JPH11347461A - Portable liquid sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To effectively spray by increasing the liquid spray quantity per unit time. SOLUTION: In a liquid sprayer in which a hand pump 11 is connected to a bag body 1 for storing liquid through a hose 8, the hand pump 11 is constituted so that the base end side of an inner pipe 13 fitted with a spray nozzle 23 and a plunger at a tip part and a base end part thereof respectively is inserted into an outer pipe cylinder 12 so as to be reciprocated and even in any process of reciprocating movement, liquid is continuously sprayed from the spray nozzle 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable liquid ejector for ejecting a liquid such as water or digestive juice, and more particularly, to a portable liquid capable of efficiently ejecting a liquid particularly for fire extinguishing. Related to injectors.

[0002]

2. Description of the Related Art As a fire extinguishing liquid ejector, there is a liquid ejecting apparatus in which a bag for storing liquid is configured to be portable, and a plunger type manual pump is connected to the bag via a hose. According to such a liquid ejector, a fire engine cannot enter, as in a forest fire, and fire extinguishing activities can be performed even when there is no fire hydrant.

Conventionally, the pump of the above liquid ejector intermittently ejects the liquid in the cylinder during one of the reciprocating movements of the plunger. That is, liquid is sucked into the cylinder when the plunger slides in one direction in the cylinder axis direction, and the sucked liquid is ejected from the nozzle when the plunger slides in the other direction in the cylinder axis direction. .

However, if the liquid is intermittently ejected as described above, the amount of liquid tends to be insufficient for fire extinguishing that requires urgency, and there is a problem that fire extinguishing activities are not always effective.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to provide a portable liquid ejector capable of performing efficient ejection by increasing the amount of liquid ejected per unit time.

[0006]

In order to achieve the above object, a portable liquid ejector according to the present invention is a liquid ejector in which a manual pump is connected to a bag for storing liquid via a hose. The reciprocating insertion of the base end side of the inner pipe with the injection nozzle attached to the distal end and the plunger at the base end inside the outer pipe cylinder, in any stroke of the reciprocation of the inner pipe A liquid is continuously ejected from the ejection nozzle.

[0007] As described above, the manual pump discharges the liquid in the bag body from the injection nozzle in any reciprocating stroke of the inner tube, so that the liquid injection amount per unit time can be increased. Therefore, the liquid can be ejected efficiently, and the fire extinguishing efficiency can be improved particularly when used as a fire-fighting liquid ejector.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The configuration of the present invention will be specifically described below with reference to the accompanying drawings. 1 to 4 illustrate a portable liquid ejector according to an embodiment of the present invention. In the figure, a bag 1 is formed by welding two sheets made of a synthetic resin or a fiber reinforced resin at a peripheral portion, and stores a liquid inside thereof. A pair of left and right ring fittings 2 and 2 are attached to the upper edge of the bag body 1 and a pair of left and right ring fittings 3 and 3 are attached to the side edge, respectively, and both ends of the belt 4 inserted into the ring fittings 2 Are connected to the ring fittings 3, 3. Therefore, the bag body 1 can be carried by hanging the belt 4 extending along the left and right side edges on both shoulders.

A cap 5 for liquid injection is attached to the upper part of the bag 1, and a screw cap 6 is screwed to the cap 5. In addition, a base 7 for discharging liquid is attached to a lower portion of the bag body 1. On the other hand, a connection fitting 9 is attached to one end of the hose 8, and the connection fitting 9 is connected to the liquid discharge base 7 of the bag 1. A pump 11 is connected to the other end of the hose 8.

The pump 11 comprises an outer tube cylinder 12 and an inner tube 1 inserted through a space inside the outer tube cylinder 12.
3 and a double tube structure. A jet nozzle 23 is attached to the tip of the inner tube 13, and a handle 24 is attached near the nozzle. On the other hand, a grip 25 is provided outside the outer tube cylinder 12.

