Automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and treatment

Abstract

The utility model discloses an automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and treatment, and belongs to the technical field of geotechnical survey sample treatment devices. The assembly comprises a sampling cup, a sample cylinder, a stirring piece, a bent pipe, a connecting piece, a pump and a power mechanism. The upper part of the stirring piece is connected with a power mechanism through a connecting piece; the power mechanism drives the stirring piece to axially reciprocate along the sample cylinder. The stirring piece is provided with a rod penetrating through the cavity in the length direction. One end of the bent pipe is a straight pipe section inserted into the rod cavity, the other end of the bent pipe is communicated with a liquid inlet of the pump, and a liquid outlet of the pump is opposite to the sampling cup. During testing, the stirring piece is inserted into the sample cylinder and is driven by the power mechanism to reciprocate to stir a sample. And the pump sucks the sample in the sample cylinder through the bent pipe and transfers the sample into the sampling cup. According to the assembly, automation of sample stirring and mixed sample suction is achieved, on one hand, the workload of experimenters is greatly reduced, and on the other hand, experimental errors and abrasion and damage of experimental apparatuses are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of geotechnical survey sample processing devices, and specifically relates to an automatic stirring and sucking component for geotechnical engineering soil sample analysis and processing, and more specifically, to an automatic stirring and sucking component suitable for a pipette method for soil sample particle analysis. Background Art

[0002] Before designing any construction project, a geotechnical survey of the construction site is necessary to fully understand the physical and mechanical properties of the foundation and surrounding rock and soil, as well as other geological conditions. Determining the gradation of soil particles within the foundation is a crucial consideration for building design and a crucial factor in ensuring smooth and safe construction. Furthermore, determining the distribution of various particle sizes within the soil is crucial for determining soil designation and its intended use.

[0003] Currently, the particle analysis pipette method is primarily used to determine soil particle distribution and gradation. Generally, due to the wide range of particle size distribution in soil, measurements require mixing soil with water to form a suspension, stirring the suspension up and down several times along a sample tube, then aspirating the suspension and measuring the particle size of the particles in the suspension. Each sample requires a suspension at a different settling depth for measurement. While this method is relatively scientific, it presents the following issues:

[0004] First, the workload is high. Because each sample requires extracting suspensions at different sedimentation depths, a single sample requires repeated stirring, extraction, and transfer of the suspension multiple times. Furthermore, the sheer number of soil samples collected at the site itself is enormous, requiring a significant amount of repetitive work. This not only creates a high workload but also consumes significant amounts of the experimenter's time.

[0005] Second, the process is inefficient and prone to errors. Because soil samples settle relatively quickly, each experimenter can only work on one sample, resulting in low efficiency. Furthermore, the long, repetitive operations and labor intensity can significantly increase the experimenter's boredom and fatigue, leading to inevitable differences in the suspensions formed during stirring. This, in turn, leads to differences in the sample draws, resulting in errors. Furthermore, when drawing suspensions from different sedimentation layers, manual labor inevitably introduces errors.

[0006] Third, consumables are subject to significant wear and tear. Since the sample cylinder is usually made of glass, and the stirrer is often made of hard materials such as steel, during the measurement process, especially during the stirring process, it is inevitable that the sample cylinder will be worn or even damaged due to collisions. Summary of the Invention

[0007] (1) Technical issues to be resolved

[0008] The present invention aims to solve one of the following technical problems existing in the prior art or related technologies:

[0009] The existing soil sample gradation status and particle analysis and determination process has problems such as large experimental workload, low degree of automation, low efficiency, prone to errors and large wear of consumables.

[0010] (2) Technical solution

[0011] In order to solve the above technical problems, the present invention provides an automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and processing. The specific technical solutions adopted are as follows:

[0012] An automatic stirring and aspiration assembly for geotechnical engineering soil sample analysis and processing, comprising a sampling cup 6, a sample barrel 7, a stirring member 1, a curved pipe 2, a connecting member 3, a pump 4 and a power mechanism; the upper portion of the stirring member 1 is connected to the power mechanism via the connecting member 3, and the power mechanism drives the stirring member 1 to perform reciprocating telescopic motion along the axial direction of the sample barrel 7; the stirring member 1 is provided with a rod 11, and the rod 11 is constructed with a cavity extending along the length direction; one end of the curved pipe 2 is a straight pipe section inserted into the cavity of the rod 11, and the other end is connected to the liquid inlet of the pump 4 via the curved pipe section; the liquid outlet of the pump 4 is opposite to the sampling cup 6; during measurement, the stirring member 1 is inserted into the sample barrel 7 and stirs the sample under the drive of the power mechanism; the pump 4 absorbs the sample in the sample barrel 7 through the curved pipe 2 and transfers it to the sampling cup 6.

[0013] Preferably, the automatic stirring and aspirating assembly further comprises a straight tube 5 , which is installed at the liquid outlet of the pump 4 , and the outlet of the straight tube 5 is opposite to the cup mouth of the sampling cup 6 .

[0014] Preferably, the power mechanism is a motor, a cylinder or a hydraulic cylinder.

[0015] More preferably, the power mechanism is a servo motor.

