A digital high-precision mud viscosity tester and a testing method thereof

Abstract

The application discloses a digital high-precision mud viscosity tester and a testing method thereof, and belongs to the technical field of civil engineering. The tester comprises a supporting unit, a mixing unit arranged on the upper portion of the supporting unit and used for mixing and preparing mud, a funnel unit arranged on the supporting unit below the mixing unit, wherein the mixed and prepared mud flows into the funnel unit, and a measuring unit arranged directly below the funnel unit, wherein the mud flows into the measuring unit through the funnel unit, and the measuring unit is used for recording the time of the mud passing through the funnel unit. The application provides a reliable and convenient testing scheme for the research on drilling wall protection mud, landslides and debris flow, can realize the integration of the test process, reduces the measurement error caused by manual operation, is accurate in timing result, and is high in test precision.

Description

Technical Field

[0001] This invention belongs to the field of civil engineering technology, and more specifically, relates to a digital display high-precision mud viscosity tester and its testing method. Background Technology

[0002] In geotechnical engineering applications, drilling mud is commonly used to prevent borehole collapse during drilling in soil layers. Drilling mud is an effective and economical method. The quality of drilling mud has three main requirements: viscosity, specific gravity, and sand content. The viscosity of the mud is generally expressed by the time it takes for water to flow through a 500ml Marvin funnel. Normally, it takes 15 seconds for water to flow through a 500ml Marvin funnel. The standard TB10203-2002 specifies the following for the viscosity of drilling mud: 16-22 seconds for general strata and 19-28 seconds for loose and easily collapsible strata. The standard also specifies the viscosity of the mud after cleaning the borehole, which should be within the range of 17-20 seconds. Therefore, accurate measurement of mud viscosity is a very important indicator. If the mud viscosity is too low and the fluidity is too high, the wall-protecting force will be insufficient, leading to borehole collapse. If the mud viscosity is too high and the fluidity is too low, the resistance during mud preparation and transportation will be too great, increasing the load on the mud pumping device, easily causing blockage of the mud delivery pipeline, and increasing the time and cost of borehole clearing.

[0003] Mud viscosity plays a crucial role in the study of sliding mechanisms in loose soil and rock deposits, such as landslides and debris flows. Mud with different viscosities will cause different degrees of changes in the internal mechanical properties of loose soil and rock masses, thus having a significant impact on the initiation, sliding process and state of landslides and debris flows. Therefore, mud viscosity must be measured accurately.

[0004] Most mud viscometers currently in use have the following drawbacks:

[0005] (1) The test process is quite complicated and requires multiple human interventions, making it impossible to achieve automated integration of the test process;

[0006] (2) The test results are often affected by human factors, resulting in poor accuracy and large dispersion.

[0007] (3) Some mud viscometers have complex structures and are not convenient to carry, which cannot meet the requirements of rapid on-site testing. Summary of the Invention

[0008] To solve at least one of the above-mentioned technical problems, according to one aspect of the present invention, a digital display high-precision mud viscosity tester is provided, comprising:

[0009] A digital display high-precision mud viscosity tester includes:

[0010] Support unit;

[0011] The mixing unit, located on top of the support unit, is used for mixing and preparing the mud.

[0012] The funnel unit is arranged on the support unit below the mixing unit, and the mixed and prepared slurry is introduced into the funnel unit.

[0013] A measuring unit is arranged directly below the funnel unit. The mud flows into the measuring unit through the funnel unit, and the measuring unit is used to record the time it takes for the mud to pass through the funnel unit.

[0014] According to an embodiment of the digital display high-precision mud viscosity tester of the present invention, the support unit optionally includes:

[0015] A triangular base, which is in the shape of a triangular plate, is arranged on a horizontal surface. The three corners of the triangular base are movable triangular blocks, and the middle part of the triangular base is a fixed base block. The movable triangular blocks are hinged to the fixed base block, and the middle part of the fixed base block has a vertical mounting hole.

[0016] The support rod is arranged vertically, and its bottom end is connected to the mounting hole. The support rod is a multi-segment assembly type.

