Settling device for measuring soil mechanical composition

Abstract

The utility model discloses a sedimentation device for measuring soil mechanical composition, and particularly relates to the technical field of soil mechanical composition measurement, the sedimentation device comprises a measuring cylinder for containing soil suspension and a soil sample filtering mechanism, and the soil sample filtering mechanism is arranged in the measuring cylinder; the soil sample filtering mechanism comprises a filter cartridge, a stirring rod, a sleeve rod, a connecting spring and a fixing rod; the fixing rod is fixedly installed at the bottom end of the filter cylinder, the sleeve rod is arranged on the fixing rod in a sliding and sleeving mode, one end of the connecting spring is fixed to the fixing rod, the other end of the connecting spring is fixed to the inner side end of the sleeve rod, and the stirring rod is fixed to the upper end of the sleeve rod. The sedimentation device has the advantage of being capable of accelerating dispersion of a soil sample in a solution.

Description

TECHNICAL FIELD

[0001] The utility model relates to soil mechanical composition determination technical field, concretely is a kind of sedimentation device for determining soil mechanical composition. BACKGROUND

[0002] The principle of Stokes law is: after a certain amount of soil sample is dispersed and washed, all particles with a particle size less than 0.25 mm are transferred to a measuring cylinder to form a suspension, and the suspension in the measuring cylinder is diluted to 1000 ml. The suspension is placed in a sedimentation cylinder. After the suspension is fully stirred in the sedimentation cylinder, the soil particles in the suspension move at a uniform speed under the action of gravity. The settling velocity of the soil particles is directly proportional to the square of the radius of the soil particles. The larger the soil particles, the faster the settling velocity. The particle quantity of soil particles with different particle sizes is measured.

[0003] Therefore, the Chinese utility model patent CN2017219203295 discloses an assembly for determining soil mechanical composition. The assembly is used to place the soil particles to be measured in a washing sieve and hang the washing sieve on the outer wall of the measuring cylinder by a hook. The soil sample is dispersed and washed in the washing sieve. However, the assembly has the following defects: the soil sample is dispersed in the solution by only contacting the solution with the soil sample, which takes a long time. Moreover, it is more difficult to obtain a soil suspension that meets the requirements once the soil sample is hardened. SUMMARY

[0004] The utility model aims to provide a kind of sedimentation device for determining soil mechanical composition, which has the advantage of accelerating the dispersion of soil sample in solution.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions:

[0006] A sedimentation device for determining soil mechanical composition includes a measuring cylinder for containing soil suspension and a soil sample filtering mechanism. The soil sample filtering mechanism is arranged inside the measuring cylinder. The soil sample filtering mechanism includes a filter cylinder, a stirring rod, a sleeve rod, a connecting spring and a fixed rod. The fixed rod is fixedly installed at the bottom end of the filter cylinder. The sleeve rod is slidably sleeved on the fixed rod. One end of the connecting spring is fixed to the fixed rod, and the other end is fixed to the inner side of the sleeve rod. The stirring rod is fixed to the upper end of the sleeve rod.

[0007] The soil sample filtering mechanism has the advantage of effectively stirring the soil sample contained in the filter cylinder through the elastic connection between the sleeve rod and the fixed rod, thereby accelerating the dispersion of the soil sample in the solution.

[0008] Preferably, the outer side of the sleeve rod is provided with a stirring spike.

[0009] The stirring prongs can be broken in the up-down movement, so that the soil sample is broken, and the soil sample is dispersed quickly.

[0010] Preferably, the filter hole of the filter cylinder is 0.25mm.

[0011] Preferably, the soil sample filtering mechanism further comprises a fixing frame, and a hole is formed in the middle of the fixing frame for the stirring rod to pass through.

[0012] Preferably, a rubber resting sleeve is sleeved on the stirring rod, and the rubber resting sleeve is located at the upper end of the stirring rod.

[0013] Preferably, a slot is formed in the upper end of the measuring cylinder for the fixing frame to be inserted and fixed.

