CN2432354Y - Filling assembly for reciprocating air compressor - Google Patents

Abstract

The utility model provides a stuffing assembly for a reciprocating air compressor, a stuffing box is formed at the bottom of a lower cylinder body (3); the stuffing box is provided with a back guide sleeve (4), a first stuffing case (8) in which an oil scraping ring (6) is placed, a flow stopping ring (9), a second stuffing case (12) in which a sealing ring (11) is placed, a front guide sleeve (15), and a stuffing press cover (14). The utility model is characterized in that the lower end of the back guide sleeve (4) is also provided with an oil cutting-oil discharging mechanism. The utility model can completely block the oil, causes an oil-free air compressor to really achieve oil-free lubrication and reach the requirement of environmental protection, can be used for manufacturing new machines, and is more convenient to reform the existing oil lubrication air compressor to the oil-free air compressor because no change is made on the other members of the original machine.

Description

The filler assembly of reciprocating compressor

The utility model relates to the filler assembly of reciprocating compressor, relates in particular to a kind of filler assembly of reciprocating type non-lubricated air compressor.

Traditional reciprocating air compressor all is that the oil lubrication air compressor is arranged, because it exists some to cover disease, therefore, has developed the oil-free lubrication reciprocating compressor in the last few years.The filler assembly of this non-lubricated air compressor is very complicated, generally adopts in the centre of original oil lubrication air compressor to add member, and piston body, cylinder body and piston rod are increased, and increases to the upright cylinder that makes unit, and the cylinder that crouches increases, and causes unit easily to shake, stability decreases.The filler assembly of this non-lubricated air compressor is used for having the transformation of oil lubrication air compressor also very complicated, and the pipeline of doing in the factory building is joined on the necessary part basis of changing again, the also necessary mobile fuselage that has, and this filler assembly function singleness is installed inconvenience.For this reason, Chinese patent ZL98216786.5 provides a kind of novel reciprocating compressor filler assembly, it simple in structure, easy for installation, can be used for the manufacturing of oil-free lubrication reciprocating air compressor, also can be transformed into the oil-free lubrication reciprocating air compressor with having had the oil lubrication reciprocating air compressor now easily.But this new packing assembly does not reach the purpose that real oil-free lubrication and pressurized air do not have oil fully also owing little end aspect the effusion of obstruct fluid.

The purpose of this utility model, be on the basis of above-mentioned new packing assembly, provide a kind of and can intercept fully that fluid enters cylinder on the piston rod, really reach the purpose of not having oil in the pressurized air of oil-free lubrication, the filler assembly of a kind of reciprocating air compressor of compliance with environmental protection requirements, make it not only can be used for new mechanism and make, reduce new machine cost of production effectively, also can be advantageously used in the oil lubrication reciprocating air compressor and be transformed into non-lubricated air compressor.

The utility model adopts following technological scheme:

The filler assembly of this reciprocating air compressor, comprise the stuffing box that constitutes by the lower cylinder body bottom, the back guide sleeve of in stuffing box, installing from bottom to top, first stuffing box of interior dress scraper ring, block ring, second stuffing box of interior dress seal ring, the Gland of preceding guide sleeve and stuffing box oral area, wherein: form oil resistance by the back guide sleeve and first stuffing box--oil scraping mechanism, the fluid resistance of escaping on the piston rod circumferential play can be scraped, from oil drainage hole, drain back in the crankcase of fuselage, form choked flow by the block ring and second stuffing box--sealing mechanism, on continuing the obstruct excess oil, escaping, seal ring prevents that mainly gas from leaking outside, by the back guide sleeve, block ring and preceding guide sleeve constitute jointly guiding--supporting mechanism, its special way is, the lower end of the back guide sleeve bottom stuffing box also has been hinged with oil-break--oil-releasing mechanism, it is made up of oil-break ring and lower cover in oil-break ring box and the gold, by screw on lower cylinder body, it can intercept most of fluid of upwards overflowing along the piston rod gap, is back in the crankcase from oil drainage hole.

The oil-break ring of the oil-break of this filler assembly--oil-releasing mechanism can be the three pieces type or the four-piece type structure of being pricked by spring band, as the existing described three pieces type scraper ring of patent.The oil-break ring of described four-piece type structure can be that otch is the four sheet elements composition of two straight lines, is pricked by spring band, and laterally there is circular groove at the endoporus middle part, has oil drainage hole in the groove, and a Transverse plane has step, and the step patrix is to having oil-discharge trough.

The utility model filler assembly is compared with original patented technology; has significantly positive effect; it has not only kept the advantage of original patented technology and (has consulted attached 1; Fig. 2; Fig. 5); promptly need between former fuselage and lower cylinder body, not increase member; piston body; cylinder body and piston rod etc. needn't extend fully just can use the new machine of this filler assembly production; to original when having the oil lubrication air compressor to transform; need not move basis and former distribution pipes yet; motionless fuselage, thereby save time, economize on the use of funds; and; it has also overcome former patented technology deficiency, has increased oil-break--and oil-releasing mechanism has strengthened intercepting fluid along the effect of escaping on the piston rod gap greatly; make air compressor really reach oil-free lubrication and the oily purpose that enters cylinder of nothing; meet environmental protection requirement, and simple in structure, easy for installation.

Description of drawings:

Fig. 1 is the utility model structure, principle schematic;

Fig. 2 is the utility model scheme of installation in unit, and wherein A is the mounting point;

Fig. 3 is the oil-break ring schematic representation of the four-piece type structure of filler assembly;

Fig. 4 is the plan view of Fig. 3;

Fig. 5 is former patent filler assembly structural representation, and wherein reference character is corresponding with Fig. 1, and adds " ' " to show difference.

Embodiment:

Accompanying drawing 1 to Fig. 4 has been described an embodiment of the present utility model.By the bottom of the lower cylinder body 3 of air compressor as stuffing box, at the bottom of the letter vertically five equilibrium have oil-discharge trough 301, back guide sleeve 4 is installed in the stuffing box from bottom to top, in adorn first stuffing box 8 of two scraper rings 6, block ring 9, in adorn second stuffing box 12 of two seal rings 11, preceding guide sleeve 15 and Gland 14, wherein: the back guide sleeve 4 and first stuffing box 8 are formed oil resistance--oil scraping mechanism, the big end surface of back guide sleeve 4 has circular groove 403, uniform oil drainage hole 402 in the groove, between major part shoulder and stuffing box annular bottom surface sealing gasket 5 is housed, scraper ring 6 is the three pieces type or the four-piece type structures of being pricked by spring 7 hoops, fluid resistance along ease on the piston rod 2 can be scraped, row is to the crankcase of fuselage 1 from oil drainage hole 402 and oil-discharge trough 301; Form choked flow by the block ring 9 and second stuffing box 12--sealing mechanism, block ring 9 can play the effect of obstruct fluid, and seal ring 11 is the three pieces type structure of trisection, and the purpose that spring 10 can reach sealing and wearing and tearing post-compensation is housed in the peripheral groove; Unite by preceding guide sleeve 15 threes on the block ring 9 at back guide sleeve 4, middle part and top and to constitute guiding--supporting mechanism, they with internal surface that piston rod 2 contacts on all be embedded with one deck oil-free lubrication material 401,901,151; Above-mentioned each member is fixed in the stuffing box by Gland 14 and screw 13, constitutes the top of the utility model filler assembly.The bottom of this filler assembly then is oil-break a--oil-releasing mechanism, it is by oil-break ring box 16, its the inner oil-break ring 20 installed and lower cover 17 are formed, oil-break ring 20 is that spring 19 binds round the four-piece type structure of bundle (referring to Fig. 3, Fig. 4), its otch is two straight lines 205, the endoporus middle part laterally has circular groove 201, uniform a plurality of oil drainage holes 202 in the groove, one end face of oil-break ring 20 has step 203, laterally have oil-discharge trough 204 on the step, by lower cover 17 and housing screw 18 oil-break ring 20 is fixed in the oil-break box 16, its end face that step 203 arranged down, housing screw 18 is fixed tightly in oil-break ring box 16 on the lower cylinder body 3 simultaneously, and be hinged with in the lower end of back guide sleeve 4, thereby making this oil-break--the top of oil-releasing mechanism and filler assembly is connected as a single entity, and forms a whole set of filler assembly of the present utility model.Oil-break--oil-releasing mechanism is the first road oil resistance device of the present utility model, it can intercept the major part along the fluid of ease on the piston rod 2, the fluid that scrapes is returned in the crankcase of fuselage 1 through the following oil drainage hole of oil drainage hole 202, oil-discharge trough 201 and the lower cover 17 of oil-break ring 20, alleviate the oil resistance oil extraction pressure on filler assembly top, strengthened the oil resistance effect greatly.

Claims (2)

1, a kind of filler assembly of reciprocating type air compression face, comprise the stuffing box that constitutes by lower cylinder body (3) bottom, the back guide sleeve of in stuffing box, installing from bottom to top (4), first stuffing box (8) of interior dress scraper ring (6), block ring (9), second stuffing box (12) of interior dress seal ring (11), preceding guide sleeve (15) and Gland (14), it is characterized in that also being hinged with oil-break--oil-releasing mechanism in back guide sleeve (4) lower end of stuffing box bottom, it is made up of oil-break ring (20) and lower cover (17) in oil-break ring box (16) and the box, is fixed tightly on the lower cylinder body (3) by attachment screw (18).

2, filler assembly according to claim 1 is characterized in that described oil-break ring (20) is that otch is the four-piece type structure of two straight lines (205).

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