A stirring structure for producing a circuit board cleaning agent

Abstract

This utility model relates to the field of cleaning agent production and processing technology, and in particular to a stirring structure for producing circuit board cleaning agents. It includes a tank and a stirring assembly. The stirring assembly includes stirring blades and a drive shaft. The stirring blades are distributed inside the tank, and the drive shaft is rotatably disposed in the middle of the inner side of the tank. The stirring blades are distributed on the drive shaft, which also has a defoaming assembly. The defoaming assembly includes a fixed defoaming net and a movable defoaming net. The fixed defoaming net is disposed between the stirring blades, and the movable defoaming net is independently and rotatably disposed on the top and bottom surfaces of the fixed defoaming net. When stirring is performed inside the tank, the drive shaft drives the fixed defoaming net and the stirring blades to rotate synchronously. When the fixed defoaming net rotates, because the movable defoaming net is independently and rotatably disposed on the top and bottom surfaces of the fixed defoaming net, a relative speed difference is formed between the movable and fixed defoaming nets, thereby achieving a shearing effect on the foam and defoaming.

Description

Technical Field

[0001] This utility model relates to the field of cleaning agent production and processing technology, and in particular to a stirring structure for producing circuit board cleaning agents. Background Technology

[0002] Circuit board cleaner, also known as PCB cleaner or flux cleaner, is a chemical preparation specifically designed to remove residual flux, solder paste, oil, dust, and ionic contaminants from the surface of printed circuit boards (PCBs) after soldering (such as wave soldering and reflow soldering). Its core function is to ensure the cleanliness of the PCB, thereby guaranteeing its long-term reliability and stability. If residues are not removed, they may lead to circuit corrosion, leakage, short circuits, and even circuit failures in extreme environments.

[0003] The production of cleaning agents is usually a physical mixing process that does not involve violent chemical reactions. Therefore, during the production process, stirring structures are used to mix and stir the materials, thereby achieving rapid and uniform mixing of various liquid, solid or paste raw materials into a homogeneous and stable system.

[0004] The existing stirring structure used in the production of circuit board cleaning agents generates a large amount of foam during the stirring process, which affects the quality of the cleaning agent. Therefore, a long period of settling and defoaming is required after stirring before the next step can be carried out, which reduces production efficiency. To address this issue, the inventors have proposed a stirring structure for the production of circuit board cleaning agents to solve the aforementioned technical problems. Utility Model Content

[0005] The purpose of this utility model is achieved through the following means: a stirring structure for producing circuit board cleaning agents, comprising a tank for loading the cleaning agent and a stirring assembly installed inside the tank. The stirring assembly includes stirring blades and a drive shaft. The stirring blades are distributed inside the tank. The drive shaft is rotatably disposed in the middle of the inside of the tank, and the drive shaft and the stirring blades are synchronously rotated together. The stirring blades are distributed axially at equal intervals in multiple layers on the drive shaft. Foam breaking components are evenly distributed at staggered positions on the drive shaft. The foam breaking components include a fixed defoaming net and a movable defoaming net. The fixed defoaming net is movably disposed between the stirring blades. Guide grooves are symmetrically arranged on the outer cylindrical surface of the drive shaft near the fixed defoaming net. The fixed defoaming net is connected to the drive shaft through the guide grooves and can slide axially along the guide grooves. The movable defoaming net is independently and rotatably disposed on the top and bottom surfaces of the fixed defoaming net.

[0006] In a further embodiment of the above description, the top surface of the tank is provided with an opening, and the outer cylindrical surface of the tank is provided with a connecting ridge near the opening. A sealing cap is placed over the opening, and the bottom edge of the sealing cap is provided with a sealing ridge near the connecting ridge. Both the sealing ridge and the connecting ridge have connecting holes for connection, and the connecting holes are aligned with each other. The sealing ridge and the connecting ridge are sealed together by locking bolts and locking nuts that match the connecting holes. The sealing cap is sealed to the top surface of the tank by locking bolts and locking nuts, preventing material from flying out of the tank during stirring and providing a sealing effect.

[0007] In a further embodiment of the above description, an output motor is concentrically mounted on the top surface of the sealing cover near the drive shaft. The output shaft of the output motor passes through the sealing cover and is synchronously connected to the drive shaft. A discharge port is provided on the top surface of the sealing cover near the drive shaft. The discharge port facilitates the pouring of materials into the tank by the operator. The output motor drives the drive shaft to rotate synchronously, which in turn drives the stirring blades and the fixed defoaming net to rotate.

