CN207420883U - For the self-suction system of vehicular fire pump - Google Patents
For the self-suction system of vehicular fire pump Download PDFInfo
- Publication number
- CN207420883U CN207420883U CN201721404064.3U CN201721404064U CN207420883U CN 207420883 U CN207420883 U CN 207420883U CN 201721404064 U CN201721404064 U CN 201721404064U CN 207420883 U CN207420883 U CN 207420883U
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- China
- Prior art keywords
- fire pump
- water
- ejector
- level relay
- solenoid valve
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Abstract
The utility model is related to a kind of self-suction systems for vehicular fire pump, including level relay, gas cylinder and ejector, the gas outlet of the gas cylinder is connected by pipeline with the air inlet of ejector, the water outlet of the ejector is connected with the water inlet of fire pump, for the water inlet of the ejector for connecting water source, the pipeline between the gas outlet of the gas cylinder and the air inlet of ejector is equipped with solenoid valve；The level relay is equipped with water level sensor, and the water level sensor is mounted on the water inlet of fire pump, and the normal-closed end of the level relay is concatenated with the control switch of solenoid valve, and the normally open end of the level relay is concatenated with the starting switch of fire pump；During the work time, when the water level sensor senses medium, the level relay action simultaneously closes off the solenoid valve so as to start fire pump.The utility model is needed in advance when can remove vehicular fire-fighting pump startup to complex operations such as fire pump inside filling water.
Description
Technical field
The utility model is related to a kind of self-suction systems for vehicular fire pump, belong to Fire Fighting Pumps technical field.
Background technology
In the prior art, when fire pump needs water suction, the solid water of fire pump is generally required, is formed in pump chamber
Closed environment, then pump operating could generate negative pressure, with then reaching the mesh of water suction, and it is additional generally on the pump housing in the market
Increase small water tank come the pump priming that feeds water, so operation is not only complicated, but also dehumanization, increases cost of labor, and efficiency is low.
The content of the invention
The purpose of this utility model is that：It proposes to need when one kind can remove vehicular fire-fighting pump startup from advance into fire pump
The self-suction system of the complex operations such as portion's filling water.
In order to solve the above-mentioned technical problem, the utility model proposes technical solution be：One kind is used for vehicular fire pump
Self-suction system, including level relay, gas cylinder and ejector, air inlet that the gas outlet of the gas cylinder passes through pipeline and ejector
Mouth connection, the water outlet of the ejector are connected with the water inlet of fire pump, and the water inlet of the ejector is used to connect water source,
Pipeline between the gas outlet of the gas cylinder and the air inlet of ejector is equipped with solenoid valve；The level relay is equipped with water
Level sensor, the water level sensor are mounted on the water inlet of fire pump, the normal-closed end and solenoid valve of the level relay
Concatenation, the normally open end of the level relay is concatenated with the starting switch of fire pump；During the work time, when the level sensor
When device senses medium, the level relay action carries out water suction work so as to start fire pump, simultaneously closes off the electromagnetism
Valve makes the compressed air in gas cylinder stop ventilating to ejector.
When in use, the gas cylinder provides source of the gas, is used for controlling opening into the compressed gas of ejector by solenoid valve
With pass, when compressed gas enters in ejector, supersonic flow is ejected in the nozzle out of ejector, due to gluing for gas
Property, high-speed flow, which is swept away, sucks indoor air, so as to suck indoor formation vacuum, due to the presence of vacuum, and then Jie
In matter sucking water pump, when level relay acts, you can start fire pump and complete self-suction function, and then normally absorb water.This reality
, need not be therefore easy to operate again toward the solid water of fire pump with new when fire pump needs water suction, and very
Hommization reduces cost of labor.
Being further improved for above-mentioned technical proposal be：It is serially connected on pipeline between the gas outlet of the gas cylinder and solenoid valve
Pneumatic bigeminy part, for separating the compressed air aqueous vapor in pipeline.
The further improvement of above-mentioned technical proposal is：The fire pump the pump housing be equipped with and the level relay
The indicator light that is connected of normally open end, level relay is acted when water level sensor senses medium, and indicator light brightens.
Description of the drawings
The utility model will be further described below with reference to the accompanying drawings.
Fig. 1 is the structural schematic block diagram of the utility model embodiment.
Fig. 2 is the structure diagram of ejector in the utility model embodiment.
