CN107281670A - A kind of gear mechanism is pumped into formula foam proportioning unit - Google Patents
A kind of gear mechanism is pumped into formula foam proportioning unit Download PDFInfo
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- CN107281670A CN107281670A CN201710530251.4A CN201710530251A CN107281670A CN 107281670 A CN107281670 A CN 107281670A CN 201710530251 A CN201710530251 A CN 201710530251A CN 107281670 A CN107281670 A CN 107281670A
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- foam
- bearing
- hydraulic turbine
- pump
- foam pump
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
Abstract
A kind of gear mechanism is pumped into formula foam proportioning unit, has：The hydro powered gear type hydraulic turbine, the foam impeller pump being connected by intermediate bearing mechanism with the driving output shaft of the hydro powered gear type hydraulic turbine, the fire-fighting mixed liquor export agency of the delivery port of the hydro powered gear type hydraulic turbine and the liquid outlet of foam impeller pump is connected respectively, the hydro powered gear type hydraulic turbine is principal and subordinate's Double-gear structure, constant gap is set between two gears of principal and subordinate's bidentate wheel construction are constituted, foam impeller pump is principal and subordinate's dual-rotor structure, constant gap is set between two rotors of principal and subordinate's dual-rotor structure are constituted, the main rotating shaft that driving gear is connected in the hydro powered gear type hydraulic turbine constitutes the main rotating shaft driven in output shaft connection foam impeller pump.The hydro powered gear type hydraulic turbine and foam impeller pump are designed to an entirety by the present invention, and cost is low, and compact conformation, small volume is easy to use, because volumetric efficiency is high, the fire water pressure that system will consume less.
Description
Technical field
The present invention relates to a kind of foam proportioning unit.It is more particularly to a kind of to be rotated by the fire-fighting water-driven hydraulic turbine,
The gear mechanism of foam gear pump operating is driven to be pumped into formula foam proportioning unit.
Background technology
Foam proportioning unit, is indispensable device in fire fighting device.Current foam proportioning unit is main
There is following four generations product：
First generation product：The foam solution proportion mixer of negative pressure form.Produced during fire water passing ratio blender negative
Pressure, is mixed to form foam mixing liquid, the advantage of this foam proportioning unit is structure letter by foam solution suction and fire water
It is single, low cost.Foam can also be added, and have the disadvantage that foams mix ratio is not precise and stable enough.
Second generation product：Pressure type foam proportioning unit, foam solution is stored in the capsule of pressure vessel, a part
Fire water extrudes foam solution into foam solution pressure vessel, and passing ratio blender is mixed to form foam solution with fire water.This
The advantage for planting foam proportioning unit is that foams mix ratio is more stable than first generation product.Have the disadvantage that foam solution can not be added,
Concentrated tank is pressure vessel.
Third generation product：Pressure balance type foam proportioning unit.Foam solution is stored in non-pressure vessel, and foam solution leads to
Cross pump and be pressed and delivered to equilibrated valve, equilibrated valve is by balancing foam hydraulic coupling and fire fighting hydraulic pressure, it is ensured that can pass through
Equilibrated valve enters the foam hydraulic coupling and fire water pressure difference substantially constant of proportioner, and any excess foam liquid is back to foam
Flow container.This foam solution proportion mixer advantage is that foam solution can be added at any time, and foams mix ratio is more stablized.Lack
Point is that structure is more complicated than the second generation, and volume is big, and foam pump needs diesel engine, motor or hydraulic turbine driving, consumes certain energy.
Proportioner brings certain fire water pressure drop, simultaneously as equipment is more, fault rate is higher than the second generation.
Forth generation product：Machinery, which is pumped into formula foam proportioning unit, includes the extraordinary hydraulic turbine, foam pump and shaft coupling three
Part is constituted.
With mechanism is compact, system capacity utilization rate high, reliability is high, the advantages of foam solution can be added at any time.System
During work, mechanical energy is rotated by the hydraulic turbine output on fire water pipeline, foam pump, foam pump are driven by shaft coupling
By in the foam pressurization injection fire fighting supply pipeline in normal pressure foam tank, mixed with fire water.Suitable turbine parameter is set,
Correct foam pump is selected, foams mix ratio can just keep constant.Hydraulic turbine output speed and the fire water by the hydraulic turbine
Flow is directly proportional, and the output flow of foam pump is directly proportional to the rotating speed of foam pump, because hydraulic turbine main shaft and foam pump main shaft are same
Step rotation, also ensures that the ratio between the flow of foam solution and the flow of fire water keep constant.
At present, the machinery for having two kinds of forms is pumped into formula fixed froth installation：
1. the vane type hydraulic turbine is connected with foam foam gear pump by shaft coupling, the vane type hydraulic turbine and foam gear pump peace
On a common base；
Vane type hydraulic turbine major defect is due to that fire water does not have lubricity, it is easy to scratch blade, causes the hydraulic turbine
It is stuck.Require that fire water is clean simultaneously, it is impossible to there are solid foreign materials.
Because the machinery of this kind of form is pumped into formula foam proportioning unit, the vane type hydraulic turbine is placed on one with foam pump
On individual public prying body, pass through shaft coupling connection transmission moment of torsion.Volume is larger.
2. the double-screw type hydraulic turbine is connected with foam three screw pump by shaft coupling, the double-screw type hydraulic turbine and the spiral shell of foam three
Bar pump is arranged on a common base.
At present, the double-screw type hydraulic turbine, driven screw rotation, when the hydraulic turbine works, active spiral shell are driven using active spiral
Rotation drives driven spiral rotating, does not have synchromesh gear to transmit moment of torsion between active spiral and driven spiral, active spiral with it is driven
Abrasion can be produced between spiral, meanwhile, active spiral is also to have contact between driven spiral and the hydraulic turbine housing, spiral with
Also abrasion can be produced between housing, so, it is desirable to fire water is clean, it is impossible to have solid particle, and otherwise spiral water turbine can be ground
Damage and be even stuck.
Because the machinery of this kind of form is pumped into formula foam proportioning unit, screw type water turbine is placed on one with foam pump
On individual public prying body, by shaft coupling connection transmission moment of torsion, volume is larger.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of while foam pump service life is extended, it is allowed to steep
The gear mechanism containing certain solid particle is pumped into formula foam proportioning unit in foam liquid.
