An electromagnetic valve

Abstract

The present application relates to a kind of electromagnetic valves, including valve body, shell and valve core, the valve body is provided with the control mechanism for driving the valve core to move to realize commutation, the control mechanism includes: sliding groove, sliding groove sliding connection has connecting rod, both ends of connecting rod are fixedly connected with valve core by stud pin;Mounting seat, rotating shaft is rotatably connected on mounting seat, the upper end of rotating shaft is fixedly connected with rotating wheel, rotating wheel is fixedly connected with the convex column of long slot sliding connection on, electromagnet is fixedly installed on mounting seat, and adjusting mechanism for driving rotating shaft to rotate is arranged on mounting seat and controlled by electromagnet.The present application can control valve core quickly by one electromagnet to carry out commutation work, can save cost, and electromagnet can also position valve core at certain working position without being powered all the time, so that electromagnet will not generate a large amount of heat, reduce loss, prolong service life.

Description

Technical Field

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

[0002] Solenoid valves are electromagnetically controlled industrial devices, serving as fundamental components for fluid control in automation systems. A typical solenoid valve consists of a valve body, a valve core that slides within the valve body, and electromagnets on either side of the valve core. Each electromagnet generally includes an armature and a coil. Controlling the flow of current through the coil controls the displacement of the armature, which in turn controls the movement of the valve core. This movement connects different oil passages on the valve body, thereby changing the direction of fluid flow in the system. Existing solenoid valves generally have three operating positions: left, center, and right. When a solenoid valve needs to maintain its left or right position for an extended period, the electromagnets on both sides must be energized continuously. However, this prolonged energization of the control coil generates significant heat, greatly shortening the coil's lifespan and consequently the solenoid valve's lifespan. Furthermore, existing solenoid valves with three operating positions are typically controlled by two electromagnets, increasing manufacturing costs. Summary of the Invention

[0003] Therefore, it is necessary to provide a solenoid valve that can quickly control the valve core using a single electromagnet, and the electromagnet does not need to be energized for a long time to maintain its state.

[0004] This invention discloses an electromagnetic valve, comprising a valve body, a housing fixedly connected to both ends of the valve body, and a valve core disposed within the valve body and slidably engaged with the valve body. The valve body is provided with a T-port, an A-port, a P-port, and a B-port, and a control mechanism for driving the valve core to move to achieve repositioning is provided on the valve body. The control mechanism includes: a sliding groove disposed on the valve body, a connecting rod slidably connected to the sliding groove, a long groove provided on the connecting rod, both ends of the connecting rod extending into the housing, and both ends of the connecting rod being fixedly connected to the valve core by pins; the sliding groove communicating with a mounting groove disposed on the surface of the valve body; a mounting base fixedly connected to the valve body, a rotating shaft rotatably connected to the mounting base, the upper end of the rotating shaft extending into the mounting groove and fixedly connected to a rotating wheel, a protrusion fixedly connected to the rotating wheel and slidably connected to the long groove; an electromagnet fixedly mounted on the mounting base, and an adjustment mechanism controlled by the electromagnet and used to drive the rotating shaft to rotate on the mounting base.

[0005] In one embodiment, the valve core is provided with a first annular groove, a second annular groove, and a third annular groove for connecting port T and port A. The second annular groove is used to connect port A and port P or port P and port B. A flow channel for connecting port T and port B is connected between the first annular groove and the third annular groove.

[0006] In one embodiment, the adjustment mechanism includes: a track wheel, fixedly connected to the rotating shaft and rotatably connected to the mounting base, the track wheel having an adjustment groove on its side; a moving cavity, disposed on the mounting base, a plunger slidably connected to the moving cavity, a first spring installed between the plunger and the moving cavity, the electromagnet being energized to drive the plunger upward and compress the first spring; a spring groove, disposed on the side of the plunger, an adjustment column slidably connected within the spring groove, a second spring installed between the adjustment column and the spring groove for pushing the adjustment column into the adjustment groove, the adjustment column moving up and down driving the rotating shaft to rotate, thereby driving the valve core to move to achieve position switching.

[0007] In one embodiment, the adjustment groove is divided into a first spiral groove, a first straight groove, a second spiral groove, a second straight groove, a third spiral groove, a third straight groove, a fourth spiral groove, and a fourth straight groove that are connected end to end in sequence.

