A device for pretreatment of soil effective boron detection without pollution

Abstract

The utility model discloses a kind of non-pollution soil effective boron detection pretreatment device, including water bath and sample holder, swing device is provided in water bath, the middle part in sample holder is provided with partition net, the sample holder is equipped with press net and connecting piece;Coaxiality is provided with shaft on the both sides of sample holder, and the end of shaft is all located outside water bath, the top of water bath is concavely provided with rotating gap, the both sides outside water bath are all set up lifting cylinder, the top of water bath is provided with cooling device, lifting cylinder is located directly below shaft;Water bath is equipped with temperature detection sensor, heating controller is equipped with timing module. Improve the degree of automation, reduce the working intensity of experimental personnel, improve experimental efficiency.

Description

Technical Field

[0001] This utility model relates to the field of experimental equipment technology, specifically to a pretreatment device for detecting available boron in pollution-free soil. Background Technology

[0002] Detecting available boron in soil is a crucial step in assessing soil boron supply capacity and guiding rational fertilization, especially for boron-sensitive crops such as rapeseed, sugar beets, fruit trees, and cotton. It is of great significance for agricultural production and forest ecosystem research. Current standards for available boron detection include LY / T 1258—1999 and NY / T 1121.8—2006. These standards generally employ the boiling water extraction-methyleneimine colorimetric method, requiring the use of boron-free glass, quartz, or plastic containers to avoid interference from boron contamination. Furthermore, traditional methods rely on manual control of heating and timing, which introduces human error. Uneven heating of different samples can also lead to variations in boiling time, affecting the accuracy and repeatability of the test results. Utility Model Content

[0003] This invention aims to solve the technical problems existing in the prior art. In particular, it innovatively proposes a pretreatment device for detecting effective boron in non-polluting soil, which improves the degree of automation, reduces the workload of experimental personnel, improves experimental efficiency, can process multiple samples at the same time, and ensures that each sample is heated evenly.

[0004] To achieve the above objectives, this utility model provides a pretreatment device for detecting available boron in pollution-free soil, including a water bath and a basket-shaped sample rack rotatably connected inside the water bath. The water bath is equipped with a swinging device for swinging the sample rack, and the sample rack is equipped with a partition net for restricting the reaction vessel to a vertical position. The sample rack is also equipped with a pressure net for pressing on the reaction vessel and a connector for connecting the pressure net.

[0005] The reaction vessel is a high-temperature and corrosion-resistant container made of polytetrafluoroethylene. The sample rack has coaxially arranged rotating shafts on both sides, with the ends of the shafts extending outside the water bath. The top of the water bath has a recessed notch for holding the rotating shafts. Lifting cylinders are installed on both sides of the water bath to raise the sample rack above it. A cooling device for cooling the sample is installed on the top of the water bath. The lifting cylinders are located directly below the rotating shafts. A temperature sensor is installed inside each reaction vessel. The signal output of the temperature sensor is connected to the temperature signal input of the water bath's heating controller. The heating controller is equipped with a timing module. The heating signal output of the heating controller is connected to the heating signal input of the heating module. The lifting signal inputs of the lifting cylinders are all connected to the lifting signal output of the heating controller. The cooling signal input of the cooling device is connected to the cooling signal output of the heating controller.

[0006] In the above scheme: the separator is detachably connected to the sample holder, the mesh of the separator is used to cover the reaction vessel, and the separator is equipped with a fixing device for fixing it to the sample holder.

[0007] In the above scheme: the sample rack includes vertical plates spaced apart on the left and right, the rotating shafts on both sides are respectively set on the top of the vertical plates, multiple side rods are connected between the front and rear ends of the two vertical plates, and a bottom net is connected between the bottom ends of the two vertical plates. The vertical plates and the side rods form a basket-shaped sample rack.

[0008] The fixing device consists of at least two limiting rods for pressing against the partition net. On the vertical plates on both sides, a set of positioning holes for the insertion of each limiting rod is symmetrically arranged. Each set of positioning holes is arranged sequentially from top to bottom.

[0009] In the above scheme: each group of positioning holes has at least two columns, and the positioning holes in each column are staggered vertically.

[0010] In the above scheme, there are multiple partition meshes, and the mesh size of each partition mesh is different. This can increase the applicability of the reaction vessel, or increase the number of partition meshes fixed to a reaction vessel that is smaller at the top and larger at the bottom, thereby improving the fixation effect on the reaction vessel.

