Water-saturated volume-weight detection device for bubble light soil

Abstract

The utility model discloses a water-saturated volume weight detection device for bubble light soil, which relates to the technical field of highway engineering and structurally comprises a water tank with a built-in self-priming pump and used for feeding liquid in the water tank into a still water closed container through a pipeline; the still water closed container is provided with a closed containing cavity and is used for storing liquid or gas, and the bubble light soil standard test piece with the water saturation volume weight to be detected is placed in the closed containing cavity and is immersed in the liquid stored in the closed containing cavity; the air compression assembly is used for compressing air to a set pressure value and conveying compressed air to the closed containing cavity of the still water closed container through a pipeline. According to the utility model, the mechanical property of the bubble light soil in a set pressure and water saturation state can be detected, and detection data can be better provided for a bubble light soil area with a high water level and a high durability requirement as a technical support.

Description

Technical Field

[0001] This utility model relates to the field of highway engineering technology, specifically to a device for detecting the water-saturated bulk density of lightweight soil with air bubbles. Background Technology

[0002] With the rapid development of my country's transportation engineering field, the application of aerated lightweight soil in filling has become more widespread. It has been greatly promoted and applied in areas such as filling karst caves, backfilling abutments, and widening roadbeds. However, particularly in roadbed areas with high water levels, the quality of aerated lightweight soil filling cannot be guaranteed. Therefore, there is a need to invent a device for detecting the saturated bulk density of aerated lightweight soil under high water level conditions, and other parameters, to determine whether it meets the engineering quality requirements. Summary of the Invention

[0003] This utility model addresses the needs and shortcomings of current technological development by providing a device for detecting the water-saturated bulk density of lightweight soil with air bubbles.

[0004] The present invention provides a device for detecting the water-saturated bulk density of lightweight soil with air bubbles. The technical solution adopted to solve the above-mentioned technical problems is as follows:

[0005] A device for detecting the water-saturated bulk density of lightweight soil with air bubbles, the structure of which includes:

[0006] The water tank has a built-in self-priming pump, which is used to send the liquid in the water tank into a static water-sealed container through pipelines.

[0007] A still water sealed container with a sealed cavity for storing liquid or gas. A standard specimen of lightweight soil with bubbles to be tested for saturated water density is placed in the sealed cavity and submerged in the liquid stored therein.

[0008] An air compression assembly is used to compress air to a set pressure value and deliver the compressed air through a pipeline to the sealed cavity of a hydrostatic sealed container.

[0009] Optionally, the top of the static water sealed container is provided with an inlet pipe and an exhaust valve that connect to the sealed cavity; a self-priming pump is connected to the inlet pipe through a pipeline to send the liquid in the water tank into the sealed cavity of the static water sealed container; the sealed cavity is connected to and disconnected from the outside air by opening and closing the exhaust valve.

[0010] The sealed cavity of the static water closed container is equipped with a fixed chamber and a temperature control component. The fixed chamber has multiple fixing slots for placing bubble-filled lightweight soil standard specimens; the temperature control component is used to maintain a constant temperature of the liquid stored in the sealed cavity.

[0011] The bottom of the still water sealed container is equipped with a drain pipe, which is opened to drain the stored liquid in the sealed cavity.

[0012] Further optional, in order to test the saturated bulk density of multiple foamed lightweight soil test blocks at one time, the fixed chambers involved include multiple sets of fixed sub-chambers stacked from top to bottom. Each set of fixed sub-chambers includes an acrylic honeycomb plate and multiple fixed slots fixedly placed on the acrylic honeycomb plate. The fixed slots are bottomless and coverless cubic shapes formed by the butt joint and fixing of multiple side plates, and the depth of the fixed slots is greater than the height of the foamed lightweight soil test block.

[0013] For the fixed sub-compartments of adjacent groups, the upper fixed slot is connected to the lower fixed slot through an acrylic honeycomb plate.

[0014] Preferably, the bottom of the hydrostatic sealed container is equipped with a pulley bracket, which can facilitate the movement of the hydrostatic sealed container.

[0015] Preferably, the hydrostatic sealed container is provided with a sealing cap on the top, which facilitates subsequent maintenance of the hydrostatic sealed container.

[0016] Optionally, the air compression components involved include an air compressor, a combination motor, a rotary gear, an air pipe, a compression cylinder, and a pressure gauge. The combination motor drives the air compressor to draw in air through the rotary gear and compresses it inside the air compressor. The compressed air is then transported to the compression cylinder through the air pipe. The compression cylinder serves as an air storage device to store the compressed air and transports it to the sealed cavity of a hydrostatic sealed container through a pipeline. The pressure gauge is responsible for monitoring the pressure of the compressed air inside the compression cylinder.

