An on-line ph electrode measurement protection device

Abstract

This utility model relates to the field of wastewater monitoring and discloses an online pH electrode measurement and protection device. The utility model includes a detection tube and a pH electrode. Flanges two are fixedly connected to both the left and right ends of the detection tube. A filter cylinder is located at the left end of the detection tube, and flanges one are fixedly connected to both the left and right ends of the filter cylinder. The right flange one of the filter cylinder is connected to the left flange two of the detection tube, thus communicating with the detection tube. A sleeve is fixedly connected to the top center of the detection tube, and flange three is fixedly connected to the outer wall of the top of the sleeve. A guide tube is located inside the detection tube, below the sleeve. This utility model divides the water flow into low-velocity branches through the guide tube, reducing the flow velocity at pH electrode contact to a safe range and significantly extending the lifespan of the pH electrode.

Description

Technical Field

[0001] This utility model relates to the field of wastewater monitoring, specifically an online pH electrode measurement and protection device. Background Technology

[0002] In flue gas desulfurization, electroplating wastewater, chemical wastewater, pickling wastewater, and pharmaceutical wastewater, the pH electrode potential method is a device that can achieve continuous online measurement and monitoring. Moreover, the potential method can obtain accurate and repeatable pH values.

[0003] pH electrodes cannot be left in the air for a long time. Once the equipment is shut down, the pH electrode needs to be disassembled and immersed in liquid, which is not convenient. The pH electrode cannot be washed by water with a high flow rate, as high flow rate water can damage the pH electrode. Utility Model Content

[0004] To overcome the above-mentioned shortcomings, this utility model provides an online pH electrode measurement and protection device.

[0005] The technical solution adopted by this utility model is as follows:

[0006] An online pH electrode measurement and protection device includes a detection tube and a pH electrode. Flange 2 is fixedly connected to both the left and right ends of the detection tube. A filter cylinder is located at the left end of the detection tube, with flange 1 fixedly connected to both the left and right ends of the filter cylinder. Flange 1 at the right end of the filter cylinder is connected to flange 2 at the left end of the detection tube, allowing communication between the filter cylinder and the detection tube. A sleeve is fixedly connected to the top center of the detection tube, with flange 3 fixedly connected to the outer wall of the top of the sleeve. A guide tube is located inside the detection tube, below the sleeve, with its bottom end fixedly connected to the inner bottom wall of the detection tube. Inlet and outlet ports are respectively opened between the top left and right sides of the guide tube and the inner wall of the detection tube. The pH electrode is inserted into the sleeve, with its bottom end extending to the inner bottom of the guide tube. A sealing ring is provided between the top of the outer wall of the pH electrode and the inner wall of the sleeve. Flange 1 at the right end of the filter cylinder is fixedly connected to flange 2 at the left end of the detection tube by bolts and nuts.

[0007] The bottom center of the filter cartridge is fixedly connected to the drain pipe, and a valve is installed inside the drain pipe. The filter cartridge contains a filter screen, and the outer wall of the filter screen is fixedly connected to the inner wall of the filter cartridge. The bottom of the filter screen is located on the right side of the drain pipe, the top of the filter screen is tilted to the left, and the bottom of the filter screen is directly opposite the upper part of the drain pipe.

[0008] The beneficial effects of this utility model are:

[0009] This invention divides the water flow into low-speed branches through a guide pipe, reducing the flow rate at which the pH electrode contacts to a safe range and preventing high-velocity water from damaging the pH electrode.

[0010] When the device is not in use, the residual liquid in the guide tube forms a closed liquid seal environment, in which the pH electrode can remain continuously immersed without disassembly. Once the filter screen becomes clogged, the filter cartridge can be disassembled and the filter screen cleaned through flange one and flange two. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a cross-sectional view of the detection tube of this utility model;

[0013] Figure 3 yes Figure 2 Cross-sectional view at point AA;

[0014] Figure 4 This is a schematic diagram of the sleeve structure of this utility model.

[0015] The specific reference numerals in all the attached drawings are as follows: 1. Filter cylinder; 2. Drain pipe; 3. Valve; 4. Filter screen; 5. Flange 1; 6. Detection pipe; 7. Flange 2; 8. Sleeve; 9. Flange 3; 10. pH electrode; 11. Sealing ring; 12. Guide pipe; 13. Inlet; 14. Outlet. Detailed Implementation

