CN211813912U - Electronic connector surface coating post-cleaning waste liquid treatment device - Google Patents
Electronic connector surface coating post-cleaning waste liquid treatment device Download PDFInfo
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- CN211813912U CN211813912U CN202020049539.7U CN202020049539U CN211813912U CN 211813912 U CN211813912 U CN 211813912U CN 202020049539 U CN202020049539 U CN 202020049539U CN 211813912 U CN211813912 U CN 211813912U
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Abstract
The utility model relates to a wash waste liquid processing apparatus behind electronic connector surface coating, include: the device comprises a tank body, a filter screen, a stirring assembly, a valve, an ultraviolet lamp, a light-transmitting partition plate, a water outlet pipe and a water pump; the top of the tank body is provided with a waste liquid water gap, a first partition plate and a second partition plate are arranged inside the tank body, a filtering cavity, a reaction cavity and a disinfection cavity are formed in the tank body, a filter screen is arranged in the filtering cavity, the tank body is provided with a stirring assembly, the stirring portion of the stirring assembly extending into the reaction cavity is horizontally arranged, the tank body is provided with a reactant adding port, and the reactant adding port is positioned at the top of the reaction cavity; the intercommunication department of reaction cavity and disinfection cavity is provided with the valve, and ultraviolet lamp is equipped with many and installs in the lower surface of second baffle, and the printing opacity baffle is located the disinfection cavity and is located ultraviolet lamp's below, and the bottom intercommunication of disinfection cavity has the outlet pipe, is provided with the suction pump on the outlet pipe. The utility model discloses compact structure has, occupy the less effect of site area.
Description
Technical Field
The utility model relates to an environment-friendly production washing waste liquid treatment facility especially relates to an electronic connector surface coating postcleaning waste liquid treatment device.
Background
Electrical connectors, also commonly referred to as circuit connectors, electrical connectors, bridge two conductors in a circuit so that current or signals can flow from one conductor to the conductor detail of the other conductor. The electronic connector is generally formed by stamping an active aluminum alloy, and needs to be electroplated after stamping, wherein electroplating is a process of plating a thin layer of other metals or alloys on the electronic connector by utilizing an electrolysis principle, so that the effects of preventing metal oxidation (such as corrosion), improving wear resistance, conductivity, light reflectivity and corrosion resistance (such as copper sulfate) and enhancing the appearance are achieved. In the electroplating process, after oil removal, acid pickling, electroplating and other operations, the electroplating wastewater is obtained from the cleaning of the plated piece, the filtering of the plating solution, the waste plating solution, leakage, ground washing and the like in the electroplating production process, wherein the cleaning water of the plated piece accounts for more than 80 percent.
Now, a chinese patent with publication number CN108862776A is retrieved, and discloses an environment-friendly electroplating waste liquid purification treatment device, which comprises a first purification tank and a stirring rod, wherein the upper end of the first purification tank is fixedly connected with a liquid inlet, a filter plate is arranged inside the first purification tank, clamping grooves at the left and right ends of the filter plate are connected with sliding plates, the clamping groove at the upper end of the sliding plate is connected with a clamping block, the right lower end of the first purification tank is connected with a second purification tank, the upper end of the second purification tank is fixedly connected with a shell, a motor is arranged inside the shell, the lower end of the motor is connected with a gear, the upper end of the stirring rod penetrates through the second purification tank and is connected with the gear, the right end of the second purification tank is connected with a third purification tank through a water pump, and a partition plate is arranged inside the third purification tank.