[0017] Alternatively, an air inlet valve may be installed on the pipeline involved. By opening the air inlet valve, the air compression assembly delivers compressed air through the pipeline to the sealed cavity of the static water-sealed container.

[0018] One end of the pipe is connected to the air compression assembly via double flanges and sealing gaskets, and the other end passes downward through a hydrostatic sealed container to connect to the sealed cavity. The pipe is sealed and welded to the hydrostatic sealed container.

[0019] Preferably, the pipe in question is a U-shaped pipe with the opening facing downwards. One side of the U-shaped pipe is bent outwards and connected to an air compression assembly, while the other side of the U-shaped pipe passes downwards through a static water-sealed container and connects to a sealed cavity.

[0020] Preferably, the air compression assembly is equipped with wheels at the bottom, which allows for easy movement of the air compression assembly.

[0021] The present invention provides a device for detecting the saturated bulk density of lightweight soil with air bubbles, which has the following advantages compared with the prior art:

[0022] This invention can detect the mechanical properties of bubble-bubbly lightweight soil under set pressure and saturated conditions, providing better testing data as technical support for bubble-bubbly lightweight soil areas with high water levels and high durability requirements. The fixed chamber of this invention can better realize continuous testing of bubble-bubbly lightweight soil, and can analyze the saturated bulk density under different age conditions of 3d, 7d, 14d, and 28d. Attached Figure Description

[0023] Appendix Figure 1 This is a front view structural diagram of the device described in this utility model;

[0024] Appendix Figure 2 This is a front view structural diagram of the air compression assembly described in this utility model.

[0025] The information indicated by the labels in the attached diagram is as follows:

[0026] 1. Self-priming pump; 2. Still water sealed container; 3. Water tank; 4. Air compressor.

[0027] 5. Rotary gear; 6. Air pipe; 7. Compression cylinder; 8. Pressure gauge; 9. Combined motor.

[0028] 10. Pulley bracket; 11. Sealing cover; 12. Water inlet pipe; 13. Air inlet valve; 14. Drain pipe.

[0029] 15. Exhaust valve; 16. Thermostatic component; 17. Fixed compartment; 18. Fixed slot; 19. Pipeline.

[0030] 20. Double flange; 21. Wheels; 22. Sealed cavity; 23. Acrylic honeycomb panel; 24. Piping. Detailed Implementation

[0031] To make the technical solution, the technical problem solved, and the technical effect of this utility model clearer, the technical solution of this utility model will be clearly and completely described below in conjunction with specific embodiments. Example

[0032] Reference Appendix Figure 1 This embodiment proposes a device for detecting the saturated bulk density of lightweight soil with air bubbles, the structure of which includes:

[0033] Water tank 3, with built-in self-priming pump 1, is used to send the liquid in water tank 3 into static water sealed container 2 through pipeline 24;

[0034] The static water sealed container 2 has a sealed cavity 22 for storing liquid or gas. The bubble lightweight soil standard specimen to be tested for saturated water density is placed in the sealed cavity 22 and submerged in the liquid stored therein.

[0035] An air compression assembly is used to compress air to a set pressure value and deliver the compressed air through pipe 19 to the sealed cavity 22 of the static water-sealed container 2.

[0036] The static water sealed container 2 in this embodiment is equipped with an inlet pipe 12 and an exhaust valve 15 at the top, connecting to the sealed cavity 22. A self-priming pump 1 is connected to the inlet pipe 12 via a pipe 24, delivering liquid from the water tank 3 into the sealed cavity 22 of the static water sealed container 2. The sealed cavity 22 is connected to and disconnected from the outside air by opening and closing the exhaust valve 15. The sealed cavity 22 of the static water sealed container 2 is equipped with a fixed chamber 17 and a thermostatic component 16. The fixed chamber 17 has multiple fixing slots 18 for placing bubble-filled lightweight soil standard specimens. The thermostatic component 16 is used to maintain a constant temperature of the liquid stored in the sealed cavity 22, and typically includes a temperature measuring section, a heating section, and a touchscreen for users to view the current temperature and set the heating temperature. A drain pipe 14 is provided at the bottom of the static water sealed container 2, allowing the stored liquid in the sealed cavity 22 to be drained by opening the drain pipe 14.

