WO2021093237A1 - Heavy metal contaminated soil remediation experimental device - Google Patents

Heavy metal contaminated soil remediation experimental device Download PDF

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Publication number
WO2021093237A1
WO2021093237A1 PCT/CN2020/079381 CN2020079381W WO2021093237A1 WO 2021093237 A1 WO2021093237 A1 WO 2021093237A1 CN 2020079381 W CN2020079381 W CN 2020079381W WO 2021093237 A1 WO2021093237 A1 WO 2021093237A1
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WO
WIPO (PCT)
Prior art keywords
sampling
tank
heavy metal
contaminated soil
tank body
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PCT/CN2020/079381
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French (fr)
Chinese (zh)
Inventor
高莹
孙英杰
王华伟
赵建伟
王亚楠
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青岛理工大学
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Publication of WO2021093237A1 publication Critical patent/WO2021093237A1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/10Reclamation of contaminated soil microbiologically, biologically or by using enzymes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/27Mixers having moving endless chains or belts, e.g. provided with paddles, as mixing elements

Definitions

  • the invention belongs to the field of remediation of heavy metal contaminated soil, and specifically relates to an experimental device for remediation of heavy metal contaminated soil.
  • Soil pollution as a problem that restricts the sustainable development of human society, is increasingly receiving extensive attention from countries all over the world.
  • soil heavy metal pollution has become increasingly serious.
  • Most of the heavy metal pollutants in the soil remain in the cultivated soil layer. They are less mobile, difficult to decompose, and highly toxic. They cause secondary pollution to groundwater and surface water. They enter the human body through the food chain through drinking water or soil-plant systems, and endanger human health. Therefore, it is urgent to repair the soil contaminated by heavy metals and restore the original functions of the soil.
  • Remediation of heavy metal contaminated soil is a technical measure to restore the normal function of contaminated soil. It refers to the use of physical, chemical and biological methods to transfer, absorb, degrade and transform pollutants in the soil to reduce its concentration to an acceptable level, or Transform toxic and harmful pollutants into harmless substances; due to the different types of heavy metal contaminated soils, it is often necessary to conduct experimental research in the laboratory before field remediation to verify that the technology is effective and mature before field application.
  • the existing devices have many shortcomings as follows:
  • the existing device cannot achieve anaerobic sampling. During the experiment, it is often necessary to open the device to sample experimental samples for monitoring and analysis. The existing device sampling process requires the device to be opened and closed after sampling. Every sampling operation needs to destroy the anaerobic environment of the device.
  • the present invention proposes a new device, which is realized by adopting the following technical solutions:
  • An experimental device for remediation of heavy metal contaminated soil including a tank body and a tank cover, and also includes: a belt-type stirring device, located in the tank body, including four transmission shafts arranged in a trapezoid shape, a runner is installed on the outside of the transmission shaft, and a conveyor belt is set On the runner, the longitudinal interface of the conveyor belt is trapezoidal, and the long side of the trapezoid is close to the inner wall of the tank.
  • the inner side of the conveyor belt is provided with internal teeth matched with the runner, and the outer side is provided with a number of stirring teeth;
  • the driving device includes the installation outside the tank The motor and the power converter located in the tank. The motor drives the power converter through the rotating shaft to drive the lowermost transmission shaft to rotate, and then drives the conveyor belt to drive; the sampling port is opened on the side wall of the tank, and a sampler is installed on the sampling port.
  • the power converter includes a housing, the rotating shaft extends laterally into the housing, the rotating shaft is provided with tooth patterns, a gear disc meshing with the tooth patterns is installed in the housing, and the lowermost transmission shaft It extends longitudinally into the housing and is rigidly mounted on the gear plate.
  • the sampler includes a sampling cylinder, a sampling rod located in the sampling cylinder, the sampling rod is provided with a transmission pattern, one end extends out of the sampling cylinder connection handle, the other section is connected to a piston, one end of the sampling cylinder is provided with a sampling port, and the other One section has a sample unloading port.
  • sampling ports include upper, middle and lower three.
  • two blocking blocks are provided on the wall of the sampling cylinder.
  • a glass observation window is provided on the tank body.
  • the number of the belt-type stirring device is 3, and the angle between the two is 120 degrees.
  • a cleaning port is provided at the bottom of the tank body, and a sealing baffle is installed on the cleaning port.
  • the invention is equipped with an anaerobic uniform stirring system, which can realize the uniform anaerobic stirring of the experimental sample agent in the experimental device.
  • the system is suitable for the experimental sample agent in various states such as solid, liquid, solid-liquid mixed state, and the scope of application Wide, especially suitable for the remediation of heavy metal contaminated soil.
  • the present invention realizes accurate sampling for anaerobic experiments, and can realize precise anaerobic sampling for fixed-point positioning without opening the experimental device under the anaerobic environment inside the experimental device. The entire sampling process will not damage the anaerobic environment inside the experimental device, and can achieve precise anaerobic sampling at different depths and locations, so that the experimental data analysis is more scientific and accurate.
  • Figure 1 Schematic diagram of the structure of the experimental device for remediation of heavy metal contaminated soil according to the present invention
  • FIG. 1 Schematic diagram of the structure of the present invention when the sealing is working
  • FIG. 3 A schematic diagram of the A-A direction structure of the present invention.
  • FIG. 4 Schematic diagram of the B-B direction structure of the present invention.
  • FIG. 5 Schematic diagram of the main structure of the sampler
  • FIG. 6 Schematic diagram of the sampler during unloading work
  • Figure 7 A partial enlarged view of the C area of the sampler
  • FIG. 8 Schematic diagram of the main structure of the power converter
  • Figure 9 A partial enlarged side view of the D area of the power converter
  • Figure 10 Schematic diagram of the main structure of the runner
  • sampling rod 32 transmission pattern 33, sample discharge port 34, Cylinder wall 35, threaded port 36, piston 37, sample inlet 38, sample receiving area 39, sample container 40, thread 41, bolt 42, power converter 43, fixed base 44, bearing 45, conveyor belt 46, base frame 47.
  • this embodiment proposes a heavy metal contaminated soil remediation experimental device, which includes a tank, a tank cover, a belt stirring device, a motor, a power converter, a sampling port, and a sampler.
  • a steel hinge 21 with a length of 5 cm is set at the top of the tank body 20, a steel fixing bolt 10 with a height of 3 cm and a thickness of 1.5 cm is set on the opposite side of the hinge 21, and a steel hinge with a diameter of 100 cm and a height of 15 cm is installed on the hinge 21
  • the can lid 3, the can lid 3 can be opened and closed freely under the action of the hinge 21, a sealing ring 8 with a thickness of 0.5cm is set on the lower edge of the can lid 3, and a ring with a thickness of 0.5cm is set on the upper edge of the can body 20
  • the sealing ring 9, the sealing ring 8 and the sealing ring 9 are exactly the same.
  • the sealing ring 8 and the sealing ring 9 can seal the tank body 20 and the tank lid 3; in the tank lid 3 and the fixing bolt A steel live buckle 1 with a length of 5 cm and a width of 3 cm is set at the corresponding position.
  • the live buckle 1 and the fixing bolt 10 are exactly the same.
  • the can lid 3 can be opened around the hinge 21; a feeding port 4 with a diameter of 15 cm is opened on the upper part of the can lid 3, and a rubber sealing cover plate 2 with a diameter of 15 cm and a height of 4 cm is set for use
  • the sealing cover 2 and the feeding port 4 are relatively fixed and sealed by a thread 41 with a depth of 0.1 cm.
  • the tank body 20 is In a sealed state, when the sealing cover 2 is opened, experiment materials can be added to the tank through the feeding port 4; an exhaust port 7 with a diameter of 2 cm is opened on the upper part of the tank cover 3, and an inner diameter is installed at the exhaust port 7.
  • a steel exhaust pipe 5 with a length of 2cm and a length of 5cm is installed on the exhaust pipe 5 with a check valve 6 with a length of 3cm and a width of 3cm and a height of 5cm.
  • the gas can be smoothly discharged through the exhaust pipe 5, and the check valve 6 can prevent the gas outside the tank from entering the tank body 20.
  • a belt-type stirring device 27 is installed in the tank.
  • the device includes four transmission shafts 48 arranged in a trapezoid shape.
  • a runner 15 is installed on the outside of the transmission shaft.
  • the conveyor belt 46 is sleeved on the runner 45.
  • the longitudinal interface of the conveyor belt 46 is trapezoidal and trapezoidal.
  • the long side is close to the inner wall of the tank.
