High-speed switch valve directly driven by ultrasonic motor

Abstract

The invention relates to the technical field of switch valves, in particular to an ultrasonic motor direct-driven high-speed switch valve which comprises a driving mechanism. The valve further comprises a valve body, and the driving mechanism is installed on the valve body. The driving mechanism provides power for the valve body, and the valve body adjusts the flow direction of hydraulic oil. The valve body is mounted on the conveying pipeline, the valve body is driven to operate through the driving mechanism during use, hydraulic oil enters the valve body, the flow direction of the hydraulic oil is adjusted through operation of the valve body, the hydraulic oil is conveyed into different pipelines, and therefore the practicability of equipment is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of switching valves, and particularly to an ultrasonic motor direct-drive high-speed switching valve. Background Art

[0002] High-speed switching valves are widely used in hydraulic systems and are key actuating components in many control systems. Currently, most high-speed switching valves at home and abroad are two-position two-way or two-position three-way electromagnetic high-speed switching valves. For example, the electromagnetic switching valve disclosed in the invention patent with the publication number CN108138984B and an electromagnetic drive switching valve disclosed in the invention patent with the publication number CN110748657A control the displacement of the valve core by applying a voltage to the coil to generate a magnetic field, so as to achieve the purpose of opening and closing. The characteristics are small size, fast response speed, flexible control, simple structure, strong anti-pollution ability, high reliability, low price, and good cooperation with electronic circuits.

[0003] However, due to limitations such as materials and electromagnetic force, electromagnetic high-speed switching valves cannot balance large flow rate and high frequency response, and are not suitable for occasions highly sensitive to magnetic fields, resulting in poor practicability. Therefore, there is an urgent need for an ultrasonic motor direct-drive high-speed switching valve to improve the above problems. Summary of the Invention

[0004] To solve the above technical problems, the present invention provides an ultrasonic motor direct-drive high-speed switching valve that installs a valve body on a conveying pipeline. During use, the valve body is driven to operate by a driving mechanism, so that hydraulic oil enters the valve body, and then the flow direction of the hydraulic oil is adjusted through the operation of the valve body, and the hydraulic oil is conveyed to different pipelines, thereby improving the practicability of the equipment.

[0005] An ultrasonic motor direct-drive high-speed switching valve of the present invention includes a driving mechanism; it also includes a valve body, and the driving mechanism is installed on the valve body; The driving mechanism provides power for the valve body, and the valve body adjusts the flow direction of the hydraulic oil; The valve body is installed on a conveying pipeline. During use, the valve body is driven to operate by a driving mechanism, so that hydraulic oil enters the valve body, and then the flow direction of the hydraulic oil is adjusted through the operation of the valve body, and the hydraulic oil is conveyed to different pipelines, thereby improving the practicability of the equipment.

