CN2606341Y - Liquid outlet controlling and metering installation - Google Patents
Liquid outlet controlling and metering installation Download PDFInfo
- Publication number
- CN2606341Y CN2606341Y CN 03215874 CN03215874U CN2606341Y CN 2606341 Y CN2606341 Y CN 2606341Y CN 03215874 CN03215874 CN 03215874 CN 03215874 U CN03215874 U CN 03215874U CN 2606341 Y CN2606341 Y CN 2606341Y
- Authority
- CN
- China
- Prior art keywords
- relay
- group
- pipeline
- control coil
- solenoid valve
- 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
Links
Landscapes
- Magnetically Actuated Valves (AREA)
Abstract
The utility model relates to a device for controlling a quantitative outflow of liquid and measuring the outflow cumulatively, which is used for controlling and cumulatively measuring the outflow of liquid flowing at a uniform velocity. Utilizing a time relay, sold on the market, with a normally closed contact group and the functions of delay time setup, cumulative count and display, the utility model cooperates with a relay with two normally opened contact group and a point switch to control an electromagnetic valve fixed in the pipe to open and then close according to the delay time and count cumulatively the open times of the electromagnetic valve to reflect the cumulative outflow of liquid in the pipe. The measurement of the utility model does not rely on sense elements contacting with the liquid, thereby the viscosity or adhesion of liquid having no effect on the sensitivity and accuracy of measurement. The measurement is stable and reliable. The utility model is suitable for the measurement of low flux. The utility model shows data digitally, thereby having good readability. Compared with the scheme of assembling an electromagnetic valve, an electronic flowmeter and a microprocessor, the utility model has simple structure with low cost.
Description
Affiliated technical field
The utility model relates to apparatus for metering fluids, and especially controlling liquid quantitatively flows out and the device of cummulative metering in addition.
Background technology
Liquid outflow amount is controlled and cummulative metering, and prevailing method is to adopt the combination of valve and water meter class cummulative metering utensil.But the thick liquid discharge to low discharge is done cummulative metering, the liquid outflow amount within ten milliliters of p.s.s for example, and water meter class measurement instrument tends to not reach requirement because of the adhesive attraction of liquid on sensing unit makes sensitivity and precision.Someone proposes to adopt the combination of solenoid valve and electronic flow-meter and microprocessor to solve the problem that thick liquid brings according to prior art.This scheme cost is higher, controls and cummulative metering for commercially available bulk beverage, obviously is not suitable for.
Summary of the invention
The utility model aims to provide a kind ofly can control liquid outflow amount control measuring apparatus with cummulative metering for the liquid outflow amount of the low discharge of flow speed stability, satisfies the demand of the common occasion of this class of commercially available bulk beverage.
The purpose of this utility model realizes by following scheme: a kind of liquid outflow amount control measuring apparatus, utilize the commercially available time relay that has delay adjustments, stored count and Presentation Function and a normally closed contact group is arranged, determine the opening time of solenoid valve in the pipeline of flow speed stability with the delay adjustments function, whenever point driving switch is operated once, solenoid valve is opened once by time relay control, liquid is pressed the set amount outflow in the pipeline, and this time relay inside is done stored count and shown; With liquid accumulative total discharge in the unlatching number of times reflection pipeline of the solenoid valve that adds up; Its architectural feature is: the pipeline, one that comprise a time relay that has delay adjustments, stored count and Presentation Function and a normally closed contact group is arranged, one group of flow of liquid warp are installed in this and organize ducted solenoid valve, a relay and the point driving switch with two normal opened contact groups; An end is connected the live wire of power supply after the first normal opened contact group parallel connection of this point driving switch and relay, and the other end connects an end of the control coil of the end of control coil of this solenoid valve and this relay; One end of the other end tie-time relay normally closed contact group of the other end of the control coil of this solenoid valve and the control coil of this relay; The other end of time relay normally closed contact group connects the zero line of power supply; One end of the second normal opened contact group of relay connects the live wire of power supply, and the other end connects an end of the control coil of this time relay; The other end of the control coil of this time relay connects the zero line of power supply.