[0017] Optionally, in the digital display high-precision mud viscosity tester according to an embodiment of the present invention, the mixing unit includes:

[0018] A mixer, which is connected to one side of the upper end of a support rod via a bracket;

[0019] A mixing container is arranged below the mixer, and the mixing container is connected to the support rod via a bracket;

[0020] A hose is connected to the bottom of the mixing container, and a clamp is provided on the hose.

[0021] According to an embodiment of the digital display high-precision mud viscosity tester of the present invention, the funnel unit optionally includes:

[0022] The Marsh funnel is connected to the other side of the support frame by a bracket, and the height of the Marsh funnel is lower than the height of the mixing unit;

[0023] A pipe clamp, located at the top of the Marshall funnel, is used to secure the hose.

[0024] The filter screen is placed horizontally at the top of the Marshall funnel;

[0025] A rotary switch, located at the bottom of the Marshall funnel, is used to control whether the Marshall funnel discharges mud downwards.

[0026] According to an embodiment of the present invention, the digital display high-precision mud viscosity tester may optionally have a Martens funnel with a detachable upper and lower two-section structure.

[0027] According to an embodiment of the digital display high-precision mud viscosity tester of the present invention, optionally, the Martens funnel comprises:

[0028] Upper section of the funnel;

[0029] The tapered lower section is detachably connected to the bottom of the upper section of the funnel, and the tapered lower section is a hollow cone with an inner diameter that gradually decreases from top to bottom;

[0030] The volume of the Marsh funnel is 650 ml.

[0031] According to an embodiment of the digital display high-precision mud viscosity tester of the present invention, optionally, the Martens funnel comprises:

[0032] Upper section of the funnel;

[0033] The spherical lower section is detachably connected to the bottom of the upper section of the funnel, and the spherical lower section is a hollow sphere with an open top;

[0034] The volume of the Marsh funnel is 850 ml.

[0035] According to an embodiment of the present invention, the digital display high-precision mud viscosity tester may optionally include:

[0036] The measuring cup is positioned directly below the funnel unit;

[0037] A level bubble meter, which is horizontally arranged on the outer wall of the measuring cup, is used to detect whether the measuring cup is placed horizontally;

[0038] The timing mechanism includes a green indicator light, a red indicator light, and a digital timer. The green indicator light is fixed to the outer wall of the bottom of the measuring cup, and two wires extend horizontally into the measuring cup. The green indicator light illuminates when the liquid level reaches the height of the wires. The red indicator light is fixed to the outer wall of the top of the measuring cup, and two wires extend horizontally into the measuring cup. The red indicator light illuminates when the liquid level reaches the height of the wires. The digital timer is connected to the green and red indicator lights. The digital timer starts timing when the green indicator light illuminates and stops timing when the red indicator light illuminates.

[0039] The handle is fixed to the outer wall of the measuring cup.

[0040] According to an embodiment of the present invention, the digital display high-precision mud viscosity tester optionally includes a measuring cup with two volumes: 700ml and 900ml. For the 700ml measuring cup, a green indicator light is positioned at a height of 100ml and a red indicator light is positioned at a height of 600ml. For the 900ml measuring cup, a green indicator light is positioned at a height of 100ml and a red indicator light is positioned at a height of 800ml.

[0041] According to another aspect of the present invention, a high-precision mud viscosity testing method is provided, comprising the following steps:

[0042] 1. Assemble the tester;

[0043] 2. Prepare the mud slurry. Clamp the hose with a clamp, place the weighed air-dried clay and bentonite into the mixing container, turn on the mixer and mix thoroughly. Then add the calculated volume of water while mixing. After all the water has been added, run the mixer for another two minutes.

[0044] III. Begin measurement

[0045] For mud with a water content of less than or equal to 350%,

[0046] Select a Marsh funnel with a tapered lower section and a 700ml measuring cup. Release the clamp on the tubing, and the mud will enter the Marsh funnel after being filtered through the filter screen. Turn on the rotary switch, and the mud will flow into the measuring cup. The timing mechanism will record the time it takes for 500ml of mud to flow through.

