Boiling water bath digestion device

Abstract

The utility model relates to the technical field of soil detection, and discloses a boiling water bath digestion device which comprises a machine body, a water bath kettle is fixedly mounted at the bottom of the inner wall of the machine body, a heating rod is fixedly mounted in the water bath kettle, a test tube rack is movably mounted in the water bath kettle, and a water outlet is formed in the test tube rack. And two stepping motors which are symmetrically distributed front and back are fixedly mounted at the bottom of the inner wall of the machine body. The two stepping motors are started to drive the lead screw to rotate, and the supporting frame and the lifting support are driven to move up and down under the cooperation of the guide rod, so that the supporting rod drives the lifting frame to move up and down, and the test tube rack moves up and down at the same time; according to the test tube rack, vibration of the lifting support is transmitted through the supporting rod, a test tube body located in the test tube rack is vibrated, the test tube body does not need to be shaken manually, a plurality of samples can be experimented in batches, and time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil detection, in particular to a boiling water bath digestion device. Background Art

[0002] With the rapid development of modern industry and agriculture, the living standards in urban and rural areas are constantly improving. All fields related to arsenic and its compounds, such as metallurgy, non-ferrous metal smelting, light industry, pesticides, and medicine, may be exposed to arsenic and its compounds during operation, storage, transportation, and use. Arsenic and its compounds can enter the body through the respiratory tract, digestive tract, and skin, causing poisoning. Currently, the boiling water bath digestion method is commonly used in the process of detecting arsenic content in soil. It is simple and quick, does not require special equipment, and is suitable for rapid processing of large quantities of soil samples.

[0003] During the boiling water bath digestion process, the test tubes containing the samples need to be shaken multiple times. Since aqua regia is contained inside the test tubes, which is highly corrosive, manually shaking the test tubes is dangerous and requires high technical skills of the operators. Therefore, a boiling water bath digestion device is proposed to solve the above problems. Utility Model Content

[0004] (1) Technical problems solved

[0005] In response to the shortcomings of the existing technology, the utility model provides a boiling water bath digestion device, which has the advantages of conveniently shaking the test tube body inside the test tube rack, and facilitating the lifting of the test tube rack and taking out the test tube body. It solves the problem that the test tubes storing samples need to be shaken multiple times during the boiling water bath digestion process, and since aqua regia is contained inside the test tube, which is highly corrosive, manual shaking of the test tube is dangerous and requires high technical skills of the operator.

[0006] (2) Technical solution

[0007] The technical solution of the utility model for solving the above technical problems is as follows: a boiling water bath digestion device, comprising a body, a water bath fixedly mounted on the bottom of the inner wall of the body, a heating rod fixedly mounted inside the water bath, a test tube rack movably mounted inside the water bath, two stepper motors fixedly mounted on the bottom of the inner wall of the body and symmetrically distributed front and back, four lifting seats fixedly mounted on the bottom of the inner wall of the body and distributed in a rectangular shape, a guide rod fixedly mounted on the side of the four lifting seats facing the water bath, and a screw rod fixedly connected to the tops of the output shafts of the front and rear two stepper motors. The outer sides of the two screw rods are respectively connected to the internal thread transmission connection of the support frame, and the four corners of the support frame are respectively slidably connected to the outer sides of the four guide rods. The top of the support frame is fixedly connected to an equal-diameter crankshaft, and the top of the equal-diameter crankshaft is fixedly connected to the bottom of the lifting drag. The bottom of the support frame is fixedly connected to an oscillation motor through a bracket, and the top of the output shaft of the oscillation motor is fixedly connected to the bottom of the equal-diameter crankshaft. The front and rear sides of the test tube rack are fixedly installed with a lifting frame, and the top of the lifting drag is fixedly installed with a support rod fixedly connected to the bottom of the lifting frame, and the test tube body is placed inside the test tube rack.

[0008] As a preferred technical solution, a docking groove is fixedly installed inside the test tube rack, and a plurality of evenly distributed placement grooves are opened inside the test tube rack, and the test tube body is located inside the placement grooves.

[0009] As a preferred technical solution, the number of the equal-diameter crankshafts is four and they are arranged in groups of two and are symmetrically distributed front to back. The top of the output shaft of the oscillation motor is fixedly connected to the bottom of the equal-diameter crankshaft on the front left.

[0010] As a preferred technical solution, the number of the support rods is four and they are symmetrically distributed in groups of two in front and back. The top of the lifting drag is provided with four positioning grooves whose positions correspond to the support rods. A Teflon sleeve is provided inside the positioning groove. The bottom of the support rod is located inside the Teflon sleeve. A rubber pad is provided on the outside of the support rod.

[0011] As an optimal technical solution, a lifting sensing bracket is fixedly installed on the bottom of the inner wall of the body, two lifting sensors are fixedly installed on the right side of the lifting sensing bracket and are symmetrically distributed up and down, and a sensing block is fixedly installed on the right side of the support frame, and the left side of the sensing block is located on the right side of the lifting sensing bracket.

