Instrument for detecting ion pollution concentration on surface of printed board

Abstract

The utility model discloses an instrument for detecting the ion pollution concentration on the surface of a printed board, which comprises a machine table, a man-machine interaction interface, a temperature instrument, a solution box, a filter column, a circulating water pipe, a water pump and an ion detection device, the man-machine interaction interface and the temperature instrument are arranged on the machine table, and the solution box, the filter column, the circulating water pipe and the water pump are all arranged in the machine table. The solution tank, the filter column and the water pump are communicated with one another through a circulating water pipe, the solution tank is filled with extract liquor, and the ion detection device is soaked in the extract liquor and electrically connected with the human-computer interaction interface and the temperature instrument; wherein the extraction liquid is used for detecting the surface ion concentration of the printed board, the solution box is used for storing the extraction liquid, the filtering column is used for adjusting the electric conductivity in the extraction liquid, the circulating water pipe is used for communicating the solution box with the filtering column, and the water pump provides a power source for circulation of the extraction liquid among the solution box, the filtering column and the circulating water pipe. The device is accurate in detection, convenient to operate and good in detection effect.

Description

Technical Field

[0001] The utility model relates to the technical field of printed circuit board surface ion pollution concentration detection, in particular to an instrument for detecting the ion pollution concentration on the printed circuit board surface. Background Art

[0002] In the prior art, the concentration of ion contamination on the surface of printed circuit boards is generally detected by using an extraction solution. The concentration of ion contamination on the surface of the existing printed circuit boards is often tested by manually placing the printed circuit boards in a solution box filled with an extraction solution. The testing process is essentially a process of extracting ions on the surface of the printed circuit boards and a stirring process, and its goal is to achieve a relatively stable conductivity of the extraction solution. Before each test, the instrument must have a regeneration process to ensure that the conductivity of the extraction solution is 0.15 or 0.20μS / cm (according to the test benchmark requirements). People use a static test method during testing, that is, the test is divided into two processes: stirring and regeneration. The regeneration process ensures that the initial state of the extraction solution is "clean" so that the resistivity of the extraction solution reaches the test conditions (66M or 50M). Stirring completely extracts the ions on the surface of the printed circuit board into the extraction solution, so that the conductivity of the extraction solution reaches a stable state. Therefore, before each PCB test or standard liquid test, it is necessary to ensure that the extract is in a relatively clean state, and the extract needs to be regenerated first. During this process, the extract flows through the ion exchange column, so the conductivity of the extract continues to decrease. This cut-off conductivity depends on the test conditions set by the user. In the prior art, the extract is often cleaned manually before it can be reused. This detection method is inefficient, the cleaning process is cumbersome, and it is easy to cause inaccurate detection and poor practicality.

[0003] In the related art, the extraction liquid needs to be cleaned manually before it can be reused. This detection method is inefficient, the cleaning process is cumbersome and troublesome, and it is easy to cause inaccurate detection. There is still a lack of better technical solutions. Utility Model Content

[0004] In view of this, it is necessary to provide an instrument for detecting the concentration of ionic contamination on the surface of a printed circuit board, so as to at least solve the problem in the related art that the extraction liquid must be manually cleaned before it can be reused. This detection method is inefficient, the cleaning process is cumbersome and troublesome, and it is easy to cause inaccurate detection.

[0005] The embodiment of the present application provides an instrument for detecting the surface ion contamination concentration of a printed circuit board, which includes a machine, a human-machine interface, a temperature meter, a solution box, a filter column, a circulating water pipe, a water pump and an ion detection device, wherein the human-machine interface and the temperature meter are arranged on the machine, the solution box, the filter column, the circulating water pipe and the water pump are all arranged inside the machine, the solution box, the filter column and the water pump are interconnected through the circulating water pipe, the interior of the solution box is filled with an extraction liquid, the ion detection device is immersed in the extraction liquid, and the ion detection device is electrically connected to the human-machine interface and the temperature meter respectively; wherein the extraction liquid is used to detect the surface ion concentration of the printed circuit board, the solution box is used to store the extraction liquid, the filter column is used to adjust the conductivity in the extraction liquid, the circulating water pipe is used to connect the solution box and the filter column, and the water pump provides a power source for the extraction liquid to circulate between the solution box, the filter column and the circulating water pipe.