For the pipeline more than a group, according to above-mentioned basic scheme, in the time of also will making the solenoid valve of a certain group of pipeline open, unlatchings that must be under an embargo of all the other solenoid valves of respectively organizing pipeline, this time relay reflects with the unlatching number of times of each solenoid valve of accumulative total respectively organizes totally discharge of liquid total in the pipeline; Its architectural feature is: also comprise the pipeline of at least one group of flow of liquid warp, an every group of corresponding solenoid valve, relay and point driving switch with two normal opened contact groups of outfit installed of pipeline; Described all each relays with two normal opened contact groups also have several normally closed contact groups of group of described additional pipeline; All respectively organize the live wire that an end after the first normal opened contact group parallel connection of relay of the point driving switch of pipeline correspondence and this group pipeline correspondence is connected power supply, the other end connects the end of control coil of the relay of the end of control coil of solenoid valve of this group pipeline correspondence and this group pipeline correspondence, the other end tie-time relay normally closed contact group of the control coil of this solenoid valve is an end of connecting to neutral line not, respectively organizes the corresponding relay of pipeline untapped normally closed contact group series connection back tie-time relay normally closed contact group end of connecting to neutral line not separately outside the other end of the control coil of the relay of this group pipeline correspondence and this group; All respectively organize the live wire that an end after the second normal opened contact group parallel connection of relay of pipeline correspondence connects power supply, and the control coil that the other end connects this time relay does not connect an end of zero-power line.
Particularly: the two ends of the control coil of described solenoid valve are parallel with pilot lamp, make the operator can understand the operation implementation status intuitively.
A kind of liquid outflow amount control measuring apparatus of the present utility model, utilize a commercially available relay and point driving switch of time relay cooperation that has delay adjustments, stored count and Presentation Function and a normally closed contact group is arranged with two normal opened contact groups, control one and be installed in ducted solenoid valve unlatching then by the delay time closure of setting, and liquid accumulative total discharge in the unlatching number of times reflection pipeline of accumulative total solenoid valve.Its metering does not rely on the sensitive element that contacts with liquid, so the not influence of liquid body viscosity or adhesive attraction of the sensitivity of metering and precision, quantification stability is reliable.Be applicable to the metering of low discharge.Data are with digital display, and are readable good.Compare with the assembled scheme of electronic flow-meter and microprocessor with adopting solenoid valve, simple in structure, cost is low.For the multi units tube road, when the solenoid valve that fully takes into account one group of pipeline was opened, unlatchings that must be under an embargo of all the other solenoid valves of respectively organizing pipeline made the unlatching number of times reflection of each solenoid valve of time relay accumulative total respectively organize totally discharge of liquid total in the pipeline; It need only every group of pipeline correspondence be installed a solenoid valve, be equipped with a relay and the point driving switch with two normal opened contact groups; And all each relays with two normal opened contact groups also have the normally closed contact group, and the number of described normally closed contact group is: total pipeline group number subtracts one.In the occasion of multi units tube trace integration control metering, add ons is few, and fringe cost is low, especially is fit to the demand of the common occasion of commercially available this class of multiple bulk beverage.Solenoid valve is parallel with pilot lamp, and the operator can understand the operation implementation status intuitively.
Description of drawings
Fig. 1 is the electrical block diagram of an embodiment of the utility model.
Fig. 2 is the circuit structure block diagram of the time relay among Fig. 1 embodiment.
Fig. 3 is the electrical block diagram of another embodiment of the utility model.
Embodiment
The circuit structure of an embodiment of the utility model sees also Fig. 1.This liquid outflow amount control measuring apparatus comprises that a fuse 1 (F), pipeline (not shown) that has delay adjustments, stored count and Presentation Function and the time relay 2 (KT1) of a normally closed contact group 2-1, one group of flow of liquid warp are arranged, one are installed in this and organize ducted solenoid valve 3 (YV1), a relay 4 (KA1) and the point driving switch 5 (SB1) with two normal opened contact group 4-1,4-2.An end forms contact 11 and is connected the live wire L of power supply through fuse 1 (F) after the first normal opened contact group 4-1 parallel connection of this point driving switch 5 (SB1) and relay 4 (KA1), and the other end forms the end that contact 13 connects the control coil of the end of control coil of these solenoid valves 3 (YV1) and this relay 4 (KA1).The other end of the control coil of the other end of the control coil of this solenoid valve 3 (YV1) and this relay 4 (KA1) is connected to form the end of 12 tie-time of contact relay 2 (KT1) normally closed contact group 2-1; The two ends of the control coil of solenoid valve 4 (KA1) are parallel with pilot lamp 6 (HL1).The other end of the time relay 2 (KT1) normally closed contact group 2-1 connects the zero line N of power supply.The end of the second normal opened contact group 4-2 of relay 4 (KA1) connects contact 11, and the other end connects an end of the control coil of this time relay 2 (KT1); The other end of the control coil of this time relay 2 (KT1) connects the zero line N of power supply.
