JPH03270785A - Apparatus for continuously charging powdery or granular chemical agent - Google Patents

Abstract

PURPOSE:To easily control the charging amount of a chemical agent and to prevent more-than- necessary wetting with water by separating the chemical agent from water within a cylindrical container and filling a chemical agent hopper with a required amount of the chemical agent in the upper part of the container and providing a water feed-in port and a water feed-out port to the lower part of the container. CONSTITUTION:When the water feed-in port 12 and water feed-out port 13 provided to the lower part of a hermetically closed container 1 are connected to a main flow path, water flows in the container 1 by the pressure difference between the pressure of flowing water and the pressure in the cylindrical container 1 and a constant water level is held at the point of time when pressure balance is taken and a chemical agent hopper 4 and the chemical agent received therein are not wetted with water. When an electromagnet 9 is excited in this state, an opening and closing damper 6 is attracted by magnetic force and a chemical agent supply port 5 is opened to charge the powdery or granular chemical agent in the container 1. Since the water in the container 1 is revolved, the chemical agent is immediately dissolved to be fed out to the main flow path from the feed-out port 3. The charging amount of the chemical agent per one time is set to a slightly small amount and the damper 6 is opened and closed a predetermined number of times per a unit time to perform control so as to charge a desired amount of the chemical agent.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a chemical injection device for continuously injecting a chemical such as a disinfectant into a water tank or liquid storage tank such as a swimming pool, and particularly relates to a chemical injection device that continuously inputs a chemical such as a disinfectant into a water tank or liquid storage tank such as a swimming pool. The present invention relates to an improvement in a dosing device capable of continuously injecting a target drug in the middle of a circulation path in which water or other liquid in a liquid tank is circulated through an externally installed filter or the like.

[Prior Art] This type of drug injection device has been provided in the past. An example of this can be seen in Japanese Patent Publication No. 49-5413.

This device utilizes a pressure difference to guide a portion of flowing water into a drug filling chamber, where it comes into contact with solid drugs to dissolve them and returns them to the flowing water. For example, when targeting a swimming pool, a feeding device with a chemical filling chamber is installed in the middle of the flowing water path that is forced to circulate between the external filter and the flowing water is taken into and taken out from the chemical filling chamber using a pressure difference. The solid medicines stacked in the medicine filling chamber come into contact with water to dissolve the medicines and return them to the pool. When targeting swimming pools, calcium hypochlorite is used as a chemical.

[Problems to be Solved by the Invention] The drug injection device described above uses solid drugs to pile up
Although the drug attempts to dissolve by contact with the inflowing liquid, it is difficult to control the amount of drug dissolved, and there is a concern that more drug than necessary may be injected. Especially when the amount of drug is insufficient,
This method is relatively simple because all you have to do is add the medicine, but if the amount of medicine is large, it becomes necessary to stop the operation at the end and take out the accumulated medicine, which is very cumbersome.

When targeting drugs such as calcium hypochlorite,
When stacked in a solid state, water will be absorbed from the bottom layer,
It swells and becomes muddy, and more than the required amount is easily dissolved. In addition, the slurry of the chemicals tends to adhere to and elongate inside the equipment and piping, which often causes clogging after continuous use for about a week, and requires frequent cleaning work. Additionally, the entire structure had to be cleaned with hydrochloric acid once every month, which was dangerous to handle, and it also generated chlorine gas, making the process extremely dangerous.

Therefore, the purpose of this invention is to easily control the amount of chemicals to be introduced, to prevent excessive water wetting, to eliminate the risk of clogging in equipment or piping, and to facilitate cleaning and washing operations. The purpose of the present invention is to provide a drug injection device that hardly requires any medicine.

[Means for Solving the Problems] In view of the fact that in conventional devices, the above-mentioned problems occur because the medicine and water are constantly in contact with each other, in this invention,
The medicine and water are separated in a cylindrical container, and the required amount of medicine is filled into a medicine tank hopper at the top of the container.
The water intake and outlet were installed at the bottom of the container.

That is, the drug injection device according to the present invention has a cylindrical container with a sealed upper part, a water intake port and a delivery port connected to the main flow path in the lower part thereof, and a drug tank having a lower supply port and an opening/closing damper for the supply port. A hopper is provided in the upper part,
A medicine spout with a sealed lid that communicates with the medicine tank hopper is provided at the top of the container, and the opening/closing damper is operated by the magnetic force of a permanent magnet attached to the damper and an electromagnet provided outside the container. Note that the medicine used in this device is in powder or granule form.

