CN104043217A - Dynamic balance pressure proportioning mixer - Google Patents
Dynamic balance pressure proportioning mixer Download PDFInfo
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- CN104043217A CN104043217A CN201410242992.9A CN201410242992A CN104043217A CN 104043217 A CN104043217 A CN 104043217A CN 201410242992 A CN201410242992 A CN 201410242992A CN 104043217 A CN104043217 A CN 104043217A
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- pressure
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- proportioner
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Abstract
The invention discloses a dynamic balance pressure proportioning mixer. The dynamic balance pressure proportioning mixer comprises: a proportioning mixer body, wherein a proportioning mixer nozzle is connected with the proportioning mixer body, and the proportioning mixer body is provided with a mixer firefighting water inlet and a foam liquid inlet; a cover body, wherein the cover body is fixed on the proportioning mixer body and covers the proportioning mixer body; and a cylinder, wherein the cylinder is fixed on the proportioning mixer body, and a surge chamber is arranged among the cover body, the proportioning mixer body and the cylinder. A balancing member balancing the pressure of a foam liquid and the pressure of firefighting water is arranged in the dynamic balance pressure proportioning mixer. Compared with proportioning mixers in the prior art, the dynamic balance pressure proportioning mixer can realize automatic formation of balance when the pressure of the foam liquid is always greater than the pressure of the firefighting water, and does not restrict the concrete value of the difference between the pressure of the foam liquid and the pressure of the firefighting water.
Description
Technical field
The present invention relates to fire plant, relate in particular to a kind of dynamic equilibrium pressure proportioner.
Background technology
Equalizing pressure formula proportioner is a kind of important fire plant, and its operation principle is the fire water of certain flow pressure that fire pump is provided and the foam solution that foam pump provides, and in the ratio of code requirement, automatically mixes; When the flow of fire water increases within the specific limits or reduces, foam solution flow also correspondingly increases or reduces, and when the fire water pressure of certain flow changes within the specific limits, foam solution can both mix with it by certain flow.Be that fire water changes in certain flow, pressure limit, foam solution flow also changes thereupon, remains that the mixed proportion of fire water and foam meets code requirement.The mixing ratio of fire water and foam is to consider the key parameter of foam fire-fighting equipment performance.
The pressure balance function of equalizing pressure formula proportioner is strong and weak, determines the quality of the performance of equalizing pressure proportioner, and weighs a kind of quality of equalizing pressure formula proportioner, just depends on flow upper lower limit value and the working pressure range of this kind of blender.
At present, known equalizing pressure formula proportioner is comprised of equalizing pressure control valve and the large parts of proportioner two, equalizing pressure control valve is placed in proportioner foam solution porch, in order to monitor fire water pressure with foam pipeline pressure and to keep water pressure identical with foam solution pressure, guarantee the liquid flowing ratio example of passing ratio blender orifice plate groove.Equalizing pressure control valve surge-chamber is divided into upper and lower two chambeies with valve block, and surge-chamber epicoele is connected with mixer entrance with an aqueduct, and surge-chamber cavity of resorption is connected with the foam solution on blender orifice plate groove top.Foam solution pressure is greater than fire water pressure, and foam solution pressure is not more than fire water pressure and adds 0.2MPa, i.e. P water < P foam < P water+0.2 MPa.
By known to existing equalizing pressure formula proportioner technical Analysis, because equalizing pressure control valve and the proportioner of equalizing pressure formula proportioner are taked split type device, certainly will make its volume large, complex structure; And the limitation of P foam < P water+0.2 MPa, makes it regulate the scope of pressure to be restricted, and has affected the scope of application of equalizing pressure formula proportioner; Known equalizing pressure formula proportioner, due to design feature, must could be used by right angle setting it, and engineering application has been limited to installation requirement, needs to meet the space that equipment uses.The many disadvantages of existing equalizing pressure formula proportioner, has seriously hindered popularization and the development of equalizing pressure formula proportioner at fire-fighting domain.
Therefore, those skilled in the art is devoted to develop a kind of Novel balance pressure proportioner.
Summary of the invention
Because the above-mentioned defect of prior art, technical problem to be solved by this invention is to provide a kind of equalizing pressure formula proportioner, optimize the structure of simplifying equalizing pressure formula proportioner, avoided the defect of at right angle setting requirement, eliminate the restriction of P water < P foam < P water+0.2 MPa, improve the pressure regulating performance of balance regulating valve, improve flow, the pressure limit of equalizing pressure proportioner, make it stable working reliable.
For achieving the above object, the invention provides a kind of dynamic equilibrium pressure proportioner, comprising:
Proportioner body, proportioner nozzle is connected with described proportioner body, is provided with blender fire water entrance and foam solution entrance on described proportioner body;
Lid, described lid is fixed on described proportioner body and covers described proportioner body;
Cylinder body, described cylinder body is fixed on described proportioner body, between described lid, described proportioner body and described cylinder body, is surge-chamber;
It is characterized in that in described dynamic equilibrium pressure proportioner, thering is the foam solution of making pressure and the pressure balanced balance component of fire water.
Further, described balance component comprises surge-chamber, piston, orifice plate groove; Described surge-chamber has the first chamber and the second chamber, and described the first chamber and described foam solution are communicated with, and described the second chamber and described fire water are communicated with; Described piston is arranged on also can be with respect to described movement of cylinder block in described proportioner body; Described orifice plate groove is fixed on described proportioner body, between described piston and described orifice plate groove, forms foam solution access road; When described piston is set to described fire water pressure and described foam solution pressure imbalance, described piston is with respect to described movement of cylinder block, described foam solution access road size is changed, the pressure of described foam solution changes, the corresponding change of pressure in described the first chamber, thereby reach dynamic equilibrium, the pressure balance of described foam solution and described fire water between described the first chamber and described the second chamber.
Further, when described piston is set to described fire water pressure and is greater than described foam solution pressure, described piston moves to described the first chamber with respect to described cylinder body, described foam solution access road is increased, the pressure of described foam solution increases, the pressure in described the first chamber increases, thereby reaches dynamic equilibrium, the pressure balance of described foam solution and described fire water between described the first chamber and described the second chamber; When described fire water pressure is less than described foam solution pressure, described piston moves to described the second chamber with respect to described cylinder body, described foam solution access road is reduced, the pressure of described foam solution reduces, the pressure in described the second chamber increases, thereby reach dynamic equilibrium, the pressure balance of described foam solution and described fire water between described the first chamber and described the second chamber.
Further, described surge-chamber has diaphragm seal, and the two ends of described diaphragm seal are fixed on described proportioner body, and described surge-chamber is separated into described the first chamber and described the second chamber.
Further, the material of described diaphragm seal is elastic water-proofing material, as rubber.
Further, have diaphragm seal pressing plate on described piston, described diaphragm seal pressing plate comprises the first pressing plate and the second pressing plate, and described the first pressing plate and described the second pressing plate are set to, in described piston movement process, push down described sealing compressing tablet.
Further, arrange porosely on described piston, described hole makes blow-by between described cylinder body and described piston.
Further, described piston and described cylinder body are coaxial installation, and described piston can move along the direction of described axle with respect to described cylinder body.
Further, described piston is provided with piston inner via hole, in described piston inner via hole, be fixed with pressure axle, described pressure axle is provided with pressure axle inner via hole, described pressure axle inner via hole two ends are stretched into respectively in described first chamber and described orifice plate groove of described surge-chamber, and described the first chamber communicates with the foam solution of described proportioner orifice plate groove by described piston, described pressure axle.
Further, described the second chamber is communicated with the fire water of described blender fire water entrance by connecting pipe.
Further, described proportioner nozzle is screwed onto on described proportioner body by the sealing of O type circle.
Further, described cylinder body is fixed on described proportioner body by connecting hole.
Further, described orifice plate groove is screwed onto on described proportioner body by the sealing of O type circle.
Technique effect
Existing equalizing pressure formula proportioner all exists comparatively significantly not enough in installation, structure and performance, especially can only be greater than the defect that could regulate under fire water 0.2MPa condition in foam pressure, seriously restrict the large-scale popularization of equalizing pressure formula proportioner in engineering application.
The present invention is by the research to pressure-regulating valve and proportioner, both advantages are united two into one and carry out innovative design, by changing the different ways of measure pressure of surge-chamber, make blender in the situation that of large, guarantee all the time the stable of mixed liquor mixing ratio at flow, pressure range, maintain pressure dynamic equilibrium, not only save cost, widened range of application, and promoted constantly bringing forth new ideas of fire protection sector technological progress.
