CN109297782B - Soil sample humidifying and dehumidifying device - Google Patents
Soil sample humidifying and dehumidifying device Download PDFInfo
- Publication number
- CN109297782B CN109297782B CN201811283932.6A CN201811283932A CN109297782B CN 109297782 B CN109297782 B CN 109297782B CN 201811283932 A CN201811283932 A CN 201811283932A CN 109297782 B CN109297782 B CN 109297782B
- Authority
- CN
- China
- Prior art keywords
- chamber
- humidifying
- soil sample
- vacuum chamber
- humidification
- 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.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a soil sample humidifying and dehumidifying device which comprises a top plate and a bottom plate which are parallel to each other and are arranged up and down, wherein the top plate and the bottom plate are connected through a plurality of stand columns, the lower part of the top plate is connected with a humidifying chamber through a transmission device, the humidifying chamber is connected with a liquid storage box through a first pipeline, the first pipeline is also sequentially and horizontally connected with a liquid gasification atomizing device and an air supply device, the liquid gasification atomizing device and the air supply device are respectively and electrically connected with a gasification humidifying controller, a vacuum chamber is arranged on the bottom plate, the vacuum chamber is connected with an air-water dual-purpose vacuum pump through a second pipeline, the air-water dual-purpose vacuum pump is electrically connected with a pressure reduction. When the device is used for increasing and reducing the humidity of the soil sample, the pressure difference and the atomized gasified water are utilized to quickly and uniformly increase and reduce the humidity of the soil sample, and the increase and the reduction of the humidity of the soil sample in batches can be carried out according to the number of the holes on the manufactured sealing circular plate.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering equipment, and particularly relates to a soil sample humidifying and dehumidifying device.
Background
In an indoor geotechnical experiment, when an undisturbed soil sample (undisturbed soil sample) is cut or a remolded soil sample (disturbed soil sample) is prepared, the water content of the undisturbed soil sample or the remolded soil sample is changed, and the obtaining of the soil sample with ideal water content is an important part in the geotechnical experiment.
After the original or remolded soil sample is prepared, the water content of the soil sample needs to be changed, the traditional humidification method comprises a prewetting method and a burying method, the prewetting method has the advantages of short humidification time, easy control of humidification degree, good humidification effect, no batch humidification, single and separate treatment and large workload. The burying method can humidify in batches, but the humidifying time is too long, and the humidifying uniformity is poor; in the dehumidification method, a ventilation drying method is generally adopted for undisturbed soil samples, a drying method can also be adopted for remolded soil samples, however, the drying working time of the existing geotechnical test drying oven is set by human experience, the operation of the drying oven is overtime usually, unnecessary resource waste is caused, the ventilation drying method is required to be manually attended during dehumidification, the change state of the water content is repeatedly measured, and the efficiency is low. The existing method and device for changing the water content of the soil sample are difficult to obviously improve the precision and efficiency of batch humidification or dehumidification in the soil test.
Disclosure of Invention
The invention aims to provide a soil sample humidifying and dehumidifying device, which solves the problem that the water content of a soil sample cannot be rapidly changed in batches in the existing soil test.
The technical scheme includes that the soil sample humidifying and dehumidifying device comprises a top plate and a bottom plate which are parallel to each other and are arranged up and down, the top plate and the bottom plate are connected through a plurality of stand columns, the lower portion of the top plate is connected with a humidifying chamber through a transmission device, the humidifying chamber is connected with a liquid storage box through a first pipeline, a vacuum chamber is arranged on the bottom plate and is connected with an air-water dual-purpose vacuum pump through a second pipeline, the air-water dual-purpose vacuum pump is electrically connected with a decompression controller, the vacuum chamber is connected with the humidifying chamber through a sealing circular plate, the sealing circular plate comprises a circular plate body, a plurality of cylindrical through holes are formed in the circular plate body, a circular cutter buckle is embedded in each cylindrical through hole and comprises a hollow cylindrical barrel, one end face, close to the vacuum chamber, of the cylindrical barrel is a grid face, the other end.
The present invention is also characterized in that,
still be connected with liquid gasification atomizing device and air supply arrangement in proper order on the first pipeline, liquid gasification atomizing device and air supply arrangement are equallyd divide respectively with gasification humidification controller electric connection.