In the present embodiment, the circuit structure of the time relay 2 can be illustrated by block diagram shown in Figure 2.See also Fig. 2.The inside of the time relay 2 includes a timer 20, totalizer 201, digital LCD 202, a relay 203.Timer 20 can be externally the control of " setting time-delay " input signal realize setting the function of time-delay down, and in a single day " startup " input signal that obtains the outside is that Be Controlled begins counting, arrive the delay time of setting and send the control output signal, make relay 203 actions to relay 203; Simultaneously send the control output signal to totalizer 201, make totalizer 201 make one-accumulate and calculate, the numerical value after adding up outputs to display 202 and shows.Under the control of " zero clearing " input signal that totalizer 201 can be externally is zero with its data Compulsory Removal.
The working method of present embodiment is: earlier the time relay 2 is set time-delay, make its inner timer 20 obtain the delay value of setting, determine the closed time interval that is opened to of solenoid valve 3 (YV1) in the pipeline of flow speed stability; To the time relay 2 zero clearings, forcing the data dump with totalizer 201 is zero then, and display 202 is shown as zero; Perform the preliminary work of flow control and metering.In case point driving switch 5 (SB1) is pressed, relay 4 (KA1) thus the time time relay 2 (KT1) normally closed contact group 2-1 be the closure state action of switching on, two normal opened contact group 4-1 of relay 4 (KA1), 4-2 closure, solenoid valve 3 (YV1) and pilot lamp 6 (HL1) energising, (HL1) is luminous for pilot lamp 6, solenoid valve 3 (YV1) is opened, and this is organized ducted liquid and outwards flows out; The time relay 2 (KT1) energising obtains " startups " input signal, Be Controlled trigger time counting and its normally closed contact group 2-1 is kept closed during delay time is counted.Point driving switch 5 (SB1) is released, because the normal opened contact group 4-1 of relay 4 (KA1) is in closure state, relay 4 (KA1) keeps above-mentioned state constant with solenoid valve 3 (YV1) and pilot lamp 6 (HL1).The time relay 2 (KT1) arrives the delay time of setting, its totalizer 201 is made one-accumulate and is calculated, numerical value after adding up outputs to display 202 and shows, normally closed contact group 2-1 is disconnected simultaneously, relay 4 (KA1) is de-energized with solenoid valve 3 (YV1) and pilot lamp 6 (HL1), solenoid valve 3 (YV1) turn-offs, and this is organized ducted liquid and stops outside outflow; Pilot lamp 6 (HL1) extinguishes.Two normal opened contact group 4-1,4-2 of relay 4 (KA1) open, and the normally closed contact group 2-1 of the time relay 2 (KT1) recovers closure state.Each several part is that next operation is got ready.(SB1) is operated once whenever point driving switch 5, and solenoid valve 3 (YV1) is opened once by the time relay 2 (KT1) control, and liquid is pressed the set amount outflow in the pipeline, and this time relay 2 (KT1) inside is done stored count and shown; Solenoid valve 3 (YV1) is opened liquid outflow amount at every turn and is liquid accumulative total discharge with opening the amassing of number of times, so liquid accumulative total discharge in the unlatching number of times of the solenoid valve 3 (YV1) of the available accumulative total reflection pipeline.
