CN221618462U - Foam proportion calibration metering device for fire truck - Google Patents
Foam proportion calibration metering device for fire truck Download PDFInfo
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- CN221618462U CN221618462U CN202322812870.6U CN202322812870U CN221618462U CN 221618462 U CN221618462 U CN 221618462U CN 202322812870 U CN202322812870 U CN 202322812870U CN 221618462 U CN221618462 U CN 221618462U
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- 239000006260 foam Substances 0.000 title claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 104
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
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Abstract
A foam proportion calibration metering device for a fire truck comprises a flow measuring device, a fire truck vehicle-mounted water pump, a metering barrel and a foam proportion mixer; the metering barrel is provided with scales; the fire truck-mounted water pump is connected to the flow measuring device; when water is added into the metering barrel, a water outlet of the vehicle-mounted water pump of the fire engine is communicated with the metering barrel; and when the water in the metering barrel is sucked to scale the foam proportion, the foam proportion mixer is communicated with the water outlet of the vehicle-mounted water pump of the fire engine and the water outlet of the metering barrel. Compared with the prior art, the foam proportion calibration metering device has the advantages of simple pipeline structure, convenience in assembly and convenience in foam proportion recalibration.
Description
Technical Field
The utility model belongs to the technical field of fire engines, and particularly relates to a foam proportion calibrating and metering device for a fire engine.
Background
The existing fire-extinguishing foam fire-fighting vehicles are all provided with a class A foam proportion mixer or a class B foam proportion mixer, and other fire-fighting vehicles are all provided with class AB foam proportion mixers. These mixers are all commissioned prior to shipment. However, after the fire engine is installed, the structure and the length of the foam pipeline are different from those of a laboratory due to the limitation of space, and the foam proportion needs to be calibrated again.
There are generally two calibration methods, the first being a weighing method: in the experiment, the foam tank of the fire truck is filled with water to replace foam liquid and is weighed, then the water tank is filled with water, the proportion of the mixer is adjusted to enable the fire truck water pump to run out water for a period of time, the residual water of the water tank is drained, the foam tank is weighed again, the foam flow is calculated, and finally the proportion is calculated, and the method needs to be used for weighing by adding water for many times, needs to use large-scale bearing equipment, and has the advantages of high cost, low efficiency and low foam proportion precision; moreover, the foam ratio is initially a large deviation from the measured value of operational instability and the process is too complex. The second method is a flowmeter calibration method: the foam mixer is connected into a certain container, external pressure water is used for supplying water to the container through a flow measuring test tube, the fire engine is connected into a pump flow test platform and operates a fire pump and a foam proportion mixer, the water level of the container is kept unchanged, the flow measuring test tube displays flow which is the suction flow of the foam proportion mixer, and then whether the foam proportion is accurate is obtained through calculation.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art and provides a foam proportion calibrating and metering device for a fire engine.
In order to achieve the purpose, the utility model discloses a foam proportion calibrating and metering device for a fire engine, which comprises a flow measuring device, a fire engine vehicle-mounted water pump, a metering barrel and a foam proportion mixer; the metering barrel is provided with scales; the fire truck-mounted water pump is connected to the flow measuring device; when water is added into the metering barrel, a water outlet of the vehicle-mounted water pump of the fire engine is communicated with the metering barrel; and when the water in the metering barrel is sucked to scale the foam proportion, the foam proportion mixer is communicated with the water outlet of the vehicle-mounted water pump of the fire engine and the water outlet of the metering barrel.
Preferably, the metering barrel is provided with a transparent rubber tube, one end of the transparent rubber tube is communicated with the bottom of the metering barrel, and the other end of the transparent rubber tube extends to the top of the metering barrel and is communicated with the outside.
Preferably, a 0 scale mark is carved on the metering barrel, and a first distance for avoiding errors caused by unstable operation when the operation just begins to calibrate the foam proportion is reserved between the 0 scale mark and the top of the metering barrel.
Preferably, a blocking piece is arranged between the metering barrel and the foam proportion mixer and/or between the metering barrel and the vehicle-mounted water pump of the fire truck.
Further preferably, the blocking member is a ball valve.
Further preferably, the measuring cup with graduation marks is further included.
Preferably, the foam proportional mixer further comprises a water storage part, and the flow measuring device and the water outlet of the foam proportional mixer are communicated with the water storage part.
