CN212340949U

CN212340949U - Test equipment for measuring permeability of geosynthetic material

Info

Publication number: CN212340949U
Application number: CN202021062035.5U
Authority: CN
Inventors: 薄丽洁; 曾优
Original assignee: Suzhou Water Conservancy Engineering Quality Testing Center Co ltd
Current assignee: Suzhou Water Conservancy Engineering Quality Testing Center Co ltd
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-01-12
Anticipated expiration: 2030-06-10

Abstract

The utility model belongs to the geosynthetic field specifically is a test equipment for determining geosynthetic permeability, including the supporting leg, supporting leg fixed connection is in the bottom surface of collecting tank, the top fixedly connected with otter board of collecting tank, and the top surface fixedly connected with of otter board agrees with the ring. This device is through the design that adopts inflator and barometer, cooperate the used jointly that agrees with the ring simultaneously, when needs carry out the permeability detection operation to geosynthetic material, directly place the material on agreeing with the ring, then recycle the inflator exert pressure to sealed intracavity can, the atmospheric pressure in the sealed intracavity can be artificially controlled, and the water body that can directly flow through the strength of permeability judges, guaranteed that the device is experimental convenient, on directly perceived and controllable basis, can also improve the scope that the device can detect the material, the great problem of traditional device use limitation has been solved.

Description

Test equipment for measuring permeability of geosynthetic material

Technical Field

The utility model relates to a geosynthetic material field specifically is a test equipment for determining geosynthetic material permeability.

Background

Geosynthetics are a general term for synthetic materials used in civil engineering applications. As a civil engineering material, it uses artificially synthesized polymer as raw material, and makes various products, and places them in the interior of soil body, on the surface of soil body or between various soil bodies so as to play the role of strengthening or protecting soil body. With the continuous development of the infrastructure of China, the application of the geosynthetic material is more and more extensive, and the permeability of part of the geosynthetic material directly influences the engineering quality. Therefore, it is necessary to perform permeability tests on geosynthetics.

Although the existing geosynthetic material test equipment can meet basic use requirements, the defects are quite obvious, and the existing geosynthetic material test equipment mainly comprises the following components: the detection equipment for the permeability of the geosynthetic material is less, and the embodiment of the permeability is not intuitive and clear enough; when permeability detection is carried out on different materials, the permeation pressure is difficult to control, so that the detection result has certain deviation from the actual result; meanwhile, due to the fact that the detected materials are various, the requirement for detecting the diversified materials needs to be designed.

In order to solve the above problems, a test apparatus for determining the permeability of geosynthetics is proposed in the present application.

SUMMERY OF THE UTILITY MODEL

Objects of the invention

For solving the technical problem who exists among the background art, the utility model provides a test equipment for determining geosynthetic material permeability has the characteristics that the measurement is directly perceived clear and definite, application scope is wide and osmotic pressure is controllable.

(II) technical scheme

In order to solve the technical problem, the utility model provides a test device for measuring permeability of geosynthetics, which comprises a support leg, wherein the support leg is fixedly connected with the bottom surface of a liquid collecting tank, a screen plate is fixedly connected above the liquid collecting tank, a conjunction ring is fixedly connected with the top surface of the screen plate, two sides of the top surface of the screen plate are respectively and fixedly connected with a fixed rod which extends upwards, the top end of the fixed rod is fixedly connected with a slide rod, the upper end and the lower end of the slide rod are respectively and movably sleeved with a threaded rod which penetrates through the left side and the right side of the slide rod, a screw thread at the outer part of the threaded rod is sleeved with a nut, the top end of the slide rod is fixedly connected with a sealing cavity, the middle part of the top surface of the sealing cavity is fixedly sleeved with a sealing ring, the middle part of the sealing, and the bottom end of the telescopic pipe is fixedly sleeved with a rubber block positioned in the inner cavity of the sealing cavity.

Preferably, the number of the supporting legs is four, the four supporting legs are respectively and fixedly connected to the periphery of the bottom surface of the liquid collecting tank, and the bottom surfaces of the four supporting legs are on the same horizontal plane.

Preferably, the collecting tank is the bowl form itself, the notch has been seted up to the lowest of collecting tank bottom surface, and the diameter value of collecting tank is greater than the diameter value of otter board.

Preferably, the number of the slide bars is two, the slide bars are respectively positioned at the left side and the right side of the sealed cavity, the middle part of the side surface of each slide bar is provided with a strip-shaped groove, and the threaded rods penetrate through the strip-shaped grooves and extend outwards.

