JPS644690Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a metering container capable of measuring a certain amount of liquid by operating a piston mechanism.

(Prior art) Conventionally, in many metered containers, the cap is removed and the liquid content is transferred to another measuring device before being measured.
This method had the drawback of requiring two operations: removing the cap and transferring the contents, which required time and effort during measurement.

Therefore, in recent years, a metering container has been devised in which a piston mechanism is provided in the cap and the opening of the container body so that the content can be measured only by operating the piston mechanism.

(Problem to be solved by the invention) By the way, in this type of metering container, when measuring the liquid content, the piston is removed from the cylinder and outside air is introduced into the cylinder to prevent the inflow of the liquid content. What stops it is known.

However, in the case of such a conventional example, when the piston is removed from the cylinder, the inside of the cylinder is under negative pressure, so a shock occurs when the piston is removed, causing the cylinder to swing, causing the liquid filled in the cylinder to drain. There was a problem that there was a risk of overflowing from the cylinder.

On the other hand, as another conventional example, a deformable piston member made of an elastic material such as rubber is placed over the opening of the cylinder, and by deforming the piston member and creating a negative pressure inside the cylinder, the liquid inside the cylinder is released. It is also known that there is an inflow of

However, in such conventional examples, a structure is not adopted in which outside air is taken in when the content liquid flows in, and the valve closes when the internal pressure in the cylinder becomes almost equal to atmospheric pressure due to the restoring force of the piston member, and the content liquid flows out. Since the inflow of water is stopped, it is difficult to perform accurate measurement as it depends on the elastic force of the piston member, and especially if the elastic force of the piston member has decreased due to long-term use, measurement errors may occur. The problem was that it got too big.

Furthermore, in the conventional example described above, the cap is rotated in order to form a passage for introducing the liquid content into the cylinder, a passage for exhaust when the piston is installed, or to perform a metering operation. However, in this case, there was a problem that the weighing procedure became complicated and work efficiency was poor, especially when continuous weighing operations were performed. In addition, when the cap is loosened to form an exhaust passage when the piston is installed, there is a problem in that the exhaust performance is not very good and the piston cannot be inserted smoothly.

Therefore, this paper was developed in order to solve the above-mentioned problems of the prior art.The purpose of this paper is to make it possible to perform each operation simply and smoothly, and to accurately measure the content liquid. The purpose of the present invention is to provide a quantitative container that can be used for various purposes.

(Means for solving the problem) In order to achieve the above purpose, in the present invention,
A cylinder part is provided in the cap main body provided at the opening of the container main body via a connecting part, the hollow interior of the cylinder part is used as a metering chamber, a piston operating body is inserted into this metering chamber, and the bottom of the cylinder portion is an outlet for guiding the liquid content in the container body to the metering chamber; a valve body for introducing the liquid content that opens and closes the outlet depending on the internal pressure in the metering chamber; An air vent port for guiding the pressurized air into the container body, and an exhaust valve body that opens and closes the air vent port depending on the internal pressure in the metering chamber, and the piston is mounted at a predetermined position on the peripheral wall of the cylinder portion. In order to stop the flow of liquid into the metering chamber when a predetermined amount of content liquid is filled during operation of the operating body, an air intake port is provided for introducing outside air into the metering chamber, and the piston operating body is connected to the connecting portion. It is characterized by having an exhaust port for discharging the air inside the container body to the outside of the container when the container is inserted into the metering chamber.

(Operation) When the content liquid is measured in the device having the above-mentioned configuration, the piston operating body inserted in the metering chamber of the cylinder is first pulled upward. Then, the inside of the cylinder becomes negative pressure, and the valve body for introducing the content liquid opens the outlet, and the content liquid in the container body flows into the metering chamber. Then, when the piston operating body reaches the position of the air intake port provided at a predetermined position on the peripheral wall of the cylinder, outside air is introduced into the metering chamber in a negative pressure state through the air intake port, and the pressure inside the metering chamber becomes equal to atmospheric pressure, so that the inflow of the content liquid stops, and at the same time, the rise of the liquid level in the metering chamber also stops. At this point, the valve body for introducing the content liquid closes the outlet, and the metering chamber is filled with a certain amount of the content liquid. After that, the piston operating body is removed from the cylinder, and since the internal pressure of the cylinder is equal to atmospheric pressure, the removal operation can be performed smoothly with little force.

