JPH0326136Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention involves inserting a flexible suction pipe made of soft material through an opening that can be closed with a screw cap, etc. into a chemical liquid tank, and sucking out the internal chemical liquid. The present invention relates to a chemical liquid suction device.

(Prior technology) To suck out chemical liquid from a portable chemical liquid tank, remove the screw cap of the tank, insert a flexible suction pipe made of soft material connected to the suction port of the chemical liquid pump, and insert it into the tank with a strainer attached to the tip. Insert the drug, operate the chemical pump, pass it through the strainer, suction tube, and pump, and place it in a suitable container.

(Problems to be Solved by the Invention) This suction pipe is flexible and easily bends, and as the chemical solution in the tank decreases, the strainer may be exposed above the liquid surface, making it impossible to suck out the chemical solution.

In addition, since the inner diameter of the opening where the screw cap is removed is larger than the outer diameter of the suction pipe, water (rainwater, etc.) or dirt from outside the tank may enter the tank through the gap during suction. , mixed into the drug solution. Furthermore, depending on the type of chemical solution, separation gas may be generated in the tank during suction, and this gas may leak out from the gap and corrode surrounding equipment.

(Means for Solving the Problem) Therefore, as a suction device for the chemical liquid, the above-mentioned suction pipe and the upper end portion of the chemical liquid tank are held by closing the openings, and almost the portion of the above-mentioned suction pipe that is inside the chemical liquid tank is held. It is characterized by comprising a rigid guide member surrounding the entire length, and a seal member holding the suction pipe inside the guide member.

(Function) The chemical solution in the tank is sucked out by a suction pipe whose portion inside the tank is surrounded by a guide member.

The opening of the tank is closed by a guide member held there, and a seal member closes the space between the guide member and the suction pipe.

(Embodiment) In the illustrated embodiment, 1 is a flexible suction pipe made of soft synthetic resin, a strainer 2 is attached to its tip, and the other end is connected to the suction port of a chemical liquid pump.

3 is a guide member, which is a pipe made of hard synthetic resin such as PVC (hereinafter referred to as guide pipe); 4
Reference numeral 5 indicates a cylindrical seal member made of rubber (hereinafter referred to as a cylindrical seal), 5 a chemical liquid tank, and 6 an opening thereof. Note that the inner diameter of the guide pipe 3 is similar to that of a suction pipe or
The strainer 2 connected to its tip can easily pass through.

In this embodiment, in order to securely hold the upper end of the guide pipe 3 to the opening 6 of the tank and to close the opening 6, a screw cap 7, which is screwed into the opening 6 and installed, is provided on the upper surface of the screw cap 7, which is located at a point closer to the outer diameter of the guide pipe 3. A hole 7' with a large circumference is made, a rubber seal tube 8 whose outer diameter is one size larger than the inner diameter of the hole is fitted outside the guide pipe 3, and the seal tube 8 is pushed into the hole 7' from one end to close the seal tube. The annular groove 8' provided on the outer periphery of the hole 7' is engaged with the edge of the hole 7' for installation.

Further, the upper end of the guide pipe 3 is made into a wrapper shape by expanding the inner diameter upward, and the suction pipe 1 is gripped from around with a rubber cylindrical seal 4 passed through the outside of the suction pipe 1, and the upper end of the guide pipe 3 is held. Hold it fixed against the target.

The inner diameters of both the cylindrical seal 4 and the seal cylinder 8 are smaller at the top and bottom, and the cylindrical seal 4 is attached to the outer periphery of the suction pipe 1, and the seal cylinder 8 is attached to the guide pipe 3 due to the small diameter portions at the top and bottom.
Both the suction pipe 1 and the guide pipe 3 can be slid by touching the outer periphery of the pipe and pulling with a slight force.

The length of the guide pipe 3 should be such that when the screw cap 7 is attached to the opening 6 of the tank, it should be slightly away from the bottom of the tank as shown in Figure 1, or the lower end should be in contact with the bottom of the tank. In this case, a notch is provided at the bottom end so that the chemical solution enters the guide pipe through the notch.