[0047] For mud with a water content greater than 400%,

[0048] Select a spherical lower section of the Marsh funnel and a 900ml capacity measuring cup. Release the clamp of the tubing, and the mud will enter the Marsh funnel after being filtered through the filter screen. Turn on the rotary switch, and the mud will flow into the measuring cup. The timing mechanism records the time it takes for 700ml of mud to flow through.

[0049] After the measurement is completed, the mud is poured back into the mixer and the above process is repeated.

[0050] Beneficial effects

[0051] Compared with the prior art, the present invention has at least the following beneficial effects:

[0052] The digital display high-precision mud viscosity tester of this invention has a simple instrument structure, is easy to assemble and carry, and can be quickly assembled and tested in the laboratory or in the field. Combined with the method of this invention, it can achieve integrated testing procedures, reducing measurement errors caused by manual operation. Furthermore, this invention adds a customized combination method for the Martens funnel and mud viscosity measuring cup, allowing for different combination forms to be selected for mud of different viscosities, thereby improving testing accuracy. In addition, the mud timing of this invention transmits start and end information to the digital display timer through different indicator lights, ensuring accurate timing results. This invention provides a reliable and convenient testing solution for borehole wall protection mud, landslide, and debris flow research. Attached Figure Description

[0053] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0054] Figure 1 A schematic diagram of the digital display high-precision mud viscosity tester of the present invention is shown;

[0055] Figure 2 A schematic diagram of the triangular base of the present invention in its unfolded state is shown;

[0056] Figure 3 A schematic diagram of the folded state of the triangular base of the present invention is shown;

[0057] Figure 4 A schematic diagram of the mixer of the present invention is shown;

[0058] Figure 5 A schematic diagram of the Martens funnel structure of the present invention is shown;

[0059] Figure 6 A schematic diagram of the second type of Martens funnel structure of the present invention is shown;

[0060] Figure 7 A schematic diagram of the measuring cup of the present invention is shown;

[0061] Figure 8 A schematic diagram illustrating the working principle of the timing mechanism of the present invention is shown;

[0062] Figure label:

[0063] 1. Support unit; 10. Triangular base; 100. Movable triangular block; 101. Fixed base block; 102. Mounting hole; 11. Support rod;

[0064] 2. Mixing unit; 20. Mixer; 200. Drive unit; 201. Mixing switch; 202. Mixing paddle; 21. Mixing container; 22. Hoses;

[0065] 3. Funnel unit; 30. Marshall funnel; 300. Upper section of funnel; 301. Lower tapering section; 302. Lower spherical section; 31. Fixed pipe clamp; 32. Filter screen; 33. Rotary switch;

[0066] 4. Measuring unit; 40. Measuring cup; 41. Level bubble meter; 42. Timing mechanism; 420. Green indicator light; 4200. Switch one; 421. Red indicator light; 4210. Switch two; 422. Digital display timer; 4220. Spiral coil; 4221. Switch one; 4222. Switch two; 43. Handle. Detailed Implementation

[0067] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention.

[0068] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in the specification and claims of this patent application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, the terms “an” or “a” and similar terms do not indicate a limitation of quantity, but rather indicate the presence of at least one.

[0069] Example 1

[0070] The digital display high-precision mud viscosity tester of this embodiment, such as Figure 1 As shown, it includes a support unit 1, a mixing unit 2, a funnel unit 3, and a measuring unit 4.

[0071] The support unit 1 in this embodiment includes a triangular base 10 and a support rod 11. The triangular base 10 is a triangular plate-shaped structure. In this embodiment, the three corners of the triangular base 10 are movable triangular blocks 100, and the middle part is a fixed base block 101. Figure 2 As shown, the three movable triangular blocks 100 are hinged to the three sides of the fixed base block 101, allowing the movable triangular blocks 100 to rotate around the hinge points. When the testing instrument is not in use, the three movable triangular blocks 100 can be folded up as shown. Figure 3 As shown, the space occupied is reduced and it is easy to carry. An installation hole 102 is provided in the middle of the fixed base block 101. In this embodiment, the installation hole 102 is a threaded hole for installing the support rod 11. The support rod 11 is a vertically arranged rod-shaped structure. In this embodiment, the support rod 11 is composed of multiple rod segments assembled together. In this embodiment, two rod segments are connected by threaded engagement. The outer wall of the bottom end of the support rod 11 is threaded, which is used to fix the support rod 11 in conjunction with the installation hole 102.

