CN221100243U - Soil heavy metal detection device - Google Patents

Abstract

The utility model discloses a soil heavy metal detection device which comprises a treatment barrel, a main shaft and sampling fixing rods, wherein the treatment barrel is used for being matched with the soil to be detected to stir, the sampling fixing rods are used for fixing sampling instruments, the treatment barrel is arranged on a machine base, a lifting assembly is arranged at the rear side of the treatment barrel and comprises a lifting screw and a lifting plate, a stirring motor is fixed on the lifting plate, fixing covers are symmetrically arranged on the two sides of the lifting assembly and are positioned on the upper side of the treatment barrel, a plurality of sampling fixing rods are connected to the fixing covers, and adjusting grooves for fixing the sampling fixing rods are formed in the fixing covers. According to the utility model, the forward rotation and the reverse rotation of the main shaft are utilized, so that the change of different states of the soil mixture is realized, and the soil in different areas is sampled by utilizing the sampling fixing rods in different states, so that the soil in different areas is sampled, the sampling analysis is further compared, and the soil sampling efficiency is improved.

Description

Soil heavy metal detection device

Technical Field

The utility model relates to the field of soil detection, in particular to a soil heavy metal detection device.

Background

The existence form and chemical property of heavy metal formed by various reactions such as dissolution, condensation and sedimentation determine the migration of heavy metal in soil and the harm degree of heavy metal to human body, and the existence form of heavy metal determines the migration and transformation characteristics, the harm degree and the pollution property. Heavy metals are mostly transition elements with unique variable valence states, and can undergo oxidation-reduction reaction under certain conditions. The heavy metals have different valence states and different toxicity and activity. The analysis result of the heavy metal chemical form extraction has obvious relation with the bioavailability of the heavy metal in the soil, and the ion exchange state and the soluble state of the heavy metal element in the soil are generally considered to be most easily absorbed by plants, so that the bioavailability is the highest; the heavy metal elements in carbonate state, humic acid combined state, ferro-manganese oxidation state and strong organic combined state are influenced by the type of soil matrix, geographical landscape, physicochemical properties and the like, and the bioavailability difference is large; the bioavailability of the heavy metal element in the residue state is relatively low. The spatial distribution research of the heavy metals in the farmland soil of China generally has the problems that individual sample point values replace regional average values, sample points are few or are not developed for effective evaluation and the like, and the actual distribution characteristic level of the heavy metals in the farmland soil of China is difficult to comprehensively reflect.

To detect heavy metal elements in soil, two basic steps of sampling and analyzing are generally performed. Errors in soil sampling refer to errors and variability that may occur when soil sampling is performed, including the selection of sampling points, sampling depth, the number and representativeness of samples sampled, and the means and method of sampling. The analysis error of the soil refers to errors and deviations possibly occurring in the process of analyzing the soil, and the errors can be from links such as sample processing, laboratory soil analysis, data analysis and the like.

In general, the sampling error of the soil is larger than the analysis error of the soil. Because soil sampling errors are typically introduced during soil sample collection, and analysis errors are generated by laboratory analysis. Soil is heterogeneous, and soil samples collected only cannot represent soil characteristics of the whole area, so that sampling errors are generated. The technology during sampling is limited, which may result in an inaccurate and complete acquisition of a representative soil sample. Moreover, soil is a dynamic system, the properties of which may change over time and space, and the time difference between the sampling and analysis processes may cause the characteristics of the soil to change, thereby increasing sampling errors. Therefore, the sampling error is important in detecting the heavy metal elements in the soil, and the number of the elements, the element types, the time effect, the safety of sampling personnel and the like which are measured can be directly related, so that the sampled soil is more important. On the basis of considering the reduction of the sampling error of the soil, the team explores and researches the heavy metal in-situ detection technology of the polluted soil in a deeper step.

The method for measuring the heavy metal pollution content in the soil generally comprises the following steps: soil sampling and chemical analysis, biological monitoring, soil sensor technology measurement, in situ detection technology measurement, and the like. The in-situ detection technology is a method for directly carrying out on-site detection on soil, and can avoid sampling and experimental analysis processes. Traditional original detection technology methods comprise an X-ray fluorescence spectrometry, a field scanning plasma mass spectrometry and a soil conductivity measurement method. The traditional in-situ detection technology has convenience, instantaneity and nondestructivity, and is suitable for on-site real-time monitoring and preliminary evaluation of the pollution condition of the heavy metal elements in the soil. There are limitations such as sensitivity, selectivity and accuracy, and high cost. Aiming at the point, the team designs a DGT-based in-situ detection technology for heavy metal elements in the polluted soil.

