A soil test sample pretreatment device

Abstract

This utility model relates to a soil sample pretreatment device, including a support base and a cylinder. A motor with a splined shaft is located at the bottom of the support base, extending from the top of the support base. A detachable top cover is provided on the top of the cylinder, with an exhaust connection on the top cover. A hollow shaft rotatably passes through the bottom of the cylinder, and multiple detachable stirring tubes are mounted on the hollow shaft. Each stirring tube has multiple exhaust holes. The lower end of the hollow shaft has an internal spline hole that matches the splined shaft. A connecting cavity and an air inlet are provided inside the bottom wall of the cylinder. The hollow shaft passes through the connecting cavity, and an air inlet hole is provided on the side wall of the section of the hollow shaft located in the connecting cavity. One end of the air inlet is connected to the connecting cavity, and the other end is connected to the air inlet connection. When the cylinder moves the internal spline hole onto the splined shaft, the cylinder can be fixed to the support base via a quick-connect assembly. This utility model integrates drying and stirring functions, which not only improves the uniformity of soil drying but also facilitates cleaning of the stirring cylinder.

Description

Technical Field

[0001] This utility model belongs to the technical field of sample pretreatment devices, and specifically relates to a soil sample pretreatment device. Background Technology

[0002] Soil samples often require drying and mixing pretreatment before testing. Drying pretreatment involves placing the soil sample in a dryer for heating. However, in current technology, soil samples are typically placed in test tubes, sample trays, or other containers before being placed in the drying equipment. Hot air is introduced into the drying equipment to heat the soil and expel moisture, which can dry the soil sample, but this method leads to uneven drying. Mixing involves pouring the soil sample into the mixing drum of a small mixer, using an electric drive unit to drive the mixing rod via the mixing shaft. However, this mixing method has the following problems: after mixing, because the electric drive unit and the mixing drum are not detachable, and the mixing rod on the mixing shaft is also not detachable, cleaning the mixing rod, mixing shaft, and the inside of the mixing drum is difficult. Utility Model Content

[0003] This invention provides a soil sample pretreatment device that integrates drying and stirring functions, which not only improves the uniformity of soil drying but also facilitates the cleaning of the stirring drum.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A soil sample pretreatment device includes a support base and a cylinder. A motor with a splined shaft is located at the bottom of the support base, extending from the top of the support base. A detachable top cover is provided on the top of the cylinder, with an exhaust connection on the top cover. A hollow shaft rotatably passes through the bottom of the cylinder, with multiple detachable stirring tubes on the hollow shaft and multiple exhaust holes on the stirring tubes. The lower end of the hollow shaft has an internal spline hole matching the splined shaft. A connecting cavity and an air inlet are provided inside the bottom wall of the cylinder. The hollow shaft passes through the connecting cavity, and an air inlet hole is provided on the side wall of the section of the hollow shaft located in the connecting cavity. One end of the air inlet is connected to the connecting cavity, and the other end is connected to the air inlet connection. When the cylinder moves the internal spline hole onto the splined shaft, the cylinder can be fixed to the support base via a quick-connect assembly.

[0006] Furthermore, both the exhaust connection and the intake connection are female connectors, with the two female connectors respectively located on the top cover and the side wall of the cylinder.

[0007] Furthermore, a filter screen is provided on the air inlet end of the female connector located on the top cover.

[0008] Furthermore, the top cover is provided with a buckle seat, and a buckle ring is rotatably inserted through the buckle seat. The side wall of the cylinder is provided with a locking seat, and the locking seat is provided with a locking groove that matches the buckle ring.

[0009] Furthermore, the top cover is provided with a sealing ring that matches the top of the cylinder.

[0010] Furthermore, the cylinder body and both sides of the support are connected by quick-connect assemblies. The quick-connect assemblies include a support one on the side wall of the support and a support two on the side wall of the cylinder body. A screw rod is movably inserted on the support one. The screw rod is provided with two retaining rings and a knob from top to bottom. The two retaining rings are located on both sides of the support one. The support two is provided with an internal thread through hole that matches the threaded section at the upper end of the screw rod.

[0011] Furthermore, the stirring tube is threaded through the side wall of the hollow shaft, and the stirring tube is provided with a hexagonal head on the side near the hollow shaft.

