阅读说明：本技术 一种高密封高耐磨柱塞套 (High-sealing high-wear-resistance plunger sleeve ) 是由 胡燚 于 2021-01-18 设计创作，主要内容包括：本发明公开了一种高密封高耐磨柱塞套,包括套体、法兰盘、安装孔、喷油孔、柱塞孔、通孔、进油孔、密封槽、卡槽、第一密封圈、凸块、安装槽、橡胶气囊、进气孔、打气嘴、单向阀、润滑油孔、第二密封圈、安装杆、第一弹簧、封堵球、第二弹簧、橡胶块和中心孔,所述套体的上端的外侧一体式设有法兰盘,所述法兰盘的上部均匀开设有多个贯穿法兰盘的安装孔,所述套体的上端的中心位置开设有喷油孔,所述套体的下端的中心位置开设有柱塞孔,所述喷油孔与柱塞孔之间开设有通孔,所述通孔的上端与喷油孔的下端相通,与现有技术相比,能够显著提升柱塞套的密封性和耐磨性,提升了柱塞套的工作性能,延长了柱塞套的使用寿命。(The invention discloses a high-sealing high-wear-resistance plunger sleeve, which comprises a sleeve body, a flange plate, a mounting hole, an oil injection hole, a plunger hole, a through hole, an oil inlet hole, a sealing groove, a clamping groove, a first sealing ring, a convex block, a mounting groove, a rubber air bag, an air inlet hole, an inflating valve, a one-way valve, a lubricating oil hole, a second sealing ring, a mounting rod, a first spring, a plugging ball, a second spring, a rubber block and a central hole, wherein the flange plate is integrally arranged on the outer side of the upper end of the sleeve body, the upper part of the flange plate is uniformly provided with a plurality of mounting holes penetrating through the flange plate, the central position of the upper end of the sleeve body is provided with the oil injection hole, the central position of the lower end of the sleeve body is provided with the plunger hole, the through hole is formed between the oil injection hole and the plunger hole, the working performance of the plunger sleeve is improved, and the service life of the plunger sleeve is prolonged.)

1. The utility model provides a high sealed high wear resistant plunger bushing which characterized in that: comprises a sleeve body (1), a flange plate (2), mounting holes (3), oil injection holes (4), plunger holes (5), a through hole (6), an oil inlet hole (7), a sealing groove (8), a clamping groove (9), a first sealing ring (10), a convex block (11), a mounting groove (12), a rubber air bag (13), an air inlet hole (14), an inflating valve (15), a check valve (16), a lubricating oil hole (17), a second sealing ring (18), a mounting rod (19), a first spring (20), a plugging ball (21), a second spring (22), a rubber block (23) and a central hole (24), wherein the flange plate (2) is integrally arranged on the outer side of the upper end of the sleeve body (1), the mounting holes (3) penetrating through the flange plate (2) are uniformly formed in the upper part of the flange plate (2), and the oil injection holes (4) are formed in the central position of the upper end of the sleeve, a plunger hole (5) is formed in the center of the lower end of the sleeve body (1), a through hole (6) is formed between the oil injection hole (4) and the plunger hole (5), the upper end of the through hole (6) is communicated with the lower end of the oil injection hole (4), the lower end of the through hole (6) is communicated with the upper end of the plunger hole (5), the aperture of the through hole (6) is smaller than that of the oil injection hole (4), the aperture of the oil injection hole (4) is smaller than that of the plunger hole (5), the oil injection hole (4), the through hole (6) and the plunger hole (5) are coaxially arranged, an oil inlet hole (7) communicated with the outer side part of the sleeve body (1) is formed in the inner wall of the plunger hole (5), the axis of the oil inlet hole (7) is perpendicular to the axis of the plunger hole (5), an annular sealing groove (8) is formed in the outer side part of the sleeve body (1), and clamping grooves (9) are formed in the upper, the notches of the two clamping grooves (9) are right opposite, a first sealing ring (10) is arranged in the sealing groove (8), the upper side portion and the lower side portion of the first sealing ring (10) are integrally provided with an annular bump (11) correspondingly, the two bumps (11) are arranged in the two clamping grooves (9) correspondingly, an annular mounting groove (12) is formed in one surface of the first sealing ring (10) facing the axis of the sleeve body (1), an annular rubber air bag (13) is arranged in the mounting groove (12), a J-shaped air inlet hole (14) is formed in the outer side portion of the sleeve body (1), the inner end of the air inlet hole (14) is communicated with the groove bottom of the sealing groove (8), an air nozzle (15) communicated with the rubber air bag (13) is fixedly arranged outside the rubber air bag (13), the air nozzle (15) is communicated with the inner end of the air inlet hole (14), a one-way valve (16) is arranged in the, the outer side part of the sleeve body (1) is provided with a lubricating oil hole (17) communicated with the inner side wall of the plunger hole (5), the axis of the lubricating oil hole (17) is perpendicular to the axis of the plunger hole (5), the inner side of the outer end of the lubricating oil hole (17) is fixedly provided with an annular second sealing ring (18), the inner part of the lubricating oil hole (17) is fixedly provided with an installation rod (19) which is distributed along the radial direction of the lubricating oil hole (17), one side of the installation rod (19) facing the outer end of the lubricating oil hole (17) is provided with a first spring (20), the first spring (20) and the lubricating oil hole (17) are coaxially arranged, one end of the first spring (20) is fixedly connected with the installation rod (19), the other end of the first spring is fixedly provided with a blocking ball (21), the diameter of the blocking ball (21) is smaller than the aperture of the lubricating oil hole (17), and the central position of the blocking ball (21) is abutted against the central position, the diameter of shutoff ball (21) is a bit bigger than the diameter of the center circle of second sealing washer (18), installation pole (19) are equipped with second spring (22) towards one side of the inner of lubrication oil hole (17), second spring (22) and lubrication oil hole (17) coaxial setting, pole (19) fixed connection is installed to the one end of second spring (22), and the other end is fixed and is equipped with columniform rubber block (23), rubber block (23) and lubrication oil hole (17) axial seal sliding fit, the central point of the terminal surface of rubber block (23) puts and sets up centre bore (24) that run through the both ends of rubber block (23).

2. The high-sealing high-wear-resistance plunger sleeve according to claim 1, wherein: the outer end of the oil inlet hole (7) is designed in a wide-mouth mode.

3. The high-sealing high-wear-resistance plunger sleeve according to claim 1, wherein: the width of the first sealing ring (10) is slightly larger than that of the sealing groove (8).

4. The high-sealing high-wear-resistance plunger sleeve according to claim 1, wherein: and the connecting part of the second sealing ring (18) and the lubricating oil hole (17) is designed in a sealing manner.

5. The high-sealing high-wear-resistance plunger sleeve according to claim 1, wherein: the rubber block (23) is made of wear-resistant and high-temperature-resistant materials.

6. The high-sealing high-wear-resistance plunger sleeve according to claim 1, wherein: the end of the central bore (24) facing the second spring (22) is of a wide-mouthed design.

7. A high-sealing high-wear-resistance plunger sleeve according to any one of claims 1 to 6, wherein: the first sealing ring (10), the bump (11) and the rubber air bag (13) are all made of high-temperature-resistant rubber materials.

[ technical field ] A method for producing a semiconductor device

The invention relates to the technical field of automobile parts, in particular to a high-sealing high-wear-resistance plunger sleeve.

[ background of the invention ]

The plunger sleeve is a sleeve outside the plunger in the fuel injection pump of the engine. The plunger and barrel of the fuel injection pump is one of three precise parts of diesel engine fuel system, and the plunger reciprocates in the plunger and barrel at high speed under the action of the cam of the fuel pump to pressurize fuel to certain pressure and start to press or drain fuel in set time. The oil supply system of the diesel engine is called a high-pressure oil pump and a fuel injector. The power comes from the engine itself. The oil suction and pressing of the injection pump are completed by the reciprocating motion of the plunger in the plunger sleeve. When the plunger is positioned at the lower part, two oil holes on the plunger sleeve are opened, the inner cavity of the plunger sleeve is communicated with an oil duct in the pump body, and fuel oil is quickly filled in the oil chamber. Be equipped with seal structure between current plunger bushing and injection pump, only an oil groove on the current plunger bushing body, sealed effect is not good. In addition, because the plunger and the plunger sleeve rub against each other for a long time and lubrication oil lubrication between the plunger and the plunger sleeve is lacked, the plunger sleeve is excessively worn and the service life is shortened, and therefore improvement is needed.

[ summary of the invention ]

The invention aims to solve the problems in the prior art and provides a high-sealing high-wear-resistance plunger sleeve.

In order to achieve the purpose, the invention provides a high-sealing high-wear-resistance plunger sleeve, which comprises a sleeve body, a flange plate, a mounting hole, an oil injection hole, a plunger hole, a through hole, an oil inlet hole, a sealing groove, a clamping groove, a first sealing ring, a convex block, a mounting groove, a rubber air bag, an air inlet hole, an inflating valve, a one-way valve, a lubricating oil hole, a second sealing ring, a mounting rod, a first spring, a plugging ball, a second spring, a rubber block and a central hole, wherein the flange plate is integrally arranged on the outer side of the upper end of the sleeve body, the upper part of the flange plate is uniformly provided with a plurality of mounting holes penetrating through the flange plate, the central position of the upper end of the sleeve body is provided with the oil injection hole, the central position of the lower end of the sleeve body is provided with the plunger hole, the through hole is formed between, the aperture of the through hole is smaller than that of the oil spray hole, the aperture of the oil spray hole is smaller than that of the plunger hole, the oil spray hole, the through hole and the plunger hole are coaxially arranged, the inner wall of the plunger hole is provided with an oil inlet hole communicated with the outer side part of the sleeve body, the axis of the oil inlet hole is mutually vertical to that of the plunger hole, the outer side part of the sleeve body is provided with an annular sealing groove, the upper side wall and the lower side wall of the sealing groove are respectively provided with a clamping groove, the notches of the two clamping grooves are opposite, a first sealing ring is arranged in the sealing groove, the upper side part and the lower side part of the first sealing ring are respectively and integrally provided with an annular convex block, the two convex blocks are correspondingly clamped in the two clamping grooves, one surface of the first sealing ring, facing the axis of the sleeve body, is provided with an annular mounting groove, an, the inner end of the air inlet hole is communicated with the groove bottom of the sealing groove, the outer portion of the rubber air bag is fixedly provided with an inflating valve communicated with the rubber air bag, the inflating valve is communicated with the inner end of the air inlet hole, a one-way valve is arranged in the air inlet hole, the outer side portion of the sleeve body is provided with a lubricating oil hole communicated with the inner side wall of the plunger hole, the axis of the lubricating oil hole is perpendicular to the axis of the plunger hole, the inner side of the outer end of the lubricating oil hole is fixedly provided with an annular second sealing ring, the inner portion of the lubricating oil hole is fixedly provided with an installation rod distributed along the radial direction of the lubricating oil hole, one side of the installation rod facing the outer end of the lubricating oil hole is provided with a first spring, the first spring is coaxial with the lubricating oil hole, one end of the first spring is fixedly connected with the installation rod, the, the butt is put with the central point of second sealing washer to the shutoff ball, the diameter of shutoff ball is a bit bigger than the diameter of the central circle of second sealing washer, the installation pole is equipped with the second spring towards one side of the inner of lubrication oil hole, the second spring sets up with the lubrication oil hole is coaxial, pole fixed connection is installed to the one end of second spring, and the other end is fixed and is equipped with columniform block rubber, block rubber and lubrication oil hole axial seal sliding fit, the central point of the terminal surface of block rubber puts the centre bore of offering the both ends that run through the block rubber.

Preferably, the outer end of the oil inlet hole is designed in a wide-mouth manner.

Preferably, the width of the first sealing ring is slightly larger than that of the sealing groove.

Preferably, the connection part of the second sealing ring and the lubricating oil hole is of a sealing design.

Preferably, the rubber block is made of wear-resistant and high-temperature-resistant materials.

Preferably, the end of the central bore facing the second spring is of a wide-mouthed design.

Preferably, the first sealing ring, the bump and the rubber air bag are all made of high-temperature resistant rubber materials.

The invention has the beneficial effects that: the invention is characterized in that an annular sealing groove is arranged at the outer side part of a sleeve body, clamping grooves are respectively arranged on the upper side wall and the lower side wall of the sealing groove, a first sealing ring is arranged in the sealing groove, annular convex blocks are respectively integrally arranged on the upper side part and the lower side part of the first sealing ring, the two convex blocks are correspondingly clamped in the two clamping grooves, an annular mounting groove is arranged on one surface of the first sealing ring facing to the axis of the sleeve body, an annular rubber air bag is arranged in the mounting groove, a J-shaped air inlet hole is arranged at the outer side part of the sleeve body, the inner end of the air inlet hole is communicated with the groove bottom of the sealing groove, an inflating valve communicated with the inner end of the rubber air bag is fixedly arranged outside the rubber air bag, a one-way valve is arranged in the air inlet hole, after the plunger sleeve is mounted, air can, the rubber air bag is inflated to expand so that the first sealing ring is expanded, the expanded first sealing ring has a better sealing effect, due to the arrangement of the one-way valve, even if the inflating valve does not have an air closing function, the one-way valve can prevent gas in the rubber air bag from flowing back to the outside through the air inlet hole, the outer side part of the sleeve body is provided with a lubricating oil hole communicated with the inner side wall of the plunger hole, the inner side of the outer end of the lubricating oil hole is fixedly provided with an annular second sealing ring, the lubricating oil hole is internally and fixedly provided with mounting rods distributed along the radial direction of the lubricating oil hole, one side of the mounting rods facing the outer end of the lubricating oil hole is provided with a first spring, one end of the first spring is fixedly connected with the mounting rods, the other end of the first spring is fixedly provided with a blocking ball, the blocking ball is abutted against the central position of the second sealing ring, the diameter of the blocking ball is slightly larger than, the one end installation pole fixed connection of second spring, the fixed columniform block rubber that is equipped with in other end, the central point of the terminal surface of block rubber puts the centre bore of seting up the both ends that run through the block rubber, when needs are to the downthehole injection lubricating oil of lubricating oil, can directly push away the shutoff ball with the head of syringe and make shutoff ball and second sealing washer separation, then make the shutoff ball top tightly in the central circle of second sealing washer under the spring action of first spring again, it is downthehole that lubricating oil in the lubricating oil passes through the centre bore of block rubber and enters into the plunger, lubricating oil gives plunger hole and plunger lubrication, lubricity between plunger hole and the plunger has been promoted, the anti friction ability of plunger cover has been promoted, compared with the prior art, can show leakproofness and the wearability that promotes the plunger cover, the working property of plunger cover has been promoted, the life of plunger cover has been prolonged.

The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic structural diagram of a high-sealing high-wear-resistance plunger sleeve according to the invention.

In the figure: 1-sleeve body, 2-flange plate, 3-mounting hole, 4-oil injection hole, 5-plunger hole, 6-through hole, 7-oil inlet hole, 8-sealing groove, 9-clamping groove, 10-first sealing ring, 11-bump, 12-mounting groove, 13-rubber air bag, 14-air inlet hole, 15-inflating nozzle, 16-one-way valve, 17-lubricating oil hole, 18-second sealing ring, 19-mounting rod, 20-first spring, 21-blocking ball, 22-second spring, 23-rubber block and 24-center hole.

[ detailed description ] embodiments

Referring to fig. 1, the invention relates to a high-sealing high-wear-resistance plunger sleeve, which comprises a sleeve body 1, a flange plate 2, a mounting hole 3, an oil spray hole 4, a plunger hole 5, a through hole 6, an oil inlet hole 7, a sealing groove 8, a clamping groove 9, a first sealing ring 10, a convex block 11, a mounting groove 12, a rubber air bag 13, an air inlet 14, an inflating nozzle 15, a check valve 16, a lubricating oil hole 17, a second sealing ring 18, a mounting rod 19, a first spring 20, a blocking ball 21, a second spring 22, a rubber block 23 and a central hole 24, wherein the flange plate 2 is integrally arranged on the outer side of the upper end of the sleeve body 1, a plurality of mounting holes 3 penetrating through the flange plate 2 are uniformly formed in the upper part of the flange plate 2, the oil spray hole 4 is formed in the central position of the upper end of the sleeve body 1, the plunger hole 5 is formed in, the upper end of the through hole 6 is communicated with the lower end of the oil spray hole 4, the lower end of the through hole 6 is communicated with the upper end of the plunger hole 5, the aperture of the through hole 6 is smaller than that of the oil spray hole 4, the aperture of the oil spray hole 4 is smaller than that of the plunger hole 5, the oil spray hole 4, the through hole 6 and the plunger hole 5 are coaxially arranged, an oil inlet 7 communicated with the outer side part of the sleeve body 1 is arranged on the inner wall of the plunger hole 5, the axis of the oil inlet 7 is perpendicular to the axis of the plunger hole 5, the outer side part of the sleeve body 1 is provided with an annular sealing groove 8, the upper side wall and the lower side wall of the sealing groove 8 are respectively provided with a clamping groove 9, the notches of the two clamping grooves 9 are opposite, a first sealing ring 10 is arranged in the sealing groove 8, annular convex blocks 11 are uniformly arranged on the upper side part and the lower side part of the, an annular mounting groove 12 is formed in one surface, facing the axis of the sleeve body 1, of the first sealing ring 10, an annular rubber air bag 13 is arranged in the mounting groove 12, a J-shaped air inlet 14 is formed in the outer side portion of the sleeve body 1, the inner end of the air inlet 14 is communicated with the bottom of the sealing groove 8, an inflating nozzle 15 communicated with the rubber air bag 13 is fixedly arranged outside the rubber air bag 13, the inflating nozzle 15 is communicated with the inner end of the air inlet 14, a one-way valve 16 is arranged in the air inlet 14, a lubricating oil hole 17 communicated with the inner side wall of the plunger hole 5 is formed in the outer side portion of the sleeve body 1, the axis of the lubricating oil hole 17 is perpendicular to the axis of the plunger hole 5, an annular second sealing ring 18 is fixedly arranged on the inner side of the outer end of the lubricating oil hole 17, and mounting rods 19 distributed in the radial direction of the lubricating, the one side of installation pole 19 towards the outer end of lubrication oil hole 17 is equipped with first spring 20, first spring 20 and the coaxial setting of lubrication oil hole 17, the one end and the installation pole 19 fixed connection of first spring 20, the other end is fixed and is equipped with shutoff ball 21, the diameter of shutoff ball 21 is less than the aperture of lubrication oil hole 17, the central point of shutoff ball 21 and second sealing washer 18 puts the butt, the diameter of shutoff ball 21 is a bit bigger than the diameter of the center circle of second sealing washer 18, the one side of installation pole 19 towards the inner of lubrication oil hole 17 is equipped with second spring 22, second spring 22 and the coaxial setting of lubrication oil hole 17, 19 fixed connection is installed to the one end of second spring 22, the fixed columniform block rubber 23 that is equipped with to the other end, block rubber 23 and lubrication oil hole 17 axial seal sliding fit, the central point of the terminal surface of block 23 puts the centre bore 24 that runs through the both ends of block rubber 23, the outer end of inlet port 7 is the wide-mouthed design, the width of first sealing washer 10 slightly is greater than the width of seal groove 8, second sealing washer 18 is the sealed design with the connecting portion of lubricant duct 17, block rubber 23 is made by wear-resisting high temperature resistant material, centre bore 24 is the wide-mouthed design towards the one end of second spring 22, first sealing washer 10, lug 11 and rubber air bag 13 are made by high temperature resistant rubber material.

The working process of the invention is as follows: after the plunger bushing is installed, an air cylinder can be used for inflating the air inlet hole 14, air enters the inflating valve 15 through the air inlet hole 14 and then enters the rubber air bag 13, the rubber air bag 13 is inflated and expanded to enable the first sealing ring 10 to expand, the expanded first sealing ring 10 is better in sealing effect, due to the fact that the one-way valve 16 is arranged, even if the inflating valve 15 does not have an air closing function, the one-way valve 16 can prevent the air in the rubber air bag 13 from flowing back to the outside through the air inlet hole 14, when lubricating oil needs to be injected into the lubricating oil hole 17, the head of the injector can be directly used for pushing the blocking ball 21 away to enable the blocking ball 21 to be separated from the second sealing ring 18, then the blocking ball 21 is tightly propped against the central ring of the second sealing ring 18 under the elastic force of the first spring 20, the outer end of the lubricating oil hole 17 is sealed, the lubricating oil in the lubricating oil hole 17 enters the plunger hole 5 through the central hole 24 of the rubber, lubricating oil gives plunger hole 5 and plunger lubrication, has promoted the lubricity between plunger hole 5 and the plunger, has promoted the antifriction ability of plunger bushing, compares with prior art, can show the leakproofness and the wearability that promote the plunger bushing, has promoted the working property of plunger bushing, has prolonged the life of plunger bushing.

The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.