CN208560913U - It is a kind of for flue dust weighing filter membrane pick up automatically put, conveying device - Google Patents

Abstract

The utility model belongs to environmental monitoring technology field, and in particular to it is a kind of for flue dust weighing filter membrane pick up automatically put, conveying device；Device includes bottom plate and the controller that is arranged on bottom plate, and three working positions and two check bits, respectively net filter membrane picks up position, sampling weighing position, discarded filter membrane discarding position, has modulus check bit, adopts and abandons film check bit, is equipped with sensor at working position and check bit；It is abandoned positioned at net filter membrane pickup position, sampling weighing position, discarded filter membrane and opens up through-hole respectively on the bottom plate at position and be separately connected net film bucket, filter membrane Weighing mechanism and abandoning film bucket below through-hole；Swing boom configuration and the filter membrane mechanism for picking on rotating arm are additionally provided on bottom plate；Utility model device structure is simple, and driving part is few, and filter membrane additional structure is few, it is light-weight, it is suitble to flue dust minimum discharge online auto monitoring to use, the automatic Picking of filter membrane may be implemented, it places, the movement such as discarding, and whether can detect filter membrane state in above-mentioned action process normal.

Description

It is a kind of for flue dust weighing filter membrane pick up automatically put, conveying device

Technical field

The utility model belongs to environmental monitoring technology field, and in particular to it is a kind of for flue dust weighing filter membrane pick up automatically It puts, conveying device.

Background technique

The method of monitoring smoke dust generally speaking divides gravimetric method and non-weight (equivalent) method.Non- weight (equivalent) method.It penetrates again Collimation method, optical method, a variety of methods such as electrostatic method.

The features such as non-weight (equivalent) method mostly has structure simple, meets the requirement continuously monitored, but all non-weight (equivalent) method all has the characteristics that traceability is bad, it is difficult to meet supervision/supervision monitoring requirement.

Filter membrane weight method is national standard analysis method, is suitable as supervision/supervision monitoring.But due to current filter membrane base Originally it can not clean, filter membrane must be replaced after intercepting and capturing certain flue dust, be not easy to realize automatic continuous monitoring.

With the implementation of minimum discharge, accurate On-line monitor/supervision monitoring demand of dust concentration is increasingly urgent to, due to It is related to supervision/supervision monitoring, it is necessary to have traceability is good, meets the requirement of transmission of quantity value, is based on these requirements, preferred method Should be based on gravimetric method.

When carrying out measurement of soot and dust concentration with gravimetric method, flue dust usually is intercepted and captured with filter membrane first, then, after intercepting and capturing flue dust Filter membrane weighing, and then obtain dust concentration.It is intended to realize and carries out dust concentration monitoring automatically with gravimetric method it may first have to which solution is asked Topic is exactly the automatic replacement of filter membrane, it can flue dust is intercepted and captured close to after saturation in filter membrane, it is automatic to abandon useless film, and more renew mould.

About the automatic replacement of filter membrane, there are also patents to be related to.Chinese utility model patent " replace automatically by a kind of filter membrane Device " disclose a kind of method of filter membrane replaced automatically, a kind of side that filter membrane casket is pushed using ball-screw of the patent notes Method.But the patent does not describe to understand the structure of filter membrane casket, does not record and how to push filter membrane casket, and how filter membrane casket detects in place, How the filter membrane casket being finished is disposed.

Chinese utility model patent " the air particle Automatic change film sampler device based on station design method " is open It is a kind of for the sampler of atmospheric sampling and the method for filter membrane replaced automatically, the patent by filter membrane be packaged in one have it is certain In the filter membrane collet of intensity, it is subsequently placed in filter membrane bucket, then uses manipulator clamping filter membrane clip, and be transported to sampling unit Position.

Chinese utility model patent " air particle sampling Automatic change film device and the sampler for being equipped with the device " is public A kind of method of the sampler for atmospheric sampling and filter membrane replaced automatically is opened, which is packaged in a collet for filter membrane In, filter membrane clip is then placed on filter membrane squeeze, filter membrane squeeze includes central axis, and multiple filter membrane clip supports are set on central axis Then disk, the filter membrane squeeze elevating mechanism that linear guide is constituted engage filter membrane clip tray lift to designated position by gear Horizontal rotary mechanism, filter membrane clip pallet is sent to sample bits.The patent first is that use filter membrane clip, filter membrane clip pallet, second is that Using vertical-lift, the mode of horizontal rotation send filter membrane clip pallet to sampling location.

