CN110004445A - A kind of acidity etching liquid recycling system L-type chlorine spray absorber - Google Patents
A kind of acidity etching liquid recycling system L-type chlorine spray absorber Download PDFInfo
- Publication number
- CN110004445A CN110004445A CN201910434545.6A CN201910434545A CN110004445A CN 110004445 A CN110004445 A CN 110004445A CN 201910434545 A CN201910434545 A CN 201910434545A CN 110004445 A CN110004445 A CN 110004445A
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- Prior art keywords
- clamping
- gas mixing
- recycling system
- etching liquid
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/46—Regeneration of etching compositions
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Health & Medical Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
Abstract
The invention discloses a kind of acidity etching liquid recycling system L-type chlorine spray absorbers, including nozzle, L-type feed pipe, breather cheek valve, gas mixing pipe, diffuser and auxiliary gas mixing device, the nozzle is fixedly mounted on L-type feed pipe one end by flange, the breather cheek valve, which runs through, to be fixed on the outside of L-type feed pipe, the gas mixing pipe is fixedly mounted on the one end of L-type feed pipe far from nozzle, and gas mixing pipe is fixedly connected with diffuser far from one end of L-type feed pipe, this acidity etching liquid recycling system L-type chlorine spray absorber, pass through the L-type chlorine spray-absorption device of setting, efficiently chlorine can be absorbed, and recycling is mixed simultaneously, greatly improve the efficiency that chlorine recycles in etching solution recycling system, and the ability of its secondary use is improved simultaneously, pass through direct secondary use, Avoid the waste of chlorine resource.
Description
Technical field
The present invention relates to acidity etching liquid recycling technical field, specially a kind of acidity etching liquid recycling system
L-type chlorine spray absorber.
Background technique
Acid etching regeneration uses " electrolysis with ion-exchange film copper " technique, the technique be with ionic membrane by the anode region of electrolytic cell and
Cathodic region is separated into two independent regions, and anode region is spent etching solution renewing zone, it is by one in the spent etching solution after dropping copper
Valence copper ion generates bivalent cupric ion by electrochemical reaction, regenerates spent etching solution, and cathodic region is copper recovery area, passes through
Ion diaphragm selectively makes the ion directional migration in solution, and the copper ion in solution is allowed to obtain electron reduction into metal
Copper.
However, the process electrolyte slot anode can generate a large amount of chlorine, it both polluted air, be degrading working environment, and show
Some chlorine recovery system limited efficacies, and in treatment process effective secondary use cannot be carried out to chlorine, for this purpose, we mention
A kind of acidity etching liquid recycling system L-type chlorine spray absorber out.
Summary of the invention
The purpose of the present invention is to provide a kind of acidity etching liquid recycling system L-type chlorine spray absorbers, with solution
Certainly the problems mentioned above in the background art.
To achieve the above object, the invention provides the following technical scheme: a kind of acidity etching liquid recycling system L-type chlorine
Gas spray absorber, including nozzle, L-type feed pipe, breather cheek valve, gas mixing pipe, diffuser and auxiliary gas mixing device, the spray
Mouth is fixedly mounted on L-type feed pipe one end by flange, and the breather cheek valve, which runs through, to be fixed on the outside of L-type feed pipe, described
Gas mixing pipe is fixedly mounted on the one end of L-type feed pipe far from nozzle, and gas mixing pipe is fixedly connected with far from one end of L-type feed pipe
Diffuser, the auxiliary gas mixing device are fixedly mounted on the one end of diffuser far from gas mixing pipe.
Preferably, the breather cheek valve is equidistantly equipped with multiple, and multiple breather cheek valves run through be fixed on L-type charging
On the outside of pipe.
Preferably, the auxiliary gas mixing device includes installation outline border, water-proof fan and is clamped limiting device, outside the installation
Frame is fixedly mounted on the one end of diffuser far from gas mixing pipe, offers installation groove, the water-proof fan in the installation outline border
It is slidably connected in installation groove, and water-proof fan is flexibly connected by clamping limiting device with installation outline border.
Preferably, the installation groove bottom symmetrical is fixedly mounted there are two the first compressed spring, the water-proof fan with
First compressed spring is in close contact.