The technical solution adopted in the present invention is：A kind of gear mechanism is pumped into formula foam proportioning unit, includes：With
Fire water is the hydro powered gear type hydraulic turbine of power, passes through intermediate bearing mechanism and described hydro powered gear type water wheels
The driving output shaft of machine is connected for the foam impeller pump discharged after normal pressure foam is pressurizeed, and connects hydro powered tooth respectively
The delivery port of the wheeled hydraulic turbine and the liquid outlet of foam impeller pump are used for the fire-fighting mixed liquor export agency for exporting fire-fighting mixed liquor,
Wherein, the described hydro powered gear type hydraulic turbine is principal and subordinate's Double-gear structure, is constituting two teeth of principal and subordinate's bidentate wheel construction
Constant gap is set between wheel, described foam impeller pump is principal and subordinate's dual-rotor structure, is constituting principal and subordinate's dual-rotor structure
Two rotors between be set with constant gap, the hydro powered gear type hydraulic turbine connect driving gear main rotation
Axle constitutes the main rotating shaft in driving output shaft connection foam impeller pump.
The described hydro powered gear type hydraulic turbine includes on hydraulic turbine housing, the side wall of the hydraulic turbine housing respectively
Fire-fighting water inlet and fire-fighting mixture export are provided with, one end of the hydraulic turbine housing is fixedly connected with the first duplex bearing machine
Structure, the other end be fixedly connected be parallel to each other in the second duplex bearing mechanism, the hydraulic turbine housing be provided with the hydraulic turbine actively
Axle and hydraulic turbine driven shaft, one end of the hydraulic turbine driving shaft and hydraulic turbine driven shaft connect the first duplex bearing mechanism respectively,
The other end extends through the second duplex bearing mechanism and is connected in the intermediate bearing mechanism, and key is passed through on the hydraulic turbine driving shaft
Structure connects active waterpower drive gear, and the hydraulic turbine driven shaft connects driven hydro powered gear by bond structure, described
Between the two ends of active waterpower drive gear and driven hydro powered gear and corresponding hydraulic turbine housing and corresponding
It is provided between a pair of Bearning mechanism for the first wear-resistant connecting plate, the active waterpower drive gear and driven waterpower
The gap for preventing from mutually wearing and tearing is formed between drive gear, the hydraulic turbine driving shaft and hydraulic turbine driven shaft close on second pair
This side of Bearning mechanism studs with the second mechanical seal, the second mechanical seal in the part with being in contact on the inside of hydraulic turbine shell end
The second sealing that outside is equipped with for fixing the second mechanical seal contains, and second sealing, which contains, is screwed in the water wheels
The inner side of machine shell end, the end end of the hydraulic turbine driving shaft in intermediate bearing mechanism with the master in foam impeller pump
Rotary shaft shaft end is fixedly connected.
The first described duplex bearing mechanism includes the first Double bearing support, the hydraulic turbine driving shaft and hydraulic turbine driven shaft
Leading section insert to be formed in the binary channels in the first Double bearing support respectively, the port of described first Double bearing support one end passes through
Screw is fixedly connected on correspondence on the end of the hydraulic turbine housing, the axis body of the hydraulic turbine driving shaft and hydraulic turbine driven shaft
The end of first Double bearing support, which is distinguished, is respectively equipped with the first mechanical seal, and each dress is distinguished in the outside of two first mechanical seal again
Have for position the first mechanical seal first sealing contain, two it is described first sealing containing by screw be separately fixed at described in
On first Double bearing support；It is separately provided for supporting water inside the port of two passages of the first Double bearing support other end
First base bearing of turbine active shaft end and for supporting the first of the driven shaft end of the hydraulic turbine from bearing, first twin shaft
Hydraulic turbine drive shaft end cover is provided with the port for being seated against the first base bearing of correspondence, is set in correspondence first from the port of bearing
It is equipped with the driven hubcap of the hydraulic turbine.
The second described duplex bearing mechanism includes the second Double bearing support, and the port of described second Double bearing support one end passes through
Screw is fixedly connected on the end of the hydraulic turbine housing, and the port of the other end is screwed connection intermediate bearing mechanism,
The rearward end of the hydraulic turbine driving shaft and hydraulic turbine driven shaft is penetratingly formed at the double of the second Double bearing support front inner respectively
Passage and formation are in the cavity of the second Double bearing support posterior medial, the described intermediate bearing mechanism of insertion, second duplex bearing
It is separately provided for supporting the second base bearing of hydraulic turbine active shaft end and for supporting in the binary channels of seat front inner
The second of the driven shaft end of the hydraulic turbine is from bearing, and for fixing the second base bearing and second from the first axle pressure-bearing of bearing
Cover, wherein passing through bond structure respectively on the hydraulic turbine driving shaft and hydraulic turbine driven shaft in the second Double bearing support rear chamber body
First synchromesh gear is connected with, is intermeshing between the first synchromesh gear described in two.
Described intermediate bearing mechanism includes one end and is screwed in the connection hydro powered gear type hydraulic turbine
Second Double bearing support and with twin-channel first middle bearing bracket, and it is connected to the first middle bearing bracket other end
Second middle bearing bracket, the second connecting plate, described first are provided between first middle bearing bracket and the second Double bearing support
The binary channels of middle bearing bracket is each provided with the 3rd base bearing for supporting hydraulic turbine active shaft end and for supporting respectively
The 3rd of the driven shaft end of the hydraulic turbine is from bearing, and the end that the hydraulic turbine driving shaft is located at the first middle bearing bracket forms oriented
In the axis hole described in the insertion of main rotating shaft shaft end in interior recessed axis hole, described foam impeller pump with the hydraulic turbine actively
Axle is fixedly connected by bond structure.
The second described middle bearing bracket the hydraulic turbine driving shaft described in correspondence be formed in part with extend through composition
The foam pump driving shaft of foam pump main rotating shaft and the binary channels of foam pump driven shaft, in the hydraulic turbine driven shaft described in correspondence
Part is difference in the entity structure for closing the first middle bearing bracket part, the binary channels of second middle bearing bracket
Be provided with for support the four main of foam pump active shaft end hold and for support the 4th of the driven shaft end of foam pump from
Bearing, the first middle bearing bracket is provided with for fixing the second bearing that four main is held positioned at the second middle bearing bracket side
Gland.
