JPH0365490A - Garbage removing device of water jet propulsion device - Google Patents

Abstract

PURPOSE:To rectify water and to improve propulsion efficiency by arranging at least two sheets of garbage removing plates for removing garbage attached to a grill and by providing these removing plates at the upper part of an intake port so that they hold a drive shaft between them. CONSTITUTION:A garbage removing plate 34 is operated, for example, so that it is moved downward by an operating tool such as a lever or the like, and by this, it is moved from the upper part of a grill 35 to the grill side so as to remove garbage attached to the grill 35 portion. Also, in the state where it is stored at the upper part, as the garbage removing plate 34 is provided along the flow direction of water flow, it rectifies the water flow, and further in the case where a rope which has intruded from a grill 25 portion is wound around a drive shaft 18, the removing plate 34 arranged so that it holds the drive shaft 18 prevents the rope further wound into the casing side.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for removing dust attached to a water suction port in a water jet propulsion device.

In conventional water jet propulsion devices, a slatted grill is installed at the bottom of the water intake in order to prevent debris floating in the seawater from getting caught in the impeller in the water passage. There is an inconvenience that dirt adheres to the water and prevents it from absorbing water. Conventionally, in order to remove this adhered dust, a dust removal plate is rotatably interposed between the grates arranged in a grid pattern, and when dust adheres, the plate is rotated. There are devices designed to drop garbage (for example, Utility Model Publication No. 55-30798, Utility Model Publication No. 52-18)
Publication No. 553, Publication of Utility Model Publication No. 55-1999, Publication of Utility Model Publication No. 55-1999
4-2997, etc.). In addition to such rotation, there is also a device that is equipped with a sliding plate that slides along the slatted piece (Utility Model Publication No. 55-1).
(See Japanese Utility Model Publication No. 998, Japanese Utility Model Publication No. 1999-1999).

Problems to be Solved by the Invention In the above-mentioned conventional dust removal device, in the case where a dust removal plate is interposed between each slatted piece and the plate is rotated, the slatted piece and the removal plate are horizontally aligned with each other. Since they are arranged one on top of the other, the area of the suction port decreases accordingly, and if the area of the suction port is to be ensured, the overall size increases. On the other hand, in the case where the sliding piece is made to slide along the slatted piece, the above-mentioned problem can be achieved by storing the sliding piece at one end of the slatted piece when no dust removal operation is being performed. Although this disadvantage of reducing the suction port area can be avoided to some extent, a structure in which only sliding operation is performed has the disadvantage that the dust attached to the grating piece is simply pushed from one end to the other, and the dust removal effect is not sufficient. be. Further, in any of the above-mentioned conventional dust removal devices, no structure is provided to prevent the rope from becoming entangled in the drive shaft in the event that the rope enters between the slatted pieces. In other words, when the lobes that have entered through the gaps between the slats enter the water passage, they are wound around the drive shaft for the impeller installed in the water passage, and due to the winding action of this drive shaft, the rope is pulled onto the drive shaft. The lobe is wound like a pincushion, and the lobe bites between the drive shaft and the casing to stop the drive shaft, or the drive shaft is twisted due to such biting, and the lobe is provided between the casing and the drive shaft. There is the disadvantage that the seal portion is damaged. Furthermore, in the same conventional dust removal apparatus, no one has been considered that is capable of both removing dust and rectifying water flow. Therefore,
A special rectifier plate is required to rectify the water flow.

The present invention provides a dust removal device for a water jet propulsion device that solves these problems.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention includes a water passage for flowing water from a water inlet at the bottom having a slatted grill to a water spout at the rear, and in this water passage, In a water jet propulsion device including an impeller driven by a drive shaft passing above the water intake port, at least two dust removal plates for removing dust attached to the grill are arranged along the water flow, Further, these removal plates are provided above the water intake port so as to be movable to the grill so as to sandwich the drive shaft.

Function: The dust removal plate is operated to move downward by an operating tool such as a lever, and thereby moves from above the grill to the side of the grill to remove dust attached to the grill portion.

In addition, when the dust removal plate is stored in the upper position, the dust removal plate is installed along the direction of water flow.
The water flow is rectified, and if a rope that enters from the grill part wraps around the drive shaft, a removal plate placed to sandwich the drive shaft prevents it from wrapping around the casing any further. prevent.

Embodiment Hereinafter, an embodiment of the present invention will be described. In FIG. 5, (11> is a hull, and the sloping part formed at the rear end of the bottom of the hull (11) has a roughly triangular shape when viewed from the side. A shaped water barrel casing (12) is attached.This water barrel casing (12) has a water intake port (12) at its bottom.
13), and has a water spout (14) on the rear surface.

An impeller case (15) is attached to the rear end surface of the casing (12) so as to be continuous with the water outlet (14), and a nozzle (16) is further attached to the rear end of the impeller case (15). There is. (17) is the hull (11
), and this engine (17
) (18)
The impeller case passes through a passage in the casing (12) from the inclined upper wall of the casing (12).
15> and this impeller case (1
5) an impeller (1) for performing a pumping action in the
9〉 is installed. (20) is the nozzle (16)
A steering deflector (22) is installed at the rear end so as to cover the rear tip of the nozzle (16).
) is a pair of upper and lower backward travel packets placed between the deflector (20) and the nozzle (16), and this bucket) (22) is rotated so as to cover the rear part of the nozzle (16). Then, the direction of the water is changed so that the water jets out forward, causing the vehicle to move backward.

