Soil and chemical dosing apparatus for soil remediation equipment

Abstract

The present application relates to a kind of soil and medicine quantitative mixing device for soil remediation equipment, the soil and medicine quantitative mixing device for soil remediation equipment, including soil weighing unit, medicine quantitative unit and mixing unit, wherein, soil weighing unit is set by two weighing plates structure etc., not only can accurately and quickly weigh soil, and facilitate the quick release of soil and remediation agent after weighing, in addition, also avoid the problem that existing screw auger is quantitatively easy to be caked, and soil remediation speed is faster.Medicine quantitative unit, not only include liquid medicine quantitative unit, also include special solid medicine quantitative unit, so that whether liquid medicine or solid medicine can be more accurately quantified to be mixed with soil, and the accuracy of quantification is not affected by blockage. Mixing unit cooperates with other two units, and better treatment continuity can be achieved to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of soil remediation equipment, in particular to a soil and medicine quantitative mixing device for soil remediation equipment. BACKGROUND

[0002] Soil is the home of plants and animals and is one of the main conditions for human survival, and with the development of social economy, soil pollution caused by human factors is becoming more and more serious, among which heavy metal pollution is an important form of soil pollution.

[0003] For heavy metal contaminated soil, the main remediation technologies include excavation, stabilization and solidification, chemical washing, gas stripping, heat treatment and biological remediation. Compared with other remediation technologies, the stabilization and solidification technology has the advantages of short treatment time and wide application range. The so-called stabilization and solidification is to change the physical and chemical properties of soil by adding soil additives (solidification agent), to change the existence form of heavy metals in soil through adsorption or coprecipitation, thereby reducing its biological availability and migration.

[0004] And for the soil remediation equipment of the stabilization and solidification technology, the development trend is as follows: from fixed equipment to mobile remediation equipment; from in-situ remediation technology to ex-situ remediation technology. At present, the mobile ex-situ remediation equipment mostly realizes quantitative soil through auger and quantitative medicine through flow control when remediating soil. The former is difficult to accurately quantify, and there are problems such as soil easy to be caked, affecting mixing effect or leading to long mixing time; the latter has problems such as difficult to be applied to solid medicine or solid medicine easy to be blocked, and the remediation agent often needs not only one kind, and involves liquid-solid two kinds, so accurate quantification of remediation agent also has certain difficulty. In addition, soil and remediation agent are mostly mixed by using stirring tank, which has the problem of poor continuity. SUMMARY

[0005] In order to make up for the shortcomings of the prior art, the present application provides a soil and medicine quantitative mixing device for soil remediation equipment, which can accurately quantify soil and medicine mixing, and has certain treatment continuity, so as to at least solve or alleviate one problem in the prior art.

[0006] The technical scheme adopted by the present application to solve the above technical problems is:

[0007] A soil and medicine quantitative mixing device for soil remediation equipment, comprising:

[0008] The soil weighing unit comprises a weighing box, a feeding port is arranged on the top of the weighing box, a weighing mechanism is arranged in the weighing box, the weighing mechanism comprises two weighing plates connected by a hinge shaft and a first driving element for driving the lifting of the hinge shaft, a limiting component is arranged between the weighing plate and the weighing box, the two weighing plates can be used for carrying soil and weighing when being unfolded under the action of the limiting component, and the two weighing plates will be gradually folded at an angle to discharge the soil when the hinge shaft is lifted by the first driving element.

