A manual and automatic integrated electro-hydraulic reversing valve for high-pressure pipelines

Abstract

The present invention discloses a manual and electric-hydraulic integrated electro-hydraulic directional control valve for high-pressure pipelines, which comprises a valve body member, an electromagnetic valve body fixed on both sides of the valve body member, and an electromagnet movable inside the valve body member. It is characterized in that an electromagnetic coil is fixed inside the electromagnetic valve body, an electromagnet is arranged at the inner ring position close to the electromagnetic coil inside the electromagnetic valve body, the electromagnet is fixed on a push rod, and the push rod is aligned with the axis of the valve rod member; the inlet section of the electromagnetic valve body is communicated with the electromagnetic coil through a safety mechanism, and the safety mechanism comprises an insulating plug board and two groups of conductive sheets, and the insulating plug board moves horizontally between the two groups of conductive sheets to control the on-off of the electromagnetic valve body and the electromagnetic coil; a transmission mechanism and a self-locking manual assembly are arranged on the front surface of the valve body member, and the self-locking manual assembly drives the push rod and the electromagnet to move inside the electromagnetic valve body. The present invention can effectively protect the use of the electro-hydraulic directional control valve and can effectively save labor output.

Description

Technical Field

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

[0002] An electro-hydraulic reversing valve is a key control element that combines electronic control technology and hydraulic technology. It is widely used in various hydraulic systems to control the flow direction of hydraulic oil, thereby realizing the motion control of hydraulic actuators. By using an electric signal to control the opening and closing state of the hydraulic valve, the electro-hydraulic reversing valve can accurately control the hydraulic system.

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

[0004] First, when manually changing the position of the valve stem, if the solenoid valve is in the conducting state, the solenoid will be pushed, which will seriously affect the use of the solenoid valve. In severe cases, it may even burn out the solenoid valve coil. Therefore, when switching to manual control, it is necessary to close the solenoid valve in advance. However, this operation depends on the operator's experience, so in actual use, there are often operation accidents where the solenoid valve is not cut off and the displacement of the solenoid is directly controlled.

[0005] Second, since the valve stem inside the electro-hydraulic reversing valve on the market currently has the basic effect of elastic reset and centering through a spring, manually controlling the displacement of the valve stem requires constantly resisting the valve stem to prevent it from resetting, which greatly increases the operation difficulty of actual operators and seriously affects the labor output.

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

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

[0008] A manual-automatic integrated electro-hydraulic reversing valve for high-pressure pipelines according to an embodiment of the present invention includes a valve body member, solenoid valve bodies fixed on both sides of the valve body member, and an electromagnet movable inside the valve body member. It is characterized in that an electromagnetic coil is fixed inside the solenoid valve body, an electromagnet is arranged at the inner ring position close to the electromagnetic coil inside the solenoid valve body, the electromagnet is fixed on a push rod, and the push rod is aligned with the axis of the valve rod member;

[0009] The incoming line segment of the solenoid valve body is connected to the electromagnetic coil through a safety mechanism. The safety mechanism includes an insulating plug board and two groups of conductive sheets. The insulating plug board moves horizontally between the two groups of conductive sheets to control the on-off of the solenoid valve body and the electromagnetic coil.

[0010] On the front surface of the valve body part, there is a transmission mechanism and a self-locking manual component. The self-locking manual component drives the push rod and the electromagnet to move inside the solenoid valve body. At the same time, the self-locking manual component drives the insulating plug board to move between the two groups of conductive sheets prior to the movement effect of the electromagnet through the transmission mechanism.

[0011] Further, the two groups of conductive sheets are distributed oppositely. Conductive pins are fixed on the opposite sides of the conductive sheets. The conductive pins slide inside the conductive cylinders and are in contact with the surfaces of the conductive cylinders. A single group of conductive cylinders is connected to the electromagnetic coil through a wire.

[0012] Further, two groups of elastic rods are respectively fixed on the opposite sides of the two groups of conductive sheets. The conductive sheets are elastically arranged inside the solenoid valve body through the two groups of elastic rods. One end of the adjacent sides of the two groups of conductive sheets is opened as a tapered opening, and the end of the insulating plug board matches the size of this position.

[0013] Further, the self-locking manual component includes a push handle, two groups of control insertion rods, and a driving frame. The two groups of control insertion rods slide longitudinally on the left and right sides of the push handle. One end of the control insertion rod is elastically connected to the push handle through a resisting spring rod. The other end of the control insertion rod away from the resisting spring rod is tooth-conical.

[0014] Further, a number of groups of engaging grooves are horizontally opened on the side surface of the valve body part near the height position of the control insertion rod. The control insertion rod is clamped with the engaging groove through the elastic resisting effect of the resisting spring rod.

[0015] Further, a driving frame is also slidably arranged at the same side position of the valve body part and the two solenoid valve bodies. Insertion grooves are respectively opened at the positions of the driving frame close to the two groups of control insertion rods. The control insertion rods pass through the insertion grooves and are clamped with the engaging grooves. Resisting rods are respectively fixed at both ends of the driving frame, and the axes of the resisting rods coincide with the end part of the push rod.

[0016] Further, a centering pin is also fixed at the middle position between the two insertion grooves on one side of the driving frame. The driving frame is movably connected to the hinge hole at the bottom of the transmission connecting plate through the centering pin. A second stress pin is fixed on the surface of the driving frame close to the push handle. The transmission connecting plate slides in the second pin groove on one side of the transmission frame through the second stress pin, and the transmission frame is fixedly connected to the push handle.

[0017] Further, the two sides of the driving frame are elastically connected to the two solenoid valve bodies through spring members respectively. The elastic potential energy between the driving frame and the solenoid valve body is greater than the elastic potential energy of the elastic rods. The transmission frame is slidably arranged on the side surface of the valve body part 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] Figure 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 Figures 1 - 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 sets of conductive sheets 62 are distributed oppositely. Conductive pins 63 are fixed on the opposite sides of the conductive sheets 62. The conductive pins 63 slide inside the conductive cylinders 64 and are in contact with the surfaces of the conductive cylinders 64. A single set of conductive cylinders 64 is connected to the electromagnetic coil 4 through a wire. Elastic rods 65 are respectively fixed on the opposite sides of the two sets of conductive sheets 62. The conductive sheets 62 are elastically arranged inside the solenoid valve body 3 through the two sets of elastic rods 65. One end of the adjacent sides of the two sets of conductive sheets 62 is formed into a tapered opening, and the end of the insulating plug 61 matches the size of this position.

[0041] In this implementation, activity rooms are opened at positions inside the solenoid valve body 3 close to the conductive sheets 62. Two sets of conductive sheets 62 are arranged to move up and down inside the activity rooms, and the conductive sheets 62 are elastically connected to the solenoid valve body 3 through the elastic rods 65. In this way, under normal circumstances, the two sets of conductive sheets 62 are in contact with each other due to the resistance of the elastic rods 65. The solenoid valve body 3 normally realizes the conduction of the circuit through the conductive cylinders 64 and the conductive pins 63. After the insulating plug 61 is pushed into the space between the two sets of conductive sheets 62, the two sets of conductive sheets 62 are separated from each other. At this time, the conductive sheets 62 slide inside the conductive cylinders 64 through the conductive pins 63, and the circuit of the electromagnetic coil 4 is mechanically cut off, so as to protect the electromagnetic coil 4 from being burned due to the influence of the electromagnet 5.

[0042] Reference Figure 6 and Figure 8 , the self-locking manual component 9 includes a push handle 91, two sets of control insertion rods 92 and a driving frame 94. The two sets of control insertion rods 92 slide longitudinally on the left and right sides of the push handle 91. One end of the control insertion rod 92 is elastically connected to the push handle 91 through a resisting spring rod 93. The other end of the control insertion rod 92 away from the resisting spring rod 93 is in the shape of a tooth cone. A number of engaging grooves 96 are horizontally opened on the side surface of the valve body part 1 at a height position close to the control insertion rods 92. The control insertion rods 92 are clamped with the engaging grooves 96 through the elastic resisting effect of the resisting spring rods 93.

[0043] In this implementation, the two sets of control insertion rods 92 slide on both sides of the push handle 91 and achieve elastic resistance through the resisting spring rods 93. In this way, one end of the control insertion rod 92 can be engaged with the engaging grooves 96 on one side of the valve body part 1 to limit the lateral position of the push handle 91 and subsequent components. After pulling the control insertion rod 92 to squeeze the resisting spring rod 93, the push handle 91 can be unlocked, thus achieving the control effect.

[0044] Reference Figure 4 、 Figure 5 、 Figure 6 and Figure 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 Figure 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 effect that the driving frame 94 is elastically connected to the solenoid valve body 3 through the spring member will enable the driving frame 94 to achieve the operation of self-resetting after the push handle 91 is released, and synchronously drive the resetting of the pushing rod 8 and the valve rod member 2. The sliding effect of the transmission frame 77 through the slide rail will limit the movement of the transmission frame 77;

[0048] The elastic contact force between the driving frame 94 and the solenoid valve body 3 is greater than the elastic contact force of the elastic member 65 on the conductive sheet 62. In this way, when the insulating plug board 61 is pushed, the elastic member 65 will be compressed first, and then the driving frame 94 will move. On the contrary, the driving frame 94 will move first for resetting, and the elastic member 65 will drive the conductive sheet 62 to fit during resetting.

[0049] Reference Figure 6 and Figure 9 As shown in FIGS. and, the transmission mechanism 7 includes a pushing rod 71 and a transmission connecting plate 74. A first pin slot 75 is formed above the transmission connecting plate 74. The first pin slot 75 is movably connected to a first stress pin 73 at one end of the connecting carriage 72. The connecting carriage 72 slides on the top surface of the valve body member 1. One side of the connecting carriage 72 is fixedly connected to the pushing rod 71. Both ends of the pushing rod 71 are aligned with two groups of insulating plug boards 61 respectively. The top of the valve body member 1 supports and limits the positions of both ends of the pushing rod 71 through a sliding seat. The horizontal movement position distance of the first stress pin 73 inside the first pin slot 75 is the same as the horizontal movement position distance of the insulating plug board 61 between the two groups of conductive sheets 62.

[0050] In this embodiment, the connecting carriage 72 moves in the first pin slot 75 through the first stress pin 73. At this time, when the transmission connecting plate 74 yaws, the inner wall of the first pin slot 75 will push the first stress pin 73, so that the first stress pin 73 drives the connecting carriage 72 to move on the top of the valve body member 1. At the same time, the horizontal movement position distance of the first stress pin 73 inside the first pin slot 75 is the same as the distance between the insulating plug board 61 and the conductive sheet 62. This indicates that after the transmission connecting plate 74 yaws to the maximum position, the distance that the connecting carriage 72 drives the pushing rod 71 to move can just make the insulating plug board 61 be between the two groups of conductive sheets 62, thereby providing a good partition effect.

[0051] Working principle: First, the solenoid valve body 3 is directly connected to the conductive sheet 62 through the conductive cylinder 64 and the conductive pin 63. Under the conduction of the two groups of conductive sheets 62, the electromagnetic coil 4 is closed to drive the electromagnet 5 and the push rod 8 to move inside the solenoid valve body 3. One end of the push rod 8 will push the valve rod member 2 to move inside the valve body member 1, thereby changing the actual liquid flow direction. When manual control is required, first hold the push handle 91 and pull the control insertion rods 92 on both sides. The control insertion rods 92 squeeze the spring rod 93, and at the same time, the other end will disengage from the engaging groove 96 on the surface of the valve body member 1. At this time, push the push handle 91 horizontally. The push handle 91 drives the second force-receiving pin 76 to swing through the second pin slot 78 on the surface of the transmission frame 77. The second force-receiving pin 76 is fixed on the surface of the transmission connection plate 74, causing the transmission connection plate 74 to swing synchronously. At this time, the swing center of the transmission connection plate 74 is the position of the movable center of the bottom and the driving frame 94. The first pin slot 75 at its top will push the first force-receiving pin 73. The first force-receiving pin 73 drives the abutting rod 71 to move horizontally on the top of the valve body member 1 through the connecting slide 72 until one end of the abutting rod 71 pushes the insulating insertion plate 61 to insert between the two groups of conductive sheets 62. At this time, the two groups of conductive sheets 62 will slide between the conductive pin 63 and the conductive cylinder 64, and at the same time, the conductive sheet 62 realizes elastic abutting displacement through the elastic member 65 until the insulating insertion plate 61 completely enters between the two groups of conductive sheets 62 to cut off the operation. Subsequently, continue 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 connection plate 74 to change to the active position of the first force-receiving pin 73 and the first pin slot 75. At this time, the whole transmission connection plate 74 can be understood as the bottom position height remaining unchanged and the horizontal position changing, and the whole moves upward until the transmission connection plate 74 is in a vertical state. During this process, the transmission connection plate 74 will drive the driving frame 94 to change its horizontal position. The two ends of the driving frame 94 are connected to the abutting rods 97. The abutting rods 97 can push the push rod 8 inside the solenoid valve body 3, and the push rod 8 pushes the valve rod member 2 to achieve the manual control effect. Finally, release the control insertion rod 92. Under the elastic action of the spring rod 93, the control insertion rod 92 passes through the insertion slot 95 and is re-locked with the engaging groove 96 at different positions, thereby restricting the horizontal position of the driving frame 94 through the above-mentioned various components.

[0052] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes, should be covered within the protection scope of the present invention.

Claims

1. A manual and automatic electro-hydraulic reversing valve for high-pressure pipelines, comprising a valve body part (1), a solenoid valve body (3) fixed on both sides of the valve body part (1), and an electromagnet (5) movably arranged inside the valve body part (1), characterized in that, An electromagnetic coil (4) is fixed inside the solenoid valve body (3). An electromagnet (5) is arranged at the inner ring position of the solenoid valve body (3) near the electromagnetic coil (4). The electromagnet (5) is fixed on the pushing rod (8), and the pushing rod (8) is aligned with the axis of the valve rod member (2). The incoming line segment of the solenoid valve body (3) is connected to the electromagnetic coil (4) through a safety mechanism (6). The safety mechanism (6) includes an insulating plug board (61) and two groups of conductive sheets (62). The insulating plug board (61) moves horizontally between the two groups of conductive sheets (62) to control the on / off of the solenoid valve body (3) and the electromagnetic coil (4). A transmission mechanism (7) and a self-locking manual component (9) are arranged on the front surface of the valve body member (1). The self-locking manual component (9) drives the pushing rod (8) and the electromagnet (5) to move inside the solenoid valve body (3). At the same time, the self-locking manual component (9) drives the insulating plug board (61) to move between the two groups of conductive sheets (62) through the transmission mechanism (7) prior to the movement effect of the electromagnet (5). The self-locking manual component (9) includes a push handle (91), two groups of control insertion rods (92) and a driving frame (94). The two groups of control insertion rods (92) slide longitudinally on the left and right sides of the push handle (91). One end of the control insertion rod (92) is elastically connected to the push handle (91) through a resisting spring rod (93). The other end of the control insertion rod (92) away from the resisting spring rod (93) is tooth-shaped. The transmission mechanism (7) includes a pushing rod (71) and a transmission connecting plate (74). A first pin slot (75) is opened above the transmission connecting plate (74). The first pin slot (75) is movably connected to a first stress pin (73) at one end of the connecting sliding frame (72). The connecting sliding frame (72) slides on the top surface of the valve body member (1). One side of the connecting sliding frame (72) is fixedly connected to the pushing rod (71). The two ends of the pushing rod (71) are respectively aligned with the two groups of insulating plug boards (61). The two ends of the pushing rod (71) are supported and limited by a sliding seat at the top of the valve body member (1). The horizontal movement position distance of the first stress pin (73) inside the first pin slot (75) is the same as the horizontal movement position distance of the insulating plug board (61) between the two groups of conductive sheets (62).

2. The electro-hydraulic directional control valve with manual and automatic integration for high-pressure pipelines according to claim 1, characterized in that, The two groups of conductive sheets (62) are distributed oppositely. Conductive pins (63) are fixed on the opposite sides of the conductive sheets (62). The conductive pins (63) slide inside the conductive cylinders (64) and are in contact with the surfaces of the conductive cylinders (64). A single group of conductive cylinders (64) is connected to the electromagnetic coil (4) through a wire.

3. A manual and automatic electro-hydraulic reversing valve for high-pressure pipelines according to claim 2, characterized in that, Two groups of elastic rods (65) are respectively fixed on the opposite sides of the two groups of conductive sheets (62). The conductive sheets (62) are elastically arranged inside the solenoid 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 tapered opening, and the end of the insulating plug board (61) matches the dimension of this position.

4. The electro-hydraulic reversing valve for high-pressure pipeline according to claim 1, characterized in that, A plurality of groups of engaging grooves (96) are horizontally opened on the side surface of the valve body member (1) at the height position near the control insertion rod (92). The control insertion rod (92) is clamped with the engaging groove (96) through the elastic resisting effect of the resisting spring rod (93).

5. The electro-hydraulic reversing valve for high-pressure pipeline with manual and automatic integration according to claim 1, wherein A driving frame (94) is also slidably provided at the same side of the valve body (1) and the two sets of electromagnetic valve bodies (3). The driving frame (94) is provided with through slots (95) at positions close to the two sets 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 driving frame (94) is respectively fixed with a resistance rod (97) at both ends. The resistance rod (97) and the end of the pushing rod (8) have their axes coincident.

6. The self-operated and electro-hydraulic reversing valve for high-pressure pipeline according to claim 5, 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) via 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) via the second force-bearing pin (76); and the transmission frame (77) is fixedly connected to the push handle (91).

7. A manual and automatic electro-hydraulic reversing valve for high-pressure pipelines according to claim 1, characterized in that, The driving frame (94) is elastically connected to the two sets of electromagnetic valve bodies (3) via spring members at both sides thereof, 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) via a slide rail.

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