CN108310861A - Chambered pulse back-flushing bag type dust collector based on Internet of Things - Google Patents

Chambered pulse back-flushing bag type dust collector based on Internet of Things Download PDF

Info

Publication number
CN108310861A
CN108310861A CN201711410277.1A CN201711410277A CN108310861A CN 108310861 A CN108310861 A CN 108310861A CN 201711410277 A CN201711410277 A CN 201711410277A CN 108310861 A CN108310861 A CN 108310861A
Authority
CN
China
Prior art keywords
resistance
capacitance
cylinder
wireless communication
things
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201711410277.1A
Other languages
Chinese (zh)
Inventor
徐仁觉
申忠华
徐伟
张奎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JIANGSU KANGJIE ENVIRONMENTAL ENGINEERING Co Ltd
Original Assignee
JIANGSU KANGJIE ENVIRONMENTAL ENGINEERING Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGSU KANGJIE ENVIRONMENTAL ENGINEERING Co Ltd filed Critical JIANGSU KANGJIE ENVIRONMENTAL ENGINEERING Co Ltd
Priority to CN201711410277.1A priority Critical patent/CN108310861A/en
Publication of CN108310861A publication Critical patent/CN108310861A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023Pockets filters, i.e. multiple bag filters mounted on a common frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04Cleaning filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42Auxiliary equipment or operation thereof
    • B01D46/429Means for wireless communication
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42Auxiliary equipment or operation thereof
    • B01D46/44Auxiliary equipment or operation thereof controlling filtration
    • B01D46/46Auxiliary equipment or operation thereof controlling filtration automatic

Abstract

The invention discloses the chambered pulse back-flushing bag type dust collector based on Internet of Things, including newel frame, newel frame is equipped with support column, support column is equipped with cylinder, the lower section of cylinder is equipped with ash bucket component, the top of cylinder is equipped with air inlet assembly, cylinder is internally provided with several filter bags, the side of cylinder is additionally provided with purification assembly, cylinder is connected to purification assembly, the side of cylinder is equipped with middle control component, middle control component includes panel, panel is internally provided with antenna and wireless communication module, antenna is electrically connected with wireless communication module, in the chambered pulse back-flushing bag type dust collector based on Internet of Things, it can be realized by middle control component and intelligentized control method is carried out to deduster;Remote control may be implemented in cooperation wireless communication module, and in wireless communication line, the amplifying circuit formed based on triode is amplified signal, it can realize the reliable reception to signal, the reliability of remote control is improved, reasonable design of the present invention is suitble to promote the use of.

