Printed circuit board production wastewater recovery device

Abstract

The invention provides a printed circuit board production wastewater recovery device, and belongs to the technical field of wastewater recovery, the printed circuit board production wastewater recovery device comprises a treatment tank I, a partition plate, a treatment tank II and an aeration assembly, a sieve plate is mounted in the treatment tank I, and the sieve plate is provided with an L-shaped baffle plate for gathering bubble impurities; the bottom of a vertical panel of the L-shaped baffle extends into the bottom of a horizontal panel of the treatment pond I, a driving assembly is mounted on the L-shaped baffle, a lifting box is vertically mounted on the driving assembly in a sliding manner, a drain valve is mounted at the bottom of the lifting box, a collecting box is clamped on the lifting box, and a through hole is formed in the collecting box. Impurities wrapping bubbles can flow in the water flow direction and are automatically gathered under the action of the L-shaped baffle, the impurities are collected in time through the lifting box and the collecting box, the impurities are prevented from being deposited into wastewater again, and the working efficiency of wastewater treatment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater recovery, and in particular to a printed circuit board production wastewater recovery device. Background Art

[0002] Circuit boards are crucial components of electronic devices, performing functions across multiple core processes, including mechanical support, electrical connections, signal transmission, and component protection. The production process involves multiple steps, including substrate processing, solder mask coating, and printed circuit board printing. Water is then used to clean dirt and oxides from the circuit board surface. When water comes into contact with debris, contaminants, and chemical solvents, these impurities mix with the water and become wastewater.

[0003] Wastewater can be effectively recycled and reused after being treated through filtration, sedimentation, and adsorption, which not only saves water resources but also reduces production costs. During the primary treatment of wastewater, the wastewater contains a variety of particulate impurities. If the particulate impurities cannot be removed from the wastewater in a timely manner, they will affect subsequent purification.

[0004] Referring to the Chinese patent publication CN209815851U, entitled "A Wastewater Recovery Device for Circuit Board Production," the device comprises a treatment tank, an aeration chamber, an aeration pipe, a conveyor belt, and a scraper. The aeration pipe extends to the bottom of the treatment tank. Air bubbles in the pipe envelop debris, causing it to float upward. A conveyor belt and scraper are installed above the treatment tank to collect floating debris. When the scraper rotates downward during the conveyor belt and scraper transport, debris falls off the scraper. The conveyor belt then catches the debris and transports it to the outside of the treatment tank.

[0005] Referring to the above technical solution, the scraper rotates driven by the conveyor belt, and the bubbles, debris and wastewater floating on the water surface flow to the next water tank. When the scraper contacts the water surface, the scraper can easily break the bubbles wrapped on the impurities, and then easily make the impurities sink into the wastewater again, which can easily reduce work efficiency. In addition, the traditional wastewater recovery device has a complex structure and is troublesome to operate. Therefore, the present invention provides a printed circuit board production wastewater recovery device, which can collect floating objects in the wastewater in time, is simple to operate, improves work efficiency and reduces labor costs. Summary of the Invention

[0006] The technical problem to be solved by the present invention is that bubbles and debris floating on the wastewater during primary treatment are prone to sink into the wastewater again.

[0007] In order to solve the above technical problems, the present invention provides a printed circuit board production wastewater recovery device, including treatment tank one, a partition, treatment tank two and an aeration assembly. A sieve plate is installed in treatment tank one to prevent debris from flowing into treatment tank two. An L-shaped baffle is provided on the sieve plate to gather bubbles and debris. The vertical panel, sieve plate and partition of the L-shaped baffle are arranged in parallel. The bottom of the vertical panel of the L-shaped baffle extends into the bottom of the horizontal panel of treatment tank one. A driving assembly is installed on the L-shaped baffle. A lifting box is vertically slidably installed on the driving assembly. A drain valve is installed at the bottom of the lifting box. A card slot is provided on the lifting box. A collection box located inside the lifting box is installed on the card slot. The collection box is provided with a through hole.

[0008] By adopting the above technical solution, when the wastewater in treatment pool one flows to treatment pool two, the debris with bubbles will flow along the direction of the water flow to the L-shaped baffle, and then flow along the L-shaped baffle to the lifting box. The lifting box can drive the collection box to move vertically up and down. When the collection box is lower than the water surface, the water flow can flow along the cavity inside the collection box, and the wastewater can flow into the lifting box through the perforation, and the drain valve can discharge the wastewater in time.

