Automatic water adding and mixing device for compaction test soil sample preparation

Abstract

The utility model discloses an automatic water adding and mixing device for preparing a compaction test soil sample, a working part comprises a working shaft, the working shaft penetrates through a middle shaft of a barrel body, the working shaft comprises a conveying section shaft and a mixing section shaft which are connected with each other in the length direction, the conveying section shaft is arranged corresponding to a conveying barrel, and the mixing section shaft is arranged corresponding to a mixing barrel; a conveying screw is spirally screwed on the outer wall of the conveying section shaft, and a stirring paddle is arranged on the periphery of the stirring section shaft; according to the automatic water adding and mixing device for preparing the compaction test soil sample, provided by the utility model, the soil sample in the stock bin naturally falls down, enters the conveying barrel from the feeding hole in the conveying barrel and moves towards the mixing barrel in the conveying barrel, and when the soil sample is about to enter the mixing barrel, water flowing into the liquid inlet hole is uniformly mixed into the soil sample, so that the soil sample is completely mixed; water is uniformly added into the soil sample in the conveying cylinder, and a full mixing process is completed in the mixing cylinder; and through the work of one motor, the feeding and stirring effects are achieved.

Description

Technical Field

[0001] The utility model relates to the field of soil compaction test devices, and particularly relates to an automatic water adding and mixing device for preparing soil samples for compaction tests. Background Art

[0002] As an important building material, soil is widely used in the construction of roads, dams, airport runways, sports fields, building foundations, etc. During the civil engineering construction process, the problem of soil compaction is often encountered. After the uncompacted soil is transported, its original structure has been damaged, with many pores and holes, uneven soil quality, large compression amount, low strength, and poor water resistance. In order to study the construction performance of construction soil, a compaction test is carried out to apply a certain impact load to the soil sample to compact it, so as to determine the required maximum dry density and optimum moisture content, which are used as the main basis for controlling the quality of filling construction.

[0003] During the compaction test process, there are many factors affecting the optimum moisture content and maximum dry density of soil. By analyzing these influencing factors, the compaction effect of soil is improved to achieve the purpose of the compaction test. Specifically, during the water adding and mixing process of soil samples, there are problems of uneven mixing, low mixing efficiency, and inaccurate mixing. Content of the Utility Model

[0004] The main purpose of the utility model is to provide an automatic water adding and mixing device for preparing soil samples for compaction tests, aiming to solve the problems of uneven mixing, low mixing efficiency, and inaccurate mixing during the water adding and mixing process of soil samples.

[0005] To achieve the above purpose, the utility model provides an automatic water adding and mixing device for preparing soil samples for compaction tests, including:

[0006] A base;

[0007] A cylinder body, including a conveying cylinder and a stirring cylinder that are mutually communicated. An inlet is provided on the outer wall of the end of the conveying cylinder far from the stirring cylinder, a liquid inlet hole is provided on the outer wall of the end of the conveying cylinder close to the stirring cylinder, and a discharge door is arranged at the lower part of the stirring cylinder;

[0008] A working part, including a working shaft, the working shaft is arranged through the central axis of the cylinder body. In the length direction, the working shaft includes a connected conveying section shaft and a stirring section shaft. The conveying section shaft corresponds to the conveying cylinder, the stirring section shaft corresponds to the stirring cylinder. A conveying spiral is spirally arranged on the outer wall of the conveying section shaft, and stirring paddles are arranged on the outer periphery of the stirring section shaft;

[0009] A motor, corresponding to the working part and driving the working part to rotate;

[0010] A feed bin, connected to the inlet;

[0011] A liquid delivery pump, the outlet end of which is communicated with the liquid inlet hole.

[0012] Further, the distance between the outer peripheral wall of the conveying section shaft and the inner peripheral wall of the conveying cylinder is 2 to 5 cm.

[0013] Further, the number of the liquid inlet holes is multiple, and they are arranged at intervals of 2 to 5 cm in the length direction of the conveying cylinder, and the number of the liquid inlet holes is 2 to 5.

[0014] Further, the conveying section shaft and the stirring section shaft are detachably connected.

[0015] Further, the conveying cylinder and the stirring cylinder are of a detachable structure.

[0016] Further, the liquid delivery pump is of a peristaltic pump type.