It is above-mentioned in the prior art, although have by mechanical structure complete filter membrane apparatus for automatic change.But there are the problem of Including: is sampled for Atmospheric particulates；It is for continuous sampling, weighed off line mostly；To consider the filter such as filter membrane clip (set) Influence of the film adjunct to weighing；It is all made of the biggish filter membrane clip of structure (set), geometric dimension is larger, and impost is big, deposits The filter membrane of storage is less；Driving part is more, and structure is complicated；The requirement of online weighing is not considered mostly.

Summary of the invention

The utility model is the automatic of existing filter membrane when solving measurement on-line automatic based on gravimetric method progress dust concentration More changing device driving part is more, structure is complicated while not being able to satisfy the needs of continuous sampling, online weighing, provides a kind of based on weight The filter membrane for flue dust weighing when amount method carries out dust concentration on-line automatic measurement pick up automatically put, conveying device.

In order to solve the above technical problems, the technology employed by the present utility model is a kind of filter for flue dust weighing Film pick up automatically put, conveying device is provided with triangular in shape including bottom plate and the controller being arranged on bottom plate on the bottom plate Three working positions arranged are respectively that net filter membrane picks up position, sampling weighing position, discarded filter membrane discarding position；The net filter membrane picks up position Modulus check bit is additionally provided between sampling weighing position, sampling weighing position and discarded filter membrane abandon and be additionally provided with abandoning film between position Check bit；Pick up position positioned at net filter membrane, sampling weighing position, discarded filter membrane abandon opened up respectively on bottom plate at position through-hole and It is separately connected net film bucket, filter membrane Weighing mechanism below through-hole and abandons film bucket；Position is picked up positioned at net filter membrane, modulus check bit, is adopted Sample weighing position, abandoning film check bit, discarded filter membrane abandon offers locating slot and the side in locating slot on the bottom plate at position respectively First sensor, second sensor, 3rd sensor, the 4th sensor, the 5th sensor are respectively set at edge；

The rotating arm that can be rotated in the horizontal plane is additionally provided on the bottom plate, the rotating arm includes rotation forearm and rotation Turn postbrachium, rotating one end of postbrachium by flanged joint has motor below bottom plate, and the top of the shaft of the motor is stretched Out bottom plate and in the end and one end of rotation postbrachium by flanged joint, before rotating the other end of postbrachium by hinge and rotation One end of arm connects, and the other end for rotating forearm is connected with bracket, and it is horizontally disposed that the end of bracket is rotatably connected to central axis Bearing, described one end for being connected to motor of rotation postbrachium is located at net filter membrane and picks up among position and discarded filter membrane discarding position；It is located at Filter membrane mechanism for picking is provided on rotation forearm above net film bucket, filter membrane mechanism for picking includes filter membrane suction nozzle and is vertically arranged Telescopic conduit tube component, is provided with through-hole on the rotation forearm at filter membrane mechanism for picking, and telescopic conduit tube component passes through It rotates the through-hole on forearm and connects filter membrane suction nozzle in the bottom end of conduit tube component, the rotation between the filter membrane mechanism for picking and bearing Turn to be additionally provided with infrared transmitter on forearm；

Second sensor on the line of flange and when passing through with rotation forearm rotation on corresponding with transmitter bottom plate It is provided with the first receiver, the 4th sensor is corresponding with transmitter on the line of flange and when passing through with rotation forearm rotation Bottom plate on be provided with second receiver；

Filter membrane jacking motor is provided with below the net film bucket, filter membrane jacks motor connection filter membrane and promotes lead screw, filter membrane The one end for promoting lead screw is stretched in net film bucket by the bottom of net film bucket and is connected with horizontally disposed filter membrane supporting plate in the end, The other end connection filter membrane that filter membrane promotes lead screw promotes spindle motor, is placed with several layers filter membrane on filter membrane supporting plate；

The first sensor, second sensor, 3rd sensor, the 4th sensor, the 5th sensor, filter membrane claim Heavy-duty machine structure, infrared transmitter, the first receiver, second receiver, filter membrane mechanism for picking are connect with controller.

Working principle are as follows: it is the completion modulus with rotating arm and filter membrane mechanism for picking that net filter membrane, which picks up position,.Sampling weighing Position is the weighing that filter membrane is realized by filter membrane Weighing mechanism.

When filter membrane conveys, forearm is rotated in rotary course, can be done around hinge and be moved up and down by a small margin, by each When a operating position or detection position, sensor detects that rotating arm passes through, and signal is sent to controller.There is positioning on bottom plate Slot, when rotating arm passes through, bearing falls into locating slot, rotation forearm decline.When rotating arm leaves locating slot, bearing is detached from positioning Slot, rotation forearm rise.Pass through rotation forearm up and down, it is ensured that by nozzle pick to filter membrane can be with proper motion.Filter Film mechanism for picking.

