CN109763984A - A kind of used in fire-fighting fire pump - Google Patents

Abstract

The invention belongs to fire fighting device technical field, specifically a kind of used in fire-fighting fire pump；Including fire pump ontology and controller；Fire pump ontology is fixed in the water tank of fire fighting truck by fixing sucking disk；Water inlet pipe and outlet pipe are respectively equipped on the fire pump ontology；It is communicated with No.1 pressure relief unit on the outlet pipe, No. two pressure relief units are communicated on water inlet pipe；The present invention is ingenious in design, and release speed is fast, by being used cooperatively for No.1 pressure relief unit and No. two pressure relief units, can reduce rapidly the intrinsic pressure of fire pump.

Description

A kind of used in fire-fighting fire pump

Technical field

The invention belongs to fire fighting device technical field, specifically a kind of used in fire-fighting fire pump.

Background technique

Fire pump refers to Special fire-fighting water pump or is up to state standards " fire pump performance requirement and test method " The common fresh water pump of GB6245.The fire demand water that most of fire water supplies provide, requires fire pump and pressurizes, to meet To the requirement of hydraulic pressure and water when fire extinguishing.

In using fire demand water pump, the pump housing is easily damaged, sealing element often fails, and the pipeline of water outlet can occur quick-fried It splits, to influence even to delay valuable fire fighting opportunity；Occur the reason of this phenomenon be fire pump work normally when water inlet pipe and The normal inflow and outflow of outlet pipe, but when fireman adjustment put out a fire position when, need to close fire-fighting chamber or fire monitor, or disappear When occurring abnormal during anti-, need to close outlet pipe, when outlet pipe is closed suddenly, the operating rate of fire pump is not reduced, However water flow but becomes zero suddenly, the pressure of entire fire pump just increases rapidly, inevitable when being more than power limit intensity Cause water inlet pipe or outlet pipe, even fire pump ontology is damaged；For such phenomenon of appearance, common processing mode is, First is that frequently checking, and corresponding component is replaced in time, second is that the object that selection is had excellent performance with pressure resistance, but both modes are only It is the palliative passive precautionary measures；So that the technical solution is restricted.

Summary of the invention

In order to make up for the deficiencies of the prior art, with solve in the prior art fire pump when in use because outlet pipe is closed suddenly Cause water inlet pipe, outlet pipe and fire pump ontology problem easy to damage；The invention proposes a kind of used in fire-fighting fire pumps.

The technical solution adopted by the present invention to solve the technical problems is: a kind of used in fire-fighting fire water of the present invention Pump, including fire pump ontology and controller；The controller is for controlling fire pump work；Fire pump ontology passes through solid Determine sucker to be fixed in the water tank of fire fighting truck；Water inlet pipe and outlet pipe are respectively equipped on the fire pump ontology；The water outlet No.1 pressure relief unit is communicated on pipe, No.1 pressure relief unit is for reducing the water in fire pump ontology, in water inlet pipe and outlet pipe Pressure, No.1 pressure relief unit includes No.1 relief tube, No.1 gasket, No.1 seal head and mandril；It is set in the No.1 relief tube There is air pressure valve, No.1 gasket is bonded completely with the side wall of No.1 relief tube, and No.1 gasket does not work in No.1 pressure relief unit When by the No.1 release seal of tube；The No.1 seal head is located at the lower section of No.1 gasket, and mandril is located under No.1 seal head It is square and affixed with No.1 seal head；The mandril is arranged with fixed ring far from one end of No.1 seal head, the two sides of fixed ring with The side wall of No.1 relief tube is affixed, and hole is offered in fixed ring；Mandril is in fixed ring when the No.1 seal head moves down Sliding；Spring is equipped between the No.1 seal head and mandril, spring is set on mandril；The No.1 gasket is unloaded with No.1 The part of pressure pipe side wall contact offers cavity inside it, filled with gas in cavity, when No.1 gasket seals No.1 relief tube The gas in cavity is discharged in cavity compression；The No.1 relief tube is by two bottleneck shape relief tubes, No.1 lantern ring, No. two lantern rings Formed with elastic ring, No.1 lantern ring, No. two lantern rings and elastic ring be respectively positioned between adjacent bottleneck shape relief tube, No.1 lantern ring with Bottleneck shape relief tube is affixed, and No. two lantern rings are located at the outside of No.1 lantern ring, and the end of elastic ring is located at No.1 lantern ring and No. two sets Between ring, and elastic ring is screwed together by No.1 lantern ring and No. two lantern rings；No. two pressure relief units are communicated on the water inlet pipe, The hydraulic pressure that No. two pressure relief units are used to that No.1 pressure relief unit to be assisted to eliminate in fire pump ontology, water inlet pipe and outlet pipe；The present invention By designing No.1 pressure relief unit, the intrinsic hydraulic pressure of fire pump can be reduced, fire water is prevented when outlet pipe is closed suddenly Pump intrinsic hydraulic pressure it is excessive and cause fire pump ontology damage, to influence the efficiency of fire-fighting and rescue；By using bottleneck The No.1 relief tube that shape relief tube, No.1 lantern ring, No. two lantern rings and elastic ring form, can reduce water flow and rush to No.1 relief tube It hits, improves the service life of No.1 relief tube, while by designing No. two pressure relief units at water inlet pipe, can further drop The low intrinsic hydraulic pressure of fire pump, prevents water inlet pipe and outlet pipe from the phenomenon that booster occur, improve fire pump ontology, into The service life of water pipe and outlet pipe.

