JPH0940048A - Constant volume injection valve capable of charging with pressure and charging method with pressure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To securely charge a pressurized gas and easily actuate an injection valve, by connecting a fuel supply pipe to a short cylinder for the pipe, installed at the lower part of the lower cover for supporting a packing. SOLUTION: A valve housing 3 having a built-in valve stem 2 is fitted to the inside of the central opening of a mountain cap 1 and a constant volume infection chamber is formed at the upper part of the valve housing 3. A projection 9 opening/closing the valve is provided at the lower end of the vertically moving valve stem 2, in the central part of the constant volume injection chamber, and a packing 7 having an opening at the position opposite to the projection 9 opening/closing the valve is arranged. A lower cover 12 to support the packing, having a pierced hole at the lower position of the packing 7 is provided and a groove 11 is formed at the upper end of the lower cover 12 supporting the packing and a short cylinder 14 for fitting the fuel supply pipe is provided at the lower part of the lower cover 12 and then a fuel supply pipe 13 is connected to the short cylinder 14. In this way, pressurized gas can be charged with pressure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a constant-pressure injection valve capable of pressurizing and filling, and a method of pressurizing and filling the constant-quantity injection valve. More particularly, the upper portion of the valve housing is fitted inside the central portion of a mountain cap, Form a fixed quantity injection chamber in the upper part of, and give the packing located below the fixed quantity injection chamber a characteristic function, push down the valve stem, enlarging the middle part from the lower end part of the packing, The tightness of the lower end of the packing is increased, and the radial groove formed on the upper end of the packing supporting lower lid located below it is blocked to prevent leakage from that part, and the injection material is added. At the time of injecting and filling the pressurized gas, a passage for injecting and filling the pressurized gas of the propellant to be the content is formed between the outer peripheral surface of the lower end portion of the packing having the reduced diameter and the inner peripheral surface of the valve housing. The pressurizing and filling passage for the pressurized gas and the radial groove formed on the upper end of the packing supporting lower lid are made to communicate with each other as a passage for injecting and filling the pressurized gas for the propellant, and the propellant is added. The present invention relates to a constant pressure injection valve capable of pressurizing and filling through a communicating passage of a pressure gas for injecting and filling, and a pressurizing and filling method of the constant volume injection valve.

[0002]

2. Description of the Related Art Conventionally, a technique for pressurizing and filling an aerosol injection container has been studied and advanced. However, in an aerosol injection container having a constant-quantity injection valve, an aerosol injection container which has a relatively simple structure but can be reliably pressure-filled and easily operated has not yet been developed.

[0003]

As described above, a technique for pressurizing and filling an aerosol injection container has been studied in the past, and the technique for pressurizing and filling each time has been improved. However, in an aerosol injection container having a fixed amount injection valve, an aerosol injection container that can be reliably pressure-filled and can be easily operated has not yet been developed. Therefore, the first object of the present invention is to solve the above problems. In addition, the stem rubber portion is used as a discharge side valve member, a fixed amount injection chamber is formed in an upper portion of a valve housing having a stem rubber, and a packing located below the fixed amount injection chamber is used as an inflow side valve member, Fixed amount by pressurizing filling so that the discharge piston valve mechanism may have a characteristic function by the valve member on the inflow side and the valve member on the discharge side formed by the valve member on the discharge side and the valve member on the inflow side It is a second object of the present invention to provide a method for pressurizing and filling an injection valve and a fixed-quantity injection valve.

[0004]

