CN110530861A - A kind of measuring method of soil acidity or alkalinity - Google Patents

Abstract

The invention discloses a method for measuring soil pH and relates to the technical field of soil pH detection. The invention comprises a quantitative distribution cylinder, a mixing and separation cylinder, a color development cylinder, and an end cap which are threaded sequentially from top to bottom; a cylindrical through hole for quantitatively storing soil is opened on the upper surface of the quantitative distribution cylinder; The cylindrical cavity for storing the extraction reaction solution; the upper end of the quantitative distribution cylinder is fixed with an internal thread connection cylinder; the internal thread connection cylinder is threaded with a plastic water cup for storing the extraction reaction solution; the upper surface of the quantitative distribution cylinder is located inside the internal thread connection cylinder respectively A liquid inlet pipe and an exhaust pipe communicated with the cylindrical cavity are fixed. The invention combines the designed quantitative distribution cylinder, mixing and separation cylinder, color development cylinder, plastic water cup with the second valve stem assembly and the first valve stem assembly. The structure is reasonable and simple, the operation is quick and convenient, and the field soil acid-base detection is improved. It solves the complicated problem of the existing soil pH detection process.

Description

A kind of measuring method of soil acidity and alkalinity

technical field

The invention belongs to the technical field of soil pH detection, in particular to a method for measuring soil pH.

Background technique

Acidification of planting soil is one of the most critical issues affecting fruit quality at present, and the pH of soil affects the growth of crops. The usual method of measuring farmland pH is to take a part of the soil sample to a special chemical laboratory for sampling, put a certain proportion of soil and solution in the test tube, drop in the ph measuring liquid or ph test paper for measurement, and measure the soil acidity under the existing technical conditions. It can be roughly tested in the field or carried out in a professional laboratory. The existing detection and determination methods have a complicated process in actual operation, and the properties of the soil will change slightly during the transfer process, resulting in inaccurate detection and a large detection time span, which is not conducive to timely discovery of acid in the field. Alkali changes should be dealt with in a timely manner, so a rapid detection method is needed for rapid on-site pH detection.

Contents of the invention

The purpose of the present invention is to provide a method for measuring soil pH, through the combination of the designed quantitative distribution cylinder, mixing and separation cylinder, color development cylinder, plastic water cup and the second valve stem assembly and the first valve stem assembly, the structure is reasonable and simple, The operation is quick and convenient, and the quickness of soil acid-base detection in the field is improved, which solves the complicated problem of the existing soil pH detection process.

In order to solve the problems of the technologies described above, the present invention is achieved through the following technical solutions:

The invention is a method for measuring soil pH, which comprises a quantitative distribution cylinder, a mixing and separation cylinder, a color development cylinder, and an end cap which are threaded sequentially from top to bottom; the upper surface of the quantitative distribution cylinder is provided with a cylinder for quantitative storage of soil Through holes; the inside of the quantitative distribution cylinder is provided with a cylindrical cavity for quantitatively temporarily storing the extraction reaction solution; the upper end of the quantitative distribution cylinder is fixed with an internal thread connection cylinder; plastic water cup; the upper surface of the quantitative distribution cylinder and the inner threaded connection cylinder are respectively fixed with a liquid inlet pipe and an exhaust pipe connected with the cylindrical cavity; two symmetrically arranged second A rectangular notch; the first rectangular notch on the side away from the cylindrical through hole has a first rectangular separation groove; the first rectangular separation groove communicates with the liquid inlet pipe; a second rectangular separation groove is opened between the two cylindrical through holes A rectangular separation through hole; the lower end of the quantitative distribution cylinder is provided with a diversion flow hole communicating with the cylindrical cavity; the cylindrical through holes are all connected to the diversion flow hole; the inner wall of the first rectangular separation groove is separated from the first rectangular The first valve rod assembly is slidably fitted between the inner walls of the through holes; the lower end of the mixing and separating cylinder is provided with a filter disk; the quantitative distribution cylinder is a cylindrical structure; the upper inner wall of the color developing cylinder is fixed with a funnel-shaped lower end surface on the upper end surface A flat round cover; a liquid inlet hole is opened in the middle of the round cover; two second rectangular notches are symmetrically arranged on the side of the color developing cylinder; a second rectangular notch is opened between the two second rectangular notches. Rectangular separation through hole; the inner wall of the second rectangular separation through hole is slidably fitted with a second valve stem assembly; the side of the color development cylinder is partially arranged along the axial direction with a colorimetric liquid cavity;

Including the following detection process:

To fill the material, push the first valve stem assembly to the left limit and the second valve stem assembly to the right limit, fill the through hole of the cylinder with the soil to be tested, and under the joint action of the exhaust pipe and the liquid inlet pipe, the cylinder will The cavity is filled with extraction reaction solution;

Mixing, after filling the materials above, push the first valve stem assembly to the right limit and the second valve stem assembly to the left limit. In this case, the mixing separation cylinder and the color development cylinder are blocked and disconnected, and the cylinder The through hole and the diversion flow hole are connected, and the soil and the extraction reaction solution are respectively collected into the mixing and separating cylinder. After the collection is completed, push the first valve stem assembly to the left limit, and then manually shake and mix;

Filter into the color development cylinder, after the mixing is completed, push the second valve stem assembly to the right limit, the mixed solution will flow into the color development cylinder below after being filtered through the filter disc;

For color contrast, compare the color of the liquid in the colorimetric tube with the colored liquid in the colorimetric liquid cavity vertically and evenly distributed on the left after standing for one minute, find the closest colorimetric liquid cavity and read Take the marked pH value on it;

Cleaning, after one use is completed, rotate and disassemble the mixing and separating cylinder from the lower end of the quantitative distribution cylinder, clean the residue and residue in the mixing and separating cylinder, rotate and disassemble the end cap at the lower end of the color developing cylinder to clean the liquid in the color developing cylinder Clean up, install it back to its original position after cleaning, and wait for the next use.

Further, the inner wall of the mixing and separating cylinder and the upper and lower sides of the filter disc are respectively screw-connected with a metal grid disc and a plastic grid disc; the material of the filter disc is absorbent cotton or synthetic fiber filter cloth.

Further, the first valve stem assembly includes a first rectangular blocking plate slidingly fitted with the first rectangular partition through hole, a second rectangular blocking plate slidingly fitted with the first rectangular partition slot; the first rectangular blocking plate The blocking plate is connected with the right end of the second rectangular blocking plate through the first rectangular control plate; the other end of the first rectangular blocking plate is fixed with a second rectangular control plate; The first conduction hole and the second conduction hole that are connected to the guide flow hole and the cylindrical through hole; the third conduction hole communicated with the liquid inlet pipe is opened on the upper surface of the second rectangular blocking plate, and the first valve stem When the component is pushed to the left limit position, the liquid inlet pipe is connected, and the extraction reaction liquid in the plastic cup is used to flow into the cylindrical cavity; when the first valve stem component is pushed to the right limit position, the diversion hole and the cylindrical through hole are respectively connected. It is used for the extraction reaction liquid in the cylindrical cavity and the soil drop in the cylindrical through hole.

Further, the second valve stem assembly includes a third rectangular blocking plate, the upper surface of the third rectangular blocking plate is slidingly fitted with the lower surface of the round cover; The fourth through hole connected with the hole is used to transfer the mixed flow of the mixing and separating cylinder to the color developing cylinder; the two ends of the third rectangular blocking plate are respectively fixed with a third rectangular control plate.

The present invention has the following beneficial effects:

1. The present invention combines the designed quantitative distribution cylinder, mixing and separation cylinder, color development cylinder and plastic water cup into a device for quickly detecting soil pH in the field, and sets different pH values in the colorimetric liquid cavity set on the side wall of the color development cylinder The contrast value and the liquid of the corresponding color are convenient and fast to read the pH value of the soil, convenient and fast to collect the pH value of a large area of soil, and quickly judge the acid-base environment of the soil.

2. The quantitative distribution cylinder, mixing separation cylinder, color development cylinder, plastic water cup and the second valve stem assembly and the first valve stem assembly designed by the present invention are used in combination. The structure is reasonable and simple, the operation is quick and convenient, and the efficiency of field soil acid-base detection is improved. quickness.

Of course, any product implementing the present invention does not necessarily need to achieve all the above-mentioned advantages at the same time.

Description of drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the accompanying drawings that are required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. Those of ordinary skill in the art can also obtain other drawings based on these drawings without any creative effort.

