JP6338708B2 - Anti-clogging spray container - Google Patents

Description

  The present invention relates to a spray container, and in particular, to a spray container that is a pump type spray container and is less likely to cause nozzle clogging.

  Spray containers are often used as means for taking out the solution sealed in the container to the outside without removing the cap. Such spray containers include a pressure accumulation type and a pump type.

An accumulator spray container is a container in which a solution and compressed gas (air, non-combustible gas, etc.) are sealed together in a pressure-resistant container, and a valve is opened with a trigger, and the solution is ejected from the nozzle with the pressure of the compressed gas. It is. The pressure accumulation type spray container is generally made of a metal and is often called a spray can.

On the other hand, a pump-type spray container has a pump mechanism consisting of a cylinder, a piston, and a one-way valve near the cap of the container, and the piston is operated manually to suck up the container and discharge it from the nozzle. is there. Plastic (or glass) is generally used as the container material, and is often called a spray bottle.

A problem common to such spray containers is the problem of nozzle clogging. Conventionally, various means for preventing clogging of the spray nozzle have been proposed. For example, Patent Document 1 (Japanese Examined Patent Publication No. 53-1488) proposes a technique for preventing nozzle clogging by applying ultrasonic vibration to the nozzle and cavitation. In Patent Document 2 (2001-202741), in a tooth surface cleaning / washing device, powder-mixed air and water are simultaneously injected to clean the tooth surface, and then only air is injected to clog the nozzle. Techniques for preventing are disclosed.

Furthermore, Patent Document 3 (Table 2001-526583) is provided with a mechanism for preventing clogging by contacting the nozzle (cover) of the spray container with the nozzle (shroud). A technique for preventing nozzle clogging caused by drying of the solution remaining in the nozzle or the like is disclosed. However, these conventional techniques require significant modifications in equipment and structure, and cannot be easily applied to existing spray containers.

Japanese Patent Publication No.53-1488 JP 2001-202741 A JP-T-2001-526583

  In the accumulator spray container, since the nozzle back pressure for discharging the liquid from the nozzle is large, so-called spray spraying is often performed in which the nozzle tip diameter is reduced to increase the tip flow velocity and atomize the droplets.

  On the other hand, in the pump type spray container, the driving force for discharging the liquid from the nozzle is only the force for manually pressing the piston, so the nozzle back pressure is significantly smaller than that of the pressure accumulation type. Even in the case of a pump type spray container, when the viscosity of the liquid is small, it is possible to perform spray spraying with the nozzle tip diameter reduced to some extent.

  However, when a pump type spray container is used for a highly viscous liquid such as shampoo or rinse, it is impossible to perform spraying because the nozzle back pressure is small. Usually, a spray container is used only for the purpose of “taking out a predetermined amount of liquid out of the container without removing the cap of the container”. In this case, it is not necessary to reduce the nozzle diameter, and it is usual to use a discharge nozzle having a relatively large diameter.

  However, according to the knowledge of the present inventors, when a highly viscous liquid is used in a pump type spray container, nozzle clogging often becomes a problem even if the nozzle diameter is increased. For example, in the case of a suspension in which fine particles are suspended, fine particles adhere and grow near the nozzle tip, and nozzle clogging is likely to occur. Also, even if it does not contain fine particles, a highly viscous liquid may remain in the nozzle after being discharged from the nozzle, and this residual liquid may dry and solidify over time, causing nozzle clogging. Many.

  No suitable preventive measure has been obtained in the past for nozzle clogging of such a pump type spray container. Of the conventional nozzle clogging prevention methods described above, the method of Patent Document 2 requires a high-pressure air source for air purge, and is difficult to apply to a pump-type spray container.

  The method of Patent Document 3 is also applicable to a pump-type spray container, but it is assumed that a cover is used in addition to a conventional container, which not only increases the cost of the container but also increases the liquid in the container. When discharging the cap, it is necessary to attach and detach the cap.

  Then, this invention makes it a subject to provide the means which can prevent nozzle clogging, without increasing a container cost and the effort of operation, when using a highly viscous solution with a pump type spray container.

