JP6001253B2 - Check valve and container body using the same - Google Patents

Description

  The present invention relates to a check valve and a container body using the check valve, and in particular, quality by contact with air such as cosmetics such as skin lotion, facial cleansing cream / nutrition moisturizing cream, and seasoning foods such as sauce / jam / paste. Of containers that are filled with fluids such as liquids, creams, or gels, such as those that deteriorate or decrease, sealants for construction and industrial use, and solidified by contact with air such as adhesives and adhesives. The present invention relates to a check valve suitable for use in the mouth and neck and a container body using the check valve.

  A pressure discharge type container body as a container body filled with various fluids is suitable as a discharge container for various cosmetics and seasoning foods.

  The pressure discharge type container body applies a pressing force to the container body to discharge the fluid filled therein, and then releases the pressing force to release the container from the discharge port portion by the elastic restoring force of the container body. There was a problem that the outside air flowed back into the body and the quality of the filled fluid was deteriorated.

  In view of this, there has already been proposed a technique for preventing deterioration of the quality of the fluid by preventing the backflow of the outside air using a check valve at the mouth and neck of the container body that is the discharge port (see, for example, Patent Document 1). ).

JP 2011-037456 A

  The technique of patent document 1 is arrange | positioned inside the valve box attached to the mouth neck part of a container body, the valve which opens and closes the channel | path of the fluid formed in the bottom face in a valve box, and the elastic body of a valve. The inner sleeve nozzle and the fluid that has passed through the valve are not discharged immediately, but are discharged from the inner upper discharge port after passing from the outer side to the inner side of the inner sleeve nozzle. It is. Further, when the pressure on the container body is released, the valve is closed and the inside and outside of the container body are shut off to prevent deterioration of the quality of the fluid inside.

  However, in this technique, after the valve is closed, the fluid remaining from the valve-closed portion to the discharge port tip is always in contact with the outside air, so the quality of the remaining fluid is reduced (drying / solidification, Invasion / propagation of miscellaneous bacteria) cannot be prevented, and every time the discharge of the fluid is restarted, there is a problem that the fluid residue whose quality has deteriorated is always discharged first. .

  Therefore, when using the remaining fluid, there will be anxiety in terms of safety, etc., so in order to eliminate such anxiety, always discard the first discharged residue at the start of discharge. There is a problem that it is not only wasteful but also cumbersome.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a check valve capable of remarkably suppressing deterioration in quality of a discharged fluid and eliminating waste and complexity at the time of discharge, and a container body using the check valve.

  The present invention for solving the above problems has the following configuration.

1. In a check valve for a fluid container of pressure discharge type,
It is a check valve that opens and closes the valve body facing the valve seat of the check valve body against the elasticity of the elastic body by the pressure of the fluid,
A first valve seat formed on the fluid inlet side and facing the first valve body; and a second valve seat formed on the fluid outlet side and facing the second valve body;
The second valve body is directly or indirectly connected to the first valve body via a connecting rod,
The elastic body is formed integrally with the connecting rod and / or the first valve body;
In addition, the first valve body, the second valve body, the connecting rod and the elastic body are made of synthetic resin, and the check valve body has an opening at one end and a closing portion at the other end. The first valve main body portion and the cylindrical second valve main body portion having one end as an opening and the other end as a closing portion are screwed and fitted in the direction in which the openings face each other. A cylindrical body that is closed at both ends in a state of being joined by a joining means such as adhesion and welding , and the first valve seat and the second valve seat are provided at the closed parts at both ends,
The check valve body is configured to be attachable to the mouth and neck of a container body filled with a fluid with the first valve seat side facing the inside of the container body. .

2. The elastic body has a plate-like or rod-like configuration formed by extending from a middle portion of the connecting rod in a direction intersecting with the moving direction of the first valve body and the second valve body when the valve is opened and closed. The check valve according to 1 above.