Whether modulus check bit and abandoning film check bit are normal for detecting filter membrane pickup.Second sensor or the 4th sensor Signal in place is provided, by the transmitter being fixed on rotation forearm and the first receiver or second receiver that are fixed on bottom plate Cooperation complete filter membrane pick up whether normal signal, filter membrane pick up it is normal when, due to blocking for filter membrane, the first receiver or second Receiver can not receive the signal of transmitter transmitting, when filter membrane picks up abnormal, due to blocking for not no filter membrane, receiver or second Receiver can receive the signal of transmitter transmitting.The output signal of first receiver send controller, makes weight for controller Newly take the decision of filter membrane.

Further, the filter membrane mechanism for picking includes the suction nozzle lifting bracket being fixed on rotation forearm, the suction nozzle Lifting bracket includes the crossbearer being mutually connected vertically and vertical frame；The week of the through-hole on rotation forearm at filter membrane mechanism for picking Circle is fixedly connected with the sheathed catheter being vertically arranged；Telescopic conduit tube component includes suction nozzle conduit, and the top of suction nozzle conduit passes through Connection controls gas circuit after the sheathed catheter being fixed on rotation forearm, and the control gas circuit includes being connect by pipeline with suction nozzle conduit Suction blow dual-purpose miniature pump and the negative pressure switch for controlling miniature pump work；Suction nozzle lifting bracket corresponding with suction nozzle conduit Crossbearer on offer the through-hole passed through for suction nozzle conduit, pass through compression between suction nozzle conduit and the crossbearer of suction nozzle lifting bracket Spring connection, holddown spring are set on suction nozzle conduit, and one end of holddown spring is connected on the lateral wall of suction nozzle conduit, another Hold the bore periphery being connected on suction nozzle lifting bracket crossbearer；The lateral wall of suction nozzle conduit above rotation forearm is connected with A piece lift armature being obliquely installed upwards, lift armature pass through the vertical frame of suction nozzle lifting bracket simultaneously far from one end of suction nozzle conduit Local for fulcrum with what is contacted with vertical frame, the lower part of the one end of lift armature far from suction nozzle conduit, which is provided with, is fixed on rotation forearm On promotion electromagnet；It is also connected with wing on the lateral wall of suction nozzle conduit, on the suction nozzle lifting bracket of suction nozzle conduit also It is connected with jacking testing agency；The jacking testing agency, negative pressure switch, promotion electromagnet are connect with controller.

Further, the filter membrane suction nozzle is funnel-shaped, and the filter membrane uses circular glass fibrous filter membrane, the filter membrane Centre also adds circular polytetrafluoroethylene (PTFE) plugging sheet, and the radius of plugging sheet is not more than a quarter of filter membrane radius and is greater than The weight of the radius of filter membrane suction nozzle, plugging sheet is no more than 1 gram.

Further, the filter membrane suction nozzle is funnel-shaped, and the filter membrane uses circular glass fibrous filter membrane, the appearance of filter membrane Surface cover is equipped with netted filter membrane clip, and the filter membrane clip thickness is generally less than 0.5mm, and impost is no more than 1 gram.

Filter membrane additional structure used in above two mode is few, light-weight, is suitble to the on-line automatic prison of flue dust minimum discharge It surveys and uses.

Above-mentioned apparatus picked up automatically for the filter membrane of flue dust weighing put, the process that conveys it is as follows:

When filter membrane can continue to use, device is failure to actuate, and filter membrane samples weighing in sampling weighing position repeatedly；

When filter membrane needs replacing, the circulation of working position and check bit is: sampling weighing position -- abandoning film check bit -- is discarded Filter membrane abandons position, and -- net filter membrane picks up position -- modulus check bit -- sampling weighing position；

A, when needing replacing filter membrane, controller controls motor and rotates rotating arm, when rotating arm passes through 3rd sensor, rotation The bearing for turning forearm falls into the locating slot of bottom plate corresponding sampling weighing position, and sensor detects the signal that rotating arm passes through and send Controller；Controller issues motor stop signal, while starting filter membrane mechanism for picking, and suction is generated at suction nozzle；Suction nozzle contact Filter membrane, filter membrane mechanism for picking, which provides, has contacted filter membrane signal, and controller issues suction nozzle promotion signal, filter membrane to filter membrane mechanism for picking Mechanism for picking drives suction nozzle and inhales and promoted in the filter membrane on suction nozzle, and then, controller control motor rotates clockwise；