For the situation in multi units tube road, please referring to the circuit structure of another embodiment of the utility model shown in Figure 3.The pipeline that four groups of flow of liquid warps are arranged in the present embodiment, solenoid valve 3 of every group of corresponding installation of pipeline; Four groups of common time relays 2 (KT1) that use of pipeline carry out flow control and metering.First group of piping erection has solenoid valve 3 (YV1), and is equipped with relay 4 (KA1), point driving switch 5 (SB1) and pilot lamp 6 (HL1).Second group of piping erection has solenoid valve 3 (YV2), and is equipped with relay 4 (KA2), point driving switch 5 (SB2) and pilot lamp 6 (HL2).The 3rd group of piping erection has solenoid valve 3 (YV3), and is equipped with relay 4 (KA3), point driving switch 5 (SB3) and pilot lamp 6 (HL3).The 4th group of piping erection has solenoid valve 3 (YV4), and is equipped with relay 4 (KA4), point driving switch 5 (SB4) and pilot lamp 6 (HL4).Each relay 4 has two normal opened contact group 4-1,4-2 and three normally closed contact group 4-3,4-4,4-5.Second normal opened contact group 4-2 of the relay 4 (KA1, KA2, KA3, KA4) of four groups of pipeline outfits is in parallel, and an end becomes the live wire L of contact 11 through fuse 1 (F) connection power supply, an end of the control coil of other end tie-time relay 2 (KT1); The other end of the control coil of the time relay 2 (KT1) connects the zero line N of power supply.The end of the normally closed contact group 2-1 of the time relay 2 (KT1) is as the contact 12 of the public use of control element of four groups of pipelines, and the other end connects the zero line N of power supply.
Control branch road for first group of pipeline, an end is connected contact 11 after the first normal opened contact group 4-1 parallel connection of point driving switch 5 (SB1) and relay 4 (KA1), an end of an end of the control coil of other end formation contact 13 connection solenoid valves 3 (YV1) and the control coil of relay 4 (KA1).The other end of the control coil of relay 4 (KA1) is connected afterwards with the normally closed contact group 4-3 of the control branch road repeat circuit 4 (KA2, KA3, KA4) of other three groups of pipelines and the other end of the control coil of solenoid valve 3 (YV1) is connected contact 12.The two ends of the control coil of solenoid valve 4 (KA1) are parallel with pilot lamp 6 (HL1).
Control branch road for second group of pipeline, an end is connected contact 11 after the first normal opened contact group 4-1 parallel connection of point driving switch 5 (SB2) and relay 4 (KA2), an end of an end of the control coil of other end formation contact 23 connection solenoid valves 3 (YV2) and the control coil of relay 4 (KA2).The other end of the normally closed contact group 4-4 series connection back of the control branch road repeat circuit 4 (KA3, KA4) of the normally closed contact group 4-3 of the other end of the control coil of relay 4 (KA2) and the control branch road repeat circuit 4 (KA1) of first group of pipeline, third and fourth group pipeline and the control coil of solenoid valve 3 (YV2) is connected contact 12.The two ends of the control coil of solenoid valve 4 (KA2) are parallel with pilot lamp 6 (HL2).
Control branch road for the 3rd group of pipeline, an end is connected contact 11 after the first normal opened contact group 4-1 parallel connection of point driving switch 5 (SB3) and relay 4 (KA3), an end of an end of the control coil of other end formation contact 33 connection solenoid valves 3 (YV3) and the control coil of relay 4 (KA3).The other end of the control coil of relay 4 (KA3) is connected afterwards with normally closed contact group 4-5 of the control branch road repeat circuit 4 (KA4) of the normally closed contact group 4-4 of the control branch road repeat circuit 4 (KA1, KA2) of first and second group pipeline, the 4th group of pipeline and the other end of the control coil of solenoid valve 3 (YV3) is connected contact 12.The two ends of the control coil of solenoid valve 4 (KA3) are parallel with pilot lamp 6 (HL3).
Control branch road for the 4th group of pipeline, an end is connected contact 11 after the first normal opened contact group 4-1 parallel connection of point driving switch 5 (SB4) and relay 4 (KA4), an end of an end of the control coil of other end formation contact 43 connection solenoid valves 3 (YV4) and the control coil of relay 4 (KA4).The other end of the control coil of relay 4 (KA4) is connected afterwards with the normally closed contact group 4-5 of the control branch road repeat circuit 4 (KA1, KA2, KA3) of other three groups of pipelines and the other end of the control coil of solenoid valve 3 (YV4) is connected contact 12.The two ends of the control coil of solenoid valve 4 (KA4) are parallel with pilot lamp 6 (HL4).
