Electroplating wastewater staged treatment and recovery system

Abstract

The invention relates to a post-electroplating wastewater staged treatment and recovery system which comprises a reaction tank and a shielding cover body, the shielding cover body is detachably and fixedly connected with the reaction tank, a plurality of water inlet holes are formed in the peripheral side of the shielding cover body, the water inlet holes are connected with water inlet pipes, rolling ball sealing devices are arranged in the water inlet holes, and water curtain generating devices are arranged at the water inlet pipes; by arranging the shielding cover body and the rolling ball sealing device, the electroplating wastewater treatment device has the technical effects that various harmful gases generated in the stages of wastewater entering, wastewater flowing, wastewater reaction and the like are effectively prevented from overflowing, and the construction safety during wastewater treatment after electroplating is greatly guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of electroplating wastewater treatment, and in particular to a post-electroplating wastewater classification treatment and recovery system. Background Art

[0002] At present, the hierarchical treatment of post-electroplating wastewater refers to dividing the wastewater treatment process into different treatment stages, and each stage performs specific treatment on different pollutants to achieve the expected treatment effect. Specifically, the hierarchical treatment of post-electroplating wastewater mainly includes the following three levels: Primary treatment: mainly uses physical treatment methods, such as sedimentation, filtration, aeration, etc., to remove suspended solids, floating objects and some suspended pollutants in wastewater. Primary treatment can reduce the degree of water corruption and reduce the load for subsequent treatment; Secondary treatment: Biological treatment methods are usually used, such as activated sludge method, biofilm method, etc., mainly to remove dissolved and colloidal organic matter, some ammonia and phosphorus and other nutrients in wastewater. Secondary treatment can significantly reduce BOD and COD, so that the wastewater meets the discharge standards; Tertiary treatment: also known as advanced treatment or deep treatment, it uses a variety of physical and chemical methods, such as coagulation and sedimentation, adsorption, ion exchange, electrodialysis, reverse osmosis, etc., to further remove refractory organic matter, ammonia, phosphorus, heavy metals and pathogenic microorganisms in wastewater. Tertiary treatment aims to improve the quality of effluent water to meet higher reuse requirements or direct discharge standards. Through these three levels of treatment, electroplating wastewater can be effectively purified to ensure that the quality of discharged or reused water meets relevant standards. Recycling means that the wastewater after the above treatment can be reused, such as through deep membrane treatment, filter press and evaporation processes, and finally become reusable reused water.

[0003] Among the three levels of treatment, primary treatment may produce harmful gases. This is because primary treatment usually refers to physical and chemical treatment, which is mainly used to remove cyanide and heavy metals in wastewater. However, harmful gases may be produced or released in this process. For example, cyanide-containing wastewater may produce toxic hydrogen cyanide gas during treatment. This gas is extremely toxic and can cause death if inhaled in trace amounts. Therefore, when treating cyanide-containing wastewater, strict measures need to be taken, such as the cyanide-breaking reaction pool should be covered and closed, and a ventilation system should be established to prevent the escape of harmful gases. In the electroplating process, the main sources of wastewater before treatment include acidic gases generated in the pre-treatment stages such as pickling and alkali washing, various harmful gases generated during the volatilization and cleaning of the plating solution, and harmful gases released in the wastewater treatment process such as neutralization and precipitation.

[0004] Therefore, regarding the existing electroplating wastewater classification treatment equipment, setting up a facility with all-round prevention of harmful gas escape is very important for the current actual production in this field.

[0005] Regarding the above technical problems, the Chinese patent with the authorization announcement number CN118515336A proposes a post-electroplating wastewater classification treatment and recovery system, which relates to the field of wastewater treatment technology and solves the problem that when the wastewater is discharged, the heavy metal ions that float up and are wrapped in bubbles are easily discharged from the inside of the pipe with the wastewater, affecting the wastewater treatment effect. The post-electroplating wastewater classification treatment and recovery system includes a wastewater treatment tank, an upper shielding cover, an inner box and a wastewater classification treatment mechanism. The top of the wastewater treatment tank is set to an opening, and the upper shielding cover installed by screws is sealed. The inner top of the wastewater treatment tank is installed with an inner box, and the interior of the wastewater treatment tank is provided with a wastewater classification treatment mechanism extending to the inside of the inner box. In the present invention, the separation operation of wastewater and heavy metal ions can be realized before the wastewater is discharged, reducing the probability that the suspended heavy metal ions can be discharged together when the wastewater is discharged. At the same time, the wastewater can be graded and treated, and the efficiency and effect of treating impurities in the wastewater can be improved.

