Adjustable air exhaust mechanism for PCB acid cycle etching

Abstract

The utility model discloses an adjustable air exhaust mechanism for PCB acid cycle etching, relates to the technical field of air exhaust mechanisms, and aims to solve the problems that in the prior art, in the etching liquid recovery process, the exhaust gas extraction speed is inconvenient to adjust according to requirements, and the practicability is poor. A first partition plate and a second partition plate are fixedly installed in the equipment box, a center cavity is formed in the middle between the first partition plate and the second partition plate, side cavities are symmetrically formed in the upper portion and the lower portion between the first partition plate and the second partition plate respectively, the center cavity and the side cavities are separated through baffles, a main fan is arranged in the center cavity, and a fan is arranged in the main fan. A center cavity is formed in the middle of the equipment box, a side cavity is formed in the middle of the equipment box, an auxiliary fan is arranged in the side cavity, output pipes are fixedly installed on one side of the first partition plate and penetrate out of the equipment box, the number of the output pipes is three, the three output pipes communicate with the center cavity and the side cavity correspondingly, and a first layer plate and a second layer plate are fixedly installed between the second partition plate and the equipment box.

Description

Technical Field

[0001] The utility model relates to the technical field of air extraction mechanisms, in particular to an adjustable air extraction mechanism for PCB acid cycle etching. Background Art

[0002] Chemical etching process is an essential and important step in the current manufacturing process of printed circuit boards. In the production process of printed circuit boards, acid etching process is usually used to produce circuit boards. In order to improve the utilization of resources, the acid etching solution will be regenerated so that it can be used for PCB acid cycle etching. Waste gas will be generated during the regeneration process of the acid etching solution, and the waste gas needs to be extracted and treated;

[0003] For example, the authorized patent with announcement number CN204738026U (a printed circuit board acid etching liquid waste gas absorption device): including a cylinder body, a jet absorption mechanism and a heating mechanism, the cylinder body includes two oppositely arranged first side plates and second side plates, and two oppositely arranged third side plates and fourth side plates, the cylinder body includes a balancing cylinder, a collecting cylinder, a jet cylinder, a heating cylinder, a adding cylinder and a circulating cylinder in sequence from the fourth side plate to the third side plate along the direction of the first side plate and the second side plate, the jet cylinder is arranged opposite to the heating cylinder, the jet absorption mechanism is installed at the rear end position of the jet cylinder, and the heating mechanism is accommodated in the heating cylinder;

[0004] Although the above-mentioned prior art is convenient for automatic heating temperature control and online circulation regeneration of etching liquid, it does not have the ability to adjust the exhaust mechanism. Therefore, in the process of etching liquid recovery, it is not convenient to adjust the exhaust gas extraction speed according to demand, and the practicality is poor. Therefore, the market urgently needs to develop an adjustable exhaust mechanism for PCB acid cycle etching to help people solve the existing problems. Utility Model Content

[0005] The utility model aims to provide an adjustable exhaust mechanism for PCB acid cycle etching, so as to solve the problem of poor practicality in that it is inconvenient to adjust the exhaust gas extraction speed according to demand during the etching liquid recovery process proposed in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an adjustable exhaust mechanism for PCB acid cycle etching, comprising an equipment box, wherein partition one and partition two are fixedly installed inside the equipment box, a central cavity is arranged in the middle between partition one and partition two, side cavities are symmetrically arranged above and below the partition one and partition two, the central cavity and the side cavity are blocked by a baffle, a main fan is arranged inside the central cavity, an auxiliary fan is arranged inside the side cavity, an output pipe is fixedly installed on one side of the partition one, and the output pipe passes through the interior of the equipment box, three output pipes are arranged, and the three output pipes are respectively connected to the central cavity and the side cavity.

[0007] Preferably, layer 1 and layer 2 are fixedly installed between partition 2 and the equipment box, and vents are provided inside layer 1 and layer 2. Partition 2 and the equipment box are separated by layer 1 and layer 2 to form a main air cavity and an auxiliary air cavity, and the main air cavity is connected to the central cavity, and two auxiliary air cavities are provided, which are symmetrically arranged above and below the main air cavity, and the auxiliary air cavity is connected to the side cavity.

