Electromagnetic valve with adjustable armature lift

Abstract

The utility model discloses an electromagnetic valve with adjustable armature lift, and particularly relates to the technical field of electromagnetic valves, which comprises a magnetic cup, a coil is arranged in the middle of the magnetic cup, an iron core is arranged in the middle of the coil, a movable groove is arranged at the bottom end of the iron core, an armature is arranged in the middle of the movable groove, and the armature is arranged in the movable groove. A containing groove is formed in the position, corresponding to an inner cavity of the movable groove, of the top of the armature, and a spring is arranged in the middle of the containing groove. Firstly, the nozzle is in threaded connection with the thread groove in the bottom end of the coil, the initial position of the armature can be adjusted according to needs, the lift height of the armature is adjusted, adjustment and use are convenient, the movable block is extruded by rotating the fixing bolt, and therefore the fastening pressing rod is controlled to extrude the wall body of the thread groove; the fixing strength after the position of the nozzle is adjusted can be improved, the situation that the nozzle rotates after long-term use, consequently, the height of the armature lift is changed, the use effect is affected is avoided, and the service life is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valve technology, and more specifically, to a solenoid valve with adjustable armature lift. Background Technology

[0002] Currently, some existing solenoid valves on the market use tooling to fix the nozzle and iron core through welding positioning, thereby determining the initial position of the armature inside the solenoid valve, that is, the position of the armature when the solenoid valve is closed. However, this method is costly. On the one hand, it requires the design of corresponding tooling according to the size of the parts; on the other hand, the parts are relatively precise and need to be fixed by laser welding. Compared with traditional welding machines, laser welding machines have a higher overall price, higher energy costs, and more complex maintenance. The lift of a solenoid valve requires precise calculation through a series of dimensions, including the depth of the iron core bore, the total length of the armature, and the initial position of the armature. The initial position of the armature is determined by fixing the nozzle to the iron core. Once the iron core and nozzle are fixed by welding, they cannot be adjusted further, resulting in a very low error tolerance. Incorrect lift adjustment affects the normal use of the solenoid valve. A small lift leads to a small operating current of the solenoid valve, which in turn leads to insufficient magnetic flux of the electromagnet, making it impossible to fully engage the valve core, thus affecting the opening and closing of the solenoid valve. Conversely, a large lift leads to an excessive operating current, which can easily burn out the solenoid valve coil and shorten the service life of the solenoid valve. Therefore, a solenoid valve with adjustable armature lift is proposed. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a solenoid valve with adjustable armature lift to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an adjustable armature lift solenoid valve, comprising a magnetic cup, a coil disposed in the middle of the magnetic cup, an iron core disposed in the middle of the coil, a movable groove being provided at the bottom end of the iron core, an armature disposed in the middle of the movable groove, and an armature being disposed in the middle of the movable groove. When the coil is energized, the armature can be controlled to move upward inside the movable groove, and when the coil is de-energized, the armature can be moved downward. A receiving groove is provided at the top of the armature and at a position corresponding to the inner cavity of the movable groove, and a spring is disposed in the middle of the receiving groove. The receiving groove limits the spring, facilitating installation and preventing jamming, and the spring causes the armature to generate a downward force when the coil is de-energized.

[0005] The cavity height at the top of the armature is set as the armature lift. A threaded groove is provided at the inner opening of the movable slot. A nozzle is provided in the middle of the threaded groove. A rubber sealing gasket is fixedly connected to the bottom of the armature. The outer surface of the nozzle is threadedly connected to the bottom opening of the inner cavity of the movable slot. The armature lift allows the armature to move up and down, which is convenient for controlling the opening and closing. The liquid entering through the magnetic cup cover can be sprayed out sequentially through the bottom of the nozzle. The armature drives the rubber sealing gasket to move downward, so that the rubber sealing gasket is pressed into the sealing structure at the top of the nozzle, which can block the through hole of the nozzle. The range of armature lift can be adjusted by the threaded connection between the nozzle and the movable slot, thereby adjusting the maximum height of the armature lift for easy adjustment and use.

