A semi-automatic solenoid valve that locks heavy loads and reliably unlocks with low power consumption

Abstract

The present invention discloses a semi-automatic solenoid valve that locks a heavy load and reliably unlocks with low power consumption. One end of a moving part that moves up and down in a valve cover sealing channel is connected to a self-lubricating ball head bolt rod end joint bearing, and the other end is connected to a heavy load. The other end of the joint bearing is connected to a driven rod, one end of a linkage rod is connected to a pin at one end of a moving iron core, and one end of an active rod is connected to a power rotating head through a transmission shaft. A static iron core, a coil, and an axially movable moving iron core are provided in a plastic-sealed electromagnetic coil. When the permanent magnetic force of the static iron core on the moving iron core is greater than the axial force of the combined force of the moving part gravity and the airtight force spring force on the moving iron core, the valve is in an open valve state and locks the heavy load; when the permanent magnetic force of the static iron core on the moving iron core is less than the axial force of the combined force of the moving part gravity and the airtight force spring force on the moving iron core, the moving part is lightly unlocked and moves downward to close the valve. The present invention has the advantages of locking a heavy load, low power consumption, and light unlocking.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic locks of electromagnetic valves, and in particular to a semi-automatic electromagnetic valve which can lock a heavy load and reliably unlock with low power consumption. Background Art

[0002] At present, the heavy-load electromagnetic gas emergency shut-off valve on the market is a bayonet-type lock tongue electromagnetic valve, which adopts a multi-stage lock tongue structure in order to lock heavy loads and unlock with low power consumption. However, since the force value needs to be transmitted through multiple stages and most of the lock tongue is subjected to unidirectional side force, the unlocking is unreliable, especially when the number of switches is large, and the opening of the electromagnetic gas emergency shut-off valve is direct-acting, the opening force is very large.

[0003] Currently on the market, there are electromagnetic gas emergency shut-off valves with valve opening assist structures. The shut-off valves have a publication number (CN205806656U). The structural requirements are complex, and the force value is converted and transmitted at multiple levels. The parts accuracy and installation accuracy are both high, and the production difficulty is high.

[0004] Currently, the electromagnetic gas emergency shut-off valve with low power consumption and reliable unlocking on the market is direct-acting, but due to the limitations of the magnetic lock structure and coil, it is impossible to reliably lock and unlock heavy loads, and the opening force is very large.

[0005] The above are the areas that need to be improved in this application. Summary of the invention

[0006] The present invention aims to provide a semi-automatic solenoid valve which can lock a heavy load and easily unlock the heavy load and can reliably unlock the heavy load with low power consumption.

[0007] In order to solve the above technical problems, the present invention provides a semi-automatic solenoid valve that locks heavy loads and reliably unlocks with low power consumption. One end of a moving component that moves up and down in a valve cover sealing channel is connected to a self-lubricating ball head bolt rod end joint bearing, and the other end is connected to a heavy load. The other end of the self-lubricating ball head bolt rod end joint bearing is connected to a driven rod of a multi-link linkage assembly, one end of the linkage rod of the multi-link linkage assembly is connected to a pin at one end of a moving iron core, and one end of the active rod of the multi-link linkage assembly is connected to a power rotating head through a transmission shaft. A static iron core, a coil and an axially movable moving iron core are provided in a plastic-sealed electromagnetic coil. The axis of the electromagnetic coil and the axis of the moving component are perpendicular to each other. When the permanent magnetic force of the static iron core on the moving iron core is greater than the axial component of the moving component's gravity and the airtight force spring force on the moving iron core, the valve is in an open valve state and locks the heavy load; when the permanent magnetic force of the static iron core on the moving iron core is less than the axial component of the moving component's gravity and the airtight force spring force on the moving iron core, the moving component lightly unlocks and moves downward to close the valve.

[0008] A pulse voltage is applied to the plastic-sealed electromagnetic coil to generate an instantaneous magnetic field, and the direction of the magnetic field is the same as that of the permanent magnetic field. According to the principle of mutual repulsion between like magnetic poles, when the permanent magnetic force of the static iron core on the moving iron core is smaller than the axial force of the combined force of the gravity of the moving part and the airtight spring force on the moving iron core, the moving part is slightly unlocked and moves downward to close the valve.

[0009] The multi-link linkage assembly includes a driven rod, an active rod and a linkage rod. One end of the three links is connected by a pin. The driven rod is located between the active rod and the linkage rod. Self-lubricating gaskets are provided at the connections between the driven rod, the active rod and the linkage rod for isolation.

