CN108212284B - A kind of prosthetic device of As polluted soil - Google Patents
A kind of prosthetic device of As polluted soil Download PDFInfo
- Publication number
- CN108212284B CN108212284B CN201711391693.1A CN201711391693A CN108212284B CN 108212284 B CN108212284 B CN 108212284B CN 201711391693 A CN201711391693 A CN 201711391693A CN 108212284 B CN108212284 B CN 108212284B
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- China
- Prior art keywords
- bevel gear
- fixedly connected
- screw rod
- pressure roller
- material storing
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C1/00—Crushing or disintegrating by reciprocating members
- B02C1/14—Stamping mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
- B01F27/71—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with propellers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09C—RECLAMATION OF CONTAMINATED SOIL
- B09C1/00—Reclamation of contaminated soil
- B09C1/08—Reclamation of contaminated soil chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
- B02C23/16—Separating or sorting of material, associated with crushing or disintegrating with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material
- B02C2023/165—Screen denying egress of oversize material
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Cultivation Of Plants (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of prosthetic devices of As polluted soil, semicircle bevel gear toothed portion engages first bevel gear, and material storing box is arranged in upper end on the left of device noumenon, first bevel gear lower end is fixedly connected with screw rod upper end, screw axis holds rotary connecting device ontology upper end, and screw rod l lower thread connects sleeve, and sleeve two sides are slidably connected guide groove, guide groove is fixedly connected with material storing box side wall, and sleeve lower end is fixedly connected with pressure roller；The material storing box bottom is connected to passage, and second bevel gear is fixedly connected on the right side of driving shaft, and second bevel gear engages third hand tap gear.The device drives the reciprocal positive and negative rotation of first bevel gear that screw rod is driven to follow positive and negative rotation by semicircle bevel gear toothed portion, screw rod band moving sleeve under threaded function back and forth moves up and down along guide groove and then pressure roller is driven to move up and down, the pressure roller back and forth moved up and down drives stick harness back and forth to block passage and realizes intermittent blanking, and the pressure roller moved up and down simultaneously crushes the soil block of material storing box bottom.
Description
Technical field
The present invention relates to a kind of environmental protecting device, the prosthetic device of specifically a kind of As polluted soil.
Background technique
Soil pollutant is broadly divided into inorganic pollution and organic pollutant two major classes.Inorganic pollution mainly includes
Acid, alkali, heavy metal, salt, radioactive element caesium, the compound of strontium, containing arsenic, selenium, compound of fluorine etc..Organic pollutant is main
Including organic agricultural chemicals, phenols, cyanide, petroleum, synthetic detergent, 3,4- BaP and by municipal sewage, sludge and barnyard manure
Bring harmful microorganism etc..It is excessive when containing hazardous substance in soil, more than the self-purification capacity of soil, the group of soil will be caused
It changes at, structure and function, microbial activities is suppressed, and harmful substance or its decomposition product gradually accumulate in the soil
It is absorbed by the body indirectly by " soil → plant → human body ", or by " soil → water → human body ", reaches and be detrimental to health
Degree, be exactly soil pollution.
It is often used organic fertilizer chemical modifying soil generally for the soil of arsenic pollution, for As polluted soil, can be applied
Fe2(SO4)3And MgCl2Equal indissolubles object reduces the harm of arsenic.
Existing As polluted soil is administered mostly by manually administering at present, and mechanization degree is low, and soil crushes and soil
Earth and fertilizer mixed effect are bad.
Summary of the invention
The purpose of the present invention is to provide a kind of prosthetic devices of As polluted soil, to solve to propose in above-mentioned background technique
The problem of.
