Continuous injection type oil injector

Abstract

The utility model relates to the technical field of oil injectors, and discloses a continuous injection type oil injector which comprises an oil injector shell, a connecting protection ring is fixedly installed on the top of the oil injector shell, and an installation sleeve is fixedly installed on the top of the connecting protection ring. And the filtering and spraying assembly is arranged in the oil sprayer shell and the mounting sleeve. According to the fuel injector, the guide block, the fuel injector cavity, the oil liquid pushing rod and the spring are arranged, the oil liquid pushing rod is kept at the stable initial position under the action of the spring, when a fuel injection signal is received, fuel oil can be quickly and accurately pushed to the oil liquid output channel, the fuel oil injection accuracy is ensured, and the fuel injector is more stable and reliable during continuous use; by arranging the first oil seal gasket and the second oil seal gasket, leakage of fuel oil is effectively prevented, the sealing performance of the oil injector is improved, and the effect of improving stability and reliability of connection oil injection is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel injectors, in particular to a continuous injection type fuel injector. Background Art

[0002] The injector is a precision device with very high processing accuracy. It is required to have 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 and accurately controls the fuel injection amount. The spray characteristics of the injector include atomization particle size, oil mist distribution, oil beam direction, range and diffusion cone angle, etc. These characteristics should meet the requirements of the diesel engine combustion system to achieve perfect mixture formation and combustion, and obtain higher power and thermal efficiency.

[0003] During a long operation cycle, the pump hole of the existing continuous injection fuel injector will gradually wear out. This wear phenomenon directly affects the precise limiting ability of the pump rod, which in turn causes the pump rod to operate poorly during continuous pumping operation, specifically manifested as a jamming phenomenon. Such problems ultimately lead to instability and unevenness in the amount of fuel injected by the injector, affecting the accuracy of fuel injection and the overall performance of the system. Therefore, it is necessary to design a continuous injection fuel injector. Utility Model Content

[0004] The purpose of the utility model is to provide a continuous injection type fuel injector to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a continuous jet injector, comprising an injector housing, a connecting protection ring is fixedly installed on the top of the injector housing to enhance structural stability and provide additional protection, a mounting sleeve is fixedly installed on the top of the connecting protection ring to facilitate quick connection with other components; a filter injection assembly, the filter injection assembly is arranged inside the injector housing and inside the mounting sleeve; the filter injection assembly includes: a filtering part, the filtering part is arranged inside the mounting sleeve; an injection part, the injection part is arranged inside the injector housing, and the injection part is located below the filtering part.

[0006] Preferably, the filtering part includes: a circulation groove, which is opened at the top of the mounting sleeve; a mounting slot is provided on the outside of the circulation groove, and the mounting slot is opened at the top of the mounting sleeve, and a mounting filter cartridge is provided above the mounting slot, and the mounting filter cartridge extends to the interior of the circulation groove.

[0007] Preferably, filter holes are equidistantly arranged on the circumference of the outer wall of the installation filter cartridge, a circular clamping block is fixedly mounted on the bottom of the installation filter cartridge, and the circular clamping block is clamped and connected to the installation clamping groove.

[0008] By setting filtering holes, impurities are effectively intercepted, and the fuel is preliminarily filtered, allowing the pure fuel to continue to move forward.

[0009] By setting installation slots and circular blocks, the stability of installation is achieved, and subsequent maintenance and replacement are facilitated.

[0010] Preferably, the fuel injection part includes: a guide block fixedly installed on the inner wall of the fuel injector housing; a fuel injector cavity opened inside the fuel injector housing; a hydraulic fluid output channel provided below the fuel injector cavity; a guide hole opened at the top of the guide block, and a hydraulic fluid push rod arranged inside the fuel injector cavity.

[0011] By setting a guide block, a stable movement track is provided for the hydraulic fluid push rod.

[0012] Preferably, a first oil seal washer is arranged below the guide block, a spring is arranged below the first oil seal washer, and the spring is located on the outer wall of the hydraulic fluid push rod.

[0013] By setting a spring, a necessary restoring force is provided to make the injection action accurate.

[0014] Preferably, a fixing collar is arranged below the hydraulic fluid output channel, and the fixing collar is fixedly installed at the bottom of the fuel injector housing, and a second oil seal washer is arranged below the fixing collar.

[0015] Preferably, a needle valve is communicated and arranged below the hydraulic fluid output channel, and an injection nozzle is opened at the bottom of the needle valve.

[0016] The present utility model provides a continuous injection type fuel injector. It has the following beneficial effects:

[0017] (1). By setting a flow groove, an installation filter cartridge, and filtering holes, the fuel entering the system is filtered, effectively removing impurities and particulate matters in the fuel, ensuring the purity of the fuel entering the fuel injector cavity, thereby reducing engine wear and performance degradation caused by unclean fuel, and achieving the effect of extending the service life of the engine.