[0008] In a further embodiment of the above description, the fixed defoaming net has a connecting ring in its middle. The inner surface of the connecting ring, near the guide groove, has a guide key that mates with the guide groove. The movable defoaming net has a movable ring in its middle, near the drive shaft, that is clearance-fitted with the drive shaft. Floating rings are located along the edges of both the fixed and movable defoaming nets near the inner wall of the tank. The inner surface of the floating rings is fixedly connected to the edges of both the fixed and movable defoaming nets. Fixed rods are located at both ends of the connecting ring and the movable ring. One end of the fixed rod is connected to the outer surface of the connecting ring and the movable ring, and the other end is fixedly connected to the inner surface of the floating ring. The fixed rings provide a connection between the fixed defoaming net and the drive shaft, allowing the fixed defoaming net and the floating ring to rotate synchronously when the drive shaft rotates. The clearance fit between the movable ring and the drive shaft prevents the movable ring and the movable defoaming net from rotating synchronously when the drive shaft rotates. This achieves the effect of shearing foam through the relative speed difference between the fixed and movable defoaming nets, thus achieving defoaming.

[0009] In a further embodiment of the above description, the top and bottom surfaces of the floating ring connected to the edge of the fixed defoaming net are provided with T-shaped ring rails, and the floating ring connected to the edge of the movable defoaming net has a T-shaped ring groove with clearance fit to the T-shaped ring rail at a position near the T-shaped ring rail; the T-shaped ring rail and the clearance fit T-shaped ring groove are used to provide a connection effect between the movable defoaming net and the fixed defoaming net.

[0010] In a further embodiment of the above description, the bottom surface of the tank is provided with a discharge valve, the top surface of which extends toward the inside of the tank. Support feet are distributed on all four circumferences of the bottom surface of the tank, and the top of the support feet is fixedly connected to the bottom surface of the tank. The discharge valve is used to pour the mixed material out of the tank.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting up a fixed defoaming net that rotates synchronously with the drive shaft and an independently rotating movable defoaming net, when stirring is carried out in the tank, the drive shaft will drive the fixed defoaming net and the stirring blade to rotate synchronously. When the fixed defoaming net rotates, since the movable defoaming net is independently rotatably set on the top and bottom surfaces of the fixed defoaming net, a relative speed difference will be formed between the movable defoaming net and the fixed defoaming net when the fixed defoaming net rotates, thereby achieving a shearing effect on the foam and achieving the purpose of defoaming. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of a stirring structure for producing a circuit board cleaning agent according to this utility model; Figure 2 This is a three-dimensional structural schematic diagram of a stirring structure for producing a circuit board cleaning agent according to this utility model from another perspective. Figure 3 This is a schematic diagram of the independent structure of the defoaming component in the stirring structure for producing a circuit board cleaning agent according to this utility model; Figure 4 This is an exploded structural diagram of the defoaming component in the stirring structure for producing a circuit board cleaning agent according to this utility model. Figure 5 This is a schematic diagram of the internal structure of a stirring structure for producing a circuit board cleaning agent according to this utility model; Figure 6 This is a schematic diagram of the internal structure of a stirring structure for producing a circuit board cleaning agent according to another perspective. Figure 7 This is a utility model Figure 5 A partially enlarged schematic diagram of structure A in the middle; In the diagram: 1-tank body, 2-stirring blade, 3-drive shaft, 4-fixed defoaming net, 5-movable defoaming net; 6-Guide slot, 7-Opening, 8-Connecting ridge, 9-Sealing cap, 10-Sealing ridge, 11-Connecting hole; 12-Locking bolt, 13-Locking nut, 14-Output motor, 15-Discharge port, 16-Connecting ring; 17-Guide key, 18-Moving ring, 19-Floating ring, 20-Fixed rod, 21-T-shaped ring rail; 22-T-shaped annular groove, 23-discharge valve, 24-support foot. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] For this embodiment, please refer to Figures 1-7 The present invention relates to a stirring structure for producing a circuit board cleaning agent, comprising a tank 1 for loading the cleaning agent and a stirring assembly installed inside the tank 1. The stirring assembly includes stirring blades 2 and a drive shaft 3. The stirring blades 2 are distributed inside the tank 1. The drive shaft 3 is rotatably disposed in the middle of the inside of the tank 1, and the drive shaft 3 and the stirring blades 2 are synchronously rotated. The stirring blades 2 are distributed axially at equal intervals in multiple layers on the drive shaft 3. The defoaming components are evenly distributed at staggered positions on the drive shaft 3. The defoaming components include a fixed defoaming net 4 and a movable defoaming net 5. The fixed defoaming net 4 is movably disposed between the stirring blades 2. The outer cylindrical surface of the drive shaft 3 is symmetrically provided with guide grooves 6 near the fixed defoaming net 4. The fixed defoaming net 4 is connected to the drive shaft 3 through the guide grooves 6, and the fixed defoaming net 4 can slide axially along the guide grooves 6. The movable defoaming net 5 is independently rotatably disposed on the top and bottom surfaces of the fixed defoaming net 4. Specifically, when the drive shaft 3 rotates, it synchronously drives the stirring blade 2 and the fixed defoaming net 4 to rotate, stirring and mixing the material in the tank 1. When the liquid level of the material in the tank 1 changes, the fixed defoaming net 4, under the action of the floating ring 19, will change with the liquid level of the material in the tank 1. At the same time, the fixed defoaming net 4 is distributed between the stirring blades 2, and can play the same defoaming role under different liquid levels.