Specific embodiment
Embodiment
As depicted in figs. 1 and 2, the self-suction system for vehicular fire pump of the present embodiment, including level relay 11,
Gas cylinder 1 and ejector 4, gas cylinder 1 is mounted on the chassis of car body in the present embodiment, and the gas pressure of gas cylinder 1 is more than 0.6MP.Gas
The gas outlet of bottle 1 is connected by pipeline with the air inlet A of ejector 4, and the water outlet C of ejector 4 connects with the water inlet of fire pump 5
Logical, the water inlet B of ejector 4 is connected with water source, and the pipeline between the gas outlet of gas cylinder 1 and the air inlet A of ejector 4 is equipped with
Solenoid valve 3.
Fire pump 5 uses centrifugal pump of single stage type in the present embodiment, and level relay 11 is equipped with water level sensor 9, and water level passes
Sensor 9 is mounted on the water inlet of fire pump 5, and the normal-closed end of level relay 11 is concatenated with the control switch 8 of solenoid valve 3, water
The position normally open end of relay 11 is concatenated with the starting switch 7 of fire pump 5；During the work time, when water level sensor 9 senses Jie
During matter, level relay 11 acts to be on switch 7, by starting diesel engine 6 fire pump 5 is driven to carry out water suction work
Make, while by the way that switch 8 is controlled to close solenoid valve 3, the compressed air in gas cylinder 1 is made to stop ventilating to ejector 4.
Ejector 4 is the prior art, and as can be seen from Figure 2, compressed air enters ejector 4 from air inlet A, from Laval nozzle
12 eject supersonic flow, are sprayed into mixing chamber 13, then from diffuser 14, due to the viscosity of gas, high-speed flow is swept away
The air in room 15 is sucked, so as to form vacuum in sucking room 15, due to the presence of vacuum, and then medium from water inlet B
Sucking.In addition, non-return valve is equipped at the water inlet B of ejector 4, water outlet C and air inlet A, for preventing medium back flow.
The present embodiment can also make following improve：1）Gas is serially connected on pipeline between the gas outlet of gas cylinder 1 and solenoid valve 3
Dynamic bigeminy part 2, for separating the compressed air aqueous vapor in pipeline.Pneumatic bigeminy part 2 is the prior art, and structure is no longer superfluous
It states.
2）The pump housing of fire pump 5 is equipped with the indicator light 10 being connected with the normally open end of level relay 11, works as level sensor
When device 9 senses medium, level relay 11 acts, and indicator light 10 brightens.
The utility model is not limited to the specific technical solution of above-described embodiment, in addition to the implementation, the utility model
There can also be other embodiment.All technical solutions formed using equivalent substitution or equivalent transformation, all fall within the utility model
It is required that protection domain.
Claims (3)
1. a kind of self-suction system for vehicular fire pump, it is characterised in that：Including level relay, gas cylinder and ejector,
The gas outlet of the gas cylinder is connected by pipeline with the air inlet of ejector, the water inlet of the water outlet and fire pump of the ejector
Mouth connection, the water inlet of the ejector is for connecting water source, between the gas outlet of the gas cylinder and the air inlet of ejector
Pipeline is equipped with solenoid valve；The level relay is equipped with water level sensor, and the water level sensor is mounted on fire pump
Water inlet, the normal-closed end of the level relay are concatenated with the control switch of solenoid valve, the normally open end of the level relay
It is concatenated with the starting switch of fire pump；During the work time, when the water level sensor senses medium, the water level relay
Device action simultaneously closes off the solenoid valve so as to start fire pump.
2. the self-suction system according to claim 1 for vehicular fire pump, it is characterised in that：The outlet of the gas cylinder
Pneumatic bigeminy part is serially connected on pipeline between mouth and solenoid valve, for separating the compressed air aqueous vapor in pipeline.
3. the self-suction system according to claim 1 for vehicular fire pump, it is characterised in that：The pump of the fire pump
Body is equipped with the indicator light being connected with the normally open end of the level relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721404064.3U CN207420883U (en) | 2017-10-27 | 2017-10-27 | For the self-suction system of vehicular fire pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721404064.3U CN207420883U (en) | 2017-10-27 | 2017-10-27 | For the self-suction system of vehicular fire pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207420883U true CN207420883U (en) | 2018-05-29 |
Family
ID=62309108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721404064.3U Active CN207420883U (en) | 2017-10-27 | 2017-10-27 | For the self-suction system of vehicular fire pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207420883U (en) |
-
2017
- 2017-10-27 CN CN201721404064.3U patent/CN207420883U/en active Active
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