[0010] The power rotating head is sleeved with an extended rod of a valve opening handle. The extended rod of the valve opening handle causes the power rotating head to rotate, thereby driving the active rod to rotate. The linkage rod pin-connected to the active rod works together to separate the moving iron core from the static iron core, thereby driving the moving parts to move up and down. The lever principle is used to realize easy opening and closing of the valve.

[0011] The inner diameter of the power rotating head has a notch, and the inner diameter fits tightly with the transmission key. The transmission key is a protruding block on the outer circumference of the end of the transmission shaft. A linear bearing is installed on the transmission shaft for positioning to ensure the reliability of torque transmission between the power rotating head driving the transmission shaft and the active rod.

[0012] The present invention also provides a semi-automatic solenoid valve that can lock a heavy load and reliably unlock with low power consumption. One end of a moving component that moves up and down in a valve cover sealing channel is connected to a self-lubricating ball head bolt rod end joint bearing, and the other end of the moving component is connected to a heavy load. The other end of the self-lubricating ball head bolt rod end joint bearing is connected to a driven rod of a multi-link linkage assembly. One end of the linkage rod of the multi-link linkage assembly is connected to a pin at one end of a moving iron core. One end of the active rod of the multi-link linkage assembly is connected to a power rotating head through a transmission shaft. A stationary iron core, a coil and an axially movable moving iron core are provided in a plastic-sealed electromagnetic coil. The coil is continuously energized to generate an electromagnetic force F 电 , and make the direction of the electromagnetic force the same as the direction of the permanent magnetic field, the axis of the electromagnetic coil and the axis of the moving part are perpendicular to each other, when the combined force of the permanent magnetic force and the electromagnetic force of the static iron core on the moving iron core is greater than the axial component of the combined force of the moving part gravity and the airtight force spring force on the moving iron core, the valve is in an open state and locks the heavy load; when the power supply to the coil is stopped and the permanent magnetic force of the static iron core on the moving iron core is less than the axial component of the combined force of the moving part gravity and the airtight force spring force on the moving iron core, the moving part lightly unlocks and moves downward to close the valve.

[0013] The multi-link linkage assembly includes a driven rod, an active rod and a linkage rod. One end of the three links is connected by a pin. The driven rod is located between the active rod and the linkage rod. Self-lubricating gaskets are provided at the connections between the driven rod, the active rod and the linkage rod for isolation.

[0014] The power rotating head is sleeved with an extended rod of a valve opening handle. The extended rod of the valve opening handle causes the power rotating head to rotate, thereby driving the active rod to rotate. The linkage rod pin-connected to the active rod works together to separate the moving iron core from the static iron core, thereby driving the moving parts to move up and down. The lever principle is used to realize easy opening and closing of the valve.

[0015] The inner diameter of the power rotating head has a notch, and the inner diameter fits tightly with the transmission key. The transmission key is a protruding block on the outer circumference of the end of the transmission shaft. A linear bearing is installed on the transmission shaft for positioning to ensure the reliability of torque transmission between the power rotating head driving the transmission shaft and the active rod.

[0016] A manual unlocking assembly is added to the plastic-sealed electromagnetic coil housing. The push rod of the manual unlocking assembly passes through the diameter of the static iron core and abuts against the end face of the moving iron core. The push rod is manually pressed to push the moving iron core to separate it from the static iron core. When the moving iron core slides outward, it drives the linkage rod to move, thereby linking the driven rod. The moving component moves downward due to its own gravity to close the valve, thereby achieving light unlocking.

[0017] The superior effects of the present invention are:

[0018] 1) The present invention converts the heavy load force of the moving parts from axial to radial through the conversion of force value, thereby reducing the pressure of permanent magnetic locking force;

[0019] 2) The present invention uses the lever principle to easily open the valve;

[0020] 3) One end of the moving part of the present invention is connected to the self-lubricating ball stud rod end joint bearing, which effectively reduces the machining accuracy and assembly difficulty of the assembler, and has an automatic compensation function when there is a size deviation;

[0021] 4) Each connecting joint of the multi-link linkage assembly of the present invention is provided with a self-lubricating gasket to reduce friction, thereby improving reliability;

[0022] 5) The solenoid valve of the present invention can unlock by increasing the instantaneous electromagnetic force, thereby reducing the power consumption of the coil and improving the reliability, thus becoming an efficient shut-off valve that locks heavy loads, has low power consumption and is easy to unlock;

[0023] 6) The present invention reduces the power consumption of the electromagnetic coil when the electromagnetic lock is continuously powered by increasing the permanent magnetic force;

