CN215511620U

CN215511620U - Soil distribution device in geotechnical test

Info

Publication number: CN215511620U
Application number: CN202120270106.9U
Authority: CN
Inventors: 董鸾花; 赵乐; 田艺菀
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-01-14
Anticipated expiration: 2031-01-29

Abstract

The utility model discloses a soil preparation device in a geotechnical test, which comprises a water storage device, a weighing device, an adjusting spray head, a stirring basin and a stirring device, wherein the water storage device is arranged on the upper portion of the water storage device; the stirring basin is provided with an inner cavity, and the stirring device is positioned in the inner cavity of the stirring basin; a top cover is arranged at the top of the stirring basin and buckled with the stirring basin; the water storage device is arranged on the weighing device, scales are arranged on the water storage device, a water outlet of the water storage device is connected with a water inlet of the micro water pump, the adjusting spray head is located at the bottom of the top cover, a water outlet of the micro water pump is connected with a water inlet of the adjusting spray head, and the adjusting spray head is arranged towards the bottom of the stirring basin. The water content of the soil body that is joined in marriage can accurate control to the basin that conveniently stirs washs.

Description

Soil distribution device in geotechnical test

Technical Field

The utility model belongs to the field of indoor geotechnical test equipment, and relates to a soil distribution device in a geotechnical test.

Background

In some construction areas with poor surface foundation soil bearing capacity, how to achieve the requirement of building safety by the design of compacting, improving, piling or replacing and filling the foundation soil by the existing means is the key point in the current engineering construction. The method needs to perform corresponding sampling on foundation soil of a construction site in advance and perform indoor geotechnical test analysis, wherein the method comprises the steps of disturbing the blending of the soil body under different water contents, blending and improving the soil body under different types of blending materials and the like, so that the physical and mechanical properties of the soil body under different treatment effects can be contrastively analyzed at a later stage to determine the optimal treatment scheme. Therefore, how to correspondingly and accurately prepare the remolded soil body to achieve the optimal test requirement has very important significance for accurately measuring the optimized physical and mechanical properties of the foundation soil body.

At present, in the soil preparation link of most indoor soil tests, due to the lack of corresponding test instruments, test personnel mostly adopt a manual stirring method to prepare soil samples. Taking the remolded soil with different water contents as an example, the main test steps are that the soil body of an original foundation corresponding to an engineering field is crushed, dried and sieved, then the dried soil body with certain mass is weighed by an electronic scale and is put into a clean stirring basin, then the soil body is humidified by utilizing the vaporific steam sprayed by a spray can, simultaneously the soil body is stirred manually to ensure that all the soil bodies in the basin are synchronously and uniformly humidified, the water distribution and stirring process is continued until the soil body reaches the specific water content, the water content is generally determined by the ratio of the mass of water to the mass of dry soil, then the bulk soil body with the specific water content is stored in a sealed way, and the next test operation such as sample pressing is carried out until the standing time meeting the standard requirement of soil test. If the soil body is disturbed to be improved by the admixture, the optimized material with the corresponding quality is uniformly stirred and added before or after water distribution according to the test requirements, and then operations such as water supplementing stirring, sealing storage or sample pressing are carried out.

However, in the current soil preparation humidification and admixture process in soil tests, certain defects exist: 1. in the water distribution stirring process of air-drying the soil body, because the experimenter is different to this allotment process proficiency, when utilizing the watering can to carry out the humidification operation to the soil body, often can spill the vaporific steam of spun around the stirring basin inner wall or even spout outside the basin. On one hand, the water gathered around the inner wall of the stirring basin is stranded, and stirring soil around the inner wall forms soil balls with high water content and different sizes, so that the integral uniformity of the soil body blending is influenced; on the other hand, partial vaporific water vapor is sprayed out of the stirring basin due to misoperation, so that the water content of the soil body obtained through weighing calculation generates large errors. 2. In the process of water distribution and stirring of a test soil body, the control of the sprayed water amount is usually obtained by weighing the total mass of the sprinkling can and the water for many times, the process is relatively complicated, and excessive spraying is easily caused if the process is not noticed slightly. 3. Because whole allotment sprays steam work and all accomplishes in the stirring basin manual stirring, does not have in this process and covers the processing, so the allotment soil of different moisture content also has certain requirement to test environment, if join in marriage the higher and air convection of soil ambient temperature and be very fast, can make to join in marriage the moisture in the soil body of bulk in the soil basin and take place great evaporation, further influence the accuracy of joining in marriage soil body moisture content. 4. When a plurality of groups of test soil samples need to be prepared, the stirring basin is often required to be manually cleaned, and the test efficiency is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide the soil mixing device in the soil test, which can accurately control the water content of the mixed soil body and is convenient for cleaning the stirring basin.