  • the inner side of the conveyor belt 46 is provided with internal teeth matched with the runners, and the outer side is provided with a number of stirring teeth;
  • a motor 18 is installed outside the tank, a power converter 43 is installed inside the tank, and the motor 18 passes through the rotating shaft.
  • the driving power converter drives the lowermost drive shaft to rotate, and then drives the conveyor belt to drive;
  • a sampling port 23 is provided on the side wall of the tank body, and a sampler 54 is installed on the sampling port.
  • the tank body 20 in this embodiment is a steel tank body with a diameter of 100 cm and a height of 150 cm.
  • a bottom cleaning port 19 with a diameter of 10 cm is provided 5 cm above the bottom of the cylinder 22.
  • the bottom cleaning port 19 is sealed by a rubber sealing baffle 11 with a diameter of 10 cm.
  • the cleaning port 19 is sealed.
  • the sealing baffle 11 is fixed to the tank body 20 by bolts 42.
  • the bolts 42 can control the insertion and removal of the sealing baffle 11, and the insertion and removal of the sealing baffle 11 can control the closing of the bottom cleaning port 19 And open.
  • Two glass observation windows 12 with a length of 120 cm and a width of 5 cm are arranged on the side wall of the tank body 20.
  • the upper end of the observation window 12 is 10 cm away from the upper edge of the tank body 20, and the lower end of the observation window 12 is 20 cm away from the lower edge of the tank body 20.
  • the observation window 12 and The tank body 20 is sealed, and the minimum included angle between the two observation windows 12 is 120°; three sampling ports with a diameter of 5 cm are provided on the side wall of the tank body 20, namely the upper sampling port 14 and the middle sampling port 23.
  • the bottom sampling port 24, the upper sampling port 14, the middle sampling port 23, and the bottom sampling port 24 are in a straight line in the vertical direction.
  • the upper sampling port 14 is 10 cm from the upper edge of the tank body 20, and the middle sampling port 23 is located in the tank body 20.
  • the bottom sampling port 24 is 20cm away from the lower edge of the tank body 20, and the angle between the two observation windows 12 and the center line of the sampling port is 120°
  • a steel sampler 54 with a diameter of 4 cm is installed in the upper sampling port 14, the middle sampling port 23, and the bottom sampling port 24.
  • the sampler 54 and the tank body 20 are sealed by a rubber ring 25 with a thickness of 0.45 cm.
  • the sampler 54 The rubber ring 25 can be pushed and pulled freely without affecting the sealing effect of the rubber ring 25; three sets of belt stirring devices 27 with a length of 70 cm and a width of 13 cm are set inside the tank body 20.
  • the belt stirring device 27 is made of steel with a width of 4 cm.
  • the fixed base 44 is fixed on the inner wall of the tank body 20.
  • the fixed base 44 at both ends of each group of belt stirring device 27 is 7cm high, and the middle fixed base 44 is 15cm high.
  • the clamps between the three groups of belt stirring devices 27 The angle is 120°, and the angle between each group of belt stirring device 27 and the adjacent observation window 12 or sampling port is 60°
  • the belt stirring device 27 includes: a motor shaft 13, a runner 15, an inner tooth 16, a stirring tooth 17, a motor 18, a rubber ring 26, a bracket 28, a groove 29, a power converter 43, a bearing 45, a conveyor belt 46, and a transmission
  • the shaft 48 is composed of: under the action of the fixed base 44, the cross section of the belt stirring device 27 is trapezoidal, the long side of the trapezoid is close to the inner wall of the tank 20, and the short side of the trapezoid is away from the inner wall of the tank 20;
  • a bearing 45 with an outer diameter of 4cm and an inner diameter of 2cm is installed at the end of a fixed base 44.
  • a steel drive shaft 48 with a diameter of 2cm is installed in the two bearings 45 of each fixed base 44, and a steel transmission shaft 48 with a diameter of 2cm is installed on the two bearings 45.
  • a runner 15 with an outer diameter of 3cm and an inner diameter of 2cm and a length of 13cm is fixedly installed on each drive shaft 48 in between.
  • the drive shaft 48 can rotate freely in the bearing 45.
  • the lowermost drive shaft 48 is connected to a steel with a diameter of 2cm.
  • the motor shaft 13 is rigidly connected, the bottom drive shaft 48 is the driving shaft, and the rest are driven shafts; the outer side of the runner 15 is provided with a 0.5 cm deep groove 29; the outer side of each group of runners 15 is installed
  • a conveyor belt 46 with a width of 13 cm and a thickness of 0.6 cm is provided with internal teeth 16 with a height of 0.5 cm on the inner side of the conveyor belt 46, and stirring teeth 17 with a width of 13 cm and a height of 1.5 cm are provided on the outer side of the conveyor belt 46; Under the action of the internal teeth 16 and the groove 29, there will be no sliding between the runner 15 and the conveyor belt 46; a fixed base 44 at the bottom of each group of belt stirring devices 27 is installed with a length of 4 cm and a width of 4 cm.
  • the bracket 28 is fixedly installed with three groups of motors 18 with a length of 10 cm, a width of 10 cm and a height of 10 cm.
  • the motor shaft 13 of each group of motors 18 passes through the side wall of the tank body 20 and is connected to the power converter 43, and the motor shaft 13 is connected to the side wall of the tank body 20.
  • the rubber ring 26 with an outer diameter of 3cm and an inner diameter of 2cm is used for sealing treatment, and the motor shaft 13 can rotate freely on the rubber ring 26; when the motor 18 is working, the motor shaft 13 is driven to rotate, and the rotation direction is changed by the power converter 43 to drive the transmission
  • the shaft 48 rotates, and the runner 15 on the transmission shaft 48 drives the conveyor belt 46 to move under the action of the internal teeth 16 and the groove 29.
  • the direction of rotation of the conveyor belt 46 is from the inner wall of the tank body 20 to the center of the tank body 20 when viewed from the bottom.
  • the direction of rotation of the conveyor belt 46 is to drive from the center of the tank body 20 to the inner wall of the tank body 20; when the conveyor belt 46 rotates under the drive of the runner 15, the stirring teeth 17 on the conveyor belt 46 can drive the experimental materials in the tank body 20 to face each other. Move to achieve the purpose of stirring.
  • the power converter 43 is composed of a base frame 47, a gear plate 49, a sealing ring 50, a thread 51, a gear tooth 52, a bearing 53, an opening 55 and a housing 56: a steel with a length of 4cm, a width of 4cm and a height of 4cm is set
  • the housing 56 is made.
  • a circular opening 55 with a diameter of 3 cm is provided on one side of the housing 56.
  • the motor shaft 13 passes through the opening 55 and extends into the housing 56.
  • An outer diameter of 3 cm and an inner diameter of 2 cm are provided between the motor shaft 13 and the opening 55.
  • the motor shaft 13 can rotate freely in the sealing ring 50; a steel base frame 47 with a width of 3cm and a height of 3cm is set near the opening 55 and the end of the motor shaft 13, at one end of each base frame 47 Install a bearing 53 with an inner diameter of 1.5 cm, and fix the motor shaft 13 on the inner wall of the housing 56 through the base frame 47, but the motor shaft 13 can freely rotate through the bearing 53; on the motor shaft 13 at the end of the base frame 47 at the end of the motor shaft 13 A thread 51 with a length of 3cm and a depth of 0.5cm is provided; a circular opening 55 with a diameter of 3cm is opened above the cylinder wall of the housing 56, and the transmission shaft 48 just passes through the opening 55 and extends into the housing 56 between the transmission shaft 48 and the opening 55 A sealing ring 50 with an outer diameter of 3cm and an inner diameter of 2cm is set, and the transmission shaft 48 can rotate freely in the sealing ring 50; a gear disc 49 with a diameter
  • the gear plate 49 is just in contact with the motor shaft 13 in the housing 56.
  • the drive shaft 48 is fixed on the inner wall of the housing 56 through the base frame 47 at a position close to the gear plate 49, but the drive shaft 48 can be freely rotated through the bearing 53; gear teeth 52 with a depth of 0.5 cm are provided on the outside of the gear plate 49. 52 and the thread 51 are exactly the same.
  • the gear wheel 49 is driven to rotate by the action of the gear teeth 52 and the thread 51, and then the transmission shaft 48 is driven to rotate through the gear wheel 49.
  • the sampler 54 consists of a handle 30, a sampling cylinder 31, a sampling rod 32, a transmission pattern 33, a sample discharge port 34, a cylinder wall 35, a threaded port 36, a piston 37, a sample inlet 38, and a sample holder.
  • the cylinder 40, the clamp 57, the snap ring 58, the thread 59 and the cylinder mouth 60 are composed of: a steel sampling cylinder 31 with a length of 55 cm and a diameter of 4 cm is set, and a steel sampling cylinder 31 with a length of 1 cm and a width of 1 cm is set on both ends of the sampling cylinder 31.
