CN107807010B - Pipeline sampler - Google Patents
Pipeline sampler Download PDFInfo
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- CN107807010B CN107807010B CN201711054148.3A CN201711054148A CN107807010B CN 107807010 B CN107807010 B CN 107807010B CN 201711054148 A CN201711054148 A CN 201711054148A CN 107807010 B CN107807010 B CN 107807010B
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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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
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
- G01N2001/1031—Sampling from special places
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Abstract
The invention discloses a slurry pipeline sampler, which comprises an installation support supported on a floor, wherein a sample collection barrel is supported on the installation support, a first collection cavity and a second collection cavity are arranged in the sample collection barrel, and the first collection cavity and the second collection cavity are arranged side by side and are both provided with openings at the tops. The top of sample collecting bucket is equipped with the sampling tube with the thick liquid formula sample conveyer pipe intercommunication that is used for carrying thick liquid formula sample, and the sampling tube swing sets up on the installing support and links to each other with the controller that is used for controlling its action to under the control of controller according to the sample volume of setting for and sample interval time at the reciprocal swing in the top in first collection chamber and second collection chamber, so that thick liquid formula sample falls into first collection chamber or the intracavity sample is collected to the second. The sampling barrel is arranged below the sample collecting barrel, a first outlet for enabling the slurry type sample in the first collecting cavity to flow back to the slurry type sample conveying pipe and a second outlet for enabling the slurry type sample in the second collecting cavity to fall into the sampling barrel downwards are arranged on the sample collecting barrel.
Description
Technical Field
The invention relates to the fields of mining, metallurgy and petrifaction, in particular to a pipeline sampler.
Background
In the mining and metallurgy production process of black, nonferrous and rare metals, nonmetal and the like, ores are crushed and ground and then are generally conveyed to various production procedures in a slurry type fluid mode through pipelines for sorting, dewatering and tailing treatment. In the production process, the ore pulp is generally conveyed by a pipeline, and a conveying system is in a closed state and is difficult to sample. In the prior art, pipeline pressure sampling or ore pulp multistage division sampling is generally adopted, and sampling equipment of the pipeline pressure sampling and the ore pulp multistage division sampling is complex, high in cost, complex in sampling operation and low in sampling efficiency.
Disclosure of Invention
The invention provides a pipeline sampler, which aims to solve the technical problems of complex sampling equipment, higher cost, complex sampling operation and low sampling efficiency in the conventional sampling mode.
The technical scheme adopted by the invention is as follows:
a pipeline sampler comprises a mounting bracket supported on a floor, wherein a sample collecting barrel is supported on the mounting bracket, a first collecting cavity and a second collecting cavity for respectively collecting slurry samples are arranged in the sample collecting barrel, and the first collecting cavity and the second collecting cavity are arranged side by side and have openings at the tops; a sampling tube communicated with a pulp type sample conveying tube for conveying pulp type samples is arranged above the sample collecting barrel, the sampling tube is arranged on the mounting support in a swinging mode and is connected with a controller for controlling the motion of the sampling tube, and the sampling tube swings back and forth above the first collecting cavity and the second collecting cavity under the control of the controller according to set sampling quantity and sampling interval time so that the pulp type samples fall into the first collecting cavity or the second collecting cavity for sampling; the sampling barrel is arranged below the sample collecting barrel, a first outlet for enabling the slurry type sample in the first collecting cavity to flow back to the slurry type sample conveying pipe and a second outlet for enabling the slurry type sample in the second collecting cavity to fall into the sampling barrel downwards are arranged on the sample collecting barrel.
Furthermore, the sampling tube is vertically arranged, the top end of the sampling tube is rotatably connected with the mounting bracket and is communicated with the slurry type sample conveying pipe, and the bottom end of the sampling tube, which is arranged oppositely, is positioned above the first collecting cavity and is connected with the controller.
Further, the controller comprises a time delay relay and an electromagnet assembly which are connected to the outer side wall of the sample collection barrel; the pipeline sampler also comprises a connecting rod, and two ends of the connecting rod are respectively connected with the sampling tube, the delay relay and the electromagnet assembly so as to pull the sampling tube to reciprocate between the first collecting cavity and the second collecting cavity under the action of the delay relay and the electromagnet assembly.
