CN201311408Y - PH detecting device - Google Patents

Abstract

The utility model relates to a pH detection device. The existing device relies on manual cleaning, and the operation is complicated. In the utility model, the side wall of the detection tank is provided with a liquid inlet and a liquid outlet, and an ultrasonic generator is arranged at the bottom. A steady flow cover is arranged in the detection tank, and a liquid hole is opened on its side wall. The detection electrode extends into the stabilizing cover through the cover plate. The liquid inlet pipe is connected with the liquid inlet through the liquid inlet valve, and the liquid outlet pipe is connected with the liquid outlet through the liquid outlet valve. The liquid inlet end of the liquid inlet valve is connected with the liquid outlet end of the liquid outlet valve through a bypass pipe, and the bypass pipe There is a bypass valve on it. The utility model adopts ultrasonic cleaning, does not produce any direct impact on the fragile pH glass detection electrode, and ensures that the glass electrode is not damaged. The detection electrode does not need to be removed during cleaning, which is convenient and simple; the bypass pipe is opened during cleaning to ensure that the production process is not interrupted.

Description

A pH detection device

technical field

The utility model belongs to the technical field of electrochemical detection, in particular to a pH automatic and continuous detection device capable of online cleaning.

Background technique

pH detection is essential for the detection of liquid acidity and alkalinity in the fields of chemical reaction and environmental detection. During the detection process, the surface of the pH electrode will be affected by the liquid to be detected, and gradually form a film composed of dirt. This film hinders the penetration of ions in the liquid to the glass electrode, and the pH electrode can no longer perform normal detection. The traditional solution is to manually remove the pH electrode from the device, and use a brush to clean the surface of the glass electrode to remove dirt.

The disadvantages of the traditional method are: the glass head of the electrode is easily broken during disassembly and cleaning; after the electrode is disassembled from the pipeline, the liquid cannot circulate, and the production process has to be interrupted; disassembly, cleaning, and reinstallation, the entire operation process too complicated. Therefore, it is necessary to study a device that does not need to remove the electrode from the detection device, and can clean the glass electrode without damage while the chemical reaction is in progress.

Contents of the invention

The purpose of the utility model is to provide an ultrasonic automatic cleaning pH continuous detection device that can perform non-damage online cleaning without disassembly to ensure continuous production process.

The device of the utility model comprises a detection tank, the lower part of the side wall of the detection tank is provided with corresponding liquid inlets and liquid outlets, the top of the detection tank is provided with a cover plate, and the bottom of the detection tank is provided with an ultrasonic generator. A flow stabilization cover is arranged in the detection tank, the flow stabilization cover is a cylinder with two ends open, and a liquid hole is opened on the side wall, and one end of the flow stabilization cover is fixed under the cover plate. The detection electrode is set through the cover plate, and its electrode head extends into the steady flow cover, and the detection electrode is connected with the cover plate through a fixing nut. The liquid inlet pipe is connected with the liquid inlet through the liquid inlet valve, and the liquid outlet pipe is connected with the liquid outlet through the liquid outlet valve. The liquid inlet end of the liquid inlet valve is connected with the liquid outlet end of the liquid outlet valve through a bypass pipe, and the bypass pipe There is a bypass valve on it.

The device of the utility model adopts ultrasonic cleaning, does not produce any direct impact on the fragile pH glass detection electrode, and ensures that the glass electrode is not damaged. The detection electrode does not need to be removed during cleaning, and can be cleaned directly on the pipeline, which is convenient and simple; at the same time, by opening the bypass pipeline during cleaning, the liquid can flow through the bypass to ensure that the production process is not interrupted.

Description of drawings

Fig. 1 is the structural representation of detection part in the utility model;

Fig. 2 is a structural schematic diagram of the pipeline part in the utility model.

Detailed ways

As shown in Figure 1, the detection part of the pH automatic continuous detection device includes a detection tank 4, the lower part of the side wall of the detection tank 4 is provided with a corresponding liquid inlet 8 and a liquid outlet 6, and the top of the detection tank 4 is provided with a cover The plate 3 and the bottom of the detection tank 4 are provided with an ultrasonic generator 7 at a position corresponding to the pH glass detection electrode 1 . A stabilizing cover 5 is arranged in the detection tank 4, and the stabilizing cover 5 is a cylindrical body with both ends open, and a liquid hole 9 is opened on its side wall. The detected liquid enters the detection tank 4 from the liquid inlet 8, flows out from the liquid outlet 6, and needs to pass through the liquid hole 9 when passing through the steady flow cover 5, so as to realize a stable flow rate. One end of the flow stabilization cover 5 is fixed under the cover plate 3, and the inner cavity of the flow stabilization cover 5 is a detection chamber. The pH glass detection electrode 1 is set through the cover plate 3 , and its electrode tip extends into the detection cavity, and the detection electrode 1 is connected with the cover plate 3 through the fixing nut 2 .

As shown in FIG. 2 , the pipeline part of the automatic and continuous pH detection device includes a liquid inlet pipeline 10 , a liquid outlet pipeline 15 and a bypass pipeline 12 . The liquid inlet pipe 10 communicates with the liquid inlet 8 through the liquid inlet valve 11, the liquid outlet pipe 15 communicates with the liquid outlet 6 through the liquid outlet valve 14, and the liquid inlet end of the liquid inlet valve 11 and the liquid outlet end of the liquid outlet valve 14 pass through A bypass pipeline 12 is connected, and a bypass valve 13 is arranged on the bypass pipeline 12 . The liquid inlet valve 11 , the detection part and the liquid outlet valve 14 connected in series are connected in parallel with the bypass valve 13 .

When working normally, open the liquid inlet valve and liquid outlet valve, close the bypass valve, and the pH glass detection electrode will detect the liquid in the steady flow cover in real time. After a certain period of time (depending on how quickly the liquid pollutes the pH electrode), close the liquid inlet valve and liquid outlet valve, open the bypass valve, and start the ultrasonic generator at the same time, at this time, the liquid flows through the bypass pipe. The ultrasonic generator generates ultrasonic waves, which can clean the pH glass detection electrode.

Claims (1)

1. A pH detection device, comprising a detection tank, characterized in that the lower part of the side wall of the detection tank is provided with a liquid inlet and a liquid outlet corresponding to the position, the top of the detection tank is provided with a cover plate, and the bottom of the detection tank is provided with a Ultrasonic generator; there is a steady flow cover in the detection tank, the steady flow cover is a cylinder with open ends, and a liquid hole is opened on the side wall, and one end of the steady flow cover is fixed under the cover plate; the detection electrode passes through the cover The electrode head extends into the steady flow cover, and the detection electrode is connected to the cover plate through the fixed nut; the liquid inlet pipe is connected to the liquid inlet through the liquid inlet valve, and the liquid outlet pipe is connected to the liquid outlet through the liquid outlet valve. The liquid inlet end of the liquid inlet valve is connected with the liquid outlet end of the liquid outlet valve through a bypass pipeline, and a bypass valve is arranged on the bypass pipeline.

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