[0008] Preferably, a folding plate is provided inside the auxiliary air chamber, an electric cylinder is fixedly mounted on one side of the equipment box, and a push rod end of the electric cylinder extends into the auxiliary air chamber and is fixedly connected to the folding plate.

[0009] Preferably, a delivery pipe is fixedly installed on one side of the equipment box, a collecting head is fixedly installed below the delivery pipe, a main pipeline is fixedly installed below the collecting head, and an exhaust hood is provided below the main pipeline.

[0010] Preferably, the exhaust hood includes a central shell and side covers, two side covers are provided, and the two side covers are symmetrically arranged on both sides of the central shell, and a secondary pipe is fixedly installed on the outer side of the side cover, and the secondary pipe is fixedly connected to the collecting head.

[0011] Preferably, a strip hole is provided on the upper end surface of the side cover, a hand wheel is provided above the side cover, a fixing screw is fixedly installed below the hand wheel, the fixing screw passes through the strip hole and is threadedly connected to the center shell, and a pressing plate is fixedly installed on the outer side of the fixing screw along the top of the side cover.

[0012] Preferably, a guide groove is provided on the inner side of the side cover, a slider is provided inside the guide groove, and the slider is fixedly connected to the center shell by screws.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The utility model provides an equipment box, in which a main fan and an auxiliary fan are respectively provided in the central cavity and the side cavity inside the equipment box. During the etching liquid recovery process, the start-up of the main fan and the auxiliary fan can be adjusted according to the amount of waste gas generated by the etching liquid recovery. When the amount of waste gas is small, negative pressure extraction can be performed by starting the main fan. When the amount of waste gas is large, the main fan and the auxiliary fan can be started at the same time to increase the negative pressure extraction capacity, which is conducive to the stable and rapid discharge of the waste gas, realizes the adjustable capacity of the exhaust mechanism, and increases practicality.

[0015] 2. The utility model can seal and block the main air chamber and the auxiliary air chamber by means of the folding plate, and the folding plate can be driven to move by the electric cylinder to facilitate the connection between the main air chamber and the auxiliary air chamber, which is beneficial to the adjustment of the exhaust gas extraction process and increases practicality.

[0016] 3. The utility model is provided with an exhaust hood, wherein the exhaust hood includes a central shell and a side hood. When the waste gas generated by the recovery of the etching liquid is extracted, the exhaust hood can be installed above the etching liquid, which is conducive to the generated waste gas to flow directly into the exhaust hood to facilitate the extraction and output of the waste gas, and the side hood can slide relative to the central shell, so that the size of the exhaust hood can be adjusted, which increases the flexibility of the use of the exhaust hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of an adjustable exhaust mechanism for PCB acid cycle etching according to the utility model;

[0018] Figure 2 It is a cross-sectional view of the exhaust hood of the utility model;

[0019] Figure 3 It is a side cross-sectional view of the center shell and the side cover of the utility model;

[0020] Figure 4 It is a cross-sectional view of the equipment box of the utility model.

[0021] In the figure: 1. Equipment box; 101. Center cavity; 102. Side cavity; 103. Main air cavity; 104. Auxiliary air cavity; 2. Output pipe; 3. Delivery pipe; 4. Collection head; 5. Main pipeline; 6. Auxiliary pipeline; 7. Exhaust hood; 8. Center shell; 9. Side cover; 901. Strip hole; 902. Guide groove; 10. Fixing screw; 11. Pressing plate; 12. Hand wheel; 13. Slider; 14. Partition one; 15. Partition two; 16. Main fan; 17. Auxiliary fan; 18. Shelf one; 19. Shelf two; 20. Folding plate; 21. Electric cylinder. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] See also Figure 1-4The utility model provides an embodiment: an adjustable exhaust mechanism for PCB acid cycle etching, comprising an equipment box 1, wherein a partition 14 and a partition 2 15 are fixedly installed inside the equipment box 1, a central cavity 101 is arranged in the middle between the partition 14 and the partition 2 15, side cavities 102 are symmetrically arranged above and below the partition 14 and the partition 2 15, the central cavity 101 and the side cavity 102 are blocked by a baffle, a main fan 16 is arranged inside the central cavity 101, an auxiliary fan 17 is arranged inside the side cavity 102, an output pipe 2 is fixedly installed on one side of the partition 14, and the output pipe 2 passes through the interior of the equipment box 1, three output pipes 2 are arranged, and the three output pipes 2 are respectively connected to the central cavity 101 and the side cavity 102.

