Device for measuring permeability coefficient of indoor soil
By designing a soil permeability coefficient measuring device comprising an annular groove, an extended ring knife and scale lines, the problems of unstable water surface height and complex operation in traditional methods were solved, and higher measurement accuracy was achieved.
Patent Information
- Application Number
- CN202510992914.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-17
- Publication Date
- 2025-10-17
AI Technical Summary
The traditional knife ring method is difficult to continuously maintain a specific water surface height in soil permeability coefficient measurement, which affects the measurement accuracy and is cumbersome to operate.
An indoor soil permeability coefficient measuring device is designed, which includes an annular groove in the hollow part, an extended ring knife, an injector, a sample ring knife, a funnel and a beaker. By setting an annular receiving plate and scale lines, the water head height and flow rate can be controlled to accurately measure the permeability.
The accuracy of soil permeability coefficient measurement is improved, and the problems of low accuracy and complicated operation in traditional methods are solved.
Smart Images
Figure CN120801135A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of pedology devices, in particular to a device for measuring indoor soil permeability coefficient. BACKGROUND
[0002] Currently, soil permeability coefficient measurement techniques are divided into outdoor direct measurement and indoor laboratory measurement. The outdoor direct measurement usually adopts field liquid injection experiments, and the indoor laboratory measurement mostly adopts the cutting ring method.
[0003] The traditional cutting ring method uses a cutting ring to collect soil samples at an outdoor sampling site, and then connects an empty cutting ring to the upper part of the soil sample cutting ring in the laboratory. The soil sample cutting ring and the empty cutting ring are sealed with paraffin and then fixed with transparent tape. Then, the cutting ring above the soil sample cutting ring is kept at a specific water level by cooperating a separatory funnel with a rubber bulb dropper, so that water naturally infiltrates from the soil. The lower part of the sample cutting ring collects the infiltrated water with a Buchner funnel. In fact, it is difficult to continuously maintain a specific water level, thereby affecting the accuracy of the measurement. Moreover, the infiltration speed during the period from adding water to the specific water level to the first drop of infiltrated water cannot be calculated, and the operation process of the simple device is relatively cumbersome.
[0004] To solve the above problems, the present application provides a device for measuring indoor soil permeability coefficient to solve the problem of low measurement accuracy of the previous soil permeability coefficient measurement device. SUMMARY
[0005] The purpose of the present application is to provide a device for measuring indoor soil permeability coefficient to improve the measurement accuracy.
[0006] To achieve the above purpose, the present application provides the following solutions:
[0007] A device for measuring indoor soil permeability coefficient, comprising a ring-shaped groove with a hollow part in the middle, an extension cutting ring arranged in the hollow part of the ring-shaped groove, a liquid injector arranged above the extension cutting ring, a sample cutting ring arranged at the bottom of the extension cutting ring and connected with the extension cutting ring, a funnel arranged below the sample cutting ring, and a beaker arranged below the funnel, the extension cutting ring comprises a cutting ring body and a ring-shaped receiving plate arranged on the top outer wall of the cutting ring body, the receiving plate is arranged on the inner wall of the ring-shaped groove and blocks the hollow part.
[0008] Preferably, a scale is arranged on the liquid injector.
[0009] Preferably, a flow guide pipe is arranged at the liquid outlet of the liquid injector, and a valve for controlling the liquid flow is arranged on the flow guide pipe.
[0010] Preferably, the lower mouth of the flow guide is close to the inner wall of the ring cutter body.
[0011] Preferably, the first table surface provided with mounting holes is further provided with a second table surface, a through hole is provided on the second table surface, and the annular groove is provided on the second table surface and the hollow part is communicated with the through hole.
[0012] Preferably, the first table surface provided with mounting holes is further provided with a second table surface, a through hole is provided on the second table surface, and the annular groove is provided on the second table surface and the hollow part is communicated with the through hole.
[0013] Preferably, the funnel is a Buchner funnel.
[0014] Preferably, a scale is provided in the annular groove.
[0015] The present application has the following technical effects relative to the prior art:
[0016] The present application sets the extension ring cutter with the annular receiving plate, cooperates with the setting condition flow rate of the liquid injector, and more water flows out from the periphery of the annular receiving plate into the annular groove, so that the liquid injector can always inject water and does not affect the height of the water head. The liquid injector and the annular groove are both provided with scales. The initial water amount is subtracted by the amount of the excess water flowing out, and then the amount of the water in the extension ring cutter is subtracted, so as to measure the permeation amount in the time period from the water adding to the water head height to the dripping of the first drop of the permeation water, thereby achieving the purpose of improving the determination precision. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.
[0018] Figure 1 The figure is a structural schematic diagram of the present application;
[0019] Figure 2 The figure is a structural schematic diagram of the present application;
[0020] Among them, 1, liquid injector; 2, valve; 3, flow guide pipe; 4, extension ring cutter; 5, annular groove; 6, second table surface; 7, first table surface; 8, beaker; 9, funnel; 10, sample ring cutter. DETAILED DESCRIPTION
[0021] Clearly, the described embodiments are only a 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 efforts fall within the protection scope of the present application.
[0022] The purpose of the present application is to provide a device for measuring the permeability coefficient of indoor soil, so as to improve the measurement accuracy.
[0023] In order to make the above-mentioned purposes, characteristics and advantages of the present application more obvious and easy to understand, the present application will be further described in detail below with reference to the drawings and specific embodiments.
