CN106768202B - Weighing oil discharging mechanism of micro flow standard device - Google Patents
Weighing oil discharging mechanism of micro flow standard device Download PDFInfo
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- CN106768202B CN106768202B CN201611233116.5A CN201611233116A CN106768202B CN 106768202 B CN106768202 B CN 106768202B CN 201611233116 A CN201611233116 A CN 201611233116A CN 106768202 B CN106768202 B CN 106768202B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
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- General Physics & Mathematics (AREA)
- Feeding And Controlling Fuel (AREA)
- Loading And Unloading Of Fuel Tanks Or Ships (AREA)
Abstract
The invention relates to a weighing oil discharging mechanism of a micro flow standard device, which comprises an oil inlet pipe, a weighing cup and an oil discharging mechanism, wherein the weighing cup is arranged on a balance, the lower end of the oil inlet pipe stretches into the weighing cup and is close to the side wall of the weighing cup, the lower port of the oil inlet pipe is higher than the liquid level of liquid oil, the oil discharging mechanism comprises a self-sucking pump, a cylinder with a piston rod and an electromagnetic reversing valve communicated with the cylinder, the piston rod of the cylinder descends, the density of an oil sucking head made of metal materials is high, the weighed liquid oil is sucked into an oil tank by the self-sucking pump through the oil sucking pipe and an oil return pipe, and after oil sucking is finished, the piston rod of the cylinder ascends to be above the liquid level of the maximum liquid oil quantity of the weighing cup.
Description
Technical Field
The invention belongs to the technical field of liquid flow metering devices, and particularly relates to a weighing oil discharging mechanism of a micro flow standard device.
Background
The weighing container in the static weighing method liquid flow standard device is arranged on a balance or the balance, the weighing container is used for collecting liquid flowing in from an oil inlet pipe, the balance is used for weighing the weighing container before and after the liquid flows in, the two weight differences are the standard weight of the liquid flowing in, the liquid in the weighing container is required to be discharged after the weighing is finished, and then the next weighing is carried out. When the weighing container and the weighing apparatus are large enough, a liquid discharge valve is usually arranged at the bottom of the weighing container and is used for manually or automatically discharging liquid; when the measuring range of the weighing apparatus is small, no redundant tare is used for installing a liquid discharge valve, the liquid discharge mode of the existing small weighing system adopts a manual dumping mode, the manual operation is complicated, and the manual dumping and resetting are easy to cause human errors in the weighing system.
Disclosure of Invention
In order to solve the technical problems, the invention provides a weighing and oil discharging mechanism of a micro-flow standard device.
The technical scheme of the invention is as follows: the utility model provides a tiny flow standard device oil discharge mechanism that weighs, includes advance oil pipe, weighs cup and oil discharge mechanism, weigh the cup and place on the balance, advance the lower extreme of oil pipe and stretch into the weighing cup and be close to the lateral wall of weighing the cup, advance the lower port of oil pipe and be higher than the liquid level of liquid oil, oil discharge mechanism includes self priming pump, the cylinder of taking the piston rod and the electromagnetic reversing valve with the cylinder intercommunication, electromagnetic reversing valve is two cross valves, two valve ports are connected atmosphere and intake pipe respectively about the upper end of electromagnetic reversing valve, two valve ports are connected with the upper chamber and the lower chamber of cylinder respectively through upper end trachea and right lower extreme trachea about the lower extreme of electromagnetic reversing valve, the lower extreme of piston rod is fixed with the connecting block, the left side of connecting block is worn to return oil pipe and is fixed, return oil pipe and suction pipe are in the connecting block internal connection together, the lower extreme of returning oil pipe stretches into the weighing cup and is connected with the oil suction head, return oil pipe's left end and self priming pump are connected with after stretching into, the intake pipe is connected with the intake pipe.
Preferably, the oil suction head is made of metal and has a density greater than that of the liquid oil.
Preferably, the oil suction head is made of copper.
The beneficial effects of the invention are as follows:
the weighing oil discharging mechanism of the micro flow standard device is provided with the oil discharging mechanism, the piston rod of the air cylinder descends, the density of the oil suction head made of metal is high, the weighed liquid oil is sunk into the bottom of the liquid oil, the liquid oil is sucked into the oil tank through the oil suction pipe and the oil return pipe by the self-sucking pump, after oil suction is finished, the piston rod of the air cylinder ascends, the oil suction head ascends to be above the liquid level of the maximum liquid oil quantity of the weighing cup, the liquid oil can be automatically discharged, manual dumping is avoided, and human error is prevented.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
in the figure: 1. the self-priming pump comprises a self-priming pump body, a cylinder body, an upper end air pipe, an air inlet pipe, an electromagnetic reversing valve, an air outlet pipe, an oil return pipe, an oil tank, an oil suction pipe, a piston rod, a connecting block, a weighing cup, a liquid oil pipe, an oil suction head, a balance and an oil inlet pipe.
Description of the embodiments
Detailed description of the invention referring to fig. 1.
The first embodiment of the invention relates to a weighing oil discharging mechanism of a micro flow standard device, which comprises an oil inlet pipe, a weighing cup and an oil discharging mechanism, wherein the weighing cup is placed on a balance, the lower end of the oil inlet pipe stretches into the weighing cup and is close to the side wall of the weighing cup, the lower port of the oil inlet pipe is higher than the liquid level of liquid oil, the oil discharging mechanism comprises a self-priming pump, a cylinder with a piston rod and an electromagnetic reversing valve communicated with the cylinder, the electromagnetic reversing valve is a two-position four-way valve, the left valve port and the right valve port of the upper end of the electromagnetic reversing valve are respectively connected with atmosphere and an air inlet pipe, the left valve port and the right valve port of the electromagnetic reversing valve are respectively connected with the upper cavity and the lower cavity of the cylinder through an upper air pipe and a right lower air pipe, the lower end of the piston rod is fixedly connected with a connecting block, an oil return pipe is penetrated and fixedly arranged at the left side of the connecting block, the lower end of the connecting block is penetrated with an oil suction pipe and fixedly arranged in the connecting block, the lower end of the oil suction pipe is connected with an oil suction head in the weighing cup, the left end of the oil return pipe is connected with the self-priming pump, and the left end of the oil return pipe is connected with an air inlet pipe, and the oil source is high in density and is connected with a high-density liquid material.
The second embodiment of the invention relates to a weighing oil discharging mechanism of a micro flow standard device, which comprises an oil inlet pipe, a weighing cup and an oil discharging mechanism, wherein the weighing cup is placed on a balance, the lower end of the oil inlet pipe extends into the weighing cup and is close to the side wall of the weighing cup, the lower end opening of the oil inlet pipe is higher than the liquid level of liquid oil, the oil discharging mechanism comprises a self-priming pump, a cylinder with a piston rod and an electromagnetic reversing valve communicated with the cylinder, the electromagnetic reversing valve is a two-position four-way valve, the left valve opening and the right valve opening of the upper end of the electromagnetic reversing valve are respectively connected with the atmosphere and an air inlet pipe, the left valve opening and the right valve opening of the electromagnetic reversing valve are respectively connected with the upper cavity and the lower cavity of the cylinder through an upper air pipe and a right lower air pipe, the lower end of the piston rod is fixedly provided with a connecting block, the left side of the connecting block is penetrated with an oil return pipe and fixedly, the lower end of the connecting block is penetrated with an oil suction pipe fixedly, the oil return pipe and the oil suction pipe is connected in the connecting block, the lower end of the oil suction pipe is connected with an oil suction head in the weighing cup, the left end of the oil return pipe is connected with an oil suction head, and the left end of the oil return pipe is connected with an oil tank.
Working principle:
the self-priming pump and the electromagnetic reversing valve are simultaneously electrified or powered off.
Initial state: the weighing cup is free of liquid oil, the electromagnetic reversing valve is powered off and is positioned at the right position, the piston rod is retracted upwards, and the oil suction head of the oil suction pipe is lifted to be above the liquid level of the maximum liquid oil quantity of the weighing cup; the self-priming pump is powered off and stops working.
Weighing, reading and recording the indication of the balance when the liquid oil is not in the weighing cup.
The liquid oil flows into the weighing cup from the oil inlet pipe.
And (3) weighing, namely reading out the indication of the balance after oil drops at the lower port of the oil inlet pipe completely enter the weighing cup, and subtracting the indication of the balance before oil inlet to obtain the mass of liquid oil entering the weighing cup.
When oil is discharged, the electromagnetic directional valve is electrified and is switched to the left position, gas in the compressed air source enters the upper cavity of the air cylinder through the air inlet pipe, the electromagnetic directional valve and the upper air pipe, gas in the lower cavity of the air cylinder is discharged into the atmosphere through the lower air pipe and the electromagnetic directional valve, the piston rod stretches out downwards, the oil suction head at the lower end of the oil suction pipe falls into the bottom of the weighing cup under the action of gravity, the self-sucking pump and the electromagnetic directional valve are electrified simultaneously, the self-sucking pump starts to work, and liquid oil in the weighing cup is sucked into the oil tank through the oil suction pipe and the oil return pipe.