[0006] Preferably, the valve body includes a lower valve cover, a valve body, a first thrust ball bearing, an upper valve cover, a drive shaft one, an upper valve plate, a second thrust ball bearing, a lower valve plate, a third thrust ball bearing, a drive shaft two, and a lower valve core. The first thrust ball bearing, the upper valve cover, the drive shaft one, the upper valve plate, the second thrust ball bearing, the lower valve plate, the third thrust ball bearing, the drive shaft two, and the lower valve core are all located in the valve body. The lower valve cover and the upper valve cover are respectively fixedly installed at the bottom and top of the valve body by screws, and the lower valve cover and the upper valve cover are respectively connected to the lower valve core and the upper valve cover. The first thrust ball bearing is sleeved on the upper valve cover and is coaxially connected to the upper valve cover. The third thrust ball bearing is sleeved on the lower valve core and is coaxially connected to the lower valve core. The upper valve plate and the lower valve plate are both installed between the upper valve cover and the lower valve core, and the upper valve plate is located below the lower valve plate. The second thrust ball bearing is sleeved on the upper valve plate and the lower valve plate. One ends of the drive shaft one and the drive shaft two are both installed on the drive mechanism. The other ends of the drive shaft one and the drive shaft two respectively pass through the upper valve cover and the lower valve core, and the other end of the drive shaft one is spline-connected to the upper valve plate, and the other end of the drive shaft two is spline-connected to the lower valve plate; Axially, the top of the upper valve cover is provided with a first upper circular hole, a second upper circular hole, a third upper circular hole, and a fourth upper circular hole. The bottom of the upper valve cover is provided with a first upper sector window, a second upper sector window, a third upper sector window, and a fourth upper sector window, and the first upper circular hole, the second upper circular hole, the third upper circular hole, and the fourth upper circular hole are respectively communicated with the first upper sector window, the second upper sector window, the third upper sector window, and the fourth upper sector window of the sector window; Axially, the bottom of the lower valve core is provided with a first lower circular hole, a second lower circular hole, a third lower circular hole, and a fourth lower circular hole. The top of the lower valve core is provided with a first lower sector window, a second lower sector window, a third lower sector window, and a fourth lower sector window, and the first lower circular hole, the second lower circular hole, the third lower circular hole, and the fourth lower circular hole are respectively communicated with the first lower sector window, the second lower sector window, the third lower sector window, and the fourth lower sector window of the lower sector window; The upper valve plate is provided with a first upper sector window, a second upper sector window, a third upper sector window, and a fourth upper sector window, and the sizes and positions of the first upper sector window, the second upper sector window, the third upper sector window, and the fourth upper sector window correspond to those of the first upper sector window, the second upper sector window, the third upper sector window, and the fourth upper sector window on the upper valve cover; The lower valve plate is provided with a first lower sector window, a second lower sector window, a third lower sector window, and a fourth lower sector window, and the sizes and positions of the first lower sector window, the second lower sector window, the third lower sector window, and the fourth lower sector window correspond to those of the first lower sector window, the second lower sector window, the third lower sector window, and the fourth lower sector window on the lower valve core; At the top of the valve body, a through hole one and a through hole two are respectively opened corresponding to the upper round hole two and the upper round hole four. At the bottom of the valve body, a through hole three and a through hole four are respectively opened corresponding to the lower round hole two and the lower round hole four. And a Q is opened between the through hole two and the upper round hole four, connecting the through hole two, the upper round hole four and the through hole four through Q. By driving mechanisms respectively driving the transmission shaft one and the transmission shaft two to rotate, the upper valve plate and the lower valve plate rotate at high speed. And during the high-speed rotation of the upper valve plate and the lower valve plate, when the upper sector windows one, two, three and four at the bottom of the upper valve cover coincide with the four sector windows of the upper valve plate, namely the upper sector windows one, two, three and four, the upper valve cover opens. After the through hole two is filled with oil, the hydraulic oil will reach the upper round hole four and the through hole four, and the hydraulic oil entering the upper valve cover can be introduced into the upper sector window four of 1. At this time, the lower sector windows one, two, three and four at the bottom of the lower valve core do not coincide with the lower sector windows one, two, three and four on the lower valve plate, and the lower valve core closes. The hydraulic oil entering between the upper valve plate and the lower valve plate can only enter the upper sector window two of the upper valve cover from the upper sector window four of the upper valve plate, and thus is discharged to the external pipeline through the upper round hole two and the through hole one and enters the actuator. At this time, the high-speed switching valve is in the open state. When the upper sector windows one, two, three and four at the bottom of the upper valve cover do not coincide with the upper sector windows one, two, three and four on the upper valve plate, the upper valve cover closes, and the upper round hole four cannot be filled with oil. At this time, the lower sector windows one, two, three and four at the bottom of the lower valve core coincide with the lower sector windows one, two, three and four on the lower valve plate, and the lower valve core opens. The oil inlet through hole two is connected to the oil outlet through hole three and the lower round hole two, and the hydraulic oil enters the lower valve core through the through hole two, Q and the through hole four. Since the upper valve cover is closed, the hydraulic oil finally passes through the lower sector window four and the lower sector window two of the lower valve core and returns to the oil tank at the lower round hole two and the through hole three. At this time, the high-speed switching valve is in the closed state, thereby improving the practicability of the equipment.

