Grinding tank for soil pollutant detection and operation method thereof
By designing a grinding jar with a multi-cavity structure, non-destructive transfer of samples and reduction of cross-contamination are achieved during soil pollutant detection, solving the problems of sample loss and contamination, and improving detection accuracy and efficiency.
Patent Information
- Application Number
- CN202511297244.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-11
- Publication Date
- 2025-12-12
AI Technical Summary
In the process of soil pollutant detection, samples are easily lost or contaminated when transferred to the extraction equipment after grinding, resulting in low accuracy and efficiency of the test results.
Design a multi-chamber grinding jar, comprising an upper chamber, a middle chamber, and a lower chamber, containing grinding balls, a metal sieve, and quartz sand, to achieve integrated grinding and extraction, reduce sample transfer, and improve equipment durability by using threaded connections and annular wear-resistant plates.
Reduce sample loss and cross-contamination, improve the accuracy and efficiency of test results, and extend the service life of equipment.
Smart Images
Figure CN121113627A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of grinding tanks, and particularly relates to a soil pollutant detection grinding tank and an operation method thereof. BACKGROUND
[0002] Soil, as a key component of the ecological system, plays an important role in material circulation and energy conversion, and its quality is directly related to ecological safety and human health.
[0003] However, with the rapid advancement of industrialization and urbanization, a large amount of heavy metals and organic pollutants enter the soil through wastewater discharge, atmospheric deposition and misuse of pesticides and fertilizers, causing soil pollution problems to become increasingly serious.
[0004] Due to the variety of soil pollutants and the complexity of their sources, as well as the hidden and persistent migration and transformation process in the soil, it is difficult to evaluate through direct observation, so laboratory detection becomes the core means for accurately identifying and quantifying soil pollutants and then formulating scientific management strategies.
[0005] Laboratory detection of soil pollutants generally first grinds the soil to be detected by a grinding device, then extracts the ground soil to be detected by an extraction device to obtain the detected pollutants in the soil, and then detects the obtained detected pollutants.
[0006] In the above process, the sample is easily lost or contaminated during the transfer of the ground detected soil to the extraction device, resulting in deviation of the detection results, low accuracy of the detection results and low detection efficiency.
[0007] In view of this, a soil pollutant detection grinding tank and an operation method thereof are designed to solve the above problems. SUMMARY
[0008] To solve the problems raised in the background, the application provides a soil pollutant detection grinding tank and an operation method thereof, which has the characteristics of reducing sample loss and cross-contamination rate, improving the accuracy of detection results and detection efficiency.
[0009] Another object of the application is to provide an operation method of a soil pollutant detection grinding tank.
[0010] In order to achieve the above object, the present application provides the following technical scheme: a kind of soil pollutant detection is ground jar, comprising: grinding jar body, the upper cavity, middle cavity and lower cavity are sequentially opened in the inside of the grinding jar body from top to bottom, the upper cavity top end is opened and is adapted to the chamfer according to the liquid inlet of extraction instrument, the upper cavity top end can be detachably connected with grinding jar cover, a plurality of grinding balls are arranged in the upper cavity, the middle cavity is communicated with the upper cavity and the cross section is smaller than the upper cavity and forms annular protrusion, metal screen is arranged in the inside of the middle cavity top end, metal screen is in abutment with annular protrusion, the bottom end of a plurality of grinding balls contacts metal screen, the lower cavity is communicated with the middle cavity and the cross section is larger than the middle cavity and forms annular recess, metal filter element and detachably connected metal plug are sequentially arranged in the inside of the lower cavity from top to bottom, metal filter element is in abututment with annular recess and metal plug, hexagonal screw hole is formed in the middle of the metal plug, the lower cavity bottom end is opened and is adapted to the chamfer according to the liquid outlet of extraction instrument.
[0011] Further, the detachable connection between the grinding jar cover and the grinding jar body and the detachable connection between the metal plug and the grinding jar body are screw connections.
[0012] Further, the grinding balls are stainless steel balls or porcelain balls, and the diameters of the plurality of grinding balls are different, and the diameters are 5mm-90mm.