At present, when sampling and analyzing soil, a mode of mixed sampling and layered sampling is adopted, and stirring equipment is needed in the two modes, so that soil mixture is sufficiently stirred and layered, and therefore, processing equipment is needed, and sampling in different states can be rapidly realized.

Disclosure of utility model

The utility model aims to solve the problems and provide a soil heavy metal detection device.

The utility model realizes the above purpose through the following technical scheme:

The utility model provides a soil heavy metal detection device, including being used for the cooperation to carry out the processing bucket, main shaft and be used for fixed sampling instrument's sample dead lever that stirs to the soil that will detect, processing bucket installs on the frame, processing bucket rear side is provided with lifting unit, lifting unit includes lifting screw and lifter plate, be fixed with the agitator motor on the lifter plate, lifting unit both sides are located processing bucket upside symmetry and are provided with the fixed cover, be connected with a plurality of sample dead lever on the fixed cover, the shaping has the adjustment tank of fixed sample dead lever on the fixed cover;

The power output end of the stirring motor penetrates through the lifting assembly to be connected with a main shaft positioned in the treatment barrel, the bottom of the main shaft is fixedly connected with a third stirring rod, the main shaft is rotationally connected with a first stirring rod and a second stirring rod, and the first stirring rod, the second stirring rod and the third stirring rod are distributed from top to bottom.

Preferably: the corresponding surfaces of the two fixed covers are provided with magnetic blocks, and the bottoms of the fixed covers are clamped with the treatment barrel.

So set up, the magnetic path is used for the fixed lid of quick connect, guarantees the fixed effect of installation of fixed lid.

Preferably: the first stirring rod, the second stirring rod and the third stirring rod are composed of a central ring and a separating rod, and the bottom surfaces of the stirring rods of the first stirring rod, the second stirring rod and the third stirring rod are all attached to the inner bottom surface of the treatment barrel.

So set up, when first puddler, second puddler, third puddler expand, can drive the soil mixture of handling the bucket bottom.

Preferably: the machine base is correspondingly provided with a clamping ring, and the treatment barrel is connected with the clamping ring through a clamping buckle.

Preferably: the separating rods of the first stirring rod, the second stirring rod and the third stirring rod are divided into two groups, and the outsides of each group of separating rods are connected through a traction rope.

The third stirring rod is a main power rod, the first stirring rod and the second stirring rod are pulled and unfolded through the traction rope, and meanwhile, the side surfaces of the first stirring rod and the third stirring rod are inclined surfaces, so that the shoveling effect on soil is guaranteed.

Preferably: the sampling fixing rod is connected with the adjusting groove in a sliding manner, the overlooking section of the sampling fixing rod is elliptical, the sampling fixing rod is connected with the adjusting groove in a clamping manner, the long shaft of the sampling fixing rod is larger than the groove width of the adjusting groove, the short shaft of the sampling fixing rod is smaller than the groove width of the adjusting groove, and the sampling fixing rod is made of hard rubber.

So set up, through rotatory sample dead lever, can realize taking off and fixed of sample dead lever in the adjustment tank inside fast to adjust the relative position of sample dead lever on fixed cover, with this the height of fixing the sample film or the sample needle in sample dead lever bottom of adjusting, thereby sample analysis is carried out to soil mixture.

Preferably: the sampling fixing rod is provided with a through hole along the axial direction.

So configured, the aperture is adapted to pass through the sampling needle to secure it.

Compared with the prior art, the utility model has the following beneficial effects:

The forward rotation and the reverse rotation of the main shaft are utilized, so that the change of different states of a soil mixture is realized, the soil in different areas is obtained by sampling the soil by utilizing the sampling fixing rods in different states, the sampling analysis is further compared, and the soil sampling efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic structural view of a soil heavy metal detection device according to the present utility model;

FIG. 2 is an exploded view of a soil heavy metal detection device according to the present utility model;

fig. 3 is a schematic structural diagram of a third stirring rod of the soil heavy metal detection device in a first state;

Fig. 4 is a schematic structural diagram of a third stirring rod of the soil heavy metal detection device in a second state;

fig. 5 is a schematic exploded view of a main shaft of a soil heavy metal detecting device according to the present utility model.

