阅读说明：本技术 一种喷油器的防滴油装置 (Oil dripping prevention device of oil sprayer ) 是由 阳忠海 于 2020-06-04 设计创作，主要内容包括：本发明涉及汽车配件技术领域,且公开了一种喷油器的防滴油装置,包括机体,所述机体一侧的上端固定连接有接线端,所述机体一侧的中部固定连接有位于接线端下方的入油口,所述机体内腔的上端固定连接有线圈。本发明通过将传喷油器的针阀式密封改为封口板对喷油器进行密封,通过线圈通断控制连接杆上下移动,并带动封口块上下移动,在需要对喷孔进行密封时,通过滚珠将活动块向中部移动,通过“T”形的封口板对活动块的上表面与内腔的上表面进行压盖式密封,避免了传统针阀式密封在高压油流喷射下使针阀杆前端出现刻痕或斑点,或针阀杆前端与喷孔摩擦,针阀杆前端出现磨损,导致喷油器滴油的问题。(The invention relates to the technical field of automobile accessories and discloses an oil dripping prevention device of an oil sprayer. According to the invention, the needle valve type seal of the oil injector is changed into the seal plate to seal the oil injector, the coil is switched on and off to control the connecting rod to move up and down and drive the seal block to move up and down, when the spray orifice needs to be sealed, the movable block is moved to the middle part through the ball, and the upper surface of the movable block and the upper surface of the inner cavity are sealed in a gland type through the T-shaped seal plate, so that the problem that the traditional needle valve type seal causes nicks or spots at the front end of a needle valve rod under the injection of high-pressure oil flow, or the front end of the needle valve rod is abraded due to the friction between the front end of the needle valve rod and the spray orifice.)

1. The utility model provides an oil drip proof device of sprayer, includes organism (1), its characterized in that: the upper end of one side of the machine body (1) is fixedly connected with a wiring end (2), the middle part of one side of the machine body (1) is fixedly connected with an oil inlet (3) positioned below the wiring end (2), the upper end of the inner cavity of the machine body (1) is fixedly connected with a coil (4), an armature (5) positioned below the coil (4) is movably sleeved above the inner cavity of the machine body (1), the other end of the armature (5) is fixedly connected with a connecting rod (6), the other end of the connecting rod (6) is fixedly connected with a sealing block (13), the upper surface of the sealing block (13) is fixedly connected with a spring I (7) which is movably sleeved on the outer surface of one end of the connecting rod (6), the middle part of the inner cavity of the sealing block (13) is movably sleeved with a sealing plate (11), the upper surface of the sealing plate (11) is movably connected with the upper surface, seal piece (13) lower extreme fixedly connected with ball (8), the lower extreme swing joint of organism (1) has movable block (9), movable block (9) divide into about two, and two shapes after movable block (9) close up are round platform shape, the inboard one end in movable block (9) upper end is the inclined plane, and inclination is the same with outside inclination, seal board (11) for "T" font, and the height of riser is the same with the height on the inboard inclined plane of movable block (9), orifice (12) have been seted up at the middle part of movable block (9), the lower extreme fixedly connected with of organism (1) is located fixed block (10) of movable block (9) one side surface.

2. An oil drip prevention device of an oil injector according to claim 1, characterized in that: the utility model discloses a telescopic engine, including organism (1), movable block (9), fixture block (15), and fixture block (15), the lower extreme shape of fixture block (15) is connected to the surface activity of dead lever (14), and fixture block (15) are "T" font, the lateral wall fixedly connected with of fixed block (10) inner chamber is located ratchet plate (16) of fixture block (15) one end, the lower fixed surface of fixture block (15) other end is connected with flexible piece (17), one side of flexible piece (17) lower extreme is the arc, and the opposite side is vertical, and one side that movable block (9) are located flexible piece (17) is seted up the trompil the same with flexible piece (17) lower extreme shape.

Technical Field

The invention relates to the technical field of automobile parts, in particular to an oil dripping prevention device of an oil sprayer.

