A flushing device for liquid level switch electrode

Abstract

The utility model is a flushing device for a liquid level switch electrode, comprising a liquid level switch provided with a cable interface, a water ring sleeve provided on the outer periphery of the electrode of the liquid level switch, the water ring sleeve being a three-stage step structure, comprising a liquid level switch connection section and a processing equipment connection section, the inner diameter of the inner cavity of the water ring sleeve at the connection with the liquid level switch matches the outer diameter of the liquid level switch installation section, and the remaining part is a flow channel hole matching the size of the electrode, a mounting hole for installing a ferrule joint is also provided on one side of the electrode on the liquid level switch connection section of the water ring sleeve, and is connected with the flow channel hole of the water ring sleeve, the ferrule joint is provided with a water inlet pipe interface, the flow channel hole of the water ring sleeve is clearance-matched with the electrode of the liquid level switch, and the outlet of the flow channel hole is set as a trumpet with a small inside and a large outside. Hot water flows into the flow channel hole of the water ring sleeve through the water inlet pipe connected to the trumpet joint, and flows out from the trumpet mouth to flush the end of the electrode of the liquid level switch.

Description

Technical Field

[0001] The utility model relates to a flushing structure of a liquid level switch, in particular to a flushing device for a liquid level switch electrode, which is used for flushing the liquid level switch electrode in a restaurant kitchen waste treatment system. Background Art

[0002] As people's living standards and environmental awareness improve, marine protection has higher and higher requirements for the discharge of ship food waste. Ship food waste treatment systems have emerged. In deep sea areas, food waste is allowed to be dumped or discharged, but it is not allowed to be dumped in shallow sea areas and must be treated before it can be discharged. In coastal areas or docks, it cannot be discharged and must be treated before being docked or stored before being discharged in specified areas.

[0003] During the treatment or storage of food waste, it is necessary to measure or control the liquid level changes in real time for tanks and other processing equipment or storage containers. There are many switches for measuring liquid levels, such as float type liquid level switches, electrode type liquid level switches, tuning fork type liquid level switches, etc. These liquid level switches are not a big problem when used in relatively clean liquid media. However, when used for crushed food waste sewage, since the sewage contains a high concentration of solid substances, especially fiber solids that have not been completely crushed, they have a relatively large volume and the length of the solids can reach several millimeters or more. At the same time, the food waste also contains fat substances. These solids will wrap around the liquid level switch electrode, causing control and measurement errors of the liquid level switch. This can only be solved by frequently manually checking and removing the liquid level switch to clean the electrode. This will inevitably affect the normal operation of the food waste treatment system and increase maintenance costs and labor load. Summary of the invention

[0004] The utility model aims to solve the problems existing in the prior art and provides a flushing device for liquid level switch electrodes, which has reasonable design, compact structure, and is easy to install and use. The flushing work of the liquid level switch electrodes can be performed without stopping or disassembling, thereby ensuring the normal operation of the restaurant kitchen waste treatment system.

[0005] The utility model is implemented as follows: a flushing device for a liquid level switch electrode, characterized in that: it includes a liquid level switch provided with a cable interface, a water ring sleeve is provided on the outer periphery of the electrode of the liquid level switch, the water ring sleeve is a three-section step structure, including a liquid level switch connecting section and a processing equipment connecting section, the inner diameter of the water ring sleeve inner cavity at the connection with the liquid level switch matches the outer diameter of the liquid level switch installation section, and the remaining part is a flow channel hole matching the size of the electrode, a mounting hole for installing a ferrule joint is also opened on one side of the electrode on the liquid level switch connecting section of the water ring sleeve, and is connected to the flow channel hole of the water ring sleeve, and the ferrule joint is provided with a water inlet pipe interface.

[0006] The through hole side wall where the water ring sleeve is connected to the liquid level switch is provided with an internal thread for connection. The processing equipment connection section of the water ring sleeve is provided with an external thread for connecting the processing equipment. The mounting hole of the ferrule joint is provided with an internal thread.

[0007] The flow channel hole of the water ring sleeve and the electrode of the liquid level switch are clearance-matched, and the outlet of the flow channel hole is arranged in a trumpet shape with a small inside and a large outside.

[0008] In order to avoid the influence of the measurement results when flushing the liquid level switch electrode, the control system of the food waste treatment system must shield the electrode measurement function when starting the automatic flushing of the liquid level switch electrode, and then delay for several seconds to cancel the shielding after the flushing work stops, and restore the measurement function of the liquid level switch, so that the measurement results of the liquid level switch are more reliable and the operation is more accurate. The delay time can be set in the control system of the food waste treatment system according to the actual situation.

[0009] The beneficial effect of the utility model is that the utility model can realize online flushing of the liquid level switch electrode by adding a flushing device at the position of the liquid level switch electrode in cooperation with the control system of the restaurant kitchen waste treatment system, thereby ensuring the safe operation of the restaurant kitchen waste treatment system and improving the treatment efficiency of the restaurant kitchen waste treatment system.

[0010] During the operation of the food waste treatment system, the liquid level needs to be measured and controlled in real time. The food waste treatment system does not work long every day and is an intermittent working system. Therefore, advance prediction can be made through the control system of the food waste treatment system. Before and after work every day, hot water is introduced through the water inlet pipe interface to automatically flush the liquid level switch electrode for several seconds (the flushing time can be set in the control system of the food waste treatment system according to actual conditions such as usage occasions and sewage conditions).

