CN112964529A - Device for pretreating volatile soil sample - Google Patents
Device for pretreating volatile soil sample Download PDFInfo
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- CN112964529A CN112964529A CN202110203102.3A CN202110203102A CN112964529A CN 112964529 A CN112964529 A CN 112964529A CN 202110203102 A CN202110203102 A CN 202110203102A CN 112964529 A CN112964529 A CN 112964529A
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- pretreating
- temperature
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- box
- sealing box
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- 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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/28—Frames, Housings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/30—Means for preventing contamination by dust
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
- G05D27/02—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00 characterised by the use of electric means
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- Automation & Control Theory (AREA)
- Health & Medical Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a device for pretreating a volatile soil sample, comprising: the seal box, the seal box inboard is equipped with weighing dish, humidity transducer and temperature sensor, one side of seal box is equipped with constant temperature equipment, the opposite side of seal box is equipped with humidification device, dehydrating unit, constant temperature equipment includes evaporimeter, condenser, compressor and the pipe that adjusts the temperature, the one end of evaporimeter pass through circulating line with the one end of condenser is connected, the other end of condenser with the compressor is connected, the other end of evaporimeter with the compressor is connected, the evaporimeter cladding is in adjust the temperature on the pipe, just adjust the temperature the both ends of pipe with the seal box intercommunication, be equipped with first circulating fan in the pipe that adjusts the temperature. The constant temperature device, the humidifying device and the dehumidifying device are arranged separately from the sealing box, so that the adverse influence of noise and vibration in work on the work of the weighing plate in the sealing box is reduced, and the device has the advantages of simple structure and accurate weighing.
Description
Technical Field
The invention relates to the technical field of pretreatment of volatile soil samples, in particular to a device for pretreating volatile soil samples.
Background
At present, in order to meet the requirements of a new national standard HJ836-2017 'gravimetric method for determining low concentration of a fixed pollution source' of the Ministry of environmental protection on weighing conditions after sampling, a high-precision balance is placed in a constant-temperature and constant-humidity environment, a sample to be weighed is placed in a constant-temperature and constant-humidity box body to be balanced for 24 hours and then weighed, and a working cabin can be completely closed to ensure that the system is effectively isolated from external dust particles.
The prior art can refer to the utility model patent with the publication number of CN209311262U, which discloses a high-precision constant-temperature and constant-humidity weighing system, comprising a control unit, a temperature and humidity control system, a base, a cover, a side door, a sample holder, a weighing part and a code scanner, wherein the weighing part comprises a base station, a damping table and a weighing unit, the base station is provided with a closed cover, the closed cover is provided with a movable door, the side surface of the cover is provided with a first through hole, the first through hole is connected with a flexible glove, the flexible glove comprises a hand and a hip connected with the hand, the inner side wall of the cover is fixedly connected with a first accommodating container, a second accommodating container is arranged in the first accommodating container, the first accommodating container and the second accommodating container are both in a transparent rectangle with an open top, and a plurality of damping springs are connected between the bottoms of the first accommodating container and the second accommodating; the utility model discloses a weighing device can avoid vibration and air current to the influence of weighing result, makes the weighing result more accurate.
The above prior art solutions have the following drawbacks: the high-precision constant-temperature and constant-humidity weighing system in the prior art is complex in structure, and the constant-temperature and constant-humidity system and the weighing system are arranged together, so that the vibration of the constant-temperature and constant-humidity system during working easily causes the precision of the weighing system.
Disclosure of Invention
The embodiment of the invention provides a device for pretreating a volatile soil sample, which aims to solve part of problems in the background art.
An embodiment of the present invention provides an apparatus for pretreating a volatile soil sample, including: the temperature control device comprises a sealing box, wherein a weighing disc, a humidity sensor and a temperature sensor are arranged on the inner side of the sealing box, a constant temperature device is arranged on one side of the sealing box, a humidifying device and a dehumidifying device are arranged on the other side of the sealing box, the constant temperature device comprises an evaporator, a condenser, a compressor and a temperature adjusting pipe, one end of the evaporator is connected with one end of the condenser through a circulating pipeline, the other end of the condenser is connected with the compressor, the other end of the evaporator is connected with the compressor, the evaporator is coated on the temperature adjusting pipe, two ends of the temperature adjusting pipe are communicated with the sealing box, and a first circulating fan is arranged in the temperature adjusting pipe; the humidifying device is communicated to the inside of the seal box through a humidity conveying pipe, and the dehumidifying device comprises: the air inlet pipe and one end of the air outlet pipe are communicated with the inside of the seal box, the other end of the air inlet pipe and the other end of the air outlet pipe are communicated with the inside of the dehumidification bag, the second circulation fan is arranged on the air inlet pipe, and activated carbon is arranged in the dehumidification bag; the upper end of the seal box is provided with a collecting pipe; the humidity sensor, the temperature sensor, the compressor, the first circulating fan, the humidifying device and the second circulating fan are connected with an upper computer.
