Metal etching solution storage tank

Abstract

The utility model relates to metal etching liquid technical field discloses a kind of metal etching liquid storage tank, comprising: tank body, filter and visual pipe.Tank body, tank body has for injecting etching liquid import end and for discharging etching liquid export end.Filter, filter is installed in the export end of tank body, for intercepting the crystallization particle and pipeline debris in etching liquid due to storage generation.Visual pipe, visual pipe is set to the side of tank body along vertical direction, the upper end of visual pipe and the inside of tank body are communicated along the direction of import end, the lower end of visual pipe and the inside of tank body are communicated along the direction of export end.By installing filter in the export end of tank body, so that etching liquid can be intercepted crystallization particle and pipeline debris when discharging, to avoid impurity blockage subsequent etching equipment pipeline;By vertically setting visual pipe on the side of tank body, and its upper and lower end respectively with the inside of tank body import end, export end direction communication, form intercommunicator, can directly observe the real-time liquid level of etching liquid in tank.

Description

Technical Field

[0001] This utility model relates to the field of metal etching solution technology, specifically a metal etching solution storage tank. Background Technology

[0002] Metal etching solution storage tanks are used for the temporary storage and turnover of etching solutions in metal processing, and are key equipment to ensure the continuous operation of etching processes.

[0003] The outlet of existing storage tanks is mostly a straight-through pipe structure, with only simple valves controlling the on / off state. Impurities such as crystal particles and pipe corrosion debris can enter subsequent etching machines, transfer pumps, and other equipment with the liquid flow, easily causing nozzle blockage and pump jamming. In terms of liquid level observation, it mostly relies on manual estimation or an observation port on the top of the tank, requiring operators to open the cover to check. This is not only cumbersome but also causes volatile components (such as acidic gases) in the etching solution to escape, while increasing the risk of overflow due to misjudgment of the liquid level during injection.

[0004] Therefore, there is an urgent need for a metal etching solution storage tank to solve the above problems. Utility Model Content

[0005] Based on the above, the purpose of this utility model is to provide a metal etching solution storage tank to solve the problems in the use of metal etching solution storage tanks.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A metal etching solution storage tank, comprising: A tank having an inlet for injecting etching solution and an outlet for discharging etching solution; A filter is installed at the outlet end of the tank to intercept crystal particles and pipeline debris generated during the storage of the etching solution. A visual tube is provided vertically on the side of the tank body. The upper end of the visual tube is connected to the interior of the tank body and in the direction of the inlet end, and the lower end of the visual tube is connected to the interior of the tank body and in the direction of the outlet end.

[0007] As a preferred embodiment of a metal etching solution storage tank, it also includes a splash-proof sealing assembly disposed at the inlet end of the tank body. When the metal etching solution is injected into the tank body, the splash-proof sealing assembly is used to prevent splashing of the liquid due to excessive flow rate.

[0008] As a preferred embodiment of a metal etching solution storage tank, the splash-proof sealing assembly includes a plug and a flow-guiding funnel. The plug is detachably sealed to the inlet end of the tank body, and the flow-guiding funnel is disposed on the plug, with the outlet of the flow-guiding funnel communicating with the tank body.

[0009] As a preferred embodiment of a metal etching solution storage tank, the splash-proof sealing assembly further includes a protective cover that surrounds the outer periphery of the flow funnel and partially encloses the liquid inlet of the flow funnel.

[0010] As a preferred embodiment of a metal etching solution storage tank, a flow channel is provided between the flow funnel and the protective cover, and several overflow holes are provided on the side wall of the flow funnel. The flow channel, the overflow holes and the tank body are all interconnected.

[0011] As a preferred embodiment of a metal etching solution storage tank, the central axis of the tank body coincides with the central axis of the blocking component, while the central axis of the guide funnel is offset from the central axis of the blocking component.

[0012] As a preferred embodiment of a metal etching solution storage tank, the outlet end of the guide funnel extends into the inner wall of the blockage member, so that the etching solution flows into the interior of the tank along the inner wall of the blockage member.

[0013] As a preferred embodiment of a metal etching solution storage tank, the bottom surface of the inner wall of the tank is set as an inclined plane, and the inclined plane is inclined towards the outlet end.

[0014] The beneficial effects of this utility model are as follows: by installing a filter at the outlet end of the tank, the etching solution can be intercepted by crystal particles and pipeline debris when it is discharged, thereby avoiding impurities from clogging the pipelines of subsequent etching equipment and ensuring the continuity of the etching process; by vertically setting a visible tube on the side of the tank, with its upper and lower ends connected to the interior of the tank in the direction of the inlet and outlet ends respectively, forming a communicating vessel, the real-time liquid level of the etching solution in the tank can be directly observed, thereby avoiding overflow during injection or evacuation during discharge, reducing etching solution waste and equipment damage. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a metal etching solution storage tank in the first direction provided by this utility model; Figure 2 A schematic diagram of the overall structure of a metal etching solution storage tank in the second direction provided by this utility model; Figure 3 A cross-sectional view of a metal etching solution storage tank provided by this utility model; Figure 4 This is a partially enlarged schematic diagram of a metal etching solution storage tank provided by this utility model.

