An automatic lifting oil bath pot for detecting slow-release potassium in soil

Abstract

The utility model relates to soil detection technical field, concretely is a kind of automatic lifting oil bath pot for detecting soil slow-acting potassium.The oil bath pot includes oil bath pot main body, test tube rack, mounting plate, lifting mechanism and controller.Heating groove is set up in oil bath pot main body surface, test tube rack is placed in heating groove, and connecting ring is equipped in the top of middle connecting rod.Heating groove is set up in oil bath pot surface by supporting tube and support seat insertion fixed with mounting plate, and the bottom of mounting plate is equipped with multiple positioning pipes, and the connecting rod on test tube rack is cooperated to restrict displacement.Rectangular groove is opened in the surface of mounting plate, and L type mounting rod is fixed in groove by bolt, and non-contact liquid level sensor is arranged in the mounting groove of mounting rod side.Lifting mechanism includes sliding block slidingly connected in the sliding slot of mounting plate, and electric push rod is installed on sliding block, and push rod output shaft connects C type lifting block.The structure can automatically adjust the position of test tube in oil bath, prevent sample overflow, improve detection stability and operation safety.

Description

Technical Field

[0001] This utility model relates to the field of soil testing technology, and in particular to an automatic lifting oil bath for detecting slow-release potassium in soil. Background Technology

[0002] In the soil slow-release potassium detection experiment, the main problem in sample processing is as follows: when boiling in an oil bath at 120-130℃, the sample will bubble rapidly due to the high temperature of the oil bath and the presence of some carbonates during heating. If not handled in time or the test tube is cooled in time, the bubbling solution will continue to rise along the test tube wall, and the sample powder will adhere to the inner wall, resulting in incomplete digestion. In some cases, the sample may even overflow the test tube, posing a significant risk of burns to the operator and causing experimental failure.

[0003] Therefore, we propose an automatic lifting oil bath for detecting slow-release potassium in soil. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic lifting oil bath for detecting slow-release potassium in soil.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic lifting oil bath for detecting slow-release potassium in soil includes: The oil bath pot body has a heating groove formed on its surface; A test tube rack is placed inside a heating bath. Multiple connecting rods are fixed to the surface of the test tube rack, one of which is located in the middle of the test tube rack and has a connecting ring fixed to its top. The mounting plate is supported on the surface of the oil bath body by multiple support mechanisms. Multiple rectangular grooves are opened through the surface of the mounting plate. An L-shaped mounting rod can be detachably installed in the rectangular groove. A mounting groove is opened on one side of the mounting rod. A non-contact liquid level sensor is fixed in the mounting groove. A controller is fixed at the edge of the surface of the mounting plate. The lifting mechanism, located on the surface of the mounting plate, is used to lift the test tube rack.

[0006] In one possible design, the lifting mechanism includes a groove formed on the surface of the mounting plate, a slider slidably connected in the groove, an electric push rod fixed on the surface of the slider, one end of the output shaft of the electric push rod passing through the slider and fixed with a C-shaped lifting block, and the lifting block and connecting ring working together.

[0007] In one possible design, a connecting block is fixed to the surface edge of the slider, and a set screw is threaded through the surface of the connecting block, with the bottom end of the set screw abutting against the surface of the mounting plate.

[0008] In one possible design, the support mechanism includes a support base bonded to the surface of the oil bath body and a support tube fixed to the bottom of the mounting plate, with the support tube and the support base being interlocked.

[0009] In one possible design, the bottom of the mounting plate is fixed with multiple positioning tubes, which are used in conjunction with connecting rods.

[0010] In one possible design, the surface of the mounting plate has multiple threaded grooves, and a bolt passes through the top of the mounting rod, with the bottom end of the bolt threadedly connected to one of the threaded grooves.

