WO2022088268A1 - 2-氯-5-三氟甲基吡啶生产用成品检测取样装置 - Google Patents

2-氯-5-三氟甲基吡啶生产用成品检测取样装置 Download PDF

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Publication number
WO2022088268A1
WO2022088268A1 PCT/CN2020/128522 CN2020128522W WO2022088268A1 WO 2022088268 A1 WO2022088268 A1 WO 2022088268A1 CN 2020128522 W CN2020128522 W CN 2020128522W WO 2022088268 A1 WO2022088268 A1 WO 2022088268A1
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pipe
finished product
chloro
control valve
flow switch
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PCT/CN2020/128522
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English (en)
French (fr)
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查志雄
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单县欣润化工有限公司
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Publication of WO2022088268A1 publication Critical patent/WO2022088268A1/zh

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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
    • 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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  • the invention relates to a finished product detection and sampling device for the production of 2-chloro-5-trifluoromethylpyridine, and belongs to the technical field of chemical equipment.
  • 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 uses 3-picoline as a raw material, firstly chlorination to obtain 2-chloro-5-trichloromethylpyridine, and then further fluorination to obtain a product; 3-picoline can also be used as a raw material, The fluorination reaction is carried out in the presence of a catalyst to obtain the product. It is also possible to use 2-chloro-5-methylpyridine as a raw material, first chlorinate the side chain into 2-chloro-5-trichloromethylpyridine with chlorine gas, and then use hydrogen fluoride to fluoride the product.
  • the existing sampling methods are all manual sampling on the production process line on a regular basis, and the sampling time is short, especially in the production process, the representativeness is poor, and it cannot represent the real status of product quality in a long period of time. Therefore, it is very necessary to design a device with long sampling coverage time, strong representativeness and online sampling.
  • the technical problem to be solved by the present invention is: in order to solve one of the above problems, a finished product detection and sampling device for the production of 2-chloro-5-trifluoromethylpyridine is provided.
  • the finished product detection and sampling device for the production of 2-chloro-5-trifluoromethylpyridine comprises a powder finished product discharge pipe, a sampling branch pipe, an upper control valve, an upper feed connection pipe, a weighing hopper, and a lower control valve , the lower connecting pipe, the weighing sensor and the collecting tank, one side of the powder product discharge pipe is connected with a sampling branch pipe, the end of the sampling branch pipe has an upper control valve, and the discharge port of the upper control valve is installed with a
  • the upper feed connection pipe, the other end of the upper feed connection pipe is communicated with the feed port of the weighing hopper, a communication pipe B is installed on the discharge port of the weighing hopper, and the end of the communication pipe B is connected to the collecting tank Inside, the weighing bucket has a weighing sensor, and the weighing sensor is connected to the upper computer in communication.
  • the powder product discharge pipe has an upper inclined pipe section, a middle vertical pipe section and a lower inclined pipe section
  • the sampling branch pipe has a certain angle with the vertical plane
  • the upper inclined pipe section of the powder product discharge pipe is connected to the vertical plane.
  • the vertical angle between them and the vertical angle between the powder product discharge pipe and the vertical surface are equal to form a herringbone shape.
  • the discharge port of the weighing hopper is provided with a star-shaped discharge
  • the discharge port of the star-shaped discharge is provided with a double-knife slide valve
  • the first outlet of the double-knife slide valve is connected with a communication pipe A
  • the second outlet is connected with a communication pipe B
  • the end of the communication pipe A is connected to the lower control valve
  • the outlet of the lower control valve is connected to the lower connection pipe
  • the other end of the lower connection pipe is communicated with the powder product discharge pipe
  • the end of the communication pipe B is connected to the collecting tank.
  • the upper feed connection pipe is a corrugated pipe.
  • a screw conveying device A and a screw conveying device B are respectively arranged in the sampling branch pipe and the lower connecting pipe, and a microwave solid flow switch A and a microwave solid flow switch B are arranged on the communication pipe A and the communication pipe B, so Both the microwave solid flow switch A and the microwave solid flow switch B are connected to the host computer for communication.
  • the lower connecting pipe and the vertical plane have a certain angle, the vertical angle between the lower inclined pipe section of the powder product discharge pipe and the vertical plane and the vertical angle between the powder product discharge pipe and the vertical plane Right angles, whose angles are equal, form an inverted herringbone shape.
  • the powder product discharge pipe, the sampling branch pipe and the lower connecting pipe are made of stainless steel.