To achieve the above object, the invention provides the following technical scheme:
A kind of prosthetic device of As polluted soil, including device noumenon；Described device ontology is mainly by motor, half-conical
Gear, screw rod, pressure roller, cover board, transport roller, third hand tap gear and eccentric turntable are constituted, and described device ontology upper end is fixedly connected
Motor, motor right side are rotatablely connected driving shaft, and both ends are fixedly connected with semicircle bevel gear, two semicircle bevel gears point on the left of driving shaft
Not Wei Yu at left and right sides of first bevel gear, two semicircle bevel gear half half with teeth are anodontia, left and right sides semicircle bevel gear phase
It is mutually staggered and semicircle bevel gear toothed portion engages first bevel gear (5), and material storing box is arranged in upper end on the left of device noumenon, the
One bevel gear lower end is fixedly connected with screw rod upper end, and screw axis holds rotary connecting device ontology upper end, screw rod l lower thread connector sleeve
Cylinder, sleeve two sides are slidably connected guide groove, and guide groove is fixedly connected with material storing box side wall, and sleeve lower end is fixedly connected with pressure roller；It is described
Material storing box bottom is connected to passage, and second bevel gear is fixedly connected on the right side of driving shaft, and second bevel gear engages third hand tap gear, the
Third hand tap gear is fixedly connected with driven shaft, setting fertilizer box in upper end on the right side of device noumenon, fertilizer box fixed connection apparatus ontology, and from
Moving axis bearing is rotatablely connected fertilizer box；The driven shaft lower part is fixedly connected with stirring rod, and driven shaft lower end is fixedly connected with eccentric turn
Disk, circumferentially conduit is arranged in setting through-hole, fertilizer box bottom to eccentric turntable, and the through-hole on the eccentric turntable of rotation is back and forth connected to fertilizer
The conduit in bottom portion, so that the opening that fertilizer interval falls into upper end on the left of mixing tank enters in mixing tank, and eccentric turntable is left
Side abuts sieve plate, sieve plate, plug assembly ontology, and sieve plate left end is slidably connected cage plate, spring is arranged in cage plate, sieve plate abuts bullet
Cover board, cover board articulated mounting ontology is arranged in spring, sieve plate left side, and bolt is arranged in cover board lower end, and lower end setting mixes on the right side of device noumenon
Mould assembling, mixing tank is interior to be rotatablely connected transport roller, and transport roller is rotatablely connected the second motor, and upper end setting is open on the left of mixing tank, institute
It states device noumenon lower end two sides and is fixedly connected with supporting leg.
As a further solution of the present invention: the material storing box upper end is connected to feed inlet.
As further scheme of the invention: the pressure roller lower end is fixedly connected with stick harness, the pressure roller back and forth moved up and down
It drives stick harness back and forth to block passage and realizes intermittent blanking.
As further scheme of the invention: the electrical connection of motor power supply and switch.
As further scheme of the invention: the fertilizer box upper end is connected to feed opening.
As further scheme of the invention: the mixing tank right end is connected to drainage conduit.
Compared with prior art, the beneficial effects of the present invention are: the device drives the by semicircle bevel gear toothed portion
The reciprocal positive and negative rotation of one bevel gear and then drive screw rod follow positive and negative rotation, and screw rod band moving sleeve under threaded function is reciprocal along guiding
Slot up and down motion and then driving pressure roller up and down motion, between the pressure roller back and forth moved up and down drives stick harness back and forth to block passage realization
It has a rest blanking, the pressure roller moved up and down simultaneously crushes the soil block of material storing box bottom.Apparatus structure design is rationally applicable in, greatly
Soil crush efficiency is improved greatly, the pollution problem of arsenic in soil is efficiently solved by being sufficiently mixed organic fertilizer.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the prosthetic device of As polluted soil.
Fig. 2 is the top view of eccentric turntable in the prosthetic device of As polluted soil.
Fig. 3 is the prosthetic device cover plate of As polluted soil and the structural schematic diagram of bolt.
