Fuel tank vent valve capable of effectively reducing deposition of condensate water in diesel oil

Abstract

The utility model discloses a fuel tank vent valve capable of effectively reducing condensate water deposition in diesel oil, and relates to the technical field of diesel engine operation oil supply oil tanks, the fuel tank vent valve comprises an oil tank, the top of the oil tank is fixedly connected with a connecting pipe, and the top end of the connecting pipe is fixedly connected with a vent valve. By arranging the vent valve, when the diesel engine is in a standby state, the environment temperature is reduced, and the air pressure in the oil tank is smaller than the atmospheric pressure outside the oil tank, and when the diesel engine operates, fuel oil stored in the oil tank is gradually reduced, and the air pressure in the oil tank is smaller than the atmospheric pressure outside the oil tank. Air outside the oil tank enters the oil tank through the one-way valve and the dryer so as to balance the air pressure inside and outside the oil tank, meanwhile, the air entering the oil tank is dried, and if the pressure in the oil tank rises due to the temperature change in the oil tank, the air in the oil tank is discharged into the atmosphere through the other reverse one-way valve. And the vent valve avoids the deposition of condensate water in the oil tank, so that the quality of fuel oil is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of diesel engine running fuel supply tanks, and in particular to a fuel tank vent valve which can effectively reduce the deposition of condensed water in diesel. Background Art

[0002] Diesel engines are widely used in numerous applications, but their fuel tanks present several challenges. Fuel tanks typically require a vent valve to maintain internal pressure balance. However, when ambient temperature fluctuates, moisture in the air can easily condense inside the fuel tank.

[0003] In the prior art, for example, patent application number CN202111194756.0, titled "A Valve for a Fuel Tank Ventilation System of an Automobile," comprises an upper cover and a valve body. The upper cover is disposed on the top of the valve body and is provided with an oil leakage hole. A vent is disposed on one side of the upper cover, and a sealed space communicating with the vent is provided between the inner wall of the upper cover and the top. A first blocking portion extending toward the top is provided on the inner wall of the upper cover, the first blocking portion being used to impact the oil-gas mixture splashed from the oil leakage hole. A second blocking portion is provided on the top to prevent leaked oil from entering the vent. The top is an inverted conical structure, with the oil leakage hole located in the middle of the top. The first blocking portion comprises an arc-shaped plate, which is covered above the oil leakage hole. The present invention enables the valve to have an oil-gas separation function, thereby eliminating the need for a separate oil-gas separation mechanism in the ventilation system of the automobile fuel tank, thereby effectively saving space, avoiding the addition of components, and reducing costs and the complexity of the ventilation system layout.

[0004] The fuel inside the daily fuel tank currently used for diesel engines is connected to the external atmosphere. The air in the tank will form condensed water when the ambient temperature changes. When the condensed water reaches a certain amount, it will drip into the fuel, damaging the quality of the fuel. To address the above problem, a fuel tank vent valve is proposed that effectively reduces the deposition of condensed water in diesel. Summary of the Invention