  • the microwave solid flow switch A is installed on the connecting pipe A through the microwave solid flow switch mounting seat, and the microwave solid flow switch mounting seat includes a connecting sleeve welded on the connecting pipe A, and the connecting sleeve is inside the connecting pipe.
  • There is a reset compression spring between the platforms the upper part of the microwave solid flow switch A has an external thread, and the external thread is threaded with the upper end of the connecting sleeve.
  • Outer wall step platform B Better sealing.
  • rubber is vulcanized on the outer wall of the inner cannula.
  • the method for sampling using the sampling device comprises the following steps:
  • Step 1 Open the screw conveying device A, the upper control valve, the star discharge, the left gate of the double-knife slide valve, the lower control valve and the screw conveying device B, and the finished material in the powder product discharge pipe is discharged from the powder product discharge pipe.
  • the sampling branch pipe, weighing hopper, connecting pipe A, and lower connecting pipe it flows back to the powder product discharge pipe to realize the internal circulation of the material.
  • the microwave solid flow switch A detects that the material flows through the connecting pipe A, it is transmitted to the upper computer.
  • the set delay time parameter close the left gate of the double-knife slide valve, the lower control valve and the screw conveying device B, open the right gate of the double-knife slide valve, the material enters the collecting tank, when the microwave solid flow switch After B detects that the material flows through the connecting pipe B, it is passed to the upper computer;
  • the load cell starts to collect the weight of the material flowing through the weighing hopper.
  • the upper computer controls the screw conveying device A and the upper control valve closes.
  • the present invention has the following beneficial effects:
  • the finished product detection and sampling device for the production of 2-chloro-5-trifluoromethylpyridine can perform continuous online sampling without the need for a sampler to operate and wait all the time, which greatly improves the representativeness of the sample and reduces the The labor intensity of the sampler improves the work efficiency, and makes a great contribution to the timely guidance of production to achieve the stability of the product quality of the device. It has the characteristics of one-time installation and permanent use, simple operation, low cost, and easy implementation.
  • Fig. 1 is the structural representation of the present invention
  • Fig. 2 is the installation schematic diagram of microwave solid flow switch A
  • the finished product detection and sampling device for the production of 2-chloro-5-trifluoromethylpyridine includes a powder product discharge pipe 1, a sampling branch pipe 2, an upper control valve 4, and an upper feed connection pipe 5.
  • an upper control valve 4 at the end, an upper feed connection pipe 5 is installed on the discharge port of the upper control valve 4, and the other end of the upper feed connection pipe 5 is communicated with the feed port of the weighing hopper 6, called A communicating pipe B14 is installed on the discharge port of the measuring hopper 6, and the end of the communicating pipe B14 is connected into the collecting tank 17.
  • the weighing hopper 6 has a weighing sensor 12, and the weighing sensor 12 is communicatively connected to the upper computer.
  • the powder product discharge pipe 1 has an upper inclined pipe section, a middle vertical pipe section and a lower inclined pipe section, the sampling branch pipe 2 has a certain angle with the vertical plane, and the powder product discharge pipe 1 is inclined upward.
  • the vertical angle between the pipe section and the vertical surface and the vertical angle between the powder product discharge pipe 1 and the vertical surface are equal to form a herringbone shape; the discharge port of the weighing bucket 6 has a star.
  • Type discharge 7 the discharge port of the star discharge 7 has a double-knife slide valve 8, the first outlet of the double-knife slide valve 8 is connected with a communication pipe A13, and the second outlet is connected with a communication pipe B14 , the end of the communication pipe A13 is connected to the lower control valve 9, the outlet of the lower control valve 9 is connected to the lower connection pipe 11, and the other end of the lower connection pipe 11 is communicated with the powder product discharge pipe 1, and the communication pipe B14 The end is connected to the collecting tank 17; the upper feeding connecting pipe 5 is a corrugated pipe; the sampling branch pipe 2 and the lower connecting pipe 11 are respectively provided with a screw conveying device A3 and a screw conveying device B10, the communication pipe A13 and The communication pipe B14 is provided with a microwave solid flow switch A15 and a microwave solid flow switch B16, and the microwave solid flow switch A15 and the microwave solid flow switch B16 are both connected to the upper computer for communication; Included angle, the vertical angle between the lower inclined pipe section of the powder product discharge pipe
  • the method for sampling using the sampling device comprises the steps:
  • Step 1 open the screw conveying device A3, the upper control valve 4, the star discharge 7, the left gate of the double-knife slide valve 8, the lower control valve 9 and the screw conveying device B10, and the finished material in the powder product discharge pipe 1
  • the powder product discharge pipe 1 flows back to the powder product discharge pipe 1 through the sampling branch pipe 2, the weighing hopper 6, the connecting pipe A13 and the lower connecting pipe 11 to realize the internal circulation of the material.