Preferably, No. two pressure relief units include No. two relief tubes, No. two gaskets, No. two seal heads, sliding bar, consolidate Determine block and cylinder；Pressure valve is equipped in No. two relief tubes；The lower section of the cylinder is equipped with fixed station, and fixed station is unloaded with No. two The side wall of pressure pipe is affixed, and hole is offered on fixed station；The bottom of the cylinder and fixed station are affixed, and the input terminal of cylinder passes through gas Pipe is connected to the cavity in No.1 gasket on No.1 relief tube, and the output end of cylinder is affixed with fixed block, and fixed block is far from gas One end of cylinder and sliding bar are affixed, and sliding bar is arranged No. two seal heads far from one end of fixed block, and No. two seal heads are far from sliding Affixed No. two gaskets in one end of bar, No. two are equipped with spring between seal head and sliding bar, spring is set on sliding bar；It is described The gas of cavity compression discharge, which enters in cylinder, when No.1 gasket seals No.1 relief tube stretches out the output end of cylinder, gas No. two gaskets are bonded No. two release seals of tube with No. two relief tubes when the output end of cylinder stretches out；The present invention passes through design two Pressure relief unit, No. two pressure relief units can cooperate No.1 pressure relief unit to reduce the intrinsic air pressure of fire pump at work, accelerate The speed of fire pump ontology release.

Preferably, splitter cavity is offered in the No.1 seal head and mandril in the No.1 relief tube, splitter cavity is with No.1 It is symmetrical arranged on the basis of the vertical centerline of relief tube, splitter cavity is for reducing impact of the water flow to No.1 relief tube；The present invention By adding splitter cavity, shunting processing can be carried out to the water flowed into No.1 relief tube, reduce the impact force of water, improve one The service life of number relief tube.

Preferably, No. two seal heads are manufactured using magnetic material, and fixed block is electromagnet, and when fixed block energization It is magnetic identical as the magnetism of No. two seal heads；The fixed block side is connected with No.1 electrical contact, on the side wall of No. two relief tubes No. two electrical contacts are connected with, No.1 electrical contact and No. two electrical contacts are electrically connected with the controller, and No.1 electrical contact and No. two electricity touch Fixed block is powered when head contact；The present invention is touched by design No.1 electrical contact and No. two electrical contacts, No.1 electrical contact and No. two electricity Head is powered at the time of contact, so that fixed block has magnetism, and No. two seal heads are using magnetic material manufacture, and No. two seal heads It is magnetic identical as fixed block, therefore No. two have repulsive force between seal head and fixed block, so that No. two gaskets are unloaded at No. two Pressure unit can be with No. two relief tubes of better seal when not working, it is ensured that in normal work, No. two are unloaded fire pump ontology Water flow entrance is not had in pressure pipe.

