Stacked electric control fast and slow speed regulating valve

Abstract

According to the stacked type electric control fast and slow speed regulating valve, the fast and slow speed of a P port is achieved through parallel connection of an electromagnetic stop valve and a manual one-way throttle valve, and when the electromagnetic stop valve loses power, oil can rapidly pass through the P port from P0 to P to achieve rapid speed of the P port; when the electromagnetic stop valve is powered on, oil liquid can be adjusted from P0 to P through the manual one-way throttle valve to achieve low speed of a P port, meanwhile, the electromagnetic stop valve is provided with the two-way hydraulic lock part which can be opened through external oil pressure, the electromagnetic stop valve is in a closed state when not opened, and therefore two-way stop and opening according to needs can be achieved. The whole valve is large in speed regulation range and high in speed regulation speed. In addition, the stacked design is adopted, the structure can be greatly simplified, the size is reduced, and maintenance, installation and problem handling are very convenient. After the connecting assembly and the retaining assembly are additionally arranged, the two sandwich valves can be quickly connected through the connecting rod, character heads can be overlapped and expanded according to needs, and compared with a traditional mode that all the sandwich valves are assembled through one screw, the flexibility is higher, and overall disassembly is not needed during overhauling.

Description

Technical Field

[0001] This utility model relates to stacked valves and speed control valves, and in particular to a stacked electrically controlled fast and slow speed control valve. Background Technology

[0002] A speed control valve is a hydraulic control element that regulates the flow rate of fluid, combining rapid response with precise speed regulation. Currently, flow is primarily controlled using a manual one-way throttle valve, with speed adjustment achieved by controlling the opening degree of the manual one-way throttle valve. However, in practical applications, manual adjustment is clearly insufficient for scenarios requiring frequent speed adjustments. Therefore, electronic control is also used, achieving accurate control through signal feedback. However, this method lacks bidirectional shut-off functionality and has a limited speed adjustment range, making it unsuitable for scenarios with large speed adjustment intervals. While multiple valve combinations can achieve the same functionality, this results in complex hydraulic systems, high costs, and large size.

[0003] Therefore, how to achieve a large speed regulation range, bidirectional cutoff, rapid speed regulation, small size, and simple structure are the technical problems that need to be solved. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, the technical problem to be solved by this utility model is to provide a superimposed electronically controlled fast and slow speed regulating valve, which has a large speed regulation range, fast speed, small size and simple structure.

[0005] To achieve the above objectives, this utility model provides a superimposed electronically controlled fast and slow speed regulating valve, including an electromagnetic shut-off valve, a one-way throttle valve, a P port, a P0 port, a first oil passage, a first channel, a second channel, and a third channel. The one-way throttle valve includes a one-way valve and a throttle valve, which are connected in series in the third channel. The oil inlet of the one-way valve is connected to the first oil passage through the first channel, and the oil outlet of the one-way valve is connected to the first oil passage through the second channel.

[0006] The inlet and outlet of the electromagnetic shut-off valve are connected in series on the first oil passage, which is connected to the P port and the P0 port. The electromagnetic shut-off valve includes a bidirectional hydraulic lock part and a conducting part. The bidirectional hydraulic lock part is composed of two check valves connected in opposite series, that is, the inlets of the two check valves are opposite and connected in series.

[0007] As a further improvement of this utility model, it also includes port B, port A, port T, a second oil passage, a third oil passage, and a fourth oil passage, wherein the second oil passage is connected to port B, the third oil passage is connected to port A, and the fourth oil passage is connected to port T.

[0008] As a further improvement of this utility model, it also includes a valve body, which is provided with mounting holes and mounting grooves. The mounting grooves are located on both sides of the mounting holes, and a connecting component is installed in the mounting grooves. The connecting component includes a clamping frame, a clamp, and a rotating shaft. The clamping frame is installed in the mounting groove, and a clamping frame plate is provided on the clamping frame, which closes the mounting groove. The clamping frame is assembled with the rotating shaft, and the clamping component is fitted outside the rotating shaft and is not rotatably assembled with it. The clamping component is provided with a clamping block and a clamping groove. The clamping component is assembled with one end of an elastic band, and the other end of the elastic band is assembled with the clamping frame.