[0006] However, regarding the harmful gases generated in the primary treatment process, there are no practical optimizations and improvements in gas handling or sealing treatment, and it is impossible to effectively prevent the harmful gases from overflowing. Summary of the invention

[0007] In order to solve the above technical problems, the present application provides a post-electroplating wastewater classification treatment and recovery system to solve the existing technical problem of harmful gases generated during post-electroplating wastewater treatment causing production hazards.

[0008] The present application provides a post-electroplating wastewater classification treatment and recovery system, which adopts the following technical solutions: A post-electroplating wastewater classification treatment and recovery system comprises a reaction tank and a shielding cover, wherein the shielding cover is detachably and fixedly connected to the reaction tank, a plurality of water inlet holes are provided on the periphery of the shielding cover, the water inlet holes are connected to water inlet pipes, a rolling ball sealing device is provided in the water inlet holes, and a water curtain generating device is provided at the water inlet pipe.

[0009] By adopting the above technical scheme, the present invention can effectively prevent the overflow of various harmful gases generated during the stages of wastewater entry, wastewater flow and wastewater reaction, thereby greatly ensuring the construction safety during wastewater treatment after electroplating.

[0010] Preferably, the rolling ball sealing device includes a receiving ring fixedly connected to the shielding cover body, the receiving ring is located below the water inlet hole, a partial spherical surface is opened on one side of the receiving ring, a support ring is arranged at the bottom of the receiving ring, the support ring is fixedly connected to the inner wall of the shielding cover body, a sealing ball is placed on the receiving ring, a plurality of water grooves are opened on the sealing ball, a plurality of stop plates are arranged on the top of the sealing ball, a plurality of stop blocks are arranged in the shielding cover body, and a switch button for controlling the water curtain generating device is arranged in the stop block.

[0011] Through the above technical scheme, the present invention can achieve the effect of preventing gas leakage before and when the waste water after electroplating enters the reaction tank. First, one or more water inlets are selected to connect the waste water after electroplating to the water inlet pipe through a pipeline. It should be noted here that when choosing to connect multiple water inlet holes, adjacent water inlet pipes need to be selected for connection. After connection and sealing, the waste water after electroplating first flows into the shielding cover through the water inlet pipe. The connecting hole of the water inlet pipe inside the shielding cover is located above the receiving ring. After the waste water after electroplating enters, it will automatically flow into the surface of the sealing ball and accumulate in the water trough. When the waste water after electroplating accumulates to a certain amount, The sealing ball is deflected due to the weight of the post-electroplating wastewater in the water trough, and the bottom of the water trough is rotated outside the receiving ring. At this time, the post-electroplating wastewater in the water trough can flow into the reaction tank, and the top of the water trough can cooperate with the receiving ring to form a new sealed space, thereby preventing harmful gases generated by the post-electroplating wastewater in the reaction tank from flowing into the top of the shielding cover, thereby isolating harmful gases from overflowing from the water inlet pipe when the post-electroplating wastewater is injected and maintained, and isolating harmful gases from flowing out of the water inlet pipe. Through the purely mechanical structure, the safety and durability of the facility are guaranteed to a great extent, thereby ensuring the safety of the staff.

[0012] Preferably, the sealing ball is hollow inside, a mounting hole is provided on the top of the sealing ball, a top cover is connected to the mounting hole via bolts, a connecting column is provided at the bottom of the sealing ball, and a counterweight bearing is provided on the connecting column.

[0013] Through the above technical scheme, the present invention can realize that after the sealing ball rotates, the centrifugal force generated by the self-weight and slight rotation of the counterweight bearing can be used to realize that the sealing ball automatically returns to its initial position after being driven to move by the wastewater after electroplating, thereby further ensuring the automation and sealing performance of the equipment.