Described foam impeller pump includes to be set respectively on foam rotor pump case, the side wall of the foam rotor pump case
Foam solution import and foam solution outlet are equipped with, one end of the foam rotor pump case is screwed connection foam pump first
Duplex bearing mechanism, the other end is screwed the second foam duplex bearing mechanism of connection, the foam impeller pump enclosure interior phase
Mutual parallel the foam pump driving shaft and foam pump driven shaft that are provided with composition foam pump main rotating shaft, the foam pump driving shaft
The second foam duplex bearing mechanism is connected respectively with one end of foam pump driven shaft, and the other end of the foam pump driving shaft is passed through successively
Wear in the second middle bearing bracket in foam pump the first duplex bearing mechanism and intermediate bearing mechanism, the first middle bearing bracket of insertion,
And be fixedly connected in the first middle bearing bracket with the hydraulic turbine driving shaft in the hydro powered gear type hydraulic turbine, the foam pump
The other end of driven shaft is supported in the second middle bearing bracket through the first duplex bearing of foam pump mechanism, and the foam pump is actively
Foam pump power rotor is connected by bond structure on axle, the foam pump driven shaft connects driven turn of foam pump by bond structure
Son, the two ends of the foam pump power rotor and foam pump driven rotor are separately provided for the 3rd wear-resistant connecting plate,
The gap for preventing from mutually wearing and tearing is formed between the foam pump power rotor and foam pump driven rotor, the foam pump is actively
Rotor and foam pump driven rotor close on this side of the first duplex bearing of foam pump mechanism in the portion contacted with foam rotor pump case
Set up separately and be equipped with by seal and sealing containing the sealing structure constituted and the 4th connecting plate.
Described the first duplex bearing of foam pump mechanism includes having twin-channel Double bearing support of foam pump first, the foam
The port of the first Double bearing support of pump one end is screwed the end for being connected to the foam rotor pump case, the end of the other end
Mouth is screwed the second middle bearing bracket in connection intermediate bearing mechanism, and the foam pump driving shaft and foam pump are driven
The end of axle sequentially pass through to be formed foam pump the first Double bearing support posterior medial binary channels and formed in foam pump first pair
The cavity of bearing block front inner, the described intermediate bearing mechanism of insertion, the first Double bearing support of foam pump posterior medial
Be separately provided for supporting in binary channels the 5th base bearing of foam pump driving shaft and for supporting foam pump driven shaft the
Five from bearing, and for fixing the 5th base bearing and the 5th from the 3rd bearing gland of bearing, wherein positioned at foam pump first
One second is connected with foam pump driving shaft and foam pump driven shaft in the cavity of Double bearing support front portion by bond structure respectively
It is intermeshing between synchromesh gear, the second synchromesh gear described in two.
The second described foam duplex bearing mechanism includes the Double bearing support of foam pump second, the end of the foam pump driving shaft
Portion is supported on the foam by the 6th base bearing being arranged in a passage of the Double bearing support of foam pump second
In the Double bearing support of pump second, the end of the foam pump driven shaft is by being arranged on the another of the Double bearing support of foam pump second
The 6th in individual passage is supported in the Double bearing support of foam pump second from bearing, in the duplex bearing of foam pump second
Seat tool has the 6th base bearing and the 6th to be connected with foam pump end cap, the foam pump by screw from the port of one end of bearing
The other end of two Double bearing supports is screwed connection foam rotor pump case, and the foam pump driving shaft and foam pump are driven
It is respectively provided with the 3rd sealing on axle, the 3rd sealing outside, which is equipped with to be used to fixing the 3rd sealed 3rd sealing, to be contained, described the
Three sealings, which contain to be screwed, to be connected on the Double bearing support of foam pump second.
Described fire-fighting mixed liquor export agency includes connecting line, and the inlet connection foam of the connecting line turns
The foam solution outlet of sub- pump case, the liquid outlet connection of the connecting line is arranged on the fire-fighting of the hydro powered gear type hydraulic turbine
In connecting interface on the wall of mixture export side.
A kind of gear mechanism of the present invention is pumped into formula foam proportioning unit, by the hydro powered gear type hydraulic turbine and bubble
Foam impeller pump is designed to an entirety, and cost is low, and compact conformation, small volume is easy to use, substantially reduces installing space and is applicable
Scope is more extensive, because volumetric efficiency is high, the fire water pressure that system will consume less.To foam solution, fire water cleannes
It is required that low, it is allowed to contain a small amount of solid particle in foam solution and fire water, foam solution can add arbitrarily, it is ensured that fire-fighting continues
Property.Foam solution mixed proportion is stable.Constant gap is kept between hydraulic turbine driving gear and driven gear in the present invention, and
And preset clearance is very small between two gear rotors of the hydraulic turbine, its volumetric efficiency is higher than the vane type hydraulic turbine and screw water wheels
Machine.
The hydro powered gear type hydraulic turbine in the present invention, between active waterpower drive gear and driven hydro powered gear
Constant gap is kept, when fire water is by active hydro powered rotor and driven hydro powered gear, the moment of torsion of generation passes through
A pair of first synchromesh gears are transmitted, it is to avoid active waterpower drive gear produces mill when driving driven hydro powered pinion rotation
Damage, while the active waterpower drive gear of the hydro powered gear type hydraulic turbine uses rolling bearing branch with driven hydro powered gear
Support, is not in contact with each other between gear and housing, it also avoid the abrasion between gear and housing, extend hydro powered gear type water
Turbine A service life, simultaneously, it is allowed to contain certain solid particle in fire water.
Foam impeller pump in the present invention, conveys the foam pump power rotor and foam pump driven rotor of foam solution by front and rear
Bearings, between foam pump power rotor and foam pump driven rotor, foam pump power rotor and foam pump driven rotor with
It is not in contact with each other between pump case, foam pump power rotor and foam pump driven rotor are by active synchronization gear and driven synchromesh gear belt
It is dynamic, it is ensured that between foam pump power rotor and foam pump driven rotor, foam pump power rotor and foam pump driven rotor and pump
Do not worn and torn between shell.Also without foam solution lubrication, it is allowed to contain certain minute solid particles, operation safety in foam solution
Reliably, meanwhile, be designed type selecting according to certain volumetric ratio, fire water and foam solution accurately mixed proportion can be realized.
