Damping regulating valve

Abstract

The utility model provides a damping regulating valve which comprises a coil, a shell, a valve sleeve, a sealing ring, an outer valve seat, a movable valve element, a movable valve element spring, a spring seat, a sliding block, a valve rod, an inner valve seat, a reed, an armature spring, an armature, a ball support, a steel ball and a clamping spring. The damping regulating valve is simple in structure, high in damping control precision and small in response delay, and through the design of the structure and the flow channel of the damping regulating valve, driving force which needs to overcome oil pressure resistance and drives the valve rod to move downwards can be obtained only by applying small working current; the small working current enables the current rise hysteresis from starting to electrifying to the minimum damping working current caused by the coil inductance suppression current change to be small, and the corresponding electromagnetic valve working current can be applied according to different working conditions, so that the flow channel damping of the damping adjusting valve can be adjusted and controlled.

Description

Technical Field

[0001] This utility model relates to the field of regulating valve technology, specifically to a damping regulating valve with a large working flow. Background Technology

[0002] Traditional vehicle shock absorbers have fixed damping characteristics, providing consistent cushioning during extension and contraction, resulting in poor adaptability to various operating conditions. With the continuous development of automotive technology, adjustable damping shock absorbers have been adopted, improving vehicle comfort, handling, and safety. Adjustable damping shock absorbers require damping adjustment valves to control the damping. However, existing adjustable damping control valves are complex in structure, difficult to operate, and have low control accuracy. Furthermore, the upper and lower shaft holes of current damping adjustment valves are not interconnected; the electromagnetic force driving the valve stem downwards must overcome not only the armature spring's elasticity but also the oil pressure resistance within the spring seat valve hole. Therefore, the damping adjustment valve exhibits significant response lag. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention proposes a damping regulating valve with a simple structure, high damping control accuracy, and low response hysteresis.

[0004] To achieve the above technical solution, this utility model provides a damping regulating valve, comprising: a coil, a housing, a valve sleeve, a sealing ring, an outer valve seat, a moving valve core, a moving valve core spring, a spring seat, a slider, a valve stem, an inner valve seat, a reed, an armature spring, an armature, a ball bracket, a steel ball, and a snap ring. The coil is installed inside the housing and connected by the snap ring. The valve sleeve is installed inside the coil. The sealing ring is installed outside the valve sleeve. The outer valve seat is installed at the bottom of the valve sleeve. The moving valve core is installed inside the outer valve seat. A throttling hole is provided at the bottom axis of the moving valve core. The moving valve core spring is installed in the inner cavity of the moving valve core. The spring seat is installed between the valve sleeve and the outer valve seat. The slider is installed inside the spring seat. The valve stem is vertically arranged along the longitudinal direction. The bottom of the valve stem is connected to the slider. The top of the valve stem is connected to the armature. The armature spring is installed on the spring seat. The inner valve seat is installed below the spring seat. The reed is installed on the top surface of the inner valve seat. The armature is installed above the armature spring. The ball bracket is fixed to the top of the armature. The steel ball is installed between the ball bracket and the armature.

[0005] Preferably, the coil is installed in the upper hole of the outer casing, and the upper part of the valve sleeve extends through the axial hole of the outer casing into the hole of the coil. A sealing ring mounting groove is provided on the outer side of the valve sleeve, and a radial flow-through hole connecting the inside and outside of the valve sleeve is provided. The sealing ring is installed in the sealing ring mounting groove on the outer side of the valve sleeve. The outer valve seat is tightly fitted and fixed to the bottom of the valve sleeve. The outer valve seat has a axial through hole, and a radial flow-through hole connecting the inside and outside of the outer valve seat is provided on its side. A flow-through notch is provided on the outer side of the outer valve seat. The moving valve core is installed in the outer valve seat, and a throttling hole is provided on the axial center of the bottom of the moving valve core. The moving valve core spring is installed in the inner cavity of the moving valve core, and the spring seat is tightly fitted and fixed in the axial hole of the valve sleeve. The slider is installed in the slider mounting hole of the spring seat, and a flow-through hole is provided on the slider, passing through the upper and lower end faces of the slider. The bottom of the valve stem is tightly fitted and fixed to the slider. Inside the axial bore of the block, a countersunk hole is provided at the bottom of the valve stem, and a through hole is provided at the center of the valve stem shaft, passing through the upper and lower ends of the valve stem. The inner valve seat and the spring are installed in the stop at the lower end of the spring seat. The bottom surface of the spring abuts against the top surface of the inner valve seat. A through hole is provided at the center of the spring shaft. A flow groove is provided around the axial bore of the spring. An armature spring is provided on the spring seat. The upper part of the valve stem passes through the axial through hole of the spring seat and extends into the axial bore of the armature. The upper part of the valve stem and the bottom axial bore of the armature are tightly fitted. The bottom surface of the armature abuts against the top surface of the armature spring. The ball bracket is fixed on the top of the armature. A through hole is provided at the center of the ball bracket shaft, passing through the upper and lower ends of the ball bracket. A steel ball is provided between the top surface of the armature and the flange of the ball bracket to constrain the radial displacement of the top of the armature. The snap ring is locked in the slot of the coil and the slot of the outer shell to fix the coil inside the outer shell.