Preferably, the clamping limiting device includes clamping spring, clamping slide plate, clamping bayonet lock and is clamped connecting rod, described
Clamping sliding slot is offered in installation outline border, clamping slide plate is slidably connected in the clamping sliding slot, and is clamped sliding slot close to installation
The side sidewall symmetry of groove is opened up there are two perforative clamping company slot, and the clamping bayonet lock is symmetrically arranged with two, the clamping
Bayonet lock is fixedly mounted on clamping slide plate close to the side of installation groove, and is clamped bayonet lock and slides through clamping even slot, described
Limit even slot is offered at the top of clamping sliding slot, the clamping rod slide is clamped connecting rod and is fixedly mounted on through limit even slot
It is clamped at the top of slide plate.
Preferably, there are two the clamping limiting device is set, and two clamping limiting devices are symmetricly set on installation groove
Two sides.
Preferably, the clamping connecting rod is fixedly installed with anti-skidding shifting block far from one end of clamping sliding block.
Preferably, limit top plate is equipped in the installation groove, the limit top plate passes through installation groove and installation outline border
It is slidably connected, and limit top plate two sides are symmetrically opened up there are four card slot is engaged, the limit top plate passes through engaging card slot and clamping
Bayonet lock engaging, and limit top plate bottom symmetrical is fixedly mounted there are two the second compressed spring, second compressed spring is separate to be limited
One end of position top plate and water-proof fan are in close contact.
Compared with prior art, the beneficial effects of the present invention are:
1, of the invention, by the L-type chlorine spray-absorption device of setting, efficiently chlorine can be absorbed, and mixes simultaneously
It closes and recycles, greatly improve the efficiency that chlorine recycles in etching solution recycling system, and improve its secondary benefit simultaneously
Ability avoids the waste of chlorine resource by direct secondary use.
2, of the invention, by the way that multiple breather cheek valves are arranged, then the uptake of chlorine in the unit time is improved, to mention
High-selenium corn efficiency then enables water-proof fan to pop up when taking by elastic force by the first compressed spring of setting, improves
Convenience then improves the convenience of water-proof fan installing and dismounting by the clamping limiting device of setting, when water-proof fan failure
When replacement can be quickly repaired to it, by be arranged two clamping limiting devices, then further improve water-proof fan peace
Fixed stability is filled, by the anti-skidding shifting block of setting, then improves the convenience that clamping limiting device uses.
Detailed description of the invention
Fig. 1 is overall structure of the present invention；
Fig. 2 is that structural schematic diagram cuts open in Fig. 1 office of the present invention；
Fig. 3 is present invention auxiliary gas mixing device structural schematic diagram；
Fig. 4 is that structural schematic diagram cuts open in Fig. 3 office of the present invention；
Fig. 5 is that structural schematic diagram cuts open in another orientation office of Fig. 3 of the present invention；
Fig. 6 is the area A of the present invention enlarged structure schematic diagram；
Fig. 7 is the area B of the present invention enlarged structure schematic diagram.
In figure: 1- nozzle；2-L type feed pipe；3- breather cheek valve；4- gas mixing pipe；5- diffuser；6- assists mixed gas dress
It sets；7- installs outline border；8- water-proof fan；9- is clamped limiting device；10- installation groove；The first compressed spring of 11-；12- is clamped bullet
Spring；13- is clamped slide plate；14- is clamped bayonet lock；15- is clamped connecting rod；16- is clamped sliding slot；17- clamping connects slot；18- limit connects slot；
The anti-skidding shifting block of 19-；The second compressed spring of 20-；21- limit top plate；22- engages card slot.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-7 is please referred to, the present invention provides a kind of technical solution: a kind of acidity etching liquid recycling system L-type chlorine
Spray absorber, including nozzle 1, L-type feed pipe 2, breather cheek valve 3, gas mixing pipe 4, diffuser 5 and auxiliary gas mixing device 6, institute
It states nozzle 1 and 2 one end of L-type feed pipe is fixedly mounted on by flange, the breather cheek valve 3, which runs through, to be fixed on outside L-type feed pipe 2
Side, the gas mixing pipe 4 are fixedly mounted on the one end of L-type feed pipe 2 far from nozzle 1, and gas mixing pipe 4 far from L-type feed pipe 2 one
End is fixedly connected with diffuser 5, and the auxiliary gas mixing device 6 is fixedly mounted on the one end of diffuser 5 far from gas mixing pipe 4, uses
When, semi-finished product etching solution follows bad pump by the external world, and sprays into L-type feed pipe 2 by nozzle 1, and semi-finished product etching solution is fed in L-type
Negative pressure is generated in pipe 2, sucks chlorine by negative pressure and through breather cheek valve 3, the chlorine of sucking loses in gas mixing pipe 4 with semi-finished product
Liquid mixing is carved, mixed liquor is spread through diffuser 5 after mixing, and by assisting gas mixing device 6 further to be mixed, improves chlorine
Absorption efficiency is most made etching solution through the auxiliary spray of gas mixing device 6 afterwards, completes the recycling of chlorine and be completed at the same time etching solution
Regeneration.