Preferably, it is circular that the part that the elastic ring is located in No.1 lantern ring and No. two lantern rings, which is arranged with cross section structure, Steel wire set, steel wire set is for protecting elastic ring；The present invention passes through the elastic ring between No.1 lantern ring and No. two lantern rings On be arranged steel wire set, elastic ring can be made not contact directly with the No.1 lantern ring being spirally connected and No. two lantern rings, reduce the mill of elastic ring Damage, increases the service life of elastic ring.

Preferably, the thread segment structure between the No.1 lantern ring and No. two lantern rings is semicircle, semicircular screw thread Be spirally connected with circular steel wire set make No.1 lantern ring, No. two be bonded between lantern ring and elastic ring, while elastic ring can also be consolidated completely It is fixed；The present invention is semicircular screw thread by design section structure, and structure is that semicircular screw thread can be round with cross section structure Elastic ring be bonded completely so that No.1 lantern ring, No. two good seals between lantern ring and elastic ring, increasing No.1 relief tube makes Reliability.

When fire pump ontology works normally, since No.1 gasket is bonded compression with the side wall of No.1 relief tube completely, When No.1 gasket compresses, the gas in cavity is entered in cylinder by tracheae stretches out the output end of cylinder, cylinder Output end stretches out so that No. two gaskets are bonded compression, while No.1 electrical contact and No. two electricity with the side wall of No. two relief tubes completely Contact, fixed block is powered so that fixed block and No. two seal heads repulsions, enable the side of No. two gaskets and No. two relief tubes Wall is bonded compact, ensure that No. two relief tubes of No. two gasket energy better seals, at this time No.1 relief tube and No. two releases Pipe is in a sealed state；When the outlet pipe of fire pump ontology is closed suddenly, since the operating rate of fire pump ontology does not drop It is low, and water flow becomes zero suddenly, and the water in water inlet pipe is still constantly entering in fire pump ontology, so that fire pump sheet Intracorporal pressure increases suddenly；At this point, the intrinsic water of fire pump can endlessly enter No.1 relief tube and No. two releases In pipe, the pressure valve in No.1 relief tube and No. two relief tubes is opened, when water flow enters in No.1 relief tube, water impact one Number gasket moves down No.1 gasket, and No.1 relief tube is dredged when No.1 gasket moves down, and water flow is from No.1 The two sides of gasket are flowed out, and water flow is excessive in order to prevent that No.1 relief tube is caused to damage, can will be a part of by splitter cavity Moisture stream reduces the impact force of water, and passes through the one of bottleneck shape relief tube, No.1 lantern ring, No. two lantern rings and elastic ring composition Number relief tube can further reduce impact of the water to No.1 relief tube, improve one so that No.1 relief tube has flexibility The service life of number relief tube；When No.1 gasket moves down, cavity restores to the original state, and the gas in cylinder returns to sky from new Intracavitary, the output end of cylinder moves down at this time, and No.1 electrical contact and No. two electrical contacts disconnect, so that No. two gaskets are to moving down It is dynamic, so that No. two relief tube dredgings, enter the water in water inlet pipe by No. two relief tube discharges at this time；Pass through No.1 pressure relief unit With being used cooperatively for No. two pressure relief units, the intrinsic hydraulic pressure of fire pump can be rapidly reduced, so that fire pump ontology is not allowed It is easily damaged because hydraulic pressure is excessive, while water inlet pipe and outlet pipe will not be caused the phenomenon that booster occur because hydraulic pressure is excessive；And works as and disappear After the completion of anti-pump ontology release, under the action of the spring, mandril is moved up, and No.1 gasket is from the side newly with No.1 relief tube Wall fitting, so that the cavity compression discharge gas of No.1 gasket, the gas of discharge are again gone into cylinder by tracheae, made The output end of cylinder stretches out again, No.1 electrical contact and No. two electrical contacts contact again, and fixed block is powered from new, fixed block with No. two sealing station are mutually exclusive, and No. two gaskets are bonded again with the side wall of No. two relief tubes, at this moment No.1 relief tube and two From being newly restored to sealing state, when convenient release next time, is used for number relief tube.