[0005] The purpose of the present invention is to provide a fuel tank vent valve that effectively reduces the deposition of condensed water in diesel, so as to solve the problem proposed in the above background technology that during operation, the fuel inside the daily fuel tank equipped with the diesel engine is connected to the atmosphere of the external environment, and the air in the fuel tank will form condensed water under the change of ambient temperature. When the condensed water reaches a certain amount, it will drip into the fuel, thereby damaging the quality of the fuel.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a fuel tank vent valve that effectively reduces the deposition of condensed water in diesel, comprising a fuel tank, a connecting pipe fixedly connected to the top of the fuel tank, a vent valve fixedly connected to the top of the connecting pipe, a dryer, a one-way valve 1 and a one-way valve 2 are arranged inside the vent valve, one end of the connecting pipe is connected to the dryer, the input end of the one-way valve 2 is connected to the connecting pipe through a first connecting pipe, the input end of the one-way valve 1 is connected to a vent, the output end of the one-way valve 2 is connected to the vent through a second connecting pipe, the output end of the one-way valve 1 is connected to a third connecting pipe, the input end of the third connecting pipe is connected to the dryer The fuel tank is connected to the dryer, and an oil outlet, an oil return port and a refueling port are provided on the fuel tank. The side wall or top wall of the fuel tank above the highest liquid level of the fuel tank is connected to the vent valve through a connecting pipe. The vent valve includes a one-way valve 1 connected in series with the dryer, which is connected to the atmosphere and the inside of the fuel tank respectively, and another one-way valve 2 directly connects the fuel tank and the atmosphere. When the pressure inside the fuel tank is lower than the atmospheric pressure, the external air passes through the one-way valve 1 and the dryer into the fuel tank. When the pressure inside the fuel tank is higher than the atmospheric pressure, the air inside the fuel tank is directly discharged into the atmosphere through the one-way valve 2, thereby effectively avoiding the deposition of condensed water inside the fuel tank and ensuring the quality of the fuel. The vent valve is easy to install, easy to disassemble and easy to maintain.

[0007] Preferably, an oil outlet is provided at the bottom of one side of the fuel tank, and a gate valve is provided in the middle of the oil outlet, and a handle is provided on the gate valve. By arranging the gate valve on the fuel tank and cooperating with the handle, the fuel flow of the oil outlet can be accurately adjusted. When the equipment does not need fuel supply, such as when the equipment is shut down, closing the valve can completely prevent the fuel from flowing out of the fuel tank, avoiding the waste of fuel due to tank leakage or other unexpected situations. When repairing or maintaining the fuel system connected to the fuel tank, such as cleaning the fuel filter, replacing the fuel pump, etc., closing the valve of the oil outlet can isolate the fuel tank from other parts of the fuel system, thereby preventing fuel leakage during operation and ensuring the safety of maintenance personnel.

[0008] Preferably, a return oil port is provided on the top of one side of the fuel tank, a refueling port is provided on the top of the fuel tank, and a sealing cover is provided on the top of the refueling port. The sealing cover fits tightly against the refueling port to ensure that fuel will not leak from the refueling port even when the vehicle is moving vigorously. At the same time, the sealing cover acts as a barrier to prevent these foreign objects from entering the fuel tank and avoid damage to the fuel system, such as preventing foreign objects from entering and causing wear of the oil pump or blockage of the injector. When the injector does not need so much fuel, the excess fuel will flow back to the fuel tank through the return oil port, which can ensure that the oil pressure in the fuel system is maintained within a stable range, avoiding damage to the injector and other components due to excessive oil pressure.

[0009] Preferably, a sensor rod is installed through the top of the fuel tank, and the bottom end of the sensor rod extends to the inner bottom of the fuel tank. The sensor rod can monitor the liquid level in the fuel tank in real time and continuously. Whether the vehicle is driving or the equipment is operating, it can accurately reflect the remaining amount of fuel or other liquids in the fuel tank, and can accurately measure the liquid level changes to the millimeter level, allowing users to clearly understand the consumption of the liquid in the fuel tank. During the liquid filling process, the sensor rod can monitor the liquid level in real time. When the liquid level reaches the set upper limit, the filling operation can be stopped in time to avoid the occurrence of oil overflow. When refueling a car, if there is no feedback from the sensor rod, fuel overflow may occur due to a malfunction of the fuel gun or negligence of the operator. The sensor rod can effectively prevent this situation and ensure the safety of the refueling process.

[0010] Preferably, a sensor wire for information transmission is fixedly connected to the top of the sensor rod. The sensor wire can accurately transmit the fuel tank liquid level signal detected by the sensor rod to an external display device or control system. The sensor rod transmits the remaining fuel level signal in the tank to the fuel gauge on the instrument panel via the sensor wire, allowing the driver to intuitively understand the fuel level in the tank and reasonably plan refueling time and travel. This accurate signal transmission ensures the reliability of the displayed information and avoids misjudgment of the liquid level due to signal transmission errors.

