CN216117014U - Automatic pretreatment device for hexavalent chromium in soil - Google Patents

Abstract

The application relates to an automatic soil hexavalent chromium pretreatment device, relates to the technical field of soil hexavalent chromium pretreatment equipment, and comprises a shell and a magnetic stirring assembly. And a heating assembly is arranged on the magnetic stirring assembly, and a sample bottle is arranged on the heating assembly. Still be provided with fixed subassembly in the casing, fixed subassembly and sample bottle support tightly, are provided with driving motor outside the casing. A sand core funnel is arranged in the shell, a suction filtration component is arranged outside the shell, and the suction filtration component is communicated with the sand core funnel. The detection liquid in the sample bottle is heated through the heating assembly, and the magnetic stirring assembly is used for stirring the detection liquid; after heating is completed, starting a driving motor to invert the shell, and enabling the detection liquid to flow into the sand core funnel from the sample bottle; and starting the suction filtration assembly, and pumping the detection liquid into the suction filtration assembly to finish the pretreatment operation. The intelligent degree of the whole equipment is greatly improved, and the working efficiency of workers is improved.

Description

Automatic pretreatment device for hexavalent chromium in soil

Technical Field

The application relates to the field of soil hexavalent chromium pretreatment equipment, in particular to an automatic soil hexavalent chromium pretreatment device.

Background

Chromium is an important environmental pollutant, and all chromium compounds in industrial production are toxic, and hexavalent chromium is the most toxic. Trivalent chromium and hexavalent chromium in the environment can be interconverted, and when an oxidant exists in the soil, the trivalent chromium can be oxidized into hexavalent chromium.

In an alkaline environment, hexavalent chromium mainly exists in a chromate form, is easy to migrate and diffuse in soil, and is a main reason of multiple events that hexavalent chromium pollutes underground water in the north of China. A standard method for detecting soil hexavalent chromium exists in China, but a systematic soil hexavalent chromium pretreatment device does not exist at present.

The method comprises the steps of utilizing a magnetic stirring heating device and a vacuum filtration device to realize the pretreatment of soil hexavalent chromium, manually weighing a soil sample by a tester in the operation process, adding an alkaline extracting solution, heating, stirring at a constant temperature for one hour, and then manually filtering the sample to a constant volume.

Aiming at the related technologies, the inventor thinks that in the process of carrying out the pre-treatment of the soil hexavalent chromium, the whole process of detection personnel is required to be operated on an experimental site, the time consumption is long, the working efficiency is low, and the overall intelligent degree of the equipment is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the holistic intelligent degree of improve equipment, improve staff's work efficiency, this application provides a automatic pretreatment device of soil hexavalent chromium.

The application provides an automatic preprocessing device of soil hexavalent chromium adopts following technical scheme:

an automatic soil hexavalent chromium pretreatment device comprises a shell and a magnetic stirring assembly arranged on the bottom wall of the shell, wherein a heating assembly is arranged on the magnetic stirring assembly, and a sample bottle is arranged on the heating assembly; the fixing component is arranged in the shell and used for fixing the sample bottle, the fixing component is tightly abutted against the sample bottle, and a bottle opening of the sample bottle penetrates through the fixing component to extend to one side of the fixing component, which is far away from the heating component; a driving motor for driving the fixing component and the shell to synchronously rotate is arranged outside the shell, and an output shaft of the driving motor penetrates through the side wall of the shell to be fixedly connected with the fixing component; a sand core funnel is arranged on one side, away from the heating assembly, of the fixing assembly and fixedly connected in the shell, the sand core funnel comprises a funnel body and a pipe body, a bottle opening of the sample bottle is located in the funnel body, and the pipe body penetrates through the top wall of the shell and extends out of the shell; a suction filtration assembly is arranged outside the shell and communicated with the pipe body.