[0007] Preferably, the driving mechanisms include an ultrasonic motor one, an ultrasonic motor two, a locking key one and a locking key two. The ultrasonic motor one is installed on the lower valve cover, and the ultrasonic motor two is installed on the upper valve cover. And the output shaft of the ultrasonic motor one is connected to one end of the transmission shaft two through the locking key two, and the output shaft of the ultrasonic motor two is connected to one end of the transmission shaft one through the locking key one. By turning on the ultrasonic motor one, the transmission shaft two is driven to rotate, and by turning on the ultrasonic motor two, the transmission shaft one is driven to rotate, thereby improving the practicability of the equipment.

[0008] Preferably, sealing rings I are provided respectively between the upper and lower parts of the first through hole and the second upper circular hole, between the upper and lower parts of the second through hole and the fourth upper circular hole, between the upper and lower parts of the third through hole and the second lower circular hole, and between the upper and lower parts of the fourth through hole and the fourth lower circular hole, so as to improve the sealing effect of the device.

[0009] Preferably, a deep groove ball bearing I is provided between the upper valve cover and the first transmission shaft, and a deep groove ball bearing II is provided between the second transmission shaft and the lower valve core. In addition, sealing rings II are provided respectively between the upper valve cover and the deep groove ball bearing I, and between the lower valve core and the deep groove ball bearing II, so as to improve the smoothness of the device operation.

[0010] Preferably, the first ultrasonic motor is fixedly installed on the lower valve cover by screws, and the second ultrasonic motor is fixedly installed on the upper valve cover by screws, so as to improve the convenience of device installation and disassembly.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: through the high-speed rotation of the ultrasonic motors, the opening and closing of the valve core are continuously repeated to realize the function of a high-speed on-off valve. Moreover, it can be used in magnetically sensitive occasions, while taking into account large flow rates and high frequency responses. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is the exploded structural schematic diagram of the present invention; Figure 2 is the axonometric structural schematic diagram of the present invention; Figure 3 is the front sectional structural schematic diagram of the present invention; Figure 4 is the front sectional state structural schematic diagram of the present invention when it is closed; Figure 5 is the top sectional structural schematic diagram of the present invention; Figure 6 is the top structural schematic diagram of the present invention after removing the ultrasonic motors; Figure 7 is the top structural schematic diagram of the upper valve plate of the present invention; Figure 8 is the corresponding structural schematic diagram of the flow channel when the upper valve core and the valve plate of the present invention overlap; Figure 9 is the corresponding structural schematic diagram of the flow channel when the valve plate of the present invention rotates by 22.5°; Figure 10 is the corresponding structural schematic diagram of the flow channel when the valve plate of the present invention rotates by 45°; Figure 11 is the corresponding structural schematic diagram of the flow channel when the lower valve core and the valve plate of the present invention overlap.

[0013] Reference numerals in the drawings: 1, the first ultrasonic motor; 2, the lower valve cover; 3, the valve body; 4, the first thrust ball bearing; 5, the upper valve cover; 6, the second ultrasonic motor; 7, the first locking key; 8, the first deep groove ball bearing; 9, the upper valve cover; 10, the first transmission shaft; 11, the upper valve plate; 12, the second thrust ball bearing; 13, the lower valve plate; 14, the third thrust ball bearing; 15, the second transmission shaft; 16, the lower valve core; 17, the second deep groove ball bearing; 18, the second locking key; a2, the first upper circular hole; b2, the second upper circular hole; c2, the third upper circular hole; d2, the fourth upper circular hole; e1, the first upper sector window; f1, the second upper sector window; g1, the third upper sector window; h1, the fourth upper sector window; E1, the first upper sector window; F1, the second upper sector window; G1, the third upper sector window; H1, the fourth upper sector window; i2, the first lower circular hole; j2, the second lower circular hole; k2, the third lower circular hole; m2, the fourth lower circular hole; e2, the first lower sector window; f2, the second lower sector window; g2, the third lower sector window; h2, the fourth lower sector window; E2, the first lower sector window; F2, the second lower sector window; G2, the third lower sector window; H2, the fourth lower sector window; b1, the first through hole; d1, the second through hole; j1, the third through hole; m1, the fourth through hole; Q, the oil passage. Detailed implementation manners

[0014] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided so that the disclosure of the present invention is thorough and complete.

