CN212031251U - Permeameter for detecting soil permeability - Google Patents
Permeameter for detecting soil permeability Download PDFInfo
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- CN212031251U CN212031251U CN202020801944.XU CN202020801944U CN212031251U CN 212031251 U CN212031251 U CN 212031251U CN 202020801944 U CN202020801944 U CN 202020801944U CN 212031251 U CN212031251 U CN 212031251U
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- shoulder hole
- sample cup
- permeameter
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Abstract
The utility model discloses a permeameter for soil permeability detects, the shoulder hole has been seted up on the chassis, the bottom cooperation of sample cup is installed in the shoulder hole, set up the water injection pipe of past sample cup internal water injection on the lateral wall on chassis, sample cup top sliding fit installs the clamp plate, the drainage chamber has been seted up to the inside of clamp plate, the wash port of a plurality of cavitys intercommunications with the sample cup is seted up to the bottom of drainage chamber, the top of clamp plate still is provided with the drain pipe, blast pipe and position sleeve, drain pipe and blast pipe all communicate with the drainage chamber, and the blast pipe is located one side of drain pipe, the position sleeve sets up the middle part at the clamp plate, the piston rod sliding fit of cylinder is in the position sleeve, and be provided with the pressure detection head between the piston rod of cylinder and position sleeve's bottom. Through cylinder and pressure detection head, can be under different pressure effects, the displacement of drain pipe to soil permeability data under the different pressure effects is obtained.
Description
Technical Field
The utility model relates to a soil permeability detects technical field, especially a permeameter for soil permeability detects.
Background
The soil permeability is an important physical index for comprehensively reflecting the permeability of the soil body. The quality of permeability mainly depends on the shape and size of soil particles, the content of organic matters, the viscosity of water and the like, and the permeability is often required to be measured in the research of soil moisture balance, irrigation, drainage, soil improvement and the like.
In the process of researching the permeability of soil, the existing equipment is usually operated manually, the pressure borne by the soil is not accurately measured, the permeability of the soil is detected in the modes of water injection, water drainage and the like, the extrusion amount of the soil is different, the water drainage amount of the soil is also different, therefore, the pressure needs to be fixed, and in order to facilitate research, the permeability of the soil can be detected under different gradient pressures, so that the research on the internal relation between the two processes of soil consolidation and permeability is facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome prior art's shortcoming, provide a permeameter for soil permeability detects.
The purpose of the utility model is realized through the following technical scheme: a permeameter for detecting soil permeability comprises a chassis, a supporting device arranged on the chassis, a cylinder and a sample cup, wherein a stepped hole is arranged on the chassis, the bottom of the sample cup is arranged in the stepped hole in a matching way, a water injection pipe for injecting water into the sample cup is arranged on the side wall of the chassis, a pressing plate is arranged at the top of the sample cup in a sliding matching way, a drainage cavity is arranged inside the pressing plate, a plurality of drainage holes communicated with the cavity of the sample cup are arranged at the bottom of the drainage cavity, a drainage pipe, an exhaust pipe and a positioning sleeve are also arranged at the top of the pressing plate, the drainage pipe and the exhaust pipe are communicated, the exhaust pipe is positioned at one side of the drain pipe, the positioning sleeve is arranged in the middle of the pressure plate, the piston rod of the cylinder is in sliding fit in the positioning sleeve, and a pressure detection head is arranged between a piston rod of the cylinder and the bottom of the positioning sleeve, and a cylinder body of the cylinder is arranged on the supporting device.
Preferably, the sample cup includes the cup and installs the scraper in the cup, and the compaction has soil in the scraper, and the up end of soil flushes with the up end of scraper, and the lower terminal surface of soil flushes with the lower terminal surface of scraper.