Beneficial effects of the present invention are as follows:

1. a kind of used in fire-fighting fire pump of the present invention；Continuity is strong, and release speed is fast, passes through No.1 release list Being used cooperatively for member and No. two pressure relief units, can reduce rapidly the intrinsic pressure of fire pump, while can also reduce water inlet pipe It with the pressure in outlet pipe, avoids when outlet pipe is closed suddenly, the intrinsic pressure of fire pump increases suddenly and causes into water Pipe and outlet pipe damage or the damage of fire pump ontology.

2. a kind of used in fire-fighting fire pump of the present invention, ingenious in design, structure novel, the work of No.1 hydraulic pressure unit When can drive the work of No. two pressure relief units, while improving fire pump decompression rate, also improve the utilization rate of resource, The service life of fire pump ontology can also be improved when No.1 pressure relief unit and No. two pressure relief units work simultaneously.

Detailed description of the invention

The present invention will be further explained below with reference to the attached drawings.

Fig. 1 is main view of the invention；

Fig. 2 is the cross-sectional view of No.1 relief tube；

Fig. 3 is the cross-sectional view of No. two relief tubes；

Fig. 4 is the partial enlarged view in Fig. 2 at A；

Fig. 5 is the partial enlarged view in Fig. 2 at B；

Fig. 6 is the partial enlarged view in Fig. 3 at C；

In figure: fire pump ontology 1, fixing sucking disk 2, water inlet pipe 3, outlet pipe 4, No.1 pressure relief unit 5, No.1 relief tube 51, bottleneck shape relief tube 511, No.1 lantern ring 512, No. two lantern rings 513, elastic ring 514, No.1 gasket 52, No.1 seal heads 53, mandril 54, fixed ring 55, the seal head of gasket 62, two of relief tube 61, two of pressure relief unit 6, two of cavity 56, two 63, sliding bar 64, fixed block 65,651, No. two electrical contacts 652 of No.1 electrical contact, cylinder 66, tracheae 661, fixed station 67, shunting Chamber 7, steel wire set 8.

Specific embodiment

In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below Specific embodiment is closed, the present invention is further explained.

