JP2000117163A - Pressure type sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the contact of the spring having to use a metal material of a check valve mechanism and the liquid in a container main body in a pressure type sprayer made of a synthetic resin. SOLUTION: A flapper valve disc 40 made of an elastic material closing the communication hole 39 of a housing part 31 housing a check valve disc 34 and a spring 38 and also permitting the flow of air at a time of pressure pump action is provided. By this constitution, the liquid in a container main body is prevented from penetrating into the housing part 31 and the contact of the liquid and the spring 38 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressurized sprayer which pressurizes the inside of a container body and sprays the liquid therein by the pressure. More specifically, the present invention relates to a pressurized sprayer that can prevent contact between acidic water and a spring made of a metal material when a liquid such as acidic water is contained in a container body.

[0002]

2. Description of the Related Art Conventionally, there has been a sprayer made of an all-synthetic resin in which components such as a container body, a piston cylinder mechanism, an on-off valve mechanism, and a spray nozzle mechanism are all formed of a synthetic resin material. Such a sprayer made of all synthetic resin is light in weight and has features such as high corrosion resistance since it is entirely formed of a synthetic resin material.

Incidentally, such a sprayer has a so-called pistol type in which a liquid in a container body is directly pressurized by a pump mechanism operated by operating a lever with a finger or the like and supplied to a spray nozzle, There is a so-called pressurized type in which air is press-fitted into the inside, and the liquid in the container body is supplied to the spray nozzle by the pressure of the air.

The above-mentioned pistol type has the advantages that the structure is simple and that the container body does not require pressure resistance. However, it is necessary to operate the lever for each spraying. It is troublesome and has drawbacks such as not being able to spray continuously. In addition, the above-mentioned pressurized type can spray only by opening and closing the on-off valve once the inside of the container body is pressurized once, which is easy to operate and sprays for an arbitrary time. There are advantages such as being able to continue.

However, in such a pressurized sprayer,
At least two valve mechanisms, a check valve mechanism of the pressurizing pump mechanism and an on-off valve mechanism, are required. In such a valve mechanism,
A valve body and a spring that presses and biases the valve body against the valve port are required. This valve body can be formed of a synthetic resin material. However, it is difficult to secure the performance and reliability of the spring with a material other than a metal material, and a metal material must be used.

[0006] For example, when treating atopic dermatitis or the like, the skin is washed by spraying acidic water. Since this acidic water is highly corrosive, a sprayer made of all synthetic resin as described above is preferable as a sprayer for spraying this acidic water. However, as described above, in the pressurized sprayer, at least the spring must be formed of a metal material. For this reason, even if stainless steel or the like is used as the material of the spring, corrosion may occur when the spring comes in contact with acidic water.

[0007] In addition to the above acidic water, there are also cases where a liquid such as various reagents which is corrosive to metals and which dislikes elution of metal ions is sprayed. The contact between the liquid and the metal spring is not preferred.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and in a pressurized sprayer made of a synthetic resin, a spring and a liquid of a valve mechanism in which a metal material must be used. The present invention provides a pressurized sprayer in which contact of the pressurized type is prevented.

[0009]

According to a first aspect of the present invention, in a pressurized sprayer, a check valve mechanism of a pressurizing pump mechanism includes a check valve body made of a synthetic resin, and the check valve. A spring made of a metal material for biasing the mechanism, and a shielding member for preventing the spring from contacting the liquid in the container body is provided. The valve includes a synthetic resin on-off valve for opening and closing a liquid passage through which liquid in the main body flows, and a spring made of a metal material for urging the on-off valve. A shielding member for preventing contact with a liquid is provided.

Therefore, it is possible to prevent the liquid in the container main body and the liquid passage from coming into contact with the spring of the valve mechanism, and it is possible to surely prevent corrosion and elution of metal ions.

According to a second aspect of the present invention, the check valve mechanism of the pressurizing pump mechanism includes a housing.
One end of the housing communicates with the piston cylinder mechanism, and the other end has a communication hole that opens into the container body. The check valve and the spring are formed in the housing. The shielding member is a flapper valve body made of an elastic material that is provided in a portion of the communication hole and that allows only the flow from the piston cylinder mechanism side to the inside of the container body. Is what you do.

Therefore, during the pumping operation, air opens the flapper valve body and is pressed into the container body. However, when the pumping operation is not performed, the flapper valve body communicates. Since the hole is closed, the liquid in the container body does not enter the housing portion, and the liquid is reliably prevented from contacting the spring. Further, this is one in which a flapper valve is provided in the communication hole of the housing portion, and the structure is simple.