The above prior art solutions have the following drawbacks: because first purifying pond, second purifying pond, third purifying pond are separately set up alone, and the three is transversely arranged moreover under general condition, can occupy great site area, so wait to improve.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an electronic connector surface coating back washing waste liquid treatment device, have compact structure, occupy the less advantage of area.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
an electronic connector surface post-plating cleaning waste liquid treatment device, comprising: the device comprises a tank body, a filter screen, a stirring assembly, a valve, an ultraviolet lamp, a light-transmitting partition plate, a water outlet pipe and a water pump;
the top of the tank body is provided with a waste liquid water gap, a first partition plate and a second partition plate are arranged inside the tank body, a filtering cavity, a reaction cavity and a disinfection cavity which are sequentially arranged from top to bottom and communicated are formed, a filter screen for primarily filtering waste liquid is arranged in the filtering cavity, one or more groups of stirring assemblies are arranged on the tank body, the stirring assemblies extend into the stirring part in the reaction cavity and are horizontally arranged, a reactant adding port is arranged on the tank body, and the reactant adding port is positioned at the top of the reaction cavity;
the reaction cavity with the intercommunication department of disinfection cavity is provided with the valve, ultraviolet lamp be equipped with many and install in the lower surface of second baffle, printing opacity baffle level is located just be located in the disinfection cavity ultraviolet lamp's below, the bottom intercommunication of disinfection cavity has the outlet pipe, be provided with on the outlet pipe the suction pump.
By adopting the technical scheme, after the waste liquid enters the filtering cavity from the waste liquid water gap, the solid impurities in the waste liquid can be filtered by the filter screen, the reactant adding port can facilitate workers to add a reactant into the reaction cavity, after the waste liquid enters the reaction cavity from the filtering cavity, the waste liquid can be fully contacted with the reactant through the stirring effect of the stirring assembly, metal elements in the waste liquid are reacted and precipitated, after the waste liquid fully reacts in the reaction cavity, the valve can be opened, so that the waste liquid can flow into the disinfection cavity, ultraviolet rays are emitted by the ultraviolet lamp, the waste liquid is disinfected, the light-transmitting partition plate can ensure that light rays pass through, the waste liquid can be effectively prevented from contacting the ultraviolet lamp, and a certain protection effect is achieved on the ultraviolet lamp; whole cell body formula spatial structure as an organic whole, and lead to and increase first baffle, second baffle in order to separate for filtering cavity, reaction cavity and disinfection cavity, can not only realize carrying out above-mentioned processing procedure to the waste liquid, compact structure moreover, occupy the place area less.
The present invention may be further configured in a preferred example, wherein the stirring assembly comprises: the device comprises a mounting frame, a stirring motor, a stirring shaft and stirring blades;
the stirring shaft is horizontally arranged and rotatably assembled in the tank body, one end of the stirring shaft extending out of the reaction cavity is connected with an output shaft of the stirring motor, the mounting frame is arranged outside the tank body, the stirring motor is arranged on the mounting frame, and the stirring blades are provided with a plurality of stirring blades which are uniformly fixed on the stirring shaft.
Through adopting above-mentioned technical scheme, the mounting bracket provides stable mounted position for agitator motor, and agitator motor during operation can drive the (mixing) shaft and rotate, then drives stirring paddle leaf and rotate to make reactant and waste liquid contact more abundant, better to the treatment effect of waste liquid, above-mentioned structural design's stirring subassembly stable in structure, control simply.
The utility model discloses can further configure to in a preferred example, the stirring subassembly is provided with two sets ofly, and two the mounting bracket is located respectively the opposition side of cell body.
Through adopting above-mentioned technical scheme, avoid two sets of mounting brackets, agitator motor to lie in arranging with one side to avoid whole washing waste liquid treatment device's both sides weight inhomogeneous, structural design is more reasonable.
The present invention may be further configured in a preferred embodiment such that the upper surface of the filter net is inclined downward from the middle to both sides.
Through adopting above-mentioned technical scheme, the solid impurity in the waste liquid can slide to both sides along the upper surface of filter screen, and then the middle part of above-mentioned solid impurity difficult jam filter screen can effectively reduce the change number of times or the clearance number of times of filter screen.
The present invention may be further configured in a preferred embodiment such that a plurality of support members are installed on the inner wall of the tank body, and the periphery of the filter net is placed on the support members.
Through adopting above-mentioned technical scheme, support piece has good fender supporting role that separates to the periphery of filter screen, and is very convenient when installing the filter screen, suitably mentions, rotates the filter screen when dismantling the filter screen, just can take out the filter screen from the waste liquid mouth of a river smoothly.