[0072] The mixing unit 2 in this embodiment includes a mixer 20, a mixing container 21, and a hose 22. The mixer 20 is as follows: Figure 4As shown, in this embodiment, the mixer 20 is detachably connected to one side of the upper end of the support rod 11 via a bracket, and the height of the bracket on the support rod 11 is adjustable. In actual use, the height of the mixer 20 can be adjusted as needed. Furthermore, the mixer 20 in this embodiment includes a drive component 200, a foot switch 201, and a stirring paddle 202. The drive component 200 can be a structural component capable of outputting power, such as an electric motor. The bracket fixes the mixer 20 to the support rod 11 by connecting the drive component 200. The stirring switch 201 is located on one side of the drive component 200 and is used to control the drive component 200. The stirring paddle 202 is connected to the output end of the drive unit 200 to start and stop the mixer 200, and performs the stirring action. The mixing container 21 is arranged directly below the mixer 20. The mixing container 21 is also connected to the support rod 11 through the bracket. Similarly, the height position of this bracket on the support rod 11 is adjustable. The top of the mixing container 21 is open, the bottom surface is a tapered surface with a gradually decreasing diameter, and there is a hole in the middle of the bottom surface, which is connected to the hose 22. The hose 22 is equipped with a clamp. When mixing, the clamp closes the hose 22. After the mixing is completed and the mud is prepared, the clamp is opened and the mud enters the funnel unit 3 through the hose 22.

[0073] The funnel unit 3 in this embodiment includes a Marshall funnel 30, a fixing clamp 31, a filter screen 32, and a rotary switch 33. The Marshall funnel 30 is connected to the other side of the support frame 11 via a bracket. The height of this bracket on the support rod 11 is also adjustable. A fixing clamp 31 is provided at the top of the Marshall funnel 30 to fix a flexible hose 22. One end of the flexible hose 22 is connected to the bottom end of the mixing container 21, and the other end extends above the Marshall funnel 30, passes through the fixing clamp 31, and extends into the Marshall funnel 30. The filter screen 32 is located at the top inside the Marshall funnel 30. The slurry discharged from the flexible hose 22 is filtered by the filter screen 32 and then enters the Marshall funnel 30. The rotary switch 33 is located at the bottom outlet of the Marshall funnel 30 to control the slurry flowing out of the Marshall funnel 30 from a pipe with an inner diameter of 5 mm and a length of 100 mm. In this embodiment, the funnel unit 3 and the mixing unit 2 are arranged on both sides of the support rod 11 to ensure the balance and stability of the structure.

[0074] Furthermore, the Martens funnel 30 in this embodiment has two structural types:

[0075] Structural type one, such as Figure 5 As shown, the Marshall funnel 30 includes an upper section 300 and a tapered lower section 301. The top of the tapered lower section 301 is detachably connected to the bottom of the upper section 300 via a threaded structure. The tapered lower section 301 is a hollow cone with an inner diameter that gradually decreases from top to bottom. The volume of the Marshall funnel 30 of structure type 1 is 650ml, which is suitable for mud with a water content of less than or equal to 350%.

[0076] Structural type two, such as Figure 6As shown, the Marshall funnel 30 includes an upper section 300 and a spherical lower section 302. The top of the spherical lower section 301 is detachably connected to the bottom of the upper section 300 via a threaded structure. The spherical lower section 302 is a hollow sphere with an open top. The volume of the Marshall funnel 30 of the second structure is 850ml, which is suitable for mud with a water content greater than 400%.

[0077] For low-viscosity mud, the Marvin funnel 30 of structure type II increases the volume and prolongs the mud flow time, which can improve the accuracy of the test. For low-viscosity mud, structure type I can be used for testing. For mud of different viscosities, different types of Marvin funnel combinations can be selected.