[0014] Preferably, an air pressure expansion detection device is provided on the top of the shielding cover body, and the air pressure expansion detection device includes a detection tube fixedly connected to the top of the shielding cover body, a detection ball is connected above the detection tube, the detection ball is elastic, and a pressure sensor and an alarm are provided on the top of the detection ball.

[0015] Through the above technical scheme, the present invention can realize that when the relevant structure of the sealing ball is worn, causing the gas to flow to the top of the sealing ball, at this time, since the water inlet pipe is connected to the external pipeline and is sealed, the gas will automatically flow upward to the expansion detection device, causing the detection ball to inflate and expand, thereby contacting the pressure sensor located on the top of the detection ball. Through the existing technology, the signal can be transmitted to the alarm to realize the alarm. At this time, the staff can clearly know that the equipment has failed and there is a risk of leakage. The equipment operation can be stopped, and the equipment can be repaired after strengthening protection, without the phenomenon of personnel poisoning by harmful gases caused by equipment damage.

[0016] Preferably, a temporary air storage box is provided on one side of the air pressure expansion detection device, the temporary air storage box is connected to the detection ball through an air release pipe, a pressure valve is provided in the air release pipe, and a spray head and a containing box are provided in the temporary air storage box.

[0017] Through the above technical scheme, the present invention can realize that when the sealing ball related structure is worn, causing the gas to flow to the top of the sealing ball, at this time, after the detection ball expands to a certain extent and activates the pressure sensor, in addition to activating the alarm, the sprinkler head located in the temporary storage gas box can also be activated through the existing technology. At this time, when the gas in the detection ball reaches a certain pressure, the air pressure increases again to push open the pressure valve, allowing the gas to enter the temporary storage gas box, contact with the chemical agent in the storage box in the temporary storage gas box and initially neutralize it, thereby minimizing the gas hazard to the greatest extent. At the same time, such a setting also ensures that when the gas leakage rate is fast, the time from the alarm to the workers wearing protective measures can be delayed as much as possible, and the toxicity of the overflowing gas can be minimized to protect the personal safety of the workers as much as possible.

[0018] Preferably, the reaction pool and the shielding cover are connected via a thickened flange ring, an anti-leakage sealing ring is arranged inside the thickened flange ring, and a secondary protective ring is arranged outside the thickened flange ring.

[0019] Through the above technical scheme, the present invention can ensure a high degree of sealing at the connection between the shielding cover and the reaction pool. The downward pressure generated by the thickened flange ring after connection can compress the leakage-proof sealing ring to achieve sealing. In addition, there is a secondary protective ring as a secondary insurance, which can avoid gas leakage at the connection between the shielding cover and the reaction pool to the greatest extent.

[0020] Preferably, the anti-leakage sealing ring comprises a sealing soft ring and an M-shaped deformable ring, and the sealing soft ring is located on the inner side of the M-shaped deformable ring.

[0021] Through the above technical scheme, the present invention can realize the downward pressure after the thickened flange ring is connected, compressing the M-shaped deformation ring to produce deformation, compressing the sealing soft ring to press against the thickened flange ring connection, and achieving excellent sealing effect.

[0022] Preferably, the secondary protection ring includes a water collecting ring fixedly connected to the shielding cover body, the bottom of the water collecting ring is fixedly connected to the thickened flange ring, and the water collecting ring can recover the water dropped by the water curtain generating device.

[0023] Through the above technical scheme, the present invention can realize the formation of a water ring by recycling the water sprayed by the water curtain generating device, further seal the thickened flange ring, and further prevent harmful gases from leaking from the connection between the cover body and the reaction tank.

[0024] Preferably, the water curtain generating device includes a water supply pipe and a water curtain generator, the water curtain generator is connected to a start button on the inside of the shielding cover body through a sealing tube, the start button is connected to the shielding cover body through a sealing block, and a sealing gasket is arranged between the sealing block and the shielding cover body.

[0025] Through the above technical solution, the present invention can realize that when the rolling ball sealing device is in operation, the water curtain generating device on one or more nearby water inlets is started to spray a water curtain, thereby optimizing the sealing effect of the connection between the water inlet and the external water pipe.

