CN209231073U - A kind of dissolved organic matter extraction integrated apparatus - Google Patents

Abstract

The utility model relates to an integrated device for extracting soil soluble organic matter. The structure includes an outer cylinder, an inner cylinder, a filter membrane, a bracket and a sealing cover; the inner cylinder is located inside the outer cylinder, and the bracket is connected between the outer cylinder and the inner cylinder; There are several circular holes on the wall of the inner cylinder, and the filter membrane is set at the circular holes on the inner cylinder; there is also an inner convex edge on the inner cylinder wall, and the inner convex edge is located in the middle of the inner cylinder. The hole is opened on the inner cylinder wall above the inner convex rim. Several through holes are opened on the bracket. The minimum distance between the lowest circular hole and the bottom of the inner cylinder is about 2/3 of the height of the inner cylinder. Both the outer cylinder and the inner cylinder are U-shaped cylinders whose bottom is concave downward, and the axis of the outer cylinder coincides with the axis of the inner cylinder. The utility model can reduce the times of solution transfer, strengthen the centrifugation and filtration functions, improve the extraction rate, simplify the extraction process, shorten the extraction time, improve the working efficiency and save the cost.

Description

An integrated device for extracting soil dissolved organic matter

technical field

The utility model relates to a soil analysis and processing device, in particular to an integrated device for extracting soil soluble organic matter.

Background technique

Soil dissolved organic matter (DOM, Dissolved organic matter) is the energy and carbon source of soil microorganisms, and plays a key role in the regulation of soil physical and chemical properties, so it is used as an important physical and chemical index to measure soil quality. Before analyzing the dissolved organic matter in the soil, it is necessary to extract the dissolved organic matter in the soil. The traditional extraction method is to prepare multiple containers (or test tubes) and perform tedious extraction operations such as shaking, centrifuging, and filtering manually. , the supernatant needs to undergo repeated operations of multiple transfers and multiple filtrations, and needs to pass through multiple containers. The more containers passed, the greater the error, and the separated solution is more likely to be polluted, resulting in a low extraction rate and It is taking too long.

Utility model content

The purpose of the utility model is to provide an integrated device for extracting soil dissolved organic matter to solve the existing problems of low extraction rate and long time consumption in the extraction process of soil dissolved organic matter.

The utility model is realized as follows: an integrated device for extracting soil soluble organic matter, comprising an outer cylinder, an inner cylinder, a filter membrane, a bracket and a sealing cover; the inner cylinder is located inside the outer cylinder, and the bracket is connected to Between the outer cylinder and the inner cylinder; there are several circular holes on the wall of the inner cylinder, and the filter membrane is arranged at the circular holes on the inner cylinder; in the inner cylinder An inner convex edge is also provided on the cylinder wall, and the inner convex edge is located at the middle position of the inner cylinder, and the circular hole is opened on the inner cylinder wall above the inner convex edge.

Several through holes are opened on the bracket.

The minimum distance between the lowest circular hole and the bottom of the inner cylinder is about 2/3 of the height of the inner cylinder.

The number of the brackets is not less than two and they are evenly distributed around the axis of the outer cylinder.

Both the outer cylinder and the inner cylinder are U-shaped cylinders with downwardly concave bottoms, and the axis of the outer cylinder coincides with the axis of the inner cylinder.

There is a section of protruding cylinder on the sealing cover, and the diameter of the cylinder is slightly larger than the radius of the inner wall of the inner cylinder, so that it can seal the port of the inner cylinder.

The filter membrane is a hydrophilic polyethersulfone (PES) filter membrane.

The inner cylinder and the outer cylinder of the utility model are connected by brackets, and there are several round holes on the wall of the inner cylinder, and a filter membrane is installed on the round holes, and there is a large gap between the filter membrane and the bottom of the inner cylinder. The distance can effectively guarantee the oscillation effect. At the same time, an inner convex edge is provided in the middle of the height of the inner wall of the inner cylinder, which can effectively prevent the solid particles from moving upward during the centrifugation process. The support forms a liquid storage space between the outer cylinder and the inner cylinder, and a through hole is opened on the support to facilitate dumping of the liquid in the outer cylinder after centrifugal filtration. The protruding cylinder on the sealing cap is used to seal the port of the inner cylinder, so that the filtered liquid in the inner cylinder can enter or pour out of the outer cylinder during oscillation, centrifugation and pouring.

The utility model can reduce the times of solution transfer, strengthen the centrifugation and filtration functions, improve the extraction rate, simplify the extraction process, shorten the extraction time, improve the working efficiency and save the cost.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a view along the line A-A of Fig. 1 .

In the figure: 1. Outer cylinder; 2. Inner cylinder; 3. Support; 4. Filter membrane; 5. Inner convex edge; 6. Sealing cover.

