CN106768152A - A kind of dangerous liquid metering system and metering transportation method - Google Patents
A kind of dangerous liquid metering system and metering transportation method Download PDFInfo
- Publication number
- CN106768152A CN106768152A CN201611118502.XA CN201611118502A CN106768152A CN 106768152 A CN106768152 A CN 106768152A CN 201611118502 A CN201611118502 A CN 201611118502A CN 106768152 A CN106768152 A CN 106768152A
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- Prior art keywords
- dangerous liquid
- measuring container
- protection fluid
- metering
- valve
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- 239000007788 liquid Substances 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000012530 fluid Substances 0.000 claims abstract description 100
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 238000012546 transfer Methods 0.000 claims description 9
- 239000011344 liquid material Substances 0.000 claims description 5
- 238000011002 quantification Methods 0.000 claims description 3
- UBJFKNSINUCEAL-UHFFFAOYSA-N lithium;2-methylpropane Chemical compound [Li+].C[C-](C)C UBJFKNSINUCEAL-UHFFFAOYSA-N 0.000 abstract description 10
- OBSZRRSYVTXPNB-UHFFFAOYSA-N tetraphosphorus Chemical compound P12P3P1P32 OBSZRRSYVTXPNB-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 3
- 238000004458 analytical method Methods 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000003786 synthesis reaction Methods 0.000 abstract description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 16
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 12
- 239000000126 substance Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 9
- 229910052786 argon Inorganic materials 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 238000005259 measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000003999 initiator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000002900 organolithium compounds Chemical class 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F22/00—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for
- G01F22/02—Methods or apparatus for measuring volume of fluids or fluent solid material, not otherwise provided for involving measurement of pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention discloses a kind of dangerous liquid metering system and metering transportation method, including measuring container, the measuring container top is provided with protection fluid intake and overflow outlet, the overflow exit is provided with overflow valve, also include protection fluid storage tank and to dangerous liquid or protection fluid measure the fluid metering conveying device of conveying, the measuring container bottom is provided with dangerous liquid outlet, it is provided with outside the measuring container to the heating system of measuring container heating, dangerous liquid metering system of the invention can be measured and conveyed to dangerous liquid, under conditions of ensureing that dangerous liquid is not exposed to air, accomplish high-precision metering and conveying, so that the system can be widely applied to yellow phosphorus, the field such as tert-butyl lithium and the related analysis of other height combustible materials and synthesis.
Description
Technical field
The present invention relates to a kind of liquid gaging system, more particularly to a kind of dangerous liquid metering system and metering conveying side
Method.
Background technology
Generally our liquid meter induction system works in atmospheric conditions, but has the liquid of some dangerous substances
Body is not readily accessible to any air.
Such as liquid phosphor, once touching air can rapidly occur spontaneous combustion, causes major accident.And yellow phosphorus is important
Basic chemical raw materials, its metering is larger on the consumption of raw materials of all kinds of phosphorus chemical products and business accounting influence.Conventional method is by Huang
Phosphorus is cooled to solid state, is packaged as unit using bucket, and sampling then relies primarily on " quick of eye and deft of hand ", and its operation is miscellaneous,
Measuring accuracy is relatively low.Guizhou Jian Feng chemical industry has invented a kind of conveying device of utilization siphon metering conduit, is driven using siphonic effect
Dynamic liquid phosphor enters one and hot water, the measuring tank of determined volume is housed, by measuring tank come the body of accurate measurement yellow phosphorus solution
Product and quality.Although this method come in measuring accuracy to have ensured, but be belonging to intermittently operated, cannot continuous metering flow,
It is unfavorable for mass automatic production.
Again such as tert-butyl lithium, be most important organo-lithium compound, be typically used as synthetic rubber excellent initiator and
Catalyst.It can not only produce many valuable organic compounds, but also can produce many valuable medicines and life
Thing chemicals.But, while tert-butyl lithium is again highly inflammable and dangerous substance.Current its metrological operation is in many cases
It is to be carried out by hand by the personnel having wide experience, has not only been difficult to ensure that accurately but also has existed very big security risk.
The content of the invention
Present invention solves the technical problem that being to provide a kind of dangerous liquid meter of a kind of accurate measurement and conveying dangerous liquid
Amount system.
