Anti-blocking oil nozzle structure

Abstract

The utility model provides an anti -blocking oil nozzle structure, this utility model includes shell and shower nozzle, the outside of shell is provided with oil inlet, the inside of shell is provided with oil inlet channel, and the oil inlet is linked with the shower nozzle through the oil inlet channel, the inside of shell is provided with the installation groove, the inside installation of installation groove has the thimble, and the thimble penetrates installation groove, and the upper end fixed mounting of thimble has thimble pressing block, and the spring is installed in the installation groove, and the upper and lower both ends of installation groove are fixedly provided with the limit seal ring, and the spring is fixedly installed between two limit seal rings, the upper end of shower nozzle is installed with the screen, and the filter groove is installed at the oil inlet. The utility model can realize oil liquid double filtration and intercept impurity, reduce oil dirt adhesion and channel retention, give consideration to sealing and convenient maintenance, adapt to fuel engine, industrial lubricating equipment and multiple scenes, guarantee oil nozzle long -term stable oil injection, improve equipment work efficiency and service life.

Description

Technical Field

[0001] This utility model relates to the field of nozzle technology, and in particular to an anti-clogging nozzle structure. Background Technology

[0002] As a key component in fuel engines, lubrication systems, and various fuel injection devices, the performance of fuel injectors directly affects the equipment's working efficiency, energy consumption, and service life. In automotive engine fuel injection systems, fuel injectors must inject fuel into the cylinder at a precise flow rate and in an atomized state to achieve efficient combustion; in industrial lubrication equipment, fuel injectors are responsible for accurately delivering lubricating oil to the surfaces of components that require lubrication, reducing frictional losses.

[0003] Existing technology discloses an improved lubricating oil injector with application number 202121068345.2, which includes an oil inlet connector, a nozzle body, and a filling needle. The oil inlet connector and the nozzle body are detachably connected, and the nozzle body is interconnected with the oil inlet connector. An oil injection hole is formed at the end of the nozzle body away from the oil inlet connector. The inner diameter of the nozzle body is larger than the diameter of the oil injection hole, and the filling needle is inserted into the nozzle body. This application improves the stability of the filling needle. However, the existing technology still relies solely on the nozzle body's own orifice diameter for filtration, lacking a targeted filtration structure. Metal debris and impurities in the oil easily enter and accumulate in the injection hole, causing blockage and affecting fuel atomization or lubricating oil delivery accuracy. Therefore, we propose an anti-clogging injector structure to solve the above problems. Utility Model Content

[0004] To address the shortcomings mentioned above, this utility model provides an anti-clogging nozzle structure that enables dual filtration of oil to intercept impurities, reduces oil stains and channel stagnation, and balances sealing with convenient maintenance. It is suitable for various scenarios such as fuel engines and industrial lubrication equipment, ensuring long-term stable oil injection and improving equipment efficiency and service life.

[0005] To solve the above problems, the technical solution provided by this utility model is as follows:

[0006] An anti-clogging nozzle structure includes a housing and a nozzle. An oil inlet is provided on the outer side of the housing, and an oil inlet channel is provided inside the housing. The oil inlet is connected to the nozzle through the oil inlet channel. An installation groove is provided inside the housing, and a ejector pin is installed inside the installation groove, penetrating the installation groove. A ejector pin pressing block is fixedly installed at the upper end of the ejector pin. A spring is installed in the installation groove. Limiting sealing rings are fixedly provided at both the upper and lower ends of the installation groove, and the spring is fixedly installed between the two limiting sealing rings. A filter screen is installed at the upper end of the nozzle, and a filter groove is installed at the oil inlet.

[0007] Furthermore, the filter tank and the oil inlet are detachably snapped together, and a metal filter screen is embedded inside the filter tank.

[0008] Furthermore, the upper end of the nozzle is provided with a slot that matches the filter screen. The filter screen has a double-layer composite structure, with the upper layer being a stainless steel woven mesh and the lower layer being a polyester fiber filter cotton.

[0009] Furthermore, the lower end of the ejector pin extends into the oil inlet channel, and the lower end of the ejector pin is hemispherical. A sealing groove adapted to the hemispherical end of the ejector pin is provided in the oil inlet channel. In its natural state, the ejector pin fits into the sealing groove by the spring force. Pressing the ejector pin pressing block can cause the ejector pin to disengage from the sealing groove.