[0013] Further, annular wear plate is embedded and fixed in the inner wall of the upper cavity, and the plurality of grinding balls are located in the inside of the annular wear plate.
[0014] Further, the annular wear plate is made of one or more of stainless steel, hard alloy, silicon nitride, silicon carbide, zirconia, chromium steel / high manganese steel and high aluminum.
[0015] Further, the inside of the middle cavity is filled with a plurality of quartz sand below the metal screen, the particle size of the quartz sand is greater than the mesh diameter of the metal screen and the filter hole diameter of the metal filter element, and the plurality of quartz sand is extruded to abut the annular protrusion of the metal screen to fix the metal screen.
[0016] The operation method of the soil pollutant detection grinding jar comprises the following steps:
[0017] S1: before grinding, hexagonal screwdriver is inserted into hexagonal screw hole, metal plug is rotated and taken out, metal filter element is taken out, metal screen is put in, a plurality of quartz sand is filled into the middle cavity, metal filter element is reset, and metal plug is rotated and reset;
[0018] S2: when grinding, the grinding jar cover is taken out by rotating, the soil to be ground is put into the upper cavity through the upper end opening of the upper cavity, the grinding jar cover is screwed tightly, the grinding jar is placed in the grinding equipment, the grinding equipment is started, the grinding jar body is shaken, and the several grinding balls in the upper cavity collide under the action of centrifugal force to grind the soil in the upper cavity;
[0019] S3: after grinding, the grinding jar is taken out and transferred to the extraction equipment, the grinding jar cover is taken out by rotating, the extraction instrument liquid inlet sealing ring is connected with the top end chamfer position of the upper cavity, the extraction instrument liquid outlet sealing ring is connected with the bottom end chamfer position of the lower cavity, the extraction equipment is started, the extraction liquid enters the upper cavity top end opening, contacts the ground soil in the upper cavity for extraction, and the extracted extraction liquid flows out from the hexagonal screw hole under the set pressure through the metal screen, quartz sand and metal filter element.
[0020] Compared with the prior art, the beneficial effects of the present application are:
[0021] 1、The jar body can be used as a grinding jar of a grinding equipment for grinding and as an extraction jar of an extraction equipment for extraction, that is, the present application realizes combination, and the soil after grinding does not need to be transferred to the extraction instrument, compared with the prior art, the present application can reduce sample loss and cross contamination rate, and improve the accuracy and detection efficiency of the detection result.
[0022] 2、The present application fills the quartz sand, and the metal screen abuts against the annular protrusion to fix the metal screen, so that the impact force borne by the metal screen can be reduced, the probability of deformation of the metal screen can be reduced, and the service life of the metal screen can be prolonged.
[0023] 3、The present application can avoid the problems of wear and blockage caused by direct contact of the soil with the metal filter element, prolong the service life, and improve the extraction efficiency. DETAILED DESCRIPTION
[0024] Figure 1 It is a perspective view of the present application;
[0025] Figure 2 It is a vertical sectional view of the present application;
[0026] Figure 3 It is an enlarged view of A in the present application; Figure 2
[0027] In the figure: 1, grinding jar body; 2, grinding jar cover; 3, upper cavity; 4, hexagonal screw hole; 5, metal plug; 6, metal filter element; 7, lower cavity; 8, middle cavity; 9, metal screen; 10, grinding ball; 11, annular protrusion;
[0028] 101, annular wear plate;
[0029] 201, quartz sand. DETAILED DESCRIPTION
[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.
