An electromagnetic valve

Abstract

The application belongs to the technical field of electromagnetic valves, and particularly relates to an electromagnetic valve, which comprises a valve body, an inlet and three outlets arranged on the valve body, a filter chamber arranged in the inlet, a filter screen arranged in the filter chamber, a blowdown port arranged at the bottom of the filter chamber, a sealing cover arranged at the bottom of the blowdown port, a hexagonal block fixedly arranged at the bottom of the sealing cover, a sealing gasket arranged at the top of the valve body, and a valve cover arranged at the top of the sealing gasket. The filter chamber and the filter screen arranged in the inlet can effectively filter the flowing fluid, intercept the impurities in the fluid, avoid the impurities from entering the valve core assembly to cause the valve core to be stuck and worn, protect the valve core from the root, and prolong the overall service life of the electromagnetic valve. Meanwhile, the blowdown port and the sealing cover are arranged at the bottom of the filter chamber, the impurities accumulated for a long time can be directly discharged through the blowdown port, the entire valve body does not need to be disassembled, and maintenance is convenient.

Description

Technical Field

[0001] This invention relates to the field of solenoid valve technology, and more particularly to a solenoid valve. Background Technology

[0002] Solenoid valves, as core components in the field of fluid control, are widely used in various scenarios such as pipeline transportation, equipment control, farmland irrigation, and garden watering. Their main function is to control the opening and closing of the valve core through electromagnetic force, thereby achieving the on / off regulation of fluids. However, existing solenoid valves have many shortcomings in practical use and cannot meet diverse application needs: First, most solenoid valves do not have a built-in filter structure, allowing impurities in the fluid to easily enter the valve core, causing it to jam, wear, and shorten the valve's lifespan. Moreover, accumulated impurities are difficult to clean, requiring disassembly of the entire valve body for maintenance, which is cumbersome. Second, traditional solenoid valves are mostly one-in-one-out or one-in-two-out structures. When multiple fluids need to be controlled, additional tee fittings are required, which not only increases equipment costs but also increases installation difficulty and pipeline space occupation, reducing installation efficiency. Third, the drainage structure of solenoid valves is poorly designed, either lacking a dedicated drainage port or having an inconvenient drainage port sealing cover to remove, lacking a convenient leverage structure, resulting in time-consuming and laborious impurity cleaning.

[0003] Therefore, we propose a solenoid valve to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a solenoid valve.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An electromagnetic valve includes a valve body and an inlet and three outlets disposed on the valve body. The inlet has a filter chamber with a filter screen inside. The bottom of the filter chamber has a drain port with a sealing cover at the bottom. A hexagonal block is fixedly installed at the bottom of the sealing cover. The top of the valve body has a sealing gasket, and the top of the sealing gasket has a valve cover. The valve cover has a valve core assembly, and an electromagnetic coil housing is disposed on the outside of the valve core assembly.

[0006] Preferably, the filter chamber is provided with two sets of limiting blocks, which are used to position the filter screen.

[0007] Preferably, the bottom of the hexagonal block is provided with a groove, and a lever block is slidably installed in the groove, so that the hexagonal block can be rotated by lever block.

[0008] Preferably, a limiting groove is formed on the side wall of the groove, and a limiting block is slidably installed in the limiting groove. One side of the limiting block is fixedly connected to the lever block.

[0009] Preferably, a magnet is fixedly installed on one side of the inner wall of the limiting groove, and an iron sheet is fixedly installed on one side of the limiting block, with the magnet used to attract the iron sheet.

[0010] Preferably, the valve core assembly includes a valve core body and a return spring. The return spring is sleeved on the outside of the valve core body, with one end of the return spring abutting against the inner wall of the valve cover and the other end abutting against the bottom of the valve core body, for automatic reset of the valve core body.

[0011] Preferably, the inner wall of the electromagnetic coil housing is provided with a heat insulation layer made of ceramic fiber material, which is used to isolate the heat generated when the electromagnetic coil is working, and to prevent the heat from being conducted to the valve body and affecting the sealing performance.

[0012] Preferably, the valve body has a mounting ear on its outer side, and a threaded hole is provided on the mounting ear. A fixing bolt is fitted into the threaded hole to fix the solenoid valve to the mounting surface. The mounting ear and the valve body are integrally formed.