The rotor outer layer of rotator type foam pump in the present invention can use preset clearance between rubber coated, two rotors
Close to 0, its volumetric efficiency is higher than gear type foam pump.
Brief description of the drawings
Fig. 1 is the overall structure diagram that a kind of gear mechanism of the invention is pumped into formula foam proportioning unit；
Fig. 2 is Fig. 1 top view；
Fig. 3 is Fig. 1 A-A sectional views；
Fig. 4 is Fig. 1 B-B sectional views.
In figure
1：Foam pump end cap 2a：6th base bearing
2b：6th from bearing 3：3rd seal contains
4：The second Double bearing support of foam pump 5：Foam pump driving shaft
6：Foam rotor pump case 7：Foam pump power rotor
8：Sealing structure 9：4th connecting plate
10：The first Double bearing support of foam pump 11a：Four main is held
11b：4th from bearing 12：Second synchromesh gear
13a：5th base bearing 13b：5th from bearing
14：3rd bearing gland 15：Foam pump driven rotor
16：Foam pump driven shaft 17：Second middle bearing bracket
18：First middle bearing bracket 19：Second bearing gland
20a：3rd base bearing 20b：3rd from bearing
21：Second connecting plate 22；First synchromesh gear
23a：Second base bearing 23b：Second from bearing
24：Second Double bearing support 25：Clutch shaft bearing gland
26：Second sealing contains 27：Second mechanical seal
28：First connecting plate 29：Hydraulic turbine housing
30：Bond structure 31：Active waterpower drive gear
32：First mechanical seal 33：First sealing contains
34：Sealing ring 35：First Double bearing support
36a：First base bearing 36b：First from bearing
37：Hydraulic turbine driving shaft 38：Hydraulic turbine drive shaft end cover
39：Hydraulic turbine driven shaft 40：Driven hydro powered gear
41：The driven hubcap 42 of the hydraulic turbine：Connecting interface
43：3rd seal 44：Foam solution import
45：Foam solution outlet 46：Connecting line
47：Fire-fighting water inlet 48：Fire-fighting mixture export
49：3rd connecting plate A：The hydro powered gear type hydraulic turbine
B：Foam impeller pump C：First duplex bearing mechanism
D：Intermediate bearing mechanism E：Second duplex bearing mechanism
F：The first duplex bearing of foam pump mechanism G：Second foam duplex bearing mechanism
H：Fire-fighting mixed liquor export agency
Embodiment
Formula foam proportioning unit is pumped into reference to embodiment and accompanying drawing to a kind of gear mechanism of the present invention to make
Describe in detail.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of gear mechanism of the invention is pumped into formula foam proportioning unit, includes：
Hydro powered gear type hydraulic turbine A by power of fire water, passes through intermediate bearing mechanism D and described hydro powered gear type
Hydraulic turbine A driving output shaft is connected for the foam impeller pump B discharged after normal pressure foam is pressurizeed, and connects waterpower respectively
The wheeled hydraulic turbine A of sliding tooth delivery port and foam impeller pump B liquid outlet are used for the fire-fighting mixed liquor for exporting fire-fighting mixed liquor
Export agency H, wherein, described hydro powered gear type hydraulic turbine A is principal and subordinate's Double-gear structure, is constituting principal and subordinate's bidentate rolling hitch
Constant gap is set between two gears of structure, described foam impeller pump B is principal and subordinate's dual-rotor structure, is constituting principal and subordinate
It is set with constant gap, the hydro powered gear type hydraulic turbine A and is connected actively between two rotors of dual-rotor structure
The main rotating shaft of gear constitutes the main rotating shaft in driving output shaft connection foam impeller pump B.
Described hydro powered gear type hydraulic turbine A includes hydraulic turbine housing 29, the side wall of the hydraulic turbine housing 29
On be respectively arranged with fire-fighting water inlet 47 and fire-fighting mixture export 48, one end of the hydraulic turbine housing 29 is fixedly connected with
A pair of Bearning mechanism C, the other end is fixedly connected with setting of being parallel to each other in the second duplex bearing mechanism E, the hydraulic turbine housing 29
It is equipped with hydraulic turbine driving shaft 37 and hydraulic turbine driven shaft 39, one end point of the hydraulic turbine driving shaft 37 and hydraulic turbine driven shaft 39
The first duplex bearing mechanism C is not connected, and the other end extends through the second duplex bearing mechanism E and is connected on the intermediate bearing mechanism D,
Active waterpower drive gear 31 is connected by bond structure 30 on the hydraulic turbine driving shaft 37, the hydraulic turbine driven shaft 39 passes through
Bond structure 30 connects driven hydro powered gear 40, the two of the active waterpower drive gear 31 and driven hydro powered gear 40
It is provided between end and corresponding hydraulic turbine housing 29 and between the first corresponding duplex bearing mechanism C for wear-resistant
First connecting plate 28, being formed between the active waterpower drive gear 31 and driven hydro powered gear 40 prevents mutually abrasion
Gap, the hydraulic turbine driving shaft 37 and hydraulic turbine driven shaft 39 close on second this side of duplex bearing mechanism E with the hydraulic turbine
The part that the tip inside of housing 29 is in contact studs with the second mechanical seal 27, and the outside of the second mechanical seal 27, which is equipped with, is used to fixing the
Second sealing of two mechanical seals 27 contains 26, and second sealing is screwed in the end of hydraulic turbine housing 29 containing 26
Inner side, the end end of the hydraulic turbine driving shaft 37 in intermediate bearing mechanism D with the main rotating shaft in foam impeller pump B
Shaft end is fixedly connected.
The first described duplex bearing mechanism C includes the first Double bearing support 35, the hydraulic turbine driving shaft 37 and the hydraulic turbine
The leading section of driven shaft 39 is inserted to be formed in the binary channels in the first Double bearing support 35 respectively, first Double bearing support 35 1
The port at end is screwed the end for being connected to the hydraulic turbine housing 29, the hydraulic turbine driving shaft 37 and the hydraulic turbine from
The end of the first Double bearing support 35 of correspondence is respectively equipped with the first mechanical seal 32, two first machines respectively on the axis body of moving axis 39
The outside of tool sealing 32 is respectively equipped with respectively again is used for the first sealing for positioning the first mechanical seal 32 containing 33, and two described first close
Envelope is separately fixed at containing 33 by screw on the first described Double bearing support 35；Two of the other end of first Double bearing support 35
It is separately provided for supporting the first base bearing 36a of the end of hydraulic turbine driving shaft 37 and for supporting water inside the port of passage
The first of the end of turbine driven shaft 39 is from bearing 36b, and first Double bearing support 35 is on the first base bearing 36a of correspondence port
Hydraulic turbine drive shaft end cover 38 is provided with, the driven hubcap 41 of the hydraulic turbine is provided with from bearing 36b port in correspondence first.