[0006] In one embodiment, the human-computer interaction interface is arranged at the upper end of the machine, the human-computer interaction interface is a computer, a temperature instrument receiving slot is arranged on the front side of the machine, the temperature instrument is embedded in the interior of the temperature instrument receiving slot, the sensor of the temperature instrument is immersed in the extraction liquid, the human-computer interaction interface is used to display the data detected by the ion detection device, the surface ion concentration of the extraction liquid, and the temperature instrument is used to display the temperature of the extraction liquid.

[0007] In one embodiment, an upper cover is provided at the upper end of the solution tank, a handle is provided on the upper surface of the upper cover, a first liquid outlet and a first liquid inlet are provided at the lower end of the solution tank, a second liquid inlet is provided at the upper end of the filter column, a second liquid outlet is provided at the lower end of the filter column, a third liquid inlet is provided at the upper end of the water pump, and a third liquid outlet is provided on one side of the water pump.

[0008] In one embodiment, the circulating water pipe includes a first pipe, a second pipe and a third pipe, the first pipe is arranged between the solution tank and the filter column, the second pipe is arranged between the filter column and the water pump, and the third pipe is arranged between the solution tank and the water pump.

[0009] In one embodiment, the first pipe includes a first water outlet and a first water inlet, the second pipe includes a second water outlet and a second water inlet, and the third pipe includes a third water outlet and a third water inlet.

[0010] In one embodiment, the first liquid outlet of the solution tank is connected to the first water inlet of the first pipe, the first water outlet of the first pipe is connected to the second liquid inlet of the filter column, and the extract in the solution tank is transported to the filter column through the first pipe.

[0011] In one embodiment, the second liquid outlet of the filter column is connected to the second water inlet of the second pipe, the second water outlet of the second pipe is connected to the third liquid inlet of the water pump, and the extract of the filter column is transported to the water pump through the second pipe.

[0012] In one embodiment, the third liquid outlet of the water pump is connected to the third water inlet of the third pipe, the third water outlet of the third pipe is connected to the first liquid inlet of the solution tank, and the extraction liquid of the water pump is transported to the solution tank through the third pipe.

[0013] In one embodiment, a first pipeline electromagnetic valve is provided on the first pipeline, and a second pipeline electromagnetic valve is provided on the second pipeline.

[0014] In one embodiment, the circulating water pipe includes a fourth pipe, the fourth pipe includes a fourth water inlet and a fourth water outlet, the fourth water inlet of the fourth pipe is connected to the first pipe, the fourth water outlet of the fourth pipe is connected to the second pipe, the fourth pipe is provided with a third pipeline electromagnetic valve, and the extraction liquid in the solution tank is transported to the water pump through the fourth pipe.

[0015] The beneficial effects of the utility model are as follows: the present application uses the structural design of the solution box, the filter column, the circulating water pipe and the water pump to enable the extract to automatically circulate and filter between the solution box and the filter column. After the tested extract is filtered through the filter column, it reaches a relatively clean state and can be used again without manual extraction, which reduces the processing difficulty and improves the work efficiency. The extraction liquid is filtered and cleaned conveniently and quickly. At the same time, the various pipelines of the circulating water pipe are monitored through the pipeline electromagnetic valve. When the solution conductivity reaches the cut-off conductivity, the regeneration will not be automatically stopped immediately. The control program will switch the relevant pipeline electromagnetic valves to ensure that the ions in all pipelines are absorbed by the exchange column and finally stop automatically. It has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application;

[0017] Figure 2 A schematic diagram of the internal structure of an embodiment of the present application;

[0018] Figure 3 It is a partial structural diagram of an embodiment of the present application. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly mounted on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0022] See also Figures 1 to 3 The present invention discloses an instrument for detecting the ion pollution concentration on the surface of a printed circuit board, which includes a machine 100, a human-machine interface 200, a temperature meter 300, a solution box 400, a filter column 500, a circulating water pipe 600, a water pump 700 and an ion detection device 800. The human-machine interface 200 and the temperature meter 300 are arranged on the machine 100, the solution box 400, the filter column 500, the circulating water pipe 600 and the water pump 700 are all arranged inside the machine 100, and the solution box 400, the filter column 500 and the water pump 700 are connected to each other through the circulating water pipe 600. The solution tank 400 is connected, the interior of the solution tank 400 is filled with extraction liquid, the ion detection device 800 is immersed in the extraction liquid, and the ion detection device 800 is electrically connected to the human-machine interaction interface 200 and the temperature meter 300 respectively; wherein, the extraction liquid is used to detect the surface ion concentration of the printed circuit board, the solution tank 400 is used to store the extraction liquid, the filter column 500 is used to adjust the conductivity in the extraction liquid, the circulating water pipe 600 is used to connect the solution tank 400 and the filter column 500, and the water pump 700 provides a power source for the extraction liquid to circulate between the solution tank 400, the filter column 500 and the circulating water pipe 600.

