Proportioner and chemical fire fighting pump motor vehicle

Abstract

To provide a proportioner with a simple configuration capable of suppressing an increase in cost and capable of mixing water and class A agent and mixing water and class B agent even if there is a large difference in the value of the mixing ratio.SOLUTION: A proportioner 5 includes: a water-agent mixing part 13 for mixing water 7 and class A agent 9 or class B agent 11; a flow meter 15 for measuring a flow rate of the water 7; a class A agent control valve 17 for controlling a supply amount of the class A agent 9 to the water-agent mixing part 13; a class B agent control valve 19 for controlling a supply amount of the class B agent 11 to the water-agent mixing part 13; and a control device 21 for controlling the class A agent control valve 17 or the class B agent control valve 19 so that the mixing ratio of the class A agent 9 or the class B agent 11 to the water 7 becomes a predetermined mixing ratio according to the flow rate of water measured by the flow meter 15.SELECTED DRAWING: Figure 2

Description

[Technical field]

[0001] The present invention relates to a proportioner and a chemical fire pump vehicle equipped with the proportioner. [Background technology]

[0002] Conventionally, a chemical fire engine is known that uses water and a class B chemical mixed with a mixer to extinguish a class B fire (see Patent Document 1). As the mixer, for example, a pump proportioner type mixer is used. In this pump proportioner type mixer, the mixture ratio range of the class B chemical to water is set to 3% or 6%. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 4-65563 Summary of the Invention [Problem to be solved by the invention]

[0004] By the way, when extinguishing a Class A fire, instead of using water alone, a mixture of water and a small amount of Class A chemical is sometimes used. By using a mixture of water and a small amount of Class A chemical to extinguish the fire, the amount of water required for extinguishing the fire can be reduced, and the mixture of water and Class A chemical can soak into the wood, etc., preventing the wood, etc. from re-igniting.

[0005] However, the range of Class A water mixtures is 0.1% to 1%, which is significantly different from the 3% and 6% Class B water mixtures. To further illustrate, the minimum Class A water mixture is 0.1%, while the maximum Class B water mixture is 6%, a significant difference.

[0006] This large difference makes it difficult to use a mixer for mixing Class B drugs to mix Class A drugs. Therefore, it may be possible to provide a separate mixer for mixing Class A drugs in addition to the mixer for mixing Class B drugs.

[0007] However, if a mixer for mixing Class A drugs is separately provided in addition to a mixer for mixing Class B drugs, the configuration becomes complicated and the cost increases.

[0008] The present invention aims to provide a proportioner and a chemical fire pump truck which have a simple configuration, can suppress cost increases, and can mix water and Class A chemicals and also mix water and Class B chemicals even if there is a large difference in the mixing ratio values. [Means for solving the problem]

[0009] A proportioner according to one embodiment of the present invention is a proportioner having a water / chemical mixing section which mixes water with a class A chemical or a class B chemical, a flow meter which measures the flow rate of the water, a class A chemical control valve which controls the amount of the class A chemical supplied to the water / chemical mixing section, a class B chemical control valve which controls the amount of the class B chemical supplied to the water / chemical mixing section, and a control device which controls the class A chemical control valve or the class B chemical control valve in response to the water flow rate measured by the flow meter so that the mixing ratio of the class A chemical or the class B chemical to the water becomes a predetermined mixing ratio.

[0010] In the proportioner according to this aspect of the present invention, the water / chemical mixing section is a pump proportioner type mixer.

[0011] A proportioner according to this aspect of the present invention has a mixture ratio setting unit for setting the predetermined mixture ratio, and the control device is configured to control the class A chemical control valve or the class B chemical control valve so as to achieve the predetermined mixture ratio set by the mixture ratio setting unit.

[0012] In addition, in the proportioner according to this aspect of the present invention, the mixture ratio setting unit is equipped with a display unit and an operation switch provided in the vicinity of the display unit, and is configured so that the predetermined mixture ratio is set by operating the operation switch.

[0013] In a proportioner according to an embodiment of the present invention, the maximum mixing ratio value of the class B chemical to the water is 30 to 100 times the minimum mixing ratio value of the class A chemical to the water.

[0014] A chemical fire pump car according to an embodiment of the present invention is a chemical fire pump car having a fire pump car body and the proportioner mounted on the fire pump car body.