[0014] Preferably, an operating end is arranged at the upper end of the stirring rod.

[0015] Preferably, a sealing cover is arranged at the open end of the filter cylinder, the sealing cover is screwed with the filter cylinder, and a through hole is formed in the sealing cover for the stirring rod to slide through.

[0016] Preferably, a fixing base is arranged at the lower end of the measuring cylinder.

[0017] Compared with the prior art, the present application has the following beneficial effects:

[0018] The stirring rod is moved up and down, so that the sleeve rod and the fixing rod slide relative to each other. Since the sleeve rod and the fixing rod are fixed by the connecting spring, the sleeve rod stirs the soil sample during repeated up-down movement, so that the soil sample is dispersed in the solution quickly. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structural schematic view (exploded view) of the sedimentation device for determining mechanical composition of soil;

[0020] Figure 2 It is a structural schematic view (front view) of the sedimentation device for determining mechanical composition of soil;

[0021] Figure 3 It is a structural schematic view (sectional view) of the sedimentation device for determining mechanical composition of soil;

[0022] Figure 4 It is a sectional structural schematic view of the soil sample filtering mechanism.

[0023] In the figure: 1, operating end, 2, rubber resting sleeve, 3, fixing frame, 5, sealing cover, 7, slot, 8, measuring cylinder, 9, fixing base, 10, filter cylinder, 11, fixing rod, 12, sleeve rod, 13, stirring rod, 14, connecting spring, 15, stirring prong. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0025] like Figures 1-3 As shown, a sedimentation device for determining the mechanical composition of soil includes a measuring cylinder 8 for holding a soil suspension and a soil sample filtration mechanism, which is housed inside the measuring cylinder 8. The soil sample filtration mechanism includes a filter cylinder 10, a stirring rod 13, a sleeve rod 12, a connecting spring 14, and a fixing rod 11. The fixing rod 11 is fixedly installed at the bottom end of the filter cylinder 10, and the sleeve rod 12 is slidably fitted onto the fixing rod 11. One end of the connecting spring 14 is fixed to the fixing rod 11, and the other end is fixed to the inner end of the sleeve rod 12. The stirring rod 13 is fixed to the upper end of the sleeve rod 12. The filter pores of the filter cylinder 10 are 0.25 mm. The sleeve rod 12 is provided with stirring spikes 15 on its outer side.

[0026] The component connections and working principle of the soil sample filtration mechanism are as follows:

[0027] Technicians move the stirring rod 13 up and down, which in turn moves the sleeve rod 12 fixed to it up and down. Since the sleeve rod 12 and the fixed rod 11 are elastically connected by a connecting spring 14, and it is precisely because of the elasticity of the connecting spring 14 that the filter cylinder 10 and the stirring rod 13 will slide relative to each other, which is equivalent to shaking the filter cylinder 10 up and down. This allows the dispersed particles of the soil sample to flow out of the filter holes quickly, thereby preparing a soil sample suspension.

[0028] Meanwhile, because the sleeve rod 12 is equipped with stirring spikes 15 on its outer side, the stirring spikes 15 will break up some of the compacted soil sample particles as the sleeve rod 12 moves up and down, causing them to dissolve in the solution.

[0029] In this embodiment, the soil sample filtration mechanism further includes a fixing frame 3, with a hole in the middle for the stirring rod 13 to pass through. A rubber support sleeve 2 is fitted onto the stirring rod 13, and the rubber support sleeve 2 is located at the upper end of the stirring rod 13. The upper opening of the measuring cylinder 8 is provided with a slot 7 for the fixing frame 3 to be inserted and fixed.

[0030] The advantages of setting up the fixing bracket 3 are:

[0031] When the technician does not need to move the stirring rod 13 up and down, the rubber resting sleeve 2 can be fixed on the fixed frame 3, and the bottom of the filter cylinder 10 and the measuring cylinder 8 can be left with a certain space to facilitate the continuous dispersion of the soil sample particles.

[0032] In the embodiment, the upper end of the stirring rod 13 is provided with the operation end 1.