[0006] Preferably, an overflow gap δ1 is provided between the bottom surface of the inner cavity of the outer valve seat and the bottom surface of the moving valve core; an overflow gap δ2 is provided between the outer circle of the slider and the slider mounting hole in the spring seat; an overflow gap δ3 is provided between the bottom surface of the valve stem and the top surface of the spring; an overflow gap δ4 is provided between the top surface of the slider and the top surface of the overflow groove in the spring seat; and an overflow gap δ5 is provided between the bottom surface of the slider and the bottom surface of the valve stem.

[0007] Preferably, the spring seat has a central through hole, a slider mounting hole inside the spring seat, a stop at the lower end of the spring seat, an inner flow groove inside the spring seat, an outer flow groove outside the spring seat, a radial flow hole connecting the inner and outer flow grooves on the spring seat, and a countersunk hole on the top surface of the inner flow groove of the spring seat.

[0008] Preferably, the bottom of the inner valve seat is provided with a throttling hole, and the center of the top of the inner valve seat is provided with a countersunk hole that communicates with the throttling hole at the bottom of the inner valve seat. The diameter of the countersunk hole at the center of the top of the inner valve seat is the same as the outer diameter of the valve stem installed in the axial through hole of the spring seat. A flow groove is provided around the center of the countersunk hole at the top of the inner valve seat.

[0009] Preferably, the flow gap between the bottom surface of the valve stem and the top surface of the spring plate decreases as the flow gap between the top surface of the slider and the top surface of the flow groove inside the spring seat increases.

[0010] Preferably, the following components constitute the bypass regulating flow channel of the damping regulating valve: the bottom axial throttling hole of the moving valve core, the inner cavity of the moving valve core, the bottom throttling hole of the inner valve seat, the central countersunk hole at the top of the inner valve seat, the axial hole of the reed, the flow gap between the bottom surface of the valve stem and the top surface of the reed, the flow gap between the bottom surface of the slider and the bottom surface of the valve stem, the flow gap between the outer circle of the slider and the slider mounting hole in the spring seat, the inner flow groove inside the spring seat, the radial flow hole connecting the inner and outer flow grooves of the spring seat, the outer flow groove outside the spring seat, the radial flow hole connecting the inner and outer sides of the valve sleeve, and the flow notch on the outer side of the outer valve seat.

[0011] Preferably, the flow gap between the bottom surface of the slider and the bottom surface of the valve stem, the flow hole penetrating the upper and lower end surfaces of the slider, the countersunk hole on the top surface of the flow groove in the spring seat at the top of the slider, and the flow gap between the top surface of the slider and the top surface of the flow groove in the spring seat to the flow groove in the spring seat constitute an additional bypass regulating flow channel.

[0012] Preferably, the slider and valve stem are an integral structure.

[0013] The beneficial effects of the damping regulating valve provided by this utility model are as follows: This damping regulating valve has a simple structure and ingenious design. Through the design of the structure and flow channel of the damping regulating valve, only a small working current is needed to obtain the driving force for the valve stem to move downward to overcome the oil pressure resistance. The small working current makes the current rise lag from the start of energization to the minimum damping working current small due to the suppression of current changes in the coil inductance. At the same time, the diameter of the countersunk hole on the top surface of the flow groove in the spring seat is much larger than the valve stem shaft diameter of the current damping regulating valve. This allows the slider of the damping regulating valve of this utility model to obtain a sufficiently large flow cross-sectional area between the top surface of the slider and the top surface of the flow groove in the spring seat with a small downward stroke. The small stroke makes the motion response lag of the moving parts small. The small current rise lag of the applied working current and the small motion response lag of the moving parts result in a small energization response lag of the damping regulating valve of this utility model. Attached Figure Description

[0014] Figure 1 This is a structural view of the damping regulating valve of this utility model in the intermediate damping state.