[0026] Preferably, a sealing column is inserted into the water inlet pipe, a plurality of sealing rings are arranged on the sealing column, a handle is arranged on the sealing column, and a top protective cover is arranged on the shielding cover body.

[0027] Through the above technical scheme, the present invention can realize the selection of a water inlet pipe facing in any direction for use according to actual conditions without moving the reaction equipment, which is extremely convenient in actual use, and the multiple sealing rings of the sealing column can also ensure the sealing without using the water inlet pipe.

[0028] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present invention can effectively prevent the overflow of various harmful gases generated during the stages of wastewater inflow, wastewater flow and wastewater reaction, thereby greatly ensuring the construction safety during wastewater treatment after electroplating.

[0029] 2. The present invention can realize sealing of the counter pool and the cover body in multiple directions in multiple ways, and has detection function and alarm function.

[0030] 3. The present invention provides an M-shaped deformable ring structure and a secondary protective ring structure and uses a multiple sealing method to effectively prevent harmful gases from leaking from the connection between the shielding cover and the reaction pool.

[0031] 4. The present invention can realize the initial gas leakage processing function when the reaction pool gas leaks out, and when used with the physical gas leakage detection method and the alarm device, it can provide a clear alarm reminder to the construction personnel when the harmful gas leaks out.

[0032] 5. When the reaction pool gas leaks, the present invention can automatically perform preliminary treatment on the leaked harmful gas, thereby greatly reducing the damage caused to construction workers by the leakage of harmful gas.

[0033] 6. The present invention uses spray liquid to protect the water inlet pipe. The recyclable spray liquid can firstly prevent the harmful substances in the spray liquid itself from polluting the working environment, and can achieve the technical effect of energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the post-electroplating wastewater classification treatment and recovery system of the present invention; Figure 2 It is a cross-sectional schematic diagram of the post-electroplating wastewater classification treatment and recovery system of the present invention; Figure 3 yes Figure 2 A is an enlarged schematic diagram; Figure 4 It is a schematic diagram of the internal structure of the post-electroplating wastewater classification treatment and recovery system of the present invention; Figure 5 yes Figure 4 A magnified schematic diagram of B; Figure 6 yes Figure 4 A magnified schematic diagram of middle C; Figure 7 yes Figure 4 A magnified schematic diagram of D in the middle.

[0035] Description of the accompanying drawings: 1, reaction pool; 2, shielding cover; 3, water inlet hole; 4, water inlet pipe; 5, rolling ball sealing device; 6, water curtain generating device; 7, receiving ring; 8, supporting ring; 9, sealing ball; 10, water trough; 11, stopper; 12, stopper block; 13, mounting hole; 14, top cover; 15, connecting column; 16, counterweight bearing; 17, air pressure expansion detection device; 18, detection tube; 19, detection ball; 20, Pressure sensor; 21. Temporary air storage box; 22. Air release pipe; 23. Pressure valve; 24. Sprinkler head; 25. Container; 26. Thickened flange ring; 27. Leak-proof sealing ring; 28. Secondary protective ring; 29. ​​Sealing soft ring; 30. M-shaped deformation ring; 31. Water collecting ring; 32. Water supply pipe; 33. Water curtain generator; 34. Start button; 35. Sealing gasket; 36. Sealing column; 37. Sealing ring; 38. Protective cover. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-7 This application is described in further detail.

[0037] The present application embodiment discloses a post-electroplating wastewater classification treatment and recovery system. Figure 1-7 The present invention discloses a post-electroplating wastewater classification treatment and recovery system, which includes a reaction pool 1 and a shielding cover 2, the shielding cover 2 is detachably fixedly connected to the reaction pool 1, a plurality of water inlet holes 3 are opened on the periphery of the shielding cover 2, the water inlet holes 3 are connected to a water inlet pipe 4, a rolling ball sealing device 5 is arranged in the water inlet hole 3, and a water curtain generating device 6 is arranged at the water inlet pipe 4. By setting the shielding cover 2, the present invention can effectively prevent the overflow of various harmful gases generated in the stages including wastewater entry, wastewater flow and wastewater reaction, thereby greatly ensuring the construction safety during the treatment of post-electroplating wastewater.