[0033] In the embodiment, the open end of the filter cylinder 10 is provided with the sealing cover 5, the sealing cover 5 is screwed with the filter cylinder 10, and the sealing cover 5 is provided with a perforation through which the stirring rod 13 slides.

[0034] In the embodiment, the lower end of the measuring cylinder 8 is provided with the fixed bottom plate 9. Embodiment 2

[0035] The connection relationship between the stirring rod 13 and the sealing cover 5 is described in detail again in the embodiment, and the specific implementation is as follows:

[0036] Since the stirring rod 13 is slidably arranged on the sealing cover 5, the soil sample particles that do not meet the particle size requirement can flow out from the gap between the sealing cover 5 and the stirring rod 13. In order to avoid this situation, the peripheral part of the perforation provided on the sealing cover 5 is sleeved with a sealing ring, and is made of rubber material, which can be more fitted to the side wall of the stirring rod 13, so as to avoid the leakage of the soil sample particles.

[0037] Although the sealing ring is arranged on the sealing cover 5, the friction between the stirring rod 13 and the sealing cover 5 will be relatively increased, but the sleeve rod 12 and the fixed rod 11 will still relatively slide during the process that the technician shakes the stirring rod 13 up and down. Even if the sleeve rod 12 and the fixed rod 11 do not relatively slide, the filter cylinder 10 will also move up and down with the stirring rod 13, and the filter cylinder 10 can accelerate the dispersion of the soil sample particles into the solution during the up and down movement.

[0038] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A sedimentation apparatus for determining the mechanical composition of a soil, characterized in that The utility model provides a soil sample filtering mechanism, which comprises a measuring cylinder (8) containing soil suspension and the soil sample filtering mechanism is arranged in the inside of the measuring cylinder (8). The soil sample filtering mechanism comprises a filter cylinder (10), a stirring rod (13), a sleeve rod (12), a connecting spring (14) and a fixed rod (11). The fixed rod (11) is fixedly installed at the bottom end of the filter cylinder (10), the sleeve rod (12) is slidably sleeved on the fixed rod (11), one end of the connecting spring (14) is fixed to the fixed rod (11), the other end is fixed to the inner side end of the sleeve rod (12), and the stirring rod (13) is fixed to the upper end of the sleeve rod (12).

2. A sedimentation apparatus for determining the mechanical composition of a soil according to claim 1, characterized in that The outer side of the sleeve rod (12) is provided with stirring prongs (15).

3. The sedimentation apparatus for determining the mechanical composition of a soil according to claim 1, characterized in that The filter hole of the filter cylinder (10) is 0.25 mm.

4. The sedimentation apparatus for determining mechanical composition of soil according to claim 1, wherein, The soil sample filtering mechanism further comprises a fixed frame (3), and a hole, through which the stirring rod (13) passes, is left in the middle of the fixed frame (3).

5. The sedimentation apparatus for determining mechanical composition of soil according to claim 1, wherein, A rubber resting sleeve (2) is sleeved on the stirring rod (13), and the rubber resting sleeve (2) is located at the upper end of the stirring rod (13).

6. The sedimentation apparatus for determining mechanical composition of soil according to claim 1, wherein, An insertion slot (7), in which the fixed frame (3) is inserted and fixed, is arranged at the opening of the upper end of the measuring cylinder (8).

7. The sedimentation apparatus for determining mechanical composition of soil according to claim 1, wherein, An operation end (1) is arranged at the upper end of the stirring rod (13).

8. The sedimentation apparatus for determining mechanical composition of soil according to claim 1, wherein, A sealing cover (5) is arranged at the opening end of the filter cylinder (10), the sealing cover (5) is screwed with the filter cylinder (10), and a perforation, through which the stirring rod (13) slides, is arranged on the sealing cover (5).

9. The sedimentation apparatus for determining mechanical composition of soil according to claim 1, wherein, A fixed base plate (9) is arranged at the lower end of the measuring cylinder (8).

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