阅读说明：本技术 一种土壤碳酸盐含量测定装置 (Soil carbonate content measurement device ) 是由 陈洪云 刘俊建 于 2019-10-03 设计创作，主要内容包括：本发明公开一种土壤碳酸盐含量测定装置,涉及土壤研究技术领域,包括U型管和进气管,U型管包括依次连接的第一测量管、连通管和第二测量管,进气管与第一测量管的上端连通,第一测量管上沿高度方向设置有多个刻度线,各刻度线一侧标示有刻度值,第二测量管的侧面设置有排水管,最上端的刻度线与排水管位于同一水平面上。本发明提供的土壤碳酸盐含量测定装置结构简单,操作方便,实现快速准确测定,成本低廉。(The invention discloses a soil carbonate content measuring device, which relates to the technical field of soil research and comprises a U-shaped pipe and an air inlet pipe, wherein the U-shaped pipe comprises a first measuring pipe, a communicating pipe and a second measuring pipe which are sequentially connected, the air inlet pipe is communicated with the upper end of the first measuring pipe, a plurality of scale marks are arranged on the first measuring pipe along the height direction, scale values are marked on one side of each scale mark, a drain pipe is arranged on the side surface of the second measuring pipe, and the scale mark at the uppermost end and the drain pipe are positioned on the same horizontal plane. The soil carbonate content measuring device provided by the invention has the advantages of simple structure, convenience in operation, realization of rapid and accurate measurement and low cost.)

1. The utility model provides a soil carbonate assay device, its characterized in that, includes U type pipe and intake pipe, the U type pipe is surveyed buret including the first survey buret that connects gradually, communicating pipe and second, the intake pipe with the upper end intercommunication of first survey buret, be provided with a plurality of scale marks along direction of height on the first survey buret, each scale mark one side has marked the scale interval, the side that the second surveyed the buret is provided with the drain pipe, the top the scale mark with the drain pipe is located same horizontal plane.

2. The soil carbonate assay device of claim 1, further comprising a water injection tube disposed at an upper end of the second measurement tube, the water injection tube communicating with the second measurement tube.

3. The soil carbonate content determination device according to claim 2, wherein the water injection pipe has an inner diameter larger than an inner diameter of the second measurement pipe.

4. The soil carbonate content measuring device according to claim 1, wherein the communicating pipe is horizontally disposed, the first measuring pipe and the communicating pipe are perpendicular to each other, the second measuring pipe and the communicating pipe are perpendicular to each other, and the drain pipe is perpendicular to the second measuring pipe.

5. The soil carbonate content determination device according to claim 1, wherein the inner diameter of the first measurement pipe is larger than the inner diameter of the second measurement pipe.

6. The soil carbonate content measuring device according to claim 1, wherein the air inlet pipe comprises a vertical pipe and a horizontal pipe which are communicated, the vertical pipe being communicated with an upper end of the first measuring pipe.

7. The soil carbonate content measuring device according to claim 6, wherein the horizontal tube is provided with a protrusion.

8. The soil carbonate content measuring device according to claim 2, wherein the intake pipe, the first measuring pipe, the communicating pipe, the second measuring pipe, the drain pipe, and the water injection pipe are of an integrated structure.

Technical Field

The invention relates to the technical field of soil research, in particular to a device for measuring the content of carbonate in soil.

Background

The existing methods for measuring the content of carbonate in soil generally comprise a titration method and an air-measuring method. The titration method is that carbonate is alkaline in the state of aqueous solution, and is colorless under the condition of adding phenolphthalein reagent, under the premise of knowing hydrochloric acid concentration, a hydrochloric acid reagent is dripped by a standard burette, pink is displayed at the beginning of a test solution, hydrochloric acid is stopped dripping, and the total hydrochloric acid dripping amount is calculated, so that the content of the carbonate is calculated according to the actual amount of the hydrochloric acid. The method is simple and easy to operate, but in the hydrochloric acid titration process, the color change of the solution is limited by the reaction time of the reagent, so that the hysteresis quality appears, the amount of the hydrochloric acid titration reagent is increased, the human error is increased, and the result accuracy is not high. The gas method is to reversely estimate the content of carbonate in a sample according to the total gas quantity of the reaction of a carbonate sample and hydrochloric acid, and generally uses a professional testing instrument to perform testing calculation, but the purchasing cost of the professional instrument is high, so that the experimental determination has certain limitation.

Disclosure of Invention

In order to solve the technical problems, the invention provides the soil carbonate content measuring device which is simple in structure, convenient to operate, capable of realizing rapid and accurate measurement and low in cost.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a soil carbonate content measuring device which comprises a U-shaped pipe and an air inlet pipe, wherein the U-shaped pipe comprises a first measuring pipe, a communicating pipe and a second measuring pipe which are sequentially connected, the air inlet pipe is communicated with the upper end of the first measuring pipe, a plurality of scale marks are arranged on the first measuring pipe along the height direction, scale values are marked on one side of each scale mark, a drain pipe is arranged on the side surface of the second measuring pipe, and the scale mark at the uppermost end and the drain pipe are positioned on the same horizontal plane.

Preferably, still include the water injection pipe, the water injection pipe set up in the upper end of second survey buret, the water injection pipe with the second surveys buret intercommunication.

Preferably, the water injection pipe has an inner diameter larger than an inner diameter of the second measurement pipe.