Background

The fuel injector is an automobile part which sprays high-pressure diesel oil in an oil pump into a combustion chamber of an engine to facilitate the atomization of the diesel oil and make the diesel oil distributed in the combustion chamber to be mixed with air.

The operating principle of the oil injector is that the coil is controlled to be conducted through the ECU, the coil generates magnetism, the armature is sucked upwards, the armature drives the needle valve rod to move upwards, the spray hole closed by one end of the needle valve rod is opened, high-pressure diesel oil entering the inner cavity of the oil injector from the oil inlet is sprayed out of the spray hole and atomized, when the ECU controls the coil to be powered off, the needle valve rod is reset by the spring to block the spray hole, but when the oil injector works, the sealing conical surface of the needle valve body is frequently impacted by the strong force of the needle valve, and the high-pressure oil flow is continuously sprayed out from the position, the conical surface gradually generates nicks or spots to lose the seal, so that the oil dripping phenomenon of the oil injector is caused, and because the high-pressure oil flow is continuously sprayed and washed, the needle valve gradually grinds to be large, so that the oil injection pressure is reduced, the injection distance is shortened, the diesel oil is poorly, affecting the operating life of the engine.

Disclosure of Invention

Aiming at the defects of the existing oil sprayer in the use process in the background technology, the invention provides the oil dripping prevention device of the oil sprayer, which has the advantages of oil dripping prevention and unchanged atomization degree, and solves the problems in the background technology.

The invention provides the following technical scheme: an oil dripping prevention device of an oil sprayer comprises a machine body, wherein the upper end of one side of the machine body is fixedly connected with a wiring end, the middle part of one side of the machine body is fixedly connected with an oil inlet positioned below the wiring end, the upper end of an inner cavity of the machine body is fixedly connected with a coil, an armature positioned below the coil is movably sleeved above the inner cavity of the machine body, the other end of the armature is fixedly connected with a connecting rod, the other end of the connecting rod is fixedly connected with a sealing block, the upper surface of the sealing block is fixedly connected with a spring I which is movably sleeved on the outer surface of one end of the connecting rod, the middle part of the inner cavity of the sealing block is movably sleeved with a sealing plate, the upper surface of the sealing plate is movably connected with the upper surface of the inner cavity of the sealing block through a spring II, the lower end of, and the shape after two movable blocks close up is round platform shape, the inboard one end in movable block upper end is the inclined plane, and inclination is the same with outside inclination, seal the board and be "T" font, and the height of riser is the same with the height on the inboard inclined plane of movable block, the orifice has been seted up at the middle part of movable block, the lower extreme fixedly connected with of organism is located the fixed block of movable block one side surface

Preferably, the movable block passes through spring III and organism swing joint, and spring III is located the below of fixed block, the middle part fixedly connected with dead lever of fixed block inner chamber, the fixture block has been cup jointed in the surface activity of dead lever, and the fixture block is "T" font, the lateral wall fixedly connected with of fixed block inner chamber is located the ratchet plate of fixture block one end, the lower fixed surface of the fixture block other end is connected with flexible piece, one side of flexible piece lower extreme is the arc, and the opposite side is vertical, and the movable block is located one side of flexible piece and offers the trompil the same with flexible piece lower extreme shape.

The invention has the following beneficial effects:

1. according to the invention, the needle valve type seal of the oil injector is changed into the seal plate to seal the oil injector, the coil is switched on and off to control the connecting rod to move up and down and drive the seal block to move up and down, when the spray orifice needs to be sealed, the movable block is moved to the middle part through the ball, and the upper surface of the movable block and the upper surface of the inner cavity are sealed in a gland type through the T-shaped seal plate, so that the problem that the traditional needle valve type seal causes nicks or spots at the front end of a needle valve rod under the injection of high-pressure oil flow, or the front end of the needle valve rod is abraded due to the friction between the front end of the needle valve rod and the spray orifice.