B, when rotating arm passes through four sensors, the 4th sensor detects the signal that rotating arm passes through and send control Device, at this point, whether controller detection abandoning film check bit second receiver signal is normal；Its process is: by being fixed on rotation forearm On transmitter emit signal, discard filter membrane pick up it is normal when, due to blocking for filter membrane, second receiver can not receive transmitter hair The signal penetrated, when filter membrane picks up abnormal, due to blocking for not no filter membrane, second receiver can receive the letter of transmitter transmitting Number, the output signal of second receiver send controller, if modulus is abnormal, controller can control corresponding mechanism and complete to take again Mould movement, if picking up, discarded filter membrane is normal, and motor driven rotating arm continues to rotate clockwise；

C, it when rotating arm passes through five sensors, rotates the bearing on forearm and falls into the corresponding discarded filter membrane discarding position of bottom plate Locating slot, the 5th sensor detects the signal that rotating arm passes through and send controller, controller receive the 5th sensor to After signal in place out, filter membrane mechanism for picking controls suction nozzle and becomes suction to blow；Meanwhile controller issues suction nozzle to filter membrane mechanism for picking Dropping signal after filter membrane is separated with suction nozzle, falls into and abandons film bucket, abandons after the completion of film, and controller control rotating arm starts to revolve counterclockwise Turn, makes abandoning film detection second receiver judge to abandon whether film is completed again by abandoning film check bit, if not completing, be repeated Abandon film movement；If it is normal to abandon filter membrane, motor driven rotating arm continues rotation counterclockwise；

D, when rotating arm passes through first sensor, the bearing on rotation forearm falls into bottom plate and corresponds to net filter membrane pickup position I Locating slot, first sensor detects the signal that rotating arm passes through and send controller, and controller receives first sensor and provides Signal in place after, controller issues motor stop signal, while filter membrane mechanism for picking generates suction at suction nozzle, and filter membrane picks up After taking normally, controller issues suction nozzle promotion signal to filter membrane mechanism for picking first, drives suction nozzle and inhales in the filter membrane on suction nozzle It is promoted, then, controller control rotating arm motor rotates clockwise.

E, when rotating arm passes through second sensor, second sensor detects the signal that rotating arm passes through and send control Whether device, the first receiver signal that controller detects modulus check bit are normal；Its process is: by being fixed on rotation forearm Transmitter emits signal, and when net filter membrane picks up normal, due to blocking for filter membrane, the first receiver can not receive the letter of transmitter transmitting Number, when filter membrane picks up abnormal, due to blocking for not no filter membrane, the first receiver can receive the signal of transmitter transmitting；The The output signal of one receiver send controller, if modulus is abnormal, controller can control corresponding mechanism, and to complete modulus again dynamic Make, if picking up, net filter membrane is normal, and motor driven rotating arm continues to rotate clockwise the filter membrane weigher sent at sampling weighing position Structure is weighed；When filter membrane at sampling weighing position needs replacing, repeatedly the step of above-mentioned a, b, c, d, e moves in circles.

Compared with prior art the utility model has the following beneficial effects:

Utility model device structure is simple, and driving part is few, and filter membrane additional structure is few, light-weight, is suitble to flue dust ultralow It discharges online auto monitoring to use, the automatic Picking of filter membrane may be implemented, place, the movement such as discarding, and above-mentioned movement can be detected Whether filter membrane state is normal in the process.The utility model can be used as a portion in minimum discharge gravimetric method emission measurement system Part uses, and meets the requirement that filter membrane when carrying out dust concentration detection based on gravimetric method needs timing replacement, it may be convenient to realize Picking up automatically for filter membrane is put and is conveyed, and the system that participates in completes fume extraction, and flue gas flow rate measures, flue gas, flue gas flow control, Humidity of flue gas measurement, the work such as Oxygen Amount in Flue Gas measurement.

Detailed description of the invention

Fig. 1 be the utility model for flue dust weighing filter membrane pick up automatically put, the top view of conveying device.

Fig. 2 be the utility model for flue dust weighing filter membrane pick up automatically put, the main view of conveying device.

Fig. 3 is the utility model observing and controlling hardware block diagram.

Fig. 4 be the utility model predominantly detect, control function flow chart.

Fig. 5 is that suction nozzle draws filter membrane schematic diagram.

Fig. 6 is that suction nozzle does not draw filter membrane schematic diagram.

Fig. 7 is filter membrane addition polymerization tetrafluoroethene plugging sheet schematic diagram.

Fig. 8 is the structural schematic diagram of filter membrane clip added by filter membrane.