[0078] The measuring unit 4 in this embodiment includes a measuring cup 40, a level bubble meter 41, a timing mechanism 42, and a handle 43, as shown below. Figure 7 As shown, the measuring cup 40 is beaker-shaped, with a spout at the top for easy pouring out the mud inside. A horizontal bubble level 41 is horizontally positioned on the outer wall of the measuring cup 40 to detect whether it is level. A horizontal bubble level is indicated by the bubble being in the center of the bubble level 41. Maintaining the measuring cup 40 in a horizontal position ensures the accuracy of the test results. The timing mechanism 42 in this embodiment includes a green indicator light 420, a red indicator light 421, and a digital timer 422. The green indicator light 420 is fixed to the bottom outer wall of the measuring cup 40, and two wires extend horizontally into the measuring cup 40. The timing mechanism detects when the liquid level reaches the specified value. When the liquid level reaches the required height, the green indicator light 420 illuminates, and the red indicator light 421 is fixed to the outer wall of the top of the measuring cup 40. Two wires extend horizontally into the measuring cup 40. When the liquid level reaches the height of the wires, the red indicator light 421 illuminates. The digital timer 422 is connected to the green indicator light 420 and the red indicator light 421. The digital timer 422 starts timing when the green indicator light 420 illuminates and stops timing when the red indicator light 421 illuminates. The handle 43 is fixed to the outer wall of the measuring cup 40, making it easy to pick up the measuring cup 40 and facilitates the subsequent pouring of mud back into the mixing unit 2 for multiple mud viscosity measurements.

[0079] Furthermore, the working principle of the timing mechanism 42 in this embodiment is as follows: Figure 8As shown, when the liquid level reaches the position of the green indicator light 420, due to the conductivity of the mud, the first switch 4200 of the green indicator light 420 is turned on, and the green indicator light 420 lights up. At the same time, the current generated through the spiral coil 4220 generates a magnetic force, which attracts the first switch 4221 of the digital display timer 422. Previously, the second switch 4222 of the digital display timer 422 was turned on, and the digital display timer 422 started timing. When the liquid level reaches the position of the red indicator light 421, the second switch 4210 of the red indicator light 421 is turned on, and the red indicator light 421 lights up. At this time, the current through the spiral coil 4220 increases due to the parallel effect, and the magnetic force of the spiral coil 4220 increases, attracting the second switch 4222 of the digital display timer 422, causing the circuit of the digital display timer 422 to short-circuit, and the timing ends.

[0080] Furthermore, the timing mechanism 42 in this embodiment can also achieve the timing purpose by manually controlling the start and stop of the digital display timer 422. That is, when the green indicator light 420 is observed to be lit, the remote signal controls the digital display timer 422 to start, and when the red indicator light 421 is observed to be lit, the remote signal controls the digital display timer 422 to stop timing.

[0081] Furthermore, there are two types of measuring units 4 in this embodiment. The difference between the two types lies in the different volumes of the measuring cups 40, which are 700ml and 900ml respectively. For the 700ml measuring cup 40, the green indicator light 420 is arranged at the 100ml volume height position, and the red indicator light 421 is arranged at the 600ml volume height position, which is suitable for mud with a water content of less than or equal to 350%. For the 900ml measuring cup 40, the green indicator light 420 is arranged at the 100ml volume height position, and the red indicator light 421 is arranged at the 800ml volume height position, which is suitable for mud with a water content of greater than 400%.

[0082] Example 2

[0083] The high-precision mud viscosity testing method of this embodiment, based on the high-precision mud viscosity tester of Embodiment 1, includes the following steps:

[0084] I. Assembly of the testing instrument

[0085] Assemble the triangular base 10 and splice the support rod 11. Then connect the support rod 11 with the triangular base 10. Fix the Marshall funnel 30 to the right side of the support rod 11 with a bracket. Fix the mixing container 21 to the left side of the support rod 11 with a bracket. Fix the mixer 20 to the top of the mixing container 21 with a bracket. Connect one end of the plastic hose 22 to the bottom of the mixing container 21 and place the other end above the Marshall funnel 30 with a fixing clamp 31.

[0086] II. Mud Preparation

[0087] Clamp the hose 22 with a clamp, turn off the rotary switch 33 at the bottom of the Marshall funnel 30, place the weighed air-dried clay and bentonite into the mixing container 21, turn on the mixer 20 to mix thoroughly, then add the calculated volume of water while stirring. After all the water has been added, the mixer 20 will work for another two minutes to ensure that the mud is fully mixed and uniform.

