CN109030778A - The soil moisture monitor of direct-connected pressure vacuum gauge - Google Patents
The soil moisture monitor of direct-connected pressure vacuum gauge Download PDFInfo
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- CN109030778A CN109030778A CN201810804921.1A CN201810804921A CN109030778A CN 109030778 A CN109030778 A CN 109030778A CN 201810804921 A CN201810804921 A CN 201810804921A CN 109030778 A CN109030778 A CN 109030778A
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- vacuum gauge
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- soil moisture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
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Abstract
The present invention relates to a kind of soil moisture monitors of direct-connected pressure vacuum gauge, including pressure vacuum gauge, sealing device, plastic flexible pipe, collection chamber and pot clay end, the pressure vacuum gauge is connected by one end of sealing device and collection chamber, the other end of the collection chamber is connect with pot clay end, one end of the plastic flexible pipe is connect with pressure vacuum gauge air inlet, and the other end of the plastic flexible pipe is deep into the bottom of collection chamber.The direct-connected collection chamber of pressure vacuum gauge of the invention is suitable for reading, overlooks reading, and a longer plastic flexible pipe is installed in the sealing of pressure vacuum gauge air inlet can be inserted into depressimeter water pipe lower part, and structure is simple, small in size；And pressure vacuum gauge and collection chamber have the arm of force less than 5cm, pressure vacuum gauge is not easy air inlet dehydration, and failure rate is low, be suitble in agricultural production without strict training can for ordinary person.
Description
Technical field
The present invention relates to a kind of soil moisture monitors of direct-connected pressure vacuum gauge, belong to device for measuring soil moisture neck
Domain.
Background technique
China is large agricultural country, and the normal growth of crops is maintained to need a suitable soil moisture environment, but crop
The absolute content of the not instead of soil moisture content most sensitive to soil moisture, the soil water potential with energy state.Depressimeter
It is the instrument for measuring soil supply crop water ability, the ability of the soil conservation soil moisture of differing texture is different.Although containing
Water is identical, but supplies the water difference that crop absorbs, and depressimeter can detect the water supply capacity of differing texture soil well,
Structure is simple, easy to operate.
There are many forms for depressimeter used at present, mainly have any different on detecting instrument: (1) hydraulic gage formula, precision is high,
But there is 7~8 meters or more of difference in height, observation is inconvenient with installation；(2) mercury meter formula, precision are higher, seriously polluted；(3) pressure
Sensor type, precision is higher, and observation is convenient, can also teletransmission remote control observation, but need electricity consumption, expensive, maintenance is inconvenient.At present
Field using it is more be pressure vacuum gauge depressimeter, have structure simple, observe the advantages that facilitating.The most commonly used is Chui Lianshi, such as
Shown in Fig. 1, suction type tensiometer is made of components such as pot clay end, collection chamber, collection chamber, pressure vacuum gauges, vacuum pressure
Table is mounted on the collection chamber of depressimeter in 90 ° of angles, and advantage is the pressure vacuum gauge air inlet when depressimeter collection chamber is full of water
Mouth is easily flooded not, exhaust and convenient, when opening collection chamber suitable for reading plus water, is not easy air inlet, pressure vacuum gauge in pressure vacuum gauge
It is fixed on depressimeter, not easy removal, the disadvantage is that pressure vacuum gauge and depressimeter are there are torque, external force touching easily causes vacuum
Pressure gauge loosens gas leakage, collection chamber water shortage, the easy air inlet of pressure vacuum gauge.201583471 U of Authorization Notice No. CN, utility model
Title: Separated type soil negative pressure meter, it includes vitrified-clay pipe, transfer tube, rubber stopper and pressure vacuum gauge, in vitrified-clay pipe upper port
Coconnected transfer tube is a plastic conduit, plastic conduit upper end reserve tracheae from one laterally be externally connected with one to
Few two meters of long plastic flexible pipes, the other end of plastic flexible pipe are equipped with the vacuum pressure that a measurement range is 0-0.l megapascal (MPa)
Power table, pressure vacuum gauge are mounted on a bracket.This structure soil depressimeter observation data can outside trial zone into
Row, avoids to the interference of small climate around and to the damage of crop, and cost is greatly reduced, service life is greatly prolonged
It is long.But volume is big, and has hollow billet, makes troubles to field operation, easy to aging.
Summary of the invention
The present invention provides a kind of soil moisture monitors of direct-connected pressure vacuum gauge, solve existing depressimeter volume
Greatly, inconvenient；Touching interface easily loosens gas leakage, and pressure vacuum gauge easy air inlet is actually asked when collection chamber adds water to be vented
Topic.
