JP2748665B2 - Human waste crushing and pumping equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a human waste crushing and pumping apparatus installed in various buildings such as houses, apartments, and offices to pump and discharge human waste and miscellaneous wastewater.

2. Description of the Related Art Conventionally, drainage of human waste, remaining hot water from a bath, washing, and the like has been performed by gravity of drainage due to a drain pipe plumbing gradient. BACKGROUND ART Human urine crushing and pumping apparatuses have been developed for the purpose of increasing the degree of freedom and arranging layouts freely in houses and the like. The human waste crushing and pumping device installs a submersible pump in the storage tank, detects the water level in the storage tank with the attached water level detection switch, operates the submersible pump, and pumps and discharges wastewater flowing into the storage tank. is there.

As a basic performance required of the above-mentioned sewage crushing and pressure feeding device, sewage and the like are surely crushed, guided to the casing part of the submersible pump and drained.

In order to prevent the generation of odor by leaving no residue such as solids, the inside of the storage tank is kept hygienic so that insects and the like are not generated.

And the like.

 Hereinafter, a conventional human waste crushing and pumping apparatus will be described.

FIG. 5 is a partially cutaway perspective view of a conventional human waste crushing and feeding apparatus, and FIG. 6 is a sectional view taken along the line AA 'of FIG. Reference numeral 1 denotes a storage tank in which a submersible pump 4 is installed. 2
Is a human waste inlet, which is connected to the drain of the flush toilet.
Reference numeral 3 denotes a water level detection switch that detects an increase or decrease in the water level in the storage tank 1 and automatically operates the submersible pump 4. Reference numeral 5 denotes a miscellaneous drainage inlet, into which remaining hot water from a bath, drainage from washing, drainage from a basin, and the like flow. Reference numeral 6 denotes a screen, and 7 denotes a pressurized drainage pipe connected to a sewer or the like. Reference numeral 8 denotes a lid of the storage tank 1, and reference numeral 9 denotes a cutter which is coaxially connected to a motor shaft of the submersible pump 4, and around which a screen 6 is mounted.

The operation of the conventional human waste crushing and pumping apparatus configured as described above will be described below.

The human waste that has flowed from the flush toilet along with the transport water in the low tank passes through the human waste inlet 2 and into the screen 6 together with the transport water. The transport water flows down through the openings of the screen 6 to the bottom of the storage tank, and the water level of the storage tank 1 rises. When the water level rises above the water level set by the water level detection switch 3, the submersible pump 4 is operated and the carrier water starts to be pumped and drained. At the same time, the human waste and toilet paper that have flowed along with the transport water in the screen 6 are removed by the cutter 9 inside the screen 6.
The water is then crushed until it becomes smaller than the opening of the screen 6, flows down to the bottom of the storage tank, and is pumped and drained by the submersible pump 4. Further, the wastewater flowing from the wastewater inlet 5 is directly pumped and drained by a submersible pump, and then drained from the drainage pipe 7 to a sewer.

However, in the above-mentioned conventional configuration, the drainage from the human waste inflow port 2 connected to the drain port of the flush toilet is usually limited to the human waste and the toilet paper. However, when cloth such as absorbent cotton or a handkerchief is washed away, the cloth 9 is caught between the cutter blade and the screen 6 to hinder the rotation of the cutter 9 or to prevent the cutter 9 from rotating. There has been an inconvenience that the cutter blade hinders the cutter blade from shredding the absorbent cotton and the cloth, etc., and in the worst case, the rotation of the cutter unit 9 is stopped. In addition, when small metal objects such as coins flow into the human waste inlet 2, there is a problem that the cutter blade and the small object come into contact with each other and the rotation of the cutter unit 9 becomes impossible. When the rotation of the cutter unit 9 stops, the rotation of the submersible pump 4 stops because the cutter unit 9 is coaxial with the motor shaft of the submersible pump 4, so that the pumping and draining is impossible.

Means for Solving the Problems The present invention is directed to a foreign matter (absorbent cotton, cloth cut, sanitary polymer absorbent, etc.) which is not easily shredded with a cutter blade from a human waste inlet.
Also, when small metals (coins and the like) flow and a shock at the time of crushing is applied to the cutter blade, the cutter blade is temporarily made to be able to retreat and rotate.

Operation According to the above configuration, even when foreign matter flows in, the cutter unit does not become unrotatable, and thus the function of the submersible pump is not impaired. In addition, foreign substances such as absorbent cotton are not shredded instantaneously, but are shredded gradually and do not stay in the storage tank. Since the cutter blade returns to its original position as the foreign matter is cut, it can withstand long-term use.