[0088] III. Begin Measurement

[0089] For mud with a water content of less than or equal to 350%,

[0090] Select the Marsh funnel 30 with a tapered lower section 301 and the measuring cup 40 with a capacity of 700ml. Release the clamp of the hose 22. The mud enters the Marsh funnel 30 after being filtered through the filter screen 32 via the hose 22. Turn on the rotary switch 33. The mud flows into the measuring cup 40. The timing mechanism 42 records the time it takes for 500ml of mud to flow through.

[0091] For mud with a water content greater than 400%,

[0092] Select the Marsh funnel 30 with the lower spherical section 302 and the measuring cup 40 with a capacity of 900ml. Release the clamp of the hose 22. The mud enters the Marsh funnel 30 after being filtered through the filter screen 32 via the hose 22. Turn on the rotary switch 33. The mud flows into the measuring cup 40. The timing mechanism 42 records the time it takes for 700ml of mud to flow through.

[0093] After the measurement is completed, pour the mud back into the mixer 20 and repeat the above process.

[0094] Example 3

[0095] In this embodiment, wall-protecting mud with different moisture contents is prepared, and the mud viscosity is tested using the high-precision mud viscosity tester of Example 1.

[0096] The wall-protecting slurry is composed of air-dried clay, bentonite, and a fixed volume of water. The water content is the ratio of water to air-dried clay, and the bentonite content is three percent of the mass of air-dried clay. The viscosity of the slurry is expressed by the test time.

[0097] The mixing ratios and test times of the wall-protecting mud at different moisture contents are shown in Tables 1 and 2.

[0098] Table 1

[0099]

[0100] Table 2

[0101]

[0102] In the table, T is the average of the three numbers T1, T2, and T3.

[0103] Tables 1 and 2 present the results of the tests. It can be seen that for mud with a water content of less than or equal to 350%, the results measured by the Type 1 Marshall funnel 30 are significantly more accurate than those measured by the traditional stopwatch method. For mud with a water content greater than 400%, the Type 2 Marshall funnel 30, by increasing its volume, makes the time taken to pass through the funnel longer, resulting in even greater accuracy.

[0104] The examples described herein are merely preferred embodiments of the invention and are not intended to limit the concept and scope of the invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the invention without departing from the design concept of the invention should fall within the protection scope of the invention.

Claims

1. A digital high-precision mud viscosity tester, characterized in that, include: Support unit (1); The mixing unit (2) is arranged on the upper part of the support unit (1) and is used for mixing and preparing mud. The funnel unit (3) is arranged on the support unit (1) below the mixing unit (2), and the mixed and prepared mud is fed into the funnel unit (3); The funnel unit (3) includes a Martens funnel (30), which is a two-section detachable structure, including: Upper section of the funnel (300); And a lower section detachably connected to the bottom of the upper section (300) of the funnel, the lower section having one of the following two structures: The tapered lower section (301) is a hollow cone with an inner diameter that gradually decreases from top to bottom, and has a volume of 650ml, for use in mud with a water content of ≤350%. or, The spherical lower section (302) is a hollow sphere with an open top and a volume of 850ml, used for mud with a water content >400%. The measuring unit (4) is arranged directly below the funnel unit (3). The mud flows into the measuring unit (4) through the funnel unit (3). The measuring unit (4) is used to record the time it takes for the mud to pass through the funnel unit (3).

2. The digital display type high-precision mud viscosity tester according to claim 1, characterized in that, The support unit (1) includes: A triangular base (10) is in the shape of a triangular plate and is arranged on a horizontal surface. The three corners of the triangular base (10) are movable triangular blocks (100), and the middle part of the triangular base (10) is a fixed base block (101). The movable triangular blocks (100) are hinged to the fixed base block (101), and the fixed base block (101) has a vertical mounting hole (102) in the middle. The support rod (11) is arranged vertically, and its bottom end is connected to the mounting hole (102). The support rod (11) is a multi-segment assembly type.