According to a third aspect of the present invention, the opening / closing valve mechanism has a housing portion, and an end of the housing portion has a valve port communicating with the spray nozzle mechanism and the container. The supply side passage communicating with the main body is open,
The opening / closing valve body and the spring are housed in the housing portion. The shielding member includes a portion where the valve port and the supply-side passage are opened in the housing, and a housing for the spring. And a partition member made of an elastic material for partitioning the portion.

Therefore, the partition member prevents the liquid flowing from the supply passage to the valve port from flowing toward the housing portion of the spring, and can reliably prevent the liquid from contacting the spring.

According to a fourth aspect of the present invention, the partition member is a boot member formed of an elastic material and having a cylindrical portion surrounding the outer periphery of the spring. is there. Therefore, the liquid can be reliably prevented from contacting the spring,
There is no hindrance to the expansion and contraction of the spring and the movement of the on-off valve body.

The present invention according to claim 5 is characterized in that the partition member is a diaphragm member formed of an elastic material and provided so as to cross the inside of the housing. Therefore, the liquid can be reliably prevented from contacting the spring, and the expansion and contraction of the spring and the movement of the on-off valve body are not hindered.

According to a sixth aspect of the present invention, the shielding member is a coating film made of a flexible material adhered to the surface of the spring. is there. Therefore, the coating film surely prevents the liquid from coming into contact with the metal material of the spring, and the structure can be simplified and reduced in size because other shielding members are not required.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show a first embodiment of the present invention, which is a small pressurized sprayer.

Reference numeral 1 in the figure denotes a container body of the sprayer.
The container main body 1 is formed by, for example, blow molding of a synthetic resin, is formed to be relatively thick, has pressure resistance, and can pressurize the inside. The sprayer is entirely made of a synthetic resin material, and all parts other than parts in which the type of material is described in the following description are all made of a synthetic resin material.

A lid 2 is attached to an upper portion of the container body 1. At the lower part of the lid 2, a female thread portion having an internal thread formed on the inner peripheral surface is formed, and is screwed to the vinegar thread portion 5 formed at the neck of the container body 1.
An O-ring 9 seals between the lid 2 and the neck of the container body 1. A ring-shaped supply-side ring passage 7 and a ring-shaped discharge-side ring passage 8 formed concentrically with the supply-side ring passage 7 are formed in the lid 2.

The lid 2 is provided with a spray nozzle mechanism 10 projecting therefrom. The spray nozzle mechanism 10
On the opposite side, a handle 11 is integrally protruded. Further, the lid 2 incorporates an on-off valve mechanism 13. A lever 14 is provided above the handle 11 so as to be rotatable by a shaft 15. By turning the lever 14 with a finger, the opening and closing valve mechanism 13 is opened and closed. It is configured to be.

A liquid supply pipe 12 projects downward from the lower surface of the lid 2 into the container body 1, and the lower end of the liquid supply pipe 12 is opened near the bottom surface of the container body 1. are doing. The upper end of the liquid supply pipe 12 communicates with the supply-side ring passage 7. Further, the above-mentioned on-off valve mechanism 1
3 is arranged between the supply-side ring passage 7 and the discharge-side ring passage 8, and is configured to open and close the flow between them. In addition, the above-mentioned discharge side ring passage 8
Is connected to the spray nozzle mechanism 10 through a discharge side passage 16.

Therefore, the liquid contained in the container body 1 is sprayed through the liquid supply pipe 12, the supply-side ring passage 7, the on-off valve mechanism 13, the discharge-side ring passage 8, and the discharge-side passage 16. It is supplied to the mechanism 10 and sprayed. A series of liquid passages through which the liquid in the container body 1 flows is formed by the above-described components.

The pressurizing pump mechanism 3 has a thread portion 6 formed on the outer periphery thereof, which is screwed through the center of the lid 2 and a lower end of which is screwed to the container body 1. Near the bottom. The space between the pressure pump mechanism 3 and the lid 2 is sealed by an O-ring 17. A knob 18 is formed on the upper part of the pressurizing pump mechanism 3, and the pressurizing pump mechanism 3 can be rotated by the knob 18 to be detachably attached to the lid 2. Then, with the pressure pump mechanism 3 removed, the lid 2
The liquid can be supplied into the container bay body 1 from the hole at the center of the container.