  • the microwave solid flow switch A15 detects the material flow After passing through the connecting pipe A13, it is passed to the upper computer;
  • the set delay time parameter close the left gate of the double-knife slide valve 8, the lower control valve 9 and the screw conveying device B10, open the right gate of the double-knife slide valve 8, and the material enters the collection tank 17.
  • the microwave solid flow switch B16 detects that the material flows through the communication pipe B14, it is transmitted to the upper computer;
  • the load cell 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, it is transmitted to the upper computer.
  • the upper computer controls the screw conveying device A3 and the upper control valve 4 to close.
  • Microwave solid flow switch The measurement process is based on the physics of the Doppler effect, so the sensor emits a microwave field, and if the solid material moves through this wave field, the microwaves are reflected and received again by the sensor , and turn it into a switching process.
  • the CAS100M can be installed in pipelines, on conveyor belts, blanking baffles, bucket elevators, chutes, wind conveyors, vibrating troughs or similar conveying facilities to detect flow and no flow.
  • the unit can detect flow problems in powder, chip, pellet, granule transport or feeding in advance. This helps to avoid various serious problems due to blocked pipes, material loss or other technical problems with the system.

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  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Health & Medical Sciences (AREA)
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Abstract

一种2-氯-5-三氟甲基吡啶生产用成品检测取样装置，取样装置包括粉末成品出料管（1），粉末成品出料管（1）的一侧连通有取样支管（2），取样支管（2）的末端具有上控制阀门（4），上控制阀门（4）的出料口上安装有上进料连接管（5），上进料连接管（5）的另一端与称量斗（6）的进料口相连通，称量斗（6）的出料口上安装有连通管B（14），连通管B（14）的末端接入集料罐（17）内，称量斗（6）具有称重传感器（12），称重传感器（12）与上位机通讯连接。取样装置具有以下有益效果：降低了取样员的劳动强度，提高了工作效率，有助于提高产品质量的稳定性，操作简便，成本低。

Description

2-氯-5-三氟甲基吡啶生产用成品检测取样装置
技术领域
本发明涉及一种2-氯-5-三氟甲基吡啶生产用成品检测取样装置，属于化工设备技术领域。
背景技术
