Oil sprayer with flow limiting structure

Abstract

The oil sprayer with the flow limiting structure comprises a valve body assembly and further comprises a flow limiting assembly used for preventing the oil inlet amount in the valve body assembly from being too large. A flow limiting plate is fixedly arranged in the output end of the valve body assembly. The oil inlet pipeline fixedly communicates with the valve body assembly; the oil inlet cavity is formed in the bottom of the oil inlet pipeline, and the bottom is conical; the oil inlets are formed in the two ends of the oil inlet pipeline and communicate with the oil inlet cavity; the fixed plate is fixedly arranged in the oil inlet, and an oil inlet hole is formed in the surface of the fixed plate; the fixed sleeve is fixedly arranged on the outer side of the fixed plate; the movable plate is movably arranged in the top of the oil inlet cavity; the top end of the fixed rod is fixedly connected with the movable plate, and the bottom end is movably arranged in the fixed sleeve; in daily production and life, the movable plate is matched with the cone at the bottom of the oil inlet cavity, so that the flowing space of oil is reduced when the input amount of the oil is too large, the amount of the oil flowing into the oil injector is prevented from being too large, and normal operation of the oil injector is maintained.

Description

Technical Field

[0001] The utility model relates to a fuel injector provided with a flow limiting structure. Background Art

[0002] The fuel injector used in today's cars is actually a simple solenoid valve. When the solenoid 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 pin at the head of the needle valve and the spray hole to form a mist, which is conducive to full combustion. For example, the valve core and fuel injector with patent publication number CN218971322U, the valve core includes a sliding section, a conical section, a rod section and a steel ball connected in sequence, the sliding section is shorter, and includes a rod section with a smaller diameter, so the overall weight of the valve core is lighter, so that the fuel injector can respond quickly.

[0003] This embodiment can solve the problem of valve core high-speed motion stuck and failure, ensuring the normal use of the product, but it has the following defects:

[0004] 1. The oil inlet hole is set to realize the input of oil, but the input amount of oil cannot be controlled, which affects the injection of fuel and the subsequent combustion effect;

[0005] 2. There is no oil filtering component in the oil inlet hole, and impurities mixed in the oil will affect the normal operation of the injector. Summary of the invention

[0006] The utility model aims to solve one of the technical problems existing in the prior art.

[0007] The present application provides a fuel injector provided with a flow limiting structure, comprising a valve body assembly, and further comprising:

[0008] A flow limiting component, which is used to prevent excessive oil inflow into the valve body component;

[0009] Wherein, a flow limiting plate is fixedly provided inside the output end of the valve body assembly.

[0010] The current limiting components include:

[0011] An oil inlet component, which is used to input oil into the valve body assembly;

[0012] A flow limiting component, which is used to limit the oil flow of the oil inlet component;

[0013] Wherein, the flow limiting component is movably arranged in the oil inlet component.

[0014] The oil inlet components include:

[0015] An oil inlet pipeline, which is fixedly connected to the valve body assembly;

[0016] An oil inlet cavity, which is arranged in the bottom of the oil inlet pipeline and has a conical bottom;

[0017] A pair of oil inlets, which are arranged at both ends of the oil inlet pipeline and communicate with the oil inlet cavity;

[0018] The flow limiting component is slidably matched with the oil inlet cavity.

[0019] Current limiting components include:

[0020] A fixing member, which is fixed in the bottom oil inlet;

[0021] An elastic member, which is fixedly connected to the fixing member and has a top movably disposed in the oil inlet cavity;

[0022] The elastic member is slidably matched with the oil inlet cavity.

[0023] The fixings include:

[0024] A fixed plate, which is fixed in the bottom oil inlet;

[0025] A fixed sleeve, which is fixedly arranged on the outside of the fixed plate;

[0026] A plurality of oil inlet holes are evenly arranged on the fixed plate;

[0027] Wherein, the elastic member is fixedly connected to the fixing sleeve.

[0028] The elastic member includes:

[0029] A movable plate, which is movably arranged in the top of the oil inlet chamber;

[0030] The top end of the fixed rod is fixedly connected to the movable plate, and the bottom end is movably arranged in the fixed sleeve; the two ends of the spring are fixedly connected to the movable plate and the fixed sleeve.

[0031] Also includes:

[0032] A mounting hole, which is arranged on the side of the oil inlet pipeline and communicated with the top oil inlet;

[0033] A filter element, which penetrates the mounting hole and is fixedly connected to the oil inlet pipeline;

[0034] The sealing element is fixedly arranged between the mounting hole and the filter element.