The breather cheek valve 3 is equidistantly equipped with multiple, and multiple breather cheek valves 3 are through being fixed on outside L-type feed pipe 2
Side then improves the uptake of chlorine in the unit time by multiple breather cheek valves 3, to improve absorption efficiency.
The auxiliary gas mixing device 6 includes installation outline border 7, water-proof fan 8 and clamping limiting device 9, the installation outline border 7
It is fixedly mounted on the one end of diffuser 5 far from gas mixing pipe 4, installation groove 10, the waterproof wind are offered in the installation outline border 7
Machine 8 is slidably connected in installation groove 10, and water-proof fan 8 is flexibly connected by clamping limiting device 9 with installation outline border 7, energy
It is enough that efficiently chlorine is absorbed, and recycling is mixed simultaneously, greatly improve chlorine in etching solution recycling system
The efficiency of recycling, and the ability of its secondary use is improved simultaneously, by direct secondary use, avoid the wave of chlorine resource
Take.
10 bottom symmetrical of installation groove is fixedly mounted there are two the first compressed spring 11, the water-proof fan 8 and the
One compressed spring 11 is in close contact, and by the first compressed spring 11, then water-proof fan 8 is enabled to pass through elastic force when taking
Pop-up improves convenience.
The clamping limiting device 9 includes clamping spring 12, clamping slide plate 13, clamping bayonet lock 14 and clamping connecting rod 15, institute
It states and offers clamping sliding slot 16 in installation outline border 7, clamping slide plate 13 is slidably connected in the clamping sliding slot 16, and be clamped sliding slot
16 open up close to the side sidewall symmetry of installation groove 10 there are two perforative clamping company slot 17, and the clamping bayonet lock 14 symmetrically sets
There are two, the clamping bayonet lock 14 is fixedly mounted on clamping slide plate 13 close to the side of installation groove 10, and is clamped bayonet lock 14
Sliding offers limit even slot 18 at the top of clamping even slot 17, the clamping sliding slot 16, and the sliding of clamping connecting rod 15 is passed through
Limit even slot 18 is worn, and is clamped connecting rod 15 and is fixedly mounted at the top of clamping slide plate 13, by being clamped limiting device 9, is then improved
The convenience of 8 installing and dismounting of water-proof fan can quickly repair replacement when 8 failure of water-proof fan to it.
There are two the clamping limiting device 9 is set, and two clamping limiting devices 9 are symmetricly set on 10 liang of installation groove
Side then further improves water-proof fan 8 and installs fixed stability by the way that two clamping limiting devices 9 are arranged.
The clamping connecting rod 15 is fixedly installed with anti-skidding shifting block 19 far from one end of clamping sliding block, passes through anti-skidding shifting block
19, then improve the convenience that clamping limiting device 9 uses.
Limit top plate 21 is equipped in the installation groove 10, the limit top plate 21 passes through installation groove 10 and installation outline border
7 are slidably connected, and 21 two sides of limit top plate are symmetrically opened up there are four card slot 22 is engaged, and the limit top plate 21 passes through engaging card slot
22 engage with clamping bayonet lock 14, and the second compressed spring 20 there are two the fixed installations of 21 bottom symmetrical of limit top plate, and described second
The one end of compressed spring 20 far from limit top plate 21 and water-proof fan 8 are in close contact, then can be avoided the surface mill of water-proof fan 8
Damage, and cushion performance is improved, when 8 operation vibration of water-proof fan, its service life can be effectively improved.