[0016] The following are the labeling elements in the figure: 1. Tank body; 2. Filter; 3. Visual inspection tube; 4. Splash-proof sealing assembly; 401. Blocking component; 402. Flow guiding funnel; 403. Protective cover; 5. Overflow hole; 6. Guide channel. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0018] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, the terms "first" and "second" are used merely for descriptive distinction and have no specific meaning.

[0022] In one embodiment of this utility model, such as Figure 1-4As shown, a metal etching solution storage tank is provided, comprising: a tank body 1, a filter 2, and a viewing tube 3. The tank body 1 has an inlet end for injecting the etching solution and an outlet end for discharging the etching solution. The filter 2 is installed at the outlet end of the tank body 1 to intercept crystalline particles and pipe debris generated during storage in the etching solution. The viewing tube 3 is vertically disposed on the side of the tank body 1, with its upper end connected to the interior of the tank body 1 along the direction of the inlet end, and its lower end connected to the interior of the tank body 1 along the direction of the outlet end.

[0023] The metal etching solution storage tank provided by this utility model has a filter 2 installed at the outlet end of the tank body 1, which can intercept crystal particles and pipeline debris when the etching solution is discharged, thereby preventing impurities from clogging the pipelines of subsequent etching equipment and ensuring the continuity of the etching process. A visual tube 3 is vertically installed on the side of the tank body 1, and its upper and lower ends are respectively connected to the interior of the tank body 1 in the direction of the inlet and outlet ends, forming a communicating vessel. The real-time liquid level of the etching solution in the tank can be directly observed, thereby avoiding overflow during injection or evacuation during discharge, reducing etching solution waste and equipment damage.

[0024] In this embodiment, a PE tank 1 can be used to store the metal etching solution. PE material (polyethylene) has excellent chemical corrosion resistance and can resist long-term erosion by acidic etching solutions (such as copper chloride etching solution containing hydrochloric acid) and alkaline etching solutions (such as etching solutions containing ammonia), preventing the tank 1 from being corroded and damaged, thus avoiding leakage of the etching solution and ensuring the sealing and safety of the storage process.

[0025] Preferred, such as Figure 4 As shown, the bottom surface of the inner wall of tank 1 is designed as an inclined plane, with the inclined direction tilting towards the outlet end. The inclined bottom surface can guide the etching solution to collect at the outlet end, reducing residual liquid at the bottom of the tank (especially when the etching solution contains crystalline particles, to avoid the formation of dead corners due to particle deposition in the residual liquid); at the same time, the inclined structure can reduce the liquid suction resistance at the outlet end, and together with filter 2, the etching solution in the tank can be discharged more thoroughly, reducing waste of the solution, and facilitating the diversion of wastewater to the outlet end during tank 1 cleaning, thus improving cleaning efficiency.

[0026] In this embodiment, the visible tube 3 is a transparent PVC tube. PVC material has the characteristic of being resistant to corrosion by metal etching solutions (such as acidic copper chloride etching solution and alkaline etching solution), which can be adapted to the long-term storage scenario of etching solution, prevent the visible tube 3 from being damaged by chemical corrosion, ensure the stability and service life of the liquid level monitoring function, and further improve the overall durability and practicality of the storage tank.

[0027] Preferably, the filter 2 is a basket filter 2, which is connected to the inside of the tank 1 through a connector to filter the etching solution and prevent blockage of the outlet end of the tank 1 when the etching solution is discharged.

[0028] Basket filter 2 is suitable for long-term storage of metal etching solutions (such as acidic copper chloride etching solution and acidic ferric chloride etching solution). During the storage of such etching solutions in PE tank 1, copper crystals and iron salt particles are easily precipitated due to temperature changes or compositional stability. When the etching solution is discharged from the outlet and transported to the etching machine (such as PCB board etching equipment), filter 2 can intercept the above impurities to avoid the impurities clogging the valve at the outlet of tank 1 or the subsequent delivery pipeline.

[0029] The metal etching solution storage tank, such as Figure 3 and Figure 4 As shown, it also includes a splash-proof sealing component 4, which is disposed at the inlet end of the tank 1. When the metal etching liquid is injected into the tank 1, the splash-proof sealing component 4 is used to prevent the liquid from splashing due to excessive flow rate.

[0030] When injecting etching solution into tank 1 through a pipeline, improper flow rate control (such as a sudden increase in pump pressure) or angle deviation during manual pouring can easily cause liquid to splash from the edge of the tank opening. The anti-splash sealing component 4 can directly prevent splashed etching solution from contacting operators, avoiding skin corrosion, and also prevent the solution from splashing onto the ground or equipment surface, causing corrosion damage or environmental pollution.

