阅读说明：本技术 一种消防车用消防水泵 (Fire pump for fire engine ) 是由 李文 孙家瑞 于 2021-06-30 设计创作，主要内容包括：本发明涉及消防水泵技术领域,具体为一种消防车用消防水泵,包括安装在车体上的水泵本体,车体的尾部开设有与车体的两侧连通的水泵舱,水泵舱的内壁上安装有抽水管,所述水泵舱的底壁上开设有安装槽,所述水泵本体转动安装在安装槽内,所述安装槽和水泵本体之间设有角度固定机构,所述水泵本体包括旋转座,旋转座的底壁上设有转动插设在安装槽底壁上的中心插轴,所述旋转座上安装有活动座,活动座上安装有泵身,泵身的一端设有出水管,所述泵身的顶壁上竖直安装有进水管。本发明将消防水泵转动安装在消防车上,当车身方向无法调整时可以灵活地调整消防水泵的朝向,避免水管弯折,并且不会对水压造成影响,确保了救援工作的顺利展开。(The invention relates to the technical field of fire-fighting water pumps, in particular to a fire-fighting water pump for a fire engine, which comprises a water pump body arranged on a vehicle body, wherein a water pump cabin communicated with two sides of the vehicle body is arranged at the tail part of the vehicle body, a water pumping pipe is arranged on the inner wall of the water pump cabin, a mounting groove is arranged on the bottom wall of the water pump cabin, the water pump body is rotatably arranged in the mounting groove, an angle fixing mechanism is arranged between the mounting groove and the water pump body, the water pump body comprises a rotary seat, a central insertion shaft which is rotatably inserted on the bottom wall of the mounting groove is arranged on the bottom wall of the rotary seat, a movable seat is arranged on the rotary seat, a pump body is arranged on the movable seat, a water outlet pipe is arranged at one end of the pump body, and a water inlet pipe is vertically arranged on the top wall of the pump body. According to the invention, the fire pump is rotatably arranged on the fire truck, so that the orientation of the fire pump can be flexibly adjusted when the direction of the truck body cannot be adjusted, the water pipe is prevented from being bent, the water pressure is not influenced, and the smooth expansion of rescue work is ensured.)

1. The utility model provides a fire pump for fire engine, is including installing water pump body (5) on automobile body (1), and water pump cabin (2) with the both sides intercommunication of automobile body (1) are seted up to the afterbody of automobile body (1), install drinking-water pipe (3), its characterized in that on the inner wall of water pump cabin (2): the bottom wall of the water pump cabin (2) is provided with a mounting groove (4), the water pump body (5) is rotatably mounted in the mounting groove (4), and an angle fixing mechanism is arranged between the mounting groove (4) and the water pump body (5);

the water pump body (5) comprises a rotary seat (501), a central inserting shaft (502) which is rotatably inserted on the bottom wall of the mounting groove (4) is arranged on the bottom wall of the rotary seat (501), a movable seat (503) is arranged on the rotary seat (501), a pump body (504) is arranged on the movable seat (503), a water outlet pipe is arranged at one end of the pump body (504), a water inlet pipe (506) is vertically arranged on the top wall of the pump body (504), the end part of the water pumping pipe (3) is bent downwards and inserted at the top end of the water inlet pipe (506), the end part of the water pumping pipe (3) is coaxial with the central inserting shaft (502), the top end of the water inlet pipe (506) and the outer wall of the water pumping pipe (3) are both provided with flange plates (6), an annular air bag (10) sleeved on the water pumping pipe (3) is arranged between the two flange plates (6), a metal hose (9) is connected between the water pumping pipe (3) and the annular air bag (10).

2. The fire pump as claimed in claim 1, wherein: offer the spout with sliding seat (503) adaptation on the roof of roating seat (501), be equipped with the limiting plate on the lateral wall of sliding seat (503), set up the spacing groove with the limiting plate adaptation on the inner wall of spout, the one end that the outlet pipe was kept away from in sliding seat (503) is connected with a plurality of buffer spring (505) of installing on the spout inner wall.

3. The fire pump as claimed in claim 2, wherein: the bottom of inlet tube (506) is equipped with flexible section, flexible section is the bellows, two joint block is equipped with a plurality of fixture blocks (7) on ring flange (6).

