JP7413222B2 - drug release device - Google Patents

Description

The present invention relates to a portable chemical dispensing device for fires, which releases a chemical in advance into buildings where fire is likely to spread (for example, houses with thatched roofs) when a fire breaks out nearby. This is used to prevent the spread of fire. It can also be used as a fire extinguishing device by directly releasing chemicals into a building or the like where a fire is occurring.

BACKGROUND ART Chemical discharge devices such as fire extinguishers that discharge extinguishing agent toward the source of the fire at a fire scene are known. Note that some drug discharging devices are portable, and this type of drug discharging device is provided with a handle at the top and wheels at the bottom for transporting a tank filled with a chemical such as a fire extinguisher. The fire extinguishing device of Patent Document 1 is a type of portable chemical discharge device, and a tank filled with a chemical such as a fire extinguisher is stood upright at a predetermined position except during transportation. When transporting the portable drug release device to a fire scene or the like, the user uses the handle to tilt the portable drug release device so that the wheels are on the ground. Then, the user holds the handle and pushes or pulls the device to rotate the wheels and transport the portable drug release device. When in use, hold the tank upright or tilt it and extend the hose.

JP 2019-80707 Publication

A portable drug release device as shown in Patent Document 1 has a siphon pipe extending straight inside the tank, and is generally used to release the drug inside with the tank standing upright. It is. However, when attempting to release the drug with the tank tilted, the siphon tube extends straight, so not all of the drug in the tank can be released, resulting in a large amount of drug remaining in the tank. Put it away.

The present invention allows for the use of chemicals even when the tank is tilted or laid down during firefighting operations, in the same way as when the tank is used vertically, reducing the amount of chemicals remaining in the tank. It is an object of the present invention to provide a drug release device that can be used.

The present invention provides a tank for storing a fire chemical, a pressure supply device, and a drug delivery pipe provided inside the tank and configured to send the fire chemical from the inside of the tank to the outside by pressure from the pressure supply device. and, when the tank is tipped over, the intake port at the tip approaches the lateral inner surface of the tank due to the weight of the tank, so that a small amount of the fire chemical is discharged by the pressure. This drug release device is characterized in that it can be taken in from the intake port and delivered to the outside.

According to the present invention, even if the tank is used in a tilted or lying position during firefighting, the intake port at the tip of the drug delivery pipe approaches the lateral inner surface of the tank due to its weight when the tank is tipped over. The amount of drug remaining in the body can be reduced. In other words, the chemical can be used up in the same way as when the tank is placed vertically. Therefore, the drug can be released in a stable state with the tank tipped over.

A side view of the portable drug release device 5 of the comparative example when the tank 51 is erected. FIG. 6 is a front view of the portable drug release device 5 of the comparative example when the tank 51 is erected. FIG. 5 is a side sectional view of the portable drug release device 5 of the comparative example when the tank 51 is erected. FIG. 5 is a side sectional view of a portable drug release device 5 of a comparative example during movement. FIG. 5 is a side cross-sectional view of a comparative example of a portable drug release device 5 in a folded state. FIG. 3 is a side view of the portable drug release device 1 of Example 1 when the tank 11 is erected. FIG. 2 is a side sectional view of the portable drug release device 1 of Example 1 in a folded state. A drug delivery tube in a modification of Example 1. FIG. 3 is a side sectional view of the portable drug release device 2 of Example 2 in a folded state. FIG. 3 is a side cross-sectional view of the portable drug release device 3 of Example 3 in a folded state.

1 to 5 show a comparative portable drug release device 5. Here, the comparative example is one in which the drug delivery pipe 58 consisting of a siphon pipe inside the tank is installed straight inside the tank 51, compared to the example described later. This is an example for explaining a problem.