[0017] Further, a water tank is provided on the base, and the inlet end of the liquid delivery pump is communicated with the water tank.

[0018] Further, a relief space of 120 degrees to 180 degrees is formed in the setting of the stirring paddle on the outer periphery of the stirring section shaft.

[0019] Further, the connecting end of the storage bin and the feed inlet is in a funnel shape.

[0020] Further, the discharge door is arranged on the end face of the stirring cylinder away from the conveying cylinder.

[0021] The automatic water-adding and mixing device for preparing the compaction test soil sample provided by the present utility model has a cylinder body divided into a conveying cylinder and a stirring cylinder, which are respectively used as the bases for conveying and stirring; the soil sample in the storage bin naturally falls and enters the conveying cylinder from the feed inlet on the conveying cylinder, moves in the conveying cylinder towards the stirring cylinder, and when about to enter the stirring cylinder, the water flowing in from the liquid inlet hole is evenly mixed into the soil sample, the water is evenly added to the soil sample in the conveying cylinder, and the sufficient mixing process is completed in the stirring cylinder; when the working part rotates, the cooperation between the conveying screw and the conveying cylinder realizes the screw feeding, and the stirring paddle realizes the stirring effect in the stirring cylinder, and the feeding and stirring effects are completed through the work of one motor. Description of the Drawings

[0022] Figure 1 is a schematic diagram (first perspective) of the automatic water-adding and mixing device for preparing the compaction test soil sample according to the first embodiment of the present utility model;

[0023] Figure 2 is a schematic diagram (second perspective) of the automatic water-adding and mixing device for preparing the compaction test soil sample according to the first embodiment of the present utility model;

[0024] Figure 3 It is a sectional schematic view (eccentric) of the automatic water adding and mixing device for preparing the compaction test soil sample in the first embodiment of the present utility model;

[0025] Figure 4 It is a schematic view of the automatic water adding and mixing device for preparing the compaction test soil sample in the first embodiment of the present utility model (the mixing cylinder is hidden).

[0026] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0027] It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] Those skilled in the art of the present technology can understand that unless specifically stated, the singular forms "a", "an", "the", "above-mentioned" and "this" used herein may also include the plural forms. It should be further understood that the term "including" used in the description of the present utility model means the presence of the described features, integers, steps, operations, elements, units, modules and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, units, modules, components and / or their groups. It should be understood that when we say an element is "connected" or "coupled" to another element, it can be directly connected or coupled to other elements, or there may also be intermediate elements. In addition, the "connection" or "coupling" used herein may include wireless connection or wireless coupling. The phrase "and / or" used herein includes all or any unit and all combinations of one or more related listed items.

[0029] Those skilled in the art of the present technology can understand that unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of those of ordinary skill in the field to which the present utility model belongs. It should also be understood that terms such as those defined in a general dictionary should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted with an idealized or overly formal meaning unless specifically defined as here.

[0030] Refer to Figures 1 to 4 , in an embodiment of the present utility model, an automatic water adding and mixing device for preparing a compaction test soil sample includes:

[0031] A base 100;

[0032] The cylinder body 200 includes a conveying cylinder 210 and a stirring cylinder 220 that are in communication with each other. An inlet opening 211 is provided on the outer wall of the end of the conveying cylinder 210 away from the stirring cylinder 220. A liquid inlet hole 212 is provided on the outer wall of the end of the conveying cylinder 210 near the stirring cylinder 220. A discharge door is provided at the lower part of the stirring cylinder 220;

[0033] The working part 300 includes a working shaft. The working shaft is arranged through the central axis of the cylinder body 200. In the length direction, the working shaft includes a connected conveying section shaft 310 and a stirring section shaft 320. The conveying section shaft 310 corresponds to the conveying cylinder 210, and the stirring section shaft 320 corresponds to the stirring cylinder 220. A conveying screw 311 is spirally arranged on the outer wall of the conveying section shaft 310, and stirring paddles 321 are arranged on the outer periphery of the stirring section shaft 320;

[0034] The motor 400 is arranged corresponding to the working part 300 and drives the working part 300 to rotate;

[0035] The silo 500 is connected to the inlet opening 211;

[0036] The liquid delivery pump 600 has its outlet end in communication with the liquid inlet hole 212.