  • the clamping block 57, the sampling cylinder 31 passes through the rubber ring 25 and enters the inside of the tank body 20.
  • the sampling cylinder 31 can freely push and pull in the rubber ring 25 without affecting the sealing effect of the rubber ring 25.
  • the clamping blocks 57 at both ends of the sampling cylinder 31 can Control the extreme position of the push-pull movement of the sampling cylinder; a cylinder mouth 60 with a diameter of 4 cm is provided at the end of the sampling cylinder 31 located inside the tank body 20, and a sample discharge port 34 with a length of 4 cm and a width of 4 cm is provided under the end of the sampling cylinder 31 away from the cylinder mouth 60.
  • a steel sample container 40 with a diameter of 4 cm and a length of 4 cm is arranged in the sampling cylinder 31, and a sample inlet 38 with a length of 4 cm and a width of 4 cm is arranged below the sample container 40.
  • the sample discharge port 34 and the sample inlet 38 can coincide exactly ;
  • a layer of rubber pistons 37 with a diameter of 4cm and a thickness of 1cm are arranged on the outer walls of the sample cylinder 40.
  • the piston 37 can move horizontally in the sampling cylinder 31 and can play a sealing role; at the center of the cylinder wall 35 of the sampling cylinder 31 A threaded port 36 with a diameter of 0.6cm is set in the threaded port 36, a thread 59 with a depth of 0.05cm is set in the threaded port 36; a steel sampling rod 32 with a length of 60cm and a diameter of 0.7cm is set, and a transmission with a length of 50cm and a depth of 0.05cm is set on the sampling rod 32
  • the pattern 33, the transmission pattern 33 and the thread 59 are exactly the same.
  • a steel handle 30 with a length of 10 cm and a diameter of 1.5 cm is set at the end of the sampling rod 32 outside the sampling cylinder 31; a diameter of the sampling rod 32 is 5 cm from the handle 30.
  • a steel snap ring 58 with a width of 2 cm and a width of 0.2 cm can control the extension limit of the sampling rod 32 toward the inside of the sampling barrel 31 to ensure that at least one piston 37 is always in the sampling barrel 31, thereby achieving a sealing effect.
  • the sampling cylinder 31 is pushed to the position where sampling is required, and the sample cylinder 40 is pushed out of the cylinder mouth 60 by the screw handle 30 under the action of the transmission pattern 33 and the thread 59.
  • the test sample in the tank body 20 is It is squeezed into the sample holding area 39 of the sample holding cylinder 40 under the action of gravity; the handle 30 is reversely twisted, and the sample holding cylinder 40 is pulled to the outside of the tank body 20 under the action of the transmission pattern 33 and the thread 59, and the sample is unloaded
  • the port 34 coincides with the sample inlet 38.
  • the experimental sample in the sample holding area 39 is collected and processed through the sample discharge port 34 under the action of its own gravity, and the sampling operation is completed.
  • the interior of the tank body 20 and the outside air are always in contact with the outside air during the entire sampling process. In a relatively sealed state, outside air cannot enter the inside of the tank 20.
  • sample holding area 39 In the sample holding area 39; turn the handle 30 in the reverse direction, and pull the sample holding cylinder 40 to the outside of the tank body 20 under the action of the transmission pattern 33 and the thread 59.
  • the sample discharge port 34 and the sample inlet 38 coincide exactly, the sample holding area
  • the experimental samples in 39 are collected and processed through the sample discharge port 34 under the action of their own gravity, and the sampling operation is completed.
  • the interior of the tank 20 and the outside air are always in a relatively sealed state during the entire sampling process, and the outside air cannot enter the inside of the tank 20.
  • the sealing baffle 11 at the bottom of the tank body 20 is opened, and the experimental waste and cleaning wastewater are discharged through the bottom cleaning port 19 for collection, and further processed in accordance with the corresponding operating procedures.

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  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
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  • General Health & Medical Sciences (AREA)
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Abstract

Disclosed is a heavy metal contaminated soil remediation experimental device, comprising a tank body (20) and a tank cover (3), and further comprising a belt-type stirring device (27), which is located in the tank body and comprises four transmission shafts (48) arranged in a trapezoid shape, wherein rotating wheels (15) are mounted on outer sides of the transmission shafts, a conveying belt (46) is arranged on the rotating wheels in a sleeved manner, inner teeth (16) matching the rotating wheels are arranged on an inner side of the conveying belt, and a plurality of stirring teeth (17) are arranged on an outer side of the conveying belt; a driving device, comprising an electric motor (18) mounted outside the tank body and a power converter (43) located in the tank body; and sampling ports (14, 23, 24), that are provided in a side wall of the tank body, wherein a sampler (54) is mounted on the sampling port. Uniform anaerobic stirring of an experimental sample agent is achieved, and fixed-point positioning accurate anaerobic sampling work can be achieved without opening the experimental device while guaranteeing an anaerobic environment in the experimental device.

Description

一种重金属污染土壤修复实验装置Experimental device for remediation of heavy metal contaminated soil 技术领域Technical field
本发明属于重金属污染土壤的修复领域,具体涉及一种重金属污染土壤修复实验装置。The invention belongs to the field of remediation of heavy metal contaminated soil, and specifically relates to an experimental device for remediation of heavy metal contaminated soil.
背景技术Background technique
土壤污染作为一个制约人类社会可持续发展的问题正日益受到世界各国的广泛关注。随着工业化和城市化的飞速发展,土壤重金属污染日趋严重。土壤中的重金属污染物大部分残留于土壤耕层,少移动、难降解、毒性大,对地下水、地表水造成次污染,通过饮用水或土壤—植物系统经由食物链进入人体而危及人类健康。因此,修复重金属污染土壤,恢复土壤原有功能,刻不容缓。Soil pollution, as a problem that restricts the sustainable development of human society, is increasingly receiving extensive attention from countries all over the world. With the rapid development of industrialization and urbanization, soil heavy metal pollution has become increasingly serious. Most of the heavy metal pollutants in the soil remain in the cultivated soil layer. They are less mobile, difficult to decompose, and highly toxic. They cause secondary pollution to groundwater and surface water. They enter the human body through the food chain through drinking water or soil-plant systems, and endanger human health. Therefore, it is urgent to repair the soil contaminated by heavy metals and restore the original functions of the soil.
重金属污染土壤修复是使遭受污染的土壤恢复正常功能的技术措施,是指利用物理、化学和生物的方法转移、吸收、降解和转化土壤中的污染物,使其浓度降低到可接受水平,或将有毒有害的污染物转化为无害的物质;由于重金属污染土壤类型各异,在实地修复之前,往往需要先在实验室进行实验研究,验证技术有效且成熟后进行实地应用。Remediation of heavy metal contaminated soil is a technical measure to restore the normal function of contaminated soil. It refers to the use of physical, chemical and biological methods to transfer, absorb, degrade and transform pollutants in the soil to reduce its concentration to an acceptable level, or Transform toxic and harmful pollutants into harmless substances; due to the different types of heavy metal contaminated soils, it is often necessary to conduct experimental research in the laboratory before field remediation to verify that the technology is effective and mature before field application.
现有装置存在如下诸多缺陷:The existing devices have many shortcomings as follows:
1、在重金属污染土壤修复实验研究过程中,大多需要厌氧菌的作用,而现有装置不能实现厌氧搅拌,在实验样剂混合搅拌过程中,加速氧气在实验样剂中的溶解,不利于厌氧微生物对重金属污染土壤修复,影响修复实验效果。1. In the experimental research process of heavy metal contaminated soil remediation, most of the effects of anaerobic bacteria are needed, but the existing devices cannot realize anaerobic stirring. During the mixing and stirring process of the experimental reagents, the dissolution of oxygen in the experimental reagents is accelerated. It is beneficial to the remediation of heavy metal contaminated soil by anaerobic microorganisms and affects the effect of the remediation experiment.
2、现有装置容易产生搅拌适用范围有限而且搅拌不均匀。对于液态具有较好的搅拌效果,对于固态、固液混合态的搅拌效果不高,而重金属污染土壤修复以固液混合态和粘稠状态为主,实验样剂搅拌不 均匀,影响修复实验效果。2. Existing devices are prone to have limited mixing scope and uneven mixing. It has a good stirring effect for the liquid, and the stirring effect for the solid and solid-liquid mixed state is not high. The remediation of heavy metal contaminated soil is mainly in the solid-liquid mixed state and the viscous state. The sample agent is unevenly stirred, which affects the effect of the remediation experiment. .