[0015] Figure 2 This is a structural view of the spring seat of the damping regulating valve of this utility model.

[0016] Figure 3 This is a structural view of the damping regulating valve of this utility model in the minimum damping state.

[0017] Figure 4This is a structural view of the damping regulating valve of this utility model in the maximum damping state. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: A damping regulating valve.

[0020] like Figure 1As shown, a damping regulating valve includes a coil 1, a housing 2, a valve sleeve 3, a sealing ring 4, an outer valve seat 5, a moving valve core 6, a moving valve core spring 7, a spring seat 8, a slider 9, a valve stem 10, an inner valve seat 11, a reed 12, an armature spring 13, an armature 14, a ball support 15, a steel ball 16, and a retaining ring 17. The coil 1 is installed in the upper hole of the housing 2. The upper part of the valve sleeve 3 passes through the axial hole of the housing 2 and extends into the hole of the coil 1. A sealing ring mounting groove is provided on the outer side of the valve sleeve 3. The valve sleeve 3 also has a radial flow hole connecting the inside and outside of the valve sleeve. The sealing ring 4 is installed in the sealing ring mounting groove on the outer side of the valve sleeve 3. The outer valve seat 5 is tightly fitted and fixed to the bottom of the valve sleeve 3. The outer valve seat 5 has an axial through hole, and a connecting hole is provided on the side of the outer valve seat 5. The outer valve seat 5 has radial flow passages inside and outside. A flow notch is provided on the outer side of the outer valve seat 5. The moving valve core 6 is installed inside the outer valve seat 5. A throttling orifice is provided at the bottom axis of the moving valve core 6. The moving valve core spring 7 is installed in the inner cavity of the moving valve core 6. The spring seat 8 is tightly fitted and fixed in the axial hole of the valve sleeve 3. The spring seat 8 has a axial through hole 8-1. A slider mounting hole 8-2 is provided inside the spring seat 8. A stop 8-3 is provided at the lower end of the spring seat 8. An inner flow groove 8-4 is provided inside the spring seat 8. An outer flow groove 8-5 is provided outside the spring seat 8. A radial flow passage 8-6 connecting the inner and outer flow grooves is provided on the spring seat 8. A countersunk hole 8-7 is provided on the top surface of the inner flow groove 8-4 of the spring seat 8. The slider 9 is installed in the slider mounting hole 8-2 of the spring seat 8. A flow-through hole is provided through the upper and lower end faces of the slider 9. The bottom of the valve stem 10 is tightly fixed in the axial hole of the slider 9. A countersunk hole is provided at the bottom of the valve stem 10, and a axial through hole is provided in the center of the valve stem 10, which passes through the upper and lower ends of the valve stem 10. The slider 9 and the valve stem 10 can also be an integral structure. The inner valve seat 11 and the spring 12 are installed in the stop 8-3 at the lower end of the spring seat 8. The bottom surface of the spring 12 abuts against the top surface of the inner valve seat 11. A throttling hole 11-1 is provided at the bottom of the inner valve seat 11. A countersunk hole 11-2 communicating with the throttling hole 11-1 at the bottom of the inner valve seat 11 is provided at the center of the top of the inner valve seat 11. The diameter of the countersunk hole 11-2 at the center of the top of the inner valve seat 11 is the same as the outer diameter of the valve stem 10 installed in the axial through hole 8-1 of the spring seat 8. The inner valve seat 11 has a countersunk hole 11-2 at the top center, and a flow groove 11-3 is provided around its periphery. The spring 12 has a through hole 12-1 at its shaft center, and a flow groove 12-2 is provided around the shaft center hole 12-1 of the spring 12. An armature spring 13 is provided on the spring seat 8. The upper part of the valve stem 10 passes through the shaft through hole 8-1 of the spring seat 8 and extends into the shaft center hole of the armature 14. The upper part of the valve stem 10 and the bottom shaft center hole of the armature 14 are tightly fitted together. The bottom surface of the armature 14 abuts against the top surface of the armature spring 13. The ball bracket 15 is fixed to the top of the armature 14. The ball bracket 15 has a shaft through hole at its shaft center that passes through the upper and lower ends of the ball bracket 