[0037] In the prior art, during the process of adding water and mixing soil samples, there are problems of uneven mixing, low mixing efficiency, and inaccurate mixing.

[0038] In the present utility model, the base 100 serves as the foundation of the whole and plays a supporting role. It is not limited that the base 100 is an integral structure, and it can also be separated.

[0039] The cylinder body 200 includes a conveying cylinder 210 and a stirring cylinder 220 that are in communication with each other. A liquid inlet hole 212 is provided on the outer wall of the end of the conveying cylinder 210 near the stirring cylinder 220. An inlet opening 211 is provided on the outer wall of the end of the conveying cylinder 210 away from the stirring cylinder 220. A discharge door is provided at the lower part of the stirring cylinder 220. The soil is conveyed in the conveying cylinder 210 towards the stirring cylinder 220. The soil sample enters the conveying cylinder 210 from the inlet opening 211 and moves in the conveying cylinder 210 towards the stirring cylinder 220; and when about to enter the stirring cylinder 220, the water flowing in from the liquid inlet hole 212 is evenly mixed into the soil sample. After being completely mixed in the stirring cylinder 220, the discharge door can be opened to discharge the soil sample.

[0040] The working section 300 includes a working shaft which is arranged through the central axis of the cylinder body 200. The working shaft includes a conveying section shaft 310 and a stirring section shaft 320 which are connected to each other in the length direction. The conveying section shaft 310 corresponds to the conveying cylinder 210, and the stirring section shaft 320 corresponds to the stirring cylinder 220. A conveying screw 311 is spirally arranged on the outer wall of the conveying section shaft 310, and stirring paddles 321 are arranged on the outer periphery of the stirring section shaft 320. When the working section 300 rotates, the cooperation between the conveying screw 311 and the conveying cylinder 210 realizes spiral feeding, and the stirring paddles 321 realize the stirring effect in the stirring cylinder 220. The shape of the stirring paddles 321 can be various and is not limited herein, as long as the stirring effect can be achieved.

[0041] The motor 400 is arranged corresponding to the working section 300 and drives the working section 300 to rotate. Through the operation of one motor 400, the effects of feeding and stirring are completed.

[0042] The silo 500 is connected to the feed inlet 211, and the soil sample in the silo 500 naturally falls and enters the conveying cylinder 210 from the feed inlet 211.

[0043] The outlet end of the liquid delivery pump 600 is communicated with the liquid inlet hole 212. The liquid delivery pump 600 pumps water into the liquid inlet hole 212. The type selection of the liquid delivery pump 600 can be various, as long as the conveying can be completed.

[0044] In summary, the cylinder body 200 is divided into a conveying cylinder 210 and a stirring cylinder 220, which serve as the bases for conveying and stirring respectively; the soil sample in the silo 500 naturally falls and enters the conveying cylinder 210 from the feed inlet 211 on the conveying cylinder 210, moves in the conveying cylinder 210 towards the stirring cylinder 220, and when about to enter the stirring cylinder 220, the water flowing in from the liquid inlet hole 212 is evenly mixed into the soil sample, and the water is evenly added to the soil sample in the conveying cylinder 210, and a sufficient mixing process is completed in the stirring cylinder 220; when the working section 300 rotates, the cooperation between the conveying screw 311 and the conveying cylinder 210 realizes spiral feeding, and the stirring paddles 321 realize the stirring effect in the stirring cylinder 220. Through the operation of one motor 400, the effects of feeding and stirring are completed.

[0045] In one embodiment, the distance between the outer peripheral wall of the conveying section shaft 310 and the inner peripheral wall of the conveying cylinder 210 is 2 to 5 centimeters.

[0046] In this embodiment, the dimensional relationship between the diameter of the conveying section shaft 310 and the inner diameter of the conveying cylinder 210 is defined, aiming to reduce the thickness of the conveyed soil sample in the conveying cylinder 210 and ensure the uniform water addition effect of the liquid delivery pump 600. When a relatively high sample delivery efficiency is specifically required, only the rotation speed of the motor 400 needs to be increased and the pumping speed of the liquid delivery pump 600 needs to be matched.

