Anti-backflow device for etching line pipeline
By installing a removable outer pipe and filter assembly on the etched line pipe, the problems of chemical backflow and clogging are solved, achieving the effects of simplified cleaning and prevention of backflow.
Patent Information
- Application Number
- CN202520320546.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-26
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-02-26
AI Technical Summary
In existing technologies, the chemical discharge pipes after etching lines are used are prone to backflow and blockage, resulting in time-consuming and labor-intensive cleaning.
A backflow prevention device for etched line pipes was designed, including an outer pipe body and a filter assembly. The outer pipe body is detachably connected to a parallel pipe and is equipped with a one-way valve and a filter screen to prevent backflow of the chemical solution and filter copper slag.
It simplifies the pipeline cleaning process, avoids the dismantling of the entire pipeline, reduces time and labor costs, and effectively prevents backflow of chemicals and copper slag buildup.
Smart Images
Figure CN223928549U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to PCB board processing technical field especially is related to a kind of etching line pipeline anti-backflow device. BACKGROUND
[0002] In printed circuit board (PCB) or semiconductor chip manufacturing, etching line refers to the wire or pattern formed by the process of removing the surface of a specific area of material by chemical or physical methods. For example: PCB manufacturing: cover the photoresist on the copper-clad plate, form a protective layer by exposure and development, then use etching solution (such as acidic solution) to dissolve the unprotected copper layer, leaving the circuit wire (i.e. "etching line"). Semiconductor chip: form nanoscale circuit structure on silicon wafer by photolithography and etching process, etching line width directly affects chip performance.
[0003] The etching line needs to be discharged after use, but the discharge pipeline is installed horizontally on the equipment, and the whole pipeline is straight, which can easily cause backflow of the discharged etching solution, and there are a lot of copper residues in the etching solution, the original pipeline is straight, which can also be easily blocked, and the whole pipeline needs to be removed for cleaning, which is very time-consuming and labor-intensive. SUMMARY
[0004] Therefore, the purpose of the utility model is to provide an etching line pipeline anti-backflow device to solve the technical problem of existing technology that the horizontal installation of the etching solution discharge pipeline can easily cause copper residues to accumulate when discharging etching solution for a long time, and the whole pipeline needs to be removed for cleaning, which is time-consuming and labor-intensive.
[0005] To achieve the above purpose, the utility model provides an etching line pipeline anti-backflow device, which comprises an external pipe body, the external pipe body is arranged on a parallel pipeline, one end is arranged as a water inlet end, the other end is arranged as a water outlet end, and both ends are detachably connected with the parallel pipeline, the external pipe body is provided with an etching solution discharge port, and the external pipe body is provided with a filter assembly for filtering etching solution.
[0006] Optionally, the external pipe body comprises a main pipe body and a secondary pipe body, the water inlet end and the water outlet end are arranged on the main pipe body, and the secondary pipe body is arranged on the main pipe body.
[0007] Optionally, the radius of the main pipe body is greater than the radius of the secondary pipe body.
[0008] Optionally, the main pipe body and the secondary pipe body are in Y-shaped structure.
[0009] Optionally, the filter assembly is arranged in the lumen of the secondary pipe body or the lumen of the main pipe body.
[0010] Optionally, when the filter assembly is arranged in the lumen of the secondary pipe body, the filter assembly is arranged as a plurality of layers of filter screens through which the medicine solution is discharged outward from the secondary pipe body.
[0011] Optionally, the primary pipe body is provided with a one-way valve.
[0012] Optionally, the one-way valve comprises a movable flap and a blocking block, the movable flap is rotatably arranged in the lumen of the primary pipe body and is arranged to rotate along the water flow direction of the primary pipe body to open and close the lumen of the primary pipe body, and the blocking block is arranged on the inner wall of the lumen of the primary pipe body to limit the rotation angle of the movable flap.
[0013] Optionally, the one-way valve further comprises a resilient member arranged on the rotation shaft of the movable flap.
[0014] Optionally, the inner wall of the primary pipe body is further provided with a foreign matter blocking area such as copper slag, and the foreign matter blocking area is located between the water outlet end and the secondary pipe body.
[0015] The etching line pipeline anti-backflow device provided by the utility model has the following technical effects:
[0016] The etching line pipeline anti-backflow device is arranged on the parallel pipeline, and comprises an external pipe body, one end of the external pipe body is arranged as a water inlet end, the other end is arranged as a water outlet end, and the water inlet end and the water outlet end are detachably connected with the parallel pipeline, that is, when a large amount of foreign matters such as copper slag are retained in the parallel pipeline, the external pipe body only needs to be detached from the parallel pipeline, instead of detaching the entire parallel pipeline, so that the defect of time-consuming and labor-consuming caused by detaching the entire pipeline is avoided, and daily maintenance is simplified.