[0015] Embodiment 1: As Figures 1 to 11 shown, a direct-drive high-speed on-off valve of an ultrasonic motor includes a driving mechanism; and further includes a valve body, and the driving mechanism is installed on the valve body; The driving mechanism provides power for the valve body, and the valve body adjusts the flow direction of the hydraulic oil; The valve body includes a lower valve cover 2, a valve body 3, a first thrust ball bearing 4, an upper valve cover 5, an upper valve cover 9, a first transmission shaft 10, an upper valve plate 11, a second thrust ball bearing 12, a lower valve plate 13, a third thrust ball bearing 14, a second transmission shaft 15, and a lower valve core 16. The first thrust ball bearing 4, the upper valve cover 9, the first transmission shaft 10, the upper valve plate 11, the second thrust ball bearing 12, the lower valve plate 13, the third thrust ball bearing 14, the second transmission shaft 15, and the lower valve core 16 are all located in the valve body 3. The lower valve cover 2 and the upper valve cover 5 are respectively fixedly installed at the bottom and top of the valve body 3 by screws, and the lower valve cover 2 and the upper valve cover 5 are respectively connected to the lower valve core 16 and the upper valve cover 9. The first thrust ball bearing 4 is sleeved on the upper valve cover 9 and is coaxially connected to the upper valve cover 9. The third thrust ball bearing 14 is sleeved on the lower valve core 16 and is coaxially connected to the lower valve core 16. The upper valve plate 11 and the lower valve plate 13 are both installed between the upper valve cover 9 and the lower valve core 16, and the upper valve plate 11 is located below the lower valve plate 13. The second thrust ball bearing 12 is sleeved on the upper valve plate 11 and the lower valve plate 13. One ends of the first transmission shaft 10 and the second transmission shaft 15 are both installed on the driving mechanism. The other ends of the first transmission shaft 10 and the second transmission shaft 15 respectively pass through the upper valve cover 9 and the lower valve core 16, and the other end of the first transmission shaft 10 is spline-connected to the upper valve plate 11, and the other end of the second transmission shaft 15 is spline-connected to the lower valve plate 13; Axially, at the top of the upper valve cover 9, there are a first upper circular hole a2, a second upper circular hole b2, a third upper circular hole c2, and a fourth upper circular hole d2. At the bottom of the upper valve cover 9, there are a first upper sector window e1, a second upper sector window f1, a third upper sector window g1, and a fourth upper sector window h1, and the first upper circular hole a2, the second upper circular hole b2, the third upper circular hole c2, and the fourth upper circular hole d2 are respectively communicated with the first upper sector window e1, the second upper sector window f1, the third upper sector window g1, and the fourth upper sector window h1; Axially, at the bottom of the lower valve core 16, there are a first lower circular hole i2, a second lower circular hole j2, a third lower circular hole k2, and a fourth lower circular hole m2. At the top of the lower valve core 16, there are a first lower sector window e2, a second lower sector window f2, a third lower sector window g2, and a fourth lower sector window h2, and the first lower circular hole i2, the second lower circular hole j2, the third lower circular hole k2, and the fourth lower circular hole m2 are respectively communicated with the first lower sector window e2, the second lower sector window f2, the third lower sector window g2, and the fourth lower sector window h2; On the upper valve plate 11, there are a first upper sector window e1, a second upper sector window f1, a third upper sector window g1, and a fourth upper sector window h1, and the sizes and positions of the first upper sector window e1, the second upper sector window f1, the third upper sector window g1, and the fourth upper sector window h1 correspond to those of the first upper sector window e1, the second upper sector window f1, the third upper sector window g1, and the fourth upper sector window h1 on the upper valve cover 9; The lower valve plate 13 is provided with a first lower sector window e2, a second lower sector window f2, a third lower sector window g2, and a fourth lower sector window h2. The sizes and positions of the first lower sector window e2, the second lower sector window f2, the third lower sector window g2, and the fourth lower sector window h2 correspond to those of the first lower sector window e2, the second lower sector window f2, the third lower sector window g2, and the fourth lower sector window h2 on the lower valve core 16; At the top of the valve body 3, a first through hole b1 and a second through hole d1 are respectively provided corresponding to the second upper round hole b2 and the fourth upper round hole d2. At the bottom of