The present invention may be further configured in a preferred example, wherein the support member includes: the pool comprises an embedded rod and a magnet, wherein one part of the embedded rod is embedded and fixed in the pool body wall, the magnet is embedded in the upper surface of the other part of the embedded rod, the filter screen is made of stainless steel, and the magnet and the filter screen are fixed in a magnetic attraction mode.
Through adopting above-mentioned technical scheme, pre-buried pole provides the mounted position for magnet, through increasing magnet, can further through the fixed filter screen of magnetic attraction, more firm, difficult rocking after the filter screen installation, upwards mention the filter screen when dismantling the filter screen to overcome this magnetic attraction acting can.
The present invention may be further configured in a preferable example such that the upper surface of the first partition plate is arranged toward a side slope, and the lower side of the upper surface of the first partition plate is provided with a first through hole.
Through adopting above-mentioned technical scheme, the waste liquid of filtering the cavity bottom can flow towards one side along the upper surface of first baffle to the waste liquid in the filtering the cavity almost can all flow to reaction cavity along first through-hole, avoids the waste liquid to save in filtering the cavity bottom.
The utility model discloses can further configure to in a preferred example, filter the cavity with be linked together through first bending water pipe between the reaction cavity, the vertical part of first bending water pipe inserts in the first through-hole, the horizontal part of first bending water pipe is fixed in the lower surface of first baffle, the lower surface of the horizontal part of first bending water pipe is provided with a plurality of first delivery ports.
Through adopting above-mentioned technical scheme, the waste liquid of filtering cavity bottom can follow a plurality of first delivery ports that buckle on the water pipe and flow to it is more even when the waste liquid gets into the reaction cavity, is favorable to waste liquid and reactant intensive mixing reaction, and is better to the reaction treatment effect of waste liquid.
The present invention may be further configured in a preferred example such that the upper surface of the second partition plate is arranged to incline toward one side, and the lower side of the upper surface of the second partition plate is provided with a second through hole.
Through adopting above-mentioned technical scheme, the waste liquid of reaction cavity bottom can flow towards one side along the upper surface of second baffle to the waste liquid in the reaction cavity almost can all flow to the disinfection cavity along the second through-hole, avoids the waste liquid to save in reaction cavity bottom.
The utility model discloses can further configure to in a preferred example, the reaction cavity with the water pipe of buckling through the second between the disinfection cavity is linked together, the vertical part of the water pipe of buckling of second inserts just install in the second through-hole the valve, the horizontal part that the water pipe was buckled to the second is located the below of printing opacity baffle, the lower surface of the horizontal part that the water pipe was buckled to the second is provided with a plurality of second delivery ports.
Through adopting above-mentioned technical scheme, the waste liquid of reaction cavity bottom can follow the second and buckle a plurality of second delivery ports on the water pipe and flow to it is more even when the waste liquid gets into the disinfection cavity, is favorable to the waste liquid to be fully shone by ultraviolet lamp, and is better to the disinfection treatment effect of waste liquid.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the whole tank body is of an integrated three-dimensional structure, and a first partition plate and a second partition plate are added to divide the tank body into a filtering cavity, a reaction cavity and a disinfection cavity, so that the treatment process of waste liquid can be realized, the structure is compact, and the occupied area is small;
2. the waste liquid at the bottom of the filtering cavity can flow out from the plurality of first water outlets on the first bent water pipe, so that the waste liquid is more uniform when entering the reaction cavity, the waste liquid and the reactant are fully mixed and reacted, and the reaction treatment effect on the waste liquid is better;
3. the waste liquid of reaction cavity bottom can follow the second and buckle a plurality of second delivery ports on the water pipe and flow to it is more even when the waste liquid gets into the disinfection cavity, is favorable to the waste liquid to be fully shone by ultraviolet lamp, and is better to the disinfection treatment effect of waste liquid.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is an enlarged view at a in fig. 1.