The working method of present embodiment is: earlier the time relay 2 is set time-delay, determine flow speed stability and the identical time that is opened to closure of respectively organizing solenoid valve 3 unifications in the pipeline; Then to the time relay 2 zero clearings; Perform the preliminary work of flow control and counting.In case there are some point driving switch 5 to be pressed, for example the point driving switch 5 (SB1) of first group of pipeline correspondence is pressed, relay 4 (KA1) thus the time time relay 2 (KT1) the normally closed contact group 2-1 and the normally closed contact group 4-3 of the control branch road repeat circuit 4 (KA2, KA3, KA4) of other three groups of pipelines be the closure state action of switching on, two normal opened contact group 4-1 of relay 4 (KA1), 4-2 closure, solenoid valve 3 (YV1) and pilot lamp 6 (HL1) energising, (HL1) is luminous for pilot lamp 6, solenoid valve 3 (YV1) is opened, and this is organized ducted liquid and outwards flows out; The time relay 2 (KT1) energising obtains " startups " input signal, Be Controlled trigger time counting and its normally closed contact group 2-1 is kept closed during delay time is counted.Simultaneously, three normally closed contact group 4-3 of relay 4 (KA1), 4-4,4-5 disconnect, even press other point driving switch 5 again, and relay 4 of other group pipeline correspondence action of also can not switching on.Point driving switch 5 (SB1) is released, because the normal opened contact group 4-1 of relay 4 (KA1) is in closure state, relay 4 (KA1) keeps above-mentioned state constant with solenoid valve 3 (YV1) and pilot lamp 6 (HL1).The time relay 2 (KT1) arrives the delay time of setting, its totalizer 201 is made one-accumulate and is calculated, numerical value after adding up outputs to display 202 and shows, normally closed contact group 2-1 is disconnected simultaneously, relay 4 (KA1) is de-energized with solenoid valve 3 (YV1) and pilot lamp 6 (HL1), solenoid valve 3 (YV1) turn-offs, and this is organized ducted liquid and stops outside outflow; Pilot lamp 6 (HL1) extinguishes.Two normal opened contact group 4-1,4-2 of relay 4 (KA1) open, three normally closed contact group 4-3,4-4,4-5 closure, and the normally closed contact group 2-1 of the time relay 2 (KT1) recovers closure state.Each several part is that next operation is got ready.Situation after other point driving switch 5 of respectively organizing pipeline is pressed is not similarly repeated one by one.Whenever there being point driving switch 5 to be operated once, corresponding solenoid valve 3 is opened once by the time relay 2 (KT1) control, and liquid is pressed the set amount outflow in the corresponding pipeline, and the time relay 2 (KT1) inside is done stored count and shown; The total accumulative total discharge of liquid in the pipeline is respectively organized in unlatching number of times reflection with each solenoid valve 3 that adds up.Use present embodiment, businessman can be at the beverage of the identical price different taste of supply in the pipeline on the same group not, in the pipeline solenoid valve 3 every unlatchings once, in fact corresponding liquid flows out one glass, one bag or a box, businessman can tie the sales volume of Suan beverage by the inferior logarithmic data that time relay 2 (KT1) shows.This practice, businessman feels intuitively, and glad the use.
Claims (3)
1. liquid outflow amount control measuring apparatus is characterized in that: the pipeline, one that comprise a time relay that has delay adjustments, stored count and Presentation Function and a normally closed contact group is arranged, one group of flow of liquid warp are installed in this and organize ducted solenoid valve, a relay and the point driving switch with two normal opened contact groups; An end is connected the live wire of power supply after the first normal opened contact group parallel connection of this point driving switch and relay, and the other end connects an end of the control coil of the end of control coil of this solenoid valve and this relay; One end of the other end tie-time relay normally closed contact group of the other end of the control coil of this solenoid valve and the control coil of this relay; The other end of time relay normally closed contact group connects the zero line of power supply; One end of the second normal opened contact group of relay connects the live wire of power supply, and the other end connects an end of the control coil of this time relay; The other end of the control coil of this time relay connects the zero line of power supply.
2. a kind of liquid outflow amount control measuring apparatus according to claim 1, it is characterized in that: also comprise the pipeline of at least one group of flow of liquid warp, an every group of corresponding solenoid valve, relay and point driving switch of outfit installed of pipeline with two normal opened contact groups; Described all each relays with two normal opened contact groups also have several normally closed contact groups of group of described additional pipeline; All respectively organize the live wire that an end after the first normal opened contact group parallel connection of relay of the point driving switch of pipeline correspondence and this group pipeline correspondence is connected power supply, the other end connects the end of control coil of the relay of the end of control coil of solenoid valve of this group pipeline correspondence and this group pipeline correspondence, the other end tie-time relay normally closed contact group of the control coil of this solenoid valve is an end of connecting to neutral line not, respectively organizes the corresponding relay of pipeline untapped normally closed contact group series connection back tie-time relay normally closed contact group end of connecting to neutral line not separately outside the other end of the control coil of the relay of this group pipeline correspondence and this group; All respectively organize the live wire that an end after the second normal opened contact group parallel connection of relay of pipeline correspondence connects power supply, and the control coil that the other end connects this time relay does not connect an end of zero-power line.