The pressurizing pump mechanism 3 includes a piston cylinder mechanism 20 and a check valve mechanism 30 provided at the tip of the piston cylinder mechanism. The piston cylinder mechanism 20 includes a cylinder 21
And a piston 22.
The second piston rod 23 projects from the upper end, and a handle 26 is provided at the tip. Then, by gripping the handle 26 and reciprocating the piston 22 up and down, the atmosphere is pressed into the container body 1 via the check valve mechanism 30. At the upper and lower ends of the piston rod 23, buffer springs 24 and 25 made of a metal material such as stainless steel are provided. Is configured to buffer the collision of the cylinder 21.

Next, the structure of the check valve mechanism 30 will be described with reference to FIG.
This will be described with reference to FIG. The check valve mechanism 30 includes a housing 31. The housing 31 has a cylindrical shape.
The bottom wall 21a protrudes integrally from the bottom wall 21a, and its lower end is open downward.

A through hole 32 is formed in the center of the bottom wall 21a of the above-mentioned cylinder, and a bush-shaped valve seat member 33 made of an elastic material such as synthetic rubber is fitted therein. Further, a check valve body 34 is inserted into the housing portion 31 so as to be vertically urged, and the check valve body 34 is seated on a lower surface of the valve seat member 33 from below, and The check valve is configured to allow only the flow of air from inside the cylinder 21 into the container body 1.

A cap member 35 is screwed on the lower end of the housing 31. The bottom surface of the cap member 35 has a cylindrical guide portion 3 facing upward.
6, the valve shaft 37 of the check valve body 34 is slidably guided in the guide portion 36. Further, the bottom surface of the cap member 35 and the check valve body 34
A compression coil spring 38 made of a metal material such as stainless steel is interposed therebetween, and urges the check valve body 34 upward to be seated on the valve seat member 33. Also,
The spring 38 is guided on the outer circumference of the guide portion 36.

A plurality of communication holes 39 are formed in the periphery of the bottom surface of the cap member 35, and the inside of the housing 31 and the container body 1 are formed through these communication holes 39.
The inside is communicated with. A mounting hole 41 is formed in the center of the bottom surface of the cap member 35.

A flapper valve body 40 is attached to the bottom surface of the cap member 35. The flapper valve body 40 is formed of an elastic material such as a synthetic rubber material, has a curved disk-shaped head 43, and has a mounting projection 42 integrally formed at the center thereof. . The mounting projection 42 is fitted and held in the mounting hole 41, and the head 43 of the flapper valve body 40 elastically adheres to the bottom surface of the cap member 35. Is closed.

Therefore, when air is press-fitted into the container body 1 by the above-described pressurizing pump mechanism 3, the head 43 is elastically deformed downward by the pressure of the air, so that the cap member is closed. A gap is formed between the bottom and the bottom of 35, and air passes through this gap. When the air is not injected, the flapper valve 4
The head 43 of 0 is in close contact with the bottom surface of the cap member 35 and closes the communication hole 39 to prevent the liquid such as acidic water contained in the container body 1 from entering the housing 31. This liquid is applied to the spring 3 in the housing 31.
8 serves as a shielding member for preventing contact with the contact member 8.

FIG. 3 shows the structure of the on-off valve mechanism 13.
This will be described with reference to FIG. A housing part 50 is formed in a part of the lid 2. Further, a valve port 51 is opened in the inner part of the housing portion 50, and the valve port 41 communicates with the discharge side ring passage 8. A supply-side passage 52 is opened in the inner peripheral surface at the back of the housing portion 50, and the supply-side passage 52 communicates with the supply-side ring passage 7.

An opening / closing valve body 53 is slidably housed in the housing portion 50. The opening / closing valve body 53 opens and closes the valve port 51, and when the valve port 51 is opened. The liquid in the container body 1 is supplied to the supply side ring passage 7.
From the spray ring mechanism 8 and sprayed from the spray nozzle mechanism 10. An O-ring 54 for maintaining the seal is interposed at the tip of the on-off valve body 53.

A cap member 55 is screwed into an open end of the housing portion 50. The valve shaft 56 of the opening / closing valve body 53 penetrates the cap 55 and protrudes to the outside. A head 57 is formed at the tip of the valve shaft 56, and the head 57 is engaged with the above-described engagement projection 58 of the lever 14. Therefore, by operating this lever 14, the opening / closing valve body 53 is opened / closed via the above-mentioned valve shaft 56, so that the liquid is sprayed. A valve shaft packing 59 made of an elastic material such as synthetic rubber is provided at a portion where the valve shaft 56 passes through the cap member 55 to maintain the seal.

