CN113477310A - Air drying and grinding integrated device and method for soil sample - Google Patents
Air drying and grinding integrated device and method for soil sample Download PDFInfo
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- CN113477310A CN113477310A CN202110673525.1A CN202110673525A CN113477310A CN 113477310 A CN113477310 A CN 113477310A CN 202110673525 A CN202110673525 A CN 202110673525A CN 113477310 A CN113477310 A CN 113477310A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/02—Crushing or disintegrating by roller mills with two or more rollers
- B02C4/08—Crushing or disintegrating by roller mills with two or more rollers with co-operating corrugated or toothed crushing-rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C21/00—Disintegrating plant with or without drying of the material
-
- 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
- B02C23/10—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone
- B02C23/12—Separating or sorting of material, associated with crushing or disintegrating with separator arranged in discharge path of crushing or disintegrating zone with return of oversize material to crushing or disintegrating zone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
- B02C4/28—Details
- B02C4/42—Driving mechanisms; Roller speed control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The soil sample can be treated by the air drying and grinding integrated device and method, fertility and soil enzyme activity can be measured, a hopper is arranged on the upper side of a grinding box in a communicated mode, a grinding mechanism is arranged in the grinding box, the lower side of the grinding box is communicated with the upper side of a screening box, two vertically and symmetrically arranged supports are fixedly connected to two sides of the bottom of the screening box respectively, and an annular base is fixedly connected to one end, far away from the screening box, of each support. According to the invention, the air heater mechanism is arranged to quickly hot air dry the sample so as to save a large amount of time, the grinding mechanism is used for grinding, the structure is simple, the grinding is stable, the screen and the vibration motor are arranged to screen and process the sample, the grinding quality is improved, the material returning mechanism is arranged so that the screened sample can flow back to the hopper for repeated grinding, the grinding efficiency is improved, the labor is saved, and the material waste is avoided.
Description
Technical Field
The invention belongs to the technical field of agricultural foundations, and relates to an air-drying and grinding integrated device and method for a soil sample.
Background
Soil provides necessary nutrients for plant growth, the research on soil fertility condition and soil enzyme activity is an indispensable part in the field of agricultural basic science, and the measurement of soil sample nutrients is mainly divided into four steps: taking soil, air drying, grinding and analyzing. In the actual experimental process, the soil sample is usually placed on the ground for air drying, so that a lot of time is consumed, the sample is easily polluted when being exposed in the air, and the soil sample is difficult to air-dry uniformly. In the determination of soil fertility and enzyme activity, different types of indexes need to pass through sieves with different apertures, and generally need to be repeatedly ground for many times, so that the grinding efficiency is low, manpower is wasted, and subsequent detection test data of an experiment are influenced.
The existing sample grinding device for geotechnical engineering is complex in structure, troublesome to maintain and poor in grinding effect, so that the invention provides an air-drying and grinding integrated device for a soil sample to solve the problems in the background technology.
Disclosure of Invention
The invention aims to solve the technical problem of providing an air-drying and grinding integrated device and method for a soil sample, which are simple in structure, the soil sample is ground in a grinding box, the screening box is used for screening, and an air heater is used for drying, so that the fertility and the soil enzyme activity of the treated soil sample can be favorably detected, the soil sample is repeatedly ground during screening, the grinding efficiency is improved, the labor is saved, and the material waste is avoided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows: an air-drying and grinding integrated device and a method for a soil sample comprise a grinding box, a screening box and a hot air blower; the upside of grinding case sets up rather than UNICOM hopper, and the downside of grinding case and the upside intercommunication of screening case, the support and the annular base of screening bottom of the case portion are connected, and the screening incasement sets up the screen cloth of slope, and vibrating motor is connected with one side of screening case, and the discharge gate is located hot-blast machine and is connected with the bottom of screening case, and the one side that is close to the lower limit of screen cloth sets up the slag notch, and the slag notch is connected with the feed back section of thick bamboo, sets up feed back mechanism in the feed back section of thick bamboo.
The grinding mechanism comprises a casing fixed on one side of the grinding box, a driving motor is fixedly connected to one side of the casing, the output end of the driving motor is connected with a first rotating shaft, and the first rotating shaft penetrates through the casing and extends into the casing.
One side of the grinding box is provided with a through hole communicated with the shell, and the rotating rod penetrates through the through hole to be matched with the through hole.