As mentioned above, the opening/closing damper is operated by the magnetic force between the permanent magnet attached to the damper and the electromagnet installed outside the container, but in the case of a damper that moves vertically,
The electromagnet may be excited and attracted only during the opening operation, and the closing operation may be performed by the damper's own weight. Of course, both opening and closing operations can also be performed by exciting an electromagnet and using its attraction and repulsion effects.

[Operation] The device for dispensing powdered or granular drugs according to the present invention is characterized in that when the water intake and outlet provided at the lower part of the sealed cylindrical container are connected to the main flow path, the pressure of the flowing water and the pressure inside the cylinder are increased. Due to the difference, water flows into the cylindrical container, and once the pressure is balanced, the water level is maintained at a constant level, and the medicine tank hopper and the medicine filled inside will not get wet.

When the electromagnet is excited in this state, the damper is attracted by the magnetic force and opens the medicine supply port, so that powdered or granular medicine is automatically introduced.

The injected medicine is in the form of powder or granules, and since the water in the container has a swirling flow, it is immediately dissolved and sent out from the delivery port to the main channel.

The amount of medicine injected will be determined according to the opening/closing cycle of the damper. It is easy to control the injection amount by setting a small amount at one time and opening and closing a predetermined number of times per unit time to input the desired amount.

Since it uses an electromagnet, it is possible to connect a timer, and by setting the tamper to open and close at regular intervals, it can be used in water tanks such as pools or IR storage.
&The tank water can always maintain the desired drug dissolution amount automatically.

[Example code] Hereinafter, embodiments shown in the accompanying drawings will be described.

The drawing is a longitudinal cross-sectional view showing an example of a drug injection device according to the present invention, in which 1 is a cylindrical container whose upper part is sealed, 2 is a water intake port connected to a main flow path, and 3 is a water-soluble drug injected into the main flow path. This is the outlet for sending out the water. Both are connected to the main flow path via flexible pipes made of vinyl chloride and stop valves. Reference numeral 4 designates a medicine tank hopper provided in the upper part of the container, which has an arcuate bottom and an opening/closing damper 6 for opening and closing the medicine supply port 5 . The entire container, medicine tank hopper, and opening/closing damper are all made of vinyl chloride to avoid corrosion.

The opening/closing damper 6 is provided to be movable up and down, and a permanent magnet 7 is attached to the upper end.

Reference numeral 8 denotes a medicine spout communicating with the medicine tank hopper 4, which is always closed with an airtight lid and opened and closed to replenish the medicine as necessary.

Reference numeral 9 denotes an electromagnet installed outside the container, which uses an electromagnet whose surface corresponding to the permanent magnet 7 is alternately excited to have north and south poles. 10 is a timer connected to this electromagnet, 11 is a power switch, and 12 is a drain pipe connected to the bottom of the container.

[Effects of the Invention] As described above, in the drug injection device according to the present invention, since the drug and water are separated in the cylindrical container, there is no possibility that more dissolved or sludged drug will enter the device. This enables us to provide a feeding device that does not cause any adhesion and growth, and is extremely favorable in terms of management and cleaning work.

The amount of drug administered can be easily adjusted by adjusting the opening/closing cycle of the opening/closing damper.

Furthermore, since an electromagnet is used to open and close the damper, a timer or the like can be connected, making it extremely easy to automatically control the amount of drug mixed in.

It is also possible to install a detection end for the amount of dissolved drug in a water storage tank such as a swimming pool or on the side of a liquid storage tank, and use the detection signal to control the opening and closing of the damper, which has the effect of allowing fine-grained control. are doing.

[Brief explanation of drawings]

The drawing is a longitudinal sectional view showing an embodiment of a powder or granular drug injection device according to the present invention.

Claims (1)

[Claims] (1) A cylindrical container with a sealed upper part has a water intake port and a water outlet connected to the main flow path in the lower part, and a medicine tank hopper having a lower supply port and a damper for opening and closing this supply port is provided in the upper part. A medicine spout with a sealed lid that leads to a medicine tank hopper is provided at the top of the container, and the opening/closing damper is operated by the magnetic force of a permanent magnet attached to the damper and an electromagnet installed outside the container. Continuous feeding device.