Be provided with the humidifier monitored control system on the humidifier chamber outer wall, humidifier monitored control system includes HR10 air humidity sensor a and LCD display screen a, HR10 air humidity sensor a and LCD display screen a electric connection, LCD display screen a and gasification humidification controller electric connection.
Be provided with vacuum chamber monitored control system on the vacuum chamber outer wall, vacuum chamber monitored control system includes SNS intelligence digital display manometer, LCD display screen b and HR10 air humidity sensor b, SNS intelligence digital display manometer and decompression controller electric connection, HR10 air humidity sensor b and LCD display screen b electric connection, every quality sensor respectively with LCD display screen b electric connection.
The humidifying chamber is a first cylindrical hollow box body, and one end of the first box body, which is close to the vacuum chamber, is opened.
The vacuum chamber is a second cylindrical box body with a hollow interior, and one end of the second box body close to the humidifying chamber is opened.
The outer edge of the upper part of the humidifying chamber is sleeved on the upright post through a plurality of U-shaped fixing blocks.
The upright posts are connected with the top plate and the bottom plate through threads, and the number of the upright posts is at least three.
The transmission device is a scissor jack, an upper support rod of the scissor jack is connected with the top plate, and a lower support rod of the scissor jack is connected with the humidifying chamber.
The beneficial effect of the invention is that,
when the device humidifies the soil sample, the device quickly and uniformly humidifies the soil sample by utilizing pressure difference and atomized gasified water, and the device can humidify the soil sample in batches according to the number of holes on the manufactured sealing circular plate. The monitoring system of the humidifying chamber can set that the liquid gasification atomizing device starts to work when the humidity of the humidifying chamber is lower than a certain threshold value, and the liquid gasification atomizing device stops working when the humidity of the humidifying chamber is higher than the certain threshold value; the pressure in the vacuum chamber can also be kept within a certain range by the vacuum chamber monitoring system. Under the condition of fixed air pressure difference and fixed humidity, the water content of the soil sample can be relatively accurately increased through calibration. During dehumidification, the water content of the soil sample is rapidly reduced by uniformly heating the heating sheet and using the air pressure difference. Because the monitoring system is used, the labor force value is not needed, the problem that the water content of the soil sample cannot be rapidly changed in batches in the existing soil test is solved, the labor force is saved, and the working efficiency is obviously improved.
Drawings
FIG. 1 is a schematic structural diagram of a soil sample humidifying and dehumidifying device of the present invention;
FIG. 2 is a schematic structural diagram of a sealing circular plate in the soil sample humidifying and dehumidifying device of the present invention.
In the figure, 1, a liquid storage tank, 2, a first control valve, 3, a first pipeline, 4, a liquid gasification and atomization device, 5, an air supply device, 6, an air-water dual-purpose vacuum pump, 7, a second pipeline, 8, a second control valve, 9, a humidifying chamber, 10, an air release valve, 11, an air inlet hole, 12, a pressure reduction controller, 13, a vacuum chamber, 14, an air extraction hole, 15, a gasification and humidification controller, 16, a sealing and humidifying circular plate, 17, a cutting ring fastener, 18, a cylindrical through hole, 19, a stand column, 20, a top plate, 21, a bottom plate, 22, a transmission device, 23, a vacuum chamber monitoring system and 24, a chamber monitoring system are arranged.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a soil sample humidifying and dehumidifying device, which comprises a top plate 20 and a bottom plate 21 which are parallel to each other and are arranged up and down, wherein the top plate 20 and the bottom plate 21 are connected through a plurality of upright posts 19, the lower part of the top plate 20 is connected with a humidifying chamber 9 through a transmission device 22, the outer edge of the upper part of the humidifying chamber 9 is sleeved on the upright posts 19 through a plurality of U-shaped fixing blocks, through holes are arranged at corresponding positions of the U-shaped fixing blocks, a humidifying chamber monitoring system 24 is arranged on the outer wall of the humidifying chamber 9, the humidifying chamber 9 is connected with a liquid storage tank 1 through a first pipeline 3, the first pipeline 3 is also sequentially and horizontally connected with a liquid vaporizing and atomizing device 4 and an air supply device 5, the liquid vaporizing and atomizing device 4 and the air supply device 5 are respectively and electrically connected with a vaporizing and humidifying controller 15, and the first pipeline 3;
