Pretreatment device for detecting hexavalent chromium in soil

Abstract

The utility model discloses a detection pretreatment device for hexavalent chromium in soil, which comprises a receiving box, universal wheels are rotatably mounted at four corners of the bottom of the receiving box, a first connecting pipe is fixedly mounted at the top of the receiving box, and a stirring box is fixedly mounted at the top of the first connecting pipe. Two third rotating shafts are rotatably mounted in the stirring box, a mounting frame is fixedly mounted on one side of the stirring box, a second connecting pipe is fixedly mounted at the top of the stirring box, a screening box is fixedly mounted at the top of the second connecting pipe, a third connecting pipe is fixedly mounted at the top of the screening box, and two filter screens are fixedly mounted in the screening box. The pretreatment device for detecting the hexavalent chromium in the soil is simple in structure and convenient to use, can be used for quickly crushing, screening, stirring and mixing the soil during detection, and is convenient for improving the overall detection efficiency in the later period.

Description

Technical Field

[0001] The utility model relates to the technical field of soil detection, in particular to a hexavalent chromium detection pretreatment device in soil. Background Art

[0002] Inorganic pollutants refer to pollutants composed of inorganic substances, such as various toxic metals and their oxides, acids, alkalis, salts, sulfides and halides. Among them, heavy metals such as lead, cadmium, mercury and copper will accumulate in sediments or soil, endangering humans and organisms through the food chain.

[0003] Soil environmental monitoring refers to determining the environmental quality (or degree of pollution) and its changing trend by measuring the representative values ​​of factors affecting soil environmental quality. In order to obtain soil quality, it is necessary to detect the content of various pollutants in the soil. Among them, the heavy metal content in the soil is an important indicator for soil quality detection.

[0004] The patent with application number CN202221554720.9 discloses a detection device for hexavalent chromium in soil, including a detection body, a support leg is arranged on one side of the detection body, and a processing box is arranged on the upper end of the detection body, a liquid storage box is arranged on the upper end of the processing box, a fixing block is arranged on the inner surface wall of the detection body, a liquid inlet is arranged on the upper end of the liquid storage box, a connecting pipe is arranged at the bottom of the processing box, a detection structure is arranged on one side of the connecting pipe, and a stabilizing block is arranged inside the support leg; the detection device for hexavalent chromium in soil is provided with support legs, stabilizing blocks, telescopic rods, and inclined rods. Stabilizing springs, when using the detection device, the support legs are fixed on both sides of the detection body, and the stabilizing blocks drive the inclined rods on the telescopic rods to squeeze the stabilizing springs, which has a good stabilizing effect, avoids damage to the internal components of the device, and increases the service life of the detection device.

[0005] However, after research, it was found that the above patent still has the following problems:

[0006] The soil was not crushed before stirring, resulting in poor mixing effect between the soil and the extract, which was not convenient for subsequent filtration and affected the overall detection efficiency in the later stage.

[0007] Based on this, this scheme proposes a pretreatment device for detecting hexavalent chromium in soil. Utility Model Content

[0008] The utility model aims to provide a pretreatment device for detecting hexavalent chromium in soil to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above purpose, the utility model provides the following technical solutions: a pretreatment device for detecting hexavalent chromium in soil, comprising a receiving box,

[0010] The four corners of the bottom of the receiving box are all rotatably mounted with universal wheels, and a first connecting pipe is fixedly mounted on the top of the receiving box, a mixing box is fixedly mounted on the top of the first connecting pipe, two third rotating shafts are rotatably mounted in the mixing box, and a mounting frame is fixedly mounted on one side of the mixing box, a second connecting pipe is fixedly mounted on the top of the mixing box, a screening box is fixedly mounted on the top of the second connecting pipe, a third connecting pipe is fixedly mounted on the top of the screening box, and two filter screens are fixedly mounted in the screening box, a crushing box is fixedly mounted on the top of the third connecting pipe, two first rotating shafts are rotatably mounted in the crushing box, and a first motor is fixedly mounted on one side of the crushing box, and a discharge pipe is fixedly mounted on one side of the receiving box;

[0011] A plurality of crushing rods are fixedly installed at equal distances on both sides of the two first rotating shafts, and one end of the two first rotating shafts is fixedly sleeved with a linkage gear, the two linkage gears are meshed with each other, a first sprocket is fixedly sleeved on the output shaft of the first motor, and the output shaft of the first motor is fixedly connected to the corresponding linkage gear, and a feeding pipe is fixedly installed on one side of the mixing box;

[0012] Multiple stirring shafts are fixedly installed on both sides of the two third rotating shafts and one end of the two third rotating shafts is fixedly sleeved with a reciprocating gear. A second motor is fixedly installed on the mounting frame, and a reciprocating screw is fixedly sleeved on the output shaft of the second motor. A reciprocating rack that meshes with the two reciprocating gears is threadedly sleeved on the reciprocating screw.