[0012] Furthermore, a one-way valve is provided at the inner end of the stirring tube near the hollow shaft, which allows air from inside the hollow shaft to flow into the stirring tube.

[0013] Furthermore, the top of the hollow shaft is provided with an end cap via a threaded connection.

[0014] Furthermore, a second sealing ring is provided on both the upper and lower sides of the connecting cavity, and the second sealing ring is connected between the hollow shaft and the bottom wall of the cylinder.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. After placing the soil sample inside the cylinder, a motor drives the stirring tube to rotate via a hollow shaft to agitate the soil sample. A hot air source is connected via the air inlet connection. During agitation, hot air is sequentially discharged into the soil through the air inlet, connecting chamber, hollow shaft, stirring tube, and exhaust port, ensuring uniform soil drying. Moisture inside the cylinder is discharged through the exhaust connection, resulting in excellent drying effect and high efficiency, integrating drying and agitation functions into one unit.

[0017] 2. After use, disconnect the air inlet connection from the external air source. The cylinder can be quickly removed from the base using the quick-connect assembly. After removing the top cover from the cylinder, remove the stirring tube from the hollow shaft. This facilitates cleaning of the top cover, stirring tube, and inside the cylinder separately, and also allows for thorough cleaning of the cylinder's interior while preventing water from damaging the motor during the cleaning process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 for Figure 1 Enlarged view of point A in the image;

[0020] Figure 3 A schematic diagram of the lateral structure connected at the buckle;

[0021] In the diagram: 1. Base; 2. Air inlet; 3. Support; 4. Motor; 5. Splined shaft; 6. Knob; 7. Retaining ring; 8. Support 1; 9. Support 2; 10. Screw; 11. Stirring tube; 12. Hollow shaft; 13. End cap; 14. Buckle; 15. Clip; 16. Sealing ring 1; 17. Buckle; 18. Top cover; 19. Filter screen; 20. Female connector; 21. Male connector; 22. Exhaust hose; 23. Cylinder; 24. Air inlet hose; 25. Exhaust port; 26. One-way valve; 27. Internal splined hole; 28. Sealing ring 2; 29. ​​Air inlet; 30. Connecting cavity; 31. Hexagonal head. Detailed Implementation

[0022] To better understand the technical content of this utility model, specific embodiments are provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0023] See Figures 1 to 3 This utility model provides a soil sample pretreatment device, including a support 3 and a cylinder 23. The cylinder 23 has an open top. A motor 4 is bolted to the bottom of the support 3. The motor 4 has a splined shaft 5, which extends a predetermined length through the top of the support 3 and is rotatably connected to the bottom wall of the cylinder 23. A detachable top cover 18 is provided on the top of the cylinder 23, which can be easily removed from the cylinder 23. The top cover 18 has an exhaust connection. A hollow shaft 12 is rotatably inserted through the bottom of the cylinder 23. Both ends of the hollow shaft 12 are closed structures. Multiple stirring tubes 11 are detachably installed on the hollow shaft 12, which is located inside the cylinder 23. Multiple exhaust holes 25 are provided on the stirring tubes 11. The lower end of the hollow shaft 12 has... The inner spline hole 27 is matched with the spline shaft 5. The inner spline hole 27 is not connected to the inner cavity on the upper side of the hollow shaft 12. The bottom wall of the cylinder 23 is provided with a connecting cavity 30 and an air inlet 2. The hollow shaft 12 passes through the connecting cavity 30, and the side wall of the hollow shaft 12 located in the connecting cavity 30 is provided with an air inlet hole 29. The function of the air inlet hole 29 is to ensure that the air in the air inlet 2 can continuously flow into the hollow shaft 12 through the air inlet hole 29 during the rotation of the hollow shaft 12. One end of the air inlet 2 is connected to the connecting cavity 30, and the other end of the air inlet 2 is connected to the air inlet connection part. When the cylinder 23 drives the inner spline hole 27 to be fitted onto the spline shaft 5, the cylinder 23 can be fixed to the support 3 through the quick-connect assembly, so that the bottom of the cylinder 23 is fixedly attached to the upper surface of the base 1.