[0017] The external pipe body is provided with a filter assembly and a medicine solution discharge port, and the medicine solution can be discharged outward through the medicine solution discharge port after being filtered by the filter assembly, so that the backflow of the medicine solution is avoided. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to these drawings without creating labor.
[0019] Figure 1 It is a structure schematic view of a preferred embodiment of the etching line pipeline anti-backflow device of the utility model;
[0020] Figure 2 It isFigure 1 The enlarged structure schematic view of the anti-backflow device of the etching line pipe at A;
[0021] Figure 3 is Figure 1 The structure schematic view of another preferred embodiment of the anti-backflow device of the etching line pipe.
[0022] wherein, Figures 1-3 :
[0023] 1, external pipe body; 11, main pipe body; 111, water inlet end; 112, water outlet end; 113, copper slag and other foreign matter blocking area; 12, secondary pipe body; 121, filter screen;
[0024] 2, one-way valve; 21, movable flap; 22, blocking block. DETAILED DESCRIPTION
[0025] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope protected by the utility model.
[0026] Based on the defects recorded in the prior art, the specific drawings will be combined below Figures 1-3 The etching line pipe anti-backflow device of the utility model will be described in detail.
[0027] The etching line pipe anti-backflow device provided by the utility model comprises an external pipe body 1, the external pipe body 1 is used for being installed on parallel pipes, one end is arranged as a water inlet end 111, the other end is arranged as a water outlet end 112, and the water inlet end 111 and the water outlet end 112 are simultaneously detachably connected with the parallel pipes, that is, the parallel pipes in the prior art are divided into two sections, the external pipe body 1 is installed between the two sections of parallel pipes, and the etching line after use The medicinal liquid flows through the external pipe body 1.
[0028] When there are more copper slag and other foreign matters remaining in the parallel pipes, the parallel pipes do not need to be removed as a whole, only the external pipe body 1 needs to be removed from the parallel pipes, which avoids the defect of time-consuming and laborious caused by removing the whole pipe.
[0029] For example, Figure 1 and Figure 3As shown, the outer connecting pipe body 1 comprises a main pipe body 11 and a secondary pipe body 12, the radius of the main pipe body 11 is larger than that of the secondary pipe body 12, a water inlet end 111 and a water outlet end 112 are arranged on the main pipe body 11, and the secondary pipe body 12 is arranged on the main pipe body 11, that is, the secondary pipe body 12 is bifurcated relative to the main pipe body 11, and the main pipe body 11 and the secondary pipe body 12 preferably form a Y-shaped structure, and more preferably form an integrally formed Y-shaped structure.
[0030] The drug water discharge port is located at the end of the secondary pipe body 12, and the drug water after use of the etching line can be discharged outward through the drug water discharge port of the secondary pipe body 12.
[0031] Since the main pipe body 11 is in the same horizontal line as the parallel pipeline, and the secondary pipe body 12 is below the main pipe body 11,
[0032] Therefore, the drug water after use of the etching line flows to the drug water discharge port of the secondary pipe body 12 due to the action of gravity, and is discharged outward through the drug water discharge port, so that backflow of the drug water after use of the etching line can be avoided.
[0033] In order to filter the copper residues in the drug water after use of the etching line, a filtering assembly for filtering the drug water is arranged in the pipe cavity of the outer connecting pipe body 1, wherein the filtering assembly can be arranged in the pipe cavity of the main pipe body 11 or in the pipe cavity of the secondary pipe body 12.
[0034] When the filtering assembly is arranged in the secondary pipe body 12, the filtering assembly is a plurality of layers of filtering screens 121, the drug water is discharged outward from the secondary pipe body 12 through the filtering screens 121, and the foreign matters such as copper residues can be blocked at the inlet end of the secondary pipe body 12.
[0035] The filtering screens 121 of the present embodiment can be one layer, two layers or multiple layers, and can be arranged at the middle position of the secondary pipe body 12 or at the two end positions of the secondary pipe body 12, and the number of layers and the position of the filtering screens 121 are not limited in the present utility model, as long as the purpose of filtering the drug water after use of the etching line can be achieved, which is within the protection scope of the present utility model.
[0036] In order to further prevent the phenomenon of backflow of the drug water after use of the etching line, as shown in the drawings, Figures 1-3 A one-way valve 2 is arranged in the main pipe body 11.