[0011] Beneficial effects: The automatic lifting oil bath for detecting slow-release potassium in soil described in this utility model, through the setting of non-contact liquid level sensor, electric push rod and controller, can monitor the liquid level in the test tube in real time. When the liquid level rises above the preset value and is detected, the test tube rack can be pulled upward to temporarily detach from the oil bath for continuous heating. After the liquid level in the test tube falls back down, it moves downward back into the oil bath for continued digestion. This not only effectively protects the safety and occupational health of the operators, but also avoids sample powder adhering to the inner wall of the test tube, thus significantly improving the stability and accuracy of the measurement of slow-release potassium in soil. In this utility model, the automatic lifting oil bath for detecting slow-release potassium in soil, through the setting of structures such as mounting plate, support pipe and support base, allows for easy and quick disassembly of the mounting plate and other structures without affecting the heating treatment of other equipment required in the experiment by the oil bath. In this invention, an automatic lifting oil bath for detecting slow-release potassium in soil is described. Through the setting of a rectangular groove, mounting rod and other structures, it can be adjusted according to the position of the test tube and the position of the non-contact liquid level sensor. It is simple and convenient to operate and flexible to use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall three-dimensional structure of an automatic lifting oil bath for detecting slow-release potassium in soil, as proposed in this utility model. Figure 2 This is a schematic diagram of the exploded structure of an automatic lifting oil bath for detecting slow-release potassium in soil, as proposed in this utility model. Figure 3 This is a partial cross-sectional view of an automatic lifting oil bath for detecting slow-release potassium in soil, as proposed in this utility model. Figure 4 This is a partial three-dimensional structural diagram of an automatic lifting oil bath for detecting slow-release potassium in soil, as proposed in this utility model.

[0013] In the diagram: 1. Oil bath body; 2. Heating tank; 3. Support base; 4. Test tube rack; 5. Connecting rod; 6. Connecting ring; 7. Mounting plate; 8. Support tube; 9. Controller; 10. Positioning tube; 11. Rectangular groove; 12. Threaded groove; 13. Slide groove; 14. Sliding block; 15. Electric push rod; 16. Lifting block; 17. Connecting block; 18. Set screw; 19. Mounting rod; 20. Mounting groove; 21. Non-contact liquid level sensor; 22. Bolt. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] In one embodiment: Refer to Figures 1-4 An oil bath includes: an oil bath body 1 with a heating tank 2 on its surface, the heating tank 2 containing heat-conducting oil or other suitable heating media to provide a stable heating environment for experimental containers placed therein. A test tube rack 4 is placed inside the heating tank 2, and multiple connecting rods 5 on the surface of the test tube rack 4. These connecting rods 5 not only support the test tube rack 4 but also provide guidance and positioning during subsequent lifting and lowering. One connecting rod 5 is located in the middle of the test tube rack 4, and a connecting ring 6 is fixed to its top. The connecting ring 6 is used to cooperate with a lifting mechanism to realize the lifting and lowering operation of the test tube rack 4, and also facilitates the operator to lift and move the test tube rack 4.

[0016] The surface of the oil bath body 1 is supported by multiple support mechanisms, including a support base 3 and a support tube 8. The support base 3 is fixed to the surface of the oil bath body 1 by adhesive bonding, and the support tube 8 is fixed to the bottom of the mounting plate 7. The support tube 8 and the support base 3 can be directly inserted into each other. Through this insertion structure, the mounting plate 7 can be quickly erected above the oil bath body 1 and can be easily removed when needed. The bottom of the mounting plate 7 is also fixed with multiple positioning tubes 10. The number of positioning tubes 10 is the same as the number of connecting rods 5 on the test tube rack 4, and their positions correspond one-to-one. When the mounting plate 7 is erected, the connecting rods 5 can just extend into the positioning tubes 10. The cooperation of the two further restricts the vertical displacement of the test tube rack 4 and prevents the test tube rack 4 from shaking or shifting during heating or lifting.

[0017] Multiple rectangular slots 11 are formed through the surface of the mounting plate 7. L-shaped mounting rods 19 can be detachably installed inside the rectangular slots 11. A mounting groove 20 is formed on one side of the mounting rod 19, and a non-contact liquid level sensor 21 is fixedly installed inside the mounting groove 20. The detection end of the non-contact liquid level sensor 21 faces one side and is used to detect changes in liquid level by aligning it with the side wall of the test tube. Multiple threaded slots 12 are also formed on the surface of the mounting plate 7. A through hole is formed at the top of the mounting rod 19. After a bolt 22 passes through this through hole, its bottom end can be threaded into any one of the threaded slots 12. Through the cooperation of the bolt 22 and the threaded slot 12, the mounting rod 19 can be fixed at any position within the rectangular slot 11. This allows for flexible adjustment of the position of the non-contact liquid level sensor 21 according to the actual placement of the test tube on the test tube rack 4, ensuring that the sensor is accurately aligned with the liquid inside the test tube.

[0018] This application can be used in the field of soil testing, or in other fields applicable to this application.