On the other hand, when the piston operating body is inserted into the cylinder section to attach the piston operating body after the discharge operation of the content liquid is completed, the air vent that was blocked by the exhaust valve body is opened, and pressurized air escapes from the air vent. The liquid bypasses the container body and is discharged to the outside of the metering container from an exhaust port provided at the connection between the cap body and the cylinder section. In this case, the pressurized air in the cylinder portion is smoothly discharged, so that the piston operating body can be smoothly inserted with a small amount of force. Further, when the insertion of the piston operating body is completed, the air vent port is closed by the exhaust valve body, and the next metering operation can be performed immediately.

(Example) The present invention will be described below based on the illustrated example.

In FIGS. 1 and 2 showing an embodiment of the quantitative container according to the present invention, 1 is a container body having an opening 11, 2 is a cap body provided at the opening of the container body, and this cap body 2 has a cylindrical upper cylinder part 21 with an upward opening at its center, and the cylinder part 21 has a connecting part 22 on the outside.
It is provided with a concentric outer peripheral side wall 23 via. Thus, the cylinder portion 21 is connected to the container main body opening 11.
The hollow interior thereof forms a metering chamber 24. Reference numeral 25 denotes an outlet formed at the center of the bottom of the cylinder portion 21, which guides the content W from the container body 1 into the metering chamber 24. Reference numeral 26 designates an air vent hole similarly formed in the bottom surface of the cylinder section, which is used to discharge pressurized air to the outside when the pressure inside the cylinder section 21 increases. Furthermore, 27 closes the air vent 26 when the cylinder internal pressure is low;
On the other hand, it is an exhaust valve body that opens an air vent port 26 to extract pressurized air to the outside when the internal pressure of the cylinder increases. 28 is an air intake port formed at a predetermined position above the peripheral wall of the cylinder portion 21;
When sucking out the content W from the container body 1 into the metering chamber 24 and measuring it, the pressure inside the cylinder is adjusted to an external pressure when necessary to prevent the content W that has flowed into the metering chamber 24 from overflowing to the outside of the cylinder. This is to equalize the atmospheric pressure. Note that 29 is the cylinder part 2
1 and the upper edges of the outer circumferential side wall 23. Pressurized air is extracted from the air vent 26 on the lower surface of the cylinder part 21 into the container body 1 through the exhaust port 29. It is discharged outside the container.

3 is a piston operating body, and the piston operating body 3 is a piston 3 that slides inside the cylinder portion 21.
1 and a piston shaft portion 3 connected to the piston 31
It consists of 2. Reference numeral 33 denotes a valve portion provided on the piston shaft portion 32, which is connected to the exhaust port 2 of the cap body 2.
It acts to open and close 9.

A valve body 4 is disposed in the cylinder portion 21 and is installed on the bottom surface of the cylinder portion 21 for introducing the liquid contained therein.
The valve body 4 serves to open and close an outlet 25 through which the liquid content W from the container body 1 is guided into the metering chamber 24.
The valve body 4 is composed of a support part 4a provided at the bottom of the cylinder 21 and having a plurality of outlets 41, and an elastic valve part 4b fixed to the underside of the support part 4a and in close contact with the outlets 25. When the piston 31 is raised in the cylinder part 21 to suck out the liquid content W from the container body 1, the valve body 4 opens the outlets 25,
When the operation of sucking out the content liquid W is completed, the outlet 25 is automatically closed.

Reference numeral 5 denotes a conduit held at the bottom surface of the cylinder portion 21 of the cap body, which guides the liquid content W from the container body 1 to the outlet 25 of the cap body.

As shown in FIG. 1, the metering container constructed as described above has a cap body 2 attached to a container body 1, and a piston operating body 3 inserted into a cylinder portion 21. When measuring the content liquid W, use the piston operating body 3
When the cylinder part 21 is raised, a negative pressure is created in the cylinder part 21, and the liquid content W is guided into the conduit 5 and flows into the metering chamber 24. The valve portion 4b of the valve body 4 is filled with liquid W.
The content liquid W separates from the outlet 25 due to the flow of water, keeps the outlet 25 open during this suction operation, and continues to flow into the metering chamber 24 as the piston operating body 3 rises. When the piston 31 is raised to the height of the air intake port 28, outside air is taken into the metering chamber 24 under negative pressure through the air intake port 28, and the pressure inside the metering chamber 24 becomes equal to atmospheric pressure. Therefore, the inflow of the content liquid W is stopped, and at the same time, the rise in the liquid level in the metering chamber 24 is also stopped. When the inflow of the liquid content W stops, the outflow port 25 is closed by the elastic valve portion 4b, and a certain amount of the liquid content W enters the metering chamber 24, and the metering operation ends here. From now on, the piston operating body 3 will be replaced with the cylinder part 21.
It is completely extracted from inside, the cylinder part 21 is opened, and the content liquid W is discharged. In this case, since the internal pressure of the cylinder section 21 is equal to atmospheric pressure, the extraction operation can be performed smoothly with a small amount of force, and no shock is applied to the cylinder section 21.