It is marked in figure as follows:

1- bottom plate, 2- rotate postbrachium, 3- motor, 4- flange, 5- hinge, 6- rotation forearm, 7- sheathed catheter, 8- suction nozzle, 9- Infrared transmitter, the net film bucket of 10-, 11- bracket, 12- bearing, 13- abandoning film bucket, 14- first sensor, the first receiver of 15-, 16- second sensor, 17- filter membrane Weighing mechanism, 18- 3rd sensor, the 4th sensor of 19-, 20- second receiver, 21- Five sensors, 22- suction nozzle lifting bracket, 23- jack testing agency, and 24- promotes electromagnet, and 25- filter membrane jacks motor, 26- filter Film.

Specific embodiment

Below in conjunction with specific embodiment, the utility model is described in further detail.

Embodiment

As shown in Figure 1, it is a kind of for flue dust weighing filter membrane pick up automatically put, conveying device, including bottom plate 1 and setting exist Controller on bottom plate 1, be provided on the bottom plate 1 three working positions being triangularly arranged be respectively net filter membrane pick up position, Sampling weighing position, discarded filter membrane abandon position；The net filter membrane picks up and is additionally provided with modulus check bit between position and sampling weighing position, Sampling weighing position and discarded filter membrane, which abandon to be additionally provided between position, abandons film check bit；Positioned at net filter membrane pick up position, sampling weighing position, Through-hole is opened up respectively on bottom plate 1 at discarded filter membrane discarding position and is separately connected net film bucket 10 below through-hole, filter membrane claims Heavy-duty machine structure 17 and abandoning film bucket 13；Position is picked up positioned at net filter membrane, modulus check bit, sampling weighing position, abandons film check bit, discarded filter membrane It abandons and offers locating slot respectively on the bottom plate 1 at position and first sensor 14 is respectively set in the edge of locating slot, the Two sensors 16,3rd sensor 18, the 4th sensor 19, the 5th sensor 21；

The rotating arm that can be rotated in the horizontal plane is additionally provided on the bottom plate 1, the rotating arm includes rotation 6 He of forearm Postbrachium 2 is rotated, one end of rotation postbrachium 2 is connected with the motor 3 positioned at 1 lower section of bottom plate, the shaft of the motor 3 by flange 4 Top stretch out bottom plate 1 and connect with one end of rotation postbrachium 2 by flange 4 in the end, the other end for rotating postbrachium 2 passes through Hinge 5 is connect with one end of rotation forearm 6, and the other end of rotation forearm 6 is connected with bracket 11, the end rotation connection of bracket 11 There is the horizontally disposed bearing 12 of central axis, one end that the rotation postbrachium 2 is connect with motor 3 is located at net filter membrane and picks up position and give up Filter membrane is abandoned to abandon among position；Filter membrane mechanism for picking, filter membrane mechanism for picking are provided on the rotation forearm 6 above net film bucket 10 Including filter membrane suction nozzle 8 and the telescopic conduit tube component being vertically arranged, it is provided on the rotation forearm 6 at filter membrane mechanism for picking Through-hole, telescopic conduit tube component pass through the through-hole on rotation forearm 6 and connect filter membrane suction nozzle 8, institute in the bottom end of conduit tube component It states and is additionally provided with infrared transmitter 9 on the rotation forearm 6 between filter membrane mechanism for picking and bearing 12；

Open up fluted in the middle part of the side of the bracket 11, branch is protruded into one end that rotation forearm 6 is not connect with rotation postbrachium 2 The inside grooves of frame 11 and fixation are also fixedly connected with central axis, the bearing on the bracket 11 of the other side opposite with groove 12 inner ring fixation is set on central axis, and 12 outer ring of bearing is rotated relative to inner ring, so that bearing 12 can be on bottom plate 1 Rotation.

Second sensor 16 on the line of flange 4 and with rotation forearm 6 rotation pass through when it is corresponding with infrared transmitter 9 Bottom plate 1 on be provided with the first receiver 15, the 4th sensor 19 passes through on the line of flange 4 and with the rotation rotation of forearm 6 When corresponding with infrared transmitter 9 bottom plate 1 on be provided with second receiver 20；

The lower section of the net film bucket 10 is provided with filter membrane jacking motor 25, and filter membrane jacks motor 25 and connects filter membrane promotion silk Thick stick, one end that filter membrane promotes lead screw are stretched in net film bucket 10 by the bottom of net film bucket 10 and are connected in the end horizontally disposed Filter membrane supporting plate, the other end connection filter membrane that filter membrane promotes lead screw promotes spindle motor, several layers filter is placed on filter membrane supporting plate Film 26；

The first sensor 14, second sensor 16,3rd sensor 18, the 4th sensor 19, the 5th sensing Device 21, filter membrane Weighing mechanism 17, infrared transmitter 9, the first receiver 15, second receiver 20, filter membrane mechanism for picking with control Device connection processed.