By adopting the technical scheme, when pretreatment operation is required, soil to be detected is poured into the sample bottle, the detection liquid is poured into the sample bottle, then the sample bottle is placed on the heating assembly, and the sample bottle is fixed through the fixing assembly. Starting a heating component and a magnetic stirring component, and heating and stirring the liquid to be measured; after heating is finished, the heating assembly and the magnetic stirring assembly are closed; starting a driving motor, driving the shell to turn over for 180 degrees by the driving motor, so that the sample bottle is inverted, and the detection liquid and the soil in the sample bottle fall into the hopper body; and at the moment, the suction filtration assembly is started again, the suction filtration assembly pumps the detection liquid into the suction filtration assembly, and the soil is left in the bucket body to finish the pretreatment operation. The intelligent degree of the whole equipment is greatly improved, and the working efficiency of workers is improved.

Optionally, the fixed assembly includes a fixed plate fixedly connected in the housing, an output shaft of the driving motor passes through a side wall of the housing and is fixedly connected with the fixed plate, and a moving plate is arranged on one side of the fixed plate, which is far away from the side connected with the housing; the two ends of the moving plate are both connected with a rotating rod in a sliding mode along the width direction of the moving plate, one end of the rotating rod penetrates through the moving plate to be connected with the fixed plate in a threaded mode, and the other end of the rotating rod is provided with an adjusting knob; the joint of the fixed plate and the movable plate is provided with clamping holes for clamping sample bottles, and the sample bottles are clamped in the clamping holes.

Through adopting above-mentioned technical scheme, when needs are fixed the sample bottle on heating element, two adjust knob that simultaneously the rotation is located on the movable plate, adjust knob drives the dwang and rotates, and the dwang moves towards the direction of keeping away from the movable plate, and the movable plate moves this moment again, puts into the joint downthehole with the sample bottle, and rotatory adjust knob once more for the dwang moves towards the direction that is close to the movable plate, and when the movable plate supported tightly with the fixed plate, the sample bottle joint was downthehole at the joint. The fixing assembly is simple to operate, easy to install and low in cost.

Optionally, the magnetic stirring assembly includes a magnetic stirrer disposed on the bottom wall of the housing and a rotor disposed in the sample vial.

Through adopting above-mentioned technical scheme, when the detection liquid in the sample bottle needs to be stirred, start magnetic stirrers, the rotor rotation in the magnetic stirrers drive sample bottle to stir detection liquid. The magnetic stirrer and the rotor are arranged, so that the operation is simple and the installation is easy.

Optionally, the heating assembly comprises a heating resistance wire and a heat insulation layer, a placing groove for placing the heating resistance wire is formed in the heat insulation layer, and the heating resistance wire is arranged in the placing groove.

By adopting the technical scheme, when the detection liquid in the sample bottle needs to be heated, the heating resistance wire is firstly electrified, and the heating resistance wire heats the detection liquid. The heating resistance wire sets up in placing the in-layer for the heating resistance wire is at the in-process of heating, and the heat preservation can reduce thermal scattering and disappearing, thereby improves the heating effect of heating resistance wire.

Optionally, a heat conducting plate is arranged on one side, close to the heating resistance wire, of the heat insulating layer.

Through adopting above-mentioned technical scheme, the heat-conducting plate keeps apart sample bottle and heating resistor silk, and the heat passes through the heat-conducting plate and transmits for the sample bottle be heated more evenly, reduced the sample bottle and appeared local overheated possibility.

Optionally, a corrosion-resistant layer is disposed on the heat-conducting plate.

In the process of placing the sample bottle into the shell, the situation of collision is inevitable, and the detection liquid in the sample bottle is easy to be sprinkled on the heat conduction plate. By adopting the technical scheme, the corrosion-resistant layer can reduce the possibility that the detection liquid corrodes the heat-conducting plate.

Optionally, a heat insulation layer is arranged on one side, away from the heating resistance wires, of the heat insulation layer.

Through adopting above-mentioned technical scheme, the insulating layer is further isolated heat and external, has improved heating element's heating effect.

Optionally, a temperature probe is arranged on one side of the funnel body close to the sample bottle, and the temperature probe extends into the sample bottle away from one end connected with the funnel body.

By adopting the technical scheme, the temperature probe can detect the temperature of the detection liquid in the sample bottle in real time, and is convenient for timely adjustment.

Optionally, a clamp is arranged between the bucket body and the pipe body and connected through the clamp.