After the discharge operation is completed, when the piston operating body 3 is inserted into the cylinder 21 again and lowered, the pressure inside the cylinder part 21 becomes high, and the air vent that was blocked by the valve body 27 is opened, and the pressurized air is released. The air escapes through the air vent 26, bypasses the inside of the container body 1, and is discharged from the exhaust port 29 to the outside of the metering container. When the exhaust port 29 of the cap body is closed by the valve portion 33 of the piston operating body, the discharge of air from the container body 1 is stopped, the air vent 26 is also closed again, and the piston operating body 3 stops descending. Thereafter, by repeating the same reciprocating operation of the piston operating body 3, a certain amount of the content liquid W is measured and discharged.

(Effects of the invention) As described above, the present invention is equipped with a valve body for introducing liquid content that opens and closes the outlet of the cylinder part according to the internal pressure in the metering chamber, so there is no need to operate the cap at all. The content liquid can be measured simply by operating the piston operating body, and work efficiency is improved, especially when continuous measuring operations are performed.

In addition, since the amount of liquid flowing into the metering chamber is regulated by taking in outside air from the air intake port provided at a predetermined position on the peripheral wall of the cylinder, the amount of liquid flowing into the metering chamber is regulated. There is no overflow, and a constant amount of liquid is always introduced into the metering chamber.
The content liquid can be measured accurately.

Furthermore, since the pressurized air in the metering chamber is discharged to the outside of the container through the air vent port of the cylinder section opened by the exhaust valve body and the exhaust port of the connecting section, when the piston operating body is inserted into the metering chamber, It can be inserted smoothly without experiencing resistance from pressurized air. In this case, the air vent port is closed by the exhaust valve body when the piston operating body is inserted, so there is no need to tighten the cap in preparation for the next metering operation as in the conventional case.
As a result, the operation becomes simple, and work efficiency can be improved, especially when continuous weighing operations are performed.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a vertical sectional view of the main part showing the sealed state of the metering container, and FIG. 2 is a longitudinal sectional view of the main part showing the state of the metering container during measurement. It is. Explanation of symbols: 1... Container body, 11... Opening, 2... Cap main body, 21... Cylinder part, 22... Connecting part, 23... Outer peripheral side wall, 24...
...quantity chamber, 25, 41...outlet, 26...air vent, 27...valve body (exhaust valve body), 28...
Air intake port, 29... Exhaust port, 3... Piston operating body, 31... Piston, 32... Piston shaft portion, 33... Valve portion, 4... Valve body (valve body for introducing liquid content), 4a ...Support part, 4b...Valve part, 5...Conduit, W...Content liquid.

Claims (1)

[Scope of utility model registration request] A cylinder part is provided in the cap main body provided at the opening of the container main body via a connecting part, the hollow interior of the cylinder part is used as a metering chamber, a piston operating body is inserted into this metering chamber, and the bottom of the cylinder portion is an outlet for guiding the liquid content in the container body to the metering chamber; a valve body for introducing the liquid content that opens and closes the outlet depending on the internal pressure in the metering chamber; An air vent port for guiding the pressurized air into the container body, and an exhaust valve body that opens and closes the air vent port depending on the internal pressure in the metering chamber, and the piston is mounted at a predetermined position on the peripheral wall of the cylinder portion. In order to stop the flow of liquid into the metering chamber when a predetermined amount of content liquid is filled during operation of the operating body, an air intake port is provided for introducing outside air into the metering chamber, and the piston operating body is connected to the connecting portion. 1. A metering container characterized by being provided with an exhaust port for discharging air inside the container body to the outside of the container when the container is inserted into a metering chamber.