[0009] The clamping block presses against the step to fix the connecting rod in the axial direction. The connecting rod has large ends at both ends, the diameter of which is larger than that of the connecting rod, and the end face of the large end connected to the connecting rod forms a step.

[0010] As a further improvement of this utility model, the clamping frame is also equipped with an inner tube, the inner tube having a hollow inner tube hole, which engages with and slides with a slip ring. The slip ring is fitted onto a slide rod, the slide rod is assembled with a lower plate, and a lower plate spring is installed between the lower plate and the clamping frame. It also includes an indicator groove, which communicates with the mounting groove, and one end of the lower plate is inserted into the indicator groove.

[0011] As a further improvement of this utility model, an elastic pull strap is installed between the lower plate and the indicator groove, and the elastic pull strap has elasticity.

[0012] As a further improvement of this utility model, the valve body is also provided with a drive hole, one end of the rotating shaft is inserted into the drive hole and a hexagonal prism and an indicator protrusion are provided on this end of the rotating shaft. The indicator protrusion corresponds to the indicator pattern or scale on the inner wall of the drive hole to indicate the rotation angle of the rotating shaft.

[0013] As a further improvement of this utility model, a guide seat is also installed on the clamping frame. The guide seat is engaged with the clamping groove and its inner side is connected to the mounting hole.

[0014] As a further improvement of this utility model, a backstop assembly is also installed in the mounting groove. The backstop assembly includes a backstop shell, a backstop rod, a backstop plate, and a backstop block. The backstop shell has a backstop groove inside, and a backstop partition plate is installed in the backstop groove. One end of the backstop rod is assembled with the backstop plate, and the other end passes through the backstop partition plate, is fitted with a backstop spring, and is assembled with a backstop rod seat. The backstop rod seat is engaged and slidably installed in the backstop groove. The two ends of the backstop spring are respectively pressed against the backstop partition plate and the backstop rod seat, thereby applying a thrust away from the backstop partition plate to the backstop rod seat. The backstop rod seat is assembled with the backstop block, and the backstop block is locked with the locking block to keep the locking block pressing against the step.

[0015] As a further improvement of this utility model, the end of the clamping block is provided with a clamping block surface, and the anti-reverse block is provided with an anti-reverse block surface. The anti-reverse block surface can fit with the clamping block surface, thereby squeezing the anti-reverse block until the clamping block passes through the anti-reverse block and then the anti-reverse block resets so that the clamping block cannot reverse.

[0016] As a further improvement of this utility model, the valve body is also provided with a movable groove and a push button groove. One end of the anti-reverse plate passes through the anti-reverse side groove and the push button groove and is assembled with the push button. The push button is installed in the movable groove.

[0017] The beneficial effects of this utility model are:

[0018] This invention achieves fast and slow speed control at port P through a parallel connection of an electromagnetic shut-off valve and a manual one-way throttle valve. When the electromagnetic shut-off valve is de-energized, the oil can quickly flow from P0 to P, achieving a fast speed at port P. When the electromagnetic shut-off valve is energized, the oil can flow from P0 to P through the manual one-way throttle valve, achieving a slow speed at port P. Simultaneously, a bidirectional hydraulic lock is provided on the electromagnetic shut-off valve, which can be opened by external oil pressure; it is closed when not in use, thus enabling bidirectional shut-off and on-demand opening. The entire valve has a wide speed range and fast speed adjustment. Furthermore, the stacked design greatly simplifies the structure and reduces the size, making maintenance, installation, and troubleshooting very convenient.

[0019] This invention, by adding a connecting component and a backstop component, enables the quick connection of two stacked valves via a connecting rod. Furthermore, it allows for additional stacking and expansion as needed. Compared to the traditional method of assembling all stacked valves with a single screw, this method offers greater flexibility. During maintenance, only the portion requiring maintenance needs to be disassembled, eliminating the need for complete disassembly and saving time and effort. Alternatively, it can be assembled using a single screw, similar to the traditional method, making it suitable for most operating environments and allowing for the flexible configuration of different hydraulic systems. Attached Figure Description

[0020] Figure 1 This is a hydraulic schematic diagram of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of this utility model (II).