[0038] Further, the rolling ball sealing device 5 includes a receiving ring 7 fixedly connected to the shielding cover 2, the receiving ring 7 is located below the water inlet 3, and a part of the spherical surface is opened on one side of the receiving ring 7, a sealing ball 9 is placed on the receiving ring 7, a plurality of water grooves 10 are opened on the sealing ball 9, a plurality of stop plates 11 are arranged on the top of the sealing ball 9, a plurality of stop grooves are arranged in the shielding cover 2, and a switch button for controlling the water curtain generating device 6 is arranged in the stop groove. The sealing ball 9 is hollow inside, a mounting hole 13 is opened on the top of the sealing ball 9, a connecting column 15 is arranged at the bottom of the sealing ball 9, and a counterweight block is inserted on the connecting column 15. The water curtain generating device 6 includes a water supply pipe 32 and a water curtain generator 33, the water curtain generator 33 is connected to a start button 34 on the inner side of the shielding cover 2 through a sealing pipe, the start button 34 is connected to the shielding cover 2 through a sealing block, and a sealing gasket 35 is arranged between the sealing block and the shielding cover 2.

[0039] Thus, when the present invention is actually used, one or more water inlets are first selected to connect the waste water after electroplating to the water inlet pipe 4 through a pipeline. It should be noted here that when selecting to connect multiple water inlet holes 3, adjacent water inlet pipes 4 need to be selected for connection. After connection and sealing, the waste water after electroplating first flows into the shielding cover 2 through the water inlet pipe 4. The connecting hole of the water inlet pipe 4 and the shielding cover 2 are located above the receiving ring 7. After the waste water after electroplating enters, it will automatically flow into the spherical surface of the sealing ball 9 and accumulate in the water trough 10. When the waste water after electroplating accumulates to a certain amount, the sealing ball 9 is blocked by the waste water after electroplating in the water trough 10. The weight of the water produces a deflection, rotating the bottom of the water trough 10 to outside the receiving ring 7. At this time, the electroplating wastewater in the water trough 10 can flow into the reaction pool 1, and the top of the water trough 10 can cooperate with the receiving ring 7 to form a new sealed space, thereby preventing the harmful gases generated by the electroplating wastewater in the reaction pool 1 from flowing into the top of the shielding cover 2, thereby isolating the harmful gases from overflowing from the water inlet pipe 4 when the electroplating wastewater is injected and maintained, and isolating the situation where the harmful gases flow out of the water inlet pipe 4. Through a purely mechanical structure, the safety and durability of the facility are greatly guaranteed, thereby ensuring the safety of the staff. It can effectively prevent the overflow of various harmful gases generated during the stages of wastewater entry, wastewater flow and wastewater reaction, and greatly ensure the construction safety during the treatment of electroplating wastewater.

[0040] Furthermore, a gas pressure expansion detection device 17 is provided on the top of the shielding cover 2. The gas pressure expansion detection device 17 includes a detection tube 18 fixedly connected to the top of the shielding cover 2. A detection ball 19 is connected above the detection tube 18. The detection ball 19 is elastic. A pressure sensor 20 and an alarm are provided on the top of the detection ball 19. A temporary air storage box 21 is provided on one side of the gas pressure expansion detection device 17. The temporary air storage box 21 is connected to the detection ball 19 through a deflation pipe 22. A pressure valve 23 is provided in the deflation pipe 22. A spray head 24 and a receiving box 25 are provided in the temporary air storage box 21.

[0041] With such an arrangement, when the post-electroplating wastewater classification treatment and recovery system designed by the present invention leaks due to wear and other reasons, when harmful gases flow to the top of the sealing ball 9, at this time, since the water inlet pipe 4 is connected to the external pipeline and sealed, the gas will automatically flow upward to the expansion detection device, so that the detection ball 19 is inflated and expanded, thereby contacting the pressure sensor 20 located on the top of the detection ball 19. Through the existing technology, the signal can be transmitted to the alarm to realize the alarm. At this time, the staff can clearly know that the equipment has failed and there is a risk of leakage, so they can stop the equipment operation and carry out equipment maintenance after strengthening protection, without the phenomenon of personnel poisoning by harmful gases caused by equipment damage.