[0015] In addition, a chemical fire pump truck according to an embodiment of the present invention is a chemical fire pump truck as described in claim 6, which has a water tank installed on the fire pump truck body and in which the water is stored, and a Class B chemical tank installed on the fire pump truck body and in which the Class B chemical is stored.

[0016] In addition, a chemical fire pump truck according to one embodiment of the present invention is a proportioner having a water / chemical mixing section that mixes the water and the class A chemical or the class B chemical so that the mixing ratio of the water and the class A chemical or the class B chemical becomes a predetermined mixing ratio, a class A chemical control valve that controls the amount of the class A chemical supplied to the water / chemical mixing section, and a class B chemical control valve that controls the amount of the class B chemical supplied to the water / chemical mixing section. Effect of the Invention

[0017] According to the present invention, the configuration is simple, costs can be suppressed, and water and class A chemicals can be mixed, and water and class B chemicals can be mixed, even if there is a large difference in the mixing ratio values. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a diagram showing a chemical fire pump vehicle according to an embodiment of the present invention. [Diagram 2] FIG. 1 is a diagram showing a proportioner according to an embodiment of the present invention. [Diagram 3] FIG. 2 is a diagram showing the display contents (main display contents for pump operation) of the mixture ratio setting unit of the proportioner and chemical fire pump vehicle according to the embodiment of the present invention. [Figure 4] FIG. 2 is a diagram showing the display contents of the mixture ratio setting unit (class A agent) of the proportioner and chemical fire pump car according to the embodiment of the present invention. [Diagram 5] FIG. 2 is a diagram showing the display contents of the mixture ratio setting unit (class B agent) of the proportioner and chemical fire pump car according to the embodiment of the present invention. [Figure 6] FIG. 2 is a diagram showing the class A agent mixing operation of a proportioner and a chemical fire pump vehicle according to an embodiment of the present invention. [Figure 7] FIG. 2 is a diagram showing the class B agent mixing operation of a proportioner and a chemical fire pump vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] As shown in Fig. 1, a chemical fire pump car (chemical fire engine) 1 according to an embodiment of the present invention is configured to include a fire pump car body 3 and a proportioner 5. The proportioner (a device for mixing water and fire extinguishing agent) 5 is a device that mixes water 7 and class A agent 9 or class B agent 11 at a fixed ratio to create an air foam aqueous solution.

[0020] As shown in FIG. 2, the proportioner 5 comprises a water / chemical mixer 13, a flow meter 15, a class A chemical control valve 17, a class B chemical control valve 19, and a control device 21.

[0021] The water / chemical mixing section 13 is a device that mixes the water 7 with the class A chemical 9, or mixes the water 7 with the class B chemical 11. That is, the water / chemical mixing section 13 has both a function of mixing the water 7 with the class A chemical 9 and a function of mixing the water 7 with the class B chemical 11. As the water / chemical mixing section 13, for example, a pump proportioner type mixer is used.

[0022] The flow meter 15 measures the flow rate of the water 7. The class A chemical control valve 17 is a valve that controls the amount of the class A chemical 9 supplied to the water / chemical mixing section 13. The class B chemical control valve 19 is a valve that controls the amount of the class B chemical 11 supplied to the water / chemical mixing section 13.

[0023] The control device 21 controls the class A chemical control valve 17 or the class B chemical control valve 19 in response to the flow rate of the water 7 measured by the flow meter 15 so that the mixing ratio of the class A chemical 9 or the class B chemical 11 to the water 7 becomes a predetermined mixing ratio.

[0024] As the class A chemical 9, for example, a class A chemical 9 manufactured by Nippon Dry Chemical Co., Ltd. and having the product names "Green Parking Foam" and "GreenWet" is adopted. As the class B chemical 11, for example, a class B chemical 11 manufactured by Nippon Dry Chemical Co., Ltd. and having the product name "Green Alcoace" is adopted.

[0025] Water 7 mixed with Class A agent 9 is used to extinguish A fires (wood fires, etc.). Water 7 mixed with Class B agent 11 is used to extinguish B fires (oil fires, etc.).

[0026] The proportioner 5 also includes a mixing ratio setting unit 23 for setting the mixing ratio of the class A chemical 9 to the water 7 to a predetermined mixing ratio, and for setting the mixing ratio of the class B chemical 11 to a predetermined mixing ratio. The control device 21 controls the class A chemical control valve 17 or the class B chemical control valve 19 so that the predetermined mixing ratio set by the mixing ratio setting unit 23 is achieved.