FIG. 1 is a side view of the portable drug release device 5 of the comparative example when the tank 51 is upright, FIG. 2 is a front view of the portable drug release device 5 of the comparative example when the tank 51 is upright, and FIG. 1 is a side cross-sectional view of the portable drug release device 5 of the comparative example when the tank 51 is erected. The portable drug release device 5 is provided with leg portions 52 at three locations below the tank 51 when the tank 51 is erected, and is erected in contact with the ground 9 by the three leg portions 52. Furthermore, two wheels 53 are provided at the bottom of the tank 51. The two wheels 53 are connected by an axle 54, and the axle 54 is fixed to the outer surface of the tank 51. As shown in FIGS. 1 and 2, when the tank is erected, the wheels 53 are suspended from the ground 9.

A handle 55 is provided on the upper part of the tank 51 when it is erected and projects laterally. The handle 55 is a support mechanism that is grounded on the ground 9 to place the tank 51 in a lying state, and can also be used as a handle when moving the tank 51. The handle 55 is formed by bending a tube, and both ends are fixed to the upper outer surface of the tank 51. A pressurized gas container 56 is fixed to the opposite side of the handle 55 in the tank 51, and a gas supply pipe 57 is connected to the upper part of the pressurized gas container 56 via a gas valve (not shown). Gas supply pipe 57 is connected to the inside of tank 51. Further, a drug delivery pipe 58 is fixed to the opening 511 at the top of the tank 51 when it is erected. A hose 6 is connected to the drug delivery pipe 58, and a nozzle (not shown) is provided at the tip of the hose 6.

FIG. 3 is a side cross-sectional view of the portable drug release device 5 in an upright position. A tank 51, a handle 55, and an axle 54 are shown in cross section. A fire chemical 7 is stored in the tank 51. FIG. 3 shows a state in which the amount of fire agent 7 is small, but more than half has been released. The drug delivery pipe 58 extends downward from the opening 511 of the tank 51, and when the tank 51 is erected, the intake port 581 is located at the center of the lower part of the tank 51, and the small amount of the fire drug 7 is transferred to the tank 51. located below. In this application, the bottom of the tank when it is erected will be referred to as the tank bottom. The intake port 581 in the portable drug release device 5 of the comparative example is located near the tank bottom 512. The medicine delivery pipe 58 delivers the fire medicine 7 from the inside of the tank 51 to the outside by pressure from a pressurized gas container 56 that is a pressure supply device, a gas valve (not shown), and a gas supply pipe 57 . The fire agent 7 is a fire agent that has the effect of extinguishing fires and preventing the spread of fire, and may be in liquid form, gel form, thixotropy, or the like.

FIG. 4 is a side sectional view of the portable drug release device 5 during movement. When moving, by tilting the portable drug release device 5 in the direction of the handle 55, the wheels 53 come into contact with the ground 9, and the legs 52 separate from the ground 9. Then, when the user pulls or pushes the handle 55, the wheels 53 can be rotated to move the portable drug release device 5.

After the portable chemical discharge device 5 of the comparative example is moved, gas is supplied from the pressurized gas container 56 with the tank 51 erected as shown in FIG. 3, and pressure is applied to the fire chemical 7. The pressure forces the fire agent 7 through the intake port 581 into the agent delivery tube 58 and out through the hose 6 and out the nozzle. When the tank 51 is installed upright, even if the amount of fire agent 7 becomes low, it accumulates near the tank bottom 512, so almost all of the fire agent 7 can be discharged from the intake port 581 located near the tank bottom 512. I can do it.

However, during firefighting, it is necessary to route the hose 6, and the upper part of the drug delivery pipe 58 is pulled and the portable drug release device 5 tends to fall over, making it unstable for drug release in an upright position. There were aspects that were lacking. On the other hand, it is conceivable to discharge the fire chemical 7 while the portable chemical discharge device 5 is folded down. FIG. 5 is a side sectional view of the portable drug release device 5 in a folded state. In such a state, when the amount of fire agent 7 is large, it can be released, but when the amount of fire agent 7 decreases and the top surface becomes lower than the intake port 581 as shown in FIG. 5, fire agent 7 cannot be released. I can't.