[0008] In one embodiment, a first boss is provided between the first spiral groove and the first straight groove, a first side surface is provided between the first straight groove and the second spiral groove, a second boss is provided between the second spiral groove and the second straight groove, a second side surface is provided between the second straight groove and the third spiral groove, a third boss is provided between the third spiral groove and the third straight groove, a third side surface is provided between the third straight groove and the fourth spiral groove, a fourth boss is provided between the fourth spiral groove and the fourth straight groove, and a fourth side surface is provided between the fourth straight groove and the first spiral groove.

[0009] In one embodiment, the lower end of the rotating shaft extends out of the valve body and is fixedly connected to an indicator wheel.

[0010] In one embodiment, the length direction of the long groove is perpendicular to the axial direction of the connecting rod.

[0011] In one embodiment, the protrusion is eccentrically positioned, and the rotation of the wheel can drive the protrusion to rotate, thereby causing the connecting rod to move left and right.

[0012] The beneficial effects of this invention are:

[0013] 1. By setting up a rotating wheel and a connecting rod, the convex post on the rotating wheel cooperates with the long groove on the connecting rod, so that the rotation of the rotating wheel can drive the connecting rod to reciprocate in the horizontal direction. Since the connecting rod is fixedly connected to the valve core through a pin, it can drive the valve core to reciprocate left and right, thus completing the control of the valve core, which is convenient and quick.

[0014] 2. By setting up a track wheel, and through the cooperation of the adjusting column on the piston and the adjusting groove on the track wheel, the piston can move to drive the track wheel to rotate, which in turn drives the rotating wheel to rotate, thereby controlling the valve core. By switching the electromagnet on and off and cooperating with the first spring, the piston can be moved. Thus, the valve core can be controlled by a single electromagnet, saving costs.

[0015] 3. By setting several straight and spiral grooves on the track wheel, when the adjusting pin on the piston engages in the spiral groove, it can drive the track wheel to rotate, thereby driving the valve core to change its working position. When the adjusting pin on the piston engages in the straight groove, the adjusting pin can position the track wheel so that it does not rotate. Since the track wheel does not rotate, the position of the valve core will not change. This allows the electromagnet to position the valve core in a certain working position without constant power. Therefore, the electromagnet will not generate a lot of heat, reducing wear and extending its service life.

[0016] 4. By installing an indicator wheel on the valve body, with the indicator wheel and track wheel coaxial and fixedly connected, the working status of the solenoid valve can be judged by observing the direction of the pattern on the indicator wheel. This is simple, clear, convenient and safe. Attached Figure Description

[0017] Figure 1 This is a cross-sectional view of the present invention;

[0018] Figure 2 For the present invention Figure 1 A cross-sectional view along the AA direction;

[0019] Figure 3 For the present invention Figure 1 Enlarged view of point I in the middle;

[0020] Figure 4 This is a three-dimensional view of the track wheel of the present invention;

[0021] Figure 5 This is a three-dimensional view of the track wheel of the present invention from another direction.