[0042] At the same time, when the amount of leaked gas is large, after the detection ball 19 expands to a certain extent and activates the pressure sensor 20, in addition to activating the alarm, the sprinkler head 24 located in the temporary storage gas box 21 can also be activated through existing technology. At this time, when the gas in the detection ball 19 reaches a certain pressure, the air pressure increases again to push open the pressure valve 23, allowing the gas to enter the temporary storage gas box 21, and contact and initially neutralize the chemical agent in the storage box 25 in the temporary storage gas box 21, thereby minimizing the gas hazard to the greatest extent. At the same time, such a setting also ensures that when the gas leakage rate is fast, the time from the alarm to the workers wearing protective measures can be delayed as much as possible, and the toxicity of the overflowing gas can be minimized to protect the personal safety of the workers as much as possible.

[0043] Furthermore, the reaction pool 1 and the shielding cover 2 are connected by a thickened flange ring 26, an anti-leakage sealing ring is arranged inside the thickened flange ring 26, and a secondary protective ring 28 is arranged outside the thickened flange ring 26. The anti-leakage sealing ring includes a sealing soft ring 29 and an M-shaped deformation ring 30, and the sealing soft ring 29 is located inside the M-shaped edge ring. The secondary protective ring 28 includes a water collecting ring 31 fixedly connected to the shielding cover 2, and the bottom of the water collecting ring 31 is fixedly connected to the thickened flange ring 26, and the water collecting ring 31 can recycle the water dropped by the water curtain generating device 6.

[0044] With such an arrangement, firstly, the water sprayed by the recycling water curtain generating device 6 can form a water ring, further seal the thickened flange ring 26, and further prevent harmful gases from leaking from the connection between the shielding cover 2 and the reaction tank 1. Secondly, when the rolling ball sealing device 5 is in operation, the water curtain generating device 6 on one or more nearby water inlets can be started to spray a water curtain, thereby optimizing the sealing effect of the connection between the water inlet and the external water pipe. Finally, it is possible to ensure a high degree of sealing at the connection between the shielding cover 2 and the reaction tank 1, and the downward pressure of the thickened flange ring 26 after the connection compresses the upper and lower surfaces of the M-shaped deformation ring 30, causing the M-shaped deformation ring 30 to deform, thereby compressing the sealing soft ring 29, making it fit more closely with the thickened flange ring 26, thereby further optimizing the sealing effect of the thick flange ring 26.

[0045] In addition, there is a secondary protection ring 28 as a secondary insurance. In actual use, due to the open structure of the conical surface of the upper part of the secondary protection ring 28, the spray liquid sprayed by the water curtain generating device 6 can be received and collected in the lower part of the secondary protection ring 28, forming a circular sealing water ring on the outside of the thickened flange ring 26, which can be used as a secondary protection measure to prevent the leakage of harmful gases. In addition, a spray liquid recovery device and a circulation device can be connected to the outside of the earphone protection ring 28. The existing technology of this recovery device and circulation device is very mature and its cost is disclosed. It can be directly installed and used. It should be noted that when installing the recovery device and the circulation device, its water inlet needs to be higher than the thickened flange ring 26, so as to realize the recovery and circulation of the spray liquid on the premise of ensuring that there is enough sealing water ring formed by the spray liquid on the outside of the thickened flange ring 26.

[0046] Such arrangement can achieve maximum avoidance of gas leakage at the connection between the shielding cover 2 and the reaction pool 1. Recycling and reusing the sprayed liquid can firstly prevent the harmful substances in the spray liquid itself from polluting the working environment, and can achieve the technical effect of energy saving and environmental protection.