[0009] The medicine quantifying unit comprises a liquid medicine quantifying unit and a solid medicine quantifying unit, a medicine feeding port is arranged on the side of the weighing box below the weighing plate, the solid medicine quantifying unit comprises a solid medicine box, a horizontal partition plate is arranged in the solid medicine box, a plurality of first vertical partition plates are fixedly connected to the solid medicine box above the horizontal partition plate to enclose a plurality of circumferentially distributed medicine storage spaces, a medicine outlet is arranged on the horizontal partition plate corresponding to one of the medicine storage spaces, an iris mechanism is arranged in the medicine outlet, a quantifying cylinder corresponding to the medicine outlet is connected to the bottom of the horizontal partition plate, a plurality of second vertical partition plates are arranged in the quantifying cylinder to enclose a plurality of circumferentially distributed quantifying cavities, an upper baffle capable of shielding one of the quantifying cavities is arranged on the top of the quantifying cylinder, a lower baffle capable of shielding the remaining quantifying cavities is arranged on the bottom of the quantifying cylinder, at least one of the lower baffles can be driven to rotate by a second driving element, the horizontal partition plate is driven to rotate by a third driving element to switch the medicine source, a conical temporary medicine storage space is formed in the lower part of the solid medicine box below the horizontal partition plate, and the bottom of the temporary medicine storage space is connected to the medicine feeding port through an inclined pipe.

[0010] The mixing unit comprises a first tumbling roller arranged below the medicine feeding port to preliminarily mix the entered medicine and soil.

[0011] Further, the weighing box forms a temporary storage space below the first tumbling roller, the mixing unit further comprises a screw conveyor connected to the temporary storage space, the screw conveyor is driven by a forward and reverse servo motor to realize the mixing and conveying functions. An outlet box is arranged at the outlet of the screw conveyor, a conveying belt is arranged in the outlet box, and a second tumbling roller is arranged above the conveying belt at the outlet of the screw conveyor.

[0012] Further, a strip-shaped hole is arranged on the side of the weighing box, a rubber strip is arranged at the strip-shaped hole, a cutting slot is arranged on the rubber strip, and the end of the hinge shaft is driven to lift by the first driving element after penetrating through the cutting slot.

[0013] Further, the first driving element comprises a driving belt, and the end of the hinge shaft is connected to the driving belt through a fixed block.

[0014] Further, the limiting component comprises an arc-shaped groove arranged on the inner side of the weighing box and a limiting column fixedly connected to the side of the weighing plate and matched with the arc-shaped groove.

[0015] Further, the liquid medicine quantitative unit comprises a medicine tank, a lower liquid pipe connected to the lower part of the medicine tank to supply medicine to the medicine inlet, and a first electric control valve arranged on the lower liquid pipe.

[0016] Further, the medicine tank is provided with a plurality of lower liquid pipes, and a transition tank and a liquid feeding pipe are further connected between the plurality of lower liquid pipes and the medicine inlet, and a second electric control valve is arranged on the liquid feeding pipe.

[0017] Further, the inclination angle of the inclined pipe is 30-60 degrees.

[0018] Further, the soil and medicine quantitative mixing device further comprises a measurement and control unit comprising a PLC controller and a liquid level sensor, a solid material level meter, a pressure sensor, an alarm, a man-machine interface, a first driving member, a second driving member, a third driving member, a first electric control valve and an iris mechanism connected to the PLC controller; the liquid level sensor and the solid material level meter are arranged in the medicine tank and the solid medicine tank respectively to detect the amount of medicine therein and alarm in time when the medicine is insufficient, the pressure sensor is arranged in the weighing tank to weigh the soil and transmit the weight signal to the PLC controller, and the man-machine interface can adjust the accurate proportioning of soil and medicine.

[0019] The soil and medicine quantitative mixing device has the advantages that: the soil weighing unit is arranged by two weighing plates and the like, which can accurately and quickly weigh the soil, conveniently release the soil and the remediation agent after weighing, and avoid the problem of easy caking of the existing auger quantitative device, and the soil remediation speed is relatively fast.

[0020] The medicine quantitative unit not only comprises a liquid medicine quantitative unit, but also comprises a special solid medicine quantitative unit, which can accurately quantify the liquid medicine and the solid medicine to mix with the soil, and the quantitative accuracy is not affected by clogging; in addition, the solid medicine quantitative unit of the present application can be used for continuous use of multiple solid medicines at the same time, and has high structural integration, which is convenient for better application to mobile ex-situ remediation equipment.

