CN112268759A - Finished product detection sampling device is used in 2-chlorine-5-trifluoromethylpyridine production - Google Patents
Finished product detection sampling device is used in 2-chlorine-5-trifluoromethylpyridine production Download PDFInfo
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- CN112268759A CN112268759A CN202011201695.1A CN202011201695A CN112268759A CN 112268759 A CN112268759 A CN 112268759A CN 202011201695 A CN202011201695 A CN 202011201695A CN 112268759 A CN112268759 A CN 112268759A
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- 238000005070 sampling Methods 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 238000001514 detection method Methods 0.000 title claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 47
- 238000005303 weighing Methods 0.000 claims abstract description 40
- 239000000843 powder Substances 0.000 claims abstract description 39
- JFZJMSDDOOAOIV-UHFFFAOYSA-N 2-chloro-5-(trifluoromethyl)pyridine Chemical compound FC(F)(F)C1=CC=C(Cl)N=C1 JFZJMSDDOOAOIV-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 5
- 239000007787 solid Substances 0.000 claims description 39
- 238000007599 discharging Methods 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- ITQTTZVARXURQS-UHFFFAOYSA-N 3-methylpyridine Chemical compound CC1=CC=CN=C1 ITQTTZVARXURQS-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 3
- VLJIVLGVKMTBOD-UHFFFAOYSA-N 2-chloro-5-(trichloromethyl)pyridine Chemical compound ClC1=CC=C(C(Cl)(Cl)Cl)C=N1 VLJIVLGVKMTBOD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VXLYOURCUVQYLN-UHFFFAOYSA-N 2-chloro-5-methylpyridine Chemical compound CC1=CC=C(Cl)N=C1 VXLYOURCUVQYLN-UHFFFAOYSA-N 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- -1 chip Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
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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
- G01N1/20—Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
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- Life Sciences & Earth Sciences (AREA)
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention relates to a finished product detection sampling device for 2-chloro-5-trifluoromethylpyridine production, wherein one side of a powder finished product discharge pipe is communicated with a sampling branch pipe, the tail end of the sampling branch pipe is provided with an upper control valve, the discharge hole of the upper control valve is provided with an upper feeding connecting pipe, the other end of the upper feeding connecting pipe is communicated with the feed inlet of a weighing hopper, the discharge hole of the weighing hopper is provided with a communicating pipe B, the tail end of the communicating pipe B is connected into a material collection tank, the weighing hopper is provided with a weighing sensor, and the weighing sensor is in communication connection with an upper computer. The invention has the following beneficial effects: the labor intensity of a sampler is reduced, the working efficiency is improved, great contribution is made in the aspect of timely guiding production to realize the stability of the product quality of the device, and the device has the characteristics of one-time permanent installation and use, simple and convenient operation, low cost, easy realization and the like.
Description
Technical Field
The invention relates to a finished product detection sampling device for 2-chloro-5-trifluoromethylpyridine production, and belongs to the technical field of chemical equipment.
Background
2-chloro-5-trifluoromethylpyridine, a chemical substance, english name: 2-Chloro-5-trifluoromethylpyridine. CAS number: 52334-81-3. Appearance and properties: white semi-solid. The preparation method comprises the steps of taking 3-methylpyridine as a raw material, firstly chlorinating to obtain 2-chloro-5-trichloromethylpyridine, and further fluorinating to obtain a product; the product can also be obtained by using 3-methylpyridine as a raw material and carrying out a fluorine chlorination reaction in the presence of a catalyst. Or 2-chloro-5-methylpyridine is used as a raw material, the side chain is firstly chloridized into 2-chloro-5-trichloromethylpyridine by chlorine gas, and then hydrofluoride is used for obtaining the product.
The existing sampling method is that the production flow line is manually and periodically sampled, the sampling time is short, particularly in the production process, the representativeness is poor, and the real condition of the product quality in a certain longer time period cannot be represented. Therefore, it is necessary to design a device with long sampling coverage time, strong representativeness and on-line sampling capability.
Disclosure of Invention
According to the defects in the prior art, the technical problems to be solved by the invention are as follows: in order to solve one of the problems, a finished product detection sampling device for producing 2-chloro-5-trifluoromethylpyridine is provided.