3. a kind of liquid outflow amount control measuring apparatus according to claim 1 and 2, it is characterized in that: the two ends of the control coil of described solenoid valve are parallel with pilot lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03215874 CN2606341Y (en) | 2003-03-20 | 2003-03-20 | Liquid outlet controlling and metering installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03215874 CN2606341Y (en) | 2003-03-20 | 2003-03-20 | Liquid outlet controlling and metering installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2606341Y true CN2606341Y (en) | 2004-03-10 |
Family
ID=34160518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03215874 Expired - Fee Related CN2606341Y (en) | 2003-03-20 | 2003-03-20 | Liquid outlet controlling and metering installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2606341Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274346A (en) * | 2013-05-30 | 2013-09-04 | 广西红墙新材料有限公司 | Liquid quantitative feeding device |
| CN109236517A (en) * | 2018-09-26 | 2019-01-18 | 潍柴动力股份有限公司 | A kind of fuel filter of engine, fuel system and fault detection means |
| CN109999231A (en) * | 2019-04-03 | 2019-07-12 | 广州医科大学附属第二医院 | A kind of urine collecting device of the medical monitoring with accurate function of measuring |
-
2003
- 2003-03-20 CN CN 03215874 patent/CN2606341Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274346A (en) * | 2013-05-30 | 2013-09-04 | 广西红墙新材料有限公司 | Liquid quantitative feeding device |
| CN103274346B (en) * | 2013-05-30 | 2015-03-25 | 广西红墙新材料有限公司 | Liquid quantitative feeding device |
| CN109236517A (en) * | 2018-09-26 | 2019-01-18 | 潍柴动力股份有限公司 | A kind of fuel filter of engine, fuel system and fault detection means |
| CN109999231A (en) * | 2019-04-03 | 2019-07-12 | 广州医科大学附属第二医院 | A kind of urine collecting device of the medical monitoring with accurate function of measuring |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3555901A (en) | Method of and apparatus for measuring varying fluid flow | |
| US3036585A (en) | Fuel dispensing system | |
| CN203906448U (en) | Hydraulic component performance testing system | |
| CN101533003B (en) | Device for monitoring oil contamination | |
| US3410138A (en) | Wide range flow meter | |
| CN2606341Y (en) | Liquid outlet controlling and metering installation | |
| GB1306716A (en) | Flow measuring apparatus | |
| CN102096387A (en) | Automatic control system used for crude oil automatic online sampler | |
| CN100587466C (en) | low-pressure test system of seawater reverse osmosis membrane performance and test method thereof | |
| CN1687718A (en) | Method for calibrating flow meter and applied system for calibrating flow meter | |
| CN102562564B (en) | Hardware system of high-pressure pump performance test table using PXI bus technology | |
| CN100451601C (en) | Gasoline filter impulse test device | |
| CN112882453A (en) | Fuel system flow resistance test bed based on PLC control and test method thereof | |
| CN109932283B (en) | Device and method for measuring apparent viscosity of non-Newtonian fluid at high shear rate | |
| CN201397329Y (en) | Oil contamination-monitoring system | |
| CN202002822U (en) | Automatic crude oil sampling and control device | |
| US3429480A (en) | Dispensing apparatus for a blend of two liquids with cost increment means | |
| CN2660513Y (en) | Current-carrying spiral tube type ore pulp densimeter | |
| CN201455255U (en) | Continuous casting argon blowing intelligent control system | |
| CN2558841Y (en) | Liquefied petroleum gas filling machine | |
| CN203772340U (en) | Alternating filling type liquid flow measuring device | |
| CN107743733B (en) | A kind of hydraulic pump flow test device | |
| CN201507434U (en) | Laboratory water purifier water purification pump testing device | |
| US2936096A (en) | Fuel dispensing system | |
| CN2277513Y (en) | Intermittent high-pressure gas flowmeter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |