compression spring 37 to position the small diameter portion 35a in the flow path 34, and when pressed by the eccentric cam plate 25, the plunger 35 gradually moves the large diameter portion 35b into the flow path 34.
enter the inside of the tank to reduce the flow rate.

The present invention is constructed as described above, and in actual use, the fixed frame 2 is installed on the top surface of the mount provided inside the hollow frame body, and the fluid supply pipe is connected to the flow path 5 from below. . When the liquid is supplied from this supply pipe to the flow path 5 at high pressure, the liquid passes through the vertical flow path 6, the horizontal flow path 7, and the inside of the nozzle 11, and is ejected from the spout 14. On the other hand, since a part of this liquid will be transmitted through the sub-flow path 30 and rotate the turbine 18, the nozzle 11 will be placed in the area L shown in FIG. It will make a reciprocating turn in the range facing the side.

The rotation speed of the nozzle 11 is determined by the eccentric cam plate 2
5 and the flow rate control valve 32 as follows. Assuming that the nozzle 11 is facing downward when the short diameter portion a of the eccentric cam plate 25 is in contact with the cam follower 36 as shown in FIG. 1, the amount of pushing of the plunger 35 is at its minimum. The flow rate ejected from the ejection tube 33 is maximum, so the nozzle 11 rotates at a high speed and points to the side.
Then, in the process of turning to the side, the plunger 35 is pushed by the long diameter portion b side of the eccentric cam plate 25, and accordingly, the large diameter portion 35b enters into the flow path 34 to reduce the flow rate. As a result, the rotational speed of the nozzle 11 gradually slows down and reaches the lowest value when it reaches the rising end. Then, when the movement moves downward, the speed gradually increases, and when the jet nozzle 14 comes directly below, it becomes the fastest, and the same cycle is repeated thereafter. Therefore, this liquid ejecting device can uniformly clean the near and far parts.

Further, according to the above embodiment, when the nozzle 11 reciprocates, a rotational force is applied to the rotating frame 3 by the reaction force of the liquid jetting force unless the nozzle 11 is facing downward, so a special mechanism is required. The rotary frame 3 can be rotated to uniformly clean the entire surrounding area without washing. Of course, the rotation mechanism of the rotating frame 3 is not a concern of the present invention, and it may be rotated at a constant speed or at an arbitrary speed by a special rotation mechanism. Similarly, the nozzle 11 is
Various mechanisms for rotating are known, and the above embodiment is merely an example. Regardless of the mechanism, a flow rate control valve 32 is provided in the width passage for the pressurized fluid for rotating the nozzle 11, and the flow rate control valve 32 is connected to the nozzle 11.
A similar effect can be obtained by controlling in conjunction with the rotation of.

Control of the flow rate control valve 32 is not limited to the eccentric cam plate 25, but can be performed by a cam plate or a cam having a cam shape corresponding to the required nozzle rotation speed. 6A shows an egg-shaped cam plate 40 having a high speed range T between a high speed range F and a low speed range L, and FIG. A cam profile 41 shown in diagonal lines is provided, which comes into contact with the cam profile 41 shown in diagonal lines.
In the latter case, the crankshaft 20 and the link lever 26 may be connected by a simple rod-shaped link.

In summary, according to the present invention, the flow rate of the pressurized fluid, which is the rotational energy of the nozzle, can be increased or decreased by the flow rate control valve linked to the rotation of the nozzle, thereby slowing down the rotational speed of the nozzle. By changing the rotational speed of the nozzle, such as faster at the closer part and slower at the farthest part, it is possible to give any jetting characteristics. Therefore, if used for cleaning a wide area, a wide area to be cleaned can be efficiently cleaned.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of a liquid ejecting device according to the present invention, and FIGS. 2 and 3 are -
4 is a sectional view taken along the - line in FIG. 2, FIG. 5 is a vertical sectional view of the flow control valve, and FIGS. 6 A and B each control the flow control valve. FIG. 7 is a front view showing another example of the cam. 1... Liquid injection device, 3... Rotating frame (frame body),
8... Main flow path, 11... Nozzle, 18... Turbine, 25... Eccentric cam plate, 30... Width flow path, 32
...flow control valve, 33 ... jet pipe, 36 ... cam follower, 40 ... egg-shaped cam plate, 41 ... cam profile.

Claims (1)

[Claims for Utility Model Registration] (1) A frame body in which a nozzle is rotatably provided is provided with a main channel for supplying pressurized liquid to the nozzle, and a width channel branching from this main channel, In a liquid injection device in which the nozzle is rotated by the energy of pressurized fluid flowing through the flow path, a flow control valve is provided in the width flow path, and the flow control valve is controlled in conjunction with the rotation of the nozzle. A liquid ejecting device characterized in that the rotation speed of the nozzle is changed by changing the rotation speed of the nozzle. (2) The nozzle reciprocates in a substantially vertical plane from just below its center of rotation to the sides, and its rotation speed is fast when the spout is facing downward and slow when it is facing to the side. A liquid injection device according to Claim 1 of the Utility Model Registration Act, in which a nozzle and a flow rate control valve are interlocked.