The finished product detection and sampling device for 2-chloro-5-trifluoromethylpyridine production comprises a powder finished product discharge pipe, a sampling branch pipe, an upper control valve, an upper feeding connecting pipe, a weighing hopper, a lower control valve, a lower connecting pipeline, a weighing sensor and a material collecting tank, wherein one side of the powder finished product discharge pipe is communicated with the sampling branch pipe, the tail end of the sampling branch pipe is provided with the upper control valve, the discharge hole of the upper control valve is provided with the upper feeding connecting pipe, the other end of the upper feeding connecting pipe is communicated with the feed hole of the weighing hopper, the discharge hole of the weighing hopper is provided with a communicating pipe B, the tail end of the communicating pipe B is connected into the material collecting tank, the weighing hopper is provided with the weighing sensor, and the weighing sensor is in communication connection with an upper.
Preferably, the powder finished product discharging pipe is provided with an upper inclined pipe section, a middle vertical pipe section and a lower inclined pipe section, the sampling branch pipe has a certain included angle with a vertical surface, and the vertical angle between the upper inclined pipe section and the vertical surface of the powder finished product discharging pipe is equal to the vertical angle between the powder finished product discharging pipe and the vertical surface to form a herringbone.
Preferably, star type ejection of compact has on the discharge gate of weighing hopper, double knives slide valve has on the discharge gate of star type ejection of compact, be connected with communicating pipe A on the first export of double knives slide valve, be connected with communicating pipe B on the second export, control valve under the end connection of communicating pipe A, connecting tube under the exit linkage of lower control valve, connecting tube's the other end is linked together with powder finished product discharging pipe down, communicating pipe B's end connection material collecting tank.
Preferably, the upper feed connection pipe is a bellows.
Preferably, a spiral conveying device A and a spiral conveying device B are respectively arranged in the sampling branch pipe and the lower connecting pipeline, a microwave solid flow switch A and a microwave solid flow switch B are arranged on the communicating pipe A and the communicating pipe B, and the microwave solid flow switch A and the microwave solid flow switch B are both in communication connection with an upper computer.
Preferably, the lower connecting pipeline and the vertical surface form a certain included angle, and the vertical angle between the lower inclined pipe section of the finished powder discharging pipe and the vertical surface is equal to the vertical angle between the finished powder discharging pipe and the vertical surface, so that an inverted herringbone is formed.
Preferably, the finished powder product discharge pipe, the sampling branch pipe and the lower connecting pipeline are made of stainless steel materials.
Preferably, the microwave solid flow switch a is mounted on the communicating pipe a through a microwave solid flow switch mounting seat, the microwave solid flow switch mounting seat comprises a connecting sleeve welded on the communicating pipe a, the connecting sleeve is internally provided with an inner wall step a, an inner inserting pipe is inserted into the connecting sleeve, the inner inserting pipe is provided with an outer wall step a and an inner wall step a matched with the inner wall step a, a reset compression spring is arranged between the outer wall step a matched with the inner wall step a, the upper part of the microwave solid flow switch a is provided with an external thread, the upper end of the connecting sleeve is in threaded connection through the external thread, and the middle part of the microwave solid flow switch a is provided with an outer wall step B matched with the inner wall step. The sealing performance is better.
Preferably, the outer wall of the inner cannula is vulcanized with rubber.
Preferably, the method for sampling by using the sampling device comprises the following steps:
step 1, opening a spiral conveying device A, an upper control valve, a star-shaped discharging pipe, a left side gate of a double-knife sliding plate valve, a lower control valve and a spiral conveying device B, enabling finished material in a finished powder discharging pipe to flow back to the finished powder discharging pipe from the finished powder discharging pipe through a sampling branch pipe, a weighing hopper, a communicating pipe A and a lower connecting pipeline, realizing internal circulation of the material, and transmitting the material to an upper computer after a microwave solid flow switch A detects that the material flows through the communicating pipe A;
according to the set time delay parameter, closing a left gate, a lower control valve and a spiral conveying device B of the double-knife sliding plate valve, opening a right gate of the double-knife sliding plate valve, enabling the material to enter the material collecting tank, and transmitting the material to an upper computer after the microwave solid flow switch B detects that the material flows through the communicating pipe B;
the weighing sensor begins to collect the weight of the material flowing through the weighing hopper, when the weight of the material to be collected is reached, the weight is transmitted to the upper computer, and the upper computer controls the screw conveying device A and the upper control valve to be closed.