[0031] The present application provides the following technical solutions: a soil pollutant detection grinding tank, comprising: a grinding tank body 1, a upper cavity 3, a middle cavity 8 and a lower cavity 7 are sequentially arranged from top to bottom in the grinding tank body 1, the upper cavity 3 is open at the top end and is chamfered according to the liquid inlet of the extraction instrument, the upper cavity 3 is detachably connected with a grinding tank cover 2 at the top end, a plurality of grinding balls 10 are arranged in the upper cavity 3, the middle cavity 8 is communicated with the upper cavity 3 and has a ring-shaped protrusion 11 formed by the cross section smaller than that of the upper cavity 3, a metal screen 9 is arranged at the top end in the middle cavity 8, the metal screen 9 abuts against the ring-shaped protrusion 11, the bottom ends of the plurality of grinding balls 10 contact the metal screen 9, the lower cavity 7 is communicated with the middle cavity 8 and has a ring-shaped recess formed by the cross section larger than that of the middle cavity 8, a metal filter element 6 and a metal plug 5 detachably connected are sequentially arranged from top to bottom in the lower cavity 7, the metal filter element 6 abuts against the ring-shaped recess and the metal plug 5, a hexagonal screw hole 4 is formed in the middle of the metal plug 5, and the lower cavity 7 is open at the bottom end and is chamfered according to the liquid outlet of the extraction instrument.
[0032] Specifically, the detachable connection between the grinding tank cover 2 and the grinding tank body 1 and the detachable connection between the metal plug 5 and the grinding tank body 1 are both screw connections.
[0033] Specifically, the grinding balls 10 are stainless steel balls or porcelain balls, and the diameters of the plurality of grinding balls 10 are all different, and the diameters are 5mm-90mm.
[0034] The plurality of grinding balls 10 are reasonably mixed according to the proportion, so that the impact force is enhanced by the large balls and the grinding contact area is increased by the small balls, and the large balls and the small balls are gradually matched with each other, so that the grinding effect of the grinding balls 10 is fully exerted and the grinding efficiency is greatly improved.
[0035] Specifically, a ring-shaped wear plate 101 is embedded and fixed in the inner wall of the upper cavity 3, and the plurality of grinding balls 10 are located in the ring-shaped wear plate 101.
[0036] The ring-shaped wear plate 101 can reduce the wear between the grinding balls 10 and the grinding tank body 1 and improve the durability.
[0037] Specifically, the ring-shaped wear plate 101 is made of one or more of stainless steel, hard alloy, silicon nitride, silicon carbide, zirconia, chromium steel / high manganese steel and high aluminum.
[0038] Specifically, the inside of the middle cavity 8 is filled with a plurality of quartz sand 201 below the metal screen 9, the particle size of the quartz sand 201 is greater than the diameter of the screen hole of the metal screen 9 and the diameter of the filter hole of the metal filter 6, and the plurality of quartz sand 201 is filled and extruded to abut the annular protrusion 11 to fix the metal screen 9.
[0039] The plurality of quartz sand 201 can avoid the problem of direct contact between the soil and the metal filter 6 causing wear and blockage, prolong the service life, and improve the extraction efficiency.
[0040] An operating method of a soil pollutant detection grinding tank, comprising the following steps:
[0041] S1: Before grinding, the hexagonal screwdriver is inserted into the hexagonal screw hole 4, the metal plug 5 is rotated and taken out, the metal filter 6 is taken out, the metal screen 9 is put in, the middle cavity 8 is filled with a plurality of quartz sand 201, the metal filter 6 is reset, and the metal plug 5 is rotated and reset;
[0042] S2: During grinding, the grinding tank cover 2 is rotated and taken out, the soil to be ground is put into the upper cavity 3 through the top opening of the upper cavity 3, the grinding tank cover 2 is rotated and tightened, the grinding tank is placed in the grinding equipment, the grinding equipment is started, and the grinding tank body 1 is shaken, a plurality of grinding balls 10 in the upper cavity 3 collide under the action of centrifugal force to grind the soil in the upper cavity 3;
[0043] S3: After grinding, the grinding tank is taken out and transferred to the extraction equipment, the grinding tank cover 2 is rotated and taken out, the extraction instrument liquid inlet sealing ring is connected with the top chamfer position of the upper cavity 3, the extraction instrument liquid outlet sealing ring is connected with the bottom chamfer position of the lower cavity 7, the extraction equipment is started, the extraction liquid enters from the top opening of the upper cavity 3, contacts with the ground soil in the upper cavity 3 for extraction, and the extracted extraction liquid flows out from the hexagonal screw hole 4 under the action of the metal screen 9, the quartz sand 201 and the metal filter 6 under the set pressure.