Furthermore, the sample collection barrel is of a hollow cylindrical structure with an opening at the top end, and comprises a barrel body in a hollow cylindrical shape, and a bottom plate for plugging the barrel body is arranged at the bottom end of the barrel body; the baffle that is used for separating the inner chamber of sample collecting vessel for first collection chamber and second collection chamber is vertically equipped with on the internal surface of bottom plate.
Further, the bottom plate is an inclined plate which is obliquely arranged; the first outlet is arranged at the joint of the barrel body and the inclined plate; the second outlet is arranged at the joint of the inclined plate and the partition plate.
Furthermore, the included angle between the inclined plate and the horizontal plane is 25-75 degrees.
Furthermore, the sample collecting barrel also comprises a first discharging nozzle, the first discharging nozzle is obliquely arranged, and the inclination direction and the inclination angle of the first discharging nozzle are respectively the same as the inclination direction and the inclination angle of the bottom plate; one end of the first discharging nozzle is fixed with the outer side wall of the barrel body and is communicated with the first outlet, the other end of the first discharging nozzle, which is arranged oppositely, is supported on the mounting bracket and extends out of the mounting bracket, and one end of the first discharging nozzle, which extends out of the mounting bracket 10, is connected with a slurry type sample return pipe which is connected with a slurry type sample conveying pipe.
Further, the sample collecting barrel still includes the second ejection of compact mouth, the vertical setting of second ejection of compact mouth, its top and the lateral wall fixed connection of swash plate and with the second export intercommunication, its relative bottom that sets up is located the top of sampling bucket.
Furthermore, the top end of the sampling tube is connected with a conveying hose communicated with the sampling tube, the conveying hose is connected with a pipeline nipple communicated with the conveying hose, and the pipeline nipple is communicated with the slurry type sample conveying tube.
Furthermore, the pipeline sampler also comprises a switch valve which is arranged in the pipeline of the pipeline nipple and used for controlling the on-off of the pipeline nipple, and the switch valve is electrically connected with the electric cabinet.
The invention has the following beneficial effects:
the pipeline sampler can realize automatic high-frequency sampling work, has high sampling efficiency and can effectively reduce the labor intensity of workers; the sampling process is simple to operate and easy to realize; the sampling pipe is correspondingly driven by the controller to swing back and forth according to the set sampling amount and sampling interval time so as to sample, the obtained sample is uniform and representative, and the ore pulp in the sampling pipeline stably flows for a long time, so that the problem that the sampling is influenced due to the blockage of the sampling pipeline is avoided; most importantly, the pipeline sampler mainly comprises an installation support, a sample collection barrel, a sampling tube, a controller and a sampling barrel, and has the advantages of simple structure and simple interconnection relationship among all parts, so that the pipeline sampler disclosed by the invention is low in manufacturing cost, small in installation required space, low in equipment failure rate, and easy to install and maintain.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a pipeline sampler according to a preferred embodiment of the present invention.