the valve body 3, a third through hole j1 and a fourth through hole m1 are respectively provided corresponding to the second lower round hole j2 and the fourth lower round hole m2. And a Q is formed between the second through hole d1 and the fourth upper round hole d2, connecting the second through hole d1, the fourth upper round hole d2, and the fourth through hole m1 through Q; The driving mechanism includes a first ultrasonic motor 1, a second ultrasonic motor 6, a first locking key 7, and a second locking key 18. The first ultrasonic motor 1 is installed on the lower valve cover 2, the second ultrasonic motor 6 is installed on the upper valve cover 5, and the output shaft of the first ultrasonic motor 1 is connected to one end of the second transmission shaft 15 through the second locking key 18, and the output shaft of the second ultrasonic motor 6 is connected to one end of the first transmission shaft 10 through the first locking key 7; Sealing rings one are provided above and below the first through hole b1 and the second upper round hole b2, above and below the second through hole d1 and the fourth upper round hole d2, above and below the third through hole j1 and the second lower round hole j2, and above and below the fourth through hole m1 and the fourth lower round hole m2; A first deep groove ball bearing 8 is provided between the upper valve cover 9 and the first transmission shaft 10, and a second deep groove ball bearing 17 is provided between the second transmission shaft 15 and the lower valve core 16. Sealing rings two are provided between the upper valve cover 9 and the first deep groove ball bearing 8, and between the lower valve core 16 and the second deep groove ball bearing 17; The first ultrasonic motor 1 is fixedly installed on the lower valve cover 2 with screws, and the second ultrasonic motor 6 is fixedly installed on the upper valve cover 5 with screws; The drive shafts 10 and 15 are respectively rotated by the ultrasonic motor 1 and the ultrasonic motor 6, causing the upper valve plate 11 and the lower valve plate 13 to rotate at high speed. During the high-speed rotation of the upper valve plate 11 and the lower valve plate 13, when the upper sector window 1 e1, the upper sector window 2 f1, the upper sector window 3 g1, and the upper sector window 4 h1 at the bottom of the upper valve cover 9 coincide with the four sector windows on the upper valve plate 11, namely the upper sector window 1 e1, the upper sector window 2 f1, the upper sector window 3 g1, and the upper sector window 4 h1, the upper valve cover 9 opens. After the oil enters through the through hole 2 d1, the hydraulic oil will reach the upper round hole 4 d2 and the through hole 4 m1. The hydraulic oil entering the upper valve cover 9 can then be introduced into the upper sector window 4 h1 of 1. At this time, the lower sector window 1 e2, the lower sector window 2 f2, the lower sector window 3 g2, and the lower sector window 4 h2 at the bottom of the lower spool 16 do not coincide with the lower sector window 1 e2, the lower sector window 2 f2, the lower sector window 3 g2, and the lower sector window 4 h2 on the lower valve plate 13, and the lower spool 16 closes. The hydraulic oil entering between the upper valve plate 11 and the lower valve plate 13 can only enter the upper sector window 2 f1 of the upper valve cover 9 from the upper sector window 4 h1 of the upper valve plate 11, and thus is discharged to the external pipeline through the upper round hole 2 b2 and the through hole 1 b1 and enters the actuator. At this time, the high-speed switching valve is in the open state; when the upper sector window 1 e1, the upper sector window 2 f1, the upper sector window 3 g1, and the upper sector window 4 h1 at the bottom of the upper valve cover 9 do not coincide with the upper sector window 1 e1, the upper sector window 2 f1, the upper sector window 3 g1, and the upper sector window 4 h1 on the upper valve plate 11, the upper valve cover 9 closes, and the upper round hole 4 d2 cannot be filled with oil. At this time, the lower sector window 1 e2, the lower sector window 2 f2, the lower sector window 3 g2, and the lower sector window 4 h2 at the bottom of the lower spool 16 coincide with the lower sector window 1 e2, the lower sector window 2 f2, the lower sector window 3 g2, and the lower sector window 4 h2 on the lower valve plate 13, the lower spool 16 opens, and the oil inlet through hole 2 d1 is connected to the oil outlet through hole 3 j1 and the lower round hole 2 j2. The hydraulic oil enters the lower spool 16 through the through hole 2 d1, Q, and the through hole 4 m1. Since the upper valve cover 9 is closed, the hydraulic oil finally passes through the lower sector window 4 h2 and the lower sector window 2 f2 of the lower spool 16 and returns to the fuel tank at the lower round hole 2 j2 and the through hole 3 j1. At this time, the high-speed switching valve is in the closed state, thereby improving the practicality of the equipment.