In figure: 1- device noumenon；2- motor；3- driving shaft；4- semicircle bevel gear；5- first bevel gear；6- screw rod；7- storage
Hopper；8- sleeve；9- feed inlet；10- pressure roller；11- guide groove；12- passage；13- cover board；14- bolt；15- sieve plate；16-
Transport roller；17- second bevel gear；18- third hand tap gear；19- driven shaft；20- fertilizer box；21- feed opening；22- stirring rod；
23- bias turntable；24- drainage conduit；25- supporting leg.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Please refer to Fig. 1~3, in the embodiment of the present invention, a kind of prosthetic device of As polluted soil, including device noumenon 1；Institute
Device noumenon 1 is stated mainly by motor 2, semicircle bevel gear 4, screw rod 6, pressure roller 10, cover board 13, transport roller 16, third hand tap gear
18 are constituted with eccentric turntable 23；1 upper end of described device ontology is fixedly connected with motor 2, and motor 2 is electrically connected power supply and switch, electricity
Driving shaft 3 is rotatablely connected on the right side of machine 2,3 left side both ends of driving shaft are fixedly connected with semicircle bevel gear 4, and two semicircle bevel gears 4 are distinguished
Positioned at 5 left and right sides of first bevel gear, two 4 half of semicircle bevel gear half with teeth are anodontia, 4 phase of left and right sides semicircle bevel gear
It is mutually staggered and 4 toothed portion of semicircle bevel gear engages first bevel gear 5, and material storing box 7, storage is arranged in 1 left side upper end of device noumenon
7 upper end of hopper is connected to feed inlet 9, and 5 lower end of first bevel gear is fixedly connected with 6 upper end of screw rod, 6 bearing rotary connecting device sheet of screw rod
1 upper end of body, 6 lower thread of screw rod connect sleeve 8, and 8 two sides of sleeve are slidably connected guide groove 11, and guide groove 11 is fixedly connected with storing
7 side wall of case, 8 lower end of sleeve are fixedly connected with pressure roller 10, turn on the switch and rotate the energization driving driving shaft 3 of motor 2,3 band of driving shaft
Dynamic two sides semicircle bevel gear 4 rotates, and 4 toothed portion of semicircle bevel gear drives the reciprocal positive and negative rotation of first bevel gear 5 and then drives
Screw rod 6 follows positive and negative rotation, and the band moving sleeve 8 under threaded function of screw rod 6 moves up and down toward complex edge guide groove 11 and then drives pressure roller
10 move up and down；7 bottom of material storing box is connected to passage 12, and 10 lower end of pressure roller is fixedly connected with stick harness, fixes on the right side of driving shaft 3
Second bevel gear 17 is connected, second bevel gear 17 engages third hand tap gear 18, and third hand tap gear 18 is fixedly connected with driven shaft 19, fills
1 right side upper end of ontology setting fertilizer box 20,20 fixed connection apparatus ontology 1 of fertilizer box are set, and 19 bearing of driven shaft is rotatablely connected
Fertilizer box 20,20 upper end of fertilizer box are connected to feed opening 21, and the pressure roller 10 back and forth moved up and down drives stick harness back and forth to block passage
12 realize intermittent blankings, and the pressure roller 10 moved up and down simultaneously crushes the soil block of 7 bottom of material storing box, and driving shaft 3 drives the
Two bevel gears 17 rotate and then third hand tap gear 18 are driven to rotate, and third hand tap gear 18 drives driven shaft 19 to rotate.
19 lower part of driven shaft is fixedly connected with stirring rod 22, and 19 lower end of driven shaft is fixedly connected with eccentric turntable 23, eccentric
The circumferential setting through-hole of turntable 23, conduit is arranged in 20 bottom of fertilizer box, and sieve plate 15 is abutted on the left of eccentric turntable 23, and sieve plate 15 is inserted
Connection device ontology 1,15 left end of sieve plate are slidably connected cage plate, and spring is arranged in cage plate, and sieve plate 15 abuts spring, sets on the left of sieve plate 15
Cover board 13,13 articulated mounting ontology 1 of cover board are set, bolt 14, the setting mixing of 1 right side lower end of device noumenon is arranged in 13 lower end of cover board
Case, mixing tank is interior to be rotatablely connected transport roller 16, and transport roller 16 is rotatablely connected the second motor, and upper end setting is open on the left of mixing tank,
Mixing tank right end is connected to drainage conduit 24, and 1 lower end two sides of device noumenon are fixedly connected with supporting leg 25, and the driven shaft 19 of rotation drives stirring
Fertilizer in the rotation stirring fertilizer box 20 of stick 22 prevents from uniting not fall, and the through-hole on the eccentric turntable 23 of rotation is back and forth connected to fertilizer
The conduit of 20 bottom of hopper, so that the opening that fertilizer interval falls into upper end on the left of mixing tank enters in mixing tank, while eccentric
23 eccentric rotary of turntable drives sieve plate 15 back and forth to move left and right the smashed soil of screening, crushes qualified soil and falls into device sheet
1 bottom of body enters in turn in mixing tank to be mixed with fertilizer, the drive soil of transport roller 16 and fertilizer of rotation be sufficiently mixed after by arranging
Expects pipe 24 is discharged, and crushes incomplete soil and takes out after opening bolt 14 and cover board 13 and crushes again.