As shown in Figures 1 to 6, a kind of used in fire-fighting fire pump of the present invention, including fire pump ontology 1 and control Device processed；The controller is for controlling fire pump work；Fire pump ontology 1 is fixed on fire fighting truck by fixing sucking disk 2 In water tank；Water inlet pipe 3 and outlet pipe 4 are respectively equipped on the fire pump ontology 1；No.1 is communicated on the outlet pipe 4 to unload Unit 5 is pressed, No.1 pressure relief unit 5 is for reducing the hydraulic pressure in fire pump ontology, in water inlet pipe 3 and outlet pipe 4, No.1 release list Member 5 includes No.1 relief tube 51, No.1 gasket 52, No.1 seal head 53 and mandril 54；It is equipped in the No.1 relief tube 51 Air pressure valve, No.1 gasket 52 are bonded completely with the side wall of No.1 relief tube 51, No.1 gasket 52 No.1 pressure relief unit 5 not No.1 relief tube 51 is sealed when work；The No.1 seal head 53 is located at the lower section of No.1 gasket 52, and mandril 54 is located at one The lower section of number seal head 53 and affixed with No.1 seal head 53；The mandril 54 is arranged with solid far from one end of No.1 seal head 53 Determine ring 55, the two sides of fixed ring 55 and the side wall of No.1 relief tube 51 are affixed, offer hole in fixed ring 55；The No.1 sealing First 53 mandrils 54 when moving down slide in fixed ring 55；Spring, bullet are equipped between the No.1 seal head 53 and mandril 54 Spring is set on mandril 54；Part that the No.1 gasket 52 is contacted with 51 side wall of No.1 relief tube, open up inside it is free Chamber 56, cavity 56 is interior filled with gas, and cavity 56 compresses the gas made in cavity 56 when No.1 gasket 52 seals No.1 relief tube 51 Body discharge；The No.1 relief tube 51 is by two bottleneck shape relief tubes 511, No.1 lantern ring 512, No. two lantern rings 513 and elastic rings 514 compositions, 512, No. two lantern rings 513 of No.1 lantern ring and elastic ring 514 are respectively positioned between adjacent bottleneck shape relief tube 511, and one Number lantern ring 512 and bottleneck shape relief tube 511 are affixed, and No. two lantern rings 513 are located at the outside of No.1 lantern ring 512, the end of elastic ring 514 Portion is located between No.1 lantern ring 512 and No. two lantern rings 513, and elastic ring 514 is spirally connected by No.1 lantern ring 512 and No. two lantern rings 513 Together；No. two pressure relief units 6 are communicated on the water inlet pipe 3, No. two pressure relief units 6 are for assisting No.1 pressure relief unit 5 to disappear Except the hydraulic pressure in fire pump ontology, water inlet pipe 3 and outlet pipe 4；The present invention, can be in outlet pipe 4 by design No.1 pressure relief unit 5 When closing suddenly, the hydraulic pressure in fire pump ontology 1 is reduced, prevents the hydraulic pressure in fire pump ontology 1 excessive and causes fire-fighting Water pump body 1 damages, to influence the efficiency of fire-fighting and rescue；By using bottleneck shape relief tube 511, No.1 lantern ring No. 512, two numbers The No.1 relief tube 51 that lantern ring 513 and elastic ring 514 form, can reduce impact of the water flow to No.1 relief tube 51, improve No.1 The service life of relief tube 51, while by designing No. two pressure relief units 6 at water inlet pipe 3, it can further reduce fire-fighting Hydraulic pressure in water pump body 1 prevents water inlet pipe 3 and outlet pipe 4 from the phenomenon that booster occur, improves fire pump ontology 1, water inlet The service life of pipe 3 and outlet pipe 4.

As a kind of specific embodiment of the invention, No. two pressure relief units 6 include No. two relief tube 61, two close 62, No. two seal heads 63 of packing, sliding bar 64, fixed block 65 and cylinder 66；Pressure valve is equipped in No. two relief tubes 61；Institute The lower section for stating cylinder 66 is equipped with fixed station 67, and fixed station 67 and the side wall of No. two relief tubes 61 are affixed, offer on fixed station 67 Hole；The bottom of the cylinder 66 and fixed station 67 are affixed, and the input terminal of cylinder 66 passes through on tracheae 661 and No.1 relief tube 51 one Cavity 56 in number gasket 52 is connected to, and the output end and fixed block 65 of cylinder 66 are affixed, fixed block 65 far from cylinder 66 one End is affixed with sliding bar 64, and sliding bar 64 is arranged No. two seal heads 63 far from one end of fixed block 65, and No. two seal heads 63 are separate Affixed No. two gaskets 62 in one end of sliding bar 64, are equipped with spring between No. two seal heads 63 and sliding bar 64, spring is set in On sliding bar 64；The gas of the compression of cavity 56 discharge enters in cylinder 66 when the No.1 gasket 52 seals No.1 relief tube 51 So that the output end of cylinder 66 stretches out, No. two gaskets 62 are bonded with No. two relief tubes 61 by two when the output end of cylinder 66 stretches out Number relief tube 61 seals；The present invention can cooperate No.1 to unload at work by No. two pressure relief units 6 of design, No. two pressure relief units 6 It presses unit 5 to reduce the air pressure in fire pump ontology 1, accelerates the speed of 1 release of fire pump ontology.

No.1 seal head 53 and mandril 54 as a kind of specific embodiment of the invention, in the No.1 relief tube 51 Splitter cavity 7 is inside offered, splitter cavity 7 is symmetrical arranged on the basis of the vertical centerline of No.1 relief tube 51, and splitter cavity 7 is for subtracting Few impact of the water flow to No.1 relief tube 51；The present invention by adding splitter cavity 7, can to flow into No.1 relief tube 51 in water into Row shunting processing, reduces the impact force of water, improves the service life of No.1 relief tube 51.

