CN215641249U - Test device for soil control research of PAHs photodegradation - Google Patents

Abstract

The utility model discloses a test device for researching PAHs photodegradation by soil control, which belongs to the technical field of soil sampling, and comprises a test box main body with support legs, wherein a soil sample vessel is arranged at the bottom of the test box main body, a conical boss is arranged at the top of the soil sample vessel, a plurality of through grooves are formed in the circumferential array distribution of the conical surface of the conical boss, a support frame is arranged at the bottom of the test box main body, a T-shaped elastic pressing rod is movably and alternately arranged on the support frame, a sealing plate is connected to the bottom of the T-shaped elastic pressing rod, a compression spring is sleeved on the outer wall of the T-shaped elastic pressing rod, and the lower end of the compression spring is pressed against the sealing plate to keep the sealing plate in a downward pressing and sealing state when the soil sample vessel is not installed. Meanwhile, the convenience of experimental operation is improved.

Description

Test device for soil control research of PAHs photodegradation

Technical Field

The utility model relates to the technical field of soil sampling, in particular to a test device for researching the photodegradation of PAHs by soil control.

Background

The soil pollution prevention and control related policies are closely related to power grid enterprises, and the related pollution of the power grid enterprises mainly comprises two types: the method mainly comprises organic pollution and heavy metal pollution, wherein the organic pollution mainly comprises insulating oil/gas of a transformer substation, organic paint and other media, and the heavy metal pollution mainly comprises waste lead-acid storage batteries and other pollutants. Most of the pollutants are finally enriched in the soil, so soil pollution control is important. The photodegradation of PAHs is one of the main effective means for researching soil control.

The large delocalized pi-bond of PAHs can absorb the visible and ultraviolet parts of sunlight, and the polycyclic aromatic hydrocarbon in surface soil is degraded by photolysis, so that the PAHs has the advantages of high efficiency, rapidness, thoroughness, no selectivity, applicability to high-concentration polycyclic aromatic hydrocarbon pollution remediation, good effect of removing high-molecular-weight polycyclic aromatic hydrocarbon and the like. While the path and mechanism of polycyclic aromatic hydrocarbon photolysis in soil are not clear. For this patent application number is CN 201922370832.3's utility model patent discloses a test device of PAHs photodegradation in oxygen regulation and control research soil, through main part reactor, support, thermostat, light source, gas vent, gas transmission mouth, gaseous regulation and control device, storage oxygen steel bottle and the cooperation setting of storing the nitrogen gas steel bottle, can conveniently carry out the experiment of photodegradation to PAHs in the surface course soil under different oxygen concentration conditions. However, in the device, need drive original inside air through the experimental gas of injecting into the abundant in the equipment box before the experiment at every turn, can't directly experiment, not only cause the gaseous waste of experiment, the operation is also comparatively loaded down with trivial details moreover.

Based on the above, the utility model designs a test device for researching the photodegradation of PAHs by soil control, so as to solve the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a test device of soil control research PAHs photodegradation to solve above-mentioned technical problem.

In order to realize the purpose, the utility model provides the following technical scheme: the utility model provides a test device of soil control research PAHs photodegradation, is including the test box main part that has the stabilizer blade, the bottom of test box main part is provided with the soil sample ware, the top of soil sample ware is provided with the toper boss, a plurality of logical grooves have been seted up to toper boss conical surface circumference array distribution, the bottom of test box main part is provided with the support frame, the activity alternates on the support frame and is provided with T shape snapping pole, the bottom of T shape snapping pole is connected with the closing plate, the outer wall cover of T shape snapping pole is equipped with compression spring, compression spring's lower extreme supports and presses the closing plate makes it not install keep pushing down the encapsulated situation during the soil sample ware.

Preferably, the bottom of the test box main body is provided with a step internal thread port for installing the soil sample vessel, the neck part of the outer wall of the soil sample vessel is provided with a step external thread, and the soil sample vessel is screwed and connected with the bottom of the test box main body.

Preferably, the circumference of the bottom surface of the sealing plate is provided with a sealing rubber ring in a sticking manner, and the sealing plate is sealed by the sealing rubber ring and the step surface of the step internal thread opening in a sticking manner when being pressed downwards.

