Staggered condensation air draft system of circuit board cleaning section

Abstract

The utility model discloses a staggered condensation air draft system for a circuit board cleaning section, which comprises a cleaning cavity, two groups of exhaust pipelines and a fan, the air inlet ends of the exhaust pipelines are connected with the cleaning cavity, and the air inlet ends and the air outlet ends of the exhaust pipelines are respectively positioned at the corresponding positions of the two ends of the cleaning cavity. According to the cleaning device, air is exhausted outwards through the fan, so that negative pressure is generated in the exhaust pipeline, and mist generated due to temperature rise in the cleaning cavity is exhausted out. Due to the fact that the transportation distance of the whole equipment of the cleaning machine is generally long, when mist enters the exhaust pipeline along with negative pressure in the exhaust pipeline, due to the fact that the temperature in the exhaust pipeline is low and the length of the exhaust pipeline is long, the mist can make contact with the side wall of the exhaust pipeline or cold air to conduct sufficient heat exchange. Therefore, cleaning liquid medicine in the mist is condensed and separated out and flows back into the cleaning cavity, recycling of the cleaning liquid medicine is achieved, the utilization rate of the cleaning liquid medicine is increased, and consumption of the liquid medicine is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automated production equipment, in particular to an interleaved condensation and exhaust system for a circuit board cleaning section. Background Art

[0002] In the production and processing of circuit boards, it is necessary to clean the circuit boards by using a cleaning liquid medicine to remove the residual soldering flux on the circuit boards and avoid the influence of the excess soldering flux on the subsequent production and processing of the circuit boards. In the existing circuit board cleaning equipment, since heating is required during the cleaning process, water mist mixed with the transpired cleaning liquid medicine will be generated. Generally, the cleaning equipment discharges the water mist through an exhaust pipe and guides it to a recycling and treatment system for unified recycling, and then condenses the water mist to extract the liquid medicine therein, and then adds the recycled liquid medicine back to the cleaning equipment to clean the circuit boards. This method requires re-injecting the liquid medicine into the cleaning equipment, which is cumbersome in operation and requires manual monitoring, and additional manpower needs to be invested for corresponding operations, which is not convenient for improving the overall processing efficiency in the production process and is not conducive to controlling the overall production cost.

[0003] Therefore, there are defects in the prior art and improvement is needed. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an interleaved condensation and exhaust system for a circuit board cleaning section.

[0005] The technical solution of the utility model is as follows: Provide an interleaved condensation and exhaust system for a circuit board cleaning section, including: a cleaning chamber, two groups of exhaust pipes arranged on the cleaning chamber, and a fan respectively connected to the air outlet ends of the exhaust pipes, the air inlet ends of the exhaust pipes are connected to the cleaning chamber, and the air inlet ends and the air outlet ends of the exhaust pipes are respectively located at corresponding positions at both ends of the cleaning chamber.

[0006] Further, the directions of the air inlet ends and the air outlet ends of the two groups of exhaust pipes are opposite.

[0007] Further, a condensation coil is arranged in the exhaust pipe.

[0008] Further, the cold water inlet and the cold water outlet of the condensation coil penetrate through the side wall of the exhaust pipe.

[0009] Further, the bottom wall of the exhaust pipe inclines towards the air inlet end of the exhaust pipe.

[0010] With the above solution, the utility model extracts air outward through a fan, creating a negative pressure in the exhaust pipe to extract the mist generated due to temperature rise in the cleaning chamber. Since the overall equipment of the cleaning machine generally has a long transportation distance, when the mist enters the exhaust pipe along with the negative pressure in the exhaust pipe 2, due to the relatively low temperature inside the exhaust pipe 2 and the long length of the exhaust pipe 2, the mist will come into contact with the side wall of the exhaust pipe 2 or cold air for sufficient heat exchange, causing the cleaning liquid medicine in the mist to condense and precipitate and flow back into the cleaning chamber 1, thus realizing the recycling of the cleaning liquid medicine, improving the utilization rate of the cleaning liquid medicine, and reducing the consumption of the liquid medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic structural diagram of the utility model.

[0012] Figure 2 is a schematic internal structural diagram of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The following will describe the utility model in detail with reference to the accompanying drawings and specific embodiments.

[0014] Please refer to Figure 1 , the utility model provides an interleaved condensation air extraction system for a circuit board cleaning section, including: a cleaning chamber 1, two groups of exhaust pipes 2 arranged on the cleaning chamber 1, and a fan respectively connected to the air outlet ends 22 of the exhaust pipes 2. The air inlet end 21 of the exhaust pipe 2 is connected to the cleaning chamber 1, and the air inlet end 21 and the air outlet end 22 of the exhaust pipe 2 are respectively located at corresponding positions at both ends of the cleaning chamber 1.