[0013] Preferably, four metal rods located between the two filter screens are fixedly installed in the screening box and a second rotating shaft is rotatably installed in the screening box, two striking disks are fixedly sleeved on the second rotating shaft, a through hole is opened on any metal rod, a striking rod is movably installed in any through hole, a return spring is sleeved on any striking rod, one end of any return spring is fixed on the corresponding striking rod, and the other end of any return spring is fixed on the inner wall of the corresponding through hole, a second sprocket is fixedly sleeved on one end of the second rotating shaft, and the same chain is sleeved between the second sprocket and the first sprocket.

[0014] By adopting the above technical solution, the first sprocket drives the rotation of the first sprocket through the chain, which can drive the rotation of the second rotating shaft and the two striking disks. The two striking disks hit the corresponding two striking rods back and forth, which can drive the four striking rods to move back and forth up and down. The striking rods repeatedly hit the corresponding filter nets, so that the two filter nets will not be blocked.

[0015] Preferably, the discharge pipe, the first connecting pipe, the second connecting pipe, the third connecting pipe and the feeding pipe are all provided with valves.

[0016] Preferably, a control panel electrically connected to the first motor and the second motor is fixedly mounted on one side of the receiving box.

[0017] By adopting the above technical solution, the first motor and the second motor can be easily controlled through the control panel.

[0018] Preferably, a slide rail is fixedly installed on one side of the mixing box close to the reciprocating rack, and a slider fixedly connected to the reciprocating rack is slidably installed on the slide rail.

[0019] By adopting the above technical solution, the self-rotation of the reciprocating rack is restricted by the slide rail and the slider.

[0020] Preferably, the second rotating shaft is located at an eccentric position of the two striking discs.

[0021] By adopting the above technical solution and the above arrangement, the two striking plates can act as cams.

[0022] Preferably, a push rod is fixedly mounted on one side of the receiving box.

[0023] By adopting the above technical solution, the whole device can be easily pushed to move by matching the push rod with the universal wheel.

[0024] Compared with the prior art, the beneficial effects of the utility model are as follows: first, the soil raw material is added into the crushing box, and then the first motor is started to drive the rotation of the linkage gear and the first sprocket, and the linkage gear drives the rotation of another linkage gear, which can drive the rotation of the two first rotating shafts, and can drive the rotation of multiple crushing rods, so that the soil raw material can be quickly crushed. After the crushing is completed, the valve of the third connecting pipe is opened to allow the crushed soil to enter the screening box. The two filter screens in the screening box can filter and screen some impurities such as plastic bags in the soil. During this period, the first sprocket drives the rotation of the first sprocket through the chain, which can drive the rotation of the second rotating shaft and the two striking discs. The two striking discs strike the corresponding two striking rods back and forth, which can drive the four striking rods to move back and forth up and down. The striking rod repeatedly strikes the corresponding filter screens so that the two filter screens will not be blocked, and then the valve on the second connecting pipe is opened to allow the crushed, filtered and screened soil to enter the mixing box. During this period, the hexavalent chromium extract is added to the mixing box through the feeding pipe, and then the second motor is started to drive the rotation of the reciprocating screw, the reciprocating screw drives the reciprocating rack to move back and forth, and the reciprocating rack drives the two reciprocating gears to rotate back and forth, which can drive the back and forth rotation of the two third rotating shafts, which can drive the back and forth rotation of multiple stirring shafts, and the soil and the hexavalent chromium extract can be uniformly and fully reciprocated and stirred. Then, the valve on the first connecting pipe is opened to introduce the mixture into the receiving box, and finally, the mixture can be exported by opening the valve on the discharge pipe, which is convenient for subsequent detection. The utility model has a simple structure and is easy to use. The hexavalent chromium detection pretreatment device in soil can quickly crush, screen, and stir the soil between detections, which is convenient for increasing the overall detection efficiency in the later stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of the external structure of the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of Part A of the utility model;

[0027] Figure 3 It is a three-dimensional diagram of the internal structure of the utility model;

[0028] Figure 4 This is a schematic structural diagram of part B of the utility model.