After oil discharge is finished, the electromagnetic reversing valve is electrified and switched to the right position, the piston rod is retracted upwards, and the oil suction head of the oil suction pipe is lifted to be above the liquid level of the maximum liquid oil quantity of the weighing cup; the self-priming pump is powered off and stops working; returning to the initial state.
Claims (3)
1. The oil discharging mechanism comprises a self-priming pump, a cylinder with a piston rod and an electromagnetic reversing valve communicated with the cylinder, wherein the electromagnetic reversing valve is a two-position four-way valve, the left valve port and the right valve port of the upper end of the electromagnetic reversing valve are respectively connected with the atmosphere and an air inlet pipe, the left valve port and the right valve port of the lower end of the electromagnetic reversing valve are respectively connected with the upper cavity and the lower cavity of the cylinder through an upper-end air pipe and a right lower-end air pipe, the lower end of the piston rod is fixedly connected with a connecting block, an oil return pipe penetrates through the left side of the connecting block and is fixedly connected with the lower end of the connecting block, the oil return pipe and the oil suction pipe are connected together in the connecting block, the lower end of the oil suction pipe penetrates into the weighing cup and is connected with an oil suction head, and the left end of the oil return pipe and the self-priming pump are connected with the air inlet pipe and then extend into the air source; the self-priming pump and the electromagnetic reversing valve are simultaneously electrified or powered off.
2. The micro-flow standard device weighing drain mechanism of claim 1, wherein: the oil suction head is made of metal and has a density greater than that of liquid oil.
3. The micro-flow standard device weighing drain mechanism of claim 1, wherein: the oil suction head is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233116.5A CN106768202B (en) | 2016-12-28 | 2016-12-28 | Weighing oil discharging mechanism of micro flow standard device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611233116.5A CN106768202B (en) | 2016-12-28 | 2016-12-28 | Weighing oil discharging mechanism of micro flow standard device |
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| Publication Number | Publication Date |
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| CN106768202A CN106768202A (en) | 2017-05-31 |
| CN106768202B true CN106768202B (en) | 2023-05-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9204065D0 (en) * | 1992-02-26 | 1992-04-08 | British Petroleum Co Plc | Improvements relating to flow measurement |
| JP2001215145A (en) * | 2000-01-31 | 2001-08-10 | Tokiko Techno Kk | Flowmeter calibration system |
| JP2006105957A (en) * | 2004-09-10 | 2006-04-20 | National Institute Of Advanced Industrial & Technology | Liquid flow-meter calibration device |
| CN104132716A (en) * | 2014-08-11 | 2014-11-05 | 丹东意邦计量仪器仪表有限公司 | Vehicle-mounted oil flow standard device |
| CN206440355U (en) * | 2016-12-28 | 2017-08-25 | 新乡航空工业(集团)有限公司 | Micro flow standard device is weighed oil-releasing mechanism |
-
2016
- 2016-12-28 CN CN201611233116.5A patent/CN106768202B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9204065D0 (en) * | 1992-02-26 | 1992-04-08 | British Petroleum Co Plc | Improvements relating to flow measurement |
| JP2001215145A (en) * | 2000-01-31 | 2001-08-10 | Tokiko Techno Kk | Flowmeter calibration system |
| JP2006105957A (en) * | 2004-09-10 | 2006-04-20 | National Institute Of Advanced Industrial & Technology | Liquid flow-meter calibration device |
| CN104132716A (en) * | 2014-08-11 | 2014-11-05 | 丹东意邦计量仪器仪表有限公司 | Vehicle-mounted oil flow standard device |
| CN206440355U (en) * | 2016-12-28 | 2017-08-25 | 新乡航空工业(集团)有限公司 | Micro flow standard device is weighed oil-releasing mechanism |
Non-Patent Citations (2)
| Title |
|---|
| 官志坚 ; 刘彦军 ; 周晓 ; .润滑油介质微小流量标准装置的研制.测试技术学报.2013,(第04期),全文. * |
| 田冠亚 ; 程佳 ; 李文军 ; 詹志杰 ; .150mL活塞式液体微小流量计量标准装置的研究.传感器与微系统.2011,(第12期),全文. * |
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