CN201271443Y - Measuring injection type proportional mixer - Google Patents
Measuring injection type proportional mixer Download PDFInfo
- Publication number
- CN201271443Y CN201271443Y CNU2008201542924U CN200820154292U CN201271443Y CN 201271443 Y CN201271443 Y CN 201271443Y CN U2008201542924 U CNU2008201542924 U CN U2008201542924U CN 200820154292 U CN200820154292 U CN 200820154292U CN 201271443 Y CN201271443 Y CN 201271443Y
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- CN
- China
- Prior art keywords
- foam dope
- foam
- frequency converter
- foam concentrate
- board computer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
Disclosed is a measuring and injection type proportioning mixing unit, which comprises a proportioning mixer as well as a foam concentrate supply mechanism and a fire-fighting water pipeline communicated with the proportioning mixer respectively. The foam concentrate supply mechanism comprises a foam concentrate storage tank, a foam concentrate transfer pump and a foam concentrate transfer pipeline, and also includes an engineering single board computer PC and a frequency converter. A fire-fighting water flow sensor and a foam concentrate flow sensor are arranged on the fire-fighting water pipeline and the foam concentrate transfer pipeline respectively, the two flow sensors are respectively connected with electrical signals of the engineering single board computer PC, the engineering single board computer PC is connected with electrical signals of the frequency converter, and the frequency converter is connected with electrical signals of the foam concentrate transfer pump to control the rotary speed of the foam concentrate transfer pump. The measuring and injection type proportioning mixing unit takes an automatic instrument as a main control unit for measurement, a constant proportion between fire-fighting water and foam liquid can be kept through the control of the microcomputer frequency converter according to the flow rate variation of a water supply system, the mixing ratio precision is high, and the adjustment of the mixing ratio is convenient.
Description
Technical field
The utility model relates to fire plant, relates in particular to a kind of measurement injecting type proportion mixing device.
Background technology
Foam proportioning unit is an important device of putting out first, second, Class C liquid fire in the fire-fighting, because the foam dope difference, the mixing match of it and fire water has 3%, 6% two kind.Gong Ying foam proportioning unit in the market, major part is barrier film pot type or balanced valve formula, and these two kinds of devices all are mechanical adjustment, and its operation principle is that utilization Venturi tube and restricting orifice technology guarantee mixing ratio and mixing degree, has following problem:
(1) foam dope and fire water mixing ratio low precision;
(2) only be suitable for a kind of mixing ratio, need change restricting orifice when adjusting mixing ratio;
(3), increase the fire extinguishing cost because the mixing ratio low precision causes the foam dope loss big;
(4) poor reliability of putting out the fire.
The utility model content
The purpose of this utility model exactly in order to address the above problem, provides a kind of measurement injecting type proportion mixing device that keeps fire water and foam dope proportions constant.
In order to achieve the above object, the utility model has adopted following technical scheme: a kind of measurement injecting type proportion mixing device, comprise that proportioner and the foam dope that is communicated with proportioner respectively provide mechanism and fire water pipeline, foam dope provides mechanism to comprise foam dope storage tank, foam dope delivery pump and foam dope conveyance conduit; Be characterized in: also comprise engineering single board computer PC and frequency converter, the fire water flow sensor is installed on the fire water pipeline, the foam dope flow sensor is installed on the foam dope conveyance conduit, two flow sensors link to each other with the engineering single board computer PC signal of telecommunication respectively, engineering single board computer PC links to each other with the frequency converter signal of telecommunication, and frequency converter links to each other with the foam dope delivery pump signal of telecommunication can control the rotating speed of foam dope delivery pump.
Described foam dope delivery pump is the gear type displacement pump.
Described proportioner is a pressure proportioner, is provided with playpipe and anemostat in the proportioner.
Described engineering single board computer PC and frequency converter are integrated to be installed in the switch board.
To the connecting pipe of foam dope delivery pump, be provided with the automatic/hand transfer valve at the foam dope storage tank.
The utility model measurement injecting type proportion mixing device has been owing to adopted above technical scheme, make its have following advantage and and characteristics:
1, Xian Jin control theory is applied widely.This device utilizes the flow signal of water supply network collection and the flow signal that the foam dope pipe network returns, automatically regulate the foam pump flow, reach foams mix liquid proportional automatic constant, even the foams mix flow quantity changes, and its ratio is constant all the time, be applicable to present any fire foam, and can set mixing ratio according to foam dope difference (3% or 6%).
2, good energy-conserving effect, constant proportion example precision height.This device is directly regulated the foam solution flow by regulating the foam pump rotating speed, and the pressure loss is little, and energy-saving effect, accurate constant proportion example are preferably arranged.
3, according to customer requirements, the configuration flow quantity display apparatus is observed directly perceived, easy on the spot.
4,, the fire-fighting that is complementary constant pressure water supply equipment can be provided, thereby realize the control of constant proportion example according to user's needs.This device operates steadily, and whole fire-fighting foams fire extinguishing pipe network is not almost impacted, and equipment damage drops to minimum, and equipment operation is normal when guaranteeing fire extinguishing, and proportional precision is higher.
5, stainless steel foam solution gear pump is supplied with foam solution, makes foam mixing liquid operating pressure and flow that bigger accommodation be arranged, and can not become rusty extremely because of the corrosion of foam solution.
6, use normal pressure, no capsule stainless steel foam liquid tank, easy maintenance, the reliability height can add foam solution in the fire extinguishing procedure at any time, can satisfy the demand of modern large-scale foam firefighting engineering better.
7, this device adopts the automatic/hand switching controls, and is simple to operate.
Description of drawings
Fig. 1 is the structural representation of facing of the utility model measurement injecting type proportion mixing device;
Fig. 2 is the plan structure schematic diagram of the utility model measurement injecting type proportion mixing device.