[0016] like Figure 1-4 As shown: An online pH electrode measurement and protection device includes a detection tube 6 and a pH electrode 10. Flanges 2 and 7 are fixedly connected to both ends of the detection tube 6. A filter cylinder 1 is located at the left end of the detection tube 6. Flanges 1 and 5 are fixedly connected to both ends of the filter cylinder 1. The right flange 5 of the filter cylinder 1 is connected to the left flange 7 of the detection tube 6, thus communicating with the detection tube 6. A sleeve 8 is fixedly connected to the top center of the detection tube 6. A flange 3 and 9 are fixedly connected to the outer wall of the top of the sleeve 8. A guide tube 12 is located inside the detection tube 6. The flow tube 12 is located below the sleeve 8. The bottom end of the flow tube 12 is fixedly connected to the inner bottom wall of the detection tube 6. The top left and right sides of the flow tube 12 are respectively provided with an inlet 13 and an outlet 14 between them and the inner wall of the detection tube 6. The pH electrode 10 is inserted into the sleeve 8. The bottom end of the pH electrode 10 extends to the inner bottom of the flow tube 12. A sealing ring 11 is provided between the top of the outer wall of the pH electrode 10 and the inner wall of the sleeve 8. The right flange 5 of the filter cartridge 1 is fixedly connected to the left flange 7 of the detection tube 6 by bolts and nuts.

[0017] The bottom center of the filter cylinder 1 is fixedly connected to the drain pipe 2. A valve 3 is installed inside the drain pipe 2. The filter cylinder 1 has a filter screen 4. The outer wall of the filter screen 4 is fixedly connected to the inner wall of the filter cylinder 1. The bottom of the filter screen 4 is located on the right side of the drain pipe 2, the top of the filter screen 4 is tilted to the left, and the bottom of the filter screen 4 is directly opposite the upper part of the drain pipe 2.

[0018] The wastewater to be tested, such as flue gas desulfurization liquid and electroplating wastewater, enters from the left side of the filter cylinder 1. The arrow indicates the direction of water flow. After passing through the inclined filter screen 4, large suspended particles such as metal shavings and sediments are intercepted. The filter screen 4 adopts a top left-leaning design, so that impurities naturally slide down to the bottom drain pipe 2 area to avoid blockage.

[0019] The filtered wastewater flows into the detection pipe 6, and changes its flow direction through the diversion structure of the guide pipe 12. The water flows into the interior of the guide pipe 12 from the inlet 13 on the left side of the guide pipe 12.

[0020] A low-speed flow zone is formed inside the guide tube 12, and the detection end of the pH electrode 10 is immersed in this zone. The water eventually flows out slowly from the outlet 14 on the right side.

[0021] The pH electrode 10 is vertically inserted into the bottom of the guide tube 12 through the sleeve 8. The sealing ring 11 ensures that there is no leakage between the sleeve 8 and the pH electrode 10. The pH electrode 10 continuously monitors the pH value in the low-speed water flow.

[0022] Periodically open valve 3 of drain pipe 2 to discharge impurities deposited at the bottom of filter cartridge 1. Since pH electrode 10 is located inside guide pipe 12 and immersed in the liquid within guide pipe 12, pH electrode 10 is always immersed in the liquid. When the device is not in use, the residual liquid in the guide pipe forms a closed liquid seal environment, in which the pH electrode can remain continuously immersed without disassembly. Once filter screen 4 becomes clogged, filter cartridge 1 can be disassembled through flange 5 and flange 7 to clean filter screen 4.

[0023] This utility model only protects the mechanical parts; the functions implemented by the software control part are not within the scope of protection of this utility model.

Claims

1. An on-line pH electrode measuring protection device, comprising a detection tube (6) and a pH electrode (10), both left and right ends of the detection tube (6) are fixedly connected with flanges (7), characterized in that, The left end of the detection tube (6) has a filter cylinder (1), and both the left and right ends of the filter cylinder (1) are fixedly connected to flange one (5). The right end flange one (5) of the filter cylinder (1) is connected to the left end flange two (7) of the detection tube (6). The filter cylinder (1) is connected to the detection tube (6). The top middle part of the detection tube (6) is fixedly connected to the sleeve (8). The top outer wall of the sleeve (8) is fixedly connected to flange three (9). The detection tube (6) has a guide tube (12) inside. The guide tube (12) is located below the sleeve (8). The bottom end of the guide tube (12) is connected to the detection tube. The inner bottom wall of the measuring tube (6) is fixedly connected. The top left and right sides of the guide tube (12) are respectively opened with an inlet (13) and an outlet (14) between the inner wall of the measuring tube (6). The pH electrode (10) is inserted into the sleeve (8). The bottom end of the pH electrode (10) extends to the inner bottom of the guide tube (12). A sealing ring (11) is set between the top of the outer wall of the pH electrode (10) and the inner wall of the sleeve (8). The right flange (5) of the filter cylinder (1) and the left flange (7) of the measuring tube (6) are fixedly connected by bolts and nuts.

2. The online pH electrode measurement and protection device according to claim 1, characterized in that, The bottom center of the filter cylinder (1) is fixedly connected to the drain pipe (2). A valve (3) is installed inside the drain pipe (2). The filter cylinder (1) contains a filter screen (4). The outer wall of the filter screen (4) is fixedly connected to the inner wall of the filter cylinder (1). The bottom of the filter screen (4) is located on the right side of the drain pipe (2). The top of the filter screen (4) is tilted to the left. The bottom of the filter screen (4) is directly opposite the upper part of the drain pipe (2).

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