Cleaning device for electromagnetic reversing valve of lubricating system of continuous casting machine

Abstract

The utility model belongs to mechanical equipment technical field relates to a kind of cleaning device for electromagnetic reversing valve of continuous casting machine lubricating system.The technical scheme includes: oil tank, high pressure pump, electromagnetic reversing valve, electromagnetic reversing valve, to be washed reversing valve and control panel.The oil tank is filled with cleaning oil.The inlet of the high pressure pump is communicated with the oil tank.The P port and T port of the electromagnetic reversing valve are communicated with the outlet of the high pressure pump, the A port of the electromagnetic reversing valve is communicated with the first flushing interface, and the B port of the electromagnetic reversing valve is communicated with the second flushing interface.The return oil tank is communicated with the oil outlet.The to-be-washed reversing valve is respectively communicated with the first flushing interface, the second flushing interface and the oil outlet.The control panel is electrically connected with the electromagnetic reversing valve and the to-be-washed reversing valve.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical equipment technology and relates to a cleaning device for the electromagnetic reversing valve of the lubrication system of a continuous casting machine. Background Technology

[0002] Currently, equipment in various enterprises, such as metallurgical plants, widely utilizes centralized grease lubrication systems. Each system contains a number of solenoid directional valves as core control components. Due to the relatively small grease supply, small valve diameters, and micron-level valve body gaps, coupled with the high viscosity of grease and its strong ability to adhere to solid particles, the solenoid directional valve cores are prone to jamming. Once jammed, the entire system's normal operation is affected, necessitating immediate replacement. These solenoid valves are highly precision and expensive; out-of-line repair and reinstatement yield significant economic benefits. Traditional repair methods involve disassembling and cleaning the valve body, valve core, and all associated parts. However, these traditional cleaning methods have the following drawbacks: Valve body disassembly is difficult: due to the small valve body diameter (0.15-0.3mm), the valve core is relatively precise, there are many internal parts, and the fitting precision is also high. Some parts are not easy to disassemble, and the valve core will be damaged and the repair will fail if you are not careful.

[0003] High maintenance skill requirements: Most on-site maintenance personnel lack professional knowledge of valve bodies, and a series of problems may occur during disassembly, such as damage to internal components, installation errors, and missing parts. The pass rate of solenoid valves after cleaning is usually low (generally around 18%).

[0004] High requirements for the on-site environment: Most cleaning operations are carried out inside the workshop, where the content of dust and other pollutants is high. During disassembly and reassembly, secondary pollution may occur inside the valve body, leading to maintenance failure.

[0005] The workload is large and there are no testing methods: the entire cleaning process of a valve body usually takes more than two hours. In addition, it cannot be guaranteed that the cleaning will be successful on the first try. It must be installed on the equipment and then tested. If the function is not restored, it must be disassembled and cleaned repeatedly. Usually, it takes two people to work together for more than 5-6 hours.

[0006] Cleaning agents are consumed in large quantities and are not environmentally friendly: the cleaning agents used in traditional cleaning operations have some negative impact on human health and the environment, and the large amount of cleaning agents consumed also increases maintenance costs. Utility Model Content

[0007] To overcome the deficiencies in the aforementioned related technologies, this utility model proposes a cleaning device for the electromagnetic reversing valve of the lubrication system of a continuous casting machine.

[0008] To achieve the above technical objectives, this utility model provides a cleaning device for the electromagnetic reversing valve of a continuous casting machine lubrication system. The cleaning device for the electromagnetic reversing valve of the continuous casting machine lubrication system includes: The oil tank is filled with cleaning oil; A high-pressure pump, the inlet of which is connected to the oil tank; The electromagnetic reversing valve has its P port and T port connected to the outlet of the high-pressure pump, its A port connected to the first flushing interface, and its B port connected to the second flushing interface. The return oil tank is connected to the oil drain port; The directional control valve to be cleaned is connected to a first flushing port, a second flushing port, and an oil drain port. The control panel is electrically connected to the solenoid directional valve and the directional valve to be cleaned.

[0009] The electromagnetic reversing valve cleaning device for the continuous casting machine lubrication system also includes: A first ball valve is disposed between the high-pressure pump and the P port of the solenoid directional valve; The second ball valve is located between the high-pressure pump and the T-port of the solenoid directional valve.