4. The fire pump as claimed in claim 3, wherein: the clamping block (7) comprises a trapezoidal block (701), a bayonet (702) is formed in the front end of the trapezoidal block (701), a plurality of protrusions are arranged on the outer surface of one side, opposite to the flange plate (6), of the two flange plates, and a groove (703) matched with the protrusions is formed in the inner wall of the bayonet (702).

5. The fire pump as claimed in claim 1, wherein: be equipped with necking down portion (8) on drinking-water pipe (3), the one end of metal collapsible tube (9) is connected on necking down portion (8).

6. The fire pump as claimed in claim 1, wherein: angle fixed establishment inserts electromagnetism card pole (11) of establishing on mounting groove (4) diapire and sets up three fixed orifices (12) on roating seat (501) diapire including the activity, electromagnetism card pole (11) and fixed orifices (12) mutually support, and three fixed orifices (12) are 90 degrees for the radian distance of central plug axle (502), every all install magnet piece (13) on the roof of fixed orifices (12), and when electromagnetism card pole (11) circular telegram, magnet piece (13) repel each other with electromagnetism card pole (11).

7. The fire pump as claimed in claim 6, wherein: the electromagnetic clamping rod (11) is composed of an electromagnet (1101) and two round rods (1102), the two round rods (1102) are connected to two ends of the electromagnet (1101) respectively, the outer diameter of the electromagnet (1101) is smaller than the outer diameters of the two round rods (1102), and the end portions of the round rods (1102) are chamfered.

Technical Field

The invention relates to the technical field of fire-fighting water pumps, in particular to a fire-fighting water pump for a fire engine.

Background

The fire pump is a special fire pump or a common clear water pump which reaches the national standard GB6245 fire pump performance requirements and test methods. Most of the fire-fighting water sources provide fire-fighting water, which needs a fire-fighting water pump to pressurize so as to meet the requirements on water pressure and water quantity during fire extinguishing.

The water pump device of the fire engine comprises a connecting seat, wherein an open-source single chip microcomputer and a first stepping motor are respectively installed at the top of the connecting seat, the top of the connecting seat is connected with a pump shell through a supporting frame, the top of the connecting seat is connected with a water diversion tank through a supporting rod, a water inlet pipe is communicated with the side face of the water diversion tank, a water outlet pipe is communicated with the side face of the pump shell, a metering device is installed on the water outlet pipe, and the pump shell is rotatably connected with an impeller through a first rotating mechanism.

The above patents have certain problems in use: because the length of fire engine is generally great, when putting out a fire, is subject to parking position, and the outlet pipe of fire pump can't accurately be towards the conflagration position, and above-mentioned patent and most fire pump of present stage are fixed mounting on the fire engine, and the orientation of water pump can't change, consequently can lead to the pipeline to form under this kind of situation to twist reverse, has not only influenced water pressure, still damages the water pipe easily, has influenced rescue efficiency.

Therefore, the fire pump for the fire engine is provided.

Disclosure of Invention

The invention aims to provide a fire pump for a fire engine, which can flexibly adjust the orientation of the fire pump when the direction of an engine body cannot be adjusted by rotatably installing the fire pump on the fire engine, so that a water pipe is prevented from being bent, the water pressure is not influenced, and the smooth expansion of rescue work is ensured.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a fire pump for fire engine, is including installing the water pump body on the automobile body, and the afterbody of automobile body sets up the water pump cabin with the both sides intercommunication of automobile body, installs the drinking-water pipe on the inner wall in water pump cabin, the mounting groove has been seted up on the diapire in water pump cabin, the water pump body rotates and installs in the mounting groove, be equipped with angle fixing mechanism between mounting groove and the water pump body.

The water pump body includes the roating seat, is equipped with on the diapire of roating seat to rotate to insert and establish the center on the mounting groove diapire and inserts the axle, install the sliding seat on the roating seat, install the pump body on the sliding seat, the one end of pump body is equipped with the outlet pipe, vertically install the inlet tube on the roof of pump body, the tip of drinking-water pipe is buckled downwards and is inserted and establish on the top of inlet tube, and the tip of drinking-water pipe is coaxial with the center plug-in shaft, all be equipped with the ring flange on the top of inlet tube and the outer wall of drinking-water pipe, two be equipped with the annular gasbag that the cover was established on the drinking-water pipe between the ring flange, be connected with metal collapsible tube between drinking-water pipe and the annular gasbag.