[0037] Specifically, as shown in the drawings, Figure 2 The one-way valve 2 comprises a movable flap 21 and a blocking block 22, the movable flap 21 is rotatably arranged in the pipe cavity of the main pipe body 11 and is arranged in the water flow direction of the main pipe body 11, and is used for opening and closing the pipe cavity of the main pipe body 11, and the blocking block 22 is arranged on the inner wall of the pipe cavity of the main pipe body 11 and is used for limiting the rotation angle of the movable flap 21.
[0038] Specific process is: when the main body 11 is full of etching line used after the drug, the pressure of the drug drives the movable flap 21 to rotate, the movable flap 21 rotates along the flow direction of the drug, at this time, the drug flows along the water outlet end 112 direction of the main body 11, when the movable flap 21 rotates to a certain angle, because the existence of the blocking block 22 on the inner wall of the lumen of the main body 11, the blocking block 22 generates the blocking action to the movable flap 21, causes the movable flap 21 to not continue to rotate, in turn avoids the backflow phenomenon of the drug after etching line is used.
[0039] In addition, the one-way valve 2 further includes a resilient member, the resilient member is arranged on the rotating shaft of the movable flap 21, when the main body 11 is empty of the drug, the resilient member can drive the movable flap 21 to rotate to the initial position, realizes the one-way flow of the drug in the main body 11 next time.
[0040] As a preferred embodiment of the utility model, Figure 1 And Figure 3 As shown in the utility model, the inner wall of the main body 11 is further provided with copper slag and other foreign matter blocking area 113, and the copper slag and other foreign matter blocking area 113 is located between the water outlet end 112 and the secondary pipe body 12.
[0041] The copper slag and other foreign matter blocking area 113 of the embodiment is located on the bottom wall of the main body 11, and is zigzag, which can block the copper slag and other foreign matter to the water outlet end 112 of the main body 11.
[0042] The utility model will be explained in detail in combination with specific embodiments.
[0043] Embodiment one
[0044] The embodiment provides a kind of etching line pipeline anti-backflow device, as shown in the utility model, Figure 1 It includes external pipe body 1, external pipe body 1 is used to install on parallel pipeline, one end is set as water inlet end 111, the other end is set as water outlet end 112, and water inlet end 111 and water outlet end 112 are simultaneously detachable with parallel pipeline Connection.
[0045] As shown in the utility model, Figure 1 External pipe body 1 includes main body 11 and secondary pipe body 12, the radius of main body 11 is greater than the radius of secondary pipe body 12, water inlet end 111 and water outlet end 112 are located on main body 11, and secondary pipe body 12 is arranged on main body 11, i.e. secondary pipe body 12 is integrally formed Y-shaped structure relative to main body 11.
[0046] Drug discharge port is located at the end of secondary pipe body 12, and the drug after etching line is used can be discharged outward through the drug discharge port of secondary pipe body 12.
[0047] The embodiment includes a filter screen 121 at the inlet end of the secondary pipe body 12. The filter screen 121 allows the etching solution to flow out of the secondary pipe body 12, while foreign matter such as copper residue is trapped at the inlet end of the secondary pipe body 12.
[0048] To further prevent the etching solution from flowing back after use of the etching line, a one-way valve 2 is provided in the main pipe body 11, as shown in Figure 1 and Figure 2
[0049] Specifically, as shown in Figure 2 , the one-way valve 2 includes a movable flap 21 and a blocking block 22. The movable flap 21 is rotatably arranged in the lumen of the main pipe body 11 and is arranged to rotate along the direction of the water flow of the main pipe body 11 to open and close the lumen of the main pipe body 11. The blocking block 22 is arranged on the inner wall of the lumen of the main pipe body 11 to limit the rotation angle of the movable flap 21.
[0050] The specific process is as follows: when the main pipe body 11 is filled with etching solution after use of the etching line, the pressure of the etching solution drives the movable flap 21 to rotate. The movable flap 21 rotates along the direction of the flow of the etching solution. At this time, the etching solution flows along the direction of the water outlet end 112 of the main pipe body 11. When the movable flap 21 rotates to a certain angle, the blocking block 22 on the inner wall of the lumen of the main pipe body 11 blocks the movable flap 21, preventing the movable flap 21 from continuing to rotate, thereby preventing the etching solution from flowing back after use of the etching line.
[0051] In addition, the one-way valve 2 also includes a resilient member arranged on the rotating shaft of the movable flap 21. When there is no etching solution in the main pipe body 11, the resilient member drives the movable flap 21 to rotate to the starting position, realizing the one-way flow of the etching solution in the main pipe body 11 for the next time.
[0052] As shown in Figure 1 , the inner wall of the main pipe body 11 of the embodiment also has a foreign matter blocking area 113 for copper residue and the like. The foreign matter blocking area 113 is located between the water outlet end 112 and the secondary pipe body 12.