[0035] Filters include:

[0036] The mounting plate has a bracket fixed at the bottom end thereof and is movably mounted in the mounting hole;

[0037] A plurality of filter plates are fixed in the bracket;

[0038] A plurality of adsorption blocks are fixed in the bracket and located on the side of the filter plate.

[0039] Also includes:

[0040] A plurality of thread grooves are arranged outside the oil inlet pipe;

[0041] A plurality of bolts are movably inserted through the mounting plate and the sealing member and fixedly mounted in the thread groove.

[0042] The beneficial effects of the utility model are as follows:

[0043] 1. The movable plate cooperates with the cone at the bottom of the oil inlet chamber to reduce the oil flow space when the oil input is too large, thereby preventing excessive oil from flowing into the injector and maintaining the normal operation of the injector;

[0044] 2. Through the setting of filter plates and adsorption blocks, the oil is cleaned and filtered to prevent impurities in the oil from affecting the normal operation of the injector. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a front view of the fuel injector in the embodiment of the present application;

[0046] Figure 2 This is a schematic diagram of the three-dimensional structure of the current limiting plate in the embodiment of the present application;

[0047] Figure 3 Based Figure 1 A schematic diagram of the enlarged local structure at center A;

[0048] Figure 4 Based Figure 1 Enlarged schematic diagram of the local structure at point B in the middle.

[0049] Reference numerals

[0050] 1-valve body assembly, 2-flow limiting assembly, 3-flow limiting plate, 4-oil inlet component, 41-oil inlet pipeline, 42-oil inlet chamber, 43-oil inlet, 5-flow limiting component, 6-fixing part, 61-fixing plate, 62-fixing sleeve, 63-oil inlet hole, 7-elastic part, 71-movable plate, 72-fixing rod, 73-spring, 8-mounting hole, 9-filter, 91-mounting plate, 92-bracket, 93-filter plate, 94-adsorption block, 10-seal, 11-thread groove, 12-bolt. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0052] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0053] The server provided in the embodiment of the present application is described in detail below through specific embodiments and application scenarios in conjunction with the accompanying drawings.

[0054] Embodiment 1:

[0055] like Figures 1 to 3 As shown, an embodiment of the present application provides an injector with a flow limiting structure, including a valve body assembly 1 and a flow limiting assembly 2, which is used to prevent excessive oil inflow into the valve body assembly 1; wherein a flow limiting plate 3 is fixedly provided at the output end of the valve body assembly 1.

[0056] Furthermore, the flow limiting component 2 includes an oil inlet component 4, which is used to input oil into the valve body component 1; a flow limiting component 5, which is used to limit the oil flow rate of the oil inlet component 4; wherein the flow limiting component 5 is movably arranged in the oil inlet component 4.

[0057] Furthermore, the oil inlet component 4 includes an oil inlet pipe 41, which is fixedly connected to the valve body assembly 1; an oil inlet chamber 42, which is arranged at the bottom of the oil inlet pipe 41 and has a conical bottom; a pair of oil inlet ports 43, which are arranged at both ends of the oil inlet pipe 41 and connected to the oil inlet chamber 42; wherein the flow limiting component 5 is slidably matched with the oil inlet chamber 42.

[0058] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the valve body assembly 1 is composed of a combination of several components such as a valve shell, a valve seat, a magnetic coil, a valve needle, etc., wherein an oil injection hole is arranged in the valve seat, and a flow limiting plate 3 is fixedly installed in the valve seat. A small hole is arranged in the center of the flow limiting plate 3, and the small hole is opposite to the oil injection hole to realize the injection of oil.

[0059] The limiting plate 3 is made of high-strength, high-temperature-resistant and corrosion-resistant material, and the surface of the limiting plate 3 is smooth, without defects such as burrs and cracks, which reduces the fuel flow resistance and prevents carbon deposition; the limiting plate 3 is bowl-shaped and concave, and the inner surface is smooth, which reduces the fuel flow resistance. The depth of the bowl is adjusted according to the fuel pressure and injection requirements, and the diameter of the bowl mouth can be adjusted according to the specific requirements of the inner hole of the injection end of the injector.

[0060] The oil inlet pipeline 41 is fixedly arranged on the side of the valve body assembly 1 and is connected to the interior of the valve body assembly 1; oil inlet ports 43 are arranged at both ends of the oil inlet pipeline 41, and an oil inlet cavity 42 is arranged inside, and the oil inlet cavity 42 is connected to the oil inlet port 43 and the interior of the valve body assembly 1.

[0061] The bottom of the oil inlet chamber 42 is conical, and the flow limiting component 5 is arranged in the oil inlet pipe 41. The flow limiting component 5 changes its position in the oil inlet chamber 42 by sliding, so that it slides to the bottom of the oil inlet chamber 42, reducing the oil inlet cross-section of the oil inlet chamber 42, thereby achieving control of the flow of oil.

