Pretreatment device for soil heavy metal detection

Abstract

The utility model discloses a pretreatment device for soil heavy metal detection, and belongs to the field of soil detection. The utility model discloses a pretreatment device for soil heavy metal detection. The pretreatment device comprises a shell, the control mechanism is arranged in the shell; the shaking mechanism is arranged at the top of the control mechanism and is used for shaking the sample; the placing cylinder is arranged at the top of the shaking mechanism and is used for placing a beaker inside; the liquid injection mechanism is arranged at the top of the placing cylinder and is used for injecting liquid; during use, a beaker is placed in the placement barrel, strong acid is injected into the beaker through the liquid injection mechanism, the placement barrel is driven by the shaking mechanism to shake to mix soil with the strong acid, toxic gas in the shell is filtered and then discharged through the exhaust mechanism, and a solution can be prevented from spilling out during shaking; toxic gas in the shell is discharged; when in use, a solution can be better shaken and mixed, the solution is prevented from spilling out, and toxic gas generated during heating is filtered and then discharged.

Description

Technical Field

[0001] The utility model relates to the technical field of soil detection, in particular to a pre-processing device for soil heavy metal detection. Background Art

[0002] Soil heavy metal testing is a means to determine whether the soil is contaminated by heavy metals. It can help technicians scientifically understand the soil environment, find the root cause of soil heavy metal pollution, and carry out scientific prevention and control of soil pollution as soon as possible. Before soil heavy metal testing, samples need to be pre-treated. Common methods include wet digestion, dry ash digestion, microwave digestion, etc.

[0003] After searching, the Chinese patent announcement number CN219104502U discloses a soil heavy metal detection pretreatment device, including a shell, a shaking assembly is provided inside the shell, a liquid adding assembly is provided on the left side of the shell, and an electric heating plate is fixedly installed on the inner bottom wall of the shell. The shaking assembly includes a T-shaped slot opened on the inner top wall of the shell, a spring is fixedly connected to the left side of the T-shaped slot, a slide is fixedly connected to the right side of the spring, a motor is fixedly connected to the right side of the upper surface of the shell, and the output shaft of the motor is fixedly connected to a cam located inside the T-shaped slot, and the bottom wall of the slide is fixedly connected to two left and right obliquely symmetrical hydraulic telescopic rods. The soil heavy metal detection pretreatment device can avoid the situation that strong acid spills on the arm during manual operation, and can automatically shake to fully mix the solution with the sample, automatically add liquid quantitatively, and effectively improve the practical performance of the soil heavy metal detection pretreatment device. The shaking assembly in the above patent has the following shortcomings: the solution inside the beaker will spill out due to inertia through the left and right swing during shaking; and a large amount of toxic gas will be generated during use, which will cause harm to the environment and staff. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that toxic gases easily spilled and generated during shaking cause harm to the environment and workers, and proposes a pre-treatment device for soil heavy metal detection.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A pre-treatment device for soil heavy metal detection, comprising:

[0007] shell;

[0008] A control mechanism is arranged inside the housing;

[0009] A shaking mechanism, arranged on the top of the control mechanism, for shaking the sample;

[0010] A placing cylinder is arranged on the top of the shaking mechanism and is used for placing the beaker inside;

[0011] A liquid injection mechanism, arranged on the top of the placement cylinder, for injecting liquid;

[0012] The exhaust mechanism is arranged on the inner wall of the shell and is used for filtering and exhausting the internal gas.

[0013] As a preferred technical solution of the present application, a sealing door is installed on the outer wall of the shell, a hinge for connection is provided between the shell and the sealing door, a handle is provided at one end of the sealing door away from the shell, and a first observation glass is embedded in the sealing door.

[0014] As a preferred technical solution of the present application, the control mechanism includes a drive motor arranged inside the housing, a drive shaft arranged on the top of the drive motor, a rotating block arranged on the top of the drive shaft, and a movable hole opened on the top of the rotating block.

