Liquid inlet device for etching machine

Abstract

The utility model discloses a liquid inlet device for an etching machine, which relates to the field of etching machines and comprises a storage tank, an input device is fixedly mounted at the top of the storage tank, and an output pipe is fixedly mounted at the bottom of the side wall of the storage tank; a liquid inlet pipe is vertically arranged in the storage tank, the upper end of the liquid inlet pipe is fixedly connected with the input device, a floating liquid inlet plate is fixedly arranged at the lower end of the liquid inlet pipe, a liquid inlet cavity is formed in the floating liquid inlet plate, and a plurality of evenly-distributed liquid inlet holes are formed in the lower surface of the floating liquid inlet plate. The liquid inlet structure provided by the utility model can rise along with the rise of the liquid level of the etching liquid, so that the high impact force of the etching liquid entering the storage tank is reduced, the etching liquid can be stored gently, the solubility of chlorine is stably ensured, and the stability of the etching effect of the etching liquid is ensured.

Description

Technical Field

[0001] The utility model relates to the field of etching machines, in particular to a liquid inlet device for etching machines. Background Art

[0002] Acid etching is an essential and key process in the production of printed circuit boards. Acid etching of circuit boards will produce a large amount of acid etching waste liquid. For the recovery of metallic copper in the acid etching waste liquid, electrolysis is generally used. When the electrolysis method is used to recover copper, a large amount of strong oxidizing gas chlorine will be produced at the anode, most of which will be reused in the etching process. Since the solubility of chlorine is not large, the regenerated etching solution produced by the dissolution of chlorine will maintain an unstable state of gas-liquid mixing. During the etching process of the circuit board, the solubility of chlorine in the etching solution often has a greater impact on the etching effect of the etching solution.

[0003] The etching liquid inlet method of the existing etching machine is often to directly inject the regeneration liquid into the etching liquid storage device after the preparation. Since there is a height difference when the etching liquid is stored inside the device, the etching liquid is in an unstable gas-liquid mixed state when it falls, so the solubility of chlorine gas cannot be guaranteed to be relatively stable, resulting in the etching effect of the etching liquid during use deviating from expectations.

[0004] Therefore, a liquid inlet device for an etching machine is proposed. Utility Model Content

[0005] In view of the problems existing in the above-mentioned liquid inlet device for the existing etching machine, the utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a liquid inlet device for an etching machine, which solves the problems raised by the background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A liquid inlet device for an etching machine comprises a storage tank, an input device is fixedly installed on the top of the storage tank, and an output pipe is fixedly installed on the bottom of the side wall of the storage tank; a liquid inlet pipe is vertically arranged inside the storage tank, the upper end of the liquid inlet pipe is fixedly connected to the input device, and a floating liquid inlet plate is fixedly arranged at the lower end of the liquid inlet pipe, a liquid inlet cavity is arranged inside the floating liquid inlet plate, and a plurality of evenly distributed liquid inlet holes are opened on the lower surface of the floating liquid inlet plate.

[0009] Preferably, the input device is an ejector.

[0010] Preferably, one end of the output pipe away from the storage tank is connected to the spray structure of the etching machine through a pump body.

[0011] Preferably, the liquid inlet pipe is a telescopic bellows.

[0012] Furthermore, the floating liquid inlet plate is a PE floating plate.

[0013] Preferably, a transparent observation window is provided on the outer side wall of the storage tank in the vertical direction.

[0014] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0015] 1. The utility model provides a liquid inlet pipe and a floating liquid inlet plate. The etching liquid enters the interior of the liquid inlet pipe through the input device, smoothly enters the floating liquid inlet plate along the liquid inlet pipe, and finally smoothly enters the bottom of the storage tank through the liquid inlet cavity and the liquid inlet hole. As the liquid level of the etching liquid gradually rises, the floating liquid inlet plate will also gradually rise with the liquid level. Here, the impact force of the etching liquid falling into the storage tank is reduced, so that the etching liquid can be stored smoothly, so that the solubility of chlorine gas is stably guaranteed, thereby ensuring the stability of the etching effect of the etching liquid.

[0016] 2. The utility model adopts a telescopic bellows through the liquid inlet pipe. As the liquid level of the etching liquid drives the floating liquid inlet plate to gradually rise, the liquid inlet pipe can automatically shrink at this time, reducing the path for the etching liquid to flow downward, so that the etching liquid can be stored smoothly.