  The present inventors have conceived that, in a conventional spray container, nozzle clogging can be prevented even when a highly viscous liquid is used by adding an operation of circulating only air in the nozzle between discharges of the liquid. The present invention has been completed.

The first of the clogging prevention spray containers of the present invention based on this idea is arranged in a concentric manner inside a container main body for storing the solution, a cover fitted or screwed onto the upper part of the container main body, and the inside of the cover. A cylinder, a piston that slides inside the cylinder, a solution supply pipe that is connected to an opening provided at a predetermined position of the cylinder and supplies the solution, and a discharge channel that discharges the solution in the cylinder And a one-way valve disposed in the opening, and a pump-type spray container that discharges the solution from a discharge nozzle connected to the discharge flow path by the vertical movement of the piston.
An air supply pipe connected to the solution supply pipe before connecting to the one-way valve;
The clogging prevention spray container is provided with an opening / closing mechanism for opening and closing each flow path of the solution supply pipe and the air supply pipe in conjunction with the vertical movement of the piston.

The first of the clogging prevention spray containers of the present invention based on this idea is arranged in a concentric manner inside a container main body for storing the solution, a cover fitted or screwed onto the upper part of the container main body, and the inside of the cover. A cylinder, a piston that slides inside the cylinder, a solution supply pipe that is connected to an opening provided at a predetermined position of the cylinder and supplies the solution, and a discharge channel that discharges the solution in the cylinder And a one-way valve disposed in the opening, and a pump-type spray container that discharges the solution from a discharge nozzle connected to the discharge flow path by the vertical movement of the piston.
An air introduction pipe connected to the solution supply pipe before connecting to the one-way valve ;
An anti-clogging spray container comprising an opening / closing mechanism for opening and closing each flow path of the solution supply pipe and the air introduction pipe in conjunction with the vertical movement of the piston.

In the clogging prevention spray container according to the first aspect of the present invention, all or a predetermined portion of the solution supply pipe and the air introduction pipe are formed of a flexible elastic material, and the opening / closing mechanism is interlocked with the vertical movement of the piston. A cam plate having irregularities on its outer periphery, and the flow path is closed when the outer peripheral convex portion of the cam plate comes into contact with the solution supply pipe and / or the air introduction pipe , When the outer edge recess of the cam plate is brought into contact with the solution supply pipe and / or the air introduction pipe , it is desirable that the flow path be opened by the elasticity of these pipes.

In the above-mentioned clogging prevention spray container, the opening / closing means is constituted by two cam plates, and the outer peripheral irregularities of the two cam plates are either one of the solution supply pipe or the air introduction pipe. It is desirable that the other is closed when in the open state.

Further, the clogging prevention spray container is configured such that the cam plate is rotationally driven in one direction by the vertical movement of the piston by a gear mechanism and a ratchet mechanism, and the piston has N strokes. Correspondingly, the outer periphery of the two cam plates is X times (X is an integer of X <N) so that the solution supply pipe is opened and the air introduction pipe is opened N-X times. It is preferable that unevenness is formed on the surface.

The second anti-clogging spray container of the present invention includes a container body for containing a solution, and a cover that fits or screwed into the upper portion of the body, slides inside of the cover, are pressed from the upper vertical A moving cap,
A first cylinder concentrically arranged inside the cover and storing a solution; a second cylinder coaxially connected to a lower end of the first cylinder and storing air;
A first piston that slides inside the first cylinder, is pressed by the cap and descends, and rises by a restoring force of a spring;
A second piston that slides inside the second cylinder, is pressed and lowered by the lower end of the first piston, and rises by a restoring force of a spring;
A solution supply pipe connected to a first opening provided in a side wall of the first cylinder and supplying the solution into the first cylinder;
An air introduction pipe connected to a second opening provided at the bottom of the second cylinder and introducing air into the second cylinder;
A discharge passage through which the first piston and the second piston penetrate, and the solution or the air is discharged;
A discharge nozzle connected to the discharge flow path and discharging the solution or the air from the top of the cap;
The first one-way valve provided in the first opening, the second one-way valve provided in the second opening, and the discharge passages of the first piston and the second piston And a third one-way valve provided in the clogging prevention spray container.