[0037] Reference Appendix Figure 2 The fixed chamber 17 involved in this embodiment includes multiple sets of fixed sub-chambers stacked sequentially from top to bottom. Each set of fixed sub-chambers includes an acrylic honeycomb plate 23 and multiple fixed slots 18 fixedly placed on the acrylic honeycomb plate 23. The fixed slots 18 are bottomless and lidless cubic shapes formed by the butt joint fixing of multiple side plates, and the depth of the fixed slots 18 is greater than the height of the foamed lightweight soil specimen. For adjacent sets of fixed sub-chambers, the upper fixed slot 18 is connected to the lower fixed slot 18 through the acrylic honeycomb plate 23. Generally speaking, the length, width and height of the fixed slot 18 are 150mm*150mm*150mm, and the size of the foamed lightweight soil standard specimen is 100mm*100mm*100mm.

[0038] The air compression assembly involved in this embodiment includes an air compressor 4, a combined motor 9, a rotating gear 5, an air pipe 6, a compression cylinder 7, and a pressure gauge 8. The combined motor 9 drives the air compressor 4 to draw in air through the rotating gear 5 and compress it inside the air compressor. The compressed air is delivered to the compression cylinder 7 through the air pipe 6. The compression cylinder 7 serves as an air storage device to store compressed air and delivers the compressed air to the sealed cavity 22 of the static water sealed container 2 through the pipe 19. The pressure gauge 8 is responsible for monitoring the pressure of the compressed air inside the compression cylinder 7.

[0039] It should be further explained that the pipeline 19 is equipped with an air inlet valve 13. By opening the air inlet valve 13, the air compression assembly delivers compressed air through the pipeline 19 to the sealed cavity 22 of the static water sealed container 2. One end of the pipeline 19 is connected to the air compression assembly through a double flange 20 and a sealing gasket, and the other end passes downward through the static water sealed container 2 and connects to the sealed cavity 22. The pipeline 19 and the static water sealed container 2 are sealed and welded together.

[0040] The specific process for testing the saturated bulk density of bubble-filled lightweight soil using this embodiment is as follows:

[0041] (1) Weigh the standard specimen of bubble-filled lightweight soil (100mm*100mm*100mm) to determine its mass (m0);

[0042] (2) Place the weighed bubble lightweight soil standard specimen into the designated fixed slot 18 of the sealed cavity 22 of the static water sealed container 2 (it can be placed in the fixed slot 18 at a certain height to meet the subsequent water level requirements).

[0043] (3) When the static water sealed container 2 is confirmed to be in a sealed state, open the air compression assembly, water inlet pipe 12 and self-priming pump 1. Compressed air is delivered to the sealed cavity 22 of the static water sealed container 2 through pipe 19. Water in water tank 3 is delivered to the static water sealed container 2 through water inlet pipe 12 under the action of self-priming pump 1. Observe the water level of static water sealed container 2.

[0044] (4) When the water level in the still water sealed container 2 reaches the set height and covers the bubble lightweight soil standard specimen and the pressure gauge reaches 0.8MPa, close the water inlet pipe 12 and the self-priming pump 1, start timing, and after 30 minutes, close the air compression component and open the exhaust valve 15 to exhaust and release pressure.

[0045] (5) After depressurization for 1 minute, the bubble-filled lightweight soil standard specimen was taken out from the static water sealed container 2, wiped dry, and weighed (m1) to obtain the saturated bulk density γ. 饱水 =m1g. At this point, the dry density of the standard specimen of the bubble-filled lightweight soil is calculated as: γ 干 =m0g, net bulk density is: γ 净 = (m1-m0)g.

[0046] It should be added that the static water sealed container 2 has a viewing window to check the water level in the sealed cavity 22. Through this viewing window, it can be confirmed whether the water level in the static water sealed container 2 has submerged all the air-bubbly lightweight soil standard specimens.

[0047] This invention can test the mechanical properties of air-bubbly lightweight soil in a saturated state, including saturated bulk density, water absorption, moisture content, and saturated compressive strength, wherein:

[0048] Water absorption rate = (m) 吸 m is the weight of the sample after it is saturated with water. 干 (This refers to the weight of the sample after drying).

[0049] Moisture content = (m) 水 m is the weight of the sample after it contains water. 干 (This is the weight of the sample after drying). Example

[0050] Reference Appendix Figure 1 Based on Embodiment 1, the bubble lightweight soil saturated bulk density testing device proposed in this embodiment may further include the following structure:

[0051] Pipe 19 is a U-shaped pipe with its opening facing downwards. One side of the U-shaped pipe is bent outwards and connected to the air compression assembly. The other side of the U-shaped pipe 19 passes downwards through the static water sealed container 2 and connects to the sealed cavity 22.

