Rotary high-speed switch valve driven by ultrasonic motor

Abstract

The invention discloses a rotary high-speed switch valve driven by an ultrasonic motor. The rotary high-speed switch valve comprises a valve body, an upper valve element, a valve plate and a lower valve element. The upper valve core and the lower valve core are fixed in the valve body; the valve plate is arranged in the valve body, located between the upper valve element and the lower valve element and capable of rotating. The valve body is provided with an oil inlet, an oil return port and an oil outlet; the upper valve element is provided with at least one oil inlet channel. The lower valve element is provided with at least one oil outlet channel. The valve plate is provided with at least one opening channel and at least one closing channel; the oil inlet end of the oil inlet channel is communicated with the oil inlet; the oil outlet end of the oil outlet channel is communicated with the oil outlet; the oil inlet end of the opening channel corresponds to the oil outlet end of the oil inlet channel, and the oil outlet end of the opening channel corresponds to the oil inlet end of the oil outlet channel; the oil inlet end of the closing channel corresponds to the oil outlet end of the oil inlet channel, and the oil outlet end of the closing channel corresponds to the oil return opening. The invention has the advantages of no hysteresis effect, simple structure and long service life, and can be used in magnetic sensitive occasions and large-flow, high-pressure and high-frequency response occasions.

Description

Technical Field

[0001] The present invention belongs to the technical field of on-off valves, and relates to a hydraulic transmission control element, an on-off valve, and particularly to a rotary high-speed on-off valve driven by an ultrasonic motor. Background Art

[0002] High-speed on-off valves are widely used in hydraulic systems and are key actuators in many control systems. At present, most domestic and foreign high-speed on-off valves adopt two-position two-way or two-position three-way electromagnetic high-speed on-off valves, which quickly change the position of the valve core through electromagnetic force to achieve flow path switching, thereby achieving the purpose of opening and closing. They are characterized by small size, fast response speed, flexible control, simple structure, low price, etc. However, limited by the energy conversion efficiency, in large-flow or high-pressure scenarios, the electromagnetic force is difficult to overcome the hydrodynamic force, and multi-stage valves or pilot structures are required. Dead zones, non-linearity, and delays need to be compensated, and the computing power requirements for the controller are relatively high. At the same time, it is not suitable for occasions that are highly sensitive to magnetic fields. Summary of the Invention

[0003] The present invention provides a rotary high-speed on-off valve driven by an ultrasonic motor to overcome the defects of the prior art.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] A rotary high-speed on-off valve driven by an ultrasonic motor includes a valve body, an upper valve core, a valve plate, and a lower valve core; the upper valve core and the lower valve core are both fixed in the valve body, and the upper valve core is located above the lower valve core; the valve plate is arranged in the valve body, between the upper valve core and the lower valve core, and can rotate relative to the valve body with the axis in the up-down direction as the center; the valve body has an oil inlet, an oil return port, and an oil outlet; the upper valve core has at least one oil inlet channel; the lower valve core has at least one oil outlet channel; the valve plate has at least one open channel and at least one closed channel; the number of the oil inlet channels, the open channels, and the oil outlet channels are equal and correspond one by one, and the number of the oil inlet channels is equal to the number of the closed channels and corresponds one by one; the oil inlet end of the oil inlet channel communicates with the oil inlet; the oil outlet end of the oil outlet channel communicates with the oil outlet; the oil inlet end of the open channel corresponds to the oil outlet end of the oil inlet channel, and the oil outlet end corresponds to the oil inlet end of the oil outlet channel; the oil inlet end of the closed channel corresponds to the oil outlet end of the oil inlet channel, and the oil outlet end corresponds to the oil return port; when the valve plate rotates to make the open channel communicate with the oil inlet channel and the oil outlet channel, the high-speed on-off valve opens; when the valve plate rotates to make the closed channel communicate with the oil inlet channel and the oil return port, the high-speed on-off valve closes.

[0006] To optimize the above technical solution, the specific measures taken further include:

[0007] Further, the oil inlet and the oil return port are both located on the side of the valve body; the oil inlet end of the oil inlet passage is located on the side of the upper spool, and the oil outlet end is located on the bottom surface of the upper spool; the oil inlet end of the opening passage is located on the top surface of the valve plate, and the oil outlet end is located on the bottom surface of the valve plate; the oil inlet end of the closing passage is located on the top surface of the valve plate, and the oil outlet end is located on the side of the valve plate; the oil inlet end of the oil outlet passage is located on the side of the lower spool.

