Soil heavy metal digestion device

Abstract

The utility model relates to the technical field of soil heavy metal digestion, and discloses a soil heavy metal digestion device which comprises a base, the top of the base is fixedly connected with a limiting cover, a crucible is movably sleeved with the limiting cover, and an electric heating plate is fixedly installed at the bottom of an inner cavity of the limiting cover. The bottom of the crucible is in lap joint with the top of the electric heating plate, a digestion solution adding mechanism is mounted on the right side of the top of the base, a mixing mechanism is arranged above the crucible, and the digestion solution adding mechanism comprises a liquid storage tank. The electric telescopic rod is matched with the connecting frame, so that one end of the L-shaped liquid discharge pipe is conveniently driven to move to the position above the crucible, air is compressed into the liquid storage tank through the air compressor at the moment, a digestion solution is pressed into the guide pipe and is discharged through the hose and the L-shaped liquid discharge pipe, and therefore the digestion solution can be conveniently added into the crucible; and the safety and the convenience when the digestion solution is added are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of soil heavy metal decomposition, and more particularly to a soil heavy metal decomposition device. Background Art

[0002] Soil heavy metal detection requires digestion first, and then analysis by an analyzer.

[0003] For example, the Chinese patent application number "CN202110737171.2" discloses a soil heavy metal digestion device, including a chassis unit and a stirring unit, wherein the chassis unit includes a base and an electric heating plate, and the electric heating plate is rotatably arranged on the base; the stirring unit includes a support arm and a stirring shaft, the height of the support arm can be adjusted, the stirring shaft is rotatably connected to the support arm, and the stirring shaft is connected to a stirring blade. During operation, the soil sample is added to the crucible, and the electric heating plate can heat the crucible. After adding the digestion solution to the soil sample, the height of the support arm is adjusted so that the stirring shaft and the stirring blade are extended into the crucible. The stirring shaft drives the stirring blade to rotate to stir the sample, thereby improving the mixing uniformity and improving the digestion work efficiency; the electric heating plate can accommodate multiple crucibles, and the electric heating plate can drive the crucible to rotate. After completing the stirring of the mixture in one crucible, the electric heating plate drives the crucible to rotate, so that the stirring shaft and the stirring blade can stir the mixture in other crucibles, thereby improving work efficiency;

[0004] After the product is improved, the soil heavy metal digestion device can improve the digestion efficiency by stirring the sample. However, when digesting the soil sample, the digestion solution needs to be manually added to the crucible. Since the digestion solution is corrosive, manual addition is dangerous. In addition, when the device stirs and mixes the soil sample and the digestion solution inside the crucible, the soil sample attached to the inner wall of the crucible cannot be scraped off. Some soil samples are easily attached to the inner wall of the crucible, thereby affecting the digestion efficiency. This needs to be improved. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a soil heavy metal digestion device to solve the problems existing in the above-mentioned background technology.

[0006] The utility model provides the following technical solution: a soil heavy metal digestion device, comprising a base, the top of the base is fixedly connected to a limiting cover, a crucible is movably sleeved inside the limiting cover, an electric heating plate is fixedly installed at the bottom of the inner cavity of the limiting cover, the bottom of the crucible is overlapped on the top of the electric heating plate, a digestion solution adding mechanism is installed on the right side of the top of the base, and a mixing mechanism is provided above the crucible;

[0007] The digestion solution adding mechanism includes a liquid storage tank, the bottom of the liquid storage tank is fixedly mounted on the right side of the top of the base, the interior of the liquid storage tank is provided with a digestion solution, the middle part of the top of the liquid storage tank is provided with an air compressor, the output end of the air compressor is fixedly mounted on the middle part of the top of the liquid storage tank, the input end of the air compressor is fixedly mounted with an air filter, an electric telescopic rod is fixedly mounted above the left side of the liquid storage tank, the telescopic end of the electric telescopic rod is fixedly connected to a connecting frame, an L-shaped drain pipe is fixedly connected to the lower part of the interior of the connecting frame, and the L-shaped drain pipe is located above the right side of the crucible;

[0008] The mixing mechanism includes a rotating shaft, which is located directly above the crucible. The bottom end of the rotating shaft is fixedly connected to a scraper adapted to the inner wall of the crucible, and the outer wall of the rotating shaft is fixedly connected to a stirring frame.