[0053] The foreign matter blocking area 113 of the embodiment is located on the bottom wall of the main pipe body 11 and is sawtooth-shaped, which can block the movement of copper residue and other foreign matter to the water outlet end 112 of the main pipe body 11.
[0054] Embodiment Two
[0055] The embodiment provides a backflow prevention device for an etching line pipe, as shown in Figure 3 As shown, including the outer tube 1, the outer tube 1 is used for mounting on parallel pipeline, one end is set as water inlet end 111, the other end is set as water outlet end 112, and the water inlet end 111 and the water outlet end 112 are detachably connected with the parallel pipeline, that is, the parallel pipeline in the prior art is divided into two sections, the outer tube 1 is mounted between the two sections of the parallel pipeline, and the etching line is used after the drug solution flows through the outer tube 1.
[0056] As shown in the figure, Figure 3 The outer tube 1 includes a main tube 11 and a secondary tube 12, the radius of the main tube 11 is greater than the radius of the secondary tube 12, the water inlet end 111 and the water outlet end 112 are arranged on the main tube 11, and the secondary tube 12 is arranged on the main tube 11, that is, the secondary tube 12 forms a Y-shaped structure integrally formed with the main tube 11.
[0057] The drug solution discharge port is located at the end of the secondary tube 12, and the drug solution after use of the etching line can be discharged outward through the drug solution discharge port of the secondary tube 12.
[0058] The embodiment is a filter screen 121, and the drug solution is discharged outward from the secondary tube 12 through the filter screen 121, and the copper slag and other foreign matters can be clamped at the inlet end of the secondary tube 12.
[0059] As shown in the figure, Figure 3 The embodiment of the main tube 11 further comprises a copper slag and other foreign matter blocking area 113 on the inner wall of the main tube 11, and the copper slag and other foreign matter blocking area 113 is located between the water outlet end 112 and the secondary tube 12.
[0060] The copper slag and other foreign matter blocking area 113 of the embodiment is located on the bottom wall of the main tube 11 and is in a zigzag shape, which can block the copper slag and other foreign matters from moving to the water outlet end 112 of the main tube 11.
[0061] In the description of the utility model, it should be explained that, unless otherwise specified, the meaning of "a plurality of" is two or more than two; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship shown in the drawing, which is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a specific orientation, structure and operation, therefore, it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.
[0062] In the description of the utility model, still need to explain, unless another explicit provision and limitation, term " install " " link " " connection " should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or integrally connected;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium.
[0063] The above merely illustrates the specific embodiments of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A backflow prevention device for etched line pipes, characterized in that, It includes an outer pipe body, which is installed on a parallel pipe, with one end as the water inlet and the other end as the water outlet, and both ends are detachably connected to the parallel pipe. The outer pipe body is provided with a medicine discharge port, and the outer pipe body is provided with a filter component for filtering the medicine.
2. The anti-backflow device for etched line pipes according to claim 1, characterized in that, The external pipe body includes a main pipe and a secondary pipe. The water inlet and the water outlet are located on the main pipe, and the secondary pipe is located on the main pipe.
3. The anti-backflow device for etched line pipes according to claim 2, characterized in that, The radius of the main tube is greater than the radius of the secondary tube.
4. The anti-backflow device for etched line pipes according to claim 2, characterized in that, The main tube and the secondary tube have a Y-shaped structure.
5. The anti-backflow device for etched line pipes according to claim 2, characterized in that, The filter assembly is disposed in the cavity of the secondary tube or the cavity of the main tube.
6. The anti-backflow device for etched line pipes according to claim 5, characterized in that, When the filter assembly is located in the cavity of the secondary tube, the filter assembly consists of several layers of filter screens, and the medicine is discharged from the secondary tube through the filter screens.
7. The anti-backflow device for etched line pipes according to any one of claims 2-6, characterized in that, The main body is equipped with a one-way valve.
8. The anti-backflow device for etched line pipes according to claim 7, characterized in that, The one-way valve includes a movable flap and a blocking block. The movable flap is rotatably disposed in the cavity of the main pipe and is rotatably disposed in the direction of water flow in the main pipe, for opening and closing the cavity of the main pipe. The blocking block is disposed on the inner wall of the cavity of the main pipe, for limiting the rotation angle of the movable flap.
9. The anti-backflow device for etched line pipes according to claim 8, characterized in that, The one-way valve also includes a spring-loaded component, which is located on the rotating shaft of the movable flap.
10. The anti-backflow device for etched line pipes according to any one of claims 2-6, characterized in that, The inner wall of the main pipe is also provided with a foreign matter blocking area such as copper slag, which is located between the water outlet and the secondary pipe.