Reference numerals: 1. a tank body; 11. a waste liquid water gap; 12. a first separator; 13. a second separator; 14. cleaning the door; 15. a reactant addition port; 2. a filter screen; 3. a stirring assembly; 31. a mounting frame; 32. a stirring motor; 33. a stirring shaft; 34. a stirring paddle; 4. a valve; 5. an ultraviolet lamp; 6. a light-transmitting partition; 7. a support member; 71. pre-burying a rod; 72. a magnet; 8. a first bent water pipe; 81. a first water outlet; 9. a second bent water pipe; 91. a second water outlet; 10. a water outlet pipe; 101. a water pump.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, do the utility model discloses an electronic connector surface coating postcleaning waste liquid treatment device, include: the device comprises a tank body 1, a filter screen 2, a stirring component 3, a valve 4, an ultraviolet lamp 5, a light-transmitting partition plate 6, a water outlet pipe 10 and a water pump 101.
The intercommunication department of reaction cavity and disinfection cavity is provided with valve 4, and ultraviolet lamp 5 is equipped with many and installs in the lower surface of second baffle 13, and 6 levels of printing opacity baffle are located the disinfection cavity and are located ultraviolet lamp 5's below, and the bottom intercommunication of disinfection cavity has outlet pipe 10, is provided with suction pump 101 on the outlet pipe 10, and the interior diapire of cell body 1 is the inclined plane, and outlet pipe 10 is located the lower one side in above-mentioned inclined plane.
The stirring assembly 3 includes: the mounting frame 31, the stirring motor 32, the stirring shaft 33 and the stirring blades 34; the stirring shaft 33 is horizontally arranged and rotatably assembled in the tank body 1, one end of the stirring shaft 33 extending out of the reaction cavity is connected with an output shaft of the stirring motor 32, the mounting frame 31 is arranged outside the tank body 1, the stirring motor 32 is mounted on the mounting frame 31, and the stirring blades 34 are provided with a plurality of stirring blades and are uniformly fixed on the stirring shaft 33. Mounting bracket 31 provides stable mounted position for agitator motor 32, and agitator motor 32 during operation can drive (mixing) shaft 33 and rotate, then drives stirring paddle leaf 34 and rotates to make reactant and waste liquid contact more abundant, better to the treatment effect of waste liquid, above-mentioned structural design's stirring subassembly 3 stable in structure, control simply.
Stirring subassembly 3 is provided with two sets ofly in this embodiment, and two mounting brackets 31 are located the opposition side of cell body 1 respectively, avoids two sets of mounting brackets 31, agitator motor 32 to be located same side and arranges to avoid whole washing waste liquid treatment device's both sides weight inhomogeneous, structural design is more reasonable.
The upper surface of filter screen 2 is by middle to both sides slope arrange down, and solid impurity in the waste liquid can slide to both sides along the upper surface of filter screen 2, and then the middle part of above-mentioned solid impurity difficult jam filter screen 2 can effectively reduce the change number of times or the clearance number of times of filter screen 2.
The upper surface of first baffle 12 is arranged towards one side slope, and the lower one side of first baffle 12 upper surface is provided with first through-hole, and the waste liquid of filtering the cavity bottom can flow towards one side along the upper surface of first baffle 12 to the waste liquid in the filtering the cavity almost can all flow to reaction cavity along first through-hole, avoids the waste liquid to save at the filtering the cavity bottom.
Filter and be linked together through first water pipe 8 of buckling between the cavity and the reaction cavity, first water pipe 8 of buckling specifically is the PE plastic tubing, and the vertical part of first water pipe 8 of buckling is inserted in first through-hole, and the horizontal segment of first water pipe 8 of buckling is fixed in the lower surface of first baffle 12, and the lower surface of the horizontal segment of first water pipe 8 of buckling is provided with a plurality of first delivery ports 81. The waste liquid of filtering the cavity bottom can be followed a plurality of first delivery ports 81 on the first water pipe 8 of buckling and flowed to it is more even when the waste liquid gets into the reaction cavity, is favorable to waste liquid and reactant intensive mixing reaction, and is better to the reaction treatment effect of waste liquid.
The upper surface of second baffle 13 is arranged towards one side slope, and the lower one side of second baffle 13 upper surface is provided with the second through-hole, and the waste liquid of reaction cavity bottom can flow towards one side along the upper surface of second baffle 13 to the waste liquid in the reaction cavity almost can all flow to disinfection cavity along the second through-hole, avoids the waste liquid to save at reaction cavity bottom.