The working principle of the invention is: turning on the switch and rotates the energization driving driving shaft 3 of motor 2, driving shaft 3 drives two sides
Semicircle bevel gear 4 rotate, 4 toothed portion of semicircle bevel gear drive the reciprocal positive and negative rotation of first bevel gear 5 so that drive screw rod 6 with
With positive and negative rotation, the band moving sleeve 8 under threaded function of screw rod 6 moves up and down toward complex edge guide groove 11 and then about 10 pressure roller is driven to transport
Dynamic, the pressure roller 10 back and forth moved up and down drives stick harness back and forth to block passage 12 and realizes intermittent blanking, the pressure moved up and down simultaneously
Roller 10 crushes the soil block of 7 bottom of material storing box, and driving shaft 3 drives second bevel gear 17 to rotate and then drives third hand tap gear
18 rotations, third hand tap gear 18 drive driven shaft 19 to rotate, and the driven shaft 19 of rotation drives the rotation stirring fertilizer box of stirring rod 22
Fertilizer in 20 prevents from uniting not fall, and the through-hole on the eccentric turntable 23 of rotation is back and forth connected to the conduit of 20 bottom of fertilizer box,
So that the opening that fertilizer interval falls into upper end on the left of mixing tank enters in mixing tank, while eccentric 23 eccentric rotary of turntable drives
Sieve plate 15 back and forth moves left and right the smashed soil of screening, crushes qualified soil and falls into 1 bottom of device noumenon and then enter mixed
It is mixed in mould assembling with fertilizer, the transport roller 16 of rotation is discharged after driving soil and fertilizer to be sufficiently mixed by drainage conduit 24, is crushed not
Complete soil takes out after opening bolt 14 and cover board 13 to be crushed again.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (5)
1. a kind of prosthetic device of As polluted soil, including device noumenon (1)；Described device ontology (1) is mainly by motor
(2), semicircle bevel gear (4), screw rod (6), pressure roller (10), cover board (13), transport roller (16), third hand tap gear (18) and eccentric turn
Disk (23) is constituted, which is characterized in that described device ontology (1) upper end is fixedly connected motor (2), rotation connection on the right side of motor (2)
Driving shaft (3), both ends are fixedly connected semicircle bevel gear (4) on the left of driving shaft (3), and two semicircle bevel gears (4) are located at the
At left and right sides of one bevel gear (5), two semicircle bevel gear (4) half half with teeth are anodontia, the left and right sides semicircle bevel gear (4) phase
It is mutually staggered and semicircle bevel gear (4) toothed portion engages first bevel gear (5), and storing is arranged in upper end on the left of device noumenon (1)
Case (7), first bevel gear (5) lower end are fixedly connected with screw rod (6) upper end, on screw rod (6) bearing rotary connecting device ontology (1)
End, screw rod (6) lower thread connect sleeve (8), and sleeve (8) two sides are slidably connected guide groove (11), and guide groove (11) is fixed to be connected
Material storing box (7) side wall is connect, sleeve (8) lower end is fixedly connected pressure roller (10), and pressure roller (10) lower end is fixedly connected with stick harness, back and forth
The pressure roller (10) moved up and down drives stick harness back and forth to block passage (12) and realizes intermittent blanking；Material storing box (7) bottom connects
Admittance expects pipe (12), driving shaft (3) right side are fixedly connected second bevel gear (17), and second bevel gear (17) engages third hand tap gear
(18), third hand tap gear (18) is fixedly connected driven shaft (19), upper end setting fertilizer box (20), fertilizer on the right side of device noumenon (1)