[0008] Further, the oil outlet is located at the bottom of the valve body; the oil outlet end of the oil outlet passage is located on the bottom surface of the lower spool; when the number of oil outlet passages is more than one, the oil outlet ends of multiple oil outlet passages are combined and overlapped.

[0009] Further, the oil inlet passage sequentially includes a horizontal section and a vertical section from top to bottom; the opening passage is a vertical passage; the closing passage sequentially includes a vertical section and a horizontal section from top to bottom; the oil outlet passage sequentially includes a first vertical section, a horizontal section, and a second vertical section from top to bottom.

[0010] Further, the cross-section of the horizontal section of the oil inlet passage is circular, and the cross-section of the vertical section is fan-shaped; the cross-section of the opening passage is fan-shaped; the cross-section of the vertical section of the closing passage is fan-shaped, and the cross-section of the horizontal section is circular; the cross-section of the first vertical section of the oil outlet passage is fan-shaped, the horizontal section is circular, and the cross-section of the second vertical section is circular.

[0011] Further, a circle of oil inlet guide grooves is provided on the side of the upper spool, the oil inlet is communicated with the guide grooves, and the oil inlet end of the oil inlet passage is opened in the oil inlet guide grooves; a circle of oil return guide grooves is provided on the side of the valve plate, the oil return port is communicated with the guide grooves, and the oil outlet end of the closing passage is opened in the oil return guide grooves.

[0012] Further, the number of the oil inlet passage, the oil outlet passage, the opening passage, and the closing passage is two; the two oil inlet passages are symmetrically distributed in the upper spool, and the angular distance is 180°; the two oil outlet passages are symmetrically distributed in the lower spool, and the angular distance is 180°; the two opening passages and the two closing passages are symmetrically distributed in the valve plate, and the angular distances are both 180°.

[0013] Further, it further includes an ultrasonic motor and a transmission shaft; the transmission shaft is vertically arranged at the center of the upper spool through a deep groove ball bearing; the ultrasonic motor is fixed on the top of the valve body, and the output shaft extends into the valve body and is fixedly connected to the upper end of the transmission shaft; the lower end of the transmission shaft is fixedly connected to the valve plate; the ultrasonic motor drives the valve plate to rotate through the transmission shaft.

[0014] Further, the upper end and the lower end of the valve plate are coaxially connected to the upper spool and the lower spool through thrust ball bearings.

[0015] Further, the valve body is composed of a cylindrical main body and upper and lower end covers fixed on the upper and lower ends thereof.

[0016] The beneficial effects of the present invention are as follows: The present invention provides a rotary high-speed switching valve driven by an ultrasonic motor. The valve plate is rotated by the ultrasonic motor to switch the oil circuit, and at the same time, the requirements of high frequency and large flow rate of the high-speed switching valve are realized. Specifically, an upper valve core, a valve plate and a lower valve core are arranged in the valve body. The valve plate is rotated by the ultrasonic motor to connect the opening channel in the valve plate with the oil inlet channel of the upper valve core and the oil outlet channel of the lower valve core, so as to open the high-speed switching valve, or connect the closing channel in the valve plate with the oil inlet channel of the upper valve core to close the high-speed switching valve. The present invention has no hysteresis effect, can be used in magnetic-sensitive occasions, takes into account large flow rate, high pressure and high-frequency response occasions, and has a simple structure and a long service life. Description of the Drawings

[0017] Figure 1 is a schematic cross-sectional structure diagram of the high-speed switching valve of the present invention in the open state;

[0018] Figure 2 is a schematic cross-sectional structure diagram of the high-speed switching valve of the present invention in the closed state;

[0019] Figure 3a is the front view of the upper valve core of the high-speed switching valve of the present invention;

[0020] Figure 3b is Figure 3a the A-A sectional view of

[0021] Figure 4a is the front view of the valve plate of the high-speed switching valve of the present invention;

[0022] Figure 4b is Figure 4a the B-B sectional view of

[0023] Figure 5a is the corresponding diagram of the flow channel of the high-speed switching valve of the present invention in the open state;

[0024] Figure 5b is the corresponding diagram of the flow channel of the high-speed switching valve of the present invention in the state between open and closed (the valve plate rotates 45°);

[0025] Figure 5c is the corresponding diagram of the flow channel of the high-speed switching valve of the present invention in the closed state;

[0026] Figure 6 is the application principle diagram of the high-speed switching valve of the present invention;

[0027] The reference signs in the drawings are: 1, valve body; 11, oil inlet; 12, oil return port; 13, oil outlet; 14, body; 15, upper end cover; 16, lower end cover; 2, upper spool; 21, oil inlet passage; 22, oil inlet guide groove; 3, valve plate; 31, opening passage; 32, closing passage; 33, oil return guide groove; 34, thrust ball bearing; 4, lower spool; 41, oil outlet passage; 5, ultrasonic motor; 6, transmission shaft; 61, deep groove ball bearing. Detailed implementation manners

[0028] The following will describe the detailed implementation manners of the present invention with reference to the drawings.