3. The digital display high-precision mud viscosity tester according to claim 2, characterized in that, The mixing unit (2) includes: A mixer (20) is connected to one side of the upper end of a support rod (11) via a bracket; A mixing container (21) is arranged below the mixer (20), and the mixing container (21) is connected to the support rod (11) by a bracket; A hose (22) is connected to the bottom of the mixing container (21), and a clamp is provided on the hose (22).

4. The digital display high-precision mud viscosity tester according to claim 3, characterized in that, The funnel unit (3) includes: Margaret funnel (30), which is connected to the other side of support frame (11) by a bracket, the height of Margaret funnel (30) is lower than the height of mixing unit (2); A fixing clamp (31) is arranged at the top of the Marshall funnel (30) to fix the hose (22). The filter screen (32) is placed horizontally on top of the Marshall funnel (30); A rotary switch (33) is located at the bottom of the Marshall funnel (30) and is used to control whether the Marshall funnel (30) discharges mud downwards.

5. The digital display high-precision mud viscosity tester according to claim 4, characterized in that, The Marshall funnel (3) is a two-section detachable structure, and the upper section (300) and the lower section of the funnel are connected by threads.

6. The digital display high-precision mud viscosity tester according to claim 4, characterized in that, The measuring unit (4) includes: Measuring cup (40) is positioned directly below funnel unit (3); A horizontal bubble level (41) is horizontally arranged on the outer wall of the measuring cup (40) to detect whether the measuring cup (40) is placed horizontally; The timing mechanism (42) includes a green indicator light (420), a red indicator light (421), and a digital timer (422). The green indicator light (420) is fixed to the bottom outer wall of the measuring cup (40), and two wires extend horizontally into the measuring cup (40). The green indicator light (420) lights up when the liquid level reaches the height of the wires. The red indicator light (421) is fixed to the top outer wall of the measuring cup (40), and two wires extend horizontally into the measuring cup (40). The red indicator light (421) lights up when the liquid level reaches the height of the wires. The digital timer (422) is connected to the green indicator light (420) and the red indicator light (421). The digital timer (422) starts timing when the green indicator light (420) lights up, and stops timing when the red indicator light (421) lights up. The handle (43) is fixedly formed on the outer wall of the measuring cup (40).

7. The digital display high-precision mud viscosity tester according to claim 6, characterized in that: The measuring cup (40) of the measuring unit (4) has two volumes: 700ml and 900ml. For the 700ml measuring cup (40), the green indicator light (420) is located at the height of 100ml volume, and the red indicator light (421) is located at the height of 600ml volume. For the 900ml measuring cup (40), the green indicator light (420) is located at the height of 100ml volume, and the red indicator light (421) is located at the height of 800ml volume.

8. A high-precision mud viscosity testing method using the digital high-precision mud viscosity tester according to any one of claims 1 to 7, characterized in that, Includes the following steps:

1. Assemble the tester; 2. Prepare mud, clamp the hose (22) with a clamp, put the weighed air-dried clay and bentonite into the mixing container (21), start the mixer (20) to mix thoroughly, then add the calculated volume of water while adding and mixing. After the water is completely added, the mixer (20) will work for another two minutes. III. Begin measurement For mud with a water content of less than or equal to 350%, Select a Marsh funnel (30) with a tapered lower section (301) and a measuring cup (40) with a capacity of 700ml. Release the clamp of the hose (22). The mud flows through the hose (22) and is filtered through the filter screen (32) before entering the Marsh funnel (30). Turn on the rotary switch (33). The mud flows into the measuring cup (40). The timing mechanism (42) records the time it takes for 500ml of mud to flow through. For mud with a water content greater than 400%, Select a Marshall funnel (30) with a spherical lower section (302) and a measuring cup (40) with a capacity of 900ml. Release the clamp of the hose (22). The mud enters the Marshall funnel (30) after being filtered through the filter screen (32) by the hose (22). Turn on the rotary switch (33). The mud flows into the measuring cup (40). The timing mechanism (42) records the time it takes for 700ml of mud to flow through. After the measurement is completed, pour the mud back into the mixer (20) and repeat the above process.

Images