Description of the figures
10. Mounting a bracket; 20. a sample collection barrel; 201. a first collection chamber; 202. a second collection chamber; 203. a first outlet; 204. a second outlet; 21. a barrel body; 22. a base plate; 23. a partition plate; 24. a first discharge nozzle; 25. a second discharge nozzle; 30. a sampling tube; 41. a time delay relay and an electromagnet assembly; 50. a sampling barrel; 60. a connecting rod.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Referring to fig. 1, the preferred embodiment of the present invention provides a pipeline sampler, which comprises a mounting bracket 10 supported on a floor, a sample collection barrel 20 supported on the mounting bracket 10, a first collection chamber 201 and a second collection chamber 202 arranged in the sample collection barrel 20 and used for respectively collecting slurry samples, wherein the first collection chamber 201 and the second collection chamber 202 are arranged side by side and are both open at the top. A sampling tube 30 communicated with a paddle type sample conveying tube (not shown) for conveying a paddle type sample is arranged above the sample collecting barrel 20, the sampling tube 30 is arranged on the mounting bracket 10 in a swinging mode and is connected with a controller for controlling the action of the sampling tube, so that the sampling tube 30 can swing back and forth above the first collecting cavity 201 and the second collecting cavity 202 according to the set sampling amount and the set sampling interval time under the control of the controller, and the paddle type sample can fall into the first collecting cavity 201 or the second collecting cavity 202 for sampling. A sampling barrel 50 is arranged below the sample collecting barrel 20, a first outlet 203 for the slurry type sample in the first collecting cavity 201 to flow back to the slurry type sample conveying pipe and a second outlet 204 for the slurry type sample in the second collecting cavity 202 to fall into the sampling barrel 50 are arranged on the sample collecting barrel 20. The sampling process of the pipeline sampler of the embodiment is as follows: first, the sampling tube 30 is communicated with a paddle type sample conveying tube for conveying a paddle type sample; then, the controller drives the sampling tube 30 to swing back and forth according to the preset sampling amount and sampling interval time, so that the pulp type samples in the sampling tube 30 fall into the first collection cavity 201 and the second collection cavity 202 to be sampled; the paddle type sample dropped into the second collection cavity 202 falls into the sampling barrel 50 through the second outlet 204 for sampling and analysis by the staff, and the paddle type sample dropped into the first collection cavity 201 flows back into the paddle type sample conveying pipe through the first outlet 203 again. The pipeline sampler of the embodiment can realize automatic high-frequency sampling work, has high sampling efficiency and can effectively reduce the labor intensity of workers; the sampling process is simple to operate and easy to realize; the sampling pipe 30 is correspondingly driven by the controller to swing back and forth according to the set sampling amount and sampling interval time so as to sample, the obtained sample is uniform and representative, and the ore pulp in the sampling pipe 30 stably flows for a long time, so that the problem that the sampling is influenced by the blockage of a sampling pipeline is avoided; most importantly, the pipeline sampler of the embodiment mainly comprises a mounting bracket 10, a sample collecting barrel 20, a sampling tube 30, a controller and a sampling barrel 50, and has the advantages of simple structure and simple interconnection relationship among all parts, so that the pipeline sampler of the embodiment has low manufacturing cost, small space required by installation, low equipment failure rate and easy installation and maintenance.
Alternatively, as shown in fig. 1, the sampling tube 30 is vertically disposed, with its top end rotatably connected to the mounting bracket 10 and communicating with the paddle-type sample transfer tube, and its oppositely disposed bottom end positioned above the first collection chamber 201 and connected to the controller. Because the sampling tube 30 is vertically arranged and the bottom end is positioned above the first collecting cavity 201, before sampling, the slurry type sample in the sampling tube 30 falls into the first collecting cavity 201 downwards and then flows back into the slurry type sample conveying tube again through the first outlet 203, so that the waste of the slurry type sample is avoided; after the sampling starts, the sampling tube 30 swings back and forth between the first collection cavity 201 and the second collection cavity 202 according to the sampling amount and the sampling interval time preset by the controller so that the second collection cavity 202 samples; after sampling, the sampling tube 30 is located above the first collection cavity 201 again, so as to avoid affecting the sampling of the second collection cavity 202.
Optionally, as shown in FIG. 1, the controller includes a time delay relay and electromagnet assembly 41 attached to the outside wall of the sample collection barrel 20. The pipeline sampler further comprises a connecting rod 60, and two ends of the connecting rod 60 are respectively connected with the sampling tube 30 and the time delay relay and electromagnet assembly 41, so that the sampling tube 30 is pulled to reciprocate between the first collection cavity 201 and the second collection cavity 202 under the action of the time delay relay and electromagnet assembly 41.
