Soil sample treatment device for indoor soil test

Abstract

The utility model provides a soil sample treatment device for indoor soil test, which comprises a base, a door-shaped frame is fixedly arranged at the top of the base, a crushing cylinder is rotatably connected in the door-shaped frame, a conical screen drum which extends into the cylinder and is coaxial with the cylinder is rotatably connected at the bottom of the crushing cylinder, and the small end of the conical screen drum faces upwards. According to the soil sample crushing device, the door-shaped frame, the crushing cylinder, the side crushing cutter and the lower crushing cutter which are positioned in the crushing cylinder, and the spray pipe and the humidity sensor which are positioned in the crushing cylinder are arranged, the crushing cylinder is rotationally arranged, the crushing cylinder, the side crushing cutter and the lower crushing cutter rotate to accelerate the crushing of a soil sample, and the soil sample is positioned in a closed space when being crushed; according to the soil sample crushing and humidifying device, dust raising pollution cannot be generated, the soil sample can be rapidly crushed and rolled at the same time, the soil sample can be uniformly humidified in cooperation with the spray pipe and the humidity sensor, and compared with the prior art, the sample soil sample crushing and humidifying efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical testing technology, specifically to a soil sample processing device for indoor geotechnical testing. Background Technology

[0002] Soil is the most basic and widely used material in highway engineering construction. Its various performance indicators are crucial. Before engineering design, a geological survey of the site must be conducted, and the physical and mechanical properties of the soil must be tested to make an engineering geological evaluation. Geotechnical tests can obtain many important parameters as a reference for engineering geological evaluation. In geotechnical tests, before conducting tests such as the limit moisture content test, compaction test, free swelling rate test, and bearing ratio test, air-dried soil samples with specific particle sizes must be prepared in advance. For some soil samples that have solidified into lumps with particle sizes too large to meet the test requirements, this is necessary.

[0003] Utility model CN212856068U discloses a soil sample processing device for indoor geotechnical testing. This device includes a crushing system, a pulverizing system, a sieving system, a mixing system, a dust suppression system, and a control platform. The crushing system is used for initial crushing of the soil sample, the pulverizing system for secondary crushing, the sieving system including sieve plates for sieving the secondary crushed soil sample, and the mixing system for mixing the sieved soil sample with a powdered additive. This utility model allows for automatic adjustment of particle size and sieving of the soil sample by compacting it according to experimental needs. It also features an automatic control device to adjust the required soil moisture content. This device is easy to use, reduces manual labor, minimizes dust, and significantly improves experimental efficiency.

[0004] However, the above-mentioned existing technology still has the following shortcomings when used: In order to improve the thorough crushing of soil samples and ensure that the crushed soil samples meet a certain moisture content, multiple separate processing systems are set up, and each processing system operates independently. This results in a lot of time being spent on soil sample transfer, which greatly reduces the efficiency of the test. Moreover, soil samples are prone to leaving residues during transfer, and the amount of residues is relatively large, which can easily cause blockages in the transfer and increase the system load.

[0005] Therefore, this utility model provides a soil sample processing device for indoor geotechnical testing. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a soil sample processing device for indoor geotechnical testing, so as to solve the problems mentioned in the background technology. This utility model has the integrated function of soil sample crushing and humidification, which not only does not generate dust pollution, but also greatly improves the efficiency of crushing and humidification, thereby improving the efficiency of subsequent tests.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a soil sample processing device for indoor geotechnical testing, comprising a base, a portal frame fixedly mounted on the top of the base, a pulverizing cylinder rotatably connected inside the portal frame, a conical sieve cylinder extending coaxially into the cylinder and rotatably connected to the bottom of the pulverizing cylinder, the small end of the conical sieve cylinder facing upwards, a lifting shaft penetrating through and rotatably and slidably connected to the top of the pulverizing cylinder, a sealing cylinder located inside the conical sieve cylinder and having the same taper as the conical sieve cylinder fixedly connected to the bottom of the lifting shaft, the lifting shaft and the top of the conical sieve cylinder slidingly engaging vertically, a plurality of circumferentially evenly distributed side pulverizing blades provided on the inner circumferential wall of the pulverizing cylinder, a plurality of circumferentially evenly distributed lower pulverizing blades provided at the bottom of the pulverizing cylinder, a spray pipe located inside the pulverizing cylinder fixedly connected to the lifting shaft, and a humidity sensor fixedly connected to the bottom of the spray pipe via a suspension rod.

[0008] Furthermore, a cylinder is fixedly connected to the top of the gantry frame, and the output shaft of the cylinder is fixedly connected to the top of the lifting shaft.