In order to achieve the purpose, the utility model adopts the following technical scheme to realize the purpose:

a soil preparation device in a soil test comprises a water storage device, a weighing device, an adjusting spray head, a stirring basin and a stirring device;

the stirring basin is provided with an inner cavity, and the stirring device is positioned in the inner cavity of the stirring basin; a top cover is arranged at the top of the stirring basin and buckled with the stirring basin; the water storage device is arranged on the weighing device, scales are arranged on the water storage device, a water outlet of the water storage device is connected with a water inlet of the micro water pump, the adjusting spray head is located at the bottom of the top cover, a water outlet of the micro water pump is connected with a water inlet of the adjusting spray head, and the adjusting spray head is arranged towards the bottom of the stirring basin.

Preferably, agitating unit includes rotating electrical machines, helical blade and L shape blade, and the rotating electrical machines setting is on the top cap, is located top cap central point and puts, and the output shaft of rotating electrical machines passes the top cap and stretches into the stirring basin, and the helical blade setting is located the inner chamber middle part at the output shaft, and L shape blade setting is located inner chamber bottom position at the output shaft, and L shape blade base is close to stirring basin inner chamber bottom, and L shape blade side is close to stirring basin inner chamber lateral wall.

Preferably, a water stop valve is arranged between the water outlet of the micro water pump and the adjusting nozzle.

Preferably, a guide pipe is arranged between the water outlet of the micro water pump and the adjusting spray head and is positioned at the bottom of the top cover, the guide pipe is arranged in a diamond frame shape, and each angle of the diamond frame is provided with one adjusting spray head.

Preferably, the bottom of the stirring basin is in an inverted cone shape, the middle part of the bottom of the stirring basin is provided with a discharge hole, and the discharge hole is provided with a rubber plug.

Further, a plurality of supporting legs are arranged at the bottom of the stirring basin.

Preferably, the top cover and the stirring basin are buckled by a lock catch.

Compared with the prior art, the utility model has the following beneficial effects:

the adjusting spray head can realize integral uniform spraying in the soil mixing process under different water contents, and can effectively prevent the problem of uneven integral soil mixing water content caused by the condensation and stranded retention of the sprayed water mist on the side wall of the stirring container by adjusting the size of the spraying range. The water quantity added at different moments of the test soil body is continuously monitored by means of the weighing device, and the soil sample can be accurately controlled to be allocated under different water contents by the micro water pump capable of controlling the water flow pressure at all times. Through top cap and stirring basin lock, make stirred vessel be closed at the course of the work, receive external environment influence less at joining in marriage native in-process, can effectively control the evaporation of water problem of joining in marriage native in-process, make the actual water yield that adds of joining in marriage native in-process under the different moisture content of reality keep unanimous with the actual water demand of stirring the soil body. The spraying range size and the miniature water pump water flow pressure are adjusted through the adjusting nozzle, the stirring container is cleaned through the stirring mechanism, convenience and rapidness are achieved, and the next test soil body allocation work can be performed quickly.

Further, the helical blade can stir the middle part of the soil body, the L-shaped blade can stir the soil body at the bottom and on the side wall of the stirring basin, and the whole test soil body in the stirring basin can be uniformly stirred.

Further, the water stop valve can be opened and closed in time or the size of water flow can be adjusted, and accurate control is provided for soil sample allocation under different water contents.