Detailed ways

As shown in Fig. 1 and Fig. 2, the utility model comprises an outer cylinder 1, an inner cylinder 2, a filter membrane 4, a bracket 3 and a sealing cover 6. The inner cylinder 2 is located inside the outer cylinder 1, and the inner cylinder 2 and the outer cylinder 1 are connected to each other through the bracket 3, so that a certain space is formed between the outer cylinder 1 and the inner cylinder 2 for storing the solution. There are several circular holes on the side wall of the inner cylinder 2, and the filter membrane 4 is arranged at the circular holes on the inner cylinder 2, and the filter membrane 4 completely covers the circular holes, and the solution in the inner cylinder 2 is filtered through the filter membrane 4. Then enter the outer cylinder 1.

The bracket 3 only exists in the upper half of the device, and it only needs to be able to support the inner cylinder 2 in the outer cylinder 1, so that the inner cylinder 2 does not directly contact the outer cylinder 1. The number of brackets 3 should be no less than two, and they are evenly distributed around the axis of the outer cylinder 1. The inner cylinder 2 is fixed on the brackets 3, and the axis of the inner cylinder 2 coincides with the axis of the outer cylinder 1. There are specifically four brackets 3, which are distributed in a cross.

A through hole is also opened on the bracket 3, so that the solution between the outer cylinder 1 and the inner cylinder 2 will not be subject to too much resistance when flowing during centrifugation and pouring.

A number of filter membranes 4 are installed on the side wall of the inner cylinder 2. The minimum distance between the lowest filter membrane 4 and the bottom of the inner cylinder 2 is 2/3 of the height of the inner cylinder 2. The solid is located at the bottom of the inner cylinder 2. When vibrating Part of the solid particles are dispersed into the liquid, but due to their large mass, they will not be suspended to a higher position, so that they will not contaminate the filter membrane 4 and affect the function of the filter membrane 4 . During centrifugation, the organic matter dissolved in the solution enters the outer cylinder 1 through the filter membrane 4 under the action of centrifugation, thereby realizing the filtration of the solution and obtaining an organic matter solution.

The inner wall of the inner cylinder 2 is also provided with one or more circles of inner convex edge 5, the inner convex edge 5 is located in the middle of the height of the inner cylinder 2, solid particles will be blocked by the inner convex edge 5 during centrifugation, and will not move up to The upper part of the liquid, so that the particles gather at the position below the inner convex edge 5, ensures the filtration efficiency and keeps the function of the filter membrane 4 unaffected.

After the soil and solution are poured into the inner cylinder 2, the port of the inner cylinder 2 needs to be covered with a sealing cover 6. There is a cylindrical inner convex edge 5 on the sealing cover 6, and the diameter of the cylinder is slightly larger than the inner wall of the inner cylinder 2. Diameter, so that it can seal the inner cylinder 2 port. After the sealing cover 6 is covered, when centrifuging and pouring the solution, the solution in the inner cylinder 2 cannot directly enter the outer cylinder 1 or be poured out. 1 Pour out the device, which can effectively prevent the filtered organic solution from being polluted by the unfiltered solution.

Both the inner cylinder 2 and the outer cylinder 1 are U-shaped cylinders with concave bottoms, and the particles in the solution will settle down and gather at the bottom.

The filter membrane 4 is made of hydrophilic polyethersulfone (PES) filter membrane, and the inner cylinder 2, outer cylinder 1 and bracket 3 are made of polytetrafluoroethylene.

Claims (7)

1. a kind of dissolved organic matter extracts integrated apparatus, characterized in that including outer cylinder, inner cylinder, filter membrane, bracket and Sealing cover；The inner cylinder is located at the inside of the outer cylinder, and the bracket is connected between the outer cylinder and the inner cylinder；Described Several circular holes are provided on the barrel of inner cylinder, the filter membrane is set at the circular hole on the inner cylinder；On the barrel of the inner cylinder It is additionally provided with interior convex edge, the interior convex edge is located at the middle position of the inner cylinder, and the circular hole is opened in the internal barrel above interior convex edge On wall.

2. dissolved organic matter according to claim 1 extracts integrated apparatus, which is characterized in that in the bracket On be provided with several through-holes.

3. dissolved organic matter according to claim 1 extracts integrated apparatus, which is characterized in that position is minimum Minimum range between the circular hole and the cylinder bottom of the inner cylinder is about high 2/3 of the internal barrel.

4. dissolved organic matter according to claim 1 extracts integrated apparatus, which is characterized in that the bracket number Amount is no less than two and is uniformly distributed around the axis of the outer cylinder.

5. dissolved organic matter according to claim 1 extracts integrated apparatus, which is characterized in that the outer cylinder and The inner cylinder is all bottom to recessed U-shaped tube, and the axis of the axis of the outer cylinder and the inner cylinder is overlapped.

6. dissolved organic matter according to claim 1 extracts integrated apparatus, which is characterized in that the sealing cover On have one section of raised cylinder, the diameter of the cylinder is slightly larger than the inner wall radius of the inner cylinder, and allowing it to will be described interior The port sealing of cylinder.

7. dissolved organic matter according to claim 1 extracts integrated apparatus, which is characterized in that the filter membrane is Hydrophilic polyethersulfone (PES) filter membrane.