Through adopting above-mentioned technical scheme, the bucket body is connected with dismantling between the body, is convenient for dismantle convenient the washing to bucket body and body.

Optionally, a sliding plug is sleeved on the temperature probe, the diameter of one end, close to the sample bottle, of the sliding plug is smaller than that of the opening of the sample bottle, and the diameter of one end, far away from the sample bottle, of the sliding plug is larger than that of the opening of the sample bottle.

By adopting the technical scheme, when the shell is placed right, the sliding plug blocks the bottle opening of the sample bottle due to the action of gravity, so that the heat preservation effect is realized on the sample bottle; when the heating is finished and the shell is inverted, the sliding plug slides to one side close to the bucket body under the action of gravity, and at the moment, the sliding plug plays a role in draining the detection liquid, so that the possibility that the detection liquid splashes everywhere is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. according to the intelligent sand core filtering device, the intelligent degree of the whole device is greatly improved through the matching of the heating assembly, the magnetic stirring assembly, the driving motor, the sand core funnel and the filtering assembly, so that the working efficiency of workers is improved;

2. in the further arrangement of the application, the bucket body and the pipe body are detachably connected through the arrangement of the clamp, so that the bucket body and the pipe body can be conveniently cleaned;

3. in this application further sets up in, through the setting of sliding plug, when the casing is just putting, the bottleneck of sample bottle is stopped up because of the action of gravity to the sliding plug, plays the heat preservation effect to the sample bottle, and when the casing was invertd, the sliding plug slided to one side that is close to the bucket body because of the action of gravity, played the drainage effect to the detection liquid in the sample bottle.

Drawings

FIG. 1 is a schematic structural view of a pretreatment apparatus in an embodiment of the present application;

FIG. 2 is a sectional view of a pretreatment device in an embodiment of the present application;

FIG. 3 is a schematic diagram of an exploded view of a heating assembly in an embodiment of the present application;

fig. 4 is an exploded view of the securing assembly in an embodiment of the present application.

Description of reference numerals: 1. a housing; 2. a magnetic stirring assembly; 21. a magnetic stirrer; 22. a rotor; 3. a heating assembly; 31. a heat-insulating layer; 32. heating resistance wires; 33. a heat conducting plate; 34. a corrosion-resistant layer; 35. a thermal insulation layer; 4. a sample bottle; 5. a fixing assembly; 51. a fixing plate; 52. moving the plate; 53. rotating the rod; 54. adjusting a knob; 6. a sand core funnel; 61. a bucket body; 62. a pipe body; 7. a clamp; 71. a first clamping portion; 72. a second clamping portion; 73. a force application part; 8. a suction filtration component; 81. a communicating pipe; 82. a sealing plug; 83. a suction flask; 84. a vacuum tube; 85. a vacuum pump; 86. mounting a plate; 87. a limiting ring; 88. turning; 91. a drive motor; 92. a temperature probe; 93. a sliding plug; 101. a placement groove; 102. a clamping hole.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses automatic pretreatment device of soil hexavalent chromium. Referring to fig. 1, the pretreatment apparatus includes a housing 1 having an opening at one side, and a magnetic stirring assembly 2 is mounted on a bottom wall of the housing 1. The magnetic stirring component 2 is provided with a heating component 3, and the heating component 3 is provided with a sample bottle 4.

Referring to fig. 1 and 2, magnetic stirrer assembly 2 includes a magnetic stirrer 21 fixedly mounted on the bottom wall of housing 1 and a rotor 22 disposed within vial 4.

Referring to fig. 1 and 3, the heating assembly 3 includes an insulating layer 31, the insulating layer 31 is circular, and the insulating layer 31 covers the sample bottle 4. A placing groove 101 is arranged on the inner side wall of the heat preservation layer 31 in a winding way, and a heating resistance wire 32 is fixedly arranged in the placing groove 101. The material of heat preservation 31 in the embodiment of this application adopts the asbestos.

