CN102032941A - Static weighing device of continuously flowing liquid - Google Patents
Static weighing device of continuously flowing liquid Download PDFInfo
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- CN102032941A CN102032941A CN 201010501790 CN201010501790A CN102032941A CN 102032941 A CN102032941 A CN 102032941A CN 201010501790 CN201010501790 CN 201010501790 CN 201010501790 A CN201010501790 A CN 201010501790A CN 102032941 A CN102032941 A CN 102032941A
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Abstract
The invention discloses a static weighing device of continuously flowing liquid, which is used for solving the problem of static weighing of continuous fluid. The device comprises a material conveying pipeline, weighing hoppers and a material receiving hopper, wherein the material conveying pipeline is connected with two feeding pipes respectively leading to the two weighing hoppers in parallel; each feeding pipe is provided with a feeding valve; the weighing hoppers are provided with weighing sensors; emptying valves are arranged at the bottoms of the weighing hoppers; the capacity of the weighing hoppers is larger than the gross of the materials flowing into the weighing hoppers in the weighing and emptying time slots; the material receiving hopper is positioned on the lower parts of the two weighing hoppers; and a throttle valve of the material receiving hopper is arranged on the lower part of the material receiving hopper. The device adopts the principle of material buffering and is provided with buffer hoppers for storing the liquid flowing in subsequently during weighing to separate the continuous liquid flow from the liquid in the weighing process so that the weighed liquid is static in the short time of weighing, thus realizing static weighing of the continuous fluid and ensuring precision of weighing. The device has the advantages of reasonable structure design, less investment, and is easy to realize and the like.
Description
Technical field
The present invention relates to a kind of liquid static weighing device of continuous flow, belong to the measurement mechanism technical field.
Background technology
At industry, food processing or field of commercial circulation, often need be to the liquid material accurate measurement of continuous conveying, the liquid course of conveying is a continuous process, need in this continuous process, finish the metering of liquid weight, universal method is at first to adopt the flowmeter measurement flow to cross the volume of liquid, volume is converted into the weight of liquid again.The problem that this dynamic measurement method commonly used exists is: measuring accuracy is on the low side, is difficult to reach the desired measuring accuracy of commercial clearing.Because dynamic measurement is difficult to meet the requirements of precision, in order to improve measuring accuracy, effective method is to adopt static weighing, the liquid that the requirement of static weighing is measured when being metering need remain static, in other words, in that a period of time of metering, can not charging in weighing hopper, can not need under the prerequisite that stop defeated material, realize static weighing to outer discharge in the weighing hopper.But in a lot of application scenarios, because the requirement of production technology or the needs of raising the efficiency, the conveying of material does not allow to be interrupted, so produced the contradiction of friction feeding and static weighing.
Summary of the invention
Technical matters to be solved by this invention is intended to overcome the defective of prior art, and a kind of liquid static weighing device that can realize the continuous flow of accurate static weighing under liquid continuous flow state is provided.
The alleged problem of the present invention is solved by following technical scheme:
A kind of liquid static weighing device of continuous flow, its special feature is: comprise feeding pipe, weighing hopper and receiving hopper in the formation, described feeding pipe two feed pipes that lead to two weighing hoppers respectively in parallel, each feed pipe is provided with inlet valve, described each weighing hopper is provided with LOAD CELLS, the weighing hopper bottom is provided with baiting valve, the weighing hopper capacity flows to the total amount of material in the time period greater than weighing hopper metering and blowing, described receiving hopper is positioned at two weighing hopper bottoms, and the receiving hopper bottom is provided with the receiving hopper throttling valve.
The liquid static weighing device of above-mentioned continuous flow, described device also is provided with control system, control system comprises weighing instrument, programmable controller and display, LOAD CELLS changes the weight of weighing into electric signal and is sent to weighing instrument, weighing instrument is finished the weight demonstration and the weighing value is sent in the programmable controller, two weighing instrument data of programmable controller collection also realize the accumulation work of weight, according to weight signal and predefined program, control is advanced, the keying of baiting valve, and the metering result that will accumulate is sent to the display demonstration.
The liquid static weighing device of above-mentioned continuous flow, the cross section, material containing part position of described two weighing hoppers are semicircle.