The reaction cavity and the disinfection cavity are communicated with each other through a second bent water pipe 9, the second bent water pipe 9 is a PE plastic pipe, the vertical part of the second bent water pipe 9 is inserted into the second through hole and is provided with a valve 4, the horizontal part of the second bent water pipe 9 is positioned below the light-transmitting partition plate 6, and the lower surface of the horizontal part of the second bent water pipe 9 is provided with a plurality of second water outlets 91. The waste liquid of reaction cavity bottom can follow a plurality of second delivery ports 91 on the second water pipe 9 of buckling and flow to it is more even when the waste liquid gets into the disinfection cavity, is favorable to the waste liquid to be fully shone by ultraviolet lamp 5, and is better to the disinfection treatment effect of waste liquid.
Referring to fig. 1 and 2, a plurality of supporting members 7 are installed on the inner wall of the tank body 1, the periphery of the filter screen 2 is placed on the supporting members 7, the supporting members 7 have a good blocking and supporting function on the periphery of the filter screen 2, the filter screen 2 is very convenient to install, and the filter screen 2 can be smoothly taken out from the waste liquid water gap 11 by properly lifting and rotating the filter screen 2 when the filter screen 2 is detached.
The support 7 includes: the pool body comprises an embedded rod 71 and a magnet 72, wherein one part of the embedded rod 71 is embedded and fixed in the wall of the pool body 1, the upper surface of the other part of the embedded rod 71 is embedded with the magnet 72, the filter screen 2 is made of stainless steel, and the magnet 72 and the filter screen 2 are fixed in a magnetic attraction mode. Pre-buried pole 71 provides the mounted position for magnet 72, through increasing magnet 72, can further through the fixed filter screen 2 of magnetic attraction, filter screen 2 installation back is more firm, difficult rocking, upwards mentions filter screen 2 when dismantling filter screen 2 to overcome this magnetic attraction acting can.
The implementation principle of the embodiment is as follows: after the waste liquid enters the filtering cavity from the waste liquid water gap 11, the filtering net 2 can filter solid impurities in the waste liquid, the reactant adding port 15 can facilitate workers to add a reactant into the reaction cavity, after the waste liquid enters the reaction cavity from the filtering cavity, the waste liquid can be fully contacted with the reactant through the stirring effect of the stirring assembly 3, metal elements in the waste liquid can be reacted and precipitated, after the waste liquid fully reacts in the reaction cavity, the valve 4 can be opened, so that the waste liquid can flow into the disinfecting cavity, ultraviolet rays are emitted through the ultraviolet lamp 5, the waste liquid is disinfected, the light-transmitting partition plate 6 can ensure that light rays pass through, the waste liquid can be effectively prevented from contacting the ultraviolet lamp 5, and the ultraviolet lamp 5 has a certain protection effect; whole cell body 1 formula spatial structure as an organic whole, and lead to and increase first baffle 12, second baffle 13 in order to separate for filtering cavity, reaction cavity and disinfection cavity, can not only realize carrying out above-mentioned processing procedure to the waste liquid, compact structure moreover, occupy the place area less.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides an electronic connector surface coating postcleaning waste liquid processing apparatus which characterized in that includes: the device comprises a tank body (1), a filter screen (2), a stirring assembly (3), a valve (4), an ultraviolet lamp (5), a light-transmitting partition plate (6), a water outlet pipe (10) and a water pump (101);
the waste liquid water inlet (11) is formed in the top of the tank body (1), a first partition plate (12) and a second partition plate (13) are arranged in the tank body (1), a filtering cavity, a reaction cavity and a disinfection cavity are sequentially arranged from top to bottom and communicated with each other, a filter screen (2) for primarily filtering waste liquid is arranged in the filtering cavity, one or more groups of stirring assemblies (3) are arranged on the tank body (1), the stirring parts of the stirring assemblies (3) extending into the reaction cavity are horizontally arranged, a reactant adding port (15) is formed in the tank body (1), and the reactant adding port (15) is located at the top of the reaction cavity;
the reaction cavity with the intercommunication department of disinfection cavity is provided with valve (4), ultraviolet lamp (5) be equipped with many and install in the lower surface of second baffle (13), printing opacity baffle (6) level is located just be located in the disinfection cavity the below of ultraviolet lamp (5), the bottom intercommunication of disinfection cavity has outlet pipe (10), be provided with on outlet pipe (10) suction pump (101).