Fig. 1 is a structural representation of the first valve stem assembly pushed to the left limit and the second valve stem assembly pushed to the right limit in a measuring device for soil pH of the present invention;

Fig. 2 is a structural schematic diagram of the first valve stem assembly pushed to the right limit and the second valve stem assembly pushed to the left limit in a measuring device for soil pH of the present invention;

Fig. 3 is a structural schematic diagram of the present invention after removing the second valve stem assembly and the first valve stem assembly;

Fig. 4 is the structural representation of the second stem assembly;

Figure 5 is a schematic structural view of the first valve stem assembly;

In the accompanying drawings, the list of parts represented by each label is as follows:

1-quantitative distribution cylinder, 2-mixing separation cylinder, 3-color development cylinder, 4-plastic water cup, 5-second valve stem assembly, 6-first valve stem assembly, 7-exhaust pipe, 8-liquid inlet pipe , 9-metal grid disc, 10-filter disc, 11-plastic grid disc, 12-end cap, 101-cylindrical through hole, 102-first rectangular separation groove, 103-cylindrical cavity, 104- The first rectangular separation through hole, 105-guide flow hole, 106-the first rectangular notch, 107-internal thread connecting cylinder, 301-round cover, 302-inlet hole, 303-the second rectangular separation through hole, 304- The second rectangular notch, 305-colorimetric liquid cavity, 501-the third rectangular blocking plate, 502-the fourth via hole, 503-the third rectangular control plate, 601-the first rectangular blocking plate, 602- The second rectangular blocking plate, 603 - the first via hole, 604 - the second via hole, 605 - the third via hole, 606 - the first rectangular control plate, 607 - the second rectangular control plate.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Please refer to shown in Figure 1-5, the present invention is a kind of measuring method of soil pH, the quantitative dispensing cylinder 1, the mixing and separating cylinder 2, the color developing cylinder 3, the end cap 12 that are threaded sequentially from top to bottom;

The upper surface of the quantitative distribution cylinder 1 is provided with a cylindrical through hole 101 for quantitatively storing soil, and the quantitative distribution cylinder 1 is a cylindrical structure; the inside of the quantitative distribution cylinder 1 is provided with a cylindrical cavity 103 for quantitatively temporarily storing the extraction reaction solution; the quantitative distribution cylinder 1 The upper end is fixed with an internally threaded connecting cylinder 107; the internally threaded connecting cylinder 107 is threadedly connected with a plastic water cup 4 for storing the extraction reaction liquid, and the storage and extraction reaction liquid includes a solution and a pH measurement liquid; the upper surface of the quantitative distribution cylinder 1 is located on the internal thread The inner side of the connecting cylinder 107 is respectively fixed with the liquid inlet pipe 8 and the exhaust pipe 7 communicating with the cylindrical cavity 103; there are two first rectangular notches 106 arranged symmetrically on the side of the quantitative distribution cylinder 1; The first rectangular notch 106 on the side has a first rectangular separation groove 102; the first rectangular separation groove 102 communicates with the liquid inlet pipe 8; the first rectangular separation through hole 104 is opened between the two cylindrical through holes 101; the quantitative distribution cylinder 1 The lower end is provided with a guide flow hole 105 communicating with the cylindrical cavity 103; the cylindrical through holes 101 are all connected with the guide flow hole 105; the inner wall of the first rectangular separation groove 102 is slidingly fitted with the inner wall of the first rectangular separation through hole 104. The valve rod assembly 6; the lower end of the mixing and separating cylinder 2 is provided with a filter disc 10, and the inner wall of the mixing and separating cylinder 2 and the upper and lower sides of the filtering disc 10 are threadedly connected with a metal grid disc 9 and a plastic grid disc 11 respectively; The sheet 10 is made of absorbent cotton; the volume of the cylindrical through hole 101 above the first valve stem assembly 6 is set in proportion to the volume of the cylindrical cavity 103;

The inner wall of the upper end of the color developing tube 3 is fixed with a round cover 301 with a funnel-shaped upper end surface and a flat lower end face; a liquid inlet hole 302 is opened in the middle of the round cover 301; two second rectangular notches 304 are symmetrically arranged on the side of the color developing tube 3 ; There is a second rectangular separation through-hole 303 between the two second rectangular notches 304; the inner wall of the second rectangular separation through-hole 303 is slidably fitted with the second valve stem assembly 5; the sides of the color developing tube 3 are arranged linearly and locally along the axial direction There are 13 colorimetric liquid chambers 305, the fifth one from bottom to top is the neutral pH value, and the number 7.0 is engraved on the surface, each colorimetric liquid upwards and downwards The ph value of the chamber 305 is increased or decreased by 0.2 ph value, each colorimetric liquid chamber 305 is filled with a corresponding pH color developing liquid, and the corresponding number is engraved.