In order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of soil moisture monitor of direct-connected pressure vacuum gauge, including pressure vacuum gauge, sealing device, plastic flexible pipe,
Collection chamber and pot clay end, the pressure vacuum gauge are connected by one end of sealing device and collection chamber, the collection chamber
The other end is connect with pot clay end, and one end of the plastic flexible pipe is connect with pressure vacuum gauge air inlet, the plastic flexible pipe
The other end be deep into pot clay end, apart from pot clay end bottom 1-2cm.Further, a preferred embodiment of the present invention: described
Pressure vacuum gauge be axial vacuum force table.
Further, a preferred embodiment of the present invention: the collection chamber is lucite pipe or lucite tube.
Further, a preferred embodiment of the present invention: the sealing device includes rubber sheet gasket and internal thread nipple,
The internal thread nipple includes threaded joints, rubber sheet gasket mounting portion and collection chamber interconnecting piece, the vacuum pressure
Table runs through rubber sheet gasket, the described rubber sheet gasket setting in rubber sheet gasket mounting portion, the mounting head of the pressure vacuum gauge with
Threaded joints connection, the collection chamber with collection chamber interconnecting piece fitting together with, and pass through sealant or sealant tape it is close
Envelope.
Further, a preferred embodiment of the present invention: the sealing device further includes plastics pipe connector and compound close
Gasket, the plastics pipe connector and plastic flexible pipe integrated molding, the plastics pipe connector and pressure vacuum gauge
Mounting head is threadedly coupled, and composite sealing pad is arranged between the plastics pipe connector and mounting head, and the collection chamber connects
Internal screw thread is provided in socket part, the top of the collection chamber is provided with external screw thread, the collection chamber interconnecting piece and collection chamber
It is connected by thread seal.
Further, a preferred embodiment of the present invention: the composite sealing pad includes silicone rubber gasket, stainless steel steel
Washer and nitrile rubber washer.
Beneficial effects of the present invention:
The present invention is to be used to measure soil by pressure vacuum gauge to supply crop water ability, accurately to detect not homogeneity
The water supply capacity of ground soil is truly reflected the ability that soil supply crop absorbs water；
The direct-connected collection chamber of pressure vacuum gauge is suitable for reading, considerably reduces because touching makes pressure vacuum gauge air inlet generate loosening
Gas leak phenomenon overcomes the shortcomings that external force touching easily loosens gas leakage；
A piece plastic flexible pipe is installed in the sealing of pressure vacuum gauge air inlet and is inserted into pot clay end water pipe lower part, is effectively prevented
Pressure vacuum gauge adds water to be vented due to water shortage air inlet because of collection chamber；
When pressure vacuum gauge shows negative pressure value, opening collection chamber is suitable for reading, and plastic flexible pipe has played buffer function well, will not
Because pressure difference is excessive, pressure vacuum gauge is damaged；
The direct-connected collection chamber of pressure vacuum gauge is suitable for reading, overlooks reading, and the sealing of pressure vacuum gauge air inlet installation one longer
Plastic flexible pipe can be inserted into depressimeter water pipe lower part, and structure is simple, small in size；And pressure vacuum gauge and collection chamber have less than 5cm's
The arm of force, pressure vacuum gauge are not easy air inlet dehydration, and failure rate is low, be suitble to agricultural production in without strict training can for it is common
Personnel.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of pressure vacuum gauge depressimeter in the prior art；
Fig. 2 is the structural schematic diagram of one embodiment of the present of invention；
Fig. 3 is the structural schematic diagram of another embodiment of the present invention；
Fig. 4 is the portion the A enlarged drawing of Fig. 3；
In figure, 1 is plastic flexible pipe, and 2 be pot clay end；3 be collection chamber, and 4 be collection chamber interconnecting piece, and 5 install for rubber sheet gasket
Portion, 6 be rubber sheet gasket, and 7 be threaded joints, and 8 be axial vacuum force table, and 9 be plastics pipe connector, and 10 be silicone rubber pad
Circle, 11 be stainless steel washer, and 12 be nitrile rubber washer.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, carries out to the technical solution in inventive embodiments clear, complete
Ground description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
Embodiment in invention, every other reality obtained by those of ordinary skill in the art without making creative efforts
Example is applied, shall fall within the protection scope of the present invention.