[0029] In the figure: 1. receiving box; 2. push rod; 3. universal wheel; 4. stirring box; 5. second connecting pipe; 6. screening box; 7. first rotating shaft; 8. crushing box; 9. crushing rod; 10. first motor; 11. second sprocket; 12. reciprocating screw rod; 13. second motor; 14. mounting frame; 15. reciprocating gear; 16. first sprocket; 17. linkage gear; 18. chain; 19. third rotating shaft; 20. stirring shaft; 21. third connecting pipe; 22. first connecting pipe; 23. discharging pipe; 24. control panel; 25. filter screen; 26. metal rod; 27. striking rod; 28. second rotating shaft; 29. ​​striking disk; 30. reset spring; 31. feeding pipe; 32. reciprocating rack. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1-4The utility model provides a technical solution: a hexavalent chromium detection pretreatment device in soil, comprising a receiving box 1, universal wheels 3 are rotatably installed at the four corners of the bottom of the receiving box 1, a first connecting pipe 22 is fixedly installed on the top of the receiving box 1, a mixing box 4 is fixedly installed on the top of the first connecting pipe 22, two third rotating shafts 19 are rotatably installed in the mixing box 4, and a mounting frame 14 is fixedly installed on one side of the mixing box 4, a second connecting pipe 5 is fixedly installed on the top of the mixing box 4, a screening box 6 is fixedly installed on the top of the second connecting pipe 5, a third connecting pipe 21 is fixedly installed on the top of the screening box 6, and two filter screens 25 are fixedly installed in the screening box 6, a crushing box 8 is fixedly installed on the top of the third connecting pipe 21, and two first rotating shafts 7 are rotatably installed in the crushing box 8 A first motor 10 is fixedly installed on one side of the crushing box 8, a discharge pipe 23 is fixedly installed on one side of the receiving box 1, a plurality of crushing rods 9 are fixedly installed at equal distances on both sides of the two first rotating shafts 7, and one end of the two first rotating shafts 7 is fixedly sleeved with a linkage gear 17, and the two linkage gears 17 are meshed with each other, a first sprocket 16 is fixedly sleeved on the output shaft of the first motor 10, and the output shaft of the first motor 10 is fixedly connected to the corresponding linkage gear 17, a feeding pipe 31 is fixedly installed on one side of the mixing box 4, a plurality of stirring shafts 20 are fixedly installed on both sides of the two third rotating shafts 19, and one end of the two third rotating shafts 19 is fixedly sleeved with a reciprocating gear 15, a second motor 13 is fixedly installed on the mounting frame 14, and a first sprocket 16 is fixedly sleeved on the output shaft of the second motor 13 A reciprocating screw rod 12 is sleeved, and a reciprocating rack 32 meshing with two reciprocating gears 15 is threadedly sleeved on the reciprocating screw rod 12. A slide rail is fixedly installed on one side of the mixing box 4 close to the reciprocating rack 32, and a slider fixedly connected to the reciprocating rack 32 is slidably installed on the slide rail. Through the above-mentioned structural arrangement, the soil raw material is first added into the crushing box 8, and then the first motor 10 is started to drive the rotation of the linkage gear 17 and the first sprocket 16. The linkage gear 17 drives the rotation of another linkage gear 17, which can drive the rotation of the two first rotating shafts 7, and can drive the rotation of multiple crushing rods 9, so that the soil raw material can be quickly crushed. After the crushing is completed, the crushed soil is allowed to enter the screening box 6 by opening the valve of the third connecting pipe 21. The two filter screens 25 in the screening box 6 can filter and screen some impurities such as plastic bags in the soil, and then open the valve on the second connecting pipe 5, so that the crushed, filtered and screened soil enters the mixing box 4, during which the hexavalent chromium extract is added into the mixing box 4 through the feeding pipe 31, and then the second motor 13 is started to drive the rotation of the reciprocating screw rod 12, the reciprocating screw rod 12 drives the reciprocating rack 32 to move back and forth, and the reciprocating rack 32 drives the two reciprocating gears 15 to rotate back and forth, which can drive the back and forth rotation of the two third rotating shafts 19, which can drive the back and forth rotation of multiple stirring shafts 20, so that the soil and the hexavalent chromium extract can be evenly and fully reciprocated and stirred, and then the valve on the first connecting pipe 22 is opened,The mixture can be introduced into the receiving box 1, and finally the mixture can be discharged by opening the valve on the discharge pipe 23, which is convenient for subsequent detection.