[0011] Preferably, the bottom end of the sensing rod is connected to a sensor, which is arranged on the inner side of the fuel tank. The sensor can accurately measure the height of the liquid in the fuel tank and can provide highly accurate data in both static and dynamic environments.

[0012] Preferably, support blocks are symmetrically provided on the bottom of the oil tank, and the support blocks facilitate providing stable installation support for the oil tank and ensure stability.

[0013] Preferably, a lifting piece is fixedly installed in the middle of the surface of the oil tank, and a through hole is opened through the side of the lifting piece. The lifting piece facilitates the installation of the oil tank and provides auxiliary lifting functions during transportation, thereby improving the convenience of use.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] In the present invention, by providing a vent valve, when the diesel engine is in standby mode, the ambient temperature drops and the air pressure in the fuel tank is lower than the atmospheric pressure outside the fuel tank. When the diesel engine is running, the fuel stored in the fuel tank gradually decreases, and the air pressure in the fuel tank is lower than the atmospheric pressure outside the fuel tank. The air outside the fuel tank passes through the one-way valve and the dryer into the fuel tank to balance the air pressure inside and outside the fuel tank. At the same time, the air entering the fuel tank is dried. If the temperature change in the fuel tank causes the pressure in the fuel tank to increase, the air in the fuel tank is discharged into the atmosphere through another reverse one-way valve to balance the air pressure inside and outside the fuel tank. The vent valve that allows air circulation effectively avoids the deposition of condensed water inside the fuel tank, thereby ensuring the quality of the fuel. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a fuel tank assembly of a fuel tank vent valve for effectively reducing condensed water deposition in diesel fuel according to the present invention;

[0017] Figure 2 The present invention is a schematic structural diagram of a vent valve assembly of a fuel tank vent valve that effectively reduces the deposition of condensed water in diesel.

[0018] In the picture:

[0019] 1. Oil outlet; 2. Fuel tank; 3. Oil return port; 4. Refueling port; 5. Vent valve; 6. Vent; 7. Dryer; 8. One-way valve 1; 9. One-way valve 2; 10. Connecting pipe; 11. First connecting pipe; 12. Second connecting pipe; 13. Third connecting pipe; 14. Sensor; 15. Sensing wire; 16. Sensing rod. DETAILED DESCRIPTION

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0021] Example 1: Reference Figure 1-Figure 2As shown: A fuel tank vent valve that effectively reduces the deposition of condensed water in diesel, including a fuel tank 2, a connecting pipe 10 is fixedly connected to the top of the fuel tank 2, a vent valve 5 is fixedly connected to the top of the connecting pipe 10, a dryer 7, a one-way valve 8 and a one-way valve 9 are arranged inside the vent valve 5, one end of the connecting pipe 10 is connected to the dryer 7, the input end of the one-way valve 9 is connected to the connecting pipe 10 through a first connecting pipe 11, the input end of the one-way valve 8 is connected to the vent 6, the output end of the one-way valve 9 is connected to the vent 6 through a second connecting pipe 12, the output end of the one-way valve 8 is connected to the third connecting pipe 13, the input end of the third connecting pipe 13 is connected to the dryer 7, and the one-way valve 7 is connected to the fuel tank 2. It is provided with an oil outlet 1, an oil return port 3 and a refueling port 4, and the side wall or top wall of the oil tank above the highest liquid level of the oil tank 2 is connected to the vent valve 5 through a connecting pipe 10. The vent valve 5 includes a one-way valve 1 8 and a dryer 7 in series, which are connected to the atmosphere and the inside of the oil tank respectively. Another one-way valve 2 9 directly connects the oil tank and the atmosphere. When the pressure inside the oil tank is lower than the atmospheric pressure, the external air passes through the one-way valve 1 8 and the dryer 7 into the inside of the oil tank 2. When the pressure inside the oil tank 2 is higher than the atmospheric pressure, the air inside the oil tank 2 is directly discharged into the atmosphere through the one-way valve 2 9, thereby effectively avoiding the deposition of condensed water inside the oil tank and ensuring the quality of the fuel. The vent valve 5 is easy to install, easy to disassemble and easy to maintain.