[0029] As Figure 1 and Figure 2 shown, the present invention provides a rotary high-speed on-off valve driven by an ultrasonic motor, including a valve body 1, an upper spool 2, a valve plate 3 and a lower spool 4.

[0030] Both the upper spool 2 and the lower spool 4 are fixed in the valve body 1, and the upper spool 2 is located above the lower spool 4. The valve plate 3 is arranged in the valve body 1, between the upper spool 2 and the lower spool 4, and can rotate relative to the valve body 1 with the axis in the up-down direction as the center.

[0031] As Figures 1 to 4b shown, the valve body 1 has an oil inlet 11, an oil return port 12 and an oil outlet 13. The upper spool 2 has at least one oil inlet passage 21. The lower spool 4 has at least one oil outlet passage 41. The valve plate 3 has at least one opening passage 31 and at least one closing passage 32. The numbers of the oil inlet passage 21, the opening passage 31 and the oil outlet passage 41 are equal and correspond to each other one by one, and the numbers of the oil inlet passage 21 and the closing passage 32 are equal and correspond to each other one by one.

[0032] The oil inlet end of the oil inlet passage 21 communicates with the oil inlet 11. The oil outlet end of the oil outlet passage 41 communicates with the oil outlet 13. The oil inlet end of the opening passage 31 corresponds to the oil outlet end of the oil inlet passage 21, and the oil outlet end corresponds to the oil inlet end of the oil outlet passage 41. The oil inlet end of the closing passage 32 corresponds to the oil outlet end of the oil inlet passage 21, and the oil outlet end corresponds to the oil return port 12.

[0033] As Figures 1 to 5c shown, when the valve plate 3 rotates to make the opening passage 31 communicate with the oil inlet passage 21 of the upper spool 2 and the oil outlet passage 41 of the lower spool 4, that is, the oil inlet 11 communicates with the oil outlet 13 through the oil inlet passage 21, the opening passage and the oil outlet passage 41, the high-speed on-off valve is opened; when the valve plate 3 rotates to make the closing passage 32 communicate with the oil inlet passage 21 of the upper spool 2 and the oil return port 12, that is, the oil inlet 11 communicates with the oil return port 12 through the oil inlet passage 21 and the closing passage 32, the high-speed on-off valve is closed.

[0034] Specifically, as Figure 1 andFigure 2 As shown in the figure, the oil inlet 11 and the oil return port 12 are both located on the side of the valve body 1. The oil inlet end of the oil inlet passage 21 is located on the side of the upper spool 2, and the oil outlet end is located on the bottom surface of the upper spool 2. The oil inlet end of the opening passage 31 is located on the top surface of the valve plate 3, and the oil outlet end is located on the bottom surface of the valve plate 3. The oil inlet end of the closing passage 32 is located on the top surface of the valve plate 3, and the oil outlet end is located on the side of the valve plate 3. The oil inlet end of the oil outlet passage 41 is located on the side of the lower spool 4. The oil outlet 13 is located at the bottom of the valve body 1. The oil outlet end of the oil outlet passage 41 is located on the bottom surface of the lower spool 4. When the number of the oil outlet passages 41 is more than one, the oil outlet ends of the multiple oil outlet passages 41 are combined and overlapped.

[0035] The oil inlet passage 21 sequentially includes a horizontal section and a vertical section from top to bottom. The opening passage 31 is a vertical passage. The closing passage 32 sequentially includes a vertical section and a horizontal section from top to bottom. The oil outlet passage 41 sequentially includes a first vertical section, a horizontal section and a second vertical section from top to bottom.

[0036] As Figures 3a to 4b shown, in a preferred embodiment, the cross-section of the horizontal section of the oil inlet passage 21 is circular, and the cross-section of the vertical section is fan-shaped. The cross-section of the opening passage 31 is fan-shaped. The cross-section of the vertical section of the closing passage 32 is fan-shaped, and the cross-section of the horizontal section is circular. The cross-section of the first vertical section of the oil outlet passage 41 is fan-shaped, the horizontal section is circular, and the cross-section of the second vertical section is circular.