[0015] The top surface of the tank body 1 is provided with an opening 7. The outer cylindrical surface of the tank body 1 is provided with a connecting protrusion 8 near the opening 7. A sealing cover 9 is covered on the opening 7. The bottom edge of the sealing cover 9 is provided with a sealing protrusion 10 near the connecting protrusion 8. Both the sealing protrusion 10 and the connecting protrusion 8 are provided with connecting holes 11 for connection. The connecting holes 11 are aligned with each other. The sealing protrusion 10 and the connecting protrusion 8 are sealed and connected by locking bolts 12 and locking nuts 13 that match the connecting holes 11.

[0016] An output motor 14 is provided at the center of the top surface of the sealing cover 9, near the drive shaft 3, and is concentric with the drive shaft 3. The output shaft of the output motor 14 passes through the sealing cover 9 and is synchronously connected to the drive shaft 3. A discharge port 15 is provided on the top surface of the sealing cover 9 near the drive shaft 3. Specifically, after the sealing cap 9 is placed on the opening 7, the connecting hole 11 on the connecting protrusion 8 is aligned with the connecting hole 11 on the sealing protrusion 10. Then, the locking bolt 12 is inserted into the aligned connecting hole 11, and the locking nut 13 is connected to the locking bolt 12 to achieve a sealed connection between the sealing cap 9 and the tank body 1.

[0017] The fixed defoaming net 4 has a connecting ring 16 in the middle. The inner circular surface of the connecting ring 16 is provided with a guide key 17 that cooperates with the guide slot 6. The movable defoaming net 5 has a movable ring 18 that is clearance-fitted with the drive shaft 3 in the middle. The fixed defoaming net 4 and the movable defoaming net 5 have floating rings 19 near the inner wall of the tank 1. The inner circular surface of the floating ring 19 is fixedly connected to the edge of the fixed defoaming net 4 and the movable defoaming net 5. Both ends of the connecting ring 16 and the movable ring 18 are provided with fixing rods 20. One end of the fixing rod 20 is connected to the outer circular surface of the connecting ring 16 and the movable ring 18, and the other end of the fixing rod 20 is fixedly connected to the inner circular surface of the floating ring 19. Specifically, through the cooperation between the guide key 17 and the guide slot 6 of the connecting ring 16, when the drive shaft 3 rotates, the guide slot 6 rotates synchronously. At the same time as the guide slot 6 rotates, under the cooperation between the guide key 17 and the guide slot 6, the fixed defoaming net 4 is driven to rotate synchronously.

[0018] The top and bottom surfaces of the floating ring 19 connected to the edge of the fixed defoaming net 4 are provided with T-shaped ring rails 21, and the floating ring 19 connected to the edge of the movable defoaming net 5 is provided with a T-shaped ring groove 22 that is clearance-fitted with the T-shaped ring rail 21 at a position close to the T-shaped ring rail 21. Specifically, when the fixed defoaming net 4 rotates, it drives the T-shaped ring rail 21 to rotate. Due to the clearance fit between the T-shaped ring groove 22 and the T-shaped ring rail 21, the movable defoaming net 5 can rotate independently when the T-shaped ring rail 21 rotates.

[0019] The bottom surface of the tank body 1 is provided with a discharge valve 23. The top surface of the discharge valve 23 extends towards the inside of the tank body 1 for conduction. Support feet 24 are distributed in all four circumferential directions on the bottom surface of the tank body 1. The top of the support feet 24 is fixedly connected to the bottom surface of the tank body 1.