Preferably, the top end of the telescopic pipe is funnel-shaped, and the length value of the telescopic pipe is larger than the height value of the sealing cavity.

Preferably, the bottom end of the sealing cavity is provided with an annular groove matched with the fit ring.

Preferably, the middle part of the front surface of the sealing cavity is provided with a scale, and the length value of the scale is equal to the height value of the sealing cavity.

The above technical scheme of the utility model has following profitable technological effect: this device is through the design that adopts inflator and barometer, cooperate the used jointly that agrees with the ring simultaneously, when needs carry out the permeability detection operation to geosynthetic material, directly place the material on agreeing with the ring, then recycle the inflator exert pressure to sealed intracavity can, the atmospheric pressure in the sealed intracavity can be artificially controlled, and the water body that can directly flow through the strength of permeability judges, guaranteed that the device is experimental convenient, on directly perceived and controllable basis, can also improve the scope that the device can detect the material, the great problem of traditional device use limitation has been solved.

Drawings

FIG. 1 is a schematic sectional view of the present invention;

fig. 2 is a schematic view of the structure of the present invention;

FIG. 3 is a schematic view of the screen structure of the present invention;

fig. 4 is a schematic diagram of the engagement ring structure of the present invention.

Reference numerals:

1. supporting legs; 2. a liquid collecting tank; 3. a screen plate; 4. a loop is engaged; 5. fixing the rod; 6. a slide bar; 7. a threaded rod; 8. a nut; 9. sealing the cavity; 10. a seal ring; 11. a telescopic pipe; 12. a valve; 13. an air cylinder; 14. a barometer; 15. a rubber block.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

FIG. 1 is a schematic sectional view of the present invention; including supporting leg 1, the quantity of supporting leg 1 has four, and four supporting legs 1 are fixed connection respectively around 2 bottom surfaces of catch basin, and the bottom surface of four supporting legs 1 is on same horizontal plane. Through the design that adopts supporting leg 1 respectively around 2 bottom surfaces of catch basin to the bottom surface of four supporting legs 1 is on same horizontal plane, makes supporting leg 1 not only can provide the effort of support for the device, can also ensure the stable effect of device self, is the feasible important structural support of this device.

As shown in fig. 1, the utility model provides a test equipment for determining geosynthetic material permeability, including collecting tank 2, collecting tank 2 self is the bowl form, and the notch has been seted up to the lower of 2 bottom surfaces of collecting tank, and the diameter value of collecting tank 2 is greater than the diameter value of otter board 3. Because the diameter value of collecting tank 2 is greater than the diameter value of otter board 3, consequently collecting tank 2 can collect the water that overflows on otter board 3 completely, and the collecting tank 2 of bowl form can gather the water that oozes in the inner chamber of collecting tank 2 to outwards discharge through the notch of collecting tank 2 bottom surface.

In this embodiment, there are two sets of slide bars 6 and are located the left and right sides of seal chamber 9 respectively, and the middle part of slide bar 6 side has seted up the strip groove, and threaded rod 7 passes the strip groove and outwards stretches out. The sliding rods 6 on the two sides are respectively arranged on the left side and the right side of the sealed cavity 9, the threaded rod 7 penetrates through the side sliding rod 6, so that the sealed cavity 9 can slide up and down along the track of the sliding rod 6, and after the height value of the sealed cavity 9 is determined, the nut 8 on the threaded rod 7 can be screwed to fix the sealed cavity 9.

As shown in fig. 2, the top end of the telescopic tube 11 is funnel-shaped, and the length of the telescopic tube 11 is greater than the height of the sealed cavity 9. Through adopting the top of flexible pipe 11 to leak hopper-shaped design for the water can be convenient for fill through the top of flexible pipe 11 and add, and the top of flexible pipe 11 is provided with valve 12, can ensure the leakproofness of flexible pipe 11 self after valve 12 screws. Because the length value of the extension tube 11 is fixed, the extension tube 11 can drive the rubber block 15 to move up and down sufficiently in the sealing cavity 9.

It should be noted that the bottom end of the sealing cavity 9 is provided with an annular groove matched with the engaging ring 4. When the sealing cavity 9 moves downwards, the conjunction ring 4 can be embedded into the annular groove on the bottom surface of the sealing cavity 9, materials between the sealing cavity 9 and the conjunction ring 4 can be clamped and fixed, the conjunction ring 4 and the sealing cavity 9 are matched with each other, after the embedding, the sealing performance between the conjunction ring 4 and the sealing cavity can be ensured, and at the moment, when the rubber block 15 moves downwards again, the water body in the inner cavity of the sealing cavity 9 can pass through the materials to be detected.