[0022] In the figure, valve body 1, mounting groove 11, housing 21, mounting base 22, moving cavity 221, valve core 3, first annular groove 31, second annular groove 32, third annular groove 33, flow channel 34, connecting rod 41, long groove 411, pin 42, rotating wheel 51, protruding post 52, rotating shaft 53, electromagnet 6, plunger 71, adjusting post 72, first spring 73, second spring 74, track wheel 8, first spiral groove 81, first boss 811, first straight groove 82, first side 821, second spiral groove 83, second boss 831, second straight groove 84, second side 841, third spiral groove 85, third boss 851, third straight groove 86, third side 861, fourth spiral groove 87, fourth boss 871, fourth straight groove 88, fourth side 881, and marking wheel 9. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] It should be noted that when a component is said to be "attached" to another component, it can be directly on the other component or it can be in the middle of another component. When a component is said to be "set" to another component, it can be directly set to the other component or it may also be in the middle of another component. When a component is said to be "fixed" to another component, it can be directly fixed to the other component or it may also be in the middle of another component.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "or / and" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] like Figures 1-3 As shown, a solenoid valve includes a valve body 1, a housing 21 fixedly connected to both ends of the valve body 1, and a valve core 3 disposed within the valve body 1 and slidably engaged with the valve body 1. The valve body 1 is provided with a T-port, an A-port, a P-port, and a B-port, and the valve body 1 is provided with a control mechanism for moving the valve core 3 to achieve a switching action. The control mechanism includes a sliding groove disposed on the valve body 1, a connecting rod 41 slidably connected to the sliding groove, the connecting rod 41 being provided with an elongated groove 411, and both ends of the connecting rod 41 extending into the housing 21. The end is fixedly connected to the valve core 3 by a pin 42. The sliding groove is connected to the mounting groove 11 on the surface of the valve body 1. The mounting base 22 is fixedly connected to the valve body 1. A rotating shaft 53 is rotatably connected to the mounting base 22. The upper end of the rotating shaft 53 extends into the mounting groove 11 and is fixedly connected to a rotating wheel 51. A protruding post 52 that is slidably connected to the long groove 411 is fixedly connected to the rotating wheel 51. An electromagnet 6 is fixedly installed on the mounting base 22. The mounting base 22 is provided with an adjustment mechanism controlled by the electromagnet 6 and used to drive the rotating shaft 53 to rotate.

[0027] It is understandable that, such as Figure 1 As shown, there are two pins 42, which are symmetrically arranged along the central axis of the valve core 3.

[0028] Preferred, such as Figure 1 As shown, the valve core 3 is provided with a first annular groove 31, a second annular groove 32, and a third annular groove 33 for connecting port T and port A. The second annular groove 32 is used to connect port A and port P or port P and port B. A flow channel 34 for connecting port T and port B is connected between the first annular groove 31 and the third annular groove 33.

[0029] Preferred, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the adjustment mechanism includes: a track wheel 8, fixedly connected to the rotating shaft 53 and rotatably connected to the mounting base 22, with an adjustment groove on the side of the track wheel 8; a moving cavity 221, disposed on the mounting base 22, with a plunger 71 slidably connected to the moving cavity 221, and a first spring 73 installed between the plunger 71 and the moving cavity 221, which can drive the plunger 71 to move upward and compress the first spring 73 when energized by the electromagnet 6; and a spring groove, disposed on the side of the plunger 71, with an adjustment column 72 slidably connected in the spring groove, and a second spring 74 installed between the adjustment column 72 and the spring groove for pushing the adjustment column 72 into the adjustment groove, which can drive the rotating shaft 53 to rotate by moving the adjustment column 72 up and down, thereby driving the valve core 3 to move to achieve position switching.

[0030] Preferred, such as Figure 4 and Figure 5 As shown, the adjustment groove is divided into a first spiral groove 81, a first straight groove 82, a second spiral groove 83, a second straight groove 84, a third spiral groove 85, a third straight groove 86, a fourth spiral groove 87, and a fourth straight groove 88 that are connected end to end.

[0031] Preferred, such as Figure 4 and Figure 5 As shown, a first boss 811 is provided between the first spiral groove 81 and the first straight groove 82; a first side surface 821 is provided between the first straight groove 82 and the second spiral groove 83; a second boss 831 is provided between the second spiral groove 83 and the second straight groove 84; a second side surface 841 is provided between the second straight groove 84 and the third spiral groove 85; a third boss 851 is provided between the third spiral groove 85 and the third straight groove 86; a third side surface 861 is provided between the third straight groove 86 and the fourth spiral groove 87; a fourth boss 871 is provided between the fourth spiral groove 87 and the fourth straight groove 88; and a fourth side surface 881 is provided between the fourth straight groove 88 and the first spiral groove 81.

[0032] Preferred, such as Figure 3As shown, the lower end of the rotating shaft 53 extends out of the valve body 1 and is fixedly connected to an indicator wheel 9.

[0033] Preferred, such as Figure 2 As shown, the length direction of the long groove 411 is perpendicular to the axial direction of the connecting rod 41.

[0034] Preferred, such as Figure 2 As shown, the protruding post 52 is eccentrically positioned. The rotation of the rotating wheel 51 can drive the protruding post 62 to rotate, thereby driving the connecting rod 41 to move left and right.