Furthermore, the guide pipe is arranged into a diamond-shaped frame, and each corner of the diamond-shaped frame is provided with an adjusting spray head, so that the spray can cover the whole soil body.

Furthermore, the bottom and the discharge gate of back taper can make things convenient for the ejection of compact after the soil body allotment is accomplished.

Further, the supporting leg can make the stirring basin remain stable under the state that the bottom is the back taper to make stirring basin and holding surface leave the clearance, conveniently place the collection device of the soil body below the stirring basin.

Drawings

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

FIG. 2 is a schematic view of a blade configuration of the present invention;

FIG. 3 is a top view of a blade of the present invention;

FIG. 4 is a schematic diagram of a diamond frame structure of the catheter of the present invention.

Wherein: 1-supporting legs; 2-a weighing device; 3, a water storage device; 4-a rubber hose; 5, locking and buckling; 6-top cover; 7-a miniature water pump; 8-a water stop valve; 9-a rotating electrical machine; 10-fixing the sleeve; 11-a catheter; 12-adjusting the spray head; 13-rotating rod; 14-helical blades; 15-L shaped blades; 16-a stirring basin; 17-discharge hole.

Detailed Description

The utility model is described in further detail below with reference to the accompanying drawings:

as shown in fig. 1, the soil preparation device in the soil test of the present invention includes a water storage device 3, a weighing device 2, a spraying mechanism, a stirring basin 16 and a stirring device.

The stirring basin 16 is provided with an inner cavity, and the stirring device is positioned in the inner cavity of the stirring basin 16; the top of the stirring basin 16 is provided with a top cover 6, and the top cover 6 is buckled with the stirring basin 16.

The water storage device 3 is a wide-mouth bottle with a certain capacity and scale marks and a rubber bottle plug with a hole with a certain size; scales are arranged on the water storage device 3, so that the volume of liquid can be conveniently obtained; the water storage device 3 is arranged on the weighing device, and the weighing device is convenient to acquire the weight of liquid.

The eccentric position is provided with the feed inlet of flip formula on top cap 6, and top cap 6 top is fixed with miniature pump 7, stagnant water valve 8, steerable rotational speed and the rotating electrical machines 9 and the hasp 5 that turn to of steerable rivers pressure, and the fixed pipe 11 in top cap 6 bottom, the water inlet of pipe 11 is worn out and is connected with stagnant water valve 8 at top cap 6 top by top cap 6 bottom. The rotating motor 9 is arranged on the top cover 6 and is positioned at the center of the top cover 6, and the rotating rod 13 fixed with the blades is connected with an output shaft of the rotating motor 9 at the bottom of the top cover 6 through a fixed sleeve 10.

The spraying mechanism comprises a micro water pump 7, a water stop valve 8, a rubber hose 4, a conduit 11 and an adjusting nozzle 12; the connection mode of each component of the spraying mechanism is that a water inlet hole of the miniature water pump 7 is connected with a rubber hose 4 connected with the water storage device 3, a water outlet of the miniature water pump 7 is connected with the rubber hose 4 connected with the water stop valve 8, the other end of the water stop valve 8 is connected with a water inlet of the conduit 11, and an adjusting spray head 12 is arranged at the water outlet of the conduit 11.

The four adjusting nozzles 12 of the spraying mechanism are communicated with the water storage device 3 sequentially through the water outlet of the conduit 11, the water inlet of the conduit 11, the water stop valve 8, the rubber hose 4, the miniature water pump 7 capable of controlling water flow pressure and the rubber hose 4.

As shown in fig. 4, the conduit 11 is in a welding form of a diamond frame, one side perpendicular to the plane of the diamond frame is welded with a water inlet of a section of conduit 11, four corners of the other side perpendicular to the plane of the diamond conduit 11 are respectively welded with water outlets of a section of conduit 11, and the water outlets of the conduit 11 are provided with adjusting nozzles 12 capable of adjusting the size of the spraying range.