[0009] Furthermore, a conduit is fixedly connected to the lower left side of the liquid storage tank, a solenoid valve is installed on the conduit, one end of the conduit is fixedly connected to a hose, and one end of the hose is fixedly connected to the right end of the L-shaped drain pipe.

[0010] Furthermore, a through opening is provided in the middle of the top of the liquid storage tank, and the through opening is located below the output end of the air compressor.

[0011] Furthermore, a support plate is fixedly connected to the left side of the top of the base, and a limiting slot is provided on the right side of the support plate. A No. 1 motor is fixedly installed in the middle of the top of the inner cavity of the limiting slot, and a screw rod is fixedly connected to the output end of the No. 1 motor. The bottom end of the screw rod is rotatably connected to the bottom of the inner cavity of the limiting slot. A lifting plate is provided inside the limiting slot, and the middle part of the lifting plate is threadedly sleeved on the outer wall of the screw rod.

[0012] Furthermore, guide rods are slidably sleeved inside the two ends of the lifting plate, and the two ends of the guide rods are fixedly connected to the top and bottom of the inner wall of the limiting groove.

[0013] Furthermore, a mounting plate is fixedly connected to the right side of the lifting plate, a No. 2 motor is fixedly mounted on the top of the mounting plate, and an output end of the No. 2 motor extends to the bottom of the mounting plate and is fixedly connected to the top of the rotating shaft.

[0014] Furthermore, a crucible cover is fixedly mounted below the mounting plate, and a middle portion of the crucible cover is movably sleeved on the outer wall of the rotating shaft.

[0015] The technical effects and advantages of this utility model are:

[0016] 1. The utility model adopts the cooperation of the electric telescopic rod and the connecting frame to facilitate the movement of one end of the L-shaped discharge pipe to the top of the crucible. At this time, the air is compressed into the liquid storage tank through the air compressor, and the digestion solution is pressed into the conduit and discharged through the hose and the L-shaped discharge pipe, thereby facilitating the addition of the digestion solution into the crucible and improving the safety and convenience when adding the digestion solution.

[0017] 2. After adding the soil sample and the digestion solution into the crucible, the utility model adopts the cooperation of the support plate, the limiting groove, the No. 1 motor, the screw rod, the lifting plate, the guide rod, the mounting plate and the No. 2 motor to facilitate driving the rotating shaft, the stirring frame and the scraper to move into the crucible, and at the same time drive the crucible cover to move to the top of the crucible. At this time, the rotating shaft, the stirring frame and the scraper are driven to rotate by the No. 2 motor, so as to facilitate stirring and mixing the soil sample and the digestion solution. At the same time, the scraper is used to scrape off the soil sample attached to the inner wall of the crucible, thereby avoiding the situation where part of the soil sample adheres to the inner wall of the crucible and affects the digestion efficiency of the soil sample. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0019] Figure 2 It is a schematic cross-sectional view of the overall structure of the utility model.

[0020] Figure 3 It is a side view schematic diagram of the support plate, limit slot, No. 1 motor, lead screw, lifting plate and guide rod structure of the utility model.