[0023] Figure 4 This is schematic diagram three of the structure of this utility model;

[0024] Figure 5 This is a cross-sectional view of the present invention located at the center plane of the axis of connecting rod 410;

[0025] Figure 6 yes Figure 5 Enlarged view of point A in the middle;

[0026] Figure 7 This is a cross-sectional view of the other center plane where the axis of the connecting rod 410 is located;

[0027] Figure 8 This is a structural diagram of the connecting component 500 and the anti-reverse component 600. Figure 1 ;

[0028] Figure 9 This is a structural diagram of the connecting component 500 and the anti-reverse component 600. Figure 2 ;

[0029] Figure 10 This is a structural diagram of the connecting component 500 and the anti-reverse component 600. Figure 3 ;

[0030] Figure 11 This is a partial structural diagram of the connecting component 500 and the anti-reverse component 600. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0032] See Figure 1 The superimposed electronically controlled fast and slow speed regulating valve of this embodiment includes a solenoid shut-off valve 100, a one-way throttle valve, a P port, a P0 port, a B port, an A port, a T port, a first oil passage 311, a second oil passage 312, a third oil passage 313, a fourth oil passage 314, a first channel 321, a second channel 322, and a third channel 323. The one-way throttle valve includes a one-way valve 210 and a throttle valve 220. The throttle valve 220 is connected in series in the third channel 323. The oil inlet of the one-way valve 210 is connected to the first oil passage 311 through the first channel 321, and the oil outlet of the one-way valve 210 is connected to the first oil passage 311 through the second channel 322. The second oil passage 312 is connected to the B port, the third oil passage 313 is connected to the A port, and the fourth oil passage 314 is connected to the T port.

[0033] The inlet and outlet of the electromagnetic shut-off valve 100 are connected in series on the first oil passage 311, which is connected to the P port and the P0 port. The electromagnetic shut-off valve 100 includes a bidirectional hydraulic lock part 110 and a conducting part 120. The bidirectional hydraulic lock part 110 is formed by two check valves connected in opposite series, that is, the inlets of the two check valves are connected in opposite series.

[0034] When the electromagnetic shut-off valve 100 is de-energized, the conducting part 120 is connected in series with the first oil passage 311, allowing oil to flow quickly from P0 to P, achieving rapid flow through port P. When the electromagnetic shut-off valve 100 is energized, it switches the bidirectional hydraulic lock part 110 to be connected in series with the first oil passage 311. If sufficient control oil pressure is not input to the bidirectional hydraulic lock part 110, it remains in the shut-off state, the first oil passage 311 is not connected, and oil can flow slowly from P0 to P through a manual one-way throttle valve. In this case, if a rapid adjustment to a fast state is needed, control hydraulic oil can be input to the bidirectional hydraulic lock part 110 to open it, increasing the flow between ports P and P0. The design of the bidirectional hydraulic lock part 110 aims to maintain a bidirectional shut-off state when sufficient control oil pressure is not input, thereby improving the stability and safety of the system. On the other hand, the opening degree of the bidirectional hydraulic lock part 110 can be smaller than that of the conducting part 120. In this way, the speed of the bidirectional hydraulic lock part 110 after it is opened is different from the speed of the conducting part 120 when it is connected, thereby achieving a wider range of speed regulation.

[0035] See Figures 2-11 It also includes a valve body 300, on which the P port, P0 port, B port, A port, T port, first oil passage 311, second oil passage 312, third oil passage 313, fourth oil passage 314, first channel 321, second channel 322, and third channel 323 are all provided. The electromagnetic shut-off valve 100 and the one-way throttle valve are installed on the valve body 300.