[0018] (2). By setting a guide block, a fuel injector cavity, a hydraulic fluid push rod, and a spring, the hydraulic fluid push rod maintains a stable initial position under the action of the spring. When receiving a fuel injection signal, it can quickly and accurately push the fuel to the hydraulic fluid output channel, ensuring the accuracy of fuel injection, and being more stable and reliable during continuous use. Further, by setting a first oil seal washer and a second oil seal washer, fuel leakage is effectively prevented, the sealing performance of the fuel injector is improved, and the effect of improving the stability and reliability of fuel injection connection is achieved. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0020] Figure 2 is a sectional view of the structure of a continuous injection type fuel injector of the present utility model;

[0021] Figure 3 is an internal view of the structure of a continuous injection type fuel injector of the present utility model;

[0022] Figure 4 is a top view of the structure of the filter part of a continuous injection type fuel injector of the present utility model.

[0023] In the figure: 1 fuel injector housing, 2 connection protection ring, 3 mounting sleeve, 4 filter injection assembly, 41 filter part, 411 flow channel, 412 mounting slot, 413 mounting filter cartridge, 414 filter hole, 415 circular clamping block, 42 injection part, 421 guide block, 422 guide hole, 423 fuel injector cavity, 424 oil liquid push rod, 425 oil seal washer one, 426 spring, 427 oil liquid output channel, 428 fixed collar, 429 oil seal washer two, 4210 needle valve, 4211 fuel injection nozzle. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model and should not be construed as a limitation to the present utility model.

[0026] Embodiment 1

[0027] A preferred embodiment of a continuous injection type fuel injector provided by the present utility model is as follows Figures 1-4As shown: A continuous injection fuel injector, including an injector housing 1, a connection protection ring 2 is fixedly installed at the top of the injector housing 1 to enhance the structural stability and provide additional protection. An installation sleeve 3 is fixedly installed at the top of the connection protection ring 2 to facilitate quick connection with other components; a filtering and injection assembly 4, the filtering and injection assembly 4 is arranged inside the injector housing 1 and inside the installation sleeve 3; the filtering and injection assembly 4 includes: a filtering part 41, the filtering part 41 is arranged inside the installation sleeve 3; an injection part 42, the injection part 42 is arranged inside the injector housing 1, and the injection part 42 is located below the filtering part 41.

[0028] The filtering part 41 includes: a flow-through groove 411, the flow-through groove 411 is opened at the top of the installation sleeve 3; an installation card slot 412 is arranged outside the flow-through groove 411, and the installation card slot 412 is opened at the top of the installation sleeve 3. An installation filter cylinder 413 is arranged above the installation card slot 412, and the installation filter cylinder 413 extends into the flow-through groove 411.

[0029] The outer wall circumference of the installation filter cylinder 413 is equidistantly provided with filter holes 414. A circular clamping block 415 is fixedly installed at the bottom of the installation filter cylinder 413, and the circular clamping block 415 is clamped and connected with the installation card slot 412.

[0030] By providing the filter holes 414, impurities are effectively intercepted, and the fuel is preliminarily filtered, enabling the pure fuel to continue to move forward.

[0031] By providing the installation card slot 412 and the circular clamping block 415, the installation stability is achieved, and it is also convenient for subsequent maintenance and replacement.

[0032] Furthermore, in this embodiment, by providing the flow-through groove 411, the installation filter cylinder 413, and the filter holes 414, the fuel entering the system is filtered, effectively removing impurities and particulate matter in the fuel, ensuring the purity of the fuel entering the injector cavity 423, thereby reducing engine wear and performance degradation caused by unclean fuel and extending the engine service life.

[0033] Embodiment 2

[0034] On the basis of Embodiment 1, a preferred embodiment of the continuous injection fuel injector provided by the present utility model is as Figures 1-4 shown: The injection part 42 includes: a guide block 421, the guide block 421 is fixedly installed on the inner wall of the injector housing 1; an injector cavity 423, the injector cavity 423 is opened inside the injector housing 1; an oil output channel 427, the oil output channel 427 is arranged below the injector cavity 423; a guide hole 422 is opened at the top of the guide block 421, and an oil pushing rod 424 is arranged inside the injector cavity 423.

[0035] By providing a guiding block 421, a stable movement trajectory is provided for the oil fluid pushing rod 424.

[0036] Below the guiding block 421, a first oil seal washer 425 is provided. Below the first oil seal washer 425, a spring 426 is provided, and the spring 426 is located on the outer wall of the oil fluid pushing rod 424.

[0037] By providing a spring 426, a necessary restoring force is provided to make the injection action accurate.

[0038] Below the oil fluid output channel 427, a fixed collar 428 is provided, and the fixed collar 428 is fixedly installed at the bottom of the fuel injector housing 1. Below the fixed collar 428, a second oil seal washer 429 is provided.