[0022] like Figure 1 As shown, an oil outlet 1 is provided at the bottom of one side of the fuel tank 2, and a gate valve is provided in the middle of the oil outlet 1, and a handle is provided on the gate valve. By arranging the gate valve on the fuel tank 2 and cooperating with the handle, the fuel flow rate of the oil outlet can be accurately adjusted. When the equipment does not need fuel supply, such as when the equipment is shut down, closing the valve can completely prevent the fuel from flowing out of the fuel tank, avoiding the waste of fuel due to tank leakage or other unexpected situations. When repairing or maintaining the fuel system connected to the fuel tank, such as cleaning the fuel filter, replacing the fuel pump, etc., closing the valve of the oil outlet can isolate the fuel tank from other parts of the fuel system, thereby preventing fuel leakage during operation and ensuring the safety of maintenance personnel.

[0023] like Figure 1 As shown, a return oil port 3 is provided on the top of one side of the fuel tank 2, a refueling port 4 is provided on the top of the fuel tank 2, and a sealing cover is provided on the top of the refueling port 4. The sealing cover fits tightly against the refueling port 4 to ensure that the fuel will not leak from the refueling port 4 even when the vehicle is moving vigorously. At the same time, the sealing cover acts as a barrier to prevent these foreign objects from entering the fuel tank 2 and causing damage to the fuel system, such as preventing foreign objects from entering and causing wear of the oil pump or blockage of the injector. When the injector does not need so much fuel, the excess fuel will flow back to the fuel tank through the return oil port 3, which can ensure that the oil pressure in the fuel system is maintained within a stable range, avoiding damage to the injector and other components due to excessive oil pressure.

[0024] like Figure 1 As shown, a sensor rod 16 is installed through the top of the fuel tank 2, and the bottom end of the sensor rod 16 extends to the inner bottom of the fuel tank 2. The sensor rod 16 can monitor the liquid level in the fuel tank 2 in real time and continuously. Whether the vehicle is driving or the equipment is operating, it can accurately reflect the remaining amount of fuel or other liquids in the fuel tank 2, with liquid level changes accurate to the millimeter level, allowing the user to clearly understand the consumption of the liquid in the fuel tank 2. During the liquid filling process, the sensor rod 16 can monitor the liquid level in real time. When the liquid level reaches the set upper limit, the filling operation can be stopped in time to avoid oil spills. Without feedback from the sensor rod 16 when refueling a car, fuel spills may occur due to a malfunction of the fuel gun or operator negligence. The sensor rod 16 can effectively prevent this situation and ensure the safety of the refueling process.

[0025] like Figure 1 As shown, a sensor wire 15 for information transmission is fixedly connected to the top of the sensor rod 16. This wire accurately transmits the fuel tank level signal detected by the sensor rod 16 to an external display device or control system. The sensor rod 16 then transmits the remaining fuel level signal to the fuel gauge on the instrument panel via the sensor wire 15, allowing the driver to intuitively understand the fuel level in the tank and plan refueling times and trips accordingly. This accurate signal transmission ensures the reliability of the displayed information and avoids misjudgments of the fuel level due to signal transmission errors.

[0026] like Figure 1 As shown, the bottom end of the sensing rod 16 is connected to a sensor 14, which is disposed on the inner side of the fuel tank 2. The sensor 14 can accurately measure the height of the liquid in the fuel tank 2 and can provide highly accurate data in both static and dynamic environments.

[0027] like Figure 1 As shown, support blocks are symmetrically arranged at the bottom of the fuel tank 2, which facilitates providing stable installation support for the fuel tank 2 and ensures stability.