The second described duplex bearing mechanism E includes the second Double bearing support 24, the end of described one end of second Double bearing support 24
Mouth is screwed the end for being connected to the hydraulic turbine housing 29, and the port of the other end is screwed connection jackshaft
Mechanism D is held, the rearward end of the hydraulic turbine driving shaft 37 and hydraulic turbine driven shaft 39 is penetratingly formed at the second Double bearing support respectively
The binary channels of 24 front inners and formation are in the described intermediate bearing mechanism of the cavity insertion of the posterior medial of the second Double bearing support 24
It is separately provided for supporting the end of hydraulic turbine driving shaft 37 in D, the binary channels of the front inner of the second Double bearing support 24
Second base bearing 23a and for supporting the second of the end of hydraulic turbine driven shaft 39 from bearing 23b, and for fixing the second main shaft
Clutch shaft bearing glands 25 of the 23a and second from bearing 23b is held, wherein the hydraulic turbine in the rear chamber body of the second Double bearing support 24
First synchromesh gear 22 is connected with by bond structure respectively on driving shaft 37 and hydraulic turbine driven shaft 39, described in two
It is intermeshing between one synchromesh gear 22.
The hydraulic turbine driving shaft and the hydraulic turbine being supported in described hydro powered gear type hydraulic turbine A on bearing are driven
Be respectively provided with the first synchromesh gear on axle, the first synchromesh gear be arranged on the second Double bearing support and the first middle bearing bracket it
Between, by oil lubrication.Active waterpower drive gear on hydraulic turbine driving shaft drives with the driven waterpower on hydraulic turbine driven shaft
Mutually it is not in contact with each other between moving gear, without moment of torsion transmission
Described intermediate bearing mechanism D includes one end and is screwed in connection hydro powered gear type hydraulic turbine A
The second Double bearing support 24 and with twin-channel first middle bearing bracket 18, and be connected to first middle bearing bracket 18
The second company is provided between second middle bearing bracket 17 of the other end, the Double bearing support 24 of the first middle bearing bracket 18 and second
Fishplate bar 21, the binary channels of first middle bearing bracket 18 is each provided with for supporting the end of hydraulic turbine driving shaft 37 respectively
Three base bearing 20a and for supporting the 3rd of the end of hydraulic turbine driven shaft 39 from bearing 20b, the hydraulic turbine driving shaft 37 is located at
The end of first middle bearing bracket 18 is formed with the main rotating shaft shaft end in the axis hole being inwardly recessed, described foam impeller pump B
It is fixedly connected in the described axis hole of insertion with the hydraulic turbine driving shaft 37 by bond structure.
The second described middle bearing bracket 17 the hydraulic turbine driving shaft 37 described in correspondence be formed in part with extend through
The foam pump driving shaft 5 of foam pump main rotating shaft and the binary channels of foam pump driven shaft 16 are constituted, in the hydraulic turbine described in correspondence
The part of driven shaft 39 is the entity structure for closing the part of the first middle bearing bracket 18, second middle bearing bracket 17
Binary channels in be separately provided for supporting the four main of the end of foam pump driving shaft 5 to hold 11a and for supporting foam pump
The 4th of the end of driven shaft 16 is provided with from bearing 11b, the first middle bearing bracket 18 positioned at the side of the second middle bearing bracket 17
11a second bearing gland 19 is held for fixing four main.
Described foam impeller pump B includes and divided on foam rotor pump case 6, the side wall of the foam rotor pump case 6
Foam solution import 44 and foam solution outlet 45 are not provided with, and one end of the foam rotor pump case 6 is screwed connection
Foam pump the first duplex bearing mechanism F, the other end is screwed the second foam duplex bearing mechanism G of connection, the foam rotor
What is be parallel to each other inside pump case 6 is provided with the foam pump driving shaft 5 and foam pump driven shaft 16 for constituting foam pump main rotating shaft,
One end of the foam pump driving shaft 5 and foam pump driven shaft 16 connects the second foam duplex bearing mechanism G, the foam pump respectively
The other end of driving shaft 5 sequentially passes through the second middle bearing bracket in the first duplex bearing of foam pump mechanism F and intermediate bearing mechanism D
17, insert in the first middle bearing bracket 18, and the water in the first middle bearing bracket 18 and in hydro powered gear type hydraulic turbine A
Turbine driving shaft 37 is fixedly connected, and the other end of the foam pump driven shaft 16 is propped up through the first duplex bearing of foam pump mechanism F
Support connects foam pump power rotor 7 on the foam pump driving shaft 5 in the second middle bearing bracket 17 by bond structure, described
Foam pump driven shaft 16 connects foam pump driven rotor 15 by bond structure, and the foam pump power rotor 7 and foam pump are driven
The two ends of rotor 15 are separately provided for the 3rd wear-resistant connecting plate 49, the foam pump power rotor 7 and foam pump from
The gap for preventing from mutually wearing and tearing is formed between dynamic rotor 15, the foam pump power rotor 7 and foam pump driven rotor 15 face
Nearly foam pump this side of the first duplex bearing mechanism F is provided with the part contacted with foam rotor pump case 6 by seal and close
Seal the connecting plate 9 of sealing structure 8 and the 4th containing composition.
Foam pump power rotor 7 and foam pump driven rotor 15 in the foam impeller pump B, can use two lobe rotor
Or the structure of three lobe rotor or four leaf rotors or five leaf rotors or leafy rotor.To prevent foam pump power rotor 7 and foam pump
Driven rotor 15 is blocked by big foreign matter, and rubber can be used by being adopted in foam pump power rotor 7 and the outer layer of foam pump driven rotor 15
Cladding.