Preferably, the shoulder hole is by the one-level shoulder hole from last down, second grade shoulder hole and tertiary shoulder hole are constituteed, and the diameter of one-level shoulder hole is greater than the diameter of second grade shoulder hole, the diameter of second grade shoulder hole is greater than the diameter of tertiary shoulder hole, the bottom cooperation of sample cup is installed in the bottom of one-level shoulder hole, the backup pad has been placed in the second grade shoulder hole, the top of backup pad flushes with the lower terminal surface of soil, and a plurality of through-holes have been seted up in the backup pad, the backup pad forms the water injection chamber with tertiary shoulder hole, water injection pipe and water injection chamber intercommunication.
Preferably, an annular groove is formed in the outer side wall of the pressure plate, and an annular sealing ring is installed in the annular groove.
Preferably, the supporting device comprises an upright column and a supporting beam, the upright column is respectively installed at two ends of the supporting beam, and the other end of the upright column is connected with the chassis.
Preferably, a sealing gasket is arranged on the step of the first-stage stepped hole.
Preferably, the filter paper is arranged between the bottom of the pressing plate and the soil, and the filter paper is also arranged between the top of the supporting plate and the soil.
The utility model has the advantages of it is following: the permeameter of the utility model can discharge the water of the drain pipe under the action of different pressures through the cylinder and the pressure detection head, thereby obtaining the soil permeability data under the action of different pressures; the whole device is convenient to disassemble and assemble, and after the experiment is completed, all parts can be cleaned, so that the service life of the permeameter is ensured.
Drawings
FIG. 1 is a schematic structural diagram of the present invention
FIG. 2 is a schematic sectional view of the present invention
FIG. 3 is a schematic view of the structure of the pressing plate
FIG. 4 is a schematic view of the structure of the chassis
In the figure, 1-chassis, 2-upright post, 3-supporting beam, 4-cylinder, 5-pressure detecting head, 6-pressing plate, 7-sample cup, 8-scraper, 9-supporting plate, 10-water injection cavity, 11-water injection pipe, 12-primary stepped hole, 13-secondary stepped hole, 61-water discharge pipe, 62-air discharge pipe, 63-water discharge cavity, 64-positioning sleeve, 65-water discharge hole and 66-annular sealing ring.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, a permeameter for soil permeability detection comprises a chassis 1, a supporting device arranged on the chassis 1, a cylinder 4 and a sample cup 7, wherein in the embodiment, the sample cup 7 comprises a cup body and a scraper 8 installed in the cup body, soil to be detected is placed in the sample cup 7, then the soil to be detected is compacted in the scraper 8, the upper end face of the soil is flush with the upper end face of the scraper 8, and the lower end face of the soil is flush with the lower end face of the scraper 8.
In this embodiment, a stepped hole is formed in the chassis 1, the bottom of the sample cup 7 is installed in the stepped hole in a matching manner, a water injection pipe 11 for injecting water into the sample cup 7 is formed in the side wall of the chassis 1, further, the stepped hole is composed of a first-stage stepped hole 12, a second-stage stepped hole 13 and a third-stage stepped hole from top to bottom, the diameter of the first-stage stepped hole 12 is larger than that of the second-stage stepped hole 13, the diameter of the second-stage stepped hole 13 is larger than that of the third-stage stepped hole, the bottom of the sample cup 7 is installed at the bottom of the first-stage stepped hole 12 in a matching manner, preferably, an external thread is formed on the outer side wall of the sample cup 7, an internal thread is formed on the inner side wall of the first-stage stepped hole 12, the sample cup 7 is connected with the first-stage stepped hole 12 through a thread, so that the mounting stability of the sample cup 7 is, the bottom of sample cup 7 contacts with sealed the pad to compress tightly sealed the pad, thereby make gaseous and liquid can not overflow through the junction of sample cup 7 and one-level shoulder hole 12, thereby can improve and detect the precision.