[0006] The nozzle has symmetrical placement grooves on both sides, and stabilizing grooves on both sides of the inner cavity of the placement grooves. A threaded column and a moving block are provided in the middle of the placement groove. A fastening rod is fixedly connected to one end of the moving block, and an arc-shaped spring is fixedly connected to one end of the threaded column. The bottom of the nozzle has symmetrical mounting grooves on both sides, and a fixing bolt is inserted in the middle of the mounting groove. By rotating the fixing bolt, one end of the moving block is pressed, causing the moving block to press against the arc-shaped spring, thereby driving one end of the fastening rod to move out from inside the threaded column and press against the threaded groove, improving the fixing strength of the nozzle position, preventing loosening, and improving the fixing strength after adjustment. The stability of the moving block movement is improved by the cooperation of the stabilizing groove and the stabilizing slide. By rotating the fixing bolt, the pressing on the moving block is released. At this time, the arc-shaped spring pushes against the arc-shaped spring, causing the fastening rod to loosen, facilitating rotation and adjustment.

[0007] Preferably, a magnetic cup cover is provided on the top of the coil, the magnetic cup cover is threadedly connected to the magnetic cup, the top end of the iron core extends into the interior of the magnetic cup cover, and a sealing ring is provided between the middle of the magnetic cup cover and the iron core. The magnetic cup cover limits the installation of the coil and can limit the top end of the iron core. The sealing ring provides a sealing function to prevent gas or impurities from entering the gap between the coil and the iron core from above.

[0008] Preferably, the bottom end of the iron core is threadedly connected to the bottom wall of the inner cavity of the magnetic cup, and the shoulder step of the iron core fits tightly with the magnetic cup, which facilitates the installation and fixing of the iron core.

[0009] Preferably, the central through hole of the iron core corresponds to the central through hole of the armature, the nozzle is provided with an annular spray hole in the center, and a sealing ring is embedded on the outer surface of the top of the nozzle. Liquid entering through the central through hole of the iron core can be sprayed out through the central through hole of the armature and then through the annular spray hole of the nozzle. The sealing ring provides a sealing function to prevent external gas or impurities from entering the gap between the iron core and the armature.

[0010] Preferably, the threaded post is threadedly connected to the inner wall of the placement groove, the movable block is disposed on the opposite side of the two threaded posts, and the side wall of the movable block away from the fastening rod is set as an inclined surface. The threaded post facilitates the installation of the movable block and the limiting of the movable block's movement position.

[0011] Preferably, the stabilizing slide bar corresponds to the stabilizing groove, the stabilizing slide bar is located in the middle of the stabilizing groove, the fastening pressure rod passes through the middle of the arc-shaped spring and the threaded column, and the two ends of the arc-shaped spring are in contact with one side wall of the moving block. Through the cooperation of the stabilizing slide bar and the stabilizing groove, the stability of the moving block is improved, and it is convenient to limit the installation of the moving block. By moving the fastening pressure rod out from the inside of the threaded column and squeezing the threaded groove, the position of the nozzle can be fixed, and the fixing effect is improved.

[0012] Preferably, the inner cavity of the mounting groove is connected to the inner cavity of the placement groove. One end of the fixing bolt is configured as a spherical structure, and one end of the fixing bolt extends into the interior of the placement groove and fits against one side of the inclined surface of the moving block. The fixing bolt is threadedly connected to the inner cavity of the mounting groove. By rotating the fixing bolt, one side of the inclined surface of the moving block can be squeezed, which facilitates squeezing and pushing the moving block, thereby controlling the fastening rod to squeeze and fix the threaded groove, and improving the use effect.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model firstly connects the nozzle and the bottom threaded groove of the coil with a threaded connection, which can adjust the initial position of the armature as needed, thereby adjusting the height of the armature lift, making it convenient to adjust and use. Furthermore, by rotating the fixing bolt to squeeze the moving block, the pressure of the fastening rod on the wall of the threaded groove can be controlled, which can improve the fixing strength after the nozzle is adjusted, prevent the nozzle from rotating during long-term use, which would cause the height of the armature lift to change, affect the use effect, and improve the service life.

