Combined fuel injection nozzle

Abstract

The utility model discloses a combined fuel injector, which relates to the technical field of fuel injectors, and comprises a fuel injector body, a mounting shell is mounted on the top of the fuel injector body, an oil inlet pipe is mounted on the top of the mounting shell, a filter assembly is mounted inside the oil inlet pipe, the filter assembly is used to filter the oil body containing impurities, the filter assembly comprises a mounting tube and a filter net, the mounting tube is mounted inside the oil inlet pipe, and the filter net is mounted on the inner side of the bottom end of the mounting tube. The filter net in the filter assembly of the utility model is mounted inside the oil inlet pipe through the mounting tube, the fuel enters through the mounting tube, and is filtered by the filter net, and then enters through the oil inlet pipe after filtering, thereby preventing the fuel with impurities from mixing into the interior of the fuel injector and affecting the use of the fuel injector.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injection nozzles, in particular to a combined fuel injection nozzle. Background Art

[0002] The fuel injector is a normally closed valve. When the electromagnetic coil is energized, suction is generated, the needle valve is sucked up, the spray hole is opened, and the fuel is sprayed out at high speed through the annular gap between the needle at the needle valve head and the spray hole, forming a mist, which is conducive to full combustion.

[0003] Patent document CN220487749U discloses a fuel injector. "The fuel injector in the patent document has a water inlet hole and hot water added thereto, so that when the electromagnetic coil is energized, the fluidity is better and it is more conducive to the operation of the fuel injector. However, when it is used, there is a lack of a filtering structure for the oil, which makes it difficult to filter the oil with impurities, resulting in impurities entering the interior of the fuel injector and affecting the use of the fuel injector. Utility Model Content

[0004] One purpose of the present application is to provide a combined fuel injector to solve the technical problem that the fuel injector proposed in the prior art lacks a filtering structure for the oil, is not convenient for filtering the oil with impurities, and causes the impurities to enter the interior of the fuel injector and affect the use of the fuel injector.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined fuel injector, comprising a fuel injector body, a mounting shell is installed on the top of the fuel injector body, an oil inlet pipe is installed on the top of the mounting shell, a filter assembly is installed inside the oil inlet pipe, the filter assembly is used to filter the oil containing impurities, the filter assembly comprises a mounting pipe and a filter screen, the mounting pipe is installed inside the oil inlet pipe, and the filter screen is installed on the inner side of the bottom end of the mounting pipe.

[0006] Preferably, a positioning opening is installed at the top of the mounting tube, and a positioning magnetic ring is installed at the bottom of the positioning opening.

[0007] Preferably, a connecting port is installed on the top of the oil inlet pipe, a connecting groove is opened on the inner side of the top of the connecting port, and the connecting groove is connected to the positioning port.

[0008] Preferably, the connection groove is symmetrically provided with mounting grooves, a positioning magnet is installed inside the mounting groove, and the positioning magnet is magnetically attracted to the positioning magnetic ring.

[0009] Preferably, a connector is installed on one side of the mounting shell.

[0010] Preferably, a connecting shell is installed at the bottom of the fuel injector body, and a fuel injection pipe is installed at the bottom of the connecting shell.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the oil inlet pipe is used to provide space for the fuel to enter the interior of the fuel injector. At the same time, the oil inlet pipe provides an installation position for the filter assembly. The filter in the filter assembly is installed inside the oil inlet pipe through the installation pipe. The fuel enters through the installation pipe and is filtered by the filter. After the filtration is completed, the fuel enters through the oil inlet pipe, thereby preventing the fuel with impurities from mixing into the interior of the fuel injector and affecting the use of the fuel injector.

[0013] 2. The mounting groove in the utility model is used to install the positioning magnet. When the positioning port is located in the connecting groove, the positioning magnetic ring installed at the bottom and the positioning magnet are attracted to each other by opposite sexes, so that the mounting tube is fixed inside the oil inlet pipe through the positioning port. When the filter needs to be taken out for cleaning, since the mounting tube is fixed by magnetism, it is very convenient to disassemble. You only need to apply pressure upwards on the mounting tube to take it out, which is convenient for disassembly and cleaning of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of the utility model;

[0015] Figure 2 This is a schematic diagram of the installation shell structure of the utility model;

[0016] Figure 3 For the utility model Figure 2 Schematic diagram of the structure at A in the middle;

[0017] Figure 4 This is a schematic diagram of the installation pipe structure of the utility model.

[0018] In the figure: 1. Injector body; 2. Connecting shell; 3. Injection pipe; 4. Mounting shell; 5. Connector; 6. Oil inlet pipe; 7. Connecting port; 8. Connecting slot; 9. Mounting slot; 10. Positioning magnet; 11. Mounting pipe; 12. Filter; 13. Positioning port; 14. Positioning magnetic ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1 , Figure 2 and Figure 4 , an embodiment provided by the utility model: a combined fuel injection nozzle;

[0023] The fuel injector comprises a fuel injector body 1 and a filter assembly. A mounting shell 4 is mounted on the top of the fuel injector body 1. An oil inlet pipe 6 is mounted on the top of the mounting shell 4. A filter assembly is mounted inside the oil inlet pipe 6. The filter assembly is used to filter the oil containing impurities. The filter assembly comprises a mounting pipe 11 and a filter screen 12. The mounting pipe 11 is mounted inside the oil inlet pipe 6. The filter screen 12 is mounted on the inner side of the bottom end of the mounting pipe 11. A positioning port 13 is mounted on the top end of the mounting pipe 11. A positioning magnetic ring 14 is mounted on the bottom of the positioning port 13.

