JPH0222817B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for automatically inspecting the trap water seal depth of toilet bowls, urinals, etc.

Water seal refers to the effective depth that separates the pool of water in a trap. Without puddles of appropriate depth, foul odors from sewage and small animals may enter, creating an environment that is not sanitary. If the effective water seal is lost due to some condition such as water evaporation, the various unfavorable conditions described above will occur, so the depth must always be maintained at or above the effective depth. The product is designed to have the required standard dimensions, and the design dimensions are determined by taking into account the shrinkage of the product during the manufacturing process. Water seal depth may vary. In order to detect this error and find defective products, it is necessary to measure the water seal depth after completion.

According to the prior art, in order to measure this effective depth, the product is positioned horizontally, the trap is filled with a certain amount of water through the water tap 17, and the L-shaped scale is hooked to the lower end of the trap. This was done by visually reading the scale and confirming the depth of the water seal (see Figure 1). Also, as a second method,
The product is positioned horizontally and a constant amount of water is supplied via the water tap 17 to fill the trap. Next, the insulated L-shaped electrode 19 is hooked to the lower end of the trap using the insulator 18, and the water seal depth is set to the specified water seal a.
This is a method of detecting whether or not the current value is above based on whether or not the ammeter 20 is energized (see FIG. 2). The first method is all manual and time-consuming;
Also, since the scale is read with the naked eye, the accuracy is poor. or,
In the second method, the depth of the water seal can be automated, and the measurement of the depth of the water seal has been improved with improved accuracy. In some cases, the water seal here refers to the dimension above the jet hole, so with the above method, it is not possible to bring the L-shaped scale etc. to the desired position (jet hole), and a true water seal cannot be achieved. cannot be measured.

Note that the jet hole is an auxiliary water injection hole for further accelerating the flow velocity in the conventional trap for the purpose of eliminating the residue of dirt. Therefore, the object of the present invention is to be able to easily and accurately measure the water seal even in a trap with a jet hole, and to enable labor saving and an automated line through mechanical measurement. In order to satisfy these requirements, the purpose of the present invention is to provide a method that can electrically detect whether or not the effective depth exceeds the standard dimension at the time of completion using the characteristics of water pressure. .

A preferred embodiment of the method of the invention is as follows. Referring to FIG. 3, a steel plate 4 with a sealing layer 3 is used to seal the top surface of the ball. The sealing body 3 is made of urethane resin, rubber, or the like. These sealing body 3 and iron plate 4 are suspended and raised and lowered by a plurality of cylinders 5 and 6. Further, an iron plate 9 with a sealing body 8 having a similar structure for sealing the water supply port 8', and a cylinder 10 for suspending and raising and lowering the same are connected to this. Next, at the iron plate 4 with the sealing body 3 attached, a tube 1 that passes through the iron plate and sends air into the inside of the inspected product 1 is installed.
1' is attached and air is sent through this tube, which is regulated by an air solenoid valve 11. In addition, a water supply pipe 7' is attached that penetrates the iron plate 4 with the sealing body 3 attached and sends water to fill the trap of the inspected item 1, and the water supply is regulated by the water supply solenoid valve 7. . Further, the other end of the tube 15 passing through the iron plate is inserted into the water tank 14. The water tank is always kept full of water, and the water level of the sanitary ware, the tank water level, and the water level in the pipe 15 are at the same level before pressurization. When the inside of the inspected item 1 is pressurized, the inside of the pipe 15 always exhibits the same pressure change because it communicates with the inside of the sanitary ware, and the water surface inside the sanitary ware and the pipe 1
The water level inside 5 will fall while maintaining the same level. Eventually, when the water level in the tube 15 drops by the distance d between the aquarium water level and the lower end of the tube 15, even if you try to pressurize it further, the pressure will escape from the lower end of the tube 15 in the form of bubbles, and the inside of the sanitary ware will be damaged. The water level drops by a distance C equal to the above distance d, and does not fall any further. Further, an ammeter 16 is provided to detect whether the water level in the tube 15 has fallen by a distance d depending on the presence or absence of a current flowing between the two electrodes.