1 and 2 show a more specific structure inside the casing (12). A grill (25) is attached to the water inlet (13) at the bottom of the casing (12) so as to cover the water inlet (13). As shown in Fig. 3, this grille (25>) has a slatted shape in which three slatted pieces (26) (26)... in the left and right direction of the hull are integrally connected so as to be continuous at both the front and rear ends, It is fixed to the casing (12) from below at three bolt holes (27) (27)... In the inclined upper wall (28) of the casing (12),
The bearing that protrudes horizontally toward the inside of the ship is located in the housing (29
) is integrally formed, and in this bearing, a drive shaft (18) passing through the housing (29) is pivotally supported by a bearing (30) in the housing (29), and further on the rear side of this bearing (30). , housing (29
) A water seal (31) is provided between the inner peripheral surface and the drive shaft (18) outer peripheral surface. Casing (12
) near the front end of the upper wall (28) bulges inward (32
〉 A pair of left and right dust removal plates (34) (34) are integrally attached to a shaft (33) in the left and right direction of the hull that is inserted into this bulge (32) and supported pivotally. The tip of the dust removal plate (34) extends backward and diagonally downward from the shaft (33), and then further extends toward the upper wall (2).
8) is bent diagonally upward along the inner wall surface of the casing (1), and as shown in FIG.
2) Drive shirt that penetrates the water passage inside) (18)
The drive shaft (18) is disposed on both left and right sides of the drive shaft (18). A rotatable lever (35) is attached to the protruding end of the shaft (33) on the inside of the ship, and when this lever (35) is rotated to the right in Fig. 1, the shaft (33) and garbage removal play) (3
The tip of 4) rotates downward, and these removal plays) (34) (34
) enters into the gap between the slatted pieces (26) (26)... and scrapes the dirt stuck to this slatted piece (26〉) downward, and the scraped out garbage is removed from the grill (
25) Discharged by a stream of water flowing below. In this case, the dust removal plate (34) has its front end in the direction of water flow as its base and its rear end rotates. We ensure that garbage removal is carried out effectively. Further, the tip of the rear side of the dust removal blade (34) is connected to the cutting blade (3) over a certain length of the tip surface on both sides of the drive shirt (18) and the lower end surface continuous to the tip surface.
6) is formed. That is, the slatted piece (26)
Even if the rope enters into the casing (12) through the gap in (26), is wound around this drive shaft (18), and is wound forward by the pincushion action, the debris removal play) (34) (34 ) to prevent the rope from entering the upper part of the casing (28), and at the same time, if it tries to move forward with a stronger force, it is cut by this cutting blade (36) and the rope is wound up. This is to prevent
The cutting force (36) can also cut floating debris other than the rope, such as algae or seaweed. Furthermore, these garbage removal plays) (34) (34) are water inlets (14).
The water flow flowing along the casing upper wall (28), which is located above the water suction passage and is on the upper side of the water suction passage, is rectified. In general, water sucked in from the water intake port (13) on the bottom side flows more slowly and is more easily disturbed on the upper side than on the lower wall (37) side, but these dust removal plates (34) (34 ) performs a rectifying action, which makes it possible to overcome these inconveniences and improve propulsion efficiency.

In the above example, 2 pieces of garbage removal play) (3
4) (34), but it is not limited to this, and the above two dust removal plates (34) (
Further, another dust removal plate may be added on both sides of the dust removal plates (34), or these dust removal plates (34) (34) may be integrally connected to each other.

Effects of the Invention As described above, according to the present invention, in the normal state, the dust removal plate is arranged in a retracted state above the water intake port provided with a grill, so that it is not necessary to use the conventional rotary type. Compared to the removal device described above, there is no inconvenience that the dust removal plate narrows the water absorption area of the grill part, and therefore, even if the necessary water absorption area is secured, the overall size does not increase. . On the other hand, these dust removal plates are arranged on both sides of the drive shaft so that they sandwich the drive shaft, so even if a lobe that has entered the water passage gets caught up in the drive shaft, the dust removal plates will If the lobes are caught between the casing and the drive shaft and the drive shaft stops, or the drive shaft is twisted and the lobes become stuck between the drive shaft and the casing. This eliminates the inconvenience of damage to the provided seal. In addition, since this dust removal plate is located above the water intake and along the flow direction of the water flow, it rectifies the water in the upper part of the passage where there is a lot of turbulence and improves propulsion efficiency. The effect is that it can be improved.

[Brief explanation of drawings]

Fig. 1 is a longitudinal sectional view of a water barrel casing showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, Fig. 3 is a bottom view of the grill, and Fig. 4 is a garbage FIG. 5 is a perspective view showing the arrangement of the removal plate, and FIG. 5 is a longitudinal sectional view showing the entire water jet propulsion device. (12) (14) (19><34) Patent

Claims (1)

[Claims] A water supply system comprising a water passage for flowing water from a water intake port at the bottom having a slatted grill to a water outlet at the rear, and an impeller driven by a drive shaft passing through the upper part of the water intake port in the water passage. In the jet propulsion device, at least two dust removal plates for removing dust attached to the grill are arranged along the water flow,
The water jet propulsion device is characterized in that these removal plates are movably provided above the water intake port so as to sandwich the drive shaft to the grill.