The stirring mechanism comprises a rotating motor 9, a fixed sleeve 10, a rotating rod 13, a helical blade 14 and an L-shaped blade 15; the mixing container comprises a top cover 6, a mixing basin 16, a hinge and a supporting leg 1. The connection mode of each component of the stirring mechanism is that the output shaft of the rotating motor 9 is connected with one end of the fixed sleeve 10, the other end of the fixed sleeve 10 is connected with the rotating rod 13, as shown in fig. 2 and 3, the spiral blade 14 is arranged at the middle part of the inner cavity of the rotating rod 13, the L-shaped blade 15 is arranged at the bottom part of the inner cavity of the rotating rod 13, the bottom edge of the L-shaped blade 15 is close to the bottom part of the inner cavity of the stirring basin 16, and the side edge of the L-shaped blade 15 is close to the side wall of the inner cavity of the stirring basin 16.

6 both sides of top cap and stirring basin 16 adopt 5 locks of hasp, and 16 bottoms of stirring basin are the back taper, and 16 bottoms middle parts of stirring basin are provided with discharge gate 16, and discharge gate 16 is provided with the rubber buffer, and 16 bottom symmetries of stirring basin are provided with two sets of four supporting legs 1 altogether.

Taking the process of preparing the bulk test soil with different water contents as an optional embodiment of the utility model, before formally preparing the soil, firstly adding a proper amount of test water or other test reagents into a wide-mouth bottle with a rubber bottle stopper for later use; further, a wide-mouth bottle with a rubber bottle stopper is connected with the spraying mechanism through a rubber hose 4, and a micro water pump 7 capable of adjusting water flow pressure and a water stop valve 8 are started to completely discharge gas in the spraying mechanism, so that the influence on the accuracy of a result measured by the subsequent weighing device 2 due to the existence of the gas is prevented; further, adjusting the adjusting spray head 12 to ensure that the maximum cross-sectional area of the sprayed atomized water vapor is properly smaller than the maximum cross-sectional area of the stirring basin 16 so as to prevent the sprayed water vapor from condensing on the inner wall of the stirring basin 16 and remaining as strands to influence the uniformity of the tested soil body, and closing the micro water pump 7; further, air-dried soil with required mass is weighed in advance by the weighing device 2 and sieved; further, the top cover 6 is opened, the weighed soil body is poured into the stirring basin 16 and covered with the top cover 6, the rotating motor 9 capable of controlling the rotating speed and the rotating direction is started, the clockwise rotation of the output shaft of the rotating motor 9 is observed in the overlooking direction, and the rotating speed is slowly adjusted to the proper rotating speed from slow to fast; further, the micro water pump 7 is started to distribute water and stir, and the change of the water consumption quality reflected by the weighing device 2 is recorded all the time; further, when the water quantity required by the soil body to be tested reaches the target test requirement, the water stop valve 8 and the micro water pump 7 are closed in sequence, and the rotating motor 9 is closed after the test soil body in the stirring basin 16 is fully and uniformly stirred; further, the rotating motor 9 capable of controlling the rotating speed and the steering is started, and the output shaft of the rotating motor 9 rotates anticlockwise when viewed from the overlooking direction; further, the rubber stopper of the discharge hole 16 at the bottom of the stirring basin 16 is taken down, and the bulk test soil body with the specific water content is taken.

The method takes the process of blending the bulk soil with different water contents and adding admixtures such as lime, cement, bentonite and the like as an optional embodiment of the utility model, wherein the process of adding water into a wide-mouth bottle with a rubber bottle stopper and debugging initial equipment is consistent with the operation process of blending the bulk test soil with different water contents; further, air-dried soil bodies with required mass and additional admixture are weighed in advance by means of a weighing device 2; further, the top cover 6 is opened, the weighed soil body is poured into the stirring basin 16 and covered with the top cover 6, the rotating motor 9 capable of controlling the rotating speed and the rotating direction is started, the clockwise rotation of the output shaft of the rotating motor 9 is observed in the overlooking direction, and the rotating speed is slowly adjusted to the proper rotating speed from slow to fast; further, the operation of adding the admixture or spraying atomized water vapor is carried out successively according to the test requirements, wherein the admixture is added through the admixture adding hole in the top cover 6 once or for multiple times according to the test requirements, and the operation of adding the admixture and spraying atomized water vapor is carried out separately and cannot be carried out simultaneously; further, when the water quantity required by the soil body to be tested and the quality of the added admixture meet the target test requirements, the water stop valve 8 and the micro water pump 7 are closed in sequence, and the rotating motor 9 is closed after the test soil body in the stirring basin 16 is fully and uniformly stirred; further, the rotating motor 9 capable of controlling the rotating speed and the steering is started, and the output shaft of the rotating motor 9 rotates anticlockwise when viewed from the overlooking direction; further, the rubber stopper of the discharge port 16 at the bottom of the stirring basin 16 is taken down, and the bulk test soil body with the specific water content and the admixture added is taken.