In this embodiment, backup pad 9 has been placed in second grade shoulder hole 13, the top of backup pad 9 flushes with the lower terminal surface of soil, and a plurality of through-holes have been seted up on the backup pad 9, backup pad 9 forms water injection chamber 10 with tertiary shoulder hole, water injection pipe 11 and water injection chamber 10 intercommunication, it is further, also be provided with the filter paper between the top of backup pad 9 and the soil, when the water injection, water liquid can pass through the filter paper, and the filter paper has the effect of holding back soil, can avoid the soil granule to enter into in the water injection chamber 10 through the through-hole, thereby can guarantee the integrality of soil.
In this embodiment, clamp plate 6 is installed to sample cup 7 top sliding fit, and drainage chamber 63 has been seted up to clamp plate 6's inside, and a plurality of wash ports 65 with the cavity intercommunication of sample cup 7 have been seted up to drainage chamber 63's bottom, and further, be provided with the filter paper between clamp plate 6 bottom and the soil, the filter paper can guarantee that liquid enters into drainage chamber 63 equally, and prevents that soil from entering into drainage chamber 63 through wash ports 65.
In this embodiment, the top of the pressing plate 6 is further provided with a drain pipe 61, an exhaust pipe 62 and a positioning sleeve 64, the drain pipe 61 and the exhaust pipe 62 are both communicated with the drain cavity 63, and the exhaust pipe 62 is located on one side of the drain pipe 61, further, valves are arranged on the exhaust pipe 62, the drain pipe 61 and the water injection pipe 11, the water injection pipe 11 can be further connected with a supercharger according to actual requirements, and water injection pressure can be increased through the supercharger. At the in-process of 11 water injections of water injection pipe, drain pipe 61 closes, then during water liquid enters into soil through water injection chamber 10, then soil absorbs the moisture and can take place the inflation, and when injecting into water liquid in-process, soil gap, intake antrum and drainage chamber 63 can be filled to water liquid, and blast pipe 62 is in the opening device this moment, and the air in intake antrum, drainage chamber 63 and the soil gap then discharges through blast pipe 62.
In this embodiment, the positioning sleeve 64 is disposed in the middle of the pressing plate 6, the piston rod of the cylinder 4 is slidably fitted in the positioning sleeve 64, the pressure detection head 5 is disposed between the piston rod of the cylinder 4 and the bottom of the positioning sleeve 64, the cylinder body of the cylinder 4 is mounted on the supporting device, after water injection is completed, the water injection pipe 11 and the exhaust pipe 62 are closed, the drain pipe 61 is opened, and the pressing plate 6 descends through the cylinder 4, the pressing plate 6 continuously extrudes soil in the descending process, so that water in the soil is extruded out, the extruded water is discharged through the drain pipe 61, the data of soil permeability is obtained by measuring the water discharge amount of the drain pipe 61, and along with the descending of the pressing plate 6, the pressure detected by the pressure detection head 5 continuously increases, and by controlling the descending of the cylinder 4, the data of soil permeability under different pressure effects can be realized, thereby facilitating the analysis and detection of soil permeability.
In this embodiment, an annular groove is formed in the outer side wall of the pressure plate 6, an annular sealing ring 66 is installed in the annular groove, and the pressure plate 6 and the sample cup 7 can be sealed by the annular sealing ring 66, so that it is ensured that water liquid and air do not leak, and the stability of pressure is ensured.
In this embodiment, strutting arrangement includes stand 2 and supporting beam 3, and stand 2 is installed respectively at supporting beam 3's both ends, and stand 2's the other end is connected with chassis 1, and supporting beam 3 is the steel member, and in 4 working processes of cylinder, supporting beam 3 can play the support fixed action to cylinder 4 to guarantee that clamp plate 6 is down under 4 effects of cylinder.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. A permeameter for soil permeability detection, comprising: the device comprises a chassis, a supporting device arranged on the chassis, an air cylinder and a sample cup, wherein a stepped hole is formed in the chassis, the bottom of the sample cup is installed in the stepped hole in a matched manner, a water injection pipe for injecting water into the sample cup is formed in the side wall of the chassis, a pressing plate is installed at the top of the sample cup in a sliding fit manner, a drainage cavity is formed in the pressing plate, a plurality of drainage holes communicated with the cavity of the sample cup are formed in the bottom of the drainage cavity, a drainage pipe, an exhaust pipe and a positioning sleeve are further arranged at the top of the pressing plate, the drainage pipe and the exhaust pipe are both communicated with the drainage cavity, the exhaust pipe is positioned on one side of the drainage pipe, the positioning sleeve is arranged in the middle of the pressing plate, a piston rod of the air cylinder is in sliding fit with the positioning sleeve, and a pressure detection head is arranged, the cylinder body of the air cylinder is arranged on the supporting device.