In this embodiment, the middle of the front surface of the sealed cavity 9 is provided with a scale, and the length value of the scale is equal to the height value of the sealed cavity 9. Through the design that openly sets up the scale at sealed chamber 9 to sealed chamber 9 itself is transparent material, makes the volume of oozing the water in the sealed chamber 9 can observe through the scale, and in certain time, quantitative water is remained more in the sealed chamber 9, can show that the permeability of material is weaker more.

The utility model discloses a theory of operation and use flow: before use, firstly, the rubber block 15 is lifted to the uppermost part of the inner cavity of the sealed cavity 9 through the extension tube 11, a material to be tested is placed on the fit ring 4, the nuts 8 on the two sides are unscrewed, the sealed cavity 9 is pushed downwards to enable the bottom of the sealed cavity 9 to be matched with the fit ring 4 to tightly clamp the material, the nuts 8 on the threaded rod 7 are screwed to fix the position of the sealed cavity 9, then a certain amount of water is injected into the sealed cavity 9 through the extension tube 11, the tightness of the extension tube 11 is enabled by screwing the valve 12, then the sealed cavity 9 is pressurized through the air cylinder 13, the pressure value in the sealed cavity 9 is observed through the barometer 14, the pressurization is stopped when the pressure in the sealed cavity 9 reaches a certain value, at the moment, the rubber block 15 can slowly move downwards due to the difference of the air pressures on the upper side and the lower side of the inner cavity of the sealed cavity 9, and the water below the inner, the geosynthetic material detection operation is realized, when the water in the sealed cavity 9 penetrates through the material and seeps outwards, the seeped water can be gathered to the inner cavity of the liquid collecting tank 2, and the permeability of the material is judged according to the amount of the water flowing out of the sealed cavity 9.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The test equipment for measuring the permeability of the geosynthetics comprises a support leg (1) and is characterized in that the support leg (1) is fixedly connected to the bottom surface of a liquid collecting tank (2), a net plate (3) is fixedly connected to the upper side of the liquid collecting tank (2), a fitting ring (4) is fixedly connected to the top surface of the net plate (3), fixing rods (5) extending upwards are fixedly connected to the two sides of the top surface of the net plate (3) respectively, a sliding rod (6) is fixedly connected to the top end of each fixing rod (5), threaded rods (7) penetrating through the left side and the right side of the sliding rod (6) are movably sleeved at the upper end and the lower end of each sliding rod (6) respectively, a nut (8) is sleeved on one end of the outer portion of each threaded rod (7), a sealing cavity (9) is fixedly connected to the top end of each sliding rod (6), a sealing ring, flexible pipe (11) have been cup jointed in the middle part activity of sealing ring (10), valve (12) are installed on the top of flexible pipe (11), inflator (13) and barometer (14) are installed respectively to the left and right sides of sealed chamber (9) top surface, and the fixed cover in bottom of flexible pipe (11) has connect rubber block (15) that are located sealed chamber (9) inner chamber.

2. The test equipment for determining the permeability of the geosynthetic material according to claim 1, wherein the number of the support legs (1) is four, the four support legs (1) are respectively and fixedly connected to the periphery of the bottom surface of the liquid collecting tank (2), and the bottom surfaces of the four support legs (1) are on the same horizontal plane.

3. The test equipment for measuring the permeability of geosynthetics according to claim 1, wherein the sump (2) itself is bowl-shaped, the lowest part of the bottom surface of the sump (2) is notched, and the diameter of the sump (2) has a value greater than that of the mesh sheet (3).

4. The test equipment for measuring the permeability of the geosynthetics according to claim 1, wherein the number of the slide bars (6) is two, the two slide bars are respectively positioned at the left side and the right side of the sealed cavity (9), a strip-shaped groove is formed in the middle of the side surface of each slide bar (6), and the threaded rod (7) penetrates through the strip-shaped groove and extends outwards.

5. The testing equipment for the determination of the permeability of geosynthetics according to claim 1, wherein the telescoping tube (11) has a funnel-shaped top end, and the length of the telescoping tube (11) has a value greater than the height of the sealed chamber (9).

6. The testing equipment for measuring the permeability of geosynthetics of claim 1 wherein the bottom end of the sealed chamber (9) is provided with an annular groove that mates with the mating ring (4).

7. The testing equipment for determining the permeability of geosynthetics of claim 1 wherein the seal chamber (9) is provided with a scale in the middle of the front face, and wherein the scale has a length equal to the height of the seal chamber (9).