CN102322374A

CN102322374A - Oil bath air filter

Info

Publication number: CN102322374A
Application number: CN201110301988A
Authority: CN
Inventors: 王钦泉; 许强; 蒋吉华
Original assignee: JINTAN XINLAND DIESEL ENGINE CO Ltd
Current assignee: JINTAN XINLAND DIESEL ENGINE CO Ltd
Priority date: 2011-10-06
Filing date: 2011-10-06
Publication date: 2012-01-18

Abstract

The invention relates to an oil bath air filter, which comprises an air inlet pipe seat, a butterfly nut, an anti-vibration sealing ring, a shell, an upper port sealing ring, a ventilated filter element cover, an oily filter element, a filter element accommodating body and an oil baffle disc. In the oil path dust cross structure, dust absorption oil is stored in an oil storage cavity, air contacts the dust absorption oil and then enters a capillary tube of the oily filter element after being sucked, dust and solid particles in the air are subjected to secondary oil adsorption, and fine dust in the air can be adsorbed and removed; the oily filter element is a polyurethane foam sponge, has high filtering efficiency and long service life, and is convenient to clean; the shell and the air inlet pipe seat are formed by pressing modified engineering plastic which has high injection forming performance, a cavity which meets the design requirement can be conveniently formed by pressing, and air inlet resistance and anti-vibration sound absorption performance are high; and steel is replaced by the plastic, so that production efficiency is high, quality is stable, weight is light, the air inlet quality of a diesel engine is ensured and the sufficient combustion of diesel oil is better facilitated due to a dual seal structure, and the output power of the diesel engine is improved.

Description

Oil bath air cleaner

Technical field

The present invention relates to relate to a kind of air-strainer of single cylinder diesel.

Background technique

At present, the single cylinder diesel of China below 10 horsepowers year volume of production and marketing more than 2,000,000, the employed air-strainer of this type diesel engine all is the papery filter core, shell is the iron sheet stamping part; In actual use, the working life of papery filter core is not long, must regularly replace, simultaneously; Because air-strainer all is installed in the next door of evaporation water tank, be easy to make moist, intake resistance increased after the papery filter core made moist on the one hand, and shorten working life; On the other hand, iron sheet outer casing makes moist for a long time and gets rusty easily, and iron rust blocks filter core easily; Influence air inflow, the ratio of iron shell is great in addition, is unfavorable for the lightweight requirements of complete machine.

Summary of the invention:

The purpose of this invention is to provide a kind of oil bath air cleaner, it utilizes oil bath type filter dirt principle, and inhaled air is filtered, and filtering efficiency is high; Be convenient to clean, air inflow is stable, can guarantee to filter the dirt effect for a long time, and induction noise is little; Humidity, in light weight, long service life.

The technological scheme that the present invention takes is:

A kind of oil bath air cleaner; It is characterized in that: comprise that plastic inlet base, wing nut, vibrationproof seal ring, plastic shell, upper end-hole seal ring, ventilative filter core lid, oil-containing filter core, plastics filter core hold body and plastics oil baffle disc; The plastics oil baffle disc is sleeved on the filter bowl pipe of plastic inlet base, and the lower end surface of the locating sleeve of plastics oil baffle disc contacts spacing with the oil baffle step of plastic inlet base; The plastics filter core holds body and is contained on the filter bowl pipe of plastic inlet base through the location inner hole sleeve; The lower end that the plastics filter core holds body cooperates with plastics oil baffle disc tightness; The oil-containing filter core is placed on the plastics filter core to be held in the filter core chamber of body, and ventilative filter core lid is arranged on the top of oil-containing filter core; The upper end-hole ring set holds on the upper end sealing strip of body at the plastics filter core; Plastic shell is contained on the tightening bolt of plastic inlet base through the location and installation borehole jack; The vibrationproof ring set is on tightening bolt and be pressed in the central position of the top plate of plastic shell; Sealing interior edge face and plastics filter core that the upper end-hole seal ring is arranged on plastic shell hold between the upper end sealing strip of body; Wing nut is screwed on the tightening bolt; Circular gap is 5～10 millimeters between the spacer ring of plastic inlet base and the air guide ring of plastic shell, and circular gap is 5～10 millimeters between the outer ring of the spacer ring of plastic inlet base and plastics filter core appearance body, and the upper end of spacer ring is 10～30 millimeters to distance between the sealing interior edge face of plastic shell.