Compared with the prior art, the utility model has the beneficial effects that: when the foam proportion calibration metering device is used for re-calibrating the foam proportion, the vehicle-mounted water pump of the fire engine is used for filling water into the metering barrel, and then the water adding is stopped. Then, the foam proportion mixer is operated, the water is input into the foam proportion mixer by the vehicle-mounted water pump of the fire engine, at the moment, the foam proportion mixer absorbs the water in the metering barrel, and at the end, the volume of the water input into the foam proportion mixer by the vehicle-mounted water pump of the fire engine is obtained through the flow measuring device, the volume of the water in the metering barrel is obtained through the scale mark on the metering barrel, the proportional relation between the water and the foam is combined, and finally the foam proportion is rescaled. The foam proportion calibrating and measuring device is simple to operate and beneficial to providing the use efficiency. In addition, the pipeline structure of the foam proportion calibration metering device is simple, and the device is convenient to install with a fire truck to recalibrate the foam proportion.
Drawings
FIG. 1 is a schematic perspective view of a metering barrel of a foam proportional calibration metering device for a fire truck according to the present utility model;
A metering barrel 1; a water inlet pipe 2; a water outlet pipe 3; a transparent rubber tube 4; a blocking member 5; and a pulley 6.
Detailed Description
In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and include, for example, either fixedly attached, detachably attached, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The technical scheme of the utility model is further described below with reference to fig. 1.
A foam proportion calibrating and metering device for a fire truck comprises a flow measuring device (not shown in the figure), a fire truck on-board water pump (not shown in the figure), a metering barrel 1 and a foam proportion mixer (not shown in the figure). The fire truck-mounted water pump is connected to the flow measuring device; referring to fig. 1, a water inlet pipe 2 and a water outlet pipe 3 are arranged on a metering barrel 1, and a water outlet of a vehicle-mounted water pump of a fire engine is communicated with the water inlet pipe 2 of the metering barrel 1, so that water can be added into the metering barrel 1; the foam proportion mixer is communicated with the water outlet of the vehicle-mounted water pump of the fire engine and the water outlet of the water outlet pipe 3 of the metering barrel 1, so that water can be input into the foam proportion mixer in the measuring process and the water in the metering barrel 1 can be sucked at the same time; the metering barrel 1 is also provided with scales.
When the foam proportion is calibrated again, the foam proportion calibrating and metering device of the embodiment firstly fills water into the metering barrel 1 through the vehicle-mounted water pump of the fire engine, and then stops adding water. Then, the foam proportion mixer is operated, the water is input into the foam proportion mixer by the vehicle-mounted water pump of the fire engine, at the moment, the foam proportion mixer absorbs the water in the metering barrel 1, and at the end, the volume of the water input into the foam proportion mixer by the vehicle-mounted water pump of the fire engine is obtained through the flow measuring device, the volume of the water in the metering barrel 1 is obtained through the scale mark on the metering barrel 1, the proportional relation between the water and the foam is combined, and finally the foam proportion is re-calibrated. The foam proportion calibrating and measuring device is simple to operate and beneficial to providing the use efficiency. In addition, the pipeline structure of the foam proportion calibration metering device is simple, and the device is convenient to install with a fire truck to recalibrate the foam proportion.
The flow measuring device, the fire truck-mounted water pump and the foam proportion mixer are existing products purchased from the market, and the structure of the flow measuring device, the fire truck-mounted water pump and the foam proportion mixer is not described herein.
In this embodiment, referring to fig. 1, a transparent rubber tube 4 is provided on the metering barrel 1, one end of the transparent rubber tube 4 is communicated with the bottom of the metering barrel 1, the other end of the transparent rubber tube 4 extends to the top of the metering barrel 1 and is communicated with the outside, and scales on the metering barrel 1 can be on the transparent hose. Through setting up transparent rubber tube 4, be convenient for carve out the scale mark, also be convenient for observe the water level in the measurement bucket 1 simultaneously.
In this embodiment, the transparent rubber tube 4 is engraved with a 0 scale mark, and a first distance for avoiding errors caused by unstable operation when the operation just begins to calibrate the foam proportion is present between the 0 scale mark and the top of the metering barrel 1. In particular, the distance may be determined from the measured volume of the vehicle, the metering drum 1. Through locating 0 scale mark to be less than the top of measuring bucket 1, when starting to mark the foam proportion, not calculate the volumetric flow of water earlier, when the liquid level with 0 scale mark, begin the measurement, foam proportion blender operation is stable this moment to avoid measuring error.