3、现有装置不能实现厌氧取样工作。在实验过程中,会经常需要打开装置进行实验样品取样,用来进行监测分析,现有装置取样过程均需要打开装置,取样后在封闭,每一次取样操作均需破坏装置厌氧环境。3. The existing device cannot achieve anaerobic sampling. During the experiment, it is often necessary to open the device to sample experimental samples for monitoring and analysis. The existing device sampling process requires the device to be opened and closed after sampling. Every sampling operation needs to destroy the anaerobic environment of the device.
4、现有装置不能实现定点定位精准厌氧取样工作。取样位置不精准,影响实验数据分析。4. The existing device cannot achieve precise anaerobic sampling with fixed-point positioning. The sampling location is not accurate, which affects the analysis of experimental data.
综上,提出一种厌氧均匀搅拌且实现精准厌氧取样的重金属污染土壤修复实验装置则成为本发明所面临的重要课题。In summary, to propose an experimental device for remediation of heavy metal contaminated soil with anaerobic uniform stirring and accurate anaerobic sampling has become an important issue faced by the present invention.
发明内容Summary of the invention
本发明针对现有重金属污染土壤修复实验装置无法实现厌氧均匀搅拌及精准厌氧取样问题,提出一种新装置,采用如下技术方案予以实现:Aiming at the problem that the existing heavy metal contaminated soil remediation experiment device cannot achieve anaerobic uniform stirring and precise anaerobic sampling, the present invention proposes a new device, which is realized by adopting the following technical solutions:
一种重金属污染土壤修复实验装置,包括罐体及罐盖,还包括:带式搅拌装置,位于罐体内,包括四个呈梯形排列的传动轴,传动轴的外侧安装有转轮,传送带套装上所述转轮上,传送带纵向界面呈梯形,梯形长边靠近罐体内壁,传送带的内侧设有与所述转轮配合的内齿,外侧设有若干搅拌齿;驱动装置,包括安装在罐体外的电机及位于罐体内的动力转换器,电机通过转轴驱动动力转换器带动最下方传动轴转动,进而带动传送带传动;取样口,开在罐体侧壁上,取样口上安装有取样器。An experimental device for remediation of heavy metal contaminated soil, including a tank body and a tank cover, and also includes: a belt-type stirring device, located in the tank body, including four transmission shafts arranged in a trapezoid shape, a runner is installed on the outside of the transmission shaft, and a conveyor belt is set On the runner, the longitudinal interface of the conveyor belt is trapezoidal, and the long side of the trapezoid is close to the inner wall of the tank. The inner side of the conveyor belt is provided with internal teeth matched with the runner, and the outer side is provided with a number of stirring teeth; the driving device includes the installation outside the tank The motor and the power converter located in the tank. The motor drives the power converter through the rotating shaft to drive the lowermost transmission shaft to rotate, and then drives the conveyor belt to drive; the sampling port is opened on the side wall of the tank, and a sampler is installed on the sampling port.
进一步地,所述动力转换器包括壳体,所述转轴横向伸入所述壳体内,转轴上设有齿纹,壳体内安装有与所述齿纹啮合的齿轮盘,所述最下方传动轴纵向伸入所述壳体中,刚性安装在所述齿轮盘上。Further, the power converter includes a housing, the rotating shaft extends laterally into the housing, the rotating shaft is provided with tooth patterns, a gear disc meshing with the tooth patterns is installed in the housing, and the lowermost transmission shaft It extends longitudinally into the housing and is rigidly mounted on the gear plate.
进一步地,所述取样器包括取样筒,位于取样筒内的取样杆,取样杆上设有传动纹,一端伸出取样筒连接把手,另一段连接活塞,取 样筒一端开有进样口,另一段开有卸样口。Further, the sampler includes a sampling cylinder, a sampling rod located in the sampling cylinder, the sampling rod is provided with a transmission pattern, one end extends out of the sampling cylinder connection handle, the other section is connected to a piston, one end of the sampling cylinder is provided with a sampling port, and the other One section has a sample unloading port.
进一步地,所述取样口包括上、中、下三个。Further, the sampling ports include upper, middle and lower three.
进一步地,所述取样筒壁上设有两个卡块。Further, two blocking blocks are provided on the wall of the sampling cylinder.
进一步地,所述罐体上设有玻璃观察窗。Further, a glass observation window is provided on the tank body.
进一步地,所述带式搅拌装置的个数为3个,两两之间夹角为120度。Further, the number of the belt-type stirring device is 3, and the angle between the two is 120 degrees.
进一步地,所述罐体底部设有清洁口,所述清洁口上安装有密封挡板。Further, a cleaning port is provided at the bottom of the tank body, and a sealing baffle is installed on the cleaning port.
与现有技术相比,本发明的优点和积极效果在于:Compared with the prior art, the advantages and positive effects of the present invention are:
本发明带有厌氧均匀搅拌系统,可在实验装置内实现实验样剂的均匀厌氧搅拌,同时,该系统适用于固态、液态、固液混合态等各种状态的实验样剂,适用范围广,特别适合于重金属污染土壤修复。另外本发明实现了厌氧实验精准取样,在保证实验装置内部厌氧环境下,不必打开实验装置,即可实现定点定位精准厌氧取样工作。整个取样过程不会破坏实验装置内部的厌氧环境,而且可以实现不同深度、不同位置的精准厌氧取样,从而使实验数据分析更科学、更精确。The invention is equipped with an anaerobic uniform stirring system, which can realize the uniform anaerobic stirring of the experimental sample agent in the experimental device. At the same time, the system is suitable for the experimental sample agent in various states such as solid, liquid, solid-liquid mixed state, and the scope of application Wide, especially suitable for the remediation of heavy metal contaminated soil. In addition, the present invention realizes accurate sampling for anaerobic experiments, and can realize precise anaerobic sampling for fixed-point positioning without opening the experimental device under the anaerobic environment inside the experimental device. The entire sampling process will not damage the anaerobic environment inside the experimental device, and can achieve precise anaerobic sampling at different depths and locations, so that the experimental data analysis is more scientific and accurate.
附图说明Description of the drawings
图1本发明重金属污染土壤修复实验装置结构示意图;Figure 1 Schematic diagram of the structure of the experimental device for remediation of heavy metal contaminated soil according to the present invention;
图2本发明密封工作时结构示意图;Figure 2 Schematic diagram of the structure of the present invention when the sealing is working;
图3本发明A-A向结构示意图;Fig. 3 A schematic diagram of the A-A direction structure of the present invention;
图4本发明B-B向结构示意图;Fig. 4 Schematic diagram of the B-B direction structure of the present invention;
图5取样器主体结构示意图;Figure 5 Schematic diagram of the main structure of the sampler;
图6取样器卸样工作时示意图;Figure 6 Schematic diagram of the sampler during unloading work;
图7取样器C区局部放大图;Figure 7: A partial enlarged view of the C area of the sampler;
图8动力转换器主体结构示意图;Figure 8 Schematic diagram of the main structure of the power converter;
图9动力转换器D区局部放大侧视图;Figure 9 A partial enlarged side view of the D area of the power converter;
图10转轮主体结构示意图;Figure 10 Schematic diagram of the main structure of the runner;
以上各图中具有:活扣1、密封盖板2、罐盖3、投料口4、排气管5、止回阀6、排气口7、密封圈8、密封圈9、固定栓10、密封挡板11、观察窗12、转轴13、上部取样口14、转轮15、内齿16、搅拌齿17、电机18、底部清洗口19、罐体20、折页21、筒底22、中部取样口23、底部取样口24、橡胶圈25、橡胶环26、带式搅拌装置27、支架28、凹槽29、把手30、取样筒31、取样杆32、传动纹33、卸样口34、筒壁35、螺纹口36、活塞37、进样口38、盛样区39、盛样筒40、螺纹41、螺栓42、动力转换器43、固定基座44、轴承45、传送带46、基架47、传动轴48、齿轮盘49、密封圈50、齿纹51、轮齿52、轴承53、取样器54、开口55、外壳56、卡块57、卡环58、螺纹59、筒口60。The above figures have: live button 1, sealing cover 2, tank cover 3, feeding port 4, exhaust pipe 5, check valve 6, exhaust port 7, sealing ring 8, sealing ring 9, fixing bolt 10, Sealing baffle 11, observation window 12, rotating shaft 13, upper sampling port 14, runner 15, internal tooth 16, stirring tooth 17, motor 18, bottom cleaning port 19, tank body 20, hinge 21, cylinder bottom 22, middle part Sampling port 23, bottom sampling port 24, rubber ring 25, rubber ring 26, belt stirring device 27, bracket 28, groove 29, handle 30, sampling cylinder 31, sampling rod 32, transmission pattern 33, sample discharge port 34, Cylinder wall 35, threaded port 36, piston 37, sample inlet 38, sample receiving area 39, sample container 40, thread 41, bolt 42, power converter 43, fixed base 44, bearing 45, conveyor belt 46, base frame 47. Transmission shaft 48, gear plate 49, sealing ring 50, tooth pattern 51, gear teeth 52, bearing 53, sampler 54, opening 55, housing 56, clamp 57, snap ring 58, thread 59, barrel mouth 60.
