JP3102292U - Simple pump proportioner - Google Patents

Abstract

An object of the present invention is to accurately control a suction amount of a foam extinguishing solution.
A simple suction port having a suction port communicating with a water introduction inlet and a water introduction outlet, and a metering cock connected to the suction port for regulating a suction amount of the foam fire extinguishing solution. The pump proportioner 1, wherein the metering cock 15 includes a housing 17 having a stock solution flow path 18 connected to the suction port 7 and a cock fitting portion 20 continuous with the stock solution flow path 18. And a cylindrical orifice 35 rotatably fitted to the cock fitting portion 20. The cock fitting portion 20 is provided with a first connection port 25 and a second connection port 27 separately. The cylindrical orifice has a cylindrical portion 38 provided with a first orifice 40 communicable with the first connection port and a second orifice 42 communicable with the second connection port. Between the fitting part and the cylindrical orifice Between the cylindrical portion, the sealing means 44, 45 are provided.
[Selection diagram] Fig. 1

Description

  The present invention relates to a proportioner used for fire trucks and the like, and particularly to a simple pump proportioner used detachably attached to a fire truck and the like.

  In the case of fire A, that is, a general fire such as a wooden fire, the fire engine drives a fire pump mounted on the fire engine to discharge fire water from nozzles, thereby performing so-called water fire.

  However, in the case of fire B, that is, oil fire, it is difficult to extinguish water. Therefore, a simple pump proportioner is attached to a fire engine, and 3% of foam fire extinguishing solution is mixed with fire extinguishing water. Is going.

  This simple pump proportioner sucks the foam fire extinguishing solution from the outside by the water feed outlet connected to the suction side of the fire pump, the water feed inlet to which the introduced water is supplied, and the ejector action of the water flowing from the water feed inlet to the water feed outlet. A line proportioner having a suction port, and one end connected to the discharge side of the fire pump, the other end connected to the water inlet of the line proportioner, and a part of the water discharged from the fire pump to the line proportioner. And a foam hose connected to a suction port of a line proportioner and supplying an external foam fire extinguishing solution into the line proportioner by an ejector action. 1).

Japanese Utility Model Publication No. 4-70052

  As described above, water and fire extinguishing are used separately in consideration of the types of burning materials such as wood and oil.However, in the case of water extinguishing, so-called deep fires such as plastics such as cardboard and styrofoam resin are used. On the other hand, even if water is sprayed, the water is repelled by surface tension and the cooling effect is not sufficiently exhibited, so that it is difficult to completely extinguish the fire.

Therefore, in order to sufficiently exert the cooling effect of the fire extinguishing water, it is conceivable to mix a small amount of fire extinguishing water, for example, 0.1 to 0.3% of a foam fire extinguishing solution with the fire extinguishing water to improve the wettability to combustibles of the fire A. Can be
Then, it is conceivable that the adjustment of the suction amount of the foam fire extinguishing liquid is performed by adjusting the opening degree of the metering cock.

  In the conventional example of the metering cock, the flow rate of the foam fire extinguishing solution is adjusted by rotating the rotating body provided in the housing, but there are structural problems such as leakage from a gap between the housing and the rotating body. Yes, it is difficult to accurately perform micro-adjustment. In the case of foam extinction, that is, a 3% mixture of foam extinction solution, there is no particular problem even if a little amount of foam extinction solution is supplied, but in the case of a very small amount, that is, 0.1 to 0.3% mixture, as designed. Flow rate is extremely important.

  In view of the above circumstances, it is an object of the present invention to accurately control the suction amount of the foam fire extinguishing stock solution.

  The present invention is a simple pump proportioner having a suction port communicating between a water introduction inlet and a water introduction outlet, and a metering cock connected to the suction port and regulating a suction amount of the foam fire extinguishing solution. The metering cock is rotatably fitted to the housing having a stock solution flow path connected to the suction port, a cock fitting portion continuous with the stock solution flow channel, and the cock fitting portion. A first connection port and a second connection port are separately provided in the cock fitting portion, and the first connection port is provided in a cylindrical portion of the cylindrical orifice. A first orifice that can communicate with the port and a second orifice that can communicate with the second connection port are provided, and sealing means is provided between the cock fitting portion and the cylindrical portion of the cylindrical orifice. It is characterized by having been done.