[0024] When in use, when the etching liquid is recovered and regenerated, by starting the main fan 16, the waste gas generated in the process of etching liquid recovery and regeneration can be extracted under negative pressure, and then the waste gas is discharged through the output pipe 2 for treatment. At the same time, the auxiliary fan 17 can be started to increase the negative pressure extraction capacity of the waste gas, realize the adjustment of the waste gas extraction capacity, and facilitate the stable and rapid extraction of the waste gas when a large amount of waste gas is generated, thereby increasing practicality.

[0025] Furthermore, a layer plate 18 and a layer plate 2 19 are fixedly installed between the partition plate 2 15 and the equipment box 1, and ventilation holes are arranged inside the layer plates 18 and 19. The partition plate 2 15 and the equipment box 1 are separated by the layer plates 18 and 19 to form a main air cavity 103 and an auxiliary air cavity 104. The main air cavity 103 is connected to the central cavity 101, and two auxiliary air cavities 104 are arranged. The two auxiliary air cavities 104 are symmetrically arranged above and below the main air cavity 103, and the auxiliary air cavity 104 is connected to the side cavity 104. 102 is connected, and a folding plate 20 is provided inside the auxiliary air chamber 104. The folding plate 20 blocks the vents to separate the main air chamber 103 and the auxiliary air chamber 104. An electric cylinder 21 is fixedly installed on one side of the equipment box 1. The push rod end of the electric cylinder 21 extends into the interior of the auxiliary air chamber 104 and is fixedly connected to the folding plate 20. The folding plate 20 is driven by the electric cylinder 21 to move to connect or close the main air chamber 103 and the auxiliary air chamber 104, which is beneficial to the adjustment of the exhaust gas extraction process and increases practicality.

[0026] Furthermore, a delivery pipe 3 is fixedly installed on one side of the equipment box 1, a collecting head 4 is fixedly installed below the delivery pipe 3, a main pipe 5 is fixedly installed below the collecting head 4, and an exhaust hood 7 is arranged below the main pipe 5. The exhaust hood 7 is arranged to facilitate negative pressure extraction of exhaust gas. The exhaust hood 7 includes a central shell 8 and a side cover 9. Two side covers 9 are arranged, and the two side covers 9 are symmetrically arranged on both sides of the central shell 8. A secondary pipe 6 is fixedly installed on the outer side of the side cover 9, and the secondary pipe 6 is fixedly connected to the collecting head 4. The arrangement of the secondary pipe 6 increases the number of exhaust ports in the exhaust hood 7, which is beneficial to the extraction of exhaust gas and increases practicality.

[0027] Furthermore, a strip hole 901 is provided on the upper end surface of the side cover 9, a hand wheel 12 is provided above the side cover 9, a fixing screw 10 is fixedly installed below the hand wheel 12, the fixing screw 10 passes through the strip hole 901 and is threadedly connected to the center shell 8, and a pressing plate 11 is fixedly installed on the outer side of the fixing screw 10 along the top of the side cover 9. After the side cover 9 is moved and adjusted, the fixing screw 10 is tightened to press the pressing plate 11 against the side cover 9, so that the position of the side cover 9 can be fixed.

[0028] Furthermore, a guide groove 902 is provided on the inner side of the side cover 9, a slider 13 is provided inside the guide groove 902, and the slider 13 is fixedly connected to the center shell 8 by screws. The setting of the slider 13 and the guide groove 902 increases the stability of the side cover 9 sliding on the center shell 8.