[0036] The valve body 300 is provided with a mounting hole 301, a mounting groove 302, an indicator groove 303, a movable groove 304, a push button groove 305, and a drive hole 306. The mounting groove 302 is provided on both sides of the mounting hole 301, and a connecting component 500 and a backstop component 600 are installed in the mounting groove 302. The connecting component 500 includes a clamping frame 510, a clamping element 520, and a rotating shaft 530. The clamping frame 510 is installed in the mounting groove 302, and a clamping frame plate 511 is provided on the clamping frame 510, which closes the mounting groove 302. The clamping frame 510 and the rotating shaft 530 can be rotatably assembled relative to each other. The clamping element 520 is fitted outside the rotating shaft 530 and cannot be rotatably assembled relative to it. The clamping element 521 is provided with a clamping block 521 and a clamping groove 522. A clamping block surface 523 is provided on the end of the clamping block 521.

[0037] The clamping member 520 is assembled to one end of the elastic band 580, and the other end of the elastic band 580 is assembled to the clamping frame 510. The elastic band 580 is elastic and applies a spring force to the clamping member 520 to prevent it from rotating upward. Figure 6 (Subject to)

[0038] An elastic block 540 is installed on the clamping block 521. The elastic block 540 is elastic and can be made of rubber. The clamping groove 522 can be fitted over the connecting rod 410 but cannot pass through the large end 420. The large end 420 is located at both ends of the connecting rod 410. The diameter of the large end 420 is larger than that of the connecting rod 410 and forms a step. The end of the connecting rod with the large end 420 is inserted into the mounting hole. The elastic block 540 is pressed against the end of the step to tighten the connecting rod 410, realizing the assembly between the two stacked valves. The design of the elastic block 540 is mainly to increase a certain amount of elastic space to ensure the tension of the connecting rod, while effectively overcoming machining errors and ensuring the clamping assembly of the clamping block and the anti-reverse block.

[0039] The clamping bracket 510 is also equipped with an inner tube 560. The inner tube 560 has a hollow inner tube hole 561 inside. The inner tube hole 561 engages with and slides with a slip ring 571. The slip ring 571 is fitted onto a slide rod 570. The slide rod 571 is assembled with a lower plate 550. A lower plate spring 501 is installed between the lower plate 550 and the clamping bracket 510. The lower plate spring 510 is used to apply a spring force to the lower plate 550 to resist its movement toward the inner tube 560. The indicator groove 303 is connected to the mounting groove 302. One end of the lower plate 550 is inserted into the indicator groove 303. An elastic pull strap 502 is installed between the lower plate 550 and the indicator groove 303. The elastic pull strap 502 has elasticity, so that when the lower plate 550 moves, it deforms to keep the connection between the indicator groove 303 and the mounting groove 302 closed to prevent foreign objects from entering.

[0040] One end of the rotating shaft 530 is inserted into the drive hole 506, and a hexagonal prism 531 and an indicator protrusion 532 are provided on this end of the rotating shaft 530. The indicator protrusion 532 can correspond to the indicator pattern or scale on the inner wall of the drive hole 506 to indicate the rotation angle of the rotating shaft, thereby determining the rotation angle and state of the clamping member 520. The hexagonal prism 531 is used to drive the rotating shaft 530 to rotate by a socket wrench.

[0041] The anti-reverse assembly 600 includes an anti-reverse shell 610, an anti-reverse rod 620, an anti-reverse plate 630, an anti-reverse block 640, a push button 650, and a telescopic belt 660. The anti-reverse shell 610 has an anti-reverse groove 611 inside, and an anti-reverse partition 612 is installed in the anti-reverse groove 611. One end of the anti-reverse rod 620 is assembled with the anti-reverse plate 630, and the other end passes through the anti-reverse partition 612, is fitted with an anti-reverse spring 601, and is then assembled with an anti-reverse rod seat 621. The anti-reverse rod seat 621 is engaged and slidably installed in the anti-reverse groove 611. The two ends of the anti-reverse spring 601 are respectively pressed against the anti-reverse partition 612 and the anti-reverse rod seat 621, thereby applying a thrust away from the anti-reverse partition 612 to the anti-reverse rod seat 621. The anti-reverse lever seat 621 is assembled with the anti-reverse block 640. The anti-reverse block 640 is provided with an anti-reverse block surface 641, which can fit with the clamping block surface 523, thereby squeezing the anti-reverse block 640 until the clamping block 521 passes through the anti-reverse block 640 and then the anti-reverse block 640 resets so that the clamping block 521 cannot reverse, so as to keep the clamping block 521 (elastic block 540) locked with the step.

