WO2008092381A1 - Procédé et dispositif d'échantillonnage de poudre par transfert pneumatique à partir d'une distance moyenne-longue - Google Patents

Procédé et dispositif d'échantillonnage de poudre par transfert pneumatique à partir d'une distance moyenne-longue Download PDF

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Publication number
WO2008092381A1
WO2008092381A1 PCT/CN2008/000184 CN2008000184W WO2008092381A1 WO 2008092381 A1 WO2008092381 A1 WO 2008092381A1 CN 2008000184 W CN2008000184 W CN 2008000184W WO 2008092381 A1 WO2008092381 A1 WO 2008092381A1
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WIPO (PCT)
Prior art keywords
sampling
powder
sample
quantitative
pipe
Prior art date
Application number
PCT/CN2008/000184
Other languages
English (en)
French (fr)
Inventor
Fangming Zhong
Jianyu Wang
Original Assignee
Bestway Industrial Equipment Co., Ltd.
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Filing date
Publication date
Application filed by Bestway Industrial Equipment Co., Ltd. filed Critical Bestway Industrial Equipment Co., Ltd.
Publication of WO2008092381A1 publication Critical patent/WO2008092381A1/zh

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/04Conveying materials in bulk pneumatically through pipes or tubes; Air slides
    • B65G53/06Gas pressure systems operating without fluidisation of the materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/14Suction devices, e.g. pumps; Ejector devices
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/02Devices for withdrawing samples
    • G01N1/10Devices for withdrawing samples in the liquid or fluent state
    • G01N1/20Devices for withdrawing samples in the liquid or fluent state for flowing or falling materials

Definitions

  • the present invention relates to a powder sample sampling device and method, and more particularly to a sampling device and method for a medium and long distance powder using a pneumatic conveying method. Background technique
  • Pneumatic conveying technology is widely used in petroleum, chemical, metallurgy, building materials, food and other fields. It has many advantages such as low energy consumption, high degree of automation, long-term continuous operation, and low environmental pollution. It is an advanced material suitable for bulk material transportation. technology. However, there are no micro pneumatic conveying devices at present, and there is no pneumatic conveying device for sampling. Summary of the invention
  • the technical problem to be solved by the present invention is to provide a long-distance sampling device and method for powder in the prior art, which can collect the particles and powder samples in the powder silo and the powder tube of the industrial site and send them to COSCO.
  • a specific place such as a laboratory or an instrument, and separating the carrier gas and the powder sample into a quantitative sample suitable for measurement and retention, the sample can be continuously collected by the program control, and the sample can be sent to a suitable instrument.
  • the technical proposal of the present invention is to provide a medium and long distance powder sampling device using a pneumatic conveying method, comprising a quantitative sampling device, and a sampling head mounted on the powder or powder tube, and further comprising one end connected to the sampling head And the other end is connected to the conveying pipe of the quantitative sampling device.
  • the sampling head is a micro sending tank
  • the micro sending tank is provided by a feeding port, a T-type pneumatic three-way ball valve, a tank body, an intake valve, and an out The material tube and the boiling plate are formed.
  • the T-type pneumatic three-way ball valve is connected with a feeding port, a discharging port and a tank body.
  • One end of the intake valve is connected to the carrier gas inlet, and the other end is connected to the tank body via a boiling plate.
  • the sampling head is a suction nozzle
  • the suction nozzle is composed of a feeding port and a nozzle sleeve which is sleeved on the feeding port.
  • the sampling head is a gas-solid injector
  • the gas-solid injector is composed of a feed port, an intake valve, a gas-solid injector body, and a discharge.
  • the tube is constructed such that the inlet port, the intake valve and the discharge pipe are connected to the gas-solid injector body.
  • the quantitative sampling device is a pipe switching quantitative sampling device or a cyclone separation quantitative sampling device.
  • the pipe switching quantitative sampling device comprises an L-type pneumatic three-way ball valve, a sampling quantitative pipe, a T-type pneumatic three-way ball valve, and the sampling quantitative pipe is connected Between the T-type pneumatic three-way ball valve and the L-type pneumatic three-way ball, the L-type pneumatic three-way ball valve is also connected with a conveying pipe and a waste sample pipe, and the T-type pneumatic three-way ball valve is also connected with a waste sample pipe and a sampling port.