[0013] Compared with the prior art, the advantages of the present invention are as follows: This solution effectively filters the incoming fluid by installing a filter chamber and filter screen inside the inlet, intercepting impurities and preventing them from entering the valve core assembly, which could cause valve core jamming and wear. This protects the valve core from the source and extends the overall service life of the solenoid valve. Simultaneously, a drain port and sealing cover are located at the bottom of the filter chamber, allowing accumulated impurities to be discharged directly without disassembling the entire valve body, simplifying maintenance. The hexagonal block at the bottom of the sealing cover, along with a retractable lever block, facilitates quick disassembly and installation of the sealing cover by rotating the hexagonal block. When not in use, the lever block can be stored in a recessed area to prevent it from being exposed and damaged by impact. The combination of the limiting groove, limiting block, and magnet ensures the stable position of the lever block after storage, preventing it from falling off. The valve body is equipped with one inlet and three outlets, enabling multi-channel fluid control with one inlet and three outlets. No additional T-fitting is required, which not only saves on fitting procurement costs but also simplifies the installation process and reduces the space occupied by pipelines. It is suitable for various scenarios that require multi-channel fluid control, such as pipelines, equipment, machinery modification, farmland irrigation, and garden orchard watering, making it highly versatile. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of an electromagnetic valve proposed in this invention; Figure 2 This is a schematic diagram of the overall structure of an electromagnetic valve proposed in this invention; Figure 3 This is a schematic diagram of the structure of an electromagnetic valve proposed in this invention after removing the sealing cap; Figure 4This is a schematic diagram of the structure of a sealing cover, hexagonal block, limiting block, levering block, and magnet of an electromagnetic valve proposed in this invention.

[0015] In the diagram: 1. Electromagnetic coil housing; 2. Valve core assembly; 3. Valve cover; 4. Sealing gasket; 5. Valve body; 6. Inlet; 7. Outlet; 8. Drain outlet; 9. Filter screen; 10. Sealing cover; 11. Hexagonal block; 12. Limiting block; 13. Groove; 14. Support block; 15. Limiting groove; 16. Limiting block; 17. Magnet. Detailed Implementation

[0016] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this embodiment, and not all embodiments.

[0017] Example 1 Reference Figures 1-4 A solenoid valve includes a valve body 5 and an inlet 6 and three outlets 7 disposed on the valve body 5. The inlet 6 is provided with a filter chamber, the filter chamber is provided with a filter screen 9, the bottom of the filter chamber is provided with a drain port 8, the bottom of the drain port 8 is provided with a sealing cover 10, the bottom of the sealing cover 10 is fixedly installed with a hexagonal block 11, the top of the valve body 5 is provided with a sealing gasket 4, the top of the sealing gasket 4 is provided with a valve cover 3, the valve cover 3 is provided with a valve core assembly 2, and the outer side of the valve core assembly 2 is provided with an electromagnetic coil housing 1.

[0018] In this embodiment, two sets of limiting blocks 12 are provided in the filter chamber, and the two sets of limiting blocks 12 are used to position the filter screen 9.

[0019] In this embodiment, the bottom of the hexagonal block 11 is provided with a groove 13, and a lever block 14 is slidably installed in the groove 13, so that the hexagonal block 11 can be rotated by lever block 14.

[0020] In this embodiment, a limiting groove 15 is provided on the side wall of the groove 13, and a limiting block 16 is slidably installed in the limiting groove 15. One side of the limiting block 16 is fixedly connected to the lever block 14.

[0021] In this embodiment, a magnet 17 is fixedly installed on one side of the inner wall of the limiting groove 15, and an iron sheet is fixedly installed on one side of the limiting block 16. The magnet 17 is used to attract the iron sheet.

[0022] In this embodiment, the valve core assembly 2 includes a valve core body and a reset spring. The reset spring is sleeved on the outside of the valve core body, and one end of the reset spring abuts against the inner wall of the valve cover 3, and the other end abuts against the bottom of the valve core body, for automatic reset of the valve core body.

[0023] In this embodiment, the inner wall of the electromagnetic coil housing 1 is provided with a heat insulation layer, which is made of ceramic fiber material and is used to isolate the heat generated when the electromagnetic coil is working, so as to prevent the heat from being conducted to the valve body 5 and affecting the sealing performance.

[0024] In this embodiment, the valve body 5 is provided with a mounting ear on the outside, and a threaded hole is provided on the mounting ear. A fixing bolt is fitted into the threaded hole to fix the solenoid valve to the mounting surface. The mounting ear and the valve body 5 are integrally formed.

[0025] In this embodiment, the solenoid valve of this solution has a built-in filter screen 9, which can filter impurities in the water. It can be drained at any time, increasing the service life of the solenoid valve. The solenoid valve is a one-inlet, three-outlet valve, which can save costs for customers and is easy and quick to install without the need to connect an additional tee. The solenoid valve can control the opening and closing of three water circuits. The solenoid valve is suitable for pipelines, equipment, machinery modification, farmland irrigation automation, garden and orchard watering, and pipeline steam. The solenoid valve can be used with water, oil, steam, and high temperature.

[0026] Working principle: The fluid flows into the filter chamber inside the valve body 5 from the inlet 6. It first passes through the filter screen 9 to filter impurities. Two sets of limit blocks 12 position and fix the filter screen 9 to ensure stable filtration position and prevent the filter screen from shifting.

[0027] The filtered clean fluid enters the internal flow channel of the valve body 5 and waits for the valve core assembly 2 to control the opening and closing. Impurities accumulated at the bottom of the filter chamber over a long period of use can be discharged through the drain port 8. Under normal conditions, the sealing cover 10 seals the drain port 8 to prevent leakage.