[0042] One end of the anti-reverse plate 630 passes through the anti-reverse side groove 612 and the push button groove 305 and is assembled with the push button 650, which is installed in the movable groove 304. In use, the push button 650 can be used to move the anti-reverse plate 630 away from the clamping block 521, thereby moving the anti-reverse block 640 until the anti-reverse block 640 is separated from the clamping block. Then the clamping part 520 can be reversed to achieve disassembly or unlocking.

[0043] The inner wall of the push button groove 305 and the anti-reverse plate 630 are respectively assembled with the two ends of the telescopic belt 660. When the anti-reverse plate 630 moves, it is elastically stretched and contracted by the telescopic belt 660 to keep the push button groove 305 closed.

[0044] Figures 2-11 The image shows the locked state. In this state, the elastic block 540 is pressed against the step to fix the large end 420 axially, while the anti-reverse block 640 and the locking block 521 are locked together to maintain this state. When unlocking is required, the push button 650 moves the anti-reverse block 640 to separate it from the locking block 521. The locking element 520 rotates downward under the action of the elastic band 580 until it presses against the lower plate 550, thereby causing the lower plate 550 to move downward. At this time, the positional relationship between the pattern or scale on the side wall of the indicator groove and the indicator plate 550 can be used to determine whether the locking element 520 is pressed against the lower plate 550.

[0045] The clamping bracket 510 is also equipped with a guide seat 590, which can be engaged with the clamping groove 522 and its inner side is connected to the mounting hole.

[0046] When locking is required, insert the large end 420 through the guide seat 590 into the mounting hole, then rotate the rotating shaft 530. The rotating shaft 530 drives the locking member 520 to rotate towards the guide seat 590 (large end) until locking is achieved. Figure 6 State. During this process, the clamping block surface 523 cooperates with the anti-reverse block surface 641 to squeeze the anti-reverse block 640 until the clamping block 521 passes through the anti-reverse block 640 and the elastic block is pressed against the step (the end face of the large end), while the anti-reverse block 640 is reset under the action of the anti-reverse spring to prevent the clamping block 521 from reversing.

[0047] It should be noted that, unless otherwise stated, the technical or scientific terms used in this application shall have the ordinary meaning as understood by one of ordinary skill in the art to which this application pertains.

[0048] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0049] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0050] In this application, a circumferentially rotatable assembly is a connection assembly that can rotate relative to each other, such as an assembly using bearings; a circumferentially rotatable but axially movable assembly is one that can rotate relative to each other but cannot move axially, such as by installing shaft clips on both sides of the shaft and the mounting device to prevent the shaft from moving axially; a circumferentially rotatable and axially movable assembly is a movable assembly, such as an assembly where the shaft passes through a shaft hole; an assembly that cannot rotate circumferentially but can move axially can be an assembly using spline grooves or spline mating.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A superimposed electronically controlled fast and slow speed regulating valve, characterized by: It includes an electromagnetic shut-off valve, a one-way throttle valve, a P port, a P0 port, a first oil passage, a first channel, a second channel, and a third channel. The one-way throttle valve includes a one-way valve and a throttle valve. The throttle valve is connected in series in the third channel. The oil inlet of the one-way valve is connected to the first oil passage through the first channel, and the oil outlet of the one-way valve is connected to the first oil passage through the second channel. The inlet and outlet of the electromagnetic shut-off valve are connected in series on the first oil passage, which is connected to the P port and the P0 port. The electromagnetic shut-off valve includes a bidirectional hydraulic lock part and a conducting part. The bidirectional hydraulic lock part is formed by two one-way valves connected in reverse series.

2. The superimposed electronically controlled fast and slow speed regulating valve according to claim 1, characterized in that: Also includes Port B, Port A, Port T, Second Oil Channel, Third Oil Channel, and Fourth Oil Channel. The Second Oil Channel is connected to Port B, the Third Oil Channel is connected to Port A, and the Fourth Oil Channel is connected to Port T.