2. According to the invention, by additionally arranging the seal block reset position adjusting mechanism, after the inner side of the movable block is impacted by high-pressure oil flow and is worn, the novel sealing device ensures that the seal plate is sealed, the movable block is clamped with the telescopic block to enable the fixture block to move a small distance in the fixed rod, so that the position of one side of the fixture block on the ratchet plate is changed, the movable block can only be reset to the position where one end of the fixture block is located after being reset by the spring III, the phenomena that the nozzle hole of the needle valve is gradually abraded, the oil injection pressure is reduced, the injection distance is shortened, the diesel oil atomization is changed are avoided, and the diesel oil atomization degree of the nozzle hole sprayed after being worn is unchanged are ensured.

Drawings

FIG. 1 is a schematic internal perspective view of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of the present invention;

FIG. 3 is a perspective view of a structural seal block of the present invention;

fig. 4 is an enlarged view of the structure at a position a in the present invention.

In the figure: 1. a body; 2. a terminal; 3. an oil inlet; 4. a coil; 5. an armature; 6. a connecting rod; 7. a spring I; 8. a ball bearing; 9. a movable block; 10. a fixed block; 11. a sealing plate; 12. spraying a hole; 13. a sealing block; 14. fixing the rod; 15. a clamping block; 16. a ratchet plate; 17. a telescopic block; 18. a spring II; 19. and a spring III.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, an oil drip-proof device of an oil injector comprises a body 1, a terminal 2 is fixedly connected to the upper end of one side of the body 1, an oil inlet 3 positioned below the terminal 2 is fixedly connected to the middle of one side of the body 1, a coil 4 is fixedly connected to the upper end of the inner cavity of the body 1, an armature 5 positioned below the coil 4 is movably sleeved above the inner cavity of the body 1, a connecting rod 6 is fixedly connected to the other end of the armature 5, a sealing block 13 is fixedly connected to the other end of the connecting rod 6, a spring i 7 movably sleeved on the outer surface of one end of the connecting rod 6 is fixedly connected to the upper surface of the sealing block 13, a sealing plate 11 is movably sleeved at the middle of the inner cavity of the sealing block 13, the upper surface of the sealing plate 11 is movably connected with the top end of the inner cavity of the sealing block 13 through a spring, the movable block 9 is divided into a left movable block and a right movable block, the shape of the closed two movable blocks 9 is a round table shape, the inner side of the upper end of the movable block 9 is an inclined plane, the inclined angle is the same as the outer inclined angle, when the oil injector injects oil, the high-pressure oil flow which flows downwards can impact the inclined planes at the two sides of the upper end of the movable block 9, so that the pressure on the two sides of the movable block 9 is the same, the movable block 9 can not move due to the impact of the high-pressure oil flow, the distance between two points at the outermost side of the upper end of the movable block 9 is smaller than the distance between two points at the lowermost side of the two balls 8 when the movable block 9 is in an open state, after the sealing block 13 moves downwards, the two balls 8 can apply pressure to the outer surface of the movable block, the situation that the balls 8 press the upper surface of the movable block 9 to cause the movable block 9 to be unable to, orifice 12 is two movable block 9 oppositions and forms, the lower extreme fixedly connected with of organism 1 is located the fixed block 10 of movable block 9 one side surface, the bottom both sides swing joint of movable block 9 is in the inner chamber of fixed block 10, make and reset sealing block 13 through spring I7, extrude through ball 8, two movable block 9 move to the centre about making, and make and seal board 11 and push down, make the opening of orifice 12 sealed, make the orifice 12 of sprayer can be effectively sealed, it is sealed through the last top of sealing board 11 gland movable block 9, replace traditional needle valve rod point's conical surface sealed, make sealed department and the separation of high-pressure oil stream friction department, namely under the high-pressure oil stream wearing and tearing, still can ensure sealed effect.