[0009] Optionally, the drive assembly includes a motor box installed on the horizontal panel of the L-shaped baffle, a rotating protrusion is connected to the motor box, a sliding groove is provided on the vertical panel of the L-shaped baffle, a slider is slidably installed on the sliding groove, a bracket is connected to the slider, a semi-circular arc plate is installed on the top of the bracket to abut the rotating protrusion, and a reset spring is installed on the slider.

[0010] By adopting the above technical solution, when the motor inside the motor box drives the rotating protrusion to rotate, the protrusion on the rotating protrusion can push the semi-circular plate to move vertically downward, thereby causing the bracket and the lifting box connected to the bracket to move downward. When the protrusion on the rotating protrusion cancels the contact with the semi-circular plate, the reset spring can drive the bracket to reset, thereby causing the lifting box to move back and forth vertically up and down.

[0011] Optionally, a filter box for filtering large particles of debris is installed on the treatment pool one, and a water leakage hole is opened between the filter box and the treatment pool one.

[0012] By adopting the above technical solution, the filter box can filter large particles of impurities directly outside.

[0013] Optionally, a circulation component is provided on the outer wall of treatment pool 1 and treatment pool 2, and the circulation component includes a liquid extraction pipe 1 connected to treatment pool 2, the liquid extraction pipe 1 is connected to a storage box, and the storage box is connected to a liquid extraction pipe 2 communicating with treatment pool 1.

[0014] By adopting the above technical solution, the treated wastewater can be subjected to secondary treatment through the circulation component when necessary, thereby enhancing the practicality of the device.

[0015] Optionally, the aeration assembly includes an aeration box, and the aeration box is connected to an aeration pipe located in the treatment tank.

[0016] By adopting the above technical solution, the aeration box can provide gas into the aeration pipe, and the aeration pipe can release the gas into the wastewater in the form of bubbles, increasing the oxygen content in the wastewater. At the same time, the rising process of the bubbles can drive the debris located in the middle and bottom of the wastewater to float upward, facilitating subsequent treatment and collection.

[0017] Optionally, a stirring assembly is installed on treatment pool 2, and the stirring assembly includes a support plate, on which motor 1 is installed, the output shaft of motor 1 is connected to a rotating plate, two motors 2 are symmetrically arranged on the rotating plate, and the output shafts of motor 2 are both provided with stirring shafts, and stirring blades are installed on the stirring shafts.

[0018] By adopting the above technical solution, motor one can drive the rotating plate, stirring shaft and stirring blades to rotate around the central axis of the output shaft of motor one, and motor two can drive the stirring shaft and stirring blades to rotate around the central axis of the output shaft of motor two. The chemical agent added to treatment tank two can accelerate mixing with wastewater and improve mixing efficiency.

[0019] Optionally, a handle is installed on the collection box.

[0020] By adopting the above technical solution, the handle makes it convenient for staff to take the collection box out of the lifting box.

[0021] Optionally, the vertical panels of the L-shaped baffle are distributed from front to back and tilted from left to right.

[0022] By adopting the above technical solution, the inclined setting of the vertical panel of the L-shaped baffle makes it easier to gather bubbles and debris.

[0023] In summary, compared with the prior art, the present invention has at least one of the following beneficial technical effects:

[0024] 1. By setting up the L-shaped baffle and the lifting box, the debris with bubbles can flow toward the L-shaped baffle along the direction of the water flow, and then flow toward the lifting box along the L-shaped baffle. The lifting box can drive the collection box to move vertically up and down. When the collection box is lower than the water surface, the water flow can flow along the cavity inside the collection box, and the wastewater can flow into the lifting box through the perforation. The drain valve can discharge the wastewater in time, and then the debris can remain in the collection box, realizing effective separation of debris and wastewater, preventing debris from being deposited in the wastewater again, and improving the working efficiency of wastewater treatment. Compared with the existing technology, it can reduce the probability of bubbles and debris being deposited in the water for the second time. Compared with the traditional technology, the device has a simple structure, is easy to operate, and reduces labor costs.

[0025] 2. Through the coordinated arrangement of the motor box, the rotating protrusion, the semicircular plate, the slider, the bracket and the reset spring, when the motor inside the motor box drives the rotating protrusion to rotate, the protrusion on the rotating protrusion can push the semicircular plate to move vertically downward, thereby causing the bracket and the lifting box connected to the bracket to move downward. When the protrusion on the rotating protrusion cancels the contact with the semicircular plate, the reset spring can drive the bracket to reset, thereby causing the lifting box to move back and forth vertically up and down. The structure is simple and the operation is convenient.

[0026] 3. Through the setting of the filter box, a leakage hole is opened between the filter box and the treatment pool. The filter box can filter large particles of impurities directly on the outside, thereby improving the efficiency of subsequent treatment.