Because a gap exists between the water pumping pipe and the water inlet pipe, water is easy to leak at the gap under high water pressure after the water pump is started. Set up annular gasbag between two ring flanges, after the water pump opened, water pressure can make rivers get into in the annular gasbag with its inflation, the annular gasbag consequently with the space seal between two ring flanges, make rivers unable outflow, realized then sealed to gap department. The rotation that does not influence the water pump promptly, also can seal the gap between drinking-water pipe and the inlet tube automatically after leading to water, need not the manual work and seals gap department, and is ingenious convenient, helps improving the operating condition of water pump.

Preferably, set up the spout with the sliding seat adaptation on the roof of roating seat, be equipped with the limiting plate on the lateral wall of sliding seat, set up the spacing groove with the limiting plate adaptation on the inner wall of spout, the one end that the outlet pipe was kept away from to the sliding seat is connected with a plurality of buffer spring of installing on the spout inner wall.

At the water pump opening's an instant, outlet pipe can spout rivers, and the pump body can be promoted backward by powerful water pressure, through carrying out movable mounting to the pump body to buffer it through the buffer spring at rear, can reduce the impact that the water pump produced automobile body and other equipment, thereby delay the life of equipment. Because flexible section has adopted the bellows for flexible section can twist reverse certain angle, consequently even the pump body produces the displacement, also can not cause to intake pipe and drinking-water pipe and drag and damage, and is stable practical.

Preferably, the bottom of inlet tube is equipped with flexible section, flexible section is the bellows, two a plurality of fixture blocks are blocked jointly on the ring flange.

The top of inlet tube can descend in the setting up of flexible section to convenient and drinking-water pipe separation, and then be convenient for take out annular gasbag and change, can be quick fix inlet tube and drinking-water pipe through the fixture block, thereby ensure stability and sealed effect.

Preferably, the fixture block comprises a trapezoidal block, a bayonet is formed in the front end of the trapezoidal block, a plurality of protrusions are arranged on the outer surface of one side, opposite to the flange, of the flange, and grooves matched with the protrusions are formed in the inner wall of the bayonet.

The structural design of trapezoidal piece makes the bayonet socket when receiving outside thrust, and the plate body of both sides is difficult for outwards crooked, has improved structural strength, and make the fixture block can be fixed fast through the design of arch and recess, and conveniently take off, annular gasbag adopts the elastic material preparation, and it can provide outside elasticity when two ring flanges are cliied, makes the fixture block steadily on two ring flanges, and then further improves the leakproofness when annular gasbag is bloated, makes rivers can't ooze.

Preferably, a necking part is arranged on the water pumping pipe, and one end of the metal hose is connected to the necking part.

The necking part arranged on the water pumping pipe can improve the pressure of water flow at the position, the pressure is transmitted into the annular air bag through the metal hose, the water pressure in the annular air bag is greater than the water pressure in the water pump, the sealing effect of the annular air bag is ensured, and the sealing capacity is further improved.

Preferably, angle fixed establishment includes that the activity is inserted the electromagnetism kelly of establishing on the mounting groove diapire and is offered three fixed orifices on the roating seat diapire, electromagnetism kelly and fixed orifices mutually support, and the radian distance of three fixed orifices relative to the central plug-in shaft is the degree, every all install the magnet piece on the roof of fixed orifices, and when the circular telegram of electromagnetism kelly, the magnet piece repels with the electromagnetism kelly.

Three fixed orifices corresponds the three orientation of outlet pipe respectively, the both sides direction and the rear of fire engine, the rear end of fire engine sets up correspondingly and exports messenger's water pipe and can lead to out smoothly, set up power button on the inner wall in water pump compartment, the electromagnetism kelly does not circular telegram under the natural state, it is attracted by the magnet piece and inserts the unable rotation of messenger's roating seat in the fixed orifices, the angle with the water pump is fixed, when the angle of needs adjustment water pump, press power button and lead to the electricity for the electromagnetism kelly, the electromagnetism kelly produces the magnetism that repels with the magnet piece, the magnet piece is repelled, can rotate the roating seat this moment. After the angle of the water pump is adjusted, the power supply is turned off, and the electromagnetic clamping rod loses magnetism and is upwards attracted by the magnet block in the other fixing hole to enter the fixing hole to fix the angle of the rotary seat. The structure ingeniously realizes the fixation of the angle of the water pump, and the water pump is convenient to rotate, convenient to operate and beneficial to improving the working efficiency.