  The invention is characterized in that the first connection port or the second connection port is closed by a stopper. The sealing means of the present invention is a sealing ring in which an O-ring is inserted. The second orifice of the present invention is characterized in that it comprises a plurality of orifices having different diameters arranged at intervals in the circumferential direction. A switching display section is provided at the rear end of the cylindrical portion of the cylindrical orifice of the present invention.

  The metering cock of the present invention is rotatably fitted to the housing having a stock solution flow path connected to the suction port, a cock fitting part continuous with the stock solution flow path, and the cock fitting part. A first connection port and a second connection port are separately provided in the fitting portion, and the first connection port is provided in the cylindrical portion of the cylindrical orifice. A first orifice that can communicate with the port and a second orifice that can communicate with the second connection port are provided, and sealing means is provided between the cock fitting portion and the cylindrical portion of the cylindrical orifice. Therefore, even a small amount of the fire extinguishing solution can be accurately sucked. Therefore, 0.1 to 0.3% of the original foam fire extinguishing solution can be mixed with the fire extinguishing water as designed.

  Since the first connection port and the second connection port are separately provided, when the pickup tube inserted into the tank is connected to the first connection port, 3% of the foam can be mixed with the fire extinguishing solution. When connected to the connection port, it is possible to accurately mix 0.1 to 0.3% of foam fire extinguishing solution.

An embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 5, the simple pump proportioner 1 includes a water inlet 3 having a nozzle 2 therein, a water outlet 5 communicating with the water inlet 3, and a suction port communicating between the ports 3 and 5. 7 is provided.

  The water supply inlet 3 is connected to a water supply hose 9, and a water supply port 11 with a joint 10 is provided at a distal end of the water supply hose 9. The water outlet 5 is provided with a joint 13. A metering cock 15 is connected to the suction port 7 via an elbow joint 14.

  The housing 17 of the metering cock 15 is provided with a stock solution flow path 18 and a cock fitting portion 20 that is continuous with the stock solution flow path 18. In the cock fitting portion 20, a first communication hole 21 and a second communication hole 23 are provided diametrically opposed. The diameter of the first communication hole 21 is formed larger than that of the second communication hole 23.

  The communication hole 21 communicates with a connection port for foam fire extinguishing 3% (referred to as “first connection port”) 25, and the communication hole 23 includes a connection port for class A fire extinguishing agent (referred to as “second connection port”). 26. The two connection ports 25 and 27 have the same diameter and are formed to have a diameter larger than the diameter of the communication holes 21 and 23, and screw portions 28 and 29 are provided on the inner peripheral surface thereof.

  Mixing ratio setting marks 30 and 31 are provided at predetermined positions of the connection ports 25 and 27. Both the marks 30 and 31 are provided on the switching display section 36 side of the cylindrical orifice 35. The mark 30 is a 3% mark for extinguishing bubbles. For example, a red recess is used as the mark 30. The mark 31 is a mark for a class A fire extinguishing agent. As the mark 31, for example, a blue concave portion is used.

A cylindrical orifice 35 is rotatably fitted to the cock fitting portion 20. The cylindrical orifice 35 has a cylindrical portion 38 and a columnar portion 39.
The cylindrical portion 38 is provided with a plurality of orifices having different sizes at intervals in the circumferential direction. The first orifice 40 is a standard, that is, an orifice for 3% of foam fire extinguishing solution, and has a diameter of 5 mm to 6 mm.

  When the cylindrical orifice 35 is rotated clockwise by a predetermined angle, for example, 45 degrees clockwise, the orifice 40 makes a clicking sound and the mixing ratio setting mark 30 which coincides with the closing of the switching display unit 36. However, since the orifice 40 coincides with the 3% bubble, the orifice 40 is fully opened and communicates with the first communication hole 21. When closing the orifice 40, the cylindrical orifice 35 is rotated in the opposite direction to the above. However, when the orifice 40 is returned to the original closed position, a click is heard and further rotation cannot be performed.