Further, the lower end of the weighing plate is provided with a gravity sensor, and the gravity sensor is connected with the upper computer.
Further, the seal box is arranged on the balancing weight.
Furthermore, one side of the seal box is provided with an opening and closing door.
Furthermore, the switch door is made of transparent glass.
Further, the collecting pipe is provided with a switch valve.
Further, the humidifying device is an ultrasonic humidifier.
Further, the upper computer comprises a chip in MCU, singlechip or PLC.
Further, the temperature in the sealed box is 18 ℃, and the relative humidity in the sealed box is 50%.
The advantages of the invention are as follows: in the embodiment of the invention, the weighing plate is arranged in the seal box, and the influence of external air and dust on weighing is reduced by utilizing the sealing property of the seal box, so that the weighing precision can be further improved; secondly, a humidity sensor and a temperature sensor are arranged in the seal box, and the humidity sensor and the temperature sensor are used for sensing the temperature and humidity change in the seal box in real time, so that the upper computer triggers the constant temperature device, the humidifying device and the dehumidifying device to work, and the proper working environment is kept in the seal box. Meanwhile, the constant temperature device, the humidifying device and the dehumidifying device are arranged separately from the sealing box, so that the adverse influence of noise and vibration in the working process of the constant temperature device, the humidifying device and the dehumidifying device on the working of the weighing plate in the sealing box is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a seal box according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of electrical connection of the host computer according to an embodiment of the present invention.
FIG. 4 is a graph illustrating experimental results according to an embodiment of the present invention.
In the figure: the device comprises a sealing box 1, a gravity sensor 11, a balancing weight 12, an opening and closing door 13, a weighing disc 2, a humidity sensor 3, a temperature sensor 4, a thermostatic device 5, an evaporator 51, a condenser 52, a compressor 53, a temperature adjusting pipe 54, a first circulating fan 55, a humidifying device 6, a humidity conveying pipe 61, a dehumidifying device 7, an air inlet pipe 71, a dehumidifying bag 72, an air outlet pipe 73, a second circulating fan 74, a collecting pipe 8, an opening and closing valve 81 and an upper computer 9.
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, alterations, and improvements in the parts, components, and connections without departing from the spirit of the invention.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The present application will be described in detail with reference to the accompanying drawings 1 to 4 in conjunction with an embodiment.
The device for pretreating the volatile soil sample provided by the embodiment of the invention comprises: the device comprises a sealing box 1, wherein a weighing disc 2, a humidity sensor 3 and a temperature sensor 4 are arranged on the inner side of the sealing box 1, a constant temperature device 5 is arranged on one side of the sealing box 1, a humidifying device 6 and a dehumidifying device 7 are arranged on the other side of the sealing box 1, the constant temperature device 5 comprises an evaporator 51, a condenser 52, a compressor 53 and a temperature adjusting pipe 54, one end of the evaporator 51 is connected with one end of the condenser 52 through a circulating pipeline, the other end of the condenser 52 is connected with the compressor 53, the other end of the evaporator 51 is connected with the compressor 53, the evaporator 51 is covered on the temperature adjusting pipe 54, two ends of the temperature adjusting pipe 54 are communicated with the sealing box 1, and a first circulating fan 55 is arranged in the temperature adjusting pipe 54; the humidifying device 6 is communicated to the inside of the seal box 1 through a humidity conveying pipe 61, and the dehumidifying device 7 comprises: the dehumidifying device comprises an air inlet pipe 71, a dehumidifying bag 72, an air outlet pipe 73 and a second circulating fan 74, wherein one end of the air inlet pipe 71 and one end of the air outlet pipe 73 are communicated to the inside of the sealing box 1, the other end of the air inlet pipe 71 and the other end of the air outlet pipe 73 are communicated to the inside of the dehumidifying bag 72, the second circulating fan 74 is arranged on the air inlet pipe 71, and activated carbon is arranged in the dehumidifying bag 72; the upper end of the seal box 1 is provided with a collecting pipe 8; the humidity sensor 3, the temperature sensor 4, the compressor 53, the first circulation fan 55, the humidification device 6, and the second circulation fan 74 are connected to an upper computer 9.
