Engine oil nozzle valve sealing ring

Abstract

The utility model discloses an engine oil nozzle valve sealing ring, which relates to the technical field of valve sealing rings, and comprises a sealing sleeve with one open end, a notch arranged at the closed end of the sealing sleeve, a sealing lip fixedly sleeved at the open end of the sealing sleeve, and a diameter expanding mechanism which comprises a push-pull plate, a push-pull rod and a plastic plate, the plastic plate is provided with a pneumatic component used for acting on the multiple push-pull rods to move synchronously. Through the arrangement of the diameter expanding mechanism, when the sealing sleeve needs to be sleeved on the outer wall of the oil nozzle, air is sucked into the inner cavity of the air conveying seat in the pneumatic component in advance, the internal pressure of the air conveying seat and the pressure of the sliding seats are reduced, and then the pistons and the push-pull rods in the sliding seats integrally and synchronously slide away from the sealing lip; and the corresponding push-pull plates are respectively pulled, so that the plurality of push-pull plates pull the opening of the sealing sleeve at a plurality of parts, the caliber of the sealing sleeve is rapidly enlarged instead of manual work, and the sealing sleeve can be conveniently sleeved on the oil nozzle.

Description

Technical Field

[0001] The utility model relates to the technical field of valve sealing rings, in particular to a sealing ring for a valve of an engine fuel injection nozzle. Background Art

[0002] Engine valve seals are widely used in engine systems. Valve seals are key components of engine systems. The performance of the seals will affect the operating stability and safety of the system. Its main function is that when the driver steps on the accelerator pedal, the fuel is under pressure, the valve seal cut opens, the fuel enters the combustion chamber and burns, and the engine generates power. When the driver releases the accelerator pedal, the fuel pressure disappears, the valve seal cut closes, the fuel supply stops, and the seal starts the sealing function. If the seal of this product fails, the safety of the engine system will be greatly affected.

[0003] However, in practice, the caliber of the valve sealing ring in the prior art is fixed and has a high degree of fit with the parts. Therefore, when the valve sealing ring is installed on the fuel injector, it is often necessary to manually pull the opening of the sealing ring in advance to expand the opening of the sealing ring so that the sealing ring can be installed on the fuel injector. This operation is often time-consuming and laborious, which seriously affects the efficiency of manual operation and reduces practicality. Utility Model Content

[0004] In order to solve the above technical problems, a valve sealing ring for an engine fuel injector is provided, which solves the problem in the prior art that it is inconvenient to fit the valve sealing ring onto the fuel injector.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: an engine fuel injection nozzle valve sealing ring, comprising a sealing sleeve with an open end, a cutout opened on the closed end of the sealing sleeve, and a sealing lip fixedly sleeved on the open end of the sealing sleeve, and also comprising a diameter expansion mechanism for facilitating the sleeve to be sleeved on the fuel injection nozzle;

[0006] The expansion mechanism includes a plurality of push-pull plates fixed around the circumference of the sealing lip, a push-pull rod fixed vertically on the side of the push-pull plate away from the sealing lip, and a plastic plate fixed in a circular shape on the top surface of the sealing lip, and the plastic plate is provided with a pneumatic component for causing the plurality of push-pull rods to move synchronously.

[0007] Preferably, the pneumatic component includes an air delivery seat with a circular ring shape and a cavity inside fixed at the edge of the top surface of the plastic plate, a plurality of slide seats connected and fixed on the inner wall of the plastic plate, and a piston slidably arranged on the inner side of the slide seat, and the end of the push-pull rod penetrates into the slide seat and is fixedly connected to the piston.

[0008] Preferably, a gas injection nozzle is connected and fixed on the outer periphery of the gas delivery seat, and a one-way valve is built into the gas injection nozzle.

[0009] Preferably, a gas outlet nozzle is connected and fixed to the top of the gas delivery seat, and a first sealing plug is inserted into the open end of the gas outlet nozzle.

[0010] Preferably, a second sealing plug is inserted into the open end of the gas injection nozzle.