[0047] The working principle of a post-electroplating wastewater classification treatment and recovery system in this application is: First, the targeted structure and function to prevent the leakage of harmful gases: Gas sealing treatment is performed on the process of electroplating wastewater entering the system. First, the connection and sealing of the relatively simple external pipeline and the water inlet pipe 4 are ensured. Then, the electroplating wastewater is connected to the water inlet pipe 4 through the pipeline by setting a rolling ball sealing device 5 and the water inlet pipe 4. It should be noted here that when choosing to connect multiple water inlet holes 3, it is necessary to select adjacent water inlet pipes 4 for connection. After the connection and sealing, the electroplating wastewater first flows into the shielding cover 2 through the water inlet pipe 4. The connecting hole of the water inlet pipe 4 and the shielding cover 2 is located above the receiving ring 7. After the electroplating wastewater enters, it will automatically flow into the spherical surface of the sealing ball 9 and accumulate in the water trough 10. When the electroplating wastewater accumulates to After a certain amount, the sealing ball 9 is deflected due to the weight of the post-electroplating wastewater in the water trough 10, and the lower part of the water trough 10 is rotated to the outside of the receiving ring 7. At this time, the post-electroplating wastewater in the water trough 10 can flow into the reaction tank 1, and the upper part of the water trough 10 can cooperate with the receiving ring 7 to form a new sealed space, thereby preventing the harmful gas generated by the post-electroplating wastewater in the reaction tank 1 from flowing into the upper part of the shielding cover 2, thereby isolating the harmful gas from overflowing from the water inlet pipe 4 when the post-electroplating wastewater is injected and reacted, and isolating the harmful gas from flowing out of the water inlet pipe 4. Through the purely mechanical structure, the safety and durability of the facility are guaranteed to a great extent, thereby ensuring the safety of the staff.

[0048] The second is the targeted structure and function to prevent the leakage of harmful gases: It is mainly aimed at sealing and detecting harmful gases when the wastewater after electroplating enters the system and reacts in the reaction pool 1. By setting up an expansion detection device, when the relevant structure of the sealing ball 9 is worn, causing the gas to flow to the top of the sealing ball 9, at this time, since the water inlet pipe 4 is connected to the external pipeline and sealed, the gas will automatically flow upward to the expansion detection device, so that the detection ball 19 is inflated and expanded, thereby contacting the pressure sensor 20 located on the top of the detection ball 19. Through the existing technology, the signal can be transmitted to the alarm to realize the alarm. At this time, the staff can clearly know that the equipment has failed and there is a risk of gas leakage. The equipment operation can be stopped and the equipment can be repaired after strengthening protection, without the phenomenon of personnel poisoning by harmful gases caused by equipment damage.

[0049] Then there are the third targeted structures and functions to prevent harmful gas leakage: It is mainly aimed at the harmful gas that has a certain pressure when the waste water after electroplating enters the system and reacts in the reaction pool 1. When leakage is about to occur, at this time, after the detection ball 19 expands to a certain extent and starts the pressure sensor 20, in addition to starting the alarm, the spray head 24 located in the temporary storage gas box 21 can also be started through the existing technology. At this time, when the gas in the detection ball 19 reaches a certain pressure, the air pressure increases again to push open the pressure valve 23, so that the gas enters the temporary storage gas box 21, and contacts and preliminarily neutralizes the chemical agent in the storage box 25 in the temporary storage gas box 21, thereby minimizing the gas hazard to the greatest extent. At the same time, such a setting also ensures that when the gas leakage speed is fast, the time from the alarm to the workers wearing protective measures can be delayed as much as possible, and the toxicity of the overflowed gas can be minimized to protect the personal safety of the workers as much as possible.

[0050] The targeted structure and function of the parallel connection to prevent the leakage of harmful gases: It mainly comprises the core technical structure mentioned in the present invention and the reaction pool 1, namely, the first and second structures at the connection between the shielding cover body 2 to prevent the overflow of harmful gases. By designing the M-shaped deformable ring 30 and the sealing soft ring 29, it is achieved that under the conventional sealing effect of the sealing soft ring 29, further pressure is applied to achieve a better sealing effect. The secondary protective ring 28 can realize the formation of a water ring with the water sprayed by the recycling water curtain generating device 6, and further seal the thickened flange ring 26. As a secondary insurance, it can avoid gas leakage at the connection between the shielding cover body 2 and the reaction pool 1 to the greatest extent.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A post-electroplating wastewater classification treatment and recovery system, comprising a reaction tank (1) and a shielding cover (2), characterized in that: The shielding cover (2) is detachably fixedly connected to the reaction pool (1); a plurality of water inlet holes (3) are provided on the periphery of the shielding cover (2); the water inlet holes (3) are connected to a water inlet pipe (4); a rolling ball sealing device (5) is provided in the water inlet hole (3); and a water curtain generating device (6) is provided at the water inlet pipe (4).