FIG. 6 is a side view of the portable drug release device 1 of Example 1 when the tank 11 is erected. In Example 1, the structure of the drug delivery tube 18 is different from that in the comparative example. Further, the amount of protrusion of the handle 15, which is a support mechanism, to the left in the drawing is larger than that of the comparative example. The length (height) of this handle 15 is larger than the radius of the wheel 13, so that when the tank 11 is used in a lying position, the top side of the tank 11 is located higher than the bottom side. . The opening 111 of the tank 11, the tank bottom 112, the legs 12, the wheels 13, the axle 14, the pressurized gas container 16, and the gas supply pipe 17 are the same as in the comparative example. Further, similarly to the comparative example, the chemical delivery pipe 18 sends the fire chemical 7 from the inside of the tank 11 to the outside using pressure from a pressurized gas container 16 that is a pressure supply device, a gas valve (not shown), and a gas supply pipe 17. .

FIG. 7 is a side sectional view of the portable drug release device 1 of Example 1 with the tank 11 in a state where it is folded down. The drug delivery tube 18 differs from the comparative example in that it has a base tube 181 fixed to the opening 111, a distal tube 182 having an intake port 184 at its tip, and a rotating tube that rotatably connects the base tube 181 and the distal tube 182. mechanism 183. A weight 188 is provided near the intake port 184. The central axis of the base tube 181 and the central axis of the tank 11 are the same. Each component of the drug delivery tube 18 has a strength that will not be crushed by pressure. The tip tube 182 has a bent portion near the rotation mechanism 183.

When the tank 11 is folded down, the portable drug release device 1 is in contact with the ground 9 through the handle 15 and the wheels 13, but the handle 15 is longer in Example 1 than in the comparative example. Therefore, when the tank 11 is supported by the wheels 13 and the handle 15 on a horizontal plane, the lowest part of the inner surface of the tank 11 is lower at a location near the wheel 13 than at a location near the handle 15.

When the chemical is released and the remaining chemical decreases, the fire chemical 7 gathers on the side of the tank bottom 112 which is lowered near the side inner surface. When the tank 11 is tipped over, the rotation mechanism 183 rotates due to the weight of the weight 188 and the tip tube 182, and the intake port 184 approaches the lateral inner surface of the tank 11, moving it to a lower position as shown in FIG. Become. Therefore, in the first embodiment, a small amount of the fire agent 7 can be taken in from the intake port 184 by pressure and sent out to the outside.

When a user discharges a fire agent 7 at a fire scene, etc., he or she tilts the portable agent release device 1 toward the handle 15 as shown in FIG. 7, so that the handle 15 and wheels 13 are in contact with the ground 9. do. Then, the gas valve (not shown) of the pressurized gas container 16 is opened, and the fire agent 7 is released from the nozzle (not shown) provided at the tip of the hose 6. The intake port 184 is located at a low position due to the action of the rotation mechanism 183, and when the fire agent 7 in the tank 11 decreases, it flows to the vicinity of the tank bottom 112 where the intake port 184 is located. Therefore, even if the amount is small, the fire agent 7 can be taken in from the intake port 184 by pressure and sent out to the outside.

In this way, the drug discharging device of this embodiment can be used with the tank 11 tilted down (lying down), so it has good stability and there is no need to worry about the tank 11 falling over when pulling the hose 6. . Moreover, even when the tank 11 is in a state where it is inverted, the medicine inside the tank 11 can be discharged without waste. Note that it is possible to use the existing tank by simply replacing it with the drug delivery tube 18 of this embodiment.