具体实施方式Detailed ways
为了能够更加清楚地理解本发明的上述目的、特征和优点,下面结合附图及实施例对本发明做进一步说明。In order to be able to understand the above objectives, features and advantages of the present invention more clearly, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
参考图1-图4,本实施例提出一种重金属污染土壤修复实验装置,包括罐体、罐盖、带式搅拌装置、电机、动力转换器、取样口及取样器。Referring to Figures 1 to 4, this embodiment proposes a heavy metal contaminated soil remediation experimental device, which includes a tank, a tank cover, a belt stirring device, a motor, a power converter, a sampling port, and a sampler.
在罐体20顶端设置一个长5cm的钢制折页21,在折页21的对面设置一个高3cm厚1.5cm的钢制固定栓10,在折页21上安装一个直径100cm高15cm的钢制罐盖3,罐盖3可在折页21的作用下自由开闭,在罐盖3的下边缘设置一圈厚0.5cm的密封圈8,在罐体20的上边缘设置一圈厚0.5cm的密封圈9,密封圈8和密封圈9恰好吻合,当罐盖3处于关闭状态时,密封圈8和密封圈9可将罐体20和罐盖3进行密封;在罐盖3与固定栓10对应位置处设置一个长5cm宽3cm的钢制活扣1,活扣1与固定栓10恰好吻合,当活扣1与固定栓10 卡扣关闭时,罐体20和罐盖3密封关闭,当活扣1与固定栓10打开后,可将罐盖3绕折页21打开;在罐盖3的上部开设一个直径15cm的投料口4,设置一个直径15cm高4cm的橡胶密封盖板2用来封堵投料口4,密封盖板2和投料口4之间通过深0.1cm的螺纹41进行相对固定和密封处理,当密封盖板2通过螺纹41固定在投料口4时,罐体20内处于密封状态,当密封盖板2打开时,可通过投料口4向罐体内添加实验材料;在罐盖3的上部开设一个直径2cm的排气口7,在排气口7处安装一根内径2cm长5cm的钢制排气管5,在排气管5上安装一个长3cm宽3cm高5cm止回阀6,当罐体20内的增大到1.5个标准大气压后,罐体20内的气体可通过排气管5顺利排出,同时止回阀6可防止罐外气体进入罐体20。A steel hinge 21 with a length of 5 cm is set at the top of the tank body 20, a steel fixing bolt 10 with a height of 3 cm and a thickness of 1.5 cm is set on the opposite side of the hinge 21, and a steel hinge with a diameter of 100 cm and a height of 15 cm is installed on the hinge 21 The can lid 3, the can lid 3 can be opened and closed freely under the action of the hinge 21, a sealing ring 8 with a thickness of 0.5cm is set on the lower edge of the can lid 3, and a ring with a thickness of 0.5cm is set on the upper edge of the can body 20 The sealing ring 9, the sealing ring 8 and the sealing ring 9 are exactly the same. When the tank lid 3 is in the closed state, the sealing ring 8 and the sealing ring 9 can seal the tank body 20 and the tank lid 3; in the tank lid 3 and the fixing bolt A steel live buckle 1 with a length of 5 cm and a width of 3 cm is set at the corresponding position. The live buckle 1 and the fixing bolt 10 are exactly the same. When the live buckle 1 and the fixing bolt 10 are snap-closed, the tank body 20 and the tank lid 3 are sealed and closed. When the live button 1 and the fixing bolt 10 are opened, the can lid 3 can be opened around the hinge 21; a feeding port 4 with a diameter of 15 cm is opened on the upper part of the can lid 3, and a rubber sealing cover plate 2 with a diameter of 15 cm and a height of 4 cm is set for use To seal the feeding port 4, the sealing cover 2 and the feeding port 4 are relatively fixed and sealed by a thread 41 with a depth of 0.1 cm. When the sealing cover 2 is fixed to the feeding port 4 by the thread 41, the tank body 20 is In a sealed state, when the sealing cover 2 is opened, experiment materials can be added to the tank through the feeding port 4; an exhaust port 7 with a diameter of 2 cm is opened on the upper part of the tank cover 3, and an inner diameter is installed at the exhaust port 7. A steel exhaust pipe 5 with a length of 2cm and a length of 5cm is installed on the exhaust pipe 5 with a check valve 6 with a length of 3cm and a width of 3cm and a height of 5cm. The gas can be smoothly discharged through the exhaust pipe 5, and the check valve 6 can prevent the gas outside the tank from entering the tank body 20.
罐体内安装有带式搅拌装置27,该装置包括四个呈梯形排列的传动轴48,传动轴的外侧安装有转轮15,传送带46套装上转轮45上,传送带46纵向界面呈梯形,梯形长边靠近罐体内壁,传送带46的内侧设有与所述转轮配合的内齿,外侧设有若干搅拌齿;罐体外安装有电机18,罐体内安装有动力转换器43,电机18通过转轴驱动动力转换器带动最下方传动轴转动,进而带动传送带传动;罐体侧壁上设有取样口23,取样口上安装有取样器54。A belt-type stirring device 27 is installed in the tank. The device includes four transmission shafts 48 arranged in a trapezoid shape. A runner 15 is installed on the outside of the transmission shaft. The conveyor belt 46 is sleeved on the runner 45. The longitudinal interface of the conveyor belt 46 is trapezoidal and trapezoidal. The long side is close to the inner wall of the tank. The inner side of the conveyor belt 46 is provided with internal teeth matched with the runners, and the outer side is provided with a number of stirring teeth; a motor 18 is installed outside the tank, a power converter 43 is installed inside the tank, and the motor 18 passes through the rotating shaft. The driving power converter drives the lowermost drive shaft to rotate, and then drives the conveyor belt to drive; a sampling port 23 is provided on the side wall of the tank body, and a sampler 54 is installed on the sampling port.
本实施例罐体20为直径100cm高150cm的钢制罐体,在距离筒底22上方5cm处设置一个直径10cm的底部清洗口19,底部清洗口19通过直径10cm的橡胶密封挡板11将底部清洗口19进行密封处理,密封挡板11通过螺栓42与罐体20相固定,螺栓42可以控制密封挡板11的插入和取出,密封挡板11的插入和取出可以控制底部清洗口19的关闭和打开。The tank body 20 in this embodiment is a steel tank body with a diameter of 100 cm and a height of 150 cm. A bottom cleaning port 19 with a diameter of 10 cm is provided 5 cm above the bottom of the cylinder 22. The bottom cleaning port 19 is sealed by a rubber sealing baffle 11 with a diameter of 10 cm. The cleaning port 19 is sealed. The sealing baffle 11 is fixed to the tank body 20 by bolts 42. The bolts 42 can control the insertion and removal of the sealing baffle 11, and the insertion and removal of the sealing baffle 11 can control the closing of the bottom cleaning port 19 And open.