Two parallel grinding rollers are arranged in the grinding box, and a shaft head at one end of each grinding roller is matched with the grinding box.
The grinding roller is connected with the rotating rods, and the two rotating rods are connected with the two transmission gears which are meshed with each other; the first rotating shaft is fixedly connected with one end of one rotating rod.
The feed back mechanism is connected with the second rotating shaft including fixing the servo motor at the lower end of the feed back barrel, and one end of the second rotating shaft, which is far away from the servo motor, penetrates and extends into the feed back barrel to be connected with the auger rod.
The upper end of the feed back cylinder is connected with a feed back pipe, and the feed back pipe is connected with a hopper.
The front side fixedly connected with control switch of screening case grinds mechanism, vibrating motor and feed back mechanism and control switch electric connection.
The hot air blower is connected with the screening box through a fastener; the discharge port is in threaded connection with the screening box; the grinding box and the hopper are connected by fasteners.
The grinding and air-drying method for the air-drying and grinding integrated device and method for the soil sample comprises the following steps:
s1, grinding, namely putting the sample into a hopper, starting a driving motor, rotating a grinding roller, and grinding the sample falling into a grinding box; meanwhile, the vibration motor is started to accelerate the screening efficiency;
s2, re-grinding, screening by a screen, enabling fine and uniform samples to fall to the bottom of a screening box and be discharged from a discharge port, remaining samples with larger particles on the screen and being discharged into a material return barrel from a slag outlet, forcibly moving the samples in the material return barrel upwards for conveying, and returning the samples to a hopper from a material return pipe for repeated grinding;
s3, air-drying, namely detaching the grinding box, detaching the discharge port, replacing the discharge port with an air heater, placing the sample on the screen, opening the air heater, controlling the temperature of hot air to be 60 ℃ and the air speed to be 5m/S, and air-drying the sample in the screening box 2.
Compared with the prior art, the invention has the beneficial effects that:
through setting up grinding mechanism, start driving motor work, drive first pivot and rotate, and then drive the drive gear meshing rotation of fixing with two bull sticks to drive two grinding roller rotations, can grind the processing to the sample that falls to grinding box, simple structure grinds stably.
The hot air blower blows hot air from the lower part, and the hot air from the bottom to the top drives the water vapor of the soil sample to be discharged from the upper part because of low hot air flow density, so that the soil sample can be quickly dried.
Can dismantle screen cloth and vibrating motor through the setting, the screen cloth in different apertures can be chooseed for use in the experiment of difference, and the sample after the grinding processing falls to the screening case, starts vibrating motor work and produces the vibration, and screening efficiency accelerates, and through the screening of screen cloth, the fine and smooth even sample of granule falls to the screening bottom of the case portion and is discharged by the discharge gate, improves the quality that the sample ground.
Through setting up feed back mechanism, the great sample of granule is stayed on the screen cloth, is discharged into the feed back section of thick bamboo by the slag notch, starts servo motor work, drives the second pivot and rotates, and then drives the auger pole and rotate, can force the sample in the feed back section of thick bamboo to move up and carry, is repeated grinding process in flowing back to the hopper by the feed back pipe, improves the efficiency of grinding, uses manpower sparingly, avoids the material extravagant.
The grinding mechanism on the upper part and the discharge port on the lower part can be detached, so that the cleaning and the maintenance are convenient.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
fig. 1 is a schematic perspective view of embodiment 1 of the present invention.
FIG. 2 is a schematic top sectional view of a polishing chamber according to example 1 of the present invention.
Fig. 3 is a schematic front sectional view of the screening box and the feed back cylinder in example 1 of the present invention.
Fig. 4 is a schematic structural diagram of embodiment 2 of the present invention.
In the figure: grinding box 1, screening box 2, hopper 3, support 4, annular base 5, screen cloth 6, vibrating motor 7, discharge gate 8, slag notch 9, feed back cylinder 10, feed back pipe 11, casing 12, driving motor 13, first pivot 14, grinding roller 15, bull stick 16, drive gear 17, servo motor 18, second pivot 19, auger rod 20, control switch 21, air heater 22.