15. A steel ball 16 is provided between the top surface of the armature 14 and the flange of the ball bracket 15 to constrain the radial displacement of the top of the armature 14.The retaining ring 17 is engaged in the retaining groove of the coil 1 and the retaining groove of the outer shell 2, thus fixing the coil 1 inside the outer shell 2. A flow gap δ1 is provided between the bottom surface of the inner cavity of the outer valve seat 5 and the bottom surface of the moving valve core 6. A flow gap δ2 is provided between the outer circle of the slider 9 and the slider mounting hole 8-2 inside the spring seat 8. A flow gap δ3 is provided between the bottom surface of the valve stem 10 and the top surface of the spring 12. A flow gap δ4 is provided between the top surface of the slider 9 and the top surface of the flow groove 8-4 inside the spring seat 8. A flow gap δ5 is provided between the bottom surface of the slider 9 and the bottom surface of the valve stem 10. When the damping regulating valve is not energized, the elastic force of the armature spring 13 pushes the armature 1 upwards. 4. The armature 14 drives the valve stem 10 and the slider 9 to move upward, causing the top surface of the slider 9 to abut against the top surface of the flow groove 8-4 inside the spring seat 8, thus closing the flow gap δ4 between the top surface of the slider 9 and the top surface of the flow groove 8-4 inside the spring seat 8. Other components include: the bottom axial throttling hole of the moving valve core 6, the inner cavity of the moving valve core 6, the bottom throttling hole 11-1 of the inner valve seat 11, the central countersunk hole 11-2 at the top of the inner valve seat 11, the axial hole 12-1 of the spring plate 12, the flow gap δ3 between the bottom surface of the valve stem 10 and the top surface of the spring plate 12, the flow gap δ5 between the bottom surface of the slider 9 and the bottom surface of the valve stem 10, and the outer circle of the slider 9 and the slider mounting hole 8 inside the spring seat 8. The flow gap δ2 between -2, the inner flow groove 8-4 inside the spring seat 8, the radial flow hole 8-6 connecting the inner and outer flow grooves of the spring seat 8, the outer flow groove 8-5 outside the spring seat 8, the radial flow hole connecting the inner and outer sides of the valve sleeve, and the flow notch on the outer side of the outer valve seat 5 constitute the bypass regulating flow channel of the damping regulating valve. After the oil pressure in the axial hole of the outer valve seat 5 increases, the oil in the inner cavity of the moving valve core 6 leaks to the oil cavity at the bottom of the outer casing 2 through the bypass regulating flow channel. The throttling effect of the axial throttling hole at the bottom of the moving valve core 6 creates a pressure difference between the inner cavity of the moving valve core 6 and the bottom surface of the moving valve core 6. The axial force generated by the pressure difference acting on the moving valve core 6 overcomes the... The spring force of the moving valve core spring 7 pushes the moving valve core 6 upward, opening the flow gap δ1 between the bottom surface of the inner cavity of the outer valve seat 5 and the bottom surface of the moving valve core 6. High-pressure oil in the axial bore of the outer valve seat 5 leaks from the flow gap δ1 between the bottom surface of the inner cavity of the outer valve seat 5 and the bottom surface of the moving valve core 6, and from the radial flow hole on the side of the outer valve seat 5, into the oil chamber at the bottom of the outer casing 2. Under this condition, the damping of the bypass regulating flow channel of the damping regulating valve is in an intermediate damping state between the minimum and maximum damping. Correspondingly, the damping of the flow gap δ1 between the bottom surface of the inner cavity of the outer valve seat 5 and the bottom surface of the moving valve core 6 is in an intermediate damping state between the minimum and maximum damping.

[0021] like Figure 2 As shown, a damping regulating valve has a spring seat 8 with a axial through hole 8-1, a slider mounting hole 8-2 inside the spring seat 8, a stop 8-3 at the lower end of the spring seat 8, an inner flow groove 8-4 inside the spring seat 8, an outer flow groove 8-5 outside the spring seat 8, a radial flow hole 8-6 connecting the inner and outer flow grooves on the spring seat 8, and a countersunk hole 8-7 on the top surface of the inner flow groove 8-4 of the spring seat 8.