Preferably, the electromagnetic clamping rod consists of an electromagnet and two round rods, the two round rods are respectively connected to two ends of the electromagnet, the outer diameter of the electromagnet is smaller than the outer diameters of the two round rods, and the end portions of the round rods are chamfered.

Carry out the contraction type design to the electro-magnet, make the coil on it can not be outstanding, can not cause the hindrance when the electromagnetism kelly moves about, ensure that the electromagnetism kelly is nimble to go up and down to can make it more smooth when getting into the fixed orifices at the tip chamfer of round bar, can not block, improve the stability of equipment during operation.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the fire pump is rotatably arranged on the fire truck, so that the orientation of the fire pump can be flexibly adjusted when the direction of the truck body cannot be adjusted, the water pipe is prevented from being bent, the water pressure is not influenced, and the smooth expansion of rescue work is ensured;

2. the joint of the water pumping pipe and the water inlet pipe is sealed by the aid of the water pressure expansion annular air bag, so that the fire pump can flexibly rotate, the sealing performance of the joint can be guaranteed, additional sealing measures are not needed, the fire pump is ingenious and convenient, and the rescue work efficiency is improved;

3. fix the angle of fire-fighting water pump through the electromagnetism kelly, the electromagnetism kelly falls after circular telegram, can rotate fire-fighting water pump angle of adjustment, and the disconnection power supply behind the angle of having adjusted the fire-fighting water pump, the automatic angle of withdrawing the fixed orifices of electromagnetism kelly and fixing the fire-fighting water pump is nimble ingenious, and it is more convenient to use.

Drawings

FIG. 1 is a schematic side view of the present invention;

FIG. 2 is an enlarged view of the water pump body of FIG. 1;

FIG. 3 is a schematic view of the overall structure of the water pump body according to the present invention;

FIG. 4 is a cross-sectional view A-A of the present invention;

FIG. 5 is an enlarged view of the structure of the present invention at B;

FIG. 6 is a schematic structural diagram of a fixture block according to the present invention;

FIG. 7 is an enlarged view of the structure of the present invention at C;

fig. 8 is a schematic structural view of the electromagnetic chuck lever of fig. 7.

In the figure: 1. a vehicle body; 2. a water pump compartment; 3. a water pumping pipe; 4. mounting grooves; 5. a water pump body; 501. a rotating base; 502. a central spindle is inserted; 503. a movable seat; 504. a pump body; 505. a buffer spring; 506. a water inlet pipe; 6. a flange plate; 7. a clamping block; 701. a trapezoidal block; 702. a bayonet; 703. a groove; 8. a necked-down portion; 9. a metal hose; 10. an annular air bag; 11. an electromagnetic clamping rod; 1101. an electromagnet; 1102. a round bar; 12. a fixing hole; 13. and a magnet block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 8, the present invention provides a fire pump for a fire engine, which has the following technical scheme:

the utility model provides a fire pump for fire engine, is including installing water pump body 5 on automobile body 1, and the water pump cabin 2 with the both sides intercommunication of automobile body 1 is seted up to the afterbody of automobile body 1, installs drinking-water pipe 3 on the inner wall of water pump cabin 2, draws water and from water pump body 5 blowout from the water source of the storage in automobile body 1, has seted up mounting groove 4 on the diapire of water pump cabin 2, and water pump body 5 rotates to be installed in mounting groove 4, is equipped with angle fixed establishment between mounting groove 4 and the water pump body 5.

The water pump body 5 comprises a rotary seat 501, a central insertion shaft 502 which is inserted into the bottom wall of the mounting groove 4 in a rotating mode is arranged on the bottom wall of the rotary seat 501, a movable seat 503 is mounted on the rotary seat 501, a pump body 504 is mounted on the movable seat 503, a water outlet pipe is arranged at one end of the pump body 504, a water inlet pipe 506 is vertically mounted on the top wall of the pump body 504, the end portion of the water pumping pipe 3 is bent downwards and inserted into the top end of the water inlet pipe 506, and the end portion of the water pumping pipe 3 is coaxial with the central insertion shaft 502.