[0024] 7) The present invention is provided with a protection mechanism to prevent accidental operation and injury to persons. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0026] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0027] Figure 2 for Figure 1 A partial enlarged view of

[0028] Figure 3 It is a structural schematic diagram of an embodiment of the present invention;

[0029] Figure 4 for Figure 3 A partial enlarged view of

[0030] Figure 5 It is a schematic structural diagram of an active rod, a driven rod, a linkage rod and a power rotating head in an embodiment of the present invention;

[0031] Figure 6 for Figure 5 Exploded diagram of the power rotary head and transmission shaft;

[0032] Figure 7 It is a schematic diagram of force decomposition according to an embodiment of the present invention;

[0033] Description of the symbols in the figure

[0034] 1—valve body; 2—moving parts;

[0035] 3—gas-tight spring; 4—valve cover;

[0036] 5—Self-lubricating ball stud rod end joint bearing; 6—Driven rod;

[0037] 7—active rod; 8—linkage rod;

[0038] 9—moving iron core; 10—static iron core;

[0039] 11—Plastic-sealed electromagnetic coil; 12—Shell cover;

[0040] 13—Energy storage valve closing module; 14—Actuator housing;

[0041] 15—transmission shaft; 16—transmission key;

[0042] 17—connecting piece; 18—power rotating head;

[0043] 19—Linear bearing; 20—Protective cover;

[0044] 21-valve opening handle extension rod; 22-limiting piece. DETAILED DESCRIPTION

[0045] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0046] like Figure 1-Figure 6 As shown, the first embodiment of the present invention provides a semi-automatic solenoid valve that locks a heavy load and reliably unlocks with low power consumption. One end of the moving part 2 that moves up and down in the sealing channel of the valve cover 4 is threadedly connected to the self-lubricating ball head bolt rod end joint bearing 5 to ensure that the moving part 2 is reliably sealed when moving up and down in the sealing channel of the valve cover 4, and at the same time, it will not limit the installation direction of the actuator housing 14. The other end of the moving part 2 is connected to the heavy load. The other end of the self-lubricating ball head bolt rod end joint bearing 5 is pin-connected to the driven rod 6, which has an automatic compensation function when the size is deviated. The other end of the driven rod 6 is pin-connected to the active rod 7 and the linkage rod 8. The connection between the driven rod 6, the active rod 7 and the linkage rod 8 is provided with a self-lubricating gasket for isolation to prevent the generation of large friction during rotation to affect the reliability of the switch valve. The driven rod 6 is located between the active rod 7 and the linkage rod 8. The other end of the linkage rod 8 is pin-connected to one end of the moving iron core 9, and the other end of the active rod 7 is connected to the power rotating head 18 through the transmission shaft 15. The active rod 7 and the transmission shaft 15 are pin-connected or threaded. A static iron core 10, a coil and an axially movable moving iron core 9 are provided in the plastic-sealed electromagnetic coil 11. The axis of the plastic-sealed electromagnetic coil 11 and the axis of the moving component 2 are perpendicular to each other. When the permanent magnetic force of the static iron core 10 on the moving iron core 9 is greater than the axial component of the combined force of the gravity of the moving component 2 and the airtight force spring force on the moving iron core 9, the valve is in an open state and locks the heavy load; when the permanent magnetic force of the static iron core 10 on the moving iron core 9 is less than the axial component of the combined force of the gravity of the moving component 2 and the airtight force spring force on the moving iron core 9, the moving component 2 is lightly unlocked and moves downward to close the valve.

[0047] The electromagnetic coil applies a pulse voltage to generate an instantaneous magnetic field, and its magnetic field direction is the same as the permanent magnetic field direction. According to the principle of mutual repulsion between like magnetic poles, when the permanent magnetic force of the static iron core 10 on the moving iron core 9 is smaller than the axial component of the combined force of the moving part's gravity and the airtight spring force on the moving iron core, the moving part 2 is slightly unlocked and moves downward to close the valve.