Further, also comprise axial sealing ring, axial sealing ring is sleeved on the filter bowl pipe of plastic inlet base, and is arranged in the lower end Seal cage that the plastics filter core holds body.

Further, said plastic inlet base comprises adpting flange, attachment hole, center tube, filter bowl pipe, ventilative muscle, connects top, trapped fuel chamber, plastics oil baffle disc cavity volume, spacer ring, filter core cavity volume, tightening bolt and oil baffle step composition, and adpting flange is positioned at the lower end of center tube; Attachment hole is arranged on the adpting flange, and the filter bowl pipe is positioned at the top of center tube, and both are coaxial; Intersection at both forms the oil baffle step; Ventilative muscle is arranged on and connects between top and the filter bowl pipe, and ventilative muscle edge is circumferentially spaced apart, and the inboard of spacer ring is provided with first step, second step and the 3rd step; First step and oil baffle step be the height such as grade axially; Second step is 10～20 millimeters to the axial distance between the first step, and the distance between second step to the three steps is 10～20 millimeters, forms filter core cavity volume, plastics oil baffle disc cavity volume and trapped fuel chamber between spacer ring and center tube and the filter bowl pipe; And filter core cavity volume, plastics oil baffle disc cavity volume and trapped fuel chamber three distribute from top to bottom successively; The lower end surface of spacer ring is 25～50 millimeters to the distance between the upper-end surface of adpting flange, and tightening bolt is arranged on the central position that connects the top, and is coaxial with the filter bowl pipe.

Further; Said plastic shell is the step type plastic shell, and it comprises air guide ring, top plate, sealing interior edge face, location and installation hole and pressure-reducing ring, and top plate is positioned at the upper end of air guide ring; The sealing interior edge face is arranged between top plate and the air guide ring; The internal diameter of air guide ring is bigger 5～10 millimeters than the external diameter of the spacer ring of plastic inlet base, and location and installation hole and pressure-reducing ring all are arranged on the top plate, and location and installation hole and pressure-reducing ring are all coaxial with air guide ring.

Further, it is the ring-type cup that said plastics filter core holds body, and it comprises outer ring, upper end sealing strip, inner ring, base ring, air hole, lower end Seal cage, location endoporus and filter core chamber; The external diameter of outer ring is littler 5～10 millimeters than the internal diameter of the spacer ring of plastic inlet base; The upper end sealing strip is arranged on the upper end of outer ring, and the suitable for reading of inner ring hangs down 2～10 millimeters than the suitable for reading of outer ring, and air hole is opened on the base ring equably; Outer ring, inner ring and base ring are enclosed the filter core chamber, and the lower end of inner ring forms the lower end Seal cage.

Further, said plastics filter core holds body and also is provided with bayonet slot, and bayonet slot is arranged on the inboard suitable for reading of outer ring.

Further, ventilative filter core covers in the bayonet slot of the inboard suitable for reading, outer ring that is installed on plastics filter core appearance body.

Further; The shape of cross section of said plastics oil baffle disc is a splayed shape; It comprises locating sleeve, gradient dust fall plate, oil outlet and installation endoporus, and gradient dust fall plate is arranged on the lower end of locating sleeve, and oil outlet is arranged on the gradient dust fall plate; The lower end surface of locating sleeve is an axle location limit face, and the center that endoporus is positioned at locating sleeve is installed.