[0021] The mixing unit is arranged below the soil weighing unit and the medicine quantitative unit, and can directly mix the medicine and the soil, and the auger can realize re-mixing to some extent and can be used for conveying, compared with the existing mixing tank mixing method, the processing speed is faster, but the realization of this processing method depends on the previous two units, and the three units complement each other to realize better processing continuity to some extent, and solve the problems in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structural schematic view of one embodiment of the present application;

[0023] Figure 2 is a sectional structure schematic view of the soil weighing unit; Figure 1

[0024] Figure 3 is a sectional structure schematic view of the solid medicine quantitative unit; Figure 1

[0025] Figure 4 is a sectional structure schematic view of the quantitative cylinder; Figure 3

[0026] Figure 5 is an enlarged structure schematic view of the A part; Figure 1

[0027] Figure 6 is a structure schematic view applied to the soil remediation equipment. Figure 1

[0028] In the figure, a, the soil weighing unit, a1, the weighing box, a2, the feeding port, a3, the hinge shaft, a4, the weighing plate, a5, the first driving part, a6, the limiting part, a7, the medicine feeding port, a8, the temporary storage space, a9, the rubber strip, a10, the driving belt, a11, the connecting block;

[0029] b, the solid medicine quantitative unit, b1, the solid medicine box, b2, the horizontal partition plate, b3, the first vertical partition plate, b4, the iris mechanism, b5, the quantitative cylinder, b6, the second vertical partition plate, b7, the upper baffle, b8, the lower baffle, b9, the second driving part, b10, the third driving part, b11, the temporary medicine storage space, b12, the inclined pipe;

[0030] c, the liquid medicine quantitative unit, c1, the medicine box, c2, the first electric control valve, c3, the premixing box, c4, the liquid feeding pipe;

[0031] d, the mixing unit, d1, the first tumbling roller, d2, the auger, d3, the discharging box, d4, the conveying belt, d5, the second tumbling roller. DETAILED DESCRIPTION

[0032] In order to clearly illustrate the technical features of the present application, the present application will be described in detail below with specific embodiments, and in conjunction with the accompanying drawings. In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0033] ​​​​​As Figure 1 shown in the embodiment, the soil and medicine quantitative mixing device for soil remediation equipment includes a soil weighing unit a, a solid medicine quantitative unit b, a liquid medicine quantitative unit c and a mixing unit d;

[0034] As Figure 2 shown, the soil weighing unit a includes a weighing box a1, the top of which is provided with a feeding port a2, and the inside of the weighing box a1 is provided with a weighing mechanism, which includes two weighing plates a4 connected through a hinge shaft a3 and a first driving piece a5 for driving the lifting of the hinge shaft a3, and a limiting part a6 is arranged between the weighing plate a4 and the weighing box a1, which can be used to carry and weigh soil when the two weighing plates a4 are unfolded under the action of the limiting part a6, and the two weighing plates a4 will be gradually folded at an angle to discharge when the hinge shaft is lifted by the first driving piece a5; the side of the weighing box below the weighing plate a4 is provided with a medicine inlet a7;

[0035] As Figures 3-4 shown, the solid medicine quantitative unit b includes a solid medicine box b1, the inside of which is provided with a horizontal partition b2, and a plurality of first vertical partitions b3 are fixedly connected to the solid medicine box b1 above the horizontal partition b2 to enclose a plurality of circumferentially distributed medicine storage spaces, one of which is provided with a medicine outlet on the corresponding horizontal partition b2, and an iris mechanism b4 is arranged in the medicine outlet, and a quantitative cylinder b5 corresponding to the medicine outlet is connected to the bottom of the horizontal partition b2, a plurality of second vertical partitions b6 are arranged in the quantitative cylinder b5 to enclose a plurality of circumferentially distributed quantitative cavities, and an upper baffle b7 capable of shielding one of the quantitative cavities is arranged at the top of the quantitative cylinder b5, and a lower baffle b8 capable of shielding the remaining quantitative cavities is arranged at the bottom of the quantitative cylinder b5, at least one of the lower baffles b8 can be driven to rotate by a second driving piece b9, and the horizontal partition b2 can be driven to rotate by a third driving piece b10 to switch the medicine source, and a conical temporary medicine storage space b11 is formed at the lower part of the solid medicine box below the horizontal partition b2, and the bottom of the temporary medicine storage space b11 is connected to the medicine inlet through an inclined pipe b12, and the inclined pipe has an inclination angle of 30-60 degrees for better guiding effect;