2-氯-5-三氟甲基吡啶，一种化学物质，英文名称：2-Chloro-5-trifluoromethylpyridine。CAS号：52334-81-3。外观与性状：白色半固体。其制备方法是以3-甲基吡啶为原料，先进行氯化得2-氯-5-三氯甲基吡啶，再进一步进行氟化而得到产品；也可以用3-甲基吡啶为原料，在催化剂存在下进行氟氯化反应而得到产品。也可以用2-氯-5-甲基吡啶为原料，用氯气先将侧链氯化成2-氯-5-三氯甲基吡啶，再用氟化氢氟化得产品。
现有取样方法，均为人工定期去生产流程线上取样，取样的时间短，尤其是在生产过程中，代表性较差，不能代表某一较长时间段内产品质量的真实状况。因此设计一种取样覆盖时间长、代表性强、能够在线取样的装置非常必要。
发明内容
根据以上现有技术中的不足，本发明要解决的技术问题是：为解决上述问题之一，提供一种2-氯-5-三氟甲基吡啶生产用成品检测取样装置。
本发明所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，包括粉末成品出料管、取样支管、上控制阀门、上进料连接管、称量斗、下控制阀门、下连接管道、称重传感器及集料罐，所述粉末成品出料管的一侧连通有取样支管，所述取样支管的末端具有上控制阀门，所述上控制阀门的出料口上安装有上进料连接管，所述上进料连接管的另一端与称量斗的进料口相连通，称量斗的出料口上安装有连通管B，连通管B的末端接入集料罐内，所述称量斗具有称重传感器，所述称重传感器与上位机通讯连接。
优选地，所述粉末成品出料管具有上倾斜管段、中竖直管段和下倾斜管段，所述取样支管与竖直面具有一定夹角，粉末成品出料管的上倾斜管段与竖直面之间的竖直角和粉末成品出料管与竖直面之间的竖直角，其角度相等，形成人字型。
优选地，所述称量斗的出料口上具有星型出料，所述星型出料的出料口上具有双刀滑板阀，所述双刀滑板阀的第一出口上连接有连通管A，第二出口上连接有连通管B，所述连通管A的末端连接下控制阀门，下控制阀门的出口连接下连接管道，所述下连接管道的 另一端与粉末成品出料管相连通，所述连通管B的末端连接集料罐。
优选地，所述上进料连接管为波纹管。
优选地，所述取样支管和下连接管道内分别设置有螺旋输送装置A和螺旋输送装置B，所述连通管A和连通管B上设置有微波固体流量开关A和微波固体流量开关B，所述微波固体流量开关A和微波固体流量开关B均与上位机通讯连接。
优选地，所述下连接管道与竖直面具有一定夹角，粉末成品出料管的下倾斜管段与竖直面之间的竖直角和粉末成品出料管与竖直面之间的竖直角，其角度相等，形成倒人字型。
优选地，所述粉末成品出料管、取样支管和下连接管道由不锈钢材质制成。
优选地，所述微波固体流量开关A通过微波固体流量开关安装座，安装在连通管A上，所述微波固体流量开关安装座包括焊接在连通管A上的连套管，所述连套管内具有一内壁阶梯台A，所述连套管内插接有内插管，所述内插管具有与内壁阶梯台A相配合的外壁阶梯台以及内壁阶梯台，内壁阶梯台A相配合的外壁阶梯台之间具有复位压缩弹簧，所述微波固体流量开关A的上部具有外螺纹，所述通过外螺纹与连套管的上端螺纹连接，微波固体流量开关A的中部具有与内壁阶梯台相配合的外壁阶梯台B。密封性更佳。
优选地，所述内插管的外壁上硫化有橡胶。
优选地，所述利用该取样装置进行取样的方法，包括如下步骤：
步骤1，打开螺旋输送装置A、上控制阀门、星型出料、双刀滑板阀的左侧闸门、下控制阀门及螺旋输送装置B，粉末成品出料管内的成品物料从粉末成品出料管经取样支管、称量斗、连通管A、下连接管道流回粉末成品出料管，实现物料的内循环，当微波固体流量开关A检测到物料流经连通管A内后，传递给上位机；
据设定的延时时间参数，关闭双刀滑板阀的左侧闸门、下控制阀门和螺旋输送装置B，开启双刀滑板阀的右侧闸门，物料进入集料罐内，当微波固体流量开关B检测到物料流经连通管B内后，传递给上位机；
称重传感器开始采集流经称量斗内的物料重量，当达到需要采集的物料重量时，传递给上位机，上位机控制螺旋输送装置A、上控制阀门关闭。
与现有技术相比，本发明具有以下有益效果：
本发明所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，不需要取样员一直操作并守候的情况下就可在线连续取样，大大提高了样品的代表性，降低了取样员的劳动强度，提高了工作效率，在及时指导生产以实现装置产品质量的稳定性方面作出较大贡献，具有一次性安装永久使用、操作简便、成本低、易于实现等特点。
附图说明
为了更清楚地说明本发明具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍。在所有附图中，类似的元件或部件一般由类似的附图标记标识。附图中，各元件或部件并不一定按照实际的比例绘制。
图1为本发明的结构示意图；
图2为微波固体流量开关A的安装示意图；
图中：1、粉末成品出料管 2、取样支管 3、螺旋输送装置A 4、上控制阀门 5、上进料连接管 6、称量斗 7、星型出料 8、双刀滑板阀 9、下控制阀门 10、螺旋输送装置B 11、下连接管道 12、称重传感器 13、连通管A 14、连通管B 15、微波固体流量开关A 16、微波固体流量开关B 17、集料罐 18、连套管 19、内插管 20、复位压缩弹簧。