[0024] The fuel injector body 1 is used to spray fuel at high speed, and the mounting shell 4 provides a mounting position for the fuel inlet pipe 6 at the top. The fuel inlet pipe 6 is used to provide space for the fuel to enter the interior of the fuel injector. At the same time, the fuel inlet pipe 6 provides a mounting position for the filter assembly. The filter screen 12 in the filter assembly is installed inside the fuel inlet pipe 6 through the mounting tube 11. The fuel enters through the mounting tube 11 and is filtered under the action of the filter screen 12. After the filtering is completed, the fuel enters through the fuel inlet pipe 6, thereby preventing the fuel with impurities from mixing into the interior of the fuel injector and affecting the use of the fuel injector. A positioning magnetic ring 14 is installed on the top of the mounting tube 11 through the positioning port 13. The positioning magnetic ring 14 provides a function for positioning the mounting tube 11.

[0025] See also Figure 1 , Figure 2and Figure 3 , an embodiment provided by the utility model: a combined fuel injection nozzle;

[0026] It includes a connection port 7 and a connector 5. The top of the oil inlet pipe 6 is equipped with the connection port 7. The top inner side of the connection port 7 is provided with a connection groove 8, and the connection groove 8 is connected to the positioning port 13. The connection groove 8 is symmetrically provided with a mounting groove 9. The mounting groove 9 is provided with a positioning magnet 10, and the positioning magnet 10 is magnetically attracted to the positioning magnetic ring 14. The connector 5 is installed on one side of the mounting shell 4. The bottom of the fuel injector body 1 is equipped with a connection shell 2, and the bottom of the connection shell 2 is equipped with a fuel injection pipe 3.

[0027] When the mounting tube 11 is inside the oil inlet pipe 6, the positioning port 13 is located inside the connecting groove 8, and the connecting groove 8 provides a position for the installation of the positioning port 13. The mounting groove 9 is used to install the positioning magnet 10. When the positioning port 13 is located in the connecting groove 8, the positioning magnetic ring 14 installed at the bottom is attracted to the positioning magnet 10 by opposite charges, thereby fixing the mounting tube 11 inside the oil inlet pipe 6 through the positioning port 13. When the filter 12 needs to be taken out for cleaning, since the mounting tube 11 is fixed by magnetism, it is very convenient to disassemble. It is only necessary to apply pressure upwards on the mounting tube 11 to take it out, so as to facilitate the disassembly and cleaning of the filter 12. The mounting shell 4 provides a position for the installation of the connector 5, and the connector 5 is used for powering on. The connecting shell 2 provides a position for the installation of the injection pipe 3, and the bottom end of the injection pipe 3 is used for oil spraying.

[0028] Working principle: Before using the combined fuel injector, you should first check whether there are any problems that affect the use of the combined fuel injector. First, install the combined fuel injector for use, connect the connector 5 to the circuit, and connect the oil inlet pipe 6 to the oil delivery pipe, so that the fuel can enter the interior of the fuel injector through the oil inlet pipe 6. When the fuel enters, it will first be filtered through the filter 12 to ensure that the fuel entering the fuel injector does not contain impurities. By removing the installation tube 11, the filter 12 can be disassembled and cleaned.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A combined fuel injection nozzle, comprising a fuel injection nozzle body (1), characterized in that: A mounting shell (4) is mounted on the top of the fuel injector body (1), an oil inlet pipe (6) is mounted on the top of the mounting shell (4), a filter assembly is mounted inside the oil inlet pipe (6), the filter assembly is used to filter oil containing impurities, the filter assembly comprises a mounting pipe (11) and a filter screen (12), the mounting pipe (11) is mounted inside the oil inlet pipe (6), and the filter screen (12) is mounted on the inner side of the bottom end of the mounting pipe (11).

2. A combined fuel injection nozzle according to claim 1, characterized in that: A positioning opening (13) is installed at the top end of the installation tube (11), and a positioning magnetic ring (14) is installed at the bottom end of the positioning opening (13).

3. The combined fuel injection nozzle according to claim 1, characterized in that: A connecting port (7) is installed at the top of the oil inlet pipe (6), a connecting groove (8) is opened on the inner side of the top of the connecting port (7), and the connecting groove (8) is connected to the positioning port (13).

4. A combined fuel injection nozzle according to claim 3, characterized in that: The connection groove (8) is symmetrically provided with a mounting groove (9), a positioning magnet (10) is installed inside the mounting groove (9), and the positioning magnet (10) and the positioning magnetic ring (14) are magnetically attracted to each other.

5. A combined fuel injection nozzle according to claim 4, characterized in that: A connector (5) is installed on one side of the installation shell (4).

6. The combined fuel injection nozzle according to claim 1, characterized in that: A connecting shell (2) is installed at the bottom of the fuel injection nozzle body (1), and a fuel injection pipe (3) is installed at the bottom of the connecting shell (2).

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