[0036] In the above structure, the third driving piece can be a servo motor to drive the rotation of the horizontal partition. As for the second driving piece, the first structure is to directly drive the lower baffle with a servo motor, as Figure 3The second kind is as follows: when the lower baffle and the upper baffle center are connected through the rotating shaft rotating relative to the quantitative cylinder, a servo motor and an output gear can also be used for driving, and the two are simultaneously rotated by meshing the output gear and the edge toothed lower baffle, and the continuous quantitative discharge is realized by the simultaneous rotation. The use principle of the solid medicine quantitative unit continuous medicine discharge is as follows: first, rotate the horizontal baffle b2 to make the measuring cylinder correspond to one of the medicine storage spaces to be taken, then open the iris mechanism b4 to make the medicine enter the exposed quantitative cavity first, when the quantitative cavity is filled, close the iris mechanism b4, and the second driving mechanism b9 drives the lower baffle and the upper baffle to rotate to the position of one of the quantitative cavities filled with medicine, and the discharge starts. While discharging, if it is needed to continue to feed, the iris mechanism b4 can be opened to realize the feeding of another exposed quantitative cavity, and the rotation can be timed to realize the switching operation of feeding and discharging. When it is needed to switch the medicine storage space, the horizontal baffle can be rotated to the corresponding position by the third driving mechanism b10. Each quantitative cavity corresponds to a small unit, and the soil repair agent required for soil is set according to the multiple of the minimum unit corresponding to the soil amount.

[0037] As shown in Figure 6 The liquid medicine quantitative unit c includes a medicine box c1, the lower part of the medicine box c1 is connected with a lower liquid pipe to supply medicine to the medicine inlet, and the lower liquid pipe is provided with a first electric control valve c2.

[0038] As shown in Figure 2 The mixing unit d includes a first tumbling roller d1 arranged below the medicine inlet to preliminarily mix the entered medicine and soil.

[0039] Further, the weighing box a1 forms a temporary storage space a8 below the first tumbling roller d1, the mixing unit d further includes an auger d2 connected with the temporary storage space a8, the auger d2 is driven by a forward and reverse servo motor to realize the mixing and conveying functions. The discharge outlet of the auger is provided with a discharge box d3, the discharge box d3 is provided with a conveying belt d4, and the second tumbling roller d5 is arranged above the conveying belt d3 at the discharge outlet, which is mainly used for scattering the soil and realizing the mixing function by tumbling. The first tumbling roller and the second tumbling roller can be driven to rotate by ordinary motors.

[0040] As shown in Figure 5As shown, in one of the specific embodiments, the side of the weighing box a1 is provided with a strip-shaped hole for the hinge shaft, and the strip-shaped hole is provided with a rubber strip a9, and the rubber strip a9 is provided with a cutting seam parallel to the strip-shaped hole. The hinge shaft a3 penetrates the cutting seam and is driven by the first driving element a5. The rubber strip and the cutting seam thereon can better cover the hinge shaft, and only the rubber strip near the hinge shaft forms a hole for the hinge shaft to penetrate. As for the first driving element a5, it specifically includes a driving belt a10, and the driving belt a10 is fixedly connected with a connecting block a11, and the connecting block a11 is fixedly connected with the hinge shaft a3, so that the hinge shaft can be lifted and lowered by the driving belt a10, specifically by a forward and reverse motor.