The technical solution adopted for the present invention to solve the technical problems is：A kind of dangerous liquid metering system, including metering
Container, the measuring container top is provided with protection fluid intake and overflow outlet, and the overflow exit is provided with overflow valve,
Also include protection fluid storage tank and fluid metering conveying device, the fluid metering conveying device is arranged on protection fluid storing
Between tank and protection fluid intake, the measuring container bottom is provided with dangerous liquid outlet, and the measuring container outside is set
Have to the heating system of measuring container heating.
It is further：Also include being arranged on temperature inside measuring container, liquid level and pressure transmitter module.
It is further：The fluid metering conveying device is measuring pump.
It is further：The fluid metering conveying device includes the pneumatic filter, mass flowmenter, the electricity that are sequentially connected
Magnetic stop valve and the second check valve, the inlet end of the pneumatic filter are connected to protection fluid storage tank, and described second is unidirectional
The outlet side of valve is connected to protection fluid intake.
It is further：Also include safety valve, the input of the safety valve is connected at protection fluid intake, the peace
The port of export of full valve is connected to protection fluid storage tank.
It is further：The dangerous liquid exit is provided with triple valve, and other two ends one end of the triple valve connects
Transfer passage is connect, other end connects the first check valve, and the first check valve other end connects dangerous liquid retracting device.
The invention also discloses a kind of dangerous liquid metering transportation method, including a kind of dangerous liquid described in claim 1
Body metering system, including：
A, by dangerous liquid port closing, first pass through fluid metering conveying device in measuring container injection unit code insurance shield stream
Body, then injects in measuring container dangerous liquid material, then by fluid metering conveying device fluid will be protected to fill metering
Container so that unnecessary protection fluid overflows from overflow valve；
B, protection fluid close overflow valve full of after measuring container；
C, when needing to measure and convey dangerous liquid, dangerous liquid is exported and is opened, threeway connection transfer passage one end
Path, protection fluid is injected by metering and conveying device to measuring container quantification, and dangerous liquid is quantitatively pushed into transfer passage.
It is further：Also include safety valve, the input of the safety valve is connected at protection fluid intake, the peace
The port of export of full valve is connected to protection fluid storage tank；
When measuring container is blocked, protection fluid breaks through safety valve, in return protection fluid storage tank.
It is further：Also include being arranged on temperature inside measuring container, liquid level and pressure transmitter module.
When it is compressible to protect fluid, can be defeated to protection fluid according to the pressure and temperature registration measured in measuring container
Enter value to be modified.
The beneficial effects of the invention are as follows：Dangerous liquid metering system of the invention can carry out measuring and defeated to dangerous liquid
Send, under conditions of ensureing that dangerous liquid is not exposed to air, accomplish high-precision metering and conveying so that the system can be wide
It is general to be applied to the fields such as the related analysis of yellow phosphorus, tert-butyl lithium and other height combustible materials and synthesis.
Brief description of the drawings
Fig. 1 is the schematic diagram of embodiment 1.
Fig. 2 is the schematic diagram of embodiment 2.
Marked in figure：Protection fluid storage tank 1, measuring pump 2, safety valve 3, measuring container 4, heat tracing chuck 5, overflow valve
6th, temperature, liquid level and pressure transmitter module 7, heater 8, triple valve 9, the first check valve 10, pneumatic filter 11, quality
Flowmeter 12, electromagnet cut off valve 13, the second check valve 14.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and detailed description.
A kind of dangerous liquid metering system as shown in Figure 1 to Figure 2, including measuring container 4, the top of the measuring container 4
Protection fluid intake and overflow outlet are provided with, the overflow exit is provided with overflow valve 6, also including protection fluid storage tank
1 and to dangerous liquid or protection fluid carry out measure conveying fluid metering conveying device, the bottom of the measuring container 4 is provided with
Dangerous liquid is exported, and is provided with outside the measuring container 4 to the heating system of the heating of measuring container 4；
The heating system is to be arranged on the heat tracing chuck 5 outside measuring container 4 and the heating dress to the heating of heat tracing chuck 5
8 are put, the heater 8 can be bathed or water-bath for recycle oil, or heating wire.