[0027] 4. Through the setting of the circulation component, the treated wastewater can be subjected to secondary treatment through the circulation component when necessary, thereby enhancing the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic structural diagram of a printed circuit board production wastewater recovery device according to the present invention;

[0029] Figure 2 It is a structural schematic diagram of the circulation component of the present invention;

[0030] Figure 3 Schematic diagram of the structure of the partition plate, sieve plate and L-shaped baffle of the present invention;

[0031] Figure 4 This is a schematic structural diagram of the drive assembly, lifting box and collection box of the present invention;

[0032] Figure 5 Schematic diagram of the structure of the stirring assembly of the present invention.

[0033] Explanation of the accompanying symbols: 1. Wastewater tank; 11. Treatment tank 1; 12. Partition; 13. Treatment tank 2; 14. Sieve plate; 15. Filter box; 16. Leakage hole; 2. Collecting assembly; 21. L-shaped baffle; 22. Lifting box; 23. Drain valve; 24. Slot; 25. Collecting box; 26. Perforation; 27. Handle; 3. Driving assembly; 31. Motor box; 32. Rotating bump; 33. Slider; 34. Bracket; 35. Semicircular plate; 36. Return spring; 4. Aeration assembly; 41. Aeration box; 42. Aeration pipe; 5. Circulation assembly; 51. Extraction pipe 1; 52. Storage box; 53. Extraction pipe 2; 6. Stirring assembly; 61. Support plate; 62. Motor 1; 63. Motor 2; 64. Stirring shaft; 65. Stirring blade DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 5, clearly and completely describing the technical solutions of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments derived by ordinary technicians in this field fall within the scope of protection of the present invention.

[0035] Reference Figure 1-Figure 5 This embodiment provides a wastewater recycling device for printed circuit board production, comprising a wastewater tank 1, a collection assembly 2, a drive assembly 3, an aeration assembly 4, a circulation assembly 5, and a stirring assembly 6. The collection assembly 2 is used to collect debris encased in bubbles on the wastewater's horizontal surface. The drive assembly 3 is used to drive the collection assembly 2 to move vertically back and forth, lowering the collection assembly 2 below the horizontal surface to collect the debris. The aeration assembly 4 is used to inject gas into the wastewater, forming bubbles that encapsulate the debris and cause it to float on the water surface. The circulation assembly 5 performs a secondary filtration on the filtered wastewater. The stirring assembly 6 is used to agitate the filtered wastewater, mixing it with chemicals to change its pH or remove pollutants.

[0036] Reference Figure 1 and Figure 2 The wastewater tank 1 is provided with a treatment tank 11, a partition 12, a treatment tank 2 13, a sieve plate 14, and a filter box 15. The filter box 15 is provided with a leak hole 16. The interior of the wastewater tank 1 is provided with a partition 12, which divides the interior of the wastewater tank 1 into the treatment tank 1 11 and the treatment tank 2 13. The height of the partition 12 is lower than the top of the wastewater tank 1. The water level of the treatment tank 2 13 is lower than the water level of the treatment tank 1 11. Under the action of the partition 12, the water inside the treatment tank 1 11 flows into the treatment tank 2 13. The sieve plate 14 is installed in the treatment tank 1 11. The sieve plate 14 can prevent larger particles from entering the treatment tank 2 13. The sieve plate 14 is close to the partition 12 and the height of the sieve plate 14 is higher than the partition 12. The filter box 15 is installed on the outer wall of the treatment tank 1 11. A leak hole 16 is opened between the filter box 15 and the treatment tank 1 11. The wastewater first passes through the filter box 15 for simple filtration.

[0037] Reference Figure 3 and Figure 4The collection assembly 2 includes an L-shaped baffle 21, a lifting box 22, a drain valve 23, a slot 24, a collection box 25, a perforation 26, and a handle 27. The L-shaped baffle 21 is installed on top of the sieve plate 14, and the bottom of the vertical panel of the L-shaped baffle 21 extends into the bottom of the horizontal panel of the treatment tank 11. The vertical panel of the L-shaped baffle 21, the sieve plate 14, and the partition 12 are arranged in parallel. The vertical panels of the L-shaped baffle 21 are distributed from front to back and are tilted from left to right. Bubbles and debris can be collected vertically in the direction of the water flow and the vertical panel of the L-shaped baffle 21. Lifting box 22 slides vertically onto the vertical panel of L-shaped baffle 21. A drain valve 23 is mounted at the bottom of lifting box 22. Lifting box 22 is provided with a slot 24. A collection box 25 is secured within lifting box 22 via a retaining plate. Collection box 25 is provided with a perforation 26. When water accumulates in collection box 25, it drains into lifting box 22. The drain valve 23 on lifting box 22 allows wastewater to be discharged. A handle 27 is mounted on collection box 25 to facilitate removal and cleaning of debris.