[0035] Working principle:

[0036] During operation, assuming the solenoid valve is initially in the neutral position, its P port is disconnected from ports A and B, and the adjusting column 72 is positioned within the fourth straight groove 88. Under the action of the fourth boss 871, the adjusting column 72 can only slide within the fourth straight groove 88, thus preventing the track wheel 8 from rotating and positioning the rotating wheel 51. Consequently, neither the connecting rod 41 nor the valve core 3 moves, keeping the valve core 3 in the neutral working position. Then, the electromagnet 6 is energized, causing it to overcome the first spring 73 and push the plunger 71 upwards, thereby driving the adjusting column 72 upwards along the fourth straight groove 88 until it enters the first spiral groove 81. Finally, the electromagnet 6 is de-energized, and under the action of the first spring 73... Pushing the plunger 71 downward, the fourth side 881 causes the adjusting column 72 to move downward along the first spiral groove 81, thereby driving the track wheel 8 to rotate, which in turn drives the rotating wheel 51 to rotate. The rotating wheel 51 drives the protrusion 52 to rotate, which in turn drives the connecting rod 41 and the valve core 3 to move to the left. When the adjusting column 72 passes the first protrusion 811 along the first spiral groove 81 and enters the first straight groove 82, the P port and the A port are connected, and the B port and the T port are connected. At this time, the valve core 3 is in the left position and works. Due to the action of the first protrusion 811, the adjusting column 72 can only slide in the first straight groove 82, thereby positioning the valve core 3 in the left position. At this time, the electromagnet 6 is de-energized, and the valve core 3 can also maintain the working position.

[0037] Then, the electromagnet 6 is energized again, causing the adjusting column 72 to move upward along the first straight groove 82 and enter the second spiral groove 83. Then, the electromagnet 6 is de-energized, and the plunger 71 is pushed downward under the action of the first spring 73. Due to the action of the first side 821, the adjusting column 72 can only move downward along the second spiral groove 83, thereby driving the track wheel 8 and the rotating wheel 51 to rotate. Through the cooperation of the protrusion 52 and the long groove 411, the valve core 3 is driven to move to the right. When the adjusting column 72 passes the second protrusion 831 along the second spiral groove 83 and enters the second straight groove 84, the P port, A port, and B port are disconnected, and the valve core 3 comes to the middle position to work. Due to the action of the second protrusion 831, the adjusting column 72 can only slide in the second straight groove 84, thereby positioning the valve core 3 in the middle position. At this time, the electromagnet 6 is de-energized, and the valve core 3 can also maintain the working position.

[0038] Then, the electromagnet 6 is energized again, causing the adjusting column 72 to move upward along the second straight groove 84 and into the third spiral groove 85. Then, the electromagnet 6 is de-energized, and the plunger 71 is pushed downward under the action of the first spring 73. Due to the action of the second side 841, the adjusting column 72 can only move downward along the third spiral groove 85, thereby driving the track wheel 8 and the rotating wheel 51 to rotate. Through the cooperation of the protrusion 52 and the long groove 411, the valve core 3 is driven to move to the right. When the adjusting column 72 passes the third protrusion 851 along the third spiral groove 85 and enters the third straight groove 86, the P port and the B port are connected, and the A port and the T port are connected. The valve core 3 is in the right position and works. Due to the action of the third protrusion 851, the adjusting column 72 can only slide in the third straight groove 86, thereby positioning the valve core 3 in the right position. At this time, the electromagnet 6 is de-energized, and the valve core 3 can also maintain the working position.