Specifically, the time delay relay and electromagnet assembly 41 includes an electromagnet, and the time delay relay and electromagnet assembly 41 can set the energization interval time and the energization time to enable the electromagnet to be energized to operate or to be de-energized to stop operating, and in the energized state, the electromagnet adsorbs the connecting rod 60 by magnetic force to enable the sample to be fed into the first collection cavity 201 to perform sampling operation; in case of power failure, the magnetic force of the electromagnet disappears, the link 60 is pushed back to the initial position by the elastic mechanism in the delay relay and electromagnet assembly 41, and the sample is fed into the second collection chamber 202 for non-sampling operation.
Optionally, the top end of the sampling tube 30 is connected to a delivery hose (not shown) connected to a tube nipple (not shown) connected to the delivery hose, and the tube nipple is connected to the paddle-type sample delivery tube. The paddle type sample in the paddle type sample conveying pipe sequentially passes through the pipeline short connecting pipe and the conveying hose and then enters the sampling pipe 30. Preferably, in order to control whether the paddle type sample in the paddle type sample conveying pipe flows into the sampling pipe 30, in the preferred embodiment, the pipeline sampler further comprises a switch valve arranged in the pipeline of the pipeline nipple to control the on-off of the pipeline nipple, and the switch valve is electrically connected with the electric cabinet and is opened or closed under the control of the electric cabinet.
Alternatively, as shown in fig. 1, the sample collection barrel 20 is a hollow cylindrical structure with an open top end, and includes a barrel body 21 in a hollow cylindrical shape, and a bottom plate 22 for plugging the barrel body 21 is disposed at a bottom end of the barrel body 21. A partition 23 for dividing the inner cavity of the sample collection barrel 20 into a first collection chamber 201 and a second collection chamber 202 is vertically provided on the inner surface of the bottom plate 22. The sample collection barrel 20 has a simple structure, and the inner cavity of the barrel 21 is divided into a first collection cavity 201 and a second collection cavity 202 by the partition plate 23, which is easy to implement.
Preferably, in order to facilitate the outward flow of the slurry samples in the first collection chamber 201 and the second collection chamber 202, in a preferred embodiment of the present invention, as shown in fig. 1, the bottom plate 22 is an inclined plate, and the first outlet 203 is disposed on the barrel 21 at the junction with the inclined plate; the second outlet 204 is disposed at the junction of the swash plate and the partition plate 23.
In the embodiment of the invention, the included angle between the inclined plate and the horizontal plane is 25-75 degrees. In this embodiment, the inclined plate forms an angle of 45 ° with the horizontal plane.
Optionally, as shown in FIG. 1, the sample collection bucket 20 further includes a first tap 24, the first tap 24 being inclined in the same direction and angle as the inclination of the floor 22, respectively. One end of the first discharging nozzle 24 is fixed with the outer side wall of the barrel 21 and is communicated with the first outlet 203, the other end arranged oppositely is supported on the mounting bracket 10 and extends out of the mounting bracket 10, and one end of the first discharging nozzle 24 extending out of the mounting bracket 10 is connected with a slurry type sample return pipe (not shown) used for being connected with a slurry type sample conveying pipe.
