JPH0742215A - Drainage pump - Google Patents

Abstract

PURPOSE:To prevent a cutter from rotating even if electric source has been left connected carelessly in a maintenance work of a crusher. CONSTITUTION:A crusher is provided with a fitting metal block 17 projecting from a crusher casing 9 and fixing an electric source cord side connector 15b and support rods 18 projecting from the crusher casing 9 and piercing in the penetrated holes 19 of a crusher motor 5a. When the crusher motor 5a is removed from the crusher casing 9 in the case of maintenance work of the crusher 5, since the fitting metal block 17 fastens the cord side connector 15b, it can not be removed unless it is pulled out of an electric source box side connector 15a. And even if the electric source cord side connector 15b is tried to remove from the fitting metal block 17, by trying to rotating the whole crusher motor 5a with hands against the crusher casing 9, the connector 15b is never removed owing to the support rods 18. Accordingly, when the crusher motor 5a is removed, the electric source must be disconnected inevitably and hence, safe operation can be performed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage pumping device in a unit type drainage pumping toilet which crushes and discharges waste.

[0002]

2. Description of the Related Art Generally, a drainage pumping toilet has a drainage pumping device for discharging urine water, toilet paper, and other waste discharged from a flush toilet with a cutter, and then discharging the wastewater from the storage tank to the outside with a submersible pump. I have it. Since the drainage pumping toilet crushes and discharges the waste, it can discharge even a relatively small diameter pipe, for example, a pipe of about 25 mm, and has a feature that it can be easily installed anywhere.

A conventional drainage pumping device for a drainage pumping toilet will be described below with reference to the drawings. Figure 4
FIG. 3 is a schematic perspective view showing the inside by cutting out a part of the drainage pumping device. In the figure, a submersible pump 3 is installed inside a storage tank 2 which is closed by a lid 1, and a crusher 5 is connected via a connection hose 4. Further, the submersible pump 3 is provided with a float switch 6 for automatically operating the both by detecting the water level in the storage tank 2. On both sides of the storage tank 2, a gray water drainage inlet 7 and a sewage distribution inlet 8 are provided, respectively. Storage tank 2
The sewage distribution inlet 8 is connected to the crusher 5 via the connection hose 4. The crusher 5 is composed of a crushing motor 5a, a crushing casing 9, a crushing strainer 10, a cutter 11 and the like, and has a crushing motor 5a dedicated to the crusher independent of the submersible pump 3. Further, the crushing casing 9 is provided with a defecation inflow port 9a which is a connection port with the flush toilet and a defecation outflow port 9b which is connected to the storage tank 2 by the connection hose 4. Further, a pressure-feeding drain pipe 12 is connected to the outlet of the submersible pump 3, and the crusher 5 and the storage tank 2 are installed on a common base 13.

FIG. 5 is a perspective view of the power source portion of the crusher 5 and its vicinity. The power cord 14 extends from a control panel (not shown) and is connected to a power box 16 of the crusher 5 via a connector 15.

Next, the operation of the drainage pumping device constructed as described above will be described with reference to FIG. The waste in the flush toilet is washed by the wash water, flows in from the defecation inlet 9a of the crushing casing 9, and only the sewage and the wash water pass through the crushing strainer 10 and flow into the storage tank 2 via the defecation outlet 9b. Therefore, the water level in the storage tank 2 rises, and when the water level reaches a predetermined position, the water level is detected by the float switch 6, the submersible pump 3 is operated, and the pumping drainage pipe 12 moves to an external wastewater tank or a sewer pipe. Send by pressure.
Further, in order to crush the dirt and tissue paper accumulated in the crushing casing 9, the crushing motor 5a is started to operate by the flow switch 6 provided in the submersible pump 3, and the cutter 11 rotates. Therefore, the filth and the tissue paper are crushed by the cutter 11 while rotating in the crushing casing 9, and only the filth and the tissue paper crushed smaller than the mesh of the crushing strainer 10 pass through the defecation outlet 9b and enter the storage tank 2. The water flows in and is discharged to the outside by the submersible pump 3 along with the wash water and the sewage through the pressure-feeding drain pipe 12. When miscellaneous wastewater flows into the storage tank 2, only the submersible pump 3 is operated and the pumped drainage pipe 1
It is discharged to the outside after passing 2. It should be noted that the rise in the water level in the storage tank 2 due to the use of the toilet and the rise in the water level due to the miscellaneous drainage are detected by the combination of the signal from the washing switch (not shown) and the signal from the float switch 6 and are crushed only when the toilet is used. The machine 5 and the submersible pump 3 are operated in parallel, and in the case of miscellaneous drainage, only the submersible pump 3 is operated independently.