Compared with the prior art, the invention has the following beneficial effects:
the finished product detection sampling device for 2-chloro-5-trifluoromethylpyridine production can continuously sample on line without the need of a sampler to operate and keep, greatly improves the representativeness of the sample, reduces the labor intensity of the sampler, improves the working efficiency, makes a great contribution to the stability of the product quality of the device by guiding production in time, and has the characteristics of permanent use in one-time installation, simple and convenient operation, low cost, easy realization and the like.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or components are generally identified by like reference numerals. In the drawings, elements or components are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the installation of a microwave solids flow switch A;
in the figure: 1. the device comprises a powder finished product discharge pipe 2, a sampling branch pipe 3, a spiral conveying device A4, an upper control valve 5, an upper feeding connecting pipe 6, a weighing hopper 7, a star-shaped discharge pipe 8, a double-knife sliding plate valve 9, a lower control valve 10, a spiral conveying device B11, a lower connecting pipeline 12, a weighing sensor 13, a communicating pipe A14, a communicating pipe B15, a microwave solid flow switch A16, a microwave solid flow switch B17, a material collecting tank 18, a connecting sleeve 19, an inner inserting pipe 20 and a reset compression spring.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Examples
As shown in the figure 1-2, the finished product detection sampling device for producing the 2-chloro-5-trifluoromethylpyridine comprises a powder finished product discharge pipe 1, a sampling branch pipe 2, an upper control valve 4, an upper feeding connecting pipe 5, a weighing hopper 6, a lower control valve 9, a lower connecting pipeline 11, a weighing sensor 12 and a material collecting tank 17, one side of the powder finished product discharge pipe 1 is communicated with a sampling branch pipe 2, the tail end of the sampling branch pipe 2 is provided with an upper control valve 4, an upper feeding connecting pipe 5 is arranged on a discharge hole of the upper control valve 4, the other end of the upper feeding connecting pipe 5 is communicated with a feed inlet of a weighing hopper 6, a communicating pipe B14 is arranged on the discharge hole of the weighing hopper 6, the tail end of a communicating pipe B14 is connected into a material collecting tank 17, the weighing hopper 6 is provided with a weighing sensor 12, and the weighing sensor 12 is in communication connection with an upper computer.
In the embodiment, the powder finished product discharging pipe 1 is provided with an upper inclined pipe section, a middle vertical pipe section and a lower inclined pipe section, the sampling branch pipe 2 has a certain included angle with a vertical surface, and the vertical angle between the upper inclined pipe section and the vertical surface of the powder finished product discharging pipe 1 is equal to the vertical angle between the powder finished product discharging pipe 1 and the vertical surface to form a herringbone shape; the discharge port of the weighing hopper 6 is provided with a star-shaped discharge 7, the discharge port of the star-shaped discharge 7 is provided with a double-knife sliding plate valve 8, a first outlet of the double-knife sliding plate valve 8 is connected with a communicating pipe A13, a second outlet of the double-knife sliding plate valve 8 is connected with a communicating pipe B14, the tail end of the communicating pipe A13 is connected with a lower control valve 9, an outlet of the lower control valve 9 is connected with a lower connecting pipeline 11, the other end of the lower connecting pipeline 11 is communicated with a powder finished product discharge pipe 1, and the tail end of the communicating pipe B14 is connected with a material; the upper feeding connecting pipe 5 is a corrugated pipe; a spiral conveying device A3 and a spiral conveying device B10 are respectively arranged in the sampling branch pipe 2 and the lower connecting pipeline 11, a microwave solid flow switch A15 and a microwave solid flow switch B16 are arranged on the communicating pipe A13 and the communicating pipe B14, and the microwave solid flow switch A15 and the microwave solid flow switch B16 are both in communication connection with an upper computer; the lower connecting pipeline 11 and the vertical surface form a certain included angle, and the vertical angle between the lower inclined pipe section of the finished powder discharging pipe 1 and the vertical surface is equal to the vertical angle between the finished powder discharging pipe 1 and the vertical surface to form an inverted herringbone; the powder finished product discharge pipe 1, the sampling branch pipe 2 and the lower connecting pipeline 11 are made of stainless steel; the microwave solid flow switch A15 is mounted on the communicating pipe A13 through a microwave solid flow switch mounting seat, the microwave solid flow switch mounting seat comprises a connecting sleeve 18 welded on the communicating pipe A13, an inner wall step A is arranged in the connecting sleeve 18, an inner inserting pipe 19 is inserted in the connecting sleeve 18, the inner inserting pipe 19 is provided with an outer wall step matched with the inner wall step A and an inner wall step, a reset compression spring 20 is arranged between the outer wall steps matched with the inner wall step A, the upper part of the microwave solid flow switch A15 is provided with external threads, the upper end of the connecting sleeve 18 is in threaded connection through the external threads, and the middle part of the microwave solid flow switch A15 is provided with an outer wall step B matched with the inner wall step; the outer wall of the inner tube 19 is vulcanized with rubber.