  According to the present invention, it is possible to prevent clogging of a nozzle even when used in a highly viscous solution such as shampoo or rinse by adding a simple modification to a conventional pump type spray container. As a result, it has become possible to provide a pump-type spray container that is unlikely to cause nozzle clogging without significantly increasing the container cost of the pump-type spray container and without increasing the labor of operation.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings of the examples. 1 to 3 are views showing the structure of a spray container which is an embodiment of the first invention of the present application (hereinafter referred to as the first embodiment), FIG. 1 (a) is an external view, and FIG. 1 (b) is an axis. FIG. 2 is a perspective view of the vertical section, and FIG. 3 is an exploded sectional view of each part of the container. The external appearance of this container is composed of a container body 1 that contains the solution and a cover 2 that covers the upper part thereof. As shown in FIG. 3, the cover 2 is divided into two parts in the vertical direction, and includes a lower center cover 3 and an upper cover 4. A pump mechanism 10 is disposed inside the upper cover 4, and a flow path switching mechanism 20 is disposed inside the center cover 3.

  Hereinafter, the shape and joining structure of each part of the container of the first embodiment will be described. As seen in FIG. 3, the container body 1 has a cylindrical shape, and a collar 5 having a slightly smaller diameter is formed on the upper surface. The center cover 3 has a cylindrical shape with a diameter larger than that of the container body 1 in order to accommodate the flow path switching mechanism 20 therein. A sleeve 6 is formed on the lower surface of the center cover 3, and the sleeve 6 is fitted to the outer surface of the collar 5. The center cover 3 is fixed to the upper part of the container body 1.

  Further, a collar 7 having a slightly smaller diameter is formed on the upper surface of the center cover 3. The upper cover 4 has a shape formed by combining several cylinders whose diameters become smaller toward the upper side, and the lower end cylinder 8 is sized to fit the outer surface of the collar 7. Fixed to the upper side. Furthermore, a cap 11 for pressing a piston, which will be described later, is provided at the upper end of the upper cover 4.

  In the present invention, the shape or the like of the cover 2 only needs to satisfy the requirement that the pump mechanism 10 and the flow path switching mechanism 20 can be accommodated therein, and the shape of the container body, the shape of the cover, The necessity of division and the joining method of the main body and the cover are not limited to those of the present embodiment.

  Next, the pump mechanism of the first embodiment will be described. FIG. 4 is an explanatory diagram of the pump mechanism in the first embodiment. FIG. 4A shows a state where the piston is raised, and FIG. 4B shows a state where the piston is lowered. The pump mechanism 10 includes a cylinder 12 arranged in a vertically long and coaxial shape (center axis of the cover) inside the upper cover 4, a piston 13 that slides up and down in the cylinder 12, and an opening at the lower end of the cylinder 12. A solution supply pipe 14 having an opening on the lower surface of the piston 13, a flow passage provided therein, a discharge nozzle 15 for discharging the solution from the vicinity of the upper end of the upper cover 4, and the solution supply pipe 14 1-way valve (check valve) 16 disposed in the vicinity of the outlet (bottom surface of the cylinder 12).

  In FIG. 4A, since the cap 11 is not pressed by human power, the restoring force of the spring 17 raises the piston 13 so that the inside of the cylinder 12 becomes negative pressure. Therefore, the one-way valve 16 is pushed up, and the solution in the container body 1 passes through the solution supply pipe 14 and is stored in the cylinder 12 (represents a hatched partial solution in the figure).

Next, when the cap 11 is pushed down by human power, as shown in FIG. 4B, the spring 17 is compressed by the spring pressing plate 18 and the piston 13 is lowered. Since the inside of the cylinder 12 is in a pressurized state, the one-way valve 16 is pushed down to be in a closed state. The solution in the cylinder 12 passes through a discharge channel 19 having an opening at the lower end of the cylinder 12 and is discharged out of the container from the discharge nozzle 15.
Such a pump mechanism is the same as that widely used in existing spray containers, and the present invention does not provide new contents regarding the pump mechanism.