  • the cyclone separating and quantitative sampling device comprises a cyclone separator, a dosing cup, a rotating electric machine, a discharging valve, a discharging pipe, the conveying pipe,
  • the discharge pipe is connected to the cyclone separator, the dosing cup is placed above the discharge pipe, and the rotary motor is connected to the dosing cup through a transmission device.
  • the carrier gas is air or nitrogen which removes water and degreases.
  • the conveying pipe is a metal or plastic pipe having a diameter of 1 mm to 30 mm.
  • the powder sample has a sampling distance of 50 to 1000 m.
  • a medium to long distance sampling method for powder using a pneumatic conveying method comprising the steps of:
  • the pneumatic conveying method includes three types: a suction type pneumatic conveying method using a suction nozzle, a pressure feeding type pneumatic conveying method using a micro sending tank, and a gas using the gas.
  • a gas-solid injection conveying method for solid injectors is included in the above powder sampling method of the present invention.
  • the manner in which the quantitative sampling device performs sampling includes two methods: a method of quantitatively sampling the pipe switching and a mode of quantitative sampling by the cyclone separation.
  • the pipe When the pipe is used for quantitative sampling, when the mixture of the powder sample and the carrier gas from the sampling head is switched through the pipeline to the quantitative sampling device, the device switches from the pneumatic conveying pipe to a fixed length pipe, the gas inside the pipe.
  • the powder sample is naturally separated at rest, and the powder sample is quantitatively separated according to the volume of the fixed length pipe.
  • the pneumatic sample conveyed by the pneumatic force passes through the cyclone separator, the powder sample is separated, and falls into a quantification cup, which is a volume of the rotatable container, when the dosing cup rotates 180 After the degree, the cup mouth is completely facing downward, the powder sample in the cup falls into the crucible, and a sampling is completed, and the volume of the dosing cup is determined. Therefore, the weight of the powder sample dropped from the dosing cup is also determined.
  • a quantification cup which is a volume of the rotatable container
  • the medium and long distance powder sampling device and method using the pneumatic conveying method provided by the invention have the following beneficial effects compared with the prior art: the long-distance sampling can be performed, the sampling can be quantitatively and regularly, and the sampling can be fully automated. Suitable for automatic measurement of instruments. Micro-pneumatic conveying is used for sampling, so that powder samples can be sampled for remoteization and automation. BRIEF DESCRIPTION OF THE DRAWINGS:
  • FIG. 1 is a schematic structural view of an embodiment of a powder sampling device of the present invention
  • FIG. 2 is a schematic structural view of a gas-solid injector
  • Figure 3 is a schematic view showing the structure of the nozzle
  • Figure 4 is a schematic structural view of the micro transmission tank in a first working state
  • Figure 5 is a schematic structural view of the micro transmission tank in a second working state
  • FIG. 6 is a schematic structural view of a pipe switching quantitative sampling device in a first working state
  • FIG. 7 is a schematic structural view of a pipe switching quantitative sampling device in a second working state
  • FIG. 8 is a schematic structural view of a pipe switching quantitative sampling device in a third working state
  • Figure 9 is a schematic view showing the structure of the cyclone separation quantitative sampling device in the first working state
  • Figure 10 is a structural schematic view of the cyclone separation quantitative sampling device in the second working state.
  • 1 to 10 are as follows: 1 a powder silo or powder tube; 2 - carrier gas; 3 - transport pipeline; 4 a sampling head; 5 - quantitative sampling device; 6 - waste bin; 7 - waste sample pipe; 4-301—Gas-solid injector inlet; 4-302 ⁇ Solid-injector intake valve; 4-303—Gas-solid injector body; 4-304—Discharge pipe; 4-201—Nozzle feed 4-202—nozzle casing; 4-102—micro-transport tank inlet; 4-103 one T-type pneumatic three-way ball valve; 4-104—micro-transport tank body; 4-105—micro-transfer tank Discharge pipe
  • 5-107 Serial port
  • 5-201 Cyclone separator
  • 5-203 Quantification cup
  • 5-205 Rotary motor
  • 5-206 One discharge valve
  • 5-207 Discharge tube
  • 5-208 ⁇ .
