A digestion tank reflux control device for water quality online monitoring equipment

Abstract

The utility model is applicable to the technical field of water quality monitoring, and provides a digestion tank reflux control device for water quality online monitoring equipment, comprising: a back plate, a solenoid valve arranged on the back plate, the solenoid valve is communicated with a nine-way valve and a digestion tank through pipelines respectively; a cut-off group arranged between the solenoid valve and the digestion tank, the cut-off group comprises a driving member fixedly connected to the back plate, a moving plate arranged at the output end of the driving member and a top plate arranged above the moving plate, the driving member drives the moving plate to move up and down, the moving plate is provided with a groove, the top plate is provided with a protrusion matching the groove, and the pipe is placed between the moving plate and the top plate; the utility model has the beneficial effect that, through the cut-off group, the pipe between the solenoid valve and the digestion tank can be pushed up and closed at the same time, so as to avoid the reflux of liquid in the digestion tank and improve the measurement accuracy.

Description

Technical Field

[0001] The utility model relates to the technical field of water quality monitoring, in particular to a digestion tank reflux control device for water quality online monitoring equipment. Background Art

[0002] Online water quality monitoring equipment can work automatically and continuously for a long time without supervision according to on-site settings. It is widely used in wastewater discharged from industrial pollution sources, industrial process wastewater, industrial sewage treatment plant sewage, municipal sewage treatment plant sewage and other occasions. At present, the online water quality monitoring equipment currently used cannot meet the requirements when the digestion tank is working. Liquid backflow occurs during heating, resulting in measurement signal errors or large measurement errors, and it is impossible to accurately measure the water samples. Therefore, improvements are urgently needed to solve the problem of controlling reflux.

[0003] A Chinese patent with a patent publication number of CN218725904U discloses a water quality detection device for wet chemical analysis, comprising a housing, a control mainboard and a digestion tank, wherein the digestion tank is vertically arranged inside the housing, an upper high-pressure valve is arranged at the upper end of the digestion tank, and a lower high-pressure valve for introducing air into the digestion tank is arranged at the lower end of the digestion tank, wherein the upper high-pressure valve and the lower high-pressure valve are both electrically connected to the control mainboard, and when working, the control mainboard controls the upper and lower high-pressure valves to be opened simultaneously, and the lower high-pressure valve draws a water sample liquid to be tested into the digestion tank, and then the lower high-pressure valve fills air into the digestion tank, and when the air is filled from bottom to top, bubbles from bottom to top are generated, thereby stirring the liquid in the digestion tank, so that the water sample liquid and the strong acid / strong base oxidant are fully mixed, and then the lower high-pressure valve is closed, and then the control mainboard controls the heating wire to be energized to heat the water sample liquid in the digestion tank to the corresponding reaction temperature, so that the water sample liquid in the digestion tank fully reacts; during use of the above-mentioned water quality monitoring device, when the digestion tank is heated, a backflow problem is prone to occur, which affects the measurement result.

[0004] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Utility Model Content

[0005] In view of the above-mentioned defects, the purpose of the utility model is to provide a digestion tank reflux control device for water quality online monitoring equipment, which can avoid the reflux of liquid in the digestion tank and improve the measurement accuracy.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a digestion tank reflux control device for water quality online monitoring equipment, comprising: a back plate, a solenoid valve arranged on the back plate, the solenoid valve is connected to a nine-way valve and a digestion tank through pipelines respectively; a cut-off group is arranged between the solenoid valve and the digestion tank, the cut-off group comprises a driving member fixedly connected to the back plate, a movable plate arranged at the output end of the driving member and a top plate arranged above the movable plate, the driving member drives the movable plate to move up and down, the movable plate is provided with a groove, the top plate is provided with a protrusion matching the groove, and the pipeline is placed between the movable plate and the top plate.

[0007] According to the digestion tank reflux control device for online water quality monitoring equipment of the utility model, the driving member is configured as a telescopic member, a gear rod is provided at the output end of the telescopic member, the gear rod is meshed with a gear, and the gear is fixed to the rotating shaft.

[0008] According to the digestion tank reflux control device for online water quality monitoring equipment of the utility model, a cam is fixedly connected to the other end of the rotating shaft, and the cam abuts against the moving plate.

[0009] According to the digestion tank reflux control device for water quality online monitoring equipment of the utility model, the top plate is fixedly connected with a vertical rod, and the movable plate is slidably connected to the vertical rod.

[0010] According to the digestion tank reflux control device for water quality online monitoring equipment of the utility model, the outer sleeve of the vertical rod is provided with an elastic member, and the elastic member is arranged above the movable plate.