The rotating seat 501 can rotate through the central insertion shaft 502 and cannot twist with the water pumping pipe 3, when the rotating seat 501 drives the pump body 504 to rotate, the water pumping pipe 3 is stably inserted into the water inlet pipe 506 to stably supply water, and it needs to be noted that the outer wall of the water pumping pipe 3 is tightly attached to the inner wall of the water inlet pipe 506, so that water can be stably pumped from the vehicle body 1 when the water pump is started, and air leakage is avoided. The mode of installation is rotated through to the water pump makes can adjust the orientation of water pump when the automobile body can't turn the direction in a flexible way, can avoid the water pipe to take place the distortion, guarantees developing smoothly of water pressure and rescue work.

Referring to fig. 1, 7 and 8, as an embodiment of the present invention, the angle fixing mechanism includes an electromagnetic clamping rod 11 movably inserted on the bottom wall of the mounting groove 4 and three fixing holes 12 opened on the bottom wall of the rotary base 501, the electromagnetic clamping rod 11 and the fixing holes 12 are matched with each other, the arc distance of the three fixing holes 12 relative to the central insertion shaft 502 is 90 degrees, a magnet block 13 is mounted on the top wall of each fixing hole 12, and when the electromagnetic clamping rod 11 is energized, the magnet block 13 is repelled from the electromagnetic clamping rod 11.

Three fixed orifices 12 correspond the three orientation of outlet pipe respectively, the both sides direction and the rear of fire engine, the rear end of fire engine sets up the export correspondingly and makes the water pipe lead to smoothly out, set up power button on the inner wall in water pump cabin 2, electromagnetism kelly 11 does not circular telegram under the natural state, it is attracted by magnet piece 13 and inserts and make unable rotation of roating seat 501 in the fixed orifices 12, the angle with the water pump is fixed, when the angle of water pump needs to be adjusted, press power button and lead to the circular telegram for electromagnetism kelly 11, electromagnetism kelly 11 produces the magnetism of repelling mutually with magnet piece 13, magnet piece 13 is repelled, can rotate roating seat 501 this moment. After the angle of the water pump is adjusted, the power supply is turned off, and the electromagnetic clamping rod 11 loses magnetism and is attracted upwards by the magnet block 13 in the other fixing hole 12 to enter the fixing hole 12 to fix the angle of the rotary base 501. The structure ingeniously realizes the fixation of the angle of the water pump, and the water pump is convenient to rotate, convenient to operate and beneficial to improving the working efficiency.

Further, the electromagnetic chuck 11 is composed of an electromagnet 1101 and two round rods 1102, the two round rods 1102 are respectively connected to two ends of the electromagnet 1101, the outer diameter of the electromagnet 1101 is smaller than the outer diameters of the two round rods 1102, and the end portions of the round rods 1102 are chamfered.

Carry out the contraction type design to electro-magnet 1101, make the coil on it can not be outstanding, can not cause the hindrance when the electromagnetism kelly 11 moves about, ensure that the electromagnetism kelly 11 is nimble to go up and down to can make it more smooth when getting into fixed orifices 12 at the tip chamfer of round bar 1102, can not block, improve the stability of equipment during operation. The reasonable design of the weight of the whole electromagnetic clamping rod 11 can enable the whole electromagnetic clamping rod to be stably adsorbed upwards by the magnet block 13, and particularly, the whole electromagnetic clamping rod can be realized by setting the round rod 1102 into a hollow structure, which is not described in detail herein.

Referring to fig. 2 and 5, flanges 6 are respectively arranged at the top end of the water inlet pipe 506 and the outer wall of the water pumping pipe 3, an annular air bag 10 sleeved on the water pumping pipe 3 is arranged between the two flanges 6, and a metal hose 9 is connected between the water pumping pipe 3 and the annular air bag 10.

Since there is a gap between the pumping pipe 3 and the water inlet pipe 506, water is easily leaked from the gap under high water pressure after the pump is turned on. Set up annular gasbag 10 between two ring flanges 6, after the water pump opened, water pressure can make rivers get into in the annular gasbag 10 with its inflation, annular gasbag 10 consequently with the space seal between two ring flanges 6, make rivers unable outflow, realized then the sealed of gap department. The rotation of the water pump is not influenced, the gap between the water pumping pipe 3 and the water inlet pipe 506 can be automatically sealed after water is supplied, the gap is not required to be manually sealed, the water pump is ingenious and convenient, and the working state of the water pump is favorably improved.