[0038] Reference Figure 4 The drive assembly 3 includes a motor box 31, a rotating protrusion 32, a chute, a slider 33, a bracket 34, a semicircular plate 35 and a return spring 36. The motor box 31 is mounted on the horizontal panel of the L-shaped baffle 21. The rotating protrusion 32 is connected to the output shaft of the motor in the motor box 31. The rotating protrusion 32 is configured as a cylindrical block with an arc-shaped protrusion connected thereto. The chute is vertically opened on the vertical panel of the L-shaped baffle 21. The slider 33 is mounted in the chute. The bracket 34 is connected to the slider 33. A semicircular plate 35 is mounted on the top of the bracket 34. The semicircular plate 35 abuts against the rotating protrusion 32. A return spring 36 is mounted on the bottom of the slider 33. The two ends of the return spring 36 are respectively connected to the bottom of the slider 33 and the bottom of the chute. The return spring 36 can drive the slider 33, the bracket 34 and the semicircular plate 35 to move upward and return to their original positions.

[0039] Reference Figure 2 The aeration assembly 4 includes an aeration box 41 and an aeration pipe 42. The aeration box 41 is placed behind the wastewater tank 1, and the aeration pipe 42 is connected to the aeration box 41. The air outlet of the aeration pipe 42 is located at the bottom of the treatment tank 11, so that bubbles can easily wrap around the particulate debris at the bottom and middle of the wastewater.

[0040] Reference Figure 2 The circulation assembly 5 includes a liquid extraction pipe 51, a storage tank 52, and a liquid extraction pipe 53. The liquid extraction pipe 51 is connected to the treatment tank 13, and the liquid extraction pipe 53 is connected to the treatment tank 11. The storage tank 52 is arranged behind the wastewater tank 1. The liquid extraction pipe 51 is connected to the upper side wall of the storage tank 52, and the liquid extraction pipe 53 is connected to the lower side wall of the storage tank 52. The liquid extraction pipe 51 and the liquid extraction pipe 53 are both pumped to extract water. The circulation assembly 5 can perform a second filtration on the filtered water.

[0041] Reference Figure 5 The stirring assembly 6 includes a support plate 61, a motor 1 62, a motor 2 63, a stirring shaft 64, and a stirring blade 65. The support plate 61 is installed on the top of the treatment tank 2 13, the motor 1 62 is set on the support plate 61, and the rotating plate is connected to the output shaft of the motor 1 62. The rotating plate is set as a rectangular plate, and the motor 2 63 is set as two, symmetrically arranged on both sides of the rotating plate. The output shafts of the motor 2 63 are both provided with stirring shafts 64, and the stirring shafts 64 are installed with stirring blades 65. The motor 2 63 can drive the stirring shaft 64 and the stirring blade 65 to rotate around the output shaft of the motor 2 63, so that the water and chemicals in the treatment tank 2 13 are mixed. The motor 1 62 can drive the rotating plate to rotate, so that the rotating plate, the stirring shaft 64, and the stirring blade 65 rotate around the output shaft of the motor 1 62, further accelerating the mixing of the water and chemicals.

[0042] Working Principle: Wastewater first passes through filter box 15 to remove large particles of impurities. It then enters treatment tank 11 of wastewater tank 1. Aeration pipe 42 of aeration assembly 4 releases bubbles into the wastewater. As the bubbles rise, they envelop debris in the wastewater, causing it to float to the surface. When the water level inside treatment tank 11 rises above baffle 12, the water inside treatment tank 11 begins to flow toward treatment tank 2 13. The floating debris follows the direction of the water flow toward L-shaped baffle 21. Because the vertical panels of L-shaped baffle 21 are tilted, the debris accumulates along the vertical direction of the L-shaped baffle 21.

[0043] At this time, the motor inside the motor box 31 starts, driving the rotating protrusion 32 to rotate. The protrusion on the rotating protrusion 32 pushes the semi-circular plate 35 to move vertically downward. The downward movement of the semi-circular plate 35 drives the bracket 34 and the lifting box 22 connected to the bracket 34 to move downward. When the lifting box 22 is lower than the water surface, the debris with bubbles flows along the cavity inside the collection box 25, and the wastewater flows into the lifting box 22 through the perforation 26. Then the drain valve 23 discharges the wastewater, and the debris remains in the collection box 25. When the protrusion on the rotating protrusion 32 no longer abuts the semi-circular plate 35, the return spring 36 drives the slider 33, the bracket 34 and the semi-circular plate 35 to move upward and return to their original position, thereby driving the lifting box 22 to move upward, realizing the vertical up and down reciprocating movement of the lifting box 22, continuously collecting debris.