[0015] As a preferred technical solution of the present application, the rocking mechanism includes a support block arranged inside the outer shell, a first movable shaft arranged on the inner wall of the support block, a rocking rod installed inside the support block, a second movable shaft arranged on the outer wall of the rocking rod, a movable ring installed on the outer wall of the rocking rod, four movable mounting blocks distributed in a ring shape on the inner wall of the movable ring, a connecting rod arranged at the bottom of the rocking rod, and a movable ball head arranged at the bottom of the connecting rod.

[0016] As a preferred technical solution of the present application, the first movable shaft and the second movable shaft are installed in a movable mounting block on the movable ring, and the rocking rod is installed in the movable hole through the movable ball head at the bottom of the connecting rod.

[0017] As a preferred technical solution of the present application, a second observation glass is embedded in the outer wall of the placing tube, a mounting groove is provided on the inner wall of the placing tube, a heating ring corresponding to the mounting groove is installed on the inner wall of the placing tube, a thread is provided on the outer wall of the placing tube, a sealing cover is installed on the top of the placing tube, anti-slip grooves are provided on the outer wall of the sealing cover, and a liquid injection hole is provided on the top of the sealing cover.

[0018] As a preferred technical solution of the present application, the injection mechanism includes a bellows installed inside the injection hole, a clamping ring arranged at one end of the bellows close to the injection hole, a metering pump arranged at one end of the bellows away from the clamping ring, and a liquid storage tank arranged at one end of the metering pump away from the bellows.

[0019] As a preferred technical solution of the present application, the exhaust mechanism includes a filter block arranged on the inner wall of the shell, an air pump embedded in the inner wall of the shell and located at one end of the filter block, and an exhaust pipe arranged at the end of the air pump away from the filter block.

[0020] Compared with the prior art, the utility model provides a pre-treatment device for soil heavy metal detection, which has the following beneficial effects:

[0021] 1. The soil heavy metal detection pretreatment device, through the support block, the first movable shaft, the driving motor, the driving shaft, the rotating block, the movable hole, the shaking rod, the connecting rod, the movable ball head, the second movable shaft, the movable ring, the placing tube, the second observation glass, the installation groove, the heating ring, the thread and the sealing cover, put the beaker into the placing tube, then install the sealing cover on the placing tube through the thread, and then turn on the driving motor to drive the rotating block to rotate through the driving shaft. Because the shaking rod is installed in the movable hole through the movable ball head at the bottom of the connecting rod, the outer wall of the shaking rod is movably installed on the movable ring through the second movable shaft, and the movable ring and the side are movably installed on the supporting block, so when the rotating block rotates, the shaking rod can be driven to swing, and the placing tube is driven to shake by the swing of the shaking rod, so that the shaking effect is better and the solution can be prevented from spilling out, which solves the problem of easy spilling of the solution during shaking in the prior art;

[0022] 2. The soil heavy metal detection pretreatment device has a shell, an air pump, an exhaust pipe and a filter block. When toxic gas appears during heating, the air pump is turned on to filter the air inside the shell through the filter block and then be discharged from the exhaust pipe, thus solving the problem of toxic gas generated in the prior art causing harm to the environment and workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the overall structure of a pre-treatment device for soil heavy metal detection proposed by the utility model;

[0024] Figure 2 This is a side structural schematic diagram of a pre-processing device for soil heavy metal detection proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of the explosion structure of the exhaust mechanism of a pre-treatment device for soil heavy metal detection proposed by the utility model;

[0026] Figure 4 This is a schematic diagram of the explosion structure of a control mechanism and a shaking mechanism of a pre-processing device for soil heavy metal detection proposed by the utility model;

[0027] Figure 5 The utility model proposes a pre-processing device for soil heavy metal detection Figure 4 The enlarged structural diagram at A in the middle;

[0028] Figure 6 This is a schematic diagram of the explosion structure of a placement tube of a pre-treatment device for soil heavy metal detection proposed by the utility model;

[0029] Figure 7 The utility model discloses a schematic diagram of the explosion structure of the liquid injection mechanism of a pre-treatment device for soil heavy metal detection.