Further, the water suction pipe 3 is provided with a constricted portion 8, and one end of the metal hose 9 is connected to the constricted portion 8.

The necking part 8 arranged on the water pumping pipe 3 can improve the pressure of water flow at the position, the pressure is transmitted into the annular air bag 10 through the metal hose 9, the water pressure in the annular air bag 10 is larger than the water pressure in the water pump, the sealing effect of the annular air bag 10 is ensured, and the sealing capacity is further improved.

Referring to fig. 2, as an embodiment of the present invention, a telescopic section is provided at the bottom of the water inlet pipe 506, the telescopic section is a corrugated pipe, and a plurality of clamping blocks 7 are clamped on the two flange plates 6 together.

The setting of flexible section makes the top of inlet tube 506 can descend to convenient and drinking-water pipe 3 separation, and then be convenient for take out annular gasbag 10 and change, can be quick fix inlet tube 506 and drinking-water pipe 3 through fixture block 7, thereby ensure stability and sealed effect.

Referring to fig. 6, as an embodiment of the present invention, the locking block 7 includes a trapezoidal block 701, a bayonet 702 is formed at a front end of the trapezoidal block 701, a plurality of protrusions are respectively formed on outer surfaces of opposite sides of the two flanges 6, and a groove 703 adapted to the protrusions is formed on an inner wall of the bayonet 702.

Trapezoidal piece 701's structural design makes bayonet socket 702 when receiving outside thrust, the plate body of both sides is difficult for outwards crooked, structural strength is improved, and make fixture block 7 can be fixed fast through the design of arch and recess 703, and conveniently take off, annular gasbag 10 adopts the elastic material preparation, it can provide outside elasticity when two ring flanges 6 are cliied, make fixture block 7 block on two ring flanges 6 steadily, and then further improve the leakproofness when annular gasbag 10 is bloated, make rivers can't ooze.

Offer the spout with sliding seat 503 adaptation on the roof of roating seat 501, be equipped with the limiting plate on sliding seat 503's the lateral wall, offer the spacing groove with the limiting plate adaptation on the inner wall of spout, the one end that the outlet pipe was kept away from to sliding seat 503 is connected with a plurality of buffer spring 505 of installing on the spout inner wall.

At the water pump opening's an instant, outlet pipe can spout rivers, and pump body 504 can be promoted backward by powerful water pressure, through carrying out movable mounting to pump body 504 to buffer it through buffer spring 505 at rear, can reduce the impact that the water pump produced automobile body and other equipment, thereby delay the life of equipment. Because flexible section has adopted the bellows for flexible section can twist reverse certain angle, consequently even pump body 504 produces the displacement, can not cause to advance water pipe 506 and drinking-water pipe 3 and drag and damage, and is stable practical.

The working principle is as follows: when the water pump is not convenient to supply water in the direction of the body of the fire fighting truck, the power button is pressed to electrify the electromagnetic clamping rod 11, the electromagnetic clamping rod 11 generates magnetism repellent to the magnet block 13, the magnet block 13 is repelled, and the rotary base 501 can be rotated at the moment. After the angle of the water pump is adjusted, the power supply is turned off, and the electromagnetic clamping rod 11 loses magnetism and is attracted upwards by the magnet block 13 in the other fixing hole 12 to enter the fixing hole 12 to fix the angle of the rotary base 501. At this moment, the clamping block 7 is clamped on the two flange plates 6 to be stably connected, then the water pump is started, water pressure enables water flow to enter the annular air bag 10 to expand the annular air bag, the annular air bag 10 seals the space between the two flange plates 6, the water flow cannot flow out, then the sealing of the gap is achieved, and water can be stably supplied to fight fire.

The electric elements presented in the text are all connected with a power supply of the fire fighting truck through a transformer, and a master controller can be a conventional known device controlled by a computer and the like, the product model provided by the invention is only used according to the structural characteristics of the product, the product can be adjusted and modified after being purchased to be more matched with and accord with the technical scheme of the invention, the product model is a best application technical scheme, the product model can be replaced and modified according to the required technical parameters, and the product model is well known by the technical personnel in the field, so the technical personnel in the field can clearly obtain the corresponding use effect through the technical scheme provided by the invention.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.