Heat exchanger for rinsing section of circuit board
By using steam pipes, liquid outlet pipes and refractive indexes in the heat exchanger of the circuit board rinsing section, the problem of abnormal concentration of rinsing liquid after condensation is solved, and accurate analysis and judgment of the concentration of the cleaning liquid and improvement of the rinsing effect is achieved.
Patent Information
- Application Number
- CN202421787580.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-05-16
- Estimated Expiration
- 2034-07-25
AI Technical Summary
In the prior art, during the circuit board rinsing process, other impurities may be distilled and precipitated together during the distillation process, resulting in abnormal concentration of the rinsing liquid after condensation, affecting the subsequent rinsing effect.
A heat exchanger for the circuit board rinsing section is designed, including a steam pipe, a liquid outlet pipe and a refractive index. The steam is heat exchanged through the heat exchange pipe, and the liquid flows through the refractive index for refractive index measurement, analyzes and judges the concentration of the cleaning liquid, and adjusts the liquid utilization path through the control system.
Through heat exchange and refractive index measurement, the concentration of the cleaning solution is effectively analyzed and judged, which avoids the influence of impurities, and improves the rinsing effect and the reuse efficiency of the cleaning solution.
Smart Images
Figure CN222881725U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automated production equipment, in particular to a heat exchanger for a circuit board rinsing section. Background Art
[0002] During the production and processing of circuit boards, it is necessary to clean the circuit boards with cleaning liquid to remove the residual flux on the circuit boards and avoid the excess flux from affecting the subsequent production and processing of the circuit boards. Generally, after the circuit boards are cleaned of flux, the cleaned circuit boards need to be rinsed to avoid residual cleaning liquid on the circuit boards. During the rinsing process, the rinsed solution will be recovered, the recovered solution will be distilled, and then the steam generated during the distillation process will be condensed for heat exchange, thereby purifying the rinsing liquid in the mixed solution. However, in the prior art, after the distillation and condensation are completed, the condensed liquid is generally sent directly to the rinsing equipment for reuse. However, since other impurities may be distilled and precipitated together during the distillation process, the concentration of the condensed rinsing liquid will be abnormal, which will affect the subsequent rinsing effect.
[0003] Therefore, the prior art has defects and needs to be improved. Utility Model Content
[0004] The utility model aims to overcome the deficiencies of the prior art and provide a heat exchanger for a circuit board rinsing section.
[0005] The technical solution of the utility model is as follows: a heat exchanger for a circuit board rinsing section is provided, comprising: a heat exchanger body, and a refractometer connected to the heat exchanger body, the heat exchanger body is provided with a steam pipe and a liquid outlet pipe, the steam pipe and the liquid outlet pipe are connected inside the heat exchanger body through a heat exchange pipe, and the refractometer is movably installed in the middle section of the liquid outlet pipe.
[0006] Furthermore, both ends of the refractometer are connected to the liquid outlet pipeline through quick pipe clamps respectively.
[0007] Furthermore, the diameter of the liquid outlet pipe corresponding to the liquid inlet end of the refractometer is larger than the diameter of the liquid outlet pipe corresponding to the liquid outlet end.
[0008] Furthermore, the steam pipe and the liquid outlet pipe are arranged on the same side of the heat exchanger body, and a cold water inlet pipe and a cold water outlet pipe are arranged on the other side of the heat exchanger body. The cold water inlet pipe and the cold water outlet pipe are connected inside the heat exchanger body through a condensation pipe, and the outer tube wall of the condensation pipe is close to or in contact with the outer tube wall of the heat exchange pipe.
[0009] Furthermore, an electric three-way valve is connected to the rear end of the liquid outlet pipe, the liquid outlet pipe is connected to the liquid inlet end of the electric three-way valve, and two sets of output ends of the electric three-way valve are respectively connected to the rinsing chamber of the rinsing equipment and the abnormal liquid storage tank.
[0010] Furthermore, a pneumatic three-way valve is connected to the rear end of the liquid outlet pipe, the liquid outlet pipe is connected to the liquid inlet end of the pneumatic three-way valve, and two sets of output ends of the pneumatic three-way valve are respectively connected to the rinsing chamber of the rinsing equipment and the abnormal liquid storage tank.
[0011] By adopting the above scheme, the utility model allows steam to enter the heat exchange pipe through the steam pipe and perform heat exchange in the heat exchange pipe, so that the steam loses heat and liquefies, thereby forming liquid that flows into the liquid outlet pipe. When passing through the refractometer, the refractive index of the liquid is calculated by the refractometer, and the result is sent to the control system, so as to analyze and judge the concentration of the cleaning liquid in the liquid. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of the utility model.
[0013] Figure 2 It is the front view of the utility model. DETAILED DESCRIPTION
[0014] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0015] See also Figure 1 , Figure 2 The utility model provides a heat exchanger for a circuit board rinsing section, comprising: a heat exchanger body 1, and a refractometer 2 connected to the heat exchanger body 1, wherein the heat exchanger body 1 is provided with a steam pipe 11 and a liquid outlet pipe 12, wherein the steam pipe 11 and the liquid outlet pipe 12 are connected inside the heat exchanger body 1 through a heat exchange pipe, and the refractometer 2 is movably installed in the middle section of the liquid outlet pipe 12. After the product is rinsed, the rinsed solution is introduced into a distillation device, and the solution is distilled and purified by the distillation device, so that the cleaning liquid component in the solution evaporates, and the steam is introduced into the steam pipe 11. The steam enters the heat exchange pipe through the steam pipe 11, and heat exchange is performed in the heat exchange pipe, so that the steam loses heat and liquefies, thereby forming a liquid flowing into the liquid outlet pipe 12, and when passing through the refractometer 2, the refractive index of the liquid is measured by the refractometer 2, and the result is sent to the control system, so as to analyze and judge the cleaning liquid concentration in the liquid.
