Rotary spraying type remolded loess sample preparation device

Abstract

The utility model relates to a rotary spraying type remolded loess sample preparation device. In the sample preparation process of an existing remolded loess sample preparation device, prepared loess samples are uneven in wetting and single in structure, and therefore various different soil conditions cannot be simulated. The device comprises a material storage tank and a sample preparation barrel, a piston is arranged in the sample preparation barrel, the interior of the sample preparation barrel is divided into an upper cavity and a lower cavity by the piston, the volumes of the upper cavity and the lower cavity can be changed, a high-pressure rotary nozzle is arranged at the upper end of the piston, and a detachable protective cover is arranged at the upper end of the sample preparation barrel; the material storage tank is arranged on the outer side of the sample preparation barrel, one end of the material storage tank is connected with high-pressure air, and the other end of the material storage tank penetrates through the sample preparation barrel and is connected with the high-pressure rotating nozzle. According to the utility model, the high-pressure rotary nozzle is arranged to spray out a sample in a rotary manner, so that the uniform wetting of the loess sample is ensured, a good foundation is created for subsequent procedures, and samples with different pore structures can be prepared according to different proportions of loess and water in the storage tank.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of soil testing technology of geotechnical engineering, and particularly relates to a rotary jetting type remolded loess sampling device. BACKGROUND

[0002] Currently, there are two categories of tests for loess properties in general: one is in-situ test, that is, under the premise that the soil is not disturbed, the engineering properties of loess are tested and measured on site by using various instruments and equipment; the other is indoor test, that is, the original loess or remolded loess sample is tested in the laboratory.

[0003] In industrial and civil construction, loess, whether as a highway subgrade or a building foundation, is disturbed by ramming or rolling, that is, it exists in the form of remolded soil, so it is necessary to study the various properties of remolded loess samples. However, in the existing remolded loess sampling device, the loess samples prepared are not uniformly moistened, and the loess samples prepared have a single structure, which cannot simulate various soil conditions.

[0004] Therefore, there is an urgent need for a remolded loess sampling device that can ensure uniform moistening of loess samples and prepare loess samples with different pore structures. SUMMARY

[0005] The utility model aims to provide a rotary jetting type remolded loess sampling device to at least solve the problem of uneven moistening and single structure of loess samples prepared by the existing remolded loess sampling device.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A rotary jetting type remolded loess sampling device, comprising a storage tank and a sampling cylinder; a piston is arranged in the sampling cylinder, which divides the sampling cylinder into two cavities with variable volumes; a high-pressure rotary nozzle is arranged at the upper end of the piston; and a detachable protective cover is arranged at the upper end of the sampling cylinder.

[0008] The storage tank is arranged outside the sampling cylinder, one end of the storage tank is connected to high-pressure air, and the other end penetrates the sampling cylinder and is connected to the high-pressure rotary nozzle.

[0009] Further, an input hole is formed in one side wall of the storage tank, an input pipe is arranged in the input hole, and the input pipe is connected to high-pressure air.

[0010] Further, a delivery hole is formed in the other side wall of the storage tank opposite to the input hole, and a delivery pipe is arranged in the delivery hole.

[0011] Further, the input hole and the conveying hole are located at the same height and are arranged close to the bottom of the storage tank.

[0012] Further, the input pipe and the conveying pipe are flush with the inner side wall of the storage tank.

[0013] Further, the bottom of the sample preparation cylinder is provided with a connecting hole, and the conveying pipe is connected from the conveying hole of the storage tank to the connecting hole.

[0014] Further, the piston is provided with a through hole, and the conveying pipe is connected from the connecting hole of the sample preparation cylinder to the through hole and to the high-pressure rotating nozzle.

[0015] Further, the connecting hole is arranged in alignment with the through hole.

[0016] Further, the protective cover is in the shape of a hollow cylinder, and the bottom of the cylinder is open.

[0017] Further, the sample preparation cylinder is in the shape of a hollow cylinder, and the top is open, and the outer diameter of the sample preparation cylinder is smaller than the inner diameter of the protective cover.