Detailed Description
Example one
As shown in figures 1-3, an air drying and grinding integrated device and method for soil samples comprises a grinding box 1 and a screening box 2, wherein the upper side of the grinding box 1 is communicated with a hopper 3, a grinding mechanism is arranged in the grinding box 1, the lower side of the grinding box 1 is communicated with the upper side of the screening box 2, the grinding box 1 is detachable, two vertically and symmetrically arranged brackets 4 are respectively and fixedly connected to two sides of the bottom of the screening box 2, one end of each bracket 4 far away from the screening box 2 is fixedly connected with an annular base 5, an obliquely arranged screen 6 is detachably and fixedly connected in the screening box 2, a vibrating motor 7 is fixedly connected to one side of the screening box 2, a discharge port 8 is communicated with the bottom of the screening box 2, ground samples fall into the screening box 2, the vibrating motor 7 is started to generate vibration, screening efficiency is accelerated, the samples with fine and uniform particles fall to the bottom of the screening box 2 and are discharged from the discharge port 8 after being screened by the screen 6, improve the quality that the sample ground, one side intercommunication that screening case 2 is close to the lower end of screen cloth 6 is equipped with slag notch 9, and the one end intercommunication that screening case 2 was kept away from to slag notch 9 is equipped with the feed back cylinder 10 of vertical setting, the great sample of granule is left on screen cloth 6, discharge into feed back cylinder 10 by slag notch 9, be equipped with feed back mechanism in the feed back cylinder 10, upper end one side intercommunication of feed back cylinder 10 is equipped with feed back pipe 11, and feed back pipe 11 keeps away from the one end of feed back cylinder 10 and can dismantle the intercommunication setting with hopper 3.
The grinding mechanism comprises a machine shell 12 fixed on one side of a grinding box 1, one side of the machine shell 12 far away from the grinding box 1 is fixedly connected with a driving motor 13, the driving end of the driving motor 13 is rotatably connected with a first rotating shaft 14 transversely arranged, one end of the first rotating shaft 14 far away from the driving motor 13 penetrates and extends into the machine shell 12, the inner wall of one side of the grinding box 1 far away from the machine shell 12 is rotatably connected with two grinding rollers 15 arranged in parallel through two first rotating members respectively, one ends of the two grinding rollers 15 far away from the first rotating members are fixedly connected with rotating rods 16, one ends of the two rotating rods 16 far away from the grinding rollers 15 penetrate and extend into the machine shell 12 and are fixedly connected with two transmission gears 17 respectively in meshing connection, one end of the first rotating shaft 14 in the machine shell 12 is fixedly connected with one end of one rotating rod 16, the driving motor 13 is started to work to drive the first rotating shaft 14 to rotate, and then drive with the fixed drive gear 17 meshing rotation of two bull sticks 16 to drive two grinding roller 15 and rotate, can grind the processing to the sample that falls to grinding case 1, simple structure grinds stably easy maintenance.
In fig. 3: feed back mechanism is including fixing servo motor 18 at feed back cylinder 10 lower extreme, servo motor 18's drive end rotates the second pivot 19 that is connected with vertical setting, and the one end that servo motor 18 was kept away from to second pivot 19 runs through the auger rod 20 that extends to feed back cylinder 10 and the vertical setting of fixedly connected with, start servo motor 18 work, it rotates to drive second pivot 19, and then drive auger rod 20 and rotate, can force the sample in feed back cylinder 10 to move up the transport, by feed back pipe 11 backward flow to repeated grinding processing in the hopper 3, the efficiency of grinding is improved, the manpower is saved, avoid the material extravagant.
In fig. 3: the inner wall of the upper end of the material recovery barrel 10 is rotatably connected with one end, far away from the second rotating shaft 19, of the auger rod 20 through a second rotating piece, and the effect of supporting and stabilizing the rotation of the auger rod 20 is achieved.
In fig. 2: the through-hole that sets up with casing 12 intercommunication is seted up to the lateral wall of grinding case 1, and bull stick 16 runs through the through-hole setting, and the inner wall of through-hole rotates with the lateral wall of bull stick 16 to be connected, and the bull stick 16 of being convenient for rotates.
In fig. 1: screening case 2's front side fixedly connected with control switch 21, and grind mechanism, vibrating motor 7 and feed back mechanism's one end respectively with control switch 21 electric connection, control the convenience, for prior art.