[0022] like Figure 3As shown, in a damping regulating valve, the flow gap δ3 between the bottom surface of the valve stem 10 and the top surface of the spring plate 12 changes in the opposite direction as the flow gap δ4 between the top surface of the slider 9 and the top surface of the flow groove 8-4 inside the spring seat 8 increases. After the damping regulating valve is energized, the electromagnetic force overcomes the elastic force of the armature spring 13, driving the armature 14 to move the valve stem 10 and the slider 9 downwards. This opens the flow gap δ4 between the top surface of the slider 9 and the top surface of the flow groove 8-4 inside the spring seat 8, while simultaneously reducing the flow gap δ3 between the bottom surface of the valve stem 10 and the top surface of the spring plate 12. The bypass regulating flow channel of the damping regulating valve is increased by the flow gap δ5 between the bottom surface of the slider 9 and the bottom surface of the valve stem 10, the flow hole penetrating the upper and lower end surfaces of the slider 9, and the flow groove δ4 inside the spring seat 8 at the top of the slider 9. The countersunk hole 8-7 on the top surface of the flow channel 8-4, the flow gap δ4 between the top surface of the slider 9 and the top surface of the flow channel 8-4 inside the spring seat 8, and the flow channel 8-4 inside the spring seat 8 form an additional bypass regulating flow channel. After the damping regulating valve applies the minimum damping working current, the electromagnetic force overcomes the elastic force of the armature spring 13, driving the armature 14 to move the valve stem 10 and the slider 9 downwards. The flow cross-sectional area of ​​the additional flow channel between the top surface of the slider 9 and the top surface of the flow channel 8-4 inside the spring seat 8, and the flow cross-sectional area of ​​the flow gap δ2 between the outer circle of the slider 9 and the slider mounting hole 8-2 inside the spring seat 8, are equal to the flow cross-sectional area of ​​the flow gap δ3 between the bottom surface of the valve stem 10 and the top surface of the spring 12, thus making the bypass regulating flow of the damping regulating valve equal. The damping of the channel is minimal, and the leakage of oil from the inner cavity of the moving valve core 6 to the oil cavity at the bottom of the outer casing 2 through the bypass regulating channel is minimal. The throttling effect of the axial throttling orifice at the bottom of the moving valve core 6 maximizes the pressure difference between the inner cavity and the bottom surface of the moving valve core 6, thus maximizing the pressure difference between the inner cavity and the bottom of the moving valve core 6. The axial force generated by the pressure difference between the inner cavity and the bottom of the moving valve core 6 overcomes the elastic force of the moving valve core spring 7, pushing the moving valve core 6 upward and opening the flow gap δ1 between the bottom surface of the inner cavity of the outer valve seat 5 and the bottom surface of the moving valve core 6 to the fully open state. The damping of the flow gap δ1 between the bottom surface of the inner cavity of the outer valve seat 5 and the bottom surface of the moving valve core 6 is at its minimum. The axial through holes at the upper and lower ends of the valve stem 10 and the axial through holes at the upper and lower ends of the ball bracket 15 connect the bottom of the valve stem 10. The oil chamber and the oil chamber at the top of the ball support 15 ensure that the axial resultant force of the oil pressure acting on the valve stem 10 is always zero, thus eliminating the back pressure resistance of the valve stem movement caused by oil pressure. The damping regulating valve of this invention only needs to apply a small working current to obtain the driving force for the valve stem to move downward to overcome the oil pressure resistance. The small working current makes the current rise lag from the start of energization to the minimum damping working current caused by the current change of the coil inductance small. At the same time, the diameter of the countersunk hole 8-7 on the top surface of the flow groove 8-4 in the spring seat 8 is much larger than the valve stem shaft diameter of the current damping regulating valve, so that the slider 9 of the damping regulating valve of this invention can obtain a sufficiently large flow cross-sectional area of ​​the flow gap δ4 between the top surface of the slider 9 and the top surface of the flow groove 8-4 in the spring seat 8 with a small downward stroke.The short travel distance results in minimal hysteresis in the motion response of the moving parts, and the reduced hysteresis in the current rise of the applied working current, combined with the minimal hysteresis in the motion response of the moving parts, leads to minimal hysteresis in the energized operating response of the damping regulating valve of this invention.