[0021] The accompanying drawings are marked as follows: 1. base; 2. digestion solution adding mechanism; 3. mixing mechanism; 4. limit cover; 5. electric heating plate; 6. crucible; 21. liquid storage tank; 22. air compressor; 23. conduit; 24. solenoid valve; 25. hose; 26. L-shaped drain pipe; 27. electric telescopic rod; 28. connecting frame; 29. opening; 31. support plate; 311. limit groove; 312. No. 1 motor; 313. screw rod; 314. lifting plate; 315. guide rod; 32. mounting plate; 33. No. 2 motor; 34. rotating shaft; 35. stirring frame; 36. scraper; 37. crucible cover. DETAILED DESCRIPTION

[0022] The technical solution of the present invention will be clearly and completely described below in conjunction with the drawings in the present invention. In addition, the forms of the various structures described in the following embodiments are merely examples. The soil heavy metal decomposition device involved in the present invention is not limited to the various structures described in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] Example 1:

[0024] like Figure 1-3 As shown, a soil heavy metal digestion device includes a base 1, the top of the base 1 is fixedly connected to a limiting cover 4, the limiting cover 4 has a crucible 6 movably sleeved inside, the bottom of the inner cavity of the limiting cover 4 is fixedly installed with an electric heating plate 5, the bottom of the crucible 6 is overlapped on the top of the electric heating plate 5, a digestion solution adding mechanism 2 is installed on the right side of the top of the base 1, the digestion solution adding mechanism 2 includes a liquid storage tank 21, the bottom of the liquid storage tank 21 is fixedly installed on the right side of the top of the base 1, the liquid storage tank 21 is provided with a digestion solution, the middle part of the top of the liquid storage tank 21 is provided with an air compressor 22, the output end of the air compressor 22 is fixedly installed in the middle part of the top of the liquid storage tank 21, and the air compressor 22 is provided with a An air filter is fixedly installed at the input end of the machine 22, an electric telescopic rod 27 is fixedly installed above the left side of the liquid storage tank 21, the telescopic end of the electric telescopic rod 27 is fixedly connected to a connecting frame 28, an L-shaped drain pipe 26 is fixedly connected to the lower part of the connecting frame 28, the L-shaped drain pipe 26 is located above the right side of the crucible 6, a conduit 23 is fixedly connected to the lower left side of the liquid storage tank 21, a solenoid valve 24 is installed on the conduit 23, one end of the conduit 23 is fixedly connected to a hose 25, one end of the hose 25 is fixedly connected to the right end of the L-shaped drain pipe 26, a through opening 29 is opened in the middle of the top of the liquid storage tank 21, and the through opening 29 is located below the output end of the air compressor 22.

[0025] In this embodiment, the position of the L-shaped drain pipe 26 can be adjusted by cooperating with the electric telescopic rod 27 and the connecting frame 28, so that the L-shaped drain pipe 26 can be moved to the top of the crucible 6, and the air is compressed into the liquid storage tank 21 through the opening 29 by the air compressor 22, and the digestion solution is pressed into the conduit 23 with strong pressure and discharged through the hose 25 and the L-shaped drain pipe 26, so as to facilitate the addition of the digestion solution to the crucible 6. The setting of the limiting cover 4 facilitates the limiting of the bottom of the crucible 6. After the soil sample and the digestion solution are added to the crucible 6, the setting of the electric heating plate 5 facilitates the heating of the crucible 6, thereby performing a digestion operation on the soil sample.

[0026] Example 2:

[0027] like Figure 1-3As shown, a mixing mechanism 3 is provided above the crucible 6, and the mixing mechanism 3 includes a rotating shaft 34, the rotating shaft 34 is located just above the crucible 6, the bottom end of the rotating shaft 34 is fixedly connected to a scraper 36 adapted to the inner wall of the crucible 6, the outer wall of the rotating shaft 34 is fixedly connected to a stirring frame 35, the left side of the top of the base 1 is fixedly connected to a support plate 31, and a limiting groove 311 is provided on the right side of the support plate 31, and a No. 1 motor 312 is fixedly installed in the middle of the top of the inner cavity of the limiting groove 311, and the output end of the No. 1 motor 312 is fixedly connected to a screw rod 313, and the bottom end of the screw rod 313 is rotatably connected to the bottom of the inner cavity of the limiting groove 311. A lifting plate 314 is provided inside 311, and the middle part of the lifting plate 314 is threadedly sleeved on the outer wall of the screw rod 313. The internal sliding sleeves of the two ends of the lifting plate 314 are provided with guide rods 315, and the two ends of the guide rod 315 are fixedly connected to the top and bottom of the inner wall of the limiting groove 311. The right side of the lifting plate 314 is fixedly connected to the mounting plate 32, and the top of the mounting plate 32 is fixedly installed with the No. 2 motor 33. The output end of the No. 2 motor 33 extends to the bottom of the mounting plate 32 and is fixedly connected to the top of the rotating shaft 34. A crucible cover 37 is fixedly installed below the mounting plate 32, and the middle part of the crucible cover 37 is movably sleeved on the outer wall of the rotating shaft 34.

[0028] In this embodiment, the cooperation between the No. 1 motor 312 and the screw rod 313 is convenient for driving the lifting plate 314 to move, and the guide rod 315 is used to vertically guide the lifting plate 314. At this time, the lifting plate 314 can drive the mounting plate 32, the No. 2 motor 33, the rotating shaft 34, the stirring frame 35, the scraper 36 and the crucible cover 37 to move downward, move the rotating shaft 34, the stirring frame 35 and the scraper 36 into the crucible 6, and at the same time drive the crucible cover 37 to move to the top of the crucible 6, and use the crucible cover 37 to protect the top of the crucible 6. Then, the cooperation between the No. 2 motor 33 and the rotating shaft 34 is convenient for driving the stirring frame 35 and the scraper 36 to rotate inside the crucible 6, and use the stirring frame 35 to stir and mix the soil sample and the digestion solution. At the same time, use the scraper 36 to scrape off the soil sample attached to the inner wall of the crucible 6, thereby preventing the soil sample from adhering to the inner wall of the crucible 6 and affecting the digestion efficiency.

[0029] In summary, if Figure 1-3As shown, when using the soil heavy metal digestion device, the heavy metal soil sample is first put into the crucible 6, and then the connecting frame 28 and the L-shaped drainage pipe 26 are driven to move by the telescopic end of the electric telescopic rod 27, and one end of the L-shaped drainage pipe 26 is moved to the top of the crucible 6. At this time, the solenoid valve 24 is opened, and the air is compressed into the liquid storage tank 21 by the air compressor 22, and the digestion solution is pressed into the conduit 23 by strong pressure, and discharged through the hose 25 and the L-shaped drainage pipe 26, thereby adding the digestion solution to the crucible 6. After the digestion solution is added, the air compressor 22 and the solenoid valve 24 are closed, and the connecting frame 28 and the L-shaped drainage pipe 26 are driven to reset by the telescopic end of the electric telescopic rod 27. At this time, the first motor 312 is turned on. The output end drives the screw rod 313 to rotate, and the screw rod 313 drives the lifting plate 314 to move vertically downward on the outer wall of the guide rod 315. The lifting plate 314 simultaneously drives the mounting plate 32, the second motor 33, the rotating shaft 34, the stirring frame 35, the scraper 36 and the crucible cover 37 to move downward, and moves the rotating shaft 34, the stirring frame 35 and the scraper 36 to the inside of the crucible 6, and at the same time drives the crucible cover 37 to move to the top of the crucible 6. At this time, the rotating shaft 34, the stirring frame 35 and the scraper 36 are driven to rotate by the second motor 33, and the stirring frame 35 is used to stir and mix the soil sample and the digestion solution. At the same time, the scraper 36 is used to scrape off the soil sample attached to the inner wall of the crucible 6, and the crucible 6 is heated by the electric heating plate 5 to digest the soil sample.