Wherein, the movable block 9 is movably connected with the machine body 1 through a spring III 19, the spring III 19 is positioned below the fixed block 10, the middle part of the inner cavity of the fixed block 10 is fixedly connected with a fixed rod 14, the outer surface of the fixed rod 14 is movably sleeved with a fixture block 15, the fixture block 15 is in a T shape, the side wall of the inner cavity of the fixed block 10 is fixedly connected with a ratchet plate 16 positioned at one end of the fixture block 15, one end of the fixture block 15 is movably clamped with a ratchet of the ratchet plate 16, the lower surface of the other end of the fixture block 15 is fixedly connected with a telescopic block 17, one side of the lower end of the telescopic block 17 is arc-shaped, the other side is vertical, an opening with the same shape as the lower end of the telescopic block 17 is arranged at one side of the movable block 9, the initial size of the orifice 12 is determined by the contact of the side wall of the lower end, and when the spray orifice 12 is closed, just in time the flexible block 17 blocks with the hole below it, make after the spray orifice 12 receives the long-time friction of high-pressure oil stream, make the lateral wall of spray orifice 12 abrade, when alright through the movable block 9 is closed under the effect of ball 8, through trompil and flexible block 17 lower extreme block, make flexible block 17 drive fixture block 15 and remove, make the position of one end of fixture block 15 change, make the reset position behind the movable block 9 change, make the size of spray orifice 12 the same after wearing and tearing before wearing and, make the atomization degree of the high-pressure oil stream from spray orifice 12 the same.

The using method of the invention is as follows:

when the oil sprayer works normally: the fuel injector is arranged on a vehicle, the wiring terminal 2 is connected with an ECU, the oil inlet 3 is connected with an oil pump, the vehicle is started, an engine is started, a fuel injection nozzle enters into work, the ECU controls the coil 4 to be electrified, the coil 4 generates magnetic force, the armature 5 is sucked up, the armature 5 drives the connecting rod 6 and the sealing block 13 to move upwards, the spring I7 is compressed, the pressure of the ball 8 on the outer surface of the movable block 9 disappears, the movable block 9 moves towards the left side and the right side under the action of the spring III 19, the spray hole 12 is opened, high-pressure diesel oil injected into the inner cavity of the fuel injector from the oil inlet 3 is sprayed out in a conical shape from the spray hole 12, then the ECU controls the coil 4 to be powered off, the magnetism of the coil 4 disappears, the armature 5, the connecting rod 6 and the sealing block 13 reset under the action of the spring I7, and the ball 8 at the lower end of the sealing block 13, the movable blocks 9 on the left side and the right side move towards the middle, the sealing block 13 stops pressing after the side walls of the spray holes 12 of the movable blocks 9 on the left side and the right side contact, and meanwhile, the vertical plate of the sealing plate 11 covers the upper surface of the contacted spray holes 12 tightly, so that the spray holes 12 are sealed;

when the friction of the spray hole 12 increases: when the fuel injector is used for a long time, the side wall of the spray hole 12 is rubbed, so that the spray hole 12 is enlarged, the fuel injector normally works as usual, but when the spray hole 12 is sealed, the sealing block 13 is continuously pressed downwards under the action of the spring I7 until the side walls of the two sides of the spray hole 12 are attached, because the side wall of the spray hole 12 is abraded, the movable block 9 is moved a small distance more than the normal state, at the moment, the telescopic block 17 extends out and is clamped with the opening of the movable block 9 at one side of the telescopic block 17, so that the movable block 9 drives the fixture block 15 to move a small distance more than the movement, the position of one side of the fixture block 15 clamped on the ratchet plate 16 is changed, then when the fuel injector sprays fuel, the sealing block 13 moves upwards, so that the movable block 9 is reset under the action of the spring III 19, because the bottom end of the telescopic block 17 and one side of the opening at one side of the, at this time, the movable block 9 is reset towards the two sides of the fixed block 10, but due to the change of the position of one side of the fixture block 15, one side of the movable block 9 can only be reset to the position where one side of the fixture block 15 is located, so that the movable block 9 moves the wear distance of the spray hole 12 relative to the position where the spray hole 12 is not worn, the distance between the side walls of the spray hole 12 is restored to the distance before the wear, and the atomization degree of the high-pressure diesel sprayed from the spray hole 12 is not changed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.