[0006]

In the above-mentioned conventional drainage pumping device, when the maintenance is performed, especially the crusher 5 is used.
When performing maintenance on the
From the power supply box 16 of the crusher 5 to the connector 15
After removing, the crushing motor 5a is removed from the crushing casing 9. At that time, the power is not turned off due to an error in the work procedure, and the crushing motor 5a is left with the power cord 14 still connected.
If the tool is removed, the cutter 11 may rotate for some reason and pose a great risk to the operator. For this reason, precautions are taken to ensure strict adherence to work procedures during maintenance.

However, despite such consideration for safety measures, some people try to maintain the crusher with the power cord connected without turning off the power source. Safety measures are required.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a drainage pumping device in which maintenance of the crusher cannot be performed unless the power is turned off.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is designed so that when a crushing motor is removed from a crushing casing, the connector must be pulled out, that is, the crushing motor cannot be removed unless the power is turned off. The support rod protruding from the crushing casing is passed through the through hole provided in the crushing motor, and the power cord side connector connected to the power supply box side connector attached to the crushing motor is fixed to the crushing casing. It is designed to be locked by metal fittings.

[0010]

Therefore, according to the present invention, when the crushing motor is removed from the crushing casing, the connector must be pulled out and the power cannot be removed unless the power is turned off. Therefore, there is no danger in the work, and safe and reliable maintenance work is guaranteed. can do.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. FIG. 1 is a perspective view near the power source of the crusher. Among the constitutions of the present embodiment, the whole constitution is the same as the conventional constitution shown in FIG. 4. Therefore, the same parts as those of the conventional example are designated by the same reference numerals, and the whole constitution and the basic operation are duplicated. The description is omitted.

In FIG. 1, reference numeral 15a is a power supply box side connector, and 15b is a power supply cord side connector. Reference numeral 17 is a supporting metal fitting for preventing the crushing motor 5a from being detached unless the power cord side connector 15b is pulled out, and 18 is a whole of the crushing motor 5a rotated by hand with respect to the crushing casing 9 from the supporting metal fitting 17 to the power cord side connector 15b. It is a support rod to prevent trying to remove. Support bracket 17
The lower part is fixed to the crushing casing 9 and protrudes upward, and the upper end part is formed in a fishing shape.
5b is locked. The support rod 18 has a lower portion fixed to the crushing casing 9 and protrudes upward, and penetrates a through hole 19 provided in the lower portion of the crushing motor 5a so that the crushing motor 5a cannot be manually rotated with respect to the crushing casing 9. There is.
Therefore, when the power cord side connector 15b is inserted into the power box side connector 15a, the upper portion of the power cord side connector 15b hits the support fitting 17 so that the crushing motor 5a does not come out upward. That is, the crushing motor 5a is structured to be pulled out upward along the support rod 18 when the power cord side connector 15b is pulled out.

In the drainage pumping apparatus having the above structure,
When the operator performs maintenance on the crusher 5, first, the bolt 20 fixing the crushing casing 9 and the crushing motor 5a is loosened. If the worker forgets to disconnect the power cord side connector 15b from the power box side connector 15a of the crushing motor 5a, even if the crushing motor 5a is to be removed, the power cord side connector 15b hits the support metal fitting 17 and pulls out. I can't. For this reason, the entire crushing motor 5a must be turned by hand and the power cord connector 1
Even if it is attempted to remove 5b from the support fitting 17, it cannot be rotated because the support rod 18 fixes the crushing motor 5a to the crushing casing 9. Therefore, the crushing motor 5a
When disconnecting, the power cord side connector 15b must be always pulled out, and the power source is not connected to the crusher 5. As a result, even when the worker removes the cutter 11 from the crushing motor 5a, the cutter 11 does not suddenly start to rotate due to human error or the like, and the work can be performed safely.