<Modification of Example 1>

FIG. 8 shows drug delivery tubes 18 in three variations of Example 1. In each of the modified examples shown in FIGS. 8(a) to 8(c), the surfaces of the intake ports 185 to 187 are formed obliquely with respect to the central axis of the tip tube 182, and the angle between the intake ports 185 and the inner surface of the tank 11 is is getting smaller. Note that the description of the weight 188 is omitted. The intake port 185 in FIG. 8(a) has a shape parallel to the inner cylindrical surface of the tank 11. By doing so, the reduced amount of fire agent 7 can be released more completely than in the first embodiment. Note that the intake port 184 does not have to be parallel to the inner cylindrical surface of the tank 11. In FIG. 8(b), the angle of the tip of the tip tube 182 is slightly larger than that in FIG. 8(a), and the surface of the intake port 186 is formed to be parallel to the ground 9. The angle at the tip of the intake port 186 may be made larger, or may be made smaller to form an angle between the tip and the intake port 185. FIG. 8(c) shows a modification applied to a round tank bottom 113. In FIG. 8(c), the intake port 187 is along the tank bottom 113.

FIG. 9 is a side sectional view of the portable drug release device 2 of Example 2 in the folded state. The drug delivery tube 28 includes a base tube 281 fixed to the opening 211, a distal tube 282 having an intake port 284, and a bellows tube 283 flexibly connecting the base tube 281 and the distal tube 282. The central axis of the base tube 281 and the central axis of the tank 21 are the same. The drug delivery tube 28 including the bellows tube 283 has a strength that will not be crushed by pressure. The opening 211 of the tank 21, the tank bottom 212, the legs 22, the wheels 23, the axle 24, the pressurized gas container 26, and the gas supply pipe 27 are the same as in Example 1 and Comparative Example. The medicine delivery pipe 28 delivers the fire medicine 7 from the inside of the tank 21 to the outside by pressure from a pressurized gas container 26, which is a pressure supply device, a gas valve (not shown), and a gas supply pipe 27. Further, as in the first embodiment, since the handle 25 is longer than the protrusion of the wheels 23, when the tank 21 is in an inverted state, the opening 211 side is higher and the tank bottom 212 side is lower. Therefore, when the remaining amount decreases, the fire agent 7 gathers on the side of the tank bottom 212 as shown in FIG. Further, when the tank 21 is tilted down, the bellows tube 283 bends due to the weight of the tip tube 282, and the intake port 284 is placed in a low position as shown in FIG.

When discharging the fire chemical 7, the portable chemical discharge device 2 is tilted toward the handle 25 as shown in FIG. 9, so that the handle 25 and wheels 23 are in contact with the ground 9. Then, the gas valve (not shown) of the pressurized gas container 26 is opened, and the fire agent 7 is discharged from the nozzle (not shown) provided at the tip of the hose 6. Due to the weight of the tip tube 282 and the action of the bellows tube 283, the intake port 284 is in a low position. When the fire chemical 7 in the tank 21 decreases, it flows near the tank bottom 212 where the intake port 284 is located. Therefore, even if it is a small amount, the fire agent 7 can be taken in from the intake port 284 by pressure and sent out to the outside.

FIG. 10 is a side sectional view of the portable drug release device 3 of Example 3 in the folded state. The drug delivery pipe 38 has flexibility as a whole, and when the tank 31 is folded down, it bends due to the weight of the drug delivery pipe 38, and the intake port 381 approaches the lateral inner surface of the tank 31. The drug delivery tube 38 is flexible, but strong enough to not be crushed by pressure. The opening 311 of the tank 31, the tank bottom 312, the legs 32, the wheels 33, the axle 34, the pressurized gas container 36, and the gas supply pipe 37 are the same as those in Examples 1 and 2 and the comparative example. The medicine delivery pipe 38 delivers the fire medicine 7 from the inside of the tank 31 to the outside by pressure from a pressurized gas container 36 that is a pressure supply device, a gas valve (not shown), and a gas supply pipe 37 . As in the first embodiment, the handle 35 is long, so when the tank 31 is folded down, the opening 311 side is higher and the tank bottom 312 side is lower. gather at the side of

When discharging the fire chemical 7, the portable chemical dispensing device 3 is tilted toward the handle 35 as shown in FIG. 10, so that the handle 35 and wheels 33 are in contact with the ground 9. Then, the gas valve (not shown) of the pressurized gas container 36 is opened, and the fire agent 7 is discharged from the nozzle (not shown) provided at the tip of the hose 6. The intake port 381 is located at a low position due to the flexibility and weight of the drug delivery pipe 38, and when the fire chemical 7 in the tank 31 decreases, it flows near the tank bottom 312 where the intake port 381 is located. Therefore, even if it is a small amount, the fire agent 7 can be taken in from the intake port 381 by pressure and sent out to the outside.