Embodiment FIG. 1 is a sectional side view of a human waste crushing and pumping apparatus according to an embodiment of the present invention, FIG. 2 is a partially transparent plan view of a cutter unit, and FIG. FIG. 4 is a sectional view taken along the line A ', and FIG. 4 is a sectional view at the center of another embodiment. 1 is a storage tank, 2 is a human waste inlet, 3 is a water level detection switch, 4 is a submersible pump, 5 is a miscellaneous drainage inlet, 6 is a screen, 7 is a pressure feed drain pipe, and 8 is a lid of the storage tank. Are the same as those in the conventional example, and thus the same reference numerals are given and the description is omitted. Reference numeral 10 denotes a cutter unit, and the cutter unit 10 is mounted on the motor shaft of the submersible pump 4 coaxially with the pump impeller. 11 is a cutter blade, 12 is a spring for rotatably engaging the cutter blade 11, 13 is a bolt for axially attaching the cutter blade 11,
Reference numeral 14 denotes a sliding tube which is inserted into the bolt 13 and clamps the cutter blade 11 with the washer of the spring 12. Upper and lower plates 15 and 16 surround the cutter unit 10 and have a shaft hole for inserting a shaft at the center, and 17 have a concave portion for accommodating the sliding tube 14 at a predetermined portion and a shaft hole at the center. An impeller 19 is provided with a blade 18 for draining sewage instantaneously on its outer periphery. Reference numeral 19 denotes a stopper for restricting the rotation of the cutter blade 11 when foreign matter hits the cutter 10. FIG. 4 has a structure in which the spring 12 is removed from the cutter unit 10 of FIG. 3, and has a washer and the like above and below the insertion hole of the slide tube 14 of the cutter blade 11, and is provided between the upper and lower plates 15, 16. The cutter blade 11 is sandwiched. The distance between the upper and lower plates 15, 16 is appropriately determined by the height of the sliding tube 14 inserted into the bolt 13.

The operation of the cutter unit of the human waste crushing and feeding apparatus of the present embodiment configured as described above will be described below.
2 and 3, when foreign matter such as absorbent cotton and a piece of cloth other than human waste flows from the flush toilet, it is difficult to be instantaneously crushed in the cutter unit 10, but the cutter blade 11 is not used in FIG. As shown by a two-dot chain line, the cutter blade 11 rotates backward against the urging force of the spring 12, so that the cutter blade 11 temporarily escapes backward according to the hardness of the foreign matter, and the cutter unit 10 Is not bound. Further, the foreign matter is gradually cut and discharged by the urging force of the spring 12 of the cutter blade 11, and therefore does not remain as a residue. When small metals are mixed, even if the small metals hit the cutter blade 11, the cutter blade 11 can escape to the rear according to the resistance of the spring 12, so that the cutter can There is no inconvenience that the part 10 is restricted and the submersible pump motor cannot rotate as a result. As for the maximum relief position of the cutter blade 11, the stopper portion 19 is attached to the cutter blade 11, so that the cutter blade 11 retreats to the shaft portion as shown by a two-dot chain line in FIG. Then, as the foreign matter is shredded, the cutter blade returns to its original position by centrifugal force due to rotation. The cutter unit 10 shown in FIG. 4 crushes foreign matter by the centrifugal force of the cutter blade 11, and the crushing force of the foreign matter is reduced by the absence of the resistance of the spring 12, but the cutter blade 11
Is a swing type, and the movement is smooth, so that the restraint of the motor for the submersible pump and the like are less likely to occur.

Advantageous Effects of the Invention The present invention provides a high-strength absorbent cotton or cloth which is difficult to be shredded by the cutter blade of the cutter unit, or small metals such as coins flowing into the cutter blade. Since it is rotatable so that it temporarily escapes backwards,
The cutter blade is not damaged, foreign matter is entangled with the cutter blade, and is caught between the screen portion and the cutter portion is restrained, so that the pumping and draining by the submersible pump does not stop, and the pumping and draining can be performed stably. . In addition, the cutter blades that have escaped temporarily can be cut against the spring force or centrifugal force little by little, so that foreign matter does not stay in the cutter inside the screen for a long time, making it extremely hygienic. It is a target.

[Brief description of the drawings]

1 is a cross-sectional side view of a human waste crushing and pumping apparatus according to one embodiment of the present invention, FIG. 2 is a plan view of a cutter unit, FIG. 3 is a cross-sectional view taken along line AA 'of FIG. FIG. 4 is a sectional side view of a center portion of a cutter portion of another embodiment, FIG. 5 is a partially cutaway perspective view of a conventional human waste crushing and feeding device, and FIG.
It is a line sectional view. 1 ... storage tank, 12 ... spring 2 ... urine inflow section, 13 ... missing number 3 ... water level detection switch, 14 ... missing number 4 ... submersible pump, 15 ... cutter mounting screw 5 ... miscellaneous drainage flow Inlet, 16 ... Sliding ring 6 ... Screen, 17 ... Cutter upper plate 7 ... Drain pipe, 18 ... Cutter lower plate 8 ... Cover, 19 ... Cutter intermediate plate 9 ... Cutter, 20 … Cutter section intermediate plate blade 10… Cutter section of the present invention, 21… Cutter blade stopper section 11… Cutter blade

Claims (1)

(57) [Claims] A submersible pump; a cutter unit coaxial with a motor shaft of the submersible pump; at least one or more cutter blades rotatably held around the cutter unit; A spring biasing outwardly of the
And a screen provided around the cutter unit.