[0023] like Figure 4As shown, a damping regulating valve, after the maximum operating current is applied to the damping regulating valve, the electromagnetic force overcomes the elastic force of the armature spring 13, driving the armature 14 to move the valve stem 10 downward, so that the bottom surface of the valve stem 10 presses against the top surface of the spring 12, closing the flow gap δ3 between the bottom surface of the valve stem 10 and the top surface of the spring 12. The oil in the inner cavity of the moving valve core 6 can only flow from the bottom throttling hole 11-1 of the inner valve seat 11, the central countersunk hole 11-2 at the top of the inner valve seat 11, the axial hole 12-1 of the spring 12, the axial through hole through the upper and lower ends of the valve stem 10, the axial through hole through the upper and lower ends of the ball support 15, the oil cavity at the top of the ball support 15, the gap between the valve sleeve 3 and the outer circle of the armature 14, and the bottom of the armature 14. The leakage from the oil cavity, the sliding fit gap between the outer circle of valve stem 10 and the axial through hole 8-1 of spring seat 8, the countersunk hole 8-7 on the top surface of the flow groove 8-4 inside spring seat 8, the flow gap δ4 between the top surface of slider 9 and the top surface of the flow groove 8-4 inside spring seat 8, the inner flow groove 8-4 inside spring seat 8, the radial flow hole 8-6 connecting the inner and outer flow grooves of spring seat 8, the outer flow groove 8-5 outside spring seat 8, the radial flow hole connecting the inner and outer sides of valve sleeve, and the flow notch on the outer side of outer valve seat 5 constitutes a bypass regulating flow channel that leaks into the oil cavity at the bottom of outer shell 2. The small gap between the sliding fit between the outer circle of valve stem 10 and the axial through hole 8-1 of spring seat 8 reduces the bypass regulation of the damping regulating valve. When the flow channel damping is at its maximum, the throttling orifice at the bottom of the moving valve core 6 connects the inner cavity of the moving valve core 6 with the bottom of the moving valve core, making the pressure difference between the oil pressure in the inner cavity of the moving valve core 6 and the oil pressure at the bottom of the moving valve core small. The upward and downward axial force of the oil pressure acting on the moving valve core 6 is small. The downward thrust of the moving valve core spring 7 causes the bottom surface of the moving valve core 6 to press against the bottom surface of the inner cavity of the outer valve seat 5, thus closing the flow gap δ1 between the bottom surface of the inner cavity of the outer valve seat 5 and the bottom surface of the moving valve core 6. The high-pressure oil in the axial bore of the outer valve seat 5 cannot leak to the oil cavity at the bottom of the outer casing 2 through the flow gap δ1 between the bottom surface of the inner cavity of the outer valve seat 5 and the bottom surface of the moving valve core 6, thus keeping the flow channel damping of the damping regulating valve at its maximum. When the oil in the axial bore of the outer valve seat 5... When the oil pressure experiences a sudden surge, the pressure wave travels through the bottom axial throttling hole of the moving valve core 6, the inner cavity of the moving valve core 6, the bottom throttling hole 11-1 of the inner valve seat 11, the central countersunk hole 11-2 at the top of the inner valve seat 11, the axial hole 12-1 of the reed 12, the axial through hole connecting the upper and lower ends of the valve stem 10, and the axial through hole connecting the upper and lower ends of the ball support 15 to the oil cavity at the top of the ball support 15. When the pressure wave reaches the central countersunk hole 11-2 at the top of the inner valve seat 11, the axial force generated by the pressure difference between the bottom surface of the reed 12 and the top surface of the ball support 15 acts on the bottom surface of the reed 12, causing the middle part of the reed 12 to deform upward and open the gap between the bottom surface of the reed 12 and the top surface of the inner valve seat 11.High-pressure oil in the central countersunk hole 11-2 at the top of the inner valve seat 11 flows through the gap between the bottom surface of the spring 12 and the top surface of the inner valve seat 11, the flow groove 11-3 at the top of the inner valve seat 11, the flow groove 12-2 of the spring 12, the flow gap δ5 between the bottom surface of the slider 9 and the bottom surface of the valve stem 10, the flow hole penetrating the upper and lower end surfaces of the slider 9, the flow gap δ4 between the top surface of the slider 9 and the top surface of the flow groove 8-4 inside the spring seat 8, the inner flow groove 8-4 inside the spring seat 8, and the radial flow hole 8-6 connecting the inner and outer flow grooves of the spring seat 8. The bypass regulating flow channel formed by the outer flow groove 8-5 outside the spring seat 8, the radial flow hole connecting the inside and outside of the valve sleeve, and the flow notch on the outside of the outer valve seat 5 leaks into the oil cavity at the bottom of the outer casing 2. The downward electromagnetic driving force acting on the valve stem 10 and the downward deformation elastic force generated by the upward deformation of the middle part of the spring 12 reduce the axial force of the pressure difference between the bottom surface of the spring 12 and the top surface of the ball support 15, and quickly reset the spring 12 and press it tightly against the top surface of the inner valve seat 11. The spring 12 is fixed around and the upward deformation of the middle part of the spring 12 is constrained. This limits the upward displacement of the valve stem 10, which is pressed tightly against the top surface of the reed 12, due to the impact of the pressure wave. The combined effect of the electromagnetic driving force and the deformation elasticity of the reed 12 minimizes the lag in the reset of the reed 12. The diameter of the central countersunk hole 11-2 at the top of the inner valve seat 11 is the same as the shaft diameter of the valve stem 10. The axial resultant force of the oil pressure acting on the valve stem 10 is zero, thus eliminating the back pressure resistance of the valve stem movement caused by the oil pressure. The damping regulating valve can control the flow gap δ3 between the bottom surface of the valve stem 10 and the top surface of the reed 12 with a small maximum operating current. When the regulating flow channel is closed, and the power is cut off from the energized state, the small operating current causes the coil inductance to suppress the current change, resulting in a small hysteresis from the operating current decreasing to zero. The elastic force of the armature spring 13 pushes the armature 14 upward, causing the valve stem 10 to move upward and opening the overflow gap δ3 between the bottom surface of the valve stem 10 and the top surface of the spring 12, thereby opening the bypass regulating flow channel of the damping regulating valve. The small hysteresis of the damping regulating valve's de-energization response also results in a small hysteresis. By applying the corresponding solenoid valve operating current according to different operating conditions, the flow channel damping of the damping regulating valve can be adjusted and controlled.