2 and 3 show another embodiment associated with the present invention. Reference numeral 21 denotes a hook band, which is a metal fitting that allows the crushing motor 5a to be removed from the crushing casing 9 with one touch. FIG. 2 shows a hook band 21
Is on-hook, and FIG. 3 shows the hook band 21.
Is off-hook.

In the embodiment shown in FIG. 1, the crushing motor 5a
When removing the crushed casing 9 from the crushing casing 9, it is troublesome to remove the bolts 20 fixing them.
On the other hand, in the present embodiment, the crush motor 5a can be removed from the crush casing 9 with one touch by the hook band 21 attached to the crush casing 9. That is, when the arm 21a is raised upward, the support portion 21b loosens and is disengaged from the claw 22 on the crushing motor 5a side. Conversely, when the support portion 21b is hooked on the claw 22 and the arm 21a is lowered, the crushing motor 5a is fixed. Can be attached and detached extremely easily and quickly.

The hook band 21 can be easily fixed by one touch, but it is easily detached by vibration, impact or the like. Therefore, if the structure is such that the crushing motor 5a can be detached from the crushing casing 9 with the power source connected as in the conventional technique, the hook band 21 can be loosened and the crushing motor 5a can be detached due to vibration during operation or some shock. In addition, when performing maintenance work, an operator may loosen the hook band 21 easily and an unexpected accident may occur.

On the other hand, according to this embodiment, the arm 21 of the hook band 21 is combined with the structure using the support fitting 17 and the support rod 18 described in FIG.
Even if a is detached for some reason, the crushing motor 5a cannot be detached unless the power cord side connector 15b is pulled out. Therefore, the cutter 11 is not easily exposed and the maintenance work can be performed safely.

[0018]

According to the present invention, as is apparent from the above-described embodiment, when the crusher is maintained, the crushing motor cannot be removed without disconnecting the power connector, that is, the crushing motor is removed to expose the cutter. Since the power is always off at all times, there is no danger that the cutter will suddenly rotate during maintenance. Further, if the crushing motor and the crushing casing are fixed using the hook band, safe and speedy maintenance can be performed, and an excellent drainage pumping device can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view around a power source of a crusher according to an embodiment of the present invention.

FIG. 2 is a perspective view of the vicinity of the power source of the crusher according to another embodiment of the present invention.

FIG. 3 is a perspective view illustrating the operation of FIG.

FIG. 4 is a schematic perspective view showing the configuration of a drainage pumping device.

FIG. 5 is a perspective view of the vicinity of the power source of the crusher in the conventional drainage pumping device.

[Explanation of symbols]

 1 Lid 2 Storage Tank 3 Submersible Pump 4 Connection Hose 5 Crushing Machine 5a Crushing Motor 6 Float Switch 7 Miscellaneous Wastewater Inlet 8 Sewage Logistics Inlet 9 Crushing Casing 9a Defecation Inlet 9b Defecation Outlet 10 Crushing Strainer 11 Cutter 12 Pressure Drainage Pipe 13 Base 14 Power cord 15 Connector 15a Power box side connector 15b Power cord side connector 16 Power box 17 Support metal fitting 18 Support rod 19 Through hole 21 Hook band 21a Arm 21b Support part 22 Claw

Claims (1)

[Claims] 1. A crushing motor for crushing filth discharged from a flush toilet with a cutter, and a crushing motor detachably attached to the crushing casing for driving the cutter. A support rod protruding from the crushing casing was pierced through the provided through hole, and a power cord side connector connected to the power box side connector attached to the crushing motor was fixed to the crushing casing. A drainage pumping device characterized by being locked by a support fitting.