[0016] For the ultrasonic motor direct drive type high-speed switching valve of the present invention, its installation method, connection method, or setting method are all common mechanical methods, and any implementation that can achieve its beneficial effects is acceptable; the ultrasonic motor 1 and the ultrasonic motor 6 of the ultrasonic motor direct drive type high-speed switching valve of the present invention are purchased on the market. Those skilled in the art only need to install and operate according to the attached user manual, without the need for creative labor from those skilled in the art.

[0017] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A direct-drive high-speed on-off valve for an ultrasonic motor, comprising a driving mechanism; characterized in that, It further includes a valve body, and the driving mechanism is installed on the valve body; The driving mechanism provides power for the valve body, and the valve body adjusts the flow direction of the hydraulic oil.

2. The direct-drive high-speed on-off valve of an ultrasonic motor according to claim 1, characterized in that The valve body includes a lower valve cover (2), a valve body (3), a first thrust ball bearing (4), an upper valve cover (5), an upper valve cover (9), a first transmission shaft (10), an upper valve plate (11), a second thrust ball bearing (12), a lower valve plate (13), a third thrust ball bearing (14), a second transmission shaft (15) and a lower valve core (16). The first thrust ball bearing (4), the upper valve cover (9), the first transmission shaft (10), the upper valve plate (11), the second thrust ball bearing (12), the lower valve plate (13), the third thrust ball bearing (14), the second transmission shaft (15) and the lower valve core (16) are all located in the valve body (3). The lower valve cover (2) and the upper valve cover (5) are respectively fixedly installed at the bottom and top of the valve body (3) by screws, and the lower valve cover (2) and the upper valve cover (5) are respectively connected to the lower valve core (16) and the upper valve cover (9). The first thrust ball bearing (4) is sleeved on the upper valve cover (9) and is coaxially connected to the upper valve cover (9). The third thrust ball bearing (14) is sleeved on the lower valve core (16) and is coaxially connected to the lower valve core (16). The upper valve plate (11) and the lower valve plate (13) are both installed between the upper valve cover (9) and the lower valve core (16), and the upper valve plate (11) is located below the lower valve plate (13). The second thrust ball bearing (12) is sleeved on the upper valve plate (11) and the lower valve plate (13). One ends of the first transmission shaft (10) and the second transmission shaft (15) are both installed on the driving mechanism. The other ends of the first transmission shaft (10) and the second transmission shaft (15) respectively pass through the upper valve cover (9) and the lower valve core (16), and the other end of the first transmission shaft (10) is spline-connected to the upper valve plate (11), and the other end of the second transmission shaft (15) is spline-connected to the lower valve plate (13); Axially, a first upper circular hole (a2), a second upper circular hole (b2), a third upper circular hole (c2) and a fourth upper circular hole (d2) are opened at the top of the upper valve cover (9). At the bottom of the upper valve cover (9), a first upper sector window (e1), a second upper sector window (f1), a third upper sector window (g1) and a fourth upper sector window (h1) are opened, and the first upper circular hole (a2), the second upper circular hole (b2), the third upper circular hole (c2) and the fourth upper circular hole (d2) are respectively communicated with the first upper sector window (e1), the second upper sector window (f1), the third upper sector window (g1) and the fourth upper sector window (h1); At the bottom of the lower valve core (16), a first lower circular hole (i2), a second lower circular hole (j2), a third lower circular hole (k2), and a fourth lower circular hole (m2) are axially formed. At the top of the lower valve core (16), a first lower sector window (e2), a second lower sector window (f2), a third lower sector