Described the first duplex bearing of foam pump mechanism F includes having twin-channel the first Double bearing support of foam pump 10, described
The port of the one end of the first Double bearing support of foam pump 10 is screwed the end for being connected to the foam rotor pump case 6, separately
The port of one end is screwed the second middle bearing bracket 17 in connection intermediate bearing mechanism D, the foam pump driving shaft 5
The binary channels and shape to be formed in the posterior medial of the first Double bearing support of foam pump 10 are sequentially passed through with the end of foam pump driven shaft 16
Into the described intermediate bearing mechanism D of the cavity insertion in the front inner of the first Double bearing support of foam pump 10, the foam pump first
Be separately provided for supporting in the binary channels of the posterior medial of Double bearing support 10 foam pump driving shaft 5 the 5th base bearing 13a and
For supporting the 5th of foam pump driven shaft 16 from bearing 13b, and for fixing the 5th base bearing 13a and the 5th from bearing
13b 3rd bearing gland 14, wherein foam pump driving shaft 5 and bubble in the anterior cavity of the first Double bearing support of foam pump 10
Second synchromesh gear 12 is connected with by bond structure respectively on foam pump driven shaft 16, the second synchromesh gear 12 described in two
Between for intermeshing.
The second described foam duplex bearing mechanism G includes the second Double bearing support of foam pump 4, the foam pump driving shaft 5
End institute is supported on by the 6th base bearing 2a being arranged in a passage of second Double bearing support of foam pump 4
State in the second Double bearing support of foam pump 4, the end of the foam pump driven shaft 16 is by being arranged on the twin shaft of foam pump second
The 6th in another passage of bearing 4 is supported in second Double bearing support of foam pump 4 from bearing 2b, in the bubble
There is the second Double bearing support of foam pump 4 the 6th base bearing 2a and the 6th to be connected with foam by screw from the port of bearing 2b one end
Pump end cap 1, the other end of second Double bearing support of foam pump 4 is screwed connection foam rotor pump case 6, the bubble
The 3rd sealing 43 is respectively provided with foam pump driving shaft 5 and foam pump driven shaft 16, the outside of the 3rd sealing 43 is equipped with for solid
3rd sealing of fixed 3rd sealing 43 contains 3, and the 3rd sealing is screwed containing 3 is connected to the twin shaft of foam pump second
In bearing 4.
The foam pump driving shaft being supported in described foam impeller pump D on bearing with filling respectively on foam pump driven shaft
There is the second synchromesh gear, the second synchromesh gear is arranged between the second middle bearing bracket and the Double bearing support of foam pump first, by
Oil lubrication.Between the foam pump driven rotor on foam pump power rotor and foam pump driven shaft on foam pump driving shaft
Mutually it is not in contact with each other, the moment of torsion of foam pump driven shaft is transmitted by synchromesh gear.
Described fire-fighting mixed liquor export agency H includes connecting line 46, the inlet connection of the connecting line 46
The foam solution outlet 45 of foam rotor pump case 6, the liquid outlet connection of the connecting line 46 is arranged on hydro powered gear type
In connecting interface 42 on the hydraulic turbine A side wall of fire-fighting mixture export 48.
A kind of gear mechanism of the present invention is pumped into the operation principle of formula foam proportioning unit：Fire water is driven by waterpower
Moving gear formula hydraulic turbine A fire-fighting water inlet 47 enters in hydraulic turbine housing 29, and the active waterpower on hydraulic turbine driving shaft 37 is driven
Driven hydro powered gear 40 and the formation annular seal space of hydraulic turbine housing 29, the hydraulic turbine on moving gear 31 and hydraulic turbine driven shaft 39
The driven hydro powered gear 40 on active waterpower drive gear 31 and hydraulic turbine driven shaft 39 on driving shaft 37 disappears in high pressure
Being rotated by for waterproof, drives on the synchromesh gear 22 and driven shaft on hydraulic turbine driving shaft 37 39 synchromesh gear 22 synchronous
Rotation.
Foam pump driving shaft 5 in foam impeller pump B passes through the water wheels owner that is embedded in hydro powered gear type hydraulic turbine A
Be connected with each other in moving axis 37, thus with hydro powered gear type hydraulic turbine A synchronous rotaries.And pass through foam pump driving shaft 5 and bubble
The second synchromesh gear 12 on foam pump driven shaft 16 drives foam pump driven shaft 16 to rotate.
Foam solution enters pump chamber by foam impeller pump B foam solution import 44, by foam pump power rotor and foam
To foam solution outlet 45 after the pressurization of pump driven rotor, foam solution is mixed by connecting line 46 with fire water, and formation meets fire-fighting
It is required that foam mixing liquid, carry out fire-fighting fire extinguishing operation.
Claims (10)
1. a kind of gear mechanism is pumped into formula foam proportioning unit, it is characterised in that include：Using fire water as the water of power
The wheeled hydraulic turbine of power sliding tooth (A), passes through the drive of intermediate bearing mechanism (D) and the described hydro powered gear type hydraulic turbine (A)
Dynamic output shaft is connected for the foam impeller pump (B) discharged after normal pressure foam is pressurizeed, and connects hydro powered gear respectively
The delivery port of the formula hydraulic turbine (A) and the liquid outlet of foam impeller pump (B) are used for the fire-fighting mixed liquor export for exporting fire-fighting mixed liquor
Mechanism (H), wherein, the described hydro powered gear type hydraulic turbine (A) is principal and subordinate's Double-gear structure, is constituting principal and subordinate's bidentate rolling hitch
Constant gap is set between two gears of structure, described foam impeller pump (B) is principal and subordinate's dual-rotor structure, is constituting master
Connected from being set between two rotors of dual-rotor structure in constant gap, the hydro powered gear type hydraulic turbine (A)
The main rotating shaft of driving gear constitutes the main rotating shaft in driving output shaft connection foam impeller pump (B).
