Application device for controlling chromium solution to return to tank by using liquid level relay

Abstract

An application device for controlling a chromium solution to return to a tank by using a liquid level relay relates to the technical field of oxidation prevention for copper foil production, and comprises a multi-channel ion analyzer, a temporary liquid collecting tank, a magnetic drive circulating pump, a three-needle electrode, the liquid level relay, a control box and a chromium solution total tank, the multi-channel ion analyzer is communicated with the temporary liquid collecting tank through a pipeline, the multi-channel ion analyzer is communicated with the chromium solution total tank through a pipeline, the inlet end of the magnetic driving circulating pump is communicated with the temporary liquid collecting tank through a pipeline, and the outlet end of the magnetic driving circulating pump is communicated with the chromium solution total tank through a pipeline. According to the application device for controlling the chromium solution to return to the tank by using the liquid level relay, a complete cycle can be formed, so that waste caused by pouring of the test solution is avoided, meanwhile, the problem of liquid level fluctuation caused by direct magnetic force driving of the circulating pump can be avoided by adopting the temporary liquid collecting tank, and the application device is stable in operation and low in cost. And DCS display abnormity caused by page fluctuation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-oxidation for copper foil production, in particular to an application device that uses a liquid level relay to control the return of chromium solution to a tank. Background Art

[0002] In copper foil production, it is necessary to monitor whether the chromium ion concentration meets the requirements, and then adjust the concentration according to real-time data. Therefore, the chromium ion solution in the chromium solution main tank needs to be introduced into the multi-channel ion analyzer through a pipeline for concentration analysis, and then transferred back to the chromium solution main tank after analysis. However, due to the height difference problem, the solution coming out of the multi-channel ion analyzer cannot flow back to the chromium solution main tank. When encountering this problem in the past, either the solution is directly poured out after the test amount is reduced, which leads to a waste of resources, or the solution is directly pumped into the chromium solution main tank using a circulation pump, which causes page fluctuations and brings abnormalities to the DCS display. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide an application device that uses a liquid level relay to control the return of the chromium solution to a tank, which can form a complete cycle, thereby avoiding the waste caused by pouring out the test solution. At the same time, the use of a temporary liquid collection tank can avoid the problem of liquid level fluctuation caused by directly using a magnetic drive circulation pump. The operation is stable, and the DCS display abnormality caused by page fluctuations is avoided, which can effectively solve the problems in the background technology.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] An application device for controlling the return of a chromium solution to a tank using a liquid level relay comprises a multi-channel ion analyzer, a temporary liquid collecting tank, a magnetically driven circulation pump, a three-needle electrode, a liquid level relay, a control box and a chromium solution main tank. The multi-channel ion analyzer and the temporary liquid collecting tank, as well as the multi-channel ion analyzer and the chromium solution main tank are both connected via pipelines, the inlet end of the magnetically driven circulation pump is connected to the temporary liquid collecting tank via a pipeline, the outlet end of the magnetically driven circulation pump is connected to the chromium solution main tank via a pipeline, the three-needle electrode is installed on the inner side of the temporary liquid collecting tank, and the liquid level relay is installed in the control box.

[0006] Furthermore, the upper portion of the three-needle electrode is electrically connected to the controller in the control box, and the lower portion of the three-needle electrode is grounded.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows: the application device of the present invention which uses a liquid level relay to control the return of the chromium solution to the tank has the following advantages: the solution coming out of the multi-channel ion analyzer is recovered through a temporary liquid collection tank, and then the liquid level relay is used to control the start and stop of the magnetically driven circulation pump, thereby continuously sending the chromium solution back to the chromium solution main tank, thus forming a complete cycle, thereby avoiding the waste caused by pouring out the test solution, and at the same time, the use of a temporary liquid collection tank can avoid the problem of liquid level fluctuation caused by directly using a magnetically driven circulation pump, and the operation is stable, avoiding the abnormal DCS display caused by page fluctuations. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the planar structure of the utility model.

[0009] In the figure: 1 multi-channel ion analyzer, 2 temporary liquid collection tank, 3 magnetic drive circulation pump, 4 three-needle electrode, 5 liquid level relay, 6 control box, 7 chromium solution main tank. DETAILED DESCRIPTION