According to the present invention, an upper portion of a valve housing is fitted inside a central portion of a mountain cap, a fixed quantity injection chamber is formed in the upper portion of the valve housing, and the fixed quantity injection chamber is formed in the central portion. A valve opening / closing projection is provided at the lower end of the valve stem that operates in the vertical direction, and a packing having an opening formed so that the valve opening / closing projection is fitted is provided at a position facing the valve opening / closing projection. The packing supporting lower lid having a through hole at the lower position of the packing has a radial groove formed at the upper end of the packing supporting lower lid, and the liquid supply pipe is provided below the packing supporting lower lid. A fixed-quantity injection valve capable of pressurizing and filling is provided with a short tube portion for mounting, and a liquid supply pipe is connected to the short tube portion. Further, the present invention always has a lateral hole of a valve stem and an outer peripheral portion thereof. Located at And position the inner peripheral portion of the rubber,
The side hole of the valve stem is closed by the inner peripheral part of the stem rubber, and when used, the valve stem is pushed down so that the valve opening / closing protrusion on the lower end of the valve stem faces the valve opening / closing protrusion. Fit in the upper opening of the packing located at the position where it is located, and further push down the valve stem to expand the intermediate part from the lower end of the packing, and at the same time, enlarge the lower end of the packing, Increasing the degree of adhesion between the outer peripheral surface of the lower end of the packing having a large diameter and the inner peripheral surface of the valve housing to prevent leakage from that part, and inject and fill the pressurized gas of the propellant as the content. Occasionally, a passage for injecting and filling the pressurized gas of the propellant, which is the content, is formed between the outer peripheral surface of the lower end portion of the reduced-diameter packing and the inner peripheral surface of the valve housing, and is positioned below the passage. The radial groove formed on the upper end of the packing supporting lower lid is made to communicate with each other, and even if the upper end opening of the packing is closed, the radiation formed on the upper end of the packing supporting lower lid. A method of pressurizing and filling a metered-quantity injection valve, characterized in that a fluid can be moved through a groove portion in the direction to enable pressurization and filling.

[0005]

According to the present invention, the upper portion of the valve housing is fitted to the inside of the central portion of the mountain cap, the fixed amount injection chamber is formed in the upper portion of the valve housing, and the valve which operates vertically in the central portion of the fixed amount injection chamber. A valve opening / closing projection is provided at the lower end of the stem, and a packing having an opening formed so that the valve opening / closing projection is fitted is provided at a position facing the valve opening / closing projection, and below the packing. It has a packing support lower lid with a through hole in its position, a groove is formed in the radial direction at the upper end of the packing support lower lid, and a short pipe portion for mounting the liquid supply pipe is provided under the packing support lower lid. Since it is a fixed quantity injection valve that can be pressurized and filled by connecting the liquid supply pipe to its short cylinder part, the valve parts formed at the upper and lower parts of the constant quantity injection chamber formed at the upper part of the valve housing are always of Closing the valve portion parts moiety, it can make quantitative accommodating contents in metered dose chamber. During use, the valve stem that operates in the vertical direction is pressed downward, and the valve opening / closing projection that is provided at the lower end of the valve stem that operates in the vertical direction is installed in the center of the fixed quantity injection chamber. While fitting the opening of the packing provided at the position facing the protrusion into the closed state and closing the opening of the packing of the valve portion of the lower portion, the valve of the upper portion is closed. With the portion opened, the content for fixed quantity injection inside the fixed quantity injection chamber can be fixedly injected from the injection port to the outside. When a fixed amount is injected from the inside of the injection container, the valve stem that operates in the vertical direction is pushed downward from above to fit the valve opening / closing projection into the upper opening of the packing, and further, to move the valve stem downward. The inner peripheral surface of the valve housing and the outer peripheral surface of the enlarged lower end portion of the packing by enlarging the intermediate portion from the lower end portion of the packing to increase the diameter of the lower end portion of the packing. The tightness of the space between the two parts is made strong so as not to leak from that part, and when the pressurized gas of the propellant to be the content is injected and filled, the valve stem is pushed down from the upper side to the valve opening / closing projection. Part of the packing into the upper opening of the packing, and further pushing down the valve stem to expand the middle part from the upper part of the packing, and at the same time, lower the lower part of the packing. Even if the upper end opening of the packing is closed by communicating the radial groove formed on the upper end of the packing supporting lower lid located below the packing by reducing the diameter. The fluid may move through a radial groove formed on the upper end of the lower lid part. Therefore, it is possible to form a passage for injecting and filling the pressurized gas of the propellant, which is the content, between the outer peripheral surface of the lower end portion of the reduced-diameter packing and the inner peripheral surface of the valve housing for pressure filling. . Further, according to the present invention, the lateral hole of the valve stem is always located at the inner peripheral portion of the stem rubber located at the outer peripheral portion thereof, and the lateral hole portion of the valve stem can be closed by the inner peripheral portion of the stem rubber. To Then, at the time of use, the valve stem is pushed down to fit the valve opening / closing projection provided on the lower end of the valve stem into the upper opening of the packing located at a position facing the valve opening / closing projection, and further ,
The valve stem is pushed downward to enlarge the intermediate portion from the lower end portion of the packing, and at the same time, the lower end portion of the packing is enlarged, and the outer peripheral surface of the lower end portion of the enlarged packing and the valve housing. It is possible to increase the degree of adhesion between the inner peripheral surfaces of and to prevent leakage from that portion. Then, when the pressurized gas of the propellant, which is the content in the injection container in order to pressurize and fill it through the metering valve, is injected and filled from the opening of the valve stem, a stem rubber such as a stem rubber attached to the valve stem is filled. Open the first valve, and insert the valve opening / closing projection at the lower end of the valve stem into the opening at the upper end of the packing that will become the second valve, and close the opening at the upper end of the packing that will become the second valve. Further, by pushing down the valve stem, a passage for injecting and filling the pressurized gas of the injection material formed between the outer peripheral surface of the lower end portion of the packing having the reduced diameter and the inner peripheral surface of the valve housing is formed. The pressurized gas of the propellant passes through, and then the radial groove formed on the upper end of the packing supporting lower lid located below it serves as a passage for injecting and filling the pressurized gas of the propellant, and the injection is performed. Pressurized gas of material Pressurized gas of the injection material is injected and filled through the radial groove that serves as the inlet / filling passage, and then the short pipe portion for mounting the liquid supply pipe provided under the packing supporting lower lid is used to pressurize the injection material. It is possible to enable the pressure filling through the short pipe portion for mounting the liquid supply pipe of the injection filling passage of the pressurized gas of the injection material.