As shown in FIG. 3, the base end (hose side) of the outer tube cylinder 12 is connected to the hose 8 via a connection tube 14 having a check valve. The inside diameter of the connection pipe 14 is gradually narrowed toward the hose side, and a check valve ball 14a, a spring 14b, and a porous plate 14c are sequentially inserted inside the connection pipe 14 and locked by a pin 14d, whereby the reverse is achieved. Stop valve ball 1
4a is held while being urged toward the hose. As a result, the connection pipe 14 constitutes a check valve that allows only liquid movement from the hose 8 to the outer pipe cylinder 12 side. Also,
The hose 8 is externally inserted into one end of the connection pipe 14 and fixed by a band (not shown), and the outer pipe cylinder 12 is screwed to the other end of the connection pipe 14.

On the other hand, at the tip (nozzle side) of the outer tube cylinder 12, an inner cap 15 interposed between the outer tube cylinder 12 and the inner tube 13, and an outer cap 16 for preventing the inner cap 15 from loosening. The O-ring 17 made of rubber or the like is inserted between the outer tube cylinder 12 and the inner tube 13. Thereby, the gap between the outer tube cylinder 12 and the inner tube 13 is liquid-tightly sealed at the distal end of the outer tube cylinder 12.

A plunger 18 whose outer diameter substantially matches the inner diameter of the outer tube cylinder 12 is attached to the base end (hose side) of the inner tube 13. The inner tube 13 and the plunger 18 are connected by a pin 19 penetrating both. An O-ring 20 made of rubber or the like is fitted on the outer peripheral surface of the plunger 18. Plunger 18
Communicates with the inner pipe 13 via a check valve. That is, the inner diameter of the plunger 18 is gradually reduced toward the hose, and the plunger 18 holds the check valve ball 18a inside.
Thus, the plunger 18 constitutes a check valve that allows only liquid movement from the outer pipe cylinder 13 to the inner pipe 13 side. Near the plunger 18, at least one through hole 21 penetrating the wall surface of the inner tube 13 is provided.

The plunger pump 11 having the above-mentioned double pipe structure
Are a cavity A formed inside the outer pipe cylinder 12 between the check valve of the connection pipe 14 and the plunger 18, a cavity B formed inside the inner pipe 13, the outer pipe cylinder 12 and the inner pipe. 13 and plunger 18 and O-ring 17
And a cavity C formed between them, and ejects the liquid by the following operation.

First, from the state shown in FIG. 3, the inner pipe 13 is fully moved outward to extend the pump 11 (stretching stroke).
Then, the cavity A becomes a negative pressure, the check valve ball 14a opens, and the liquid in the bag body 1 flows through the cavity A through the hose 8.
Sucked into. Next, when the inner pipe 13 is fully moved inward and the pump 11 is contracted (contraction stroke), the check valve ball 14a closes and the internal pressure of the cavity A rises to open the check valve ball 18a. When the valve is opened, the liquid flows into the cavity B and further through the through hole 21 to the cavity C.
Cavities B and C are filled with liquid.

Next, when the pump 11 is extended from this state to the state shown in FIG. 4, the capacity of the cavity C decreases, and the liquid in the cavity C flows into the cavity B through the through hole 21. At this time, the check valve ball 18a closes due to an increase in the internal pressure and does not allow the liquid to move toward the outer tube cylinder 12, so that the liquid is injected from the injection nozzle 23.
At the same time, the cavity A has a negative pressure, so that the check valve ball 14a opens and new liquid is sucked into the cavity A.

Next, when the pump 11 is contracted from the state shown in FIG. 4 to the state shown in FIG. 3, the check valve ball 14a is closed, and the internal pressure of the cavity A rises to open the check valve ball 18a. As a valve, the liquid in the cavity A flows into the cavity B through the inside of the plunger 18, and further flows into the cavity C through the through hole 21. At this time, since the capacity of the cavity A is larger than the sum of the capacity of the cavity B and the capacity of the cavity C, the liquid is ejected from the ejection nozzle 23 based on the difference in the capacity.

As described above, the plunger pump 11 having the double pipe structure can discharge the liquid in the bag 1 from the injection nozzle 23 in both the contraction stroke and the extension stroke. The above-described liquid ejector of the present invention has an extremely high ejection efficiency as compared with the conventional liquid ejector, and is therefore effective when used for fire fighting as shown in FIG. In this case, the bag 1
By operating the plunger pump 11 in a state in which the bag is held, the liquid in the bag 1 can be continuously injected without interruption, so that fire extinguishing activities can be performed effectively. In addition, even when a fire engine cannot enter and a fire hydrant does not exist, as in a forest fire, fire extinguishing activities can be performed.

In the present invention, the liquid stored in the bag 1 is not particularly limited. In addition to water, a fire extinguishing liquid or the like can be used. When a fire extinguishing liquid is used as the liquid, an auxiliary nozzle may be connected to the injection nozzle 23. As shown in FIG. 6, the auxiliary nozzle 30 has a connection portion 31 fitted into the injection nozzle 23 and a screw 3 provided on the connection portion 31.
By tightening 2, the nozzle 2 is detachably attached to the injection nozzle 23. An air inlet 33 is provided at an intermediate portion of the auxiliary nozzle 30. A net 34 is attached to the tip of the auxiliary nozzle 30. Therefore, the digestive juice injected from the injection nozzle 23 passes through the auxiliary nozzle 30 while entraining the air through the air inlet 33, and further comes into contact with the net 33 to be scattered in a foam. Thus, the injection nozzle 23
If the auxiliary nozzle 30 is attached to the radiator and a fire extinguishing liquid is used as the liquid, it is possible to extinguish the foam.

In the present invention, the specific structure of the liquid ejector is not limited to the above embodiment, but can be changed to various forms as needed.

[0021]

As described above, according to the present invention, in a liquid ejector in which a manual pump is connected to a bag body for storing liquid via a hose, the manual pump is attached with an injection nozzle at a distal end. A configuration in which the base end side of an inner pipe having a plunger attached to the base end is reciprocally inserted into an outer pipe cylinder, and liquid is continuously jetted from the jet nozzle in any stroke of the inner pipe. By doing so, the liquid ejection amount per unit time can be increased, and the liquid can be ejected efficiently.

Therefore, if the portable liquid ejector of the present invention is used for fire fighting, fire fighting work can be performed effectively.

[Brief description of the drawings]

FIG. 1 is a front view showing a portable liquid ejector according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a sectional view showing a contracted state of a pump in the portable liquid ejector of FIG. 1;

FIG. 4 is a sectional view showing an extended state of a pump in the portable liquid ejector of FIG. 1;

FIG. 5 is a perspective view showing a fire fighting activity using the portable liquid ejector of FIG. 1;

FIG. 6 is a cutaway sectional view showing a foam nozzle used in the portable liquid ejector of FIG. 1;

[Explanation of symbols]

 1 bag 8 hose 11 pump 12 outer tube cylinder 13 inner tube 14a, 18a check valve ball 18 plunger 21 through hole 23 injection nozzle 30 auxiliary nozzle

 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Ramon Ribo Spain, Barcelona, 08970 Santo Juandespi, Abuda. Virgen de Montserrat, 4 Technicas Einheniera de Protection, S.A. (72) Inventor Toru Masutani 2-5-13 Nihonbashi, Chuo-ku, Tokyo Imperial Textile Co., Ltd.

Claims (4)

[Claims] 1. A liquid ejector in which a manual pump is connected to a bag for storing liquid via a hose, wherein the manual pump is connected to an inner tube having an injection nozzle attached to a distal end and a plunger attached to a proximal end. A portable liquid ejector having a configuration in which the base end side is reciprocally inserted into an outer tube cylinder and liquid is continuously ejected from the ejection nozzle in any stroke of the inner tube reciprocating. 2. A check valve for permitting only liquid transfer from the hose to the outer pipe cylinder at a connection between the hose and the outer pipe cylinder, and the outer pipe cylinder at a base end of the inner pipe. A check valve that allows only liquid transfer from the inner tube side to the inner tube side, and penetrates the inner pipe wall near the check valve from the inner pipe cavity to the cavity between the inner pipe and the outer pipe cylinder. 2. The portable liquid ejector according to claim 1, further comprising a hole. 3. The capacity of the cavity of the outer pipe cylinder is larger than the sum of the capacity of the cavity of the inner pipe and the capacity of the cavity between the inner pipe and the outer pipe cylinder. Portable liquid ejector. 4. The portable liquid ejector according to claim 1, wherein an auxiliary nozzle having an air inlet in an intermediate portion is detachably connected to the ejection nozzle.