The points of the first invention are in the following points.
(1) An air introduction pipe is connected to the solution supply pipe, and a flow path switching mechanism for opening and closing the flow path between the solution supply pipe and the air introduction pipe is provided, so that switching between solution / air can be performed for the fluid passing through the discharge nozzle. What I did. As a result, an opportunity to allow only air to pass through the discharge nozzle is created, and nozzle clogging caused by residual solution in the nozzle can be reduced.

(2) To open and close the channel, use a flexible elastic material (for example, rubber tube, soft plastic tube, etc.) at a predetermined part of the channel, and sandwich the tube from the outside (by pinch action). The flow path is opened due to the elasticity of the tube when it is closed and there is no pinch action. As a result, the flow path can be opened and closed without using complicated and large-scale means such as a metal valve or a glass cock.

(3) As a means for obtaining a pinch action, a cam plate attached to the rotating shaft is used so that the rotation of the rotating shaft is interlocked with the vertical movement of the piston of the pump mechanism. This makes it possible to switch the flow path by an external operation.

  Next, the flow path switching mechanism of the first embodiment will be described. FIG. 5 is an explanatory diagram of the flow path switching mechanism in the present embodiment. FIG. 5A shows a case where the solution supply pipe 14 is closed, and FIG. 4B shows a case where the air introduction pipe is closed. FIG. 5C is a horizontal sectional view, and FIG. 5D is a perspective view seen from below.

  The flow path switching mechanism 20 includes a branch block 21 provided immediately below the one-way valve 16 at the lower end of the cylinder 12 (immediately upstream), a solution supply pipe 14 and an air introduction pipe 22 connected to the branch block 21, and a solution. The first post 23 and the first cam plate 24 that are in pressure contact with the flow path of the supply pipe 14, the second post 25 and the second cam plate 26 that are in pressure contact with the flow path of the air introduction pipe 22, the first cam plate 24 and the first cam plate 24. 2 comprises a gear 27 for rotating the cam plate 26, a shaft 28, and the like.

  In the state of FIG. 5A, the convex portion on the outer periphery of the first cam plate 24 is in contact with the solution supply pipe 14, and the concave portion of the second cam plate 26 is in contact with the air introduction tube 23. For this reason, the solution supply pipe 14 is closed and the air introduction pipe 23 is open. On the other hand, in the state of FIG. 5B, the concave portion on the outer periphery of the first cam plate 24 is in contact with the solution supply pipe 14, and the convex portion of the second cam plate 26 is in contact with the air introduction pipe 23. For this reason, the solution supply pipe 14 is in an open state, and the air introduction pipe 23 is in a closed state.

  Thus, the point of the present invention is that the flow path can be switched only by rotating the shaft by appropriately forming the irregularities on the outer periphery of the two cam plates attached to the same shaft. Next, a gear drive mechanism for rotating the cam plate will be described.

  FIG. 6 is an explanatory diagram of a gear drive mechanism in the first embodiment. In this figure, the gear 27 is driven by a rack 30. That is, a linear saw-tooth portion 31 is formed on one side surface of the rack 30, and the tooth pitch of the saw-tooth portion 31 matches the tooth pitch of the gear 27 and is configured to mesh with each other. The rack 30 is connected to the spring pressing plate 18 in the cap 11 via a rod 32, and the rack 30 also moves up and down in conjunction with the stroke of the cap 11.

  In conjunction with the vertical movement of the rack 30, the gear 27 also rotates back and forth within a predetermined angle range (the angle range of front and back rotation varies depending on the diameter of the gear 27). In the present invention, it is desirable that the cam plates 24 and 26 (shaft 28) rotate in one direction rather than forward and backward. Therefore, in this embodiment, a ratchet mechanism (not shown) is provided between the gear 27 and the cam plates 24 and 26 so that the front-rear rotation of the gear 27 is converted into one-way rotation of the cam plates 24 and 26. It is configured.

