Manual-automatic integrated electro-hydraulic reversing valve for high-pressure pipeline

Abstract

The manual-automatic integrated electro-hydraulic directional control valve comprises a valve body piece, electromagnetic valve bodies fixed to the two sides of the valve body piece and electromagnets moving in the valve body piece, and is characterized in that electromagnetic coils are fixed in the electromagnetic valve bodies, the electromagnets are arranged at the positions, close to the inner rings of the electromagnetic coils, in the electromagnetic valve bodies, and the electromagnets are fixed to a pushing rod; the pushing rod is aligned with the axis of the valve rod piece; a wire inlet section of the electromagnetic valve body is communicated with the electromagnetic coil through a safety mechanism, the safety mechanism comprises an insulating plug board and two groups of conducting strips, and the insulating plug board transversely moves between the two groups of conducting strips to control the on-off of the electromagnetic valve body and the electromagnetic coil; and a transmission mechanism and a self-locking manual assembly are arranged on the front face of the valve body part, the self-locking manual assembly drives the pushing rod and the electromagnet to move in the electromagnetic valve body, and labor output can be effectively saved while use of the electro-hydraulic reversing valve can be effectively protected.

Description

Technical Field

[0001] The invention relates to the technical field of manual-automatic valves, and in particular to a manual-automatic electro-hydraulic reversing valve for a high-pressure pipeline. Background Art

[0002] The electro-hydraulic reversing valve is a key control component that combines electronic control technology with hydraulic technology. It is widely used in various hydraulic systems to control the flow direction of hydraulic oil, thereby realizing the action control of hydraulic actuators. The opening and closing state of the hydraulic valve is controlled by electrical signals. The electro-hydraulic reversing valve can accurately control the hydraulic system.

[0003] At present, the electro-hydraulic reversing valves on the market are usually manual and automatic. In the normal use of the electromagnetic reversing valve, the flow of different flow channels is generally achieved by changing the position of the valve stem inside the valve body. However, there are still two problems in actual use:

[0004] 1. When the valve stem position is changed manually, if the solenoid valve is in the on state, the electromagnet will be pushed, which will seriously affect the use of the solenoid valve, and even burn the solenoid valve coil in serious cases. Therefore, the solenoid valve needs to be closed in advance when switching to manual control. However, this operation depends on the operating experience of the personnel. Therefore, in actual use, there are often operating accidents in which the solenoid valve is not cut off and the displacement of the electromagnet is directly controlled;

[0005] Second, since the internal valve stem of the electro-hydraulic reversing valve currently on the market has the basic effect of elastic reset to the center through the spring, manual control of the displacement of the valve stem requires long-term resistance to the valve stem to prevent it from resetting, which greatly increases the difficulty of operation for actual operators and seriously affects labor output.

[0006] Therefore, how to provide a manual-automatic electro-hydraulic reversing valve for a high-pressure pipeline is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0007] One purpose of the present invention is to provide a manual-automatic electro-hydraulic reversing valve for a high-pressure pipeline, which can effectively protect the use of the electro-hydraulic reversing valve and effectively save labor output.

[0008] A manual and automatic electro-hydraulic reversing valve for a high-pressure pipeline according to an embodiment of the present invention comprises a valve body, an electromagnetic valve body fixed on both sides of the valve body, and an electromagnet movable inside the valve body, characterized in that an electromagnetic coil is fixed in the electromagnetic valve body, an electromagnet is arranged near the inner ring of the electromagnetic coil in the electromagnetic valve body, the electromagnet is fixed on a pushing rod, and the pushing rod is aligned with the axis of the valve stem;

[0009] The inlet line section of the solenoid valve body is connected to the solenoid coil through a safety mechanism, and the safety mechanism includes an insulating plug plate and two sets of conductive sheets. The insulating plug plate moves laterally between the two sets of conductive sheets to control the on-off of the solenoid valve body and the solenoid coil.

