Marine diesel injector

Abstract

The utility model discloses an oil injector of a marine diesel engine. An injector body; the oil inlet is formed in one end of the oil injector body; the oil injection opening is formed in the other end of the oil injector body; the cavity is formed in the oil sprayer body and communicates with the oil spraying opening; the connecting pipeline is arranged in the oil sprayer body; the adjusting block is arranged in the oil spraying opening; the adjusting rod is arranged in the cavity, one end of the adjusting rod is fixedly connected with one end face of the adjusting block, and the other end of the adjusting rod penetrates through the oil sprayer body; the internal thread sleeve is rotationally mounted on the outer surface of the oil sprayer body; and the rotating block is arranged in the inner threaded sleeve, one end face of the rotating block is fixedly connected with the end, away from the adjusting block, of the adjusting rod, and under the action of the adjusting block, fuel oil in the cavity can be blocked and can be sprayed out from a gap between the adjusting block and the oil spraying opening, so that the fuel oil can be uniformly sprayed out, and combustion of the fuel oil is more sufficient.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injectors, in particular to a fuel injector for a marine diesel engine. Background Art

[0002] In the manufacturing industry of automotive parts, the injector body is a very common simple part that can better control the oil volume and injection action. The injector is a precision device with very high processing accuracy, which requires a large dynamic flow range, strong anti-clogging and anti-pollution capabilities, and good atomization performance. The injector receives the injection pulse signal sent by the ECU to accurately control the fuel injection amount.

[0003] For example, in the utility model patent with publication number CN212054957U, the side walls on both sides of the tube body are respectively provided with an oil inlet and an oil outlet, the oil inlet and the oil outlet are commonly connected with a connecting channel, the upper side wall of the tube body is provided with an oil injection port, and the lower end of the oil injection port is provided with a first channel, and the lower end of the first channel is connected to a second channel.

[0004] However, the fuel sprayed out from the fuel injection port of the device is still in a columnar state, and the fuel cannot be sprayed out completely and evenly, which is easy to affect the combustion of the fuel. Utility Model Content

[0005] In order to solve the above problems, that is, to solve the problems raised by the above background technology, the utility model proposes a marine diesel engine injector, comprising:

[0006] Injector body;

[0007] an oil inlet formed at one end of the injector body;

[0008] a fuel injection port formed at the other end of the fuel injector body;

[0009] a cavity formed in the fuel injector body and communicated with the fuel injection port;

[0010] A connecting pipeline is provided in the injector body and is used to connect the oil inlet and the cavity;

[0011] A regulating block, arranged in the oil injection port;

[0012] An adjusting rod is disposed in the cavity, one end of which is fixedly connected to one end surface of the adjusting block, and the other end of which passes through the injector body;

[0013] An internal threaded sleeve, rotatably mounted on the outer surface of the injector body;

[0014] The rotating block is arranged in the internal thread sleeve, and one end surface of the rotating block is fixedly connected to an end of the adjusting rod away from the adjusting block.

[0015] Preferably, the connecting pipeline includes:

[0016] an annular cavity formed in the injector body;

[0017] A pair of channels are formed in the injector body, one end of each channel is connected to the annular cavity, and the other end of each channel is connected to the cavity;

[0018] The compression chamber has one end connected to the oil inlet and the other end connected to the annular cavity.

[0019] Preferably, an annular groove is formed in the injector body and on the outside of the adjusting rod, a sealing ring is arranged in the annular groove, and the inner wall surface of the sealing ring contacts the outer surface of the adjusting rod.

[0020] Preferably, a limiting block is fixedly mounted on the outer surface of the adjusting rod, and a limiting groove used in conjunction with the limiting block is formed in the injector body.

[0021] The beneficial technical effects of the utility model are as follows: under the action of the regulating block, the fuel in the cavity can be blocked so that it can be sprayed out from the gap between the regulating block and the fuel injection port, so that the fuel can be sprayed out evenly and the fuel can be burned more fully;

[0022] At the same time, under the action of the internal threaded sleeve, the rotating block and the adjusting rod, the distance between the outer wall of the adjusting block and the inner wall of the fuel injection port can be adjusted, which is convenient for adjusting the fuel injection amount and brings convenience to people. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the front cross-sectional structure of the utility model is shown.

[0024] Figure numerals 1, injector body, 2, oil inlet, 3, injection port, 4, cavity, 5, adjusting block, 6, adjusting rod, 7, internal threaded sleeve, 8, rotating block, 9, annular cavity, 10, channel, 11, compression chamber, 12, annular groove, 13, sealing ring, 14, limit block, 15, limit groove. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0026] The utility model provides a fuel injector for a marine diesel engine, comprising:

[0027] Injector body 1;

[0028] A fuel inlet 2 is formed at one end of the fuel injector body 1;

[0029] The fuel inlet 2 can facilitate external fuel to enter the injector body 1;

[0030] A fuel injection port 3 is formed at the other end of the fuel injector body 1;

[0031] The fuel injection port 3 can spray the fuel in the fuel injector body 1;

[0032] A cavity 4 is formed in the injector body 1 and communicated with the injection port 3;

[0033] A connecting pipeline is provided in the injector body 1 and is used to connect the oil inlet 2 and the cavity 4;

[0034] The regulating block 5 is arranged in the fuel injection port 3;