Owing to adopt oil bath type to cross the dirt structure, in the trapped fuel chamber of plastic inlet base, there are machine oil or diesel oil, the plastics oil baffle disc covers on the top in trapped fuel chamber; The gradient dust fall plate top surface of pasta and plastics oil baffle disc is suitable; Air successively between the air guide ring of the spacer ring of plastic inlet base and plastic shell the spacer ring of circular gap, plastic inlet base and plastics filter core hold suck the circular gap between the outer ring of body after, contact with pasta earlier, dust in the air, solid particle is first is adsorbed by machine oil; Dust and solid particle post precipitation are along in the gradient dust fall plate landing trapped fuel chamber; Rise the capillary through the specific air hole entering oil-containing filter core of pre-filtering processing back, first road from the base ring of plastics filter core appearance body, the trickle dirt in this process air is by further absorption removal, and air is sent into the inlet hole of cylinder behind the process secondary filter from space inflow center tube and filter bowl tube hub hole between the ventilative muscle of plastic inlet base upper end; Because the oil-containing filter core is polyurethane foam sponge HR15; It is a cellular structure, will form blood capillary tubular type gas-entered passageway behind the oil-containing, and filtering efficiency is high; Convenience for washing, long service life.Plastic shell and plastic inlet base all adopt modified engineered plastic PPGF compression moulding, and injection moulding property is good, can not only suppress the die cavity that more adheres to specification easily, can reduce intake resistance, again can the antivibration sound-absorbing, and resistance to shock is fabulous.To mould Dai Gang, not only manufacturing efficiency is high, and is stable during part processing matter, and part is in light weight, meets the light-weight design requirement of complete machine, is convenient to recycle energy-conserving and environment-protective.The double sealing structure can prevent effectively that the air filtered from just directly getting into, and has guaranteed the air inlet quality of diesel engine, is more conducive to the abundant burning of diesel oil, improves the output power of diesel engine.

Description of drawings:

Fig. 1 is a kind of structural representation of the present invention;

Fig. 2 is the structural representation of plastic inlet base;

Fig. 3 is the structural representation of plastic shell;

Fig. 4 holds the structural representation of body for the plastics filter core;

Fig. 5 is the structural representation of plastics oil baffle disc;

Fig. 6 is the worm's eye view of Fig. 5;

Among the figure, 1-plastic inlet base; The 2-wing nut; 3-vibrationproof seal ring; The 4-plastic shell; 5-upper end-hole seal ring; The ventilative filter core lid of 6-; 7-oil-containing filter core; 8-plastics filter core holds body; 9-plastics oil baffle disc; The 10-axial sealing ring; The 11-adpting flange; The 12-attachment hole; The 13-center tube; 14-filter bowl pipe; The 15-muscle of breathing freely; 16-connects the top; 17-trapped fuel chamber; 18-plastics oil baffle disc cavity volume; The 19-spacer ring; 20-filter core cavity volume; The 21-tightening bolt; 22-oil baffle step; The 23-first step; The 24-second step; 25-the 3rd step; The 41-air guide ring; The 42-top plate; 43-seals interior edge face; 44-location and installation hole; The 45-pressure-reducing ring; The 81-outer ring; 82-upper end sealing strip; The 83-inner ring; The 84-base ring; The 85-air hole; 86-lower end Seal cage; 87-locatees endoporus; 88-filter core chamber; The 89-bayonet slot; The 91-locating sleeve; 92-gradient dust fall plate; The 93-oil outlet; 94-installs endoporus.

Embodiment

Below in conjunction with description of drawings embodiment of the present invention:

Embodiment 1: a kind of oil bath air cleaner; As shown in Figure 1; It is held body 8, plastics oil baffle disc 9 and axial sealing ring 10 and is formed by plastic inlet base 1, wing nut 2, vibrationproof seal ring 3, plastic shell 4, upper end-hole seal ring 5, ventilative filter core lid 6, oil-containing filter core 7, plastics filter core; Said plastic inlet base 1 is as shown in Figure 2; It is made up of adpting flange 11, attachment hole 12, center tube 13, filter bowl pipe 14, ventilative muscle 15, connection top 16, trapped fuel chamber 17, plastics oil baffle disc cavity volume 18, spacer ring 19, filter core cavity volume 20, tightening bolt 21 and oil baffle step 22, and adpting flange 11 is positioned at the lower end of center tube 13, and attachment hole 12 is arranged on the adpting flange 11; Filter bowl pipe 14 is positioned at the top of center tube 13; Both are coaxial, form 22, three ventilative muscle 15 of oil baffle step in both intersection and circumferentially are arranged on equably and connect between top 16 and the filter bowl pipe 14; The inboard of spacer ring 19 is provided with first step 23, second step 24 and the 3rd step 25; First step 23 and oil baffle step 22 axial height such as grade, second step 24 is 10～20 millimeters to the axial distance between the first step 23, the distance between second step 24 to the 3rd steps 25 is 10～20 millimeters; Form filter core cavity volume 20, plastics oil baffle disc cavity volume 18 and trapped fuel chamber 17 between spacer ring 19 and center tube 13 and the filter bowl pipe 14; And filter core cavity volume 20, plastics oil baffle disc cavity volume 18 and trapped fuel chamber 17 threes distribute from top to bottom successively, and the lower end surface of spacer ring 19 is 25～50 millimeters to the distance between the upper-end surface of adpting flange 11, and the upper end of spacer ring 19 is 10～30 millimeters to distance between the sealing interior edge face 43 of plastic shell 4; Tightening bolt 21 is arranged on the central position that connects top 16, and is coaxial with filter bowl pipe 14; Said plastic shell 4 is as shown in Figure 3; It is the step type plastic shell; Comprise air guide ring 41, top plate 42, sealing interior edge face 43, location and installation hole 44 and pressure-reducing ring 45; Top plate 42 is positioned at the upper end of air guide ring 41, and sealing interior edge face 43 is arranged between top plate 42 and the air guide ring 41, and the internal diameter of air guide ring 41 is bigger 5～10 millimeters than the external diameter of the spacer ring 19 of plastic inlet base 1; Location and installation hole 44 all is arranged on the top plate 42 with pressure-reducing ring 45, and location and installation hole 44 is all coaxial with air guide ring 41 with pressure-reducing ring 45; It is the ring-type cup that said plastics filter core holds body 8; As shown in Figure 4, it comprises outer ring 81, upper end sealing strip 82, inner ring 83, base ring 84, air hole 85, lower end Seal cage 86, location endoporus 87, filter core chamber 88 and bayonet slot 89, and the external diameter of outer ring 81 is littler 5～10 millimeters than the internal diameter of the spacer ring 19 of plastic inlet base 1; Upper end sealing strip 82 is arranged on the upper end of outer ring 81; The suitable for reading of inner ring 83 hangs down 2～10 millimeters than the suitable for reading of outer ring 81, and air hole 85 is offered on the base ring 84 equably, and outer ring 81, inner ring 83 and base ring 84 are enclosed filter core chamber 88; The lower end of inner ring 83 forms lower end Seal cage 86, and bayonet slot 89 is arranged on the inboard suitable for reading of outer ring 81; Said plastics oil baffle disc 9 is like Fig. 5, shown in Figure 6; Its shape of cross section is a splayed shape; It comprises locating sleeve 91, gradient dust fall plate 92, oil outlet 93 and installation endoporus 94, and gradient dust fall plate 92 is arranged on the lower end of locating sleeve 91, and oil outlet 93 is arranged on the gradient dust fall plate 92; The lower end surface of locating sleeve 91 is an axle location limit face, and the center that endoporus 94 is positioned at locating sleeve 91 is installed; Assembly structure between each part is: plastics oil baffle disc 9 is sleeved on the filter bowl pipe 14 of plastic inlet base 1 through endoporus 94 is installed, and the lower end surface of the locating sleeve 91 of plastics oil baffle disc 9 contacts spacing with the oil baffle step 22 of plastic inlet base 1; Axial sealing ring 10 is sleeved on the filter bowl pipe 14 of plastic inlet base 1; The plastics filter core holds body 8 and is sleeved on the filter bowl pipe 14 of plastic inlet base 1 through location endoporus 87; The lower end Seal cage 86 that the plastics filter core holds body 8 is sleeved on the epimere cylindrical of locating sleeve 91 of plastics oil baffle disc 9, and axial sealing ring 10 is arranged in the lower end Seal cage 86 that the plastics filter core holds body 8; Oil-containing filter core 7 is placed on the plastics filter core to be held in the filter core chamber 88 of body 8, and ventilative filter core lid 6 is positioned at the top of oil-containing filter core 7, and is installed on the plastics filter core and holds in the bayonet slot 89 of 81 inboards suitable for reading, outer ring of body 8; Upper end-hole seal ring 5 is sleeved on the plastics filter core to be held on the upper end sealing strip 82 of body 8; Plastic shell 4 is sleeved on the tightening bolt 21 of plastic inlet base 1 through location and installation hole 44; Vibrationproof seal ring 3 is sleeved on the tightening bolt 21 and pushes down the central position of the top plate 42 of plastic shell 4; Sealing interior edge face 43 and plastics filter core that upper end-hole seal ring 5 is arranged on plastic shell 4 hold between the upper end sealing strip 82 of body 8, and wing nut 2 is screwed on the tightening bolt 21.