3. The first valve body is urged from the second valve seat side with respect to the first valve seat to close the valve, and moves away from the first valve seat when the fluid is pressurized. It is a configuration that opens,
The second valve body is urged from the fluid outlet side with respect to the second valve seat to close the valve, and moves away from the second valve seat when the fluid is pressurized. The valve is configured to open,
3. The check valve as described in 1 or 2 above.

4 . The check according to any one of the above items 1 to 3 , wherein the check valve main body is in a liquid-tight and / or air-tight state when the first valve seat and the second valve seat are closed. valve.

5 . The check valve according to any one of claims 1 to 4 , wherein opening and closing of the first valve seat by the first valve body and opening and closing of the second valve seat by the second valve body are substantially simultaneous.

6). The first valve body, the check valve according to the 5 second valve body, connecting rod and the elastic body is characterized by a structure in a state of being integrally molded.

7 . The second valve body is connected to the first valve body in a loose manner by providing a telescopic floating part in a part of the connecting rod, and the second valve seat is opened by the second valve body, The check valve according to any one of the above items 1 to 4 , wherein the check valve is configured to operate with delay from the opening of the first valve seat by the first valve body.

8 . Above 1-7, characterized in that the arrangement of the small diameter than the diameter of the diameter of the first valve body side portion of the connecting rod is located in the flow path of the second valve seat portion when the second valve body opening The check valve according to any one of the above.

9. Said second valve body is Yes to face in the closed state to the second valve seat in a state of being pressed from the first valve seat side with respect to the second valve seat of the second valve body portion, the second valve body portion The first valve body faces the first valve seat in a closed state in a state where the first valve body is coupled , and the check valve body has a unit configuration having one valve chamber. 9. The check valve according to any one of 1 to 8 above.

10 . 10. A container body, characterized in that the check valve according to any one of 1 to 9 is used in a container mouth / neck portion.

11 . 11. The container body according to 10 above, wherein the container body is a pressure discharge type container.

12 . 12. The container body according to 10 or 11 above, wherein a discharge pipe is disposed in a portion of the mouth / neck portion of the container body downstream of the second valve seat of the check valve.

13 . The above-mentioned 10 characterized in that a metering unit is provided which is a mouth-neck portion of the container body and stores a fluid in a portion downstream of the second valve seat of the check valve and measures a discharge amount. Or the container body of 11 .

  According to the first aspect of the present invention, it is possible to provide a check valve that can remarkably suppress the deterioration of the quality of the discharged fluid and eliminate waste and complexity during discharge, and a container body using the check valve. .

  In particular, double check valves are provided in one valve chamber and two valve bodies are connected. Therefore, when the valve is closed, the closing performance is extremely high, and it is used for a container filled with fluid. Can suppress the deterioration / decrease or solidification of the quality of the fluid.

Further, the first valve body, the second valve body, the connecting rod and the elastic body that are always exposed to the fluid are made of synthetic resin, so that the fluid contains a salt content such as soy sauce or is acidic. Since no corrosion or rust occurs, there is no problem of mixing of corrosive substances and rust into the fluid, and there is an effect that the quality retention and safety are high and the risk of lowering the opening / closing function of the valve is low.
Furthermore, when the first valve seat and the first valve body are disposed on the side facing the inside of the container body, and the second valve seat and the second valve body are disposed on the discharge port side, the two valves are opened. The fluid can be discharged quickly, and when the valve is closed, the valve is double-closed, so that not only the discharge can be stopped reliably, but also the liquid leakage from the discharge port can be significantly suppressed, Furthermore, it is possible to prevent double entry of outside air into the container. Moreover, the first valve seat that shuts off the inside and outside of the container body and the fluid remaining outside the first valve body are shut off from the outside by the second valve seat and the second valve body, so that there is no intrusion of outside air and quality. Deterioration / decrease or solidification can be suppressed.
Therefore, even when the discharge is resumed, it is not necessary to discard the fluid remaining outside the first valve seat and the first valve body, that is, the fluid discharged first. Further, even if the fluid in the container is solidified by air contact such as a sealant material, it is not necessary to use the fluid all at once and can be used for a long time.

  According to the second aspect of the present invention, the valve can be reliably opened and closed by a simple-shaped elastic body.