Preferably, one side of the test box main body is connected with an air inlet pipe, and the input end of the air inlet pipe is connected to the oxygen gas storage bottle and the nitrogen gas storage bottle through Y-shaped pipes respectively.

Preferably, the oxygen gas storage cylinder and the nitrogen gas storage cylinder are respectively provided with a flow meter with a valve.

Preferably, the outer wall of the test box main body is embedded with a digital display detector.

Compared with the prior art, utility model's beneficial effect does:

the soil sample vessel is arranged at the bottom of the test box main body through threaded connection, when the soil sample vessel is separated from the test box main body and detached, the sealing plate automatically moves downwards under the elastic pressing action of the compression spring to seal the step internal threaded opening so as to prevent air from entering the test box main body and directly install the soil sample vessel for use in the next experiment; consequently this device has experiment gas environment and keeps the function, only needs the interior air of driving test box main part for the first time during the use, and the experiment that follow-up gas environment is the same can directly go on, not only can save the experiment gas and use, has also promoted the convenience of experiment operation simultaneously.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive work.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the installation state of the soil sample vessel and the test box main body according to the present invention;

FIG. 3 is a schematic structural diagram of the soil sample vessel and the test box body in a separated state.

In the drawings, the components represented by the respective reference numerals are listed below:

1-a test box main body, 2-support legs, 3-a soil sample vessel, 31-step external threads, 4-a conical boss, 5-a through groove, 6-a support frame, 7-a T-shaped elastic compression rod, 8-a sealing plate, 9-a compression spring, 10-a sealing rubber ring, 11-a step internal thread port, 12-an air inlet pipe, 13-a Y-shaped pipe, 14-an oxygen gas storage bottle, 15-a nitrogen gas storage bottle, 16-a flow meter with a valve and 17-a digital display detector.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive work based on the embodiments of the present invention belong to the protection scope of the present invention.

Referring to fig. 1-3, the utility model provides a technical solution: the utility model provides a test device of soil control research PAHs photodegradation, including the proof box main part 1 that has stabilizer blade 2, one side of proof box main part 1 is connected with intake pipe 12, the input of intake pipe 12 is connected to oxygen gas bomb 14 and nitrogen gas bomb 15 respectively through Y venturi tube 13, be used for to the mixed gas of input experiment in the proof box main part 1, the oxygen gas bomb 14 and the nitrogen gas bomb 15 are gone up and are respectively provided with the flowmeter 16 of taking the valve, be used for regulating and control the ratio of two kinds of gases respectively, proof box main part 1 outer wall inlays to be installed with digital display detector 17, be used for the experimental environment in inspection monitoring proof box main part 1, digital display detector 17 function includes detecting temperature, humidity, gas content, illuminance etc. in the proof box main part 1; the bottom of the test box main body 1 is provided with a soil sample vessel 3, the bottom of the test box main body 1 is provided with a step inner threaded opening 11 for installing the soil sample vessel 3, the neck part of the outer wall of the soil sample vessel 3 is provided with a step outer thread 31, the soil sample vessel 3 is screwed and connected with the bottom of the test box main body 1, the bottom surface circumference of the sealing plate 8 is provided with a sealing rubber ring 10 in an adhering manner, when the sealing plate 8 is pressed downwards, sealing is realized by the adhering of the sealing rubber ring 10 and the step surface of the step inner threaded opening 11, the top of the soil sample vessel 3 is provided with a conical boss 4, when the conical boss 4 is used for installation, the sealing plate 8 is lifted to open the step inner threaded opening 11, the conical surface circumferential array of the conical boss 4 is provided with a plurality of through grooves 5, the size of the through grooves 5 is enough to conveniently load soil, and the through groove 5 is structurally used for communicating the inner cavity environment of the soil sample vessel 3 with the inner cavity environment of the test box main body 1, make soil sample experiment under experimental gas environment, the bottom of test box main part 1 is provided with support frame 6, and the activity interlude is provided with T shape suppression pole 7 on support frame 6, and T shape suppression pole 7's bottom is connected with closing plate 8, and the outer wall cover of T shape suppression pole 7 is equipped with compression spring 9, and compression spring 9's lower extreme supports to press closing plate 8 to make it keep pushing down the closed condition when not installing soil sample ware 3.