具体实施方式
下面结合附图对本发明做进一步描述：
以下通过具体实施例对本发明作进一步说明，但不用以限制本发明，凡在本发明精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。
实施例
如图1-2所示，所述2-氯-5-三氟甲基吡啶生产用成品检测取样装置，包括粉末成品出料管1、取样支管2、上控制阀门4、上进料连接管5、称量斗6、下控制阀门9、下连接管道11、称重传感器12及集料罐17，所述粉末成品出料管1的一侧连通有取样支管2，所述取样支管2的末端具有上控制阀门4，所述上控制阀门4的出料口上安装有上进料连接管5，所述上进料连接管5的另一端与称量斗6的进料口相连通，称量斗6的出料口上安装有连通管B14，连通管B14的末端接入集料罐17内，所述称量斗6具有称重传感器12，所述称重传感器12与上位机通讯连接。
本实施例中，所述粉末成品出料管1具有上倾斜管段、中竖直管段和下倾斜管段，所述取样支管2与竖直面具有一定夹角，粉末成品出料管1的上倾斜管段与竖直面之间的竖直角和粉末成品出料管1与竖直面之间的竖直角，其角度相等，形成人字型；所述称量斗6的出料口上具有星型出料7，所述星型出料7的出料口上具有双刀滑板阀8，所述双刀滑板阀8的第一出口上连接有连通管A13，第二出口上连接有连通管B14，所述连通管A13的末端连接下控制阀门9，下控制阀门9的出口连接下连接管道11，所述下连接管道11的另一端与粉末成品出料管1相连通，所述连通管B14的末端连接集料罐17；所述上进料连接管 5为波纹管；所述取样支管2和下连接管道11内分别设置有螺旋输送装置A3和螺旋输送装置B10，所述连通管A13和连通管B14上设置有微波固体流量开关A15和微波固体流量开关B16，所述微波固体流量开关A15和微波固体流量开关B16均与上位机通讯连接；所述下连接管道11与竖直面具有一定夹角，粉末成品出料管1的下倾斜管段与竖直面之间的竖直角和粉末成品出料管1与竖直面之间的竖直角，其角度相等，形成倒人字型；所述粉末成品出料管1、取样支管2和下连接管道11由不锈钢材质制成；所述微波固体流量开关A15通过微波固体流量开关安装座，安装在连通管A13上，所述微波固体流量开关安装座包括焊接在连通管A13上的连套管18，所述18内具有一内壁阶梯台A，所述连套管18内插接有内插管19，所述内插管19具有与内壁阶梯台A相配合的外壁阶梯台以及内壁阶梯台，内壁阶梯台A相配合的外壁阶梯台之间具有复位压缩弹簧20，所述微波固体流量开关A15的上部具有外螺纹，所述通过外螺纹与连套管18的上端螺纹连接，微波固体流量开关A15的中部具有与内壁阶梯台相配合的外壁阶梯台B；所述内插管19的外壁上硫化有橡胶。
所述利用该取样装置进行取样的方法，包括如下步骤：
步骤1，打开螺旋输送装置A3、上控制阀门4、星型出料7、双刀滑板阀8的左侧闸门、下控制阀门9及螺旋输送装置B10，粉末成品出料管1内的成品物料从粉末成品出料管1经取样支管2、称量斗6、连通管A13、下连接管道11流回粉末成品出料管1，实现物料的内循环，当微波固体流量开关A15检测到物料流经连通管A13内后，传递给上位机；
据设定的延时时间参数，关闭双刀滑板阀8的左侧闸门、下控制阀门9和螺旋输送装置B10，开启双刀滑板阀8的右侧闸门，物料进入集料罐17内，当微波固体流量开关B16检测到物料流经连通管B14内后，传递给上位机；
称重传感器12开始采集流经称量斗6内的物料重量，当达到需要采集的物料重量时，传递给上位机，上位机控制螺旋输送装置A3、上控制阀门4关闭。
相关术语解释：微波固体流量开关：测量过程基于多普勒效应的物理原理，因此传感器会发出一种微波场，如果固体物料移动穿过该波场，微波就会被反射并被传感器再次接收到，并将其转换为切换过程。CAS100M可安装在管道内、输送皮带上、落料挡板、斗式提升机、溜槽、风力输送机、振动槽或类似的传送设施上的有料流无料流的探测。该装置可提前发现粉料、碎屑、小球状、颗粒状运输或进料过程中的流动问题。这有助于避免由于管道堵塞导致的各种严重问题，物料损失或系统的其它技术问题。
以上显示和描述了本发明的基本原理、主要特征以及本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是说明本发 明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (10)