[0015] When cleaning a product in the cleaning chamber 1 of the cleaning machine, the fan is started to extract air outward, creating a negative pressure in the exhaust pipe to extract the mist generated due to temperature rise in the cleaning chamber 1. Since the overall equipment of the cleaning machine generally has a long transportation distance, when the mist enters the exhaust pipe 2 along with the negative pressure in the exhaust pipe 2, due to the relatively low temperature inside the exhaust pipe 2 and the long length of the exhaust pipe 2, the mist will come into contact with the side wall of the exhaust pipe 2 or cold air for sufficient heat exchange, causing the cleaning liquid medicine in the mist to condense and precipitate and flow back into the cleaning chamber 1, thus realizing the recycling of the cleaning liquid medicine, improving the utilization rate of the cleaning liquid medicine, and reducing the consumption of the liquid medicine.

[0016] The intake ends 21 and the outlet ends 22 of the two groups of the exhaust ducts 2 are in opposite directions. The intake end 21 of one group of exhaust ducts 2 is arranged near the inlet end of the cleaning chamber 1, and the outlet end 22 is arranged near the outlet end of the cleaning chamber 1; the intake end 21 of the other group of exhaust ducts 2 is arranged near the outlet end of the cleaning chamber 1, and the outlet end 22 is arranged near the inlet end of the cleaning chamber 1. Since the overall length of the exhaust duct 2 is relatively long, and in order to ensure that the cleaning liquid medicine in the mist can be fully condensed and separated out, the suction force provided by the fan should not be too large. Therefore, for the mist at the end of the cleaning chamber 1 that is far from the intake end 21 of the exhaust duct 2, due to the long distance, it is difficult to suck the mist on this side. Therefore, the air at both ends of the cleaning chamber 1 is sucked by the two groups of exhaust ducts 2 with opposite directions, so as to ensure that the mist in the cleaning chamber 1 can be fully and effectively sucked, meet the requirement of condensing and recycling the liquid medicine in the mist, and avoid the situation that the suction effect of the mist at one end is poor and affects the condensation and recycling.

[0017] Please refer to Figure 2 , in some embodiments, a condensation coil 3 is arranged in the exhaust duct 2. When the mist moves in the exhaust duct 2, by fully contacting with the relatively low-temperature condensation water coil 3, the cleaning agent in the mist is condensed and separated out, the efficiency of condensation and separation is improved, and thus the utilization rate of the cleaning liquid medicine is greatly improved.

[0018] The cold water inlet 31 and the cold water outlet 32 of the condensation coil 3 penetrate through the side wall of the exhaust pipe 2, which is convenient for circulating the cold water in the condensation coil 3. Through the circulating flow of the cooling water, the mist entering the exhaust duct 2 can be continuously and effectively condensed. The cooling water that has undergone heat exchange and is output from the cold water outlet 32 will be transported to the chiller, the coolant is cooled by the chiller, and then transported to the condensation coil 3 through the cold water inlet 31, so as to achieve the effect of circulating cooling.

[0019] In some embodiments, the bottom wall of the exhaust duct 2 inclines towards the intake end 21 of the exhaust duct 2, so as to guide the cleaning liquid medicine in the condensed mist back to the cleaning chamber 1, thereby recycling the cleaning liquid medicine and improving the utilization rate of the cleaning liquid medicine.

[0020] In summary, the utility model sucks air outwards through a fan, generating negative pressure in the exhaust pipe to extract the mist generated due to temperature rise in the cleaning chamber. Since the overall equipment of the cleaning machine generally has a long transportation distance, when the mist enters the exhaust pipe along with the negative pressure in the exhaust pipe, due to the relatively low temperature in the exhaust pipe and the long length of the exhaust pipe, the mist will contact the side wall of the exhaust pipe or cold air to conduct sufficient heat exchange, so that the cleaning liquid medicine in the mist condenses and precipitates and flows back into the cleaning chamber, thereby realizing the recycling of the cleaning liquid medicine, improving the utilization rate of the cleaning liquid medicine and reducing the consumption of the liquid medicine.

[0021] The above are only the preferred embodiments of the utility model and are not intended to limit the utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the utility model shall be included within the protection scope of the utility model.

Claims

1. A staggered condensation exhaust system for a circuit board cleaning section, characterized in that: include: A cleaning chamber, two sets of exhaust pipes arranged on the cleaning chamber, and fans respectively connected to the exhaust pipes' outlet ends, the exhaust pipes' inlet ends are connected to the cleaning chamber, and the exhaust pipes' inlet ends and outlet ends are respectively located at corresponding positions at both ends of the cleaning chamber.

2. The staggered condensation exhaust system for the circuit board cleaning section according to claim 1 is characterized in that: The air inlet ends and the air outlet ends of the two groups of exhaust pipes are in opposite directions.

3. The staggered condensation exhaust system for the circuit board cleaning section according to claim 1 is characterized in that: A condensing coil is arranged in the exhaust duct.

4. The staggered condensation exhaust system for the circuit board cleaning section according to claim 3 is characterized in that: The cold water inlet and the cold water outlet of the condensing coil pass through the side wall of the filling and exhaust pipe.

5. The staggered condensation exhaust system for the circuit board cleaning section according to claim 1 is characterized in that: The bottom wall of the exhaust pipe is inclined toward the air inlet end of the exhaust pipe.

Images