An integrated butterfly valve

Abstract

The present invention belongs to the field of hydraulic components, and specifically relates to an integrated butterfly valve, which includes a valve body, a valve plate, a rotating shaft and a handle, wherein the valve body is provided with oil ports penetrating the two end faces of the valve body; the rotating shaft penetrates the valve body from the side of the valve body, and is supported in the valve wall of the valve body through the oil port; the valve plate is placed in the oil port and connected to the rotating shaft; the rotating shaft located outside the valve body is connected to the handle; the handle is provided with an upper part of a magnetic induction switch, and the side of the valve plate is provided with a lower part of a magnetic induction switch inductively connected to the upper part of the magnetic induction switch, and the lower part of the magnetic induction switch is connected to the signal of a mining dump truck controller; the end face of the valve body located on one side of the oil port is provided with mounting holes I and II; when the valve plate is perpendicular to the axial center line of the oil port, the butterfly valve is in a closed state. Before maintenance, the hydraulic oil tank and the components connected to the hydraulic oil tank are physically isolated to facilitate maintenance of the hydraulic system without draining the hydraulic oil in the hydraulic oil tank.

Description

Technical Field

[0001] The invention belongs to the field of hydraulic components, and in particular relates to an integrated butterfly valve. Background Art

[0002] A mining dump truck is a special load-bearing vehicle used for short-distance transportation on special roads such as open-pit mines or large civil construction sites to complete rock and earth stripping and ore transportation tasks. It is widely used in various open-pit mines, hydropower projects, railway and highway construction projects and large-scale construction projects. When repairing the hydraulic system, it may be necessary to drain the hydraulic oil tank. Since the hydraulic oil tank of a mining dump truck has a large capacity, the hydraulic oil tank capacity of a large-tonnage mining dump truck can reach more than 1,000 liters. Emptying the hydraulic oil tank is time-consuming and laborious. Sometimes the time for emptying and refilling is longer than the maintenance process, and there is a risk of contamination of the hydraulic oil during the process of draining and refilling the hydraulic oil. Summary of the invention

[0003] In order to overcome the deficiencies of the above-mentioned prior art, the present invention provides an integrated butterfly valve, which physically isolates the hydraulic oil tank and the components connected to the hydraulic oil tank (i.e., disconnects the passage between the hydraulic oil tank and the hydraulic system) before maintenance, thereby facilitating maintenance of the hydraulic system without draining the hydraulic oil in the hydraulic oil tank.

[0004] The present invention is realized through the following technical scheme: an integrated butterfly valve, which includes a valve body, a valve plate, a rotating shaft and a handle, wherein the valve body is provided with oil ports penetrating the two end surfaces of the valve body; the rotating shaft penetrates into the valve body from the side of the valve body, and is supported in the valve wall of the valve body through the oil port; the valve plate is placed in the oil port and connected to the rotating shaft; the rotating shaft located outside the valve body is connected to the handle; the handle is provided with an upper part of a magnetic induction switch, the side of the valve plate is provided with a lower part of a magnetic induction switch inductively connected to the upper part of the magnetic induction switch, and the lower part of the magnetic induction switch is connected to the signal of a mining dump truck controller; the end face of the valve body located on the oil port side is provided with mounting holes I and II; when the valve plate is perpendicular to the axial center line of the oil port, the butterfly valve is in a closed state.

[0005] Furthermore, the rotating shaft obliquely penetrates the oil port.

[0006] Furthermore, the valve plate includes a shaft sleeve and a valve core plate integrally formed with the shaft sleeve, a valve plate seal is provided on the outer circumference of the valve core plate, the shaft sleeve obliquely penetrates the valve core plate, the valve plate is sleeved on the rotating shaft through the shaft sleeve, and is movably connected to the rotating shaft.

[0007] Furthermore, a pressure plate is provided on the side of the valve body, and the rotating shaft is connected to the handle after passing through the pressure plate, and a movably connected locking pin is used to pass through the rotating shaft and the pressure plate to limit the movement of the rotating shaft.

[0008] Furthermore, the handle includes a handle rod and a handle sleeve, one end of the handle sleeve is connected to the rotating shaft through a pin I, and the other end of the handle sleeve is provided with a slot, the upper part of the magnetic induction switch is placed in the slot, the handle rod is connected to the opening end of the slot of the handle sleeve, and a spring is provided between the upper part of the magnetic induction switch and the handle rod.

[0009] Furthermore, the mounting hole I is a through hole, and the butterfly valve is connected to the oil tank by a bolt passing through the mounting hole I; the mounting hole II is a threaded hole, and the hydraulic hose is connected to the mounting hole II by a bolt.

[0010] Furthermore, the lower part of the magnetic induction switch is connected to the mining dump truck controller signal through a DEUTSCH plug.

[0011] The beneficial effects of the present invention are as follows: 1. Before maintenance, the hydraulic oil tank and the components connected to the hydraulic oil tank are physically isolated (i.e., the passage between the hydraulic oil tank and the hydraulic system is disconnected), which facilitates maintenance of the hydraulic system without draining the hydraulic oil in the hydraulic oil tank;

[0012] 2. The rotating shaft and the valve body are in a relatively inclined position, which reduces the starting torque of the operation and makes the operation easy;

[0013] 3. The magnetic induction switch is embedded in the valve body and handle, with high integration, few components and easy installation;

[0014] 4. The magnetic induction switch can monitor the opening and closing status of the butterfly valve and transmit the opening and closing status to the vehicle controller. When the controller receives the butterfly valve closing signal, the controller can prohibit the vehicle from starting to prevent the driver from misoperating and causing damage to the pump due to air suction;

[0015] 5. The butterfly valve has eight mounting holes, four of which are used for fastening the butterfly valve to the hydraulic oil tank, and the other four are used for fastening the butterfly valve to the hydraulic hose, which truly isolates the hydraulic oil tank from other hydraulic components and facilitates the maintenance of the hydraulic system.

[0016] 6. The butterfly valve cuts off the hydraulic oil in the hydraulic oil tank. When repairing the hydraulic system, the hydraulic oil does not need to be drained, which improves the maintenance efficiency of the hydraulic system and reduces the risk of hydraulic oil contamination;

[0017] 7. The butterfly valve is equipped with a locking pin to prevent the butterfly valve from accidentally closing due to the bumps of the vehicle, and has high reliability;

[0018] 8. The magnetic induction switch adopts DEUTSCH plug, which is easy to install and has high electrical waterproof level, suitable for the harsh working conditions of mining dump trucks. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a cross-sectional view of the present invention;

[0020] Figure 2 for Figure 1Right view of;

[0021] Figure 3 It is a schematic diagram of the butterfly valve of the present invention in a closed state;

[0022] In the figure, 1. handle, 1-1. handle rod, 1-2. handle sleeve, 1-3. slot, 2. spring, 3. upper part of magnetic induction switch, 4. rotating shaft, 5. pin Ⅰ, 6. upper seal of rotating shaft, 7. valve plate, 7-1. sleeve, 7-2. valve core plate, 8. pin Ⅱ, 9. valve body, 9-1. oil port, 10. lower seal of rotating shaft, 11. lower part of magnetic induction switch, 12. DEUTSCH plug, 13. mounting hole Ⅰ, 14. valve plate seal, 15. mounting hole Ⅱ, 16. locking pin, 17. pressure plate. DETAILED DESCRIPTION

[0023] The present invention is further described below with reference to the accompanying drawings and embodiments.

[0024] like Figures 1 to 3 As shown, an integrated butterfly valve includes a valve body 9, a valve plate 7, a rotating shaft 4 and a handle 1. Figure 1 As shown, the valve body 9 includes two end faces. When in use, the left end face of the valve body 9 contacts the end face of the tank port of the hydraulic oil tank. The valve body 9 is also provided with a sealing ring on the left end face to play a sealing role to avoid oil leakage at the connection between the valve body 9 and the hydraulic oil tank. The right end face of the valve body 9 is connected to the hydraulic hose of the hydraulic system. The valve body 9 is provided with an oil port 9-1 that runs through the two end faces of the valve body 9; the oil port 9-1 is used to connect the oil port of the hydraulic oil tank and the hydraulic hose, so that the hydraulic oil in the hydraulic oil tank can be sent into the hydraulic hose through the oil port 9-1 to provide hydraulic oil to the hydraulic system.

[0025] like Figure 1 As shown, the rotating shaft 4 passes through the side of the valve body 9 into the valve body 9, and passes through the oil port 9-1 to be supported in the valve wall of the valve body 9; the valve plate 7 is placed in the oil port 9-1 and connected to the rotating shaft 4; a pressure plate 17 is also provided on the side of the valve body 9, and the rotating shaft 4 is connected to the handle 1 after passing through the pressure plate 17, and a movable locking pin 16 is used to pass through the rotating shaft 4 and the pressure plate 17 to limit the movement of the rotating shaft 4. The locking pin 16 acts as a safety lock to prevent the handle 1 from moving due to vibration and other reasons; when the handle 1 needs to be turned, the locking pin 16 can be removed, and the rotating shaft 4 can be driven to rotate by turning the handle 1. Two seals are provided on the rotating shaft 4, such as Figure 1 As shown, they are respectively an upper seal 6 for the rotating shaft and a lower seal 10 for the rotating shaft. The upper seal 6 for the rotating shaft and the lower seal 10 for the rotating shaft can prevent the hydraulic oil flowing in the valve body 9 from leaking out of the butterfly valve.

[0026] By turning the handle 1, the rotating shaft 4 connected thereto is driven to rotate, and then the valve plate 7 connected to the rotating shaft 4 can be rotated. When the valve plate 7 is perpendicular to the axial center line of the oil port 9-1, the butterfly valve is in a closed state. When the butterfly valve is closed, the hydraulic system can be repaired by disconnecting the hydraulic hose from the butterfly valve. When the butterfly valve is in a closed state, the hydraulic oil in the hydraulic oil tank will not flow out, that is, the hydraulic system can be repaired without draining the hydraulic oil in the hydraulic oil tank.

[0027] like Figures 1 to 3 As shown, the handle 1 is provided with a magnetic induction switch upper part 3, and the side of the valve plate 7 is provided with a magnetic induction switch lower part 11 inductively connected to the magnetic induction switch upper part 3, and the magnetic induction switch lower part 11 is connected to the mining dump truck controller signal through the Deutsch plug 12. Further, the handle 1 includes a handle rod 1-1 and a handle sleeve 1-2, one end of the handle sleeve 1-2 is connected to the rotating shaft 4 through a pin Ⅰ5, and the other end of the handle sleeve 1-2 is provided with a notch 1-3, the magnetic induction switch upper part 3 is placed in the notch 1-3, the handle rod 1-1 is connected to the open end of the notch 1-3 of the handle sleeve 1-2, and a spring 2 is provided between the magnetic induction switch upper part 3 and the handle rod 1-1, and the spring 2 presses the magnetic induction switch upper part 3 to prevent the magnetic induction switch upper part 3 from loosening. When the butterfly valve is in the closed state, starting the mining dump truck will cause the hydraulic pump to be sucked empty and thus cause the hydraulic pump to be scrapped. To prevent this, when the mining dump truck controller determines that the butterfly valve is in the closed state based on the signal sent by the DEUTSCH plug 12, the mining dump truck will be unable to start at this time to prevent the driver from misoperating and causing the hydraulic pump to be sucked empty and damaged.

[0028] The valve plate 7 includes a sleeve 7-1 and a valve core plate 7-2 integrally formed with the sleeve 7-1, and a valve plate seal 14 is provided on the outer circumference of the valve core plate 7-2. The valve plate 7 is sleeved on the rotating shaft 4 through the sleeve 7-1, and is movably connected to the rotating shaft 4 through the pin II 8. The valve core plate 7-2 is adjusted by rotating the handle 1 to drive the rotating shaft 4 to rotate and then drive the valve plate 7 to rotate. When the plate surface of the valve core plate 7-2 is perpendicular to the axial center line of the oil port 9-1, the valve core plate 7-2 seals the entire oil port 9-1, and a valve plate seal 14 is provided on the outer circumference of the valve core plate 7-2. The valve plate seal 14 is in close contact with the oil wall of the oil port 9-1, blocking the gap between the valve core plate 7-2 and the oil port 9-1, preventing the oil in the hydraulic oil tank from leaking out, and ensuring the sealing effect of the butterfly valve.

[0029] In the present application, one end of the rotating shaft 4 can pass vertically through the oil port 9-1 and then be supported in the valve wall of the valve body 9. At this time, the valve core plate 7-2 and the shaft sleeve 7-1 can be matched in a variety of structural forms. For example, the valve core plate 7-2 is divided into two plates, which are symmetrically arranged on both sides of the shaft sleeve 7-1, and the two plates are in the same plane; or the valve core plate 7-2 is a plate, which is arranged on one side of the shaft sleeve 7-1, so that when the plate surface of the valve core plate 7-2 is perpendicular to the axial center line of the oil port 9-1, the valve core plate 7-2 can seal the entire oil port 9-1.

[0030] In the present application, it is preferred that the rotating shaft 4 obliquely penetrates the oil port 9-1, such as Figure 1 As shown, the rotating shaft 4 is arranged obliquely from top to bottom toward the hydraulic hose connection side. The rotating shaft 4 and the valve body 9 are in a relatively inclined position, which can reduce the starting torque of the valve plate 7 when it rotates with the rotating shaft 4. For butterfly valves with large diameters, low starting torque can greatly reduce the operating intensity and improve the operating comfort. For the case where the rotating shaft 4 is oblique, the structure of the valve plate 7 needs to be adjusted accordingly. The shaft sleeve 7-1 obliquely penetrates the valve core plate 7-2 (the valve core plate 7-2 is in the form of a plate) to ensure that when the shaft sleeve 7-1 is fitted with the rotating shaft 4, the valve core plate 7-2 is still in a vertical state relative to the oil port 9-1. When the valve core plate 7-2 is rotated so that the plate surface of the valve core plate 7-2 is perpendicular to the axial center line of the oil port 9-1, the valve core plate 7-2 can seal the entire oil port 9-1. At the same time, the arrangement of the valve core plate 7-2 and the shaft sleeve 7-1 makes the valve plate seal 14 located on both sides of the rotating shaft 4, so that even if the valve plate seal 14 falls off from the valve core plate 7-2, it will be restricted by the rotating shaft 4 to prevent the valve plate seal 14 from being sucked into the hydraulic system after falling off.

[0031] like Figure 2 and Figure 3 As shown, four mounting holes Ⅰ13 and four mounting holes Ⅱ15 are provided on the end surface of the valve body 9 connected to the hydraulic hose; the mounting hole Ⅰ13 is a through hole, and the butterfly valve is connected to the oil tank by bolts passing through the mounting hole Ⅰ13; the mounting hole Ⅱ15 is a threaded hole, and the hydraulic hose is connected to the mounting hole Ⅱ15 by bolts. When the hydraulic system needs to be repaired, after closing the butterfly valve, only the bolts at the mounting hole Ⅱ15 need to be removed to remove the hydraulic hose for maintenance.

[0032] like Figure 2 As shown, rotate the handle 1 until the handle and the valve body 9 are in the same plane (at this time, the valve core plate 7-2 is perpendicular to the axial center line of the oil port 9-1, and the butterfly valve is in a closed state). At this time, the hydraulic oil cannot flow through the butterfly valve. In this state, the upper part of the magnetic induction switch and the lower part of the magnetic induction switch are not in the same plane. The mining dump truck controller determines that the butterfly valve is closed based on the signal sent by the DEUTSCH plug 12, making the vehicle unable to start, thereby preventing the driver from starting the vehicle by mistake.

[0033] like Figure 3 As shown, rotate the handle 1 until the handle and the valve body 9 are in a mutually perpendicular state (at this time, the valve core plate 7-2 is parallel to the axial center line of the oil port 9-1, and the butterfly valve is in a fully open state). At this time, the hydraulic oil can flow freely through the butterfly valve. In this state, the upper part of the magnetic induction switch and the lower part of the magnetic induction switch are in the same plane. The mining dump truck controller determines that the butterfly valve is in an open state based on the signal sent by the DEUTSCH plug 12, so that the vehicle has a starting function.

Claims

1. An integrated butterfly valve, characterized in that: The butterfly valve comprises a valve body (9), a valve plate (7), a rotating shaft (4) and a handle (1); the valve body (9) is provided with oil ports (9-1) penetrating the two end surfaces of the valve body (9); the rotating shaft (4) penetrates into the valve body (9) from the side of the valve body (9) and passes through the oil ports (9-1) to be supported in the valve wall of the valve body (9); the valve plate (7) is placed in the oil ports (9-1) and connected to the rotating shaft (4), and the rotating shaft (4) obliquely penetrates the oil ports (9-1); the rotating shaft (4) located outside the valve body (9) The shaft (4) is connected to the handle (1); the handle (1) is provided with an upper magnetic induction switch portion (3); the side of the valve plate (7) is provided with a lower magnetic induction switch portion (11) which is inductively coupled to the upper magnetic induction switch portion (3); the lower magnetic induction switch portion (11) is connected to a signal of a controller for a mining dump truck; the end surface of the valve body (9) located on one side of the oil port (9-1) is provided with a mounting hole I (13) and a mounting hole II (15); when the valve plate (7) is perpendicular to the axial center line of the oil port (9-1), the butterfly valve is in a closed state; The valve plate (7) comprises a shaft sleeve (7-1) and a valve core plate (7-2) integrally formed with the shaft sleeve (7-1); a valve plate seal (14) is provided on the outer circumference of the valve core plate (7-2); the shaft sleeve (7-1) obliquely penetrates the valve core plate (7-2); the valve plate (7) is sleeved on the rotating shaft (4) through the shaft sleeve (7-1) and is movably connected to the rotating shaft (4); thus, a starting torque when the valve plate (7) rotates with the rotating shaft (4) can be reduced.

2. An integrated butterfly valve according to claim 1, characterized in that: A pressure plate (17) is also provided on the side of the valve body (9); the rotating shaft (4) passes through the pressure plate (17) and is connected to the handle (1); and a movable locking pin (16) passes through the rotating shaft (4) and the pressure plate (17) to limit the movement of the rotating shaft (4).

3. The integrated butterfly valve according to claim 1, characterized in that: The handle (1) comprises a handle rod (1-1) and a handle sleeve (1-2); one end of the handle sleeve (1-2) is connected to a rotating shaft (4) via a pin I (5); the other end of the handle sleeve (1-2) is provided with a notch (1-3); the upper part (3) of the magnetic induction switch is placed in the notch (1-3); the handle rod (1-1) is connected to an open end of the notch (1-3) of the handle sleeve (1-2); and a spring (2) is provided between the upper part (3) of the magnetic induction switch and the handle rod (1-1).

4. The integrated butterfly valve according to claim 1, characterized in that: The mounting hole I (13) is a through hole, and the butterfly valve is connected to the oil tank by a bolt passing through the mounting hole I (13); the mounting hole II (15) is a threaded hole, and the hydraulic hose is connected to the mounting hole II (15) by a bolt.

5. An integrated butterfly valve according to any one of claims 1 to 4, characterized in that: The lower part (11) of the magnetic induction switch is connected to the controller signal of the mining dump truck via a Deutsch plug (12).

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