  With this configuration, the rotational positions of the cam plates 24 and 26 are determined in response to a plurality of strokes of the cap 11, and the unevenness of the outer periphery of both cam plates causes the solution supply pipe 14 and the air supply pipe 22 to move. The switching of the flow path is controlled. In this system, by appropriately forming the irregularities on the outer circumferences of both cam plates, the solution supply pipe 14 conducts to the cylinder X times (X <N is an integer) for N strokes of the cap 11, The air supply pipe 22 can be configured to conduct to the cylinder for the remaining (N−X) times.

  Therefore, according to the flow path switching mechanism of the present invention, it is possible to arbitrarily change the ratio of the number of times of solution conduction to the nozzle: number of times of air conduction by exchanging the cam plates 24 and 26, which is the present invention. It has become a big feature.

  Next, the spray container of the second invention of the present application will be described. FIG. 7 is a view showing the structure of a spray container which is an embodiment of the second invention of the present application (hereinafter referred to as the second embodiment), FIG. 7 (a) is an external view, and FIG. 7 (b) is FIG. It is sectional drawing of the AA cross section of).

  The spray container of the second embodiment has a second pump mechanism that sucks and discharges only air in addition to a normal pump mechanism that sucks and discharges the solution, and these two pump mechanisms are integrally incorporated. It is characterized by having a structure (in this specification, this is referred to as a “two-stage pump mechanism”).

  The external appearance of the spray container is as follows: a container body 1 for storing a solution; a cover 2 fitted to the upper part; a cap 11 slidably inserted into an inner surface of a collar 7 provided on the upper part of the cover 2; As shown in FIG. 7B, the two-stage pump mechanism 100 is disposed inside the cover 2.

  FIG. 8 is a sectional view showing the internal structure of the spray container of the second embodiment. Hereinafter, the two-stage pump mechanism will be described with reference to FIG. As can be seen in FIG. 8, a two-stage pump mechanism 100 is disposed inside the cover 2. The two-stage pump mechanism 100 includes a first cylinder 101, a second cylinder +102, a first piston 103, a second piston 104, and the like.

  The first cylinder 101 is arranged inside the cover 2 in a vertically long and concentric shape (so that the center of the circle of the cover and the circle of the first cylinder substantially coincides with each other in the cross-sectional view), and sucks the solution into the inside. And save. The second cylinder 102 is connected coaxially to the lower end of the first cylinder 101 (so that the center axis of the second cylinder coincides with the center axis of the first cylinder), and sucks and stores air therein.

  There is no partition plate between the first cylinder 101 and the second cylinder 102, both spaces communicate with each other via a one-way valve 114b, and the upper end of the second piston 104 serves as the bottom plate of the first cylinder 101. Plays a function.

  When the first piston 103 slides inside the first cylinder 101 and presses the cap 11 by human power, the first piston 103 is pressed and lowered. The first piston 103 is urged by the first spring 105 (coiled spring) and rises by its restoring force when the pressing force of the cap 11 is lost.

  The second piston 104 slides inside the second cylinder 102, and after the first piston 103 descends and its lower end contacts the upper end of the second piston 104, it is pressed by the first piston 103 and descends. The second piston 104 is urged by the second spring 106, and is lifted by the restoring force of the second spring 106 when the first piston 103 is lifted and the pressing force disappears.

  However, the diameter of the second cylinder 102 is slightly larger than that of the first cylinder 101, and a step 107 is formed between them. When the upper end of the second piston 104 comes into contact with the step 107, the ascent of the second piston 104 stops.

An air introduction pipe 108 is provided at the opening of the bottom surface of the second cylinder 102, and a one-way valve 112 is attached in the vicinity of the outlet. Accordingly, when the second piston 104 is raised and the inside of the second cylinder 102 becomes negative pressure, the one-way valve 112 is opened, and air is introduced into the second cylinder 102 from the air introduction pipe 108. Note that a space (not shown) that communicates with the outside is provided in the space of the air inlet port of the air introduction pipe 108 (the air space of the container body 1).