[0011] During the operation of the restaurant kitchen waste treatment system, the control system of the restaurant kitchen waste treatment system determines that the liquid level switch electrode is abnormal, and can immediately start the automatic flushing of the liquid level switch electrode. The abnormal situation of the liquid level switch electrode includes finding that the high liquid level switch has a signal but the low liquid level switch has no signal, indicating that the corresponding liquid level switch electrode has an abnormality; finding that the low liquid level switch does not act beyond the preset action time during discharge, indicating an abnormality, etc.

[0012] The utility model solves the problem of monitoring and controlling the liquid level in application occasions such as a restaurant kitchen waste treatment system, and ensures the reliable operation of the restaurant kitchen waste treatment system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model.

[0014] Figure 2It is a partial cross-sectional view of the utility model.

[0015] Figure 3 It is a cross-sectional view of the water ring casing of the utility model.

[0016] In the figure: 11, liquid level switch; 12, water ring sleeve; 13, ferrule joint; 14, cable interface; 15, water inlet pipe interface; 21, pipe thread section 1; 22, pipe thread section 2; 23, pipe thread section 3; 24, flow channel hole; 25, bell mouth. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings and specific implementation cases.

[0018] According to the attached Figure 1 ~Attached Figure 3 The utility model is a flushing device for a liquid level switch electrode, comprising a liquid level switch 11 provided with a cable interface 14, a water ring sleeve 12 is provided on the outer periphery of the electrode of the liquid level switch 11, and the water ring sleeve 12 is a three-stage step structure, including a liquid level switch 11 connection section and a processing equipment connection section, the inner diameter of the water ring sleeve 12 at the connection with the liquid level switch 11 matches the outer diameter of the liquid level switch 11 installation section, and the remaining part is a flow channel hole 24 matching the size of the electrode, wherein the side wall of the through hole at the connection with the liquid level switch 11 is provided with an internal threaded pipe thread for connection, which is a pipe thread section 21, and the processing equipment connection section The connecting section is provided with an external pipe thread, which is the pipe thread section three 23, and is used to install the liquid level switch with a flushing device on the cylinder of the processing equipment. A mounting hole for installing a ferrule joint 13 is also provided on the electrode side of the connecting section of the liquid level switch 11 of the water ring sleeve 12, and is connected with the flow channel hole 24 of the water ring sleeve 12. The mounting hole of the ferrule joint 13 is provided with an internal pipe thread, which is the pipe thread section two 22. The ferrule joint 13 is provided with a water inlet pipe interface 15. The flow channel hole 24 and the electrode are clearance-matched. The outlet of the flow channel hole 24 of the water ring sleeve 12 is set to a trumpet mouth 25 with a small inside and a large outside, which is used to drain hot water for flushing the electrode.

[0019] The working principle and working process of the utility model are as follows:

[0020] After the control valve is opened by the control system of the processing equipment, hot water with a certain pressure flows into the flow channel hole 24 of the water ring sleeve 12 through the water inlet pipe connected to the ferrule joint 13, and flows out from the bell mouth 25. The hot water flows through the annular space formed by the water ring sleeve 12 and the electrode of the liquid level switch 11, flushes the electrode end of the liquid level switch 11, and removes the adhesion of medium dirt around the electrode, so as to ensure the lasting accuracy and reliability of electrode detection.

[0021] The design purpose of the trumpet-shaped shape with a small inside and a large outside is, firstly, to make the water flow direction more reasonable, which not only rinses the end of the electrode, but also rinses the attached solid matter and grease of kitchen waste; secondly, it reduces the adhesion of solid matter and grease during the measurement process, which can extend the reliable working time of the liquid level switch 11 and reduce the frequency of hot water flushing.

Claims

1. A flushing device for a liquid level switch electrode, characterized in that: It comprises a liquid level switch provided with a cable interface, wherein a water ring sleeve is provided on the periphery of the electrode of the liquid level switch, the water ring sleeve is a three-section stepped structure, comprising a liquid level switch connecting section and a processing equipment connecting section, the inner diameter of the inner cavity of the water ring sleeve at the connection with the liquid level switch matches the outer diameter of the liquid level switch installation section, and the remaining part is a flow channel hole matching the size of the electrode, and an installation hole for installing a ferrule joint is also provided on one side of the electrode on the liquid level switch connecting section of the water ring sleeve, and is connected to the flow channel hole of the water ring sleeve, and the ferrule joint is provided with a water inlet pipe interface.

2. A flushing device for a liquid level switch electrode according to claim 1, characterized in that: The side wall of the through hole at the connection between the water ring sleeve and the liquid level switch is provided with an internal thread for connection.

3. A flushing device for a liquid level switch electrode according to claim 1, characterized in that: The processing equipment connection section of the water ring casing is provided with an external pipe thread for connecting the processing equipment.

4. A flushing device for a liquid level switch electrode according to claim 1, characterized in that: The mounting hole of the ferrule joint is provided with an internal pipe thread.

5. The flushing device for liquid level switch electrode according to claim 1, characterized in that: The flow channel hole of the water ring sleeve and the electrode of the liquid level switch are clearance-matched, and the outlet of the flow channel hole is arranged in a trumpet shape with a small inside and a large outside.

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