  According to the third aspect of the present invention, both the first valve body and the second valve body can be opened smoothly by applying pressure to the fluid, and the pressure is released. Thus, the two valve bodies that have been in the open state can be quickly closed.

  In particular, since the pressure of the fluid is received and moved by the first valve body, and this movement can be transmitted to the second valve body, it is not necessary to consider the size of the pressure receiving surface of the second valve body. It is possible to design the second valve body to move according to the size of the pressure receiving surface on the one valve body side. That is, there is an advantage that the size of the second valve body can be freely set.

According to the fourth aspect of the present invention, it is possible to prevent the fluid from leaking to the outside and prevent outside air from entering from the outside. In particular, there is an effect that it is possible to suppress drying / deterioration / quality reduction or solidification or the like of the fluid remaining or staying between the first valve seat and the second valve seat.

According to the fourth aspect of the present invention, a double valve configuration can be achieved with a very simple configuration by opening and closing the valve by urging with an elastic body.

According to the fifth aspect of the present invention, the two valves can be opened and closed simultaneously.

According to the sixth aspect of the present invention, the number of parts can be reduced, and a total of four members, ie, two valve bodies, connecting rods and elastic bodies, which are movable parts, can be made into one part. Not only can assembly be performed, but there are few failures and maintenance is improved.

According to the seventh aspect of the present invention, by operating the valve opening of the second valve element later than the valve opening of the first valve element, the pressure is such that only the first valve element moves relative to the fluid. Even if it is a case where it adds, by setting it as the structure which the 2nd valve body is not yet valve-opened, the erroneous discharge at the time of pressurizing a fluid unintentionally can be suppressed. When the valve is closed, leakage of the fluid can be effectively prevented by closing the first valve body and the second valve body.

According to the eighth aspect of the present invention, it is possible to widen the flow path of the fluid in the second valve seat portion by making the diameter of the connecting rod of the second valve body side portion smaller than that of the first valve body side. Therefore, it is possible to increase the discharge amount when the second valve body is opened.

According to the ninth aspect of the present invention, since the check valve having a double valve in one valve chamber is configured as one unit, the container body can be simply attached to the container body. The discharge port can be made a check valve structure very easily.

According to the invention shown in claim 10 , the container body provided with the check valve can be obtained simply by attaching the check valve of the present invention to the container mouth neck of the container body.

According to the invention shown in claim 11 , the container neck of the pressurized discharge container can be configured as a check valve. In particular, a tube container is suitable as the pressurized discharge container.

According to the twelfth aspect of the invention, the discharge shape of the fluid to be discharged can be defined. As the discharge shape, the discharge diameter of the fluid to be discharged is specified by making the discharge pipe thick or thin, or the discharge form is specified such as DC discharge, diffusion discharge, jet discharge, etc. Can be mentioned.

According to the invention shown in claim 13 , it is possible to discharge a desired amount of fluid.

Cross sectional view showing an embodiment of a check valve according to the present invention and a container body using the check valve Explanatory sectional drawing explaining the valve opening and closing structure of the check valve shown in FIG. Two views showing another embodiment of a connecting rod (front view, plan view) Explanatory cross-sectional view showing an embodiment of a check valve using the connecting rod of FIG. Two views showing another embodiment of the elastic body (front view, plan view) Two views showing another embodiment of the elastic body (front view, plan view) Two views showing another embodiment of the elastic body (front view, plan view) Explanatory sectional view showing another embodiment of the check valve according to the present invention. Explanatory sectional view showing another embodiment of the check valve according to the present invention. Sectional drawing which shows the other Example of the container body which concerns on this invention Sectional drawing which shows the other Example of the container body which concerns on this invention

  Hereinafter, a check valve according to the present invention and a container body using the check valve will be described with reference to the drawings. 1, 2, 4, 8, 9, 10, and 11, the first valve body 11, the second valve body 13, and the connecting rod 18 are cross sections for the sake of clarity. It is shown as a front view rather than a figure.