  • FIG. 1 is a schematic structural view of an embodiment of a powder sampling device of the present invention, which comprises a powder or powder tube 1, a carrier gas 2, a delivery pipe 3, a sampling head 4, a quantitative sampling device 5, a waste bin 6, and a waste sample tube 7
  • the sampling head 4 is mounted on the powder bin or the powder tube 1, and the delivery pipe 3 is connected to the sampling head 4 and the quantitative sampling device 5, and the waste bin 6 is connected to the quantitative sampling device 5 through the waste sample tube 7.
  • FIG. 2 is a schematic structural view of a gas-solid injector as a sampling head, which includes a gas-solid injector inlet 4-301, a gas-solid injector intake valve 4-302, a gas-solid injector body 4-303, and a discharge.
  • Tube 4-304, gas-solid injector inlet 4-301, gas-solid injector inlet valve 4-302, and discharge tube 4-304 are coupled to gas-solid injector body 4-303.
  • FIG 3 is a schematic view showing the structure of the suction nozzle as the sampling head.
  • the suction nozzle includes the nozzle inlet port 4-201 and the nozzle sleeve 4-202, and the nozzle sleeve 4-202 is placed on the inlet port 4-201.
  • the micro transmission tank includes a micro transmission tank inlet port 4-102, a T-type pneumatic three-way ball valve 4-103, a micro transmission tank body 4-104, and a micro transmission tank discharge tube 4-105.
  • boiling plate 4-106 carrier gas inlet 4-107, micro-transport tank intake valve 4-108, three-way pneumatic ball valve connected to micro-sending tank inlet 4-102, micro-sending tank discharge tube 4-105, miniature Send tank body 4-104, boiling plate 4-106 placed in micro-sending tank
  • the other end of the micro-transport tank intake valve 4-108 is connected to the carrier and gas inlet 4 - 10 7 .
  • Fig. 6, Fig. 7 and Fig. 8 are schematic structural views of three working states of the pipe switching quantitative sampling device.
  • the pipe switching quantitative sampling device includes an L-type pneumatic three-way ball valve 5-102, a sampling quantitative tube 5-103, a T-type pneumatic three-way ball valve 5-105, and a sampling port 5-107.
  • the sampling quantitative tube 5-103 is connected with a T-type pneumatic three-way ball valve 5-105 and an L-type pneumatic three-way ball valve 5-102, and a L-type pneumatic three-way ball valve 5-102 is also connected with a conveying pipe 3 and a waste sample pipe 7, T
  • the pneumatic three-way ball valve 5-105 is also connected with a waste sample tube 7 and a sampling port 5-107, and a lower end of the sampling port 5-107 is provided with a crucible 5-106.
  • the cyclone separation quantitative sampling device comprises a cyclone separator 5-201, a dosing cup 5-203, a rotary electric machine 5-205, a discharge valve 5-206, a conveying pipe 3, a waste sample pipe 7, and a discharge device
  • the material valve 5-206 and the discharge pipe 5-207 are connected to the cyclone 5-201.
  • Embodiment 1 The method of controlling the various wide doors, using the pressure-fed pneumatic conveying powder, and the pipe switching quantitative sampling by means of program control, the working process is as follows:
  • the micro-transfer tank is in the first working state, and the micro-transport tank three-way pneumatic ball valve 4-103 acts to make the sample enter the micro-transfer tank body 4-104 from the upper part of the micro-transport tank inlet 4-102, T-type.
  • the pneumatic three-way ball valve 4-103 is re-actuated, in the second working state as shown in Fig.
  • the micro-transport tank intake valve 4-108 acts, and the carrier gas enters the micro-transport tank body 4- from the carrier gas inlet 4-107 104 with powder sample, through the pipeline 3 to the pipeline switching quantitative sampling device, the pipeline switching quantitative sampling action process is shown in Figure 6, 7, 8, the normal state that the second working state is shown in Figure 7, from the micro-sending tank
  • the powdery sample carried by the carrier gas 2 is transported from the conveying pipe 3 through the L-shaped pneumatic three-way ball 5-102 to the waste sample pipe 7.