[0028] When disassembling and draining, the hexagonal block 11 is rotated by the lever block 14, and the sealing cover 10 can be unscrewed to complete the draining. After installation and resetting, the magnet 17 attracts the iron piece on the limiting block 16, so that the lever block 14 is stored in the groove 13. The limiting groove 15 cooperates with the limiting block 16 to restrict the sliding trajectory of the lever block 14 and prevent it from falling off.

[0029] When energized, the coil inside the electromagnetic coil housing 1 generates electromagnetic force, which drives the valve core body in the valve core assembly 2 to move, opening the internal flow channel of the valve body 5. The fluid flows out from the three outlets 7 on the valve body 5, realizing multi-channel fluid control with one inlet and three outlets.

[0030] When the power is off, the electromagnetic force disappears, and the reset spring in the valve core assembly 2 pushes the valve core body to reset, blocking the flow path and closing the solenoid valve; the heat generated by the operation of the electromagnetic coil is isolated by the ceramic fiber heat insulation layer on the inner wall of the electromagnetic coil housing 1, preventing the heat from being conducted to the valve body 5 and affecting the sealing performance.

[0031] Example 2 The difference from Embodiment 1 is that a small pressure sensor is embedded inside the filter chamber. The pressure sensor is electrically connected to the control circuit of the solenoid valve to monitor the pressure difference between the inlet and outlet of the filter chamber in real time. When the filter screen 9 becomes clogged due to impurities, the pressure difference between the inlet and outlet will exceed a preset threshold. At this time, the pressure sensor will trigger a warning signal, which will be issued through the indicator light of the control circuit or an external alarm device. At the same time, it can also control the on / off frequency of the solenoid coil housing 1 to briefly close the solenoid valve, avoiding excessive fluid pressure and valve body damage caused by filter screen clogging. It can also remind personnel to clean or replace the filter screen in time, solving the pain point of traditional solenoid valves that cannot judge the filter screen clogging status in real time and are prone to equipment failure due to clogging. In addition, the pressure sensor adopts a waterproof and corrosion-resistant design, which is compatible with various media such as water, oil, and steam. It is compatible with the sealing structure of the valve body 5 and does not affect the overall sealing performance. Moreover, it is installed on the side wall of the filter chamber, which does not interfere with fluid flow and the disassembly and maintenance of the filter screen.

[0032] The rest is the same as in Example 1.

[0033] The above description is only a preferred embodiment of this practice, but the scope of protection of this embodiment is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in this embodiment, based on the technical solution and inventive concept of this embodiment, should be covered within the scope of protection of this embodiment.

Claims

1. A solenoid valve, characterized in that, The valve body (5) includes an inlet (6) and three outlets (7) on the valve body (5). The inlet (6) is equipped with a filter chamber, and the filter chamber is equipped with a filter screen (9). The bottom of the filter chamber is equipped with a drain port (8). The bottom of the drain port (8) is equipped with a sealing cover (10). The bottom of the sealing cover (10) is fixedly installed with a hexagonal block (11). The top of the valve body (5) is equipped with a sealing gasket (4). The top of the sealing gasket (4) is equipped with a valve cover (3). The valve cover (3) is equipped with a valve core assembly (2). The outer side of the valve core assembly (2) is equipped with an electromagnetic coil housing (1).

2. The solenoid valve according to claim 1, characterized in that, The filter chamber is provided with two sets of limiting blocks (12), which are used to position the filter screen (9).

3. A solenoid valve according to claim 2, characterized in that, The bottom of the hexagonal block (11) is provided with a groove (13), and a lever block (14) is slidably installed in the groove (13) to rotate the hexagonal block (11).

4. A solenoid valve according to claim 3, characterized in that, The side wall of the groove (13) is provided with a limiting groove (15), and a limiting block (16) is slidably installed in the limiting groove (15). One side of the limiting block (16) is fixedly connected to the lever block (14).

5. A solenoid valve according to claim 4, characterized in that, A magnet (17) is fixedly installed on one side of the inner wall of the limiting groove (15), and an iron sheet is fixedly installed on one side of the limiting block (16). The magnet (17) is used to attract the iron sheet.

6. A solenoid valve according to claim 5, characterized in that, The valve core assembly (2) includes a valve core body and a reset spring. The reset spring is sleeved on the outside of the valve core body, and one end of the reset spring abuts against the inner wall of the valve cover (3) and the other end abuts against the bottom of the valve core body, for automatic reset of the valve core body.

7. A solenoid valve according to claim 6, characterized in that, The inner wall of the electromagnetic coil housing (1) is provided with a heat insulation layer, which is made of ceramic fiber material and is used to isolate the heat generated when the electromagnetic coil is working, so as to prevent the heat from being conducted to the valve body (5) and affecting the sealing performance.

8. A solenoid valve according to claim 7, characterized in that, The valve body (5) is provided with mounting ears on the outside. The mounting ears are provided with threaded holes and fixing bolts are fitted into the threaded holes to fix the solenoid valve on the mounting surface. The mounting ears and the valve body (5) are integrally formed.

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