[0006]

Embodiment 1 In the present invention, an upper portion of a valve housing having a valve stem in which an upper end portion of a valve stem is inserted inside an opening in a central portion of a mountain cap is fitted inside the central portion of the mountain cap, The lower part of the valve stem is supported by an elastic standing piece that is erected upward from the lower bottom part of the upper part of the valve stem, and a fixed quantity injection chamber is formed in the upper part of the valve housing, and the center of the fixed quantity injection chamber is formed. A valve opening / closing projection is provided at the lower end of the valve stem that operates in the vertical direction, and a packing having an opening formed so that the valve opening / closing projection is fitted at a position facing the valve opening / closing projection. A packing supporting lower lid having a through hole is provided at a position below the packing, and a cross section of the packing supporting lower lid is radially arranged at an upper end portion of the packing supporting lower lid. It is formed in a triangular and / or quadrangular groove, and a short pipe part for mounting the liquid supply pipe is provided under the packing supporting lower lid, and the liquid supply pipe is connected to the short cylinder part. The inner peripheral part of the stem rubber located in the outer peripheral part of the lateral hole of is located, and the lateral hole part of the valve stem is closed by the inner peripheral part of the stem rubber, and in use, the valve stem is pushed down,
Fit the valve opening / closing projection provided on the lower end of the valve stem into the upper opening of the packing located at a position facing the valve opening / closing projection, and further push the valve stem downward to lower the packing. The middle part of the packing is enlarged, and at the same time, the lower end of the packing is densified to prevent leakage at that part, and the radial direction formed on the upper end of the packing supporting lower lid located below the packing The flow path from the groove having a triangular and / or quadrangular cross section is blocked so as not to communicate with each other, the upper end opening of the packing is closed, and the radial direction formed at the upper end of the packing supporting lower lid part. The fluid is prevented from moving through the groove portion of the valve, and at the time of injecting and filling the pressurized gas of the propellant as the content, the outer peripheral surface of the lower end portion of the reduced-diameter packing and the valve housing A contents become pressurized fillable metered dose valve that allows the formation to pressure fill the injection filling passage of the pressurized gas injection material between the inner peripheral surface of the ring.