Referring to fig. 1 and 3, a heat-conducting plate 33 is fixedly mounted on the inner side wall of the insulating layer 31 by bolts, and a corrosion-resistant layer 34 is coated on the side wall of the heat-conducting plate 33 close to the sample bottle 4. The outer side wall of the heat insulation layer 31 is adhered with a heat insulation layer 35, and the heat insulation layer 35 is fixedly connected to the magnetic stirrer 21. In the embodiment of the present application, the heat conducting plate 33 is made of aluminum alloy, the corrosion-resistant layer 34 is made of teflon, and the heat-insulating layer 35 is made of refractory brick. In the process of placing the sample bottle 4 into the heat-insulating layer 31, the situation of collision is inevitable, and the detection liquid in the sample bottle 4 is easy to be sprinkled on the heat-conducting plate 33 to corrode the heat-conducting plate 33. The corrosion-resistant layer 34 isolates the detection liquid from the heat-conducting plate 33, extending the service life of the heat-conducting plate 33.

Referring to fig. 1 and 4, a fixing member 5 is provided in the housing 1, and the sample bottle 4 is fixed in the insulating layer 31 by the fixing member 5. The fixed assembly 5 comprises a fixed plate 51 horizontally and fixedly connected to the inner side wall of the housing 1, and a moving plate 52 is arranged on the side of the fixed plate 51 far away from the side connected with the housing 1, and the moving plate 52 and the fixed plate 51 are on the same horizontal plane.

Referring to fig. 1 and 4, both ends of the moving plate 52 in the length direction are slidably connected with rotating rods 53, one end of each rotating rod 53 penetrates through the moving plate 52 to be in threaded connection with the fixed plate 51, and the other end of each rotating rod 53 is fixedly connected with an adjusting knob 54. The joint of the fixed plate 51 and the moving plate 52 is provided with a clamping hole 102, and the sample bottle 4 is clamped and matched in the clamping hole 102. The mouth of the sample bottle 4 extends to the side of the fixing plate 51 far away from the insulating layer 31 through the clamping hole 102.

Referring to fig. 1 and 4, when needing to joint sample bottle 4 in joint hole 102, two adjust knob 54 of rotation simultaneously, adjust knob 54 drives dwang 53 and slides towards the direction of keeping away from fixed plate 51, movable plate 52 can slide this moment, make the size grow of joint hole 102, thereby put into joint hole 102 with sample bottle 4, reverse rotation adjust knob 54 again, make dwang 53 slide towards the direction that is close to fixed plate 51, movable plate 52 slides towards the direction that is close to fixed plate 51, thereby joint sample bottle 4 in joint hole 102.

Referring to fig. 1, mounting plates 86 are vertically and fixedly connected to both sides of the housing 1, and a driving motor 91 for driving the fixing plate 51 and the housing 1 to synchronously rotate is fixedly mounted on a side wall of one of the mounting plates 86 away from the housing 1 through bolts. The output shaft of the driving motor 91 passes through the mounting plate 86 and the side wall of the housing 1 in sequence to be fixedly connected with the fixing plate 51.

Referring to fig. 1, a sand core funnel 6 is fixedly connected in the housing 1, and the sand core funnel 6 is located on one side of the fixing plate 51 far away from the heat insulation layer 31. The sand core funnel 6 comprises a bucket body 61 and a pipe body 62, and the bucket body 61 and the pipe body 62 are connected through a clamp 7. The bucket body 61 is reversely buckled on the fixed plate 51 and the movable plate 52, one end of the tube body 62 is connected with the bucket body 61 through the clamp 7, and the other end of the tube body 62 passes through the top wall of the shell 1 and extends out of the shell 1.

Referring to fig. 1, the clamp 7 includes a first clamping portion 71 for clamping the body 61 and a second clamping portion 72 for clamping the pipe body 62. A rotating shaft penetrates through the first clamping portion 71 and the second clamping portion 72 and is hinged to each other through the rotating shaft, and a torsion spring is fixedly connected to the rotating shaft. The torsion arm at one end of the torsion spring is fixedly connected to the first clamping portion 71, and the torsion arm at the other end is fixedly connected to the second clamping portion 72. The first clamping portion 71 and the second clamping portion 72 are fixedly connected with a force application portion 73 at one end close to the rotating shaft.