The fluid metering conveying device can have various real-time modes, such as：
Pump is provided with such as between protection fluid storage tank and protection fluid intake, is provided with dangerous liquid delivery outlet
Flowmeter, is controlled by the flow of flowmeter to pump；
Measuring pump 2 and for example is set between protection fluid storage tank and protection fluid intake；
And for example it is arranged on the pneumatic filter 11, matter being sequentially connected between protection fluid storage tank and protection fluid intake
Amount flowmeter 12, the check valve 14 of electromagnet cut off valve 13 and second, the inlet end of the pneumatic filter 11 are connected to protection fluid
Storage tank 1, the outlet side of second check valve 14 is connected to protection fluid intake；
When using, overflow valve 6 is opened, and triple valve 9 is closed, first from protection fluid input port to injection in measuring container 4
1/4, the 1/3 of appropriate protection fluid, such as measuring container 4, dangerous substance is positioned in measuring container 4, the protection stream
The density of body need to be less than the density of dangerous substance so that protection fluid can be completely cut off dangerous substance with air, then be passed through
Fluid metering conveying device in measuring container 4 to being passed through protection fluid so that protection fluid overflows from overflow valve 6, then general
Overflow valve 6 is closed so that do not have unnecessary space in measuring container 4, after the completion of, start heating system and heated to measuring container 4,
So that dangerous substance is in a liquid state, dangerous liquid outlet is then opened, and injected from protection fluid input port according to required flow
Protection fluid, by etc. quality dangerous liquid release dangerous liquid outlet enter external device in, complete dangerous liquid output,
The present apparatus can completely be completely cut off dangerous liquid with air when dangerous liquid is conveyed, and ensure dangerous substance
Under conditions of air is not exposed to, accomplish high-precision metering and conveying, improve security performance.
On the basis of the above, also including being arranged on temperature inside measuring container 4, liquid level and pressure transmitter module 7, institute
The existing product that temperature, liquid level and pressure transmitter module 7 are in the market is stated, can directly by buying acquisition, due to each liquid
Occur change with volume flow of the gas under different temperatures, pressure condition, therefore can the number such as the foundation pressure, the temperature that measure
It is modified according to the flow to needing the protection fluid of injection, such as table one is the density of the liquid phosphor at a temperature of, therefore, when
When temperature is different, also need to make the flow of the protection fluid in injection measuring container 4 further change to improve the accurate of metering
Degree.
The density of liquid phosphor under the different temperatures of table 1
Note：This table is calculated by calculating formula ρ=1 782-0.9t of bibliography [1], and ρ is liquid phosphor density, kg/ in formula
m3；T is liquid phosphor temperature, DEG C.
Additionally, also including safety valve 3, the input of the safety valve 3 is connected at protection fluid intake, the safety valve
3 port of export is connected to protection fluid storage tank 1, and when measuring container 4 occurs stopping state, protection fluid cannot inject metering
In container 4, measuring container 4 will break through safety valve 3 and flow back in protection fluid storage tank 1, prevent protection fluid from drastically increasing and sending out
Raw explosive event.
On the basis of the above, the dangerous liquid exit is provided with triple valve 9, the other two ends one of the triple valve 9
End connection transfer passage, other end connects the first check valve 10, and the other end of the first check valve 10 connection dangerous liquid is returned
Receiving apparatus, the dangerous liquid flows out from transfer passage, and unnecessary dangerous liquid can be single through first by the other end of triple valve 9
Dangerous liquid retracting device is flowed back to valve 10, first check valve 10 also can be replaced the one kind in capillary and choke valve,
Can ensure that under gravity, be not in the situation of ambient atmos suck-back.
The invention also discloses a kind of dangerous liquid metering transportation method, including a kind of dangerous liquid described in claim 1
Body metering system, including：
A, by dangerous liquid port closing, first pass through fluid metering conveying device and protected to injection unit code insurance in measuring container 4
Fluid, then injects in measuring container 4 dangerous liquid material, then by fluid metering conveying device fluid will be protected to fill meter
Amount container 4 so that unnecessary protection fluid overflows from overflow valve 6；
B, protection fluid close overflow valve 6 full of after measuring container 4；
C, when needing to measure and convey dangerous liquid, dangerous liquid is exported and is opened, threeway connection transfer passage one end
Path, protection fluid is injected by metering and conveying device to the quantification of measuring container 4, dangerous liquid is quantitatively pushed conveying logical
Road.
This method may be such that when dangerous liquid is conveyed, dangerous liquid can completely be completely cut off with air, ensuring to endanger
Dangerous material accomplishes high-precision metering and conveying under conditions of air is not exposed to, and improves security performance.