罐体20的侧壁上设置两个长120cm宽5cm的玻璃观察窗12,观察窗12的上端距离罐体20上边缘10cm,观察窗12的下端距离罐体 20下边缘20cm,观察窗12和罐体20进行密封处理,两个观察窗12之间的最小夹角为120°;在罐体20的侧壁上设置三个直径5cm的取样口,分别是上部取样口14、中部取样口23、底部取样口24,上部取样口14、中部取样口23、底部取样口24的圆心连线在垂直方向呈一条直线,上部取样口14罐体20上边缘10cm,中部取样口23位于罐体20的中间位置,底部取样口24距离罐体20下边缘20cm,两个观察窗12和取样口圆心连线之间的夹角为120°Two glass observation windows 12 with a length of 120 cm and a width of 5 cm are arranged on the side wall of the tank body 20. The upper end of the observation window 12 is 10 cm away from the upper edge of the tank body 20, and the lower end of the observation window 12 is 20 cm away from the lower edge of the tank body 20. The observation window 12 and The tank body 20 is sealed, and the minimum included angle between the two observation windows 12 is 120°; three sampling ports with a diameter of 5 cm are provided on the side wall of the tank body 20, namely the upper sampling port 14 and the middle sampling port 23. The bottom sampling port 24, the upper sampling port 14, the middle sampling port 23, and the bottom sampling port 24 are in a straight line in the vertical direction. The upper sampling port 14 is 10 cm from the upper edge of the tank body 20, and the middle sampling port 23 is located in the tank body 20. The bottom sampling port 24 is 20cm away from the lower edge of the tank body 20, and the angle between the two observation windows 12 and the center line of the sampling port is 120°
在上部取样口14、中部取样口23、底部取样口24中都安装一个直径4cm的钢制取样器54,取样器54与罐体20之间通过厚0.45cm的橡胶圈25进行密封,取样器54在橡胶圈25内可以自由推拉运动而不影响橡胶圈25的密封效果;在罐体20内部设置三组长70cm宽13cm的带式搅拌装置27,带式搅拌装置27通过宽4cm的钢制固定基座44固定在罐体20的内壁上,每组带式搅拌装置27中两端的固定基座44高7cm,中间的固定基座44高15cm,三组带式搅拌装置27之间的夹角为120°,且每一组带式搅拌装置27与相邻观察窗12或取样口之间的角度为60°A steel sampler 54 with a diameter of 4 cm is installed in the upper sampling port 14, the middle sampling port 23, and the bottom sampling port 24. The sampler 54 and the tank body 20 are sealed by a rubber ring 25 with a thickness of 0.45 cm. The sampler 54 The rubber ring 25 can be pushed and pulled freely without affecting the sealing effect of the rubber ring 25; three sets of belt stirring devices 27 with a length of 70 cm and a width of 13 cm are set inside the tank body 20. The belt stirring device 27 is made of steel with a width of 4 cm. The fixed base 44 is fixed on the inner wall of the tank body 20. The fixed base 44 at both ends of each group of belt stirring device 27 is 7cm high, and the middle fixed base 44 is 15cm high. The clamps between the three groups of belt stirring devices 27 The angle is 120°, and the angle between each group of belt stirring device 27 and the adjacent observation window 12 or sampling port is 60°
带式搅拌装置27包括:电机轴13、转轮15、内齿16、搅拌齿17、电机18、橡胶环26、支架28、凹槽29、动力转换器43、轴承45、传送带46和、传动轴48组成:在固定基座44的作用下,带式搅拌装置27截面呈梯形,梯形的长边一侧靠近罐体20的内壁,梯形的短边一侧远离罐体20的内壁;在每一个固定基座44的末端都安装一个外径4cm内径2cm的轴承45,在每组固定基座44的两个轴承45中都安装一根直径2cm的钢制传动轴48,在两个轴承45之间的每一个传动轴48上都固定安装一个外径3cm内径2cm长13cm的转轮15,传动轴48可在轴承45内自由转动,其中最下方的一根传动轴48与直径2cm的钢制电机轴13刚性连接,最下方的一根传动轴48是主动 轴,其余均为从动轴;转轮15的外侧设置深0.5cm凹槽29;在每一组转轮15的外侧都安装一条宽13cm厚0.6cm的传送带46,在传送带46的内侧设置高0.5cm的内齿16,在传送带46的外侧设置宽13cm高1.5cm的搅拌齿17;内齿16与凹槽29恰好吻合,在内齿16与凹槽29的作用下,转轮15与传送带46之间不会产生滑动;在每一组带式搅拌装置27的最下方的一个固定基座44上都安装一个长4cm宽4cm高4cm的钢制动力转换器43;将每一组带式搅拌装置27的最下方的一根传动轴48都通过动力转换器43与电机轴13相连,在罐体20的外壁上通过钢制支架28固定安装三组长10cm宽10cm高10cm的电机18,每一组电机18的电机轴13都穿过罐体20侧壁与动力转换器43相连,电机轴13与罐体20侧壁之间通过外径3cm内径2cm的橡胶环26进行密封处理,且电机轴13可在橡胶环26自由转动;电机18工作时带动电机轴13转动,通过动力转换器43转换转动方向后,带动传动轴48转动,传动轴48上的转轮15在内齿16与凹槽29的作用下带动传送带46运动,俯视视角下传送带46的转动方向为由罐体20内壁向罐体20中心传动,仰视视角下传送带46的转动方向为由罐体20中心向罐体20内壁传动;当传送带46在转轮15的带动下转动时,传送带46上的搅拌齿17可以带动罐体20内的实验材料相对移动,达到搅拌的目的。The belt stirring device 27 includes: a motor shaft 13, a runner 15, an inner tooth 16, a stirring tooth 17, a motor 18, a rubber ring 26, a bracket 28, a groove 29, a power converter 43, a bearing 45, a conveyor belt 46, and a transmission The shaft 48 is composed of: under the action of the fixed base 44, the cross section of the belt stirring device 27 is trapezoidal, the long side of the trapezoid is close to the inner wall of the tank 20, and the short side of the trapezoid is away from the inner wall of the tank 20; A bearing 45 with an outer diameter of 4cm and an inner diameter of 2cm is installed at the end of a fixed base 44. A steel drive shaft 48 with a diameter of 2cm is installed in the two bearings 45 of each fixed base 44, and a steel transmission shaft 48 with a diameter of 2cm is installed on the two bearings 45. A runner 15 with an outer diameter of 3cm and an inner diameter of 2cm and a length of 13cm is fixedly installed on each drive shaft 48 in between. The drive shaft 48 can rotate freely in the bearing 45. The lowermost drive shaft 48 is connected to a steel with a diameter of 2cm. The motor shaft 13 is rigidly connected, the bottom drive shaft 48 is the driving shaft, and the rest are driven shafts; the outer side of the runner 15 is provided with a 0.5 cm deep groove 29; the outer side of each group of runners 15 is installed A conveyor belt 46 with a width of 13 cm and a thickness of 0.6 cm is provided with internal teeth 16 with a height of 0.5 cm on the inner side of the conveyor belt 46, and stirring teeth 17 with a width of 13 cm and a height of 1.5 cm are provided on the outer side of the conveyor belt 46; Under the action of the internal teeth 16 and the groove 29, there will be no sliding between the runner 15 and the conveyor belt 46; a fixed base 44 at the bottom of each group of belt stirring devices 27 is installed with a length of 4 cm and a width of 4 cm. A steel power converter 43 with a height of 4cm and 4cm; the lowermost drive shaft 48 of each group of belt stirring devices 27 is connected to the motor shaft 13 through the power converter 43, and the outer wall of the tank body 20 is passed through steel The bracket 28 is fixedly installed with three groups of motors 18 with a length of 10 cm, a width of 10 cm and a height of 10 cm. The motor shaft 13 of each group of motors 18 passes through the side wall of the tank body 20 and is connected to the power converter 43, and the motor shaft 13 is connected to the side wall of the tank body 20. The rubber ring 26 with an outer diameter of 3cm and an inner diameter of 2cm is used for sealing treatment, and the motor shaft 13 can rotate freely on the rubber ring 26; when the motor 18 is working, the motor shaft 13 is driven to rotate, and the rotation direction is changed by the power converter 43 to drive the transmission The shaft 48 rotates, and the runner 15 on the transmission shaft 48 drives the conveyor belt 46 to move under the action of the internal teeth 16 and the groove 29. The direction of rotation of the conveyor belt 46 is from the inner wall of the tank body 20 to the center of the tank body 20 when viewed from the bottom. From the viewing angle, the direction of rotation of the conveyor belt 46 is to drive from the center of the tank body 20 to the inner wall of the tank body 20; when the conveyor belt 46 rotates under the drive of the runner 15, the stirring teeth 17 on the conveyor belt 46 can drive the experimental materials in the tank body 20 to face each other. Move to achieve the purpose of stirring.