  • Example 2 Controlling various components in a program-controlled manner, using gas-solid injector sampling head force
  • the method of quantitative sampling of conveying and cyclone separation is as follows:
  • the gas-solid injector intake valve 4-302 operates, and the carrier gas enters the gas-solid injector body 4-303.
  • the powder sample is fed from the gas-solid injector due to the suction of the gas-solid injector.
  • the mouth 4-301 enters the pneumatic conveying system, so that the carrier gas carries the powder sample from the conveying pipe 3 to the quantitative sampling device 5, and the quantitative sampling device adopts a cyclone and a quantitative cup structure, as shown in Figs.
  • the specific implementation manner is as follows: As shown in FIG.
  • the powder sample from the conveying pipe 3 and the carrier gas enter the cyclone separator 5-201 of the cyclone separation and sampling device in the first working state (at this time, the dosing cup opening is upward), after passing through After the cyclone separation, the powder sample falls, and a part of the powder sample falls into the dosing cup 5-203 shown in Fig. 9.
  • the rotary motor 5-205 operates, and the cyclone separation quantitative sampling device becomes The second working state shown in Fig.
  • Embodiment 3 The method of controlling each component by means of program control, using suction-type pneumatic conveying, cyclone separation and quantitative sampling, the working process is as follows:
  • the nozzle sucks the powder sample into the inlet 4-201 of the nozzle, and the carrier gas enters the inlet 4-201 of the casing from the nozzle sleeve 4-202, and the carrier gas carries the powder.
  • the sample is taken from the delivery line 3 to the quantitative sampling device 5, which uses a cyclone and a metering cup structure, see Figures 9 and 10.
  • the specific implementation manner is as follows: As shown in FIG.