[0031] Preferably, the splash-proof sealing assembly 4 includes a plug 401 and a flow-guiding funnel 402. The plug 401 is detachably sealed to the inlet end of the tank 1, and the flow-guiding funnel 402 is disposed on the plug 401, with its outlet communicating with the tank 1. The sealing fit between the plug 401 and the tank opening reduces the escape of volatile components (such as hydrochloric acid and ammonia) from the etching solution, preventing contamination of the workshop environment.

[0032] Furthermore, the splash-proof sealing assembly 4 also includes a protective cover 403, which surrounds the outer periphery of the flow-guiding funnel 402 and partially covers the liquid inlet of the flow-guiding funnel 402. The protective cover 403 and the flow-guiding funnel 402 work together to form a partially enclosed space, effectively preventing splashing droplets caused by liquid flow rebound or impact from escaping, ensuring a safe and clean filling process, and preventing corrosive liquids from injuring people or polluting the environment.

[0033] Furthermore, a guide channel 6 is provided between the flow funnel and the protective cover 403, and several overflow holes 5 are provided on the side wall of the guide funnel 402. The guide channel 6, overflow holes 5, and tank body 1 are all interconnected. The top opening of the guide funnel 402 is used to receive the etching solution to be injected. When the etching solution splashes into the guide channel 6, it can be discharged into the tank body 1 through the overflow holes 5, ensuring that the etching solution will not overflow from the tank opening into the operating environment. Moreover, "splashed solution recovery" is realized, reducing the loss of etching solution caused by splashing. Especially when the etching solution contains precious metal ions, it can reduce raw material costs.

[0034] Preferably, the central axis of the tank body 1 coincides with the central axis of the plug 401, while the central axis of the guide funnel 402 is offset from the central axis of the plug 401. The guide funnel 402 extends into the inner wall of the plug 401, allowing the etching solution to flow along the inner wall of the plug 401 into the interior of the tank body 1.

[0035] The coaxiality of the plug 401 with the tank body 1 ensures uniform sealing of the tank opening, preventing local sealing failure due to eccentricity, and preventing volatile components in the etching solution (such as hydrochloric acid mist) from escaping from the sealing gap, or external impurities from falling into the tank and contaminating the solution. On the other hand, the offset axis of the guide funnel 402 can guide the injected etching solution to flow down the side wall of the tank body 1, and the guide funnel 402 extends into the inner wall of the plug 401, ensuring that the etching solution will flow down slowly along the side wall, avoiding liquid splashing and improving the safety of etching solution injection.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and modifications made to the above embodiments based on the present utility model without departing from the scope of the present utility model shall fall within the scope of the present utility model.

Claims

1. A metal etching solution storage tank, characterized in that, include: A tank having an inlet for injecting etching solution and an outlet for discharging etching solution; A filter is installed at the outlet end of the tank to intercept crystal particles and pipeline debris generated during the storage of the etching solution. A visual tube is provided vertically on the side of the tank body. The upper end of the visual tube is connected to the interior of the tank body and in the direction of the inlet end, and the lower end of the visual tube is connected to the interior of the tank body and in the direction of the outlet end.

2. A metal etching solution storage tank according to claim 1, characterized in that, It also includes a splash-proof sealing component, which is disposed at the inlet end of the tank. When the metal etching liquid is injected into the tank, the splash-proof sealing component is used to prevent the liquid from splashing due to excessive flow rate.

3. A metal etching solution storage tank according to claim 2, characterized in that, The splash-proof sealing assembly includes a plug and a flow guide funnel. The plug is detachably sealed to the inlet end of the tank. The flow guide funnel is disposed on the plug and its outlet is connected to the tank.

4. A metal etching solution storage tank according to claim 3, characterized in that, The splash-proof sealing assembly also includes a protective cover, which is disposed around the outer periphery of the flow guide funnel and partially surrounds and covers the liquid guide port of the flow guide funnel.

5. A metal etching solution storage tank according to claim 4, characterized in that, A flow channel is provided between the flow funnel and the protective cover. Several overflow holes are provided on the side wall of the flow funnel. The flow channel, the overflow holes and the tank are all interconnected.

6. A metal etching solution storage tank according to claim 5, characterized in that, The central axis of the tank body coincides with the central axis of the blocking component, while the central axis of the guide funnel is offset from the central axis of the blocking component.

7. A metal etching solution storage tank according to any one of claims 3-6, characterized in that, The outlet end of the flow guide funnel extends into the inner wall of the blockage component, allowing the etching solution to flow along the inner wall of the blockage component into the interior of the tank.

8. A metal etching solution storage tank according to claim 1 or 2, characterized in that, The bottom surface of the inner wall of the tank is set as an inclined plane, and the inclined plane is inclined towards the outlet end.

Images