[0020] The working process of this utility model is as follows: After the material is poured into the inside of the tank 1 through the discharge port 15, the water level inside the tank 1 rises. The fixed defoaming net 4 and the movable defoaming net 5 distributed in the upper, middle and lower sections of the inside of the tank 1 will always match the liquid level height of different sections through the floating ring 19. When the liquid level is in the upper section of the tank 1, the fixed defoaming net 4 and the movable defoaming net 5 in the upper section float on the liquid surface through the floating ring 19. The output motor 14 is turned on, and the output motor 14 drives the drive shaft 3, the stirring blade 2 and the guide slot 6 to rotate synchronously. While stirring and mixing the material, bubbles are generated. When the guide slot 6 rotates, it drives the fixed defoaming net 4 to rotate synchronously through the guide key 17 on the connecting ring 16 in the middle of the fixed defoaming net 4. As the material is poured into the tank 1 through the discharge port 15, the water level inside the tank 1 rises. The fixed defoaming nets 4 and movable defoaming nets 5, distributed in the upper, middle-upper, middle-lower, and lower sections of the tank 1, are constantly matched to the liquid level at different sections via the floating ring 19. When the liquid level is in the upper section of the tank 1, the fixed defoaming nets 4 and movable defoaming nets 5 in the upper section float on the liquid surface via the floating ring 19, ensuring that the bubbles generated by stirring are defoamed. When the drive shaft 3 rotates, it drives the fixed defoaming nets 4 to rotate synchronously. The rotation of the fixed defoaming nets 4 will... The movable T-shaped ring rail 21 rotates synchronously. Due to the clearance fit between the T-shaped ring groove 22 and the T-shaped ring rail 21, the side of the T-shaped ring groove 22 will contact the side of the T-shaped ring rail 21 during rotation. Through this contact surface, torque is transmitted, thereby driving the movable defoaming net 5 to start rotating together with the fixed defoaming net 5. However, due to the clearance fit, the rotation speed of the movable defoaming net 5 will decrease, resulting in a slower rotation speed than the fixed defoaming net 4. This creates a relative speed difference between the movable defoaming net 5 and the fixed defoaming net 4, thereby achieving a shearing effect on the foam and achieving the purpose of defoaming.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0022] Furthermore, in the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of 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. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] Finally, it should be noted that the above embodiments are merely specific implementations of this utility model, used to illustrate the technical solution of this utility model, and not to limit it. The protection scope of this utility model is not limited thereto. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features, within the technical scope disclosed in this utility model. These modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A stirring structure for producing a circuit board cleaning agent, comprising a tank for loading the cleaning agent and a stirring assembly installed inside the tank, characterized in that: The stirring assembly includes stirring blades and a drive shaft. The stirring blades are distributed inside the tank. The drive shaft is rotatably located in the middle of the tank's inner side, and the drive shaft and stirring blades are synchronously rotated together. The stirring blades are distributed axially at equal intervals in multiple layers on the drive shaft. Defoaming components are evenly distributed on the drive shaft at staggered positions from the stirring blades. The defoaming components include a fixed defoaming net and a movable defoaming net. The fixed defoaming net is movable up and down between the stirring blades. Guide grooves are symmetrically arranged on the outer cylindrical surface of the drive shaft near the fixed defoaming net. The fixed defoaming net is connected to the drive shaft through the guide grooves and can slide axially along the guide grooves. The movable defoaming net is independently and rotatably located on the top and bottom surfaces of the fixed defoaming net.

2. A stirring structure for production of a circuit board cleaner according to claim 1, characterized in that: The top surface of the tank is provided with an opening, and the outer cylindrical surface of the tank is provided with a connecting protrusion near the opening. A sealing cover is placed on the opening, and a sealing protrusion is provided on the bottom edge of the sealing cover near the connecting protrusion. Both the sealing protrusion and the connecting protrusion have connecting holes for connection. The connecting holes are aligned with each other, and the sealing protrusion and the connecting protrusion are sealed and connected by locking bolts and locking nuts that match the connecting holes.

3. A stirring structure for production of a circuit board cleaner according to claim 2, characterized in that: An output motor is located concentrically with the drive shaft at the center of the top surface of the sealing cover. The output shaft of the output motor passes through the sealing cover and is connected to the drive shaft for synchronous rotation. A discharge port is provided on the top surface of the sealing cover near the drive shaft.

4. The stirring structure for production of a circuit board cleaner according to claim 1, characterized in that: The fixed defoaming net has a connecting ring in the middle. The inner surface of the connecting ring near the guide groove has a guide key that matches the guide groove. The movable defoaming net has a movable ring in the middle near the drive shaft that is clearance-fitted with the drive shaft. The fixed and movable defoaming nets have floating rings near the inner wall of the tank. The inner surface of the floating ring is fixedly connected to the edge of the fixed and movable defoaming nets. Both ends of the connecting ring and the movable ring have fixing rods. One end of the fixing rod is connected to the outer surface of the connecting ring and the movable ring, and the other end of the fixing rod is fixedly connected to the inner surface of the floating ring.

5. A stirring structure for production of a circuit board cleaner according to claim 4, characterized in that: The top and bottom surfaces of the floating ring connected to the edge of the fixed defoaming net are both provided with T-shaped ring rails, and the floating ring connected to the edge of the movable defoaming net has a T-shaped ring groove with clearance fit to the T-shaped ring rail at a position near the T-shaped ring rail.

6. A stirring structure for production of a circuit board cleaner according to claim 1, characterized in that: The bottom surface of the tank is equipped with a discharge valve, the top surface of which extends towards the inside of the tank. Support feet are distributed on all four circumferences of the bottom surface of the tank, and the top of the support feet is fixedly connected to the bottom surface of the tank.

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