CN206320081U - Vavuum pump for fire-fighting - Google Patents

Abstract

The utility model discloses a kind of vavuum pump for fire-fighting, including the pump housing, the pump housing is provided with interface, air inlet, first chamber, second chamber and more than two rank cavity rooms, the interface is connected with the first chamber, the air inlet is connected with the second chamber, more than two rank cavity rooms are arranged in a row, between the second chamber and the rank cavity room for coming first, between the two neighboring rank cavity room, come and be respectively equipped with jet pipe between the last rank cavity room and outside and connected with realizing, intercommunicating pore is respectively equipped between the first chamber and each rank cavity room, and the check valve for being used to prevent gas from entering first chamber via the intercommunicating pore is provided with the pump housing.Vavuum pump of the present utility model utilize compressed air formation jet current principle, vacuum capability is strong, performance is reliable, efficiently, and have the advantages that easy to install, small volume, low noise, without heating and vibrations, long lifespan, installation maintenance it is convenient.

Description

Vavuum pump for fire-fighting

Technical field

The utility model is related to fire-fighting domain, relates in particular to a kind of vavuum pump for fire-fighting.

Background technology

Fire engine water-pump is operationally, it is necessary to first vacuumize diversion, and water pump ability normal work, water circuit system is required to peace Fill vavuum pump, that is to say, that vavuum pump is the premise guarantee of fire pump normal work.

Fire fighting truck in the market uses conventional vacuum pump, and conventional vacuum pump is electronic vane pump principle, the pump Need to be equipped with a grease-box when mounted, and volume is big, work when bothered with heating and vibrations, maintenance, during work Manual pull diversion is wanted to switch, operation inconvenience.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of small volume, low noise, without heating and vibrations, performance It is reliable, efficient to be used for the vavuum pump of fire-fighting.

In order to solve the above-mentioned technical problem, the utility model is adopted the following technical scheme that：For the vavuum pump of fire-fighting, including The pump housing, the pump housing is provided with interface, air inlet, first chamber, second chamber and more than two rank cavity rooms, described to connect Mouth is connected with the first chamber, and the air inlet is connected with the second chamber, more than two rank cavity rooms It is arranged in a row, between the second chamber and the rank cavity room for coming first, between the two neighboring rank cavity room, arranges Jet pipe is respectively equipped between the last rank cavity room and outside to connect to realize, the first chamber and each rank are logical Intercommunicating pore is respectively equipped between chamber.

Further, each jet pipe is coaxially arranged.

Further, the internal diameter of each jet pipe gradually increases according to direction from inside to outside.

Further, the rank cavity room is provided with three.

Further, also including guiding valve, one end of the guiding valve has the first plug and stretched into the second chamber, institute Stating the other end of guiding valve has the second plug and stretches into the interface, and spring is cased with outside the guiding valve, and the spring is located at institute State in second chamber, when not ventilating, under the elastic force effect of the spring, first plug closes the air inlet, described Second plug disconnects the interface and the first chamber.

Further, being provided with the pump housing is used to prevent that gas from entering the unidirectional of first chamber via the intercommunicating pore Valve.

Further, the pump housing is made up of upper pump casing and lower pump body, and the interface and the first chamber are located at upper pump Body, the air inlet, the second chamber and more than two rank cavity rooms are located at lower pump body.

The utility model also provides a kind of fire fighting truck, including the above-mentioned vavuum pump for fire-fighting.

The beneficial effects of the utility model are embodied in：

Each jet pipe formation multi-stage jet tube, sprays at a high speed compressed gas using multi-stage jet tube, goes out in jet pipe in the utility model Mouth forms jet, produces volume and inhales and flows, under Involving velocity so that the air around nozzle exit is constantly sucked away, so that Realize vacuumizing for fire pump suction piping.

Vavuum pump of the present utility model utilizes the jet current principle of compressed air formation, vacuum capability is strong, performance can Lean on, efficiently, and have the advantages that easy to install, small volume, low noise, without heating and vibrations, long lifespan, install maintenance it is convenient.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding to of the present utility model, constitutes one of this specification Point, it is used to explain the utility model together with following embodiment, but do not constitute to restriction of the present utility model. In accompanying drawing：

Fig. 1 is the structural representation of the embodiment of the utility model one.

In accompanying drawing the mark of each part for：11 upper pump casings, 12 lower pump bodies, 21 interfaces, 22 air inlets, 23 intercommunicating pores, 3 first Chamber, 4 second chambers, 5 rank cavity rooms, 6 jet pipes, 7 check valves, 8 guiding valves, 81 first plugs, 82 second plugs, 83 springs.

Embodiment

The utility model is further described below in conjunction with the accompanying drawings：

Referring to Fig. 1, arrow represents gas flow in figure.

The vavuum pump for fire-fighting of the embodiment of the utility model one, including the pump housing, the pump housing are provided with interface 21, entered Gas port 22, first chamber 3, second chamber 4 and more than two rank cavity rooms 5, the interface 21 and the phase of first chamber 3 Connection, the air inlet 22 is connected with the second chamber 4, and more than two cavity rooms 5 of holding in the mouth are arranged in a row, and described the Between two chambers 4 and the rank cavity room 5 for coming first, between the two neighboring rank cavity room 5, come it is last described Jet pipe 6 is respectively equipped between rank cavity room 5 and outside to connect to realize, between the first chamber 3 and each rank cavity room 5 It is respectively equipped with intercommunicating pore 23.

In the present embodiment, each jet pipe 6 is coaxially arranged.So it is designed to ensure ventilation uniformity and throughput.