[0016] Preferably, the stirring member 1 is composed of an integrally formed rod 11 and a disk 12; the disk 12 is vertically constructed at the end of the rod 11; the disk 12 is provided with a suction hole 14 connected to the through-cavity of the rod 11, and a plurality of holes 13 passing through the disk surface.

[0017] More preferably, the disk 12 is circular, and the outer diameter of the disk 12 is smaller than the inner diameter of the sample cylinder 7 , so that the stirring element 1 can reciprocate up and down in the sample cylinder 7 .

[0018] More preferably, the outer diameter of the disk 12 is 80%-95% of the inner diameter of the sample cylinder 7 .

[0019] Preferably, the holes 13 are circular holes and are evenly distributed in a circumferential array on the disk 12 , so that the suspension can pass through the holes 13 and through the disk 12 during the stirring process of the sample, thereby preventing the sample from overflowing the sample tube 7 .

[0020] Preferably, the automatic stirring and sucking assembly further includes a controller; the controller is electrically or signal-connected to the power mechanism and the pump to achieve control of the power mechanism and the pump.

[0021] More preferably, the controller is an existing control device such as a computer or a single chip microcomputer that can control the servo motor and the pump separately or simultaneously.

[0022] (3) Beneficial effects

[0023] Compared with the prior art, the beneficial effects obtained by the present invention are:

[0024] First, the automatic stirring and aspiration assembly for geotechnical sample processing provided by this utility model connects a stirring element to a power mechanism (e.g., a servo motor) capable of vertical reciprocating telescopic motion via a connector, thereby achieving automated control of sample stirring. This significantly reduces the workload of experimenters and prevents errors, mistakes, and even damage to the sample tube caused by fatigue, carelessness, and other factors during manual operation. Furthermore, the outer diameter of the circular disc at the front of the stirring element is smaller than the inner diameter of the sample tube, minimizing wear and damage to the sample tube under automated control.

[0025] Second, a through-cavity is provided on the rod of the stirring element to create a channel for sample absorption. A curved tube (the insertion part is a straight tube) is installed at the top of the stirring element and inserted into the cavity. The other end of the curved tube is connected to the liquid inlet of the pump. The suspension sample in the sample cylinder is directly extracted by the pump, thus realizing the automation of suspension sampling, further reducing the workload of the experimenter and improving work efficiency.

[0026] 3. Since the stirring of samples, sampling depth and sampling volume do not need to be directly controlled by the experimenters during the experiment, while reducing labor intensity, it can also greatly reduce the sampling errors caused by human operation in the process, which is conducive to improving the accuracy of the measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 The top view of the automatic stirring and suction component in a preferred embodiment of the present invention is schematically shown (the power mechanism is not shown).

[0029] Figure 2 for Figure 1 Cross-sectional view along AA direction (pump and sampling cup are not cut).

[0030] Figure 3 The figure schematically shows a three-dimensional view of a stirring member of an automatic stirring and suction assembly in a preferred embodiment of the present invention.

[0031] The reference numerals involved in the above drawings are:

[0032] 1. Stirring element; 2. Bend pipe; 3. Connector; 4. Pump; 5. Straight pipe; 6. Sampling cup; 7. Sample cylinder;

[0033] 11, rod; 12, disk; 13, hole; 14, suction hole. DETAILED DESCRIPTION

[0034] The following describes the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0035] In the following description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and "vertical" to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0036] In the following description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections via an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0037] In addition, in the following description of the present invention, unless otherwise specified, “multiple”, “multiple groups”, and “multiple roots” mean two or more.

[0038] The sample tube and sampling cup used in the following embodiments are both cylindrical containers, wherein the sample tube is a container with a relatively large length-to-diameter ratio, such as a measuring cylinder, and the sampling cup is a container with a relatively small length-to-diameter ratio, such as a beaker.

[0039] Figure 1The top view of the automatic stirring and suction component in a preferred embodiment of the present invention is schematically shown (the power mechanism is not shown). Figure 2 for Figure 1 Sectional view along AA direction (the pump and sampling cup are not cut). Figure 1 and Figure 2 It can be seen that in this preferred embodiment, the assembly includes a stirring member 1, a curved pipe 2, a connector 3, a pump 4, a straight pipe 5, a sampling cup 6, a sample cylinder 7, and a power mechanism not shown. The power mechanism adopts a servo motor, the end of its reciprocating and retractable output shaft is fixedly connected to one end of the connector 3, and the other end of the connector 3 is fixedly connected to the top of the rod 11 of the stirring member 1. Thus, the power mechanism is fixedly connected to the connector 3 through the output shaft, and the connector 3 is connected to the stirring member 1, thereby achieving the same movement of the stirring member 1 through the reciprocating and retractable motion of the output shaft. The rod 11 of the stirring member 1 is provided with a hollow cavity that passes through the axis of the rod, and the straight pipe section vertically arranged on one side of the curved pipe 2 is inserted into the hollow cavity. The curved pipe 2 is ∩-shaped, one side is inserted into the hollow cavity, and the other side is connected to the liquid inlet of the pump 4. The liquid outlet of the pump 4 is connected to the straight pipe 5, and the bottom of the straight pipe 5 is the sampling cup 6.