[0010] A transmission mechanism and a self-locking manual component are arranged on the front of the valve body. The self-locking manual component drives the pushing rod and the electromagnet to move inside the solenoid valve body. At the same time, the self-locking manual component drives the insulating plug plate to move between the two sets of conductive sheets through the transmission mechanism before the activity of the electromagnet.

[0011] Furthermore, the two groups of conductive sheets are arranged opposite to each other, conductive pins are fixed on opposite sides of the conductive sheets, the conductive pins slide in the conductive cylinder and contact the surface of the conductive cylinder, and the single group of conductive cylinders is connected to the electromagnetic coil through a wire.

[0012] Furthermore, two groups of elastic rods are fixedly connected to opposite sides of the two groups of conductive sheets, and the conductive sheets are elastically arranged in the solenoid valve body through the two groups of elastic rods. One end of the adjacent side of the two groups of conductive sheets is opened as a cone, and the end of the insulating plug plate matches the size of the position.

[0013] Furthermore, the self-locking manual assembly includes a push handle, two sets of control rods and a driving frame. The two sets of control rods slide longitudinally on the left and right sides of the push handle. One end of the control rod is elastically connected to the push handle through a resistance spring rod, and the other end of the control rod away from the resistance spring rod is in the shape of a tooth cone.

[0014] Furthermore, a plurality of groups of bite grooves are transversely opened at a height position close to the control plug rod on the side surface of the valve body, and the control plug rod and the bite grooves are clamped together by the elastic interference effect of the interference spring rod.

[0015] Furthermore, a driving frame is slidably arranged on the same side of the valve body and the two groups of solenoid valve bodies, and the driving frame is provided with through slots near the two groups of control rods. The control rods pass through the through slots and are engaged with the bite grooves. Resistance rods are respectively fixed at both ends of the driving frame, and the axes of the resistance rods and the ends of the pushing rods coincide.

[0016] Furthermore, a centering pin is fixed on one side of the driving frame at the middle position of the two groups of through-slotted grooves, and the driving frame is movably connected to the hinge hole at the bottom of the transmission connecting plate through the centering pin. A second force-bearing pin is fixed on the surface of one side of the driving frame close to the push handle, and the transmission connecting plate slides in the second pin groove on one side of the transmission frame through the second force-bearing pin, and the transmission frame is fixedly connected to the push handle.

[0017] Furthermore, the two sides of the driving frame are elastically connected to the two groups of electromagnetic valve bodies through spring parts, the elastic potential energy between the driving frame and the electromagnetic valve body is greater than the elastic potential energy of the elastic rod, and the transmission frame is slidably arranged on the side surface of the valve body through a slide rail.

[0018] Furthermore, the transmission mechanism includes a push rod and a transmission connecting plate. A first pin groove is opened above the transmission connecting plate. The first pin groove is movably connected to a first force-bearing pin at one end of a connecting slide. The connecting slide slides on the top surface of the valve body. One side of the connecting slide is fixedly connected to the push rod. Both ends of the push rod are respectively aligned with two sets of insulating plug plates.

[0019] Furthermore, the top of the valve body supports and limits the positions of both ends of the actuating rod through a sliding seat, and the lateral movable position distance of the first force-bearing pin in the first pin groove is the same as the lateral movable position distance of the insulating plug plate between the two sets of conductive sheets.

[0020] The beneficial effects of the present invention are:

[0021] The present invention provides a safety mechanism between the electromagnetic valve body and the connecting wire of the electromagnetic coil. When the insulating plug plate is inserted between the two sets of conductive sheets, the two sets of conductive sheets will be pushed to move and separate them. At this time, the electromagnetic valve body will not be able to communicate with the electromagnetic coil, thereby achieving a mechanical on-off effect. The operation is connected to the self-locking manual component through a transmission mechanism, so that the self-locking manual component can achieve the cutting operation of the electromagnetic coil before driving the valve stem component inside the valve body to move. Compared with the traditional on-off method, it can better adapt to the operation of novices and prevent the electromagnetic coil from being burned due to the conduction of the electromagnetic coil during manual operation.

[0022] The present invention provides a control rod and an engaging groove, and the control rods on both sides of the push handle can be pulled to achieve the disengagement effect of the control rod and the engaging groove on the surface of the valve body. At this time, pushing the push handle can drive the transmission connecting plate to swing through the transmission frame, and then drive the driving frame to move after swinging to a certain angle. At the same time, the position of the pushing rod and the electromagnet inside the electromagnetic valve body is controlled by the resistance rod, so as to change the position of the valve stem part in the valve body. At the same time, after loosening the control rod, the control rod is re-engaged with the engaging groove at a different position. At this time, the position of the transmission frame is locked, and the position locking of the driving frame can be achieved. In this way, there is no need to resist the driving frame for a long time, which can effectively save labor output compared with traditional operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the overall structure of a manual-automatic electro-hydraulic reversing valve for a high-pressure pipeline proposed by the present invention;

[0025] Figure 2 This is a half-section schematic diagram of the internal structure of a manual-automatic electro-hydraulic reversing valve for a high-pressure pipeline proposed by the present invention.

[0026] Figure 3This is a schematic diagram of the disassembly structure of a manual-automatic electro-hydraulic reversing valve safety mechanism for a high-pressure pipeline proposed by the present invention.

[0027] Figure 4 This is a top view of the half-section structure of a valve body of a manual-automatic electro-hydraulic reversing valve for a high-pressure pipeline proposed by the present invention.

[0028] Figure 5 This is a schematic diagram of the partial position structure of a driving frame for a manual-automatic electro-hydraulic reversing valve for a high-pressure pipeline proposed by the present invention.

[0029] Figure 6 This is a schematic diagram of the partial disassembly structure of a manual automatic electro-hydraulic directional valve transmission mechanism for a high-pressure pipeline proposed by the present invention.

[0030] Figure 7 A manual and automatic electro-hydraulic reversing valve for high-pressure pipeline proposed by the present invention Figure 2 A magnified schematic diagram of the structure at point A.

[0031] Figure 8 A manual and automatic electro-hydraulic reversing valve for high-pressure pipeline proposed by the present invention Figure 4 Enlarged schematic diagram of the structure at point B.

[0032] Fig. 9 A manual and automatic electro-hydraulic reversing valve for high-pressure pipeline proposed by the present invention Figure 5 Enlarged schematic diagram of the structure at point C.

[0033] In the figure: 1. valve body; 2. valve stem; 3. solenoid valve body; 4. solenoid coil; 5. electromagnet; 6. safety mechanism; 7. transmission mechanism; 8. pushing rod; 9. self-locking manual assembly;

[0034] 61. Insulating plug plate; 62. Conductive sheet; 63. Conductive pin; 64. Conductive cylinder; 65. Elastic rod; 71. Abutment rod; 72. Connecting slide; 73. First force pin; 74. Transmission connecting plate; 75. First pin slot; 76. Second force pin; 77. Transmission frame; 78. Second pin slot; 91. Push handle; 92. Control plug rod; 93. Abutment spring rod; 94. Driving frame; 95. Through-slot; 96. Engagement slot; 97. Abutment rod; 98. Centering pin. DETAILED DESCRIPTION

[0035] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0036] refer to Figure 1-Figure 9, comprising a valve body 1, an electromagnetic valve body 3 fixed on both sides of the valve body 1 and an electromagnet 5 movable inside the valve body 1, characterized in that an electromagnetic coil 4 is fixed inside the electromagnetic valve body 3, an electromagnet 5 is arranged near the inner ring position of the electromagnetic coil 4 in the electromagnetic valve body 3, the electromagnet 5 is fixed on a pushing rod 8, and the pushing rod 8 is aligned with the axis of the valve stem 2; the electromagnetic valve body 3 is connected to the electromagnetic coil 4 through a safety mechanism 6, the safety mechanism 6 comprises an insulating plug 61 and two groups of conductive sheets 62, the insulating plug 61 moves laterally between the two groups of conductive sheets 62 to control the on-off of the electromagnetic valve body 3 and the electromagnetic coil 4; a transmission mechanism 7 and a self-locking manual component 9 are arranged on the front of the valve body 1, the self-locking manual component 9 drives the pushing rod 8 and the electromagnet 5 to move inside the electromagnetic valve body 3, and at the same time, the self-locking manual component 9 drives the insulating plug 61 to move between the two groups of conductive sheets 62 through the activity effect of the transmission mechanism 7 before the electromagnet 5.

[0037] In this embodiment, first, the valve body 1, two sets of electromagnetic valve bodies 3 and the valve stem 2 constitute a basic electro-hydraulic reversing valve assembly. The valve stem 2 is movable inside the valve body 1 through components such as a spring seal ring to achieve the switching of different flow channels, and an electromagnetic coil 4 is arranged inside the electromagnetic valve body 3. When the electromagnetic coil 4 is turned on, the electromagnet 5 can drive the pushing rod 8 to resist one end of the valve stem 2, thereby achieving the most basic electro-hydraulic reversing effect.

[0038] By setting a safety mechanism 6 inside the electromagnetic valve body 3, the two ends of the safety mechanism 6 are connected to the electromagnetic valve body 3 input line segment and the electromagnetic coil 4, and the opening and closing of the electromagnetic coil 4 are controlled by the safety mechanism 6 at the same time. The safety mechanism 6 includes an insulating plug 61 and two sets of conductive sheets 62. When the insulating plug 61 is pushed into between the two sets of conductive sheets 62, the two sets of conductive sheets 62 are separated, and the electromagnetic coil 4 can be cut off, thereby preventing the electromagnetic coil 4 from being turned on during manual operation and causing the electromagnetic coil 4 to burn out.

[0039] The movement of the insulating plug plate 61 is controlled by the transmission mechanism 7 and the self-locking manual component 9. The self-locking manual component 9 can normally drive the pushing rod 8 and the valve stem member 2 to move left and right. The transmission effect before the movement will first drive the safety mechanism 6 through the transmission mechanism 7 to cut off the electromagnetic coil 4. Such operation is suitable for novice personnel to prevent the electromagnetic coil 4 from being burned due to improper operation. At the same time, the self-locking manual component 9 has the self-locking ability between the valve body member 1, and can effectively lock the valve stem member 2 with the valve body member 1 after adjusting the position, thereby reducing the output of labor during the actual operation.

[0040] refer to Figure 3 and Figure 7, the two groups of conductive sheets 62 are arranged opposite to each other, and a conductive pin 63 is fixed on the opposite side of the conductive sheet 62, and the conductive pin 63 slides in the conductive cylinder 64 and contacts the surface of the conductive cylinder 64, and the single group of conductive cylinder 64 is connected to the electromagnetic coil 4 through a wire. Two groups of elastic rods 65 are fixedly connected to the opposite sides of the two groups of conductive sheets 62, and the conductive sheet 62 is elastically arranged in the electromagnetic valve body 3 through the two groups of elastic rods 65. One end of the adjacent side of the two groups of conductive sheets 62 is opened as a cone, and the end of the insulating plug 61 matches the size of the position.

[0041] In the present embodiment, an activity chamber is provided inside the solenoid valve body 3 near the conductive sheet 62, and two groups of conductive sheets 62 are arranged inside the activity chamber for movement up and down, and the conductive sheets 62 are elastically connected to the solenoid valve body 3 through an elastic rod 65. Under normal circumstances, the two groups of conductive sheets 62 are pressed against each other by the elastic rod 65, and the solenoid valve body 3 normally conducts the circuit through the conductive tube 64 and the conductive pin 63. After the insulating plug 61 is pushed into between the two groups of conductive sheets 62, the two groups of conductive sheets 62 are separated from each other. At this time, the conductive sheet 62 slides in the conductive tube 64 through the conductive pin 63, and the circuit of the electromagnetic coil 4 is mechanically cut off, thereby protecting the electromagnetic coil 4 from being affected by the electromagnet 5 and burning.

[0042] refer to Figure 6 and Figure 8 The self-locking manual assembly 9 includes a push handle 91, two groups of control rods 92 and a driving frame 94. The two groups of control rods 92 slide longitudinally on the left and right sides of the push handle 91. One end of the control rod 92 is elastically connected to the push handle 91 through a spring rod 93, and the other end of the control rod 92 away from the spring rod 93 is in a cone shape. A plurality of groups of bite grooves 96 are horizontally opened at a height position close to the control rod 92 on the side surface of the valve body 1, and the control rod 92 and the bite groove 96 are clamped together through the elastic interference effect of the spring rod 93.

[0043] In this embodiment, two sets of control rods 92 slide on both sides of the push handle 91 and achieve elastic resistance by resisting the spring rod 93, so that one end of the control rod 92 can be mutually engaged with the bite groove 96 on one side of the valve body 1, thereby limiting the lateral position of the push handle 91 and subsequent components. By pulling the control rod 92 to squeeze the resisting spring rod 93, the push handle 91 can be unlocked, thereby achieving the control effect.

[0044] refer to Figure 4 , Figure 5 , Figure 6 and Fig. 9A driving frame 94 is also slidably provided on the same side of the valve body 1 and the two groups of electromagnetic valve bodies 3. The driving frame 94 is provided with through slots 95 near the two groups of control plug rods 92. The control plug rods 92 pass through the through slots 95 and engage with the bite slots 96. The two ends of the driving frame 94 are respectively fixed with abutment rods 97, and the axis of the abutment rod 97 coincides with the end of the pushing rod 8. A centering pin 98 is also fixed on one side of the driving frame 94 at the middle position of the two groups of through slots 95. The driving frame 94 is movably connected to the hinge hole at the bottom of the transmission connecting plate 74 through the centering pin 98. A second force-bearing pin 76 is fixed on the surface of one side of the driving frame 94 near the push handle 91. The transmission connecting plate 74 slides in the second pin slot 78 on one side of the transmission frame 77 through the second force-bearing pin 76. The transmission frame 77 is fixedly connected to the push handle 91.

[0045] In the present embodiment, the driving frame 94 is slidably arranged on the single side position of the valve body part 1 and the two groups of electromagnetic valve bodies 3. Two groups of through slots 95 are provided on its surface to control the normal insertion of the insertion rod 92 so that it can normally engage with the bite groove 96. The abutment rods 97 fixed at both ends of the driving frame 94 are aligned with the ends of the pushing rod 8. After the driving frame 94 is subjected to the pushing force, the pushing rod 8 can be pushed to push the valve stem part 2 inside the valve body part 1 to displace. The driving frame 94 moves at the bottom position of the transmission connecting plate 74 through the centering pin 98. When the driving frame 94 deflects, the first swinging center is the active position of the driving frame 94 and the transmission connecting plate 74. Then, after deflecting a certain distance, the deflection effect will be limited, so it will turn to drive the driving frame 94 to move horizontally. Specifically, after pulling the push handle 91, the push handle 91 moves by driving the transmission frame 77. The transmission frame 77 is slidably connected to the second force-bearing pin 76 on the surface of the transmission connecting plate 74 through the second pin groove 78, causing the transmission connecting plate 74 to swing until the second force-bearing pin 76 moves to the maximum position in the second pin groove 78. At the same time, the swing of the transmission connecting plate 74 will drive the connecting slide 72 to move the maximum position distance at the top of the valve body 1 through the active effect of the first pin groove 75 and the first force-bearing pin 73 until the connecting slide 72 can no longer move. At this time, the transmission connecting plate 74 will be restricted and unable to swing, so that the lateral movement effect of the push handle 91 will drive the driving frame 94 to move lateral. In this way, the insulating plug plate 61 can be driven to be inserted between the two sets of conductive plates 62 by utilizing the swing effect of the front section to first realize the cutting of the electromagnetic coil 4, and then the electromagnet 5 can be driven to move inside the electromagnetic valve body 3 through the movement of the driving frame 94 to prevent the electromagnetic coil 4 from being burned.

[0046] refer to Figure 1 and Fig. 9 The two sides of the driving frame 94 are elastically connected to the two groups of electromagnetic valve bodies 3 through spring members, the elastic potential energy between the driving frame 94 and the electromagnetic valve body 3 is greater than the elastic potential energy of the elastic rod 65, and the transmission frame 77 is slidably arranged on the side surface of the valve body member 1 through a slide rail.

[0047] In this embodiment, the driving frame 94 is elastically connected to the electromagnetic valve body 3 through the spring member, so that after the push handle 91 is released, the driving frame 94 can realize the self-reset operation, and synchronously drive the pushing rod 8 and the valve stem member 2 to reset, and the transmission frame 77 is restricted in its movement through the sliding effect of the slide rail.

[0048] The elastic resistance force between the driving frame 94 and the electromagnetic valve body 3 is greater than the elastic resistance force between the elastic rod 65 and the conductive sheet 62. In this way, when the insulating plug plate 61 is pushed, the elastic rod 65 will be compressed first, and then the driving frame 94 will move. Otherwise, the driving frame 94 will reset first, and the elastic rod 65 will reset and drive the conductive sheet 62 to fit.

[0049] refer to Figure 6 and Fig. 9 The transmission mechanism 7 includes a push rod 71 and a transmission connecting plate 74. A first pin slot 75 is provided above the transmission connecting plate 74. The first pin slot 75 is movably connected to a first force-bearing pin 73 at one end of a connecting slide 72. The connecting slide 72 slides on the top surface of the valve body 1. One side of the connecting slide 72 is fixedly connected to the push rod 71. The two ends of the push rod 71 are respectively aligned with the two groups of insulating plug plates 61. The top of the valve body 1 supports and limits the positions of the two ends of the push rod 71 through a slide seat. The horizontal moving position distance of the first force-bearing pin 73 in the first pin slot 75 is the same as the horizontal moving position distance of the insulating plug plate 61 between the two groups of conductive sheets 62.

[0050] In this embodiment, the connecting slide 72 moves in the first pin groove 75 through the first force-bearing pin 73. At this time, the inner wall of the first pin groove 75 of the transmission connecting plate 74 will push the first force-bearing pin 73 during the deflection process, so that the first force-bearing pin 73 drives the connecting slide 72 to move on the top of the valve body 1. At the same time, the lateral moving position distance of the first force-bearing pin 73 inside the first pin groove 75 is the same as the distance between the insulating plug plate 61 and the conductive sheet 62. This means that after the transmission connecting plate 74 deflects to the maximum position, the distance that the connecting slide 72 drives the actuating rod 71 to move is just enough to ensure that the insulating plug plate 61 is between the two sets of conductive sheets 62, thereby providing a better partition effect.

[0051] Working principle: First, the electromagnetic valve body 3 is directly connected to the conductive sheet 62 through the conductive tube 64 and the conductive pin 63. When the two sets of conductive sheets 62 are turned on, the electromagnetic coil 4 is closed to drive the electromagnet 5 and the pushing rod 8 to move inside the electromagnetic valve body 3. One end of the pushing rod 8 will push the valve stem 2 to move inside the valve body 1, thereby changing the actual liquid flow direction. When manual control is required, first hold the push handle 91 and pull the control plug rods 92 on both sides. The control plug rod 92 squeezes and resists the spring rod 93, and the other end will be separated from the bite groove 96 on the surface of the valve body 1. At this time, push the push handle horizontally. 91, the push handle 91 drives the second force-bearing pin 76 to swing through the second pin groove 78 on the surface of the transmission frame 77, and the second force-bearing pin 76 is fixed on the surface of the transmission connecting plate 74, so that the transmission connecting plate 74 swings synchronously. At this time, the swing center of the transmission connecting plate 74 is the active center position of the bottom and the driving frame 94, and the first pin groove 75 on the top thereof pushes the first force-bearing pin 73. The first force-bearing pin 73 drives the actuating rod 71 to move horizontally on the top of the valve body 1 through the connecting slide 72 until one end of the actuating rod 71 pushes the insulating plug plate 61 to be inserted between the two sets of conductive sheets 62. At this time, the two sets The conductive sheet 62 will slide between the conductive pin 63 and the conductive cylinder 64, and at the same time, the conductive sheet 62 will realize elastic resistance displacement through the elastic rod 65 until the insulating plug plate 61 completely enters between the two sets of conductive sheets 62 to isolate them, and then continues to push the push handle 91. At this time, due to the influence that the connecting slide 72 cannot continue to push, the pushing effect of the push handle 91 will cause the swing center of the transmission connecting plate 74 to be converted to the active position of the first force-bearing pin 73 and the first pin groove 75. At this time, the transmission connecting plate 74 as a whole can be understood as the bottom position height remains unchanged, the lateral position changes, and the entire The body moves upward until the transmission connecting plate 74 is in a vertical state. During this process, the transmission connecting plate 74 will drive the driving frame 94 to change its lateral position, and the two ends of the driving frame 94 are connected to the resistance rods 97. The resistance rod 97 can push the pushing rod 8 inside the solenoid valve body 3, and the pushing rod 8 pushes the valve stem 2 to achieve a manual control effect. Finally, the control plug rod 92 is released. Under the elastic action of the resistance spring rod 93, the control plug rod 92 passes through the through slot 95 and re-engages with the bite slot 96 at a different position, thereby limiting the lateral position of the driving frame 94 through the above-mentioned components.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A manual and automatic electro-hydraulic reversing valve for a high-pressure pipeline, comprising a valve body (1), an electromagnetic valve body (3) fixed on both sides of the valve body (1), and an electromagnet (5) movable inside the valve body (1), characterized in that: An electromagnetic coil (4) is fixed inside the electromagnetic valve body (3), an electromagnet (5) is arranged near the inner ring of the electromagnetic coil (4) inside the electromagnetic valve body (3), and the electromagnet (5) is fixed on a pushing rod (8), and the pushing rod (8) is aligned with the axis of the valve stem (2); The inlet line section of the electromagnetic valve body (3) is connected to the electromagnetic coil (4) through a safety mechanism (6), the safety mechanism (6) comprises an insulating plug plate (61) and two groups of conductive sheets (62), the insulating plug plate (61) moves laterally between the two groups of conductive sheets (62) to control the on-off of the electromagnetic valve body (3) and the electromagnetic coil (4); A transmission mechanism (7) and a self-locking manual assembly (9) are arranged on the front of the valve body (1). The self-locking manual assembly (9) drives the pushing rod (8) and the electromagnet (5) to move inside the electromagnetic valve body (3). At the same time, the self-locking manual assembly (9) drives the insulating plug plate (61) to move between the two sets of conductive sheets (62) through the activity effect of the transmission mechanism (7) before the electromagnet (5).

2. A manual-automatic electro-hydraulic reversing valve for high-pressure pipeline according to claim 1, characterized in that: The two groups of conductive sheets (62) are arranged opposite to each other, and a conductive pin (63) is fixed on the opposite side of the conductive sheets (62). The conductive pin (63) slides in the conductive cylinder (64) and contacts the surface of the conductive cylinder (64). The single group of conductive cylinders (64) is connected to the electromagnetic coil (4) through a wire.

3. A manual-automatic electro-hydraulic reversing valve for high-pressure pipeline according to claim 2, characterized in that: Two groups of elastic rods (65) are fixedly connected to opposite sides of the two groups of conductive sheets (62), and the conductive sheets (62) are elastically arranged in the electromagnetic valve body (3) through the two groups of elastic rods (65). One end of the adjacent side of the two groups of conductive sheets (62) is opened as a cone, and the end of the insulating plug plate (61) matches the size of the position.

4. A manual-automatic electro-hydraulic reversing valve for high-pressure pipeline according to claim 1, characterized in that: The self-locking manual assembly (9) comprises a push handle (91), two groups of control rods (92) and a driving frame (94), the two groups of control rods (92) longitudinally slide on the left and right sides of the push handle (91), one end of the control rod (92) is elastically connected to the push handle (91) through a resisting spring rod (93), and the other end of the control rod (92) away from the resisting spring rod (93) is in a tooth cone shape.

5. A manual-automatic electro-hydraulic reversing valve for high-pressure pipeline according to claim 4, characterized in that: The valve body (1) has a plurality of groups of bite grooves (96) transversely formed on its side surface at a height position close to the control plug rod (92), and the control plug rod (92) and the bite grooves (96) are connected by the elastic contact effect of the contact spring rod (93).

6. A manual-automatic electro-hydraulic reversing valve for high-pressure pipeline according to claim 4, characterized in that: A driving frame (94) is also slidably provided at the same side of the valve body (1) and the two groups of electromagnetic valve bodies (3). The driving frame (94) is provided with through slots (95) at positions close to the two groups of control plug rods (92). The control plug rods (92) pass through the through slots (95) and are engaged with the bite grooves (96). The two ends of the driving frame (94) are respectively fixed with a resistance rod (97). The resistance rod (97) and the end of the pushing rod (8) have the same axis.

7. A manual-automatic electro-hydraulic reversing valve for high-pressure pipeline according to claim 6, characterized in that: A centering pin (98) is fixed on one side of the driving frame (94) at a middle position of the two groups of through-slots (95); the driving frame (94) is movably connected to a hinge hole at the bottom of the transmission connecting plate (74) through the centering pin (98); a second force-bearing pin (76) is fixed on a surface of one side of the driving frame (94) close to the push handle (91); the transmission connecting plate (74) slides in a second pin groove (78) on one side of the transmission frame (77) through the second force-bearing pin (76); and the transmission frame (77) is fixedly connected to the push handle (91).

8. The manual-automatic electro-hydraulic reversing valve for high-pressure pipeline according to claim 4, characterized in that: The two sides of the driving frame (94) are elastically connected to the two groups of electromagnetic valve bodies (3) through spring members, the elastic potential energy between the driving frame (94) and the electromagnetic valve body (3) is greater than the elastic potential energy of the elastic rod (65), and the transmission frame (77) is slidably arranged on the side surface of the valve body member (1) through a slide rail.

9. The manual-automatic electro-hydraulic reversing valve for high-pressure pipeline according to claim 1, characterized in that: The transmission mechanism (7) comprises a push rod (71) and a transmission connecting plate (74). A first pin groove (75) is provided above the transmission connecting plate (74). The first pin groove (75) is movably connected to a first force-bearing pin (73) at one end of a connecting slide (72). The connecting slide (72) slides on the top surface of the valve body (1). One side of the connecting slide (72) is fixedly connected to the push rod (71). Two ends of the push rod (71) are respectively aligned with two sets of insulating plug plates (61).

10. A manual-automatic electro-hydraulic reversing valve for high-pressure pipeline according to claim 9, characterized in that: The top of the valve body (1) supports and limits the positions of the two ends of the abutting rod (71) through a sliding seat, and the lateral movable position distance of the first force-bearing pin (73) inside the first pin groove (75) is the same as the lateral movable position distance of the insulating plug plate (61) between the two sets of conductive sheets (62).

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