The second orifice 42 is an orifice for a small amount, that is, 0.1 to 0.3% of the foam fire extinguishing solution, and has a diameter of 1.0 mm to 2.3 mm. The second orifice 42 is composed of three orifices I, II, and III having different diameters corresponding to the water discharge amount (nozzle flow rate) of the water discharge nozzle 60 connected to the water discharge port 56, respectively.
The corresponding nozzle flow rate of Orifice I is set at 50 to 500 L / min, the corresponding nozzle flow rate of Orifice II is set at 450 to 1200 L / min, and the corresponding nozzle flow rate of Orifice III is set at 1000 to 2000 L / min. The diameter (diameter) of the orifice 42 increases in the order of I, II, and III.

When the cylindrical orifice 35 in the closed state is rotated in a predetermined direction, each time the orifice reaches a position where it is fully opened, a click sound is made and the orifice communicates with the second communication hole 23. When all the orifices are closed, the cylindrical orifice 35 is rotated in the opposite direction to that described above. However, when the orifice is returned to the original closed position, a click sound is made and further rotation cannot be performed.
The diameter of the communication hole 21 is larger than the diameter of the first orifice 40, and the diameter of the communication hole 23 is larger than the diameter of the second orifice 42.

At the rear end of the cylindrical portion 39 of the cylindrical orifice 35, a switching display portion 36 is provided. The display 36 displays "closed, 3% foam" (red) for foam fire extinguishing 3%, and "III, II, I, closed" (blue) for class A fire extinguishing agent. The indication of "bubble 3%" for 3% of foam extinguishing indicates that the foam extinguishing solution 3% is fully opened.
Further, I in the display of "III, II, I, Closed" for Class A fire extinguishing agent indicates the range of the water discharge flow rate of the water discharge nozzle 60, I indicates the nozzle flow rate of 50 to 500 L / min., And II indicates 450 to 500 L / min. 1200 L / min. And III correspond to 1000 to 2000 L / min.
In addition, a display plate indicating the relationship between I, II, and III and the nozzle flow rate is provided in an easily visible place near the switching display unit 36.

  A gap is provided between the cylindrical portion 38 of the cylindrical orifice 35 and the cock fitting portion 20, and a seal is provided in the gap. As this sealing means, a seal ring 44 is used, and an O-ring 45 is inserted into the end face on the communication hole 23 side.

  In the drawing, 47 is a packing, 48 is a check valve ball inserted into the stock solution flow path 18, 49 is a stopper plug screwed to the first connection port 25 or the second connection port 27, and 50 is a slide. A ball joint, 51 is a lock nut for fixing the tube fixing tube 52 to the connection port, 53 is a pickup tube having one end connected to the tube fixing tube 52 and the other end connected to the pickup 54, 55 is a suction tube, and 56 is a release tube. The mouth, 58 indicates a fire pump, and 60 indicates a nozzle.

Next, the operation of the present embodiment will be described.
When sucking the foam fire extinguishing solution corresponding to the nozzle flow rate of 450 to 1200 L / min .:
The tube fixing tube 52 is inserted into the second connection port 27, and is fixedly fastened with the lock nut 51. A stopper plug 49 is screwed into the first connection port 25 to close the connection port 25.
By rotating the cylindrical orifice 35, the II of the switching display section 36 is matched with the mixture ratio setting mark 31.

The water supply port 11 of the water supply hose 9 and the discharge port 56a on the discharge side of the fire pump 58 are connected by a joint 10, and the water supply outlet 5 and the relay port 61 on the suction side of the fire pump 58 are connected by the joint 13. connect.
Next, the tip of the pickup tube 53 is inserted into the tank 63, and the pickup 54 is put into the foam fire extinguishing solution G.

  When the fire pump 58 is driven, the fire water W is sucked from the suction pipe 55. The fire extinguishing water W sucked into the suction side of the pump 58 is discharged to the discharge side and discharged from the water discharge nozzle 60.

  At this time, the fire-extinguishing water W on the discharge side flows into the suction side via the water supply port 11, the water supply hose 9, the water supply inlet 3, the nozzle 2, the water supply outlet 5, and the relay port 61, so that an ejector action is generated. Therefore, the foam fire extinguishing solution G in the tank 63 passes through the pickup 54, the pickup tube 53, the second communication hole 23, the orifice II, and the stock solution flow path 18, and is sucked into the fire extinguishing water W from the suction port 7.