A kind of liquid static weighing device of continuous flow, its special feature is: formation comprises feeding pipe, buffering bucket and weighing hopper, described feeding pipe leads to buffering bucket, the buffering bucket bottom is provided with baiting valve, described weighing hopper is positioned at the buffering bucket bottom, weighing hopper is provided with LOAD CELLS, and the weighing hopper bottom is provided with baiting valve, and described buffering bucket capacity flows to the total amount of material in the time period greater than weighing hopper metering and blowing.
The present invention is directed to liquid continuous flow state and can't carry out the static weighing problem, specialized designs the static accurate measuring device of a kind of continuous fluid, this device adopts the material buffer principle, buffering bucket is set in device is used to deposit the follow-up liquid that flows to when measuring, continuous flow of liquid is separated with the liquid that is in the metering process, make in the short time of weighing, to be remained static by the liquid of weighing, realize static weighing, guaranteed the precision of metering.Because buffer action, the material continuous flow state that still keeps entering metering system is constant, has realized the high precision static weighing of continuous flow material.The present invention has reasonable in design, drops into advantages such as little, easy realization, has changed for a long time working fluid elder generation metered volume, the present situation of converted weight again, has practicality in fields such as industry, food processing, commercial distributions.
Description of drawings
Fig. 1 is the structural representation of the present invention first scheme embodiment 1;
Fig. 2 is the structural representation of the present invention first scheme embodiment 2;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the structural representation of alternative plan embodiment of the present invention.
Each label is among the figure: 1. receiving hopper throttling valve; 2 receiving hoppers; 3. weighing hopper baiting valve; 4. weighing hopper; 5. LOAD CELLS; 6. inlet valve; 7. feeding pipe; 8. feed pipe; 9. buffering bucket; 10. buffering bucket baiting valve; PLC. programmable controller.
Embodiment
Apparatus of the present invention comprise two schemes, and Fig. 1-3 is two embodiment of first scheme, and Fig. 4 is an alternative plan.
The embodiment 1 of first scheme is referring to Fig. 1, and this device constitutes the feeding pipe 7 that comprises conveying continuous flow liquid, weighing hopper 4 and the receiving hopper 2 of realizing static weighing.8, two feed pipes of two feed pipes in parallel lead to two weighing hoppers that are arranged side by side 4 respectively on feeding pipe 7, are provided with inlet valve 6 on each feed pipe.Each weighing hopper is provided with three LOAD CELLS 5, and the weighing hopper bottom is provided with weighing hopper baiting valve 3, and receiving hopper 2 is positioned at two weighing hopper bottoms, and the receiving hopper bottom is provided with and connects batch box throttling valve 1.Apparatus of the present invention also are provided with the control system (not shown), control system comprises weighing instrument, programmable controller PLC and display, control system is according to LOAD CELLS weight signal and predefined program, control is respectively advanced, the keying of baiting valve, and the metering result that will accumulate is sent to the display demonstration.
Apparatus of the present invention course of work is as follows: before the metering beginning, baiting valve 3 and the inlet valve 6 of two weighing hopper A, B all are in closed condition, during metering, wherein the inlet valve 6 of weighing hopper A is opened, and material to this weighing hopper blanking, is closed inlet valve by feeding pipe when material reaches a certain amount of in the A weighing hopper, open the charging valve of weighing hopper B simultaneously, this moment, the A weighing hopper entered the metering state, and the B weighing hopper is a feed state, plays the buffering bucket effect simultaneously.After the A weighing hopper is finished metering, open the baiting valve of this weighing hopper, its material through metering is put in the receiving hopper 2, material flows out with certain flow under the control of receiving hopper throttling valve 1 in the receiving hopper, after treating the whole emptyings of material among the weighing hopper A, the baiting valve of weighing hopper A is closed, for metering next time is got ready.Finish Deng weighing hopper B charging, the inlet valve of opening weighing hopper A once more begins charging, closes weighing hopper B inlet valve, and simultaneously weighing hopper B begins metering, blowing then, and weighing hopper A plays buffer action.So alternate cycles is finished whole metering process.The above-mentioned course of work, two weighing hoppers be buffering bucket each other, and continuous flow of liquid is separated with the liquid that is in the metering process, makes to be remained static by the liquid of weighing in the short time of weighing, has realized static weighing.Need explanation, for finishing above-mentioned metering process, the capacity of each weighing hopper should flow to the total amount of material greater than weighing hopper metering and blowing in the time period, and need metering by a weighing hopper of control system control and discharging time sum feed time, to guarantee to flow to the continuity of material less than another weighing hopper.Above-mentioned whole static weighing process is controlled by control system, the weight of each weighing hopper changes electric signal into through three LOAD CELLS and is sent to weighing instrument, weighing instrument is finished the weight demonstration and the weighing value is sent among the programmable controller PLC, programmable controller PLC gathers two weighing instrument data and realizes the accumulation work of weight, according to weight signal and predefined program, the keying of baiting valve is advanced in control, finish liquid material and switch between weighing hopper, the metering result that will accumulate at last is sent to screen displaying and comes out.