[0024] The above description is only a preferred embodiment of the present utility model. However, the present utility model should not be limited to the content disclosed in the embodiment and the accompanying drawings. Therefore, any equivalent or modified embodiments made without departing from the spirit disclosed in the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A damping regulating valve, characterized in that... include: The system comprises a coil, a housing, a valve sleeve, a sealing ring, an outer valve seat, a moving valve core, a moving valve core spring, a spring seat, a slider, a valve stem, an inner valve seat, a reed, an armature spring, an armature, a ball bracket, a steel ball, and a retaining ring. The coil is installed inside the housing and connected by a retaining ring. The valve sleeve is installed inside the coil. The sealing ring is installed outside the valve sleeve. The outer valve seat is installed at the bottom of the valve sleeve. The moving valve core is installed inside the outer valve seat. A throttling hole is provided at the bottom axis of the moving valve core. The moving valve core spring is installed in the inner cavity of the moving valve core. The spring seat is installed between the valve sleeve and the outer valve seat. The slider is installed inside the spring seat. The valve stem is vertically arranged along the longitudinal direction. The bottom of the valve stem is connected to the slider, and the top of the valve stem is connected to the armature. The armature spring is installed on the spring seat. The inner valve seat is installed below the spring seat. The reed is installed on the top surface of the inner valve seat. The armature is installed above the armature spring. The ball bracket is fixed to the top of the armature, and the steel ball is installed between the ball bracket and the armature.