[0010] The electromagnetic reversing valve cleaning device for the continuous casting machine lubrication system also includes: A one-way valve, wherein the inlet end of the one-way valve is connected to the outlet of the high-pressure pump, and the outlet end of the one-way valve is connected to the first ball valve and the second ball valve; The electromagnetic relief valve has its inlet end connected to the outlet end of the check valve, and its outlet end connected to the return oil tank.

[0011] The electromagnetic reversing valve cleaning device of the continuous casting machine lubrication system also includes a system main pressure gauge, which is connected to the outlet end of the check valve.

[0012] The cleaning device for the electromagnetic reversing valve of the continuous casting machine lubrication system also includes a system drain pressure gauge, which is connected to the inlet end of the second ball valve.

[0013] The electromagnetic reversing valve cleaning device of the continuous casting machine lubrication system also includes a working pressure gauge for the valve to be cleaned, which is installed on the pipeline between the reversing valve to be cleaned and the return oil tank.

[0014] A return oil filter is also installed on the pipeline between the return oil tank and the reversing valve to be cleaned.

[0015] The beneficial effects of the utility model are as follows: The beneficial effects of this invention are that the grease-cleaning and testing device for electromagnetic directional valves helps reduce equipment maintenance costs, improves the repair efficiency of offline electromagnetic valves, lowers the skill requirements for maintenance personnel, and also reduces the workload of maintenance personnel. The device can also perform valve testing simultaneously with cleaning, ensuring a 100% cleaning success rate.

[0016] This invention significantly improves the efficiency of maintenance personnel in cleaning solenoid valves, greatly reducing the workload and difficulty of cleaning. Typically, cleaning and testing a single valve only requires 10-15 minutes per person. The invention also has lower costs and consumption, significantly reducing equipment maintenance costs. Replacing traditional, highly volatile, and harmful industrial cleaning agents with ordinary hydraulic oil has a positive impact on both the environment and workers. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a diagram of the oil circuit structure of this utility model; Figure 2 This is the solenoid valve cleaning operation panel of this utility model. Detailed Implementation

[0019] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0022] like Figure 1 and Figure 2 As shown, the electromagnetic reversing valve cleaning device of the continuous casting machine lubrication system includes: The oil tank is filled with cleaning oil; A high-pressure pump, the inlet of which is connected to the oil tank; At this location, the P port and T port of the electromagnetic reversing valve are both connected to the outlet of the high-pressure pump, the A port of the electromagnetic reversing valve is connected to the first flushing interface, and the B port of the electromagnetic reversing valve is connected to the second flushing interface. The return oil tank is connected to the oil drain port; The directional control valve to be cleaned is connected to a first flushing port, a second flushing port, and an oil drain port. The control panel is electrically connected to the solenoid directional valve and the directional valve to be cleaned.

[0023] The electromagnetic reversing valve cleaning device for the continuous casting machine lubrication system also includes: A first ball valve is disposed between the high-pressure pump and the P port of the solenoid directional valve; The second ball valve is located between the high-pressure pump and the T-port of the solenoid directional valve.

[0024] The electromagnetic reversing valve cleaning device for the continuous casting machine lubrication system also includes: A one-way valve, wherein the inlet end of the one-way valve is connected to the outlet of the high-pressure pump, and the outlet end of the one-way valve is connected to the first ball valve and the second ball valve; The electromagnetic relief valve has its inlet end connected to the outlet end of the check valve, and its outlet end connected to the return oil tank.

[0025] The electromagnetic reversing valve cleaning device of the continuous casting machine lubrication system also includes a system main pressure gauge, which is connected to the outlet end of the check valve.

[0026] The cleaning device for the electromagnetic reversing valve of the continuous casting machine lubrication system also includes a system drain pressure gauge, which is connected to the inlet end of the second ball valve.

[0027] The electromagnetic reversing valve cleaning device of the continuous casting machine lubrication system also includes a working pressure gauge for the valve to be cleaned, which is installed on the pipeline between the reversing valve to be cleaned and the return oil tank.

[0028] A return oil filter is also installed on the pipeline between the return oil tank and the reversing valve to be cleaned.

[0029] A third ball valve is installed on the pipeline between the return oil filter and the working pressure gauge of the valve to be washed.

[0030] The control panel includes: one cleaning / release button, one emergency stop button, one start button, one stop button, one system reversal button, and a third ball valve for controlling each pipeline.

[0031] The dials of the system drain pressure gauge, the system main pressure gauge, and the working pressure gauge of the valve to be cleaned are located on the control panel.

[0032] The cleaning fluid can be hydraulic oil of different grades, such as 15#-46# (the lower the viscosity, the better the effect).

[0033] The high-pressure pump is equipped with a pilot-operated solenoid relief valve (for regulating system pressure), a two-position two-way solenoid directional valve (for switching operations in the cleaning system), two check valves (to prevent oil backflow and back pressure), the base of the solenoid valve to be cleaned, and a pressure gauge and ball valve on the panel. These components, along with pipe fittings, form the execution part of the entire device, located at the bottom of the control panel.

[0034] The electrical control section includes one rectifier (converting AC 380V to DC 24V), three 24V output points (one for the cleaning solenoid valve, one for the solenoid directional valve, and one for the high-pressure pump solenoid relief valve) connected to a dedicated solenoid valve coil plug, one cleaning / release button (pressing the button provides output voltage to the solenoid valve plug, releasing it cuts off the output voltage), one system reversing button (pressing the reversing button provides continuous output voltage to the solenoid valve plug, pressing it again cuts off the output voltage), one high-pressure pump start button (pressing it starts the high-pressure pump and simultaneously energizes the solenoid relief valve), one high-pressure pump stop button (pressing it stops the high-pressure pump and simultaneously de-energizes all solenoid valve plugs), and one emergency stop button (for emergency pump stoppage in special circumstances). The entire electrical control section is set up according to the above requirements.

[0035] Install the solenoid valve to be cleaned onto the dedicated base according to its working state. Connect the dedicated plug to the solenoid valve and turn on the high-pressure pump power switch. Close the first, second, and third ball valves; the device will then enter standby mode. Press the "System Start" button to start the high-pressure pump. At this point, the high-pressure pump's solenoid relief valve is energized, and the high-pressure pump outputs pressure. Adjust the required system pressure by adjusting the relief valve knob. The setup is now complete.

[0036] Open all three ball valves: the first, second, and third. This initiates the solenoid valve flushing phase. High-pressure oil flows from the inlet to the working port for forward cleaning of the channel. Press and hold the "Clean / Release" button to energize the solenoid valve and stop flushing. Release the button after 3-5 seconds to de-energize the solenoid valve. Repeat this process 5-10 times (ensuring the solenoid valve core moves and removes foreign objects) to complete the forward cleaning of the solenoid valve channel. Activate the "System Reversal" button to initiate the reverse flushing phase. The system inlet and outlet are reversed. Press and hold the "Clean / Release" button again. High-pressure oil flows from the outlet to the working port for reverse cleaning of the channel. Release the button after 3-5 seconds to de-energize the solenoid valve and stop flushing. Repeat this process 5-10 times to complete the bidirectional cleaning of the solenoid valve channel.

[0037] Return the device to its initial state (all solenoid valves de-energized, all ball valves closed), open the first ball valve, and start the system. At this point, pressurized oil flows to the working pipeline. The readings on the working pressure gauge of the valve to be cleaned and the system main pressure gauge should be the same, and the system drain pressure gauge should read zero. Press the "Clean / Release" button. The pressurized oil will then be shut off. The readings on the system drain pressure gauge and the working pressure gauge of the valve to be cleaned should be the same and zero, and the system main pressure gauge should display the system pressure. Repeat this test several times. If the above conditions are met, the solenoid valve has been cleaned successfully. If the pressure gauge readings do not match the above conditions during testing, the cleaning is incomplete. In this case, repeat the cleaning operation until the test is successful. This operation can also be used for offline testing of solenoid directional valves.

[0038] The system cleans the system filter element every 50 solenoid valves and changes the system oil and replaces the filter element every 150 solenoid valves to ensure the cleanliness of the cleaning oil. Example 1

[0039] This embodiment provides a solenoid valve cleaning solution for the lubricating grease system of a continuous casting machine in a steel mill, which is used to solve the problem of cleaning solenoid valves during the maintenance of lubrication equipment. Specific working method: First, install the valve to be cleaned on the base, close all ball valves, start the flushing device, adjust the pressure to 10 - 15 MPa, and open all valves; Second, press and hold the "Clean / Release" button for 3 - 5 s, then release it for 3 - 5 s, and alternate for 5 - 10 times to complete the forward flushing; Third, press the "System Reversal" button to enter the reverse flushing stage. Similarly, press and hold the "Clean / Release" button for 3 - 5 s, then release it for 3 - 5 s, and alternate for 5 - 10 times to complete the reverse cleaning; Fourth, perform detection. Close the second ball valve 3, open the first ball valve, start the system. The readings of the working pressure gauge of the valve to be cleaned and the main pressure gauge of the system should be the same, and the reading of the system oil drain pressure gauge should be zero; Press the "Clean / Release" button. The readings of the system oil drain pressure gauge and the working pressure gauge of the valve to be cleaned should be the same and zero, and the main pressure gauge of the system shows the system pressure. After the detection is completed, the solenoid valve is qualified for cleaning. Otherwise, the system pressure needs to be increased to 20 MPa and the cleaning should be carried out again until it is qualified.

[0040] Embodiment 2 (Basic Embodiment Method) This device can also be used for offline testing and fault detection of ordinary solenoid valves. Specific working method: Fix the solenoid valve to be detected on the base and detect the effectiveness of the solenoid valve by the testing method.

[0041] Embodiment 3 (Variant Embodiment Method)

[0040] Embodiment 2 (Basic Embodiment Method) This device can also be used for offline testing and fault detection of ordinary solenoid valves. Specific working method: Fix the solenoid valve to be detected on the base and detect the effectiveness of the solenoid valve by the testing method.

[0041] Embodiment 3 (Variant Embodiment Method) This device can also replace the base of the solenoid valve to be cleaned with the base of other types of solenoid valves to achieve the cleaning and detection of different types of solenoid valves. Furthermore, it can be applied to other industrial fields to meet the needs of the vast majority of industrial enterprises.

[0042] Embodiment 4 (Variant Embodiment Method) This device is currently a single-station device and can also be expanded into a multi-station device by adding a base plate, pressure gauges, ball valves, control buttons, etc. in parallel to improve the operation ability and efficiency of the device.

[0043] Embodiment 5 (Variant Embodiment Method) This device is currently in a fully manual mode and can also be upgraded to a fully automatic mode through single-chip microcomputer programming to improve the automation level of the device.

[0044] In the description of this specification, specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples.

[0045] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A cleaning device for the electromagnetic reversing valve of a continuous casting machine lubrication system, characterized in that, include: The oil tank is filled with cleaning oil; A high-pressure pump, the inlet of which is connected to the oil tank; The electromagnetic reversing valve has its P port and T port connected to the outlet of the high-pressure pump, its A port connected to the first flushing interface, and its B port connected to the second flushing interface. The return oil tank is connected to the oil drain port; The directional control valve to be cleaned is connected to a first flushing port, a second flushing port, and an oil drain port. The control panel is electrically connected to the solenoid directional valve and the directional valve to be cleaned.

2. The electromagnetic reversing valve cleaning device for the lubrication system of a continuous casting machine according to claim 1, characterized in that, The electromagnetic reversing valve cleaning device for the continuous casting machine lubrication system also includes: A first ball valve is disposed between the high-pressure pump and the P port of the solenoid directional valve; The second ball valve is located between the high-pressure pump and the T-port of the solenoid directional valve.

3. The electromagnetic reversing valve cleaning device for the lubrication system of a continuous casting machine according to claim 2, characterized in that, The electromagnetic reversing valve cleaning device for the continuous casting machine lubrication system also includes: A one-way valve, wherein the inlet end of the one-way valve is connected to the outlet of the high-pressure pump, and the outlet end of the one-way valve is connected to the first ball valve and the second ball valve; The electromagnetic relief valve has its inlet end connected to the outlet end of the check valve, and its outlet end connected to the return oil tank.

4. The electromagnetic reversing valve cleaning device for the lubrication system of a continuous casting machine according to claim 3, characterized in that, The electromagnetic reversing valve cleaning device of the continuous casting machine lubrication system also includes a system main pressure gauge, which is connected to the outlet end of the check valve.

5. The electromagnetic reversing valve cleaning device for the lubrication system of a continuous casting machine according to claim 4, characterized in that, The cleaning device for the electromagnetic reversing valve of the continuous casting machine lubrication system also includes a system drain pressure gauge, which is connected to the inlet end of the second ball valve.

6. The electromagnetic reversing valve cleaning device for the lubrication system of a continuous casting machine according to claim 5, characterized in that, The electromagnetic reversing valve cleaning device of the continuous casting machine lubrication system also includes a working pressure gauge for the valve to be cleaned, which is installed on the pipeline between the reversing valve to be cleaned and the return oil tank.

7. The electromagnetic reversing valve cleaning device for the lubrication system of a continuous casting machine according to claim 6, characterized in that, A return oil filter is also installed on the pipeline between the return oil tank and the reversing valve to be cleaned.

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