window (g2), and a fourth lower sector window (h2) are formed. Moreover, the first lower circular hole (i2), the second lower circular hole (j2), the third lower circular hole (k2), and the fourth lower circular hole (m2) are respectively communicated with the first lower sector window (e2), the second lower sector window (f2), the third lower sector window (g2), and the fourth lower sector window (h2). On the upper valve plate (11), a first upper sector window (e1), a second upper sector window (f1), a third upper sector window (g1), and a fourth upper sector window (h1) are formed. Moreover, the sizes and positions of the first upper sector window (e1), the second upper sector window (f1), the third upper sector window (g1), and the fourth upper sector window (h1) correspond to those of the first upper sector window (e1), the second upper sector window (f1), the third upper sector window (g1), and the fourth upper sector window (h1) on the upper valve cover (9). On the lower valve plate (13), a first lower sector window (e2), a second lower sector window (f2), a third lower sector window (g2), and a fourth lower sector window (h2) are formed. Moreover, the sizes and positions of the first lower sector window (e2), the second lower sector window (f2), the third lower sector window (g2), and the fourth lower sector window (h2) correspond to those of the first lower sector window (e2), the second lower sector window (f2), the third lower sector window (g2), and the fourth lower sector window (h2) on the lower valve core (16). At the top of the valve body (3), a first through hole (b1) and a second through hole (d1) are respectively formed corresponding to the second upper circular hole (b2) and the fourth upper circular hole (d2). At the bottom of the valve body (3), a third through hole (j1) and a fourth through hole (m1) are respectively formed corresponding to the second lower circular hole (j2) and the fourth lower circular hole (m2). Moreover, a Q is formed between the second through hole (d1) and the fourth upper circular hole (d2), and the second through hole (d1), the fourth upper circular hole (d2), and the fourth through hole (m1) are connected through Q.

3. The direct-drive high-speed on-off valve of an ultrasonic motor according to claim 2, wherein The driving mechanism includes a first ultrasonic motor (1), a second ultrasonic motor (6), a first locking key (7), and a second locking key (18). The first ultrasonic motor (1) is installed on the lower valve cover (2), the second ultrasonic motor (6) is installed on the upper valve cover (5), and the output shaft of the first ultrasonic motor (1) is connected to one end of the second transmission shaft (15) through the second locking key (18), and the output shaft of the second ultrasonic motor (6) is connected to one end of the first transmission shaft (10) through the first locking key (7).

4. The direct-drive high-speed on-off valve of an ultrasonic motor according to claim 2, characterized in that, Sealing rings are provided above and below the first through hole (b1) and the second upper circular hole (b2), above and below the second through hole (d1) and the fourth upper circular hole (d2), above and below the third through hole (j1) and the second lower circular hole (j2), and above and below the fourth through hole (m1) and the fourth lower circular hole (m2).

5. The direct-drive high-speed on-off valve of an ultrasonic motor according to claim 3, characterized in that A deep groove ball bearing I (8) is arranged between the upper valve cover (9) and the first transmission shaft (10), and a deep groove ball bearing II (17) is arranged between the second transmission shaft (15) and the lower valve core (16). In addition, sealing rings II are arranged between the upper valve cover (9) and the deep groove ball bearing I (8), and between the lower valve core (16) and the deep groove ball bearing II (17).

6. The direct-drive high-speed on-off valve of an ultrasonic motor according to claim 3, characterized in that, The first ultrasonic motor (1) is fixedly installed on the lower valve cover (2) by screws, and the second ultrasonic motor (6) is fixedly installed on the upper valve cover (5) by screws.

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