[0062] Embodiment 2:

[0063] like Figures 1 to 3 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, the flow limiting component 5 includes a fixing member 6, which is fixedly arranged in the bottom oil inlet 43; an elastic member 7, which is fixedly connected to the fixing member 6 and the top is movably arranged in the oil inlet chamber 42; wherein the elastic member 7 is slidably matched with the oil inlet chamber 42.

[0064] Furthermore, the fixing member 6 includes a fixing plate 61, which is fixed in the bottom oil inlet 43; a fixing sleeve 62, which is fixed on the outside of the fixing plate 61; and a plurality of oil inlet holes 63, which are evenly arranged on the fixing plate 61; wherein the elastic member 7 is fixedly connected to the fixing sleeve 62.

[0065] Furthermore, the elastic member 7 includes a movable plate 71, which is movably arranged in the top of the oil inlet chamber 42; a fixed rod 72, the top end of which is fixedly connected to the movable plate 71, and the bottom end is movably arranged in the fixed sleeve 62; and a spring 73, both ends of which are fixedly connected to the movable plate 71 and the fixed sleeve 62.

[0066] In this embodiment of the present application, due to the adoption of the above-mentioned structure, the fixed plate 61 is fixedly arranged in the oil inlet 43 close to the valve body assembly 1, and a plurality of oil inlet holes 63 are arranged on the fixed plate 61 to realize the flow of oil.

[0067] A fixed sleeve 62 is fixedly installed on the outer side of the fixed plate 61, and a fixed rod 72 is movably arranged in the movable sleeve. The top of the fixed rod 72 extends to the outside of the fixed sleeve 62, and a movable plate 71 is fixedly installed on the top of the fixed rod 72. The movable plate 71 is located in the top of the oil inlet chamber 42; the spring 73 is sleeved outside the top of the fixed rod 72, and the two ends are fixedly connected to the movable plate 71 and the fixed sleeve 62 respectively, so as to realize the fixed connection between the spring 73 and the fixed sleeve 62, and also realize the sliding and resetting of the movable plate 71.

[0068] When the oil is normally input, the oil is input into the oil inlet cavity 42 from the top oil inlet port 43, then flows from the peripheral side of the movable plate 71 through the oil inlet hole 63 into the bottom oil inlet port 43, and finally input into the valve body assembly 1 from the bottom oil inlet port 43 to realize the transmission of the oil; when the amount of oil input into the oil inlet cavity 42 from the top oil inlet port 43 is too large, the oil exerts pressure on the movable plate 71 in the oil inlet cavity 42, causing the movable plate 71 to slide in the oil inlet cavity 42, and the movable plate 71 enters the oil inlet cavity 42 when sliding in the oil inlet cavity 42. At the bottom, since the bottom of the oil inlet chamber 42 is conical, the distance between the peripheral side of the movable plate 71 and the inner wall of the oil inlet chamber 42 is reduced, thereby reducing the flow rate of the oil; during the movement of the movable plate 71, the movable plate 71 drives the fixed rod 72 to slide in the fixed sleeve 62, thereby limiting the moving direction of the movable plate 71, and at the same time, the cooperation between the movable plate 71 and the fixed sleeve 62 realizes the squeezing of the spring 73, and the spring 73 is deformed. When the oil flow returns to normal, the spring 73 recovers its deformation and pushes the movable plate 71 back to its original position.

[0069] Embodiment 3:

[0070] like Figures 1 to 4 As shown, in this embodiment, in addition to the structural features of the aforementioned embodiments, it also includes a mounting hole 8, which is arranged on the side of the oil inlet pipe 41 and is connected to the top oil inlet 43; a filter element 9, which passes through the mounting hole 8 and is fixedly connected to the oil inlet pipe 41; and a sealing element 10, which is fixedly arranged between the mounting hole 8 and the filter element 9.

[0071] Furthermore, the filter element 9 includes a mounting plate 91, a bracket 92 is fixedly provided at the bottom end thereof and movably mounted in the mounting hole 8; a plurality of filter plates 93, which are fixedly provided in the bracket 92; and a plurality of adsorption blocks 94, which are fixedly provided in the bracket 92 and are located on the side of the filter plate 93.

[0072] Furthermore, it also includes a plurality of thread grooves 11 , which are arranged outside the oil inlet pipe 41 ; and a plurality of bolts 12 , which movably penetrate the mounting plate 91 and the sealing member 10 , and are fixedly mounted in the thread grooves 11 .

[0073] In this embodiment of the present application, due to the adoption of the above-mentioned structure, a mounting hole 8 is provided on the top outer side of the oil inlet pipeline. Through the provision of the mounting hole 8, the bracket 92 can be installed in the oil inlet port of the oil inlet pipeline.