Through test, the technical parameter such as the following table of the diesel engine air filtering of this structure:

Mode of execution of the present invention is a lot, so long as functional structure such as of the present invention all belongs to protection scope of the present invention.

Claims

1. oil bath air cleaner; It is characterized in that: comprise that plastic inlet base (1), wing nut (2), vibrationproof seal ring (3), plastic shell (4), upper end-hole seal ring (5), ventilative filter core lid (6), oil-containing filter core (7), plastics filter core hold body (8) and plastics oil baffle disc (9); Plastics oil baffle disc (9) is sleeved on the filter bowl pipe (14) of plastic inlet base (1), and the lower end surface of the locating sleeve (91) of plastics oil baffle disc (9) contacts spacing with the oil baffle step (22) of plastic inlet base (1); The plastics filter core holds body (8) and is sleeved on the filter bowl pipe (14) of plastic inlet base (1) through location endoporus (87); The lower end that the plastics filter core holds body (8) cooperates with plastics oil baffle disc (9) tightness; Oil-containing filter core (7) is placed on the plastics filter core to be held in the filter core chamber (88) of body (8), and ventilative filter core lid (6) is arranged on the top of oil-containing filter core (7); Upper end-hole seal ring (5) is sleeved on the plastics filter core to be held on the upper end sealing strip (82) of body (8); Plastic shell (4) is sleeved on the tightening bolt (21) of plastic inlet base (1) through location and installation hole (44); Vibrationproof seal ring (3) is sleeved on the central position that the top plate (42) of plastic shell (4) was gone up and be pressed in to tightening bolt (21); Sealing interior edge face (43) and plastics filter core that upper end-hole seal ring (5) is arranged on plastic shell (4) hold between the upper end sealing strip (82) of body (8); Wing nut (2) is screwed on the tightening bolt (21); Circular gap is 5～10 millimeters between the spacer ring (19) of plastic inlet base (1) and the air guide ring (41) of plastic shell (4); Circular gap is 5～10 millimeters between the outer ring (81) of the spacer ring (19) of plastic inlet base (1) and plastics filter core appearance body (8), and the upper end of spacer ring (19) is 10～30 millimeters to distance between the sealing interior edge face (43) of plastic shell (4).

2. according to the said oil bath air cleaner of claim 1, it is characterized in that: also comprise axial sealing ring (10), axial sealing ring (10) is sleeved on the filter bowl pipe (14) of plastic inlet base (1), and is arranged in the lower end Seal cage (86) that the plastics filter core holds body (8).