[0047] In one embodiment, the number of the liquid inlet holes 212 is multiple, and they are arranged at intervals of 2 to 5 cm in the length direction of the conveying cylinder 210, and the number of the liquid inlet holes 212 is 2 to 5.

[0048] In this embodiment, the number of the liquid inlet holes 212 is set to be multiple, preferably two to three specifically, so that the inflow speed of water in a single liquid inlet hole 212 will not be too high. When the water inflow speed in a single liquid inlet hole 212 is too high, it is not conducive to soil conveyance, and at the same time, uneven mixing of water may also occur. Therefore, by increasing the number of the liquid inlet holes 212, the uniformity of the mixed water is further improved.

[0049] In one embodiment, the conveying section shaft 310 and the stirring section shaft 320 are detachably connected.

[0050] In this embodiment, the working shaft is set as a detachable structure, which reduces the processing difficulty and provides convenience for both installation and maintenance. Especially considering that at the positions of the working shaft corresponding to the conveying cylinder 210 and the stirring cylinder 220, the functional structures connected to the outer periphery are very different (such as a conveying spiral structure and a stirring paddle), splitting the working shaft into the conveying section shaft 310 and the stirring section shaft 320 is also convenient for the separate processing of the functional structures on their outer peripheries.

[0051] In one embodiment, the conveying cylinder 210 and the stirring cylinder 220 are detachable structures.

[0052] In this embodiment, the conveying cylinder 210 and the stirring cylinder 220 are set as detachable structures, which is convenient for cleaning the inside of the stirring cylinder 220, and also facilitates the cleaning of the related structures inside the stirring cylinder 220. At the same time, it provides convenience for installation, maintenance, model replacement, etc. The specific connection method between the conveying cylinder 210 and the stirring cylinder 220 can be a flange or a clamp, etc., which is not limited.

[0053] In one embodiment, the liquid delivery pump 600 is a peristaltic pump type.

[0054] In this embodiment, the model of the liquid delivery pump 600 is limited to a peristaltic pump, which has the advantages of stable operation and convenient adjustment. Especially considering that the amount of water added to the test soil sample is not large, it is very convenient to use a peristaltic pump that can complete fine adjustment under low conveying conditions.

[0055] In one embodiment, a water tank is provided on the base 100, and the inlet end of the liquid delivery pump 600 is communicated with the water tank.

[0056] In this embodiment, a water tank is directly provided. Compared with pumping a set amount of water by the liquid delivery pump 600, directly pouring the set amount of water into the water tank, the working progress of the liquid delivery pump 600 can be directly limited and observed, and to a certain extent, the abnormality of the water addition amount is avoided. During the process of the embodiment, the water tank can be set to be closed or even transparent, so that the water addition work can be optimized.

[0057] Refer to Figures 3 to 4 , in one embodiment, a avoidance space of 120 degrees to 180 degrees is formed on the outer circumference of the stirring paddle 321 on the stirring section shaft 320.

[0058] In this embodiment, the circumferential range of the stirring paddle 321 is limited, which is convenient for the final blanking process. Preferably, the distribution angle of the stirring paddle 321 on the outer circumference of the stirring section shaft 320 is 180 degrees. While facilitating blanking, the stirring effect can be maintained as much as possible. For example, the stirring paddle 321 includes a plurality of sub-stirring blades distributed in the circumferential direction, and the plurality of sub-stirring blades are arranged only within 180 degrees in the circumferential direction of the stirring section shaft 320.

[0059] Refer to Figures 3 to 4 , in one embodiment, the connecting end of the material bin 500 and the feed inlet 211 is in a funnel shape.

[0060] In this embodiment, the shape of the lower end of the material bin 500 is limited, so that the efficiency of the material in the material bin 500 flowing into the feed inlet 211 is relatively high. Specifically, the funnel shape can be the shape of a conical funnel or a polygonal funnel shape, which is not limited.

[0061] In one embodiment, the discharge door is arranged on the end face of the stirring cylinder 220 away from the conveying cylinder 210.

[0062] In this embodiment, the position of the discharge door is limited. The discharge door is arranged on the end face of the stirring cylinder 220, which is convenient for stirring and also for blanking.