[0018] Compared with the prior art, the beneficial effects of the present application are as follows:

[0019] The present application provides a rotating and spraying type remolded loess sample preparation device, which is provided with a storage tank and a sample preparation cylinder, the mixture of loess and water is arranged in the storage tank, and the storage tank is connected with high-pressure air and the sample preparation cylinder, respectively, the piston and the high-pressure rotating nozzle are arranged in the sample preparation cylinder, the high-pressure air enters the storage tank, and the mixture of loess and water is blown into the conveying pipe until it is sprayed from the high-pressure rotating nozzle, so that the uniform wetting of the loess sample is ensured, and a good foundation is created for the subsequent process; and the different proportions of loess and water in the storage tank can prepare samples with different pore structures, so that various different soil conditions can be simulated, and the present application has high production capacity and is suitable for large-scale soil sample preparation and also suitable for small laboratory research. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the following embodiment or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain the drawings of other embodiments according to these drawings without creating any creative labor.

[0021] Figure 1 is a plane schematic view of the present application;

[0022] The figure is marked as:

[0023] 1-Storage tank, 2-Sample preparation cylinder, 3-Input pipe, 4-Piston, 5-High-pressure rotary nozzle, 6-Protective cover, 7-Conveying pipe. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0025] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0027] Example:

[0028] like Figure 1 As shown, this embodiment provides a rotary jet type remolded loess sample preparation device, including a storage tank 1 and a sample preparation cylinder 2. The storage tank 1 contains a mixture of loess and water in the required proportions for the test.

[0029] Specifically, a piston 4 is fixed inside the sample preparation cylinder 2. A high-pressure rotary nozzle 5 is provided at the upper end of the piston 4 for spraying out a mixture of remolded loess and high-pressure gas. A storage tank 1 is located outside the sample preparation cylinder 2. One end of the storage tank 1 is connected to high-pressure air through an input pipe 3, and the other end passes through the piston 4 of the sample preparation cylinder 2 through a delivery pipe 7 and is connected to the high-pressure rotary nozzle 5. In this embodiment, the high-pressure rotary nozzle 5 is existing technology.

[0030] The side wall of the storage tank 1 is provided with an input hole, and the other side wall opposite to the input hole is provided with a conveying hole, the diameter and height of the input hole and the conveying hole are consistent, and the input hole is located close to the bottom of the storage tank 1, the input pipe 3 is welded and fixed in the input hole, the input pipe 3 is connected with high-pressure air, and the high-pressure air is sent into the storage tank 1, the conveying pipe 7 is welded and fixed in the conveying hole, and the loess and water mixture in the storage tank 1 is blown into the conveying pipe 7 through the high-pressure air, the input pipe 3 and the conveying pipe 7 are flush with the inner side wall of the storage tank 1, and in the embodiment, the material of the conveying pipe 7 is soft material.

[0031] The sample preparation cylinder 2 is in a hollow cylindrical shape, and the top is open, and the top opening of the sample preparation cylinder 2 is provided with a detachable protective cover 6.

[0032] The protective cover 6 is in a hollow cylindrical shape, and the bottom of the cylinder is open, the inner diameter of the protective cover 6 is 1-2mm larger than the outer diameter of the sample preparation cylinder 2, the protective cover 6 is convenient to cover on the top opening of the sample preparation cylinder 2, and in the embodiment, the protective cover 6 is of water-permeable stone material, which is convenient for water permeation and exhaust during sample preparation.

[0033] The diameter of the piston 4 is 1-2mm smaller than the inner diameter of the sample preparation cylinder 2, which is convenient for the up-down movement of the piston 4, when the device is not working, the piston 4 is located at the top end inside the sample preparation cylinder 2, and when working, the piston 4 can divide the inside of the sample preparation cylinder 2 into two cavities with changeable volume, and the upper end surface of the piston 4 is provided with a water-permeable stone.

[0034] In the embodiment, the bottom of the sample preparation cylinder 2 is provided with a connecting hole, and the piston 4 is provided with a through hole corresponding to the connecting hole at the bottom of the sample preparation cylinder 2, the conveying pipe 7 is connected from the conveying hole of the storage tank 1, and sequentially penetrates the connecting hole at the bottom of the sample preparation cylinder 2 and the through hole on the piston 4, the end surface of the conveying pipe 7 is flush with the upper end surface of the through hole, and the conveying pipe 7 is welded and connected with the high-pressure rotating nozzle 5, so that the high-pressure rotating nozzle 5 is located above the piston 4, the conveying pipe 7 is welded and fixed in the through hole, the loess and water mixture in the storage tank 1 is blown into the conveying pipe 7 by high-pressure air, and is sprayed out from the high-pressure rotating nozzle 5, when sprayed, the upward spraying force gives the piston 4 a downward reaction force, so that the piston 4 moves downward, so that the mixture of loess, water and high-pressure air is obtained in the cavity above the piston 4, and the prepared sample is uniformly distributed and wetted by rotating and spraying through the high-pressure rotating nozzle 5, after the sample is prepared, the protective cover 6 is removed and the sample is pushed out through the piston 4, so as to collect the sample.