Referring to fig. 1 and 2, a temperature probe 92 is fixedly connected to a side wall of the bucket body 61 on a side close to the fixed plate 51, and the temperature probe 92 is located at the center of the side wall. The end of the temperature probe 92 far away from the end connected with the bucket body 61 passes through the mouth of the sample bottle 4 and extends into the sample bottle 4, and the end of the temperature probe 92 positioned in the sample bottle 4 is vertically and fixedly connected with a corner 88. When the detection liquid in the sample bottle 4 is agitated, the center of the detection liquid swirls. The arrangement of the corner 88 ensures that the temperature probe 92 is in contact with the detection liquid, and the condition that the temperature measurement is inaccurate due to the fact that the temperature probe 92 cannot be in contact with the detection liquid is avoided.

Referring to fig. 2, a sliding plug 93 is slidably connected to the temperature probe 92, a diameter of one end of the sliding plug 93 close to the sample bottle 4 is smaller than a diameter of a mouth of the sample bottle 4, and a diameter of one end of the sliding plug 93 far away from the sample bottle 4 is larger than the diameter of the mouth of the sample bottle 4. One end of the temperature probe 92 close to the bucket body 61 is fixedly connected with a limit ring 87. When the shell 1 is inverted, the sliding plug 93 is blocked by the limiting ring 87, so that the sliding plug 93 is prevented from blocking the filtering hole on the bucket body 61 and influencing the filtering effect of the bucket body 61.

Referring to fig. 2, when the housing 1 is placed right, the sliding plug 93 plugs the mouth of the sample bottle 4 under the action of gravity, so as to achieve a heat preservation effect on the detection liquid in the sample bottle 4, and improve the heating effect of the heating assembly 3; when the shell 1 is inverted, the sliding plug 93 slides to the position of the limiting ring 87 under the action of gravity, the detection liquid in the sample bottle 4 flows into the bucket body 61 along the sliding plug 93, and the sliding plug 93 plays a role in drainage.

Referring to fig. 1, a suction filtration assembly 8 is disposed outside the casing 1, and the suction filtration assembly 8 includes a suction filtration bottle 83, a communication pipe 81, a vacuum pipe 84, and a vacuum pump 85. The vacuum flask 83 and the vacuum pump 85 are both arranged outside the shell 1, one end of the vacuum tube 84 is communicated with the suction nozzle of the vacuum flask 83, and the other end of the vacuum tube 84 is communicated with the vacuum pump 85. The mouth of the filtering bottle 83 is fixedly connected with a sealing plug 82, one end of a communicating pipe 81 passes through the sealing plug 82 and extends into the filtering bottle 83, and the other end of the communicating pipe 81 is communicated with the pipe body 62.

The implementation principle of the automatic soil hexavalent chromium pretreatment device in the embodiment of the application is as follows: when the pretreatment operation is needed, firstly, soil to be detected is poured into a sample bottle 4 provided with a rotor 22, detection liquid is poured into the sample bottle 4, the sample bottle 4 is placed in a heat insulation layer 31, the shell 1 is closed, the magnetic stirrer 21 is started to stir the detection liquid, the heating resistance wire 32 is electrified, and the detection liquid is heated. After the heating is finished, the magnetic stirrer 21 is turned off, and the heating resistance wire 32 is powered off; then the driving motor 91 is started, the driving motor 91 drives the shell 1 to rotate 180 degrees, so that the sample bottle 4 is inverted, the soil to be detected in the sample bottle 4 falls into the bucket body 61, and the detection liquid flows into the bucket body 61 along the sliding plug 93; and starting the vacuum pump 85 again, wherein the vacuum pump 85 pumps the gas in the filter flask 83 away, and negative pressure is formed in the filter flask 83, so that the detection liquid in the bucket body 61 is sucked into the filter flask 83, and after the suction filtration is finished, the pretreatment operation is finished.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (10)