[0028] like Figure 1 As shown, a lifting piece is fixedly installed in the middle of the surface of the oil tank 2, and a through hole is opened through the side of the lifting piece. The lifting piece facilitates the installation of the oil tank 2 and provides auxiliary lifting functions during transportation, thereby improving the convenience of use.

[0029] In the present invention, when the fuel tank vent valve that effectively reduces the deposition of condensed water in diesel is used, first, an oil outlet 1, an oil return port 3 and a refueling port 4 are provided on the fuel tank 2, and the side wall or top wall of the fuel tank above the highest liquid level of the fuel tank 2 is connected to the vent valve 5 through a connecting pipe 10. The vent valve 5 includes a one-way valve 1 8 and a dryer 7 in series, which are connected to the atmosphere and the inside of the fuel tank respectively, and another one-way valve 2 9 directly connects the fuel tank and the atmosphere. When the pressure inside the fuel tank is lower than the atmospheric pressure, the external air passes through the one-way valve 1 8 and the dryer 7 into the interior of the fuel tank 2. When the pressure inside the fuel tank 2 is higher than the atmospheric pressure, the air inside the fuel tank 2 is directly discharged into the atmosphere through the one-way valve 2 9, thereby effectively avoiding the deposition of condensed water inside the fuel tank and ensuring the quality of the fuel.

[0030] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A fuel tank vent valve for effectively reducing condensed water deposition in diesel, comprising a fuel tank (2), characterized in that: The top of the oil tank (2) is fixedly connected to a connecting pipe (10), the top of the connecting pipe (10) is fixedly connected to a vent valve (5), a dryer (7), a one-way valve (8) and a one-way valve (9) are provided inside the vent valve (5), one end of the connecting pipe (10) is connected to the dryer (7), the input end of the one-way valve (9) is connected to the connecting pipe (10) through a first connecting pipe (11), the input end of the one-way valve (8) is connected to the vent (6), the output end of the one-way valve (9) is connected to the vent (6) through a second connecting pipe (12), the output end of the one-way valve (8) is connected to a third connecting pipe (13), and the input end of the third connecting pipe (13) is connected to the dryer (7).

2. The fuel tank vent valve for effectively reducing condensed water deposition in diesel according to claim 1, characterized in that: An oil outlet (1) is provided at the bottom of one side of the oil tank (2), a gate valve is provided in the middle of the oil outlet (1), and a handle is provided on the gate valve.

3. The fuel tank vent valve for effectively reducing condensed water deposition in diesel according to claim 1, characterized in that: An oil return port (3) is provided at the top of one side of the oil tank (2), a refueling port (4) is provided at the top of the oil tank (2), and a sealing cover is provided at the top of the refueling port (4).

4. The fuel tank vent valve for effectively reducing condensed water deposition in diesel according to claim 1, characterized in that: A sensing rod (16) is installed through the top of the oil tank (2), and the bottom end of the sensing rod (16) extends to the inner bottom of the oil tank (2).

5. The fuel tank vent valve for effectively reducing condensed water deposition in diesel according to claim 4, characterized in that: A sensing wire (15) for information transmission is fixedly connected to the top of the sensing rod (16).

6. The fuel tank vent valve for effectively reducing condensed water deposition in diesel according to claim 4, characterized in that: The bottom end of the sensing rod (16) is connected to a sensor (14), and the sensor (14) is arranged on the inner side of the oil tank (2).

7. The fuel tank vent valve for effectively reducing condensed water deposition in diesel according to claim 1, characterized in that: Support blocks are symmetrically arranged on the bottom of the oil tank (2).

8. The fuel tank vent valve for effectively reducing condensed water deposition in diesel fuel according to claim 1, characterized in that: A hanging piece is fixedly mounted on the middle of the surface of the oil tank (2), and a through hole is provided through the side surface of the hanging piece.

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