The reference numerals are explained as follows:

1. A base; 2. a treatment barrel; 3. a clasp; 4. a lifting assembly; 5. a stirring motor; 6. a fixed cover; 61. a magnetic block; 7. a sampling fixing rod; 71. an adjustment tank; 8. a main shaft; 81. a first stirring rod; 82. a second stirring rod; 83. a third stirring rod; 84. a traction rope.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model is further described below with reference to the accompanying drawings:

As shown in fig. 1-5, a soil heavy metal detection device comprises a treatment barrel 2 for stirring soil to be detected, a main shaft 8 and a sampling fixing rod 7 for fixing sampling devices, wherein the treatment barrel 2 is arranged on a machine base 1, a lifting assembly 4 is arranged at the rear side of the treatment barrel 2, the lifting assembly 4 comprises a lifting screw and a lifting plate, a stirring motor 5 is fixed on the lifting plate, fixing covers 6 are symmetrically arranged at two sides of the lifting assembly 4 and positioned at the upper side of the treatment barrel 2, a plurality of sampling fixing rods 7 are connected to the fixing covers 6, and an adjusting groove 71 for fixing the sampling fixing rods 7 is formed in the fixing covers 6;

The power output end of the stirring motor 5 penetrates through the lifting assembly 4 to be connected with a main shaft 8 positioned in the treatment barrel 2, a third stirring rod 83 is fixedly connected to the bottom of the main shaft 8, a first stirring rod 81 and a second stirring rod 82 are rotatably connected to the main shaft 8, and the first stirring rod 81, the second stirring rod 82 and the third stirring rod 83 are distributed from top to bottom.

In this embodiment, the magnetic blocks 61 are mounted on the corresponding surfaces of the two fixed covers 6, the bottom of the fixed cover 6 is clamped with the processing barrel 2, and the magnetic blocks 61 are used for quickly connecting the fixed covers 6, so as to ensure the mounting and fixing effects of the fixed covers 6.

In this embodiment, the first stirring rod 81, the second stirring rod 82 and the third stirring rod 83 are composed of a central ring and a separating rod, the bottom surfaces of the stirring rods of the first stirring rod 81, the second stirring rod 82 and the third stirring rod 83 are attached to the inner bottom surface of the treatment tank 2, and when the first stirring rod 81, the second stirring rod 82 and the third stirring rod 83 are unfolded, the soil mixture at the bottom of the treatment tank 2 can be driven.

In this embodiment, the base 1 is correspondingly provided with a snap ring 3, and the treatment barrel 2 is connected with the snap ring 3 through a buckle.

In this embodiment, the separating rods of the first stirring rod 81, the second stirring rod 82 and the third stirring rod 83 are divided into two groups, the outer sides of each group of separating rods are connected through a traction rope 84, the third stirring rod 83 is a main power rod, the first stirring rod 81 and the second stirring rod 82 are pulled and unfolded through the traction rope 84, and meanwhile, the side surfaces of the first stirring rod 81 and the third stirring rod 83 are inclined surfaces, so that the soil shoveling effect is guaranteed.

In this embodiment, the sampling fixing rod 7 is slidingly connected with the adjusting groove 71, the section of the sampling fixing rod 7 in overlook is oval, and the sampling fixing rod 7 is clamped with the adjusting groove 71, the long axis of the sampling fixing rod 7 is larger than the groove width of the adjusting groove 71, the short axis of the sampling fixing rod 7 is smaller than the groove width of the adjusting groove 71, the sampling fixing rod 7 is made of hard rubber, the sampling fixing rod 7 can be quickly removed and fixed in the adjusting groove 71 by rotating the sampling fixing rod 7, so that the relative position of the sampling fixing rod 7 on the fixing cover 6 is adjusted, and the height of a sampling film or a sampling needle fixed at the bottom of the sampling fixing rod 7 is adjusted, so that the soil mixture is sampled and analyzed.

In this embodiment, the sampling fixing rod 7 is perforated with a hole in the axial direction, and the hole is used to pass through the sampling needle to fix the sampling needle.