The present invention relates to cosmetics such as skin lotions, facial cleansing creams and nutritional moisturizing creams, and those whose quality deteriorates or decreases due to contact with air such as seasoning foods such as jams and pastes, architectural and industrial sealant materials, Check valve suitable for use in the mouth and neck of a container body filled with a fluid such as a cream or gel substance that solidifies by contact with air such as an adhesive or an adhesive, and the like A container body,
As a specific implementation structure of the check valve, as shown in FIG. 1 and FIG.
In the check valve 1 that opens and closes the valve body facing the valve seat against the elasticity of the elastic body by the pressure of the fluid,
A first valve seat 12 formed on the fluid inlet side and facing the first valve body 11, and a second valve seat 14 formed on the fluid outlet side and facing the second valve body 13; ,
The second valve body 13 is integrally connected to the first valve body 11 via a connecting collar 18,
The elastic body 19 is formed integrally with the connection flange 18 and / or the first valve body 11 (only the connection flange 18 in this embodiment),
And the 1st valve body 11, the said 2nd valve body 13, the said connection collar part 18, and the said elastic body 19 make a main structure that it is a product made from a synthetic resin.

Further, the first valve body 11 is urged from the second valve seat 14 side with respect to the first valve seat 12 to close the valve, and from the first valve seat 12 when the fluid is pressurized. It is configured to open the valve by moving apart and
Further, the second valve body 13 is urged from the fluid outlet side with respect to the second valve seat 14 to close the valve, and moves away from the second valve seat 14 when the fluid is pressurized. By doing so, the valve is opened.

  The double valve opening / closing of the valve opening / closing of the first valve seat 12 by the first valve body 11 and the valve opening / closing of the second valve seat 14 by the second valve body 13 is the same as the first valve body 11 in this embodiment. Since the second valve body 13 is directly connected by the connecting rod 18, it is configured to operate substantially simultaneously. In the present embodiment, the four members of the first valve body 11, the second valve body 13, the connecting rod 18 and the elastic body 19 are preferably integrally formed as one part, but the first valve body 11 and the second valve body 13 are directly connected to the connecting rod 18 and the elastic body 19 is integrally formed with the connecting rod 18 and / or the first valve body 11, two or more. The structure divided | segmented into these parts may be sufficient.

Further, the check valve body 17 of the check valve 1 includes a cylindrical first valve body 15 having one end as an opening and the other end as a closing portion, and one end as an opening and the other end as a closing portion. The cylindrical second valve main body portion 16 is formed into a closed cylindrical body at both ends by connecting the respective opening portions in opposite directions with a connecting means such as screwing, fitting, adhesion, and welding. Configured, the first valve seat 12 and the second valve seat 14 are respectively provided in the closed portions at both ends,
The check valve body 17 is attached to the mouth and neck portion 21 of the container body 2 (see FIG. 1C) filled with the fluid with the first valve seat 12 facing the inside of the container body 2. This is a possible configuration. Note that the mounting and fixing position is not limited to that shown in FIG.

As a configuration for opening and closing the valve using the pressure of the fluid, it is formed by extending from the middle portion of the connecting rod 18 in a direction crossing the moving direction of the first valve body 11 and the second valve body 13 at the time of opening and closing the valve. The elastic body 19 having a plate-like or rod-like (plate-like shape shown in FIG. 5 in this embodiment) configuration biases the first valve body 11 and the second valve body 13 in the valve closing direction. When the fluid pressure is applied to the first valve body 11 (and the second valve body 13), the first valve body 11 and the second valve body 13 move in the counter-biasing direction from the valve closed state. It is configured to open. When the fluid pressure is released, the first valve body 11 and the second valve body 13 are again moved in the direction of closing the valve by the urging force of the elastic body 19 and moved to the first valve seat 12 and the second valve seat 14. The valve abuts to close the valve.

  The first valve body 11, the second valve body 13, the connecting rod 18 and the elastic body 19 having the above-described configuration are made of a synthetic resin having an integral structure as described above, and a molding material for this type of synthetic resin valve body. A known publicly used synthetic resin is formed by a known publicly known molding means (for example, injection molding or the like).