[0032] Combination Figure 1-4 As shown, four metal rods 26 located between two filter screens 25 are fixedly installed in the screening box 6, and a second rotating shaft 28 is rotatably installed in the screening box 6. Two striking disks 29 are fixedly sleeved on the second rotating shaft 28. A through hole is opened on any metal rod 26, and a striking rod 27 is movably installed in any through hole. A return spring 30 is sleeved on any striking rod 27. One end of any return spring 30 is fixed on the corresponding striking rod 27, and the other end of any return spring 30 is fixed on the inner wall of the corresponding through hole. One end of the second rotating shaft 28 is fixed on the inner wall of the corresponding through hole. A second sprocket 11 is fixedly sleeved, and the same chain 18 is sleeved between the second sprocket 11 and the first sprocket 16. The second rotating shaft 28 is located at the eccentric position of the two striking disks 29. Through the above-mentioned structural arrangement, the first sprocket 16 drives the rotation of the first sprocket 11 through the chain 18, which can drive the rotation of the second rotating shaft 28 and the two striking disks 29. The two striking disks 29 strike the corresponding two striking rods 27 back and forth, which can drive the four striking rods 27 to move up and down. The striking rods 27 repeatedly strike the corresponding filter screens 25, so that the two filter screens 25 will not be blocked.

[0033] Combination Figure 1-4 As shown, valves are provided on the discharge pipe 23 , the first connecting pipe 22 , the second connecting pipe 5 , the third connecting pipe 21 , and the feeding pipe 31 .

[0034] Combination Figure 1-4 As shown, a control panel 24 electrically connected to the first motor 10 and the second motor 13 is fixedly installed on one side of the receiving box 1. Through the above-mentioned structural setting, the first motor 10 and the second motor 13 can be easily operated and controlled through the control panel 24.

[0035] Combination Figure 1-4 As shown, a push rod 2 is fixedly installed on one side of the receiving box 1. Through the above-mentioned structural setting, the push rod 2 and the universal wheel 3 are matched to facilitate the movement of the entire device.