[0019] In another embodiment: an automatic lifting oil bath for detecting slow-release potassium in soil, which is applied to the field of soil testing; In another aspect of this embodiment, the surface of the mounting plate 7 is also provided with a lifting mechanism for lifting the test tube rack 4. The lifting mechanism includes a groove 13 formed on the surface of the mounting plate 7. The groove 13 is arranged along the width direction of the mounting plate 7. A slider 14 is slidably connected inside the groove 13. The slider 14 can slide freely along the groove 13 to adjust its position. An electric push rod 15 is fixedly mounted on the surface of the slider 14. The output shaft of the electric push rod 15 faces downward, and one end of the output shaft passes through the slider 14 and is fixedly provided with a C-shaped lifting block 16. The opening size of the lifting block 16 is adapted to the diameter of the connecting ring 6. The lifting block 16 can pass through the connecting ring 6, thereby driving the connecting ring 6 to rise and fall when the electric push rod 15 is actuated. A connecting block 17 is fixedly installed at the edge of the surface of the slider 14. The surface of the connecting block 17 has a threaded hole, through which the set screw 18 is threaded. The bottom end of the set screw 18 can abut against the surface of the mounting plate 7. After the slider 14 is adjusted to a suitable position, the set screw 18 is tightened. The position of the slider 14 is fixed by the friction between the set screw 18 and the mounting plate 7, preventing the slider 14 from sliding when the electric push rod 15 is working. A controller 9 is also fixedly installed at the edge of the surface of the mounting plate 7. The controller 9 is electrically connected to the non-contact liquid level sensor 21 and the electric push rod 15 through wires. It is used to receive the signal transmitted by the non-contact liquid level sensor 21 and control the start, stop and direction of the electric push rod 15 according to the preset program. The controller 9 has a built-in timing module, which can control the time when the test tube rack 4 is removed from the oil bath. The non-contact liquid level sensor can be XKC-Y26 or other suitable models, and the oil bath body 1 can be HH-1S or other suitable models.

[0020] Workflow: First, place the test tubes containing soil slow-release potassium sample powder and digestion solution one by one into the test tube holes on the test tube rack 4. Place the test tube rack 4 containing the test tubes into the heating tank 2 of the oil bath body 1. At this time, the bottom of the test tubes is immersed in the heating medium in the heating tank 2 to prepare for subsequent heating. Then, pick up the mounting plate 7 and align its bottom support tube 8 with the support seat 3 on the surface of the oil bath body 1. Slowly lower the mounting plate 7 so that the support tube 8 is fully inserted into the support seat 3. At this time, the mounting plate 7 is stably erected above the oil bath body 1. At the same time, each connecting rod 5 on the test tube rack 4 will extend into the positioning tube 10 at the bottom of the mounting plate 7. Through the cooperation of the connecting rod 5 and the positioning tube 10, the initial positioning of the test tube rack 4 is completed.

[0021] Then, based on the specific position of the test tube on the test tube rack 4, adjust the position of the non-contact liquid level sensor 21: Place the L-shaped mounting rod 19 into the corresponding rectangular groove 11 on the surface of the mounting plate 7, and move the mounting rod 19 along the rectangular groove 11 until the detection end of the non-contact liquid level sensor 21 in the mounting groove 20 is accurately aligned with the side wall of the test tube, ensuring that the sensor can clearly detect the liquid level change in the test tube. After adjusting the position, pass the bolt 22 through the through hole at the top of the mounting rod 19, align it with the corresponding threaded groove 12 on the surface of the mounting plate 7, and rotate the bolt 22 clockwise until the bottom end of the bolt 22 is completely screwed into the threaded groove 12, and the mounting rod 19 is tightly attached to the surface of the mounting plate 7. At this time, the mounting rod 19 is fixed, and the position of the non-contact liquid level sensor 21 is also fixed.

[0022] Then adjust the position of the lifting mechanism: push the slider 14 to slide along the slide groove 13 until the C-shaped lifting block 16 passes through the connecting ring 6, ensuring that the lifting block 16 can stably drive the connecting ring 6 to rise and fall. Then rotate the set screw 18 on the surface of the connecting block 17, so that the bottom end of the set screw 18 moves slowly downward until the bottom end of the set screw 18 is tightly against the surface of the mounting plate 7. At this time, the slider 14 is fixed under the pressure of the set screw 18 and will no longer slide along the slide groove 13.