  Further, the first cylinder 101 is provided with a solution supply pipe 109 having an opening on its side surface, and a one-way valve 113 is provided near the outlet thereof. As a result, when the first piston 103 is raised and the inside of the first cylinder 101 becomes negative pressure, the one-way valve 113 is opened, and the solution is supplied from the solution supply pipe 109 into the first cylinder 101.

  Furthermore, a through hole having an opening at the center of the bottom surface is formed inside each of the first piston 103 and the second piston 104, and both communicate with each other to form a solution or air discharge passage 110. ing. The upper end of the discharge channel 110 is connected to a discharge nozzle 111 having an opening on the side surface of the cap 11 to discharge the solution or air out of the container.

  One-way valves 114 a and 114 b are provided in the vicinity of the bottom surfaces of the first piston 103 and the second piston 104 in the discharge channel 110, respectively. When the second cylinder 102 is in a pressurized state, the one-way valves 114a and 114b are both pushed upward to the open state, and the air stored in the second cylinder 102 is discharged from the discharge nozzle 111 to the outside of the container. The

  When the first cylinder 101 is in a pressurized state, the one-way valve 114a is pushed upward to be in an open state, and the one-way valve 114b is pushed down to be in a closed state, so that the first cylinder 101 is stored in the first cylinder 101. The solution is discharged from the discharge nozzle 111 through the discharge flow path 110 to the outside of the container.

FIG. 9 is an explanatory diagram of the operation of the pump mechanism (two-stage pump mechanism) of the second embodiment. 9A shows a state where the cap is raised to the upper limit, FIG. 9B shows a state where the cap is lowered halfway, FIG. 9C shows a state where the cap is lowered to the lower limit, and FIG. It shows a state where it has been raised halfway.

  FIG. 9A shows a state where the cap is not pressed (initial state). The first piston 103 is lifted by the restoring force of the first spring 105, and the solution is sucked and stored in the first cylinder 101. Yes. At the same time, the second piston 104 is raised by the restoring force of the second spring 106 until it hits the step 107, and air is sucked and stored in the second cylinder 102.

  When the cap 11 is pressed from this state, first, the first piston 103 is lowered, and the solution in the first cylinder 101 is discharged from the discharge nozzle 111 to the outside of the container. FIG. 9B corresponds to a state in which the solution has been discharged. When the cap 11 is continuously pressed, the lower end of the first piston 103 presses the second piston 104, and the air in the second cylinder 102 is discharged from the discharge nozzle 111 to the outside of the container. FIG. 9C corresponds to a state in which the air has been discharged.

  FIG.9 (c) shows the state which pushed the cap to the minimum. When the cap is released from this state, the restoring force of the second spring 106 first raises the second piston 104 until it abuts against the step 107, and air is sucked and stored in the second cylinder 102. Further, the cap 11 and therefore the first piston 103 is lifted by the restoring force of the first spring 105, and the solution is sucked and stored in the first cylinder 101 to return to the initial state (the state shown in FIG. 9A). .

  As described above, when the pump mechanism is used, a series of operations of (solution discharge)-(air discharge)-(air suction)-(solution suction) is sequentially performed in one stroke of raising and lowering the cap. It will be. Therefore, after discharging the solution from the discharge nozzle, it is possible to discharge air and reliably purge the residual solution in the discharge nozzle. The point of the spray container of the second invention of the present application is that it solves the problem of “preventing nozzle clogging caused by drying and solidification of the residual solution in the nozzle” by the purging action of air.

It is the external view and vertical sectional drawing of the spray container which are the 1st Example of this invention. It is a perspective view of the vertical cross section of the spray container of a 1st Example. It is an exploded sectional view of the spray container of the first example. It is explanatory drawing of the pump mechanism in a 1st Example. It is explanatory drawing of the flow-path switching mechanism in a 1st Example. It is explanatory drawing of the drive mechanism of the gear in a 1st Example. It is the external view of the spray container which is a 2nd Example of this invention, and a vertical sectional view. It is sectional drawing which shows the internal structure of the spray container of a 2nd Example. It is explanatory drawing of operation | movement of the pump mechanism in 2nd Example.