[0009] Furthermore, the opposite sides of the gantry frame are fixedly connected by a support ring with a gap sleeve outside the crushing cylinder through a bearing plate, and a positioning ring located above the support ring is fixedly sleeved on the outside of the crushing cylinder. The positioning ring and the support ring are rotatably connected.

[0010] Furthermore, an external toothed ring is fixedly sleeved on the outside of the positioning ring.

[0011] Furthermore, an upper annular plate is fixedly connected to the opposite side of the gantry frame via an upper limit plate. A bevel gear ring is fixedly connected to the top of the upper annular plate. A side drive shaft that penetrates the wall of the crushing cylinder and is rotatably connected is fixedly connected to the side crushing blade. A bevel gear that meshes with the bevel gear ring is fixedly connected to one end of the side drive shaft.

[0012] Furthermore, an internal gear ring is fixedly connected to the opposite side of the gantry frame via a lower limiting plate, and a lower drive shaft is provided on the lower crushing blade that penetrates through and is rotatably connected to the bottom of the crushing cylinder. A transmission gear that meshes with the internal gear ring is fixedly connected to the bottom of the lower drive shaft.

[0013] Furthermore, a short connecting pipe is fixedly connected to the outer peripheral wall of the lifting shaft, and a channel connecting the short connecting pipe and the nozzle is opened inside the lifting shaft.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, a gantry frame, a crushing cylinder, side crushing blades and a bottom crushing blade located inside the crushing cylinder, a nozzle and a humidity sensor located inside the crushing cylinder are provided. The crushing cylinder is rotated. When the crushing cylinder, the side crushing blades and the bottom crushing blade rotate, they will accelerate the crushing of the soil sample. Moreover, the soil sample is crushed in a closed space, which not only prevents dust pollution, but also allows the soil sample to be crushed quickly and tumbled at an accelerated speed. With the help of the nozzle and the humidity sensor, the soil sample can be uniformly humidified. Compared with the prior art, the efficiency of crushing and humidifying the soil sample is greatly improved.

[0016] 2. In this utility model, a conical screen is set at the bottom of the crushing cylinder, and a sealing cylinder that can move up and down is set inside the conical screen. The conical screen and the crushing cylinder rotate in coordination. When it is necessary to discharge the crushed and moistened soil sample, the sealing cylinder is opened. The soil sample rotating around the conical screen will quickly pass through the filter screen. With the crushing and pushing functions of the side crushing blade and the bottom crushing blade, all the soil sample in the crushing cylinder can be discharged. Not only is the discharge efficiency high, but the discharge resistance is also greatly reduced. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a soil sample processing device for indoor geotechnical testing according to the present invention;

[0018] Figure 2 for Figure 1 A diagram at the bottom;

[0019] Figure 3 for Figure 1 A schematic diagram after removing the crushing cylinder and the conical screen cylinder;

[0020] Figure 4 This is a cross-sectional view of the connection between the lifting shaft and the nozzle of a soil sample processing device for indoor geotechnical testing according to this utility model.

[0021] In the diagram: 1. Base; 2. Gantry frame; 21. Bearing plate; 211. Support ring; 22. Upper limit plate; 221. Upper annular plate; 2211. Bevel gear ring; 23. Lower limit plate; 231. Inner gear ring; 3. Crushing cylinder; 31. Positioning ring; 311. Outer gear ring; 4. Conical screen cylinder; 5. Lifting shaft; 51. Short connecting pipe; 52. Channel; 6. Sealing cylinder; 7. Side crushing blade; 71. Side drive shaft; 711. Bevel gear; 8. Lower crushing blade; 81. Side drive shaft; 811. Drive gear; 9. Nozzle; 101. Hanging rod; 102. Humidity sensor; 103. Cylinder. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] Please see Figures 1 to 4 This utility model provides a technical solution: a soil sample processing device for indoor geotechnical testing, including a base 1, a portal frame 2 fixedly installed on the top of the base 1, a crushing cylinder 3 rotatably connected inside the portal frame 2, the crushing cylinder 3 being a vertical cylinder structure, preferably, a support ring 211 with a gap sleeve on the outside of the crushing cylinder 3 is fixedly connected to the opposite side inside the portal frame 2 via a bearing plate 21, and a positioning ring 31 located above the support ring 211 is fixedly sleeved on the outside of the crushing cylinder 3, the positioning ring 31 and the support ring 211 are rotatably connected, wherein a thrust bearing can be set in front of the positioning ring 31 and the support ring 211, a feed pipe is set at the top of the crushing cylinder 3, and a cap can be screwed on the top of the feed pipe during use, the feed pipe being the inlet for putting in the soil sample, and a conical sieve cylinder 4 extending into the cylinder and coaxially connected to the bottom of the crushing cylinder 3, the function of the conical sieve cylinder 4 being to filter qualified particles of the soil sample, the small end of the conical sieve cylinder 4 facing upward, at this time, when the crushing cylinder 3 rotates, it will drive the soil sample inside to rotate. In practice, a positioning hole is provided at the bottom of the crushing cylinder 3, and the large end of the conical screen cylinder 4 is rotatably connected to the positioning hole.