[0029] Working principle: When in use, when the etching liquid is recovered and regenerated, the exhaust hood 7 is installed inside the etching liquid recovery and regeneration equipment and is above the etching liquid, and then the main fan 16 is started, and the air in the exhaust hood 7 is extracted through the conveying pipe 3, so that the exhaust hood 7 can negatively pressure extract the waste gas generated in the process of etching liquid recovery and regeneration, and then the waste gas is discharged through the output pipe 2 for treatment. At the same time, the auxiliary fan 17 can be started to increase the negative pressure extraction capacity of the waste gas, realize the adjustment of the waste gas extraction capacity, facilitate the stable and rapid extraction of the waste gas when more waste gas is generated, and increase practicality.

[0030] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An adjustable exhaust mechanism for PCB acid cycle etching, comprising an equipment box (1), characterized in that: A partition plate 1 (14) and a partition plate 2 (15) are fixedly installed inside the equipment box (1); a central cavity (101) is arranged in the middle between the partition plate 1 (14) and the partition plate 2 (15); side cavities (102) are symmetrically arranged above and below the partition plate 1 (14) and the partition plate 2 (15); the central cavity (101) and the side cavity (102) are blocked by a baffle; a main fan (16) is arranged inside the central cavity (101); an auxiliary fan (17) is arranged inside the side cavity (102); an output pipe (2) is fixedly installed on one side of the partition plate 1 (14), and the output pipe (2) passes through the interior of the equipment box (1); three output pipes (2) are arranged, and the three output pipes (2) are respectively connected to the central cavity (101) and the side cavity (102).

2. The adjustable exhaust mechanism for PCB acid cycle etching according to claim 1, characterized in that: Layer 1 (18) and layer 2 (19) are fixedly installed between the partition 2 (15) and the equipment box (1), and ventilation holes are arranged inside the layer 1 (18) and the layer 2 (19). The partition 2 (15) and the equipment box (1) are separated by layer 1 (18) and layer 2 (19) to form a main air cavity (103) and an auxiliary air cavity (104), and the main air cavity (103) is connected to the central cavity (101), and two auxiliary air cavities (104) are arranged, and the two auxiliary air cavities (104) are symmetrically arranged above and below the main air cavity (103), respectively, and the auxiliary air cavity (104) is connected to the side cavity (102).

3. The adjustable exhaust mechanism for PCB acid cycle etching according to claim 2, characterized in that: A folding plate (20) is provided inside the auxiliary air chamber (104), an electric cylinder (21) is fixedly mounted on one side of the equipment box (1), and a push rod end of the electric cylinder (21) extends into the auxiliary air chamber (104) and is fixedly connected to the folding plate (20).

4. The adjustable exhaust mechanism for PCB acid cycle etching according to claim 1, characterized in that: A delivery pipe (3) is fixedly mounted on one side of the equipment box (1), a collecting head (4) is fixedly mounted below the delivery pipe (3), a main pipeline (5) is fixedly mounted below the collecting head (4), and an exhaust hood (7) is arranged below the main pipeline (5).

5. The adjustable exhaust mechanism for PCB acid cycle etching according to claim 4, characterized in that: The exhaust hood (7) comprises a central shell (8) and a side hood (9), wherein two side hoods (9) are provided, and the two side hoods (9) are symmetrically arranged on both sides of the central shell (8), and a secondary pipe (6) is fixedly installed on the outer side of the side hood (9), and the secondary pipe (6) is fixedly connected to the collecting head (4).

6. The adjustable air extraction mechanism for PCB acid cycle etching according to claim 5, characterized in that: A strip hole (901) is provided on the upper end surface of the side cover (9), a hand wheel (12) is provided above the side cover (9), a fixing screw (10) is fixedly installed below the hand wheel (12), the fixing screw (10) passes through the strip hole (901) and is threadedly connected to the center shell (8), and a pressing plate (11) is fixedly installed on the outer side of the fixing screw (10) along the top of the side cover (9).

7. The adjustable air extraction mechanism for PCB acid cycle etching according to claim 6, characterized in that: A guide groove (902) is provided on the inner side of the side cover (9), a slider (13) is provided inside the guide groove (902), and the slider (13) is fixedly connected to the center shell (8) by screws.

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