[0010] Furthermore, the limiting sealing ring is made of nitrile rubber, and the inner wall of the limiting sealing ring is interference-fitted with the outer wall of the ejector pin, and the outer wall is interference-fitted with the inner wall of the mounting groove.

[0011] Furthermore, the nozzle has a tapered, constricted spray port, and the inner wall of the spray port is coated with a nano-ceramic coating.

[0012] Furthermore, a first flange and a second flange are respectively installed at both ends of the housing, with the first flange near the oil inlet and the second flange near the nozzle.

[0013] Compared with the prior art, the present invention has the following advantages:

[0014] 1. Dual filtration prevents clogging and intercepts impurities more thoroughly: Existing technologies rely solely on passive filtration through the nozzle tube aperture, making it easy for impurities to penetrate. This invention forms a dual protection system through an "inlet filter tank + nozzle filter screen". The filter tank first blocks large particles of impurities, and the double-layer composite filter screen at the nozzle further filters fine dust and sludge, preventing impurities from entering the injection hole and accumulating at the source, significantly reducing the risk of clogging.

[0015] 2. Optimized structure improves performance, with dual protection for sealing and oil injection: The hemispherical end of the ejector pin fits snugly with the sealing groove, and the nitrile rubber limiting sealing ring is interference-fitted to form a double seal, effectively preventing oil leakage; the conical nozzle of the nozzle enhances the injection pressure, and the nano-ceramic coating on the inner wall reduces oil stains, which not only improves the accuracy of fuel atomization and lubricating oil delivery, but also avoids the reduction of the nozzle diameter, ensuring long-term stable operation.

[0016] 3. More convenient maintenance and installation, and wider application scenarios: The filter tank is detachable and snap-fit, so the filter screen can be cleaned or replaced without disassembling the entire oil nozzle, solving the problem of cumbersome maintenance of existing technology; the flange structure at both ends of the shell is adapted to the installation requirements of different equipment, which is more stable than the traditional threaded connection and reduces loosening caused by vibration. It can be used in many scenarios such as fuel engines and industrial lubrication equipment.

[0017] In summary, this anti-clogging nozzle structure has wide applicability, addressing the problem that existing technologies mentioned in the background technology still rely solely on the nozzle tube's own aperture for filtration, lacking a targeted filtration structure. This allows metal debris and impurities in the oil to easily enter and accumulate in the injection hole, leading to clogging and affecting fuel atomization or lubricant delivery accuracy. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Explanation of key component symbols:

[0020] 1-Outer shell, 2-Oil inlet, 3-Nozzle, 4-Filter tank, 5-Oil inlet channel, 6-Filter screen, 7-Mounting groove, 8-Pin, 9-Spring, 10-Limit sealing ring, 11-Pin pressing block, 12-First flange, 13-Second flange. Detailed Implementation

[0021] To make the objectives, technical solutions and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and examples, but the examples given are not intended to limit the present utility model.

[0022] like Figure 1 As shown, the embodiment of this utility model includes a housing 1 and a nozzle 3. The nozzle uses the housing 1 as its main frame, with a first flange 12 and a second flange 13 installed at both ends. The first flange near the oil inlet 2 facilitates connection to the oil supply pipeline, while the second flange near the nozzle 3 enhances the sealing of the nozzle installation and prevents oil leakage. The housing internally constructs a complete "oil inlet-filtration-oil control-oil spraying" channel: the outer oil inlet 2 is connected to the nozzle 3 through the internal oil inlet channel 5. After the oil enters from the oil inlet, it is first initially filtered by the detachable filter groove 4 at the oil inlet. The filter groove is equipped with a metal filter screen, which can intercept larger particulate impurities in the oil. The detachable design facilitates later cleaning or replacement of the filter screen, avoiding filter screen clogging caused by long-term use.