  • the powder sample and the carrier gas from the conveying pipe 3 enter the cyclone separator 5-201 of the cyclone separation and sampling device in the first working state (at this time, the dosing cup 5-203 opens upward)
  • the powder sample falls, and a part of the powder sample falls into the measuring cup 5-203 shown.
  • the rotary motor 5-205 operates, and the cyclone separation quantitative sampling device is formed.
  • the second working state shown in Fig. 10 that is, the dosing cup 5-203 is opened downward, the powder sample falls into the crucible 5-208 through the discharge pipe 5-207, the exhaust gas enters the waste sample pipe 7, and the excess powder sample
  • the discharge valve 5-206 is discharged, thus completing a sampling operation.
  • Sample control can be used continuously.

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Description

采用气力输送方式中远距离对粉状物取样装置及方法
技术领域
本发明涉及粉料样品取样装置及方法,更具体地说,涉及一种采用气力输 送方式的中远距离粉状物的取样装置及方法。 背景技术
工业上采集颗粒、粉料样品一般采用螺旋取样器,或负压取样器等在现场 取样, 然后再把样品由人工送回实验室测定。
气力输送技术广泛应用于石油、 化工、 冶金、 建材、 粮食等领域, 具有能 耗低、 自动化程度高、 可长期连续运行、 环境污染小等诸多优点, 是最适合散 料输送的一种先进的技术。但目前尚未有微型的气力输送装置,更没有用于取 样的气力输送装置。 发明内容
本发明要解决的技术问题是,针对现有技术上述缺陷,提供一种粉状物中 远距离取样装置及方法, 能把工业现场的粉仓和粉管中的颗粒、粉状样品采集 送到中远距离的某一特定地方,如实验室或仪器中, 并把载气和粉状样品分离 出定量的适合测定、保留的样品, 利用程序控制能不断地采集样品, 把样品送 到合适的仪器可实现自动分析。
本发明的技术方案是,提供一种采用气力输送方式的中远距离对粉状物取 样装置, 包括定量取样装置, 以及安装于粉仓或粉管上的采样头, 还包括一端 连接所述采样头、 另一端连接所述定量取样装置的输送管道。
在本发明采用气力输送方式的中远距离对粉状物取样装置中,所述采样头 为微型发送罐, 微型发送罐由进料口、 T型气动三通球阀、 罐体、 进气阀、 出 料管、 沸腾板构成, T型气动三通球阀上连接有进料口、 出料口、 罐体, 进气 阀的一端连接载气进口, 另一端经沸腾板与罐体相连。
1 确认本 在本发明的采用气力输送方式的中远距离对粉状物取样装置中,所述采样 头为吸嘴, 吸嘴由进料口和套在进料口上的吸嘴套管构成。
在本发明的采用气力输送方式的中远距离对粉状物取样装置中,所述采样 头为气固喷射器, 气固喷射器由进料口、进气阀、 气固喷射器本体、 出料管构 成, 所述进料口、 进气阀和出料管连接在所述气固喷射器本体上。
在本发明的采用气力输送方式的中远距离对粉状物取样装置中,所述的定 量取样装置是管道切换定量取样装置或旋风分离定量取样装置。
在本发明的采用气力输送方式的中远距离对粉状物取样装置中, 所述管 道切换定量取样装置包括 L型气动三通球阀、取样定量管、 T型气动三通球阀, 取样定量管连接在 T型气动三通球阀和 L型气动三通球阔之间, L型气动三通 球阀上还连接有输送管道和废样品管, T型气动三通球阀上还连接有废样品管 和取样口。
在本发明的采用气力输送方式的中远距离对粉状物取样装置中, 所述旋 风分离定量取样装置包括旋风分离器、 定量杯、 旋转电机、 放料阀、 出料管, 所述输送管道、放料阔、 出料管连接在旋风分离器上, 所述定量杯置于出料管 的上方, 旋转电机通过传动装置与定量杯相连。
在上述本发明中,所述载气为除水除油的空气或氮气。