The working principle is as follows: when using this device to grind the soil sample and add man-hour, put into hopper 3 with the sample, because gravity falls to grinding case 1 in, start driving motor 13 work, drive first pivot 14 and rotate, and then drive and rotate with the meshing of two 16 fixed drive gear 17 of bull stick to drive two grinding roller 15 and rotate, can grind processing, simple structure grinds stably easy maintenance to the sample that falls to grinding case 1.
The sample after grinding process falls to screening case 2 in, starts vibrating motor 7 work and produces the vibration, and screening efficiency accelerates, and through the screening of screen cloth 6, the fine and smooth even sample of granule falls to screening case 2 bottoms and is discharged by discharge gate 8, improves the quality that the sample ground.
Secondly, the great sample of granule is stayed on screen cloth 6, is discharged into feed back cylinder 10 by slag notch 9, starts servo motor 18 work, drives second pivot 19 and rotates, and then drives auger stem 20 and rotates, can force the sample in feed back cylinder 10 to move up the transport, flows back to repeatedly grinding processing in hopper 3 by feed back pipe 11, improves the efficiency of grinding, uses manpower sparingly, avoids the material extravagant.
Example two
Referring to fig. 4, an air drying and grinding integrated device and method for soil samples, different from the first embodiment: will grind case 1 and pull down, pull down threaded connection's discharge gate 8 and change for air heater 22, on soil sample placed screen cloth 6, open air heater 22, hot-blast temperature is 60 degrees centigrade, and the wind speed is 5m/s, can air-dry the soil sample in screening box 2 thereupon, grinds processing, simple structure, grinds stably, easy maintenance.
Because the density of hot air flow is low, hot air from bottom to top drives water vapor of the soil sample to be discharged from the upper part, the soil sample can be uniformly air-dried, and the screen 6 is taken out after the power supply is turned off.
The above-described embodiments are merely preferred embodiments of the present invention, and should not be construed as limiting the present invention, and features in the embodiments and examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. The utility model provides an air-dry and integrative device of grinding for soil sample, characterized by: it comprises a grinding box (1), a screening box (2) and a hot air blower (22); the upside of grinding case (1) sets up rather than UNICOM hopper (3), the downside of grinding case (1) and the upside intercommunication of screening case (2), support (4) and annular base (5) of screening case (2) bottom are connected, set up screen cloth (6) of slope in screening case (2), vibrating motor (7) are connected with one side of screening case (2), discharge gate (8) are located air heater (22) and are connected with the bottom of screening case (2), one side that is close to the lower end of screen cloth (6) sets up slag notch (9), slag notch (9) are connected with feed back section of thick bamboo (10), set up feed back mechanism in feed back section of thick bamboo (10).
2. An air drying and grinding integrated device for soil samples according to claim 1, which is characterized in that: the grinding mechanism comprises a machine shell (12) fixed on one side of the grinding box (1), a driving motor (13) is fixedly connected to one side of the machine shell (12), the output end of the driving motor (13) is connected with a first rotating shaft (14), and the first rotating shaft (14) penetrates through the machine shell (12) and extends into the machine shell.
3. An air drying and grinding integrated device for soil samples according to claim 1, which is characterized in that: one side of the grinding box (1) is provided with a through hole communicated with the shell (12), and the rotating rod (16) penetrates through the through hole to be matched with the through hole.
4. An air drying and grinding integrated device for soil samples according to claim 1, which is characterized in that: two parallel grinding rollers (15) are arranged in the grinding box (1), and a shaft head at one end of each grinding roller (15) is matched with the grinding box (1).
5. An air drying and grinding integrated device for soil samples according to claim 4, which is characterized in that: the grinding roller (15) is connected with the rotating rods (16), and the two rotating rods (16) are connected with two transmission gears (17) which are meshed with each other; the first rotating shaft (14) is fixedly connected with one end of one rotating rod (16).
6. An air drying and grinding integrated device for soil samples according to claim 1, which is characterized in that: the feed back mechanism comprises a servo motor (18) fixed at the lower end of the feed back barrel (10), the servo motor (18) is connected with a second rotating shaft (19), and one end, far away from the servo motor (18), of the second rotating shaft (19) penetrates through the feed back barrel (10) and extends into the feed back barrel to be connected with a screw rod (20).