[0023] To further improve filtration accuracy, a filter screen 6 is installed at the top of the nozzle 3 via a slot. The filter screen adopts a double-layer composite structure: the upper layer of stainless steel woven mesh can filter medium-sized particulate impurities in a secondary manner, while the lower layer of polyester fiber filter cotton can adsorb fine impurities and sludge. This dual filtration design significantly reduces the probability of impurities entering the fuel injector, reducing the risk of clogging at the source. At the same time, the fuel injector of the nozzle 3 is tapered, which can enhance the fuel injection pressure, ensure the fuel atomization effect, and reduce the accumulation of impurities at the outlet. The nano-ceramic coating on the inner wall of the fuel injector improves surface smoothness and wear resistance, prevents impurities from adhering, extends the service life of the fuel injector, and reduces fuel injection deviation caused by wear.

[0024] The mounting groove 7 inside the outer casing 1 houses an oil control and sealing mechanism consisting of a pin 8 and a spring 9, achieving precise oil control and leak prevention. The pin 8 penetrates the mounting groove, with the upper end fixed to the pin pressing block 11, and the lower end extending into the oil inlet channel 5 in a hemispherical shape, fitting the sealing groove in the oil inlet channel. The limiting sealing rings 10 at both ends of the mounting groove are made of nitrile rubber, with their inner walls and the outer walls of the pin and the mounting groove being interference fit. This double interference seal effectively prevents oil from seeping into the mounting groove, avoiding leakage. In its natural state, the spring 9 pushes the lower end of the pin to fit against the sealing groove, blocking the oil inlet channel. When the pin pressing block is pressed, the pin compresses the spring and disengages from the sealing groove, opening the oil inlet channel and allowing the oil to flow smoothly to the nozzle, achieving precise control of "press to dispense oil, release to cut off oil." At the same time, the matching design of the hemispherical pin and the sealing groove further enhances the sealing effect and reduces dripping.

[0025] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A clog-resistant nozzle structure, comprising a housing (1) and a nozzle (3), wherein an oil inlet (2) is provided on the outer side of the housing (1), and an oil inlet channel (5) is provided inside the housing (1), and the oil inlet (2) is connected to the nozzle (3) through the oil inlet channel (5), characterized in that, The housing (1) has an internal mounting groove (7), and a ejector pin (8) is installed inside the mounting groove (7). The ejector pin (8) passes through the mounting groove (7). An ejector pin pressing block (11) is fixedly installed at the upper end of the ejector pin (8). A spring (9) is installed inside the mounting groove (7). Limiting sealing rings (10) are fixedly installed at both the upper and lower ends of the mounting groove (7). The spring (9) is fixedly installed between the two limiting sealing rings (10). A filter screen (6) is installed at the upper end of the nozzle (3). A filter groove (4) is installed at the oil inlet (2).

2. The anti-clogging nozzle structure as described in claim 1, characterized in that, The filter tank (4) and the oil inlet (2) are detachably snapped together, and a metal filter screen is embedded inside the filter tank (4).

3. The anti-clogging nozzle structure as described in claim 2, characterized in that, The nozzle (3) has a slot at the upper end that is compatible with the filter screen (6). The filter screen (6) has a double-layer composite structure, with the upper layer being a stainless steel woven mesh and the lower layer being a polyester fiber filter cotton.

4. The anti-clogging nozzle structure as described in claim 3, characterized in that, The lower end of the ejector pin (8) extends into the oil inlet channel (5), and the lower end of the ejector pin (8) is hemispherical. A sealing groove adapted to the hemispherical end of the ejector pin (8) is provided in the oil inlet channel (5). In its natural state, the ejector pin (8) is in contact with the sealing groove by the elastic force of the spring (9). Pressing the ejector pin pressing block (11) can make the ejector pin (8) disengage from the sealing groove.

5. The anti-clogging nozzle structure as described in claim 4, characterized in that, The limiting sealing ring (10) is made of nitrile rubber, and the inner wall of the limiting sealing ring (10) is interference-fitted with the outer wall of the ejector pin (8), and the outer wall is interference-fitted with the inner wall of the mounting groove (7).

6. The anti-clogging nozzle structure as described in claim 5, characterized in that, The nozzle (3) has a tapered, constricted oil spray port, and the inner wall of the oil spray port is provided with a nano-ceramic coating.

7. The anti-clogging nozzle structure as described in claim 6, characterized in that, The outer casing (1) is equipped with a first flange (12) and a second flange (13) at its two ends respectively. The first flange (12) is located near the oil inlet (2), and the second flange (13) is located near the nozzle (3).

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