When disassembly, the anti-skidding shifting block 19 for stirring two sides respectively first drives clamping connecting rod 15 to be displaced, and clamping connecting rod 15 is displaced
Clamping slide plate 13 is then driven to be displaced, clamping slide plate 13 is displaced the card for then driving the clamping displacement of bayonet lock 14 to cancel itself and limit top plate 21
It closes, limit top plate 21 is cancelled the extruding to water-proof fan 8 and limited at this time, elastic force of the water-proof fan 8 by the first compressed spring 11
Effect shifts up pop-up, when then dismantling and take out by water-proof fan 8, and installing, is directed at water-proof fan 8 installs first
Groove 10 is inserted into, and clamping bayonet lock 14 can slightly hinder the insertion of water-proof fan 8 in insertion process, stirs anti-skidding shifting block respectively at this time
19, and resisted under water-proof fan 8 after 8 borrowing of water-proof fan, then by the second compressed spring 20 of 21 bottom of limit top plate
Pressure, during limit top plate 21 pushes, limit top plate 21 squeezes clamping bayonet lock 14 first and is displaced, when limit top plate 21 is depressed into
When fixed position, clamping bayonet lock 14 is acted on by the elastic force of clamping spring 12 to be resetted, and then is engaged with card slot 22 is engaged, to limit
Top plate 21 is limited, thus by limit top plate 21, the first compressed spring 11 and the second compressed spring 20 that water-proof fan 8 is steady
Fixed is mounted in installation outline border 7.
The present invention, the preferred 6424TU-IIC model of water-proof fan 8, circuit operate to existing custom circuit, relate in the present invention
And circuit and control be the prior art, herein without excessively repeating.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of acidity etching liquid recycling system L-type chlorine spray absorber, including nozzle (1), L-type feed pipe (2), list
To intake valve (3), gas mixing pipe (4), diffuser (5) and auxiliary gas mixing device (6), it is characterised in that: the nozzle (1) passes through method
Orchid is fixedly mounted on L-type feed pipe (2) one end, and the breather cheek valve (3), which is run through, to be fixed on the outside of L-type feed pipe (2), described
Gas mixing pipe (4) is fixedly mounted on the one end of L-type feed pipe (2) far from nozzle (1), and gas mixing pipe (4) is far from L-type feed pipe (2)
One end be fixedly connected with diffuser (5), the auxiliary gas mixing device (6) is fixedly mounted on diffuser (5) far from gas mixing pipe (4)
One end.
2. a kind of acidity etching liquid recycling system L-type chlorine spray absorber according to claim 1, feature exist
Equidistantly it is equipped in: the breather cheek valve (3) multiple, and multiple breather cheek valves (3) are through being fixed on L-type feed pipe (2)
Outside.
3. a kind of acidity etching liquid recycling system L-type chlorine spray absorber according to claim 1, feature exist
In: the auxiliary gas mixing device (6) includes installation outline border (7), water-proof fan (8) and is clamped limiting device (9), outside the installation
Frame (7) is fixedly mounted on the one end of diffuser (5) far from gas mixing pipe (4), offers installation groove in the installation outline border (7)
(10), the water-proof fan (8) is slidably connected in installation groove (10), and water-proof fan (8) passes through clamping limiting device (9)
It is flexibly connected with installation outline border (7).
4. a kind of acidity etching liquid recycling system L-type chlorine spray absorber according to claim 3, feature exist
It is fixedly mounted in: installation groove (10) bottom symmetrical there are two the first compressed spring (11), the water-proof fan (8) and the
One compressed spring (11) is in close contact.