Next, in the operation of this apparatus, first the item to be inspected 1 is set on the pallet 2. The pallet is conveyed to a fixed position by a conveyor and stopped with the upper surface of the pallet leveled. The iron plate 4 with the sealing layer 3 is lowered by air cylinders 5 and 6 to seal the upper surface of the ball. Next, the water supply solenoid valve 7 is opened, a certain amount of water is supplied, and after the trap is filled with water, the water supply solenoid valve is closed. Next, an iron plate 9 coated with urethane resin or rubber is lowered using an air cylinder 10 to seal the water supply port 8'. After opening the air solenoid valve 11 and pressurizing the inside of the toilet bowl with a constant air pressure, the air solenoid valve 11 is closed. Then, the water overflowing from the trap b is discharged from the drain port 12. Whether the water level of the pipe 15 inserted into the water tank 14 that is supplied with water by the water tap 13 is pressurized above the specified water pressure (standard dimension of water seal depth) so that it is always full of water. Detected by ammeter 16. That is, if the water pressure is below the standard water pressure d, the ammeter is conductive, and if the water pressure is above the standard water pressure, the ammeter is not conductive. Based on this, the water sealing depth is determined to be acceptable. Air cylinders 5, 6 and 10 rise, returning the device to its initial position. Products that have undergone water seal inspection are moved to the next station.

This allows manual measurement to be replaced by mechanical measurement, saving labor and making it possible to create an automated line.Also, with conventional technology, it was not possible to measure water seals in traps with jet holes. By the method according to the invention, water sealing can be easily measured even in traps with jet holes.

It should be noted that the invention described herein is presented with respect to particular embodiments. The detailed descriptions provided to facilitate an understanding of the invention of such specific embodiments are chosen for convenience and are not intended to limit the scope of the invention. Many other embodiments may be devised by those skilled in the art without departing from the scope and spirit of the invention, and the invention is limited only by the scope of the claims.

[Brief explanation of drawings]

Figure 1 is a vertical cross-sectional view of a toilet bowl showing how to measure the water seal depth by the conventional method using an L-shaped scale, and Figure 2 shows how to measure the water seal depth by the conventional method using an ammeter with an L-shaped electrode. FIG. 2 is a longitudinal cross-sectional view of a toilet bowl showing a method of measuring the sealing depth. FIG. 3 is a longitudinal cross-sectional view of a toilet bowl with a seal over the bowl bowl and a trap filled with water. FIG. 4 is a longitudinal sectional view of a toilet bowl in which the water supply port is sealed and the inside of the toilet bowl is pressurized with constant air pressure. 1...Product to be inspected, 2...Pallet, 3...Sealing body, 4...Iron plate, 5, 6...Air cylinder, 7...
...Water supply solenoid valve, 8...Sealing body, 9...Iron plate, 1
0...Air cylinder, 11...Air solenoid valve, 1
2... Drain port, 13... Water tap, 14... Water tank,
15...Tube, 16...Ammeter, J...Jet hole.

Claims (1)

[Claims] 1. A method for automatically inspecting the trap water seal depth of sanitary ware having a trap portion and a drainage channel portion, both of which are partitioned by a partition wall, comprising: supplying a certain amount of water; The inside of the trap was filled with water, the opening was sealed, and the upper part of the water surface of the sanitary ware was pressurized with air. A water tank with a water level common to the water level inside the trap was set up so as to communicate with the inside of the trap, and pressurized. A method characterized by measuring the water seal depth based on the water level in the water tank. 2 The water level in the water tank is measured by two electrodes, and an ammeter is used to determine that current will flow if the water seal depth is above the specified water pressure, and current will flow if the water seal depth is below the specified water pressure. A method according to claim 1, characterized in that the method comprises: detecting.