Description

Chambered pulse back-flushing bag type dust collector based on Internet of Things
Technical field
The present invention relates to deduster technical fields, and in particular to a kind of chamber pulsating back-blowing bag-type dusting based on Internet of Things Device.
Background technology
In existing chambered pulse back-flushing bag type dust collector, all has the function of intelligentized control method, some even all have remote Journey remote control capability, but in these wireless communication modules, often because apart from farther out so that the wireless remote control signals received It is weaker, to affect the remote control reliability to deduster.
Invention content
The present invention in order to overcome the above-mentioned deficiencies of the prior art, provides a kind of chamber pulsating back-blowing pocket type based on Internet of Things Deduster.
The purpose of the present invention is what is realized by using following technical scheme:
Chambered pulse back-flushing bag type dust collector based on Internet of Things, including newel frame, the newel frame are equipped with branch Dagger, the support column are equipped with cylinder, and the lower section of the cylinder is equipped with ash bucket component, and the top of the cylinder is total equipped with air inlet At the cylinder is internally provided with several filter bags, and the side of the cylinder is additionally provided with purification assembly, the cylinder and purification assembly Connection;
Wherein, the operation principle of the deduster is that air inlet assembly control gas enters the inside of cylinder, then by each Filter bag is filtered, and then gas will be discharged from purification assembly;When needing to purify filter bag, purification assembly switches mould Formula carries out reverse cleaning to filter bag, and dust will be fallen in ash bucket component, and processing is collected to dust.
The side of the cylinder is equipped with middle control component, and the middle control component includes panel, and the panel is internally provided with day Line and wireless communication module, the antenna are electrically connected with wireless communication module, and the wireless communication module includes wireless telecommunications electricity Road, the wireless communication line include integrated circuit, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, 6th resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the first capacitance, the second capacitance, third capacitance, the 4th Capacitance, the 5th capacitance, the 6th capacitance, the 7th capacitance, the 8th capacitance, the 9th capacitance, adjustable resistance, triode and photosensitive two pole The base stage of pipe, the model TDA4050 of integrated circuit, the triode is electric with first resistor and second respectively by 3rd resistor Resistance connection, and the cathode of the end and photodiode connects, the plus earth of photodiode, the first resistor and the second electricity Hinder one end ground connection of the series circuit of composition, the external 15V DC voltage power supplies of the other end, the emitter of the triode passes through the The parallel circuit ground connection of two capacitances and the 5th resistance composition, the collector of the triode pass through the external 15V direct currents of the 4th resistance Voltage source, one end ground connection of first capacitance, the external 15V DC voltage power supplies of the other end, one end of the third capacitance Ground connection, the external 15V DC voltage power supplies of the other end, one end ground connection of the 9th capacitance, the external 15V direct currents piezoelectricity of the other end Source, the collector of the triode and the 8th end of integrated circuit connect, the 6th resistance, adjustable resistance and the 7th resistance group At series circuit one end ground connection, the external 15V DC voltage power supplies of the other end, the adjustable end of the adjustable resistance and integrated electricity The second end on road connects, and the end, by the 4th capacity earth, the first end of the integrated circuit is grounded, the integrated circuit 5th end of the series circuit and integrated circuit that the 4th end is made up of the 9th resistance and the 8th resistance connects, the 7th capacitance It is in parallel with the series circuit that the 9th resistance and the 8th resistance form with the series circuit of the 8th capacitance composition, the 6th capacitance One end is grounded, and the other end is connect with the 9th resistance and the 8th resistance respectively, one end ground connection of the tenth resistance, other end difference With the 7th capacitance and the 8th capacitance connection, the external 15V DC voltage power supplies in the 6th end of the integrated circuit, the integrated circuit The 7th end pass through the 5th capacity earth.
Wherein, it can be realized by wireless communication module and remote control, in wireless communication line, light are carried out to deduster Quick diode pair remote infrared signal is received, and is then put to signal by the amplifying circuit formed based on triode Greatly, so as to realizing the reliable reception to signal;Then it enters back into integrated circuit and carries out the reliable treatments of signal, to dry It disturbs signal to be filtered, recently enter in PLC, controlled, to realize remote control.
Preferably, the air inlet assembly includes air intake pump and regulating valve, and the air intake pump is connected by regulating valve and each filter bag It is logical.
Preferably, the purification assembly includes exhaust pipe, back blowing machine and switching valve, and the back blowing machine passes through switching valve It is connected to each filter bag, the exhaust pipe is connected to by switching valve with the inside of cylinder.
Wherein, switching valve come switch outlet and purification both of which, when need purification when, back blowing machine work, into Enter to inner barrel, blowback is carried out to each filter bag;When needing dedusting, switching valve is switched to exhaust pipe, clean gas from It is discharged in exhaust pipe.
Preferably, the panel is equipped with display screen, indicator light and button.
Preferably, the inside of the panel is additionally provided with PLC, and the antenna, display screen, indicator light and button are electric with PLC Connection.
Wherein, antenna can realize the remote control to deduster;Display screen, can to the job information of deduster into Row real-time display;Indicator light can carry out real-time display to the working condition of deduster;Button, convenient for staff to dedusting Device carries out live manipulation;PLC can be realized and be carried out intelligentized control method to deduster.
The beneficial effects of the invention are as follows:In the chambered pulse back-flushing bag type dust collector based on Internet of Things, pass through middle control portion Part can be realized carries out intelligentized control method to deduster;Meanwhile coordinating wireless communication module that remote control may be implemented, moreover, In wireless communication line, the amplifying circuit formed based on triode is amplified signal, so as to realize to signal Reliable reception, improve the reliability of remote control.
Description of the drawings
The present invention will illustrate by specific example and with reference to the appended drawing, wherein:
Fig. 1 is the front view of the present invention;
Fig. 2 is the side view of the present invention;
Fig. 3 is the circuit diagram of wireless communication line of the present invention.