[0007]

[Embodiment 2] According to the present invention, an upper portion of a valve housing is fitted inside a central portion of a mountain cap, and a valve stem accommodating portion serving as a metering injection chamber is provided in an upper portion of the valve housing. A semi-spherical portion is formed in an intermediate portion of the valve, and a lower surface portion of the hemispherical portion is supported upward by an upper portion including an upper end portion of an elastic rising protrusion that is erected upward from a lower bottom portion of the valve housing. , A stem rubber is arranged between the upper surface portion of the valve housing and the portion on the back side of the central portion of the mountain cap, and a horizontal hole communicating with the vertical hole of the valve stem by the inner peripheral edge portion of the opening at the center of the stem rubber,
Always keep it closed, and when using it, push down the valve stem that operates in the vertical direction, remove the horizontal hole that communicates with the vertical hole of the valve stem from the inner peripheral edge of the opening at the center of the stem rubber, and open it. The valve opening / closing projection provided on the lower end of the valve stem is positioned so that it can be fitted into the opening at the center of the packing located below the valve opening / closing projection, and the valve opening / closing projection is located at a position facing the valve opening / closing projection. A packing having an opening formed so that the opening / closing protrusion is fitted is supported by the upper surface of the packing supporting lower lid having a through hole at the lower position of the packing, and is supported on the upper end of the packing supporting lower lid. The formed radial groove is used as a passage for fluid, and a short pipe part for mounting a liquid supply pipe is provided under the packing supporting lower lid, and the liquid supply pipe is connected to the short pipe part. A pressure fillable quantitative injection valve can make filling and ejection through.

[0008]

[Third Embodiment] In the present invention, the upper portion of the valve housing is fitted inside the central portion of the mountain cap, the fixed amount injection chamber is formed in the upper portion of the valve housing, and the central portion of the fixed amount injection chamber operates in the vertical direction. A valve opening / closing protrusion is provided at the lower end of the valve stem, and a packing having an opening formed so that the valve opening / closing protrusion is fitted is disposed at a position facing the valve opening / closing protrusion. A lower lid for packing support having a through hole at a lower position of
A groove is formed in the upper end of the packing supporting lower lid in the radial direction, and the lateral hole of the valve stem is normally located at the inner peripheral portion of the stem rubber located at the outer peripheral portion of the lateral hole. Is closed by the inner peripheral part of the stem rubber, and when using, push down the valve stem,
Fit the valve opening / closing projection provided on the lower end of the valve stem into the upper opening of the packing located at a position facing the valve opening / closing projection, and further push the valve stem downward to lower the lower end of the packing. The middle part of the packing is enlarged, and at the same time, the tightness of the lower end of the packing is strengthened so that it does not leak from that part. Even if the upper end opening of the packing is closed by connecting the radial groove formed on the upper end of the packing supporting lower lid located below the packing to reduce the diameter of the packing supporting lower lid. A fluid is allowed to move through a radial groove formed at the upper end of the lid, and the contents are provided between the outer peripheral surface of the lower end of the packing having a reduced diameter and the inner peripheral surface of the valve housing. A pressure fillable quantitative injection valve was characterized by forming an injection filling passage of the pressurized gas injection material made to allow pressure filling.

[0009]