The working principle is as follows: referring to fig. 1 and 3, in the embodiment of the present invention, first, the weighing plate 2 is disposed in the seal box 1, and the influence of the external air and dust on the weighing is reduced by using the sealing property of the seal box 1, so that the weighing precision can be provided; secondly, be provided with humidity transducer 3 and temperature sensor 4 in seal box 1, utilize humidity transducer 3 and temperature sensor 4 real-time perception seal box 1 in the humiture change to trigger thermostat 5, humidification device 6 and dehydrating unit 7 work by host computer 9, ensure to keep suitable operational environment in the seal box 1. Meanwhile, the circulating system consisting of the evaporator 51, the condenser 52 and the compressor 53 is adopted by the constant temperature device 5 in the embodiment of the invention, so that the advantages of stable temperature control and small vibration amplitude are achieved, and the constant temperature device 5, the humidifying device 6 and the dehumidifying device 7 are separately arranged from the sealing box 1, so that the adverse influence of noise and vibration in the working process of the constant temperature device 5, the humidifying device 6 and the dehumidifying device 7 on the working of the weighing disc 2 in the sealing box 1 is reduced.
In summary, in the embodiment of the present invention, the weighing plate 2 is first disposed on the seal box 1, and the influence of the external air and dust on the weighing is reduced by using the sealing property of the seal box 1, so as to provide the weighing precision; secondly, be provided with humidity transducer 3 and temperature sensor 4 in seal box 1, utilize humidity transducer 3 and temperature sensor 4 real-time perception seal box 1 in the humiture change to trigger thermostat 5, humidification device 6 and dehydrating unit 7 work by host computer 9, ensure to keep suitable operational environment in the seal box 1. Meanwhile, the constant temperature device 5, the humidifying device 6 and the dehumidifying device 7 are arranged separately from the sealing box 1, so that the adverse influence of noise and vibration in the operation of the constant temperature device 5, the humidifying device 6 and the dehumidifying device 7 on the operation of the weighing plate 2 in the sealing box 1 is reduced.
Specifically, the lower end of the weighing plate 2 is provided with a gravity sensor 11, the gravity sensor 11 is connected with the upper computer 9, and the weight change condition of the volatile soil to be processed in the weighing plate 2 can be well detected by the gravity sensor 11. For example, in practical use, if want to know the change situation of volatile soil sample self weight in the volatilization process, can be connected collecting pipe 8 with external air exhaust device, open switch valve 81, open thermostatic device 5, humidification device 6 and dehydrating unit 7, ensure that seal box 1 has invariable temperature and humidity environment, then constantly open air exhaust device, air exhaust device in the work gas exhaust that volatilizees volatile soil sample for volatile soil sample's weight constantly changes, and gravity sensor 11 gathers volatile soil sample's real-time weight once at a certain interval of time (such as 1h or 2h), the curve that obtains volatile soil sample's weight along with time change like this is shown in fig. 4. It can be seen that, as time goes on, the gradual volatilization of gas and water in the volatile soil sample is finished, and the sudden quality trend is kept constant.
Further, seal box 1 sets up on balancing weight 12, and the balancing weight 12 of setting can improve seal box 1's stability, is favorable to improving the accuracy of weighing. One side of seal box 1 is equipped with switch door 13, switch door 13 is the clear glass material, and the volatile soil sample of pending is convenient for draw by the switch door 13 of setting, and when switch door 13 was the clear glass material, the sample condition in the seal box 1 can be looked over to the staff of being convenient for. Collecting pipe 8 is equipped with ooff valve 81, and collecting pipe 8 is used for collecting the volatility gas sample of volatility soil to set up ooff valve 81 and can open when needs and sample, avoid the volatility gas leakage of volatility soil. The humidifying device 6 is an ultrasonic humidifier which has the advantages of simple structure and good atomization effect. The upper computer 9 comprises a chip of an MCU, a single chip microcomputer or a PLC, for example, in the embodiment of the invention, the upper computer 9 can be an AT89S51 series single chip microcomputer, the temperature in the seal box 1 is 18 ℃, the relative humidity in the seal box 1 is 50%, and the effect of obtaining volatile gas of volatile soil under the temperature and humidity is optimal.
It should be clear that the embodiments in this specification are described in a progressive manner, and the same or similar parts in the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. For embodiments of the method, reference is made to the description of the apparatus embodiments in part. The present invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known process techniques is omitted herein for the sake of brevity.
