CN203989596U - A kind of liquid fraction mixing arrangement - Google Patents
A kind of liquid fraction mixing arrangement Download PDFInfo
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- CN203989596U CN203989596U CN201420445350.4U CN201420445350U CN203989596U CN 203989596 U CN203989596 U CN 203989596U CN 201420445350 U CN201420445350 U CN 201420445350U CN 203989596 U CN203989596 U CN 203989596U
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Abstract
The utility model discloses a kind of liquid fraction mixing arrangement.Include the displacement pump of water inlet, delivery port, impeller, impeller shaft is at least in transmission connection with a driven displacement pump, and driven displacement pump has independently liquid inlet and liquid outlet, and liquid outlet is connected with the delivery port of displacement pump by fluid pipeline; Between liquid outlet and fluid pipeline, have three-way control valve, three-way control valve one port of export connects driven displacement pump liquid inlet by by-pass line; The liquid inlet of driven displacement pump is connected with water inlet by pipeline, back flush valves.The utility model adopts synchronization transmission structure, particularly coaxial transmission structure, has realized the adjustable mixing of stablizing of plurality of liquid ratio in conjunction with bypass line and three-way control valve; The hydraulic loss of coaxial transmission structure device is not more than 20%, and mixing efficiency is high, and ratio adjustable range is large, accurate; The utility model can also carry out the backwash of driven displacement pump and clean, and ensures the clean of equipment and normally uses and increase the service life.
Description
Technical field
The utility model belongs to fire-fighting equipment and manufactures and designs field, especially belongs to the field that manufactures and designs of foam, water fire-fighting mixing apparatus, particularly a kind of liquid fraction mixing arrangement.
Background technology
In fire-fighting fire-extinguishing equipment, foam, water are blended in while realizing the fire extinguishing of multiclass fire and usually apply, froth fire extinguishing system has safe and reliable, economical and practical, fire-fighting efficiency high, especially utilize class A foam to put out solid fire, the category-B foam category-B fire of putting out a fire to save life and property has more outstanding superiority, is the basic mode of putting out a fire to save life and property of current home and abroad solid and oil fire.Foam proportioner is froth fire extinguishing system " nerve center ", and the quality of its service behaviour is directly connected to the success or failure that froth fire extinguishing system fights a fire.Foam proportioner has the types such as pressure air-foam proportioner, circular pump type foam proportioner, in-line foam concentrate inducer, electronic control type proportion mixer.
As pressure type foam proportioner is made up of water inlet pipe, drain pipe, mixing chamber, anemostat etc.Blender mainly utilizes venturi principle, when press water passing ratio blender, produce negative pressure differential therein and between foam solution basin, make basin inner foam liquid enter blender by the foam solution pipe being connected with blender, in tube connector, there is the orifice plate of controlling foam solution flow, just form foam---the water mixed liquid of stablizing mixed proportion.
If negative line pressure formula foam proportioner working method is that press water is from import enters blender, most of water sprays into anemostat at a high speed through nozzle, between nozzle and anemostat, forms negative pressuren zone, and foam solution is inhaled into negative pressuren zone by liquid sucting port, enter anemostat with press water simultaneously, flow out from outlet; After also having sub-fraction press water to mix with the blended liquid phase of anemostat outflow by control valve, flow out from outlet.The mixing ratio of the adjustable mixed liquor of handle of turn control valve.
Traditional proportioner, can make the main flow WATER AS FLOW MEDIUM pressure loss reach 35%, and efficiency is low; When use, in the time that larger variation occurs for main pipeline flow and pressure, the liquid fraction precision sucking can reduce greatly, and ratio Wu is Cha≤and ± 30%, affect fire-fighting efficiency.
Summary of the invention
The utility model discloses a kind of liquid fraction mixing arrangement according to the deficiencies in the prior art.Problem to be solved in the utility model is to provide a kind of for froth fire extinguishing system, and forming predetermined liquids ratio is stablized adjustable liquid fraction mixing arrangement.
The utility model is achieved through the following technical solutions:
Liquid fraction mixing arrangement, include the displacement pump of water inlet, delivery port, impeller, it is characterized in that: described impeller has rotating shaft, rotating shaft is at least in transmission connection with a driven displacement pump, each driven displacement pump has independently liquid inlet and liquid outlet, and described liquid outlet is connected with the delivery port of displacement pump by fluid pipeline.
Between described liquid outlet and fluid pipeline, be connected with three-way control valve, three-way control valve one port of export connects driven displacement pump liquid inlet by by-pass line.