[0044] The stirring assembly 6 in the treatment tank 2 13 is started, and the motor 1 62 drives the rotating plate, the stirring shaft 64 and the stirring blade 65 to rotate around the central axis of the output shaft of the motor 1 62. The motor 2 63 drives the stirring shaft 64 and the stirring blade 65 to rotate around the central axis of the output shaft of the motor 2 63, so that the chemicals added to the treatment tank 2 13 and the wastewater are mixed faster, thereby improving the mixing efficiency.

[0045] If the treated wastewater needs to be subjected to secondary treatment, the liquid extraction pipe 1 51 of the circulation component 5 extracts the wastewater in the treatment tank 2 13 into the storage tank 52, and then extracts the wastewater back to the treatment tank 1 11 through the liquid extraction pipe 2 53 for secondary treatment, thereby enhancing the practicality of the device; if secondary treatment is not required, the water in the treatment tank 2 13 can be directly discharged.

[0046] Furthermore, it should be noted that, in the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0047] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A printed circuit board production wastewater recovery device, comprising a wastewater tank (1), a treatment tank (11), a partition (12), a treatment tank (13) and an aeration assembly (4), characterized in that: A sieve plate (14) is installed in the treatment pool (11) to prevent debris from flowing to the treatment pool (13). An L-shaped baffle (21) is provided on the sieve plate (14) for collecting bubbles and debris. The vertical panel of the L-shaped baffle (21), the sieve plate (14) and the partition (12) are arranged in parallel. The bottom of the vertical panel of the L-shaped baffle (21) extends into the bottom of the horizontal panel of the treatment pool (11). A driving assembly (3) is mounted on the L-shaped baffle (21), a lifting box (22) is mounted on the driving assembly (3) in a vertically slidable manner, a drain valve (23) is mounted on the bottom of the lifting box (22), a card slot (24) is provided on the lifting box (22), a collecting box (25) located inside the lifting box (22) is mounted on the card slot (24), and a through hole (26) is provided on the collecting box (25).

2. The wastewater recovery device according to claim 1, characterized in that: The driving assembly (3) comprises a motor box (31) mounted on a horizontal panel of an L-shaped baffle (21), a rotating protrusion (32) being connected to the motor box (31), a sliding groove being provided on a vertical panel of the L-shaped baffle (21), a slider (33) being slidably mounted on the sliding groove, a bracket (34) being connected to the slider (33), a semicircular plate (35) being mounted on the top of the bracket (34) and being in contact with the rotating protrusion (32), and a return spring (36) being mounted on the slider (33).

3. The wastewater recovery device according to claim 1, characterized in that: A filter box (15) for filtering large particles of debris is installed on the treatment pool (11), and a water leakage hole (16) is opened between the filter box (15) and the treatment pool (11).

4. The wastewater recovery device according to claim 3, characterized in that: A circulation assembly (5) is provided on the outer walls of the treatment pool 1 (11) and the treatment pool 2 (13). The circulation assembly (5) comprises a liquid extraction pipe 1 (51) connected to the treatment pool 2 (13). The liquid extraction pipe 1 (51) is connected to a storage box (52). The storage box (52) is connected to a liquid extraction pipe 2 (53) in communication with the treatment pool 1 (11).

5. The wastewater recovery device according to claim 1, characterized in that: The aeration assembly (4) includes an aeration box (41), and the aeration box (41) is connected to an aeration pipe (42) located in the treatment tank (11).

6. The wastewater recovery device according to claim 1, characterized in that: The treatment pool 2 (13) is provided with a stirring assembly (6), the stirring assembly (6) comprises a support plate (61), a motor 1 (62) is provided on the support plate (61), the output shaft of the motor 1 (62) is connected to a rotating plate, two motors 2 (63) are symmetrically arranged on the rotating plate, the output shafts of the motors 2 (63) are both provided with stirring shafts (64), and stirring blades (65) are provided on the stirring shafts (64).

7. The wastewater recovery device according to claim 1, characterized in that: A handle (27) is installed on the collection box (25).

8. The wastewater recovery device according to claim 1, characterized in that: The vertical panels of the L-shaped baffle (21) are distributed from front to back and are tilted from left to right.

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