As a kind of specific embodiment of the invention, No. two seal heads 63 are manufactured using magnetic material, fixed block 65 be electromagnet, and the magnetism when energization of fixed block 65 is identical as the magnetism of No. two seal heads 63；65 side of fixed block is solid It is connected to No.1 electrical contact 651, is connected with No. two electrical contacts 652 on the side wall of No. two relief tubes 61, No.1 electrical contact 651 and No. two Electrical contact 652 is electrically connected with the controller, and fixed block 65 is powered when No.1 electrical contact 651 and No. two electrical contacts 652 contact；This hair It is bright to be led at the time of contact by design No.1 electrical contact 651 and No. two electrical contacts 652, No.1 electrical contact 651 and No. two electrical contacts 652 Electricity, so that fixed block 65 has magnetism, and No. two seal heads 63 are manufactured using magnetic material, and the magnetism of No. two seal heads 63 with Fixed block 65 is identical, therefore has repulsive force between No. two seal heads 63 and fixed block 65, so that No. two gaskets 62 are at No. two Pressure relief unit 6 can be with No. two relief tubes 61 of better seal when not working, it is ensured that fire pump ontology 1 in normal work, Water flow entrance is not had in No. two relief tubes 61.

As a kind of specific embodiment of the invention, the elastic ring 514 is located at No.1 lantern ring 512 and No. two lantern rings It is circular steel wire set 8 that part in 513, which is arranged with cross section structure, and steel wire set 8 is for protecting elastic ring 514；The present invention passes through It will be arranged steel wire set 8 on elastic ring 514 between No.1 lantern ring 512 and No. two lantern rings 513, elastic ring 514 can be made not It is directly contacted with the No.1 lantern ring 512 being spirally connected and No. two lantern rings 513, reduces the abrasion of elastic ring 514, increase elastic ring 514 service life.

As a kind of specific embodiment of the invention, the screw thread between the No.1 lantern ring 512 and No. two lantern rings 513 is cut Face structure is semicircle, and semicircular screw thread and circular steel wire set 8 are spirally connected and make 512, No. two lantern rings 513 of No.1 lantern ring and elasticity It is bonded completely between circle 514, while also can be fixed by elastic ring 514；The present invention is semicircular spiral shell by design section structure Line, structure is that semicircular screw thread can be that circular elastic ring 514 is bonded completely with cross section structure, so that No.1 lantern ring 512, two Number good seal between lantern ring 513 and elastic ring 514, increases the reliability that No.1 relief tube 51 uses.