5. a kind of acidity etching liquid recycling system L-type chlorine spray absorber according to claim 3, feature exist
In: the clamping limiting device (9) includes clamping spring (12), clamping slide plate (13), clamping bayonet lock (14) and clamping connecting rod
(15), clamping sliding slot (16) is offered in the installation outline border (7), slidably connects clamping slide plate in the clamping sliding slot (16)
(13), and be clamped sliding slot (16) close to installation groove (10) side sidewall symmetry open up there are two perforative clamping company slot
(17), the clamping bayonet lock (14) is symmetrically arranged with two, and the clamping bayonet lock (14) is fixedly mounted on clamping slide plate (13) and leans on
The side of nearly installation groove (10), and bayonet lock (14) sliding is clamped through the company of clamping slot (17), clamping sliding slot (16) top
Portion offers limit even slot (18), and clamping connecting rod (15) sliding is through the company of limit slot (18), and it is fixed to be clamped connecting rod (15)
It is mounted at the top of clamping slide plate (13).
6. a kind of acidity etching liquid recycling system L-type chlorine spray absorber according to claim 3, feature exist
In: there are two the clamping limiting device (9) sets, and two clamping limiting devices (9) are symmetricly set on installation groove (10) two
Side.
7. a kind of acidity etching liquid recycling system L-type chlorine spray absorber according to claim 5, feature exist
In: clamping connecting rod (15) is fixedly installed with anti-skidding shifting block (19) far from one end of clamping sliding block.
8. a kind of acidity etching liquid recycling system L-type chlorine spray absorber according to claim 6, feature exist
In: limit top plate (21) are equipped in the installation groove (10), the limit top plate (21) passes through installation groove (10) and installation
Outline border (7) is slidably connected, and limit top plate (21) two sides symmetrically open up there are four engage card slot (22), the limit top plate (21)
Engaged by engaging card slot (22) with clamping bayonet lock (14), and there are two the second pressures for the fixed installation of limit top plate (21) bottom symmetrical
Contracting spring (20), second compressed spring (20) one end and water-proof fan (8) far from limit top plate (21) are in close contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434545.6A CN110004445A (en) | 2019-05-23 | 2019-05-23 | A kind of acidity etching liquid recycling system L-type chlorine spray absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910434545.6A CN110004445A (en) | 2019-05-23 | 2019-05-23 | A kind of acidity etching liquid recycling system L-type chlorine spray absorber |
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| Publication Number | Publication Date |
|---|---|
| CN110004445A true CN110004445A (en) | 2019-07-12 |
Family
ID=67177730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910434545.6A Pending CN110004445A (en) | 2019-05-23 | 2019-05-23 | A kind of acidity etching liquid recycling system L-type chlorine spray absorber |
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| CN (1) | CN110004445A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743328A (en) * | 2019-09-17 | 2020-02-04 | 黄细香 | Acid etching solution circulation regeneration anti-recoil bipolar jet flow chlorine absorber |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2057116U (en) * | 1989-10-13 | 1990-05-16 | 罗德勤 | Unitary corrosion-resistant jet pump |
| CN108950460A (en) * | 2018-07-05 | 2018-12-07 | 秦小梅 | A kind of ultrasound electric arc metal spraying device |
| CN109136079A (en) * | 2018-09-25 | 2019-01-04 | 山东省农业科学院农业质量标准与检测技术研究所 | The bacterium stoste processing unit and application method tested and analyzed for bacterial drug resistance |
| CN210104082U (en) * | 2019-05-23 | 2020-02-21 | 深圳众意远诚环保科技有限公司 | L-shaped chlorine spraying absorber of acid etching solution circulating regeneration system |
-
2019
- 2019-05-23 CN CN201910434545.6A patent/CN110004445A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2057116U (en) * | 1989-10-13 | 1990-05-16 | 罗德勤 | Unitary corrosion-resistant jet pump |
| CN108950460A (en) * | 2018-07-05 | 2018-12-07 | 秦小梅 | A kind of ultrasound electric arc metal spraying device |
| CN109136079A (en) * | 2018-09-25 | 2019-01-04 | 山东省农业科学院农业质量标准与检测技术研究所 | The bacterium stoste processing unit and application method tested and analyzed for bacterial drug resistance |
| CN210104082U (en) * | 2019-05-23 | 2020-02-21 | 深圳众意远诚环保科技有限公司 | L-shaped chlorine spraying absorber of acid etching solution circulating regeneration system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110743328A (en) * | 2019-09-17 | 2020-02-04 | 黄细香 | Acid etching solution circulation regeneration anti-recoil bipolar jet flow chlorine absorber |
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