JPH027138Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention is used in the technical field of cleaning treatment, and particularly relates to a cleaning machine for cleaning dirt on an underwater floor.

(Conventional technology) Conventionally, cleaning machines that clean debris on underwater floors while filled with water have (a) automatically moved over the underwater floor and used the suction power of the installed submersible pump to sweep the floor. A self-propelled cleaning method (b) A submersible pump is suspended on the water surface, a suction hose is extended and connected to the suction port of this submersible pump, and a cleaning brush with a handle is installed at the tip of this suction hose. Floating type, in which the floor is scrubbed underwater with a cleaning brush that stands on the floor by holding the handle of the cleaning brush with a handle; Above-ground types with attached cleaning brushes are becoming popular. However, although the self-propelled type (a) has the advantage of automatically cleaning the underwater floor, it has the disadvantage that the equipment is complicated and expensive. On the other hand (b) and (c)
Although the system is simpler than (a), the suction performance is greatly reduced due to the resistance of the hose on the suction side of the pump. Care must be taken to make contact and move in a safe manner. Especially when the water is deep and workers cannot stand upright, it is necessary to attach a particularly long handle to the cleaning brush and operate it from the ground without entering the water. There was a problem in that it was difficult to maintain good contact over the entire surface, and sufficient cleaning was not possible, resulting in poor workability.

(Problems to be solved by the invention) This invention solves the problem that conventionally, it has been difficult for the cleaning brush to make good contact with the underwater floor in submersible floor cleaning machines operated by workers, especially when the worker's back is upright. Not only is workability poor for deep underwater floors, but
This is an attempt to solve the problem of poor suction performance of the pump due to the long suction hose connected to the submersible pump.

(Means for solving the problems) The means taken to solve the above problems in this invention will be explained with reference to the drawings.

In the submersible floor cleaning machine 1 of this invention, a submersible pump 3 is installed on the upper side of the underframe 2 with its suction port 3a facing downward. is the front, and the right side is the rear.)
Caster means 4 formed by combining a total of three or more fixed casters 4a and ball casters 4b.
and a guard 5 that covers the suction port 3a of the submersible pump 3 and captures foreign objects that cannot pass through the submersible pump 3.
, a cylindrical skirt 6 that surrounds the outer periphery of the guard 5 and whose lower end has a slight gap S with the floor surface B to be cleaned; A dust guide plate 7 is provided in contact with the surface B, and an operating rod 8 is further connected to the underframe 2.

(Function) To describe the function of the submersible floor cleaning machine 1 of this invention described above, an appropriate bag filter 9 is connected to the discharge port 3b of the submersible pump 3, and the submersible floor cleaning machine 1 is submerged in water such as a pool. Place it on the floor surface B to be cleaned. When the cord 3c of the submersible pump 3 is connected to a ground power source (not shown), the submersible pump 3 is activated. The worker holds the tip of the operating rod 8 and moves the underwater floor cleaning machine 1 back and forth while maintaining a stable posture above the floor surface B to be cleaned using the caster means 4. The upper garbage is collected on the outer periphery of the skirt 6 by the garbage guide plate 7. Then, due to the suction action of the submersible pump 3, the water near the bottom of the water passes through the narrow passageway of the gap S between the lower end of the skirt 6 and the floor surface B to be cleaned at high speed, and
It is sucked in from a. The high-speed water flow in this gap S removes the dust on the floor surface B to be cleaned and sucks it into the suction port 3a together with water. Foreign matter that cannot pass through the submersible pump 3 is captured by the guard 5,
Other dust and water pass through the submersible pump 3 and reach the bag filter 9 from its discharge port 3b. The dust is collected by this bag filter 9, and the water passes through and returns to the pool. In this case, if the amount of dust is large and the baggage filter 9 becomes clogged quickly,
A discharge hose may be connected to the discharge port 3b, and the tip of the discharge hose may be positioned outside the pool to discharge the garbage together with the water outside the pool. In addition, the floor surface B to be cleaned is the underwater floor of the pool, fish pond, etc.
Submerged floors such as sedimentation ponds, melt tanks, and other water tanks can also be cleaned in the same way. Furthermore, when moving this submersible floor cleaning machine 1 back and forth, since the caster means 4 is constituted by a combination of a fixed caster 4a and a ball caster 4b in the longitudinal direction, the caster means 4 can be moved backwards and forwards, as in the case where swingable casters are used. There is no chance that the head of the swivel caster will turn unexpectedly and the direction of movement will become irregular.