3. according to the said oil bath air cleaner of claim 1; It is characterized in that: said plastic inlet base (1) comprises adpting flange (11), attachment hole (12), center tube (13), filter bowl pipe (14), ventilative muscle (15), connects top (16), trapped fuel chamber (17), plastics oil baffle disc cavity volume (18), spacer ring (19), filter core cavity volume (20), tightening bolt (21) and oil baffle step (22) composition; Adpting flange (11) is positioned at the lower end of center tube (13); Attachment hole (12) is arranged on the adpting flange (11); Filter bowl pipe (14) is positioned at the top of center tube (13); Both are coaxial, and at both intersection's formation oil baffle steps (22), ventilative muscle (15) is arranged on and connects between top (16) and the filter bowl pipe (14); And ventilative muscle (15) is along circumferentially spaced apart; The inboard of spacer ring (19) is provided with first step (23), second step (24) and the 3rd step (25), first step (23) and the axial height such as grade of oil baffle step (22), and second step (24) is 10～20 millimeters to the axial distance between the first step (23); Second step (24) is 10～20 millimeters to the distance between the 3rd step (25); Form filter core cavity volume (20), plastics oil baffle disc cavity volume (18) and trapped fuel chamber (17) between spacer ring (19) and center tube (13) and the filter bowl pipe (14), and filter core cavity volume (20), plastics oil baffle disc cavity volume (18) and trapped fuel chamber (17) three distribution successively from top to bottom, the lower end surface of spacer ring (19) is 25～50 millimeters to the distance between the upper-end surface of adpting flange (11); Tightening bolt (21) is arranged on the central position that connects top (16), and is coaxial with filter bowl pipe (14).

4. according to the said oil bath air cleaner of claim 1; It is characterized in that: said plastic shell (4) is the step type plastic shell; It comprises air guide ring (41), top plate (42), sealing interior edge face (43), location and installation hole (44) and pressure-reducing ring (45); Top plate (42) is positioned at the upper end of air guide ring (41), and sealing interior edge face (43) is arranged between top plate (42) and the air guide ring (41), and the internal diameter of air guide ring (41) is bigger 5～10 millimeters than the external diameter of the spacer ring (19) of plastic inlet base (1); Location and installation hole (44) and pressure-reducing ring (45) all are arranged on the top plate (42), and location and installation hole (44) and pressure-reducing ring (45) are all coaxial with air guide ring (41).

5. according to the said oil bath air cleaner of claim 1; It is characterized in that: said plastics filter core holds body (8) and is the ring-type cup; It comprises outer ring (81), upper end sealing strip (82), inner ring (83), base ring (84), air hole (85), lower end Seal cage (86), locatees endoporus (87) and filter core chamber (88); The external diameter of outer ring (81) is littler 5～10 millimeters than the internal diameter of the spacer ring (19) of plastic inlet base (1); Upper end sealing strip (82) is arranged on the upper end of outer ring (81), and the suitable for reading of inner ring (83) hangs down 2～10 millimeters than the suitable for reading of outer ring (81), and air hole (85) is opened on the base ring (84) equably; Outer ring (81), inner ring (83) and base ring (84) are enclosed filter core chamber (88), and the lower end of inner ring (83) forms lower end Seal cage (86).

6. according to the said oil bath air cleaner of claim 5, it is characterized in that: said plastics filter core holds body (8) and also is provided with bayonet slot (89), and bayonet slot (89) is arranged on the inboard suitable for reading of outer ring (81).

7. according to the said oil bath air cleaner of claim 1, it is characterized in that: ventilative filter core lid (6) is installed on the plastics filter core to be held in the bayonet slot (89) of inboard suitable for reading, outer ring (81) of body (8).

8. according to the said oil bath air cleaner of claim 1; It is characterized in that: the shape of cross section of said plastics oil baffle disc (9) is a splayed shape; It comprises locating sleeve (91), gradient dust fall plate (92), oil outlet (93) and installation endoporus (94), and gradient dust fall plate (92) is arranged on the lower end of locating sleeve (91), and oil outlet (93) is arranged on the gradient dust fall plate (92); The lower end surface of locating sleeve (91) is an axle location limit face, and the center that endoporus (94) is positioned at locating sleeve (91) is installed.