  An assembly configuration of the check valve 1 including the above-described components will be described.

  First, the second valve body 13, which is integrated with the first valve body, the connecting rod 18 and the elastic body 19, is located on the first valve seat 12 side (FIG. 1) with respect to the second valve seat 14 of the second valve body 16. In (A), the second valve seat 14 is press-fitted from the lower side to the upper side so as to face the second valve seat 14 in the closed state, preferably in the biased state.

  Next, the first valve body portion 15 is coupled to the second valve body portion 16 so that the first valve body 11 faces the first valve seat 12 in the closed state, preferably in the biased state. The valve body 17 has a unit configuration having one valve chamber, and the assembly of the check valve 1 is completed.

  When the check valve 1 is configured as a unit having one valve chamber having a check valve body 17 as shown in this embodiment, the check valve 1 is closed when the first valve seat 12 and the second valve seat 14 are closed. It is preferable that the inside of the valve body 17 be configured to be liquid-tight and / or air-tight. According to such a configuration, leakage of the fluid to the outside can be further prevented, and intrusion of outside air from the outside can be further prevented. In particular, it has the effect of remarkably suppressing the drying / deterioration / quality deterioration, etc., of the fluid remaining / retained between the first valve seat 12 and the second valve seat 14.

  Next, the valve opening / closing configuration of the check valve 1 of the present invention having the above configuration will be described.

  FIG. 2A shows when the valve is closed. The first valve body 11 closes the first valve seat 12 by being in close contact with the first valve seat 12, and the second valve body 13 is the second valve seat 14. The second valve seat 14 is closed. In addition, the structure of the 2nd valve body 13 is not restricted to what is shown in figure, For example, the well-known public structure as shown by FIG. 4 or FIG. 11 of Unexamined-Japanese-Patent No. 2004-161336 may be sufficient.

  When pressure is applied to the fluid in the container body 2 by pressing the container body 2 with fingers or the like from the state of FIG. An arrow) is added.

  By applying this pressure, the first valve body 11 moves in the direction of separating from the first valve seat 12 as shown in FIG. At this time, the second valve body 13 connected to the first valve body 11 via the connecting rod 18 also moves simultaneously in the direction of separating from the second valve seat 14. The configuration of the first valve body 11 is not limited to the illustrated one, and may be a known and public configuration as shown in FIG. 1 of Japanese Utility Model Laid-Open No. 5-66378, for example.

  When the two valve bodies 11 and 13 move apart, the two valve seats 12 and 14 are opened, and the fluid passes through the first valve seat 12 and further passes through the second valve seat 14, thereby It is possible to discharge the fluid to The flow of the fluid when the valve is opened is indicated by an arrow Y.

  Next, when the pressure to the container body 2 or the like is released when a desired amount of fluid is discharged, the pressure on the first valve body 11 disappears, so the first valve body 11 and the second valve body 12 Are simultaneously moved back to the positions facing the first valve seat 12 and the second valve seat 14 by the urging force of the elastic body 19 to simultaneously close the valve (the state shown in FIG. 2A), and the discharge of the fluid is completed. To do.

  Due to the double valve blockage by the first valve body 11 and the first valve seat 12, and the second valve body 13 and the second valve seat 14, the fluid filled in the container body 2 is double cut off from the outside. Will be. Accordingly, it is possible to remarkably suppress the quality deterioration of the fluid.

  Further, the fluid that remains and stays on the downstream side of the first valve body 11 and the first valve seat 12 is in contact with the outside air in the prior art, and thus the quality deterioration is not avoided. Further, by blocking the second valve body 13 and the second valve seat 14 disposed downstream from the outside, it is possible to suppress the quality deterioration of the remaining / retained fluid. Therefore, even if the time until the next discharge has passed, there is little risk of drying and solidification, etc., and the remaining and staying fluid can be discharged quickly without discarding at the time of discharge. Therefore, waste and complexity at the time of discharge can be eliminated.