[0030] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0031] Secondly: The drawings of the embodiments disclosed in this utility model only involve structures related to the embodiments disclosed in this utility model. Other structures can refer to common designs. In the absence of conflicts, the same embodiment and different embodiments of the utility model can be combined with each other.

[0032] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A soil heavy metal digestion device, comprising a base (1), characterized in that: The top of the base (1) is fixedly connected to a limiting cover (4), a crucible (6) is movably sleeved inside the limiting cover (4), an electric heating plate (5) is fixedly installed at the bottom of the inner cavity of the limiting cover (4), the bottom of the crucible (6) is overlapped on the top of the electric heating plate (5), a digestion solution adding mechanism (2) is installed on the right side of the top of the base (1), and a mixing mechanism (3) is provided above the crucible (6); The digestion solution adding mechanism (2) comprises a liquid storage tank (21), the bottom of the liquid storage tank (21) is fixedly mounted on the right side of the top of the base (1), the interior of the liquid storage tank (21) is provided with a digestion solution, an air compressor (22) is provided in the middle of the top of the liquid storage tank (21), the output end of the air compressor (22) is fixedly mounted on the middle of the top of the liquid storage tank (21), the input end of the air compressor (22) is fixedly mounted with an air filter, an electric telescopic rod (27) is fixedly mounted above the left side of the liquid storage tank (21), the telescopic end of the electric telescopic rod (27) is fixedly connected to a connecting frame (28), an L-shaped drain pipe (26) is fixedly connected to the lower part of the interior of the connecting frame (28), and the L-shaped drain pipe (26) is located above the right side of the crucible (6); The mixing mechanism (3) includes a rotating shaft (34), the rotating shaft (34) is located directly above the crucible (6), the bottom end of the rotating shaft (34) is fixedly connected to a scraper (36) adapted to the inner wall of the crucible (6), and the outer wall of the rotating shaft (34) is fixedly connected to a stirring frame (35).

2. A soil heavy metal digestion device according to claim 1, characterized in that: A conduit (23) is fixedly connected to the lower portion of the left side of the liquid storage tank (21), a solenoid valve (24) is installed on the conduit (23), one end of the conduit (23) is fixedly connected to a hose (25), and one end of the hose (25) is fixedly connected to the right end of the L-shaped drain pipe (26).

3. The soil heavy metal decomposition device according to claim 1, characterized in that: A through opening (29) is provided in the middle of the top of the liquid storage tank (21), and the through opening (29) is located below the output end of the air compressor (22).

4. The soil heavy metal decomposition device according to claim 1, characterized in that: A support plate (31) is fixedly connected to the left side of the top of the base (1), a limiting slot (311) is provided on the right side of the support plate (31), a No. 1 motor (312) is fixedly installed in the middle of the top of the inner cavity of the limiting slot (311), an output end of the No. 1 motor (312) is fixedly connected to a screw rod (313), the bottom end of the screw rod (313) is rotatably connected to the bottom of the inner cavity of the limiting slot (311), a lifting plate (314) is provided inside the limiting slot (311), and the middle part of the lifting plate (314) is threadedly sleeved on the outer wall of the screw rod (313).

5. The soil heavy metal decomposition device according to claim 4, characterized in that: The two ends of the lifting plate (314) are internally slidably sleeved with guide rods (315), and the two ends of the guide rods (315) are fixedly connected to the top and bottom of the inner wall of the limiting groove (311).

6. The soil heavy metal decomposition device according to claim 4, characterized in that: The right side of the lifting plate (314) is fixedly connected to a mounting plate (32), a second motor (33) is fixedly mounted on the top of the mounting plate (32), and an output end of the second motor (33) extends to the bottom of the mounting plate (32) and is fixedly connected to the top of the rotating shaft (34).

7. The soil heavy metal decomposition device according to claim 6, characterized in that: A crucible cover (37) is fixedly mounted below the mounting plate (32), and a middle portion of the crucible cover (37) is movably sleeved on the outer wall of the rotating shaft (34).

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