[0012] As a preferred technical solution, a distillation hood located outside the test tube body is movably installed inside the test tube rack.

[0013] (3) Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] 1. The utility model drives the screw to rotate by starting two stepper motors, and drives the support frame and the lifting drag to move up and down with the cooperation of the guide rod, thereby driving the lifting frame to move up and down through the support rod, so that the test tube rack moves up and down at the same time, and through the cooperation of the oscillation motor and the equal-diameter crankshaft, the lifting drag vibrates and transmits it through the support rod, so that the test tube body inside the test tube rack vibrates, without the need for manual shaking of the test tube body, and multiple samples can be tested in batches, saving time.

[0016] 2. The utility model detects the position of the induction block through the lifting sensor, thereby stopping the stepping motor from working, stopping the rise and starting the oscillation work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the test tube body placement structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the utility model from another perspective;

[0022] Figure 5 This is a schematic diagram of the connection between the test tube body and the test tube rack of the utility model;

[0023] Figure 6 This is a schematic diagram of the connection between the oscillating motor and the equal-diameter crankshaft of the utility model;

[0024] Figure 7 This is a schematic diagram of the internal structure of the water bath and test tube rack of the utility model.

[0025] In the figure: 1. Machine body; 2. Water bath; 3. Heating rod; 4. Test tube rack; 5. Stepper motor; 6. Lifting seat; 7. Guide rod; 8. Screw rod; 9. Support frame; 10. Constant-diameter crankshaft; 11. Lifting drag; 12. Oscillation motor; 13. Lifting rack; 14. Support rod; 15. Test tube body; 16. Docking slot; 17. Placement slot; 18. Positioning slot; 19. PTFE bushing; 20. Rubber pad; 21. Lifting sensor bracket; 22. Lifting sensor; 23. Sensor block; 24. Distillation hood. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In the embodiment, Figure 1-7 A boiling water bath digestion device is given. The utility model includes a body 1, a water bath 2 is fixedly installed on the bottom of the inner wall of the body 1, a heating rod 3 is fixedly installed inside the water bath 2, a test tube rack 4 is movably installed inside the water bath 2, two stepper motors 5 are fixedly installed on the bottom of the inner wall of the body 1 and are symmetrically distributed front and back, four lifting seats 6 are fixedly installed on the bottom of the inner wall of the body 1 and are distributed in a rectangular shape, and a guide rod 7 is fixedly installed on the side of the four lifting seats 6 facing the water bath 2, and the tops of the output shafts of the front and rear two stepper motors 5 are fixedly connected to screw rods 8, and the outer sides of the two screw rods 8 are respectively connected to the The internal thread transmission connection of the support frame 9, the four corners of the support frame 9 are respectively slidably connected to the outside of the four guide rods 7, the top of the support frame 9 is fixedly connected to the equal-diameter crankshaft 10, the top of the equal-diameter crankshaft 10 is fixedly connected to the bottom of the lifting drag 11, the bottom of the support frame 9 is fixedly connected to the oscillation motor 12 through the bracket, the top of the output shaft of the oscillation motor 12 is fixedly connected to the bottom of the equal-diameter crankshaft 10, the front and rear sides of the test tube rack 4 are fixedly installed with a lifting frame 13, the top of the lifting drag 11 is fixedly installed with a support rod 14 whose top is fixedly connected to the bottom of the lifting frame 13, and the test tube body 15 is placed inside the test tube rack 4.

[0028] As a preference of this embodiment, a docking groove 16 is fixedly installed inside the test tube rack 4 , and a plurality of evenly distributed placement grooves 17 are opened inside the test tube rack 4 , and the test tube bodies 15 are located inside the placement grooves 17 .

[0029] The cooperation between the docking groove 16 and the placement groove 17 facilitates the placement of multiple test tube bodies 15 inside the test tube rack 4, making them more stable during the subsequent boiling water bath process.

[0030] As a preference of this embodiment, the number of the equal-diameter crankshafts 10 is four and they are arranged in groups of two and are symmetrically distributed front to back. The top of the output shaft of the oscillation motor 12 is fixedly connected to the bottom of the equal-diameter crankshaft 10 on the front left.

[0031] Only one oscillation motor 12 is needed to cooperate with four equal-diameter crankshafts 10 at different positions to make the lifting drag 11 start to oscillate, and the oscillation force is transmitted through the support rod 14, so that the sample inside the test tube body 15 is mixed during the oscillation process. There is no need to shake it manually, and the effect of oscillation is better.

[0032] As a preference of this embodiment, the number of support rods 14 is four and they are symmetrically distributed in groups of two in the front and back. The top of the lifting drag 11 is provided with four positioning grooves 18 whose positions correspond to the support rods 14. A polyfluoroethylene sleeve 19 is provided inside the positioning groove 18. The bottom of the support rod 14 is located inside the polyfluoroethylene sleeve 19. A rubber pad 20 is provided on the outside of the support rod 14.

[0033] The support rod 14 is provided with sufficient supporting effect during use, and the shock force is prevented from damaging the connection between the support rod 14 and the lifting drag 11 and the lifting frame 13.