In the present embodiment, the internal diameter of each jet pipe 6 according to from inside to outside (obviously, come last rank cavity room with it is outer Jet pipe between portion is in outermost) direction gradually increase.So design so that differential pressure step by step increases, jet effect is brighter It is aobvious.In specific implementation, the rank cavity room 5 is provided with three, that is, disclosure satisfy that fire pump vacuumizes demand.

Being provided with the present embodiment, in the pump housing is used to prevent that gas from entering first chamber 3 via the intercommunicating pore 23 Check valve 7, improves vacuumizing effect.

In the present embodiment, also including guiding valve 8, one end of the guiding valve 8 has the first plug 81 and stretches into second chamber In room 4, the other end of the guiding valve 8 has the second plug 82 and stretched into the interface 21, and spring is cased with outside the guiding valve 8 83, the spring 83 is located in the second chamber 4, when not ventilating, and under the elastic force effect of the spring 83, described first blocks up The first 81 closure air inlet 22, second plug 82 disconnects the connection between the interface 21 and the first chamber 3.This It is simple in construction that utility model is set, and action is gentle, and the keying of air inlet, and interface and first chamber can be controlled simultaneously Between break-make.

In the present embodiment, the pump housing is made up of upper pump casing 11 and lower pump body 12, the interface 21 and the first chamber 3 Positioned at upper pump casing 11, the air inlet 22, the second chamber 4 and more than two rank cavity rooms 5 are located at lower pump body 12.Pump body design is easy to the installation of other parts into split type, and easy to maintenance.

The vavuum pump course of work of the present embodiment is as follows：Chassis of fire engine gas cylinder or the compressed gas for being individually equipped with gas cylinder It is connected with air inlet, the vacuum orifice of fire pump suction piping is connected with interface, comes between last rank cavity room and outside Jet pipe be empty；When open compressed gas control button after, guiding valve overcome under gas pressure the elastic force of spring gently open into Gas port, and interface is connected with first chamber, so that fire pump suction piping is connected with first chamber, due to high in each jet pipe Speed injection compressed gas, outside nozzle formation jet, produces volume and inhales flowing, then under Involving velocity so that nozzle exit week The gas enclosed is constantly sucked away, i.e. the air in fire pump suction piping is walked in suction so that have one in fire pump suction piping Fixed vacuum, so as to realize diversion.

In the process, check valve make it that gas can only be from first chamber flow direction rank cavity room and jet pipe, and compressed gas First chamber can not be flowed to, after meeting vacuum level requirements and realizing diversion, compressed gas control button is closed, guiding valve is in spring Gentle de-interfaced and first chamber, make that effective vacuum can be kept in suction piping in the presence of power.

Vavuum pump of the present utility model utilizes the jet current principle of compressed air formation, vacuum capability is strong, performance can Lean on, efficiently, there is easy to install, small volume, low noise, without heating and vibrations, long lifespan.

Vavuum pump of the present utility model can be integrated on fire fighting truck, can also individualism, be placed on fire fighting truck.

It should be understood that example as described herein and embodiment are not limited to the utility model only for explanation, this Art personnel can make various modifications or change according to it, all within spirit of the present utility model and principle, be made Any modifications, equivalent substitutions and improvements etc., should be included within protection domain of the present utility model.

Claims (8)

1. the vavuum pump for fire-fighting, it is characterised in that：Including the pump housing, the pump housing provided with interface (21), air inlet (22), First chamber (3), second chamber (4) and more than two ranks cavity room (5), the interface (21) and the first chamber (3) it is connected, the air inlet (22) is connected with the second chamber (4), more than two ranks cavity room (5) are lined up One row, between the second chamber (4) and the rank cavity room (5) for coming first, it is two neighboring it is described rank cavity room (5) it Between, come the last rank cavity room (5) and be respectively equipped with jet pipe (6) between outside and connected with realizing, the first chamber (3) it is respectively equipped with intercommunicating pore (23) between each rank cavity room (5).

2. it is used for the vavuum pump of fire-fighting as claimed in claim 1, it is characterised in that：Each jet pipe (6) is coaxially arranged.

3. it is used for the vavuum pump of fire-fighting as claimed in claim 1 or 2, it is characterised in that：The internal diameter of each jet pipe (6) according to Direction from inside to outside gradually increases.

4. it is used for the vavuum pump of fire-fighting as claimed in claim 1 or 2, it is characterised in that：Rank cavity room (5) is provided with three It is individual.

5. it is used for the vavuum pump of fire-fighting as claimed in claim 1 or 2, it is characterised in that：Also include guiding valve (8), the guiding valve (8) one end has the first plug (81) and stretched into the second chamber (4), and the other end of the guiding valve (8) has second Plug (82) is simultaneously stretched into the interface (21), is cased with spring (83) outside the guiding valve (8), and the spring (83) is located at described the In two chambers (4), when not ventilating, under the elastic force effect of the spring (83), first plug (81) closes the air inlet Mouth (22), second plug (82) disconnects the interface (21) and the first chamber (3).

6. it is used for the vavuum pump of fire-fighting as claimed in claim 1 or 2, it is characterised in that：Being provided with the pump housing is used to prevent Gas enters the check valve (7) of first chamber (3) via the intercommunicating pore (23).

7. it is used for the vavuum pump of fire-fighting as claimed in claim 1 or 2, it is characterised in that：The pump housing by upper pump casing (11) and Lower pump body (12) is constituted, and the interface (21) and the first chamber (3) are located at upper pump casing (11), the air inlet (22), institute State second chamber (4) and more than two ranks cavity room (5) are located at lower pump body (12).

8. fire fighting truck, it is characterised in that：Including the vavuum pump for fire-fighting any one of claim 1 to 7.