7. An air drying and grinding integrated device for soil samples according to claim 6, which is characterized in that: the upper end of the material return barrel (10) is connected with a material return pipe (11), and the material return pipe (11) is connected with the hopper (3).
8. An air drying and grinding integrated device for soil samples according to claim 1, which is characterized in that: the front side of the screening box (2) is fixedly connected with a control switch (21), and the grinding mechanism, the vibration motor (7) and the material returning mechanism are electrically connected with the control switch (21).
9. An air drying and grinding integrated device for soil samples according to claim 1, which is characterized in that: the hot air blower (22) is connected with the screening box (2) by a fastener; the discharge port (8) is in threaded connection with the screening box (2); the grinding box (1) and the hopper (3) are connected by a fastener.
10. The grinding and air-drying method for the air-drying and grinding integrated device and method for the soil sample according to any one of claims 1 to 9, characterized by comprising the steps of:
s1, grinding, namely putting the sample into the hopper (3), starting the driving motor (13), rotating the grinding roller (15), and grinding the sample falling into the grinding box (1); meanwhile, the vibration motor (7) is started to accelerate the screening efficiency;
s2, re-grinding, wherein after screening by the screen (6), fine and uniform samples with particles fall to the bottom of the screening box (2) and are discharged from the discharge hole (8), samples with larger particles are left on the screen (6) and are discharged into the material return barrel (10) from the slag hole (9), the samples in the material return barrel (10) are forcibly moved upwards for conveying, and the samples flow back to the hopper (3) from the material return pipe (11) for repeated grinding;
s3, air-drying, namely detaching the grinding box (1), detaching the discharge port (8), replacing the discharge port with the hot air blower (22), placing the sample on the screen (6), opening the hot air blower (22), and air-drying the sample in the screening box (2) at the hot air temperature of 60 ℃ and the air speed of 5 m/S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110673525.1A CN113477310A (en) | 2021-06-17 | 2021-06-17 | Air drying and grinding integrated device and method for soil sample |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110673525.1A CN113477310A (en) | 2021-06-17 | 2021-06-17 | Air drying and grinding integrated device and method for soil sample |
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| Publication Number | Publication Date |
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| CN113477310A true CN113477310A (en) | 2021-10-08 |
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| CN202110673525.1A Pending CN113477310A (en) | 2021-06-17 | 2021-06-17 | Air drying and grinding integrated device and method for soil sample |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160131464A (en) * | 2015-05-07 | 2016-11-16 | 황명회 | Low-temperature drier for sludge |
| CN107754988A (en) * | 2017-09-30 | 2018-03-06 | 西安交通大学 | A kind of automatic circulation type soil lapping device |
| CN211823481U (en) * | 2019-12-10 | 2020-10-30 | 徐州市聚源环保科技有限公司 | Quick air-dry device of soil sample |
| CN212142810U (en) * | 2020-04-15 | 2020-12-15 | 洲际海峡环保工程(成都)有限公司 | Be used for discarded object to reinject meticulous grinder of preliminary treatment |
| CN212595966U (en) * | 2020-05-20 | 2021-02-26 | 天津环科环境规划科技发展有限公司 | Soil crushing apparatus |
| CN213315191U (en) * | 2020-09-16 | 2021-06-01 | 鸡西市申太新能源材料有限公司 | Graphite particle grinding device |
-
2021
- 2021-06-17 CN CN202110673525.1A patent/CN113477310A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160131464A (en) * | 2015-05-07 | 2016-11-16 | 황명회 | Low-temperature drier for sludge |
| CN107754988A (en) * | 2017-09-30 | 2018-03-06 | 西安交通大学 | A kind of automatic circulation type soil lapping device |
| CN211823481U (en) * | 2019-12-10 | 2020-10-30 | 徐州市聚源环保科技有限公司 | Quick air-dry device of soil sample |
| CN212142810U (en) * | 2020-04-15 | 2020-12-15 | 洲际海峡环保工程(成都)有限公司 | Be used for discarded object to reinject meticulous grinder of preliminary treatment |
| CN212595966U (en) * | 2020-05-20 | 2021-02-26 | 天津环科环境规划科技发展有限公司 | Soil crushing apparatus |
| CN213315191U (en) * | 2020-09-16 | 2021-06-01 | 鸡西市申太新能源材料有限公司 | Graphite particle grinding device |
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Application publication date: 20211008 |