  The container body 2 to which the check valve 1 of the present invention is attached is a pressure discharge type container body that is filled with various fluids as described above, that is, the container body is filled with a pressing force applied thereto. It is a container body configured to discharge a fluid, and by attaching the check valve 1 to the mouth and neck portion 21, a discharge container having a check valve function can be obtained.

  As a preferable pressure discharge type container body 2 to which the check valve 1 of the present invention is attached, a tube-type container can be mentioned.

  The tube-type container has a structure in which a synthetic resin alone or a synthetic resin and aluminum or the like are laminated. By applying pressure such as crushing with a finger to the tube-type container, the flow that is the contents from the mouth The body can be discharged, and when the applied pressure is released, the inside of the tubular container becomes a negative pressure state due to the elastic restoring force of the tubular container, and the valve is closed.

  As mentioned above, although the non-return valve concerning this invention and the container body using the same were demonstrated based on the Example, this invention is not limited to the said Example, It can take another aspect within the scope of the present invention. .

  For example, the connecting rod 18 has the same-diameter rod-like configuration in the above embodiment, but the second valve body 13 side can be made smaller in diameter than the first valve body 11 side as shown in FIG. . According to such a configuration, as shown in FIG. 4, the flow path of the fluid in the second valve seat 14 portion can be widened, so that the discharge amount when the second valve body 13 is opened can be increased. .

  Further, as the elastic body 19, in the above embodiment, as shown in FIG. 5, the elastic body 19 extends from a middle portion of the connecting rod 18 in a direction intersecting (orthogonal) with the moving direction of the first valve body 11 and the second valve body 13. Although the two plate-shaped configurations formed are not limited to two, the number of the plate-shaped configurations may be a four-sheet configuration formed in four directions crossing the connecting rod 18 as shown in FIG. Alternatively, a three-sheet configuration or a configuration of five or more sheets may be used. Of course, in any case of the number of sheets, it should not prevent passage of the fluid in the check valve 1.

  Further, the elastic body 19 is not limited to the plate-like configuration of the above-described embodiment, and may have a rod-like configuration as shown in FIG. Note that the rod-shaped configuration is not limited to the four configuration in FIG. 7, and may be a two-configuration, a three-configuration, or five or more configurations.

  Further, the elastic body 19 has a structure formed integrally with the connecting rod 19 in the above embodiment, but the present invention is not limited to such a structure, and the structure formed integrally with the first valve body 11. It may be a structure formed integrally with both the connecting rod 19 and the first valve body 11. When the elastic body 19 is formed integrally with both the connecting rod 19 and the first valve body 11, the elastic body 19 is formed in a continuous shape with both the connecting rod 19 and the first valve body 11. Alternatively, a part of one end or the like of the elastic body 19 is formed integrally with a part of the connecting rod 19, and a part of the other end or the like of the elastic body 19 is a part of the first valve body 11. The integrated structure in the straddled state integrally formed may be sufficient.

  Further, in the above embodiment, the elastic body 19 is configured to hook both ends near the second valve body 16 side, but the present invention is not limited to this configuration, and the elastic body 19 is used for opening and closing the valve body. It is sufficient that the elastic force acts on the first valve main body 15, and other parts such as the first valve main body 15 side can be latched / engaged.

  Further, the first valve body 11, the second valve body 13, the connecting rod 18 and the elastic body 19 are not limited to the configuration formed by the integral molding of the above embodiment, and (1) the elastic body 19 is integrated with the connecting rod 18. (2) a configuration in which the elastic body 19 is formed integrally with the first valve body 11, and (3) the elastic body 19 is formed integrally with the connecting rod 18 and the first valve body 11. In the configuration (1), the first valve body 11 and the second valve body 13 can be configured separately, and in the configuration (2) The connecting rod 18 and the second valve body 13 can be configured separately, and in the configuration (3), only the second valve body 13 can be configured separately.