(Example) An example of this invention will be described below with reference to the drawings.

The submersible pump 3 is attached to the upper side of the underframe 2 by screw means 2a. Further, the underframe 2 is provided with a vent hole 2b for removing water and air.

A discharge hose fitting 3d is attached to the discharge port 3b of the submersible pump 3 by screwing.
The bag filter 9 and the discharge hose described above are connected to this discharge hose fitting 3d. The base of the cord 3c is held watertight by the submersible pump 3, and a float 3e is fitted in the middle of the cord 3c, so that when the underwater floor cleaning machine 1 is moved back and forth on the floor surface B to be cleaned. In addition, the cord 3c is configured to float on the water surface so that the cord 3c does not sink and move on the floor surface B and wind up settled debris.

In this embodiment, the caster means 4 includes fixed casters (casters whose direction is fixed) 4 on the left and right sides of the front part.
A is provided with two ball casters (for example, those with a ball supported rotatably in any direction, such as the product name Freebear) 4b on the left and right sides of the rear. There may be a total of three, one on one side and two on the other. Alternatively, the fixed caster 4a may be provided at the rear and the ball caster 4b may be provided at the front. The clearance S of the fixed caster 4a can be adjusted by making its installation height variable using screw means 4c. The wheels and balls of both casters 4a and 4b are made of synthetic resin, and are designed to avoid damaging the floor surface B to be cleaned.

In this embodiment, the guard 5 is made of a punched steel plate, and the diameter of this punch hole is set to be slightly smaller than the dimension of the narrowest part of the water passage of the submersible pump 3, so as to trap foreign objects that cannot pass through the submersible pump 3. It is formed like this. The guard 5 can be attached to and removed from the underframe 2 by engaging a pin 5b with an L-shaped groove 5a cut in its open end.

The skirt 6 is formed of a rubber plate, and its lower part is provided with vertical notches at equal intervals to enhance its flexibility.

The garbage guide plate 7 is formed of a rubber plate, and its front and rear ends have a wider left-right interval than the center part, and its planar shape is formed into a ventilate shape, and its lower part has vertical notches at equal intervals. It is formed to have increased flexibility so that it can follow the distortion of the floor surface B to be cleaned.

The operating rod 8 is made variable in its overall length by adding one or more extensions 8a with pins. The means for making the overall length variable may be other known means, such as screw means. On the other hand, a bracket 2c is provided at the rear of the underframe 2, and at the tip of this bracket 2c, the base end of an operating rod 8 is pivotally supported by a left-right shaft 8b, so that the operating rod 8 can freely rotate in the vertical direction. It is configured. In this way, the overall length and inclination angle of the operating rod 8 can be adjusted to correspond to the water depth of the floor surface B to be cleaned. When the operating rod 8 is operated to move this submersible floor cleaning machine 1 back and forth, the intersection point with the floor surface B to be cleaned in the direction in which the force acts is a quadrilateral surrounded by the four casters of the caster means 4. This is the inside of the shaft 8 to make the underwater floor cleaning machine 1 more stable on the floor.
The position of b is determined. Further, the vertical position of the shaft 8b is set below the center of gravity G of the submersible floor cleaning machine 1 excluding the operating rod 8, and when the submersible floor cleaning machine 1 is suspended by the operating rod 8, The submersible pump 3 is configured such that the suction port 3a faces upward. By doing this, when lifting the submersible floor cleaning machine 1 underwater, the submersible pump 3 remains in operation while the operating rod 8
When the submersible pump 3 is lifted up, the submersible pump 3 assumes an almost inverted position with its suction port 3a facing upward, as shown in FIG. Even if the foreign object is sucked by the guard 5, the submersible pump 3 rises into the air, and this suction force is lost and the foreign object comes off the guard 5, it falls into the depths of the surrounding skirt 6 and does not return to the water again.

A cover 10 that surrounds the above-mentioned underframe 2, submersible pump 3, caster means 4, guard 5, skirt 6, garbage guide plate 7, etc. is attached to the underframe 2, and a ring-shaped handle is attached to the upper end of the cover 10. 11 is provided to facilitate movement on the ground. Further, the upper end surface of the cover 10 has a hole 10a through which the discharge port 3b of the pump 3 and the cord 3c pass, and an air vent hole 10b.