[0039] Below the oil fluid output channel 427, a needle valve 4210 is communicatively provided. At the bottom of the needle valve 4210, an injection nozzle 4211 is provided.

[0040] Furthermore, in this embodiment, by providing a guiding block 421, a fuel injector cavity 423, an oil fluid pushing rod 424, and a spring 426, the oil fluid pushing rod 424 maintains a stable initial position under the action of the spring 426. When receiving an injection signal, it can quickly and accurately push fuel to the oil fluid output channel 427, ensuring the accuracy of fuel injection and being more stable and reliable during continuous use. Further, by providing a first oil seal washer 425 and a second oil seal washer 429, fuel leakage is effectively prevented, improving the sealing performance of the fuel injector.

[0041] In use, first, fuel enters the interior of the mounting sleeve 3 through the inlet at the top of the mounting sleeve 3, extends through the mounting filter cartridge 413 into the flow channel 411. The filter holes 414 equidistantly arranged on the outer wall circumference allow the fuel to pass through, while effectively intercepting and blocking any particulate matter or impurities, ensuring that only clean fuel can continue to flow to the next stage. Further, the filtered fuel then enters the injector housing 1. The guide hole 422 at the top of the guide block 421 is in communication with the injector cavity 423. The injector cavity 423 is the storage space before the fuel is ready to be pushed out. Inside the injector cavity 423, the hydraulic fluid push rod 424 maintains a certain initial position under the action of the spring 426. When fuel injection is required, an external drive mechanism will push the hydraulic fluid push rod 424 downward, compressing the spring 426 and generating a thrust to push the fuel in the injector cavity 423 outwards through the hydraulic fluid output channel 427. Further, below the hydraulic fluid output channel 427, the fixed collar 428 is firmly installed at the bottom of the injector housing 1, ensuring the integrity of the structure. At the same time, the second oil seal gasket 429 provided below the fixed collar 428 plays a key role in preventing fuel leakage. The hydraulic fluid push rod 424 pushes the fuel to the needle valve 4210. The opening of the needle valve 4210 is controlled by an external electrical signal, and the fuel is then sprayed out in an extremely fine mist through the nozzle 4211 at the bottom of the needle valve.

[0042] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A continuous injection fuel injector, comprising a fuel injector housing (1), characterized in that: A connecting protection ring (2) is fixedly mounted on the top of the fuel injector housing (1), and a mounting sleeve (3) is fixedly mounted on the top of the connecting protection ring (2); A filter injection assembly (4), wherein the filter injection assembly (4) is arranged inside the injector housing (1) and inside the mounting sleeve (3); The filtering and spraying assembly (4) comprises: A filtering portion (41), wherein the filtering portion (41) is arranged inside the mounting sleeve (3); The fuel injection portion (42) is arranged inside the fuel injector housing (1), and the fuel injection portion (42) is located below the filtering portion (41).

2. A continuous injection fuel injector according to claim 1, characterized in that: The filtering part (41) comprises: A circulation groove (411), wherein the circulation groove (411) is opened at the top of the mounting sleeve (3); An installation slot (412) is provided on the outside of the circulation slot (411), and the installation slot (412) is opened on the top of the installation sleeve (3). An installation filter cartridge (413) is provided above the installation slot (412), and the installation filter cartridge (413) extends to the inside of the circulation slot (411).

3. A continuous injection fuel injector according to claim 2, characterized in that: The outer wall of the installation filter cartridge (413) is provided with filter holes (414) at equal intervals on its circumference, and a circular clamping block (415) is fixedly mounted on the bottom of the installation filter cartridge (413), and the circular clamping block (415) is clamped and connected to the installation clamping groove (412).

4. A continuous injection fuel injector according to claim 1, characterized in that: The oil injection part (42) includes: A guide block (421), wherein the guide block (421) is fixedly mounted on the inner wall of the fuel injector housing (1); An injector cavity (423), wherein the injector cavity (423) is opened inside the injector housing (1); An oil output channel (427), wherein the oil output channel (427) is arranged below the fuel injector cavity (423); A guide hole (422) is provided at the top of the guide block (421), and an oil push rod (424) is provided inside the fuel injector cavity (423).

5. A continuous injection fuel injector according to claim 4, characterized in that: An oil seal gasket (425) is disposed below the guide block (421), a spring (426) is disposed below the oil seal gasket (425), and the spring (426) is located on the outer wall of the oil push rod (424).

6. A continuous injection fuel injector according to claim 5, characterized in that: A fixing collar (428) is provided below the oil output channel (427), and the fixing collar (428) is fixedly mounted on the bottom of the injector housing (1), and an oil seal gasket 2 (429) is provided below the fixing collar (428).

7. A continuous injection fuel injector according to claim 6, characterized in that: A needle valve (4210) is provided below the oil output channel (427), and an oil injection nozzle (4211) is provided at the bottom of the needle valve (4210).

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