[0011] In the above solution, the top of the lifting cylinder is equipped with a top fork to support the rotating shaft. This can minimize the possibility of the rotating shaft falling during the lifting process and improve the stability during lifting.

[0012] In the above scheme: a pair of connecting lugs are vertically provided on the top of each vertical plate, a connecting shaft is horizontally provided on the pair of connecting lugs, and a connecting piece is rotatably connected to the connecting shaft.

[0013] In the above design, the bottom sides of both rotating shafts are equipped with abutments to press against the inner wall of the water bath. This prevents the sample holder from shifting left and right during the swinging process, thus improving swing stability.

[0014] In summary, the beneficial effects of this invention are as follows: The reaction vessel is made of polytetrafluoroethylene (PTFE), a high-temperature and corrosion-resistant material, ensuring no boron release under high-temperature conditions and minimizing errors. The rotating shaft not only meets the requirements for sample rack oscillation but also allows the sample rack to be lifted out of the water body via a lifting cylinder, followed by cooling through a cooling device. All reaction vessels enter the water bath simultaneously, and the oscillation of the sample rack ensures uniform heating within each vessel. The temperature detection sensor can directly detect the temperature within any one reaction vessel (while simultaneously detecting the temperatures in other reaction vessels), improving the accuracy of heating time control. Furthermore, the sample in this particular reaction vessel can be used to simulate the temperature of samples in other reaction vessels without subsequent testing. The timing module limits the heating time of the heating module when the boiling point is reached. After timing, the heating controller drives the lifting cylinder to lift the sample rack out of the water body for cooling, improving automation and work efficiency, increasing the accuracy of measurement results, avoiding human error, and reducing the workload of laboratory personnel. Attached Figure Description

[0015] Figure 1 This is a control diagram of the present invention.

[0016] Figure 2 This is a cross-sectional view of Embodiment 1 of this utility model.

[0017] Figure 3 This is a schematic diagram of the water bath and sample rack in Example 1.

[0018] Figure 4 This is a schematic diagram of a lifting cylinder.

[0019] Figure 5 This is a cross-sectional view of Embodiment 2 of this utility model.

[0020] Figure 6 This is a schematic diagram of the water bath and sample rack in Example 2. Detailed Implementation

[0021] The present invention will be further described below with reference to embodiments and accompanying drawings:

[0022] Example 1

[0023] like Figures 1-4As shown, a pretreatment device for detecting available boron in uncontaminated soil includes a water bath 1 and a basket-shaped sample rack 2 rotatably connected inside the water bath 1. The water bath 1 is equipped with a swinging device for swinging the sample rack 2. The swinging device can be consistent with the swinging device disclosed in CN217180227U, including a swinging cylinder 1b disposed inside the water bath 1. The extended end of the swinging cylinder 1b is provided with a first locking buckle 1c for connecting to the sample rack 2. This is prior art and will not be described in detail here.

[0024] The reaction vessel 5 is a high-temperature and corrosion-resistant container made of polytetrafluoroethylene (PTFE). Rotating shafts 2e are coaxially mounted on both sides of the sample holder 2 near the top. The distance between the ends of the rotating shafts 2e is greater than the diameter of the water bath 1, allowing the ends of the rotating shafts 2e to extend beyond the water bath 1. Abutment blocks 2l are provided on the bottom sides of the rotating shafts 2e on both sides to abut against the inner wall of the water bath 1. This prevents the sample holder 2 from shifting left and right during swinging, improving swing stability. A rotating notch 1d is recessed at the top of the water bath 1 to accommodate the rotating shafts 2e, allowing for rotational connection. Lifting cylinders 3 are provided on both sides of the water bath 1 to raise the sample holder 2 above the water bath 1, and both the lifting cylinders 3 and the water bath 1 are mounted on the worktable 4. A cooling device 1a is provided on the top of the water bath 1 for cooling the sample. The lifting cylinder 3 is located directly below the rotating shaft 2e, with its extended end facing upwards. A top fork 3a is mounted on top of the lifting cylinder 3 to support the rotating shaft 2e. This design minimizes the risk of the rotating shaft 2e falling during the lifting process, thus improving stability.

[0025] The water bath 1 is equipped with a temperature sensor 6, which is fixed to the water bath 1 by a fixing rope 6a, allowing for flexible positioning of the temperature sensor 6 and enabling it to detect the temperature inside any reaction vessel 5. The signal output terminal of the temperature sensor 6 is connected to the temperature signal input terminal of the heating controller of the water bath 1. The heating controller is equipped with a timing module, and its heating signal output terminal is connected to the heating signal input terminal of the heating module. The lifting signal input terminals of the lifting cylinder 3 are all connected to the lifting signal output terminal of the heating controller, and the cooling signal input terminal of the cooling device 1a is connected to the cooling signal output terminal of the heating controller.