参考图8-图10动力转换器43由基架47、齿轮盘49、密封圈50、螺纹51、轮齿52、轴承53、开口55和外壳56组成:设置一个长4cm宽4cm高4cm的钢制外壳56,在外壳56的一个侧面上设置一个直径3cm的圆形开口55,电机轴13穿过开口55伸入外壳56内部,在电机轴13和开口55之间设置一个外径3cm内径2cm的密封圈50,电机轴13可在密封圈50内自由转动;在靠近开口55和电机轴13末端位置处都设置一个宽3cm高3cm的钢制基架47,在每一个基架47的 一端安装一个内径1.5cm的轴承53,通过基架47将电机轴13固定在外壳56内壁上,但电机轴13通过轴承53可以自由转动;在电机轴13末端的基架47一端的电机轴13上设置一段长3cm深0.5cm的螺纹51;在外壳56筒壁上方开设一个直径3cm的圆形开口55,传动轴48恰好穿过开口55伸入外壳56内部,在传动轴48和开口55之间设置一个外径3cm内径2cm的密封圈50,传动轴48可在密封圈50内自由转动;在外壳56内部传动轴48的一端刚性安装一个直径2.5cm高2cm的齿轮盘49,传动轴48的齿轮盘49在外壳56内恰好与电机轴13相接触。在靠近齿轮盘49的位置处通过基架47将传动轴48固定在外壳56内壁上,但传动轴48通过轴承53可以自由转动;在齿轮盘49外侧设置深0.5cm的轮齿52,轮齿52和螺纹51恰好吻合,当电机轴13转动时,通过轮齿52和螺纹51的作用带动齿轮盘49转动,进而通过齿轮盘49带动传动轴48转动。Refer to Figure 8-10. The power converter 43 is composed of a base frame 47, a gear plate 49, a sealing ring 50, a thread 51, a gear tooth 52, a bearing 53, an opening 55 and a housing 56: a steel with a length of 4cm, a width of 4cm and a height of 4cm is set The housing 56 is made. A circular opening 55 with a diameter of 3 cm is provided on one side of the housing 56. The motor shaft 13 passes through the opening 55 and extends into the housing 56. An outer diameter of 3 cm and an inner diameter of 2 cm are provided between the motor shaft 13 and the opening 55. In the sealing ring 50, the motor shaft 13 can rotate freely in the sealing ring 50; a steel base frame 47 with a width of 3cm and a height of 3cm is set near the opening 55 and the end of the motor shaft 13, at one end of each base frame 47 Install a bearing 53 with an inner diameter of 1.5 cm, and fix the motor shaft 13 on the inner wall of the housing 56 through the base frame 47, but the motor shaft 13 can freely rotate through the bearing 53; on the motor shaft 13 at the end of the base frame 47 at the end of the motor shaft 13 A thread 51 with a length of 3cm and a depth of 0.5cm is provided; a circular opening 55 with a diameter of 3cm is opened above the cylinder wall of the housing 56, and the transmission shaft 48 just passes through the opening 55 and extends into the housing 56 between the transmission shaft 48 and the opening 55 A sealing ring 50 with an outer diameter of 3cm and an inner diameter of 2cm is set, and the transmission shaft 48 can rotate freely in the sealing ring 50; a gear disc 49 with a diameter of 2.5cm and a height of 2cm is rigidly installed at one end of the transmission shaft 48 inside the housing 56. The gear plate 49 is just in contact with the motor shaft 13 in the housing 56. The drive shaft 48 is fixed on the inner wall of the housing 56 through the base frame 47 at a position close to the gear plate 49, but the drive shaft 48 can be freely rotated through the bearing 53; gear teeth 52 with a depth of 0.5 cm are provided on the outside of the gear plate 49. 52 and the thread 51 are exactly the same. When the motor shaft 13 rotates, the gear wheel 49 is driven to rotate by the action of the gear teeth 52 and the thread 51, and then the transmission shaft 48 is driven to rotate through the gear wheel 49.
参考图图5-图7,取样器54由把手30、取样筒31、取样杆32、传动纹33、卸样口34、筒壁35、螺纹口36、活塞37、进样口38、盛样筒40、卡块57、卡环58、螺纹59和筒口60组成:设置一个长55cm直径4cm的钢制取样筒31,在取样筒31的上部两端都设置一个长1cm宽1cm高1cm的钢制卡块57,取样筒31穿过橡胶圈25进入罐体20内部,取样筒31在橡胶圈25内可以自由推拉运动而不影响橡胶圈25的密封效果,取样筒31两端的卡块57可以控制取样筒的推拉运动极限位置;在取样筒31位于罐体20内部的一端设置一个直径4cm的筒口60,在取样筒31远离筒口60一端的下方设置一个长4cm宽4cm的卸样口34,在取样筒31内部设置一个直径4cm长4cm的钢制盛样筒40,在盛样筒40的下方设置一个长4cm宽4cm的进样口38,卸样口34与进样口38可恰好重合;在盛样筒40两侧外壁上都设置一层直径4cm厚1cm的橡胶活塞37,活塞37可在取样筒31 内水平运动并能起到密封作用;在取样筒31筒壁35的圆心位置处设置一个直径0.6cm的螺纹口36,螺纹口36内设深0.05cm的螺纹59;设置一根长60cm直径0.7cm的钢制取样杆32,在取样杆32设置长50cm深0.05cm的传动纹33,传动纹33和螺纹59恰好吻合,当取样杆32转动时,在传动纹33和螺纹59的作用下可实现取样杆32和筒壁35之间的相对运动;将取样杆32在取样筒31内部的一端与盛样筒40刚性连接,在取样杆32位于取样筒31外部的一端设置一根长10cm直径1.5cm的钢制把手30;在取样杆32距离把手30的5cm设置一个直径2cm宽0.2cm的钢制卡环58,卡环58可控制取样杆32向取样筒31内部的延伸极限,以确保至少有一个活塞37始终在取样筒31内,从而起到密封效果。实验取样操作时,将取样筒31推进至需要取样的位置,通过拧动把手30,在传动纹33和螺纹59的作用下将盛样筒40推送出筒口60,罐体20内的实验样品在重力的作用下被挤压到盛样筒40的盛样区39内;反向拧动把手30,在传动纹33和螺纹59的作用下将盛样筒40拉至罐体20外部,卸样口34与进样口38恰好重合,盛样区39内的实验样品在自身重力的作用下,经卸样口34得到收集处理并完成取样操作,整个取样过程罐体20内部与外界空气始终处于相对密封状态,外界空气无法进入罐体20内部。Referring to Figures 5-7, the sampler 54 consists of a handle 30, a sampling cylinder 31, a sampling rod 32, a transmission pattern 33, a sample discharge port 34, a cylinder wall 35, a threaded port 36, a piston 37, a sample inlet 38, and a sample holder. The cylinder 40, the clamp 57, the snap ring 58, the thread 59 and the cylinder mouth 60 are composed of: a steel sampling cylinder 31 with a length of 55 cm and a diameter of 4 cm is set, and a steel sampling cylinder 31 with a length of 1 cm and a width of 1 cm is set on both ends of the sampling cylinder 31. The clamping block 57, the sampling cylinder 31 passes through the rubber ring 25 and enters the inside of the tank body 20. The sampling cylinder 31 can freely push and pull in the rubber ring 25 without affecting the sealing effect of the rubber ring 25. The clamping blocks 57 at both ends of the sampling cylinder 31 can Control the extreme position of the push-pull movement of the sampling cylinder; a cylinder mouth 60 with a diameter of 4 cm is provided at the end of the sampling cylinder 31 located inside the tank body 20, and a sample discharge port 34 with a length of 4 cm and a width of 4 cm is provided under the end of the sampling cylinder 31 away from the cylinder mouth 60. A steel sample container 40 with a diameter of 4 cm and a length of 4 cm is arranged in the sampling cylinder 31, and a sample inlet 38 with a length of 4 cm and a width of 4 cm is arranged below the sample container 40. The sample discharge port 34 and the sample inlet 38 can coincide exactly ; A layer of rubber pistons 37 with a diameter of 4cm and a thickness of 1cm are arranged on the outer walls of the sample cylinder 40. The piston 37 can move horizontally in the sampling cylinder 31 and can play a sealing role; at the center of the cylinder wall 35 of the sampling cylinder 31 A threaded port 36 with a diameter of 0.6cm is set in the threaded port 36, a thread 59 with a depth of 0.05cm is set in the threaded port 36; a steel sampling rod 32 with a length of 60cm and a diameter of 0.7cm is set, and a transmission with a length of 50cm and a depth of 0.05cm is set on the sampling rod 32 The pattern 33, the transmission pattern 33 and the thread 59 are exactly the same. When the sampling rod 32 rotates, the relative movement between the sampling rod 32 and the cylinder wall 35 can be realized under the action of the transmission pattern 33 and the thread 59; The inner end of the cylinder 31 is rigidly connected with the sample holding cylinder 40. A steel handle 30 with a length of 10 cm and a diameter of 1.5 cm is set at the end of the sampling rod 32 outside the sampling cylinder 31; a diameter of the sampling rod 32 is 5 cm from the handle 30. A steel snap ring 58 with a width of 2 cm and a width of 0.2 cm can control the extension limit of the sampling rod 32 toward the inside of the sampling barrel 31 to ensure that at least one piston 37 is always in the sampling barrel 31, thereby achieving a sealing effect. During the experimental sampling operation, the sampling cylinder 31 is pushed to the position where sampling is required, and the sample cylinder 40 is pushed out of the cylinder mouth 60 by the screw handle 30 under the action of the transmission pattern 33 and the thread 59. The test sample in the tank body 20 is It is squeezed into the sample holding area 39 of the sample holding cylinder 40 under the action of gravity; the handle 30 is reversely twisted, and the sample holding cylinder 40 is pulled to the outside of the tank body 20 under the action of the transmission pattern 33 and the thread 59, and the sample is unloaded The port 34 coincides with the sample inlet 38. The experimental sample in the sample holding area 39 is collected and processed through the sample discharge port 34 under the action of its own gravity, and the sampling operation is completed. The interior of the tank body 20 and the outside air are always in contact with the outside air during the entire sampling process. In a relatively sealed state, outside air cannot enter the inside of the tank 20.