The liquid inlet of described each driven displacement pump is connected with water inlet by pipeline, back flush valves.
Described displacement pump is self hydro powered displacement pump or supplies power drive displacement pump outward.Self hydro powered displacement pump refers to that current that displacement pump impeller is entered by water inlet provide power drive to realize and rotate; The outer power drive displacement pump that supplies refers to that displacement pump provides power to realize by power-equipments such as peripheral hardware motors and rotates.
It is coaxial transmission or chain Synchronous Transmission or gear synchronous transmission that above-mentioned rotating shaft and driven displacement pump are in transmission connection.
The utility model is mainly used in froth fire extinguishing system, for substituting traditional foam proportioning unit.The driven displacement pump equipment of multiple rotator types of coaxial or Synchronous Transmission is installed in the system that the utility model device proposes need mix by a certain percentage at plurality of liquid, is realized plurality of liquid ratio and mix.
The utility model displacement pump drives multiple driven displacement pumps by same rotating shaft or Synchronous Transmission, and driven displacement pump extracts other liquid of certain flow by design, mix with the fluid of mixed charge net.
Displacement pump is rotor structure, and rotating speed is 3～600rpm, pressure limit 0.1～1.6MPa, range of flow 0.5～100L/s.Driven displacement pump rotating speed equates with displacement pump rotating speed initiatively, because adopting metering volumetric pump, its flow transfer short-term training direct ratio, when driven displacement pump flow set be main pipeline fluid 10% time, its error range can ensure ± 5%.Again by regulate and the common adjusting of backflow bypass, can realize the flow that enters mixed charge net to change between 1%～10% at the three-way control valve of driven displacement pump outlet.
The utility model helpfulness: the utility model adopts synchronization transmission structure, particularly coaxial transmission structure, has realized the adjustable mixing of stablizing of plurality of liquid ratio in conjunction with bypass line and three-way control valve; Adopt the hydraulic loss of coaxial transmission structure the utility model device to be not more than 20%, mixing efficiency is high; In the time of main pipeline flow and the larger variation of pressure generation, as Bianization Zhi≤± 20%, the liquid fraction precision sucking be Wu Cha≤± 10%, modification stability is accurate, the equal proportion that also can realize mixed liquor in the time changing between main flow variation 1%～100% regulates, and equal proportion adjustable range is large; The utility model can also carry out the backwash of driven displacement pump and clean, and ensures the clean of equipment and normally uses and increase the service life; The electronic control type proportion mixer structure of comparing traditional, the utility model device low cost of manufacture, device structure is skillfully constructed, compact conformation.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the utility model proportion mixer.
In figure, the 1st, displacement pump, the 2nd, delivery port, the 3rd, fluid pipeline, the 4th, three-way control valve, the 5th, by-pass line, the 6th, driven displacement pump, the 7th, liquid inlet, the 8th, rotating shaft, the 9th, back flush valves, the 10th, water inlet, the 11st, impeller, the 12nd, driven displacement pump impeller, the 13rd, liquid outlet.
Detailed description of the invention
Below by embodiment, the utility model is specifically described; embodiment is only for being further detailed the utility model; can not be interpreted as the restriction to the utility model protection domain, some nonessential improvement that those skilled in the art makes according to the content of above-mentioned utility model and adjustment also belong to the scope of the utility model protection.
In conjunction with Fig. 1.
As shown in the figure, this example is to adopt coaxial transmission structure, and displacement pump 1 is hydro powered displacement pump, has only represented one group of driven displacement pump 6 structure in figure.
Liquid fraction mixing arrangement, include the displacement pump 1 of the hydro powered of water inlet 10, delivery port 2, impeller 11, impeller 11 has rotating shaft 8, rotating shaft 8 is at least in transmission connection with a driven displacement pump 6, each driven displacement pump 6 has independently liquid inlet 7 and liquid outlet 13, and described liquid outlet 13 is connected with the delivery port 2 of displacement pump 1 by fluid pipeline 3.
Between liquid outlet 13 and fluid pipeline 3, be connected with three-way control valve 4, three-way control valve 4 one ports of export connect driven displacement pump 6 liquid inlets 7 by by-pass line 5.
The liquid inlet 7 of each driven displacement pump 6 is connected with water inlet 10 by pipeline, back flush valves 9.
In figure, displacement pump 1 is hydro powered displacement pump, hydro powered displacement pump is by the hydro powered produce power pumping into, drive multiple driven displacement pumps 6 by same rotating shaft 8, driven displacement pump 6 extracts other liquid of certain flow by design, mix with the fluid of mixed charge net.
