CN2314364Y - Negative pressure meter for soil with automatic water supply - Google Patents
Negative pressure meter for soil with automatic water supply Download PDFInfo
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- CN2314364Y CN2314364Y CN 97247887 CN97247887U CN2314364Y CN 2314364 Y CN2314364 Y CN 2314364Y CN 97247887 CN97247887 CN 97247887 CN 97247887 U CN97247887 U CN 97247887U CN 2314364 Y CN2314364 Y CN 2314364Y
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- collection chamber
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Abstract
The utility model provides a negative pressure meter for soil with automatic water supply, composed of a clay pipe, a communicating pipe, a negative pressure indicator and an air collection chamber. The upper end of the air collection chamber is provided with a water supply device which is composed of a water storage cavity and a connection neck. The central position of the connection neck is provided with a small hole which makes the air collection chamber and the water storage cavity mutually communicated, and simultaneously, a movable valve is arranged on the small hole. The upper end of the air collection chamber and the connection neck of the water supply device are made into a structure of screw thread openings which are mutually matched. The top of the water storage cavity is provided with a water adding opening, and a closing plug is also arranged on the water adding opening.
Description
The utility model belongs to technical field of measurement and test, relates to a kind of instrument of measuring soil water suction and soil moisture, particularly a kind of automatic water supplement formula soil depressimeter.
The size of soil moisture can determine by the size of measuring soil water suction, because along with the reducing of soil moisture, soil water suction rise.The common instrument of measuring the soil water suction size at present is soil depressimeter (also claiming Soil Tension).One collection chamber is arranged in the soil depressimeter, and this collection chamber is used for assembling and is dissolved in the air that soil depressimeter water is separated out.Because along with the increase of soil water suction, the air of water the inside dissolving can constantly be separated out in the soil depressimeter, in order not influence the operate as normal of soil depressimeter, a collection chamber is set on the soil depressimeter usually, this collection chamber is used to assemble above-mentioned air of separating out.When soil was done, soil water suction was very big, almost will carry out degasification to collection chamber every day and add water, and this not only influences measurement, also very inconvenient.Because when collection chamber is carried out degasification and adds water, in a single day the stopper of collection chamber is opened, suction in the soil depressimeter just with the atmospheric pressure balance, cause near the soil water suction also approaching zero of vitrified-clay pipe in the soil depressimeter, add collection chamber is carried out tightening stopper again after degasification adds water, make near the soil moisture of vitrified-clay pipe saturated or normal pressure occur, this has just changed original water regime of soil, must be again through long equilibration time, the soil depressimeter just can demonstrate real soil water suction situation.Again because present soil depressimeter carries out degasification to collection chamber adds and normally tighten with rubber stopper behind the water, very tight because of being afraid of that gas leakage often gets the rubber stopper lemon in use, add a bigger malleation can for when it tightens rubber stopper really the soil depressimeter, and the general use of soil depressimeter is the vacuum meter indication, this will make (malleation direction) rotation round about of vacuum meter pointer, thereby pointer can not be got back to zero point, even damage vacuum meter.
A kind of hutch water device is abroad arranged, and it is to utilize a spring valve that hutch water device and soil depressimeter are separated, and will press a lower spring with hand when needing moisturizing, and valve is opened thereupon, and therefore degasification moisturizing then still has inconvenience in use.
The purpose of this utility model is to provide a kind of automatic water supplement formula soil depressimeter, this automatic water supplement formula soil depressimeter need not often collection chamber to be carried out artificial degasification and adds water, even when collection chamber being carried out artificial degasification adds water or collection chamber is carried out automatic water supplement, can not press meter to add malleation to soil yet, this has not only prolonged the serviceable life of vacuum meter, and shortened greatly and measured required equilibration time, this automatic water supplement formula soil depressimeter does not need the people to remove to press spring valve simultaneously, really play the purpose that moisturizing is carried out automatically, so alleviated the labour intensity of surveying work significantly.