In figure:1. newel frame, 2. ash bucket components, 3. support columns, 4. regulating valves, 5. air intake pumps, 6. filter bags, 7. exhausts Pipe, 8. switching valves, 9. back blowing machines control component in 10., U1. integrated circuits, R1. first resistors, R2. second resistances, R3. the Three resistance, the 4th resistance of R4., the 5th resistance of R5., the 6th resistance of R6., the 7th resistance of R7., the 8th resistance of R8., the 9th electricity of R9. Resistance, the tenth resistance of R10., the first capacitances of C1., the second capacitances of C2., C3. third capacitances, the 4th capacitances of C4., the 5th capacitances of C5., C6. the 6th capacitance, the 7th capacitances of C7., the 8th capacitances of C8., the 9th capacitances of C9., RP1. adjustable resistances, VT1. triodes, VD1. Photodiode.
Specific implementation mode
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with Illustration illustrates the basic structure of the present invention, therefore it only shows the composition relevant to the invention.
As shown in Figure 1 to Figure 3, a kind of chambered pulse back-flushing bag type dust collector based on Internet of Things, including newel frame 1, The newel frame 1 is equipped with support column 3, and the support column 3 is equipped with cylinder, and the lower section of the cylinder is equipped with ash bucket component 2, The top of the cylinder is equipped with air inlet assembly, and the cylinder is internally provided with several filter bags 6, and the side of the cylinder is additionally provided with only Change assembly, the cylinder is connected to purification assembly;
Wherein, the operation principle of the deduster is that air inlet assembly control gas enters the inside of cylinder, then by each Filter bag 6 is filtered, and then gas will be discharged from purification assembly;When needing to purify filter bag 6, purification assembly is cut Mold changing formula carries out reverse cleaning to filter bag 6, and dust will be fallen in ash bucket component 2, and processing is collected to dust.
The side of the cylinder is equipped with middle control component 10, and the middle control component 10 includes panel, and the inside of the panel is set There are antenna and wireless communication module, the antenna to be electrically connected with wireless communication module, the wireless communication module includes channel radio Circuit is interrogated, the wireless communication line includes integrated circuit U1, first resistor R1, second resistance R2,3rd resistor R3, the 4th electricity Hinder R4, the 5th resistance R5, the 6th resistance R6, the 7th resistance R7, the 8th resistance R8, the 9th resistance R9, the tenth resistance R10, first Capacitance C1, the second capacitance C2, third capacitance C3, the 4th capacitance C4, the 5th capacitance C5, the 6th capacitance C6, the 7th capacitance C7, the 8th Capacitance C8, the 9th capacitance C9, adjustable resistance RP1, triode VT1 and photodiode VD1, the model of integrated circuit U1 The base stage of TDA4050, the triode VT1 are connect with first resistor R1 and second resistance R2 respectively by 3rd resistor R3, and The end is connect with the cathode of photodiode VD1, the plus earth of photodiode VD1, the electricity of the first resistor R1 and second Hinder one end ground connection of the series circuit of R2 compositions, the external 15V DC voltage power supplies of the other end, the emitter of the triode VT1 By the parallel circuit ground connection of the second capacitance C2 and the 5th resistance R5 compositions, the collector of the triode VT1 passes through the 4th electricity The external 15V DC voltage power supplies of R4 are hindered, one end of the first capacitance C1 is grounded, the external 15V DC voltage power supplies of the other end, One end of the third capacitance C3 is grounded, the external 15V DC voltage power supplies of the other end, one end ground connection of the 9th capacitance C9, The external 15V DC voltage power supplies of the other end, the collector of the triode VT1 is connect with the 8th end of integrated circuit U1, described One end ground connection of the series circuit of 6th resistance R6, adjustable resistance RP1 and the 7th resistance R7 compositions, the external 15V direct currents of the other end The adjustable end of voltage source, the adjustable resistance RP1 is connect with the second end of integrated circuit U1, and the end passes through the 4th capacitance C4 is grounded, and the first end ground connection of the integrated circuit U1, the 4th end of the integrated circuit U1 passes through the 9th resistance R9 and the 8th The series circuit of resistance R8 composition is connect with the 5th end of integrated circuit U1, what the 7th capacitance C7 and the 8th capacitance C8 were formed Series circuit is in parallel with the series circuit of the 9th resistance R9 and the 8th resistance R8 compositions, one end ground connection of the 6th capacitance C6, The other end is connect with the 9th resistance R9 and the 8th resistance R8 respectively, one end of the tenth resistance R10 ground connection, the other end respectively with 7th capacitance C7 and the 8th capacitance C8 connections, the external 15V DC voltage power supplies in the 6th end of the integrated circuit U1 are described integrated 7th end of circuit U 1 passes through the 5th capacitance C5 ground connection.
Wherein, it can be realized by wireless communication module and remote control, in wireless communication line, light are carried out to deduster Quick diode VD1 receives remote infrared signal, then by the amplifying circuit that is formed based on triode VT1 to signal It is amplified, so as to realize the reliable reception to signal;Then it enters back into and carries out the reliable of signal in integrated circuit U1 Processing, is filtered interference signal, recently enters in PLC, controlled, to realize remote control.
As preferred embodiment, the air inlet assembly includes air intake pump 5 and regulating valve 4, and the air intake pump 5 passes through Regulating valve 4 is connected to each filter bag 6.
As preferred embodiment, the purification assembly includes exhaust pipe 7, back blowing machine 9 and switching valve 8, described anti- Hair-dryer 9 is connected to by switching valve 8 with each filter bag 6, and the exhaust pipe 7 is connected to by switching valve 8 with the inside of cylinder 1.
Wherein, switching valve 8 come switch outlet and purification both of which, when need purification when, back blowing machine 9 work, Inner barrel is entered, blowback is carried out to each filter bag 6;When needing dedusting, switching valve 8 is switched to exhaust pipe 7, clean Gas is discharged from exhaust pipe 7.
As preferred embodiment, the panel is equipped with display screen, indicator light and button.The inside of the panel is also Equipped with PLC, the antenna, display screen, indicator light and button are electrically connected with PLC.Wherein, antenna can be realized to deduster Remote control;Display screen can carry out real-time display to the job information of deduster;Indicator light, can be to the work of deduster Make state and carries out real-time display;Button carries out live manipulation convenient for staff to deduster;PLC can be realized to deduster Carry out intelligentized control method.
It is above-mentioned according to the present invention be enlightenment, through the above description, relevant staff completely can without departing from In the range of this invention technological thought, various changes and amendments are carried out.The technical scope of this invention is not limited to In the content on specification, it is necessary to determine its technical scope according to right.