在上述本发明中,所述输送管道为直径为 1 毫米至 30毫米的金属或塑料 管。
在上述本发明中,所述粉状样品的取样距离为 50-1000米。
根据本发明的另一方面, 提供一种采用气力输送方式的中远距离对粉状 物取样方法, 包括下列步骤:
S1: 在粉管或粉仓安装采样头;
S2: 粉状样品通过进料口进入采样头;
S3: 向采样头送入载气,把采样头里面的粉状样品用气力输送的方式通过 输送管道输送到中远距离的指定位置;
S4: 从送到指定位置的粉状样品中,用定量取样装置分离出合适重量的粉 状样品; 定量取到符合要求的粉状样品后, 多余的粉状样品送入废料仓。 在本发明上述粉状物取样方法中,所述气力输送的方式包括三种:使用吸 嘴来输送的吸送式气力输送方式、使用微型发送罐来输送的压送式气力输送方 式、 使用气固喷射器来输送的气固喷射输送方式。
在本发明上述粉状物取样方法中, 所述步骤 S3中, 定量取样装置进行取 样的方式包括两种: 管道切换定量取样的方式和旋风分离定量取样的方式。
采用管道切换定量取样的方式时,当采样头过来的粉状样品与载气的混合 物经过管道切换定量取样装置时,其装置从气力输送的管道中切换出一段固定 长度的管道, 管道里面的气体和粉状样品在静止状态下自然分离,根据固定长 度的管道的体积定量的分离出粉状样品。
采用旋风分离定量取样的方式时,气力输送过来的粉状样品通过旋风分离 器, 粉状样品分离下来, 落到一个定量杯中, 定量杯是一个一定体积的可旋转 容器, 当定量杯旋转 180度后, 杯口完全朝下, 杯中的粉状样品落到坩埚中, 完成一次取样, 定量杯的体积确定, 因此, 从定量杯中落下的粉状样品重量也 确定。
实施本发明提供的一种采用气力输送方式的中远距离对粉状物取样装置 和方法, 与现有技术相比有以下有益效果:可以远距离取样, 可以定量、 定时 取样, 可以全自动取样, 适合于仪器自动测定时使用。实现了把微型气力输送 用于取样, 使粉状样品取样实现远程化、 自动化。 附图说明:
图 1是本发明粉状物取样装置实施例的结构示意图;
图 2是气固喷射器的结构示意图;
图 3是吸嘴的结构示意图;
图 4是微型发送罐在第一工作状态的结构示意图;
图 5是微型发送罐在第二工作状态的结构示意图;
图 6是管道切换定量取样装置在第一工作状态的结构示意图;
图 7是管道切换定量取样装置在第二工作状态的结构示意图;
图 8是管道切换定量取样装置在第三工作状态的结构示意图; 图 9是旋风分离定量取样装置在第一工作状态的结构示意图; 图 10是旋风分离定量取样装置在第二工作状态的结构示意图。 具体实施方式
图 1至图 10中标号说明如下: 1 一粉仓或粉管; 2—载气; 3—输送管道; 4一采样头; 5—定量取样装置; 6—废料仓; 7—废样品管; 4-301—气固喷射 器进料口; 4-302~ ^固喷射器进气阀; 4-303—气固喷射器本体; 4-304—出料 管; 4-201—吸嘴进料口; 4-202—吸嘴套管; 4-102—微型发送罐进料口; 4-103 一 T型气动三通球阀; 4-104—微型发送罐罐体; 4-105—微型发送罐出料管;
4- 106—沸腾板; 4-107—载气进口; 4-108—微型发送罐进气阔; 5-102— L 型 气动三通球阀; 5-103—取样定量管; 5-105— T型气动三通球闽; 5-106—坩埚;
5- 107—取样口; 5-201—旋风分离器; 5-203—定量杯; 5-205—旋转电机; 5-206 一放料阀; 5-207—出料管; 5-208—坩埚。
图 1 是本发明粉状物取样装置实施例的结构示意图, 其包括粉仓或粉管 1、 载气 2、 输送管道 3、 采样头 4、 定量取样装置 5、 废料仓 6、 废样品管 7, 采样头 4安装在粉仓或粉管 1上,输送管道 3连接采样头 4和定量取样装置 5, 废料仓 6通过废样品管 7与定量取样装置 5相连接。
图 2是采用气固喷射器作为采样头的结构示意图, 其包括气固喷射器进 料口 4-301、 气固喷射器进气阀 4-302、 气固喷射器本体 4-303、 出料管 4-304, 气固喷射器进料口 4-301、 气固喷射器进气阀 4-302和出料管 4-304连接在气 固喷射器本体 4-303上。
图 3 是采用吸嘴作为采样头的结构示意图, 吸嘴包括吸嘴进料口 4-201 和吸嘴套管 4-202, 吸嘴套管 4-202套在进料口 4-201上。
图 4和图 5是微型发送罐的两种工作状态的结构示意图。 由图 4和图 5 可知, 微型发送罐包括微型发送罐进料口 4-102、 T型气动三通球阀 4-103、微 型发送罐罐体 4-104、微型发送罐出料管 4-105、沸腾板 4-106、载气进口 4-107、 微型发送罐进气阀 4-108, 三通气动球阀连接微型发送罐进料口 4-102、 微型 发送罐出料管 4-105、微型发送罐罐体 4-104,沸腾板 4-106置于微型发送罐进 气阀 4-108与微型发送罐罐体 4-104之间, 微型发送罐进气阀 4-108的另一端 连接载、气进口 4-107