[0011] Compared with the prior art, the utility model has the following advantages: through the setting of the diameter expansion mechanism, when the sealing sleeve needs to be fitted onto the outer wall of the fuel injector, gas is sucked into the inner cavity of the gas delivery seat in the pneumatic component in advance to reduce the internal pressure of the gas delivery seat and the supply slide seat, and then the pistons and push-pull rods in the supply slide seats slide away from the sealing lips synchronously as a whole, and pull the corresponding push-pull plates respectively, so that the several push-pull plates pull the opening of the sealing sleeve at multiple locations, instead of manually quickly expanding the diameter of the sealing sleeve, making it easier for the sealing sleeve to be fitted onto the fuel injector. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the bottom structure of the utility model;

[0014] Figure 3 This is a schematic diagram of the internal structure of the utility model;

[0015] Figure 4 For this utility model Figure 3 Schematic diagram of the structure at point A in the middle.

[0016] The numbers in the figure are:

[0017] 1. Sealing sleeve; 2. Incision; 3. Sealing lip; 4. Plastic plate; 5. Air delivery seat; 6. Sliding seat; 7. Push-pull plate; 8. Piston; 9. Push-pull rod; 10. Air injection nozzle; 11. One-way valve; 12. Air outlet nozzle; 13. First sealing plug; 14. Second sealing plug. DETAILED DESCRIPTION

[0018] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0019] Reference Figure 1-4 As shown, the sealing ring of the engine fuel injection nozzle valve comprises a sealing sleeve 1 with an open end, a cutout 2 opened on the closed end of the sealing sleeve 1, and a sealing lip 3 fixedly sleeved on the open end of the sealing sleeve 1;

[0020] When the driver steps on the accelerator pedal, under the action of fuel pressure, cutout 2 opens, fuel enters the combustion chamber and burns, and the engine generates power. When the driver releases the accelerator pedal, the fuel pressure disappears, cutout 2 closes, the fuel supply stops, and the sealing ring starts the sealing function.

[0021] However, from a practical point of view, the diameter of the sealing sleeve 1 is fixed and the degree of fit with the parts is high. When the sealing sleeve 1 is put on the fuel injector, it is often necessary to manually pull the opening of the sealing sleeve 1 in advance to expand the opening of the sealing sleeve 1 so as to facilitate the installation of the sealing sleeve 1 on the fuel injector. This operation is often time-consuming and laborious, which seriously affects the efficiency of manual operation and reduces practicality.

[0022] For this purpose, refer to Figure 1-4 As shown, it is worth noting that it also includes a diameter expansion mechanism for facilitating the sealing sleeve 1 to be mounted on the fuel injection nozzle;

[0023] The diameter expansion mechanism includes a plurality of push-pull plates 7 fixed around the circumference of the sealing lip 3, a push-pull rod 9 vertically fixed on the side of the push-pull plate 7 away from the sealing lip 3, and a plastic plate 4 fixed in an annular shape on the top surface of the sealing lip 3, and a pneumatic component for causing the plurality of push-pull rods 9 to move synchronously is arranged on the plastic plate 4;

[0024] The pneumatic component includes a circular ring-shaped gas delivery seat 5 with a cavity inside fixed at the edge of the top surface of the plastic plate 4, a plurality of supply slide seats 6 connected and fixed on the inner wall of the plastic plate 4, and a piston 8 slidably arranged inside the supply slide seat 6, and the end of the push-pull rod 9 penetrates into the supply slide seat 6 and is fixedly connected to the piston 8;

[0025] By setting the diameter expansion mechanism, when the sealing sleeve 1 needs to be fitted onto the outer wall of the fuel injector, gas is pumped into the inner cavity of the gas delivery seat 5 in the pneumatic component in advance to reduce the internal pressure of the gas delivery seat 5 and the supply slide seat 6, and then the pistons 8 and push-pull rods 9 in the supply slide seats 6 slide away from the sealing lip 3 as a whole and pull the corresponding push-pull plates 7 respectively. In this way, the push-pull plates 7 pull the opening of the sealing sleeve 1 at multiple locations, instead of manually quickly expanding the diameter of the sealing sleeve 1, so as to facilitate the fitting of the sealing sleeve 1 onto the fuel injector.