[0024] Reference Figures 1 to 2 The device for measuring the permeability coefficient of indoor soil comprises a ring-shaped groove provided with a hollow part in the middle, an extension ring cutter arranged in the hollow part of the ring-shaped groove, a liquid injector arranged above the extension ring cutter, a sample ring cutter arranged at the bottom of the extension ring cutter and connected with the extension ring cutter, a funnel arranged below the sample ring cutter, and a beaker arranged below the funnel. The extension ring cutter comprises a cutter body and a ring-shaped receiving plate arranged on the outer wall of the top of the cutter body. The receiving plate is arranged on the inner wall of the ring-shaped groove and seals the hollow part. The extension ring cutter with the ring-shaped receiving plate is arranged to cooperate with the liquid injector to set the flow rate. Excess water will flow out from the periphery of the ring-shaped receiving plate into the ring-shaped groove. Therefore, the liquid injector can continuously inject water without affecting the height of the water head. The liquid injector and the ring-shaped groove are both provided with scale lines. The permeation amount in the period from the time when water is added to the time when the first drop of permeated water drops after the height of the water head is measured by subtracting the amount of excess water flowing out from the initial water amount and then subtracting the amount of water in the extension ring cutter. Therefore, the purpose of improving the measurement accuracy is achieved.
[0025] Further, the liquid injector is provided with scale lines.
[0026] Reference Figure 1 The liquid outlet of the liquid injector is provided with a flow guide pipe, and the flow guide pipe is provided with a valve for controlling the liquid flow rate.
[0027] Reference Figure 1 The lower opening of the flow guide is close to the inner wall of the cutter body.
[0028] Reference Figure 1 Or Figure 2 Further comprising a first table top provided with a mounting hole, and the funnel is clamped on the first table top through the mounting hole.
[0029] Reference Figure 1Further, a second table is arranged on the first table, a through hole is arranged on the second table, and the hollow part is communicated with the through hole.
[0030] Further, the funnel is a Bunsen funnel.
[0031] Further, a scale is arranged in the annular groove.
[0032] The use method of the present application is as follows:
[0033] First, a sufficient amount of liquid is added to the liquid injector. The total amount of liquid is recorded, and the liquid flows out of the lower flow guide pipe. The flow rate of the liquid is controlled by the valve. The lower end of the flow guide pipe is as close as possible to the extension surface of the extension ring knife in the sample ring knife. The extension ring knife is connected to the sample ring knife below, and then placed in the hollow part of the annular groove, which is placed on the second table. The lower part of the sample ring knife is connected to the Bunsen funnel, which receives the permeate liquid. The Bunsen funnel is placed on the first table, and the beaker is placed below to collect the permeate liquid.
[0034] Open the valve to control the flow rate of the liquid, and reduce the flow rate when the liquid level is close to the port. Start timing. A part of the liquid penetrates into the sample ring knife, and the excess liquid flows out of the extension ring knife.
[0035] When the first drop of liquid drips from the lower Bunsen funnel, record the time and the volume of the liquid in the cylindrical water tank. At this time, the initial amount of liquid that penetrates into the sample ring knife can be calculated by subtracting the volume of the extension ring knife and the amount of liquid in the water tank from the initial total amount of liquid.
[0036] At this time, continue to penetrate, and keep the flow rate and the water head height of the sample ring knife.
[0037] Continue timing, collect the infiltrated liquid, replace the beaker at a certain time, and record the liquid content in the beaker. When the liquid content remains unchanged, it can be considered to be stable, and the saturated permeability coefficient is reached.
[0038] The principles and implementation modes of the present application are described by applying specific examples. The above examples are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation modes and application ranges will be changed. In conclusion, the content of the present specification should not be understood as a limitation of the present application.
Claims
1. A device for measuring indoor soil permeability coefficient, characterized in that: It includes an annular groove with a hollow portion in the middle, an extended ring knife arranged in the hollow portion of the annular groove, an injector arranged above the extended ring knife, a sample ring knife arranged at the bottom of the extended ring knife and connected to the extended ring knife, a funnel arranged below the sample ring knife and a beaker arranged below the funnel. The extended ring knife includes a ring knife body and an annular receiving plate arranged on the outer wall of the top of the ring knife body. The receiving plate is mounted on the inner wall of the annular groove and seals the hollow portion.
2. The device for measuring indoor soil permeability coefficient according to claim 1, characterized in that: The liquid injector is provided with scale lines.
3. The device for measuring indoor soil permeability coefficient according to claim 1, characterized in that: A guide tube is provided at the liquid outlet of the injector, and a valve for controlling the liquid outlet flow is provided on the guide tube.
4. The device for measuring indoor soil permeability coefficient according to claim 3, characterized in that: The lower opening of the deflector is close to the inner wall of the ring cutter body.
5. The device for measuring indoor soil permeability coefficient according to claim 1, characterized in that: The device further includes a first table with a mounting hole, and the funnel is connected to the first table through the mounting hole.
6. The device for measuring indoor soil permeability coefficient according to claim 5, characterized in that: The invention also includes a second table surface arranged on the first table surface, a through hole is opened on the second table surface, the annular groove is arranged on the second table surface, and the hollow portion is connected to the through hole.
7. The device for measuring indoor soil permeability coefficient according to claim 6, characterized in that: The funnel is a Buchner funnel.
8. The device for measuring indoor soil permeability coefficient according to claim 1, characterized in that: Scale lines are arranged in the annular groove.