  1. 一种2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：包括粉末成品出料管(1)、取样支管(2)、上控制阀门(4)、上进料连接管(5)、称量斗(6)、下控制阀门(9)、下连接管道(11)、称重传感器(12)及集料罐(17)，所述粉末成品出料管(1)的一侧连通有取样支管(2)，所述取样支管(2)的末端具有上控制阀门(4)，所述上控制阀门(4)的出料口上安装有上进料连接管(5)，所述上进料连接管(5)的另一端与称量斗(6)的进料口相连通，称量斗(6)的出料口上安装有连通管B(14)，连通管B(14)的末端接入集料罐(17)内，所述称量斗(6)具有称重传感器(12)，所述称重传感器(12)与上位机通讯连接。
  2. 根据权利要求1所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：所述粉末成品出料管(1)具有上倾斜管段、中竖直管段和下倾斜管段，所述取样支管(2)与竖直面具有一定夹角，粉末成品出料管(1)的上倾斜管段与竖直面之间的竖直角和粉末成品出料管(1)与竖直面之间的竖直角，其角度相等，形成人字型。
  3. 根据权利要求2所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：所述称量斗(6)的出料口上具有星型出料(7)，所述星型出料(7)的出料口上具有双刀滑板阀(8)，所述双刀滑板阀(8)的第一出口上连接有连通管A(13)，第二出口上连接有连通管B(14)，所述连通管A(13)的末端连接下控制阀门(9)，下控制阀门(9)的出口连接下连接管道(11)，所述下连接管道(11)的另一端与粉末成品出料管(1)相连通，所述连通管B(14)的末端连接集料罐(17)。
  4. 根据权利要求3所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：所述上进料连接管(5)为波纹管。
  5. 根据权利要求4所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：所述取样支管(2)和下连接管道(11)内分别设置有螺旋输送装置A(3)和螺旋输送装置B(10)，所述连通管A(13)和连通管B(14)上设置有微波固体流量开关A(15)和微波固体流量开关B(16)，所述微波固体流量开关A(15)和微波固体流量开关B(16)均与上位机通讯连接。
  6. 根据权利要求5所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：所述下连接管道(11)与竖直面具有一定夹角，粉末成品出料管(1)的下倾斜管段与竖直面之间的竖直角和粉末成品出料管(1)与竖直面之间的竖直角，其角度相等，形成倒人字型。
  7. 根据权利要求6所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：所 述粉末成品出料管(1)、取样支管(2)和下连接管道(11)由不锈钢材质制成。
  8. 根据权利要求7所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：所述微波固体流量开关A(15)通过微波固体流量开关安装座，安装在连通管A(13)上，所述微波固体流量开关安装座包括焊接在连通管A(13)上的连套管(18)，所述连套管(18)内具有一内壁阶梯台A，所述连套管(18)内插接有内插管(19)，所述内插管(19)具有与内壁阶梯台A相配合的外壁阶梯台以及内壁阶梯台，内壁阶梯台A相配合的外壁阶梯台之间具有复位压缩弹簧(20)，所述微波固体流量开关A(15)的上部具有外螺纹，所述通过外螺纹与连套管(18)的上端螺纹连接，微波固体流量开关A(15)的中部具有与内壁阶梯台相配合的外壁阶梯台B。
  9. 根据权利要求8所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：所述内插管(19)的外壁上硫化有橡胶。
  10. 根据权利要求9所述的2-氯-5-三氟甲基吡啶生产用成品检测取样装置，其特征在于：所述利用该取样装置进行取样的方法，包括如下步骤：
    步骤1，打开螺旋输送装置A(3)、上控制阀门(4)、星型出料(7)、双刀滑板阀(8)的左侧闸门、下控制阀门(9)及螺旋输送装置B(10)，粉末成品出料管(1)内的成品物料从粉末成品出料管(1)经取样支管(2)、称量斗(6)、连通管A(13)、下连接管道(11)流回粉末成品出料管(1)，实现物料的内循环，当微波固体流量开关A(15)检测到物料流经连通管A(13)内后，传递给上位机；
    据设定的延时时间参数，关闭双刀滑板阀(8)的左侧闸门、下控制阀门(9)和螺旋输送装置B(10)，开启双刀滑板阀(8)的右侧闸门，物料进入集料罐(17)内，当微波固体流量开关B(16)检测到物料流经连通管B(14)内后，传递给上位机；
    称重传感器(12)开始采集流经称量斗(6)内的物料重量，当达到需要采集的物料重量时，传递给上位机，上位机控制螺旋输送装置A(3)、上控制阀门(4)关闭。
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