Further, the filter membrane mechanism for picking includes the suction nozzle lifting bracket 22 being fixed on rotation forearm 6, the suction Mouth lifting bracket 22 includes the crossbearer being mutually connected vertically and vertical frame；It is logical on rotation forearm 6 at filter membrane mechanism for picking The border in hole is fixedly connected with the sheathed catheter 7 being vertically arranged；Telescopic conduit tube component includes suction nozzle conduit, the top of suction nozzle conduit Portion passes through connection control gas circuit after the sheathed catheter 7 being fixed on rotation forearm 6, and the control gas circuit includes passing through pipeline and suction nozzle Dual-purpose miniature pump and the negative pressure switch for controlling miniature pump work are blown in the suction of conduit connection；Suction nozzle corresponding with suction nozzle conduit The through-hole passed through for suction nozzle conduit, the crossbearer of suction nozzle conduit and suction nozzle lifting bracket 22 are offered on the crossbearer of lifting bracket 22 Between connected by holddown spring, holddown spring is set on suction nozzle conduit, and one end of holddown spring is connected to suction nozzle conduit On lateral wall, the other end is connected to the bore periphery on suction nozzle lifting bracket crossbearer；Suction nozzle conduit above rotation forearm 6 Lateral wall be connected with the lift armature being obliquely installed upwards, lift armature is mentioned far from one end of suction nozzle conduit across suction nozzle The vertical frame of ascending branch frame 22 is simultaneously local for fulcrum with what is contacted with vertical frame, and the lower part of the one end of lift armature far from suction nozzle conduit is arranged There is the promotion electromagnet 24 being fixed on rotation forearm 6；It is also connected with wing on the lateral wall of suction nozzle conduit, close to suction nozzle conduit Suction nozzle lifting bracket 22 on be also connected with jacking testing agency 23；The jacking testing agency 23, promotes electromagnetism at negative pressure switch Iron 24 is connect with controller.

Electromechanical, negative pressure two ways, electromechanical means are used whether above-mentioned filter membrane mechanism for picking filter membrane jacks in place are as follows: filter When film jacks, with the raising of filter membrane, the filter membrane of top layer is contacted with suction nozzle, at this moment, continues to jack, filter membrane supporting plate, filter membrane 26, Filter membrane suction nozzle 8, filter membrane suction nozzle conduit rise simultaneously.It is close or jacked in place by filter membrane when being fixed on the supravasal wing of suction nozzle When sensor, filter membrane jacks sensors in place and issues jacking signal in place to controller.Negative pressure mode: controller controls micropump It works by suction (vacuum) mode, when filter membrane suction nozzle is not in contact with filter membrane or vacuum failure, negative pressure is little in pipeline, at negative pressure switch In off-state, after filter membrane suction nozzle is contacted with filter membrane Tong Zhong top layer filter membrane, suction nozzle is plugged, and the negative pressure in pipeline increases, and is born Compress switch conducting.The jacking of two kinds of filter membranes in place whether signal in controller using with logical course processing, i.e., only there are two Signal all in the presence of, controller to filter membrane jacking motor 25 issue stop signal, jacking stop.

After filter membrane jacking motor 25 stops, controller control promotes electromagnet 24 and obtains electric, generation suction, and lift armature is close Electromagnet end is attracted, and lift armature is moved upwards far from electromagnet one end, drives filter membrane, filter membrane suction nozzle 8, filter membrane suction nozzle conduit Rise one end distance again, the filter membrane of filter membrane Tong Zhong top layer is separated with other filter membranes.

Net film bucket 10 is square structure, and lower part jacks motor 25 equipped with filter membrane, and net film bucket 10 is provided with filter membrane supporting plate.Filter membrane Direct current generator, stepper motor etc. can be used in jacking motor 25, whatsoever the motor of type, need to be by certain organisation conversion The up and down motion of filter membrane supporting plate.The movement velocity of filter membrane supporting plate is not strict with, if can control minimum movement controllably away from From 0.1mm or less.Since filter membrane 26 is relatively light, motor have passed through deceleration, also not be strict with to the power of motor.This reality Example is applied using 42BY type lead screw stepper motor.

Filter membrane 26 uses circular glass fibrous filter membrane, to be inhaled in such a way that centre installs polytetrafluoroethylene (PTFE) plugging sheet additional Part is air tight, stainless steel strip can also be used, filter membrane clip (for example being made of 0.1mm316) is made.No matter which kind of mode, filter membrane It seals up stifled or filter membrane clip thickness and is generally less than 0.5mm, therefore net filter membrane box height 50mm can place 100 filter membranes.Filter membrane It blocks and the signal of stainless steel clamp is as shown in Figure 7 and Figure 8.