[0030] In the figure:

[0031] 1. Shell; 101. Sealed door; 102. Hinge; 103. Handle; 104. First observation glass; 2. Support block; 201. First movable axis; 202. Drive motor; 203. Drive axis; 204. Rotating block; 205. Movable hole; 206. Shaking rod; 207. Connecting rod; 208. Movable ball head; 209. Second movable axis; 210. Movable ring; 211. Movable mounting block; 3. Placement cylinder; 301. Second observation glass; 302. Mounting groove; 303. Heating ring; 304. Thread; 305. Sealing cover; 306. Anti-skid pattern; 307. Filling hole; 4. Bellows; 401. Snap ring; 402. Metering pump; 403. Liquid storage box; 5. Filter block; 501. Air pump; 502. Exhaust pipe. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0033] Example:

[0034] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 , a pre-treatment device for soil heavy metal detection, comprising:

[0035] Shell 1;

[0036] A control mechanism is arranged inside the housing 1;

[0037] A shaking mechanism, arranged on the top of the control mechanism, for shaking the sample;

[0038] A placing cylinder 3 is arranged on the top of the shaking mechanism and is used to place the beaker inside;

[0039] A liquid injection mechanism, arranged on the top of the placement tube 3, for injecting liquid;

[0040] The exhaust mechanism is arranged on the inner wall of the outer shell 1, and is used for filtering and discharging the internal gas. When in use, the beaker is placed in the placement tube 3, and then the strong acid is injected into the beaker through the injection mechanism, and then the placement tube 3 is driven by the shaking mechanism to shake the soil and the strong acid, and then the toxic gas inside the outer shell 1 is filtered and discharged through the exhaust mechanism. The solution can be prevented from spilling out during shaking, and the toxic gas inside the outer shell 1 can be discharged.

[0041] Reference Figure 1 and Figure 2 , a pretreatment device for soil heavy metal detection, further, a sealed door 101 is installed on the outer wall of the shell 1, a hinge 102 for connection is provided between the shell 1 and the sealed door 101, a handle 103 is provided at the end of the sealed door 101 away from the shell 1, and a first observation glass 104 is embedded in the sealed door 101. The sealed door 101 is opened by the handle 103, and the hinge 102 can facilitate the opening of the sealed door 101. The embedded first observation glass 104 can facilitate the staff to observe the interior when in use.

[0042] Reference Figure 4 , a pretreatment device for soil heavy metal detection. Furthermore, the control mechanism includes a driving motor 202 arranged inside the shell 1, a driving shaft 203 arranged on the top of the driving motor 202, a rotating block 204 arranged on the top of the driving shaft 203, and a movable hole 205 opened on the top of the rotating block 204. When in use, the driving motor 202 is turned on, and the rotating block 204 is driven to rotate through the driving shaft 203, so that the start of the shaking mechanism can be controlled.

[0043] Reference Figure 4 and Figure 5 , a pretreatment device for soil heavy metal detection, further, the shaking mechanism includes a support block 2 arranged inside the shell 1, a first movable shaft 201 arranged on the inner wall of the support block 2, a shaking rod 206 installed inside the support block 2, a second movable shaft 209 arranged on the outer wall of the shaking rod 206, an movable ring 210 installed on the outer wall of the shaking rod 206, four movable mounting blocks 211 distributed in a ring shape on the inner wall of the movable ring 210, a connecting rod 207 arranged at the bottom of the shaking rod 206, and an movable ball head 208 arranged at the bottom of the connecting rod 207. Because the shaking rod 206 is installed in the movable hole 205 through the movable ball head 208 at the bottom of the connecting rod 207, the outer wall of the shaking rod 206 is movably installed on the movable ring 210 through the second movable shaft 209, and the movable ring 210 is movably installed on the support block 2, so when the rotating block 204 rotates, the shaking rod 206 can be driven to swing, and the soil and strong acid can be mixed by shaking.