[0024] When it is necessary to stir the soil sample, the soil sample is discharged into the cylinder 23. The motor 4 is started and the hollow shaft 12 is driven to rotate on the bottom wall of the cylinder 23 through the cooperation of the spline shaft 5 and the inner spline hole 27. The hollow shaft 12 can drive multiple stirring tubes 11 to rotate, thus stirring the soil sample.

[0025] When soil samples need to be dried, they are first connected to a hot air supply device via an air inlet connection. The hot air supply device can be a hot air blower, a heat pump, or other existing air supply equipment capable of heating air. Depending on the testing requirements, a sterilization and filtration device can be used to filter and sterilize the air before it flows into the cylinder 23. The sterilization and filtration device can be set before or after the hot air source output; no specific limitation is made here, as long as it can filter and sterilize the hot air before it enters the cylinder 23. The hot air is discharged into the soil sequentially through the air inlet 2, the connecting cavity 30, the air inlet hole, the hollow shaft 12, the stirring tube 11, and the exhaust hole 25. Hot air is sprayed into the soil during the stirring process, generating moisture. The moisture in the cylinder 23 is discharged through the exhaust connection. The exhaust connection can be connected to an exhaust hose 22, which can be connected to a tail gas treatment mechanism. This allows the discharged air to be treated to avoid environmental pollution. Based on the fact that the hot air is evenly sprayed into the soil sample during the stirring process, the drying effect is good and the efficiency is high.

[0026] Specifically, both the exhaust connection and the intake connection are female connectors 20. The two female connectors 20 are respectively located on the top cover 18 and the side wall of the cylinder 23. There are two male connectors 21 that match the female connectors 20. The two male connectors 21 are respectively connected to the exhaust hose 22 and the intake hose 24. The connection between the male connectors 21 and the female connectors 20 facilitates quick connection and disconnection.

[0027] Specifically, a filter screen 19 is provided on the air inlet end of the female connector 20 on the top cover 18 to prevent soil inside the cylinder from being blown out with moisture.

[0028] Specifically, a buckle 17 is fixedly provided on the top cover 18, and a buckle ring 14 is rotatably inserted on the buckle 17. A card seat 15 is fixedly provided on the side wall of the cylinder 23. The card seat 15 is provided with a locking groove that matches the buckle ring 14. By using the buckle ring 14 to fasten into the locking groove, the top cover 18 can be quickly locked onto the cylinder 23, which facilitates quick assembly and disassembly of the top cover 18.

[0029] Specifically, the top cover 18 is provided with a sealing ring 16 that matches the top of the cylinder 23, and the top cover 18 is provided with an annular protruding positioning part. The sealing ring 16 is located on the outer periphery of the positioning part, which makes it easy to quickly snap the top cover 18 into the top of the cylinder 23 and provides a good sealing effect.

[0030] Specifically, the cylinder 23 and the support 3 are connected on both sides by quick-connect components. The quick-connect components include a support 1 8 fixed on the side wall of the support 3 and a support 2 9 fixed on the side wall of the cylinder 23. A screw 10 is movably inserted on the support 1 8. The screw 10 can rotate and slide up and down on the support 1 8. Two retaining rings 7 and a knob 6 are fixed on the screw 10 from top to bottom. The two retaining rings 7 are located on the upper and lower sides of the support 1 8 respectively. The support 2 9 is provided with an internal thread through hole that matches the upper thread section of the screw 10.

[0031] Rotating the knob 6 will drive the screw 10 to rotate, thereby screwing the upper end of the screw 10 into the internal threaded through hole of the second support 9 until the lower retaining ring 7 abuts against the first support 8, which can connect the first support 8 and the second support 9 together. After completing the connection on both sides, the cylinder 23 can be fixed on the base 1. After the screw 10 is screwed out of the internal threaded through hole, the screw 10 will drive the upper retaining ring 7 to fall and abut against the upper surface of the first support 8 under the action of gravity, so that the connection between the first support 8 and the second support 9 is broken. The cylinder 23 can be lifted directly to disengage the internal spline hole 27 from the spline shaft 5, which facilitates the quick removal of the cylinder 23 from the base 1.