1. The utility model provides an automatic pretreatment device of soil hexavalent chromium which characterized in that: the device comprises a shell (1) and a magnetic stirring assembly (2) arranged on the bottom wall of the shell (1), wherein a heating assembly (3) is arranged on the magnetic stirring assembly (2), and a sample bottle (4) is arranged on the heating assembly (3); a fixing component (5) used for fixing the sample bottle (4) is further arranged in the shell (1), the fixing component (5) is tightly abutted against the sample bottle (4), and a bottle opening of the sample bottle (4) penetrates through the fixing component (5) to extend to one side, away from the heating component (3), of the fixing component (5); a driving motor (91) for driving the fixing component (5) and the shell (1) to synchronously rotate is arranged outside the shell (1), and an output shaft of the driving motor (91) penetrates through the side wall of the shell (1) and is fixedly connected with the fixing component (5); a sand core funnel (6) is arranged on one side, away from the heating assembly (3), of the fixing assembly (5), the sand core funnel (6) is fixedly connected into the shell (1), the sand core funnel (6) comprises a hopper body (61) and a pipe body (62), a bottle opening of the sample bottle (4) is located in the hopper body (61), and the pipe body (62) penetrates through the top wall of the shell (1) and extends out of the shell (1); a suction filtration assembly (8) is arranged outside the shell (1), and the suction filtration assembly (8) is communicated with the pipe body (62).

2. The automatic pretreatment device of hexavalent chromium in soil according to claim 1, wherein: the fixing assembly (5) comprises a fixing plate (51) fixedly connected in the shell (1), an output shaft of the driving motor (91) penetrates through the side wall of the shell (1) to be fixedly connected with the fixing plate (51), and a moving plate (52) is arranged on one side, far away from the side connected with the shell (1), of the fixing plate (51); both ends of the moving plate (52) are connected with rotating rods (53) in a sliding mode along the width direction of the moving plate (52), one end of each rotating rod (53) penetrates through the moving plate (52) to be connected with the fixed plate (51) in a threaded mode, and the other end of each rotating rod (53) is provided with an adjusting knob (54); the joint of the fixed plate (51) and the movable plate (52) is provided with a clamping hole (102) for clamping the sample bottle (4), and the sample bottle (4) is clamped in the clamping hole (102).

3. The automatic pretreatment device of hexavalent chromium in soil according to claim 1, wherein: the magnetic stirring assembly (2) comprises a magnetic stirrer (21) arranged on the bottom wall of the shell (1) and a rotor (22) arranged in the sample bottle (4).

4. The automatic pretreatment device of hexavalent chromium in soil according to claim 1, wherein: the heating assembly (3) comprises a heating resistance wire (32) and a heat preservation layer (31), a placing groove (101) for placing the heating resistance wire (32) is formed in the heat preservation layer (31), and the heating resistance wire (32) is arranged in the placing groove (101).

5. The automatic pretreatment device of hexavalent chromium in soil according to claim 4, wherein: and a heat-conducting plate (33) is arranged on one side of the heat-insulating layer (31) close to the heating resistance wires (32).

6. The automatic pretreatment device of hexavalent chromium in soil according to claim 5, wherein: the heat-conducting plate (33) is provided with a corrosion-resistant layer (34).

7. The automatic pretreatment device of hexavalent chromium in soil according to claim 4, wherein: and a heat insulation layer (35) is arranged on one side of the heat insulation layer (31) far away from the heating resistance wire (32).

8. The automatic pretreatment device of hexavalent chromium in soil according to claim 1, wherein: one side of the bucket body (61) close to the sample bottle (4) is provided with a temperature probe (92), and one end, far away from the end connected with the bucket body (61), of the temperature probe (92) extends into the sample bottle (4).

9. The automatic pretreatment device of hexavalent chromium in soil according to claim 1, wherein: and a clamp (7) is arranged between the bucket body (61) and the pipe body (62) and is connected through the clamp (7).

10. The automatic pretreatment device of hexavalent chromium in soil according to claim 8, wherein: the temperature probe (92) is sleeved with a sliding plug (93), the diameter of one end, close to the sample bottle (4), of the sliding plug (93) is smaller than that of the opening of the sample bottle (4), and the diameter of one end, far away from the sample bottle (4), of the sliding plug (93) is larger than that of the opening of the sample bottle (4).

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