Compared with prior art, dynamic equilibrium pressure proportioner of the present invention, as long as while guaranteeing that foam solution pressure perseverance is greater than the pressure of fire water, above-mentioned dynamic equilibrium can form automatically, needn't limit foam hydraulic coupling higher than the occurrence of fire water pressure, in engineering test and practice, balance type proportioning mixer of the present invention all can guarantee in sizable pressure and range of flow that mixing ratio is stable, and meets code requirement.
Below with reference to accompanying drawing, the technique effect of design of the present invention, concrete structure and generation is described further, to understand fully object of the present invention, feature and effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of the dynamic equilibrium pressure proportioner of a preferred embodiment of the present invention;
Fig. 2 is the schematic diagram under the dynamic balance state of the dynamic equilibrium pressure proportioner in Fig. 1.
In accompanying drawing, 1 represents proportioner body, 2 represent proportioner nozzle, 3 represent orifice plate groove, 4 represent piston, 5 represent cylinder body, 6 represent diaphragm seal pressing plate, 7 represent diaphragm seal, 8 represent lid, 9 represent pressure axle, 10 represent bolt, 11 represent plain washer, 12 represent elastic washer, 13 represent surge-chamber, 14 represent perforate, 15 represent the first orifice plate, 16 represent the second orifice plate, 17 represent cannelure, a represents blender fire water entrance, b represents foam solution entrance, c represents surge-chamber the second chamber fire water entrance, d represents surge-chamber the first chamber foam solution entrance, e represents foam solution access road, k represents the first pressing plate, g represents the second pressing plate, f represents blender foam solution entrance, O represents the first chamber, P represents the second chamber, Q1 represents piston inner via hole, Q2 represents pressure axle inner via hole.
The specific embodiment
Embodiment 1
The present embodiment provides a kind of dynamic equilibrium pressure proportioner, comprising: proportioner body 1, and proportioner nozzle 2 is connected with proportioner body 1, is provided with blender fire water entrance a and foam solution entrance b on proportioner body 1; Lid 8, lid 8 is fixed on proportioner body 1 and covers proportioner body 1; Cylinder body 5, cylinder body 5 is fixed on proportioner body 1, between lid 8, proportioner body 1 and cylinder body 5, is surge-chamber 13; Wherein, in dynamic equilibrium pressure proportioner, there is the foam solution of making pressure and the pressure balanced balance component of fire water.
Balance component comprises surge-chamber 13, piston 4, cylinder body 5, orifice plate groove 3; Surge-chamber 13 has the first chamber O and the second chamber P, and the first chamber O and foam solution are communicated with, and the second chamber P and fire water are communicated with; Piston 4 is arranged in proportioner body 1 and can moves with respect to cylinder body 5; Orifice plate groove 3 is fixed on proportioner body 1, forms foam solution access road e between piston 4 and orifice plate groove 3.
When piston 4 is set to the rising of fire water pressure, the second chamber P pressure increases, piston 4 moves to the first chamber O with respect to cylinder body 5, foam solution access road e is increased, the pressure of foam solution increases, the pressure of the first chamber O increases, thereby reaches dynamic equilibrium, the pressure balance of foam solution and fire water between the first chamber O and the second chamber P.
On piston 4, be provided with perforate 14, perforate 14 makes blow-by between cylinder body 5 and piston 4, and perforate 14 can make the Bas Discharged between piston 4 and cylinder body 5, thereby reduces the damping of piston 4.
Piston 4 is provided with piston inner via hole Q1, in piston inner via hole Q1, be fixed with pressure axle 9, pressure axle 9 is provided with pressure axle inner via hole Q2, pressure axle inner via hole Q2 stretches into respectively in the first chamber O and orifice plate groove 3 of surge-chamber 13, and the first chamber O communicates with the foam solution of proportioner orifice plate groove 3 by piston 4, pressure axle 9; The second chamber P is communicated with the fire water of blender fire water entrance a by connecting pipe c.
Fig. 1 and Fig. 2 show the structure of the dynamic equilibrium pressure proportioner in a preferred embodiment of the present invention, as shown in the figure, dynamic equilibrium pressure proportioner comprises proportioner body 1, proportioner nozzle 2, orifice plate groove 3, piston 4, cylinder body 5, diaphragm seal pressing plate 6, diaphragm seal 7, lid 8, pressure axle 9; Surge-chamber 13 consists of proportioner body 1, cylinder body 5, lid 8.Diaphragm seal 7 is fixed on proportioner body 1 by bolt pair 10,11,12, surge-chamber is separated into the first chamber and the second chamber, the first chamber O communicates with the foam solution at orifice plate groove 3 places by piston 4, pressure axle 9, and the second chamber P is communicated with the fire water of proportioner entrance a by connecting pipe c.Pressing plate k, g are fixed on piston 4, and in piston movement process, push down sealing compressing tablet 7.
In one embodiment of the invention, balance type proportioning mixer piston 4 under servo condition contacts with orifice plate groove 3 under Gravitative Loads, balance type proportioning mixer is in position shown in Fig. 1, when fire water is with certain pressure, flow is when entrance a flows into blender, partial pressure water enters surge-chamber the second chamber by tube connector by entrance c, promote diaphragm seal 7, diaphragm seal pressing plate 6, piston 4 moves to the first chamber, between piston and orifice plate groove, form access road e, by foam pump, provide certain pressure, the foam solution of flow is from foam solution entrance b, through access road e, flow in proportioner orifice plate groove 3, most of foam solution is by the blender foam solution entrance f on orifice plate groove, flow into blender, the fire water flowing into entrance a mixes by a certain percentage, a small amount of foam flows into surge-chamber the first chamber O through surge-chamber foam solution entrance d.When fire water pressure raises, surge-chamber the second chamber P pressure increases, piston moves to the first chamber, foam solution access road e opening increases, the also corresponding rising of d place pressure, when surge-chamber the first cavity pressure being flowed into by entrance d is elevated to certain value, surge-chamber the first chamber O pressure is greater than the second chamber P pressure, piston moves to the second chamber, foam solution access road e opening reduces, when the first chamber is equal with the second cavity pressure, diaphragm seal 7 and piston 4 are in poised state, proportioner has proper mixture ratio, when fire water or foam pressure change, repeat above-mentioned motion, all the time maintain the first chamber and the second cavity pressure balanced, maintain a kind of dynamic equilibrium.
Orifice plate groove 3 has the first orifice plate 15 and the second orifice plate 16, on the first orifice plate 15 and the second orifice plate 16, there is respectively hole, the hole of boring ratio second orifice plate 16 of the first orifice plate 15 is large, plays cushioning effect, and the foam inlet of the first orifice plate 15 can be controlled by the foam stream output of the second orifice plate 16.The foam solution that flows into blender through orifice plate groove 3 can also pass through cannelure 17, equally also can have the effect of a buffering foam solution inlet.
Described balance type proportioning mixer, as long as while guaranteeing that foam solution pressure perseverance is greater than the pressure of fire water, above-mentioned balance can form automatically, needn't limit foam hydraulic coupling higher than the occurrence of fire water pressure.
Described piston 4 can freely move up and down, and when surge-chamber the first chamber and the second cavity pressure equate in any poised state, needn't limit the aperture of access road e.
Described surge-chamber the first chamber and the second cavity pressure equate, guarantee the variation of mixer entrance pressure, do not affect the stable of proportioner mixing ratio.
The size variation of the aperture of described access road e, surge-chamber the first chamber and the second cavity pressure all can reach dynamic equilibrium, guarantee blender flow within the specific limits, guarantee that mixing ratio is stable.
In engineering test and practice, balance type proportioning mixer of the present invention all can guarantee in sizable pressure and range of flow that mixing ratio is stable, and meets code requirement.
More than describe preferred embodiment of the present invention in detail.The ordinary skill that should be appreciated that this area just can design according to the present invention be made many modifications and variations without creative work.Therefore, all technical staff in the art, all should be in the determined protection domain by claims under this invention's idea on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment.
Claims (10)
1. a dynamic equilibrium pressure proportioner, comprising: proportioner body, and proportioner nozzle is connected with described proportioner body, is provided with blender fire water entrance and foam solution entrance on described proportioner body;
Lid, described lid is fixed on described proportioner body and covers described proportioner body;
Cylinder body, described cylinder body is fixed on described proportioner body, between described lid, described proportioner body and described cylinder body, is surge-chamber; It is characterized in that in described dynamic equilibrium pressure proportioner, thering is the foam solution of making pressure and the pressure balanced balance component of fire water.
2. dynamic equilibrium pressure proportioner as claimed in claim 1, is characterized in that, described balance component comprises surge-chamber, piston, orifice plate groove; Described surge-chamber has the first chamber and the second chamber, and described the first chamber and described foam solution are communicated with, and described the second chamber and described fire water are communicated with; Described piston is arranged on also can be with respect to described movement of cylinder block in described proportioner body; Described orifice plate groove is fixed on described proportioner body, between described piston and described orifice plate groove, forms foam solution access road; When described piston is set to described fire water pressure and described foam solution pressure imbalance, described piston is with respect to described movement of cylinder block, described foam solution access road size is changed, the pressure of described foam solution changes, the corresponding change of pressure in described the first chamber, thereby reach dynamic equilibrium, the pressure balance of described foam solution and described fire water between described the first chamber and described the second chamber.
3. dynamic equilibrium pressure proportioner as claimed in claim 2, it is characterized in that, when described piston is set to described fire water pressure and is greater than described foam solution pressure, described piston moves to described the first chamber with respect to described cylinder body, described foam solution access road is increased, and the pressure of described foam solution increases, and the pressure in described the first chamber increases, thereby reach dynamic equilibrium, the pressure balance of described foam solution and described fire water between described the first chamber and described the second chamber; When described fire water pressure is less than described foam solution pressure, described piston moves to described the second chamber with respect to described cylinder body, described foam solution access road is reduced, the pressure of described foam solution reduces, the pressure in described the second chamber increases, thereby reach dynamic equilibrium, the pressure balance of described foam solution and described fire water between described the first chamber and described the second chamber.
4. dynamic equilibrium pressure proportioner as claimed in claim 1 or 2, it is characterized in that, described surge-chamber has diaphragm seal, and the two ends of described diaphragm seal are fixed on described proportioner body, and described surge-chamber is separated into described the first chamber and described the second chamber.
5. dynamic equilibrium pressure proportioner as claimed in claim 4, is characterized in that, the material of described diaphragm seal is elastic water-proofing material.
6. dynamic equilibrium pressure proportioner as claimed in claim 4, it is characterized in that, on described piston, there is diaphragm seal pressing plate, described diaphragm seal pressing plate comprises the first pressing plate and the second pressing plate, described the first pressing plate and described the second pressing plate are set to, in described piston movement process, push down described sealing compressing tablet.
7. dynamic equilibrium pressure proportioner as claimed in claim 2, is characterized in that, arranges porosely on described piston, and described hole makes blow-by between described cylinder body and described piston.
8. dynamic equilibrium pressure proportioner as claimed in claim 2, is characterized in that, described piston and described cylinder body are coaxial installation, and described piston can move along the direction of described axle with respect to described cylinder body.
9. dynamic equilibrium pressure proportioner as claimed in claim 2, it is characterized in that, described piston is provided with piston inner via hole, in described piston inner via hole, be fixed with pressure axle, described pressure axle is provided with pressure axle inner via hole, described pressure axle inner via hole stretches into respectively in described first chamber and described orifice plate of described surge-chamber, and described the first chamber communicates with the foam solution of described proportioner orifice plate groove by described piston, described pressure axle.
10. dynamic equilibrium pressure proportioner as claimed in claim 2, is characterized in that, described the second chamber is communicated with the fire water of described blender fire water entrance by connecting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242992.9A CN104043217A (en) | 2014-06-04 | 2014-06-04 | Dynamic balance pressure proportioning mixer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410242992.9A CN104043217A (en) | 2014-06-04 | 2014-06-04 | Dynamic balance pressure proportioning mixer |
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| CN104043217A true CN104043217A (en) | 2014-09-17 |
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| CN201410242992.9A Pending CN104043217A (en) | 2014-06-04 | 2014-06-04 | Dynamic balance pressure proportioning mixer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105311774A (en) * | 2015-10-15 | 2016-02-10 | 高邮市盛鑫消防科技有限公司 | Foam tank pressure type proportioner |
| CN114558266A (en) * | 2021-11-10 | 2022-05-31 | 国网电力科学研究院有限公司 | Fixed quick mixing device with proportional mixer and fire hydrant connected |
| CN117244200A (en) * | 2023-11-13 | 2023-12-19 | 河南省威特消防设备有限公司 | Integrated foam liquid mixing and supplying equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105311774A (en) * | 2015-10-15 | 2016-02-10 | 高邮市盛鑫消防科技有限公司 | Foam tank pressure type proportioner |
| CN114558266A (en) * | 2021-11-10 | 2022-05-31 | 国网电力科学研究院有限公司 | Fixed quick mixing device with proportional mixer and fire hydrant connected |
| CN117244200A (en) * | 2023-11-13 | 2023-12-19 | 河南省威特消防设备有限公司 | Integrated foam liquid mixing and supplying equipment |
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