[0040] from Figure 2 It can be seen that the outer diameter of the end disc of the stirring member 1 inserted into the sample tube 7 is smaller than the inner diameter of the sample tube 7, so that it can be inserted into the sample tube 7 to stir the sample. Figure 1 As shown, the end disc of the stirring element 1 is further provided with a plurality of circular holes 13 penetrating the disc surface, so that the sample suspension can pass through the holes 13 and the gap between the disc and the sample tube during stirring.

[0041] Figure 3 The present invention schematically shows a three-dimensional diagram of a stirring member of an automatic stirring and sucking assembly in a preferred embodiment of the present invention. Figure 3 As can be seen, in this preferred embodiment, the stirring element 1 is integrally formed of a straight rod 11 and a circular disk 12. The disk 12 is fixed vertically to the end of the rod 11 and is coaxial with the rod 11. A suction hole 14 is located in the center of the disk 12, communicating with the hollow cavity of the rod 11. A plurality of circular holes 13 are evenly distributed in a circumferential array on the surface of the disk 12.

[0042] In addition, to ensure the stability of the power mechanism, a mounting base fixedly connected to the test bench can be provided, or the power mechanism can be directly fixed to the test bench or other equipment. Similarly, if the pump and sample cylinder need to be improved in stability, they can be fixed in a similar manner using existing equipment. The power mechanism and pump in the assembly can be controlled by the controller provided by the power mechanism and pump, or by existing control devices such as single-chip microcomputers. The specific control method can be determined by those skilled in the art according to the actual working conditions. It is not the focus of this application and will not be described in detail here.

[0043] The use process and working principle of the above automatic stirring and suction assembly are as follows:

[0044] During use, the soil sample is transferred to the sample tube 7 after being weighed and washed, and the experimenter places the sample tube 7 under the stirring member 1. The power mechanism is started, and the power mechanism drives the stirring member 1 to move up and down through the connecting member 3 to continuously stir the sample mixture in the sample tube 7. After stirring for a specified time, stop and withdraw. After being still for a specified time, the stirring member 1 slowly enters the sample tube 7 under the control of the power mechanism. When it reaches the appropriate position, the pump 4 is started to extract the sample from the sample tube 7, so that it passes along the curved pipe 2 through the pump 4 and then through the straight pipe 5 into the sampling cup 6, thereby completing one sampling. Subsequently, the above process is repeated for subsequent sampling.

[0045] During the above-mentioned stirring and sampling process, the operator only needs to place the sampling tube in the predetermined position, without having to perform manual stirring and manual sampling, thus realizing mechanical replacement of a large number of repetitive actions, greatly reducing labor intensity while saving a lot of time for the experimenters, and at the same time helping to improve work efficiency and reduce experimental errors and loss of experimental equipment.

[0046] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and processing, comprising a sampling cup (6) and a sample cylinder (7); characterized in that: The invention also includes a stirring member (1), a curved pipe (2), a connecting member (3), a pump (4) and a power mechanism; the upper part of the stirring member (1) is connected to the power mechanism through the connecting member (3), and the power mechanism drives the stirring member (1) to perform reciprocating telescopic motion along the axial direction of the sample tube (7); the stirring member (1) is provided with a rod (11), and the rod (11) is constructed with a cavity that passes through along the length direction; one end of the curved pipe (2) is a straight pipe section inserted into the cavity of the rod (11), and the other end is connected to the liquid inlet of the pump (4) through the curved pipe section; the liquid outlet of the pump (4) is opposite to the sampling cup (6); during measurement, the stirring member (1) is inserted into the sample tube (7) and stirs the sample under the drive of the power mechanism; the pump (4) absorbs the sample in the sample tube (7) through the curved pipe (2) and transfers it to the sampling cup (6).

2. The automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and processing according to claim 1 is characterized in that: It also includes a straight tube (5), which is installed at the liquid outlet of the pump (4), and the outlet of the straight tube (5) is opposite to the cup mouth of the sampling cup (6).

3. The automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and processing according to claim 1 is characterized in that: The power mechanism is a motor, a cylinder or a hydraulic cylinder.

4. The automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and processing according to claim 3 is characterized in that: The power mechanism is a servo motor.

5. The automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and processing according to claim 1 is characterized in that: The stirring member (1) is composed of an integrally formed rod (11) and a disk (12); the disk (12) is vertically constructed at the end of the rod (11); and the disk (12) is provided with a suction hole (14) communicating with the through-molded cavity of the rod (11), and a plurality of holes (13) penetrating the disk surface.

6. The automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and processing according to claim 5, characterized in that: The disk (12) is circular, and the outer diameter of the disk (12) is smaller than the inner diameter of the sample cylinder (7).

7. The automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and processing according to claim 6, characterized in that: The outer diameter of the disk (12) is 80%-95% of the inner diameter of the sample cylinder (7).

8. The automatic stirring and sucking assembly for geotechnical engineering soil sample analysis and processing according to claim 5, characterized in that: The holes (13) are circular holes and are evenly distributed in a circular array on the disk (12).

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