[0048] like Figure 1-Figure 6As shown, the second embodiment of the present invention provides a semi-automatic solenoid valve that locks a heavy load and reliably unlocks with low power consumption. One end of the moving part 2 that moves up and down in the sealing channel of the valve cover 4 is threadedly connected to the self-lubricating ball head bolt rod end joint bearing 5 to ensure that the moving part 2 is reliably sealed when moving up and down in the sealing channel of the valve cover 4, and at the same time, it will not limit the installation direction of the actuator housing 14. The other end of the moving part 2 is connected to the heavy load. The other end of the self-lubricating ball head bolt rod end joint bearing 5 is pin-connected to the driven rod 6, which has an automatic compensation function when the size is deviated. The other end of the driven rod 6 is pin-connected to the active rod 7 and the linkage rod 8. The connection between the driven rod 6, the active rod 7 and the linkage rod 8 is provided with a self-lubricating gasket for isolation to prevent the generation of large friction during rotation to affect the reliability of the switch valve. The driven rod 6 is located between the active rod 7 and the linkage rod 8. The other end of the linkage rod 8 is pin-connected to one end of the moving iron core 9, and the other end of the active rod 7 is connected to the power rotating head 18 through the transmission shaft 15. The active rod 7 and the transmission shaft 15 are pin-connected or threaded. The plastic-encapsulated electromagnetic coil 11 is provided with a stationary iron core 10, a coil and an axially movable moving iron core 9.

[0049] The difference between the second embodiment and the first embodiment is that the plastic-encapsulated electromagnetic coil is continuously energized to generate an electromagnetic force F 电 And make the direction of electromagnetic force the same as the direction of permanent magnetic field, the axis of electromagnetic coil and the axis of moving part are perpendicular to each other, when the combined force of permanent magnetic force and electromagnetic force of static iron core on moving iron core is greater than the combined force of gravity of moving part and airtight force spring force on the axial force of moving iron core, the valve is in the open state and locks the heavy load; when the power supply to the coil is stopped and the permanent magnetic force of static iron core on moving iron core is less than the combined force of gravity of moving part and airtight force spring force on the axial force of moving iron core, the moving part lightly unlocks and moves downward to close the valve.

[0050] The present invention also provides a device for easily opening a valve. The power rotating head 18 is sleeved with a valve opening handle extension rod 21, and the lever principle is used to realize easy opening and closing of the valve.

[0051] The power rotating head 18 is manually rotated to drive the linkage rod 8 to move so that the moving iron core 9 is separated from the static iron core 10, thereby realizing manual unlocking. The driven rod 6 drives the moving component 2 to move downward to close the valve.

[0052] The inner diameter of the power rotating head 18 has a notch, and the inner diameter is tightly matched with the transmission key 16. The transmission key 16 is a protruding block on the outer circumference of the end of the transmission shaft 15. The transmission shaft 15 is equipped with a linear bearing 19 for positioning. The gap between the transmission shaft 15 and the power rotating head 18 is controlled so that the external force rotating the power rotating head 18 drives the transmission shaft 15 to rotate without causing interference. At the same time, the installation of the power rotating head 18 is relatively fixed and reliable. The power rotating head 18 has a notch to achieve a tight fit with the transmission key 16 when opening the valve to achieve safe and reliable valve opening. When closing the valve, there is a gap at one end with the transmission key 16 to achieve an empty stroke to prevent accidental operation of the valve opening handle extension rod 21 to injure people.

[0053] The present invention provides another manual unlocking device, which is to add a manual button on the outer shell of the plastic-sealed electromagnetic coil 11. The push rod of the manual button passes through the diameter of the static iron core 10 and abuts against the end face of the moving iron core 9. When manually unlocking, the button is pressed, and the push rod moves to separate the moving iron core 9 from the static iron core 10. The moving component 2 moves downward due to its own gravity to close the valve, thereby realizing light unlocking.

[0054] like Figure 7 As shown, the lengths of the driven rod 6, the active rod 7, the linkage rod 8 and the rotation height of the active rod 7 are adjusted to achieve angles θ1 (the angle between the driven rod 6 and the coordinate axis Y1), angle θ2 (the angle between the driven rod 6 and the linkage rod 8), angle θ3 (the angle between the driven rod 6 and the active rod 7), and angle θ4 (the angle between the linkage rod 8 and the coordinate axis X3), thereby changing the permanent magnetic force F of the static iron core on the moving iron core. 永 The balance ratio between the gas-tight spring and the weight of the moving part F is as follows: 永 =1 / 3F heavy, the valve can be reliably locked when in the open state, realizing locking of heavy loads.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A semi-automatic solenoid valve that can lock a heavy load and reliably unlock with low power consumption, characterized in that: One end of the moving component that moves up and down in the valve cover sealing channel is connected to the self-lubricating ball stud rod end joint bearing, and the other end of the moving component is connected to the heavy load, and the other end of the self-lubricating ball stud rod end joint bearing is connected to the driven rod of the multi-link linkage assembly. The multi-link linkage assembly includes a driven rod, an active rod and a linkage rod. One end of the driven rod, the active rod and the linkage rod are pin-connected by a pin. The driven rod is located between the active rod and the linkage rod, and the other end of the linkage rod is pin-connected to one end of the moving iron core. The other end of the active rod is connected to the power rotating head through a transmission shaft. A static iron core, a coil and an axially movable moving iron core are provided in the plastic-sealed electromagnetic coil. The axis of the plastic-sealed electromagnetic coil and the axis of the moving component are perpendicular to each other. When the permanent magnetic force on the moving iron core is greater than the axial force of the moving part's gravity and the airtight force spring force on the moving iron core, the valve is in an open state and locks the heavy load; when the permanent magnetic force of the static iron core on the moving iron core is less than the axial force of the moving part's gravity and the airtight force spring force on the moving iron core, the moving part is lightly unlocked and moves downward to close the valve; wherein, the power rotating head is sleeved with an extension rod of a valve opening handle, and the extension rod of the valve opening handle rotates the power rotating head, driving the active rod to rotate, and working together with the linkage rod pinned to the active rod, driving the moving part to move up and down, thereby realizing light valve opening or manual unlocking; the inner diameter of the power rotating head has a notch, and the inner diameter is tightly matched with the transmission key, and the transmission key is a protruding block on the outer circumference of the end of the transmission shaft, and a linear bearing is installed on the transmission shaft for positioning.