To suck out the chemical solution in the tank, the strainer 2 at the tip of the suction pipe 1 is placed upright against the bottom of the tank, and the suction pipe 1 is placed against the cylindrical seal 4 so that it extends almost straight in the guide pipe 3. The suction pipe 1 is slid to determine the hanging length of the suction pipe 1 from the cylindrical seal 4, and then the chemical liquid pump is operated. As a result, even if the suction pipe 1 is flexible, the guide pipe 3
Since it hangs down inside, it does not bend or float and move around, and the upright strainer 2 can suck out the medicinal solution.

The opening 6 of the tank is closed with a screw cap 7 that fixes the upper end of the guide pipe 3 therein, and the space between the guide pipe and the suction pipe 1 is closed with a cylindrical seal 4. This prevents foreign matter such as dust from entering the tank from outside, and depending on the type of chemical solution, it can prevent separated gas generated within the tank from leaking out of the tank.

If necessary, a small hole 9 may be formed in the part of the guide pipe 3 above the seal cylinder 8 that is not covered from the inside by the cylindrical seal 4 and in the part that is inside the tank.
You may open the tank to communicate the inside of the tank with the outside. In this case, considering that the guide pipe 3 will be set in chemical liquid tanks of various depths by sliding against the seal cylinder, the small holes located in the tank should be opened near the bottom end with appropriate spacing. It is preferable to put

When the inside of the tank is communicated with the outside through the small hole 9 in this way, the separated gas generated inside the tank leaks out through the small hole, but the amount is so small that it causes almost no problem.

When the remaining amount of chemical solution in the tank becomes low, tilt the tank as shown in Fig. 1, push the suction pipe 1 against the cylindrical seal 4, and slide it so that the suction pipe hangs down from the cylindrical seal into the tank. By increasing the height a little, the strainer 2 connected to the lower end can be immersed in a pool of chemical liquid that has gathered due to the inclination of the tank, and can be sucked out without leaving much of the chemical liquid behind. still,
Although the chemical solution tank 5 can be tilted by hand in this way, it is possible to tilt the chemical solution tank 5 by hand, but by placing a stand under the lifting side of the bottom of the tank,
If you use this stand to maintain the tilted position, it will save you a lot of trouble.

Although only one suction pipe 1 is illustrated in this embodiment, a plurality of suction pipes 1 may be provided to supply chemical liquid to a plurality of locations.

In addition, although the guide member is pipe-shaped and the seal member is cylindrical, the guide member is not limited to this, and the guide member can be used to prevent the suction pipe from bending or floating, and the seal member can be used to prevent the suction pipe from floating. Any material may be used as long as it can hold the inside of the guide member.

(Effects of the invention) According to the invention, the part of the suction pipe that is easily bent inside the tank is surrounded by a rigid guide pipe,
Since suction is performed by sliding the suction pipe against the cylindrical seal and adjusting the hanging length within the tank according to the depth of the tank, it is possible to reliably suction out almost the entire amount of the chemical solution in the tank.

Further, it is possible to almost prevent foreign matter such as dust from entering the tank during suction, and also prevent gas from being discharged from the tank.

[Brief explanation of drawings]

Fig. 1 is a sectional view of an embodiment of the present invention in a suction state, and Fig. 2 is an enlarged sectional view of the main parts of the same.
In the figure, 1 is a suction pipe, 3 is a guide pipe, 4 is a cylindrical seal, 5 is a chemical tank, and 6 is an opening thereof.

Claims (1)

[Scope of utility model registration request] A flexible suction tube made of a soft material that is inserted through an opening into a chemical liquid tank and sucks out the internal chemical liquid, and a flexible suction tube whose upper end is held by closing the opening, and which is inserted into the chemical liquid tank. A liquid medicine suction device comprising: a rigid guide member that surrounds substantially the entire length of the portion; and a seal member that holds a suction tube inside the guide member.