Preferably, the communicating pipe is horizontally arranged, the first measuring pipe and the communicating pipe are perpendicular to each other, the second measuring pipe and the communicating pipe are perpendicular to each other, and the drain pipe and the second measuring pipe are perpendicular to each other.

Preferably, the inner diameter of the first measurement pipe is larger than the inner diameter of the second measurement pipe.

Preferably, the intake pipe includes a vertical pipe and a horizontal pipe communicating with each other, the vertical pipe communicating with an upper end of the first measurement pipe.

Preferably, the horizontal pipe is provided with a convex part.

Preferably, the intake pipe the first survey buret communicating pipe the second survey buret the drain pipe with the water injection pipe formula structure as an organic whole.

Compared with the prior art, the invention has the following technical effects:

the invention provides a soil carbonate content measuring device, wherein a U-shaped pipe comprises a first measuring pipe, a communicating pipe and a second measuring pipe which are sequentially connected, an air inlet pipe is communicated with the upper end of the first measuring pipe, a plurality of scale marks are arranged on the first measuring pipe along the height direction, scale values are marked on one side of each scale mark, a drain pipe is arranged on the side surface of the second measuring pipe, and the scale mark at the uppermost end and the drain pipe are positioned on the same horizontal plane. Injecting purified water through the second measuring tube to make the water level flush with the uppermost scale mark, allowing the gas generated in the reactor to enter the first measuring tube through the gas inlet pipe, allowing the water level to descend under the action of air pressure, discharging the liquid through the water discharge pipe, and reading the discharge amount of the liquid descending on the water level through scale values after no liquid is discharged, namely, the CO of the reaction carbonate₂And (4) calculating the content of carbonate in the soil subsequently. The measuring device is simple in structure, convenient to operate, capable of achieving rapid and accurate measurement and low in cost, and solves the problems that the conventional simple carbonate measuring method (such as a titration method) is large in error range and purchasing cost of professional measuring instruments and equipment is high.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a soil carbonate content measuring device provided by the invention.

Description of reference numerals: 1. a first measurement pipe; 2. a communicating pipe; 3. a second measurement pipe; 4. a drain pipe; 5. a water injection pipe; 6. an air inlet pipe; 7. a boss portion; 8. scale lines are marked.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a soil carbonate content measuring device which is simple in structure, convenient to operate, capable of achieving rapid and accurate measurement and low in cost.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1, the embodiment provides a soil carbonate assay device, including U type pipe and intake pipe 6, the U type pipe is including the first survey buret 1 that connects gradually, 2 and second survey buret 3 communicating pipe, intake pipe 6 communicates with the upper end of first survey buret 1, be provided with a plurality of scale marks 8 along the direction of height on the first survey buret 1, 8 one side of each scale mark are marked with the scale interval, the side of second survey buret 3 is provided with drain pipe 4, drain pipe 4 is connected with a silica gel soft pipe, the scale mark 8 and the drain pipe 4 of the top are located same horizontal plane.

Still include water injection pipe 5 in this embodiment, water injection pipe 5 sets up in the upper end of surveying buret 3 for the second, and water injection pipe 5 and second survey buret 3 intercommunication. In order to avoid splashing of water during the water injection and to make the water injection easier to handle, the inner diameter of the water injection pipe 5 is made larger than the inner diameter of the second measuring pipe 3.

Specifically, 2 horizontal settings communicating pipe, first survey buret 1 and 2 mutually perpendicular communicating pipes, the second is surveyed buret 3 and 2 mutually perpendicular communicating pipes, and 3 mutually perpendicular are surveyed buret to drain pipe 4 and second. In this embodiment, the inner diameter of the first measuring tube 1 is larger than the inner diameter of the second measuring tube 3.

Specifically, the intake pipe 6 includes a vertical pipe and a horizontal pipe communicating with each other, the vertical pipe communicating with the upper end of the first measurement pipe 1. The horizontal tube is connected with a reactor through a silica gel hose, and a sample in the reactor reacts with acid to generate CO₂Due to the gas volatilized from the reactorHave certain sour steam, make sour steam buffer and enrichment at bellying 7 through set up bellying 7 on the horizontal pipe, and then avoid sour steam to get into in first survey pipe 1.

In this embodiment, intake pipe 6, first survey buret 1, communicating pipe 2, second survey buret 3, drain pipe 4 and water injection pipe 5 formula structure as an organic whole, and be the glass material, and then effectively ensure gaseous seal in the carbonate reaction process.

The specific using process is as follows: inject the pure water through water injection pipe 5, make the surface of water flush with the scale mark 8 of the top "0" milliliter scale mark promptly, then, carry out sealing connection with reactor and intake pipe 6 through the silica gel hose, start the reaction process, gaseous entering is first surveyed in buret 1, under the effect of atmospheric pressure, the surface of water descends, water level difference appears, liquid via drain pipe 4 and the silica gel hose of being connected with drain pipe 4 discharge, treat no liquid discharge after, read the discharge amount of surface of water decline liquid through scale interval, CO for reaction carbonate promptly₂And the content of the carbonate in the soil can be calculated through a reaction formula of the carbonate and the hydrochloric acid.

Therefore, the soil carbonate content measuring device in the embodiment has the advantages of simple structure, convenience in operation, capability of realizing rapid and accurate measurement, low cost and capability of solving the problems of large error range and high purchasing cost of professional test instruments and equipment in the conventional simple carbonate test method (such as a titration method).

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.