Wherein as shown in FIG. 5 , the first valve stem assembly 6 includes a first rectangular blocking plate 601 slidingly fitted with the first rectangular partitioned through hole 104 , a second rectangular blocking plate 602 slidingly fitted with the first rectangular partitioned groove 102 ; The first rectangular blocking plate 601 is connected to the right end of the second rectangular blocking plate 602 through the first rectangular control plate 606; the other end of the first rectangular blocking plate 601 is fixed with a second rectangular control plate 607; the first rectangular blocking plate The upper surface of 601 is respectively provided with a first conduction hole 603 and a second conduction hole 604 communicating with the guide flow hole 105 and the cylindrical through hole 101; The third conduction hole 605, when the first valve stem assembly 6 is pushed to the left limit, the liquid inlet pipe 8 conducts, and is used for the extraction reaction liquid in the plastic water cup 4 to flow into the cylindrical cavity 103; in the first valve stem assembly 6 When pushed to the right limit, the conduction flow hole 105 and the cylindrical through hole 101 are respectively connected, for the extraction reaction liquid in the cylindrical cavity 103 and the soil in the cylindrical through hole 101 to fall.

Wherein as shown in Figure 4, the second valve stem assembly 5 includes a third rectangular blocking plate 501, the upper surface of the third rectangular blocking plate 501 is slidingly fitted with the lower surface of the round cover 301; the upper surface of the third rectangular blocking plate 501 is opened There is a fourth conduction hole 502 for communicating with the liquid inlet hole 302, which is used to flow the mixture of the mixing and separating cylinder 2 into the color developing cylinder 3; the two ends of the third rectangular blocking plate 501 are respectively fixed with a third rectangular control plate 503.

The detection process is as follows:

To fill the material, push the first valve stem assembly 6 to the left limit, and the second valve stem assembly 5 to the right limit, fill the cylindrical through hole 101 with the soil to be tested, and fill the cylinder through hole 101 with the soil to be tested. The cylindrical chamber 103 is filled with the extraction reaction solution under the combined action of the cylindrical cavity;

Mixing, after the above-mentioned filling of materials is completed, the first valve stem assembly 6 is pushed to the right limit, and the second valve stem assembly 5 is pushed to the left limit. Open the connection, the cylindrical through hole 101 and the guide flow hole 105 are connected, and the soil and the extraction reaction solution are respectively collected in the mixing and separating cylinder 2. After the collection is completed, push the first valve stem assembly 6 to the left limit, and then manually Shake to mix;

Filter into the color development cylinder 3, push the second valve stem assembly 5 to the right limit after the mixing is completed, and the mixed liquid flows into the color development cylinder 3 below after filtering through the filter disk 10;

For color contrast, compare the color of the liquid in the colorimetric tube 3 with the colored liquid in the colorimetric liquid chamber 305 vertically and evenly distributed on the left side after standing for one minute, and find the closest colorimetric liquid chamber Body 305 and read the marked pH value on it;

Cleaning, after one use is completed, rotate and disassemble the mixing and separating cylinder 2 from the lower end of the quantitative dispensing cylinder 1, clean up the residue and residue in the mixing and separating cylinder 2, and rotate and disassemble the end cap 12 at the lower end of the color developing cylinder 3 for color development The liquid in the cylinder 3 is cleaned up, and after cleaning, it is installed back to its original position for next use.

In the description of this specification, descriptions with reference to the terms "one embodiment", "example", "specific example" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment of the present invention. In an embodiment or example. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are only to help illustrate the invention. The preferred embodiments are not exhaustive in all detail, nor are the inventions limited to specific embodiments described. Obviously, many modifications and variations can be made based on the contents of this specification. This description selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the art can well understand and utilize the present invention. The invention is to be limited only by the claims, along with their full scope and equivalents.

Claims (6)