[0041] As shown in Figure 2 In one of the specific embodiments, the limiting part a6 includes an arc-shaped groove opened in the inner side of the weighing box, and a limiting column fixedly connected with the side of the weighing plate and matched with the arc-shaped groove. During the unfolding or folding of the weighing plate, the limiting column will be limited to move along the arc-shaped groove to achieve the above functions. In addition to the above structure, the limiting part can also be provided with a limiting rod below the unfolded position of the weighing plate. When the two weighing plates are unfolded, the limiting rod can provide a supporting and limiting effect to make the two weighing plates unfold.

[0042] In one of the specific embodiments, as shown in Figure 1 Or Figure 6 As shown, the medicine box c1 is provided with a plurality of, and between the plurality of liquid outlet pipes and the medicine inlet, a transition box c3 and a liquid delivery pipe c4 are further connected, and a second electric control valve is further provided on the liquid delivery pipe.

[0043] In one of the specific embodiments, the solid medicine box is further provided with a material level meter, and the medicine box is further provided with a liquid level sensor.

[0044] In one of the specific embodiments, the soil and medicine quantitative mixing device will also be configured with a measurement and control unit in actual application, which specifically includes a PLC controller and liquid level sensors, solid material level meters, pressure sensors, alarms, human-computer interaction interfaces, first driving elements, second driving elements, third driving elements, first electric control valves and iris mechanisms connected with the PLC controller. The liquid level sensors and the material level meters are respectively arranged in the medicine box and the solid medicine box to monitor the liquid medicine and solid medicine reserves, so as to transmit a signal to the PLC controller when the amount of medicine is less than a certain value, so that the alarm alarms to notify the staff to supplement the medicine in time. The pressure sensor is arranged in the weighing box to weigh the soil and transmit the weight signal to the PLC controller to control the first driving element to work. The staff can adjust the ratio of medicine and soil by operating the human-computer interaction interface to adapt to different soil treatment of different plots. The alarm specifically can adopt a buzzer. In addition, when the medicine is insufficient, an alarm mark will also appear on the human-computer interaction interface to facilitate observation.

[0045] The working principle of the device is as follows: the pretreated soil enters the unfolded weighing plate a4 through the feed inlet a2 of the weighing box a1, and no more soil is fed when the set weight is reached. While the soil is being weighed, the required medicine is quantified. Specifically, if liquid medicine is required, the liquid medicine quantification unit is used for quantification; if solid medicine is required, the solid medicine quantification unit is used for quantification. The quantified medicine enters the space below the weighing plate a4 through the medicine inlet a7. The soil is collected under the action of the first driving member a5, so as to realize the release of the soil. The released soil is mixed with the medicine after being contacted with the first turning-over roller d1, and then the soil and the medicine are preliminarily mixed. After the preliminary mixing, the soil and the medicine enter the temporary storage space a8. At this time, the auger d2 works, and the mixture in the temporary storage space is processed back and forth for multiple times in the form of forward and reverse rotation, so as to realize secondary mixing to a certain extent. The second turning-over roller is used to realize tertiary mixing to a certain extent and to scatter the soil and the medicine, so that a better mixing effect can be achieved. The device is applied to a soil remediation equipment in the form shown in Figure 6

[0046] The specific embodiments described above cannot be regarded as a limitation on the protection scope of the present application. Any alternative improvement or change made to the embodiments of the present application by those skilled in the art falls within the protection scope of the present application. The details of the present application not described above are known to those skilled in the art.​