2. a kind of gear mechanism according to claim 1 is pumped into formula foam proportioning unit, it is characterised in that described
The hydro powered gear type hydraulic turbine (A) includes to be set respectively on hydraulic turbine housing (29), the side wall of the hydraulic turbine housing (29)
Fire-fighting water inlet (47) and fire-fighting mixture export (48) are equipped with, one end of the hydraulic turbine housing (29) is fixedly connected with first
Duplex bearing mechanism (C), the other end is fixedly connected with the second duplex bearing mechanism (E), the hydraulic turbine housing (29) and is parallel to each other
Be provided with hydraulic turbine driving shaft (37) and hydraulic turbine driven shaft (39), the hydraulic turbine driving shaft (37) and hydraulic turbine driven shaft
(39) one end connects the first duplex bearing mechanism (C) respectively, the other end extend through the second duplex bearing mechanism (E) be connected to it is described
In intermediate bearing mechanism (D), active waterpower drive gear is connected by bond structure (30) on the hydraulic turbine driving shaft (37)
(31), the hydraulic turbine driven shaft (39) connects driven hydro powered gear (40), the active waterpower by bond structure (30)
It is between the two ends of drive gear (31) and driven hydro powered gear (40) and corresponding hydraulic turbine housing (29) and corresponding
The first duplex bearing mechanism (C) between be provided with for wear-resistant the first connecting plate (28), the active waterpower sliding tooth
The gap for preventing from mutually wearing and tearing, the hydraulic turbine driving shaft (37) are formed between wheel (31) and driven hydro powered gear (40)
Second duplex bearing mechanism (E) this side is closed on hydraulic turbine driven shaft (39) to be in contact with hydraulic turbine housing (29) tip inside
Part stud with the second mechanical seal (27), being equipped with the outside of the second mechanical seal (27) is used to fix the second mechanical seal (27)
Second sealing contains (26), and second sealing is screwed in the inner side of hydraulic turbine housing (29) end containing (26),
Main rotating shaft of the end end of the hydraulic turbine driving shaft (37) in intermediate bearing mechanism (D) and in foam impeller pump (B)
Shaft end is fixedly connected.
3. a kind of gear mechanism according to claim 2 is pumped into formula foam proportioning unit, it is characterised in that described
First duplex bearing mechanism (C) includes the first Double bearing support (35), the hydraulic turbine driving shaft (37) and hydraulic turbine driven shaft
(39) leading section is inserted to be formed in the binary channels in the first Double bearing support (35) respectively, first Double bearing support (35) one
The port at end is screwed the end for being connected to the hydraulic turbine housing (29), the hydraulic turbine driving shaft (37) and water wheels
The end of the first Double bearing support of correspondence (35) is respectively equipped with the first mechanical seal (32), two respectively on the axis body of machine driven shaft (39)
The first sealing that the outside of first mechanical seal (32) is respectively equipped with for positioning the first mechanical seal (32) respectively again contains
(33), two first sealings are separately fixed at containing (33) by screw on described the first Double bearing support (35)；Described
Support hydraulic turbine driving shaft (37) end is separately provided for inside the port of two passages of one Double bearing support (35) other end
First base bearing (36a) in portion and for supporting the first of hydraulic turbine driven shaft (39) end from bearing (36b), described first couple
Bearing block (35) is provided with hydraulic turbine drive shaft end cover (38) on the port of the first base bearing of correspondence (36a), in correspondence first
The driven hubcap of the hydraulic turbine (41) is provided with from bearing (36b) port.
4. a kind of gear mechanism according to claim 2 is pumped into formula foam proportioning unit, it is characterised in that described
Second duplex bearing mechanism (E) includes the second Double bearing support (24), and the port of described second Double bearing support (24) one end passes through spiral shell
Silk is fixedly connected on the end of the hydraulic turbine housing (29), and the port of the other end is screwed connection intermediate bearing mechanism
(D), the rearward end of the hydraulic turbine driving shaft (37) and hydraulic turbine driven shaft (39) is penetratingly formed at the second Double bearing support respectively
(24) binary channels of front inner and formation are in the cavity of the second Double bearing support (24) posterior medial, the described intermediate bearing of insertion
It is separately provided for supporting hydraulic turbine driving shaft in mechanism (D), the binary channels of the second Double bearing support (24) front inner
(37) the second base bearing (23a) of end and for supporting the second of hydraulic turbine driven shaft (39) end from bearing (23b), and
For fixing the second base bearing (23a) and second from the clutch shaft bearing gland (25) of bearing (23b), wherein positioned at the second duplex bearing
One is connected with hydraulic turbine driving shaft (37) and hydraulic turbine driven shaft (39) in seat (24) rear chamber body by bond structure respectively
It is intermeshing between individual first synchromesh gear (22), the first synchromesh gear (22) described in two.
5. a kind of gear mechanism according to claim 1 is pumped into formula foam proportioning unit, it is characterised in that described
Intermediate bearing mechanism (D) includes the second twin shaft that one end is screwed in the connection hydro powered gear type hydraulic turbine (A)
Bearing (24) and with twin-channel first middle bearing bracket (18), and to be connected to first middle bearing bracket (18) another
Second middle bearing bracket (17) at end, second is provided between first middle bearing bracket (18) and the second Double bearing support (24)
Connecting plate (21), the binary channels of first middle bearing bracket (18) is each provided with being used to support hydraulic turbine driving shaft (37) respectively
3rd base bearing (20a) of end and for supporting the 3rd of hydraulic turbine driven shaft (39) end from bearing (20b), the water wheels
The end that owner's moving axis (37) is located at the first middle bearing bracket (18) is formed with the axis hole being inwardly recessed, described foam impeller pump
(B) it is fixedly connected in the axis hole described in the insertion of main rotating shaft shaft end in the hydraulic turbine driving shaft (37) by bond structure.
6. a kind of gear mechanism according to claim 5 is pumped into formula foam proportioning unit, it is characterised in that described
Second middle bearing bracket (17) the hydraulic turbine driving shaft (37) described in correspondence be formed in part with extend through composition foam pump
The foam pump driving shaft (5) of main rotating shaft and the binary channels of foam pump driven shaft (16), in the hydraulic turbine driven shaft described in correspondence
(39) part is the entity structure for closing the first middle bearing bracket (18) part, second middle bearing bracket (17)
Binary channels in be separately provided for support foam pump driving shaft (5) end four main hold (11a) and for support bubble
The 4th of foam pump driven shaft (16) end is from bearing (11b), and the first middle bearing bracket (18) is positioned at the second middle bearing bracket
(17) side is provided with for fixing the second bearing gland (19) that four main holds (11a).