[0039] Then, the electromagnet 6 is energized again, causing the adjusting column 72 to move upward along the third straight groove 86 and into the fourth spiral groove 87. Then, the electromagnet 6 is de-energized, and the plunger 71 is pushed downward by the first spring 73. Due to the action of the third side 861, the adjusting column 72 can only move downward along the fourth spiral groove 87, thereby driving the track wheel 8 and the rotating wheel 51 to rotate. Through the cooperation of the protrusion 52 and the long groove 411, the valve core 3 moves to the left. When the adjusting column 72 passes the fourth protrusion 871 along the fourth spiral groove 87 and enters the fourth straight groove 88, the P port, A port, and B port are disconnected, and the valve core 3 reaches the neutral position to work. Furthermore, due to the action of the fourth protrusion 871, the adjusting column 72 can only move downward along the fourth spiral groove 87. The valve core 3 slides within the four straight grooves 88, thus positioning it in the neutral position. At this time, the electromagnet 6 is de-energized, and the valve core 3 can still maintain its working position, forming a cycle. By continuously controlling the electromagnet 6 with short-term on-off control, the direction of the solenoid valve's oil circuit can be changed, allowing the solenoid valve to be controlled by a single electromagnet 6. This control method prevents the electromagnet 6 from generating excessive heat, extending its service life. Furthermore, when the solenoid valve is held in a certain working position, the adjusting column 72 is in each straight groove, ensuring the valve core 3 is positioned. The control of the valve core 3 is safe and reliable. Since the indicator wheel 9 and the track wheel 8 are coaxial and fixedly connected, the working position of the valve core 3 can be determined by observing the orientation on the indicator wheel 9, which is convenient, quick, and safe.

[0040] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0041] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. An electromagnetic valve characterized by comprising: The utility model relates to a valve body, fixedly connected with the casing of valve body both ends and set up in the valve core of valve body and with the sliding fit of valve body, be provided with T port, A port, P port, B port on the valve body, and be provided with the control mechanism for driving the valve core to move to realize the position change on the valve body, the control mechanism includes: The sliding groove is set up on the valve body, the sliding groove is slidably connected with the connecting rod, the connecting rod is provided with the long groove, both ends of the connecting rod extend into the casing, and both ends of the connecting rod are fixedly connected with the valve core through the column pin, the sliding groove is communicated with the installation groove set up on the surface of valve body; The mounting seat is fixedly connected on the valve body, the rotating shaft is rotatably connected on the mounting seat, the lower end of rotating shaft extends into the installation groove and is fixedly connected with the rotating wheel, the rotating wheel is fixedly connected with the convex column slidably connected with the long groove on the rotating wheel, the electromagnet is fixedly installed on the mounting seat, and the adjusting mechanism for driving the rotating shaft to rotate is controlled by the electromagnet and set up on the mounting seat; The adjusting mechanism includes: the track wheel is fixedly connected with the rotating shaft and rotatably connected with the mounting seat, the side of track wheel is provided with the adjusting groove;The moving cavity is set up on the mounting seat, the plunger is slidably connected on the moving cavity, the first spring is installed between the plunger and the moving cavity, the plunger can be driven to move upwards and compress the first spring by the electromagnet being electrified;The spring groove is set up on the side of plunger, the adjusting column is slidably connected in the spring groove, the second spring for pushing the adjusting column to be clamped into the adjusting groove is installed between the adjusting column and the spring groove, the rotating shaft can be driven to rotate by the adjusting column moving up and down, and then the valve core is driven to move to realize the position change;The adjusting groove is divided into first helical groove, first straight groove, second helical groove, second straight groove, third helical groove, third straight groove, fourth helical groove and fourth straight groove communicated in sequence.

2. The electromagnetic valve according to claim 1, characterized by The valve core is provided with the first ring groove, the second ring groove and the third ring groove for connecting T port and A port, the second ring groove is used for connecting A port, P port or connecting P port, B port, and the flow channel for connecting T port and B port is communicated between the first ring groove and the third ring groove.

3. The electromagnetic valve according to claim 1, characterized by The first convex is arranged between the first helical groove and the first straight groove, the first side is arranged between the first straight groove and the second helical groove, the second convex is arranged between the second helical groove and the second straight groove, the second side is arranged between the second straight groove and the third helical groove, the third convex is arranged between the third helical groove and the third straight groove, the third side is arranged between the third straight groove and the fourth helical groove, the fourth convex is arranged between the fourth helical groove and the fourth straight groove, and the fourth side is arranged between the fourth straight groove and the first helical groove.

4. The electromagnetic valve according to claim 1, characterized by The lower end of rotating shaft extends out of the valve body and is fixedly connected with the identification wheel.

5. The electromagnetic valve according to claim 1, characterized by The length direction of long groove is perpendicular to the axial direction of connecting rod.

6. The electromagnetic valve according to claim 1, characterized by The convex column is eccentrically arranged, the convex column can be rotated by the rotation of rotating wheel, and then the connecting rod can be driven to move left and right.

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