2. The damping regulating valve according to claim 1, characterized in that: The coil is installed in the upper hole of the outer casing. The upper part of the valve sleeve extends through the axial hole of the outer casing into the hole of the coil. A sealing ring mounting groove is provided on the outer side of the valve sleeve. The valve sleeve has a radial flow hole connecting the inside and outside of the valve sleeve. The sealing ring is installed in the sealing ring mounting groove on the outer side of the valve sleeve. The outer valve seat is tightly fixed to the bottom of the valve sleeve. The outer valve seat has a axial through hole. The side of the outer valve seat has a radial flow hole connecting the inside and outside of the outer valve seat. A flow notch is provided on the outer side of the outer valve seat. The moving valve core is installed in the outer valve seat. A throttling hole is provided on the axial center of the bottom of the moving valve core. The moving valve core spring is installed in the inner cavity of the moving valve core. The spring seat is tightly fixed in the axial hole of the valve sleeve. The slider is installed in the slider mounting hole of the spring seat. The slider has a flow hole passing through the upper and lower end faces of the slider. The bottom of the valve stem is tightly fixed to the slider. Inside the axial bore, a countersunk hole is provided at the bottom of the valve stem, and a through hole is provided at the center of the valve stem shaft, passing through the upper and lower ends of the valve stem. The inner valve seat and the spring are installed in the stop at the lower end of the spring seat. The bottom surface of the spring abuts against the top surface of the inner valve seat, and a through hole is provided at the center of the spring shaft. A flow groove is provided around the axial bore of the spring. An armature spring is provided on the top of the spring seat. The upper part of the valve stem passes through the axial through hole of the spring seat and extends into the axial bore of the armature. The upper part of the valve stem and the bottom axial bore of the armature are tightly fitted. The bottom surface of the armature abuts against the top surface of the armature spring. The ball bracket is fixed on the top of the armature. A through hole is provided at the center of the ball bracket shaft, passing through the upper and lower ends of the ball bracket. A steel ball is provided between the top surface of the armature and the flange of the ball bracket to constrain the radial displacement of the top of the armature. The snap ring is locked in the slot of the coil and the slot of the outer shell to fix the coil inside the outer shell.

3. The damping regulating valve according to claim 2, characterized in that: An overflow gap δ1 is provided between the bottom surface of the inner cavity of the outer valve seat and the bottom surface of the moving valve core; an overflow gap δ2 is provided between the outer circle of the slider and the slider mounting hole in the spring seat; an overflow gap δ3 is provided between the bottom surface of the valve stem and the top surface of the spring plate; an overflow gap δ4 is provided between the top surface of the slider and the top surface of the overflow groove in the spring seat; and an overflow gap δ5 is provided between the bottom surface of the slider and the bottom surface of the valve stem.

4. The damping regulating valve according to claim 2, characterized in that: The spring seat is provided with a central through hole, a slider mounting hole inside the spring seat, a stop at the lower end of the spring seat, an inner flow groove inside the spring seat, an outer flow groove outside the spring seat, a radial flow hole connecting the inner and outer flow grooves on the spring seat, and a countersunk hole on the top surface of the inner flow groove of the spring seat.

5. The damping regulating valve according to claim 4, characterized in that: The inner valve seat has a throttling hole at the bottom and a countersunk hole at the center of the top of the inner valve seat that communicates with the throttling hole at the bottom of the inner valve seat. The diameter of the countersunk hole at the center of the top of the inner valve seat is the same as the outer diameter of the valve rod installed in the axial through hole of the spring seat. A flow groove is provided around the countersunk hole at the center of the top of the inner valve seat.

6. The damping regulating valve according to claim 2, characterized in that: The flow gap between the bottom surface of the valve stem and the top surface of the spring plate decreases as the flow gap between the top surface of the slider and the top surface of the flow groove inside the spring seat increases.

7. The damping regulating valve according to claim 5, characterized in that: The following components constitute the bypass regulating flow channel of the damping regulating valve: the bottom spool throttling hole of the moving valve core, the inner cavity of the moving valve core, the bottom throttling hole of the inner valve seat, the central countersunk hole at the top of the inner valve seat, the spool hole of the reed, the flow gap between the bottom surface of the valve stem and the top surface of the reed, the flow gap between the bottom surface of the slider and the bottom surface of the valve stem, the flow gap between the outer circle of the slider and the slider mounting hole in the spring seat, the inner flow groove inside the spring seat, the radial flow hole connecting the inner and outer flow grooves of the spring seat, the outer flow groove outside the spring seat, the radial flow hole connecting the inner and outer sides of the valve sleeve, and the flow notch on the outer side of the outer valve seat.

8. The damping regulating valve according to claim 5, characterized in that: The flow gap between the bottom surface of the slider and the bottom surface of the valve stem, the flow hole penetrating the upper and lower end surfaces of the slider, the countersunk hole on the top surface of the flow groove in the spring seat at the top of the slider, and the flow gap between the top surface of the slider and the top surface of the flow groove in the spring seat to the flow groove in the spring seat constitute an additional bypass regulating flow channel.

9. The damping regulating valve according to claim 2, characterized in that: The slider and valve stem are integrated into one piece.

Images