[Effect] The present invention is a valve in which an upper portion of a valve housing is fitted inside a central portion of a mountain cap, a fixed amount injection chamber is formed in the upper portion of the valve housing, and a valve which operates vertically in the center portion of the fixed amount injection chamber. A valve opening / closing projection is provided at the lower end of the stem, and a packing having an opening formed so that the valve opening / closing projection is fitted is provided at a position facing the valve opening / closing projection, and below the packing. It has a packing support lower lid with a through hole in its position, a groove is formed in the radial direction at the upper end of the packing support lower lid, and a short pipe portion for mounting the liquid supply pipe is provided under the packing support lower lid. Since it is a fixed quantity injection valve that can be pressurized and filled by connecting the liquid supply pipe to its short cylinder part, the valve parts formed at the upper and lower parts of the constant quantity injection chamber formed at the upper part of the valve housing are always of Closing the valve portion parts moiety, an effect that may no quantitative accommodate the contents into a metered dose chamber.
During use, the valve stem that operates in the vertical direction is pressed downward, and the valve opening / closing projection that is provided at the lower end of the valve stem that operates in the vertical direction is installed in the center of the fixed quantity injection chamber. While fitting the opening of the packing provided at the position facing the protrusion into the closed state and closing the opening of the packing of the valve portion of the lower portion, the valve of the upper portion is closed. There is an effect that the content for the fixed quantity injection inside the fixed quantity injection chamber can be quantitatively injected from the injection port by opening the part. When a fixed amount is injected from the inside of the injection container, the valve stem that operates in the vertical direction is pushed downward from above to fit the valve opening / closing projection into the upper opening of the packing, and further, to move the valve stem downward. The upper part of the packing to enlarge the intermediate part, and at the same time increase the diameter of the lower part of the packing, so that the outer peripheral surface of the lower end part of the large-diameter packing and the inner peripheral surface of the valve housing This has the effect of increasing the degree of adhesion between the two and preventing leakage from that portion. When injecting and filling pressurized gas into the propellant, which is the content, press the valve stem downward from above to fit the valve opening / closing protrusion into the upper opening of the packing, and further move the valve stem downward. Push down to expand the middle part from the bottom part of the packing,
At the same time, the lower end portion of the packing is reduced in diameter, and the radial groove formed on the upper end portion of the packing supporting lower lid located thereunder is made to communicate with each other so that the upper end opening portion of the packing is closed. However, there is an effect that the fluid can move through the radial groove formed at the upper end of the packing supporting lower lid. Further, a passage for injecting and filling the pressurized gas of the propellant to be the content may be formed between the outer peripheral surface of the lower end portion of the reduced-diameter packing and the inner peripheral surface of the valve housing to perform the pressure filling. effective. In addition, the present invention is such that the inner peripheral portion of the stem rubber located at the outer peripheral portion of the lateral hole of the valve stem is always located, and the inner peripheral portion of the stem rubber can close the lateral hole portion of the valve stem. There is. Then, at the time of use, the valve stem is pushed down to fit the valve opening / closing projection provided on the lower end of the valve stem into the upper opening of the packing located at a position facing the valve opening / closing projection, and further , The valve stem is pushed downward to enlarge the intermediate portion from the upper end portion of the packing, and at the same time, the lower end portion of the packing is enlarged, and the outer peripheral surface of the lower end portion of the enlarged packing and the valve. This has the effect of increasing the degree of adhesion between the inner peripheral surfaces of the housing and preventing leakage from that portion. Then, when the pressurized gas of the propellant, which is the content in the injection container in order to pressurize and fill it through the metering valve, is injected and filled from the opening of the valve stem, a stem rubber such as a stem rubber attached to the valve stem is filled. Open the first valve, and insert the valve opening / closing projection at the lower end of the valve stem into the opening at the upper end of the packing that will become the second valve, and close the opening at the upper end of the packing that will become the second valve. do it,
Further, by pushing down the valve stem, a passage for injecting and filling the pressurized gas of the injection material formed between the outer peripheral surface of the lower end portion of the reduced-diameter packing and the inner peripheral surface of the valve housing is added to the injection material. The pressurized gas passes through, and the radial groove formed on the upper end of the packing supporting lower lid located below it serves as a passage for injecting and filling the pressurized gas of the injection material, and injecting the pressurized gas of the injection material. The pressurized gas of the propellant is injected and filled through the radial groove that serves as the filling passage, and then the pressurized gas of the propellant is injected through the short pipe part for mounting the liquid supply pipe provided under the packing supporting lower lid. As a filling and filling passage, and
There is an effect that it is possible to perform the pressure filling through the passage for injecting and filling the pressurized gas of the propellant. In particular, the large diameter part of the lower end of the packing is always in close contact with the inner peripheral surface of the valve housing.When using, the valve stem is pushed down, and the lower end of the valve stem is inserted into the opening at the upper end of the packing. When the valve opening and closing projection of is fitted, the opening at the upper end of the packing is closed, and the lateral hole of the valve stem is opened, the degree of adhesion between the large diameter part of the lower end of the packing and the inner peripheral surface of the valve housing is Furthermore, there is an effect that the pressure rises and no leakage from that portion occurs. After that, when the pressing force on the valve stem in the depressed state is released, the elastic force of the packing restores the deformed packing to its original state and the depressed valve stem also returns to its original state due to the elastic force of the packing. There is an effect to obtain. Also, when the pressurized gas is filled under pressure, the packing is deformed by the pressure applied to the packing from above, and the diameter of the peripheral side surface of the packing is reduced and deformed, thereby forming a gap in the vertical direction, A pressurized filling passage for the pressurized gas is created in the gap, and the pressurized filling passage for the pressurized gas and the radial groove formed on the upper end of the packing supporting lower lid are injected. There is an effect that it can be communicated as a filling passage.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing one embodiment of a constant pressure injection valve capable of pressurizing and filling according to the present invention in a normal state, that is, when not in use.

