JPH1015103A - Fire extinguishing hand pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make firefighting activities efficient by internally coupling a small- diameter inner pipe as well as a piston cylinder having a handle pipe to a cylinder having a nonreturn valve at a filling port at the base end thereof, and enabling a liquid to be discharged at the time of not only pulling the piston cylinder toward a base, but also moving the piston cylinder a toward end. SOLUTION: When a handle pipe 19 is moved to a forward end, the internal pressure of a cylinder chamber 20 becomes negative. and liquid is delivered to the cylinder chamber 20 via a connection hose H. Thereafter, when the handle pipe 19 is pulled toward an operator, the cylinder chamber 20 is pressurized, and a ball 5 closes a filling port 4a. At the same time, the liquid contained in the cylinder chamber 20 flows into an inner pipe 10 and is discharged from a nozzle 24. In this case, the internal pressure of a spare chamber 21 becomes negative, and a part of the liquid is drawn from a communication hole 18 to the spare chamber 21. Subsequently, when the handle pipe 19 is moved toward a forward end, the internal pressure of the cylinder chamber 20 becomes negative and the liquid is delivered from the filling port 4a. In addition, the liquid in the spare chamber 21 is forced out into the inner pipe 10 and discharged from the nozzle 24.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention mainly relates to forest fires,
Regarding manual pumps used as a means of radiating water and fire extinguishing agent liquid during human-like fire fighting during an earthquake,
It is intended to improve the efficiency of liquid radiation.

[0002]

2. Description of the Related Art A conventionally known manual pump has a structure in which a cylindrical pipe is doubled, and the inner pipe is moved to a negative pressure by moving one inner pipe to the other outer pipe. The liquid is sucked from the base, and after the suction is completed, the outer pipe is moved in the opposite direction to pressurize the inner pipe, and the check valve prevents the liquid from flowing back, and the water or fire extinguisher liquid carried by the fire-extinguishing worker is
The radiation from the nozzle at the tip of the inner tube is used.

[0003]

This hand-operated pump allows rescue workers to freely enter fire-extinguishing places, such as in forests and earthquakes, where fire-extinguishing vehicles cannot enter. It is practical in that it can be done, but on its structure, by directing the tip of the pump to the fire spot and moving the outer tube toward the tip,
The liquid in the inner pipe is discharged from the tip toward the fire by the pressure in the inner pipe formed by drawing the liquid from the liquid tank into the inner pipe into the inner pipe and pulling the outer pipe in the base direction. In addition, the discharge of the liquid is performed only when the outer tube is pulled in the proximal direction, and the liquid discharge operation is performed intermittently, which is extremely inefficient.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention solves the above-mentioned various problems in the prior art, and improves the structure of the above-mentioned manual pump so that the outer tube is drawn toward the base. In addition, the liquid discharge is performed even when the liquid is moved in the distal direction, and the efficiency of the fire extinguishing activity is improved by making the liquid discharge substantially continuous.

That is, the present invention specifically provides a cylindrical cylinder having a check valve at a base inlet and a cylinder slidable along the cylinder toward the distal end. The inner pipe is so small that it can be inserted and has a certain distance between the inner wall of the cylinder and the inner wall of the cylinder. An outer peripheral surface comprising a piston cylinder having a handle pipe formed coaxially with the inner pipe, and further having a suction port provided with a check valve at a central portion attached to the base end of the inner pipe, A spare chamber is formed between the inner pipe and the cylinder by a valve body that slides on the inner wall surface of the cylinder and a plug that slides on the outer peripheral surface of the inner pipe that is formed on the inner peripheral surface of the cylinder tip. The position of the body closer forms a through hole communicating the spare room, further to the head portion about the extinguishing manual pump characterized by comprising attached radiation nozzle.

With this configuration, when the gripping pipe is gripped and slid in the distal direction, the valve body at the base end of the inner pipe moves in the distal direction of the cylinder.
In response to this, the pressure in the cylinder becomes negative, and the liquid is sequentially injected from the base injection port by pushing the check valve. Next, when the handle pipe is pulled in the forward direction, the inside of the cylinder is gradually pressurized at the same time as the check valve of the cylinder is closed, and the liquid flows into the inner pipe from the check valve at the base end of the valve body, and the liquid flows from the nozzle at the tip as it is. Emitted to firefighters.

At this time, a negative pressure is simultaneously generated in the preparatory chamber, so that a part of the liquid is sucked into the preparatory chamber through the through hole.
It is stored as it is, and when the handle pipe is turned back and moved in the distal direction, the inside of the cylinder becomes negative pressure as described above, and liquid is pushed from the base injection port by pushing the check valve and sequentially injected. In addition, the reserve chamber is gradually compressed and the accumulated liquid is pushed out from the through-hole into the inner pipe, extinguishing the fire outside the nozzle at the tip with the check valve at the valve at the base end of the inner pipe closed. It is continuously emitted towards the target area.