When work, when fire pump ontology works normally, since No.1 gasket 52 and the side wall of No.1 relief tube 51 are complete Full fitting compresses, and when No.1 gasket 52 compresses, the gas in cavity 56 is entered in cylinder 66 by tracheae 661 makes cylinder 66 output end stretches out, and the output end of cylinder 66 stretches out so that No. two gaskets 62 are bonded completely with the side wall of No. two relief tubes 61 It compresses, while No.1 electrical contact 651 and No. two electrical contacts 652 contact, fixed block 65 is powered so that fixed block 65 and No. two sealings First 63 repel, and so that No. two gaskets 62 is bonded with the side wall of No. two relief tubes 61 compact, ensure that No. two 62 energy of gasket No. two relief tubes 61 of better seal, No.1 relief tube 51 and No. two relief tubes 61 are in a sealed state at this time；Work as fire pump When the outlet pipe 4 of ontology is closed suddenly, since the operating rate of fire pump ontology does not reduce, and water flow becomes zero suddenly, And the water in water inlet pipe 3 is still constantly entering in fire pump ontology, so that the intrinsic pressure of fire pump increases suddenly；This When, the intrinsic water of fire pump can endlessly enter in No.1 relief tube 51 and No. two relief tubes 61, No.1 relief tube 51 It is opened with the pressure valve in No. two relief tubes 61, when water flow enters in No.1 relief tube 51, water impact No.1 gasket 52 So that No.1 gasket 52 moves down, No.1 relief tube 51 is dredged when No.1 gasket 52 moves down, and water flow is close from No.1 The two sides of packing 52 are flowed out, and water flow is excessive in order to prevent that No.1 relief tube 51 is caused to damage, can be by one by splitter cavity 7 Divide moisture stream, reduce the impact force of water, and passes through bottleneck shape relief tube 511,512, No. two lantern rings 513 of No.1 lantern ring and elasticity The No.1 relief tube 51 of 514 composition of circle can further reduce water to No.1 release so that No.1 relief tube 51 has flexibility The impact of pipe 51 improves the service life of No.1 relief tube 51；When No.1 gasket 52 moves down, cavity 56 restores former Shape, the gas in cylinder 66 return in cavity 56 from newly, and the output end of cylinder 66 moves down at this time, 651 He of No.1 electrical contact No. two electrical contacts 652 disconnect, so that No. two gaskets 62 move down, so that No. two relief tubes 61 are dredged, enter water inlet at this time Water in pipe 3 is discharged by No. two relief tubes 61；It, can be with by being used cooperatively for No.1 pressure relief unit 5 and No. two pressure relief units 6 The intrinsic hydraulic pressure of fire pump is rapidly reduced, so that fire pump ontology is not easy to damage because hydraulic pressure is excessive, while will not be because Hydraulic pressure is excessive to cause water inlet pipe 3 and outlet pipe 4 the phenomenon that booster occur；And after the completion of the release of fire pump ontology, in spring Under effect, mandril 54 is moved up, and No.1 gasket 52 is bonded from newly with the side wall of No.1 relief tube 51, so that No.1 gasket The 52 compression discharge gas of cavity 56, the gas of discharge is again gone into cylinder 66 by tracheae 661, so that cylinder 66 is defeated Outlet is stretched out again, and No.1 electrical contact 651 and No. two electrical contacts 652 contact again, and fixed block 65 is powered from new, fixed block 65 with No. two sealing station are mutually exclusive, and No. two gaskets 62 are bonded again with the side wall of No. two relief tubes 61, at this moment No.1 relief tube 51 and No. two relief tubes 61 from be newly restored to sealing state, when convenient release next time, uses.

In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is based on attached drawing institute The orientation or positional relationship shown, is merely for convenience of description of the present invention and simplification of the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as protecting the present invention The limitation of range.

The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the above embodiments and description only describe originals of the invention Reason, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes and improvements It all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its equivalent circle It is fixed.

Claims (6)

1. a kind of used in fire-fighting fire pump, it is characterised in that: including fire pump ontology (1) and controller；The controller For controlling fire pump work；Fire pump ontology (1) is fixed in the water tank of fire fighting truck by fixing sucking disk (2)；It is described Water inlet pipe (3) and outlet pipe (4) are respectively equipped on fire pump ontology (1)；No.1 release list is communicated on the outlet pipe (4) First (5), No.1 pressure relief unit (5) are unloaded for reducing the hydraulic pressure in fire pump ontology, in water inlet pipe (3) and outlet pipe (4), No.1 Pressing unit (5) includes No.1 relief tube (51), No.1 gasket (52), No.1 seal head (53) and mandril (54)；The No.1 Air pressure valve is equipped in relief tube (51), No.1 gasket (52) is bonded completely with the side wall of No.1 relief tube (51), No.1 sealing (52) are padded to seal No.1 relief tube (51) when No.1 pressure relief unit (5) does not work；The No.1 seal head (53) is located at one The lower section of number gasket (52), mandril (54) are located at the lower section of No.1 seal head (53) and affixed with No.1 seal head (53)；Institute It states mandril (54) to be arranged with fixed ring (55) far from the one end of No.1 seal head (53), the two sides of fixed ring (55) and No.1 release The side wall for managing (51) is affixed, and fixed ring offers hole on (55)；Mandril (54) exists when the No.1 seal head (53) moves down Sliding in fixed ring (55)；Spring is equipped between the No.1 seal head (53) and mandril (54), spring is set in mandril (54) On；Part that the No.1 gasket (52) contacts with No.1 relief tube (51) side wall offers cavity (56), cavity inside it (56) filled with gas in, cavity (56) compresses the gas made in cavity (56) when No.1 gasket (52) seals No.1 relief tube (51) Body discharge；The No.1 relief tube (51) is by two bottleneck shape relief tubes (511), No.1 lantern ring (512), No. two lantern rings (513) It is formed with elastic ring (514), No.1 lantern ring (512), No. two lantern rings (513) and elastic ring (514) are respectively positioned on adjacent bottleneck shape Between relief tube (511), No.1 lantern ring (512) and bottleneck shape relief tube (511) are affixed, and No. two lantern rings (513) are located at No.1 set The outside of ring (512), the end of elastic ring (514) is located between No.1 lantern ring (512) and No. two lantern rings (513), and No.1 set Elastic ring (514) is screwed together by ring (512) and No. two lantern rings (513)；No. two release lists are communicated on the water inlet pipe (3) First (6), No. two pressure relief units (6) are for assisting No.1 pressure relief unit (5) to eliminate fire pump ontology, water inlet pipe (3) and outlet pipe (4) hydraulic pressure in.

2. a kind of used in fire-fighting fire pump according to claim 1, it is characterised in that: No. two pressure relief units (6) Including No. two relief tubes (61), No. two gaskets (62), No. two seal heads (63), sliding bar (64), fixed block (65) and cylinder (66)；Pressure valve is equipped in No. two relief tubes (61)；The lower section of the cylinder (66) is equipped with fixed station (67), fixed station (67) affixed with the side wall of No. two relief tubes (61), fixed station offers hole on (67)；The bottom of the cylinder (66) and fixation Platform (67) is affixed, and the input terminal of cylinder (66) passes through in No.1 gasket (52) on tracheae (661) and No.1 relief tube (51) Cavity (56) connection, the output end and fixed block (65) of cylinder (66) are affixed, fixed block (65) far from cylinder (66) one end and Sliding bar (64) is affixed, and sliding bar (64) is arranged No. two seal heads (63), No. two seal heads far from the one end of fixed block (65) (63) it far from affixed No. two gaskets (62) in one end of sliding bar (64), is equipped between No. two seal heads (63) and sliding bar (64) Spring, spring are set on sliding bar (64)；Cavity (56) is pressed when No.1 gasket (52) sealing No.1 relief tube (51) The gas indented out, which enters in cylinder (66), stretches out the output end of cylinder (66), No. two when the output end of cylinder (66) stretches out Gasket (62) is bonded with No. two relief tubes (61) seals No. two relief tubes (61).

3. a kind of used in fire-fighting fire pump according to claim 2, it is characterised in that: in the No.1 relief tube (51) No.1 seal head (53) and mandril (54) in offer splitter cavity (7), splitter cavity (7) with No.1 relief tube (51) it is vertical in It is symmetrical arranged on the basis of heart line, splitter cavity (7) is for reducing impact of the water flow to No.1 relief tube (51).

4. a kind of used in fire-fighting fire pump according to claim 2, it is characterised in that: No. two seal heads (63) are adopted It is manufactured with magnetic material, fixed block (65) is electromagnet, and magnetism and No. two seal head (63) phases when fixed block (65) energization Together；Fixed block (65) side is connected with No.1 electrical contact (651), and No. two electricity are connected on the side wall of No. two relief tubes (61) Contact (652), No.1 electrical contact (651) and No. two electrical contacts (652) are electrically connected with the controller, No.1 electrical contact (651) with Fixed block (65) is powered when No. two electrical contact (652) contacts.

5. a kind of used in fire-fighting fire pump according to claim 1, it is characterised in that: the elastic ring (514) is located at It is circular steel wire set (8), steel wire set (8) that part in No.1 lantern ring (512) and No. two lantern rings (513), which is arranged with cross section structure, For protecting elastic ring (514).

6. a kind of used in fire-fighting fire pump according to claim 5, it is characterised in that: the No.1 lantern ring (512) and Thread segment structure between No. two lantern rings (513) is semicircle, and semicircular screw thread and circular steel wire set (8) are spirally connected and make one It number is bonded completely between lantern ring (512), No. two lantern rings (513) and elastic ring (514), while also can be fixed by elastic ring (514).