[0015] 2. This utility model also improves the stability of the moving block's movement through the combination of a stabilizing slide bar and a stabilizing slide groove. The threaded post limits the position of the moving block and facilitates its assembly and installation. The arc-shaped spring plate pushes the moving block, loosening the fixing bolts. When the moving block is pressed, it resets, releasing the nozzle's position and facilitating adjustment, thus improving performance. In summary, through the interaction of these multiple functions, the initial position of the armature can be adjusted as needed, thereby adjusting the armature lift height, facilitating adjustment, extending service life, and allowing for fixation of the adjusted position, thus increasing the fixation strength. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0018] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0019] Figure 4 This is a schematic diagram of the cross-sectional split structure of this utility model.

[0020] Figure 5 This is a schematic diagram of the split cross-sectional structure of the nozzle of this utility model.

[0021] The attached diagram is labeled as follows: 1. Magnetic cup; 2. Coil; 3. Iron core; 4. Magnetic cup cover; 5. Movable groove; 6. Armature; 7. Armature lift; 8. Spring; 9. Nozzle; 10. Receiving groove; 11. Threaded groove; 12. Rubber sealing gasket; 13. Placement groove; 14. Stabilizing slide; 15. Threaded column; 16. Moving block; 17. Stabilizing slide bar; 18. Fastening rod; 19. Arc-shaped spring; 20. Mounting groove; 21. Fixing bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] As attached Figure 1-5 The solenoid valve shown includes a magnetic cup 1, a coil 2 disposed in the middle of the magnetic cup 1, an iron core 3 disposed in the middle of the coil 2, a movable groove 5 opened at the bottom end of the iron core 3, and an armature 6 disposed in the middle of the movable groove 5. When the coil 2 is energized, the armature 6 can be controlled to move upward inside the movable groove 5. When the coil 2 is de-energized, the armature 6 can be moved downward. A receiving groove 10 is opened at the top of the armature 6 and the corresponding position of the inner cavity of the movable groove 5. A spring 8 is disposed in the middle of the receiving groove 10. The receiving groove 10 limits the spring 8, which facilitates installation and prevents jamming. The spring 8 causes the armature 6 to generate a downward force when the coil 2 is de-energized.

[0024] The height of the cavity at the top of the armature 6 is set as the armature lift 7. A threaded groove 11 is provided at the inner opening of the movable groove 5. A nozzle 9 is provided in the middle of the threaded groove 11. A rubber sealing gasket 12 is fixedly connected to the bottom of the armature 6. The outer surface of the nozzle 9 is threadedly connected to the bottom opening of the inner cavity of the movable groove 5. The armature lift 7 allows the armature 6 to have space to move up and down, which is convenient for controlling the opening and closing. The liquid entering through the magnetic cup cover 4 is conveniently sprayed out through the bottom of the nozzle 9. The armature 6 drives the rubber sealing gasket 12 to move downward, so that the rubber sealing gasket 12 is pressed into the sealing structure at the top of the nozzle 9 to block the through hole of the nozzle 9. The range of motion of the armature lift 7 can be adjusted by the threaded connection between the nozzle 9 and the movable groove 5, thereby adjusting the maximum height of the armature lift 7 for convenient adjustment and use.

[0025] The nozzle 9 has symmetrical placement grooves 13 on both sides. The inner cavity of each placement groove 13 has symmetrical stabilizing grooves 14 on both sides. A threaded post 15 and a movable block 16 are located in the middle of each placement groove 13. A fastening rod 18 is fixedly connected to one end of the movable block 16, and an arc-shaped spring piece 19 is fixedly connected to one end of the threaded post 15. The bottom of the nozzle 9 has symmetrical mounting grooves 20 on both sides. A fixing bolt 21 is inserted into the middle of each mounting groove 20. By rotating the fixing bolt 21, one end of the movable block 16 is pressed, causing the movable block 16 to move. The curved spring 19 is pressed, which causes one end of the fastening rod 18 to move out of the threaded column 15 and press against the threaded groove 11, thereby increasing the fixing strength of the nozzle 9 position, preventing loosening, and improving the fixing strength after adjustment. The stability of the moving block 16 is improved by the cooperation of the stabilizing slide 14 and the stabilizing slide 17. The pressing of the moving block 16 is released by rotating the fixing bolt 21. At this time, the pressing of the curved spring 19 is released by pushing the curved spring 19, which makes the fastening rod 18 loosen and facilitates rotation and adjustment.