[0037] As Figure 1 and Figure 2 shown, in a preferred embodiment, a circle of oil inlet diversion grooves 22 is provided on the side of the upper spool 2. The oil inlet 11 is communicated with the diversion grooves, and the oil inlet end of the oil inlet passage 21 is opened in the oil inlet diversion grooves 22. A circle of oil return diversion grooves 33 is provided on the side of the valve plate 3. The oil return port 12 is communicated with the diversion grooves, and the oil outlet end of the closing passage 32 is opened in the oil return diversion grooves 33.

[0038] As Figures 1 to 4b shown, in this embodiment, the number of the oil inlet passage 21, the oil outlet passage 41, the opening passage 31 and the closing passage 32 is two. The two oil inlet passages 21 are symmetrically distributed in the upper spool 2, and the angular distance is 180°. The two oil outlet passages 41 are symmetrically distributed in the lower spool 4, and the angular distance is 180°. The two opening passages 31 and the two closing passages 32 are both symmetrically distributed in the valve plate 3, and the angular distances are both 180°, that is, the two opening passages 31 and the two closing passages 32 are alternately distributed in a cross shape.

[0039] Specifically, as Figure 1 and Figure 2 shown, both the upper end and the lower end of the valve plate 3 are coaxially connected to the upper spool 2 and the lower spool 4 through thrust ball bearings 34.

[0040] Specifically, as Figure 1 andFigure 2 As shown, the valve body 1 is composed of a cylindrical main body 14, an upper end cover 15 and a lower end cover 16 which are fixed to the upper and lower ends thereof by screws.

[0041] Regarding the rotation of the valve plate 3, as Figure 1 and Figure 2 shown, the high-speed switching valve further includes an ultrasonic motor 5 and a transmission shaft 6. The transmission shaft 6 is vertically arranged at the center of the upper valve core 2 through a deep groove ball bearing 61. The ultrasonic motor 5 is fixed on the top of the valve body 1, and the output shaft extends into the valve body 1 and is connected and fixed to the upper end of the transmission shaft 6 by a key. The lower end of the transmission shaft 6 is connected and fixed to the valve plate 3 by a spline. The ultrasonic motor 5 drives the valve plate 3 to rotate through the transmission shaft 6.

[0042] As Figures 5a to 6 shown, the working principle of the rotary high-speed switching valve driven by the ultrasonic motor of the present invention is as follows: when the ultrasonic motor 5 receives a control signal input, the ultrasonic motor 5 rotates, thereby driving the valve plate 3 to rotate at high speed through the transmission shaft 6. When the opening channel 31 of the valve plate 3 coincides with the oil inlet channel 21 of the upper valve core 2, the high-speed switching valve is opened, and the hydraulic oil entering the high-speed switching valve from the oil inlet 11 of the valve body 1 fills the oil inlet diversion groove 22 of the upper valve core 2. The hydraulic oil reaches the opening oil channels on both sides of the valve plate 3 from the oil inlet channels on both sides respectively, and finally reaches the oil outlet 13 at the bottom of the valve body 1 through the oil outlet channel 41 of the lower valve core 4 and enters the actuator. When the ultrasonic motor 5 continues to drive the valve plate 3 to rotate by 90°, the closing channel 32 on the valve plate 3 coincides with the oil inlet channel 21 of the upper valve core 2, and the high-speed switching valve is closed. The hydraulic oil entering the high-speed switching valve from the oil inlet 11 of the valve body 1 fills the oil inlet diversion groove 22 of the upper valve core 2. The hydraulic oil reaches the closing channel 32 of the valve plate 3 from the oil channels on both sides respectively, and then converges in the return diversion groove, and finally returns to the fuel tank through the return port of the valve body 1. The ultrasonic motor 5 drives the valve plate 3 to continue rotating, so that the opening channel 31 and the closing channel 32 of the valve plate 3 continuously coincide with the oil inlet flow channel of the upper valve core 2, and the opening and closing are continuously repeated to realize the function of the high-speed switching valve.

[0043] In the present invention, unless otherwise specified, the scientific and technical terms used herein have the meanings commonly understood by those skilled in the art.

[0044] It should be noted that the terms such as "upper", "lower", "left", "right", "front", "rear", etc. cited in the invention are only for the convenience of description and are not used to limit the scope of implementation of the present invention. The change or adjustment of their relative relationship, without substantial change in the technical content, should also be regarded as the scope of implementation of the present invention.