3. The superimposed electronically controlled fast and slow speed regulating valve according to claim 1 or 2, characterized in that: It also includes a valve body, which has mounting holes and mounting grooves. The mounting grooves are located on both sides of the mounting holes, and a connecting component is installed in the mounting groove. The connecting component includes a clamping frame, a clamp, and a rotating shaft. The clamping frame is installed in the mounting groove and has a clamping frame plate that closes the mounting groove. The clamping frame is assembled with the rotating shaft. The clamping component is fitted around the rotating shaft and is not circumferentially rotatable relative to it. The clamping component has a clamping block and a clamping groove. The clamping component is assembled with one end of an elastic band, and the other end of the elastic band is assembled with the clamping frame. The clamping block presses against the step to fix the connecting rod in the axial direction. The connecting rod has large ends at both ends, the diameter of which is larger than that of the connecting rod, and the end face of the large end connected to the connecting rod forms a step.

4. The superimposed electronically controlled fast and slow speed regulating valve according to claim 3, characterized in that: The clamping frame is also equipped with an inner tube, the inner tube having a hollow inner tube hole, which engages with and slides with a slip ring. The slip ring is fitted onto a slide rod, which is assembled with a lower plate. A lower plate spring is installed between the lower plate and the clamping frame. It also includes an indicator groove, which communicates with a mounting groove, and one end of the lower plate is inserted into the indicator groove.

5. The superimposed electronically controlled fast and slow speed regulating valve according to claim 4, characterized in that: An elastic strap is installed between the lower plate and the indicator groove, and the elastic strap has elasticity.

6. The superimposed electronically controlled fast and slow speed regulating valve according to claim 3, characterized in that: The valve body is also provided with a drive hole. One end of the rotating shaft is inserted into the drive hole and a hexagonal prism and an indicator protrusion are provided on this end of the rotating shaft. The indicator protrusion corresponds to the indicator pattern or scale on the inner wall of the drive hole to indicate the rotation angle of the rotating shaft.

7. The superimposed electronically controlled fast and slow speed regulating valve according to claim 3, characterized in that: The clamping bracket is also equipped with a guide seat, which engages with the clamping groove and its inner side communicates with the mounting hole.

8. The superimposed electronically controlled fast and slow speed regulating valve according to any one of claims 4-7, characterized in that: An anti-reverse assembly is also installed in the mounting slot. The anti-reverse assembly includes an anti-reverse shell, an anti-reverse rod, an anti-reverse plate, and an anti-reverse block. The anti-reverse shell has an anti-reverse sliding groove inside, and an anti-reverse partition plate is installed in the anti-reverse sliding groove. One end of the anti-reverse rod is assembled with the anti-reverse plate, and the other end passes through the anti-reverse partition plate, is fitted with an anti-reverse spring, and is then assembled with an anti-reverse rod seat. The anti-reverse rod seat is engaged and slidably installed in the anti-reverse sliding groove. The two ends of the anti-reverse spring are respectively pressed against the anti-reverse partition plate and the anti-reverse rod seat, thereby applying a thrust away from the anti-reverse partition plate to the anti-reverse rod seat. The anti-reverse rod seat is assembled with the anti-reverse block, and the anti-reverse block is locked with the locking block to keep the locking block pressing against the step.

9. The superimposed electronically controlled fast and slow speed regulating valve according to claim 8, characterized in that: The clamping block has a clamping block surface at its end, and the anti-reverse block has an anti-reverse block surface. The anti-reverse block surface can fit against the clamping block surface, thereby squeezing the anti-reverse block until the clamping block passes through the anti-reverse block and then the anti-reverse block resets so that the clamping block cannot reverse.

10. The superimposed electronically controlled fast and slow speed regulating valve according to claim 8, characterized in that: The valve body is also provided with a movable groove and a push button groove. One end of the anti-reverse plate passes through the anti-reverse side groove and the push button groove and is assembled with the push button. The push button is installed in the movable groove.

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