[0026] As attached Figure 1-5As shown, a magnetic cup cover 4 is provided on the top of the coil 2, and the magnetic cup cover 4 is threadedly connected to the magnetic cup 1. The top of the iron core 3 extends into the interior of the magnetic cup cover 4. A sealing ring is provided between the middle of the magnetic cup cover 4 and the iron core 3. The bottom end of the iron core 3 is threadedly connected to the bottom wall of the inner cavity of the magnetic cup 1. The shoulder step of the iron core 3 fits tightly with the magnetic cup 1. The through hole in the middle of the iron core 3 corresponds to the through hole in the middle of the armature 6. An annular spray hole is provided in the middle of the nozzle 9. A sealing ring is embedded on the outer surface of the top of the nozzle 9. The threaded post 15 is threadedly connected to the inner wall of the placement groove 13. The moving block 16 is provided with... On opposite sides of the two threaded posts 15, the side wall of the moving block 16 away from the fastening rod 18 is set as an inclined surface. The stabilizing slide 17 corresponds to the stabilizing groove 14 and is located in the middle of the stabilizing groove 14. The fastening rod 18 passes through the middle of the arc-shaped spring 19 and the threaded post 15. The two ends of the arc-shaped spring 19 are in contact with one side wall of the moving block 16. The inner cavity of the mounting groove 20 is connected to the inner cavity of the placement groove 13. One end of the fixing bolt 21 is set as a spherical structure and extends into the interior of the placement groove 13, where it meets the inclined surface of one side of the moving block 16. The mounting bolt 21 is threaded into the inner cavity of the mounting groove 20. The magnetic cup cover 4 limits the installation of the coil 2 and also limits the top of the iron core 3. The sealing ring prevents gas or impurities from entering the gap between the coil 2 and the iron core 3, facilitating the installation and fixing of the iron core 3. Liquid entering through the through hole in the middle of the iron core 3 can be sprayed out through the annular nozzle 9 through the through hole in the middle of the armature 6. The sealing ring prevents external gas or impurities from entering the gap between the iron core 3 and the armature 6. 15 facilitates the installation of the movable block 16 and the limiting of its movement position. The cooperation of the stabilizing slide bar 17 and the stabilizing slide groove 14 improves the stability of the movement of the movable block 16 and facilitates the installation and limiting of the movable block 16. By moving the fastening pressure rod 18 out from the inside of the threaded column 15 to squeeze the threaded groove 11, the position of the nozzle 9 can be fixed, improving the fixing effect. By rotating the fixing bolt 21, one side of the inclined surface of the movable block 16 can be squeezed, facilitating the squeezing and pushing of the movable block 16, thereby controlling the squeezing and fixing of the threaded groove 11 by the fastening pressure rod 18, improving the use effect.

[0027] The working principle of this utility model is as follows: When in use, by energizing the coil 2, the armature 6 can be controlled to move upward to squeeze the spring 8. At this time, the armature 6 will drive the rubber sealing gasket 12 to move upward, so that the rubber sealing gasket 12 is separated from the sealing structure at the top of the nozzle 9. At this time, the through hole inside the iron core 3 is connected to the annular spray hole inside the nozzle 9 through the middle of the armature 6. At this time, the solenoid valve is in the open state.

[0028] When the control coil 2 is de-energized, the spring 8 squeezes the armature 6, causing the armature 6 to move the rubber sealing gasket 12 downward, so that the bottom end of the rubber sealing gasket 12 is pressed into the sealing structure at the top of the nozzle 9, thereby sealing the annular spray hole in the middle of the nozzle 9, and the solenoid valve is in the closed state.