2. The device for treating waste cleaning solution after surface coating of electronic connector according to claim 1, wherein the stirring assembly (3) comprises: the stirring device comprises a mounting frame (31), a stirring motor (32), a stirring shaft (33) and stirring blades (34);
(mixing) shaft (33) horizontal arrangement and rotation assembly in cell body (1), (mixing) shaft (33) stretch out the one end of reaction cavity with the output shaft of agitator motor (32) is connected, the externally mounted of cell body (1) has mounting bracket (31), agitator motor (32) install in on mounting bracket (31), stirring paddle leaf (34) are equipped with a plurality ofly and evenly are fixed in on (mixing) shaft (33).
3. The device for treating the post-coating cleaning waste liquid of the electronic connector surface as claimed in claim 2, wherein two sets of the stirring assemblies (3) are provided, and two of the mounting frames (31) are respectively located at opposite sides of the tank body (1).
4. The device for treating waste cleaning solution after surface coating of electronic connectors as claimed in claim 1, wherein the upper surface of the filter screen (2) is arranged obliquely downwards from the middle to both sides.
5. The apparatus for treating the post-coating cleaning waste liquid of the electronic connector surface as claimed in claim 1, wherein a plurality of supporting members (7) are installed on the inner wall of the tank body (1), and the periphery of the filter screen (2) is placed on the supporting members (7).
6. The device for treating waste cleaning solution after surface coating of electronic connector according to claim 5, wherein the supporting member (7) comprises: pre-buried pole (71) and magnet (72), partly pre-buried being fixed in of pre-buried pole (71) in cell body (1) wall, the upper surface of another part of pre-buried pole (71) is inlayed and is equipped with magnet (72), filter screen (2) are made by stainless steel material, magnet (72) with filter screen (2) magnetism is inhaled fixedly.
7. The device for treating the post-plating cleaning waste liquid of the electronic connector as claimed in claim 1, wherein the upper surface of the first partition plate (12) is arranged obliquely toward one side, and a lower side of the upper surface of the first partition plate (12) is provided with a first through hole.
8. The device for treating the post-coating cleaning waste liquid of the electronic connector surface as claimed in claim 7, wherein the filtering cavity is communicated with the reaction cavity through a first bent water pipe (8), a vertical part of the first bent water pipe (8) is inserted into the first through hole, a horizontal part of the first bent water pipe (8) is fixed on the lower surface of the first partition plate (12), and a plurality of first water outlets (81) are arranged on the lower surface of the horizontal part of the first bent water pipe (8).
9. The device for treating the post-plating cleaning waste liquid of the electronic connector as claimed in claim 1, wherein the upper surface of the second partition plate (13) is arranged obliquely toward one side, and a lower side of the upper surface of the second partition plate (13) is provided with a second through hole.
10. The device for treating the waste cleaning solution after the surface coating of the electronic connector is performed as claimed in claim 9, wherein the reaction cavity is communicated with the disinfection cavity through a second bent water pipe (9), a vertical part of the second bent water pipe (9) is inserted into the second through hole and is provided with the valve (4), a horizontal part of the second bent water pipe (9) is located below the light-transmitting partition plate (6), and a plurality of second water outlets (91) are formed in the lower surface of the horizontal part of the second bent water pipe (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049539.7U CN211813912U (en) | 2020-01-09 | 2020-01-09 | Electronic connector surface coating post-cleaning waste liquid treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020049539.7U CN211813912U (en) | 2020-01-09 | 2020-01-09 | Electronic connector surface coating post-cleaning waste liquid treatment device |
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| CN211813912U true CN211813912U (en) | 2020-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023935A (en) * | 2021-02-27 | 2021-06-25 | 安徽庆鼎科技有限公司 | Nickel plating wastewater treatment device |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023935A (en) * | 2021-02-27 | 2021-06-25 | 安徽庆鼎科技有限公司 | Nickel plating wastewater treatment device |
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