In other words, the liquid in the cylinder is not only released from the tip when the handle pipe is drawn, but also at the same time, a part of the liquid is sucked into the spare chamber from the through hole and stored therein. When the liquid is folded back in the direction and the next liquid is sucked into the cylinder, the radiation can be continued from the nozzle toward the fire target area.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the present invention will be described below with reference to one embodiment shown in FIGS. 1 to 3. 1 is a cylinder, 9 is along the cylinder 1 and its inner peripheral surface. A piston cylinder having a coaxial inner pipe 10 located on the side and a gripping pipe 19 located on the outer peripheral surface and movable in the longitudinal direction while being in sliding contact with the outer peripheral surface of the cylinder 1 is shown. The cylinder 1 has a cylindrical shape, and a check valve 2 is attached to one base end in the longitudinal direction. The check valve 2 has a connection 4 to a hose H, and the connection 4 is provided with an inlet 4a, and a hemispherical valve seat 3 is formed on the inner surface of the cylinder 1 so as to face the inlet 4a. 5 is loosely fitted. Reference numeral 6 denotes a cross-shaped ball holder.

Further, a plug 7 is attached to the other end of the cylinder 1 so as to slide on the outer peripheral surface of the inner pipe 10 via a seal member 8. As the inner pipe 10 of the piston cylinder 9, a pipe whose diameter is small enough to be able to interpose a predetermined distance between the inner pipe 10 and the inner wall surface of the cylinder is used. The inner pipe 10 is integrally formed with the portion via a head portion 11, and a valve body 12 is attached to the base end of the inner pipe 10.

The valve body 12 has a sealing member 15 on its outer peripheral surface.
The cylinder 1 is slidably in contact with the inner peripheral surface of the cylinder 1 and has a suction port 13 at the center thereof, and a hemispherical valve seat 14 is formed on the side facing the inner pipe 10. Further, the ball 16 constantly pressed toward the suction port 13 side is loosely fitted by the compression spring 17 so as to face the valve seat 14, thereby forming a check valve. Further, a liquid discharge port 23 is formed at the tip end portion 22 of the head 11, and the liquid discharge port 23 is provided around the liquid discharge port 23. By rotating the liquid in the circumferential direction, the liquid is directly jetted or atomized. A nozzle 24 capable of jetting is attached.

The check valve 2 of the cylinder 1 and the valve body 12 formed at the base end of the inner pipe 10 form a cylinder chamber 20 in the cylinder 1 and the valve body 12 of the inner pipe 10 and the cylinder 12. A spare chamber 21 is formed between the inner pipe 10 and the cylinder 1 by the plug 7 attached to the tip of the first pipe 1. Further, in this case, if the inner diameter area of the cylinder 1 is configured to be about twice as large as the outer diameter area of the inner pipe 10, the amount of liquid radiation during the forward movement and the backward movement of the piston cylinder 9 is substantially reduced. It can be uniform and allow for continuous emission. 1
Reference numeral 8 denotes a through hole formed in the inner pipe 10 at a position near the valve body 12 and communicating with the preliminary chamber 21.

In the above construction, a compression spring 17 for pressing the ball 16 toward the valve seat 14 at the base end of the piston cylinder 9 is provided as a urging means for the valve element constituting the check valve. However, in addition to this, the ball urging means is pushed toward the valve seat 3 having the pressing urging means at the base end of the cylinder 1.
May be pressed.

In the above-described configuration, when the handle pipe 19 is gripped during use and is slid in the distal direction, the valve body 12 at the base end of the inner pipe 10 is caused to move.
, The pressure in the cylinder chamber 20 becomes negative in response to this, and the liquid storage bag 26 carried on the back
The liquid in the inside is sequentially injected into the cylinder chamber 20 by pushing the ball 5 from the injection port 4a through the connection hose 27 (see FIGS. 3 and 1).

Next, when the handle pipe 19 is pulled in the forward direction, the inside of the cylinder chamber 20 is gradually pressed, so that the ball 5 closes the injection port 4a and the liquid in the cylinder chamber 20 flows from the suction port 13 of the valve body 12 to the ball 16 Into the inner pipe 10 while pushing it against the pressing force of the compression spring 17, and the nozzle 24
It is radiated from to the fire extinguishing area.

At this time, since the inside of the preliminary chamber 21 has a negative pressure at the same time, a part of the liquid is sucked into the preliminary chamber 21 through the through hole 18 and is stored as it is (see the state of FIG. 2).
Further, when the handle pipe 19 is turned back and moved in the distal direction, the inside of the cylinder chamber 20 becomes a negative pressure as described above, so that the liquid is pushed out from the injection port 4a to push the ball 5 sequentially, and in addition to the preliminary chamber, The liquid stored in the inside 21 is gradually pressed, and is pushed out from the through hole 18 into the inner pipe 10, and the liquid is discharged from the nozzle 24 at the tip while the suction port 13 of the valve body 12 is closed by the ball 16. It is continuously emitted toward the fire extinguishing target area (see the state of FIG. 1).

That is, the liquid in the cylinder chamber 20 is not only discharged from the tip nozzle 24 when the handle pipe 19 is drawn, but also at this time, a part of the liquid is sucked into the preliminary chamber 21 through the through hole 18. When the next liquid is sucked into the cylinder chamber 20 by moving the handle pipe 19 in the direction of the tip toward the tip of the pool,
At the same time, the radiation is continuously emitted from the nozzle 24 toward the fire target area.

[0018]

As described above, the present invention provides a cylindrical cylinder having a check valve at the base inlet and a cylinder slidable along the cylinder toward the distal end. The inner pipe is so small that it can be inserted and has a certain distance between the inner wall of the cylinder and the inner wall of the cylinder. An outer peripheral surface comprising a piston cylinder having a handle pipe formed coaxially with the inner pipe, and further having a suction port provided with a check valve at a central portion attached to the base end of the inner pipe, A spare chamber is formed between the inner pipe and the cylinder by a valve body that slides on the inner wall surface of the cylinder and a plug that slides on the outer peripheral surface of the inner pipe formed on the inner peripheral surface of the cylinder tip. body The head is provided with a radiating nozzle at the head position, and a radiation nozzle is attached to the head.Therefore, only when operating the handle pipe to pull the piston cylinder in the base direction. Because the liquid is released even when moving in the direction of the tip,
It is possible to improve the efficiency of fire fighting by making the liquid discharge substantially continuous.

In this case, when the inner diameter area of the cylinder is set to be about twice as large as the outer diameter area of the inner pipe, when the piston cylinder moves in the distal direction and in the base direction, In this case, the amount of liquid discharged from the nozzle can be made uniform, and liquid discharge without unevenness can be realized.

Further, one of the check valve at the base end of the cylinder and the check valve attached to the base end of the inner pipe of the piston cylinder is provided with biasing means for constantly pressing and biasing the valve body in the suction direction. When the liquid is not radiated, when the liquid is not radiated, the liquid from the liquid storage bag carried at a position higher than the pump is
It can be reliably prevented from flowing out from the tip of the radiation nozzle through the pump cylinder or the inner pipe.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a manual fire pump for extinguishing a fire according to an embodiment of the present invention, in which a piston cylinder is moved in a distal direction.

FIG. 2 is a sectional view showing a case where a piston cylinder is moved in a base direction of a manual fire pump for fire extinguishing according to one embodiment of the present invention.

FIG. 3 is a perspective view showing a use situation of the manual fire pump for fire extinguishing of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cylinder 2 Check valve 3 Valve seat 4 Connection part 4a Injection port 5 Ball 6 Ball holder 7 Plug 8 Seal member 9 Piston cylinder 10 Inner pipe 11 Head part 12 Valve body 13 Suction port 14 Valve seat 15 Seal member 16 Ball 17 Compression spring 18 Through hole 19 Handle pipe 20 Cylinder chamber 21 Preparatory chamber 22 Head tip 23 Liquid discharge port 24 Nozzle 25 Injection port 26 Liquid storage bag 27 Connection hose

Claims (4)

[Claims] 1. A cylindrical cylinder provided with a check valve at a base inlet, and a cylinder slidable in a distal direction along the cylinder. The inner pipe was formed coaxial with the inner pipe so as to be along the outer wall of the cylinder via a head part attached to the tip of the inner pipe, and an inner pipe having a diameter small enough to allow a certain interval to be interposed between the inner pipe and the wall. A valve having a suction pipe provided with a check valve at the center, which is attached to the base end of the inner pipe, and which has an outer peripheral surface slidably in contact with the inner wall surface of the cylinder. Body and
With a plug that slides on the outer peripheral surface of the inner pipe at the inner peripheral surface of the cylinder tip, a spare chamber is formed between the inner pipe and the cylinder. A hand-operated pump for extinguishing fire, characterized in that a through-hole is formed and a radiation nozzle is attached to the head. 2. The manual fire pump according to claim 1, wherein the inner diameter area of the cylinder is set to be about twice the outer diameter area of the inner pipe. 3. A biasing means for constantly biasing the valve body in the suction direction to one of the check valve at the base end of the cylinder and the check valve attached to the base end of the inner pipe of the piston cylinder. The fire-extinguishing manual pump according to claim 1, wherein the pump is provided. 4. A manual pump for fire extinguishing according to claim 1, wherein the radiation nozzle attached to the distal end head of the piston cylinder is a switchable radiation nozzle capable of switching between direct radiation and atomized radiation.