[0044] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A grinding jar for detecting soil pollutants, characterized in that, include: The grinding tank (1) has an upper cavity (3), a middle cavity (8), and a lower cavity (7) arranged sequentially from top to bottom inside. The top of the upper cavity (3) is open and has a chamfered to fit the liquid inlet of the extraction instrument. The top of the upper cavity (3) is detachably connected to a grinding tank cover (2). Several grinding balls (10) are arranged inside the upper cavity (3). The middle cavity (8) is connected to the upper cavity (3) and has a cross-section smaller than that of the upper cavity (3), forming an annular protrusion (11). A metal screen (9) is arranged at the top of the middle cavity (8). The metal screen (9) abuts against the annular protrusion (11), and the bottom ends of several grinding balls (10) contact the metal screen (9). The lower cavity (7) is connected to the middle cavity (8) and its cross-section is larger than that of the middle cavity (8), forming an annular groove. The lower cavity (7) is provided with a metal filter element (6) and a metal plug (5) that can be detachably connected from top to bottom. The metal filter element (6) abuts against the annular groove and the metal plug (5). The metal plug (5) has a hexagonal screw hole (4) in the middle. The bottom end of the lower cavity (7) is open and has an adaptive chamfer according to the liquid outlet of the extraction instrument.
2. The grinding jar for soil pollutant detection according to claim 1, characterized in that: The detachable connection between the grinding tank cover (2) and the grinding tank body (1) and the detachable connection between the metal plug (5) and the grinding tank body (1) are both threaded connections.
3. The grinding jar for soil pollutant detection according to claim 2, characterized in that: The grinding ball (10) is a stainless steel metal ball or a ceramic ball. The diameter of the grinding balls (10) is different for each ball, and the diameter is 5mm-90mm.
4. A grinding jar for soil pollutant detection according to claim 3, characterized in that: The upper cavity (3) has an annular wear-resistant plate (101) embedded and fixed in the inner wall, and several grinding balls (10) are located inside the annular wear-resistant plate (101).
5. A grinding jar for soil pollutant detection according to claim 4, characterized in that: The annular wear-resistant plate (101) is made of one or more of the following materials: stainless steel, cemented carbide, silicon nitride, silicon carbide, zirconium oxide, chromium steel / high manganese steel, and high aluminum.
6. A grinding jar for soil pollutant detection according to claim 5, characterized in that: The cavity (8) is filled with a number of quartz sands (201) below the metal screen (9). The particle size of the quartz sands (201) is larger than the sieve hole diameter of the metal screen (9) and the filter hole diameter of the metal filter element (6). The filling of quartz sands (201) compresses the metal screen (9) to abut against the annular protrusion (11) to fix the metal screen (9).
7. The operating method of the grinding jar for soil pollutant detection according to claim 6, characterized in that, Includes the following steps: S1: Before grinding, insert a hex screwdriver into the hex screw hole (4), rotate to remove the metal plug (5), remove the metal filter element (6), put in the metal screen (9), fill the middle cavity (8) with some quartz sand (201), reset the metal filter element (6), and rotate to reset the metal plug (5). S2: During grinding, rotate and remove the grinding tank cover (2), put the soil to be ground into the upper cavity (3) through the top opening of the upper cavity (3), rotate and tighten the grinding tank cover (2), place the grinding tank into the grinding equipment, start the grinding equipment, shake the grinding tank (1), and several grinding balls (10) in the upper cavity (3) collide under the action of centrifugal force to grind the soil in the upper cavity (3); S3: After grinding, take out the grinding tank and transfer it to the extraction equipment. Rotate to remove the grinding tank cover (2). Connect the sealing ring of the inlet of the extraction instrument to the top chamfer of the upper cavity (3). Connect the sealing ring of the outlet of the extraction instrument to the bottom chamfer of the lower cavity (7). Start the extraction equipment. The extractant enters from the top opening of the upper cavity (3) and comes into contact with the ground soil in the upper cavity (3) for extraction. The extracted extractant passes through the metal screen (9), quartz sand (201) and metal filter (6) under the set pressure and flows out from the hexagonal screw hole (4).