2. The permeameter for soil permeability detection according to claim 1, wherein: the sample cup comprises a cup body and a scraper installed in the cup body, soil is compacted in the scraper, the upper end face of the soil is flush with the upper end face of the scraper, and the lower end face of the soil is flush with the lower end face of the scraper.
3. A permeameter for soil permeability detection according to claim 2, wherein: the shoulder hole comprises from last one-level shoulder hole, second grade shoulder hole and tertiary shoulder hole down, and the diameter of one-level shoulder hole is greater than the diameter of second grade shoulder hole, the diameter of second grade shoulder hole is greater than the diameter of tertiary shoulder hole, the bottom cooperation of sample cup is installed in the bottom of one-level shoulder hole, the backup pad has been placed in the second grade shoulder hole, the top of backup pad with the lower terminal surface of soil flushes, just a plurality of through-holes have been seted up in the backup pad, the backup pad with tertiary shoulder hole forms the water injection chamber, the water injection pipe with water injection chamber intercommunication.
4. A permeameter for soil permeability detection according to claim 3, wherein: an annular groove is formed in the outer side wall of the pressing plate, and an annular sealing ring is installed in the annular groove.
5. A permeameter for soil permeability detection according to claim 4, wherein: the supporting device comprises an upright post and a supporting cross beam, the upright post is respectively arranged at two ends of the supporting cross beam, and the other end of the upright post is connected with the chassis.
6. A permeameter for soil permeability detection according to claim 5, wherein: and a sealing gasket is arranged on the step of the first-stage stepped hole.
7. A permeameter for soil permeability detection according to claim 6, wherein: the clamp plate bottom with be provided with the filter paper between the soil, the top of backup pad with also be provided with the filter paper between the soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020801944.XU CN212031251U (en) | 2020-05-14 | 2020-05-14 | Permeameter for detecting soil permeability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020801944.XU CN212031251U (en) | 2020-05-14 | 2020-05-14 | Permeameter for detecting soil permeability |
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| Publication Number | Publication Date |
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| CN212031251U true CN212031251U (en) | 2020-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020801944.XU Active CN212031251U (en) | 2020-05-14 | 2020-05-14 | Permeameter for detecting soil permeability |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008757A (en) * | 2021-02-25 | 2021-06-22 | 温州际高检测仪器有限公司 | Automatic clamping device for geosynthetic permeability test |
| CN113495048A (en) * | 2021-09-08 | 2021-10-12 | 南通华兴石油仪器有限公司 | High-pressure seepage test device |
-
2020
- 2020-05-14 CN CN202020801944.XU patent/CN212031251U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113008757A (en) * | 2021-02-25 | 2021-06-22 | 温州际高检测仪器有限公司 | Automatic clamping device for geosynthetic permeability test |
| CN113008757B (en) * | 2021-02-25 | 2024-05-10 | 温州际高检测仪器有限公司 | Automatic clamping device for permeability test of geosynthetic material |
| CN113495048A (en) * | 2021-09-08 | 2021-10-12 | 南通华兴石油仪器有限公司 | High-pressure seepage test device |
| CN113495048B (en) * | 2021-09-08 | 2021-11-16 | 南通华兴石油仪器有限公司 | High-pressure seepage test device |
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