[0027] The mixture ratio setting unit 23 includes a display unit 25 that is configured with an LCD or the like and displays an image, and an operation switch (e.g., a push button switch; not shown) that is provided in the vicinity of the display unit 25 separately from the display unit 25. The predetermined mixture ratio is set by operating the operation switch corresponding to the display screen of the display unit 25 (pressing the operation switch as appropriate). The operation switch may be configured with a touch panel. Figs. 3 to 5 show the screens when the operation switch is configured with a touch panel.

[0028] For example, one of a plurality of predetermined mixing ratios is selected by the mixing ratio setting unit 23, and the selected mixing ratio is set by the mixing ratio setting unit 23.

[0029] In the proportioner 5, the mixing ratio value of the class B chemical 11 to the water 7 is greater than the mixing ratio value of the class A chemical 9 to the water. Also, the maximum mixing ratio value of the class B chemical 11 to the water 7 is 30 to 100 times, 50 to 70 times, 55 to 65 times, or 60 times the minimum mixing ratio value of the class A chemical 9 to the water 7.

[0030] As a further specific example, the mixing ratio value of class B chemical 11 to water 7 is one of 1.5%, 3%, and 6%, and the mixing ratio value of class A chemical 9 to water 7 is within the range of 0.1% to 1%. As a result, the maximum mixing ratio value of class B chemical 11 to water 7 (6%) is 60 times the minimum mixing ratio value of class A chemical 9 to water 7 (0.1%).

[0031] As shown in FIG. 1, a water tank 29 for storing water 7 is integrally installed on the fire pump truck main body 3, and a class B chemical tank 31 for storing class B chemical 11 is integrally installed on the fire pump truck main body 3.

[0032] The class A chemical 9 is stored in a class A chemical tank (for example, a hand-held plastic container for chemical liquid) 33 that is not integrated with the fire pump vehicle body 3. The class A chemical tank 33 may be configured to be installed integrally with the fire pump vehicle body 3, similar to the class B chemical tank 31.

[0033] 2 and other drawings, the fire pump vehicle body 3 is provided with piping 39 connecting the water inlet 35 and the water outlet 37. The water inlet 35 is connected to a hose (not shown) that extends to a water source (not shown) separate from the water 7 in the water tank 29. The water outlet 37 is connected to a hose (not shown) that discharges water, etc. toward the fire point.

[0034] A water pump 41 is provided at a position midway along piping 39, which pumps water sucked in from suction port 35 to discharge port 37. A check valve 43 is provided at the discharge port of water pump 41. A section 45 of piping 39 between suction port 35 and water pump 41 is connected to the water tank 29 by piping 47. This allows water 7 to be supplied to the water pump 41 from the water tank 29, in addition to the other water sources mentioned above. A water tank suction valve 49 is provided midway along piping 47. The water tank suction valve 49 opens and closes the flow path of piping 47.

[0035] A flow meter 15 is provided in a portion of the piping 39 between the check valve 43 and the water outlet 37. The flow meter 15 measures the flow rate of water or the like (a mixture of water and a Class A chemical, or a mixture of water and a Class B chemical) exiting the water outlet 37.

[0036] The flow meter 15 may be provided between a portion 51 (to be described later) and a check valve 43 to measure the flow rate of the water 7 coming out of the water pump 41. The flow meter 15 may be provided between a portion 45 and a portion 53 (to be described later) to measure the flow rate of the water 7 entering the water pump 41.

[0037] A portion 51 of the piping 39 between the check valve 43 and the flowmeter 15 and a portion 53 of the piping 39 between the portion 45 and the water pump 41 are connected by a piping 55. A mixing valve 57 and an ejector (mixer) 59 constituting the water / chemical mixing section 13 are provided midway along the piping 55. The mixing valve 57 is provided on the portion 51 side, and the ejector 59 is provided on the portion 53 side. The ejector 59 sucks in the class A chemical 9 or the class B chemical 11 by using the water 7 sprayed at high speed, and mixes the water 7 with the class A chemical 9 or the class B chemical 11.

[0038] As the water 7 to be mixed with the class A chemical 9 or class B chemical 11, at least one of the water 7 stored in the water tank 29 and the water 7 sucked from the water inlet 35 is used. That is, only the water 7 stored in the water tank 29 is used for mixing with the class A chemical 9 or class B chemical 11, or only the water 7 sucked from the water inlet 35 is used for mixing with the class A chemical 9 or class B chemical 11. Furthermore, both the water 7 stored in the water tank 29 and the water 7 sucked from the water inlet 35 are used for mixing with the class A chemical 9 or class B chemical 11. In addition, the water 7 sucked from the water inlet 35 can be river water, water from a reservoir, water from a lake, or the like.

[0039] Mixing valve 57 opens (fully open) or closes (fully closed) the flow path of piping 55. When water pump 41 is operating, mixing valve 57 opens the flow path of piping 55, allowing water, etc. to flow through piping 55 from part 51 to part 53. Mixing valve 57 closes the flow path of piping 55, blocking the flow of water, etc. through piping 55. In other words, only water 7 comes out of water outlet 37, without a mixture of water 7 and class A chemical or water 7 and class B chemical.

[0040] The class B chemical tank 31 and the ejector 59 are connected by a pipe 61. A check valve 63, a chemical tank suction valve 65, a flowmeter 67, and a mixing proportional valve (class B chemical control valve) 19 are provided in the middle of the pipe 61. The check valve 63, the chemical tank suction valve 65, the flowmeter 67, and the mixing proportional valve 19 are provided in this order from the class B chemical tank 31 toward the ejector 59.

[0041] The chemical tank suction valve 65 opens (fully open) or closes (fully closed) the flow path of the piping 61. When water 7 is flowing through the ejector 59 (piping 55), the chemical tank suction valve 65 opens the flow path of the piping 61 and appropriately opens the class B chemical control valve 19, causing the class B chemical 11 to flow through the piping 61 from the class B chemical tank 31 toward the ejector 59. When the chemical tank suction valve 65 closes the flow path of the piping 61, the flow of the class B chemical 11 through the piping 61 is blocked.

[0042] The flow meter 67 measures the flow rate of the class B chemical 11 flowing through the pipe 61. The class B chemical control valve 19 adjusts the flow rate of the class B chemical 11 flowing through the pipe 61. That is, the class B chemical control valve 19 adjusts the opening degree of this valve steplessly, thereby steplessly adjusting the flow rate of the class B chemical 11 supplied to the ejector 59.

[0043] The class A chemical tank 33 and a portion 69 of the piping 61 between the class B chemical control valve 19 and the ejector 59 are connected by a pipe 71. An external liquid suction valve 73, a flow meter 75, and a mixing proportional valve (class A chemical control valve) 17 are provided in the middle of the piping 71. The external liquid suction valve 73, the flow meter 75, and the class A chemical control valve 17 are provided in this order from the class A chemical tank 33 toward the portion 69.

[0044] The external suction valve 73 opens (fully open) or closes (fully closed) the flow path of the piping 71. When water 7 is flowing through the ejector 59, the external suction valve 73 opens the flow path of the piping 71 and appropriately opens the class A chemical control valve 17, causing the class A chemical 9 to flow through the piping 71 from the class A chemical tank 33 toward the ejector 59. When the external suction valve 73 closes the flow path of the piping 71, the flow of the class A chemical 9 through the piping 71 is blocked.

[0045] The flow meter 75 measures the flow rate of the class A chemical 9 flowing through the pipe 71. The control valve 17 for the class A chemical adjusts the flow rate of the class A chemical 9 flowing through the pipe 71. That is, the control valve 17 for the class A chemical adjusts the flow rate of the class A chemical 9 supplied to the ejector 59 in a stepless manner by steplessly adjusting the opening degree of this valve.

[0046] The portion of the piping 71 between the class A chemical tank 33 and the external suction valve 73 is a pickup hose. Also, what is indicated by reference numeral 77 in FIG. 2 is a throttle for setting the flow rate of water or the like discharged from the water discharge port 37.

[0047] The pump proportioner type mixer 13 is provided with a pipe (bypass) 55 that connects the discharge side part 51 and the suction side part 53 of the water pump 41 of the pressurized water supply device. A part of the discharge water of the water pump 41 is passed through an ejector 59 provided in the middle of the pipe 55. In addition, the amount of the class A chemical 9 supplied to the ejector 59 is adjusted using a control valve 17 for the class A chemical, or the amount of the class B chemical 11 supplied to the ejector 59 is adjusted using a control valve 19 for the class B chemical.

[0048] The control device 21 is configured to include, for example, a CPU and a memory (not shown). The control device 21 adjusts the aperture of the class B chemical control valve 19 according to the flow rate of water or the like measured by the flowmeter 15, and sets the value of the mixture ratio of the water 7 and the class B chemical 11 discharged from the water outlet 37 to a predetermined value such as 6%. The aperture of the class B chemical control valve 19 may be adjusted using the flow rate of water or the like measured by the flowmeter 15 and the flow rate of the class B chemical 11 measured by the flowmeter 67.

[0049] As in the case of class B chemical 11, control device 21 adjusts the aperture of class A chemical control valve 17 in accordance with the flow rate of water or the like measured by flowmeter 15, and sets the value of the mixture ratio of water 7 and class A chemical 9 discharged from water outlet 37 to a predetermined value such as 1%. Note that the aperture of class A chemical control valve 17 may be adjusted using the flow rate of water or the like measured by flowmeter 15 and the flow rate of class A chemical 9 measured by flowmeter 75.

[0050] When mixing class A chemical 9, the chemical tank suction valve 65 through which class B chemical 11 flows is closed, and when mixing class B chemical 11, the external suction valve 73 through which class A chemical 9 flows is closed.

[0051] Here, the operation of the chemical fire pump truck 1 will be described with reference to Fig. 3 to Fig. 7. In the initial state, the screen of the display unit 25 is as shown in Fig. 3. When "Mix Class A" is selected on the bottom right of the screen shown in Fig. 3 (step S1 in Fig. 6), the screen changes to that shown in Fig. 4 (the screen for mixing Class A chemicals).

[0052] Next, as shown in Fig. 6, the pickup hose, which is the part of the piping 71 on the Class A chemical tank 33 side, is inserted into the chemical liquid polyethylene container 33 (S3), the external suction valve 73 is opened (S5), and the mixing ratio of the water 7 and the Class A chemical 9 is set on the screen shown in Fig. 4 (S7). Next, the "mixing start" switch (not shown) is pressed to start the automatic mixing operation (S9), and the amount of water discharged is adjusted with the throttle 77 (S11). The amount of water discharged is adjusted within a range of, for example, 100 L / min to 2100 L / min.

[0053] When "Mixing Class B" is selected on the bottom right of the screen shown in FIG. 3 (step S21 in FIG. 7), the screen changes to that shown in FIG. 5 (the screen for mixing class B medicines).

[0054] Next, as shown in Fig. 7, the mixing ratio of water 7 and class B chemical 11 is set on the screen shown in Fig. 5 (S23). The mixing ratio is selected from, for example, 1.5%, 3%, and 6%. Next, a "mixing start" switch (not shown) is pressed to start automatic mixing operation (S25), and the amount of water discharged is adjusted with throttle 77 (S27). The amount of water discharged is adjusted within a range of, for example, 400 L / min to 2100 L / min.

[0055] In the proportioner 5, the control device 21 controls the class A chemical control valve 17 or the class B chemical control valve 19 according to the flow rate of water or the like measured by the flowmeter 15 so that the mixture ratio of the class A chemical 9 or the class B chemical 11 to the water 7 becomes a predetermined mixture ratio. That is, the class A chemical control valve 17 is used to set the supply amount of the class A chemical 9, and the class B chemical control valve 19, which is different from the class A chemical control valve 17, is used to set the supply amount of the class B chemical 11. This allows the water 7 and the class A chemical 9 to be mixed, and the water 7 and the class B chemical 11 to be mixed in one water / chemical mixing section 13 (one ejector 59) even if there is a large difference in the value of the mixture ratio. In addition, since only one ejector 59 is provided to configure the water / chemical mixing section 13, the configuration is simplified and costs can be suppressed.

[0056] In addition, in the proportioner 5, a pump proportioner type mixer is used as the water / chemical mixer 13. This makes it possible to obtain an appropriate mixing ratio between the water 7 and the class A chemical 9 and between the water 7 and the class B chemical 11, even if there is a large difference between the mixing ratio values ​​of the water 7 and the class A chemical 9 and the mixing ratio values ​​of the water 7 and the class B chemical 11.

[0057] The proportioner 5 is also provided with a mixture ratio setting unit 23 for setting a predetermined mixture ratio. This allows mixing of the water 7 and the class A chemical 9 at a predetermined mixture ratio, or mixing of the water 7 and the class B chemical 11 at a predetermined mixture ratio, to be performed with a single touch, improving operability.

[0058] Furthermore, in the proportioner 5, the mixture ratio setting unit 23 is provided with a display unit 25 and an operation switch provided near the display unit 25. This makes it easy to set the mixture ratio even when wearing gloves.

[0059] Furthermore, in the proportioner 5, the maximum value of the mixing ratio of the class B chemical 11 to the water 7 is set to 30 to 100 times the minimum value of the mixing ratio of the class A chemical 9 to the water 7. This makes it possible to obtain an appropriate mixing ratio according to the specifications of the class A chemical 9 and the class B chemical 11.

[0060] In addition, since the chemical fire pump truck 1 is equipped with a proportioner 5, appropriate firefighting activities can be carried out at the fire scene for B fires and A fires.

[0061] In addition, the water tank 29 and the class B chemical agent tank 31 are always installed in the chemical fire pump car 1. This allows firefighting activities to be carried out for the B fire, and also for the A fire, using only water 7 as the extinguishing agent. In addition, the class A chemical agent is stored in the class A chemical agent tank 33 that is not integrated with the fire pump car body 3, so the configuration of the chemical fire pump car 1 is simplified.

[0062] The proportioner 5 described above is an example of a proportioner having a water / chemical mixing section that mixes the water and the class A chemical or the class B chemical so that the mixture ratio of the water and the class A chemical or the class B chemical becomes a predetermined mixture ratio, a class A chemical control valve that controls the amount of the class A chemical supplied to the water / chemical mixing section, and a class B chemical control valve that controls the amount of the class B chemical supplied to the water / chemical mixing section.

[0063] Although the present embodiment has been described above, the present embodiment is not limited to this, and various modifications are possible within the scope of the gist of the present embodiment. [Explanation of symbols]

[0064] 1. Chemical fire pump truck 3. Fire pump vehicle body 5 Proportioner 7 water 9 Class A Drugs 11 Class B Drugs 13 Water / chemical mixing section 15 Flow meter 17 Class A Chemical Control Valves 19 Class B Drug Control Valves 21 Control device 23 Mixing ratio setting section 25 Display section 29 Water Tank 31 Class B Chemical Tank

Claims

1. A water / chemical mixing section for mixing water with a class A chemical or a class B chemical; A flow meter for measuring the flow rate of the water; A class A chemical control valve for controlling the amount of the class A chemical supplied to the water / chemical mixing section; A class B chemical control valve for controlling the amount of the class B chemical supplied to the water / chemical mixing section; a control device that controls the class A chemical control valve or the class B chemical control valve in response to the flow rate of the water measured by the flow meter so that a mixture ratio of the class A chemical or the class B chemical to the water becomes a predetermined mixture ratio; A proportioner having the above.

2. 2. A proportioner as set forth in claim 1, wherein said water / chemical mixing section is a pump proportioner type mixer.

3. 2. A proportioner as described in claim 1, further comprising a mixing ratio setting unit for setting the predetermined mixing ratio, and wherein the control device is configured to control the class A chemical control valve or the class B chemical control valve so as to achieve the predetermined mixing ratio set by the mixing ratio setting unit.

4. 4. The proportioner according to claim 3, wherein the mixture ratio setting section includes a display section and an operation switch provided in the vicinity of the display section, and the predetermined mixture ratio is set by operating the operation switch.

5. 2. The proportioner of claim 1, wherein the maximum ratio value of said Class B chemical to said water is 30 to 100 times the minimum ratio value of said Class A chemical to said water.

6. The fire pump car body, A proportioner according to any one of claims 1 to 5, which is mounted on the fire pump vehicle body; A chemical fire pump truck.

7. A water tank installed on the fire pump vehicle body and storing the water; A class B agent tank installed on the fire pump vehicle body and containing the class B agent; 7. The chemical fire pump vehicle according to claim 6, further comprising:

8. a water / chemical mixing unit that mixes the water with the class A chemical or the class B chemical so that the mixing ratio of the water with the class A chemical or the class B chemical becomes a predetermined mixing ratio; A class A chemical control valve for controlling the amount of the class A chemical supplied to the water / chemical mixing section; A class B chemical control valve for controlling the amount of the class B chemical supplied to the water / chemical mixing section; A proportioner having the above.

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