Task of the present utility model realizes by following manner, a kind of automatic water supplement formula soil depressimeter, form by vitrified-clay pipe, communicating pipe, negative pressure indicator and collection chamber, its key is that the upper end of collection chamber disposes a hutch water device, this hutch water device is made of water storage cavity and connection neck, the central part that connects neck offers an aperture, and this aperture connects collection chamber and water storage cavity mutually, also is provided with Movable valve simultaneously on the aperture that connects collection chamber and water storage cavity.
Because the air in the collection chamber of lower end can upwards be discharged to water storage cavity by above-mentioned aperture, and the water in the water storage cavity of upper end also can flow into depressimeter downwards by this aperture, thereby has realized the purpose of degasification moisturizing.
In order to help carrying out automatically of moisturizing process, above-mentioned Movable valve preferably adopts the structure that one flat plate is set above the aperture that connects the neck central part to realize.That is to say that in fact above-mentioned Movable valve is exactly one flat plate, this flat board has constant weight that aperture is covered.
Certainly, above-mentioned Movable valve also can be a spheroid, if above-mentioned Movable valve adopts spheroid form, hydraucone should corresponding be offered in the aperture top that then connects the neck central part, to guarantee that spheroid can be pressed on this hydraucone well aperture is covered.
The automatic water supplement process of hutch water device is performed such, increase along with soil water suction, the air of water the inside dissolving can constantly be separated out in the soil depressimeter, above-mentioned air of separating out just is gathered in the collection chamber with the form of bubble, when the bubble that stores in the collection chamber reaches a certain amount of, owing to the swollen turgor pressure power of bubble is opened Movable valve, be that bubble backs down the Movable valve (being flat board or spheroid) that is placed on the aperture top that connects the neck central part, bubble impacts and moves up, hutch water device is to following collection chamber moisturizing simultaneously, carrying out along with the moisturizing process, pressure in bubbles reduces, the flat board (or spheroid) that is in the aperture top that connects the neck central part with little bore closure, also is that Movable valve covers aperture under the effect of self gravitation, and this has just finished the automatic water supplement process.
The size of above-mentioned aperture should help flowing of water, guarantees that again Movable valve can cover aperture fully, too little can hinder moving up and down of water, too big is afraid of gas leakage.For the diameter of vitrified-clay pipe or communicating pipe was soil depressimeter about 20mm, the diameter of its aperture can be controlled between 2～8mm just.
When the water in the water storage cavity owing to constantly replenishing when exhausting to collection chamber, in order easily water storage cavity to be added water, can offer a filler at the top of water storage cavity, simultaneously sealing-plug of configuration on this filler, the sealing plug can be a rubber stopper, also can be the spiral lid.
In order to make hutch water device be fixed on the upper end of collection chamber easily and quickly, and help both loading and unloading, the connection neck of the upper end of collection chamber and hutch water device is preferably made the screw thread mouth structure that cooperatively interacts, and so just hutch water device can be screwed in easily the upper end of collection chamber.
The connection neck of above-mentioned hutch water device also can be fixed on the upper end of collection chamber by the mode of glueing joint.Even both directly can be injection molded into one.
Below in conjunction with accompanying drawing shown in the embodiment the utility model is described in further detail.
Fig. 1 is the structural representation of automatic water supplement formula soil depressimeter;
Fig. 2 is the structural representation of hutch water device;
Fig. 3 is the structural representation of another form hutch water device.
With reference to Fig. 1, automatic water supplement formula soil depressimeter, form by vitrified-clay pipe 5, communicating pipe 4, negative pressure indicator 3 and collection chamber 2, the upper end of collection chamber 2 disposes a hutch water device 1, this hutch water device 1 is made of water storage cavity 6 and connection neck 7, the central part that connects neck 7 offers an aperture 8, and this aperture 8 connects collection chamber 2 and water storage cavity 6 mutually, also is provided with one flat plate 9 simultaneously on the aperture 8 that connects collection chamber 2 and water storage cavity 6.In fact above-mentioned dull and stereotyped 9 play a part Movable valve.The connection neck 7 of hutch water device 1 directly is fixed on the upper end of collection chamber 2 in the mode of glueing joint.As can be seen from Figure 1, the top of water storage cavity 6 also offers a filler 10, disposes a sealing-plug 11 on this filler 10 simultaneously.