[0010] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0011] See also Figure 1 The present embodiment provides a technical solution: an application device using a liquid level relay to control the return of a chromium solution to a tank, comprising a multi-channel ion analyzer 1, a temporary liquid collecting tank 2, a magnetically driven circulation pump 3, a three-needle electrode 4, a liquid level relay 5, a control box 6 and a chromium solution main tank 7, wherein the multi-channel ion analyzer 1 and the temporary liquid collecting tank 2 as well as the multi-channel ion analyzer 1 and the chromium solution main tank 7 are connected via pipelines, the inlet end of the magnetically driven circulation pump 3 is connected to the temporary liquid collecting tank 2 via a pipeline, the outlet end of the magnetically driven circulation pump 3 is connected to the chromium solution main tank 7 via a pipeline, and the three-needle electrode 4 is installed in the temporary liquid collecting tank 2. Inside, the liquid level relay 5 is installed in the control box 6, and the chromium ion solution in the chromium solution main tank 7 is introduced into the multi-channel ion analyzer 1 through a pipeline for concentration analysis. After the analysis, it is recovered through the temporary liquid collecting tank 2, and then the liquid level relay 5 is used to control the start and stop of the magnetic-driven circulation pump 3, so as to continuously send the chromium solution back to the chromium solution main tank 7, thereby forming a complete cycle, thereby avoiding the waste caused by pouring out the test solution. At the same time, the use of the temporary liquid collecting tank 2 can avoid the liquid level fluctuation problem caused by directly using the magnetic-driven circulation pump 3, and the operation is stable, avoiding the DCS display abnormality caused by page fluctuation.

[0012] The upper part of the three-needle electrode 4 is electrically connected to the controller in the control box 6, and the lower part of the three-needle electrode 4 is grounded. When the chromium solution is submerged in the topmost position of the three-needle electrode 4, the liquid level relay 5 is turned on so that its contacts are closed. At this time, the controller in the control box 6 controls the magnetic-driven circulation pump 3 to start working, thereby extracting the chromium solution from the temporary liquid collecting tank 2; when the liquid level drops to the middle position, the top three-needle electrode 4 disconnects the contacts of the liquid level relay 5, and closes the contacts of the low liquid level position, thereby allowing the magnetic-driven circulation pump 3 to continue working and maintain the liquid level; when the liquid level drops to a low position, the contacts of the liquid level relay 5 are disconnected, and at the same time, a signal is sent to the liquid level relay 5 with a low liquid level alarm signal, thereby allowing the controller in the control box 6 to control the magnetic-driven circulation pump 3 to stop working; when the liquid level rises again and submerges the top electrode of the three-needle electrode 4, the magnetic-driven circulation pump 3 is restarted to maintain the liquid level to a high position.

[0013] The utility model provides an application device for controlling the return of chromium solution to a tank by using a liquid level relay, and the working principle is as follows: when the chromium solution is submerged at the top position of the three-needle electrode 4, the liquid level relay 5 is turned on, so that its contacts are closed. At this time, the controller in the control box 6 controls the magnetic force driven circulation pump 3 to start working, so as to extract the chromium solution from the temporary liquid collecting tank 2; when the liquid level drops to the middle position, the top three-needle electrode 4 disconnects the contacts of the liquid level relay 5, and the contacts of the low liquid level are closed, so that the magnetic force driven circulation pump 3 continues to work and maintains the liquid level; when the liquid level drops to the low position, the contacts of the liquid level relay 5 are disconnected. , and at the same time, a signal is sent to the liquid level relay 5 with a low liquid level alarm signal, so that the controller in the control box 6 controls the magnetic-driven circulation pump 3 to stop working; when the liquid level rises again to cover the top electrode of the three-needle electrode 4, the magnetic-driven circulation pump 3 is restarted to maintain the liquid level to a high level, and the chromium ion solution in the chromium solution main tank 7 is introduced into the multi-channel ion analyzer 1 through a pipeline for concentration analysis, and after analysis, it is recovered through the temporary liquid collection tank 2, and then the liquid level relay 5 is used to control the start and stop of the magnetic-driven circulation pump 3, so as to continuously send the chromium solution back to the chromium solution main tank 7, thereby forming a complete cycle.

[0014] It is worth noting that the components disclosed in the above embodiments are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. They can be manually controlled by workers, so the magnetically driven circulation pump 3 has two start and stop modes: manual and automatic.

[0015] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances, for example, the rotational connection can be a rotational connection through a bearing.

[0016] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and ways to implement the technical solution. The above is only a preferred implementation scheme of the present invention. However, technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, which are all within the scope of protection of the present invention.

Claims

1. An application device using a liquid level relay to control the return of chromium solution to a tank, characterized in that: The invention comprises a multi-channel ion analyzer (1), a temporary liquid collecting tank (2), a magnetically driven circulation pump (3), a three-needle electrode (4), a liquid level relay (5), a control box (6) and a chromium solution main tank (7), wherein the multi-channel ion analyzer (1) and the temporary liquid collecting tank (2) as well as the multi-channel ion analyzer (1) and the chromium solution main tank (7) are connected via pipelines, the inlet end of the magnetically driven circulation pump (3) is connected to the temporary liquid collecting tank (2) via a pipeline, the outlet end of the magnetically driven circulation pump (3) is connected to the chromium solution main tank (7) via a pipeline, the three-needle electrode (4) is installed on the inner side of the temporary liquid collecting tank (2), and the liquid level relay (5) is installed in the control box (6).

2. The device for controlling the return of chromium solution to a tank using a liquid level relay according to claim 1, characterized in that: The upper portion of the three-needle electrode (4) is electrically connected to a controller in a control box (6), and the lower portion of the three-needle electrode (4) is grounded.

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