[0044] Reference Figure 5, a pretreatment device for soil heavy metal detection. Furthermore, the first movable shaft 201 and the second movable shaft 209 are installed in the movable mounting block 211 on the movable ring 210, and the shaking rod 206 is installed in the movable hole 205 through the movable ball head 208 at the bottom of the connecting rod 207. Since the first movable shaft 201 and the second movable shaft 209 are movably connected with the movable mounting block 211, the shaking rod 206 can be freely shaken inside the supporting block 2. At the same time, the shaking rod 206 is installed in the movable hole 205 in conjunction with the movable ball head 208 at the bottom of the connecting rod 207, and the shaking rod 206 can be driven to shake through the rotating block 204.

[0045] Reference Figure 6 , a pretreatment device for soil heavy metal detection, further, a second observation glass 301 is embedded in the outer wall of the placing tube 3, a mounting groove 302 is provided on the inner wall of the placing tube 3, a heating ring 303 corresponding to the mounting groove 302 is installed on the inner wall of the placing tube 3, a thread 304 is provided on the outer wall of the placing tube 3, a sealing cover 305 is installed on the top of the placing tube 3, an anti-slip pattern 306 is provided on the outer wall of the sealing cover 305, and an injection hole 307 is provided on the top of the sealing cover 305. When in use, the sealing cover 305 is installed on the top of the placing tube 3 through the thread 304, and the anti-slip pattern 306 can prevent slipping, and then the heating ring 303 inside the placing tube 3 is turned on, the beaker can be heated, so that the strong acid and the soil are better mixed.

[0046] Reference Figure 7 , a pretreatment device for soil heavy metal detection, further, the injection mechanism includes a bellows 4 installed inside the injection hole 307, a clamping ring 401 arranged at the end of the bellows 4 close to the injection hole 307, a metering pump 402 arranged at the end of the bellows 4 away from the clamping ring 401, and a liquid storage tank 403 arranged at the end of the metering pump 402 away from the bellows 4. When the metering pump 402 is turned on, the metering pump 402 draws out the strong acid in the liquid storage tank 403 and injects it into the beaker through the bellows 4 to mix the strong acid with the soil.

[0047] Reference Figure 3 , a pretreatment device for soil heavy metal detection. Furthermore, the exhaust mechanism includes a filter block 5 arranged on the inner wall of the shell 1, an air pump 501 embedded in the inner wall of the shell 1 and located at one end of the filter block 5, and an exhaust pipe 502 is arranged at the end of the air pump 501 away from the filter block 5. Since toxic gas will appear during heating, the air pump 501 is turned on at this time, and the air inside the shell 1 is filtered by the filter block 5 and then discharged from the exhaust pipe 502, which can prevent the toxic gas from causing harm to the environment and staff.

[0048] Specifically, when the utility model is working / in use: the sealing door 101 is opened by the handle 103, the soil is put into the beaker, and then the beaker is put into the placing tube 3, and then the sealing cover 305 is installed on the placing tube 3 through the thread 304, and then the driving motor 202 is turned on to drive the rotating block 204 to rotate through the driving shaft 203, because the shaking rod 206 is installed in the movable hole 205 through the movable ball head 208 at the bottom of the connecting rod 207, and the outer wall of the shaking rod 206 is movably installed on the movable ring 210 through the second movable shaft 209, and the movable ring 210 is movably installed on the supporting block 2, so when the rotating block 204 rotates, the shaking rod 206 can be driven to swing, and the placing tube 3 is driven to swing by the swinging of the shaking rod 206. At this time, the metering pump 402 is turned on to extract the strong acid in the liquid storage box 403, and inject it into the beaker through the bellows 4. The strong acid and the soil are mixed by shaking. The beaker can be heated by the heating ring 303 on the inner wall of the placing tube 3. Toxic gas will appear during heating. At this time, the air pump 501 is turned on to filter the air inside the outer shell 1 through the filter block 5 and then be discharged from the exhaust pipe 502.