Although the drug delivery pipe 38 of Example 3 has flexibility, it has enough strength not to be crushed by the pressure supplied from the pressurized gas container 36, which is a pressure supply device, when discharging the fire chemical 7. ing. The drug delivery tube 38 can be formed of thick flexible resin or the like. In Embodiment 3, the drug delivery tube 38 is flexible throughout, but may be flexible in part, such as having flexibility over a certain length near the opening 311. .

The handles 15, 25, and 35 of Examples 1 to 3 protrude from the tanks 11, 21, and 31 toward the side in an upright state. However, it is only necessary that it protrudes toward a side position away from the tanks 11, 21, 31, such as protruding obliquely upward from the tanks 11, 21, 31.
In Examples 2 and 3, no weights are provided near the intake ports 284 and 381, but even if weights are provided near the intake ports 284 and 381 of the drug delivery tubes 28 and 38 like the weight 188 of Example 1, good.
In each of the examples, explanations have been given using a portable type drug discharging device that is equipped with wheels on the tank so that the tank can be moved, but wheels and handles are not essential components, and each of the devices is a stationary type drug discharging device without wheels. A drug delivery tube according to the embodiment may also be provided.

1 Portable drug release device, 11 Tank, 111 Opening, 112 Tank bottom, 113 Tank bottom, 12 Legs, 13 Wheels, 14 Axle, 15 Handle, 16 Pressurized gas container, 17 Gas supply pipe, 18 Drug delivery pipe , 181 base tube, 182 tip tube, 183 rotation mechanism, 184 intake port, 185 intake port, 186 intake port, 187 intake port, 188 weight, 2 portable drug release device, 21 tank, 211 opening, 212 tank bottom , 22 legs, 23 wheels, 24 axle, 25 handle, 26 pressurized gas container, 27 gas supply pipe, 28 drug delivery pipe, 281 base pipe, 282 tip pipe, 283 bellows pipe, 284 intake, 3 portable Drug release device, 31 tank, 311 opening, 312 tank bottom, 32 legs, 33 wheels, 34 axle, 35 handle, 36 pressurized gas container, 37 gas supply pipe, 38 drug delivery pipe, 381 intake, 5 possible Transportable drug release device, 51 tank, 511 opening, 512 tank bottom, 52 legs, 53 wheels, 54 axle, 55 handle, 56 pressurized gas container, 57 gas supply pipe, 58 drug delivery pipe, 581 intake, 6 Hose, 7 Fire agent, 9 Ground

Claims (2)

A tank for storing fire chemicals,
a pressure supply device;
a drug delivery pipe that is provided inside the tank and sends the fire chemical from the inside of the tank to the outside by pressure from the pressure supply device;
a handle provided at the top of the tank to protrude laterally when the tank is erected; and wheels provided at the bottom;
Equipped with
When the tank is tipped over in the direction in which the handle protrudes, the wheels and the handle support the tank;
In a state where the wheels and the handle support the tank on a horizontal plane, the lowest part of the inner surface of the tank is lower at a location near the wheel than at a location near the handle;
When the tank is tipped over, the intake port at the tip of the drug delivery pipe approaches the lateral inner surface of the tank due to its weight, so that a small amount of the fire chemical is taken in from the intake port by the pressure. What is claimed is: 1. A drug release device that is capable of delivering a drug to the outside. The drug delivery tube rotatably connects a base tube located at the top when the tank is erected, a tip tube located at the bottom and having the intake port, and the base tube and the tip tube. Equipped with a rotation mechanism,
The tip tube has a bent portion,
The drug release device according to claim 1, wherein when the tank is tipped over, the intake port moves downward due to rotation of the rotation mechanism.

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