[0026] When the temperature detected by temperature sensor 6 reaches the boiling point, the heating controller drives the timing module to start timing. After the time set by the timing module is reached, the heating controller drives the heating module to stop heating. At the same time, the heating controller drives the cooling device 1a and the lifting cylinders 3 on both sides. The lifting cylinders 3 move the reaction vessel 5 above the water bath 1, and the cooling device 1a cools the sample in the reaction vessel 5, improving working efficiency.

[0027] The sample holder 2 includes vertical plates 2a spaced apart on the left and right, with rotating shafts 2e on both sides respectively mounted on the vertical plates 2a. Multiple side rods 2b are connected between the front and rear ends of the two vertical plates 2a. Figure 2 To better display the separator 2c, side rod 2b is omitted. For details on how to set up side rod 2b, please refer to [reference needed]. Figure 3 As shown, a bottom mesh 2k is connected between the bottom ends of the two vertical plates 2a. The vertical plates 2a, the bottom mesh 2k, and the side rods 2b form a basket-shaped sample holder 2. The mesh size of the bottom mesh 2k must be such that the reaction vessel 5 cannot fall off, meaning the gaps are smaller than the width of the bottom of the conical flask or test tube. A separator mesh 2c is provided in the middle of the sample holder 2 to keep the reaction vessel 5 in a vertical position. The mesh size of the separator mesh 2c is used to fit over the reaction vessel 5. In this embodiment, the separator mesh 2c is fixedly installed on the sample holder 2, and the separator mesh 2c consists of two layers spaced vertically, with the mesh sizes of the two layers corresponding vertically. This design is suitable for cases where the reaction vessel 5 is a test tube.

[0028] The sample holder 2 is equipped with a pressure mesh 2g for pressing onto the reaction vessel 5 and a connector 2f for connecting the pressure mesh 2g. Each vertical plate 2a has a pair of vertically arranged connecting lugs 2i at its top. A connecting shaft 2j is horizontally arranged on each pair of connecting lugs 2i, and the connector 2f is rotatably connected to the connecting shaft 2j. The connector 2f is identical to the connector disclosed in CN217180227U, including a connecting rod. One end of the connecting rod has a collar that fits onto the connecting shaft 2j, and the other end of the connecting rod has a second locking buckle for hooking the mesh of the pressure mesh 2g. This is prior art and will not be described in detail here. The pressure mesh 2g is identical to the pressure mesh disclosed in CN217180227U; this is prior art and will not be described in detail here.

[0029] Example 2

[0030] like Figure 5 , 6 As shown, the difference between this embodiment and Embodiment 1 is that the separator 2c is detachably connected to the sample holder 2, and the separator 2c is equipped with a fixing device for fixing it to the sample holder 2. The fixing device consists of at least two limiting rods 2d for pressing against the separator 2c. Each of the vertical plates 2a on both sides has a set of positioning holes 2h for inserting the limiting rods 2d, and each set of positioning holes 2h is arranged sequentially from top to bottom.

[0031] In this embodiment, each set of positioning holes 2h consists of three columns, and the positioning holes 2h in each column are staggered vertically. This minimizes the vertical spacing of the partition mesh 2c installation positions and ensures that the partition mesh 2c is pressed firmly onto the reaction vessel 5. To improve the applicability of the reaction vessel 5, multiple partition meshes 2c are used. The mesh size of the partition mesh 2c can be the same or different.

[0032] The sample holder 2 is suitable for reaction vessels 5, such as conical flasks which are wider at the top and narrower at the bottom, and also for test tubes. When the reaction vessel 5 is a test tube, at least two layers of separators 2c with the same aperture size need to be installed. Each layer of separator 2c rests on a limiting rod 2d, and the limiting rod 2d presses against the separator 2c to form a clamping installation, thus fixing the separator 2c in place. After the two layers of separators 2c are fixed, the test tube is placed inside.

[0033] When the reaction vessel 5 is a conical flask with a smaller top and a larger bottom, only one layer of separator 2c needs to be installed. First, all the conical flasks need to be placed in the sample rack 2, and then the separator 2c is placed in. At this point, the separator 2c's mesh can pass directly through the conical flask. Because the conical flask is smaller at the top and larger at the bottom, the separator 2c can be placed directly on the flask body. Then, the limiting rod 2d is used to press the separator 2c onto the conical flask to prevent it from moving upwards. Alternatively, multiple layers of separator 2c can be installed, in which case different mesh sizes need to be selected to improve the fixation effect on the reaction vessel 5.