Embodiment 1
As shown in Fig. 2, a kind of soil moisture monitor of direct-connected pressure vacuum gauge, including pressure vacuum gauge, sealing device,
Plastic flexible pipe 1, collection chamber 3 and pot clay end 2, the pressure vacuum gauge are connect by sealing device with one end of collection chamber 3, institute
The other end for the collection chamber 3 stated is connect with pot clay end 2, and one end of the plastic flexible pipe 1 is connect with pressure vacuum gauge air inlet,
The other end of the plastic flexible pipe 1 is deep into pot clay end 2, apart from 2 bottom 1-2cm of pot clay end.Pressure vacuum gauge is axial
Pressure vacuum gauge 8.
Collection chamber 3 is lucite pipe or lucite tube, and the present embodiment uses lucite tube.
Sealing device includes rubber sheet gasket 6 and internal thread nipple, and the internal thread nipple includes threaded joints
7, rubber sheet gasket mounting portion 5 and collection chamber interconnecting piece 4, the pressure vacuum gauge run through rubber sheet gasket 6, the rubber sheet gasket
6 are arranged in rubber sheet gasket mounting portion 5, and the mounting head of the pressure vacuum gauge is connect with threaded joints 7, the collection chamber
3 together with 4 fitting of collection chamber interconnecting piece, and is sealed by sealant or sealant tape.
The application method of the soil moisture monitor of the direct-connected pressure vacuum gauge of the present embodiment: first assembly equipment, such as Fig. 2 institute
Show, preprepared normal-temperature distilled water is poured into the intracavitary of lucite tube, and fill, the vacuum that plastic flexible pipe 1 is housed
Pressure gauge preexhaust simultaneously screws in sealing, and according to the axial root system layer depth of crop, pot clay end 2, lucite tube are vertically buried
Enter soil, and guarantees its pot clay end 2 in the soil depth of quasi- test.When the air inlet of depressimeter collection chamber is more, need moisturizing when,
Only need to dismantle pressure vacuum gauge, do not allowed when moving pressure vacuum gauge plastic flexible pipe 1 be detached from organic glass gas collecting tube the water surface, and to
Depressimeter collection chamber topped up with water screws in again, i.e., repeatable normal use.
Embodiment 2
As shown in Figures 3 and 4, a kind of soil moisture monitor of direct-connected pressure vacuum gauge, including pressure vacuum gauge, sealing dress
It sets, plastic flexible pipe 1, collection chamber 3 and pot clay end 2, the pressure vacuum gauge are connected by one end of sealing device and collection chamber 3
It connects, the other end of the collection chamber 3 is connect with pot clay end 2, one end of the plastic flexible pipe 1 and pressure vacuum gauge air inlet
Connection, the other end of the plastic flexible pipe 1 is deep into pot clay end 2, apart from 2 bottom 1-2cm of pot clay end.Pressure vacuum gauge is
Axial vacuum force table 8.
Collection chamber 3 is lucite pipe or lucite tube, and the present embodiment uses lucite tube.
Sealing device includes rubber sheet gasket 6 and internal thread nipple, and the internal thread nipple includes threaded joints
7, rubber sheet gasket mounting portion 5 and collection chamber interconnecting piece 4, the pressure vacuum gauge run through rubber sheet gasket 6, the rubber sheet gasket
6 are arranged in rubber sheet gasket mounting portion 5, and the mounting head of the pressure vacuum gauge is connect with threaded joints 7, the collection chamber
3 together with 4 fitting of collection chamber interconnecting piece, and is sealed by sealant or sealant tape.
The sealing device further includes plastics pipe connector 9 and composite sealing pad, the plastics pipe connector 9 with
Plastic flexible pipe 1 is integrally formed, and the plastics pipe connector 9 is threadedly coupled with the mounting head of pressure vacuum gauge, the plastics
Composite sealing pad is set between pipe connector 9 and mounting head, is provided with internal screw thread on the collection chamber interconnecting piece 4, it is described
The top of collection chamber be provided with external screw thread, the collection chamber interconnecting piece 4 is connected with collection chamber by thread seal.
Composite sealing pad includes silicone rubber gasket 10, stainless steel washer 11 and nitrile rubber washer 12.
Collection chamber 3 seals together with 4 fitting of collection chamber interconnecting piece, and through sealant or sealant tape in embodiment 1.
This mode seals dismounting inconvenience, is unfavorable for exhaust and changes water.And air inlet in pressure vacuum gauge is covered between plastic flexible pipe 1
On, insecure, easy gas leakage falls off.
Collection chamber can be connected through a screw thread compression rubber with collection chamber interconnecting piece 4 using being threadedly coupled in the present embodiment
Gasket 6 plays sealing function, and is threadedly coupled convenient for disassembly and assembly.