Optionally, as shown in fig. 1, the sample collection barrel 20 further includes a second discharge nozzle 25, the second discharge nozzle 25 is vertically disposed, a top end of the second discharge nozzle 25 is fixedly connected to the outer sidewall of the inclined plate and is communicated with the second outlet 204, and an oppositely disposed bottom end of the second discharge nozzle is located above the sampling barrel 50.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A pipeline sampler is characterized in that,
the device comprises a mounting bracket (10) supported on the floor, wherein a sample collecting barrel (20) is supported on the mounting bracket (10), a first collecting cavity (201) and a second collecting cavity (202) which are used for collecting pulp samples respectively are arranged in the sample collecting barrel (20), and the first collecting cavity (201) and the second collecting cavity (202) are arranged side by side and are both open at the top;
a sampling pipe (30) communicated with a pulp type sample conveying pipe for conveying pulp type samples is arranged above the sample collecting barrel (20), the sampling pipe (30) is arranged on the mounting support (10) in a swinging mode and is connected with a controller for controlling the action of the sampling pipe, so that the sampling pipe can swing back and forth above the first collecting cavity (201) and the second collecting cavity (202) under the control of the controller according to set sampling amount and sampling interval time, and the pulp type samples can fall into the first collecting cavity (201) or the second collecting cavity (202) for sampling;
a sampling barrel (50) is arranged below the sample collecting barrel (20), a first outlet (203) for enabling the slurry type sample in the first collecting cavity (201) to flow back into the slurry type sample conveying pipe and a second outlet (204) for enabling the slurry type sample in the second collecting cavity (202) to fall into the sampling barrel (50) are formed in the sample collecting barrel (20);
the sampling tube (30) is vertically arranged, the top end of the sampling tube is rotatably connected with the mounting support (10) and is communicated with the slurry type sample conveying pipe, the bottom end of the sampling tube (30) which is arranged oppositely is positioned above the first collecting cavity (201) and is connected with the controller, and the bottom end of the sampling tube (30) is positioned above the first collecting cavity (201), so that the slurry type sample in the sampling tube (30) falls into the first collecting cavity (201) downwards before sampling is started, and then flows back into the slurry type sample conveying pipe again through the first outlet (203), so that the waste of the slurry type sample is avoided; after the sampling starts, the sampling tube (30) swings back and forth between the first collection cavity (201) and the second collection cavity (202) according to the sampling amount and the sampling interval time preset by the controller so that the second collection cavity (202) can sample; after sampling is finished, the sampling tube (30) is positioned above the first collecting cavity (201) again, so that the sampling of the second collecting cavity (202) is prevented from being influenced;
the top end of the sampling tube (30) is connected with a conveying hose communicated with the sampling tube, the conveying hose is connected with a pipeline nipple communicated with the conveying hose, the pipeline nipple is communicated with the slurry type sample conveying tube, and a slurry type sample in the slurry type sample conveying tube enters the sampling tube (30) after passing through the pipeline nipple and the conveying hose in sequence;
the controller comprises a delay relay and an electromagnet assembly (41) which are connected to the outer side wall of the sample collecting barrel (20), the pipeline sampler further comprises a connecting rod (60), and two ends of the connecting rod (60) are respectively connected with the sampling tube (30) and the delay relay and electromagnet assembly (41) so as to pull the sampling tube (30) to reciprocate between the first collecting cavity (201) and the second collecting cavity (202) under the action of the delay relay and the electromagnet assembly (41); the time delay relay and electromagnet assembly (41) comprises an electromagnet, the time delay relay and electromagnet assembly (41) can enable the electromagnet to be electrified to work or to be powered off to stop working by setting the electrifying interval time and the electrifying time, and under the condition of electrification, the electromagnet adsorbs the connecting rod (60) through magnetic force so that a sample is fed into the first collection cavity (201) to perform sampling operation; under the condition of power failure, the magnetic force of the electromagnet disappears, the connecting rod (60) is pushed back to the initial position under the action of an elastic mechanism in the time delay relay and electromagnet assembly (41), and a sample is fed into the second collection cavity (202) to carry out non-sampling operation.
2. The pipeline sampler of claim 1,
the sample collecting barrel (20) is of a hollow cylindrical structure with an open top end and comprises a hollow cylindrical barrel body (21), and a bottom plate (22) used for plugging the barrel body (21) is arranged at the bottom end of the barrel body (21);
a partition plate (23) used for dividing the inner cavity of the sample collecting barrel (20) into the first collecting cavity (201) and the second collecting cavity (202) is vertically arranged on the inner surface of the bottom plate (22).
3. The pipeline sampler of claim 2,
the bottom plate (22) is an inclined plate which is obliquely arranged;
the first outlet (203) is arranged at the joint of the barrel body (21) and the inclined plate;
the second outlet (204) is arranged at the joint of the inclined plate and the partition plate (23).
4. The pipeline sampler of claim 3,
the included angle between the inclined plate and the horizontal plane is 25-75 degrees.