Driven displacement pump 6 rotating speeds equate with displacement pump 1 rotating speed initiatively, this device employing metering volumetric pump, its flow transfer short-term training direct ratio, when driven displacement pump 6 flow sets be main pipeline fluid 10% time, its error range can ensure ± 5%.Regulate by the three-way control valve 4 exporting at driven displacement pump 6 again and the common adjusting of the bypass that refluxes, can realize the flow that enters mixed charge net and change between 1%～10%.
Carrying out liquid mixes while application, supervisor's net fluid enters water inlet 10 by outside power pumps water, displacement pump 1 impeller 11 rotates and does work, impeller 11 rotating shafts 8 drive driven displacement pump impeller 12 run-in synchronisms, the driven volume pump housing 6 liquid inlets 7 suck foam solution, mix in delivery port 2 mixed liquor outflow tube sections through three-way control valve 4, fluid pipeline 3 with main flow liquid.Because displacement pump characteristic is: flow is directly proportional to rotating speed.Once so determine when the design discharge of two kinds of pumps, the ratio of the mixing material flowing out from supervisor's net is just certain.
The ratio that realizes mixed liquor regulates according to the actual requirements, regulates each road flow by three-way control valve 4, and fluid pipeline 3 and by-pass line 5 form flow adjustment pipe network to be realized.In figure, the flow sum of fluid pipeline 3 and by-pass line 5 equals the outflow flow of driven displacement pump 6, in the time regulating three-way control valve 4, can change the flow of fluid pipeline 3, and ensure that the flow sum of fluid pipeline 3 flows and by-pass line 5 is constant, three-way control valve 4 can be realized quantitative adjusting.
System is closed foam solution suction inlet valve after finishing using, open back flush valves 9, and supervisor's liquid water enters in driven displacement pump 6 systems, finishing equipment interior flushing and cleaning function.
In figure, only represent one group of driven displacement pump 6 structure.While needing the driven displacement pump 6 of many groups to realize plurality of liquid mixing, multiple driven displacement pumps 6 can be set in rotating shaft 8, and equally each control three-way control valve 4, fluid pipeline 3 and by-pass line 5 be independently set.
The coaxial transmission structure representing in figure.Also can chain transmission be set or gear transmission structure is realized Synchronous Transmission at rotating shaft end.
In figure, the driving-energy of displacement pump 1 carrys out the current that free water inlet 10 enters, and another kind of structure is that displacement pump rotating shaft 8 is realized and driving as motor-driven is connected with outside power by transmission device.
Claims (5)
1. a liquid fraction mixing arrangement, include the displacement pump (1) of water inlet (10), delivery port (2), impeller (11), it is characterized in that: described impeller (11) has rotating shaft (8), rotating shaft (8) is at least in transmission connection with a driven displacement pump (6), each driven displacement pump (6) has independently liquid inlet (7) and liquid outlet (13), and described liquid outlet (13) is connected with the delivery port (2) of displacement pump (1) by fluid pipeline (3).
2. liquid fraction mixing arrangement according to claim 1, it is characterized in that: between described liquid outlet (13) and fluid pipeline (3), be connected with three-way control valve (4), three-way control valve (4) one ports of export connect driven displacement pump (6) liquid inlet (7) by by-pass line (5).
3. liquid fraction mixing arrangement according to claim 2, is characterized in that: the liquid inlet (7) of described each driven displacement pump (6) is connected with water inlet (10) by pipeline, back flush valves (9).
4. according to the liquid fraction mixing arrangement described in claim 1 or 2 or 3, it is characterized in that: described displacement pump (1) is self hydro powered displacement pump or supplies power drive displacement pump outward.
5. liquid fraction mixing arrangement according to claim 4, is characterized in that: it is coaxial transmission or chain Synchronous Transmission or gear synchronous transmission that described rotating shaft (8) is in transmission connection with driven displacement pump (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420445350.4U CN203989596U (en) | 2014-08-07 | 2014-08-07 | A kind of liquid fraction mixing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420445350.4U CN203989596U (en) | 2014-08-07 | 2014-08-07 | A kind of liquid fraction mixing arrangement |
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| CN203989596U true CN203989596U (en) | 2014-12-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147723A (en) * | 2014-08-07 | 2014-11-19 | 成都西南水泵厂 | Liquid proportion mixing device |
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2014
- 2014-08-07 CN CN201420445350.4U patent/CN203989596U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147723A (en) * | 2014-08-07 | 2014-11-19 | 成都西南水泵厂 | Liquid proportion mixing device |
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