The embodiment 2 of first scheme is referring to Fig. 2, Fig. 3, and present embodiment changes two circular weighing hoppers 4 into two semicircle weighing hoppers, and two weighing hoppers are stitched together relatively with the diameter limit, forms a circle.This compact conformation, easy to install, whole measuring apparatus can be integrated in the foursquare metal cabinet, form an one-piece construction.The principle of work of embodiment 2 is with embodiment 1.
Referring to Fig. 4, this is an alternative plan of the present invention, this scheme is provided with a weighing hopper 4, the weighing hopper bottom is provided with baiting valve 3, weighing hopper is provided with three LOAD CELLS 5, a fixing buffering bucket 9 is set above weighing hopper, and the buffering bucket bottom is provided with buffering bucket baiting valve 10, and feeding pipe 7 leads to buffering bucket.This programme course of work is similar to Example 1, just in the weighing hopper metering process, the follow-up material that enters is stored in the buffering bucket 9, as long as the capacity of buffering bucket flows to the total amount of material in the time period greater than weighing hopper metering and blowing, can guarantee static weighing in the liquid continuous flow process, the control of the above-mentioned course of work is finished by control system equally.
Claims (4)
1. the liquid static weighing device of a continuous flow, it is characterized in that: it comprises feeding pipe (7), weighing hopper (4) and receiving hopper (2), described feeding pipe two feed pipes (8) that lead to two weighing hoppers respectively in parallel, each feed pipe is provided with inlet valve (6), described weighing hopper is provided with LOAD CELLS (5), the weighing hopper bottom is provided with baiting valve (3), the weighing hopper capacity flows to the total amount of material in the time period greater than weighing hopper metering and blowing, described receiving hopper (2) is positioned at two weighing hopper bottoms, and the receiving hopper bottom is provided with receiving hopper throttling valve (1).
2. the liquid static weighing device of continuous flow according to claim 1, it is characterized in that: described device also is provided with control system, control system comprises weighing instrument, programmable controller (PLC) and display, LOAD CELLS changes the weight of weighing into electric signal and is sent to weighing instrument, weighing instrument is finished the weight demonstration and the weighing value is sent in the programmable controller (PLC), programmable controller (PLC) is gathered two weighing instrument data and is realized the accumulation work of weight, according to weight signal and predefined program, control is advanced, the keying of baiting valve, and the metering result that will accumulate is sent to the display demonstration.
3. the liquid static weighing device of continuous flow according to claim 1 and 2 is characterized in that: the cross section, material containing part position of described two weighing hoppers (4) is for semicircle.
