JPH07216945A - Water receiving tank control device - Google Patents

Abstract

PURPOSE:To adjust an amount of feed water to a proper value by a method wherein a water receiving tank of a building wherein there are many and unspecified utilizers is divided into a plurality of division water receiving tanks and the division water receiving tank is increased one at a time according to a demand for water as a water quantity is controlled by a water level detecting electrode sensor and a solenoid valve. CONSTITUTION:A water receiving tank is divided into, for example, B, A, and C and A, A+B+C, and B+C are properly used according to a water sample amount. When only A is used, a solenoid valve 6 for drainage is opened and B and C are drained. ON/OFF control of a solenoid valve 3 for makeup water is performed by a water level detecting electrode sensor 1 for A to keep a water level in A at a constant value. In a case A+B+C is used, the valve 6 is closed, ON/OFF control of the valves 3 and 4 is performed by sensors 1 and 2 for A and B to keep a water level in A, B, and C at a constant value. Further, in a case B+C is used, the valve 6 is closed, when ON/OFF control of the valve 4 is controlled by the sensor 2 for B, since B and C are intercommunicated through a communicating pipe 9, a water level in B and C is kept at a constant value. This constitution facilitates selection of a water quantity responding to the number of utilizer; and prevents the generation of dead water.

Description

Detailed Description of the Invention

[0001]

[Industrial field of application] The present invention relates to the capacity control of a building that accommodates an unspecified number of personnel, such as a water tank of a gymnasium.

[0002]

2. Description of the Related Art For example, in a gymnasium, the number of visitors may be large or small depending on the size of the event, which is not constant. In such a case, conventionally, water tanks should be prepared to meet the maximum number of visitors, or several water tanks should be installed to meet the expected number of visitors, and a dedicated operator should be assigned to cover the valve switching operation. Was common.

[0003]

As described above, dead water becomes a problem in a large-sized water receiving tank suitable for the maximum number of visitors when the demand for water is small. In addition, the method of installing several water receiving tanks corresponding to the expected number of visitors and operating the valves with a dedicated operator is not efficient because of the problem of space for installing the receiving tanks and the need for a dedicated operator. The present invention has been devised to solve such a problem.

[0004]

[Means for Solving the Problems] For example, a water receiving tank is divided into B, A, and C tanks from the left in order. Water level detection electrode sensors 2 and 1 are provided in the B tank and the A tank to control the makeup water electromagnetic valves 3 and 4, respectively. The bottom of tank B and the bottom of tank C are connected by a communication pipe 9 so that the water level is always at the same level. Also B
The tank and the tank C are drained by the drain pipe 10 via the drain solenoid valve 6, so that only the tank A is drained. Separately, the B tank and the C tank are connected to a water supply pump 7 which supplies the load via a solenoid valve 5 through a pipe 11.

Further, the tank A is always filled with water except when it is cleaned, and the water supply pump is kept under water pressure through the pipe 12.

The selection of the tank to be used and the operation of the solenoid valve are performed by a switching board having a switching switch.

[0007]

[Function] By dividing the water receiving tank into three parts B, A and C, only tank A, tank A + tank B + tank C, depending on the amount of water used,
Use properly B tank + C tank. The operation will be described step by step. (See Fig. 1) (a) When using tank A only.

By switching the water tank switching switch 8 of the switching board, the drainage solenoid valve 6 is opened, the tanks B and C are drained, and the makeup water solenoid valve 3 is set by the water level detection electrode sensor 1 installed in the tank A. ON / OFF control is performed to keep the tank A water level constant. At that time, the electromagnetic valve 4 for the makeup water to the tanks B and C is closed, and the electromagnetic valve 5 is also closed. However, water pressure is always applied to the water supply pump 7 which is supplied to the load through the pipe 12.

(B) When using three tanks of A tank + B tank + C tank.

By switching the water tank switching switch 8 of the switching board, the drainage electromagnetic valve 6 is closed and the water level detecting electrode sensors 2 and 1 installed in the tanks B and A turn on / off the makeup water electromagnetic valves 4 and 3, respectively. Control and keep the water levels in tanks A, B, and C constant. At this time, the solenoid valve 5 is opened.

(C) When using two tanks of B tank + C tank.

By switching the water tank switching switch 8 of the switching board, the drainage electromagnetic valve 6 is closed, and the water level detecting electrode sensor 2 installed in the B tank turns on the makeup water electromagnetic valve 4.
The water level of tanks B and C is kept constant by controlling OFF. Although the make-up water solenoid valve is not installed in the C tank, the water level becomes equal to that of the B tank in the communicating pipe 9 with the B tank. At that time, the electromagnetic valve 3 for make-up water to the tank A is closed. The solenoid valve 5 is open.

Table 1 summarizes the positions of the switching switches and the open / closed states of each solenoid valve described in (a), (b) and (c) above.

[0014]

[Table 1]

As described above, the divided water tanks are used properly according to the amount of water used, so that rational water can be used. It also solves the problem of dead water that occurs when the amount of water used in a large water tank is small over a long period of time. In addition, cleaning of the water tank becomes easy, and labor is saved because there is no need for a dedicated operator for the amount of water used.

[0016]

EXAMPLE FIG. 1 shows a schematic diagram of an example. Water tank B
Divide into tank, tank A, and tank C. The water level detection electrode sensors 1 and 2 are arranged in the A tank and the B tank, and ON / OFF of the makeup water solenoid valves 3 and 4 is controlled by an electric relay circuit. The tank A is always filled with the water level except during cleaning, and water pressure is applied to the water supply pump 7 to be supplied to the load through the pipe 12. B
When the tanks C and C are also used, the bottoms of the tanks B and C are connected to the water supply pump 7 via the solenoid valve 5 by the pipe 11. When using tanks B and C, set the water level in tank C to B
In order to make the tanks the same, a communication pipe 9 is provided at the bottom of tanks B and C. When the B tank and the C tank are not used, they are drained through the drainage solenoid valve 6 through the pipe 10 to drain them.

Dotted lines in the figure represent power and signal system lines. When tanks B and C are used, in order to keep the water level at a fixed position, when the solenoid valve 5 is opened, the switching switch 8 is switched and the timer is adjusted so that it opens after several minutes. To do. This is to prevent backflow from the A tank because the water level in the A tank is usually high.

[0018]

The effects of the present invention are as follows.

(A) The amount of water can be easily selected according to the purpose and the number of users.

(B) Dead water can be prevented.

(C) The water receiving tank can be easily cleaned.

(D) The running cost can be reduced without requiring a dedicated operator.

[Brief description of drawings]

FIG. 1 is an example of a schematic diagram of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Water level detection electrode sensor of A tank, 2 ... Water level detection electrode sensor of B tank, 3 ... Solenoid valve for makeup water of A tank, 4
... Solenoid valve for make-up water for tank B, 5 ... Solenoid valve, 6 ...
・ Solenoid valve for drainage, 7 ... water supply pump, 8 ... switching switch, 9 ... communication pipe, 10 ... drainage pipe, 11
・ ・ ・ B side and C side supply piping, 12 ・ ・ ・ A side supply side piping

Claims (1)

[Claims] 1. A water receiving tank of a building accommodating an unspecified number of personnel, while controlling the amount of water by a water level detecting electrode sensor and a solenoid valve, while increasing the water receiving tanks divided one by one according to the demand for water. A water tank control device characterized by being used.