[0023] In some optional embodiments, the human-computer interaction interface 200 is arranged at the upper end of the machine 100, the human-computer interaction interface 200 is a computer, and a temperature meter 300 receiving groove is provided on the front side of the machine 100. The temperature meter 300 is embedded in the interior of the temperature meter 300 receiving groove. The sensor of the temperature meter 300 is immersed in the extraction liquid. The human-computer interaction interface 200 is used to display the data detected by the ion detection device 800 and the surface ion concentration of the extraction liquid. The temperature meter 300 is used to display the temperature of the extraction liquid.

[0024] In some optional embodiments, an upper cover is provided at the upper end of the solution tank 400, a handle is provided on the upper surface of the upper cover, a first liquid outlet and a first liquid inlet are provided at the lower end of the solution tank 400, a second liquid inlet is provided at the upper end of the filter column 500, a second liquid outlet is provided at the lower end of the filter column 500, a third liquid inlet is provided at the upper end of the water pump 700, and a third liquid outlet is provided on one side of the water pump 700.

[0025] In some optional embodiments, the circulating water pipe 600 includes a first pipe 61, a second pipe 62 and a third pipe 63. The first pipe 61 is arranged between the solution tank 400 and the filter column 500, the second pipe 62 is arranged between the filter column 500 and the water pump 700, and the third pipe 63 is arranged between the solution tank 400 and the water pump 700.

[0026] In some optional embodiments, the first pipe 61 includes a first water outlet and a first water inlet, the second pipe 62 includes a second water outlet and a second water inlet, and the third pipe 63 includes a third water outlet and a third water inlet.

[0027] In some optional embodiments, the first liquid outlet of the solution tank 400 is connected to the first water inlet of the first pipe 61, the first water outlet of the first pipe 61 is connected to the second liquid inlet of the filter column 500, and the extraction liquid in the solution tank 400 is transported to the filter column 500 through the first pipe 61.

[0028] In some optional embodiments, the second liquid outlet of the filter column 500 is connected to the second water inlet of the second pipe 62, the second water outlet of the second pipe 62 is connected to the third liquid inlet of the water pump 700, and the extract of the filter column 500 is transported to the water pump 700 through the second pipe 62.

[0029] In some optional embodiments, the third liquid outlet of the water pump 700 is connected to the third water inlet of the third pipe 63, the third water outlet of the third pipe 63 is connected to the first liquid inlet of the solution tank 400, and the extraction liquid of the water pump 700 is transported to the solution tank 400 through the third pipe 63.

[0030] In some optional embodiments, a first pipeline electromagnetic valve 81 is provided on the first pipeline 61, and a second pipeline electromagnetic valve 82 is provided on the second pipeline 62. The first pipeline electromagnetic valve 81 is used to control the opening and closing of the first pipeline 61, and the second pipeline electromagnetic valve 82 is used to control the opening and closing of the second pipeline 62.

[0031] In some optional embodiments, the circulating water pipe includes a fourth pipe 64, the fourth pipe 64 includes a fourth water inlet and a fourth water outlet, the fourth water inlet of the fourth pipe 64 is connected to the first pipe 61, the fourth water outlet of the fourth pipe 64 is connected to the second pipe 62, the fourth pipe 64 is provided with a third pipeline electromagnetic valve 83, the extract in the solution tank 400 is transported to the water pump 700 through the fourth pipe 64, and the third pipeline electromagnetic valve 83 is used to control the on and off of the fourth pipe 64.

[0032] It should be noted that the present application is used to detect the surface ion contamination concentration of printed boards, components or circuit boards after assembly. The measuring board type range is 5cm×5cm to 20cm×20cm, and the measurement accuracy is ±5%; test mode: static or dynamic: the ion detection device of the present application is an ion contamination tester, which is used to test the ion concentration of printed circuit boards, and can also be applied to the ion concentration test after the assembly of components or circuit boards. It is widely used in component or circuit board manufacturers and electronic and electrical equipment production and assembly industries.