[0023] Then, the heating switch of the oil bath body 1 is turned on, and the heating medium in the heating tank 2 begins to heat up. The temperature gradually rises to the temperature required for the digestion of the slow-release potassium soil sample, and the sample and digestion solution in the test tube are heated and digested. During the heating process, the liquid level in the test tube rises slowly due to the increase in temperature. When the liquid level rises to the preset warning position, the non-contact liquid level sensor 21 will immediately detect this liquid level change and convert the detected liquid level signal into an electrical signal, which is transmitted to the controller 9 through the wire. After receiving the liquid level exceeding the limit signal, the controller 9 will immediately send a start signal to the electric push rod 15 according to the preset program. The output shaft of the electric push rod 15 begins to extend upward, driving the lifting block 16 at its bottom to move upward. The lifting block 16 pulls the connecting ring 6, and the connecting ring 6 drives the connecting rod 5 in the middle to move upward, thereby driving the entire test tube rack 4 to move upward. During the ascent of the test tube rack 4, the multiple connecting rods 5 on its surface slide within their corresponding positioning tubes 10. The positioning tubes 10 guide and limit the connecting rods 5, ensuring that the test tube rack 4 remains horizontal and rises smoothly without tilting or swaying. Finally, the test tube rack 4 pulls all the test tubes completely out of the heating medium in the heating tank 2, stopping continuous heating. When the time it takes for the test tubes to detach from the heating medium reaches the preset cooling time in the controller 9 (which can be set according to experimental conditions), the temperature inside the test tubes gradually decreases, and the liquid level drops back to the normal digestion level. At this time, the controller 9 sends a signal to the electric push rod 15 again, controlling the electric push rod 15 to move the test tube rack 4 downwards until the test tubes are re-immersed in the heating medium in the heating tank 2, continuing heating and digestion. This process of "heating - liquid level exceeding the limit - lifting and cooling - falling back and continuing heating" can be repeated multiple times according to the digestion requirements of the slow-release potassium soil samples, ensuring that the samples are fully digested and that problems caused by excessively high liquid levels do not occur.

[0024] When the automatic lifting function is not needed and the oil bath body 1 is only used for heating other experimental equipment, simply lift the mounting plate 7 upwards to pull the support tube 8 out of the support base 3. The mounting plate 7 and the non-contact liquid level sensor 21, lifting mechanism, controller 9 and other structures on it can then be removed as a whole. At this time, the oil bath body 1 can be used as an ordinary oil bath without affecting its heating treatment of other experimental equipment. The operation is simple and convenient.

[0025] However, as is well known to those skilled in the art, the working principle and wiring method of the electric actuator 15 are conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0026] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An automatic lifting oil bath for detecting slow-release potassium in soil, characterized in that, include: The oil bath body (1) has a heating groove (2) on its surface. Test tube rack (4) is placed in heating tank (2). Multiple connecting rods (5) are fixed on the surface of test tube rack (4). One of the connecting rods (5) is located in the middle of test tube rack (4) and a connecting ring (6) is fixed at the top. The mounting plate (7) is mounted on the surface of the oil bath body (1) by multiple support mechanisms. Multiple rectangular grooves (11) are opened through the surface of the mounting plate (7). An L-shaped mounting rod (19) is detachably installed in the rectangular groove (11). A mounting groove (20) is opened on one side of the mounting rod (19). A non-contact liquid level sensor (21) is fixed in the mounting groove (20). A controller (9) is fixed at the edge of the surface of the mounting plate (7). The lifting mechanism is set on the surface of the mounting plate (7) and is used to lift the test tube rack (4).

2. The automatic lifting oil bath for detecting slow-release potassium in soil according to claim 1, characterized in that, The lifting mechanism includes a groove (13) formed on the surface of the mounting plate (7), a slider (14) is slidably connected in the groove (13), an electric push rod (15) is fixed on the surface of the slider (14), one end of the output shaft of the electric push rod (15) passes through the slider (14) and is fixed with a C-shaped lifting block (16), and the lifting block (16) and the connecting ring (6) are used together.

3. An automatic lifting oil bath for detecting slow-release potassium in soil according to claim 2, characterized in that, A connecting block (17) is fixedly provided on the surface edge of the slider (14), and a set screw (18) is threaded through the surface of the connecting block (17). The bottom end of the set screw (18) abuts against the surface of the mounting plate (7).

4. An automatic lifting oil bath for detecting slow-release potassium in soil according to claim 3, characterized in that, The support mechanism includes a support base (3) bonded to the surface of the oil bath body (1) and a support tube (8) fixed to the bottom of the mounting plate (7), with the support tube (8) and the support base (3) being inserted into each other.

5. An automatic lifting oil bath for detecting slow-release potassium in soil according to claim 4, characterized in that, The bottom of the mounting plate (7) is fixed with multiple positioning tubes (10), which are used in conjunction with the connecting rod (5).

6. An automatic lifting oil bath for detecting slow-release potassium in soil according to claim 5, characterized in that, The surface of the mounting plate (7) is provided with multiple threaded grooves (12), and the top end of the mounting rod (19) is provided with a bolt (22), and the bottom end of the bolt (22) is threadedly connected to one of the threaded grooves (12).

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