[0036] The working principle of the utility model is as follows: first, the soil raw material is added into the crushing box 8, and then the first motor 10 is started to drive the linkage gear 17 and the first sprocket 16 to rotate, and the linkage gear 17 drives the rotation of another linkage gear 17, which can drive the rotation of the two first rotating shafts 7, and can drive the rotation of multiple crushing rods 9, so that the soil raw material can be quickly crushed. After the crushing is completed, by opening the valve of the third connecting pipe 21, the crushed soil enters the screening box 6, and the two filter screens 25 in the screening box 6 can filter and screen some impurities such as plastic bags in the soil. During this period, the first sprocket 16 drives the rotation of the first sprocket 11 through the chain 18, which can drive the rotation of the second rotating shaft 28 and the two striking discs 29, and the two striking discs 29 strike the corresponding two striking rods 27 back and forth, which can drive the four striking rods 27 to move back and forth up and down. 27 repeatedly hits the corresponding filter screen 25 so that the two filter screens 25 will not be blocked, and then opens the valve on the second connecting pipe 5, so that the crushed, filtered and screened soil enters the mixing box 4. During this period, the hexavalent chromium extract is added into the mixing box 4 through the feeding pipe 31, and then the second motor 13 is started to drive the rotation of the reciprocating screw 12, and the reciprocating screw 12 drives the reciprocating rack 32 to move back and forth, and the reciprocating rack 32 drives the two reciprocating gears 15 to rotate back and forth, which can drive the two third rotating shafts 19 to rotate back and forth, and can drive the back and forth rotation of multiple stirring shafts 20, so that the soil and the hexavalent chromium extract can be evenly and fully reciprocated and stirred. Then, open the valve on the first connecting pipe 22, and the mixture can be introduced into the receiving box 1. Finally, by opening the valve on the discharge pipe 23, the mixture can be discharged, which is convenient for subsequent detection. The utility model has a simple structure and is easy to use. The hexavalent chromium detection pretreatment device in soil can quickly crush, screen, and stir and mix the soil before detection, so as to increase the overall detection efficiency in the later stage.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field. Although the embodiments of the utility model have been shown and described, it is understandable to those of ordinary skill in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A soil hexavalent chromium detection pretreatment device, comprising a receiving box (1), characterized in that: Universal wheels (3) are rotatably mounted at the four corners of the bottom of the receiving box (1), and a first connecting pipe (22) is fixedly mounted on the top of the receiving box (1); a mixing box (4) is fixedly mounted on the top of the first connecting pipe (22); two third rotating shafts (19) are rotatably mounted in the mixing box (4), and a mounting frame (14) is fixedly mounted on one side of the mixing box (4); a second connecting pipe (5) is fixedly mounted on the top of the mixing box (4); a screening box (6) is fixedly mounted on the top of the second connecting pipe (5); a third connecting pipe (21) is fixedly mounted on the top of the screening box (6), and two filter screens (25) are fixedly mounted in the screening box (6); a crushing box (8) is fixedly mounted on the top of the third connecting pipe (21); two first rotating shafts (7) are rotatably mounted in the crushing box (8), and a first motor (10) is fixedly mounted on one side of the crushing box (8); and a discharge pipe (23) is fixedly mounted on one side of the receiving box (1); A plurality of crushing rods (9) are fixedly installed at equal distances on both sides of the two first rotating shafts (7), and one end of the two first rotating shafts (7) is fixedly sleeved with a linkage gear (17), the two linkage gears (17) are meshed with each other, a first sprocket (16) is fixedly sleeved on the output shaft of the first motor (10), and the output shaft of the first motor (10) is fixedly connected to the corresponding linkage gear (17), and a feeding pipe (31) is fixedly installed on one side of the mixing box (4); A plurality of stirring shafts (20) are fixedly mounted on both sides of the two third rotating shafts (19), and one end of the two third rotating shafts (19) is fixedly sleeved with a reciprocating gear (15), a second motor (13) is fixedly mounted on the mounting frame (14), a reciprocating screw rod (12) is fixedly sleeved on the output shaft of the second motor (13), and a reciprocating rack (32) that meshes with the two reciprocating gears (15) is threadedly sleeved on the reciprocating screw rod (12).

2. A soil hexavalent chromium detection pretreatment device according to claim 1, characterized in that: Four metal rods (26) located between two filter screens (25) are fixedly installed in the screening box (6), and a second rotating shaft (28) is rotatably installed in the screening box (6). Two striking disks (29) are fixedly sleeved on the second rotating shaft (28). A through hole is opened on any metal rod (26), and a striking rod (27) is movably installed in any through hole. A return spring (30) is sleeved on any striking rod (27), one end of any return spring (30) is fixed on the corresponding striking rod (27), and the other end of any return spring (30) is fixed on the inner wall of the corresponding through hole. A second sprocket (11) is fixedly sleeved on one end of the second rotating shaft (28), and a same chain (18) is sleeved between the second sprocket (11) and the first sprocket (16).

3. A soil hexavalent chromium detection pretreatment device according to claim 1, characterized in that: The discharge pipe (23), the first connecting pipe (22), the second connecting pipe (5), the third connecting pipe (21) and the feeding pipe (31) are all provided with valves.

4. A soil hexavalent chromium detection pretreatment device according to claim 1, characterized in that: A control panel (24) electrically connected to the first motor (10) and the second motor (13) is fixedly mounted on one side of the receiving box (1).

5. A soil hexavalent chromium detection pretreatment device according to claim 1, characterized in that: A slide rail is fixedly installed on one side of the mixing box (4) close to the reciprocating rack (32), and a sliding block fixedly connected to the reciprocating rack (32) is slidably installed on the slide rail.

6. A soil hexavalent chromium detection pretreatment device according to claim 2, characterized in that: The second rotating shaft (28) is located at an eccentric position of the two striking discs (29).

7. A soil hexavalent chromium detection pretreatment device according to claim 2, characterized in that: A push rod (2) is fixedly mounted on one side of the receiving box (1).

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