[0049] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pre-treatment device for soil heavy metal detection, characterized in that: include: Housing (1); A control mechanism is arranged inside the housing (1); A shaking mechanism, arranged on the top of the control mechanism, for shaking the sample; A placing cylinder (3) is arranged on the top of the shaking mechanism and is used to place the beaker inside; A liquid injection mechanism, arranged on the top of the placement cylinder (3) and used for liquid injection; The exhaust mechanism is arranged on the inner wall of the outer shell (1) and is used for filtering the internal gas and then exhausting it.

2. A pre-processing device for soil heavy metal detection according to claim 1, characterized in that: A sealing door (101) is installed on the outer wall of the shell (1), a hinge (102) for connection is provided between the shell (1) and the sealing door (101), a handle (103) is provided at one end of the sealing door (101) away from the shell (1), and a first observation glass (104) is embedded in the sealing door (101).

3. A pre-processing device for soil heavy metal detection according to claim 1, characterized in that: The control mechanism comprises a driving motor (202) arranged inside the housing (1), a driving shaft (203) arranged on the top of the driving motor (202), a rotating block (204) arranged on the top of the driving shaft (203), and a movable hole (205) opened on the top of the rotating block (204).

4. A pre-processing device for soil heavy metal detection according to claim 1, characterized in that: The shaking mechanism comprises a support block (2) arranged inside the housing (1), a first movable shaft (201) arranged on the inner wall of the support block (2), a shaking rod (206) installed inside the support block (2), a second movable shaft (209) arranged on the outer wall of the shaking rod (206), a movable ring (210) installed on the outer wall of the shaking rod (206), four movable mounting blocks (211) distributed in an annular shape on the inner wall of the movable ring (210), a connecting rod (207) arranged at the bottom of the shaking rod (206), and a movable ball head (208) arranged at the bottom of the connecting rod (207).

5. A pre-processing device for soil heavy metal detection according to claim 4, characterized in that: The first movable shaft (201) and the second movable shaft (209) are installed in a movable mounting block (211) on a movable ring (210), and the shaking rod (206) is installed in a movable hole (205) via a movable ball head (208) at the bottom of a connecting rod (207).

6. A pre-processing device for soil heavy metal detection according to claim 1, characterized in that: A second observation glass (301) is embedded in the outer wall of the placement tube (3), a mounting groove (302) is provided on the inner wall of the placement tube (3), a heating ring (303) corresponding to the mounting groove (302) is installed on the inner wall of the placement tube (3), a thread (304) is provided on the outer wall of the placement tube (3), a sealing cover (305) is installed on the top of the placement tube (3), an anti-slip groove (306) is provided on the outer wall of the sealing cover (305), and a liquid injection hole (307) is provided on the top of the sealing cover (305).

7. A pre-processing device for soil heavy metal detection according to claim 1, characterized in that: The liquid injection mechanism comprises a bellows (4) installed inside the liquid injection hole (307), a clamping ring (401) arranged at one end of the bellows (4) close to the liquid injection hole (307), a metering pump (402) arranged at one end of the bellows (4) away from the clamping ring (401), and a liquid storage box (403) arranged at one end of the metering pump (402) away from the bellows (4).

8. A pre-processing device for soil heavy metal detection according to claim 1, characterized in that: The exhaust mechanism comprises a filter block (5) arranged on the inner wall of the outer shell (1), an air pump (501) embedded in the inner wall of the outer shell (1) and located at one end of the filter block (5), and an exhaust pipe (502) arranged at an end of the air pump (501) away from the filter block (5).

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