1. A method for measuring soil pH, characterized in that: It includes a quantitative distribution cylinder (1), a mixing separation cylinder (2), a color development cylinder (3), and an end cap (12) that are threaded sequentially from top to bottom; The upper surface of the quantitative distribution cylinder (1) is provided with a cylindrical through hole (101) for quantitatively storing soil; the interior of the quantitative distribution cylinder (1) is provided with a cylindrical cavity (103) for quantitatively temporarily storing the extraction reaction solution; the The upper end of the quantitative distribution cylinder (1) is fixed with an internal thread connection cylinder (107); the internal thread connection cylinder (107) is threadedly connected with a plastic cup (4) for storing the extraction reaction solution; the quantitative distribution cylinder (1 ) on the upper surface of the internally threaded connecting cylinder (107) are respectively fixed with a liquid inlet pipe (8) and an exhaust pipe (7) communicating with the cylindrical cavity (103); There are two first rectangular notches (106) symmetrically arranged; the first rectangular notch (106) on the side away from the cylindrical through hole (101) has a first rectangular separation groove (102); the first rectangular The separation groove (102) communicates with the liquid inlet pipe (8); a first rectangular separation through hole (104) is provided between the two cylindrical through holes (101); The guide flow holes (105) connected to the cavity (103); the cylindrical through holes (101) are all connected to the guide flow holes (105); the inner wall of the first rectangular separation groove (102) is connected to the first rectangular separation A first valve stem assembly (6) is slidably fitted between the inner walls of the hole (104); The lower end of the mixing and separating cylinder (2) is provided with a filter disc (10); The inner wall of the upper end of the color developing cylinder (3) is fixed with a round cover (301) with a funnel-shaped lower end surface on the upper end face; a liquid inlet hole (302) is opened in the middle of the round cover (301); the color developing tube (3 ) has two second rectangular notches (304) symmetrically arranged on the side of the circumference; a second rectangular separation through hole (303) is provided between the two second rectangular notches (304); the second rectangular separation The inner wall of the through hole (303) is slidably fitted with a second valve stem assembly (5); the peripheral side of the color developing cylinder (3) is linearly and partially arranged in the axial direction with colorimetric liquid cavities (305). 2. the assay method of a kind of soil pH according to claim 1, is characterized in that, described quantitative distribution cylinder (1) is cylindrical structure. 3. the assay method of a kind of soil pH according to claim 1, it is characterized in that, described mixing separation cylinder (2) inner wall and be positioned at filter disc (10) upper and lower sides are respectively threaded with metal grid disc ( 9), a plastic grid disc (11); the filter disc (10) is made of absorbent cotton. 4. The measuring method of a kind of soil pH according to claim 1, characterized in that, the first valve stem assembly (6) comprises a first rectangular plugging slidably fitted with the first rectangular separation through hole (104) plate (601), a second rectangular blocking plate (602) slidingly fitted with the first rectangular separation groove (102); the first rectangular blocking plate (601) passes through the right end of the second rectangular blocking plate (602) The first rectangular control plate (606) is connected; the other end of the first rectangular blocking plate (601) is fixed with a second rectangular control plate (607); the upper surface of the first rectangular blocking plate (601) is respectively opened with The first conduction hole (603) and the second conduction hole (604) communicated with the conduction through hole (105) and the cylindrical through hole (101); the upper surface of the second rectangular blocking plate (602) has a The third through hole (605) communicated with the liquid inlet pipe (8). 5. the assay method of a kind of soil pH according to claim 1, is characterized in that, described second valve stem assembly (5) comprises the 3rd rectangular sealing plate (501); Described 3rd rectangular sealing plate The upper surface of (501) has a fourth conduction hole (502) for communicating with the liquid inlet hole (302); the third rectangular control plate (503) is respectively fixed at both ends of the third rectangular blocking plate (501) . 6. the assay method of a kind of soil pH according to claim 1, is characterized in that, also comprises following detection process: Fill the material, push the first valve stem assembly (6) to the left limit, push the second valve stem assembly (5) to the right limit, fill the soil to be tested into the cylindrical through hole (101), (7) and the cylinder chamber (103) are filled with the extraction reaction solution under the joint action of the liquid inlet pipe (8); Mixing, after the above-mentioned filling materials are completed, push the first valve stem assembly (6) to the right limit, and the second valve stem assembly (5) to the left limit, and then mix the separation cylinder (2) and the color development cylinder ( 3) are blocked and disconnected, the cylindrical through hole (101) and the diversion flow hole (105) are connected, and the soil and the extraction reaction solution are respectively collected in the mixing and separating cylinder (2). After the collection is completed, the Push the first valve stem assembly (6) to the left limit, then manually shake and mix; Filter into the color development cylinder (3), after the mixing is completed, push the second valve stem assembly (5) to the right limit position, the mixed liquid is filtered through the filter disk (10) and then flows to the color development cylinder (3) below middle; For color comparison, compare the color of the liquid in the color tube (3) with the colored liquid in the colorimetric liquid cavity (305) arranged vertically and uniformly on the left side after standing for one minute, and find the closest one. Colorimetric solution cavity (305) and read the marked pH value on it; Cleaning, after one use is completed, rotate and disassemble the mixing and separating cylinder (2) from the lower end of the quantitative dispensing cylinder (1), clean up the residue and residue in the mixing and separating cylinder (2), and rotate and disassemble the color developing cylinder (3) The end cap (12) at the lower end cleans the liquid in the color developing tube (3), and after cleaning, it is installed back to its original position for next use.