[0033] 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.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An instrument for detecting the concentration of ion contamination on the surface of a printed circuit board, characterized in that: It includes a machine, a human-machine interface, a temperature meter, a solution box, a filter column, a circulating water pipe, a water pump and an ion detection device. The human-machine interface and the temperature meter are arranged on the machine, the solution box, the filter column, the circulating water pipe and the water pump are all arranged inside the machine, the solution box, the filter column and the water pump are interconnected through the circulating water pipe, the solution box is filled with an extraction liquid, the ion detection device is immersed in the extraction liquid, and the ion detection device is electrically connected to the human-machine interface and the temperature meter respectively; wherein the extraction liquid is used to detect the surface ion concentration of the printed circuit board, the solution box is used to store the extraction liquid, the filter column is used to adjust the conductivity in the extraction liquid, the circulating water pipe is used to connect the solution box and the filter column, and the water pump provides a power source for the extraction liquid to circulate between the solution box, the filter column and the circulating water pipe.

2. The instrument for detecting ion contamination concentration on the surface of a printed circuit board according to claim 1, characterized in that: The human-machine interaction interface is arranged at the upper end of the machine, the human-machine interaction interface is a computer, a temperature instrument receiving slot is arranged on the front side of the machine, the temperature instrument is embedded in the interior of the temperature instrument receiving slot, the sensor of the temperature instrument is immersed in the extraction liquid, the human-machine interaction interface is used to display the data detected by the ion detection device, the surface ion concentration of the extraction liquid, and the temperature instrument is used to display the temperature of the extraction liquid.

3. The instrument for detecting ion contamination concentration on the surface of a printed circuit board according to claim 1, characterized in that: An upper cover is provided at the upper end of the solution tank, a handle is provided on the upper surface of the upper cover, a first liquid outlet and a first liquid inlet are provided at the lower end of the solution tank, a second liquid inlet is provided at the upper end of the filter column, a second liquid outlet is provided at the lower end of the filter column, a third liquid inlet is provided at the upper end of the water pump, and a third liquid outlet is provided on one side of the water pump.

4. The instrument for detecting ion contamination concentration on the surface of a printed circuit board according to claim 3, characterized in that: The circulating water pipe includes a first pipe, a second pipe and a third pipe, the first pipe is arranged between the solution tank and the filter column, the second pipe is arranged between the filter column and the water pump, and the third pipe is arranged between the solution tank and the water pump.

5. The instrument for detecting ion contamination concentration on the surface of a printed circuit board according to claim 4, characterized in that: The first pipeline includes a first water outlet and a first water inlet, the second pipeline includes a second water outlet and a second water inlet, and the third pipeline includes a third water outlet and a third water inlet.

6. The instrument for detecting ion contamination concentration on the surface of a printed circuit board according to claim 5, characterized in that: The first liquid outlet of the solution box is connected to the first water inlet of the first pipe, the first water outlet of the first pipe is connected to the second liquid inlet of the filter column, and the extract in the solution box is transported to the filter column through the first pipe.

7. The instrument for detecting ion contamination concentration on the surface of a printed circuit board according to claim 5, characterized in that: The second liquid outlet of the filter column is connected to the second water inlet of the second pipe, the second water outlet of the second pipe is connected to the third liquid inlet of the water pump, and the extract of the filter column is transported to the water pump through the second pipe.

8. The instrument for detecting ion contamination concentration on the surface of a printed circuit board according to claim 5, characterized in that: The third liquid outlet of the water pump is connected to the third water inlet of the third pipe, the third water outlet of the third pipe is connected to the first liquid inlet of the solution tank, and the extraction liquid of the water pump is transported to the solution tank through the third pipe.

9. The instrument for detecting ion contamination concentration on the surface of a printed circuit board according to claim 5, characterized in that: A first pipeline electromagnetic valve is provided on the first pipeline, and a second pipeline electromagnetic valve is provided on the second pipeline, wherein the first pipeline electromagnetic valve is used to control the on-off of the first pipeline, and the second pipeline electromagnetic valve is used to control the on-off of the second pipeline.

10. The instrument for detecting ion contamination concentration on the surface of a printed circuit board according to claim 5, characterized in that: The circulating water pipe includes a fourth pipe, the fourth pipe includes a fourth water inlet and a fourth water outlet, the fourth water inlet of the fourth pipe is connected to the first pipe, the fourth pipe is provided with a third pipeline electromagnetic valve, the fourth water outlet of the fourth pipe is connected to the second pipe, the extract in the solution tank is transported to the water pump through the fourth pipe, wherein the third pipeline electromagnetic valve is used to control the on-off of the fourth pipe.

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