Case (20) fixed connection apparatus ontology (1), and driven shaft (19) bearing rotation connection fertilizer box (20)；Under the driven shaft (19)
Portion is fixedly connected stirring rod (22), and driven shaft (19) lower end is fixedly connected eccentric turntable (23), and eccentric turntable (23) is circumferentially arranged
Conduit is arranged in through-hole, fertilizer box (20) bottom, and the through-hole on the eccentric turntable (23) of rotation is back and forth connected to fertilizer box (20) bottom
Conduit so that the opening that fertilizer interval falls into upper end on the left of mixing tank enters in mixing tank, and on the left of eccentric turntable (23)
It abutting sieve plate (15), sieve plate (15) plug assembly ontology (1), sieve plate (15) left end is slidably connected cage plate, spring is set in cage plate,
Sieve plate (15) abuts spring, and cover board (13) are arranged on the left of sieve plate (15), cover board (13) articulated mounting ontology (1), under cover board (13)
End setting bolt (14), device noumenon (1) right side lower end are arranged mixing tank, are rotatablely connected transport roller (16) in mixing tank, transport
Roller (16) is rotatablely connected the second motor, and setting opening in upper end on the left of mixing tank, described device ontology (1) lower end two sides are fixedly connected
Supporting leg (25).
2. a kind of prosthetic device of As polluted soil according to claim 1, which is characterized in that on the material storing box (7)
End connection feed inlet (9).
3. a kind of prosthetic device of As polluted soil according to claim 1, which is characterized in that the motor (2) is electrically
Connect power supply and switch.
4. a kind of prosthetic device of As polluted soil according to claim 1, which is characterized in that on the fertilizer box (20)
End connection feed opening (21).
5. a kind of prosthetic device of As polluted soil according to claim 1, which is characterized in that the mixing tank right end connects
Logical drainage conduit (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391693.1A CN108212284B (en) | 2017-12-21 | 2017-12-21 | A kind of prosthetic device of As polluted soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711391693.1A CN108212284B (en) | 2017-12-21 | 2017-12-21 | A kind of prosthetic device of As polluted soil |
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| Publication Number | Publication Date |
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| CN108212284A CN108212284A (en) | 2018-06-29 |
| CN108212284B true CN108212284B (en) | 2019-07-09 |
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| CN201711391693.1A Active CN108212284B (en) | 2017-12-21 | 2017-12-21 | A kind of prosthetic device of As polluted soil |
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| US6811300B2 (en) * | 2001-03-08 | 2004-11-02 | Komatsu Ltd. | Rotational speed controller for mixing equipment of soil modifying machine and engine speed controller for soil modifying machine |
| JP5692646B2 (en) * | 2011-03-22 | 2015-04-01 | 株式会社大林組 | Sediment crushing and mixing equipment |
| CN203886928U (en) * | 2014-05-12 | 2014-10-22 | 福建工程学院 | Restoration equipment suitable for polluted soil containing hard hybrid materials |
| CN206652836U (en) * | 2017-02-22 | 2017-11-21 | 郑军 | A kind of contaminated soil remediation device |
| CN106984645A (en) * | 2017-06-09 | 2017-07-28 | 成都环磊科技有限公司 | A kind of recirculating fluidized bed contaminated soil remediation device |
| CN107335681A (en) * | 2017-08-10 | 2017-11-10 | 泉州市惠安闽投商贸有限公司 | A kind of contaminated soil improvement prosthetic device |
| CN207951563U (en) * | 2017-12-21 | 2018-10-12 | 贵州万通环保工程有限公司 | A kind of prosthetic device of As polluted soil |
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2017
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