Claims (5)

1. a kind of chambered pulse back-flushing bag type dust collector based on Internet of Things, it is characterised in that:Including newel frame, the pillar Frame is equipped with support column, and the support column is equipped with cylinder, and the lower section of the cylinder is equipped with ash bucket component, the cylinder it is upper Side is equipped with air inlet assembly, and the cylinder is internally provided with several filter bags, and the side of the cylinder is additionally provided with purification assembly, the cylinder Body is connected to purification assembly;
The side of the cylinder be equipped with middle control component, the middle control component includes panel, the panel be internally provided with antenna with Wireless communication module, the antenna are electrically connected with wireless communication module, and the wireless communication module includes wireless communication line, institute It includes integrated circuit, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 6th to state wireless communication line Resistance, the 7th resistance, the 8th resistance, the 9th resistance, the tenth resistance, the first capacitance, the second capacitance, third capacitance, the 4th capacitance, 5th capacitance, the 6th capacitance, the 7th capacitance, the 8th capacitance, the 9th capacitance, adjustable resistance, triode and photodiode integrate The model TDA4050 of circuit, the base stage of the triode are connect with first resistor and second resistance respectively by 3rd resistor, And the cathode of the end and photodiode connects, the plus earth of photodiode, the first resistor and second resistance composition Series circuit one end ground connection, the external 15V DC voltage power supplies of the other end, the emitter of the triode passes through the second capacitance With the parallel circuit ground connection of the 5th resistance composition, the collector of the triode passes through the external 15V direct currents piezoelectricity of the 4th resistance Source, one end ground connection of first capacitance, the external 15V DC voltage power supplies of the other end, one end ground connection of the third capacitance, separately The external 15V DC voltage power supplies in one end, one end ground connection of the 9th capacitance, the external 15V DC voltage power supplies of the other end are described The collector of triode and the 8th end of integrated circuit connect, the string that the 6th resistance, adjustable resistance and the 7th resistance form Join one end ground connection of circuit, the external 15V DC voltage power supplies of the other end, the of the adjustable end of the adjustable resistance and integrated circuit Two ends connect, and the end, by the 4th capacity earth, the first end of the integrated circuit is grounded, the 4th end of the integrated circuit 5th end of the series circuit and integrated circuit that are made up of the 9th resistance and the 8th resistance connects, the 7th capacitance and the 8th The series circuit of capacitance composition is in parallel with the series circuit that the 9th resistance and the 8th resistance form, a termination of the 6th capacitance Ground, the other end are connect with the 9th resistance and the 8th resistance respectively, one end of the tenth resistance ground connection, and the other end is respectively with the 7th Capacitance and the 8th capacitance connection, the external 15V DC voltage power supplies in the 6th end of the integrated circuit, the 7th of the integrated circuit the End passes through the 5th capacity earth.
2. the chambered pulse back-flushing bag type dust collector according to claim 1 based on Internet of Things, it is characterised in that:It is described into Gas assembly includes air intake pump and regulating valve, and the air intake pump is connected to by regulating valve with each filter bag.
3. the chambered pulse back-flushing bag type dust collector according to claim 1 based on Internet of Things, it is characterised in that:It is described net It includes exhaust pipe, back blowing machine and switching valve to change assembly, and the back blowing machine is connected to by switching valve with each filter bag, the exhaust Pipe is connected to by switching valve with the inside of cylinder.
4. the chambered pulse back-flushing bag type dust collector according to claim 1 based on Internet of Things, it is characterised in that:The face Plate is equipped with display screen, indicator light and button.
5. the chambered pulse back-flushing bag type dust collector according to claim 4 based on Internet of Things, it is characterised in that:The face The inside of plate is additionally provided with PLC, and the antenna, display screen, indicator light and button are electrically connected with PLC.
CN201711410277.1A 2017-12-23 2017-12-23 Chambered pulse back-flushing bag type dust collector based on Internet of Things Pending CN108310861A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711410277.1A CN108310861A (en) 2017-12-23 2017-12-23 Chambered pulse back-flushing bag type dust collector based on Internet of Things