[0032] Specifically, the stirring tube 11 is threaded through the side wall of the hollow shaft 12. The end of the stirring tube 11 is provided with an external thread, and the side wall of the hollow shaft 12 is provided with an internal thread hole, so that the stirring tube 11 can be screwed into the internal thread hole for connection. A hexagonal head 31 is fixed on the side of the stirring tube 11 near the hollow shaft 12, so that the stirring tube 11 can be installed on the inner hollow shaft by using a wrench through the hexagonal head 31.

[0033] Specifically, a one-way valve 26 is provided at the inner end of the mixing tube 11 near the hollow shaft 12. The one-way valve 26 allows air from the hollow shaft 12 to flow into the mixing tube 11, and the one-way valve 26 can prevent soil samples from entering the hollow shaft 12.

[0034] Specifically, the top of the hollow shaft 12 is provided with an end cap 13 by a threaded connection. The lower end of the end cap 13 is provided with an external thread, and the top end of the hollow shaft 12 is provided with an internal thread to facilitate the installation and removal of the end cap 13.

[0035] Specifically, sealing rings 28 are provided on both the upper and lower sides of the connecting cavity 30. The sealing rings 28 are connected between the hollow shaft 12 and the bottom wall of the cylinder 23, in order to improve the sealing between the hollow shaft 12 and the bottom of the cylinder 23.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A soil test sample pre-treatment device, characterized by: The device includes a support base and a cylindrical body. A motor with a splined shaft is located at the bottom of the support base, extending from the top of the support base. A detachable top cover is provided on the top of the cylindrical body, with an exhaust connection on the top cover. A hollow shaft rotatably passes through the bottom of the cylindrical body, with multiple detachable stirring tubes on the hollow shaft. Each stirring tube has multiple exhaust holes. The lower end of the hollow shaft has an internal splined hole that matches the splined shaft. A connecting cavity and an air inlet are located within the bottom wall of the cylindrical body. The hollow shaft passes through the connecting cavity, and an air inlet hole is located on the side wall of the connecting cavity section of the hollow shaft. One end of the air inlet is connected to the connecting cavity, and the other end is connected to the air inlet connection. When the cylindrical body moves the internal splined hole onto the splined shaft, the cylindrical body can be fixed to the support base via a quick-connect assembly.

2. A soil test sample pre-treatment apparatus as claimed in claim 1, wherein: Both the exhaust connection and the intake connection are female connectors, with the two female connectors located on the top cover and the side wall of the cylinder, respectively.

3. A soil test sample pre-treatment apparatus as claimed in claim 2, wherein: A filter screen is provided on the air inlet end of the female connector located on the top cover.

4. A soil test sample pre-treatment device according to claim 1, characterised in that: The top cover is provided with a buckle seat, and a buckle ring is rotatably inserted through the buckle seat. The side wall of the cylinder is provided with a locking seat, and the locking seat is provided with a locking groove that matches the buckle ring.

5. A soil test sample pre-treatment device according to claim 1, characterised in that: The top cover is provided with a sealing ring that matches the top of the cylinder.

6. A soil test sample pre-treatment device according to claim 1, characterised in that: The cylinder body and the support base are connected on both sides by quick-connect assemblies. The quick-connect assemblies include a support base one on the side wall of the support base and a support base two on the side wall of the cylinder body. A screw rod is movably inserted on the support base one. The screw rod is provided with two retaining rings and a knob from top to bottom. The two retaining rings are located on both sides of the support base one. The support base two is provided with an internal thread through hole that matches the threaded section at the upper end of the screw rod.

7. A soil test sample pre-treatment device according to claim 1, characterised in that: The stirring tube is threaded through the side wall of the hollow shaft, and the stirring tube is provided with a hexagonal head on the side near the hollow shaft.

8. A soil test sample pre-treatment device according to claim 1, characterised in that: The stirring tube is equipped with a one-way valve at its inner end near the hollow shaft, which allows air from inside the hollow shaft to flow into the stirring tube.

9. A soil test sample pre-treatment device according to claim 1, characterised in that: The hollow shaft is fitted with an end cap at the top via a threaded connection.

10. A soil test sample pre-treatment device according to claim 1, characterised in that: The connecting cavity is provided with sealing rings 2 on both the upper and lower sides, and the sealing rings 2 are connected between the hollow shaft and the bottom wall of the cylinder.

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