A compression coil spring 60 made of a metal material such as stainless steel is interposed between the on-off valve body 53 and the cap member 55, and the on-off valve body 63 is provided by the spring 60. Are urged to sit on the valve port 51.

A boot member 61 made of an elastic material such as synthetic rubber is provided around the spring 60. The boot member 61 has a tubular shape, surrounds the outer periphery of the spring 60, and has a front end fitted between the opening / closing valve body 53 and the front end of the spring 60 while maintaining a seal. The base end of the boot member 61 is held between the opening edge of the housing portion 50 and the cap member 55 while maintaining a seal.

The boot member 61 divides the interior of the housing portion 50 into a portion where the valve port 51 and the supply-side passage 52 are open and a portion where the spring 60 is accommodated. A partition member is configured to block the flow of liquid between these parts. Therefore, the boot member 61 functions as a blocking member that prevents the liquid from coming into contact with the spring 60. The boot member 61 elastically expands and contracts in the axial direction when the opening and closing valve 53 is opened and closed.

Next, the operation of the above atomizer will be described. Prior to use, the pressurized sprayer operates the pressurizing pump mechanism 3 to press air into the container body 1. In this case, the air pressurized by the pressurizing pump mechanism 3 is supplied to the flapper valve body 4 on the lower surface of the housing 31 of the check valve mechanism 30.
0 is elastically deformed and pressed into the container body 1.

When the pump is not pressurized, the flapper valve 40 is in close contact with the bottom surface of the housing 35 to close the communication hole 39. Therefore, the liquid inside the container body 1 is prevented from entering the housing 35, and the liquid does not contact the spring 38. Therefore, even when the liquid is acidic water, the metal spring 38 is reliably prevented from being corroded by the acidic water. Even when the liquid contained in the container body 1 is a reagent or the like, the reagent does not come into contact with the metal spring 38, so that elution of metal ions and the like is reliably prevented.

Next, when spraying, the lever 11 is operated to open the on-off valve mechanism 13. Thus, the liquid in the container body 1 is supplied to the spray nozzle mechanism 10 via the liquid supply pipe 12, the supply-side ring passage 7, the opening / closing valve mechanism 13, the discharge-side ring passage 8, and the discharge-side passage 16 by the internal air pressure. Sent and sprayed.

In this case, the liquid flows into the housing portion 50 of the on-off valve mechanism 13 from the supply side passage 52,
It flows out from the valve port 51. However, this housing part 50
The inner spring 60 is prevented from being in contact with the liquid by the boot member 61, so that even when the liquid is acidic water or the like, the spring 60 is reliably prevented from being corroded.

In this embodiment, metal springs 24 and 25 are provided in addition to the spring 38 of the check valve mechanism 30 and the spring 60 of the open / close valve mechanism 13. However, these buffer springs 24,
Since there is no possibility that the buffer spring 25 comes into contact with the liquid in the container body 1, these buffer springs 24 and 25 do not need a mechanism for preventing the above-mentioned contact with the liquid.

The present invention is not limited to the first embodiment. For example, FIG. 4 shows a spring 70 used in the second embodiment of the present invention. The spring 70 has a wire 71 made of a metal material such as stainless steel.
Is provided with a coating film 72 made of a flexible synthetic resin material.

Such a spring 70 is incorporated as a spring for biasing the valve element of the above-described check valve mechanism or on-off valve mechanism of the sprayer. Such a spring 7
0 indicates that even when the liquid comes into contact with the liquid,
1 does not come into contact with the wire 71,
No metal ions are eluted. When such a spring 70 is used, needless to say, it is not necessary to provide the above-mentioned flapper valve element, boot member and the like.

FIG. 5 shows an opening / closing valve mechanism 13 used in the third embodiment of the present invention. In this embodiment, a diaphragm member 65 is used instead of the boot member of the first embodiment. This diaphragm member 6
Reference numeral 5 is formed of an elastic material such as synthetic rubber and has a thin disk shape.

The center of the diaphragm member 65 is fitted between the on-off valve 53 and the tip of the spring 60 while maintaining a seal. The peripheral edge is the opening edge of the housing 50. And the cap member 55 are fitted and held while maintaining a seal. The opening and closing valve mechanism of this embodiment has the same configuration as that of the above-described first embodiment except for the above points. In FIG. 5, portions corresponding to those of the first embodiment are denoted by the same reference numerals. The description is omitted.