  Further, the first valve body 11 and the second valve body 13 are directly connected in the above embodiment, so that the first valve seat 12 is opened and closed by the first valve body 11 and the second valve seat 14 is formed by the second valve body 13. Although the configuration is such that the opening and closing are operated substantially simultaneously, the present invention is not limited to such a configuration. For example, as shown in FIG. 8, as a connecting rod 18, two configurations that are dynamically connected via a telescopic floating portion 18 </ b> A By doing so, the second valve body 13 can be configured to be freely connected to the first valve body 11. According to such a configuration, the opening of the second valve seat 14 by the second valve body 13 operates with a delay from the opening of the first valve seat 12 by the first valve body 11, and FIG. ), Even when a pressure is applied to the fluid so that only the first valve body 11 moves, the second valve body 13 is not yet opened by the configuration in which the valve is not yet opened. As shown in FIG. 8 (C), the first valve body 11 is capable of suppressing erroneous discharge when the fluid is pressurized, and for pressurization intended to perform discharge. When the second valve element 13 moves by moving further and the free allowance of the expansion / contraction free moving part 18A is eliminated, the second valve seat 14 is opened and the fluid is discharged. When the valve is closed, leakage of the fluid can be effectively prevented by closing the first valve body 11 and the second valve body 13.

  In addition, about the expansion / contraction floating part 18A, it is not limited to the structure shown in the Example of FIG. 8, What is necessary is just a structure which connects the 1st valve body 11 and the 2nd valve body 13 so that expansion / contraction movement is possible, and it is set as a bellows-like structure. It is also possible to adopt other configurations such as providing a link mechanism. In addition, in the case where the expansion / contraction floating portion 18A is provided, the elastic body 19 is disposed in the portion close to the first valve body 11 of the connecting rod 18 in the embodiment shown in FIG. It can also be disposed in a portion close to 13.

  Furthermore, as shown in FIG. 9, the elastic body 19 can also be made into a multistage structure. In the embodiment shown in FIG. 9, the elastic body 19 has a two-stage configuration, but it may be three or more stages. In addition, when the elastic body 19 is made into a multistage structure, the structure of each elastic body 19 and the structure of the connecting rod 18 can also adopt the other structure shown in FIGS.

  Furthermore, as shown in FIG. 10, the discharge pipe 3 may be disposed in the mouth-and-neck portion 21 of the container body 2 in the downstream portion from the second valve seat 14 of the check valve 1. According to such a configuration, the discharge shape of the fluid to be discharged can be defined. As the discharge shape of the discharge pipe 3, the discharge diameter of the fluid to be discharged is specified by making the discharge pipe 3 thick or thin, or the discharge form such as direct current discharge / diffusion discharge / injection discharge, etc. Can be mentioned.

  Further, as shown in FIG. 11, a metering unit 4 is provided that stores fluid in the mouth-neck part 21 of the container body 2 and downstream of the second valve seat 14 of the check valve 1 to measure the discharge amount. It can also be set as the structure to install. According to this configuration, it is possible to discharge a desired amount of fluid by discharging the fluid while confirming the measurement scale 41 of the measuring unit 4.

  Further, the structure of the check valve main body 17 is not limited to the above-described embodiment, and the first valve seat 12 facing the first valve body 11 is formed on the fluid inlet side, and the second valve is formed on the fluid outlet side. The second valve seat 14 facing the body 13 may be formed. For example, a bottom plate on which the first valve seat 12 is formed is joined to a lower portion of a cylindrical body or the like, and an upper portion of the cylindrical body or the like is joined. The structure which joins the upper surface board in which the 2nd valve seat 14 was formed in a thing, the composition which uses the cylindrical body which has a division joint line in the direction parallel to the discharge direction of a fluid, etc. can be mentioned. .

  Furthermore, in the said Example, although the diameter of the 1st valve body 11 which receives the pressure of a fluid is larger than the diameter of the 2nd valve body 13, the structure where the 2nd valve body 13 is larger may be sufficient. The two valve bodies may have the same diameter. Here, “diameter” refers to the diameter of the pressure receiving surface.

  Furthermore, fluid such as the surface of the first valve body 11 that receives the pressure of the fluid, the surface of the first valve seat 12, the lower surface or surface of the second valve seat 14, and the fluid contact surface of the second valve body 13. Protrusions and recesses that define the flow direction of the fluid are formed in the contact portion, and the flow of the fluid is spiral, or the discharge direction of the fluid is defined in one or more directions. It can also be configured.