[0052] The bottom of the still water sealed container 2 is equipped with a pulley bracket 10.

[0053] The top of the still water sealed container 2 is provided with a sealing cap 11.

[0054] The air compression assembly is equipped with wheels 21 at the bottom.

[0055] In summary, the bubble lightweight soil saturated density testing device of this utility model can detect the mechanical properties of bubble lightweight soil under set pressure and saturated conditions, and better provide test data as technical support for bubble lightweight soil areas with high water levels and high durability requirements.

[0056] The above specific examples illustrate the principles and implementation methods of this utility model in detail. These embodiments are only used to help understand the core technical content of this utility model. Based on the above specific embodiments of this utility model, any improvements and modifications made to this utility model by those skilled in the art without departing from the principles of this utility model should fall within the patent protection scope of this utility model.

Claims

1. An apparatus for detecting the saturated unit weight of a bubble light soil, characterized by, The structure comprises: a water tank, which is internally provided with a self-suction pump, and is used for sending the liquid in the water tank into the static water sealed container through a pipeline; the static water sealed container, which has a sealed cavity, is used for storing liquid or gas, and the bubble light soil standard test piece for detecting the saturated water container weight is placed in the sealed cavity and immersed in the stored liquid; an air compression assembly, which is used for compressing air to a set pressure value, and conveying the compressed air to the sealed cavity of the static water sealed container through a pipeline.

2. The apparatus according to claim 1, wherein The top of the static water sealed container is provided with a water inlet pipe and an exhaust valve communicating with the sealed cavity; the self-suction pump is connected to the water inlet pipe through a pipeline to send the liquid in the water tank into the sealed cavity of the static water sealed container; the sealed cavity is communicated with or disconnected from the outside air by opening or closing the exhaust valve; The sealed cavity of the static water sealed container is provided with a fixing bin and a constant temperature assembly, the fixing bin has a plurality of fixing clamping grooves for placing the bubble light soil standard test piece; the constant temperature assembly is used for keeping the temperature of the stored liquid in the sealed cavity constant; The bottom of the static water sealed container is provided with a drain pipe, and the stored liquid in the sealed cavity is discharged by opening the drain pipe.

3. The apparatus according to claim 2, wherein The fixing bin comprises a plurality of groups of fixing sub-bins stacked from top to bottom, each group of fixing sub-bins comprises an acrylic honeycomb plate and a plurality of fixing clamping grooves fixedly placed in the acrylic honeycomb plate, the fixing clamping grooves are formed in the shape of a bottomless and coverless cube by butt jointing a plurality of side plates, and the depth of the fixing clamping grooves is greater than the height of the bubble light soil test block; For adjacent groups of fixing sub-bins, the upper fixing clamping grooves are communicated with the lower fixing clamping grooves through the acrylic honeycomb plate.

4. The apparatus according to claim 2, wherein The bottom of the static water sealed container is provided with a pulley support.

5. The apparatus for detecting the saturated bulk density of the bubble light soil according to claim 2, wherein, The top of the static water sealed container is provided with a sealing cover.

6. The apparatus according to claim 1 or 2 or 3, characterized in that, The air compression assembly comprises an air compressor, a combined motor, a rotating gear, an air pipe, a compression cylinder and a pressure gauge, wherein: the combined motor drives the air compressor to suck in air and compress the air in the air compressor through the rotating gear, the compressed air is conveyed to the compression cylinder through the air pipe, the compression cylinder stores the compressed air as a gas storage device, and the compressed air is conveyed to the sealed cavity of the static water sealed container through a pipeline, and the pressure gauge is responsible for monitoring the pressure condition of the compressed air in the compression cylinder.

7. The apparatus according to claim 6, wherein An air inlet valve is arranged on the pipeline, and the air compression assembly conveys the compressed air to the sealed cavity of the static water sealed container through the pipeline by opening the air inlet valve; One end of the pipeline is connected to the air compression assembly through double flanges and a sealing gasket, and the other end passes through the static water sealed container downward to communicate with the sealed cavity, and the pipeline and the static water sealed container are sealingly welded.

8. The apparatus according to claim 7, wherein The pipeline is a U-shaped pipe with an opening downward, one side of the U-shaped pipe is bent outward to connect the air compression assembly, and the other side of the U-shaped pipe passes through the static water sealed container downward to communicate with the sealed cavity.

9. The apparatus according to claim 6, wherein The bottom of the air compression assembly is provided with a traveling wheel.

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