2. A semi-automatic solenoid valve that can lock a heavy load and reliably unlock with low power consumption according to claim 1, characterized in that: A pulse voltage is applied to the plastic-sealed electromagnetic coil to generate an instantaneous magnetic field, and the direction of the magnetic field is the same as the direction of the permanent magnetic field, so that when the permanent magnetic force of the static iron core on the moving iron core is smaller than the axial component of the combined force of the gravity of the moving part and the airtight spring force on the moving iron core, the moving part is slightly unlocked and moves downward to close the valve.

3. A semi-automatic solenoid valve that locks heavy loads and reliably unlocks with low power consumption, characterized in that: One end of the moving component that moves up and down in the valve cover sealing channel is connected to the self-lubricating ball head bolt rod end joint bearing, and the other end of the moving component is connected to the heavy load, and the other end of the self-lubricating ball head bolt rod end joint bearing is connected to the driven rod of the multi-link linkage assembly. The multi-link linkage assembly includes a driven rod, an active rod and a linkage rod. One end of the driven rod, the active rod and the linkage rod are pin-connected by a pin. The driven rod is located between the active rod and the linkage rod, and the other end of the linkage rod is pin-connected to one end of the moving iron core. The other end of the active rod is connected to the power rotating head through a transmission shaft. The plastic-sealed electromagnetic coil is provided with a static iron core, a coil and an axially movable moving iron core. The coil is continuously energized to generate an electromagnetic force, and the direction of the electromagnetic force is the same as the direction of the permanent magnetic field. The axis of the plastic-sealed electromagnetic coil and the axis of the moving component are mutually When the combined force of the permanent magnetic force and the electromagnetic force of the static iron core on the moving iron core is perpendicular to each other, and is greater than the axial component of the combined force of the moving part's gravity and the airtight force spring force on the moving iron core, the valve is in an open state and locks the heavy load; when the power supply to the coil is stopped, and the permanent magnetic force of the static iron core on the moving iron core is less than the axial component of the combined force of the moving part's gravity and the airtight force spring force on the moving iron core, the moving part lightly unlocks and moves downward to close the valve; wherein, the power rotating head is sleeved with an extension rod of a valve opening handle, and the extension rod of the valve opening handle rotates the power rotating head, driving the active rod to rotate, and working together with the linkage rod pinned to the active rod, driving the moving part to move up and down, thereby realizing light valve opening or manual unlocking; the inner diameter of the power rotating head has a notch, and the inner diameter is tightly matched with the transmission key, and the transmission key is a protruding block on the outer circumference of the end of the transmission shaft, and a linear bearing is installed on the transmission shaft for positioning.

4. A semi-automatic solenoid valve that can lock a heavy load and unlock with low power consumption according to claim 1 or 3, characterized in that The characteristic of the invention is that self-lubricating gaskets are arranged at the connection points between the driven rod, the active rod and the linkage rod for isolation.

5. A semi-automatic solenoid valve that can lock a heavy load and unlock reliably with low power consumption according to claim 1 or 3, characterized in that: A manual unlocking assembly is added to the plastic-sealed electromagnetic coil housing. The push rod of the manual unlocking assembly passes through the diameter of the static iron core and abuts against the end face of the moving iron core. The push rod is manually pressed to push the moving iron core to separate it from the static iron core. When the moving iron core slides outward, it drives the linkage rod to move, thereby linking the driven rod. The moving part moves downward due to its own gravity to close the valve.

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