1: Container body 2: Cover 3: Center cover 4: Upper cover 5: Collar 6: Sleeve 7: Collar 8: Bottom cylinder 10: Pump mechanism 11: Cap 12: Cylinder 13: Piston 14: Solution supply pipe 15: Discharge nozzle 16: one-way valve 17: spring 18: spring retainer plate 19: discharge flow path 20: flow path switching mechanism 21: branch block 22: air introduction pipe 23: first post 24: first cam plate 25: second post 26 : Second cam plate 27: gear 28: shaft 30: rack 31: sawtooth portion 32: rod 100: two-stage pump mechanism 101: first cylinder 102: second cylinder 103: first piston 104: second piston 105: first One spring 106: Second spring 107: Step 108: Air introduction pipe 109: Solution supply pipe 110: Discharge flow path 111: Discharge nozzle 112: One-way valve (second one Mukoben)
113: One-way valve (first one-way valve)
114a, 114b: third one-way valve

Claims (5)

A container main body for containing the solution; a cover fitted or screwed into an upper portion of the container main body; a cylinder disposed concentrically within the cover; a piston sliding inside the cylinder; and the cylinder A solution supply pipe connected to an opening provided at a predetermined position to supply the solution, a discharge channel for discharging the solution in the cylinder, and a one-way valve disposed in the opening; In the pump type spray container that discharges the solution from the discharge nozzle connected to the discharge flow path by the vertical movement of the piston,
An air introduction pipe connected to the solution supply pipe before connecting to the one-way valve ;
An anti-clogging spray container, comprising: an opening / closing mechanism capable of opening and closing each flow path of the solution supply pipe and the air introduction pipe in conjunction with the vertical movement of the piston. Predetermined portions of the solution supply pipe and the air introduction pipe are made of an elastic material, and the opening / closing mechanism includes a cam plate having irregularities on the outer periphery that rotates in conjunction with the vertical movement of the piston,
When the convex part is in contact with the solution supply pipe and / or the air introduction pipe , the flow path is closed, and the concave part is in contact with the solution supply pipe and / or the air introduction pipe . The clogging prevention spray container according to claim 1, wherein the flow path is sometimes opened. The opening / closing mechanism is composed of two cam plates having irregularities on the outer periphery, and when the convex of one cam plate of the two cam plates is in contact with the solution supply pipe and is in a closed state, The clogging-preventing spray container according to claim 2, wherein a recess of another cam plate is configured to be in contact with the air introduction pipe to be opened. The cam plate is rotationally driven in one direction by the vertical movement of the piston by a gear mechanism and a ratchet mechanism, and X times (X is X <N) corresponding to N strokes of the piston. An irregularity is formed on the outer periphery of the two cam plates so that the solution supply pipe is opened and the air introduction pipe is opened N-X times. Item 4. A clogging prevention spray container according to item 3. A container body for containing a solution, and a cover that fits or screwed into the upper portion of the container body, slides inside of the cover, a cap moves up and down by being pressed from above,
A first cylinder concentrically arranged inside the cover and storing a solution; a second cylinder coaxially connected to a lower end of the first cylinder and storing air;
A first piston that slides inside the first cylinder, is pressed by the cap and descends, and rises by a restoring force of a spring;
A second piston that slides inside the second cylinder, is pressed and lowered by the lower end of the first piston, and rises by a restoring force of a spring;
A solution supply pipe connected to a first opening provided in a side wall of the first cylinder and supplying the solution into the first cylinder;
An air introduction pipe connected to a second opening provided at the bottom of the second cylinder and introducing air into the second cylinder;
A discharge passage through which the first piston and the second piston penetrate, and the solution or the air is discharged;
A discharge nozzle connected to the discharge flow path and discharging the solution or the air from the top of the cap;
The first one-way valve provided in the first opening, the second one-way valve provided in the second opening, and the discharge passages of the first piston and the second piston And a third one-way valve provided in the clogging prevention spray container.