DESCRIPTION OF SYMBOLS 1 Check valve 11 1st valve body 12 1st valve seat 13 2nd valve body 14 2nd valve seat 15 1st valve main-body part 16 2nd valve main-body part 17 Check valve main body 18 Connecting rod 18A Telescopic free-running part 19 Elasticity Body 2 Container 21 Mouth and neck 3 Discharge pipe 4 Measuring section 41 Measuring scale

Claims (13)

In a check valve for a fluid container of pressure discharge type,
It is a check valve that opens and closes the valve body facing the valve seat of the check valve body against the elasticity of the elastic body by the pressure of the fluid,
A first valve seat formed on the fluid inlet side and facing the first valve body; and a second valve seat formed on the fluid outlet side and facing the second valve body;
The second valve body is directly or indirectly connected to the first valve body via a connecting rod,
The elastic body is formed integrally with the connecting rod and / or the first valve body;
In addition, the first valve body, the second valve body, the connecting rod and the elastic body are made of synthetic resin, and the check valve body has an opening at one end and a closing portion at the other end. The first valve main body portion and the cylindrical second valve main body portion having one end as an opening and the other end as a closing portion are screwed and fitted in the direction in which the openings face each other. A cylindrical body that is closed at both ends in a state of being joined by a joining means such as adhesion and welding , and the first valve seat and the second valve seat are provided at the closed parts at both ends,
The check valve body is configured to be attachable to the mouth and neck of a container body filled with a fluid with the first valve seat side facing the inside of the container body. . The elastic body has a plate-like or rod-like configuration formed by extending from a middle portion of the connecting rod in a direction intersecting with the moving direction of the first valve body and the second valve body when the valve is opened and closed. The check valve according to claim 1. The first valve body is urged from the second valve seat side with respect to the first valve seat to close the valve, and moves away from the first valve seat when the fluid is pressurized. It is a configuration that opens,
The second valve body is urged from the fluid outlet side with respect to the second valve seat to close the valve, and moves away from the second valve seat when the fluid is pressurized. The valve is configured to open,
The check valve according to claim 1 or 2. The reverse according to any one of claims 1 to 3, wherein the check valve body has a liquid-tight and / or air-tight state when the first valve seat and the second valve seat are closed. Stop valve. The check valve according to any one of claims 1 to 4, wherein opening and closing of the first valve seat by the first valve body and opening and closing of the second valve seat by the second valve body are substantially simultaneous. The first valve body, the second valve body, the check valve according to claim 5, connecting rod and the elastic body is characterized by a structure in a state of being integrally molded. The second valve body is connected to the first valve body in a loose manner by providing a telescopic floating part in a part of the connecting rod, and the second valve seat is opened by the second valve body, The check valve according to any one of claims 1 to 4, wherein the check valve is configured to operate with delay from the opening of the first valve seat by the first valve body. The diameter of the said connecting rod located in the flow path of the 2nd valve seat part at the time of the said 2nd valve body open | release is a structure made into a diameter smaller than the diameter of the 1st valve body side part. The check valve according to any one of the above. Said second valve body is Yes to face in the closed state to the second valve seat in a state of being pressed from the first valve seat side with respect to the second valve seat of the second valve body portion, the second valve body portion The first valve body faces the first valve seat in a closed state in a state where the first valve body is coupled , and the check valve body has a unit configuration having one valve chamber. The check valve according to claim 1. A container body, wherein the check valve according to any one of claims 1 to 9 is used in a container neck. The container body according to claim 10, wherein the container body is a pressure discharge type container. The container body according to claim 10 or 11, wherein a discharge pipe is disposed in a portion of the mouth / neck portion of the container body downstream of the second valve seat of the check valve. The metering unit for collecting a fluid and measuring a discharge amount in a portion of the mouth and neck of the container body downstream of the second valve seat of the check valve is provided. The container body according to 10 or 11.

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