[0034] As a preferred embodiment of this embodiment, a lifting sensing bracket 21 is fixedly installed on the bottom of the inner wall of the body 1, and two lifting sensors 22 are fixedly installed on the right side of the lifting sensing bracket 21 and are symmetrically distributed up and down. A sensing block 23 is fixedly installed on the right side of the support frame 9, and the left side of the sensing block 23 is located on the right side of the lifting sensing bracket 21.

[0035] The support frame 9 drives the induction block 23 to move during the rising process. When the induction block 23 reaches the position of the lifting sensor 22, a signal is transmitted to stop the two stepping motors 5 to facilitate subsequent operations.

[0036] As a preference of this embodiment, a distillation hood 24 located outside the test tube body 15 is movably installed inside the test tube rack 4 .

[0037] The effect of the boiling water bath on the samples in the test tube bodies 15 in the test tube rack 4 is enhanced.

[0038] Working principle: water is added to the inside through the water inlet pipe at the bottom of the water bath 2, and the heating rod 3 is started to heat the water, and the sample in the test tube body 15 placed inside the test tube rack 4 begins to be boiled in water. The stepper motor 5 is started so that its output shaft acts on the bottom of the screw rod 8, thereby rotating the screw rod 8. With the cooperation of the guide rod 7, the support frame 9 is raised, and at the same time, the equal-diameter crankshaft 10 drives the lifting drag 11 to rise, and the lifting frames 13 on the front and rear sides of the test tube rack 4 are driven to rise through the support rod 14, so that the test tube body 15 is also raised, which is convenient for the subsequent removal of the test tube body 15. Under the action of the oscillation motor 12, the oscillation force is transmitted to mix the samples in the test tube body 15.

[0039] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0040] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiling water bath digestion device, comprising a body (1), characterized in that: A water bath (2) is fixedly mounted on the bottom of the inner wall of the machine body (1), a heating rod (3) is fixedly mounted inside the water bath (2), a test tube rack (4) is movably mounted inside the water bath (2), two stepper motors (5) are fixedly mounted on the bottom of the inner wall of the machine body (1) and are symmetrically distributed front to back, four lifting seats (6) are fixedly mounted on the bottom of the inner wall of the machine body (1) and are distributed in a rectangular shape, a guide rod (7) is fixedly mounted on the side of the four lifting seats (6) facing the water bath (2), a screw rod (8) is fixedly connected to the top of the output shaft of the front and rear two stepper motors (5), and the outer sides of the two screw rods (8) are respectively connected to the internal thread transmission of the support frame (9). The four corners of the support frame (9) are respectively slidably connected to the outer sides of the four guide rods (7); the top of the support frame (9) is fixedly connected to an equal-diameter crankshaft (10); the top of the equal-diameter crankshaft (10) is fixedly connected to the bottom of the lifting drag (11); the bottom of the support frame (9) is fixedly connected to an oscillation motor (12) through a bracket; the top of the output shaft of the oscillation motor (12) is fixedly connected to the bottom of the equal-diameter crankshaft (10); the front and rear sides of the test tube rack (4) are fixedly installed with a lifting rack (13); the top of the lifting drag (11) is fixedly installed with a support rod (14) whose top is fixedly connected to the bottom of the lifting rack (13); and the test tube body (15) is placed inside the test tube rack (4).

2. A boiling water bath digestion device according to claim 1, characterized in that: The bottom of the test tube rack (4) is provided with a docking groove (16), and the interior of the test tube rack (4) is provided with a plurality of evenly distributed placement grooves (17), and the test tube body (15) is located inside the placement grooves (17).

3. A boiling water bath digestion device according to claim 1, characterized in that: The number of the equal-diameter crankshafts (10) is four and they are arranged in groups of two and are symmetrically distributed front to back. The top of the output shaft of the oscillation motor (12) is fixedly connected to the bottom of the equal-diameter crankshaft (10) on the front left.

4. A boiling water bath digestion device according to claim 1, characterized in that: The number of the support rods (14) is four and they form a group of two and are symmetrically distributed front to back. The top of the lifting drag (11) is provided with four positioning grooves (18) whose positions correspond to the support rods (14). A polytetrafluoroethylene sleeve (19) is provided inside the positioning groove (18). The bottom of the support rod (14) is located inside the polytetrafluoroethylene sleeve (19). A rubber pad (20) is provided on the outside of the support rod (14).

5. A boiling water bath digestion device according to claim 1, characterized in that: A lifting induction bracket (21) is fixedly mounted on the bottom of the inner wall of the machine body (1); two lifting sensors (22) are fixedly mounted on the right side of the lifting induction bracket (21) and are symmetrically distributed up and down; a sensing block (23) is fixedly mounted on the right side of the support frame (9); and the left side of the sensing block (23) is located on the right side of the lifting induction bracket (21).

6. A boiling water bath digestion device according to claim 1, characterized in that: A distillation cover (24) located outside the test tube body (15) is movably installed inside the test tube rack (4).

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