[0024] Furthermore, a lifting shaft 5 is connected to the top of the crushing cylinder 3, allowing for rotation and sliding. Specifically, a rotating sleeve can be installed on the top of the crushing cylinder 3, fitted onto the lifting shaft 5 and slidably connected. During use, a cylinder 103 can be fixedly connected to the top of the gantry frame 2. The output shaft of the cylinder 103 is fixedly connected to the top of the lifting shaft 5, providing the lifting shaft 5 with the power for its lifting motion. A sealing cylinder 6, with the same taper as the conical sieve cylinder 4, is fixedly connected to the bottom of the lifting shaft 5. The lifting shaft 5 drives the sealing cylinder 6 to move up and down. The lifting shaft 5 and the top of the conical sieve cylinder 4 slide vertically together. When the sealing cylinder 6 moves upwards until it contacts the inner conical wall of the conical sieve cylinder 4, the conical sieve cylinder 4 is blocked; otherwise, the conical sieve cylinder 4 can filter soil samples normally.

[0025] The inner circumferential wall of the crushing cylinder 3 is provided with several circumferentially evenly distributed side crushing blades 7. During implementation, the side crushing blades 7 are close to the bottom of the crushing cylinder 3. The crushing cylinder 3 is provided with several circumferentially evenly distributed lower crushing blades 8 located at the bottom. Both the side crushing blades 7 and the lower crushing blades 8 adopt the common inclined blade structure, which not only cuts the soil sample but also promotes the flow of the soil sample. This arrangement, combined with the rotation function of the crushing cylinder 3, keeps the soil sample inside in a continuous rolling state.

[0026] Furthermore, a nozzle 9 located inside the pulverizing cylinder 3 is fixedly connected to the lifting shaft 5. An atomizing nozzle is installed below the nozzle 9. When high-pressure water is introduced into the nozzle 9, the atomizing nozzle will spray water mist to humidify the dry soil sample. A humidity sensor 102 is fixedly connected to the bottom of the nozzle 9 through a hanger 101. When in use, the humidity sensor 102 is inserted into the soil sample to detect the humidity of the soil sample. The tester determines the spray volume based on the humidity. When the humidity meets the requirements, the atomizing nozzle is controlled to stop spraying. Alternatively, spraying can be done periodically, and the humidity of the soil sample can be continuously observed. When the humidity of the soil sample stabilizes, the spraying is controlled according to the humidity.

[0027] In this embodiment, the positioning ring 31 is externally fixedly fitted with an external gear ring 311. When in use, a control motor can be fixedly installed inside the portal frame 2, and then the output shaft of the control motor is fixedly connected to the drive gear that meshes with the external gear ring 311, thereby realizing the control of the rotation of the crushing cylinder 3. When in use, the crushing effect is better when the crushing cylinder 3 is controlled to rotate at different speeds.

[0028] In this embodiment, an upper annular plate 221 is fixedly connected to the opposite side of the gantry frame 2 via an upper limit plate 22. A bevel gear ring 2211 is fixedly connected to the top of the upper annular plate 221. A side drive shaft 71 is fixedly connected to the side crushing blade 7, which penetrates the wall of the crushing cylinder 3 and is rotatably connected. One end of the side drive shaft 71 is fixedly connected to a bevel gear 711 that meshes with the bevel gear ring 2211. The purpose of this arrangement is to reduce cost and structural complexity. In other words, when the crushing cylinder 3 rotates, it can indirectly drive the side crushing blade 7 to rotate at high speed.

[0029] In this embodiment, an internal gear ring 231 is fixedly connected to the opposite side of the gantry frame 2 via a lower limiting plate 23. A lower drive shaft 81 is provided on the lower crushing blade 8 and is rotatably connected to the bottom of the crushing cylinder 3. A transmission gear 811 that meshes with the internal gear ring 231 is fixedly connected to the bottom of the lower drive shaft 81. The purpose of this arrangement is to reduce cost and structural complexity. When the crushing cylinder 3 rotates, it can indirectly drive the lower crushing blade 8 to rotate at high speed.