[0011] According to the digestion tank reflux control device for water quality online monitoring equipment of the utility model, the rotating shaft is rotatably connected to the back plate.

[0012] The utility model provides a digestion tank reflux control device for water quality online monitoring equipment, comprising: a back plate, a solenoid valve arranged on the back plate, the solenoid valve is respectively connected with a nine-way valve and a digestion tank through a pipeline; a cut-off group arranged between the solenoid valve and the digestion tank, the cut-off group comprises a driving member fixedly connected to the back plate, a moving plate arranged at the output end of the driving member and a top plate arranged above the moving plate, the driving member drives the moving plate to move up and down, the moving plate is provided with a groove, the top plate is provided with a protrusion matching the groove, the pipeline is placed Between the movable plate and the top plate; the beneficial effect of the utility model is that, through the flow cut-off group, the pipeline between the solenoid valve and the digestion tank can be pushed up and the flow of the liquid in the pipeline can be controlled at the same time, and when the solenoid valve works abnormally, the pipeline can be closed to avoid the backflow of liquid in the digestion tank and improve the measurement accuracy; at the same time, when the solenoid valve of the utility model is not energized, the solenoid valve is in a normally open state to ensure that the reagents, standard solutions and samples flow into the digestion tank normally. When it is energized, the solenoid valve is in a closed state, and the digestion tank is heated during operation, which can effectively prevent the backflow of liquid in the digestion tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the structure of the current interrupter group of the utility model;

[0015] Figure 3 This utility model Figure 2 A side view structural schematic diagram of;

[0016] In the figure, 1-back plate, 11-vertical rod, 12-elastic member, 2-nine-way valve, 3-solenoid valve, 4-digestion tank, 5-pipeline, 6-telescopic member, 61-gear rod, 7-rotating shaft, 71-cam, 72-gear, 8-movable plate, 81-groove, 9-top plate, 91-protrusion. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the utility model more clearly understood, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] See also Figures 1 to 3 The utility model provides a digestion tank reflux control device for an online water quality monitoring device, which comprises: a back plate 1, a solenoid valve 3 arranged on the back plate 1, the solenoid valve 3 is respectively connected with a nine-way valve 2 and a digestion tank 4 through a pipeline 5; a cut-off group arranged between the solenoid valve 3 and the digestion tank 4, the cut-off group comprises a driving member fixedly connected to the back plate 1, a moving plate 8 arranged at the output end of the driving member, and a top plate 9 arranged above the moving plate 8, the driving member drives the moving plate 8 to move up and down, the moving plate 8 is provided with a groove 81, and the top plate 9 is provided with a groove matching the groove 81. The pipeline 5 is placed between the movable plate 8 and the top plate 9; the beneficial effect of the utility model is that the pipeline 5 between the electromagnetic valve 3 and the digestion tank 4 can be pushed up at a high place through the interruption group, and the flow rate of the liquid in the pipeline 5 can be controlled at the same time, and when the electromagnetic valve 3 works abnormally, the pipeline 5 can be closed to avoid the backflow of the liquid in the digestion tank 4 and improve the measurement accuracy; at the same time, when the electromagnetic valve 3 of the utility model is not energized, the electromagnetic valve 3 is in a normally open state to ensure that the reagents, standard solutions and samples flow into the digestion tank 4 normally. When it is energized, the electromagnetic valve 3 is in a closed state, and the digestion tank 4 is heated during operation, which can effectively prevent the backflow of the liquid in the digestion tank 4.

[0019] See also Figures 1 to 3 Preferably, the driving member of the utility model is set as a telescopic member 6, and the output end of the telescopic member 6 is provided with a gear rod 61, the gear rod 61 is engaged with a gear 72, the gear 72 is fixed to the rotating shaft 7, and the rotating shaft 7 is rotatably connected to the back plate 1;

[0020] During the specific implementation process: the solenoid valve 3 is installed between the nine-way valve 2 and the digestion tank 4. The solenoid valve 3 adopts a PFA anti-corrosion high-pressure solenoid valve, and threaded inverted taper wire joints are installed at the inlet and outlet of the solenoid valve 3 respectively. At the same time, it is connected to the nine-way valve 2 and the digestion tank 4 through a pipeline 5, wherein the pipeline 5 is set to a 1 / 8 polytetrafluoroethylene tube. The power supply of the solenoid valve 3 is connected in parallel with the power supply of the digestion tank 4 to ensure normal operation.

[0021] See also Figures 1 to 3 In addition, a cam 71 is fixedly connected to the other end of the rotating shaft 7 of the utility model, and the cam 71 abuts against the moving plate 8. When the cam 71 abuts against the moving plate 8, the protrusion 91 on the top plate 9 is arranged in the groove 81 of the moving plate 8, squeezing the pipeline 5 to control the flow of the pipeline 5.

[0022] See also Figures 1 to 3 Furthermore, the top plate 9 of the utility model is fixedly connected with a vertical rod 11, and the movable plate 8 is slidably connected to the vertical rod 11 to ensure that the movable plate 8 moves stably.

[0023] See also Figures 1 to 3 Better yet, the vertical rod 11 of the utility model is provided with an elastic member 12 on its outer sleeve, and the elastic member 12 is arranged above the movable plate 8 and can drive the movable plate 8 to reset.

[0024] Working principle: start the telescopic member 6, which is set as a hydraulic cylinder. The telescopic member 6 drives the gear rod 61 to move, and the gear rod 61 drives the gear 72 to rotate. The gear 72 drives the cam 71 to rotate by rotating. During the rotation of the cam 71, the movable plate 8 is lifted to ensure that the protrusion 91 on the top plate 9 is set in the groove 81, and the flow of the pipeline 5 between the top plate 9 and the movable plate 8 is controlled, wherein the protrusion 91 is set to a silicone material to avoid squeezing the pipeline 5; when the solenoid valve 3 cannot work normally, the telescopic member 6 controls the gear rod 72 to move, and controls the highest diameter of the cam 71 to abut against the movable plate 8, so as to close the pipeline 5 and play a backup flow interruption role.

[0025] In summary, the utility model provides a digestion tank reflux control device for water quality online monitoring equipment, comprising: a back plate, a solenoid valve arranged on the back plate, the solenoid valve is communicated with the nine-way valve and the digestion tank through pipelines; a cut-off group arranged between the solenoid valve and the digestion tank, the cut-off group comprises a driving member fixedly connected to the back plate, a moving plate arranged at the output end of the driving member and a top plate arranged above the moving plate, the driving member drives the moving plate to move up and down, the moving plate is provided with a groove, the top plate is provided with a protrusion matching the groove, and the pipe The pipeline is placed between the moving plate and the top plate; the beneficial effect of the utility model is that the pipeline between the solenoid valve and the digestion tank can be pushed up at a high place through the flow cut-off group while controlling the flow of the liquid in the pipeline, and when the solenoid valve works abnormally, the pipeline can be closed to avoid the backflow of liquid in the digestion tank and improve the measurement accuracy; at the same time, when the solenoid valve of the utility model is not energized, the solenoid valve is in a normally open state to ensure that the reagents, standard solutions and samples flow into the digestion tank normally; when it is energized, the solenoid valve is in a closed state, the digestion tank is heated during operation, and the backflow of liquid in the digestion tank can be effectively prevented.

[0026] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, technicians familiar with the field can make various corresponding changes and deformations based on the present invention, but these corresponding changes and deformations should all fall within the scope of protection of the claims attached to the present invention.

Claims

1. A digestion tank reflux control device for water quality online monitoring equipment, characterized in that: include: A back plate, and a solenoid valve disposed on the back plate, wherein the solenoid valve is respectively connected to the nine-way valve and the digestion tank through pipelines; A cut-off group is arranged between the solenoid valve and the digestion tank, and the cut-off group includes a driving member fixed to the back plate, a moving plate arranged at the output end of the driving member, and a top plate arranged above the moving plate. The driving member drives the moving plate to move up and down, the moving plate is provided with a groove, the top plate is provided with a protrusion matching the groove, and the pipeline is placed between the moving plate and the top plate.

2. The digestion tank reflux control device for water quality online monitoring equipment according to claim 1, characterized in that: The driving member is configured as a telescopic member, and a gear rod is disposed at an output end of the telescopic member. The gear rod is meshed with a gear, and the gear is fixed to a rotating shaft.

3. The digestion tank reflux control device for water quality online monitoring equipment according to claim 2, characterized in that: The other end of the rotating shaft is fixedly connected with a cam, and the cam abuts against the moving plate.

4. The digestion tank reflux control device for water quality online monitoring equipment according to claim 1, characterized in that: The top plate is fixedly connected with a vertical rod, and the movable plate is slidably connected to the vertical rod.

5. The digestion tank reflux control device for water quality online monitoring equipment according to claim 4, characterized in that: The outer sleeve of the vertical rod is provided with an elastic member, and the elastic member is arranged above the moving plate.

6. The digestion tank reflux control device for water quality online monitoring equipment according to claim 2, characterized in that: The rotating shaft is rotatably connected to the back plate.

Images