[0074] A plurality of filter plates 93 and adsorption blocks 94 are fixedly mounted on the bracket 92. The filter plates 93 can filter impurities mixed in the oil, and the adsorption blocks 94 can be configured as activated carbon to adsorb other impurities in the oil. Through the configuration of the filter plates 93 and the adsorption blocks 94, the oil entering the oil inlet can be cleaned.

[0075] The mounting plate 91 is arranged outside the oil inlet pipeline, and the sealing member 10 can be arranged as a sealing ring, which is arranged between the mounting plate 91 and the oil inlet pipeline for sealing the oil inlet pipeline.

[0076] The outer surface of the oil inlet pipe is provided with a plurality of thread grooves 11, and a plurality of bolts 12 are movably penetrated through the mounting plate 91 and the seal 10, and are installed in the thread grooves 11 to fix the mounting plate 91 and the bracket 92. At the same time, the bracket 92 can be disassembled by removing the bolts 12, so as to facilitate the cleaning and replacement of the filter plate 93 and the adsorption block 94 in the bracket 92.

[0077] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise one..." do not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0078] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A fuel injector with a flow limiting structure, comprising a valve body assembly (1), characterized in that: Also includes: A flow limiting component (2) is used to prevent excessive oil from entering the valve body component (1); Wherein, a flow limiting plate (3) is fixedly provided inside the output end of the valve body assembly (1).

2. A fuel injector with a flow limiting structure according to claim 1, characterized in that: The current limiting component (2) comprises: An oil inlet component (4) used for inputting oil into the valve body assembly (1); A flow limiting component (5) is used to limit the oil flow of the oil inlet component (4); Wherein, the flow limiting component (5) is movably arranged in the oil inlet component (4).

3. A fuel injector with a flow limiting structure according to claim 2, characterized in that: The oil inlet component (4) comprises: An oil inlet pipeline (41) fixedly connected to the valve body assembly (1); An oil inlet chamber (42) is provided in the bottom of the oil inlet pipeline (41) and has a conical bottom; A pair of oil inlets (43) are provided at both ends of the oil inlet pipeline (41) and communicate with the oil inlet chamber (42); Wherein, the flow limiting component (5) is in sliding cooperation with the oil inlet cavity (42).

4. A fuel injector with a flow limiting structure according to claim 3, characterized in that: The current limiting component (5) comprises: A fixing member (6) fixedly disposed in the oil inlet (43) at the bottom; An elastic member (7) is fixedly connected to the fixing member (6), and its top is movably arranged in the oil inlet chamber (42); Wherein, the elastic member (7) is in sliding cooperation with the oil inlet cavity (42).

5. The fuel injector with a flow limiting structure according to claim 4, characterized in that: The fixing member (6) comprises: A fixed plate (61) fixedly disposed in the oil inlet (43) at the bottom; A fixed sleeve (62) fixedly arranged on the outside of the fixed plate (61); A plurality of oil inlet holes (63) are evenly arranged on the fixing plate (61); Wherein, the elastic member (7) is fixedly connected to the fixing sleeve (62).

6. A fuel injector with a flow limiting structure according to claim 5, characterized in that: The elastic member (7) comprises: A movable plate (71) movably disposed in the top of the oil inlet chamber (42); A fixed rod (72), the top end of which is fixedly connected to the movable plate (71) and the bottom end of which is movably arranged in the fixed sleeve (62); The spring (73) has two ends fixedly connected to the movable plate (71) and the fixed sleeve (62).

7. The fuel injector with a flow limiting structure according to claim 3, characterized in that: Also includes: A mounting hole (8), which is arranged on the side of the oil inlet pipeline (41) and is connected to the top oil inlet (43); A filter element (9) passes through the mounting hole (8) and is fixedly connected to the oil inlet pipeline (41); A sealing element (10) is fixedly arranged between the mounting hole (8) and the filter element (9).

8. The fuel injector with a flow limiting structure according to claim 7, characterized in that: The filter element (9) comprises: A mounting plate (91) having a bracket (92) fixedly provided at its bottom end and movably mounted in the mounting hole (8); A plurality of filter plates (93) fixedly disposed in the bracket (92); A plurality of adsorption blocks (94) are fixedly arranged in the bracket (92) and located on the side of the filter plate (93).

9. The fuel injector with a flow limiting structure according to claim 8, characterized in that: Also includes: A plurality of thread grooves (11) arranged outside the oil inlet pipeline (41); A plurality of bolts (12) penetrate through the mounting plate (91) and the sealing member (10) and are fixedly mounted in the thread groove (11).

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