In conjunction with Fig. 2, between sealing-plug 11 and dull and stereotyped 9 (being Movable valve), a tie 12 is arranged.As seen, when depressimeter need add water, can open Movable valve 9 by above-mentioned tie 12 after opening sealing-plug 11, water just can flow into depressimeter downwards through the aperture 8 that the central part that connects neck 7 is offered, and promptly pours into downwards among vitrified-clay pipe 5, communicating pipe 4 and the collection chamber 2.
With reference to Fig. 3, Movable valve 9 adopts spheroid form, and a hydraucone 13 is offered in aperture 8 tops that connect neck 7 central parts simultaneously.Made bell mouth shape owing to connect aperture 8 tops of neck 7 central parts, so the Movable valve 9 of spheroid form can be engaged on this hydraucone 13 well.
The concrete using method of this automatic water supplement formula soil depressimeter is:
At the connection neck of hutch water device is directly to be fixed in the mode of glueing joint under the situation of upper end of collection chamber, at first open the sealing-plug on the filler, water storage cavity top, mention Movable valve by tie, just can pour into water among vitrified-clay pipe, communicating pipe and the collection chamber this moment, until water storage cavity is all filled for extremely by water, put down Movable valve then, can use after tightening sealing-plug.
Making the screw thread mouth structure, the hutch water device that cooperatively interact at the connection neck of the upper end of collection chamber and hutch water device is to be fixed in the mode that spins under the situation of upper end of collection chamber, at first will fill water in vitrified-clay pipe, communicating pipe, collection chamber and the hutch water device, then hutch water device is upside down in the top of collection chamber, make the connection neck of hutch water device and collection chamber to lumping together, and be fixed into one by the screw thread that they cooperatively interact, guarantee that simultaneously both close-coupled are air tight.Be upside down in the connection neck of the hutch water device on collection chamber top, the aperture that its central part is offered is with the water storage cavity and the collection chamber UNICOM of hutch water device.
During use, in case hutch water device connects the certain negative pressure of following generation of neck, after giving birth to collection chamber generation bubble, the swelling pressure of bubble are just with the valve open in the hutch water device, bubble then enters in the water storage cavity of hutch water device simultaneously, water in the water storage cavity just flows into depressimeter, so just continuously moisturizing, after being full of by air in the water storage cavity of hutch water device, sealing-plug on the filler that only needs the water storage cavity top is offered is opened, can in water storage cavity, add water by this filler, after treating to fill water in the water storage cavity, with sealing-plug filler neck seal be got final product again.
The stopper that the utility model has been avoided frequently opening collection chamber effectively in measuring process carries out the operation of moisturizing, so bring great convenience to surveying work.Although hutch water device also can make the negative pressure in the vitrified-clay pipe change to some extent when collection chamber being carried out automatic water supplement at every turn, but because hutch water device and atmosphere are obstructed, it is still keeping negative pressure, soil water regime is not just had too big change, so the equilibration time of soil moisture is much shorter also, this has just demonstrated the superiority of hutch water device.
Because the upper end of collection chamber and the connection neck of hutch water device have been made the screw thread mouth structure that can cooperatively interact, so just hutch water device can be screwed in easily the upper end of collection chamber, so effectively avoided when collection chamber being carried out tighten stopper again after artificial degasification adds water, making near the vitrified-clay pipe soil moisture the phenomenon of saturated or normal pressure to occur, so also just be unlikely the vacuum meter pointer is rotated round about, thereby guaranteed the normal use of vacuum meter, also prolonged the serviceable life of vacuum meter.