  In the gap between the cock fitting portion 14 of the housing 17 and the cylindrical portion 38 of the cylindrical orifice 35, a sealing means (seal ring 44 into which an O-ring 45 is inserted) is provided. Does not leak into the stock solution flow path 18. Therefore, the flow rate of the sucked foam fire extinguishing solution G can be accurately controlled as designed.

  The foam fire extinguishing liquid G that has flowed into the fire extinguishing water W from the suction port 7 mixes with the fire extinguishing water W to form a mixed water WG, is pumped from the suction side to the discharge side, and is discharged from the water discharge nozzle 60 toward the combustion material. . At this time, the mixing ratio of the foam fire extinguishing solution G to the nozzle flow rate is 0.2%.

  When the cylindrical orifice 35 is rotated so that I of the switching display unit 36 matches the mixing ratio setting mark 31, 50 to 0 L / min. When the foam fire extinguishing liquid corresponding to the nozzle flow rate is sucked, the mixing ratio becomes 0.1% of mixed water, and when the III of the switching display section 36 matches the mixing ratio setting mark 31, 1000 to 2000 L / min. The foam-extinguishing stock solution corresponding to the nozzle flow rate is sucked, and the mixing ratio becomes 0.3% of mixed water.

When sucking 3% of foam fire extinguishing solution:
The tube fixing tube 52 is inserted into the first connection port 25, and tightened and fixed with the lock nut 51. A closure plug 49 is screwed into the first connection port 27 and closed.
The cylindrical orifice 35 is rotated to match the 3% bubble of the switching display section 36 with the mixing ratio setting mark 30.

  Subsequent operations and the like are the same as in the above-described case of “when sucking the foam for extinguishing foam corresponding to the nozzle flow rate of 450 to 1200 L / min.”, And thus the description thereof will be omitted.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows embodiment of this invention and is a longitudinal cross-sectional view of the metering cock of "in the case of sucking the foam fire extinguishing liquid corresponding to 450-1200 L / min of nozzle flow rates". It is a figure which shows a part of side surface of a metering cock, and is a figure which shows a switching display part. It is a flowchart of a simple pump proportioner. It is a longitudinal cross-sectional view of the metering cock when sucking 3% of foam fire extinguishing solution. It is a component diagram of a simple pump proportioner.

Explanation of reference numerals

DESCRIPTION OF SYMBOLS 1 Simple pump proportioner 3 Water introduction inlet 5 Water introduction outlet 7 Suction port 15 Metering cock 17 Housing 18 Raw liquid flow path 20 Cock fitting part 25 First connection port 27 Second connection port 35 Cylindrical orifice 38 Cylindrical part 40 First orifice 42 Second orifice 44 Seal ring 45 O-ring W Fire extinguishing water G Foam fire extinguishing solution WG Mixed water

Claims (5)

A simple pump proportioner comprising: a suction port communicating between a water introduction inlet and a water introduction outlet; and a metering cock connected to the suction port to regulate a suction amount of the foam fire extinguishing solution;
The metering cock includes a housing having a stock solution flow path connected to the suction port, a cock fitting portion continuous with the stock solution flow channel, and a cylinder rotatably fitted to the cock fitting portion. And a type orifice,
A first connection port and a second connection port are separately provided in the fitting portion;
The cylindrical portion of the cylindrical orifice is provided with a first orifice that can communicate with the first connection port and a second orifice that can communicate with the second connection port,
A simple pump proportioner, wherein sealing means is provided between the cock fitting portion and the cylindrical portion of the cylindrical orifice.   The simple pump proportioner according to claim 1, wherein a stopper is attached to or detached from the first connection port or the second connection port.   The simple pump proportioner according to claim 1, wherein the sealing means is a seal ring into which an O-ring is inserted.   2. The simple pump proportioner according to claim 1, wherein the second orifice is constituted by a plurality of orifices having different diameters arranged at intervals in a circumferential direction.   5. The simple pump proportioner according to claim 1, wherein a switching display portion is provided at a rear end of the cylindrical portion of the cylindrical orifice.

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