本实施例实验装置工作时,实验前,打开罐盖3将实验原料放入罐体20内,开动电机18带动带式搅拌装置27转动,在搅拌齿17和实验原料自身重力的作用下,实现自上向下、由罐体中心向罐体内壁的循环搅拌运动;搅拌过程中可通过短暂开启投料口4的密封盖板2进行加料操作;排气管5和止回阀6可将实验反应过程产生的过量气体排出,维持管内气压稳定,同时也可以防止罐外气体进入罐体20,维持罐体20内的相对厌氧环境;实验过程中需要取样时,将取样筒 31推进至需要取样的位置,通过拧动把手30,在传动纹33和螺纹59的作用下将盛样筒40推送出筒口60,罐体20内的实验样品在重力的作用下被挤压到盛样筒40的盛样区39内;反向拧动把手30,在传动纹33和螺纹59的作用下将盛样筒40拉至罐体20外部,卸样口34与进样口38恰好重合,盛样区39内的实验样品在自身重力的作用下,经卸样口34得到收集处理并完成取样操作,整个取样过程罐体20内部与外界空气始终处于相对密封状态,外界空气无法进入罐体20内部。实验完成后,打开罐体20底部的密封挡板11,将实验废料和清洗废水通过底部清洗口19排出收集,并按照对应操作规程做进一步处理。When the experimental device of this embodiment is working, before the experiment, open the lid 3 to put the experimental materials into the tank body 20, and turn on the motor 18 to drive the belt-type stirring device 27 to rotate. Under the action of the stirring teeth 17 and the gravity of the experimental raw materials, it is realized Circulating stirring movement from top to bottom, from the center of the tank to the inner wall of the tank; during the stirring process, the sealing cover 2 of the feeding port 4 can be opened for feeding operation; the exhaust pipe 5 and the check valve 6 can react the experiment Excessive gas generated during the process is discharged to keep the pressure in the pipe stable, and at the same time, it can prevent the gas outside the tank from entering the tank body 20 and maintain the relatively anaerobic environment in the tank body 20; when sampling is required during the experiment, the sampling cylinder 31 is pushed to the point where sampling is required By twisting the handle 30, the sample container 40 is pushed out of the cylinder mouth 60 under the action of the transmission pattern 33 and the thread 59, and the experimental sample in the tank body 20 is squeezed into the sample container 40 under the action of gravity. In the sample holding area 39; turn the handle 30 in the reverse direction, and pull the sample holding cylinder 40 to the outside of the tank body 20 under the action of the transmission pattern 33 and the thread 59. The sample discharge port 34 and the sample inlet 38 coincide exactly, the sample holding area The experimental samples in 39 are collected and processed through the sample discharge port 34 under the action of their own gravity, and the sampling operation is completed. The interior of the tank 20 and the outside air are always in a relatively sealed state during the entire sampling process, and the outside air cannot enter the inside of the tank 20. After the experiment is completed, the sealing baffle 11 at the bottom of the tank body 20 is opened, and the experimental waste and cleaning wastewater are discharged through the bottom cleaning port 19 for collection, and further processed in accordance with the corresponding operating procedures.
以上所述,仅是本发明的较佳实施例而已,并非是对本发明作其它形式的限制,任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例应用于其它领域,但是凡是未脱离本发明技术方案内容,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与改型,仍属于本发明技术方案的保护范围。The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person familiar with the profession may use the technical content disclosed above to change or modify the equivalent of equivalent changes. The embodiments are applied to other fields, but any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention still fall within the protection scope of the technical solutions of the present invention.

Claims (8)

  1. 一种重金属污染土壤修复实验装置,包括罐体及罐盖,其特征在于还包括:An experimental device for remediation of heavy metal contaminated soil, including a tank body and a tank cover, and is characterized in that it also includes:
    带式搅拌装置,位于罐体内,包括四个呈梯形排列的传动轴,传动轴的外侧安装有转轮,传送带套装上所述转轮上,传送带纵向界面呈梯形,梯形长边靠近罐体内壁,传送带的内侧设有与所述转轮配合的内齿,外侧设有若干搅拌齿;The belt-type stirring device is located in the tank and includes four drive shafts arranged in a trapezoid shape. The outer side of the drive shaft is equipped with a runner. The conveyor belt is sleeved on the runner. The longitudinal interface of the conveyor belt is trapezoidal, and the long side of the trapezoid is close to the inner wall of the tank. , The inner side of the conveyor belt is provided with internal teeth matched with the runner, and the outer side is provided with a number of stirring teeth;
    驱动装置,包括安装在罐体外的电机及位于罐体内的动力转换器,电机通过转轴驱动动力转换器带动最下方传动轴转动,进而带动传送带传动;The driving device includes a motor installed outside the tank and a power converter located in the tank. The motor drives the power converter through the rotating shaft to drive the lowermost transmission shaft to rotate, thereby driving the conveyor belt to drive;
    取样口,开在罐体侧壁上,取样口上安装有取样器。The sampling port is opened on the side wall of the tank, and a sampler is installed on the sampling port.
  2. 根据权利要求1所述的重金属污染土壤修复实验装置,其特征在于:所述动力转换器包括壳体,所述转轴横向伸入所述壳体内,转轴上设有齿纹,壳体内安装有与所述齿纹啮合的齿轮盘,所述最下方传动轴纵向伸入所述壳体中,刚性安装在所述齿轮盘上。The experimental device for remediation of heavy metal contaminated soil according to claim 1, wherein the power converter comprises a housing, the rotating shaft extends laterally into the housing, the rotating shaft is provided with tooth lines, and the housing is installed with For the gear plate with the toothed mesh, the lowermost transmission shaft extends longitudinally into the housing and is rigidly mounted on the gear plate.
  3. 根据权利要求1或2所述的重金属污染土壤修复实验装置,其特征在于:所述取样器包括取样筒,位于取样筒内的取样杆,取样杆上设有传动纹,一端伸出取样筒连接把手,另一段连接活塞,取样筒一端开有进样口,另一段开有卸样口。The experimental device for remediation of heavy metal contaminated soil according to claim 1 or 2, characterized in that: the sampler comprises a sampling cylinder, a sampling rod located in the sampling cylinder, the sampling rod is provided with a transmission pattern, and one end extends out of the sampling cylinder to connect The handle, the other section is connected to the piston, one end of the sampling cylinder is provided with a sample inlet, and the other section is provided with a sample unloading port.
  4. 根据权利要求3所述的重金属污染土壤修复实验装置,其特征在于:所述取样口包括上、中、下三个。The experimental device for remediation of heavy metal contaminated soil according to claim 3, characterized in that the sampling ports include upper, middle and lower three.
  5. 根据权利要求3所述的重金属污染土壤修复实验装置,其特征在于:所述取样筒壁上设有两个卡块。The experimental device for remediation of heavy metal contaminated soil according to claim 3, wherein two blocking blocks are provided on the wall of the sampling cylinder.
  6. 根据权利要求1所述的重金属污染土壤修复实验装置,其特征在于:所述罐体上设有玻璃观察窗。The experimental device for remediation of heavy metal contaminated soil according to claim 1, wherein a glass observation window is provided on the tank body.
  7. 根据权利要求1所述的重金属污染土壤修复实验装置,其特征在于:所述带式搅拌装置的个数为3个,两两之间夹角为120度。The experimental device for remediation of heavy metal contaminated soil according to claim 1, wherein the number of the belt-type stirring device is 3, and the angle between the two is 120 degrees.
  8. 根据权利要求1所述的重金属污染土壤修复实验装置,其特征在于:所述罐体底部设有清洁口,所述清洁口上安装有密封挡板。The experimental device for remediation of heavy metal contaminated soil according to claim 1, wherein the bottom of the tank is provided with a cleaning port, and a sealing baffle is installed on the cleaning port.
PCT/CN2020/079381 2019-11-14 2020-03-14 Heavy metal contaminated soil remediation experimental device WO2021093237A1 (en)

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