Claims

1. A soil and reagent dosing apparatus for use on a soil remediation plant, characterised in that, The application relates to a soil and medicine mixing device, which comprises a soil weighing unit, a medicine quantifying unit, a mixing unit and a control unit. The soil weighing unit comprises a weighing box, a feeding port arranged at the top of the weighing box, a weighing mechanism arranged in the weighing box, two weighing plates connected through a hinge shaft, a first driving element for driving the hinge shaft to lift, and a limiting component arranged between the weighing plates and the weighing box. When the two weighing plates are unfolded under the action of the limiting component, the two weighing plates can be used for carrying and weighing soil. When the hinge shaft is lifted through the first driving element, the two weighing plates are gradually folded in an angle state to discharge the soil. The medicine quantifying unit comprises a liquid medicine quantifying unit and a solid medicine quantifying unit. The side of the weighing box below the weighing plates is provided with a medicine feeding port. The solid medicine quantifying unit comprises a solid medicine box, a horizontal partition plate arranged in the solid medicine box, a plurality of first vertical partition plates fixed to the solid medicine box above the horizontal partition plate to enclose a plurality of circumferentially distributed medicine storage spaces, a liquid outlet arranged on the horizontal partition plate corresponding to one of the medicine storage spaces, an iris mechanism arranged in the liquid outlet, a quantifying cylinder connected to the liquid outlet corresponding to the horizontal partition plate, a plurality of second vertical partition plates arranged in the quantifying cylinder to enclose a plurality of circumferentially distributed quantifying cavities, an upper baffle arranged at the top of the quantifying cylinder to shield one of the quantifying cavities, a lower baffle arranged at the bottom of the quantifying cylinder to shield the remaining quantifying cavities, at least one of the lower baffles being driven to rotate through a second driving element, and the horizontal partition plate being driven to rotate through a third driving element to switch the medicine source.

2. The soil and reagent dosing and mixing apparatus for use on a soil remediation apparatus as claimed in claim 1, wherein, The lower part of the solid medicine box below the horizontal partition plate forms a conical temporary medicine storage space, and the bottom of the temporary medicine storage space is connected to the medicine feeding port through an inclined pipe.

3. The soil and reagent dosing and mixing apparatus for use on a soil remediation apparatus as claimed in claim 1, wherein, The mixing unit comprises a first tumbling roller arranged below the medicine feeding port to preliminarily mix the entered medicine and soil.

4. The soil and reagent dosing and mixing apparatus for use on a soil remediation apparatus as claimed in claim 1, wherein, The weighing box below the first tumbling roller forms a temporary storage space.

5. The soil and reagent dosing and mixing apparatus for use on a soil remediation apparatus as claimed in claim 4, wherein, The mixing unit further comprises a screw conveyor connected to the temporary storage space.

6. The soil and reagent dosing and mixing apparatus for use on a soil remediation apparatus of claim 1, wherein, The side of the weighing box is provided with a strip-shaped hole, and a rubber strip is arranged at the strip-shaped hole.

7. The soil and reagent dosing and mixing apparatus for use in soil remediation equipment of claim 4, wherein, The end of the hinge shaft passes through a cutting seam of the rubber strip and is driven to lift by the first driving element. The first driving element comprises a driving belt, and the end of the hinge shaft is connected to the driving belt through a fixed block. The outlet of the screw conveyor is provided with an outlet box, and the outlet box is provided with a conveying belt. The limiting component comprises an arc-shaped groove arranged in the inner side of the weighing box and a limiting column fixed to the side of the weighing plate and matched with the arc-shaped groove. The liquid medicine quantifying unit comprises a medicine box, a liquid outlet connected to the lower part of the medicine box to supply medicine to the medicine feeding port, and a first electric control valve arranged on the liquid outlet. The medicine box is provided with a plurality of liquid outlets, and a transition box and a liquid feeding pipe are further connected between the plurality of liquid outlets and the medicine feeding port. The inclined angle of the inclined pipe is 30-60 degrees. The control unit comprises a PLC controller and a liquid level sensor, a solid level meter, a pressure sensor, an alarm, a man-machine interface, the first driving element, the second driving element, the third driving element, the first electric control valve and the iris mechanism connected to the PLC controller. The liquid level sensor and the solid level gauge are respectively arranged in the medicine tank and the solid medicine tank to detect the amount of medicine therein and timely alarm through the alarm when the medicine is insufficient, the pressure sensor is arranged in the weighing tank to weigh the soil and transmit the weight signal to the PLC controller, and the man-machine interface can adjust the accurate proportioning of the soil and the medicine.

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