Working principle embodiment:

when the test box is used for the first time, the soil sample vessel 3 is not installed, the sealing plate 8 is pressed downwards to seal the step internal threaded port 11, the mixture ratio of oxygen and nitrogen is determined according to the required experimental gas environment, mixed gas with the specified mixture ratio is injected into the test box main body 1 through controlling the flow meter 16 with the valve, the original air in the test box main body 1 is exhausted, the flow meter 16 with the valve and the original air outlet channel in the test box main body 1 are closed after the air exhaust is completed, the experimental gas is filled in the test box main body 1, and whether the current gas content ratio in the test box main body 1 meets the composite requirement or not can be monitored and verified through the digital display detector 17; after the device is ready, a soil sample is filled in the soil sample vessel 3, the soil sample vessel 3 is screwed below the step internal thread opening 11 through the step external thread 31 after the filling is finished, the soil sample vessel 3 is pressed against the sealing plate 8 by utilizing the conical boss 4 at the top of the soil sample vessel 3 in the screwing process, the sealing plate 8 and the T-shaped elastic pressing rod 7 are lifted through the stress contraction of the compression spring 9, the sealing rubber ring 10 at the bottom of the sealing plate 8 is separated from the step surface of the step internal thread opening 11, so that the soil sample vessel 3 is communicated with the experimental environment of the test box main body 1, after the experiment is finished, the soil sample vessel 3 is reversely rotated to be separated from the test box main body 1, the sealing plate 8 loses the pressing effect of the conical boss 4 in the separating process and is pressed downwards under the restoring elasticity effect of the compression spring 9 to keep the pressing closed state when the soil sample vessel 3 is not installed, so as to prevent external air from entering the test box main body 1, because the internal gas of a small amount of inevitable loss or is replaced in the handling process, consequently accessible has the content of experimental gas of digital detector 17 detection, when content or proportion mismatch appear in the experimental gas, can carry out appropriate gas replenishment.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," "fixed," "screwed" and the like are to be construed broadly, e.g., as a fixed connection, a detachable connection, or an integral part; can be mechanically or electrically connected; the term "connected" may refer to a direct connection, an indirect connection through an intermediate, a connection between two elements or an interaction relationship between two elements, and unless otherwise specifically defined, the term should be understood as having a specific meaning in the present application by those skilled in the art.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. A test device for soil control research on PAHs photodegradation is characterized by comprising a test box main body (1) with support legs (2), a soil sample vessel (3) is arranged at the bottom of the test box main body (1), a conical boss (4) is arranged at the top of the soil sample vessel (3), a plurality of through grooves (5) are distributed on the conical surface of the conical boss (4) in a circumferential array manner, a support frame (6) is arranged at the bottom of the test box main body (1), a T-shaped elastic compression rod (7) is movably inserted on the support frame (6), the bottom of the T-shaped elastic pressing rod (7) is connected with a sealing plate (8), the outer wall of the T-shaped elastic pressing rod (7) is sleeved with a compression spring (9), the lower end of the compression spring (9) is pressed against the sealing plate (8) to keep a downward pressing and sealing state when the soil sample vessel (3) is not installed.

2. The test device for soil control research on PAHs photodegradation of claim 1, wherein: the bottom of test box main part (1) is seted up and is used for the installation step internal thread mouth (11) of soil sample ware (3), the outer wall neck of soil sample ware (3) is provided with step external screw thread (31), soil sample ware (3) spiral shell connect in the bottom of test box main part (1).

3. The test device for soil control research on PAHs photodegradation of claim 2, wherein: the bottom surface circumference of closing plate (8) is pasted and is provided with sealing rubber ring (10), pass through when closing plate (8) pushes down sealing rubber ring (10) with the step face laminating of step internal thread mouth (11) realizes sealedly.

4. The test device for soil control research on PAHs photodegradation of claim 1, wherein: one side of test box main part (1) is connected with intake pipe (12), the input of intake pipe (12) is connected to oxygen gas bomb (14) and nitrogen gas bomb (15) respectively through Y venturi tube (13).

5. The test device for soil control research on PAHs photodegradation of claim 4, wherein: and the oxygen gas storage bottle (14) and the nitrogen gas storage bottle (15) are respectively provided with a flow meter (16) with a valve.

6. The test device for soil control research on PAHs photodegradation of claim 1, wherein: the outer wall of the test box main body (1) is embedded with a digital display detector (17).

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