[0035] The regulating rod 6 is disposed in the cavity 4, and one end of the regulating rod is fixedly connected to one end surface of the regulating block 4, and the other end of the regulating rod passes through the injector body 1;

[0036] An internal threaded sleeve 7 is rotatably mounted on the outer surface of the injector body 1;

[0037] The rotating block 8 is disposed in the internal threaded sleeve 7, and one end surface of the rotating block 8 is fixedly connected to the end of the adjusting rod 6 away from the adjusting block 5;

[0038] The rotating block 8 is threadedly connected to the internal threaded sleeve 7. The staff can drive the rotating block 8 to move by rotating the internal threaded sleeve 7, and can drive the adjusting rod 6 and the adjusting block 5 to move at the same time, so as to adjust the distance between the outer wall of the adjusting block 5 and the inner wall of the fuel injection port 3, so that the fuel sprayed from the fuel injection port 3 can be more uniform.

[0039] Specifically, the connecting pipeline includes:

[0040] an annular cavity 9 formed in the injector body 1;

[0041] A pair of channels 10 are formed in the injector body 1, and one end of each channel is connected to the annular cavity 9, and the other end of each channel is connected to the cavity 4;

[0042] The compression chamber 11 is connected to the oil inlet 2 at one end and to the annular cavity 9 at the other end;

[0043] The fuel can enter the compression chamber 11 from the oil inlet 2, and the compression chamber 11 compresses the fuel, then transports it to the annular cavity 9, and then enters the cavity 4 through the channel 10. At this time, the fuel can be evenly sprayed out from the gap between the outer wall of the regulating block 5 and the inner wall of the injection port 3.

[0044] Specifically, an annular groove 12 is formed inside the injector body 1 and outside the adjusting rod 6, and a sealing ring 13 is provided inside the annular groove 12, and the inner wall surface of the sealing ring 13 contacts the outer surface of the adjusting rod 6;

[0045] The sealing ring 13 can provide sealing to prevent fuel leakage.

[0046] Specifically, a limit block 14 is fixedly mounted on the outer surface of the adjustment rod 6, and a limit groove 15 used in conjunction with the limit block 14 is formed in the injector body 1;

[0047] The limiting block 14 is slidably connected to the limiting groove 15, and can limit the position of the adjusting rod 6 so that it remains stable when moving.

[0048] Working principle: First, external fuel can enter the injector body 1 through the fuel inlet 2. At this time, the fuel flows into the compression chamber 11 and is compressed by the compression chamber 11. After compression, the fuel enters the annular cavity 9 and then enters the cavity 4 through a pair of channels 10. At this time, the fuel can be evenly sprayed out from the gap between the outer wall of the adjusting block 5 and the inner wall of the injection port 3. When it is necessary to adjust the amount of fuel sprayed, the staff rotates the internal threaded sleeve 7 to drive the rotating block 8 to move. The movement of the rotating block 8 can drive the adjusting rod 6 to move, so that it drives the adjusting block 5 to move at the same time. The distance between the outer wall surface of the adjusting block 5 and the inner wall surface of the injection port 3 can be adjusted to achieve the purpose of controlling the injection amount, which brings convenience to people.

[0049] Although the present invention has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features mentioned in the various embodiments may 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.

[0050] In the description of the present invention, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0051] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0052] The term "comprise" or any other similar term is intended to cover a non-exclusive inclusion, such that a process, article, or apparatus / device that includes a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, article, or apparatus / device.

[0053] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, 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 fall within the protection scope of the present invention.

Claims

1. A marine diesel engine injector, characterized in that: include; Injector body (1); An oil inlet (2) is formed at one end of the injector body (1); A fuel injection port (3) formed at the other end of the fuel injector body (1); A cavity (4) is formed in the fuel injector body (1) and is in communication with the fuel injection port (3); A connecting pipeline is arranged in the fuel injector body (1) and is used to connect the fuel inlet (2) and the cavity (4); A regulating block (5) is arranged in the oil injection port (3); An adjusting rod (6) is disposed in the cavity (4), one end of which is fixedly connected to an end surface of the adjusting block (5), and the other end of which passes through the injector body (1); An internal threaded sleeve (7) rotatably mounted on the outer surface of the injector body (1); The rotating block (8) is arranged in the internal threaded sleeve (7), and one end surface is fixedly connected to an end of the adjusting rod (6) away from the adjusting block (5).

2. A marine diesel engine injector according to claim 1, characterized in that: The connecting pipeline comprises: an annular cavity (9) formed in the injector body (1); A pair of channels (10) are formed in the injector body (1), and one end of each channel is connected to the annular cavity (9), and the other end of each channel is connected to the cavity (4); The compression chamber (11) has one end connected to the oil inlet (2) and the other end connected to the annular cavity (9).

3. A marine diesel engine injector according to claim 1, characterized in that: An annular groove (12) is formed inside the injector body (1) and outside the regulating rod (6). A sealing ring (13) is provided inside the annular groove (12). The inner wall surface of the sealing ring (13) contacts the outer surface of the regulating rod (6).

4. A marine diesel engine injector according to claim 1, characterized in that: A limit block (14) is fixedly mounted on the outer surface of the regulating rod (6), and a limit groove (15) for use with the limit block (14) is formed in the fuel injector body (1).

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