On the basis of the above, also including safety valve 3, the input of the safety valve 3 is connected at protection fluid intake, institute
The port of export for stating safety valve 3 is connected to protection fluid storage tank 1；When measuring container 4 is blocked, protection fluid breaks through safety
Valve 3, in returning to protection fluid storage tank 1, it is to avoid the generation of explosive event.
On the basis of the above, also including being arranged on temperature inside measuring container 4, liquid level and pressure transmitter module 7.
When it is compressible to protect fluid, can be according to the pressure and temperature registration measured in measuring container 4 to protection fluid
Input value is modified, it is ensured that the accuracy of flow measurement.
It is below two embodiments of this programme：
Embodiment 1：
The dangerous liquid material to be measured and conveyed is liquid phosphor (density about 1.73g/ml), and protection fluid is chosen
It is deionized water (density about 1.0g/mL).Because liquid phosphor density is much larger than deionized water, water will be floated over when the two coexists
Face isolates air with yellow phosphorus.
As shown in figure 1, the system includes protection fluid storage tank 1, measuring pump 2, safety valve 3, measuring container 4, heat tracing folder
Set 5, overflow valve 6, temperature, liquid level and pressure transmitter module 7, heater 8, the check valve 10 of triple valve 9 and first；
The workflow of the system is as follows：
(1) overflow valve 6 is opened, and triple valve 9 is closed；
(2) injection is about the deionized water of its volume 1/4 in from user toward measuring container 4；
(3) yellow phosphorus is inserted in measuring container 4 by user；
(4) to start measuring pump 2 quick toward injecting deionized water in measuring container 4 for system；
(5) water fills rear system closing outflow valve 6, and triple valve 9 is placed in into metering output channel；
(6) system starts circulation oil bath (or water-bath), temperature in measuring container 4 is reached 60 degrees Celsius so that yellow phosphorus is in
Liquid；
(7) user sets liquid phosphor output flow, and system is then by after conversion, control measuring pump 22 is with certain speed king
Injection deionized water in measuring container 4, promotes the liquid phosphor of the bottom of measuring container 4 to be exported with required flow.
Embodiment 2
The dangerous liquid material to be measured and conveyed is tert-butyl lithium (density about 0.66g/ml), and protection fluid is chosen
It is argon gas (density about 1.78mg/mL).Because liquid tert-butyl lithium density is much larger than argon gas is removed, argon gas will be floated over when the two coexists
Air is isolated with tert-butyl lithium above.
As shown in Fig. 2 this liquid gaging system includes protection fluid storage tank 1, pneumatic filter 11, mass flowmenter
12nd, electromagnet cut off valve 13, the second check valve 14, safety valve 3, measuring container 4, heat tracing chuck 5, overflow valve 6, temperature, liquid level and
Pressure transmitter module 7, heater 8, the check valve 10 of triple valve 9 and first.
The workflow of the system is as follows：
(1) overflow valve 6 is opened, and triple valve 9 is closed；
(2) a certain amount of argon gas of injection in from user toward measuring container 4；
(3) tert-butyl lithium is inserted in measuring container 4 by user；
(4) system starts pneumatic filter 11, mass flowmenter 12, electromagnet cut off valve 13, the second check valve 14 and starts work
Make quick toward argon gas is injected in measuring container 4, unnecessary argon gas overflows from overflow valve 6；
(5) argon gas fills rear system closing outflow valve 6, and triple valve 9 is placed in into metering output channel；
(6) system starts circulation oil bath (or water-bath), raises temperature in measuring container 4；
(7) user sets the output flow of liquid tert-butyl lithium, system then by after conversion, control pneumatic filter 11,
Mass flowmenter 12, electromagnet cut off valve 13, the second check valve 14 promote meter with injection argon gas in certain speed king measuring container 4
The liquid tert-butyl lithium of amount container 4 bottom is exported with required flow.
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail bright, should be understood that and the foregoing is only specific embodiment of the invention, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., should be included in guarantor of the invention
Within the scope of shield.
Claims (9)
1. a kind of dangerous liquid metering system, it is characterised in that：Including measuring container (4), measuring container (4) top is set
There are protection fluid intake and overflow to export, the overflow exit is provided with overflow valve (6), also including protection fluid storage tank
(1) and to dangerous liquid or protection fluid measure the fluid metering conveying device of conveying, measuring container (4) bottom sets
Dangerous liquid outlet is equipped with, is provided with outside the measuring container (4) to the heating system of measuring container (4) heating.
