CN203101212U - Device for determining water content of organic soil - Google Patents
Device for determining water content of organic soil Download PDFInfo
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- CN203101212U CN203101212U CN 201320023344 CN201320023344U CN203101212U CN 203101212 U CN203101212 U CN 203101212U CN 201320023344 CN201320023344 CN 201320023344 CN 201320023344 U CN201320023344 U CN 201320023344U CN 203101212 U CN203101212 U CN 203101212U
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- oven
- negative pressure
- baking oven
- air inlet
- vacuum pump
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Abstract
The utility model discloses a device for determining the water content of organic soil. The device consists of a pressure-stabilizing vacuum pump, a negative pressure oven, a counter balance, a transparent oven door, a pair of internal weighing gloves, a temperature regulator, an oven internal humidity monitor, a dry air inlet, an air inlet regulating valve, a vacuum table and an air exhaust valve, wherein the top of the oven and the oven door are transparent and visible; two circular holes are formed in the oven door and are connected with the pair of internal weighing gloves; the air inlet is formed in the right side of an oven body; an air inlet valve is arranged at the tail end of an air inlet pipe; an air exhaust port is formed in the top of the oven body and is connected with the vacuum pump through an air exhaust pipeline; the vacuum meter is arranged at the tail end of the air exhaust pipeline; the air exhaust valve is arranged between the vacuum meter and the vacuum pump; a high-accuracy counter balance and an internal humidity meter are arranged in the oven; and the temperature regulator and the oven internal humidity monitor which is connected with the internal humidity meter are arranged outside the negative pressure oven. Without sample taking, the device can determine the water content of a sample, and the obtained water content of the sample is true and reliable.
Description
Technical field
The utility model relates to a kind of measurement mechanism, specifically a kind of device that is used to measure high organic content great soil group water percentage.
Background technology
General control temperature was 105 ℃ ~ 110 ℃ when the laboratory using oven drying method was measured native water percentage, be for guaranteeing that the moisture in the soil can fully volatilize, but chemical constitution organic in the organic soil is mainly carbohydrates, protein, fat, hydrocarbon etc., these organic compositions can decompose and carbonization under this temperature, and then volatilization, therefore can cause the measured value of water percentage bigger than normal.So adopt 65 ℃ ~ 70 ℃ temperature to dry to the method for constant weight to measure its water percentage for organic soil is normal, but this method is not only consuming time long, and, can not guarantee that moisture volatilizees fully because temperature does not reach the boiling point of water, influence the mensuration of true water percentage.At the defective of above-mentioned test method, can be by vacuumizing the boiling point that reduces water, and heat drying is realized the measurement of water-content coefficient of organic soil.
And traditional heating in vacuum technology has following deficiency:
1. mostly be the main equipment that is used for fresh food materials preservation, can't be applied to small-scale tests such as measurement of water-content coefficient.
2. can't carry out quality weighing in oven interior, and when the test soil sample when baking oven is taken out, airborne water vapour makes the mensuration out of true of water percentage because internal-external temperature difference can enter into the soil body again.
3. the space in vacuumizing rear box is sealed, and in drying course, the water vapour in the soil sample constantly enters casing and but can not discharge, and the case internal gas pressure is increased, and the residual moisture in the soil sample can't evaporate, thereby causes the measurement result of water percentage on the low side.
Summary of the invention
At the deficiencies in the prior art, the purpose of this utility model to provide a kind of can low temperature drying and under the freeze-day with constant temperature condition, measure the device of organic soil water percentage.
The measurement of water-content coefficient device of the organic soil that the utility model provides comprises the voltage stabilizing vacuum pump, the negative pressure baking oven, counter balance, transparent oven door, inner weighing gloves, humidostat, humidity monitor in the case, the dry air air intake opening, the air inlet adjustment valve, vacuum meter and evacuating valve, the negative pressure baking oven is a hermetically-sealed construction, described negative pressure baking oven casing right side is provided with air intake opening, the draft tube end is provided with air intake valve, a bleeding point is left at the casing top, link to each other with vacuum pump by pump-line, the pump-line end is provided with vacuum meter, arranges evacuating valve at vacuum meter between vacuum pump; Described negative pressure baking oven top and chamber door material are transparent visual, and two round holes are set on chamber door, link a pair of built-in function gloves that stretch in the baking oven on the round hole, and gloves are made with high-strength rubber-like gas impermeable material and terminal and chamber door sealing binding; A high precision counter balance is set in the described baking oven, and is provided with built-in hygrometer, the negative pressure baking oven outside is provided with humidity monitor in the case that humidostat reaches with built-in hygrometer links to each other.The voltage stabilizing vacuum pump makes and produces stable negative pressure in the baking oven, regulate temperature in the baking oven by humidostat, humidity monitor is used to monitor the humidity in the baking oven in the case, open dry air air intake opening feeding dry air when humidity is too high and be used to discharge water vapour in the baking oven, the dry air air intake opening is provided with the air inlet adjustment valve, be used to regulate the air inflow and the air inlet speed of dry air,, keep negative pressure in the baking oven by closing evacuating valve by negative pressure value in the vacuum meter inspection box.Low temperature flash baking sample under this subnormal ambient, guarantee the sample organic matter not decompose and moisture evaporation is discharged fully, and carry out weighing in oven interior by inner weighing gloves, need not take out sample and can measure the sample water percentage, thereby obtain true and reliable sample water percentage.
The beneficial effects of the utility model are, but low temperature flash baking organic soil sample under subnormal ambient, guarantee that organic matter does not decompose and moisture evaporation is complete, feeding stable dry air when vacuumizing discharges the water vapour in the case, need not take out sample during the weighing sample and can measure the sample water percentage, the sample water percentage of acquisition is true and reliable.
Description of drawings
Fig. 1 is the structural representation of utility model
Among the figure: 1, voltage stabilizing vacuum pump, 2, the negative pressure baking oven, 3, counter balance, 4, transparent oven door, 5, inner weighing gloves, 6, humidostat, 7, humidity monitor in the case, 8, the dry air air intake opening, 9, air inlet adjustment valve, 10, vacuum meter, 11, evacuating valve.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in Figure 1, the content of organic matter soil measurement of water-content coefficient device that the utility model provides comprises voltage stabilizing vacuum pump 1, negative pressure baking oven 2, counter balance 3, transparent oven door 4, inner weighing gloves 5, humidostat 6, humidity monitor 7 in the case, dry air air intake opening 8, air inlet adjustment valve 9, vacuum meter 10 and evacuating valve 11, its main structure body is a negative pressure baking oven 2, negative pressure baking oven 2 is provided with transparent oven door 4, two round holes are set on the transparent oven door 4, link a pair of inside weighing gloves 5 that stretch in the baking oven on the circle hole, the high-strength rubber-like gas impermeable material of inner weighing gloves 5 usefulness is made and terminal and chamber door sealing binding, when transparent oven door 4 was closed, negative pressure baking oven 2 was a sealing system.Negative pressure baking oven 2 right sides are provided with dry air air intake opening 8, and the draft tube end is provided with air inlet adjustment valve 9, and dry air air intake opening 8 can feed dry air and discharge water vapour in the baking oven, and air inlet adjustment valve 9 is used to regulate the air inflow and the air inlet speed of dry air.Pump-line is offered at the casing top, link to each other with vacuum pump 1 by pump-line, the pump-line end is provided with vacuum meter 10, between vacuum pump 1, arrange evacuating valve 11 at vacuum meter 10, voltage stabilizing vacuum pump 1 makes and produces stable negative pressure in the baking oven, and can keep negative pressure in the baking oven by closing evacuating valve 11; The negative pressure oven interior is provided with a high precision counter balance 3, and be provided with built-in hygrometer, the negative pressure baking oven outside is provided with humidity monitor 7 in the case that humidostat 6 reaches with built-in hygrometer links to each other, regulate temperature in the baking oven by humidostat 6, humidity monitor 7 is used to monitor the humidity in the baking oven in the case.
When using the measurement of water-content coefficient device of organic soil, in the aluminium box of the known weight of at first organic soil sample to be measured being packed into, the weighing gross mass is placed in the negative pressure baking oven 2, shut transparent oven door 4, open evacuating valve 11 and voltage stabilizing vacuum pump 1, when negative pressure in the case reaches a stationary value, close evacuating valve 11 and close voltage stabilizing vacuum pump 1; Open the baking oven power supply, regulate temperature in the baking oven, make the boiling point (as vacuum meter demonstration-0.07Mpa, scalable the temperature inside the box be 70 °) of the temperature inside the box a little more than water under the corresponding negative pressure by humidostat 6.Humidity monitor 7 in the inspection box, when tabular value during greater than 90 %RH, open evacuating valve 11, voltage stabilizing vacuum pump 1 and air inlet adjustment valve 9, feed dry air and discharge water vapour in the case, close air inlet adjustment valve 9 afterwards, when negative regulation in the case and with identical before after close evacuating valve 11 and close voltage stabilizing vacuum pump 1.After the cycling 5 ~ 6 hours, close the baking oven power supply, treat that temperature is recovered normal temperature in the baking oven after, by inner weighing gloves 5 sample is put on the built-in counter balance 3 and carries out weighing.After measuring end, open air inlet adjustment valve 9, observe vacuum meter 10, when the baking oven internal gas pressure returns to normal pressure, open transparent oven door 4, take out sample.