4. the liquid static weighing device of a continuous flow, it is characterized in that: it comprises feeding pipe (7), buffering bucket (9) and weighing hopper (4), described feeding pipe leads to buffering bucket, the buffering bucket bottom is provided with baiting valve (10), described weighing hopper is positioned at the buffering bucket bottom, weighing hopper is provided with LOAD CELLS (5), and the weighing hopper bottom is provided with baiting valve (3), and described buffering bucket capacity flows to the total amount of material in the time period greater than weighing hopper metering and blowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501790 CN102032941A (en) | 2010-10-11 | 2010-10-11 | Static weighing device of continuously flowing liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010501790 CN102032941A (en) | 2010-10-11 | 2010-10-11 | Static weighing device of continuously flowing liquid |
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| CN102032941A true CN102032941A (en) | 2011-04-27 |
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| CN 201010501790 Pending CN102032941A (en) | 2010-10-11 | 2010-10-11 | Static weighing device of continuously flowing liquid |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033242A (en) * | 2012-12-19 | 2013-04-10 | 长岭炼化岳阳工程设计有限公司 | Static weighing control method |
| CN103234609A (en) * | 2013-04-25 | 2013-08-07 | 山东建设机械股份有限公司 | Small-dose liquid volume metering balance |
| CN103630220A (en) * | 2013-11-10 | 2014-03-12 | 西安航天化学动力厂 | Device for weighing liquid with viscosity being 4mPa.S |
| CN104526883A (en) * | 2014-11-20 | 2015-04-22 | 徐州徐工施维英机械有限公司 | Additive metering device, concrete mixing plant, and additive metering method |
| CN105486389A (en) * | 2015-12-14 | 2016-04-13 | 无锡正佳自控系统设备有限公司 | Liquid material feeding metering apparatus |
| CN106346614A (en) * | 2016-08-30 | 2017-01-25 | 郑州三和水工机械有限公司 | Weighting and burdening method and weighting and burdening device |
| CN106554788A (en) * | 2016-11-28 | 2017-04-05 | 新奥泛能网络科技股份有限公司 | A kind of coal tar preparation system and coal tar preparation method |
| CN106858686A (en) * | 2017-02-21 | 2017-06-20 | 青岛宝恒机械技术有限公司 | Double oily scale Oil Tanks |
| CN110230258A (en) * | 2018-03-05 | 2019-09-13 | 河北高达电子科技有限公司 | A kind of squeezing trolley slurry-outlet quantity metering method and squeezing trolley |
| CN110293638A (en) * | 2019-06-28 | 2019-10-01 | 重庆精榜高分子材料有限公司 | Liquid material automatic metering mechanism |
| CN110954198A (en) * | 2019-11-18 | 2020-04-03 | 中山胡氏机械设备有限公司 | Intelligent stock bin control system and feeding and discharging control method |
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| CN1066503A (en) * | 1991-05-06 | 1992-11-25 | 大丰县标准计量管理所实验工厂 | Automatic weighing instrument for cotton seeds |
| CN2289228Y (en) * | 1996-10-14 | 1998-08-26 | 朱枫林 | High precision solid flow metering installation |
| CN2372671Y (en) * | 1998-12-24 | 2000-04-05 | 舒良 | Weighing device for semicontinuous automatic feeding or unloading |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033242A (en) * | 2012-12-19 | 2013-04-10 | 长岭炼化岳阳工程设计有限公司 | Static weighing control method |
| CN103234609A (en) * | 2013-04-25 | 2013-08-07 | 山东建设机械股份有限公司 | Small-dose liquid volume metering balance |
| CN103630220A (en) * | 2013-11-10 | 2014-03-12 | 西安航天化学动力厂 | Device for weighing liquid with viscosity being 4mPa.S |
| CN104526883A (en) * | 2014-11-20 | 2015-04-22 | 徐州徐工施维英机械有限公司 | Additive metering device, concrete mixing plant, and additive metering method |
| CN105486389A (en) * | 2015-12-14 | 2016-04-13 | 无锡正佳自控系统设备有限公司 | Liquid material feeding metering apparatus |
| CN106346614A (en) * | 2016-08-30 | 2017-01-25 | 郑州三和水工机械有限公司 | Weighting and burdening method and weighting and burdening device |
| CN106554788A (en) * | 2016-11-28 | 2017-04-05 | 新奥泛能网络科技股份有限公司 | A kind of coal tar preparation system and coal tar preparation method |
| CN106858686A (en) * | 2017-02-21 | 2017-06-20 | 青岛宝恒机械技术有限公司 | Double oily scale Oil Tanks |
| CN110230258A (en) * | 2018-03-05 | 2019-09-13 | 河北高达电子科技有限公司 | A kind of squeezing trolley slurry-outlet quantity metering method and squeezing trolley |
| CN110293638A (en) * | 2019-06-28 | 2019-10-01 | 重庆精榜高分子材料有限公司 | Liquid material automatic metering mechanism |
| CN110954198A (en) * | 2019-11-18 | 2020-04-03 | 中山胡氏机械设备有限公司 | Intelligent stock bin control system and feeding and discharging control method |
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Application publication date: 20110427 |