[0030] In this embodiment, a short pipe 51 is fixedly connected to the outer peripheral wall of the lifting shaft 5. A channel 52 is opened inside the lifting shaft 5 to connect the short pipe 51 and the nozzle 9. When in use, the short pipe 51 is connected to the water supply pipe outside the hose. When it is necessary to moisten the soil sample in the crushing cylinder 3, high-pressure water is introduced into the short pipe 51. At this time, the water will enter the nozzle 9 through the channel 52 and then be discharged through the atomizing nozzle.

[0031] Working principle: Before use, a guide pipe can be welded to the bottom of the conical screen cylinder 4, and then a soft guide bag can be installed below the guide pipe to reduce dust. In order to further improve the degree of soil sample tumbling in the crushing cylinder 3, a spiral guide plate can be welded to the outer conical wall of the conical screen cylinder 4 as needed.

[0032] In use, soil clods are placed into the crushing cylinder 3. After the soil clods are placed, the crushing cylinder 3 is rotated. The side crushing blades 7 and the lower crushing blades 8 are passively driven to rotate at high speed, and then crush and push the soil clods. At this time, the soil sample in the crushing cylinder 3 is in a continuous tumbling state. The humidity of the soil sample is obtained by the humidity sensor 102 through an external detector. Then, the spray nozzle 9 is controlled to spray and humidify the tumbling soil sample. After the soil sample is crushed, the lifting shaft 5 is controlled to descend, the sealing cylinder 6 is lowered, and the conical screen cylinder 4 is opened. At this time, the conical screen cylinder 4 begins to filter the soil sample. The qualified soil sample will fall into the collection container below the conical screen cylinder 4.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A soil sample preparation device for indoor geotechnical testing, comprising a base (1), characterized in that, A portal frame (2) is fixedly installed on the top of the base (1). A crushing cylinder (3) is rotatably connected inside the portal frame (2). A conical sieve cylinder (4) extending into the cylinder and coaxially connected to the bottom of the crushing cylinder (3) is rotatably connected. The small end of the conical sieve cylinder (4) faces upward. A lifting shaft (5) is rotatably and slidably connected through the top of the crushing cylinder (3). A sealing device with the same taper as the conical sieve cylinder (4) is fixedly connected to the bottom of the lifting shaft (5). The top of the cylinder (6), the lifting shaft (5), and the conical screen cylinder (4) slide together. The inner circumferential wall of the crushing cylinder (3) is provided with several circumferentially evenly distributed side crushing blades (7). The crushing cylinder (3) is provided with several circumferentially evenly distributed bottom crushing blades (8) located at the bottom. The lifting shaft (5) is fixedly connected to the nozzle (9) located inside the crushing cylinder (3). The bottom of the nozzle (9) is fixedly connected to a humidity sensor (102) through a hanger (101).

2. The soil sample processing device for indoor geotechnical testing according to claim 1, characterized in that: A cylinder (103) is fixedly connected to the top of the gantry frame (2), and the output shaft of the cylinder (103) is fixedly connected to the top of the lifting shaft (5).

3. The soil sample processing device for indoor geotechnical testing according to claim 1, characterized in that: The opposite sides of the gantry frame (2) are fixedly connected by a bearing plate (21) to a support ring (211) that is gapped and sleeved on the outside of the crushing cylinder (3). The outside of the crushing cylinder (3) is fixedly sleeved with a positioning ring (31) located above the support ring (211). The positioning ring (31) and the support ring (211) are rotatably connected.

4. The soil sample processing device for indoor geotechnical testing according to claim 3, characterized in that: The positioning ring (31) is externally fixedly fitted with an outer toothed ring (311).

5. The soil sample preparation device for indoor geotechnical testing according to claim 1, characterized in that: The upper annular plate (221) is fixedly connected to the opposite side of the gantry frame (2) via the upper limit plate (22). A bevel gear ring (2211) is fixedly connected to the top of the upper annular plate (221). A side drive shaft (71) is fixedly connected to the side crusher (7) and is rotatably connected to the wall of the crushing cylinder (3). A bevel gear (711) that meshes with the bevel gear ring (2211) is fixedly connected to one end of the side drive shaft (71).

6. The soil sample processing device for indoor geotechnical testing according to claim 1, characterized in that: The opposite sides of the gantry frame (2) are fixedly connected to an internal gear ring (231) by a lower limiting plate (23). The lower crushing blade (8) is provided with a lower transmission shaft (81) that passes through the bottom of the crushing cylinder (3) and is rotatably connected. The bottom of the lower transmission shaft (81) is fixedly connected to a transmission gear (811) that meshes with the internal gear ring (231).

7. The soil sample preparation device for indoor geotechnical testing according to claim 1, characterized in that: The outer peripheral wall of the lifting shaft (5) is fixedly connected to a short pipe (51), and a channel (52) connecting the short pipe (51) and the nozzle (9) is opened inside the lifting shaft (5).

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