[0034] Figure 5 , 6 The size and number of conical flasks are for illustrative purposes only. In actual use, there will be multiple samples, and the samples can be evenly placed in the sample holder 2, so that the separator 2c is placed as horizontally as possible, and there will be no tilting or lifting on one side.

Claims

1. A pretreatment device for detecting available boron in pollution-free soil, comprising a water bath (1) and a basket-shaped sample rack (2) rotatably connected inside the water bath (1), wherein the water bath (1) is provided with a swinging device for swinging the sample rack (2), the sample rack (2) is provided with a partition net (2c) for restricting the reaction container (5) to be in a vertical state, and the sample rack (2) is equipped with a pressing net (2g) for pressing on the reaction container (5) and a connector (2f) for connecting the pressing net (2g); Its features are: The reaction vessel (5) is a high-temperature and corrosion-resistant container made of polytetrafluoroethylene. The sample holder (2) has coaxially arranged rotating shafts (2e) on both sides, with the ends of the rotating shafts (2e) extending outside the water bath (1). The top of the water bath (1) has a recessed rotating notch (1d) for placing the rotating shafts (2e). Lifting cylinders (3) for raising the sample holder (2) above the water bath (1) are provided on both sides of the water bath (1). The top of the water bath (1) is equipped with a cooling device (1a) for cooling the sample. The cylinder (3) is located directly below the rotating shaft (2e); a temperature detection sensor (6) is installed in any reaction vessel (5), the signal output terminal of the temperature detection sensor (6) is connected to the temperature signal input terminal of the heating controller of the water bath (1), the heating controller is equipped with a timing module, the heating signal output terminal of the heating controller is connected to the heating signal input terminal of the heating module, the lifting signal input terminal of the lifting cylinder (3) is connected to the lifting signal output terminal of the heating controller, and the cooling signal input terminal of the cooling device (1a) is connected to the cooling signal output terminal of the heating controller.

2. The pretreatment device for detecting available boron in pollution-free soil according to claim 1, characterized in that: The separator (2c) is detachably connected to the sample holder (2). The mesh of the separator (2c) is used to fit over the reaction vessel (5). The separator (2c) is equipped with a fixing device for fixing to the sample holder (2).

3. The pretreatment device for detecting available boron in pollution-free soil according to claim 2, characterized in that: The sample rack (2) includes vertical plates (2a) spaced apart on the left and right, and the rotating shafts (2e) on both sides are respectively set on the top of the vertical plates (2a). Multiple side rods (2b) are connected between the front and rear ends of the two vertical plates (2a). A bottom net (2k) is connected between the bottom ends of the two vertical plates (2a). The vertical plates (2a), the bottom net (2k) and the side rods (2b) form a basket-shaped sample rack (2). The fixing device consists of at least two limiting rods (2d) for pressing onto the partition net (2c). On the vertical plates (2a) on both sides, a set of positioning holes (2h) for inserting the limiting rods (2d) are symmetrically arranged for each limiting rod (2d). Each set of positioning holes (2h) is arranged sequentially from top to bottom.

4. The pretreatment device for detecting available boron in pollution-free soil according to claim 3, characterized in that: Each group of positioning holes (2h) consists of at least two columns, and the positioning holes (2h) in each column are staggered vertically.

5. The pretreatment device for detecting available boron in pollution-free soil according to claim 2, characterized in that: The sample holder is equipped with multiple separators (2c) to accommodate reaction vessels of different sizes, and the mesh size of each separator (2c) is different.

6. The pretreatment device for detecting available boron in pollution-free soil according to claim 1, characterized in that: The top of the lifting cylinder (3) is provided with a top fork (3a) for supporting the rotating shaft (2e).

7. The pretreatment device for detecting available boron in pollution-free soil according to claim 3, characterized in that: Each of the vertical plates (2a) has a pair of connecting lugs (2i) vertically arranged on its top. A connecting shaft (2j) is horizontally arranged on each pair of connecting lugs (2i), and a connector (2f) is rotatably connected to the connecting shaft (2j).

8. The pretreatment device for detecting available boron in pollution-free soil according to claim 1, characterized in that: Both sides of the rotating shaft (2e) are provided with abutment blocks (2l) for abutting against the inner wall of the water bath (1).

Images