the transmission device 22 is a scissor jack, an upper support rod of the scissor jack is connected with the top plate 20, and a lower support rod of the scissor jack is connected with the humidifying chamber 9;
the liquid gasification atomization device 4 is an ultrasonic humidifier or a six-head industrial ultrasonic atomizer; the air supply device 5 is a blower; the air-water dual-purpose vacuum pump 6 is a Danhao OL550A type vacuum pump; the gasification humidification controller 15 can be an intelligent three-speed controller of a fresh air system or an AM2301 humidity controller of a PLC industrial control board;
the humidification chamber monitoring system 24 comprises an HR10 air humidity sensor a and an LCD display screen a, wherein the HR10 air humidity sensor a is electrically connected with the LCD display screen a, the LCD display screen a is electrically connected with the gasification humidification controller 15, the LCD display screen a can display the humidity in the humidification chamber 9 in real time, and the HR10 air humidity sensor a measures the humidity in the humidification chamber 9 and transmits signals to the LCD display screen a and the gasification humidification controller 15;
a vacuum chamber 13 is arranged on the bottom plate 21, a vacuum chamber monitoring system 23 is arranged on the outer wall of the vacuum chamber 13, the vacuum chamber 13 is connected with a gas-water dual-purpose vacuum pump 6 through a second pipeline 7, the gas-water dual-purpose vacuum pump 6 is electrically connected with a pressure reduction controller 12, and a second control valve 8 is arranged on the second pipeline 7 and used for controlling the opening and closing of the second pipeline 7;
the vacuum chamber monitoring system 23 comprises an SNS intelligent digital display pressure instrument, an LCD display screen b and an HR10 air humidity sensor b, wherein the SNS intelligent digital display pressure instrument is electrically connected with the decompression controller 12, the HR10 air humidity sensor b is electrically connected with the LCD display screen b, the LCD display screen b is electrically connected with the gasification humidification controller 15, the LCD display screen b can display the humidity in the vacuum chamber 13 in real time, and the HR10 air humidity sensor b measures the humidity in the vacuum chamber 13 and transmits signals to the LCD display screen b and the gasification humidification controller 15;
the SNS intelligent digital display pressure instrument can display the air pressure of the vacuum chamber 13 in real time and can set an output instruction;
the pressure reduction controller 12 is a PLC FX 2N;
the vacuum chamber 13 is connected with the humidifying chamber 9 through a sealing circular plate 16; a sealing circular plate 16, as shown in fig. 2, including a circular plate body, the circular plate body is provided with a plurality of cylindrical through holes 18, the cylindrical through holes 18 are embedded with a cutting ring fastener 17, the cutting ring fastener 17 includes a hollow cylindrical barrel, one end surface of the cylindrical barrel close to the vacuum chamber 13 is a grid surface, the other end surface of the cylindrical barrel is open, the grid surface of the cylindrical barrel is uniformly distributed with a plurality of mass sensors, each mass sensor is respectively and electrically connected with an LCD display screen b, the LCD display screen b can display the soil sample quality in real time, the outer side of the cylindrical barrel is provided with threads and a sealing ring, the cutting ring fastener 17 is connected with the cylindrical through holes through the threads, so as to realize the sealing combination of the cutting ring fastener 17;
the upper surface and the lower surface of the sealing circular plate 16 are provided with sealing rings to ensure that the sealing circular plate is tightly combined with the vacuum chamber 13 and the humidifying chamber 9;
an air suction hole 14 is arranged at a corresponding position on one side of the vacuum chamber 13;
an air inlet 11 is arranged at a corresponding position on one side of the humidifying chamber 9, and an air release valve 10 is also arranged on the humidifying chamber 9;
the inner edge of the bottom plate 21 is provided with a screw hole, the outer edge of the top plate 20 is provided with a threaded sleeve, the upright posts 19 are connected with the top plate 20 and the bottom plate 21 through threads, the top plate 20, the bottom plate 21 and the upright posts 19 are all made of stainless steel materials, and at least three upright posts 19 are arranged;
specifically, the humidifying chamber 9 is a first cylindrical hollow box body made of stainless steel material, one end of the first box body close to the vacuum chamber 13 is open, and the first box body is fixedly assembled with the sealing circular plate 16 and the vacuum chamber 13 through screws;
specifically, the vacuum chamber 13 is a second cylindrical hollow box body, one end of which near the humidification chamber 9 is open, and the second cylindrical hollow box body is fixedly assembled with the sealing circular plate 16 and the humidification chamber 9 through screws.