图 6、图 7和图 8是管道切换定量取样装置的三种工作状态的结构示意图。 管道切换定量取样装置包括 L型气动三通球阀 5-102、 取样定量管 5-103、 T 型气动三通球阀 5-105、取样口 5-107。取样定量管 5-103连接 T型气动三通球 阀 5-105和 L型气动三通球阀 5-102, L型气动三通球阀 5-102上还连接有输 送管道 3和废样品管 7, T型气动三通球阀 5-105上还连接有废样品管 7和取 样口 5-107, 取样口 5-107的下端置有坩锅 5-106。
图 9和图 10是旋风分离定量取样装置的两种工作状态的结构示意图。 由 图 9和图 10可知,旋风分离定量取样装置包括旋风分离器 5-201、定量杯 5-203、 旋转电机 5-205、 放料阀 5-206, 输送管道 3、 废样品管 7、 放料阀 5-206、 出 料管 5-207连接在旋风分离器 5-201上。
实施例 1 : 用程序控制的方式控制各个阔门、 采用压送式气力输送粉末、 管道切换定量取样的方式, 其工作过程如下:
如图 4, 微型发送罐处于第一工作状态, 微型发送罐三通气动球阀 4-103 动作, 使样品从微型发送罐进料口 4-102上部进入微型发送罐罐体 4-104, T 型气动三通球阀 4-103再动作, 处于如图 5所示的第二工作状态, 微型发送罐 进气阀 4-108动作, 载气从载气进口 4-107进入微型发送罐罐体 4-104带着粉 状样品,经过输送管道 3到管道切换定量取样装置,管道切换定量取样动作过 程见图 6、 7、 8, 正常状态即第二工作状态如图 7所示, 从微型发送罐过来的 载气 2带着的粉状样品从输送管道 3经 L型气动三通球阔 5-102至废样品管 7, 取样时, 当粉状样品正经过 L型气动三通球阀 5-102时, L型气动三通球阀 5-102动作,成图 6所示的第一工作状态,经过数秒钟, L型气动三通球阀 5-102 再动作, 重回图 7所示的第二工作状态, 这时取样定量管 5-103存有一定量的 粉状样品,然后气动 T型三通球阀 5-105动作,处于图 8所示的第三工作状态, 把粉状样品放入坩埚 5-106, 这样完成一次取样动作。 利用程序控制可以不断 地反复取样。
实施例 2: 用程序控制的方式控制各个部件、 采用气固喷射器采样头气力 输送、 旋风分离定量取样的方式, 其工作过程如下:
如图 2所示, 气固喷射器进气阀 4-302 动作, 载气进入气固喷射器本体 4-303, 因为气固喷射器的抽吸作用, 粉状样品从气固喷射器进料口 4-301 进 入气力输送系统, 这样载气就带着粉状样品从输送管道 3到定量取样装置 5, 此定量取样装置采用旋风分离器加定量杯结构,见图 9、 10。具体执行方式是: 如图 9, 从输送管道 3来的粉状样品与载气进入处于第一工作状态的旋风分离 定量取样装置的旋风分离器 5-201 (此时定量杯开口向上), 经过旋风分离后, 粉状样品落下来, 其中一部分粉状样品落入图 9所示的定量杯 5-203中, 接受 粉状样品完成后, 旋转电机 5-205动作, 旋风分离定量取样装置成了图 10所 示的第二工作状态, 即定量杯 5-203开口向下, 粉状样品经过出料管 5-207落 入坩埚 5-208, 载气进入废样品管 7, 多余的粉状样品经放料阀 5-206放掉, 这样完成一次取样动作,利用程序控制可以不断地取样。
实施例 3: 用程序控制的方式控制各个部件、 采用吸送式气力输送、 旋风 分离定量取样的方式, 其工作过程如下:
如图 3, 吸嘴将粉状样品吸入吸嘴的进料口 4-201 中, 载气从吸嘴套管 4-202进入套管的进料口 4-201中, 载气就带着粉状样品从输送管道 3到定量 取样装置 5, 此定量取样装置采用旋风分离器加定量杯结构, 见图 9、 10。 具 体执行方式是: 如图 9, 从输送管道 3来的粉状样品与载气进入处于第一工作 状态的旋风分离定量取样装置的旋风分离器 5-201 (此时定量杯 5-203开口向 上), 经过旋风分离后, 粉状样品落下来, 其中一部分粉状样品落入所示的定 量杯 5-203中, 接受粉状样品完成后, 旋转电机 5-205动作, 旋风分离定量取 样装置成了图 10所示的第二工作状态, 即定量杯 5-203开口向下, 粉状样品 经过出料管 5-207落入坩埚 5-208, 废气进入废样品管 7, 多余的粉状样品经 放料阀 5-206放掉, 这样完成一次取样动作。 利用程序控制可以不断地取样。