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711410277.1A CN108310861A (en) 2017-12-23 2017-12-23 Chambered pulse back-flushing bag type dust collector based on Internet of Things

Publications (1)

Publication Number Publication Date
CN108310861A true CN108310861A (en) 2018-07-24

Family

ID=62891855

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711410277.1A Pending CN108310861A (en) 2017-12-23 2017-12-23 Chambered pulse back-flushing bag type dust collector based on Internet of Things

Country Status (1)

Country Link
CN (1) CN108310861A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110917756A (en) * 2020-01-02 2020-03-27 上海袋式除尘配件有限公司 Intelligent pulse blowing control instrument for bag type dust collector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200947173Y (en) * 2006-08-08 2007-09-12 屈战威 Locking accutron capable of displaying internet time
CN201969438U (en) * 2011-01-18 2011-09-14 江苏康洁环境工程有限公司 Chambered pulse back-flushing bag type dust collector
CN207980690U (en) * 2017-12-23 2018-10-19 江苏康洁环境工程有限公司 Chambered pulse back-flushing bag type dust collector based on Internet of Things

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN200947173Y (en) * 2006-08-08 2007-09-12 屈战威 Locking accutron capable of displaying internet time
CN201969438U (en) * 2011-01-18 2011-09-14 江苏康洁环境工程有限公司 Chambered pulse back-flushing bag type dust collector
CN207980690U (en) * 2017-12-23 2018-10-19 江苏康洁环境工程有限公司 Chambered pulse back-flushing bag type dust collector based on Internet of Things

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110917756A (en) * 2020-01-02 2020-03-27 上海袋式除尘配件有限公司 Intelligent pulse blowing control instrument for bag type dust collector

Similar Documents

Publication Publication Date Title
CN104785372B (en) Electric dust collector is filtered in dust collecting electrode blowback
CN207980690U (en) Chambered pulse back-flushing bag type dust collector based on Internet of Things
CN108310861A (en) Chambered pulse back-flushing bag type dust collector based on Internet of Things
CN204593603U (en) Air detection and filter
CN208711269U (en) A kind of pulse dust cleaning sack cleaner
CN207176593U (en) A kind of sweeper
CN204619574U (en) Air box impulse bag-type dust remover filter bag inwall inhales grey assembly
CN205042279U (en) Pulse bag dust collector with collect dust function
CN104759181B (en) Smelting converter flue dust dust arrester installation
CN207575980U (en) A kind of cleaner applied to urban afforestation
CN103631453B (en) The signal receiving device of infrared touch frame
CN208758117U (en) A kind of novel external wall electronic curtain cleaning equipment
CN208668511U (en) A kind of feeding water filtering device of rain collector
CN204412006U (en) Smelting converter flue dust dust arrester installation
CN208909179U (en) It is a kind of can be dust-proof frustrate rotten equipment for jeans
CN212190176U (en) Dust extraction for bar planting
CN209405881U (en) A kind of bag filter
CN220834586U (en) Reduce updraft of sack cleaner and advance cigarette structure
CN207838512U (en) A kind of novel bag-type duster
CN215876752U (en) Multistage adsorption type gas separation equipment
CN209548984U (en) A kind of rubber production processing equipment of environmental protection and energy saving
CN209791102U (en) Sack cleaner convenient to dismouting
CN107421870A (en) A kind of filter bag test machine
CN208969456U (en) A kind of intelligent bed being convenient to clean a bottom
CN209969162U (en) Dust-removing air suction hood

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination