阅读说明：本技术 一种燃油共轨的锻造工艺 (Forging process of fuel common rail ) 是由 林象 张俊俊 王振洲 王欢 李瑞恭 于 2020-05-13 设计创作，主要内容包括：本发明涉及一种燃油共轨的锻造工艺,包括如下步骤：S1、下料；S2、加热；S3、压扁；S4、成型；S5、切边；S6、固溶处理；S7、清理抛丸；S8、无损探伤；S9、表面钝化处理；S10、清洗包装；所述的步骤S6中的冷却装置包括箱体,箱体的开口设置在箱体的顶面上,在箱体内侧壁上固定安装有雾化喷头,雾化喷头设置有至少三个,雾化喷头喷淋的方向朝向箱体中心且倾斜向下,各个雾化喷头远离箱体内侧壁的一端均朝向雾化喷头的左侧或者右侧倾斜,在箱体内侧固定安装有鼓风装置,鼓风装置位于雾化喷头的下侧,且由下而上向箱体开口处鼓风。(The invention relates to a forging process of a fuel common rail, which comprises the following steps: s1, blanking; s2, heating; s3, flattening; s4, molding; s5, trimming; s6, solution treatment; s7, cleaning and shot blasting; s8, nondestructive inspection; s9, surface passivation treatment; s10, cleaning and packaging; the cooling device in step S6 includes the box, the opening setting of box is on the top surface of box, fixed mounting has atomizer on the box inside wall, atomizer is provided with at least three, the direction that atomizer sprays is downward towards box center and slope, the one end that box inside wall was kept away from to each atomizer all inclines towards atomizer 'S left side or right side, there is air-blast device at the inboard fixed mounting of box, air-blast device is located atomizer' S downside, and from bottom to top to box opening part blast air.)

1. A forging process of a fuel common rail is characterized by comprising the following steps: the method comprises the following steps:

s1, blanking, cutting the blank into rod-shaped blanks;

s2, heating the rod-shaped blank;

s3, flattening, namely flattening the heated rod-shaped blank;

s4, forming, namely placing the rod-shaped blank for hot forging and extrusion to form a profiling rod material;

s5, trimming, namely cutting the corners of the profiling bar stock to form a semi-finished product;

s6, carrying out solid solution treatment, namely heating the semi-finished product to fully dissolve the excess phase into the solid solution, and then rapidly cooling the solid solution in a cooling device (1) to obtain a supersaturated solid solution;

s7, cleaning and shot blasting, striking and grinding the surface of the semi-finished product, and removing oxide skin and rust;

s8, performing nondestructive inspection, and detecting whether defects or non-uniformity exist in the semi-finished product, wherein the semi-finished product is a finished product after the semi-finished product is qualified;

s9, surface passivation treatment, namely passivating the surface of the finished product;

s10, cleaning and packaging, namely cleaning and packaging the finished product for storage;

step S6 in cooling device (1) include box (11), the opening setting of box (11) is on the top surface of box (11), fixed mounting has atomizer (2) on box (11) inside wall, atomizer (2) are provided with at least three, the direction that atomizer (2) sprayed is towards box (11) center and slope downwards, the one end that box (11) inside wall was kept away from in each atomizer (2) all inclines towards the left side or the right side of atomizer (2), there is air-blast device (3) at box (11) inboard fixed mounting, air-blast device (3) are located the downside of atomizer (2), and from bottom to top to box (11) opening part air blast.

2. The forging process of the fuel common rail according to claim 1, wherein: blower device (3) be bladeless fan, the bladeless fan includes fan ring (31) and installs fan (32) on fan ring (31), fan ring (31) are located the below of atomizer (2), and the axis of fan ring (31) is vertical to be set up, fan ring (31) are hollow ring body, in the medial surface of fan ring (31), its diameter of keeping away from atomizer (2) one end is less than the diameter that is close to atomizer (2) one end, annular air outlet (311) have been seted up on the medial surface of fan ring (31), one side that atomizer (2) were kept away from along fan ring (31) in air outlet (311) sets up, and the opening of air outlet (311) upwards.

3. The forging process of the fuel common rail according to claim 2, wherein: the fan is characterized in that an annular groove (4) is fixedly arranged on the inner side wall of the fan ring (31), a rotating ring (41) with the same size as the annular groove (4) is embedded in the annular groove (4), the rotating ring (41) is rotatably arranged in the annular groove (4), the rotating axis of the rotating ring (41) is collinear with the axis of the fan ring (31), rotating fan blades (42) are fixedly arranged on the inner side wall of the rotating ring (41), at least three rotating fan blades (42) are arranged, and the distance between every two adjacent rotating fan blades (42) is equal; when the air outlet (311) blows air, the blown air pushes the rotating fan blades (42) and drives the rotating ring (41) to rotate.

4. The forging process of the fuel common rail according to claim 3, wherein: the medial surface of fan ring (31) on the fixed wind-guiding limit (5) that is provided with, the medial surface that fan ring (31) is followed in wind-guiding limit (5) is provided with the round, wind-guiding limit (5) are located the upside of air outlet (311), and be located the downside of ring channel (4), the transversal arch form of personally submitting of wind-guiding limit (5), fixed mounting has connecting block (51) and interception ring (52) on wind-guiding limit (5) are close to the side of fan ring (31) center department, connecting block (51) are provided with at least three and equidistant setting, the axis of interception ring (52) and the axis collineation of wind-guiding limit (5), and interception ring (52) simultaneously with each connecting block (51) fixed connection, there is the space at the interval between interception ring (52) and wind-guiding limit (5).

5. The forging process of the fuel common rail according to claim 3, wherein: the utility model discloses a fan, including swivel becket (41) inside wall on fixedly connected with guide strip (6), guide strip (6) one end is located directly over rotating fan blade (42), the other end of guide strip (6) is located swivel becket (41) upside, the part that guide strip (6) are located swivel becket (41) upside is the installation department, fixed mounting has elastic strip (61) on the installation department of guide strip (6), the inside wall butt of elastic strip (61) and fan ring (31).

6. The forging process of the fuel common rail according to claim 5, wherein: the upper ends of the guide bars (6) are inclined towards one side of the guide bars (6); and when the rotating ring (41) is driven to rotate by the air blown out from the air outlet (311), the upper end of the mounting part in the guide strip (6) inclines towards one side far away from the rotating direction of the guide strip.

7. The forging process of the fuel common rail according to claim 3, wherein: the rotating direction of the rotating ring (41) is opposite to the tangential direction of the water mist sprayed by the atomizing nozzle (2).

8. The forging process of the fuel common rail according to claim 2, wherein: the water receiving box is characterized in that a water outlet (111) is formed in the bottom surface of the box body (11), a water receiving box (112) is fixedly arranged on the lower side of the water outlet (111), the upper end of the water receiving box (112) is open, the open area of the water receiving box (112) is larger than that of the water outlet (111), a gap is formed between the upper end of the water receiving box (112) and the water outlet (111), and the lower end of the water receiving box (112) is connected with a water outlet pipe (113).

Technical Field

The invention relates to the technical field of fuel injection appliances, in particular to a forging process of a fuel common rail.

Background

The present common fuel rail is an important part in a fuel injection system, and the part is a typical special-shaped part, and a nozzle extends out from the part along a direction vertical to a long pipe, so that a nozzle part of the part is large in depth. It is relatively difficult to form during forging. In the conventional forging process, in order to fill the nozzle and the holder cavity with the full material, a round bar is usually subjected to two hot forging processes to extrude partial flash, and then the material is forced to flow into the nozzle and the holder cavity by using the friction force between the flash and the die, so as to be finally formed.

However, in the actual production process, because the part is a special-shaped part, solid solution treatment is required during forging, and during solid solution, the semi-finished product is heated to a high-temperature single-phase region and is kept at a constant temperature of 980-1250 ℃, so that the excess phase is fully dissolved in the solid solution and then is rapidly cooled, so as to obtain the supersaturated solid solution. It belongs to a preliminary heat treatment, and its role is to prepare the optimum conditions for the subsequent heat treatment. At present, when the semi-finished product is cooled rapidly, the semi-finished product is often required to be placed in a medium with low temperature. At present, a commonly used medium is water, and the fuel oil common rail is small in size, thin in wall thickness and easy to deform, and is usually cooled by adopting a rain mode. However, because the fuel common rail is provided with the nozzle part, the surface of the fuel common rail cannot be fully and uniformly sprayed and cooled in rain, so that uneven cooling is easy to occur, the fuel common rail is deformed or cracked on the surface, the probability of damage of the fuel common rail is high, and the production cost is increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the forging process of the fuel common rail, the fuel common rail is cooled more comprehensively, the phenomenon that the fuel common rail is deformed or cracked on the surface due to uneven cooling is not easy to occur, the probability of damage of the fuel common rail is effectively reduced, and the production cost is reduced.

The above object of the present invention is achieved by the following technical solutions:

a forging process of a fuel common rail comprises the following steps:

s1, blanking, cutting the blank into rod-shaped blanks;

s2, heating the rod-shaped blank;

s3, flattening, namely flattening the heated rod-shaped blank;

s4, forming, namely placing the rod-shaped blank for hot forging and extrusion to form a profiling rod material;

s5, trimming, namely cutting the corners of the profiling bar stock to form a semi-finished product;

s6, carrying out solid solution treatment, namely heating the semi-finished product to fully dissolve the excess phase into the solid solution, and then rapidly cooling the solid solution in a cooling device to obtain a supersaturated solid solution;

s7, cleaning and shot blasting, striking and grinding the surface of the semi-finished product, and removing oxide skin and rust;

s8, performing nondestructive inspection, and detecting whether defects or non-uniformity exist in the semi-finished product, wherein the semi-finished product is a finished product after the semi-finished product is qualified;

s9, surface passivation treatment, namely passivating the surface of the finished product;

s10, cleaning and packaging, namely cleaning and packaging the finished product for storage;

the cooling device in step S6 includes the box, the opening setting of box is on the top surface of box, fixed mounting has atomizer on the box inside wall, atomizer is provided with at least three, the direction that atomizer sprays is downward towards box center and slope, the one end that box inside wall was kept away from to each atomizer all inclines towards atomizer 'S left side or right side, there is air-blast device at the inboard fixed mounting of box, air-blast device is located atomizer' S downside, and from bottom to top to box opening part blast air.

By adopting the technical scheme, when the fuel common rail is subjected to solution treatment, the fuel common rail is not suitable for being directly placed in water for cooling because the volume of the fuel common rail is small. The high-temperature fuel common rail is moved to the upper side of the air blowing device and the lower side of the atomizing nozzle. Compared with the rain type cooling, the water drops sprayed by the atomizing nozzle are smaller, the atomizing nozzle can be in more comprehensive contact with the high-temperature fuel common rail, and the speed of cooling the fuel common rail is increased. When the atomizing nozzle sprays, a plurality of water drops fall below the fuel common rail without touching the fuel common rail. Because the water droplet that the atomizer spun is small, it can be blown by the wind that air-blast device bloated, and the water droplet that falls into the fuel and co-rail below can be with the position contact that the fuel co-rail did not spray to blow up the back to carry out more comprehensive cooling to the fuel co-rail, it is inhomogeneous not easy to appear cooling, lead to the fuel co-rail to appear warping or the phenomenon of surface fracture, effectively reduced the probability of fuel co-rail damage, reduced manufacturing cost. When the air blowing device blows air, the fuel common rail can be subjected to air cooling, the fuel common rail can be further cooled under the combination of the air cooling and the water cooling, and the cooling effect is better.

The present invention in a preferred example may be further configured to: the air blowing device is a bladeless fan, the bladeless fan comprises a fan ring and a fan arranged on the fan ring, the fan ring is located below the atomizing nozzle, the axis of the fan ring is vertically arranged, the fan ring is a hollow ring body, the diameter of one end of the fan ring, which is far away from the atomizing nozzle, is smaller than the diameter of one end of the atomizing nozzle, an annular air outlet is formed in the inner side of the fan ring, the air outlet is arranged along one side, which is far away from the atomizing nozzle, of the fan ring, and the opening of the air outlet is upward.

Through adopting above-mentioned technical scheme, the fan blows to fan ring inside, and later wind blows off from annular air outlet, because the gap of air outlet is less, and the wind speed that blows off from annular air outlet is higher, can drive the intra-annular air of fan and move towards the top together. The fan ring of bladeless fan is hollow, and partial water mist sprayed during the atomizing nozzle can easily pass through the fan ring and fall to the bottom of the box body, so that subsequent collection is facilitated. If a common fan is used, the rotating speed of the rotating fan blades is usually set to be faster in order to ensure that the fan can blow up the water drops of the atomizing nozzle. After water drops sprayed to the rotating fan blades are condensed into large water drops, the water drops are easily thrown out of the rotating fan blades under the action of centrifugal force and collide with the side wall of the box body, so that the water drops splash all the time, and when the splashed water drops collide with the fuel common rail, the phenomenon of uneven cooling of the fuel common rail is easily caused. And the bladeless fan is not easy to cause the phenomenon of water droplet splashing, and the sprayed water mist can be well contacted with the fuel common rail, so that the fuel common rail is cooled more uniformly.

The present invention in a preferred example may be further configured to: the fan comprises a fan ring, a fan blade, a rotating ring, a fan blade support, a fan blade support, a fan blade support and a fan blade, wherein the inner side wall of the fan ring is fixedly provided with an annular groove, the annular groove is embedded with the rotating ring with the same size as the annular groove, the rotating ring is rotatably arranged in; when the air outlet blows air, the blown air pushes the rotating fan blades and drives the rotating ring to rotate.

By adopting the technical scheme, the speed of the water mist sprayed by the atomizing nozzle and the speed of the wind blown by the fan ring cannot be accurately controlled, and the heights of the fuel oil common rails are not completely the same. If the air speed blown out by the fan ring is high, the water mist is blown out by the air blown out by the fan ring without falling to the lower part of the fuel common rail, so that the bottom of the fuel common rail cannot be cooled well. Because the air blown out by the fan ring is uniform, the rotating fan blades can shield part of the air blown out by the fan ring, so that part of water mist on the upper side of the rotating fan blades can fall down and can more easily fall to the lower side of the fuel common rail. The flabellum is because the slope sets up, and when wind blows to rotating fan blade, rotating fan blade can be promoted to rotate by wind, and the even wind that blocks the fan ring and bulge out makes atomizer spun water smoke drop earlier, later rotates the flabellum and rotates, and the water smoke that falls is blown up again, cools off fuel common rail bottom, and refrigerated effect is better.

The present invention in a preferred example may be further configured to: the medial surface of fan ring on the fixed wind-guiding limit that is provided with, the medial surface of wind-guiding border fan ring is provided with the round, the wind-guiding limit is located the upside of air outlet, and be located the downside of ring channel, the transversal bow-shaped of personally submitting on wind-guiding limit, fixed mounting has connecting block and interception ring on the side that the wind-guiding limit is close to fan ring center department, the connecting block is provided with at least three and equidistant setting, the axis on interception ring and the axis collineation on wind-guiding limit, and the interception ring simultaneously with each connecting block fixed connection, there is the space at the interval between interception ring and the wind-guiding limit.

By adopting the technical scheme, when wind blows out from the air outlet, the cross section of the wind guide edge is arched, and gaps are formed between the interception ring and the wind guide edge, so that the wind is not influenced to blow out from the air outlet normally. When the water drops sprayed by the atomizing nozzle fall onto the fan ring, the water drops are gradually condensed, and the water drops on the inner side surface of the fan ring flow down after being condensed to a certain size. Because the interval space between interception ring and the wind-guiding limit is very little, after the drop of water flows to between interception ring and the wind-guiding limit, can contact with interception ring and wind-guiding limit simultaneously, be difficult for directly flowing down. And under the blowing of the air blown out from the air outlet, the water drops can be easily blown away and are not easy to directly flow into the air outlet. The probability of the phenomenon of water accumulation inside the fan ring is reduced, and the fan ring can normally blow air out.

The present invention in a preferred example may be further configured to: the rotating ring inside wall on fixedly connected with guide strip, guide strip one end is located and rotates the flabellum directly over, the other end of guide strip is located the rotating ring upside, the part that the guide strip is located the rotating ring upside is the installation department, fixed mounting has the elasticity strip on the installation department of guide strip, the inside wall butt of elasticity strip and fan ring.

Through adopting above-mentioned technical scheme, at the rotating ring pivoted in-process, the elastic strip on the guide strip scrapes the inside wall of fan ring, can scrape the drop of water of condensing on the fan ring inside wall down to guide to rotating fan blade on, the further reduction appears the fan ring inside wall drop of water of condensing, leads to the probability of the interior phenomenon of drop of water direct inflow air outlet. The probability of the phenomenon of water accumulation inside the fan ring is reduced, and the fan ring can normally blow air out.

The present invention in a preferred example may be further configured to: the upper ends of the guide strips are inclined towards one side of the guide strips; and when the rotating ring is driven to rotate by the air blown out from the air outlet, the upper end of the mounting part in the guide strip inclines towards one side of the mounting part far away from the rotating direction of the guide strip.

Through adopting above-mentioned technical scheme, with the slope setting of guide strip, when the rotating ring pivoted, the one end that the rotating ring was kept away from to the elasticity strip on the guide strip inclines towards the opposite direction. It can be fine when the rotating ring rotates scrape the drop of water on the fan ring inner wall down.

The present invention in a preferred example may be further configured to: the rotating direction of the rotating ring is opposite to the tangential direction of the water mist sprayed by the atomizing spray head.

Through adopting above-mentioned technical scheme, because atomizer is equidistant setting on the inside wall of box, and atomizer all moves towards with same one side left side or right side slope, atomizer sprays out the water smoke have with the tangent initial velocity of box inside wall, towards the initial velocity and the decurrent initial velocity of box center department. When the rotating ring rotates, the wind blown out by the fan ring is blocked, so that the wind is spirally sent out of the fan ring, and the rotating direction of the wind when the wind is sent out is opposite to the rotating direction of the rotating ring, namely the wind is the same as the tangential direction of the water mist sprayed by the atomizing nozzle. The water mist at the spraying position of the atomizing nozzle can rotate in the box body more easily, so that the water mist can be sprayed to the position, on the fuel common rail, of the fuel common rail, the water mist is not easy to spray, and the cooling effect is better.

The present invention in a preferred example may be further configured to: the water receiving tank is characterized in that a water outlet is formed in the bottom surface of the tank body, a water receiving tank is fixedly arranged on the lower side of the water outlet, the upper end of the water receiving tank is provided with an opening, the area of the opening of the water receiving tank is larger than that of the water outlet, a gap is formed between the upper end of the water receiving tank and the water outlet, and the lower end of the water receiving tank is connected with a water discharging pipe.

By adopting the technical scheme, the water outlet on the bottom surface of the box body is not only used for draining water, but also used for flowing air into the box body, so that the air quantity is more stable when the fan ring blows air. The water in the box body flows into the water receiving box after flowing out of the water outlet and is discharged through the water discharging pipe, so that the water is convenient to recycle.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the fuel common rail is cooled more comprehensively, so that the phenomenon of deformation or surface cracking of the fuel common rail due to uneven cooling is avoided, the probability of damage of the fuel common rail is effectively reduced, and the production cost is reduced;

2. the probability of the phenomenon of water accumulation inside the fan ring is reduced, and the fan ring can normally blow air out.

Drawings

Fig. 1 is a flowchart of the present embodiment.

Fig. 2 is a schematic view of the structure of the cooling device.

Fig. 3 is a schematic structural view after a part of the box body is hidden.

FIG. 4 is a schematic view of the structure with portions of the housing and portions of the cooling ring hidden.

FIG. 5 is a partially enlarged schematic view of portion A of FIG. 4

In the figure, 1, a cooling device; 11. a box body; 111. a water outlet; 112. a water receiving tank; 113. a drain pipe; 2. an atomizing spray head; 3. a blower device; 31. a fan ring; 311. an air outlet; 32. a fan; 321. a housing; 322. a fan motor; 4. an annular groove; 41. a rotating ring; 42. rotating the fan blades; 5. wind guiding edges; 51. connecting blocks; 52. an interception ring; 6. a guide strip; 61. an elastic strip.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the forging process of the fuel common rail disclosed by the invention comprises the following steps:

s1, blanking, cutting the massive blank by a sawing machine, and cutting into a rod-shaped blank easy to process;

s2, heating, namely, placing the rodlike blank in a 350KW medium-frequency induction furnace for heating;

s3, flattening, namely placing the heated rod-shaped blank in a J21-250T open press to flatten;

s4, forming, namely placing the rod-shaped blank in an electric screw press for hot forging and extrusion to form a profiling rod with a first bulge, a second bulge and a transition region;

s5, cutting edges, namely cutting the edges of the profiling bar stock through a J21-250T open press to enable the profiling bar stock to form a semi-finished product;

s6, carrying out solid solution treatment, namely heating the semi-finished product to a high-temperature single-phase region for keeping the temperature constant, and quickly cooling the semi-finished product in a cooling device 1 after the excess phase is fully dissolved into the solid solution to obtain a supersaturated solid solution;

s7, cleaning shot blasting, namely, shooting the grinding materials to the surface of the processed semi-finished product at a high linear velocity through a crawler type shot blasting machine to generate striking and grinding effects, removing oxide skins and corrosion and generating certain roughness;

s8, nondestructive inspection, wherein, fluorescent penetrant inspection is used to detect whether defects or non-uniformity exist in the semi-finished product, and the semi-finished product is a finished product after being qualified;

s9, surface passivation treatment, namely passivating the surface of the finished product to ensure that the chemical property of the finished product tends to be stable;

s10, cleaning and packaging, namely cleaning and packaging the finished product for storage;

referring to fig. 2, the cooling device 1 in step S6 includes a cylindrical case 11, and an opening of the case 11 is provided on a top surface of the case 11. Fixed mounting has four atomizer 2 that highly equals on the 11 inside walls of box, and four atomizer 2 equidistant settings, atomizer 2 are located the upper end department of box 11. One end of the atomizing spray heads 2 far away from the inner side wall of the box body 11 inclines downwards towards the center of the box body 11, and one end of each atomizing spray head 2 far away from the inner side wall of the box body 11 inclines towards the same side of the atomizing spray heads 2. When viewed from the top surface of the box body 11 to the bottom surface of the box body 11, the spraying directions of the four atomizing nozzles 2 are anticlockwise. The water drops sprayed by the atomizing nozzle 2 are smaller, and can be in more comprehensive contact with the high-temperature fuel common rail, so that the cooling speed of the fuel common rail is increased. The bottom surface of the box body 11 is funnel-shaped, and a water outlet 111 is formed at the center of the bottom surface of the box body 11. A water receiving tank 112 is fixedly mounted on the lower side of the box body 11, an opening is formed in the upper end of the water receiving tank 112, the water receiving tank 112 is located right below the water outlet 111, the area of the opening of the water receiving tank 112 is larger than that of the water outlet 111, and a water outlet pipe 113 is connected to the lower end of the water receiving tank 112. The water in the tank 11 flows out of the water outlet 111, flows into the water receiving tank 112, and is discharged through the water discharge pipe 113, so that the water can be recovered and recycled.

Referring to fig. 3 and 4, the blowing device 3 is fixedly installed in the casing 11, the blowing device 3 is a bladeless fan, and the bladeless fan includes a fan ring 31 and a fan 32 installed on the fan ring 31. The axis of the fan ring 31 is vertically arranged, and the outer side wall of the fan ring 31 is fixedly connected with the inner side wall of the box body 11. The fan ring 31 is a hollow structure, and as shown in fig. 5, in the cross section of the fan ring 31, the width of the middle portion of the fan ring 31 is greater than the widths of the upper end and the lower end of the fan ring 31, the distance between the widest width portion of the fan ring 31 and the upper end of the fan ring 31 is greater than the distance between the widest width portion of the fan ring 31 and the lower end of the fan ring 31, an air outlet 311 is formed at the lower end of the fan ring 31, the air outlet 311 is annular and is formed on the inner side surface of the fan ring 31, and the axis of the air outlet 311 is collinear with the axis of the fan ring. The blower 32 includes a cylindrical housing 321 and a fan motor 322, the housing 321 penetrates through a sidewall of the box 11, one end of the housing 321 is fixedly connected to an outer sidewall of the fan ring 31, the fan motor 322 is fixedly connected to the other end of the housing 321, and the fan motor 322 can blow air into the fan ring 31. The fan ring 31 of the bladeless fan is hollow, and water mist sprayed by the atomizing nozzle 2 can easily penetrate through the fan ring 31 and fall to the bottom end of the box body 11, so that subsequent collection is facilitated. Because the water droplet that atomizer 2 spun is small, it can be blown by the wind that air-blast device 3 bloated, and the water droplet that falls into the fuel rail below can contact with the position that the fuel rail did not spray to the fuel rail after being blown up to carry out more comprehensive cooling to the fuel rail, it is inhomogeneous not easy to appear cooling, lead to the fuel rail to appear warping or the phenomenon of surface fracture, effectively reduced the probability of fuel rail damage, reduced manufacturing cost.

Referring to fig. 4 and 5, an annular groove 4 is formed in the inner wall of the fan ring 31, and the axis of the annular groove 4 is collinear with the axis of the fan ring 31. A rotating ring 41 is installed in the annular groove 4, the axis of the rotating ring 41 is collinear with the axis of the annular groove 4, and the rotating ring 41 can rotate along the annular groove 4. Four rotating blades 42 are welded on the inner side wall of the rotating ring 41 at equal intervals, and when the air outlet 311 blows air, the air blown out from the air outlet 311 pushes the rotating blades 42 and drives the rotating ring 41 to rotate, and the rotating ring 41 rotates clockwise. The air blown out by the fan ring 31 is uniform, and the rotating fan blades 42 can shield part of the air blown out by the fan ring 31, so that part of water mist on the upper side of the rotating fan blades 42 can fall down and can more easily fall to the lower side of the fuel common rail. Because the rotating fan blades 42 are obliquely arranged, when wind blows to the rotating fan blades 42, the rotating fan blades 42 can be pushed to rotate by the wind, the wind blown out by the fan ring 31 is uniformly blocked, the water mist sprayed out by the atomizing spray head 2 falls off firstly, then the rotating fan blades 42 rotate, the falling water mist is blown off again, the bottom of the fuel common rail is cooled, and the cooling effect is better.

Referring to fig. 4 and 5, the inner side surface of the rotating ring 41 is integrally formed with the air guiding edge 5, the air guiding edge 5 is provided in a circle along the inner side surface of the fan ring 31, and the cross section of the air guiding edge 5 is arcuate. The air guiding edge 5 is arranged on the upper side of the air outlet 311 and is positioned on the lower side of the annular groove 4. The inner side surface of the air guide edge 5 is integrally formed with connecting blocks 51, and at least three connecting blocks 51 are arranged at equal intervals along the air guide edge 5. An intercepting ring 52 is further welded on the air guide edge 5, and the axis of the intercepting ring 52 is collinear with the axis of the air guide edge 5. The outer side surface of the interception ring 52 is welded with one end of each connecting block 51 far away from the air guide edge 5, and a gap is formed between the outer side surface of the interception ring 52 and the air guide edge 5. A guide bar 6 is fixedly connected to an inner side wall of the rotary ring 41, and one end of the guide bar 6 is located right above the rotary fan blades 42 and is a lower end of the guide bar 6. The upper end of the guide bar 6 is positioned at the upper side of the rotary ring 41 and adjacent to the fan ring 31. The guide bar 6 is mounted on the upper side of the rotating ring 41, the upper ends of the mounting portions of the guide bar 6 are inclined toward the same side, and the guide bar 6 is inclined counterclockwise when viewed from the top surface of the case 11 to the bottom surface of the case 11. An elastic strip 61 is fixedly attached to the attachment portion of the guide strip 6, and the elastic strip 61 abuts against the inner wall of the fan ring 31. Because the gap between the interception ring 52 and the wind guiding edge 5 is small, when the water drops flow between the interception ring 52 and the wind guiding edge 5, the water drops can contact with the interception ring 52 and the wind guiding edge 5 at the same time, and are not easy to flow down directly. And under the blowing of the air blown out from the air outlet 311, the water drops can be easily blown away, and are not easy to directly flow into the air outlet 311. In the process that the rotating ring 41 rotates, the elastic strip 61 on the guide strip 6 scrapes the inner side wall of the fan ring 31, so that water drops condensed on the inner side wall of the fan ring 31 can be scraped and guided to the rotating fan blades 42, and the probability of the phenomenon that the water drops directly flow into the air outlet 311 due to the condensed water drops on the inner side wall of the fan ring 31 is further reduced. The probability of water accumulation inside the fan ring 31 is effectively reduced, and the fan ring 31 can normally blow air.

When the fuel common rail is subjected to solution treatment, the fuel common rail is not suitable for being directly placed in water for cooling because the volume of the fuel common rail is small. The high-temperature fuel common rail is moved to the upper side of the blower 3 and the lower side of the atomizer head 2. Compared with the rain type cooling, the water drops sprayed by the atomizing nozzle 2 are smaller, and can be in more comprehensive contact with the high-temperature fuel common rail, so that the speed of cooling the fuel common rail is increased. When the atomizer 2 sprays, many water drops fall below the fuel common rail without touching the fuel common rail. Because the water droplet that atomizer 2 spun is small, it can be blown by the wind that air-blast device 3 bloated, and the water droplet that falls into the fuel rail below can contact with the position that the fuel rail did not spray to the fuel rail after being blown up to carry out more comprehensive cooling to the fuel rail, it is inhomogeneous not easy to appear cooling, lead to the fuel rail to appear warping or the phenomenon of surface fracture, effectively reduced the probability of fuel rail damage, reduced manufacturing cost. When the air blowing device 3 blows air, the fuel common rail can be subjected to air cooling, and under the combination of the air cooling and the water cooling, the fuel common rail can be further cooled, so that the cooling effect is better.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.