(Effects of the invention) Since the underwater floor cleaning machine of this invention serves as the means described above, it has many effects as described below.

(a) Since the suction port of the submersible pump is installed on the upper side of the underframe with the suction port facing downward, even when the water level on the floor to be cleaned is quite low, the impeller remains underwater and the submersible pump can suck in water. In addition to being able to function as an underwater floor cleaning machine, the suction side passage is short and there is extremely little flow resistance, and the pump has good suction performance, allowing for powerful suction of dust.

(b) Since caster means consisting of a total of three or more combinations of fixed casters and ball casters is provided on the underside of the underframe, not only can the direction of movement be changed freely, but also it can , the direction of travel will not change against your will.

(c) Since a guard is provided to cover the suction port of the submersible pump, large foreign objects will not be sucked into the submersible pump and cause it to become clogged or damaged.

(d) A cylindrical skirt is provided around the outer periphery of the guard, and there is a slight gap between the bottom end of this skirt and the floor surface to be cleaned, so the flow rate of the suction water flow in this gap increases, and this flow rate increases. Then, the garbage in the vicinity is flushed into the suction port of the submersible pump, so the garbage can be completely collected.

(e) Since garbage guide plates are installed on the left and right sides of the skirt and extend in the front-rear direction, and their lower ends are in contact with the floor surface to be cleaned, when the underwater floor cleaning machine is moved back and forth, its progress will be The garbage in the direction is collected around the skirt, and the garbage collection is more complete.

(f) Since the operating rod is provided, the underwater floor cleaning machine can be operated by moving it back and forth, not only when the worker is working on the bottom in shallow water, but also when operating from the ground in deep water. . In addition, this submersible floor cleaning machine is equipped with caster means consisting of a combination of three or more fixed casters and ball casters on the underside of the underframe, so even if the submersible floor cleaning machine is moved using a long operating rod, it will not work. The position of the submersible floor cleaning machine relative to the floor surface to be cleaned is always stable, and its dust collecting action is well maintained, resulting in good workability.

[Brief explanation of the drawing]

The drawings all show embodiments of this invention.
The figure is a vertical side view, FIG. 2 is a plan view, FIG. 3 is a bottom view, and FIG. 4 is an explanatory view of the operation. 1... Submersible floor cleaning machine, 2... Underframe, 3... Submersible pump, 3a... Suction port, 4... Caster means, 4a... Fixed caster, 4b... Ball caster, 5... Guard, 6... Skirt, 7... Garbage guide plate, 8...Operation rod, B...Floor surface to be cleaned, S...Gap.

Claims (1)

[Claims for Utility Model Registration] (1) A submersible pump is provided on the upper side of the underframe with its suction port facing downward, and a fixed caster and a ball caster in the longitudinal direction are installed on the lower side of the underframe. a caster means formed by a combination of three or more; a guard that covers the suction port of the submersible pump and captures foreign matter that cannot pass through the submersible pump; a cylinder surrounding the outer periphery of the guard and having a lower end with a slight clearance from the floor surface to be cleaned; A shaped skirt and a garbage guide plate extending in the front-rear direction on the left and right sides of the skirt and having their lower ends in contact with the floor surface to be cleaned are provided, and furthermore, an operating rod is connected to the underframe to move the garbage guide plate back and forth on the underwater floor. This submersible floor cleaning machine is characterized in that the dirt on the floor to be cleaned is removed and collected. (2) The caster means is a combination of one fixed caster on each side and one or more ball casters. A submersible floor cleaning machine according to claim 1 of the utility model registration claim. (3) The underwater floor cleaning machine according to claim 1, wherein the dust guide plate has a wider left-right distance at its front and rear ends than at the center. (4) The scope of the utility model registration claim, wherein the base end of the operating rod is pivotally supported and connected to the underframe so that it can freely rotate up and down by a shaft in the left and right direction, and the overall length is made variable by addition. The submersible floor cleaning machine according to item 1. (5) The underwater floor cleaning machine according to claim 4, wherein the shaft connecting the operating rod is provided at a position below the center of gravity of the portion excluding the operating rod.