5. The pipeline sampler of claim 3,
the sample collecting barrel (20) further comprises a first discharging nozzle (24), and the first discharging nozzle (24) is obliquely arranged, and the inclination direction and the inclination angle of the first discharging nozzle are respectively the same as those of the bottom plate (22);
one end of the first discharging nozzle (24) is fixed with the outer side wall of the barrel body (21) and communicated with the first outlet (203), the other end of the first discharging nozzle (24) which is arranged oppositely is supported on the mounting support (10) and extends out of the mounting support (10), and one end of the first discharging nozzle (24) which extends out of the mounting support (10) is connected with a pulp type sample return pipe which is used for being connected with the pulp type sample conveying pipe.
6. The pipeline sampler of claim 3,
the sample collecting barrel (20) further comprises a second discharging nozzle (25), the second discharging nozzle (25) is vertically arranged, the top end of the second discharging nozzle is fixedly connected with the outer side wall of the inclined plate and communicated with the second outlet (204), and the bottom end of the second discharging nozzle, which is arranged oppositely, is located above the sampling barrel (50).
7. The pipeline sampler of claim 1,
the pipeline sampler also comprises a switch valve which is arranged in the pipeline of the pipeline nipple and used for controlling the on-off of the pipeline nipple, and the switch valve is electrically connected with the electric cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711054148.3A CN107807010B (en) | 2017-10-31 | 2017-10-31 | Pipeline sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711054148.3A CN107807010B (en) | 2017-10-31 | 2017-10-31 | Pipeline sampler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107807010A CN107807010A (en) | 2018-03-16 |
| CN107807010B true CN107807010B (en) | 2020-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711054148.3A Active CN107807010B (en) | 2017-10-31 | 2017-10-31 | Pipeline sampler |
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| CN (1) | CN107807010B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109632878A (en) * | 2019-01-26 | 2019-04-16 | 江西工程学院 | Intelligent automated fluid specific heat capacity measuring instrument |
| CN112255051B (en) * | 2020-11-17 | 2022-07-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Ore pulp sampling device of open type pipeline |
| CN115352763A (en) * | 2022-09-26 | 2022-11-18 | 镇江市丰泰化验制样设备有限公司 | Divide sample with going out hopper |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2065758U (en) * | 1989-11-06 | 1990-11-14 | 金奎训 | Automatic sampler |
| CN2077992U (en) * | 1990-10-09 | 1991-05-29 | 桦甸市板庙子金矿 | Automatic tractive ore-pulp sampling machine |
| JP2009025167A (en) * | 2007-07-20 | 2009-02-05 | Hitachi High-Technologies Corp | Automatic analyzing apparatus |
| CN201402232Y (en) * | 2009-04-01 | 2010-02-10 | 长沙开元仪器有限公司 | Deflector-type riffle |
| CN202974897U (en) * | 2012-11-15 | 2013-06-05 | 丹东东方测控技术有限公司 | Reciprocating ore pulp sampling device used in calibration process of X-ray fluorescence analyzer |
| CN203148705U (en) * | 2013-01-21 | 2013-08-21 | 宜都兴发化工有限公司 | Automatic wind-driven sampling device |
| CN104568494A (en) * | 2013-10-18 | 2015-04-29 | 七台河宝泰隆煤化工股份有限公司 | Automatic sampling device of flotation concentrate tailings |
| CN103527814B (en) * | 2013-10-28 | 2016-08-17 | 长沙有色冶金设计研究院有限公司 | Ore pulp whereabouts pulp automatic control reversal valve |
| CN204731081U (en) * | 2015-06-26 | 2015-10-28 | 南京国电环保科技有限公司 | A kind of cutting type reduction device |
| CN204903239U (en) * | 2015-09-10 | 2015-12-23 | 山东新开元环保科技有限公司 | Powdery material sampler |
| CN105223056B (en) * | 2015-10-23 | 2018-01-16 | 长沙开元仪器股份有限公司 | A kind of swing type contracting device |
| CN207516078U (en) * | 2017-10-31 | 2018-06-19 | 华刚矿业股份有限公司 | Pipeline sampler |
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2017
- 2017-10-31 CN CN201711054148.3A patent/CN107807010B/en active Active
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