[0016] The two ends of the refractometer 2 are connected to the liquid outlet pipe 12 through the quick pipe clamps 3. The quick pipe clamps 3 are used to connect and fix the pipe joints, so as to facilitate the quick assembly and disassembly of the pipes, and the joints can be sealed to avoid leakage.
[0017] The diameter of the liquid outlet pipe 12 corresponding to the liquid inlet end of the refractometer 2 is larger than the diameter of the liquid outlet pipe 12 corresponding to the liquid outlet end, which is convenient for measuring the refractive index of the liquid through the refractometer 2 and transmitting the measured data to the control system for analysis and judgment. At the same time, the flow rate of the liquid in the direction of the liquid outlet end can be increased, so that the liquid that has completed the measurement and analysis can be input into the rinsing equipment for reuse as a cleaning liquid.
[0018] The steam pipe 11 and the liquid outlet pipe 12 are arranged on the same side of the heat exchanger body 1, and the other side of the heat exchanger body 1 is provided with a cold water inlet pipe 13 and a cold water outlet pipe 14, and the cold water inlet pipe 13 and the cold water outlet pipe 14 are connected inside the heat exchanger body 1 through a condensing pipe, and the outer pipe wall of the condensing pipe is close to or in contact with the outer pipe wall of the heat exchange pipe. The cold water inlet pipe 13 and the cold water outlet pipe 14 are respectively connected to the outlet pipe and the return pipe of the chiller, so as to form a circulation system, and the cold water is continuously circulated to exchange heat with the heat exchange pipe, so as to exchange heat with the steam in the heat exchange pipe, so that the steam releases heat and liquefies to form liquid, and flows out from the liquid outlet pipe 12.
[0019] In some embodiments, the rear end of the liquid outlet pipe 12 is connected to an electric three-way valve, the liquid outlet pipe 12 is connected to the liquid inlet end of the electric three-way valve, and the two sets of output ends of the electric three-way valve are respectively connected to the rinsing chamber of the rinsing device and the abnormal liquid storage tank. In some embodiments, the rear end of the liquid outlet pipe 12 is connected to a pneumatic three-way valve, the liquid outlet pipe 12 is connected to the liquid inlet end of the pneumatic three-way valve, and the two sets of output ends of the pneumatic three-way valve are respectively connected to the rinsing chamber of the rinsing device and the abnormal liquid storage tank.
[0020] The pipeline is switched by an electric three-way valve or a pneumatic three-way valve, so that according to the control system's judgment on the concentration of the cleaning liquid in the liquid, the liquid outlet pipeline 12 is respectively connected to the rinsing chamber of the rinsing equipment for reuse of the cleaning liquid, or the abnormal cleaning liquid is transported to the abnormal liquid storage tank for recovery, waiting for further detection and judgment.
[0021] In summary, the utility model allows steam to enter the heat exchange pipe through the steam pipe and perform heat exchange in the heat exchange pipe, so that the steam loses heat and liquefies, thereby forming a liquid that flows into the liquid outlet pipe. When passing through the refractometer, the refractive index of the liquid is calculated by the refractometer, and the result is sent to the control system, so as to analyze and judge the concentration of the cleaning liquid in the liquid.
[0022] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A heat exchanger for a circuit board rinsing section, characterized in that: include: A heat exchanger body and a refractometer connected to the heat exchanger body, wherein the heat exchanger body is provided with a steam pipe and a liquid outlet pipe, the steam pipe and the liquid outlet pipe are connected inside the heat exchanger body through a heat exchange pipe, and the refractometer is movably installed in the middle section of the liquid outlet pipe.
2. The heat exchanger for the circuit board rinsing section according to claim 1, characterized in that: The two ends of the refractometer are connected to the liquid outlet pipeline through quick pipe clamps respectively.
3. The heat exchanger for the circuit board rinsing section according to claim 1, characterized in that: The diameter of the liquid outlet pipe corresponding to the liquid inlet end of the refractometer is larger than the diameter of the liquid outlet pipe corresponding to the liquid outlet end.
4. The heat exchanger for the circuit board rinsing section according to claim 1, characterized in that: The steam pipe and the liquid outlet pipe are arranged on the same side of the heat exchanger body, and a cold water inlet pipe and a cold water outlet pipe are arranged on the other side of the heat exchanger body. The cold water inlet pipe and the cold water outlet pipe are connected inside the heat exchanger body through a condensation pipe, and the outer tube wall of the condensation pipe is close to or in contact with the outer tube wall of the heat exchange pipe.
5. The heat exchanger for the circuit board rinsing section according to claim 1, characterized in that: The rear end of the liquid outlet pipe is connected to an electric three-way valve, the liquid outlet pipe is connected to the liquid inlet end of the electric three-way valve, and the two sets of output ends of the electric three-way valve are respectively connected to the rinsing chamber of the rinsing equipment and the abnormal liquid storage tank.
6. The heat exchanger for the circuit board rinsing section according to claim 1, characterized in that: The rear end of the liquid outlet pipe is connected to a pneumatic three-way valve, the liquid outlet pipe is connected to the liquid inlet end of the pneumatic three-way valve, and the two sets of output ends of the pneumatic three-way valve are respectively connected to the rinsing chamber of the rinsing equipment and the abnormal liquid storage tank.