The self-cleaning process of the multifunctional soil distribution device in the geotechnical test is taken as an optional embodiment of the utility model, after the single soil distribution test operation is completed, the miniature water pump 7 capable of adjusting the water flow pressure and the water stop valve 8 are started, and the water flow pressure is properly increased to improve the flushing effect of the adjusting nozzle 12; further, the rotating motor 9 capable of controlling the rotating speed and the rotating direction is started, and the rotating speed is properly adjusted to clean the inner wall of the stirring basin 16, the helical blades 14 and the L-shaped blades 15; further, the rubber stopper of the discharge hole 16 at the bottom of the stirring basin 16 is taken down to enable the wastewater to flow out, and the micro water pump 7, the water stop valve 8 and the rotating motor 9 are closed when the water flow is clear.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.

Claims

1. The soil preparation device in the geotechnical test is characterized by comprising a water storage device (3), a weighing device (2), an adjusting spray head (12), a stirring basin (16) and a stirring device;

the stirring basin (16) is provided with an inner cavity, and the stirring device is positioned in the inner cavity of the stirring basin (16); a top cover (6) is arranged at the top of the stirring basin (16), and the top cover (6) is buckled with the stirring basin (16); the water storage device (3) is arranged on the weighing device, scales are arranged on the water storage device (3), a water outlet of the water storage device (3) is connected with a water inlet of the micro water pump (7), the adjusting spray head (12) is located at the bottom of the top cover (6), a water outlet of the micro water pump (7) is connected with a water inlet of the adjusting spray head (12), and the adjusting spray head (12) is arranged towards the bottom of the stirring basin (16).

2. The soil distribution device in the soil test according to claim 1, wherein the stirring device comprises a rotating motor (9), a helical blade (14) and an L-shaped blade (15), the rotating motor (9) is arranged on the top cover (6) and is positioned at the center of the top cover (6), an output shaft of the rotating motor (9) penetrates through the top cover (6) and extends into the stirring basin (16), the helical blade (14) is arranged at the middle part of the inner cavity of the output shaft, the L-shaped blade (15) is arranged at the bottom part of the inner cavity of the output shaft, the bottom edge of the L-shaped blade (15) is close to the bottom of the inner cavity of the stirring basin (16), and the side edge of the L-shaped blade (15) is close to the side wall of the inner cavity of the stirring basin (16).

3. The soil distribution device in the soil test according to claim 1, wherein a water stop valve (8) is arranged between the water outlet of the micro water pump (7) and the regulating nozzle (12).

4. The soil distribution device in the soil test according to claim 1, wherein a conduit (11) is arranged between the water outlet of the micro water pump (7) and the adjusting spray head (12), the conduit (11) is positioned at the bottom of the top cover (6), the conduit (11) is arranged in a diamond frame, and each corner of the diamond frame is provided with one adjusting spray head (12).

5. The soil distribution device in the geotechnical test according to claim 1, wherein the bottom of the stirring basin (16) is inverted cone-shaped, the middle part of the bottom of the stirring basin (16) is provided with a discharge hole (16), and the discharge hole (16) is provided with a rubber plug.

6. The soil proportioning device in the soil test according to claim 5, wherein the bottom of the stirring basin (16) is provided with a plurality of supporting legs (1).

7. The soil distribution device in the soil test according to claim 1, wherein the top cover (6) is buckled with the stirring basin (16) by a lock catch (5).