The invention relates to a device for controlling the increase and decrease of the water content of a soil sample, which has the specific working principle that:
A) humidifying, firstly, placing a required humidifying soil sample in a cutting ring, then placing the required humidifying soil sample in a cutting ring buckle 17, installing the cutting ring buckle on a sealing circular plate 16, attaching and sealing the vacuum chamber 13, the humidifying chamber 9 and the sealing circular plate 16 through a transmission device 22, and screwing and fixing the vacuum chamber, the humidifying chamber 9 and the sealing circular plate 16 through screws. Starting the liquid gasification atomizing device 4 and the air-water dual-purpose vacuum pump 6, setting a proper humidity in the humidifying chamber 9, setting a proper air pressure in the vacuum chamber 13, keeping the air pressure and the humidity within a certain threshold value through the humidifying chamber monitoring system 24 and the vacuum chamber monitoring system 23, keeping the vacuum chamber 13 at a certain negative pressure (pressure less than atmospheric pressure), and keeping the humidifying chamber 9 at a certain humidity; under the action of pressure difference, high-humidity gas in the humidifying chamber 9 directionally passes through the soil sample body and enters the vacuum chamber 13, and a large amount of gasified atomized water in the gas is retained in the soil sample in the process; because the water in the gas exists in an atomization and gasification mode, the soil sample is humidified, so that the humidification degree of the soil sample is more uniform and quicker, and the water content of the soil sample at the moment can be calculated according to the initial mass and the water content of the soil sample and the mass of the soil sample displayed by the LCD display screen b in real time;
B) dehumidifying, firstly, placing a soil sample to be humidified in a cutting ring, installing a heating sheet above the soil sample, setting the temperature of the heating sheet, then placing the soil sample in a cutting ring buckle 17 and installing the soil sample on a sealing circular plate 16, lifting a humidifying chamber 9 through a transmission device 22, only attaching and sealing the sealing circular plate 16 and a vacuum chamber 13, screwing and fixing the sealing circular plate and the vacuum chamber by screws, setting the air pressure of the vacuum chamber 13, keeping the air pressure of the vacuum chamber within a certain threshold value through a vacuum chamber monitoring system 23, heating and evaporating water in the soil sample under the action of heating of the heating sheet and pressure difference, and carrying the water out of the soil sample by air flow formed by the pressure difference, so that the water content in the soil sample is remarkably reduced, and then calculating the water content of the soil sample at the moment according to the initial mass, the water content of the soil sample and the soil sample mass displayed by an LCD display b.
The heating sheet can be composed of a resistance wire and an asbestos net, and the resistance wire is wrapped by the asbestos net to achieve the purpose of uniform heating.
When the device humidifies the soil sample, the device utilizes the pressure difference and the atomized gasified water to humidify the soil sample quickly and uniformly, and the humidifying of the soil sample in batches can be carried out according to the number of holes on the manufactured sealing circular plate 16. The humidification chamber monitoring system 24 can be set to start the liquid vaporization and atomization device 4 when the humidity of the humidification chamber 9 is lower than a certain threshold value, and stop the liquid vaporization and atomization device 4 when the humidity is higher than the certain threshold value; the pressure of the vacuum chamber 13 can also be kept within a certain range by means of the vacuum chamber monitoring system 23. Under the condition of fixed air pressure difference and fixed humidity, the water content of the soil sample can be relatively accurately increased through calibration. During dehumidification, the water content of the soil sample is rapidly reduced by uniformly heating the heating sheet and using the air pressure difference. Because the monitoring system is used, the labor force value is not needed, the problem that the water content of the soil sample cannot be rapidly changed in batches in the existing soil test is solved, the labor force is saved, and the working efficiency is obviously improved.