[0035] The pore structure of the sample sprayed out from the high-pressure rotating nozzle 5 can be adjusted by the ratio of loess and water in the storage tank 1, different ratios of loess and water can be used to prepare samples with different pore structures, so as to facilitate the simulation of various soil conditions.

[0036] In the embodiment, the sample is evenly wetted by the rotation and spraying of the high-pressure rotating nozzle 5, and samples with different pore structures can be prepared by using loess and water in different proportions, so that the embodiment has high production capacity, and the device is suitable for large-scale soil sample preparation and small laboratory research.

[0037] The working process of the embodiment is as follows:

[0038] The mixture of loess and water in the required proportion is put into the storage tank 1, high-pressure air enters the storage tank 1, and the mixture of loess and water is blown into the conveying pipe 7 until it is sprayed from the high-pressure rotating nozzle 5. The reaction force of the spray force makes the piston 4 located at the top end inside the sample preparation cylinder 2 move downward, so that the sample is prepared in the cavity above the piston 4.

[0039] The above application of specific examples is used to describe the utility model, which is only used to help understand the utility model, and does not limit the utility model. For the skilled person in the art to which the utility model belongs, according to the idea of the utility model, a number of simple deductions, deformations or substitutions can be made.

Claims

1. A jet grouting loess reshaping sampling device, characterized in that: It comprises a storage tank (1) and a sample preparation cylinder (2); A piston (4) is arranged in the sample preparation cylinder (2), which divides the sample preparation cylinder (2) into two cavities with variable volumes, and a high-pressure rotating nozzle (5) is arranged at the upper end of the piston (4), and a detachable protective cover (6) is arranged at the upper end of the sample preparation cylinder (2); The storage tank (1) is arranged outside the sample preparation cylinder (2), one end of the storage tank (1) is connected with high-pressure air, and the other end penetrates the sample preparation cylinder (2) and is connected with the high-pressure rotating nozzle (5).

2. The sample preparation device for remolded loess according to claim 1, wherein: An input hole is formed in one side wall of the storage tank (1), and an input pipe (3) is arranged in the input hole, and the input pipe (3) is connected with high-pressure air.

3. The sample preparation device for remolded loess according to claim 2, wherein: A delivery hole is formed in the other side wall of the storage tank (1) opposite to the input hole, and a delivery pipe (7) is arranged in the delivery hole.

4. The sample preparation device for remolded loess according to claim 3, wherein: The input hole and the delivery hole are arranged at the same height and close to the bottom of the storage tank (1).

5. The sample preparation device for remolded loess according to claim 3, wherein: The input pipe (3) and the delivery pipe (7) are arranged flush with the inner side wall of the storage tank (1).

6. The sample preparation device for remolded loess according to claim 3, wherein: A connecting hole is formed in the bottom of the sample preparation cylinder (2), and the delivery pipe (7) is connected from the delivery hole of the storage tank (1) to the connecting hole.

7. The sample preparation device for remolded loess according to claim 6, wherein: A through hole is formed in the piston (4), and the delivery pipe (7) penetrates the connecting hole of the sample preparation cylinder (2) to the through hole and is connected with the high-pressure rotating nozzle (5).

8. The sample preparation device for remolded loess according to claim 7, wherein: The connecting hole is arranged in alignment with the through hole.

9. The sample preparation device for remolded loess according to claim 1, wherein: The protective cover (6) is in the shape of a hollow cylinder, and the bottom of the cylinder is open.

10. The sample preparation device for remolded loess according to claim 1, wherein: The sample preparation cylinder (2) is in the shape of a hollow cylinder, and the top is open, and the outer diameter of the sample preparation cylinder (2) is smaller than the inner diameter of the protective cover (6).

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