[0017] 3. In the utility model, by setting a transparent observation window on the outer wall of the storage tank, during the continuous storage of the etching liquid, the storage amount of the etching liquid inside can be observed manually through the transparent observation window. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 For the utility model Figure 1 A cross-sectional view of

[0021] Figure 3 For the utility model Figure 2 Cross-sectional view of the floating inlet plate.

[0022] Description of reference numerals:

[0023] 1. Storage tank; 2. Input device; 3. Output pipe; 4. Liquid inlet pipe; 5. Floating liquid inlet plate; 6. Liquid inlet cavity; 7. Liquid inlet hole; 8. Transparent observation window. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model embodiment discloses a liquid inlet device for an etching machine.

[0026] The utility model provides Figure 1-2 A liquid inlet device for an etching machine is shown, comprising a storage tank 1, an input device 2 is fixedly installed on the top of the storage tank 1, the input device 2 adopts an ejector, an output pipe 3 is fixedly installed on the bottom of the side wall of the storage tank 1, and the end of the output pipe 3 away from the storage tank 1 is connected to the spray structure of the etching machine through a pump body. The ejector can inject etching liquid into the interior of the storage tube 1, and then discharge it through the output pipe 3 for use by the etching machine, so that the etching machine can etch the circuit board.

[0027] In order to enable the etching solution to smoothly enter the interior of the storage tank 1, Figure 1-3 As shown, a liquid inlet pipe 4 is vertically arranged inside the storage tank 1. The liquid inlet pipe 4 adopts a telescopic bellows. The telescopic bellows can make the length of the liquid inlet pipe 4 freely extend and retract. The upper end of the liquid inlet pipe 4 is fixedly connected to the input device 2, and a floating liquid inlet plate 5 is fixedly arranged at the lower end of the liquid inlet pipe 4. The floating liquid inlet plate 5 adopts a PE floating plate. The PE material is light, so that the buoyancy of the floating liquid inlet plate 5 is enhanced. A liquid inlet cavity 6 is arranged inside the floating liquid inlet plate 5, and a plurality of evenly distributed liquid inlet holes 7 are opened on the lower surface of the floating liquid inlet plate 5. The etching liquid enters the interior of the liquid inlet pipe 4 through the input device 2, smoothly enters the floating liquid inlet plate 5 along the liquid inlet pipe 4, and finally smoothly enters the bottom of the storage tank 1 through the liquid inlet cavity 6 and the liquid inlet holes 7. As the liquid level of the etching liquid gradually rises, the floating liquid inlet plate 5 will also gradually rise with the liquid level. Here, the high impact force of the etching liquid falling into the storage tank 1 is reduced, so that the etching liquid can be stored smoothly, so that the solubility of chlorine gas is stably guaranteed, thereby ensuring the stability of the etching effect of the etching liquid.

[0028] Finally, in order to know the storage volume inside the storage tank 1, Figure 1 As shown, a transparent observation window 8 is provided on the outer side wall of the storage tank 1 along the vertical direction. During the continuous storage of the etching liquid, the storage amount of the etching liquid inside can be observed manually through the transparent observation window 8 .

[0029] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A liquid inlet device for an etching machine, comprising a storage tank (1), characterized in that: An input device (2) is fixedly mounted on the top of the storage tank (1), and an output pipe (3) is fixedly mounted on the bottom of the side wall of the storage tank (1); A liquid inlet pipe (4) is vertically arranged inside the storage tank (1), the upper end of the liquid inlet pipe (4) is fixedly connected to the input device (2), and a floating liquid inlet plate (5) is fixedly arranged at the lower end of the liquid inlet pipe (4), a liquid inlet cavity (6) is arranged inside the floating liquid inlet plate (5), and a plurality of evenly distributed liquid inlet holes (7) are opened on the lower surface of the floating liquid inlet plate (5).

2. The liquid inlet device for an etching machine according to claim 1, characterized in that: The input device (2) is an ejector.

3. The liquid inlet device for an etching machine according to claim 1, characterized in that: One end of the output pipe (3) away from the storage tank (1) is connected to the spray structure of the etching machine through a pump body.

4. The liquid inlet device for an etching machine according to claim 1, characterized in that: The liquid inlet pipe (4) is a telescopic bellows.

5. The liquid inlet device for an etching machine according to claim 1, characterized in that: The floating liquid inlet plate (5) is a PE floating plate.

6. The liquid inlet device for an etching machine according to claim 1, characterized in that: The outer side wall of the storage tank (1) is provided with a transparent observation window (8) along the vertical direction.

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