Claims (6)
1. The utility model provides a soil sample humidification dehydrating unit, its characterized in that, including roof (20) and bottom plate (21) that are parallel to each other and be setting up from top to bottom, roof (20) and bottom plate (21) are connected through a plurality of stand (19), roof (20) lower part is connected with humidification chamber (9) through transmission (22), humidification chamber (9) are connected with liquid storage case (1) through first pipeline (3), be provided with vacuum chamber (13) on bottom plate (21), vacuum chamber (13) are connected with dual-purpose vacuum pump of air water (6) through second pipeline (7), dual-purpose vacuum pump of air water (6) and decompression controller (12) electric connection, vacuum chamber (13) are connected through sealed plectane (16) with humidification chamber (9), sealed plectane (16) include the plectane body, be provided with a plurality of cylindrical through-holes (18) on the plectane body, a cutting ring buckle (17) is embedded in each cylindrical through hole (18), each cutting ring buckle (17) comprises a hollow cylindrical barrel, one end face, close to the vacuum chamber (13), of each cylindrical barrel is a grid face, the other end face of each cylindrical barrel is provided with an opening, and a plurality of mass sensors are uniformly distributed on the grid face of each cylindrical barrel;
the first pipeline (3) is also sequentially connected with a liquid gasification and atomization device (4) and an air supply device (5), and the liquid gasification and atomization device (4) and the air supply device (5) are respectively and electrically connected with a gasification and humidification controller (15); a humidification chamber monitoring system (24) is arranged on the outer wall of the humidification chamber (9), the humidification chamber monitoring system (24) comprises an HR10 air humidity sensor a and an LCD display screen a, the HR10 air humidity sensor a is electrically connected with the LCD display screen a, and the LCD display screen a is electrically connected with the gasification humidification controller (15); be provided with vacuum chamber monitored control system (23) on vacuum chamber (13) outer wall, vacuum chamber monitored control system (23) include SNS intelligence digital display manometer, LCD display screen b and HR10 air humidity sensor b, SNS intelligence digital display manometer and decompression controller (12) electric connection, HR10 air humidity sensor b and LCD display screen b electric connection, LCD display screen b and quality sensor electric connection.
2. A soil sample humidifying and dehumidifying device as claimed in claim 1, wherein the humidifying chamber (9) is a first cylindrical tank with a hollow interior, and one end of the first tank near the vacuum chamber (13) is open.
3. A soil sample humidifying and dehumidifying device as claimed in claim 1, wherein the vacuum chamber (13) is a second cylindrical tank with a hollow inside, and one end of the second tank near the humidifying chamber (9) is opened.
4. The soil sample humidifying and dehumidifying device as claimed in claim 1, wherein the outer edge of the upper part of the humidifying chamber (9) is sleeved on the upright post (19) through a plurality of U-shaped fixing blocks.
5. The soil sample humidifying and dehumidifying device as claimed in claim 1, wherein the upright columns (19) are connected with the top plate (20) and the bottom plate (21) through threads, and at least three upright columns (19) are arranged.
6. The soil sample humidifying and dehumidifying device of claim 1, wherein the transmission device (22) is a scissor jack, an upper rod of the scissor jack is connected with the top plate (20), and a lower rod of the scissor jack is connected with the humidifying chamber (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811283932.6A CN109297782B (en) | 2018-10-31 | 2018-10-31 | Soil sample humidifying and dehumidifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811283932.6A CN109297782B (en) | 2018-10-31 | 2018-10-31 | Soil sample humidifying and dehumidifying device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109297782A CN109297782A (en) | 2019-02-01 |
| CN109297782B true CN109297782B (en) | 2021-01-26 |
Family
ID=65145169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811283932.6A Active CN109297782B (en) | 2018-10-31 | 2018-10-31 | Soil sample humidifying and dehumidifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109297782B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111519601B (en) * | 2020-05-18 | 2021-06-08 | 兰州交通大学 | Method for humidifying soil body by using water vapor |
| CN113941266A (en) * | 2020-12-22 | 2022-01-18 | 中山大学 | Small-size integrated device of appointed moisture content of preparation and soil additive content soil sample |
| CN113624941A (en) * | 2021-08-09 | 2021-11-09 | 兰州交通大学 | Device and method for increasing moisture of soil body by vacuum pump suction combined steam |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089802A (en) * | 2014-06-26 | 2014-10-08 | 河海大学 | Device and method for preparing true triaxial remolded sample by utilizing vacuum preloading |