FIG. 2 is a cross-sectional view taken along the line AA of the vertical cross-sectional view of the embodiment of the constant pressure injection valve capable of pressure filling according to the present invention shown in FIG. 1 when not in use. is there.

FIG. 3 is a vertical cross-sectional view of one embodiment of the pressurizing and filling quantitative injection valve according to the present invention shown in FIG.

FIG. 4 is a transverse cross section taken along the line AA of the vertical cross-sectional view of the embodiment of the constant pressure injection valve capable of pressure filling according to the present invention shown in FIG. It is a side view.

[Explanation of symbols]

1 mountain cap 2 valve stem 3 valve housing 4 lateral hole in the middle part of the valve stem 5 stem rubber 6 standing piece from the bottom of the valve housing 7 inverted bowl-shaped packing 8 inverted bowl-shaped packing opening 9 valve stem lower end 10 Radial groove with a triangular cross section at the upper end of the lower lid 11 Radial groove with a square cross section 12 Lower lid for packing the valve housing 13 Liquid supply pipe 14 Short pipe part for liquid supply pipe attachment 15 Annular thin shape Packing 16 Hemispherical part of the intermediate part of the valve stem 17 Downward cylindrical part of the housing 18 Flange part of the lower lid for packing support 19 Fixing recess of the housing 20 Flange part of the upper part of the housing

Claims (5)

[Claims] Claim: What is claimed is: 1. An upper portion of a valve housing is fitted inside a central portion of a mountain cap, and a fixed quantity injection chamber is formed in the upper portion of the valve housing, and a valve stem that operates vertically is formed in the central portion of the fixed quantity injection chamber. A valve opening / closing projection is provided at the lower end, and a packing having an opening formed so that the valve opening / closing projection is fitted is provided at a position facing the valve opening / closing projection, and the packing is provided below the packing. Having a packing support lower lid having a through hole, forming a groove portion in the radial direction at the upper end of the packing support lower lid, and providing a short pipe portion for mounting the liquid supply pipe under the packing support lower lid, A fixed-quantity injection valve that can be pressurized and filled by connecting a liquid supply pipe to the short cylinder part. 2. An upper portion of a valve housing is fitted inside a central portion of a mountain cap, and a fixed quantity injection chamber is formed in the upper portion of the valve housing, and a valve stem which operates vertically is formed in the central portion of the fixed quantity injection chamber. A valve opening / closing projection is provided at the lower end, and a packing having an opening formed so that the valve opening / closing projection is fitted is provided at a position facing the valve opening / closing projection, and the packing is provided below the packing. It has a packing support lower lid with a through hole, and a groove is formed in the radial direction at the upper end of the packing support lower lid, and the diameter is reduced when the pressurized gas of the propellant to be the content is injected and filled. A passage for injecting and filling a pressurized gas of a propellant as a content is formed between an outer peripheral surface of a lower end portion of the packing and an inner peripheral surface of the valve housing to enable pressure filling. Item 1 Pressure fillable metered dose valve. 3. An upper portion of a valve housing is fitted inside a central portion of a mountain cap, and a fixed amount injection chamber is formed in the upper portion of the valve housing, and a valve stem that operates vertically is formed in the center portion of the fixed amount injection chamber. A valve opening / closing projection is provided at the lower end, and a packing having an opening formed so that the valve opening / closing projection is fitted is provided at a position facing the valve opening / closing projection, and the packing is provided below the packing. Having a packing support lower lid having a through hole, a groove portion is formed in the radial direction at the upper end of the packing support lower lid, and at all times,
The inner hole of the stem rubber located on the outer peripheral part of the lateral hole of the valve stem is located, and the lateral hole part of the valve stem is closed by the inner peripheral part of the stem rubber, and the valve stem is pushed down when used. The valve opening / closing projection provided on the lower end of the valve stem into the upper opening of the packing located at a position facing the valve opening / closing projection, and further push down the valve stem to lower the packing. Enlarge the middle part from the lower end part, and at the same time, strengthen the adhesion of the lower end part of the packing so that it does not leak from that part, and at the time of injecting and filling the pressurized gas of the propellant as the content, the lower end of the packing By reducing the diameter of the part, the radial groove formed on the upper end of the packing supporting lower lid located below the part is communicated, and the upper opening of the packing is closed. Even if it is present, the fluid is allowed to move through the radial groove formed at the upper end of the packing supporting lower lid, and the outer peripheral surface of the lower end of the packing having a reduced diameter and the valve housing 2. A fixed quantity injection capable of pressure filling according to claim 1, wherein a passage for injecting and filling a pressurized gas of a propellant as a content is formed between the inner peripheral surfaces of the two to enable pressure filling. valve. 4. The valve stem lateral hole is always located at the inner peripheral portion of the stem rubber located at the outer peripheral portion thereof, and the lateral hole portion of the valve stem is closed by the inner peripheral portion of the stem rubber. , Push the valve stem downwards, and attach the valve opening / closing protrusion on the lower end of the valve stem.
Fit in the upper opening of the packing located at the position facing the valve opening / closing projection, and further push down the valve stem to expand the middle part from the upper part of the packing, and at the same time, lower the lower part of the packing. By increasing the diameter of the part, the adhesion between the outer peripheral surface of the lower end of the larger-diameter packing and the inner peripheral surface of the valve housing is strengthened so that leakage does not occur from that part, and the injection becomes the content. At the time of injecting and filling the pressurized gas of the material, a passage for injecting and filling the pressurized gas of the injection material to be the content is formed between the outer peripheral surface of the lower end of the reduced-diameter packing and the inner peripheral surface of the valve housing. Then, the radial groove formed in the upper end of the packing supporting lower lid located below the communicating groove is communicated, and even if the upper end opening of the packing is closed, Upper end The formed radially through the groove as the fluid can move, under pressure filling method of quantifying the injection valve of claim 1 wherein the said enabling pressurization packing. 5. The large diameter portion of the lower end of the packing is always in close contact with the inner peripheral surface of the valve housing, and when used, the valve stem is pushed down, and the valve stem is opened at the upper end of the packing. Fit the valve opening / closing projection at the lower end of the valve, close the opening at the upper end of the packing, and open the lateral hole of the valve stem, so that the large diameter part at the lower end of the packing and the inner peripheral surface of the valve housing come into close contact. The degree is
When the pressure on the valve stem in the depressed state is released, the deformed packing is restored to its original state by the elastic force of the packing, and the valve stem in the depressed state is prevented. Both are designed to be able to return to their original state by the elastic force of the packing, and when pressurizing and filling the pressurized gas, the packing is deformed by the pressure applied to the packing from above and the diameter of the peripheral side surface of the packing is reduced. By deforming, a gap is formed in the vertical direction, and a pressurizing and filling passage for the pressurized gas is generated in the gap, and the pressurizing and filling passage for the pressurized gas and the radiation formed on the upper end of the packing supporting lower lid. And a groove portion in the direction of the injection material are communicated with each other as a passage for injecting and filling the pressurized gas of the injection material, and pressure filling is enabled through a communication passage of the passage for injecting and filling the pressurized gas of the injection material. Pressurizing filling method for quantitative injection valve according to claim 1, wherein the.