The above description is only an example of the present application and is not limited to the present application. Various modifications and alterations to this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (9)
1. An apparatus for pretreating a volatile soil sample, comprising: the sealing box comprises a sealing box (1), wherein a weighing disc (2), a humidity sensor (3) and a temperature sensor (4) are arranged on the inner side of the sealing box (1), a constant temperature device (5) is arranged on one side of the sealing box (1), a humidifying device (6) and a dehumidifying device (7) are arranged on the other side of the sealing box (1), the constant temperature device (5) comprises an evaporator (51), a condenser (52), a compressor (53) and a temperature adjusting pipe (54), one end of the evaporator (51) is connected with one end of the condenser (52) through a circulating pipeline, the other end of the condenser (52) is connected with the compressor (53), the other end of the evaporator (51) is connected with the compressor (53), the evaporator (51) is coated on the temperature adjusting pipe (54), and the two ends of the temperature adjusting pipe (54) are communicated with the sealing box (1), a first circulating fan (55) is arranged in the temperature adjusting pipe (54); the humidifying device (6) is communicated into the seal box (1) through a humidity conveying pipe (61), and the dehumidifying device (7) comprises: the air-conditioning system comprises an air inlet pipe (71), a dehumidifying bag (72), an air outlet pipe (73) and a second circulating fan (74), wherein one ends of the air inlet pipe (71) and the air outlet pipe (73) are communicated into the sealing box (1), the other ends of the air inlet pipe (71) and the air outlet pipe (73) are communicated into the dehumidifying bag (72), the second circulating fan (74) is arranged on the air inlet pipe (71), and activated carbon is arranged in the dehumidifying bag (72); the upper end of the seal box (1) is provided with a collecting pipe (8); the humidity sensor (3), the temperature sensor (4), the compressor (53), the first circulating fan (55), the humidifying device (6) and the second circulating fan (74) are connected with an upper computer (9).
2. Device for pretreating volatile soil samples according to claim 1, characterized in that a gravity sensor (11) is provided at the lower end of the weighing pan (2), the gravity sensor (11) being connected to the upper computer (9).
3. A device for pretreating volatile soil samples according to claim 1, wherein the sealing box (1) is disposed on a counterweight (12).
4. A device for pretreating volatile soil samples according to claim 1, wherein a switch door (13) is provided at one side of the sealed box (1).
5. Device for pretreating volatile soil samples according to claim 4, wherein the switch door (13) is made of transparent glass.
6. Device for pretreating volatile soil samples according to claim 1, wherein the collection tube (8) is provided with a switch valve (81).
7. A device for pretreating volatile soil samples according to claim 1, wherein the humidifying device (6) is an ultrasonic humidifier.
8. The device for pretreating volatile soil samples according to claim 1, wherein the upper computer (9) comprises one of a MCU, a single chip microcomputer or a PLC.
9. An apparatus for pretreating volatile soil samples according to claim 1, wherein the temperature in the sealed box (1) is 18 ℃ and the relative humidity in the sealed box (1) is 50%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110203102.3A CN112964529A (en) | 2021-02-23 | 2021-02-23 | Device for pretreating volatile soil sample |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110203102.3A CN112964529A (en) | 2021-02-23 | 2021-02-23 | Device for pretreating volatile soil sample |
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| CN112964529A true CN112964529A (en) | 2021-06-15 |
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| CN202110203102.3A Pending CN112964529A (en) | 2021-02-23 | 2021-02-23 | Device for pretreating volatile soil sample |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113933092A (en) * | 2021-09-17 | 2022-01-14 | 江苏绿泰检测科技有限公司 | Comprehensive detection method and detection system for middle and lower layer soil |
| CN114047179A (en) * | 2021-09-26 | 2022-02-15 | 浙江亚凯检测科技有限公司 | Method and device for detecting soil organic matters in suspected contaminated area |
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| US20160216186A1 (en) * | 2013-09-25 | 2016-07-28 | Shanghai Tobacco Group Co., Ltd | Full-automatic dynamic tobacco moisture analysis climate chamber |
| CN204255789U (en) * | 2014-12-16 | 2015-04-08 | 中国科学院重庆绿色智能技术研究院 | A kind of constant temperature and humidity cleaning weighs environmental control equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113933092A (en) * | 2021-09-17 | 2022-01-14 | 江苏绿泰检测科技有限公司 | Comprehensive detection method and detection system for middle and lower layer soil |
| CN114047179A (en) * | 2021-09-26 | 2022-02-15 | 浙江亚凯检测科技有限公司 | Method and device for detecting soil organic matters in suspected contaminated area |
| CN114047179B (en) * | 2021-09-26 | 2024-06-04 | 江苏格林勒斯检测科技有限公司 | Suspected contaminated area soil organic matter detection method and detection device |
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Application publication date: 20210615 |