In this embodiment, referring to fig. 1, a blocking member 5 is provided between the metering barrel 1 and the foam proportioner and between the metering barrel 1 and the on-board water pump of the fire truck, and specifically, the blocking member 5 is a ball valve. When there is no need to feed water into the metering drum 1, the blocking member 5 is closed, and when there is a need to feed water into the metering drum 1, the ball valve is opened. Similarly, when the foam proportioner absorbs water into the metering barrel 1, the ball valve is opened, and when the foam proportioner does not need to absorb water into the metering barrel 1, the blocking piece 5 is closed.
In this embodiment, the foam proportion calibration metering device further comprises a measuring cup with scale marks, specifically, the measuring cup is a measuring cup with 5 liters of scale marks, the measuring cup is used for marking scale marks on the transparent rubber tube 4 when the metering barrel 1 discharges water, specifically, the method is that a bottom ball valve is opened, water is put into the measuring cup, the ball valve is closed after 5 liters of water are put into the liquid surface of the measuring cup, at the moment, a liquid surface position line is marked on the transparent tube, namely, 5 liters of water flows out from the barrel, the scale marks are sequentially marked on the transparent rubber tube 4 every 5 liters of water until the water is marked on the bottom of the barrel, the capacity reaches 300L, and the fire truck foam proportion calibration metering barrel 1 is manufactured after 3 times of calibration process. The transparent rubber tube 4 is carved on the through cup, so that the requirement on the metering barrel 1 is reduced, and the cost of the metering barrel 1 is reduced.
In this embodiment, the foam proportion calibration metering device further comprises a water storage part, and the flow measurement device and the water outlet of the foam proportion mixer are communicated to the water storage part, so that water circulation in the metering device is realized, and the water level in the water storage part is not changed.
In this embodiment, referring to fig. 1, a pulley 6 is installed at the bottom of the metering barrel 1, which is advantageous in changing the position of the metering barrel 1, so that it has a certain flexibility and facilitates water connection.
It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.
Claims (7)
1. A foam proportion calibration metering device for fire engine, its characterized in that: the device comprises a flow measuring device, a vehicle-mounted water pump of the fire engine, a metering barrel and a foam proportion mixer; the metering barrel is provided with scales; the fire truck-mounted water pump is connected to the flow measuring device; when water is added into the metering barrel, a water outlet of the vehicle-mounted water pump of the fire engine is communicated with the metering barrel; and when the water in the metering barrel is sucked to scale the foam proportion, the foam proportion mixer is communicated with the water outlet of the vehicle-mounted water pump of the fire engine and the water outlet of the metering barrel.
2. The foam proportioning metering device for a fire engine of claim 1, wherein: the metering barrel is provided with a transparent rubber tube, one end of the transparent rubber tube is communicated with the bottom of the metering barrel, and the other end of the transparent rubber tube extends to the top of the metering barrel and is communicated with the outside.
3. The foam proportioning metering device for a fire engine of claim 1, wherein: the metering barrel is carved with 0 scale mark, there is the first distance that is used for avoiding work just when starting to mark the foam proportion because of the unstable error that brings of work between 0 scale mark with the top of metering barrel.
4. The foam proportioning metering device for a fire engine of claim 1, wherein: and a blocking piece is arranged between the metering barrel and the foam proportion mixer and/or between the metering barrel and the vehicle-mounted water pump of the fire truck.
5. The foam proportioning metering device for a fire engine of claim 4, wherein: the blocking piece is a ball valve.
6. The foam proportioning metering device for a fire engine of claim 4, wherein: the measuring cup with scale marks is also included.
7. The foam proportioning metering device for a fire engine of claim 1, wherein: the foam proportional mixer further comprises a water storage part, and the flow measuring device and the water outlet of the foam proportional mixer are communicated to the water storage part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322812870.6U CN221618462U (en) | 2023-10-19 | 2023-10-19 | Foam proportion calibration metering device for fire truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322812870.6U CN221618462U (en) | 2023-10-19 | 2023-10-19 | Foam proportion calibration metering device for fire truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221618462U true CN221618462U (en) | 2024-08-30 |
Family
ID=92483491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322812870.6U Active CN221618462U (en) | 2023-10-19 | 2023-10-19 | Foam proportion calibration metering device for fire truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221618462U (en) |
-
2023
- 2023-10-19 CN CN202322812870.6U patent/CN221618462U/en active Active
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