[0026] Further, refer to Figure 4 As shown, it is worth noting that a gas injection nozzle 10 is connected and fixed on the outer periphery of the gas delivery seat 5, and a one-way valve 11 is built into the gas injection nozzle 10;

[0027] The gas injection nozzle 10 is connected to an air pump via a hose, so that the air pump can continuously draw gas from the inner cavity of the gas delivery seat 5 and the supply slide seat 6 to reduce the internal pressure of the supply slide seat 6 and the gas delivery seat 5. The one-way valve 11 can be used to make the gas flow unidirectionally inside the one-way valve 11 to ensure the stability of the airflow.

[0028] Further, refer to Figure 4As shown, it is worth noting that a gas outlet nozzle 12 is connected and fixed to the top of the gas delivery seat 5, and a first sealing plug 13 is inserted into the open end of the gas outlet nozzle 12;

[0029] After the sealing sleeve 1 is fitted onto the fuel injector, the first sealing plug 13 is pulled out from the inside of the air outlet nozzle 12, thereby releasing the sealing of the air delivery seat 5 and the supply slide seat 6. External air can then quickly enter the air delivery seat 5 and the supply slide seat 6 through the air outlet nozzle 12, so that the pressure inside and outside the air delivery seat 5 and the supply slide seat 6 is constant. The piston 8 can then slide in the opposite direction under the pressure change and use the push-pull rod 9 to reset the push-pull plate 7, so that the sealing sleeve 1 is open and restored to its original state.

[0030] Further, refer to Figure 4 As shown, it is worth noting that a second sealing plug 14 is inserted into the open end of the gas injection nozzle 10;

[0031] By setting the second sealing plug 14, the gas injection nozzle 10 can be effectively closed to ensure the sealing inside the gas injection nozzle 10, so as to prevent the gas injection nozzle 10 from being directly exposed to the air environment when idle, which may easily cause a large amount of dust and impurities to enter, causing blockage inside the gas injection nozzle 10 and affecting the use effect.

[0032] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sealing ring for an engine fuel injection nozzle valve, comprising a sealing sleeve (1) with one end being open, a notch (2) provided on the closed end of the sealing sleeve (1), and a sealing lip (3) fixedly sleeved on the open end of the sealing sleeve (1), characterized in that: It also includes a diameter expansion mechanism for facilitating the sealing sleeve (1) to be fitted onto the fuel injection nozzle; The diameter expansion mechanism comprises a plurality of push-pull plates (7) fixed around the circumference of the sealing lip (3), a push-pull rod (9) fixed vertically on a side of the push-pull plate (7) away from the sealing lip (3), and a plastic plate (4) fixed in an annular shape on the top surface of the sealing lip (3), wherein the plastic plate (4) is provided with a pneumatic component for causing the plurality of push-pull rods (9) to move synchronously.

2. The engine fuel injection nozzle valve sealing ring according to claim 1, characterized in that: The pneumatic component comprises a gas delivery seat (5) in the shape of a ring with a hollow interior fixed at the edge of the top surface of the plastic plate (4), a plurality of supply slide seats (6) connected and fixed on the inner wall of the plastic plate (4), and a piston (8) slidably arranged inside the supply slide seat (6), and the end of the push-pull rod (9) penetrates into the supply slide seat (6) and is fixedly connected to the piston (8).

3. The engine fuel injection nozzle valve sealing ring according to claim 2, characterized in that: A gas injection nozzle (10) is connected and fixed on the outer periphery of the gas delivery seat (5), and a one-way valve (11) is built into the gas injection nozzle (10).

4. The engine fuel injection nozzle valve sealing ring according to claim 3, characterized in that: The top of the gas delivery seat (5) is connected and fixed with a gas outlet nozzle (12), and the open end of the gas outlet nozzle (12) is inserted with a first sealing plug (13).

5. The engine fuel injection nozzle valve sealing ring according to claim 4, characterized in that: A second sealing plug (14) is inserted into the open end of the gas injection nozzle (10).

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