Claims

权 利 要 求
1、 一种采用气力输送方式中远距离对粉状物取样装置, 其特征在于, 包括 定量取样装置 (5), 以及安装于粉仓或粉管 (1 ) 上的采样头 (4), 还包括一 端连接所述采样头(4)、 另一端连接所述定量取样装置(5) 的输送管道(3 )。
2、根据权利要求 1中所述的采用气力输送方式中远距离对粉状物取样装置, 其特征在于,所述采样头 (4)为微型发送罐,所述微型发送罐由进料口(4-102)、 T型气动三通球阀(4-103 )、罐体 (4-104)、进气阀 (4-108)、 出料管(4-105)、 沸腾板(4-106)构成, T型气动三通球阀 (4-103 )上连接有进料口 (4-102)、 出料管(4-105)、罐体(4-104),进气阀(4-108)的一端连接载气进口(4-107), 另一端经沸腾板 (4-106) 与罐体 (4-104) 相连。
3、根据权利要求 1中所述的采用气力输送方式中远距离对粉状物取样装置, 其特征在于, 所述采样头 (4) 为吸嘴, 所述吸嘴由进料口 (4-201 )和套在进 料口 (4-201 ) 上的吸嘴套管 (4-202) 构成。
4、根据权利要求 1中所述的采用气力输送方式中远距离对粉状物取样装置, 其特征在于,所述采样头 ( 4 )为气固喷射器,所述气固喷射器由进料口( 4-301 )、 进气阀 (4-302)、 气固喷射器本体(4-303)、 出料管(4-304)构成, 所述进料 口 (4-301 )、 进气阀 (4-302) 和出料管 (4-304) 连接在所述气固喷射器本体
(4-303 ) 上。
5、 根据权利要求 1至 4中任意一项中所述的采用气力输送方式中远距离对 粉状物取样装置, 其特征在于, 所述定量取样装置 (5) 包括 L型气动三通球 阀 (5-102)、 取样定量管 (5-103)、 T型气动三通球阀 (5-105), 取样定量管
(5-103 )连接在 T型气动三通球阀 (5-105) 和 L型气动三通球阀 (5-102) 之间, L型气动三通球阀(5-102)上还连接有输送管道(3)和废样品管(7), T型气动三通球阀 (5-105) 上还连接有废样品管 (7) 和取样口 (5-107)。
6、 根据权利要求 1至 4中任意一项中所述的采用气力输送方式中远距离对 粉状物取样装置,其特征在于,所述定量取样装置 ( 5 )包括旋风分离器 ( 5-201 )、 定量杯 (5-203 )、 旋转电机 (5-205)、 放料阀 (5-206)、 出料管 (5-207), 所 述输送管道(3 )、放料阀(5-206)、出料管(5-207)连接在旋风分离器(5-201 ) 上, 所述定量杯 (5-203 )置于出料管(5-207) 的上方, 旋转电机(5-205 )通 过传动装置与定量杯 (5-203 ) 相连。
7、 一种采用气力输送方式的中远距离对粉状物取样方法, 其特征在于, 包- 括下列步骤:
S1 : 在粉管或粉仓安装采样头;
S2: 粉状样品通过进料口进入采样头;
S3: 向采样头送入载气,把采样头里面的粉状样品用气力输送的方式通过 输送管道输送到中远距离的指定位置;
S4: 从送到指定位置的粉状样品中,用定量取样装置分离出合适重量的粉 状样品; 定量取到符合要求的粉状样品后, 多余的粉状样品送入废料仓。
8、根据权利要求 7所述的采用气力输送方式的中远距离对粉状物取样方法, 其特征在于, 所述方法的步骤 S3中, 气力输送的方式包括三种: 使用吸嘴来 输送的吸送式气力输送方式、 使用微型发送罐来输送的压送式气力输送方式、 使用气固喷射器来输送的气固喷射输送方式。
9、根据权利要求 7所述的采用气力输送方式的中远距离对粉状物取样方法, 其特征在于, 所述的步骤 S4中, 定量取样装置进行取样的方式有两种: 管道 切换定量取样的方式和旋风分离定量取样的方式。
10、 根据权利要求 9 所述的采用气力输送方式的中远距离对粉状物取样方 法, 其特征在于, 采用管道切换定量取样的方式时, 当采样头过来的粉状样品 与载气的混合物经过管道切换定量取样装置时,其装置从气力输送的管道中切 换出一段固定长度的管道, 管道里面的气体和粉状样品在静止状态下自然分 离, 根据固定长度的管道的体积定量的分离出粉状样品;
采用旋风分离定量取样的方式时, 气力输送过来的样品通过旋风分离器, 粉状样品分离下来,落到一个定量杯中,定量杯是一个一定体积的可旋转容器, 当定量杯旋转 180度后, 杯口完全朝下, 杯中的样品落到坩埚中, 完成一次取 样。
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