2. The post-electroplating wastewater classification treatment and recovery system according to claim 1 is characterized in that: The rolling ball sealing device (5) comprises a receiving ring (7) fixedly connected to the shielding cover (2); the receiving ring (7) is located below the water inlet hole (3); a part of a spherical surface is formed on one side of the receiving ring (7); a supporting ring (8) is provided at the bottom of the receiving ring (7); the supporting ring (8) is fixedly connected to the inner wall of the shielding cover (2); a sealing ball (9) is placed on the receiving ring (7); a plurality of water grooves (10) are formed on the sealing ball (9); a plurality of stop plates (11) are provided on the top of the sealing ball (9); a plurality of stop blocks (12) are provided in the shielding cover (2); a switch button for controlling the water curtain generating device (6) is provided in the stop blocks (12).

3. A post-electroplating wastewater classification treatment and recovery system according to claim 2, characterized in that: The sealing ball (9) is hollow inside, a mounting hole (13) is provided at the top of the sealing ball (9), a top cover (14) is connected to the mounting hole (13) via bolts, a connecting column (15) is provided at the bottom of the sealing ball (9), and a counterweight bearing (16) is provided on the connecting column (15).

4. The post-electroplating wastewater classification treatment and recovery system according to claim 1 is characterized in that: A gas pressure expansion detection device (17) is arranged on the top of the shielding cover body (2), and the gas pressure expansion detection device (17) comprises a detection tube (18) fixedly connected to the top of the shielding cover body (2), a detection ball (19) is connected above the detection tube (18), the detection ball (19) is elastic, and a pressure sensor (20) and an alarm are arranged on the top of the detection ball (19).

5. A post-electroplating wastewater classification treatment and recovery system according to claim 4, characterized in that: A temporary air storage box (21) is provided on one side of the air pressure expansion detection device (17). The temporary air storage box (21) is connected to the detection ball (19) via an air release pipe (22). A pressure valve (23) is provided in the air release pipe (22). A spray head (24) and a receiving box (25) are provided in the temporary air storage box (21).

6. The post-electroplating wastewater classification treatment and recovery system according to claim 1 is characterized in that: The reaction pool (1) and the shielding cover (2) are connected via a thickened flange ring (26); an anti-leakage sealing ring is arranged inside the thickened flange ring (26); and a secondary protective ring (28) is arranged outside the thickened flange ring (26).

7. A post-electroplating wastewater classification treatment and recovery system according to claim 6, characterized in that: The anti-leakage sealing ring comprises a sealing soft ring (29) and an M-shaped deformable ring (30), wherein the sealing soft ring (29) is located inside the M-shaped deformable ring (30).

8. The post-electroplating wastewater classification treatment and recovery system according to claim 7 is characterized in that: The secondary protection ring (28) comprises a water collecting ring (31) fixedly connected to the shielding cover body (2), the bottom of the water collecting ring (31) being fixedly connected to the thickened flange ring (26), and the water collecting ring (31) can recover water dropped by the water curtain generating device (6).

9. The post-electroplating wastewater classification treatment and recovery system according to claim 1, characterized in that: The water curtain generating device (6) comprises a water supply pipe (32) and a water curtain generator (33); the water curtain generator (33) is connected to a start button (34) on the inner side of the shielding cover (2) via a sealing tube; the start button (34) is connected to the shielding cover (2) via a sealing block; a sealing gasket (35) is provided between the sealing block and the shielding cover (2).

10. The post-electroplating wastewater classification treatment and recovery system according to claim 1, characterized in that: A sealing column (36) is inserted into the water inlet pipe (4), a plurality of sealing rings (37) are provided on the sealing column (36), a handle is provided on the sealing column (36), and a top protective cover (38) is provided on the shielding cover body (2).

Images