The method for sampling by using the sampling device comprises the following steps:
step 1, opening a spiral conveying device A3, an upper control valve 4, a star-shaped discharging pipe 7, a left side gate of a double-knife sliding plate valve 8, a lower control valve 9 and a spiral conveying device B10, enabling a finished product material in a finished powder discharging pipe 1 to flow back to the finished powder discharging pipe 1 from the finished powder discharging pipe 1 through a sampling branch pipe 2, a weighing hopper 6, a communicating pipe A13 and a lower connecting pipeline 11, realizing internal circulation of the material, and transferring the material to an upper computer after a microwave solid flow switch A15 detects that the material flows through the communicating pipe A13;
according to the set time delay parameter, closing a left gate of the double-blade sliding plate valve 8, the lower control valve 9 and the spiral conveying device B10, opening a right gate of the double-blade sliding plate valve 8, enabling the material to enter the material collecting tank 17, and transmitting the material to an upper computer after the microwave solid flow switch B16 detects that the material flows through the communicating pipe B14;
the weighing sensor 12 starts to collect the weight of the material flowing through the weighing hopper 6, when the weight of the material to be collected is reached, the weight of the material is transmitted to the upper computer, and the upper computer controls the spiral conveying device A3 and the upper control valve 4 to be closed.
Interpretation of related terms: microwave solid flow switch: the measurement process is based on the physical principle of the doppler effect, so that the sensor emits a microwave field through which the microwaves are reflected and received again by the sensor, and are converted into a switching process if the solid material moves through the wave field. CAS100M may be mounted in a pipe, on a conveyor belt, on a blanking plate, bucket elevator, chute, wind conveyor, vibrating trough, or similar conveying means for detecting the presence or absence of material flow. The device can find flow problems in the process of powder, chip, pellet, particle transportation or feeding in advance. This helps to avoid serious problems due to pipe blockage, loss of material or other technical problems of the system.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A finished product detection sampling device is used in 2-chlorine-5-trifluoromethyl pyridine production which characterized in that: comprises a powder finished product discharge pipe (1), a sampling branch pipe (2), an upper control valve (4), an upper feeding connecting pipe (5), a weighing hopper (6), a lower control valve (9), a lower connecting pipeline (11), a weighing sensor (12) and a material collecting tank (17), one side of the powder finished product discharge pipe (1) is communicated with a sampling branch pipe (2), the tail end of the sampling branch pipe (2) is provided with an upper control valve (4), a discharge hole of the upper control valve (4) is provided with an upper feeding connecting pipe (5), the other end of the upper feeding connecting pipe (5) is communicated with the feeding hole of the weighing hopper (6), a communicating pipe B (14) is arranged on the discharging hole of the weighing hopper (6), the tail end of the communicating pipe B (14) is connected into a material collecting tank (17), the weighing hopper (6) is provided with a weighing sensor (12), and the weighing sensor (12) is in communication connection with an upper computer.
2. The finished product detecting and sampling device for producing 2-chloro-5-trifluoromethylpyridine according to claim 1, wherein: the powder finished product discharging pipe (1) is provided with an upper inclined pipe section, a middle vertical pipe section and a lower inclined pipe section, the sampling branch pipe (2) has a certain included angle with a vertical surface, and the vertical angle between the upper inclined pipe section and the vertical surface of the powder finished product discharging pipe (1) is equal to the vertical angle between the powder finished product discharging pipe (1) and the vertical surface to form a herringbone.
3. The finished product detecting and sampling device for producing 2-chloro-5-trifluoromethylpyridine according to claim 2, wherein: star type ejection of compact (7) have on the discharge gate of weighing hopper (6), double knives slide valve (8) have on the discharge gate of star type ejection of compact (7), be connected with communicating pipe A (13) on the first export of double knives slide valve (8), be connected with communicating pipe B (14) on the second export, control flap (9) under the end-to-end connection of communicating pipe A (13), connecting tube (11) under the exit linkage of lower control flap (9), the other end and powder finished product discharging pipe (1) of connecting tube (11) are linked together down, end-to-end connection material collecting tank (17) of communicating pipe B (14).
4. The finished product detecting and sampling device for producing 2-chloro-5-trifluoromethylpyridine according to claim 3, wherein: the upper feeding connecting pipe (5) is a corrugated pipe.