Claims (3)
1. the determinator of an organic soil water percentage, comprise the voltage stabilizing vacuum pump, the negative pressure baking oven, counter balance, transparent oven door, inner weighing gloves, humidostat, humidity monitor in the case, the dry air air intake opening, the air inlet adjustment valve, vacuum meter and evacuating valve, it is characterized in that: described negative pressure baking oven is a hermetically-sealed construction, negative pressure baking oven casing right side is provided with air intake opening, the draft tube end is provided with air intake valve, a bleeding point is left at the casing top, link to each other with vacuum pump by pump-line, the pump-line end is provided with vacuum meter, arranges evacuating valve at vacuum meter between vacuum pump; Two round holes are set on the described negative pressure oven door, and sealing links a pair of inside weighing gloves that stretch in the baking oven on the circle hole; A high precision counter balance is set in the described negative pressure baking oven, also is provided with built-in hygrometer in the negative pressure baking oven, the negative pressure baking oven outside is provided with humidity monitor in the case that humidostat reaches with built-in hygrometer links to each other.
2. the determinator of a kind of organic soil water percentage according to claim 1 is characterized in that: described inner weighing gloves are made with high-strength rubber-like gas impermeable material.
3. the determinator of a kind of organic soil water percentage according to claim 1 is characterized in that: described negative pressure baking oven top and chamber door material are transparent visual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320023344 CN203101212U (en) | 2013-01-17 | 2013-01-17 | Device for determining water content of organic soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320023344 CN203101212U (en) | 2013-01-17 | 2013-01-17 | Device for determining water content of organic soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203101212U true CN203101212U (en) | 2013-07-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320023344 Expired - Fee Related CN203101212U (en) | 2013-01-17 | 2013-01-17 | Device for determining water content of organic soil |
Country Status (1)
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| CN (1) | CN203101212U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486842A (en) * | 2016-01-18 | 2016-04-13 | 信阳农林学院 | Device for measuring three-phase ratio of soil and method for measuring three-phase ratio of soil through device |
| CN106053287A (en) * | 2016-07-29 | 2016-10-26 | 无锡市三峰仪器设备有限公司 | Efficient moisture measurement instrument |
| CN107515172A (en) * | 2016-06-17 | 2017-12-26 | 北新集团建材股份有限公司 | A kind of method of quick measure plaster of Paris attached water |
| CN107607179A (en) * | 2017-10-18 | 2018-01-19 | 上海合全药物研发有限公司 | The balance humid control glove box and method weighed for easy moisture absorption material |
| CN108072585A (en) * | 2017-11-17 | 2018-05-25 | 长沙开元仪器股份有限公司 | A kind of Moisture Meter |
| CN108801842A (en) * | 2018-06-15 | 2018-11-13 | 武汉理工大学 | A kind of method of quick measurement slag residual moisture content |
| CN109612873A (en) * | 2018-12-27 | 2019-04-12 | 温州际高检测仪器有限公司 | Full-automatic fiber quantitative chemical analysis baking oven |
| CN114624074A (en) * | 2022-01-18 | 2022-06-14 | 中南大学 | Negative pressure dehumidifying device and using method thereof |
-
2013
- 2013-01-17 CN CN 201320023344 patent/CN203101212U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486842A (en) * | 2016-01-18 | 2016-04-13 | 信阳农林学院 | Device for measuring three-phase ratio of soil and method for measuring three-phase ratio of soil through device |
| CN107515172A (en) * | 2016-06-17 | 2017-12-26 | 北新集团建材股份有限公司 | A kind of method of quick measure plaster of Paris attached water |
| CN106053287A (en) * | 2016-07-29 | 2016-10-26 | 无锡市三峰仪器设备有限公司 | Efficient moisture measurement instrument |
| CN107607179A (en) * | 2017-10-18 | 2018-01-19 | 上海合全药物研发有限公司 | The balance humid control glove box and method weighed for easy moisture absorption material |
| CN108072585A (en) * | 2017-11-17 | 2018-05-25 | 长沙开元仪器股份有限公司 | A kind of Moisture Meter |
| CN108801842A (en) * | 2018-06-15 | 2018-11-13 | 武汉理工大学 | A kind of method of quick measurement slag residual moisture content |
| CN109612873A (en) * | 2018-12-27 | 2019-04-12 | 温州际高检测仪器有限公司 | Full-automatic fiber quantitative chemical analysis baking oven |
| CN114624074A (en) * | 2022-01-18 | 2022-06-14 | 中南大学 | Negative pressure dehumidifying device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130731 Termination date: 20160117 |
|
| EXPY | Termination of patent right or utility model |