The specific embodiment
Referring to Fig. 1, Fig. 2, measurement injecting type proportion mixing device of the present utility model comprises that proportioner 1, foam dope provide mechanism 2, fire water pipeline 3 and switch board 4.Engineering single board computer PC and frequency converter are installed in switch board 4.
Proportioner 1 in the utility model is a pressure proportioner, is provided with playpipe and anemostat in the proportioner, and the fire water and the foam dope that enter proportioner are mixed rapidly.
Foam dope in the utility model provides mechanism 2 to comprise foam dope storage tank 21, foam dope delivery pump 22 (two one masters one are equipped with) and corresponding connecting pipe, foam dope storage tank 21 links to each other by the import of connecting pipe with foam dope delivery pump 22, is provided with automatic/hand transfer valve 23 on this connecting pipe.The outlet of foam dope delivery pump 22 links to each other with an import of proportioner 1 by connecting pipe, and foam dope flow sensor 24 is installed on this connecting pipe, and this flow sensor 24 links to each other with the engineering single board computer PC signal of telecommunication.Foam dope delivery pump 22 is the gear type displacement pump, and the flow of pump is directly proportional with rotating speed.
On the fire water pipeline 3 in the utility model fire water flow sensor 31 is installed, this flow sensor 31 links to each other with the engineering single board computer PC signal of telecommunication.
Engineering single board computer PC in the utility model links to each other with the frequency converter signal of telecommunication, and frequency converter links to each other with foam dope delivery pump 22 signals of telecommunication can control the rotating speed of foam dope delivery pump and the flow of foam dope.
Shown in the figure, 25 is filter, and 26 is check-valves, and 27 are the flushing water inlet, and 28 for flushing out the mouth of a river, and 32 are fire water pressure table, and 33 are the teletransmission Pressure gauge, and 34 is mixture export.
Course of work principle of the present utility model is: two flow sensors are delivered to the rotating speed of Frequency Converter Control foam dope delivery pump and the flow of foam dope with the flow signal that collects after engineering single board computer PC handles, reach the constant proportion example that foam dope and fire water mix.The foam dope delivery pump is the gear type displacement pump, and the flow of pump is directly proportional with rotating speed; Output pressure is hard pressure head, reaches the constant proportion example by flow signal control.Because foam dope and the free requirement of fire water mixing for solving the mixing problem, utilize the playpipe of pressure proportioner in this device and the purpose that anemostat reaches rapid mixing.
Claims (5)
1, a kind of measurement injecting type proportion mixing device, comprise that proportioner and the foam dope that is communicated with proportioner respectively provide mechanism and fire water pipeline, foam dope provides mechanism to comprise the foam dope storage tank, foam dope delivery pump and foam dope conveyance conduit, it is characterized in that: also comprise engineering single board computer PC and frequency converter, the fire water flow sensor is installed on the fire water pipeline, the foam dope flow sensor is installed on the foam dope conveyance conduit, two flow sensors link to each other with the engineering single board computer PC signal of telecommunication respectively, engineering single board computer PC links to each other with the frequency converter signal of telecommunication, and frequency converter links to each other with the foam dope delivery pump signal of telecommunication can control the rotating speed of foam dope delivery pump.
2, measurement injecting type proportion mixing device as claimed in claim 1 is characterized in that: described foam dope delivery pump is the gear type displacement pump.
3, measurement injecting type proportion mixing device as claimed in claim 1 is characterized in that: described proportioner is a pressure proportioner, is provided with playpipe and anemostat in the proportioner.
4, measurement injecting type proportion mixing device as claimed in claim 1 is characterized in that: described engineering single board computer PC and frequency converter are integrated to be installed in the switch board.
5, measurement injecting type proportion mixing device as claimed in claim 1 is characterized in that: be provided with the automatic/hand transfer valve at the foam dope storage tank to the connecting pipe of foam dope delivery pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201542924U CN201271443Y (en) | 2008-10-21 | 2008-10-21 | Measuring injection type proportional mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201542924U CN201271443Y (en) | 2008-10-21 | 2008-10-21 | Measuring injection type proportional mixer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201271443Y true CN201271443Y (en) | 2009-07-15 |
Family
ID=40881796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201542924U Expired - Fee Related CN201271443Y (en) | 2008-10-21 | 2008-10-21 | Measuring injection type proportional mixer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201271443Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711925A (en) * | 2009-09-08 | 2012-10-03 | 斯得-莱特工业有限责任公司 | Method of operating a servo motor in a fire-extinguishing system |
| CN102053631B (en) * | 2009-11-06 | 2013-05-15 | 徐州重型机械有限公司 | Fire-fighting foam mixing ratio control method, system and fire-fighting truck provided therewith |
| CN107158609A (en) * | 2017-06-02 | 2017-09-15 | 公安部天津消防研究所 | One kind is based on servo-controlled extinguishing chemical ratio adding set and implementation method |
-
2008
- 2008-10-21 CN CNU2008201542924U patent/CN201271443Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102711925A (en) * | 2009-09-08 | 2012-10-03 | 斯得-莱特工业有限责任公司 | Method of operating a servo motor in a fire-extinguishing system |
| CN102053631B (en) * | 2009-11-06 | 2013-05-15 | 徐州重型机械有限公司 | Fire-fighting foam mixing ratio control method, system and fire-fighting truck provided therewith |
| CN107158609A (en) * | 2017-06-02 | 2017-09-15 | 公安部天津消防研究所 | One kind is based on servo-controlled extinguishing chemical ratio adding set and implementation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090715 Termination date: 20141021 |
|
| EXPY | Termination of patent right or utility model |