Claims (8)
1, a kind of automatic water supplement formula soil depressimeter, form by vitrified-clay pipe, communicating pipe, negative pressure indicator and collection chamber, the upper end that it is characterized in that collection chamber disposes a hutch water device, this hutch water device is made of water storage cavity and connection neck, the central part that connects neck offers an aperture, this aperture connects collection chamber and water storage cavity mutually, also is provided with Movable valve simultaneously on the aperture that connects collection chamber and water storage cavity.
2,, it is characterized in that above-mentioned Movable valve is a flat board that is arranged on the aperture top that connects the neck central part according to the automatic water supplement formula soil depressimeter of claim 1 regulation.
3, according to the automatic water supplement formula soil depressimeter of claim 1 regulation, it is characterized in that above-mentioned Movable valve is a spheroid that is arranged on the aperture top that connects the neck central part, hydraucone is made in the aperture top that will connect the neck central part simultaneously.
4, according to the automatic water supplement formula soil depressimeter of claim 1,2 or 3 regulations, it is characterized in that the water storage cavity top of hutch water device offers a filler, on this filler, dispose a sealing-plug simultaneously.
5, according to the automatic water supplement formula soil depressimeter of claim 4 regulation, it is characterized in that being fixed with on the sealing-plug tie, the other end of this tie is fixed on the Movable valve.
6, according to the automatic water supplement formula soil depressimeters of claim 1,2 or 3 regulations, it is characterized in that the upper end of collection chamber and the connection neck of hutch water device make the screw thread mouth structure that cooperatively interacts.
7,, it is characterized in that the upper end of collection chamber and the connection neck of hutch water device make the screw thread mouth structure that cooperatively interacts according to the automatic water supplement formula soil depressimeter of claim 4 regulation.
8,, it is characterized in that the upper end of collection chamber and the connection neck of hutch water device make the screw thread mouth structure that cooperatively interacts according to the automatic water supplement formula soil depressimeter of claim 5 regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247887 CN2314364Y (en) | 1997-12-01 | 1997-12-01 | Negative pressure meter for soil with automatic water supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97247887 CN2314364Y (en) | 1997-12-01 | 1997-12-01 | Negative pressure meter for soil with automatic water supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2314364Y true CN2314364Y (en) | 1999-04-14 |
Family
ID=33955259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97247887 Expired - Fee Related CN2314364Y (en) | 1997-12-01 | 1997-12-01 | Negative pressure meter for soil with automatic water supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2314364Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104737883A (en) * | 2015-04-17 | 2015-07-01 | 湖南农业大学 | Movable negative pressure irrigating system and method for oil-tea camellia stand |
| CN103766198B (en) * | 2007-08-20 | 2016-06-15 | 内塔芬有限公司 | Irrigation control system |
| CN106959364A (en) * | 2017-03-29 | 2017-07-18 | 朱郎平 | A kind of soil water meauring instrument |
| CN115773965A (en) * | 2023-02-13 | 2023-03-10 | 山东长岛国家级自然保护区管理中心 | Wild plant field growth environment information acquisition device |
-
1997
- 1997-12-01 CN CN 97247887 patent/CN2314364Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103766198B (en) * | 2007-08-20 | 2016-06-15 | 内塔芬有限公司 | Irrigation control system |
| CN104737883A (en) * | 2015-04-17 | 2015-07-01 | 湖南农业大学 | Movable negative pressure irrigating system and method for oil-tea camellia stand |
| CN106959364A (en) * | 2017-03-29 | 2017-07-18 | 朱郎平 | A kind of soil water meauring instrument |
| CN106959364B (en) * | 2017-03-29 | 2019-08-27 | 绵阳云燕航空科技有限公司 | A kind of soil water meauring instrument |
| CN115773965A (en) * | 2023-02-13 | 2023-03-10 | 山东长岛国家级自然保护区管理中心 | Wild plant field growth environment information acquisition device |
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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 |