7. a kind of gear mechanism according to claim 1 is pumped into formula foam proportioning unit, it is characterised in that described
Foam impeller pump (B) includes to be respectively arranged with foam rotor pump case (6), the side wall of the foam rotor pump case (6)
Foam solution import (44) and foam solution outlet (45), one end of the foam rotor pump case (6) are screwed connection bubble
The first duplex bearing of foam pump mechanism (F), the other end is screwed the second foam duplex bearing mechanism (G) of connection, and the foam turns
Being provided with of being parallel to each other inside sub- pump case (6) constitute the foam pump driving shaft (5) and foam pump of foam pump main rotating shaft from
One end of moving axis (16), the foam pump driving shaft (5) and foam pump driven shaft (16) connects the second foam duplex bearing machine respectively
Structure (G), the other end of the foam pump driving shaft (5) sequentially passes through the first duplex bearing of foam pump mechanism (F) and intermediate bearing machine
In the second middle bearing bracket (17) in structure (D), the first middle bearing bracket of insertion (18), and in the first middle bearing bracket (18)
It is fixedly connected with the hydraulic turbine driving shaft (37) in the hydro powered gear type hydraulic turbine (A), the foam pump driven shaft (16)
The other end is supported in the second middle bearing bracket (17) through the first duplex bearing of foam pump mechanism (F), and the foam pump is actively
Foam pump power rotor (7) is connected by bond structure on axle (5), the foam pump driven shaft (16) connects foam by bond structure
The two ends of pump driven rotor (15), the foam pump power rotor (7) and foam pump driven rotor (15) are separately provided for
The 3rd wear-resistant connecting plate (49), is formed with anti-between the foam pump power rotor (7) and foam pump driven rotor (15)
The gap only mutually worn and torn, the foam pump power rotor (7) and foam pump driven rotor (15) close on the twin shaft of foam pump first
Mechanism (F) this side is held to be provided with by seal and seal close containing what is constituted in the part contacted with foam rotor pump case (6)
Seal structure (8) and the 4th connecting plate (9).
8. a kind of gear mechanism according to claim 7 is pumped into formula foam proportioning unit, it is characterised in that described
The first duplex bearing of foam pump mechanism (F) includes having twin-channel Double bearing support of foam pump first (10), the foam pump first
The port of Double bearing support (10) one end is screwed the end for being connected to the foam rotor pump case (6), the other end
Port is screwed the second middle bearing bracket (17) in connection intermediate bearing mechanism (D), the foam pump driving shaft (5)
The binary channels to be formed in the Double bearing support of foam pump first (10) posterior medial is sequentially passed through with the end of foam pump driven shaft (16)
With formation in the cavity of the Double bearing support of foam pump first (10) front inner, the described intermediate bearing mechanism (D) of insertion, the bubble
It is separately provided for supporting the 5th of foam pump driving shaft (5) in the binary channels of the Double bearing support of foam pump first (10) posterior medial
Base bearing (13a) and for supporting the 5th of foam pump driven shaft (16) from bearing (13b), and for fixing the 5th base bearing
(13a) and the 5th from the 3rd bearing gland (14) of bearing (13b), wherein positioned at the anterior chamber of the Double bearing support of foam pump first (10)
Second synchromesh gear is connected with by bond structure respectively on internal foam pump driving shaft (5) and foam pump driven shaft (16)
(12) it is, intermeshing between the second synchromesh gear (12) described in two.
9. a kind of gear mechanism according to claim 7 is pumped into formula foam proportioning unit, it is characterised in that described
Second foam duplex bearing mechanism (G) includes the Double bearing support of foam pump second (4), and the end of the foam pump driving shaft (5) leads to
Cross the 6th base bearing (2a) being arranged in a passage of the Double bearing support of foam pump second (4) and be supported on the bubble
In the Double bearing support of foam pump second (4), the end of the foam pump driven shaft (16) is by being arranged on the twin shaft of foam pump second
The 6th in another passage of bearing (4) is supported in the Double bearing support of foam pump second (4) from bearing (2b),
The Double bearing support of foam pump second (4) has to be passed through on the port of the 6th base bearing (2a) and the 6th one end from bearing (2b)
Screw is connected with foam pump end cap (1), and the other end of the Double bearing support of foam pump second (4) is screwed connection foam and turned
The 3rd sealing (43) is respectively provided with sub- pump case (6), the foam pump driving shaft (5) and foam pump driven shaft (16), it is described
The 3rd sealing for fixing the 3rd sealing (43) is housed on the outside of the 3rd sealing (43) and contains (3), the 3rd sealing passes through containing (3)
Screw is fixedly connected on the Double bearing support of foam pump second (4).
10. a kind of gear mechanism according to claim 1 is pumped into formula foam proportioning unit, it is characterised in that described
Fire-fighting mixed liquor export agency (H) include connecting line (46), the inlet connection foam of the connecting line (46) turns
The foam solution outlet (45) of sub- pump case (6), the liquid outlet connection of the connecting line (46) is arranged on hydro powered gear type
In connecting interface (42) on fire-fighting mixture export (48) side wall of the hydraulic turbine (A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530251.4A CN107281670A (en) | 2017-07-01 | 2017-07-01 | A kind of gear mechanism is pumped into formula foam proportioning unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710530251.4A CN107281670A (en) | 2017-07-01 | 2017-07-01 | A kind of gear mechanism is pumped into formula foam proportioning unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107281670A true CN107281670A (en) | 2017-10-24 |
Family
ID=60099636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710530251.4A Pending CN107281670A (en) | 2017-07-01 | 2017-07-01 | A kind of gear mechanism is pumped into formula foam proportioning unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107281670A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108619646A (en) * | 2018-05-31 | 2018-10-09 | 厚力德机器（杭州）有限公司 | A kind of emergent fire plant of hydro powered |
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| CN106014860A (en) * | 2016-08-10 | 2016-10-12 | 刘明生 | Wind or water driven power machine or generator |
| CN205924767U (en) * | 2016-08-15 | 2017-02-08 | 杭州新纪元消防科技有限公司 | Formula proportioning device is gone into to mechanical pump |
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| JPH06262053A (en) * | 1993-03-11 | 1994-09-20 | Nippon Dry Chem Co Ltd | Foaming chemicals mixing apparatus |
| CN201079648Y (en) * | 2007-09-06 | 2008-07-02 | 公安部上海消防研究所 | Electric gear type foam pump package |
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Application publication date: 20171024 |
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