[0029] When it is necessary to adjust the lift height of the armature lift 7, the lift height of the armature lift 7 can be adjusted sequentially by rotating the nozzle 9 and the threaded connection of the threaded groove 11. After the adjustment is completed, rotate the fixing bolt 21 to press the moving block 16, so that the fastening rod 18 presses against the wall of the threaded groove 11, thereby fixing the position of the nozzle 9, which can improve the stability after adjustment and improve the use effect.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An electromagnet valve with adjustable armature lift comprising a magnetically conductive cup (1), characterized in that: A coil (2) is provided in the middle of the magnetic cup (1), an iron core (3) is provided in the middle of the coil (2), a movable groove (5) is provided at the bottom end of the iron core (3), an armature (6) is provided in the middle of the movable groove (5), a receiving groove (10) is provided at the top of the armature (6) and the corresponding position of the inner cavity of the movable groove (5), and a spring (8) is provided in the middle of the receiving groove (10). The cavity height at the top of the armature (6) is set as the armature lift (7). A threaded groove (11) is provided at the inner cavity opening of the movable groove (5). A nozzle (9) is provided in the middle of the threaded groove (11). A rubber sealing gasket (12) is fixedly connected to the bottom of the armature (6). The outer surface of the nozzle (9) is threadedly connected to the bottom opening of the inner cavity of the movable groove (5). The nozzle (9) has symmetrical placement grooves (13) on both sides. The inner cavity of the placement groove (13) has symmetrical stabilizing grooves (14) on both sides. The placement groove (13) has a threaded column (15) and a moving block (16) in the middle. One end of the moving block (16) is fixedly connected to a fastening rod (18). One end of the threaded column (15) is fixedly connected to an arc-shaped spring piece (19). The bottom of the nozzle (9) has symmetrical mounting grooves (20) on both sides. The mounting groove (20) has a fixing bolt (21) inserted in the middle.

2. The poppet lift adjustable electromagnetic valve according to claim 1, characterized in that: The top of the coil (2) is provided with a magnetic cup cover (4), which is threadedly connected to the magnetic cup (1). The top of the iron core (3) extends into the interior of the magnetic cup cover (4), and a sealing ring is provided between the middle of the magnetic cup cover (4) and the iron core (3).

3. The poppet lift adjustable electromagnetic valve according to claim 1, wherein: The bottom end of the iron core (3) is threadedly connected to the bottom wall of the inner cavity of the magnetic cup (1), and the shoulder step of the iron core (3) is closely fitted with the magnetic cup (1).

4. The poppet lift adjustable electromagnetic valve according to claim 1, wherein: The central through hole of the iron core (3) corresponds to the central through hole of the armature (6), and the nozzle (9) is provided with an annular spray hole in the middle, and a sealing ring is embedded on the outer surface of the top of the nozzle (9).

5. The poppet lift adjustable electromagnetic valve according to claim 1, wherein: The threaded column (15) is threadedly connected to the inner wall of the placement groove (13), and the moving block (16) is located on the opposite side of the two threaded columns (15). The side wall of the moving block (16) away from the fastening rod (18) is set as an inclined surface.

6. The poppet lift adjustable electromagnetic valve according to claim 1, wherein: The stabilizing slide bar (17) corresponds to the stabilizing groove (14). The stabilizing slide bar (17) is located in the middle of the stabilizing groove (14). The fastening pressure bar (18) passes through the middle of the arc-shaped spring (19) and the threaded column (15). The two ends of the arc-shaped spring (19) are in contact with one side wall of the moving block (16).

7. The poppet lift adjustable electromagnetic valve according to claim 1, wherein: The inner cavity of the mounting groove (20) is connected to the inner cavity of the placement groove (13). One end of the fixing bolt (21) is configured as a spherical structure. One end of the fixing bolt (21) extends into the interior of the placement groove (13) and fits against one side of the inclined surface of the moving block (16). The fixing bolt (21) is threadedly connected to the inner cavity of the mounting groove (20).

Images