Working principle: firstly, placing soil to be detected into a treatment barrel 2, introducing reagents to be mixed, and adsorbing and fixing two fixed covers 6 at the upper end of the treatment barrel 2 by using a magnetic block 61, and starting equipment;

in the first stage, turbid samples are taken, sampling equipment is fixed on sampling fixing rods 7, then the sampling fixing rods 7 are rotated to enable the sampling fixing rods 7 to be fixed on a fixing cover 6, so that the height and the position of each sampling fixing rod 7 are fixed, a stirring motor 5 is controlled to drive a main shaft 8 and a third stirring rod 83 to rotate anticlockwise, at the moment, the first stirring rod 81 and the second stirring rod 82 are not powered, the third stirring rod 83 is overlapped with the first stirring rod 81 and the second stirring rod 82 when rotating, and therefore the state of fig. 3 is formed for stirring, and in stirring, sampling detection is carried out by using a sampling film or a sampling needle fixed at the bottom of the sampling fixing rods 7;

when the second stage is performed, the mixture is kept stand for a certain time to form layering, at this time, the stirring motor 5 is controlled to drive the main shaft 8 and the third stirring rod 83 to rotate clockwise, at this time, the state of fig. 4 is formed, the third stirring rod 83 pulls the first stirring rod 81 and the second stirring rod 82 to rotate, the rotating speed is very low, the mixture formed by the inner parts is integrally driven to rotate, no greater turbidity occurs, and all layering synchronously rotates, so that sampling is performed.

The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims.

Claims (7)

1. Soil heavy metal detection device, its characterized in that: including being used for cooperating and carrying out the processing bucket (2) that stirs with the soil that needs to detect, main shaft (8) and be used for fixed sampling instrument's sample dead lever (7), processing bucket (2) are installed on frame (1), processing bucket (2) rear side is provided with lifting unit (4), lifting unit (4) include lifting screw and lifter plate, be fixed with agitator motor (5) on the lifter plate, lifting unit (4) both sides are located processing bucket (2) upside symmetry is provided with fixed lid (6), be connected with a plurality of sample dead lever (7) on fixed lid (6), the shaping is gone up to fixed lid (6) has fixed adjustment tank (71) of sample dead lever (7);

the power output end of the stirring motor (5) penetrates through the lifting assembly (4) to be connected with a main shaft (8) inside the processing barrel (2), a third stirring rod (83) is fixedly connected to the bottom of the main shaft (8), a first stirring rod (81) and a second stirring rod (82) are rotatably connected to the main shaft (8), and the first stirring rod (81), the second stirring rod (82) and the third stirring rod (83) are distributed from top to bottom.

2. The soil heavy metal detection device of claim 1, wherein: the magnetic blocks (61) are arranged on the corresponding surfaces of the two fixed covers (6), and the bottoms of the fixed covers (6) are clamped with the processing barrel (2).

3. The soil heavy metal detection device of claim 1, wherein: the first stirring rod (81), the second stirring rod (82) and the third stirring rod (83) are composed of a central ring and a separating rod, and the bottom surfaces of the stirring rods of the first stirring rod (81), the second stirring rod (82) and the third stirring rod (83) are attached to the inner bottom surface of the treatment barrel (2).

4. The soil heavy metal detection device of claim 1, wherein: the machine seat (1) is correspondingly provided with a clamping ring (3), and the treatment barrel (2) is connected with the clamping ring (3) through a buckle.

5. The soil heavy metal detection device of claim 1, wherein: the separating rods of the first stirring rod (81), the second stirring rod (82) and the third stirring rod (83) are divided into two groups, and the outer sides of the separating rods of each group are connected through a traction rope (84).

6. The soil heavy metal detection device of claim 1, wherein: the utility model discloses a sampling fixing rod, including adjusting groove (71), sample fixing rod (7), adjusting groove (71), sample fixing rod (7) overlook the cross-section and be oval, just sample fixing rod (7) joint adjusting groove (71), the major axis of sample fixing rod (7) is greater than the groove width of adjusting groove (71), the minor axis of sample fixing rod (7) is less than the groove width of adjusting groove (71), sample fixing rod (7) material is hard rubber.

7. The soil heavy metal detection device of claim 1, wherein: the sampling fixing rod (7) is provided with a through hole along the axial direction.