| CN104792597A (en) * | 2015-04-28 | 2015-07-22 | 中国矿业大学(北京) | Device and method for preparing coal samples with different water contents |
| CA2967855A1 (en) * | 2014-11-19 | 2016-05-26 | Deep Exploration Technologies Crc Limited | Drying apparatus and related method |
| CN205301034U (en) * | 2015-12-29 | 2016-06-08 | 河海大学 | Prepare device of different water saturation samples |
| CN207366310U (en) * | 2017-11-11 | 2018-05-15 | 四川大学 | A kind of device that different water cut rock sample is accurately prepared using ultrasonic wave |
| CN207408192U (en) * | 2017-10-31 | 2018-05-25 | 三峡大学 | A kind of sample preparation device of unsaturation remoulded clay |
| CN207516123U (en) * | 2017-12-06 | 2018-06-19 | 四川大学 | A kind of device that can accurately prepare different water cut rock sample on a large scale |
| CN108398306A (en) * | 2018-05-11 | 2018-08-14 | 榆林学院 | A kind of saturation preparation of soil sample experimental rig and its method for making sample |
| CN207741992U (en) * | 2017-12-15 | 2018-08-17 | 河海大学 | A kind of novel saturated soil device for formulating |
| CN108680409A (en) * | 2018-05-15 | 2018-10-19 | 青岛理工大学 | Sample preparation device applied to fine grained soil to control compaction degree |
-
2018
- 2018-10-31 CN CN201811283932.6A patent/CN109297782B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089802A (en) * | 2014-06-26 | 2014-10-08 | 河海大学 | Device and method for preparing true triaxial remolded sample by utilizing vacuum preloading |
| CA2967855A1 (en) * | 2014-11-19 | 2016-05-26 | Deep Exploration Technologies Crc Limited | Drying apparatus and related method |
| CN104792597A (en) * | 2015-04-28 | 2015-07-22 | 中国矿业大学(北京) | Device and method for preparing coal samples with different water contents |
| CN205301034U (en) * | 2015-12-29 | 2016-06-08 | 河海大学 | Prepare device of different water saturation samples |
| CN207408192U (en) * | 2017-10-31 | 2018-05-25 | 三峡大学 | A kind of sample preparation device of unsaturation remoulded clay |
| CN207366310U (en) * | 2017-11-11 | 2018-05-15 | 四川大学 | A kind of device that different water cut rock sample is accurately prepared using ultrasonic wave |
| CN207516123U (en) * | 2017-12-06 | 2018-06-19 | 四川大学 | A kind of device that can accurately prepare different water cut rock sample on a large scale |
| CN207741992U (en) * | 2017-12-15 | 2018-08-17 | 河海大学 | A kind of novel saturated soil device for formulating |
| CN108398306A (en) * | 2018-05-11 | 2018-08-14 | 榆林学院 | A kind of saturation preparation of soil sample experimental rig and its method for making sample |
| CN108680409A (en) * | 2018-05-15 | 2018-10-19 | 青岛理工大学 | Sample preparation device applied to fine grained soil to control compaction degree |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109297782A (en) | 2019-02-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109297782B (en) | Soil sample humidifying and dehumidifying device | |
| CN200990028Y (en) | Temperature and humidity observing and controlling system for tea preparation | |
| CN110261579B (en) | Automatic control rock soil dry-wet circulation test method and device | |
| CN206808240U (en) | A kind of intelligent Greenhouse | |
| WO2018039960A1 (en) | Smart monitoring system for fruits and vegetables on basis of internet of things | |
| CN201935300U (en) | Oxygen generation humidifier of air conditioning unit | |
| CN204831988U (en) | Novel salt fog corrosion test case | |
| CN204374750U (en) | A kind of environmental control system of edible fungi factory | |
| CN109006412A (en) | A kind of chamber crop irrigation decision prior-warning device and method | |
| CN201382500Y (en) | Wireless networking constant humidity machine for display cabinet | |
| CN207366310U (en) | A kind of device that different water cut rock sample is accurately prepared using ultrasonic wave | |
| CN207948630U (en) | A kind of black soldier flies cultivation heating system | |
| CN205133622U (en) | Microorganism culturing box | |
| CN116358958A (en) | A quick soil drying system for soil detection | |
| CN206498738U (en) | One plant growth climate box | |
| CN214482568U (en) | Domestic fungus mushroom room empty gas detection surveys early warning device | |
| CN105432341B (en) | A kind of carbon dioxide fertilization device and method based on biomass | |
| CN215074262U (en) | Automatic vegetation case of moisturizing humidification | |
| CN205299815U (en) | Intelligent humidifier | |
| CN208480549U (en) | Green brick tea installation for fermenting | |
| CN207780622U (en) | Chamber saturated vapor humidifies control system | |
| CN209978264U (en) | Diaphragm type humidifier | |
| CN208588612U (en) | A kind of consideration has the ring of load drying and watering cycle to cut device | |
| CN203820794U (en) | Plant cell fermentation tank | |
| CN219434627U (en) | Split type air current membrane compost test device convenient to membrane performance analysis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |