Electrically controlled reversing valve for oil

Abstract

The utility model discloses an electric control reversing valve of oil delivery relates to the technical field of fuel oil reversing valve, the utility model aims at solving the problem of the replacement of existing oil delivery reversing valve difficult accurate judgment fuel oil and two kinds of fuel oil return present confusion, the utility model includes the valve body and pump group, the valve body installs on pump group, the valve body is connected with 0 oil feed port, -35 oil feed port, oil outlet, oil inlet, 0 oil return port and -35 oil return port, the oil outlet is through the oil pipe with pump group intercommunication, the oil inlet is through the oil pipe with pump group intercommunication, 0 oil feed port, -35 oil feed port and oil outlet are located on the same section, 0 oil return port, -35 oil return port and oil inlet are located on the same section, the valve body is rotatably connected with the valve core, and two open and close notches are arranged on the valve core.

Description

Technical Field

[0001] This utility model relates to the technical field of fuel reversing valves, specifically to an electronically controlled fuel reversing valve. Background Technology

[0002] Winters in the north are quite cold. Large vehicles are usually equipped with two fuel tanks in winter, one for holding No. 0 fuel and the other for holding No. -35 fuel. The two fuel tanks are connected to the high-pressure pump by a three-way reversing valve to realize the conversion between the two types of diesel fuel, so that the driver can switch to diesel fuel according to the weather temperature.

[0003] refer to Figure 12 For two fuel tanks, a fuel supply pipe is needed to connect the output ports of both tanks to the fuel pump, and a return pipe is needed to connect the output port of the fuel pump to both tanks. The supply pipe delivers fuel to the high-pressure pump, and the return pipe returns any unused fuel from the engine to the tanks. However, when using an existing three-way reversing valve to connect the tanks, residual fuel from the previous type will remain in both the supply and return pipes. This requires the driver to idle the engine for a period after the reversal to ensure the new fuel can be used in the engine. The specific idling time depends on the driver's experience and cannot accurately determine the fuel replacement status. Furthermore, residual fuel in the supply and return pipes will enter the replaced fuel tank, causing confusion between #0 and -35 fuel. In other words, residual fuel from the previous type will remain in the supply and return pipes between the reversing valve and the fuel pump, leading to confusion with the replaced fuel. Utility Model Content

[0004] To address the aforementioned problems—namely, the inability of existing fuel transfer directional valves to accurately determine fuel change status and the potential for confusion between the two types of fuel return—this invention proposes an electronically controlled fuel transfer directional valve. The valve body comprises a valve body and a pump assembly. The valve body is mounted on the pump assembly and is connected to a No. 0 fuel inlet, a No. -35 fuel inlet, a fuel outlet, a fuel inlet, a No. 0 return fuel outlet, and a No. -35 return fuel outlet. The fuel outlet is connected to the pump assembly via a fuel outlet pipe, and the fuel inlet is connected to the pump assembly via a fuel inlet pipe. Oil inlet No. 0, oil inlet No. -35, and oil outlet are located on the same cross section. Oil return port No. 0, oil return port No. -35, and oil inlet are located on the same cross section. A valve core is rotatably connected to the valve body. The valve core is provided with two opening and closing notches. One of the opening and closing notches is set to the cross section of oil inlet No. 0, oil inlet No. -35, and oil outlet. The other opening and closing notch is set to the cross section of oil return port No. 0, oil return port No. -35, and oil inlet.

[0005] A further feature of this invention is as follows: the No. 0 oil inlet is connected to the No. 0 oil tank via the No. 0 oil inlet pipe; the No. 0 oil return inlet is connected to the No. 0 oil tank via the No. 0 oil return pipe; the No. -35 oil inlet is connected to the No. -35 oil tank via the No. -35 oil inlet pipe; the No. -35 oil return inlet is connected to the No. -35 oil tank via the No. -35 oil return pipe; a three-way valve is installed on the No. 0 oil inlet pipe; one port of the three-way valve is connected to a high-pressure air source; a backflush chamber is also provided inside the valve body; the No. 0 oil inlet and the No. 0 oil return inlet are connected through the backflush chamber; a solenoid valve is installed inside the backflush chamber.

[0006] The present invention is further configured as follows: the No. 0 oil inlet is connected to the No. 0 oil tank via the No. 0 oil inlet pipe; the No. 0 oil return inlet is connected to the No. 0 oil tank via the No. 0 oil return pipe; the No. -35 oil inlet is connected to the No. -35 oil tank via the No. -35 oil inlet pipe; the No. -35 oil return inlet is connected to the No. -35 oil tank via the No. -35 oil return pipe; the valve body is also connected to two high-pressure air inlets, each connected to a high-pressure air source; one of the air inlets is connected to the No. 0 oil inlet, and the other is connected to the No. 0 oil return inlet; the valve core is also provided with air source notches corresponding to the two air inlets.

[0007] A further feature of this invention is that the pump set includes a low-pressure pump and a high-pressure pump, the oil outlet pipe is connected to the input end of the low-pressure pump, the output end of the low-pressure pump is connected to the input end of the high-pressure pump, and the output end of the high-pressure pump is connected to the oil inlet pipe.

[0008] A further feature of this invention is that a water bath is fitted around the outside of the valve body, the inlet of the water bath is connected to the outlet of the water tank, and the outlet of the water bath is connected to the inlet of the water tank.

[0009] A further feature of this invention is that one end of the valve core extends out of the valve body, and the extended end of the valve core is connected to a drive device for driving the valve core to rotate.

[0010] The beneficial effects of this utility model are as follows:

[0011] 1. By installing the valve body on the pump unit, the valve body can be directly connected to the pump unit. Furthermore, by using the No. 0 oil supply pipe, No. 0 oil return pipe, -35 oil supply pipe, and -35 oil return pipe to connect with the reversing valve, the long shared oil pipes for No. 0 oil and -35 oil are eliminated, further reducing the amount of fuel mixing between the two types during reversing.

[0012] 2. By installing a three-way valve on the No. 0 oil delivery pipe, air can be introduced into the No. 0 oil delivery pipe. Then, by opening the solenoid valve, the gas can be allowed to enter the No. 0 return oil pipe through the backflush chamber. Furthermore, when the No. 0 diesel fuel in the No. 0 oil delivery pipe and the No. 0 return oil pipe waxes due to cold weather, the waxed No. 0 diesel fuel can be blown into the No. 0 fuel tank by high-pressure gas, thus avoiding blockage of the No. 0 diesel fuel.

[0013] 3. By setting up a water bath, the water in the water tank can be used to heat the valve body. After the vehicle has been running on -35# fuel for a period of time, the water temperature in the water tank will rise, which will heat the valve body. At this time, the valve core can be turned to run on 0# fuel, thereby reducing the consumption of -35# fuel and saving driving costs.

[0014] 4. By setting two air inlets, it is also possible to blow the dewaxing oil in the No. 0 oil supply pipe and the No. 0 oil return pipe back into the No. 0 oil tank, thus preventing the dewaxing oil from causing blockage. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of Embodiment 1 is shown.

[0016] Figure 2 The diagram shows the oil delivery status of No. 0 in Example 1.

[0017] Figure 3 The diagram shows the oil return state of No. 0 in Example 1.

[0018] Figure 4 The diagram shows the oil delivery status of No. -35 in Example 1.

[0019] Figure 5 The diagram shows the return oil status of No. -35 in Example 1.

[0020] Figure 6 A schematic diagram of the structure of Embodiment 1 is shown.

[0021] Figure 7 The diagram shows the oil delivery status of No. 0 in Example 2.

[0022] Figure 8 The diagram shows the oil return state of No. 0 in Example 2.

[0023] Figure 9 The diagram shows the oil delivery status of No. -35 in Example 2.

[0024] Figure 10 The diagram showing the return oil status of No. -35 in Example 2 is illustrated.

[0025] Figure 11 A diagram showing the blowing state is provided.

[0026] Figure 12 A schematic diagram of the prior art is shown.

[0027] Figure 13 A schematic diagram of the structure of this utility model and the fuel tank is shown.

[0028] Reference numerals in the attached diagram: 1. Valve body; 11. Oil inlet No. 0; 111. Oil inlet No. 0; 12. Oil inlet No. -35; 121. Oil inlet No. -35; 13. Oil outlet; 14. Oil inlet; 15. Oil return port No. 0; 151. Oil return pipe No. 0; 16. Oil return port No. -35; 161. Oil return pipe No. -35; 17. Valve core; 171. Opening / closing notch; 172. Air source notch; 18. Drive unit; 19. Backflush chamber; 191. Solenoid valve; 2. Pump set; 21. Low-pressure pump; 22. High-pressure pump; 3. Oil outlet pipe; 4. Oil inlet pipe; 5. Water bath; 51. Water inlet; 52. Water outlet; 6. Air inlet. Detailed Implementation

[0029] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0030] Example 1

[0031] refer to Figure 1 This utility model proposes an electrically controlled reversing valve for oil delivery, comprising a valve body and a pump assembly. The valve body is fixedly mounted on the pump assembly by bolts. The valve body has an oil supply port (No. 0), an oil supply port (No. -35), an oil outlet, an oil inlet, an oil return port (No. 0), and an oil return port (No. -35), all of which are connected to the valve cavity. The oil supply port (No. 0) and the oil return port (No. -35) are used to supply No. 0 oil or No. -35 oil into the valve body, respectively. The oil return port (No. 0) and the oil return port (No. -35) are used to return any unburned No. 0 oil or No. -35 oil that flows back into the valve body.

[0032] The oil outlet is connected to the pump unit via the oil outlet pipe to send No. 0 oil or No. -35 oil delivered into the valve body into the pump unit. The oil inlet is connected to the pump unit via the oil inlet pipe to send unburned No. 0 oil and No. -35 oil back into the pump unit.

[0033] Oil inlet No. 0, oil inlet No. -35, and oil outlet are located on the same cross section, and oil inlet No. 0 and oil inlet No. -35 are symmetrically arranged with respect to oil outlet. Oil return port No. 0, oil return port No. -35, and oil inlet are located on the same cross section, and oil return port No. 0 and oil return port No. -35 are symmetrically arranged with respect to oil inlet. A valve core is rotatably connected to the valve body. The valve core has two opening and closing notches. One opening and closing notch corresponds to the cross section of oil inlet No. 0, oil inlet No. -35, and oil outlet, and the other opening and closing notch corresponds to oil return port No. 0, oil return port No. -35, and oil inlet.

[0034] It should be noted that the opening and closing notch can precisely meet the connection requirements of the two oil ports. That is, since the No. 0 oil inlet and the -35 oil inlet are symmetrically arranged with respect to the oil outlet, rotating the valve core can ensure that the No. 0 oil inlet connects to the oil outlet or the -35 oil inlet connects to the oil outlet. (Refer to...) Figure 2 This means rotating the valve core to the position that connects the No. 0 oil inlet to the oil outlet. (Refer to...) Figure 4 This means the valve core rotates to the position connecting the -35 oil supply port and the oil outlet. Similarly, the other opening / closing notch controls the 0 oil return port and the -35 oil return port in the same way; that is, when the valve core rotates to the position where the 0 oil supply port and the oil outlet are connected, refer to... Figure 3 The other opening / closing notch is also rotated to connect the No. 0 return port with the inlet port. When the valve core rotates to connect the No. -35 delivery port with the outlet port, refer to... Figure 5 The other opening / closing notch is also rotated to connect the -35 oil return port with the oil inlet port.

[0035] Oil inlet 0 is connected to oil tank 0 via oil inlet pipe 0. Oil return inlet 0 is connected to oil tank 0 via oil return pipe 0. Oil inlet -35 is connected to oil tank -35 via oil inlet pipe -35. Oil return inlet -35 is connected to oil tank -35 via oil pipe -35. A three-way valve is installed on oil inlet 0. Two of the three ports of the three-way valve are used to connect to oil inlet 0, and the other is used to connect to the high-pressure gas source. The valve body has a backflush chamber. The No. 0 oil supply port and the No. 0 oil return port are connected through the backflush chamber, which is connected to a solenoid valve. The solenoid valve is normally closed. When it is necessary to switch from -35 oil to No. 0 oil in winter, the No. 0 oil supply pipe and the No. 0 oil return pipe need to be blown out under high pressure. That is, due to the cold weather, No. 0 oil will condense and wax in the No. 0 oil supply pipe and the No. 0 oil return pipe, affecting the delivery of No. 0 oil. At this time, the solenoid valve is opened, and the three-way valve is driven to close the oil inlet end of the No. 0 oil supply pipe and open the oil outlet end and the air source end of the No. 0 oil supply pipe. High pressure gas is blown into the No. 0 oil supply pipe and then into the No. 0 oil return pipe through the backflush chamber. This achieves the purpose of blowing out the waxed No. 0 oil in the No. 0 oil supply pipe and the No. 0 oil return pipe and blowing it into the No. 0 oil tank to prevent the waxed No. 0 oil from affecting the delivery of oil.

[0036] The pump set includes a low-pressure pump and a high-pressure pump. The end of the oil outlet pipe away from the valve body is connected to the input end of the low-pressure pump, the output end of the low-pressure pump is connected to the input end of the high-pressure pump, and the output end of the high-pressure pump is connected to the end of the oil inlet pipe away from the valve body.

[0037] The fuel in the valve body can be sent to the low-pressure pump through the fuel outlet pipe, and then from the low-pressure pump to the high-pressure pump. The high-pressure pump then sends the fuel into the engine for combustion. Not all of the fuel sent into the engine is burned. The unburned fuel is sent back to the high-pressure pump, and then from the output of the high-pressure pump through the fuel inlet pipe back into the valve body. Finally, it is sent back to the fuel tank through the No. 0 or No. -35 fuel return port and the No. 0 or No. -35 fuel return pipe.

[0038] The valve body is integrally fitted with a water bath, which includes an inlet and an outlet. The inlet connects to the output of the vehicle's radiator, and the outlet connects to the input of the radiator, allowing the water in the radiator to circulate within the water bath. This means that after the vehicle has been driven for a period of time, the water temperature in the radiator will rise, and this increased water temperature will heat the valve body. Even if the ambient temperature is low, the valve body, heated by the water, can still use No. 0 fuel, thus reducing fuel costs.

[0039] The valve core extends out of the valve body from the end opposite to the water inlet and is connected to a drive device via a coupling. The drive device is a motor, which is fixed to the valve body with bolts. The drive device drives the valve core to rotate.

[0040] Work process:

[0041] When a vehicle is first started in winter: initially, the valve core's opening and closing notch is located at the position connecting the -35 oil supply port and the oil outlet, and the vehicle is using -35 oil at this time.

[0042] After the vehicle has been running on -35# fuel for a period of time: the water temperature in the vehicle's water tank gradually rises, heating the valve body until its temperature is suitable for using #0# fuel. At this point, the solenoid valve and three-way valve are opened, allowing high-pressure air to blow out the #0# fuel supply and return lines, returning the waxy #0# fuel inside to the #0# fuel tank. Then, via the drive mechanism, the valve core's opening / closing notch is rotated to the position connecting the #0# fuel supply and outlet, causing the vehicle to begin burning #0# fuel.

[0043] Before the vehicle needs to be stopped: the valve core is driven back to the position connecting the -35 oil inlet and outlet by the drive device, so that -35 oil can be used directly when starting the vehicle next time, avoiding the vehicle from failing to start properly due to the use of 0 oil.

[0044] Example 2

[0045] refer to Figure 6 This embodiment proposes an electrically controlled reversing valve for oil delivery, comprising a valve body and a pump assembly. The valve body is fixedly mounted on the pump assembly by bolts. The valve body has an oil supply port (No. 0), an oil supply port (No. -35), an oil outlet, an oil inlet, an oil return port (No. 0), and an oil return port (No. -35), all of which are connected to the valve cavity. The oil supply port (No. 0) and the oil supply port (No. -35) are used to supply No. 0 oil or No. -35 oil into the valve body, respectively. The oil return port (No. 0) and the oil return port (No. -35) are used to return any unburned No. 0 oil or No. -35 oil that flows back into the valve body.

[0046] The oil outlet is connected to the pump unit via the oil outlet pipe to send No. 0 oil or No. -35 oil delivered into the valve body into the pump unit. The oil inlet is connected to the pump unit via the oil inlet pipe to send unburned No. 0 oil and No. -35 oil back into the pump unit.

[0047] Oil inlet No. 0, oil inlet No. -35, and oil outlet are located on the same cross section, and oil inlet No. 0 and oil inlet No. -35 are symmetrically arranged with respect to oil outlet. Oil return port No. 0, oil return port No. -35, and oil inlet are located on the same cross section, and oil return port No. 0 and oil return port No. -35 are symmetrically arranged with respect to oil inlet. A valve core is rotatably connected to the valve body. The valve core has two opening and closing notches. One opening and closing notch corresponds to the cross section of oil inlet No. 0, oil inlet No. -35, and oil outlet, and the other opening and closing notch corresponds to oil return port No. 0, oil return port No. -35, and oil inlet.

[0048] It should be noted that the opening and closing notch can precisely meet the connection requirements of the two oil ports. That is, since the No. 0 oil inlet and the -35 oil inlet are symmetrically arranged with respect to the oil outlet, rotating the valve core can ensure that the No. 0 oil inlet connects to the oil outlet or the -35 oil inlet connects to the oil outlet. (Refer to...) Figure 7 This means rotating the valve core to the position that connects the No. 0 oil inlet to the oil outlet. (Refer to...) Figure 9 This means the valve core rotates to the position connecting the -35 oil supply port and the oil outlet. Similarly, the other opening / closing notch controls the 0 oil return port and the -35 oil return port in the same way; that is, when the valve core rotates to the position where the 0 oil supply port and the oil outlet are connected, refer to... Figure 8 The other opening / closing notch is also rotated to connect the No. 0 return port with the inlet port. When the valve core rotates to connect the No. -35 delivery port with the outlet port, refer to... Figure 10 The other opening / closing notch is also rotated to connect the -35 oil return port with the oil inlet port.

[0049] refer to Figure 13Oil inlet 0 is connected to oil tank 0 via oil inlet pipe 0, and oil return port 0 is also connected to oil tank 0 via oil return pipe 0. Oil inlet -35 is connected to oil tank -35 via oil inlet pipe -35, and oil return port -35 is connected to oil tank -35. There are also two high-pressure air inlets on the valve body, which are connected to a high-pressure air source. The two air inlets are connected to oil inlet 0 and oil return port 0 respectively via the valve body, that is, the air inlets are connected to the inner cavity of the valve body. There are also two air source notches on the side of the valve core opposite to the opening and closing notch. Rotating the valve core connects the air source notches to the air inlets, and the two air source notches are also connected to oil inlet 0 and oil return port 0 respectively. This allows the two air inlets to be connected to oil inlet 0 and oil return port 0 respectively, thereby blowing the waxed oil in oil inlet pipe 0 and oil return pipe 0 back to oil tank 0, avoiding affecting the delivery of oil.

[0050] refer to Figure 11 It should be noted that when the gas source gap is rotated to connect the air inlet and the oil inlet, the opening and closing gap is at this time connected to the oil supply port -35 and the oil outlet, as well as connected to the oil return port -35 and the oil inlet, but not in the maximum connection state.

[0051] Before switching from -35# oil to #0# oil in winter, the #0# oil delivery pipe and #0# oil return pipe need to be purged under high pressure. Due to the cold weather, #0# oil will condense and form wax in the #0# oil delivery pipe and #0# oil return pipe, affecting the delivery of #0# oil. At this time, the solenoid valve is opened, and the three-way valve is driven to close the oil inlet end of the #0# oil delivery pipe, while opening the oil outlet end and air source end of the #0# oil delivery pipe. High-pressure gas is blown into the #0# oil delivery pipe and then into the #0# oil return pipe through the backflush chamber. This removes the waxed #0# oil from the #0# oil delivery pipe and #0# oil return pipe, allowing it to be blown into the #0# oil tank, thus preventing the waxed #0# oil from affecting the delivery of the oil.

[0052] The pump set includes a low-pressure pump and a high-pressure pump. The end of the oil outlet pipe away from the valve body is connected to the input end of the low-pressure pump, the output end of the low-pressure pump is connected to the input end of the high-pressure pump, and the output end of the high-pressure pump is connected to the end of the oil inlet pipe away from the valve body.

[0053] The fuel in the valve body can be sent to the low-pressure pump through the fuel outlet pipe, and then from the low-pressure pump to the high-pressure pump. The high-pressure pump then sends the fuel into the engine for combustion. Not all of the fuel sent into the engine is burned. The unburned fuel is sent back to the high-pressure pump, and then from the output of the high-pressure pump through the fuel inlet pipe back into the valve body. Finally, it is sent back to the fuel tank through the No. 0 or No. -35 fuel return port and the No. 0 or No. -35 fuel return pipe.

[0054] The valve body is integrally fitted with a water bath, which includes an inlet and an outlet. The inlet connects to the output of the vehicle's radiator, and the outlet connects to the input of the radiator, allowing the water in the radiator to circulate within the water bath. This means that after the vehicle has been driven for a period of time, the water temperature in the radiator will rise, and this increased water temperature will heat the valve body. Even if the ambient temperature is low, the valve body, heated by the water, can still use No. 0 fuel, thus reducing fuel costs.

[0055] The valve core extends out of the valve body from the end opposite to the water inlet and is connected to a drive device via a coupling. The drive device is a motor, which is fixed to the valve body with bolts. The drive device drives the valve core to rotate.

[0056] Work process:

[0057] When a vehicle is first started in winter: initially, the valve core's opening and closing notch is located at the position connecting the -35 oil supply port and the oil outlet, and the vehicle is using -35 oil at this time.

[0058] After the vehicle has been running on -35# fuel for a period of time: the water temperature in the vehicle's water tank gradually rises, heating the valve body. The temperature inside the valve body is now suitable for using 0# fuel. At this point, the drive mechanism rotates the valve core, turning it until the air supply gap connects to the air intake pipe and the 0# fuel inlet, while keeping the opening / closing gap connected to the -35# fuel inlet and outlet. Figure 11 As shown, the high-pressure air source blows through the No. 0 oil supply pipe and the No. 0 oil return pipe to return the wax-removing No. 0 oil inside to the No. 0 oil tank. Then, through the drive device, the valve core's opening and closing notch is rotated to the position connecting the No. 0 oil supply port and the oil outlet, causing the vehicle to start burning No. 0 oil.

[0059] Before the vehicle needs to be stopped: the valve core is driven back to the position connecting the -35 oil inlet and outlet by the drive device, so that -35 oil can be used directly when starting the vehicle next time, avoiding the vehicle from failing to start properly due to the use of 0 oil.

[0060] In summary, this utility model, by installing the valve body on the pump unit, allows the valve body to be directly connected to the pump unit. Furthermore, by utilizing the No. 0 fuel delivery pipe, No. 0 fuel return pipe, -35 fuel delivery pipe, and -35 fuel return pipe to connect with the reversing valve, the long shared fuel pipes for No. 0 and -35 fuels are eliminated, further reducing the amount of fuel mixing between the two types during reversal. By installing a three-way valve on the No. 0 fuel delivery pipe, air can be introduced into the No. 0 fuel delivery pipe. Then, by opening the solenoid valve, gas can be allowed to enter the No. 0 fuel return pipe through the backflush chamber. Furthermore, when the No. 0 diesel fuel in the No. 0 fuel delivery and return pipes waxes due to cold weather, high-pressure gas can be used to blow the waxed No. 0 diesel fuel into the No. 0 fuel tank, preventing blockages in the use of No. 0 diesel fuel. By incorporating a water bath, the valve body can be heated using the water in the tank. After the vehicle has been running on -35# fuel for a period of time, the water temperature in the tank rises, heating the valve body. At this point, the valve core can be rotated to switch to 0# fuel, thus reducing the consumption of -35# fuel and saving on operating costs. The two air inlets also allow the dewaxing oil in the 0# fuel supply and return lines to be blown back into the 0# fuel tank, preventing blockages caused by the dewaxing oil.

[0061] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0062] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0063] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0064] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0065] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. An electrically controlled directional valve for oil transportation, characterized in that: The device includes a valve body and a pump assembly. The valve body is mounted on the pump assembly and has connections to an oil inlet (0), an oil outlet (-35), an oil inlet (inlet), a return oil inlet (0), and a return oil inlet (-35). The oil outlet is connected to the pump assembly via an oil outlet pipe, and the oil inlet is connected to the pump assembly via an oil inlet pipe. The oil inlet (0), the oil outlet (-35), and the oil outlet are located on the same cross-section, as are the return oil inlet (0), the return oil inlet (-35), and the oil inlet. A valve core is rotatably connected within the valve body. The valve core has two opening / closing notches, one of which corresponds to the cross-section of the oil inlet (0), the oil outlet (-35), and the oil outlet, and the other corresponding to the return oil inlet (0), the return oil inlet (-35), and the oil inlet.

2. The oil delivery electronically controlled directional valve according to claim 1, characterized in that: The No. 0 oil inlet is connected to the No. 0 oil tank via the No. 0 oil inlet pipe, and the No. 0 oil return inlet is connected to the No. 0 oil tank via the No. 0 oil return pipe. The No. 35 oil inlet is connected to the No. 35 oil tank via the No. 35 oil inlet pipe, and the No. 35 oil return inlet is connected to the No. 35 oil tank via the No. 35 oil return pipe. A three-way valve is installed on the No. 0 oil inlet pipe, and one port of the three-way valve is connected to a high-pressure air source. A backflush chamber is also provided in the valve body, and the No. 0 oil inlet and the No. 0 oil return inlet are connected through the backflush chamber. A solenoid valve is installed in the backflush chamber.

3. The oil delivery electronically controlled directional valve according to claim 1, characterized in that: The No. 0 oil inlet is connected to the No. 0 oil tank via the No. 0 oil inlet pipe, and the No. 0 oil return inlet is connected to the No. 0 oil tank via the No. 0 oil return pipe. The No. -35 oil inlet is connected to the No. -35 oil tank via the No. -35 oil inlet pipe, and the No. -35 oil return inlet is connected to the No. -35 oil tank via the No. -35 oil return pipe. The valve body is also connected to two high-pressure air inlets, which are connected to a high-pressure air source. One of the air inlets is connected to the No. 0 oil inlet, and the other is connected to the No. 0 oil return inlet. The valve core is also provided with air source notches corresponding to the two air inlets.

4. The oil delivery electronically controlled directional valve according to claim 1, characterized in that: The pump set includes a low-pressure pump and a high-pressure pump. The oil outlet pipe is connected to the input end of the low-pressure pump, the output end of the low-pressure pump is connected to the input end of the high-pressure pump, and the output end of the high-pressure pump is connected to the oil inlet pipe.

5. The oil delivery electronically controlled directional valve according to claim 1, characterized in that: A water bath is fitted on the outside of the valve body. The inlet of the water bath is connected to the outlet of the water tank, and the outlet of the water bath is connected to the inlet of the water tank.

6. The oil delivery electronically controlled directional valve according to claim 1, characterized in that: One end of the valve core extends out of the valve body, and the extended end of the valve core is connected to a drive device for driving the valve core to rotate.

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