[0045] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A rotary high-speed on-off valve driven by an ultrasonic motor, characterized in that: It includes a valve body, an upper valve core, a valve plate and a lower valve core; The upper valve core and the lower valve core are both fixed in the valve body; the valve plate is arranged in the valve body, located between the upper valve core and the lower valve core, and can rotate relative to the valve body; The valve body has an oil inlet, an oil return port and an oil outlet; The upper valve core has at least one oil inlet channel; the lower valve core has at least one oil outlet channel; the valve plate has at least one open channel and at least one closed channel; the number of oil inlet channels, open channels and oil outlet channels are equal and correspond one to one, and the number of oil inlet channels and closed channels are equal and correspond one to one; The oil inlet end of the oil inlet passage is communicated with the oil inlet port; the oil outlet end of the oil outlet passage is communicated with the oil outlet port; The oil inlet end of the open channel corresponds to the oil outlet end of the oil inlet channel, and the oil outlet end corresponds to the oil inlet end of the oil outlet channel; the oil inlet end of the closed channel corresponds to the oil outlet end of the oil inlet channel, and the oil outlet end corresponds to the oil return port; When the valve plate rotates to open the channel and connects the oil inlet channel and the oil outlet channel, the high-speed switch valve opens; When the valve plate rotates to close the passage and connect the oil inlet passage and the oil return port, the high-speed switch valve is closed.

2. The ultrasonic motor driven rotary high-speed switch valve according to claim 1, characterized in that: The oil inlet and the oil return port are both located on the side of the valve body; The oil inlet end of the oil inlet channel is located on the side of the upper valve core, and the oil outlet end is located on the bottom surface of the upper valve core; The oil inlet end of the open channel is located on the top surface of the valve plate, and the oil outlet end is located on the bottom surface of the valve plate; The oil inlet end of the closing channel is located on the top surface of the valve plate, and the oil outlet end is located on the side surface of the valve plate; The oil inlet end of the oil outlet channel is located on the side of the lower valve core.

3. The ultrasonic motor driven rotary high-speed switch valve according to claim 2, characterized in that: The oil outlet is located at the bottom of the valve body; The oil outlet end of the oil outlet channel is located on the bottom surface of the lower valve core; when the number of the oil outlet channels is greater than one, the oil outlet ends of the multiple oil outlet channels are combined and overlapped.

4. The ultrasonic motor driven rotary high-speed switch valve according to claim 3, characterized in that: The oil inlet passage includes a transverse section and a vertical section from top to bottom; The open channel is a vertical channel; The closing channel includes a vertical section and a horizontal section from top to bottom; The oil outlet passage comprises, from top to bottom, a first vertical section, a transverse section and a second vertical section.

5. The ultrasonic motor driven rotary high-speed switch valve according to claim 4 is characterized in that: The oil inlet passage has a circular cross section in the transverse section and a fan-shaped cross section in the vertical section; The cross section of the open channel is fan-shaped; The vertical section of the closing channel is fan-shaped, and the horizontal section is circular; The first vertical section of the oil outlet channel has a fan-shaped cross section, the transverse section has a circular cross section, and the second vertical section has a circular cross section.

6. The ultrasonic motor driven rotary high-speed switch valve according to claim 2, characterized in that: A circle of oil inlet guide groove is provided on the side of the upper valve core, the oil inlet port is connected with the guide groove, and the oil inlet end of the oil inlet channel is opened in the oil inlet guide groove; A circle of oil return guide grooves is arranged on the side of the valve plate, the oil return port is communicated with the guide grooves, and the oil outlet end of the closing channel is arranged in the oil return guide grooves.

7. The ultrasonic motor driven rotary high-speed switch valve according to claim 1, characterized in that: The number of the oil inlet channel, the oil outlet channel, the opening channel and the closing channel is two; Two oil inlet channels are symmetrically distributed in the upper valve core, with an angular distance of 180°; Two oil outlet channels are symmetrically distributed in the lower valve core, with an angular distance of 180°; The two opening channels and the two closing channels are symmetrically distributed in the valve plate, and the angular distances are both 180°.

8. The ultrasonic motor driven rotary high-speed on-off valve according to claim 1, characterized in that: Also includes an ultrasonic motor and a drive shaft; The transmission shaft is vertically arranged at the center of the upper valve core through a deep groove ball bearing; The ultrasonic motor is fixed on the top of the valve body, and the output shaft extends into the valve body and is connected and fixed to the upper end of the transmission shaft; The lower end of the transmission shaft is connected and fixed to the valve plate; The ultrasonic motor drives the valve plate to rotate through the transmission shaft.

9. The ultrasonic motor driven rotary high-speed switch valve according to claim 1, characterized in that: The upper end and the lower end of the valve plate are coaxially connected with the upper valve core and the lower valve core through a thrust ball bearing.

10. The ultrasonic motor driven rotary high-speed switch valve according to claim 1, characterized in that: The valve body is composed of a cylindrical main body and an upper end cover and a lower end cover fixed on the upper and lower ends thereof.

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