[0063] In summary, for the automatic water-adding and mixing device for preparing compaction test soil samples provided by the present utility model, the cylinder body 200 is divided into a conveying cylinder 210 and a mixing cylinder 220, which serve as the bases for conveying and mixing respectively; the soil sample in the material bin 500 naturally falls and enters the conveying cylinder 210 from the feeding port 211 on the conveying cylinder 210, moves in the conveying cylinder 210 towards the mixing cylinder 220, and when about to enter the mixing cylinder 220, the water flowing in through the liquid inlet hole 212 is evenly mixed into the soil sample, the water is evenly added to the soil sample in the conveying cylinder 210, and a sufficient mixing process is completed in the mixing cylinder 220; when the working part 300 rotates, the cooperation between the conveying screw 311 and the conveying cylinder 210 realizes screw feeding, and the mixing paddle 321 realizes the mixing effect in the mixing cylinder 220. Through the operation of one motor 400, the effects of feeding and mixing are completed.

[0064] The above are only the preferred embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall similarly be included within the patent protection scope of the present utility model.

Claims

1. An automatic water-adding and mixing device for preparing soil samples in compaction tests, characterized in that, Comprising: A base (100); A cylinder body (200), including a conveying cylinder (210) and a stirring cylinder (220) that are interconnected and conductively connected. An inlet port (211) is provided on the outer wall of the end of the conveying cylinder (210) away from the stirring cylinder (220), and a liquid inlet hole (212) is provided on the outer wall of the end of the conveying cylinder (210) near the stirring cylinder (220). A discharge door is provided at the lower part of the stirring cylinder (220); A working part (300), including a working shaft, the working shaft is arranged through the central axis of the cylinder body (200). In the length direction, the working shaft includes a conveying section shaft (310) and a stirring section shaft (320) that are connected to each other. The conveying section shaft (310) corresponds to the conveying cylinder (210), and the stirring section shaft (320) corresponds to the stirring cylinder (220). A conveying screw (311) is spirally advanced on the outer wall of the conveying section shaft (310), and stirring paddles (321) are arranged on the outer periphery of the stirring section shaft (320); A motor (400), corresponding to the working part (300) and driving the working part (300) to rotate; A feed bin (500), connected to the inlet port (211); A liquid delivery pump (600), the outlet end of which is conductively connected to the liquid inlet hole (212).

2. The automatic water-adding and mixing device for preparing compaction test soil samples according to claim 1, wherein The distance between the outer peripheral wall of the conveying section shaft (310) and the inner peripheral wall of the conveying cylinder (210) is 2 to 5 centimeters.

3. The automatic water adding and mixing device for preparing compacted test soil samples according to claim 1, characterized in that, The number of the liquid inlet holes (212) is multiple, and they are arranged at intervals of 2 to 5 centimeters in the length direction of the conveying cylinder (210), and the number of the liquid inlet holes (212) is 2 to 5.

4. The automatic water-adding and mixing device for preparing compaction test soil samples according to claim 1, characterized in that, The conveying section shaft (310) and the stirring section shaft (320) are detachably connected.

5. The automatic water adding and mixing device for preparing compacted test soil samples according to claim 4, characterized in that, The conveying cylinder (210) and the stirring cylinder (220) are detachable structures.

6. The automatic water adding and mixing device for preparing compacting test soil samples according to any one of claims 1 to 5, characterized in that, The liquid delivery pump (600) is of the peristaltic pump type.

7. The automatic water adding and mixing device for preparing compacting test soil samples according to any one of claims 1 to 5, characterized in that, A water tank is provided on the base (100), and the inlet end of the liquid delivery pump (600) is conductively connected to the water tank.

8. The automatic water-adding and mixing device for preparing compacted test soil samples according to any one of claims 1 to 5, characterized in that, The stirring paddles (321) form an avoidance space of 120 degrees to 180 degrees on the outer periphery of the stirring section shaft (320).

9. The automatic water adding and mixing device for preparing compacting test soil samples according to any one of claims 1 to 5, characterized in that, The connection end of the feed bin (500) and the inlet port (211) is funnel-shaped.

10. The automatic water adding and mixing device for preparing compacting test soil samples according to any one of claims 1 to 5, characterized in that, The discharge door is arranged on the end face of the stirring cylinder (220) away from the conveying cylinder (210).

Images