Plastics pipe connector 9 is arranged in plastic flexible pipe 1 in this implementation, and plastic connector passes through the peace of screw thread and pressure vacuum gauge
Head thread connection is filled, fixing-stable is not easily to fall off, is convenient for changing.And it is arranged between plastics pipe connector 9 and mounting head
Composite sealing pad, composite sealing pad include silicone rubber gasket 10, intermediate stainless steel steel washer and nitrile rubber washer.
Silicone rubber gasket 10 has high and low temperature resistance outstanding, keeps good within the temperature range of -70 DEG C~+260 DEG C
Good uses elasticity, resistance to ozone, Weather-resistant, while having waterproof, fire-retardant, high temperature resistant, conduction, wear-resisting, oil resistant etc. excellent
Performance；Nitrile rubber washer has good wearability, resistance to ag(e)ing and air-tightness；Stainless steel steel washer has precision height,
Pulling force degree is strong, and finish is good, flexible, the characteristics of being not easily broken.Using above-mentioned composite seal washer, make full use of respective excellent
Point, so that sealing effect of the invention is good, by the use into thousand times, no gas leak phenomenon occurs.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of soil moisture monitor of direct-connected pressure vacuum gauge, it is characterised in that: including pressure vacuum gauge, sealing device,
Plastic flexible pipe, collection chamber and pot clay end, the pressure vacuum gauge is connected by one end of sealing device and collection chamber, described
The other end of collection chamber is connect with pot clay end, and one end of the plastic flexible pipe is connect with pressure vacuum gauge air inlet, described
The other end of plastic flexible pipe is deep into pot clay end, apart from pot clay end bottom 1-2cm.
2. a kind of soil moisture monitor of direct-connected pressure vacuum gauge according to claim 1, it is characterised in that: described
Pressure vacuum gauge is axial vacuum force table.
3. a kind of soil moisture monitor of direct-connected pressure vacuum gauge according to claim 1, it is characterised in that: described
Collection chamber is lucite pipe or lucite tube.
4. a kind of soil moisture monitor of direct-connected pressure vacuum gauge according to claim 1-3, feature exist
In: the sealing device include rubber sheet gasket and internal thread nipple, the internal thread nipple include threaded joints,
Rubber sheet gasket mounting portion and collection chamber interconnecting piece, the pressure vacuum gauge run through rubber sheet gasket, the rubber sheet gasket setting
It is connect in the mounting head of rubber sheet gasket mounting portion, the pressure vacuum gauge with threaded joints, the collection chamber and gas collection
Room interconnecting piece fitting together, and is sealed by sealant or sealant tape.
5. a kind of soil moisture monitor of direct-connected pressure vacuum gauge according to claim 4, it is characterised in that: described
Sealing device further includes plastics pipe connector and composite sealing pad, the plastics pipe connector and plastic flexible pipe one at
Type, the plastics pipe connector are threadedly coupled with the mounting head of pressure vacuum gauge, the plastics pipe connector and mounting head
Between composite sealing pad is set, be provided with internal screw thread on the collection chamber interconnecting piece, the top setting of the collection chamber
There is external screw thread, the collection chamber interconnecting piece is connected with collection chamber by thread seal.
6. a kind of soil moisture monitor of direct-connected pressure vacuum gauge according to claim 5, it is characterised in that: described
Composite sealing pad includes silicone rubber gasket, intermediate stainless steel steel washer and nitrile rubber washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810804921.1A CN109030778B (en) | 2018-07-20 | 2018-07-20 | Soil moisture monitor directly connected with vacuum pressure gauge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810804921.1A CN109030778B (en) | 2018-07-20 | 2018-07-20 | Soil moisture monitor directly connected with vacuum pressure gauge |
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| CN109030778A true CN109030778A (en) | 2018-12-18 |
| CN109030778B CN109030778B (en) | 2023-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810804921.1A Active CN109030778B (en) | 2018-07-20 | 2018-07-20 | Soil moisture monitor directly connected with vacuum pressure gauge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118169365A (en) * | 2024-05-14 | 2024-06-11 | 中国农业科学院农田灌溉研究所 | Soil tensiometer capable of automatically exhausting and supplementing water |
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| CN107219346A (en) * | 2017-06-21 | 2017-09-29 | 中国科学院南京土壤研究所 | New soil tensometer and soil water potential measuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118169365A (en) * | 2024-05-14 | 2024-06-11 | 中国农业科学院农田灌溉研究所 | Soil tensiometer capable of automatically exhausting and supplementing water |
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| Publication number | Publication date |
|---|---|
| CN109030778B (en) | 2023-10-20 |
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