In this embodiment, the diaphragm member 65 prevents the liquid flowing in the housing portion 50 from flowing to the spring 60, thereby preventing the liquid from coming into contact with the spring 60. . In addition, when the on-off valve body 53 opens and closes, the diaphragm 65 is bent and deformed.

The present invention is not limited to the above embodiment. For example, the pressurized sprayer to be applied is not limited to a small sprayer as in this embodiment, but may be a large sprayer for spraying agricultural chemicals. It can also be applied to pressure atomizers and other types of atomizers.

Further, the shape and structure of the shielding member for preventing the contact between the spring and the liquid are not necessarily limited to those described above, and it goes without saying that various shapes and structures can be adopted.

[0050]

As described above, according to the present invention, since the spring of the check valve mechanism of the pressurizing pump mechanism and the spring of the on-off valve mechanism are provided with a shielding member for preventing the liquid from coming into contact with the spring, the spring is provided with the liquid. Can reliably be prevented from coming into contact with each other. Since all of the parts other than the spring can be formed of a synthetic resin material, the liquid in the container body can be formed so as not to come into contact with a metal material other than the synthetic resin material at all. Even in the case of an acidic water or a reagent, the effect is great, for example, corrosion of the spring and elution of metal ions are reliably prevented.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a pressurized sprayer according to a first embodiment of the present invention.

FIG. 2 is a longitudinal sectional view of a part of a check valve mechanism according to the first embodiment.

FIG. 3 is a longitudinal sectional view of a portion of the on-off valve mechanism according to the first embodiment.

FIG. 4 is a longitudinal sectional view of a spring according to a second embodiment.

FIG. 5 is a longitudinal sectional view of a portion of an opening / closing valve mechanism according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container main body 2 Lid 3 Pressure pump mechanism 13 Opening / closing valve mechanism 30 Check valve mechanism 31 Housing part 34 Check valve body 38 Spring 39 Communication hole 40 Flapper valve body 50 Housing part 51 Valve port 52 Supply side passage 53 Opening / closing valve Body 60 Spring 61 Boot member 72 Coating film 65 Diaphragm member

Claims (6)

[Claims] 1. A container body made of synthetic resin having a pressure resistance and containing a liquid therein, a pressurizing pump mechanism made of synthetic resin for press-fitting air into the container body, and a composition for spraying the liquid. A resin spray nozzle mechanism, a liquid passage for guiding the liquid in the container body to the spray nozzle mechanism, and a synthetic resin opening / closing valve mechanism provided in the middle of the liquid passage to open and close the liquid passage. The pressurizing pump mechanism includes a piston cylinder mechanism made of synthetic resin and a check valve mechanism made of synthetic resin provided at an end of the piston cylinder mechanism. A check valve body and a spring made of a metal material for urging the check valve mechanism, and a shielding member for preventing the spring from contacting the liquid in the container body. Is provided, The opening / closing valve mechanism includes a synthetic resin opening / closing valve body for opening and closing the liquid passage, and a metal material spring for biasing the opening / closing valve body. A pressurized sprayer comprising a shielding member for preventing contact with a liquid in a liquid passage. 2. The check valve mechanism of the pressurizing pump mechanism,
A housing portion, one end of which communicates with the piston cylinder mechanism, and the other end of which is formed with a communication hole which opens into the container main body; A valve body and a spring are housed, and the shielding member is a flapper valve body made of an elastic material provided in a portion of the communication hole and configured to allow only a flow from the piston cylinder mechanism side to the inside of the container body. The pressurized spray according to claim 1, characterized in that: 3. The opening / closing valve mechanism includes a housing, and a valve port communicating with the spray nozzle mechanism and a supply-side passage communicating with the inside of the container body are opened at an end of the housing. The opening and closing valve body and the spring are accommodated in the housing portion, and the shielding member includes a portion where the valve port and the supply-side passage are opened in the housing; 2. The pressurized sprayer according to claim 1, wherein the partition member is made of an elastic material for partitioning a portion in which the spring is accommodated. 4. The pressurized spray according to claim 3, wherein the partition member is a boot member formed of an elastic material and having a cylindrical portion surrounding the outer periphery of the spring. 5. The pressurized atomizer according to claim 3, wherein the partition member is a diaphragm member formed of an elastic material and provided across the inside of the housing. 6. The pressurized sprayer according to claim 1, wherein said shielding member is a coating film made of a flexible material and adhered to a surface of said spring.