Rotating arm is made of rotation forearm 6 and rotation postbrachium 2, and rotation forearm 6 and rotation postbrachium 2 are connected by hinge 5.Turn Postbrachium 2 is connect by flange 4 with motor 3, and motor 3 is deceleration DC electrical, and controller can control the motor positive and inverse, and motor is defeated The revolving speed of shaft is 15 turns/f points.Filter membrane suction nozzle 8 and filter membrane jacking testing agency are fixed on rotation forearm 6, before rotating forearm 6 End is fixed with bracket 1 and bearing 12.The effect of bearing 12 is first is that reduce the resistance of rotating arm movement, second is that corresponding on bottom plate 1 Locating slot cooperation, complete rotation 6 gauge of forearm and need to do upper and lower by a small margin movement.Magnet steel is embedded on bracket 1, cooperation is solid Be scheduled on three working positions, Hall sensor (14,16.18,19,21) on two check bits monitoring rotating arm in place whether.

Also secure infrared transmitter 9 on rotation forearm 6, infrared transmitter 9 with it is complete with the receiver that is fixed on negative It whether normal is picked up at net filter membrane and discarded filter membrane.When filter membrane picks up normal, due to blocking for filter membrane, receiver can not receive infrared The signal that transmitter 9 emits, when filter membrane picks up abnormal, due to blocking for not no filter membrane, receiver 15 can receive infrared hair The signal that emitter 9 emits.Infrared transmitting tube and infrared receiving tube is employed herein as transmitting, receiving device.Transmitting receives dress It is as shown in Figure 5 to set structural representation.

Master controller and detection, control function flow chart are as shown in Figure 4.It is embeded processor structure that master controller, which can be, At dedicated control device, be also possible to PLC, the other control systems such as industrial personal computer.It is employed herein using STM32 as the embedding of core Enter formula structure, is used as a component in minimum discharge gravimetric method emission measurement system, the communication with system master controller Using RS485 interface.Communications protocol uses MODFBUS, and the automatic of filter membrane is completed in the order that controller can receive system Replacement can also be completed film is changed, and whether there is or not filter membrane, the information of the present apparatus such as fault condition is sent to system master controller.

Sampling and weighing device are a set of relatively independent device, and sampling-can be independently repeated after being put into net filter membrane Weighing, until filter membrane meets certain discarded condition, the discarded condition of filter membrane can be the pressure difference before and after filter membrane, be also possible to hold The dust quantity of load is also possible to and the preset working time.

Claims (4)

1. it is a kind of for flue dust weighing filter membrane pick up automatically put, conveying device, which is characterized in that including bottom plate (1) and setting Controller on bottom plate (1) is provided with three working positions being triangularly arranged, respectively net filter membrane on the bottom plate (1) Pick up position, sampling weighing position, discarded filter membrane discarding position；The net filter membrane picks up and is additionally provided with modulus between position and sampling weighing position Check bit, sampling weighing position and discarded filter membrane, which abandon to be additionally provided between position, abandons film check bit；Position, sampling are picked up positioned at net filter membrane Weighing position, discarded filter membrane, which abandon, to be opened up through-hole on the bottom plate (1) at position respectively and is separately connected net film bucket below through-hole (10), filter membrane Weighing mechanism (17) and abandoning film bucket (13)；Position is picked up positioned at net filter membrane, modulus check bit, sampling weighing position, abandons film Check bit, discarded filter membrane, which abandon, to be offered locating slot on the bottom plate (1) at position respectively and sets respectively in the edge of locating slot It sets first sensor (14), second sensor (16), 3rd sensor (18), the 4th sensor (19), the 5th sensor (21)；

Be additionally provided with the rotating arm that can be rotated in the horizontal plane on the bottom plate (1), the rotating arm include rotation forearm (6) and It rotates postbrachium (2), one end of rotation postbrachium (2) is connected with the motor (3) below bottom plate (1), the electricity by flange (4) The top of the shaft of machine (3) is stretched out bottom plate (1) and is connect with one end of rotation postbrachium (2) by flange (4) in the end, rotates The other end of postbrachium (2) is connect by hinge (5) with the one end for rotating forearm (6), and the other end of rotation forearm (6) is connected with branch Frame (11), the end of bracket (11) are rotatably connected to the horizontally disposed bearing of central axis (12), the rotation postbrachium (2) and electricity One end of machine (3) connection is located at net filter membrane and picks up among position and discarded filter membrane discarding position；Rotation above net film bucket (10) It is provided with filter membrane mechanism for picking on forearm (6), filter membrane mechanism for picking includes filter membrane suction nozzle (8) and what is be vertically arranged telescopic lead Tube assembly, through-hole is provided on the rotation forearm (6) at filter membrane mechanism for picking, and telescopic conduit tube component passes through rotation forearm (6) through-hole on simultaneously connects filter membrane suction nozzle (8) in the bottom end of conduit tube component, between the filter membrane mechanism for picking and bearing (12) Infrared transmitter (9) are additionally provided in rotation forearm (6)；