5. The finished product detecting and sampling device for producing 2-chloro-5-trifluoromethylpyridine according to claim 4, wherein: be provided with screw conveyor A (3) and screw conveyor B (10) in sample branch pipe (2) and lower connecting tube (11) respectively, be provided with microwave solid flow switch A (15) and microwave solid flow switch B (16) on communicating pipe A (13) and communicating pipe B (14), microwave solid flow switch A (15) and microwave solid flow switch B (16) all are connected with the host computer communication.
6. The finished product detecting and sampling device for producing 2-chloro-5-trifluoromethylpyridine according to claim 5, wherein: the lower connecting pipeline (11) and the vertical surface form a certain included angle, the vertical angle between the lower inclined pipe section of the finished powder discharging pipe (1) and the vertical surface is equal to the vertical angle between the finished powder discharging pipe (1) and the vertical surface, and an inverted herringbone is formed.
7. The finished product detecting and sampling device for producing 2-chloro-5-trifluoromethylpyridine according to claim 6, wherein: the powder finished product discharge pipe (1), the sampling branch pipe (2) and the lower connecting pipeline (11) are made of stainless steel materials.
8. The finished product detecting and sampling device for producing 2-chloro-5-trifluoromethylpyridine according to claim 7, wherein: the microwave solid flow switch A (15) is installed on the communicating pipe A (13) through a microwave solid flow switch installation seat, the microwave solid flow switch installation seat comprises a connecting sleeve (18) welded on the communicating pipe A (13), an inner wall step A is arranged in the connecting sleeve (18), an inner inserting pipe (19) is inserted into the connecting sleeve (18), the inner inserting pipe (19) is provided with an outer wall step matched with the inner wall step A and an inner wall step, a reset compression spring (20) is arranged between the outer wall steps matched with the inner wall step A, the upper portion of the microwave solid flow switch A (15) is provided with external threads, the microwave solid flow switch A is connected with the upper end of the connecting sleeve (18) through the external threads, and the middle portion of the microwave solid flow switch A (15) is provided with an outer wall step B matched with the inner wall step.
9. The finished product detecting and sampling device for producing 2-chloro-5-trifluoromethylpyridine according to claim 8, wherein: the outer wall of the inner insert tube (19) is vulcanized with rubber.
10. The finished product detecting and sampling device for producing 2-chloro-5-trifluoromethylpyridine according to claim 9, wherein: the method for sampling by using the sampling device comprises the following steps:
step 1, opening a spiral conveying device A (3), an upper control valve (4), a star-shaped discharging pipe (7), a left side gate of a double-knife sliding plate valve (8), a lower control valve (9) and a spiral conveying device B (10), enabling finished material in a finished powder discharging pipe (1) to flow back to the finished powder discharging pipe (1) from the finished powder discharging pipe (1) through a sampling branch pipe (2), a weighing hopper (6), a communicating pipe A (13) and a lower connecting pipeline (11), realizing internal circulation of the material, and transmitting the material to an upper computer after a microwave solid flow switch A (15) detects that the material flows through the communicating pipe A (13);
according to the set time delay parameter, closing a left gate, a lower control valve (9) and a spiral conveying device B (10) of the double-knife sliding plate valve (8), opening a right gate of the double-knife sliding plate valve (8), enabling the material to enter a material collecting tank (17), and transmitting the material to an upper computer after a microwave solid flow switch B (16) detects that the material flows through a communicating pipe B (14);
the weighing sensor (12) starts to collect the weight of the material flowing through the weighing hopper (6), when the weight of the material to be collected is reached, the weight of the material is transmitted to the upper computer, and the upper computer controls the screw conveying device A (3) and the upper control valve (4) to be closed.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011201695.1A CN112268759A (en) | 2020-11-02 | 2020-11-02 | Finished product detection sampling device is used in 2-chlorine-5-trifluoromethylpyridine production |
| PCT/CN2020/128522 WO2022088268A1 (en) | 2020-11-02 | 2020-11-13 | Sampling device for finished product testing for production of 2-chloro-5-trifluoromethylpyridine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011201695.1A CN112268759A (en) | 2020-11-02 | 2020-11-02 | Finished product detection sampling device is used in 2-chlorine-5-trifluoromethylpyridine production |
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| CN112268759A true CN112268759A (en) | 2021-01-26 |
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| WO (1) | WO2022088268A1 (en) |
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| CN114858978A (en) * | 2022-04-29 | 2022-08-05 | 徐诺药业(南京)有限公司 | Monitoring device and method for trimethoxyphenyl production |
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| CN115791547B (en) * | 2023-02-09 | 2023-07-18 | 合肥金星智控科技股份有限公司 | Online monitoring system and method for particle size of powder material |
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| WO2022088268A1 (en) | 2022-05-05 |
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