2. a kind of dangerous liquid metering system as claimed in claim 1, it is characterised in that：Also include being arranged on measuring container
(4) internal temperature, liquid level and pressure transmitter module (7).
3. a kind of dangerous liquid metering system as claimed in claim 1, it is characterised in that：The fluid metering conveying device is
It is arranged on the measuring pump (2) between protection fluid storage tank and protection fluid intake.
4. a kind of dangerous liquid metering system as claimed in claim 1, it is characterised in that：The fluid metering conveying device bag
Include the pneumatic filter (11), the mass flowmenter that are sequentially connected being arranged between protection fluid storage tank and protection fluid intake
(12), electromagnet cut off valve (13) and the second check valve (14), the inlet end of the pneumatic filter (11) are connected to protection fluid
Storage tank (1), the outlet side of second check valve (14) is connected to protection fluid intake.
5. a kind of dangerous liquid metering system as claimed in claim 1, it is characterised in that：Also include safety valve (3), the peace
The input of full valve (3) is connected at protection fluid intake, and the port of export of the safety valve (3) is connected to protection fluid storage tank
(1)。
6. a kind of dangerous liquid metering system as claimed in claim 1, it is characterised in that：The dangerous liquid exit is set
There is triple valve (9), other two ends one end connection transfer passage of the triple valve (9), other end connects the first check valve
(10), the first check valve (10) other end connection dangerous liquid retracting device.
7. a kind of a kind of dangerous liquid metering transportation method, including the dangerous liquid metering system described in claim 1, including：
A, by dangerous liquid port closing, first pass through fluid metering conveying device to measuring container (4) interior injection unit code insurance shield stream
Body, then injects in measuring container (4) dangerous liquid material, then by fluid metering conveying device fluid will be protected to fill meter
Amount container (4) so that unnecessary protection fluid overflows from overflow valve (6)；
B, protection fluid close overflow valve (6) full of after measuring container (4)；
C, when needing to measure and convey dangerous liquid, dangerous liquid is exported and is opened, threeway connection transfer passage one end path,
Protection fluid is injected to measuring container (4) quantification by metering and conveying device, dangerous liquid is quantitatively pushed into transfer passage.
8. a kind of dangerous liquid metering transportation method as claimed in claim 7, it is characterised in that：Also include safety valve (3), institute
The input for stating safety valve (3) is connected at protection fluid intake, and the port of export of the safety valve (3) is connected to protection fluid reservoir
Batch can (1)；
When measuring container (4) is blocked, protection fluid breaks through safety valve (3), in return protection fluid storage tank (1).
9. a kind of dangerous liquid metering transportation method as claimed in claim 7, it is characterised in that：Also include that being arranged on metering holds
The internal temperature of device (4), liquid level and pressure transmitter module (7).
When it is compressible to protect fluid, can be defeated to protection fluid according to the pressure and temperature registration measured in measuring container (4)
Enter value to be modified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611118502.XA CN106768152B (en) | 2016-12-07 | 2016-12-07 | Dangerous liquid metering system and metering conveying method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611118502.XA CN106768152B (en) | 2016-12-07 | 2016-12-07 | Dangerous liquid metering system and metering conveying method |
Publications (2)
| Publication Number | Publication Date |
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| CN106768152A true CN106768152A (en) | 2017-05-31 |
| CN106768152B CN106768152B (en) | 2024-01-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112715854A (en) * | 2020-12-17 | 2021-04-30 | 寿县迎淮豆制品有限公司 | Automatic quantitative distribution device and distribution method for bean curd processing |
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| CN206269882U (en) * | 2016-12-07 | 2017-06-20 | 苏州阿洛斯环境发生器有限公司 | A kind of dangerous liquid metering system |
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| CN112715854A (en) * | 2020-12-17 | 2021-04-30 | 寿县迎淮豆制品有限公司 | Automatic quantitative distribution device and distribution method for bean curd processing |
| CN112715854B (en) * | 2020-12-17 | 2023-07-14 | 寿县迎淮豆制品有限公司 | Automatic quantitative distribution device and distribution method for bean curd processing |
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