Second sensor (16) on the line of flange (4) and with rotation forearm (6) rotation pass through when with infrared transmitter (9) phase Be provided with the first receiver (15) on corresponding bottom plate (1), on the line of the 4th sensor (19) and flange (4) and with before rotation Arm (6) rotation is provided with second receiver (20) on bottom plate (1) corresponding with infrared transmitter (9) when passing through；

Filter membrane jacking motor (25) is provided with below the net film bucket (10), filter membrane jacks motor (25) connection filter membrane and promotes silk Thick stick, one end that filter membrane promotes lead screw are stretched in net film bucket (10) by the bottom of net film bucket (10) and are connected with level in the end The filter membrane supporting plate of setting, the other end connection filter membrane that filter membrane promotes lead screw promote spindle motor, are placed on filter membrane supporting plate several Layer filter membrane (26)；

The first sensor (14), second sensor (16), 3rd sensor (18), the 4th sensor (19), the 5th Sensor (21), filter membrane Weighing mechanism (17), infrared transmitter (9), the first receiver (15), second receiver (20), filter membrane Mechanism for picking is connect with controller.

2. it is according to claim 1 it is a kind of for flue dust weighing filter membrane pick up automatically put, conveying device, which is characterized in that The filter membrane mechanism for picking further includes the suction nozzle lifting bracket (22) being fixed in rotation forearm (6), the suction nozzle lifting bracket It (22) include the crossbearer being mutually connected vertically and vertical frame；The week of the through-hole on rotation forearm (6) at filter membrane mechanism for picking Circle is fixedly connected with the sheathed catheter (7) being vertically arranged；Telescopic conduit tube component includes suction nozzle conduit, is worn at the top of suction nozzle conduit It crosses the sheathed catheter (7) being fixed in rotation forearm (6) and connects control gas circuit afterwards, the control gas circuit includes passing through pipeline and suction nozzle Dual-purpose miniature pump and the negative pressure switch for controlling miniature pump work are blown in the suction of conduit connection；Suction nozzle corresponding with suction nozzle conduit Offer the through-hole passed through for suction nozzle conduit on the crossbearer of lifting bracket (22), suction nozzle conduit and suction nozzle lifting bracket (22) It is connected between crossbearer by holddown spring, holddown spring is set on suction nozzle conduit, and one end of holddown spring is connected to suction nozzle and leads On the lateral wall of pipe, the other end is connected to the bore periphery on suction nozzle lifting bracket crossbearer；Suction above rotation forearm (6) The lateral wall of mouth conduit is connected with the lift armature being obliquely installed upwards, and lift armature is passed through far from one end of suction nozzle conduit The vertical frame of suction nozzle lifting bracket (22) is simultaneously local for fulcrum with what is contacted with vertical frame, the one end of lift armature far from suction nozzle conduit Lower part is provided with the promotion electromagnet (24) being fixed in rotation forearm (6)；It is also connected with wing on the lateral wall of suction nozzle conduit, Jacking testing agency (23) is also connected on the suction nozzle lifting bracket (22) of suction nozzle conduit；The jacking testing agency (23), negative pressure switch, promotion electromagnet (24) are connect with controller.

3. a kind of filter membrane for flue dust weighing according to claim 1 or 2 pick up automatically put, conveying device, feature exists In the filter membrane suction nozzle (8) is funnel-shaped, and the filter membrane (26) uses circular glass fibrous filter membrane, in the filter membrane (26) Between also add circular polytetrafluoroethylene (PTFE) plugging sheet, the radius of plugging sheet is no more than a quarter of filter membrane (26) radius and big The weight of radius in filter membrane suction nozzle (8), plugging sheet is no more than (1) gram.

4. a kind of filter membrane for flue dust weighing according to claim 1 or 2 pick up automatically put, conveying device, feature exists In the filter membrane suction nozzle (8) is funnel-shaped, and the filter membrane (26) uses circular glass fibrous filter membrane, the outer surface of filter membrane (26) It is arranged with netted filter membrane clip, the filter membrane clip thickness is generally less than 0.5mm, and impost is no more than 1 gram.